Abstract

The invention relates to a method for measuring a flow velocity (v) of a gas stream (14) featuring the steps: (a) time-resolved measurement of an IR radiation parameter (E) of IR radiation of the gas stream (14) at a first measurement point (P1) outside of the gas stream (14), thereby obtaining a first IR radiation parameter curve (Eg1,1(t)), (b)time-resolved measurement of an IR radiation parameter (E) at a second measurement point (P2) outside of the gas stream (14), thereby obtaining a second IR radiation parameter curve (Eg1,2(t)), (c) calculation of a transit time (τ1) from the first IR radiation parameter curve (Eg1,1(t)) and the second IR radiation parameter curve (Eg1,2(t)), in particular by means of cross-correlation, and (d) calculation of the flow velocity (vG) from the transit time (τ1), (e) wherein the IR radiation parameter (Eg1) is measured photoelectrically at a wavelength (g1) of at least 780 nm, and (f) a measurement frequency (f) is at least 1 kilohertz.

IPC Classes  ?

• G01F 1/7086 - Measuring the time taken to traverse a fixed distance using optical detecting arrangements
• G01F 1/704 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
• G01F 1/712 - Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means

Abstract

A metallurgical melting furnace having a furnace vessel, an offgas removal device disposed therein for removal of an offgas stream, and an air feed opening for feeding air to the offgas stream, provides a method of determining the amount of heteromolecular gas and a method of determining the temperature of the gas.

IPC Classes  ?

• C21C 5/46 - Details or accessories

Abstract

g1) is measured photoelectrically at a wavelength (g1) of at least 780 nm, and (f) a measurement frequency (f) is at least 1 kilohertz.

IPC Classes  ?

• G01F 1/704 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
• G01F 1/7086 - Measuring the time taken to traverse a fixed distance using optical detecting arrangements
• G01F 1/712 - Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means

Abstract

The invention relates to a metallurgical melting furnace comprising a furnace vessel, a waste-gas discharge device which is arranged thereon and is intended for discharging a waste gas stream, and an air-supply opening for supplying air to the waste gas stream. According to the invention, a photodiode is arranged on the waste-gas discharge device downstream of the air-supply opening so as to be spaced from a measurement opening. The electromagnetic radiation generated by the hot molecules in the interior of the waste-gas discharge device is then detected and statistically analysed. The invention also relates to a method for determining the amount of heteromolecular gas and to a method for determining the temperature of the gas.

IPC Classes  ?

• C21C 5/46 - Details or accessories
• F27B 3/28 - Arrangement of controlling, monitoring, alarm or like devices
• F27D 19/00 - Arrangement of controlling devices
• G01N 21/53 - Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
• G01N 21/71 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited

Abstract

The invention relates to a metallurgical melting furnace comprising a furnace vessel, a waste-gas discharge device which is arranged thereon and is intended for discharging a waste gas stream, and an air-supply opening for supplying air to the waste gas stream. According to the invention, a photodiode is arranged on the waste-gas discharge device downstream of the air-supply opening so as to be spaced from a measurement opening. The electromagnetic radiation generated by the hot molecules in the interior of the waste-gas discharge device is then detected and statistically analysed. The invention also relates to a method for determining the amount of heteromolecular gas and to a method for determining the temperature of the gas.

IPC Classes  ?

• C21C 5/46 - Details or accessories
• F27B 3/28 - Arrangement of controlling, monitoring, alarm or like devices
• F27D 19/00 - Arrangement of controlling devices
• G01N 21/53 - Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
• G01N 21/71 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited

Abstract

g1) is measured photoelectrically at a wavelength (g1) of at least 780 nm, and (f) a measurement frequency (f) is at least 1 kilohertz.

IPC Classes  ?

• G01F 1/7086 - Measuring the time taken to traverse a fixed distance using optical detecting arrangements
• G01F 1/704 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
• G01F 1/712 - Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means

Abstract

A wind turbine for generating electric energy including a tower equipped with rotatable nacelle with rotor which is rotatable about a horizontal rotational axis and which comprises an electric generator. The wind turbine additionally comprises a device for determining flow direction and speed of the wind and a device for or regulating the alignment of the rotor against the wind. The device for determining speed and flow direction comprises pair of receiving antennas, for obtaining electric signals using electrically influenced particles, molecules carried by the wind and are supplied to a correlation measurement device. Here, the time needed by the electrically influenced particles/molecules to traverse the distance between the receiving antennas of a pair of receiving antennas is determined. Subsequently, speed and flow direction of the wind are calculated in a computing device and are supplied to the device for controlling or regulating the alignment of the rotor.

IPC Classes  ?

• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• G01P 13/04 - Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
• G01P 5/08 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
• G01P 5/20 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken by the fluid to traverse a fixed distance using particles entrained by a fluid stream
• G01P 5/22 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken by the fluid to traverse a fixed distance using auto-correlation or cross-correlation detection means

Abstract

g1,1g1,2g1,1g1,2g1g1) being measured photoelectrically at a wavelength (g1) of at least 780 nm and (f) a measurement frequency (f) amounting to at least 1 kilohertz.

IPC Classes  ?

• G01F 1/704 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
• G01F 1/708 - Measuring the time taken to traverse a fixed distance

Abstract

The invention relates to a method for measuring a flow velocity (v) of a gas stream (14), comprising the steps of: (a) time-resolved measuring of an IR radiation parameter (E) of IR radiation of the gas stream (14) to a first measurement point (P1) outside the gas stream (14), such that a first IR radiation parameter curve (Eg1,1(t)) is obtained, (b) time-resolved measuring of an IR radiation parameter (E) at a second measurement point (P2) outside the gas stream (14), such that a second IR radiation parameter curve (Eg1,2(t)) is obtained, (c) calculating a transit time (t1) from the first IR radiation parameter curve (Eg1,1(t)) and the second IR radiation parameter curve (Eg1,2(t)), in particular by means of cross-correlation, and (d) calculating the flow velocity (vG) from the transit time (t1), (e) the IR radiation parameter (Eg1) being measured photoelectrically at a wavelength (g1) of at least 780 nm and (f) a measurement frequency (f) amounting to at least 1 kilohertz.

IPC Classes  ?

• G01F 1/704 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter

Abstract

The invention relates to a wind turbine for harvesting electric energy, comprising a tower equipped with a rotatable gondola with a rotor which can be rotated about a horizontal rotational axis and which comprises an electric generator. The wind turbine additionally comprises a device for determining the flow direction and the speed of the incident wind and a device for controlling or regulating the alignment of the rotor against the incident wind. For this purpose, the device for determining the speed and the flow direction comprises receiving antenna pairs, by means of which electric signals are obtained using electrically influenced particles or air molecules carried by the incident wind and are supplied to a correlation measurement device. In the correlation measurement device, the time needed by the electrically influenced particles or molecules to traverse the distance between the receiving antennas of a receiving antenna pair is determined. Subsequently, the speed and the flow direction of the wind is calculated in a computing unit and are supplied to the device for controlling or regulating the alignment of the rotor.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• G01P 5/08 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
• G01P 5/20 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken by the fluid to traverse a fixed distance using particles entrained by a fluid stream
• G01P 5/22 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken by the fluid to traverse a fixed distance using auto-correlation or cross-correlation detection means
• G01P 13/04 - Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement

Abstract

The invention relates to a wind turbine for harvesting electric energy, comprising a tower equipped with a rotatable gondola with a rotor which can be rotated about a horizontal rotational axis and which comprises an electric generator. The wind turbine additionally comprises a device for determining the flow direction and the speed of the incident wind and a device for controlling or regulating the alignment of the rotor against the incident wind. For this purpose, the device for determining the speed and the flow direction comprises receiving antenna pairs, by means of which electric signals are obtained using electrically influenced particles or air molecules carried by the incident wind and are supplied to a correlation measurement device. In the correlation measurement device, the time needed by the electrically influenced particles or molecules to traverse the distance between the receiving antennas of a receiving antenna pair is determined. Subsequently, the speed and the flow direction of the wind is calculated in a computing unit and are supplied to the device for controlling or regulating the alignment of the rotor.

IPC Classes  ?

• G01P 5/08 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
• G01P 5/20 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken by the fluid to traverse a fixed distance using particles entrained by a fluid stream
• G01P 5/22 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken by the fluid to traverse a fixed distance using auto-correlation or cross-correlation detection means
• G01P 13/04 - Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

The invention relates to a device for controlling the combustion process in a power station furnace system, comprising burners (1) arranged in a wall of a combustion chamber, in which the combustion air is supplied via an annular gap (3) surrounding the burner (1) and the burner (1) comprises means for influencing the quantity of combustion air flowing through the annular gap (3), said device comprising means for recording the quantity of fuel supplied to a burner (1), and means for determining the quantity of combustion air flowing through the annular gap (3). The means for determining the quantity of combustion air flowing through the annular gap (3) comprise two sensor rods (11, 12), forming a pair of rods corresponding with each other, which are arranged in the annular gap (3.1), successively and in parallel, preferably transversely to the longitudinal axis (4) of the annular gap and in the flow direction (7) of the combustion air flow, the sensor rods (11, 12) being arranged such that at least part of the combustion air flowing past the first sensor rod (12) in the flow direction (7) of the combustion air flow also flows past the second sensor rod (11) in the flow direction (7) of the combustion air flow. The sensor rods (11, 12) are electrically connected to a correlation measurement device (13), by means of which the speed of the combustion air flow is determined by evaluating the electrical signals generated by electric induction, and the quantity of combustion air flowing through the annular gap (3.1) is determined on the basis of the cross-sectional surface of the annular gap (3.1). The combustion process is controlled accordingly by modifiying the quantity of combustion air.

IPC Classes  ?

• F23N 1/02 - Regulating fuel supply conjointly with air supply
• F23N 5/18 - Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Goods & Services

Electric equipment for the metrological capture of parameters for process-engineering processes, namely equipment for taking samples and for processing samples, electric analysis equipment for determining the composition of substances, electric measuring equipment and sensors for generating electric measured values for determining temperature, pressure, flow velocity, components, mass density and mass flow of flowing media in single- or multi-phase flow and components and mass density of mixtures of substances; Electric equipment for processing electric measured values and measured value sequences and equipment for transmission of electric measured values and measured value sequences, via fixed wires, radio, ultrasound or infrared; Electric and electronic equipment, namely memory-programmable controls, microcomputers and computers for processing electric measured values and measured value sequences for monitoring process-engineering processes and for generating electric actuating variables for influencing process-engineering processes; Computer software, namely control and regulating programs and database systems for processing electric measured values and measured value sequences for monitoring engineering processes and for generating actuating variables for influencing process-engineering processes and test programs for testing the functioning and the effectiveness of electric and electronic equipment for capturing the parameters of process-engineering processes, the monitoring of these processes and generating of actuating variables for influencing these processes. Installation, repair and maintenance of electric and electronic equipment for the metrological capture, monitoring and influence of parameters of process-engineering processes. Conducting scientific experiments, namely experiments into process-engineering processes with the aim of determining parameters for monitoring and influencing these processes and electric equipment for detecting, processing and influencing these parameters; Design and development of computer software for processing electric measured values and measured value sequences, for monitoring process-engineering processes and for generating electric actuating variables for influencing process-engineering processes; Installation and maintenance of software.