CN211694990U - Fuel calorific value control device of multi-gas-source gas turbine - Google Patents
Fuel calorific value control device of multi-gas-source gas turbine Download PDFInfo
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- CN211694990U CN211694990U CN201922443827.0U CN201922443827U CN211694990U CN 211694990 U CN211694990 U CN 211694990U CN 201922443827 U CN201922443827 U CN 201922443827U CN 211694990 U CN211694990 U CN 211694990U
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Abstract
The utility model relates to a many air supplies gas turbine's fuel calorific value controlling means, it includes: at least two gas source pipelines; at least two flow valves which are in one-to-one correspondence with the gas source pipelines, wherein inlets of the flow valves are connected with the gas source pipelines; the inlet of the mixing device is communicated with the outlets of the flow valves; the fuel concentration detector is arranged at the outlet of the mixing device; the controller is electrically connected with the fuel concentration detector and each flow valve; the remote control end is in communication connection with the controller; the fuel concentration detector is used for detecting the fuel concentration at the outlet of the mixing device and transmitting a fuel concentration signal to the controller, the controller converts the fuel concentration signal into a fuel heat value signal and transmits the fuel heat value signal to the remote control end, the remote control end sends out a control signal to the controller according to the fuel heat value signal, and the controller controls the opening degree of each flow valve according to the control signal. The utility model discloses can carry out long-range, real time monitoring and regulation, it is simple convenient to the fuel calorific value.
Description
Technical Field
The utility model relates to a fuel calorific value controlling means of air supply gas turbine.
Background
With the continuous development of society, the nation advocates the efficient and clean utilization of energy, and the installed capacity of a gas-steam combined cycle generator set taking natural gas as fuel is increased year by year, so that the dependence of the power industry on the natural gas is also increased continuously.
Natural gas is used as a conventional fuel of a gas turbine, but different gas sources often have larger difference in calorific value, for example, gas sources of different pipelines are mixed for use, because each gas source has certain fluctuation in flow and components, the calorific value of the fuel entering the gas turbine after mixing fluctuates, and in order to enable the combustion condition of a combustion chamber of the gas turbine to be in an acceptable fluctuation range, the calorific value of the fuel entering the combustion chamber must be monitored and controlled.
At present, a DCS system is adopted to monitor the process for 24 hours in engineering, the DCS system is complex, and an operator on duty needs to operate for 24 hours on duty, the operator on duty usually mainly focuses on the operation condition of main power equipment, the monitoring of the heat value is usually neglected easily, the influence of the heat value of an air source on a combustion chamber has long hysteresis, the equipment is stopped in production in most cases, the heat value can be discovered during overhaul, and the efficiency and the service life of the combustion chamber of the gas turbine are greatly shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the defects of the prior art are overcome, and the fuel heat value control device of the multi-gas-source gas turbine is provided, so that the fuel heat value entering the combustion chamber can be remotely monitored and adjusted in real time, and the operation is convenient and accurate.
In order to achieve the above object, the present invention provides a fuel calorific value control apparatus of a multi-gas source gas turbine, which includes:
at least two gas source pipelines;
the flow valves are arranged corresponding to the gas source pipelines one by one, and inlets of the flow valves are connected with the gas source pipelines;
the inlet of the mixing device is communicated with the outlets of the flow valves;
the fuel concentration detector is arranged at the outlet of the mixing device;
the controller is electrically connected with the fuel concentration detector and each flow valve; and
and the remote control end is in communication connection with the controller.
Preferably, the remote control end comprises a control component, a storage component and a display which are electrically connected with each other;
the controller can output fuel calorific value signal, the control module is used for receiving the fuel calorific value signal of controller output to feedback control signal extremely the controller, the storage subassembly is used for storing the fuel calorific value signal and send it to the display, the display is used for showing the real-time change curve of fuel calorific value signal.
Preferably, the mixing device comprises a mixer and a cyclone which are connected in sequence, and an inlet of the mixer is communicated with an outlet of each flow valve.
Preferably, the remote control terminal is a PC or a mobile terminal.
Preferably, the remote control end is connected with the controller in a wireless communication mode.
Preferably, the fuel concentration detector is a methane concentration detector.
Preferably, the fuel calorific value control apparatus of a multi-gas source gas turbine further includes:
the inlet of the combustion chamber is communicated with the outlet of the mixing device, and the fuel concentration detector is connected in series to a pipeline which is communicated with the mixing device and the combustion chamber; and
and the inlet of the turbine assembly is communicated with the outlet of the combustion chamber.
The fuel heat value control device of the gas turbine comprises a gas compressor, wherein an air suction port of the gas compressor is communicated with the external environment, and an air exhaust port of the gas compressor is communicated with the combustion chamber.
The embodiment of the utility model provides a many air supplies gas turbine's fuel calorific value controlling means, compare with prior art, its beneficial effect lies in:
when the gas turbine is connected into a multi-path gas source, the fuel concentration can be collected in real time by arranging the fuel concentration detector, the fuel concentration is converted into a fuel heat value through the controller and is transmitted to the remote control end, the remote control end can send a control signal to the controller to control the opening adjustment of the flow valves on the pipelines of each gas source, and the fuel heat value entering the combustion chamber can be remotely monitored and adjusted in real time.
Drawings
FIG. 1 is a schematic diagram of a fuel calorific value control apparatus of a multi-source gas turbine according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for controlling the fuel calorific value of a multi-source gas turbine according to an embodiment of the present invention;
in the figure, 1, an air source pipeline; 2. a flow valve; 3. a mixing device; 31. a mixer; 32. a swirler; 4. a fuel concentration detector; 5. a controller; 6. a remote control end; 7. a combustion chamber; 8. a turbine assembly; 9. a compressor is provided.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "first", "second", and the like are used in the present invention to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1, a fuel calorific value control apparatus of a multi-gas source gas turbine according to a preferred embodiment of the present invention includes: the system comprises at least two gas source pipelines 1, at least two flow valves 2, a mixing device 3, a fuel concentration detector 4, a controller 5 and a remote control end 6; at least two flow valves 2 and each air supply pipeline 1 are arranged in a one-to-one corresponding mode, inlets of the flow valves 2 are connected with the air supply pipelines 1, inlets of a mixing device 3 are communicated with outlets of the flow valves 2, a fuel concentration detector 4 is arranged at an outlet of the mixing device 3 and used for detecting a fuel concentration value of the outlet of the mixing device 3, a controller 5 is electrically connected with the fuel concentration detector 4 and each flow valve 2, and a remote control end 6 is in communication connection with the controller 5.
Based on the technical scheme, natural gas from multiple gas sources in different ways is respectively input through different gas source pipelines 1, enters a mixing device 3 through a flow valve 2 to form uniformly mixed natural fuel, and the mixed natural fuel is output to a combustion chamber for combustion; in this embodiment, the specific control process of the fuel calorific value control device of the multi-gas-source gas turbine is as follows: the fuel concentration detector 4 is used for detecting the fuel concentration at the outlet of the mixing device 3 and transmitting a fuel concentration signal to the controller 5, the controller 5 converts the fuel concentration signal into a fuel calorific value signal and transmits the fuel calorific value signal to the remote control terminal 6, the remote control terminal 6 sends a control signal to the controller 5 according to the fuel calorific value signal, and the controller 5 controls the opening degree of each flow valve 2 according to the control signal, so that the fuel calorific value is adjusted.
Therefore, the fuel calorific value control device of the multi-gas-source gas turbine in the embodiment can monitor and adjust the fuel calorific value remotely and in real time through the remote control end 6, and can replace the monitoring function of DCS (distributed control system) operators on duty in a monitoring room, so that the monitoring and the adjustment are more convenient and reliable, and the use efficiency and the service life of the combustion chamber of the gas turbine are improved.
Preferably, in this embodiment, in order to better monitor the fuel calorific value data in real time and provide real-time data for operating condition analysis, the remote control terminal 6 includes a control component, a storage component and a display (not shown in the drawings); the control assembly is used for receiving the fuel calorific value signal that controller 5 output to feedback control signal extremely controller 5, the storage assembly is used for storing the fuel calorific value signal and send it to the display, the display is used for showing the real-time change curve of fuel calorific value signal.
Further, in this embodiment, in order to mix the multiple air sources uniformly, the mixing device 3 includes a mixer 31 and a cyclone 32 connected in series, an inlet of the mixer 31 is communicated with an outlet of each flow valve 2, and an outlet of the cyclone 32 is defined as an outlet of the mixing device 3.
For remote monitoring and adjustment, the remote control terminal 6 may be a receiving device for receiving signals through a local area network, or may be a device for receiving signals through the internet, such as a PC or a mobile terminal.
Preferably, in this embodiment, the remote control terminal 6 is connected with the controller 5 by wireless communication.
Further, since methane is a main combustion component in natural gas, the fuel concentration detector 4 in this embodiment is a methane concentration detector for detecting the concentration of methane in the mixed natural gas.
As shown in fig. 1, the fuel calorific value control device of the multi-gas source gas turbine in this embodiment further includes a combustion chamber 7, a compressor 9 and a turbine assembly 8, an inlet of the combustion chamber 7 is communicated with an outlet of the mixing device 3, the fuel concentration detector 4 is connected in series to a pipeline communicating the mixing device 3 with the combustion chamber 7, an air suction port of the compressor 9 is communicated with an external environment, an air exhaust port of the compressor 9 is communicated with the combustion chamber 7, and an inlet of the turbine assembly 8 is communicated with an outlet of the combustion chamber 7; the mixed natural gas enters a combustion chamber 7 to be mixed and combusted with compressed air from a compressor 9, and the combusted high-temperature and high-pressure gas enters a turbine assembly 8 to complete expansion work.
In a second aspect of the present invention, there is provided a control method of the fuel calorific value control apparatus of the multi-gas source gas turbine according to the first aspect, as shown in fig. 2, which includes the steps of:
s10, detecting the fuel concentration of the mixed gas sources by the fuel concentration detector 4, and transmitting a fuel concentration signal to the controller 5;
s20, converting the fuel concentration signal into a fuel heat value signal by the controller 5 and transmitting the fuel heat value signal to the remote control end 6;
s30, the remote control end 6 sends a control signal to the controller 5 according to the fuel heat value signal;
and S40, controlling the opening degree of each flow valve 2 by the controller 5 according to the control signal.
Specifically, the step S30 specifically includes the following steps:
judging whether the fuel calorific value is in a preset fuel calorific value early warning value range or not according to the fuel calorific value signal;
when the fuel heat value exceeds the preset early warning value range, outputting a first control signal to enable the controller 5 to control each flow valve 2 to adjust the opening degree until the fuel heat value is within the preset early warning value of the fuel heat value, and at the moment, the fuel heat value is in the reciprocating circular dynamic balance process;
and when the calorific value of the fuel is within the preset early warning value range, outputting a second control signal to enable the controller 5 to control each flow valve 2 to keep the current opening.
In this embodiment, in order to monitor the fuel calorific value data in real time at the remote control terminal 6, the remote control terminal 6 may further store the fuel calorific value signal and display a real-time variation curve of the fuel calorific value signal.
To sum up, the embodiment of the utility model provides a many air supplies gas turbine's fuel calorific value controlling means and control method thereof, when gas turbine inserts multichannel air supply, can gather fuel concentration in real time through setting up the fuel concentration detector to convert fuel concentration into fuel calorific value and transmit to the remote control end through the controller, the remote control end can send control signal to controller, the aperture of the flow valve on the control each air supply pipeline is adjusted, can be long-range, real time monitoring and adjust the fuel calorific value that gets into the combustion chamber.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (8)
1. A fuel calorific value control apparatus for a multiple gas source gas turbine, comprising:
at least two gas source pipelines;
the flow valves are arranged corresponding to the gas source pipelines one by one, and inlets of the flow valves are connected with the gas source pipelines;
the inlet of the mixing device is communicated with the outlets of the flow valves;
the fuel concentration detector is arranged at the outlet of the mixing device;
the controller is electrically connected with the fuel concentration detector and each flow valve; and
and the remote control end is in communication connection with the controller.
2. The fuel calorific value control device of a multi-gas source gas turbine according to claim 1, wherein said remote control terminal comprises a control unit, a storage unit and a display electrically connected to each other;
the controller can output fuel calorific value signal, the control module is used for receiving the fuel calorific value signal of controller output to feedback control signal extremely the controller, the storage subassembly is used for storing the fuel calorific value signal and send it to the display, the display is used for showing the real-time change curve of fuel calorific value signal.
3. The fuel calorific value control device of a multi-gas source gas turbine according to claim 1, wherein said mixing means comprises a mixer and a swirler which are connected in series, and an inlet of said mixer is connected to an outlet of each flow valve.
4. The fuel calorific value control apparatus for a multi-gas source gas turbine according to claim 1, wherein said remote control terminal is a PC or a mobile terminal.
5. The multiple gas source gas turbine fuel calorific value control apparatus of claim 1, wherein said remote control terminal is connected to said controller by wireless communication.
6. The fuel heating value control apparatus for a multiple-gas source gas turbine as defined in claim 1, wherein said fuel concentration detector is a methane concentration detector.
7. The fuel heating value control apparatus of a multi-gas source gas turbine as set forth in any one of claims 1 to 6, further comprising:
the inlet of the combustion chamber is communicated with the outlet of the mixing device, and the fuel concentration detector is connected in series to a pipeline which is communicated with the mixing device and the combustion chamber; and
and the inlet of the turbine assembly is communicated with the outlet of the combustion chamber.
8. The fuel calorific value control device of a multi-gas source gas turbine according to claim 7, further comprising a compressor, an intake port of said compressor communicating with an external environment, and an exhaust port of said compressor communicating with said combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922443827.0U CN211694990U (en) | 2019-12-27 | 2019-12-27 | Fuel calorific value control device of multi-gas-source gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922443827.0U CN211694990U (en) | 2019-12-27 | 2019-12-27 | Fuel calorific value control device of multi-gas-source gas turbine |
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| Publication Number | Publication Date |
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| CN211694990U true CN211694990U (en) | 2020-10-16 |
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| CN201922443827.0U Active CN211694990U (en) | 2019-12-27 | 2019-12-27 | Fuel calorific value control device of multi-gas-source gas turbine |
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- 2019-12-27 CN CN201922443827.0U patent/CN211694990U/en active Active
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Address after: Room 511, North Building, No. 89 Ruihe Road, Huangpu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangzhou Zhiguang energy conservation and environmental protection Co.,Ltd. Address before: Room 511, 121 science Avenue, Science City, Guangzhou high tech Industrial Development Zone, Guangzhou, Guangdong 510535 Patentee before: GUANGDONG ZHIGUANG ENERGY Co.,Ltd. |