Abrégé

The present invention discloses a mine disaster tracing method based on a knowledge graph, applied in coal mine safety. First, a mine disaster-related knowledge graph is built, involving three main steps: constructing a conceptual model, extracting entities from relational databases and geological maps, and establishing entity relationships based on location and process logic. Next, characteristic indexes and transmission rules for entity objects are set, categorizing entities into four types: discrete reporting, continuous monitoring, geological structure, and geological continuity. When an early warning occurs, disaster tracing is performed using the entity transmission rules and a graph traversal algorithm, identifying direct and root causes. This invention offers systematic and timely disaster tracing by utilizing a specialized knowledge graph and graph algorithms.

Classes IPC  ?

• G06N 5/025 - Extraction de règles à partir de données
• G06N 5/045 - Explication d’inférenceIntelligence artificielle explicable [XAI]Intelligence artificielle interprétable

Abrégé

Disclosed are chemically end-capped polypiperazine pyrophosphate-modified ammonium polyphosphate with high temperature resistance and precipitation resistance, a preparation method therefor, and an apparatus and application thereof. The chemically end-capped polypiperazine pyrophosphate-modified ammonium polyphosphate flame retardant is formed by polypiperazine pyrophosphate modification based on ammonium polyphosphate, followed by end capping; and the polypiperazine pyrophosphate is prepared by polymerization of an intermediate piperazine diphosphate obtained through dehydration condensation of phosphoric acid and piperazine. The chemically end-capped polypiperazine pyrophosphate-modified ammonium polyphosphate flame retardant of the present solution is prepared by using special equipment, which ensures whiteness and thermal stability of product, and improves properties of ammonium polyphosphate. The chemically end-capped polypiperazine pyrophosphate-modified ammonium polyphosphate flame retardant is further applied to preparation of flame-retardant polypropylene, so that flame-retardancy, temperature resistance and precipitation resistance of the flame retardant in a polypropylene system can be improved.

Classes IPC  ?

• C08G 79/04 - Phosphore lié soit à l'oxygène, soit à un oxygène et à un carbone
• C07F 9/24 - Esteramides

Abrégé

A downhole extraction pipeline blockage clearing system, comprising a blockage clearing apparatus (1), a direction changing and impurity removal integrated apparatus (2), an impurity removal apparatus (3), and a floating ball control mechanism; the blockage clearing apparatus (1) utilizes a self-advancing blockage clearing spray head (5), which has self-rotation and self-advancing functions and utilizes a high pressure jet to actively clean a pipeline, thus improving the efficiency and effect of blockage clearing; the direction changing and impurity removal integrated apparatus (2) can implement direction changing for and transport of the blockage clearing apparatus (1), conveniently adjusts the direction of entry of the blockage clearing apparatus (1) into an extraction pipeline, and adapts to different extraction pipeline arrangements; the impurity removal apparatus (3) can implement simultaneous online cleaning and impurity removal, improving blockage clearing efficiency and reducing manual operation; additionally, the floating ball control mechanism is also utilized, and a plurality of one-way valves are jointly controlled by means of buoyancy and changes in pressure differences, thereby implementing impurity removal automation. The extraction pipeline does not need to be closed during a blockage clearing procedure.

Classes IPC  ?

• B08B 9/049 - Nettoyage des surfaces intérieuresÉlimination des bouchons utilisant des dispositifs de nettoyage introduits dans et déplacés le long des tubes les dispositifs de nettoyage comportant des moyens autopropulseurs pour se déplacer dans les tubes
• E21F 7/00 - Procédés ou dispositifs pour enlever les gaz, avec ou sans utilisation ultérieure de ceux-ci à une fin quelconque

Abrégé

The present invention relates to a downhole extraction pipeline blockage clearing apparatus, comprising a frame, a hose wind-up apparatus, an advancing apparatus, a high pressure pump set, a hydraulic pipe, a self-advancing blockage clearing spray head, and a control system; the hose wind-up apparatus, the advancing apparatus, and the high pressure pump group are all connected to the control system and are controlled by the control system; the hydraulic hose is wound on the hose wind-up apparatus, and wind-up of the hydraulic hose is implemented by means of rotation of the hose wind-up apparatus; the advancing apparatus is located at one side of the hose wind-up apparatus, jointly moves with the hose wind-up apparatus, and holds and transports the hydraulic hose to enter into an extraction pipeline; one end of the hydraulic hose is connected to the high pressure pump group, and the other end is connected to the self-advancing blockage clearing spray head; and the self-advancing blockage clearing spray head performs blockage clearing within the extraction pipeline by means of a jet stream and by means of the high pressure pump group conveying high pressure water to the self-advancing blockage clearing spray head. The spray head of the present invention possesses self-rotation and self-advancing functions, the effect and efficiency of blockage clearing are improved, and manual operation becomes less intensive; and the hose wind-up apparatus and the advancing apparatus implement automated wind-up and transport of the hydraulic hose, preventing the hydraulic hose from becoming tangled and damaged.

Classes IPC  ?

• E21B 21/00 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p. ex. en utilisant l'air d'échappement du moteur
• E21F 7/00 - Procédés ou dispositifs pour enlever les gaz, avec ou sans utilisation ultérieure de ceux-ci à une fin quelconque

Abrégé

Disclosed are chemically end-capped melamine pyrophosphate with high temperature resistance and precipitation resistance, a preparation method and apparatus thereof, and an application thereof in flame-retardant nylon. End-capping treatment of melamine pyrophosphate enhances flame retardancy and precipitation resistance of a flame retardant, and melamine pyrophosphate is used for producing high-strength flame-retardant nylon, which improves product performance. A special flame-retardant preparation device is also used, and appropriate process flow and parameter design further improves comprehensive properties of the flame retardant, including whiteness and a 1% thermal decomposition temperature. The present technical solution can overcome technical defects of the melamine pyrophosphate flame retardant in the prior art including non-ideal properties in a flame retardant effect and stability, as well as difficulty to improve the comprehensive properties of the flame-retardant nylon. The process is simple but ideal in the effect, and is suitable for a wide range of applications.

Classes IPC  ?

• C08K 5/52 - Phosphore lié à l'oxygène lié uniquement à l'oxygène

Abrégé

A directional drilling rig power head, relating to the technical field of coal mine drilling rigs. The directional drilling rig power head comprises a main motor (1), a transmission (2), a main shaft (10), a driving drill pipe (6), and a water braid (4). The transmission is provided with a driving shaft (201), one end of the driving shaft is connected to the main motor, the driving shaft is in meshing transmission with the main shaft by means of a gear in the transmission, one end of the main shaft is fixedly connected to the driving drill pipe in the circumferential direction, and the other end of the driving shaft is connected to an angle adjuster (3) by means of the transmission, so that the directional drilling rig power head has the functions of efficiently and accurately adjusting the tool face and braking the main motor. A mandrel (402) in the water braid is connected to, by means of a connecting shaft (7), the driving drill pipe having an axial floating structure, and the end of the main shaft close to the water braid is provided with a connecting sleeve (8) forming a hexagonal sleeve sliding pair together with the connecting shaft, so that a mandrel supporting bearing (401) is free from axial impact in the drilling process, thereby prolonging the service life and reducing the number of times of device maintenance.

Classes IPC  ?

• E21B 3/02 - Moyens d'entraînement de surface pour forage par rotation

Abrégé

A connecting rod-synchronized mechanical gripper, pertaining to the field of mechanical design. The mechanical gripper comprises a power source outputting power in the form of linear motion, the power source being rotatably disposed; and comprises a first gripper finger (4) and a second gripper finger (3) which are oppositely arranged, the first gripper finger and the second gripper finger both being rotatably disposed, and the first gripper finger and the second gripper finger being connected to one another by means of a transmission rod (8). The power source drives the first gripper finger to rotate, such that under the driving of the transmission rod, the first gripper finger and the second gripper finger are synchronously spread out or synchronously carry out gripping. The connecting rod-synchronized mechanical gripper can achieve synchronous gripping and loosening of the gripper fingers on both sides, which greatly reduces the space of motion required for gripping a drill pipe by the mechanical gripper, and facilitates optimization of the structure of the mechanical gripper and related components. Meanwhile, the synchronized motion of the gripper fingers on both sides effectively avoids position deviation of the drill pipe when being gripped, which better ensures the accuracy in delivery of the drill pipe.

Classes IPC  ?

• B25J 15/02 - Têtes de préhension servocommandées

Abrégé

A rotation angle control and braking apparatus for a power head of a directional drilling rig, relating to the technical field of coal mine drilling rigs. The apparatus comprises a propeller shaft (1), a driving piston (2), a fixed toothed disc (5), a movable toothed disc (6), an end cover (7), a rotary base (10), a connection base (12), and a rotary reducer (3) having a self-locking function. One end of the propeller shaft (1) is circumferentially fixedly connected to a drive shaft (13) in the power head of the directional drilling rig. The driving piston (2), the fixed toothed disc (5), and the movable toothed disc (6) are all sleeved on the propeller shaft (1), and the fixed toothed disc (5) and the propeller shaft (1) are circumferentially fixedly connected. A spring (9) is arranged between the movable toothed disc (6) and the end cover (7). Under the action of the spring (9), helical teeth of the movable toothed disc (6) and the fixed toothed disc (5) mesh with one another. A sealing cavity (Y) is arranged between the connection base (12) and the driving piston (2), and by means of injecting oil into the sealing cavity (Y), the driving piston (2) and the movable toothed disc (6) are driven to move towards the end cover (7), so as to disengage the meshing between the helical teeth. The rotary base (10) is circumferentially fixedly connected on the outer side of the movable toothed disc (6), and is fixedly connected to an output disc of the rotary reducer (3).

Classes IPC  ?

• E21B 3/02 - Moyens d'entraînement de surface pour forage par rotation
• E21B 7/04 - Forage dirigé

Abrégé

The present invention belongs to the technical field of coal mine roadway accumulated dust cleaning, and relates to a coal mine rubber-tyred vehicle auxiliary transport roadway accumulated dust cleaning robot, which aims to solve problems, such as low efficiency and poor safety, of existing coal mine rubber-tyred vehicle auxiliary transport roadway accumulated dust cleaning work. In the present invention, a coal mine power facility accumulated dust damp-type wiping device, a wet-type accumulated dust rinsing device, an automatic navigation system and an electro-hydraulic control system are provided on an electric drive rubber-tyred walking platform, such that the robot can automatically navigate and advance, and is driven by the electro-hydraulic control system to work in a coal mine roadway, so as to clean dust accumulated on power cables, two sides, the roof and the floor of the roadway. The present invention uses a damp-wet combined mode to clean the dust, comprising the dust accumulated on the power cables, accumulated on the auxiliary transport roadway, thereby effectively improving the efficiency and safety of the coal mine rubber-tyred vehicle auxiliary transport roadway accumulated dust cleaning work, and reducing labor intensity and danger.

Classes IPC  ?

• E01H 1/10 - Emploi de l'eau pour désagréger ou détacher les matières indésirablesAppareils de ratissage ou de raclage

Abrégé

A coal mine rubber-tyred vehicle auxiliary transport roadway accumulated dust cleaning system, comprising: a plurality of coal mine rubber-tyred vehicle auxiliary transport roadway accumulated dust cleaning robots (1), a plurality of coal mine roadway accumulated dust online monitoring stations (2), a plurality of charging stations (3), a plurality of coal mine downhole automated water adding stations (4), and a central control system (5). The system implements classification-based cleaning of dust accumulated on coal mine rubber-tyred vehicle auxiliary transport roadways, and achieves automated, intelligent and efficient cleaning operations.

Classes IPC  ?

• E21F 5/00 - Moyens ou procédés pour empêcher, fixer, abattre ou enlever la poussièrePrévention des explosions ou des feux
• E21F 5/02 - Moyens ou procédés pour empêcher, fixer, abattre ou enlever la poussièrePrévention des explosions ou des feux par humidification ou pulvérisation
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

The invention relates to the technical field of flame retardants, in particular to a chemically-endcapped melamine polyphosphate having high temperature resistance and leaching resistance, a preparation method and apparatus thereof, and a use thereof in flame-retardant nylon. The present technical solution uses a melamine polyphosphate end-capping treatment mode, such that the flame-retardant performance and the leaching resistance of the flame retardant are improved, and melamine polyphosphate is used for manufacturing a high-strength flame-retardant nylon, such that the product performance is improved. The present technical solution also uses a special flame-retardant preparation device, and by means of appropriate process flow and parameter design, further improves the product comprehensive performance of the flame retardant, including the whiteness and the 1% thermal decomposition temperature. The present technical solution can solve the technical problems in the prior art of the flame-retardant effect and stability of the melamine polyphosphate flame retardant being not ideal, and the comprehensive performance of the flame-retardant nylon being difficult to improve. The process is simple, the effect is ideal, and the method is suitable for a wide range of applications.

Classes IPC  ?

• C08G 79/04 - Phosphore lié soit à l'oxygène, soit à un oxygène et à un carbone
• C08L 77/02 - Polyamides dérivés des acides oméga-aminocarboxyliques ou de leurs lactames
• C08L 77/06 - Polyamides dérivés des polyamines et des acides polycarboxyliques
• C08L 85/02 - Compositions contenant des composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant des atomes autres que le silicium, le soufre, l'azote, l'oxygène et le carboneCompositions contenant des dérivés de tels polymères contenant du phosphore

Abrégé

The present invention relates to the technical field of flame retardants, and specifically relates to a chemical end-capped polypiperazine pyrophosphate-modified ammonium polyphosphate with high temperature resistance and bleed out resistance, a preparation method therefor, and an apparatus and application thereof. The chemical end-capped polypiperazine pyrophosphate modified ammonium polyphosphate flame retardant is formed by polypiperazine pyrophosphate modification with ammonium polyphosphate as the base, and then carrying out end capping; also, the polypiperazine pyrophosphate is obtained via phosphoric acid and piperazine undergoing dehydration condensation to obtain intermediate piperazine diphosphate, and the intermediate then undergoing polymerization. The chemical end-capped polypiperazine pyrophosphate modified ammonium polyphosphate flame retardant of the present solution is prepared and formed using special equipment, the whiteness and thermal stability of the product can be ensured, and the properties of ammonium polyphosphate are improved. The chemical end-capped polypiperazine pyrophosphate modified ammonium polyphosphate flame retardant is further applied to the preparation of flame-retardant polypropylene, so that the flame-retardancy can be improved, and the temperature resistance and bleed out resistance of the flame retardant in the polypropylene system can be improved. Consequently, the technical solution has wide application prospects and a higher application value.

Classes IPC  ?

• C08G 79/04 - Phosphore lié soit à l'oxygène, soit à un oxygène et à un carbone
• C08L 23/12 - Polypropylène
• C08L 85/02 - Compositions contenant des composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant des atomes autres que le silicium, le soufre, l'azote, l'oxygène et le carboneCompositions contenant des dérivés de tels polymères contenant du phosphore

Abrégé

The present invention relates to the field of coal mine safety, and relates to a mine disaster tracing method based on a knowledge graph, comprising: firstly, establishing a mine disaster associated knowledge graph, which mainly comprises three steps of constructing a mine disaster tracing conceptual model, extracting entities on the basis of a relational database and a geological graph, and establishing a relation among the entities on the basis of a positional relation and process logic in the conceptual model; then, constructing feature indexes of entity objects, and determining transfer rules of the entity objects, the construction being carried out respectively according to four types of entities, namely a discrete reporting type entity, a continuous monitoring type entity, a geological structure type entity and a geological continuous type entity; and finally, after a disaster early warning at a certain place of a mine is issued, carrying out mine disaster tracing on the basis of the transfer rules of the entity objects and a graph traversal algorithm, and providing a direct cause and a root cause of the occurrence of a disaster. According to the present invention, mine disaster tracing is carried out by establishing a professional disaster knowledge graph and using a graph algorithm, and the method has the advantages of systematicness and real-time performance.

Classes IPC  ?

• G06F 16/901 - IndexationStructures de données à cet effetStructures de stockage
• G06F 16/2455 - Exécution des requêtes
• G06F 16/2458 - Types spéciaux de requêtes, p. ex. requêtes statistiques, requêtes floues ou requêtes distribuées

Abrégé

The present invention belongs to the field of coal mine safety and disaster analysis. Disclosed are a natural-fission-based multi-disaster fusion early warning method and system for a coal mine. The method comprises: first, establishing a relationship model between object entities of a multi-disaster fusion early warning for a coal mine, constructing a relationship network for the object entities of the multi-disaster fusion early warning for the coal mine, and updating the network according to a rule; then establishing a sensor monitoring object trend prediction model based on a long short-term memory (LSTM) artificial neural network model, and constructing a natural fission analysis rule; then establishing a method for identifying early abnormalities of a single-disaster type in the coal mine, said method being based on a disaster indicator prediction method and a disaster early warning system; and finally, when a given disaster prediction and early warning indicator of the coal mine has an early abnormality, traversing other disaster prediction and early warning indicators on the basis of a depth-first traversal algorithm and a natural fission rule, and giving a prompt of performing targeted prediction and forecasting. The present invention establishes a potential relationship chain between prediction and early warning indicators by means of association analysis, achieving the advantages of multi-dimensional comprehensive analysis and advanced trend analysis.

Classes IPC  ?

• G06F 30/27 - Optimisation, vérification ou simulation de l’objet conçu utilisant l’apprentissage automatique, p. ex. l’intelligence artificielle, les réseaux neuronaux, les machines à support de vecteur [MSV] ou l’apprentissage d’un modèle

Abrégé

Disclosed is an apparatus for regionalized coal mine methane drainage in a deep hole, comprising a high-pressure large-flow centralized liquid supply apparatus, a while-drilling radar geological detection apparatus (4), a deep-hole self-adaptive directional drilling rig apparatus, an electromagnetic transmission high-pressure sealing column (5), and an open-hole while-drilling staged fracturing tool string. The while-drilling radar geological detection apparatus continuously detects a geological formation and a coal-rock interface in real time in a drilling process; the deep-hole self-adaptive directional drilling rig apparatus adaptively adjusts a propelling force and a swivel speed on the basis of the detection result, so as to improve the drilling efficiency, and reduce the probability of drill jamming and bit balling in the drilling process; and methane control in a large area, and in particular, the design of drainage boreholes, while-drilling radar geological detection, self-adaptive drilling, staged fracturing of main boreholes, and while-drilling fracturing of branch boreholes of a weak seam can be effectively guided, so as to implement advanced and highly-efficient drainage of methane of a coal mine dominated by the weak seam in a laneless down-hole large area. Further disclosed is a method of using the apparatus.

Classes IPC  ?

• E21B 7/04 - Forage dirigé