CN107101831B - Combustion test stand for gas turbine, combustion test control method and device - Google Patents
Combustion test stand for gas turbine, combustion test control method and device Download PDFInfo
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- CN107101831B CN107101831B CN201710344382.3A CN201710344382A CN107101831B CN 107101831 B CN107101831 B CN 107101831B CN 201710344382 A CN201710344382 A CN 201710344382A CN 107101831 B CN107101831 B CN 107101831B
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Abstract
The invention relates to the technical field of gas turbines, and discloses a combustion test stand, a combustion test control method and a combustion test control device for a gas turbine, which are used for changing the air temperature working condition of test section equipment, so that energy sources are saved, and the accuracy of test results is improved. The combustion test bed comprises air source equipment, regenerative equipment, test section equipment, exhaust equipment and a control valve, wherein: the test section equipment comprises an air inlet and an air outlet; the heat regenerating device comprises an air inlet communicated with the air source device, an air outlet communicated with the air inlet of the test section device, a smoke inlet communicated with the air outlet of the test section device and a smoke outlet communicated with the exhaust device; the air source equipment is communicated with the exhaust equipment; the control valve comprises a first valve port communicated with the air source equipment, a second valve port communicated with the air inlet of the regenerative equipment and a third valve port communicated with the air inlet of the test section equipment.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a combustion test stand for a gas turbine, a combustion test control method and a combustion test control device.
Background
The gas turbine is used as an auxiliary power device, has the characteristics of compact structure, light weight, low maintenance cost and the like, and is widely applied to the field of distributed energy power generation. The combustor is one of the important components in a gas turbine, and its performance is an important indicator of the advancement of the gas turbine.
The experimental research system of the combustion test bed can be used for researching the performance of the combustion chamber of the miniature gas turbine and related combustion technology under normal pressure and high pressure conditions, and lays a foundation for independently designing and developing the combustion chamber of the miniature gas turbine and the whole machine product. The combustion test bed mainly comprises air source equipment, regenerative equipment, test section equipment and exhaust equipment, wherein: the air source equipment, the heat recovery equipment and the test section equipment are sequentially connected, and the exhaust equipment is respectively connected with the air source equipment, the heat recovery equipment and the test section equipment. Because the combustion test bed needs to control test temperature conditions in the test process, the heat regenerating device usually adopts an electric heater or a precombustion combustion chamber to preheat air entering the test section device.
The prior art has the defects that when an electric heater is adopted to preheat air, the electric power of the electric heater is high, and the electric power of the electric heater is difficult to meet with a common combustion test bed; when the precombustion combustion chamber is adopted for preheating air, the precombustion inevitably consumes a certain amount of air, so that the components of the test section equipment are changed, and the accuracy of test results is reduced.
Disclosure of Invention
The embodiment of the invention aims to provide a combustion test stand, a combustion test control method and a combustion test control device for a gas turbine, so as to change the air temperature working condition of test section equipment, save energy and improve the accuracy of test results.
The embodiment of the invention provides a combustion test bed for a gas turbine, which comprises gas source equipment, regenerative equipment, test section equipment, exhaust equipment and a control valve, wherein:
the test section equipment comprises an air inlet and an air outlet; the heat regeneration equipment comprises an air inlet communicated with the air source equipment, an air outlet communicated with the air inlet of the test section equipment, a smoke inlet communicated with the air outlet of the test section equipment and a smoke outlet communicated with the exhaust equipment; the air source equipment is communicated with the exhaust equipment;
the control valve comprises a first valve port communicated with the air source equipment, a second valve port communicated with an air inlet of the regenerative equipment and a third valve port communicated with an air inlet of the test section equipment; the control valve is provided with a first working state and a second working state, when the control valve is in the first working state, the first valve port is communicated with the second valve port, and the third valve port is closed; when the control valve is in the second working state, the first valve port is communicated with the third valve port, and the second valve port is closed.
Optionally, the control valve comprises a solenoid valve, a pneumatic valve or an electric valve.
Preferably, the combustion test stand further comprises a cooling device arranged on a pipeline between the smoke inlet of the heat regenerating device and the exhaust port of the test section device, and the cooling device is used for cooling smoke exhausted by the exhaust port of the test section device.
Preferably, the cooling device comprises a heat exchanger and a cooling water circulation device, the cooling water circulation device is provided with an inlet and an outlet, the heat exchanger is provided with a high-temperature fuel gas inlet communicated with the exhaust port of the test section device, a high-temperature fuel gas outlet communicated with the flue gas inlet of the regenerative device, a cooling water inlet communicated with the outlet of the cooling water circulation device, and a cooling water outlet communicated with the inlet of the cooling water circulation device.
Preferably, the combustion test stand further comprises:
the first temperature detection device is arranged at the air inlet of the test section device and is used for detecting the temperature of air at the air inlet;
the control device is respectively connected with the control valve and the first temperature detection device and is used for acquiring the temperature value of the air at the air inlet detected by the first temperature detection device; when the air temperature value detected by the first temperature detection equipment is lower than a set first temperature threshold value, a first valve port and a second valve port of the control valve are controlled to be communicated, and a third valve port of the control valve is closed; and when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, controlling the first valve port of the control valve to be communicated with the third valve port, and closing the second valve port of the control valve.
Preferably, the combustion test stand further comprises a first flowmeter and a first flow valve which are arranged on a pipeline between the air source equipment and the regenerative equipment and are respectively connected with the control equipment;
the control device is further used for controlling the opening degree of the first flow valve to be reduced when the air flow value detected by the first flow meter is larger than a set first flow threshold value; and controlling the opening degree of the first flow valve to be increased when the air flow value detected by the first flow meter is smaller than a set second flow threshold value.
Preferably, the combustion test stand further comprises a pressure gauge arranged at the air inlet of the test section equipment and used for detecting the pressure of air at the air inlet, and a second flow valve arranged on a pipeline between the exhaust equipment and the smoke outlet of the regenerative equipment and connected with the control equipment;
the control device is further used for controlling the opening degree of the second flow valve to be reduced when the air pressure value detected by the pressure gauge is larger than a set air pressure threshold value; and controlling the opening degree of the second flow valve to be increased when the air pressure value detected by the pressure gauge is smaller than a set air pressure threshold value.
Preferably, the combustion test stand further comprises a second temperature detection device arranged at a flue gas inlet of the heat recovery device, the second temperature detection device is used for detecting the temperature of flue gas at the flue gas inlet, and the cooling device further comprises a third flow valve which is arranged on a pipeline between a cooling water inlet of the heat exchanger and an outlet of the cooling water circulation device and is connected with the control device;
the control device is further used for controlling the opening degree of the third flow valve to be reduced when the temperature value of the flue gas at the flue gas inlet detected by the second temperature detection device is lower than a set third temperature threshold value; and when the temperature value of the flue gas at the flue gas inlet detected by the second temperature detection equipment is higher than a set fourth temperature threshold value, controlling the opening of the third flow valve to be increased.
According to the combustion test bed for the gas turbine, provided by the embodiment of the invention, the heat returning equipment is adopted to preheat the air entering the test section equipment, and the proportion of cold air and hot air entering the test section equipment is controlled through the control valve, so that the air temperature working condition of the test section equipment is changed, and compared with the prior art, the combustion test bed reasonably utilizes the waste heat of flue gas, and saves more energy sources; in addition, the regenerative device does not need to consume components required by the test, thereby improving the accuracy of the test result.
The invention also provides a combustion test control method applied to the combustion test stand according to the technical scheme, which comprises the following steps:
acquiring a temperature value of air at the air inlet detected by the first temperature detection equipment;
when the air temperature value detected by the first temperature detection equipment is lower than a set first temperature threshold value, a first valve port and a second valve port of the control valve are controlled to be communicated, and a third valve port of the control valve is closed;
when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, a first valve port of the control valve is controlled to be communicated with a third valve port, and a second valve port of the control valve is closed.
According to the combustion test control method provided by the embodiment of the invention, the opening and closing of each valve port of the control valve can be automatically controlled according to the air temperature value detected by the first temperature detection equipment, so that the air temperature working condition of test section equipment is changed; in addition, the combustion test control method automatically controls the control valve, and the accuracy of test results is further improved.
The invention also provides a combustion test control device applied to the combustion test stand according to the technical scheme, which comprises:
a first acquisition unit configured to acquire a temperature value of air at the air inlet detected by the first temperature detection device;
a first control unit, configured to control, when the air temperature value detected by the first temperature detecting device is lower than a set first temperature threshold value, the first valve port and the second valve port of the control valve to be communicated, and to close a third valve port of the control valve; when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, a first valve port of the control valve is controlled to be communicated with a third valve port, and a second valve port of the control valve is closed.
According to the combustion test control device provided by the embodiment of the invention, the first control unit automatically controls the opening and closing of each valve port of the control valve after judging according to the temperature value acquired by the first acquisition unit, so that the air temperature working condition of test section equipment is changed; in addition, the first control unit automatically controls the control valve, so that the accuracy of the test result is further improved.
Drawings
FIG. 1 is a schematic view of a combustion test stand according to an embodiment of the present invention;
FIG. 2 is another schematic view of a combustion test stand according to an embodiment of the present invention;
FIG. 3 is a schematic view of a regenerative apparatus of a combustion test stand according to an embodiment of the present invention;
FIG. 4 is a schematic view of a combustion test stand according to another embodiment of the present invention;
FIG. 5 is a schematic view of a cooling apparatus of a combustion test stand according to an embodiment of the present invention;
FIG. 6 is a schematic view of a combustion test stand according to another embodiment of the present invention;
FIG. 7 is a schematic diagram of a combustion test control method according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a combustion test control apparatus according to an embodiment of the present invention.
Reference numerals:
1-an air source device; 2-backheating equipment; 3-test section equipment; 4-an exhaust apparatus; 5-a control valve;
6-a cooling device; 7-a first temperature detection device; 8-a first flowmeter; 9-a first flow valve;
10-check valve; 11-a second flow valve; 12-a third flow valve; 13-a fuel supply device;
22-air inlet; 23-an air outlet; 24-flue gas inlet; 25-a flue gas outlet; 31-air inlet;
32-exhaust port; 51-first valve port; 52-a second valve port; 53-third valve port; 61-heat exchanger;
62-cooling water circulation equipment; 63-high temperature gas inlet; 64-high temperature gas outlet;
65-cooling water inlet; 66-cooling water outlet; 67-inlet; 68-outlet;
80-combustion test control device; 81-a first acquisition unit; 82-a first control unit.
Detailed Description
In order to change the air temperature working condition of test section equipment, thereby saving energy and improving the accuracy of test results, the embodiment of the invention provides a combustion test bed for a gas turbine, a combustion test control method and a combustion test control device. The present invention will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1, an embodiment of the present invention provides a combustion test stand for a gas turbine, including a gas source apparatus 1, a heat regeneration apparatus 2, a test section apparatus 3, an exhaust apparatus 4, and a control valve 5, wherein:
the test section device 3 comprises an air inlet 31 and an air outlet 32; the backheating device 2 comprises an air inlet 22 communicated with the air source device 1, an air outlet 23 communicated with an air inlet 31 of the test section device 3, a smoke inlet 24 communicated with an air outlet 32 of the test section device 3 and a smoke outlet 25 communicated with the air exhaust device 4; the air source device 1 is communicated with the exhaust device 4;
the control valve 5 comprises a first valve port 51 communicated with the air source device 1, a second valve port 52 communicated with the air inlet 22 of the regenerative device 2 and a third valve port 53 communicated with the air inlet 31 of the test section device 3; the control valve 5 has a first working state and a second working state, when the control valve 5 is in the first working state, the first valve port 51 is communicated with the second valve port 52, and the third valve port 53 is closed; when the control valve 5 is in the second operating state, the first valve port 51 communicates with the third valve port 53, and the second valve port 52 is closed.
According to the combustion test bed for the gas turbine, provided by the embodiment of the invention, the heat returning device 2 is adopted to preheat the air entering the test section device 3, and the cold-hot air proportion entering the test section device 3 is controlled through the control valve 5, so that the air temperature working condition of the test section device 3 is changed, and compared with the prior art, the combustion test bed reasonably utilizes the waste heat of the flue gas, and saves more energy sources; in addition, the regenerative apparatus 2 does not need to consume components required for the test, thereby improving the accuracy of the test result.
In the present embodiment, the specific type of the control valve 5 is not limited, and may be, for example, a solenoid valve, a pneumatic valve, or an electric valve.
As shown in fig. 2 and 3, the air source device 1 discharges compressed air into the air inlet 22 of the heat recovery device 2, high-temperature fuel gas discharged from the exhaust port 32 of the test section device 3 enters the heat recovery device 2 from the flue gas inlet 24, the compressed air exchanges heat with the high-temperature fuel gas in the heat recovery device 2 and then is discharged from the air outlet 23, then enters the air inlet 31 of the test section device 3, and the heat exchanged flue gas is discharged into the exhaust device 4 from the flue gas outlet 25. Compared with the prior art, the heat recovery device 2 preheats the compressed air by utilizing the flue gas exhausted by the test section device 3, so that the air entering the test section device 3 can reach the working condition temperature required by the experiment, thereby saving energy sources; in addition, the regenerative apparatus 2 does not need to consume components required for the test, thereby improving the accuracy of the test result.
As shown in fig. 4 and 5, in the embodiment of the present invention, it is preferable that the combustion test stand further includes a cooling device 6 provided on a line between the smoke inlet 24 of the heat regenerating device 2 and the exhaust port 32 of the test section device 3, the cooling device 6 being for cooling the smoke exhausted from the exhaust port 32 of the test section device 3. The cooling apparatus 6 comprises a heat exchanger 61 and a cooling water circulation apparatus 62, the cooling water circulation apparatus 62 having an inlet 67 and an outlet 68, the heat exchanger 61 having a high temperature gas inlet 63 in communication with the exhaust port 32 of the test section apparatus 3, a high temperature gas outlet 64 in communication with the flue gas inlet 24 of the regenerator apparatus 2, a cooling water inlet 65 in communication with the outlet 68 of the cooling water circulation apparatus 62, and a cooling water outlet 66 in communication with the cooling water circulation apparatus 62 inlet 67. The high-temperature fuel gas discharged from the exhaust port 32 of the test section device 3 enters the heat exchanger 61 from the high-temperature fuel gas inlet 63, the cooling water flows out from the outlet 68 of the cooling water circulation device 62 and enters the heat exchanger 61 from the cooling water inlet 65, the high-temperature fuel gas is cooled after heat exchange with the cooling water in the heat exchanger 61, and is discharged into the regenerative device 2 from the high-temperature fuel gas outlet 64, and the cooling water after heat exchange flows back to the cooling water circulation device 62 from the inlet 67, so that damage to the regenerative device 2 caused by overhigh temperature of the high-temperature fuel gas can be reduced.
As shown in fig. 4 and 6, the combustion test stand further preferably includes: the first temperature detection device 7 is arranged at the air inlet 31 of the test section device 3 and is used for detecting the temperature of air at the air inlet 31; a control device (not shown) connected to the control valve 5 and the first temperature detecting device 7, respectively, for acquiring the temperature value of the air at the air inlet 31 detected by the first temperature detecting device 7; when the air temperature value detected by the first temperature detecting device 7 is lower than the set first temperature threshold value, the first valve port 51 of the control valve 5 is controlled to be communicated with the second valve port 52, and the third valve port 53 of the control valve 5 is closed; and when the air temperature value detected by the first temperature detecting device 7 is higher than the set second temperature threshold value, the first valve port 51 of the control valve 5 is controlled to communicate with the third valve port 53, and the second valve port 52 of the control valve 5 is closed. In this way, the control device can automatically control the opening and closing of each valve port of the control valve 5 according to the air temperature detected by the first temperature detection device 7, thereby changing the air temperature working condition of the test section device 3 and further improving the accuracy of the test result. The first temperature threshold and the second temperature threshold are respectively the minimum working condition temperature and the maximum working condition temperature required by the test section equipment 3 for testing, and can be determined empirically.
As shown in fig. 6, in the embodiment of the present invention, the combustion test stand preferably further comprises a first flowmeter 8 and a first flow valve 9 which are arranged on the pipeline between the air source device 1 and the heat recovery device 2 and are respectively connected with the control device; the control device is further configured to control the opening degree of the first flow valve 9 to decrease when the air flow value detected by the first flow meter 8 is greater than the set first flow threshold value; and controlling the opening degree of the first flow valve 9 to be increased when the air flow value detected by the first flow meter 8 is smaller than the set second flow threshold value. In this way, the control device can automatically control the first flow valve 9 to change the air temperature operating conditions of the test section device 3. Wherein the first flow threshold and the second flow threshold are respectively the highest and the lowest working flow of the air inlet of the regenerative device 2, which can be determined empirically.
Preferably, the combustion test stand further comprises a pressure gauge (not shown in the figure) arranged at the air inlet 31 of the test section device 3 and used for detecting the pressure of air at the air inlet 31, and a second flow valve 11 arranged on a pipeline between the exhaust device 4 and the flue gas outlet 25 of the heat recovery device 2 and connected with the control device; the control device is further configured to control the opening degree of the second flow valve 11 to decrease when the air pressure value detected by the pressure gauge is greater than the set air pressure threshold value; when the air pressure value detected by the pressure gauge is smaller than the set air pressure threshold value, the opening degree of the second flow valve 11 is controlled to be increased. The air pressure threshold is the working pressure required at the air inlet 31 of the test section device 3, and can be determined empirically.
Preferably, a check valve 10 is further arranged on the pipeline between the flue gas outlet 25 of the regenerative device 2 and the second flow valve 11 to prevent flue gas from flowing back into the regenerative device 2.
Preferably, the cooling device 6 further comprises a second temperature detection device (not shown in the figure) arranged at the flue gas inlet 24 of the heat recovery device 2, the second temperature detection device is used for detecting the temperature of the flue gas at the flue gas inlet 34, and the cooling device 6 further comprises a third flow valve 12 arranged on a pipeline between the cooling water inlet 65 of the heat exchanger 61 and the outlet 68 of the cooling water circulation device 62 and connected with the control device; the control device is further used for controlling the opening degree of the third flow valve 12 to be reduced when the temperature value of the flue gas at the flue gas inlet 24 detected by the second temperature detection device is lower than a set third temperature threshold value; and controlling the opening of the third flow valve 12 to increase when the temperature value of the flue gas at the flue gas inlet 24 detected by the second temperature detecting device is higher than the set fourth temperature threshold value. The control device thus can automatically control the flow rate of the cooling water entering the heat exchanger 61, so that the temperature of the high-temperature fuel gas can be controlled.
The third temperature threshold and the fourth temperature threshold are respectively the minimum flue gas temperature and the maximum flue gas temperature required by heat exchange of the heat recovery device, and can be determined empirically.
As shown in fig. 6, in the embodiment of the present invention, the combustion test stand further includes a fuel supply device 13 connected to the test section device 3 and used for supplying fuel to the test section device 3, and the fuel supply device 13 can supply fuel to the test section device 3 timely and continuously, so as to further improve the accuracy of the test result.
In the embodiment of the invention, the test section equipment 3 further comprises a switching section, a test section and a measurement section, wherein the switching section is used for connecting a combustion chamber to be tested with the test section equipment 3, the test section is used for testing the combustion chamber, and the measurement section is used for acquiring test data obtained by the test.
As shown in fig. 7, the present invention also provides a combustion test control method applied to the combustion test stand of the foregoing embodiment, including:
102, when the air temperature value detected by the first temperature detection device is lower than a set first temperature threshold value, a first valve port of a control valve is controlled to be communicated with a second valve port, and a third valve port of the control valve is closed;
and 103, when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, the first valve port of the control valve is controlled to be communicated with the third valve port, and the second valve port of the control valve is closed.
According to the combustion test control method provided by the embodiment of the invention, the opening and closing of each valve port of the control valve can be automatically controlled according to the air temperature value detected by the first temperature detection equipment, so that the air temperature working condition of test section equipment is changed; in addition, the combustion test control method automatically controls the control valve, and the accuracy of test results is further improved.
Preferably, when the combustion test stand further includes a first flow meter and a first flow valve which are disposed on a pipeline between the air source device and the heat recovery device and are respectively connected with the control device, the control method further includes:
acquiring a flow value of air on a pipeline between air source equipment and regenerative equipment detected by a first flowmeter;
controlling the opening degree of the first flow valve to decrease when the air flow value detected by the first flow meter is greater than the set first flow threshold value;
when the air flow value detected by the first flow meter is smaller than the set second flow threshold value, the opening degree of the first flow valve is controlled to be increased. Thus, the control device can automatically control the first flow valve to change the air temperature working condition of the test section device.
Preferably, when the combustion test stand further comprises a pressure gauge arranged at the air inlet of the test section device and used for detecting the pressure of air at the air inlet, and a second flow valve arranged on a pipeline between the exhaust device and the flue gas outlet of the regenerative device and connected with the control device, the control method further comprises:
acquiring a pressure value of air at an air inlet of test section equipment detected by a pressure gauge;
when the air pressure value detected by the pressure gauge is larger than the set air pressure threshold value, controlling the opening degree of the second flow valve to be reduced;
when the air pressure value detected by the pressure gauge is smaller than the set air pressure threshold value, the opening degree of the second flow valve is controlled to be increased. The control device can automatically control the opening of the second flow valve, can adjust the smoke quantity in the regenerative device, and further adjust the gas pressure of the regenerative device.
Preferably, when the combustion test stand further comprises a second temperature detection device arranged at the flue gas inlet of the heat recovery device, and the cooling device further comprises a third flow valve arranged on a pipeline between the cooling water inlet of the heat exchanger and the outlet of the cooling water circulation device and connected with the control device, the control method further comprises:
acquiring a temperature value of the flue gas at the flue gas inlet detected by the second temperature detection equipment;
when the smoke temperature value detected by the second temperature detection equipment is lower than a set third temperature threshold value, controlling the opening of the third flow valve to be reduced;
and when the smoke temperature detected by the second temperature detection device is higher than the set fourth temperature threshold value, controlling the opening degree of the third flow valve to be increased. Thus, the control device can automatically control the flow of the cooling water entering the heat exchanger, thereby controlling the temperature of the high-temperature fuel gas.
As shown in fig. 8, the present invention also provides a combustion test control apparatus 80 applied to the combustion test stand of the foregoing embodiment, comprising:
a first acquisition unit 81 for acquiring a temperature value of air at the air inlet detected by the first temperature detection device;
a first control unit 82, configured to control the first valve port and the second valve port of the control valve to communicate and close the third valve port of the control valve when the air temperature value detected by the first temperature detecting device is lower than a set first temperature threshold value; when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, the first valve port of the control valve is controlled to be communicated with the third valve port, and the second valve port of the control valve is closed.
According to the combustion test control device 80 provided by the embodiment of the invention, the first control unit 82 automatically controls the opening and closing of each valve port of the control valve after judging according to the temperature value acquired by the first acquisition unit 81, so that the air temperature working condition of test section equipment is changed, and compared with the prior art, the combustion test control device 80 reasonably utilizes the flue gas waste heat, and saves more energy sources; in addition, the first control unit 82 automatically controls the control valve, further improving the accuracy of the test results.
Preferably, when the combustion test stand further includes a first flow meter and a first flow valve disposed on a pipeline between the air source device and the heat regenerating device and respectively connected with the control device, the combustion test control device 80 further includes:
the second acquisition unit is used for acquiring the flow value of the air on the pipeline between the air source equipment and the heat regeneration equipment, which are detected by the first flowmeter;
a second control unit for controlling the opening degree of the first flow valve to be reduced when the air flow value detected by the first flow meter is greater than a set first flow threshold value; when the air flow value detected by the first flow meter is smaller than the set second flow threshold value, the opening degree of the first flow valve is controlled to be increased. Thus, the second control unit can automatically control the air flow and the pressure required by the first flow valve to adjust the test section equipment.
Preferably, when the combustion test stand further includes a pressure gauge disposed at the air inlet of the test section device and used for detecting the pressure of air at the air inlet, and a second flow valve disposed on the pipeline between the exhaust device and the flue gas outlet of the heat regenerating device and connected to the control device, the combustion test control device 80 further includes:
the third acquisition unit is used for acquiring the pressure value of the air at the air inlet of the test section equipment detected by the pressure gauge;
a third control unit for controlling the opening degree of the second flow valve to be reduced when the air pressure value detected by the pressure gauge is greater than the set air pressure threshold value; when the air pressure value detected by the pressure gauge is smaller than the set air pressure threshold value, the opening degree of the second flow valve is controlled to be increased. The third control unit can automatically control the opening of the second flow valve, can adjust the smoke quantity in the regenerative equipment and further adjust the gas pressure of the regenerative equipment.
Preferably, when the combustion test stand further includes a second temperature detecting device disposed at the flue gas inlet of the heat regenerating device, and the cooling device further includes a third flow valve disposed on a pipeline between the cooling water inlet of the heat exchanger and the outlet of the cooling water circulating device and connected to the control device, the combustion test control device 80 further includes:
a fourth obtaining unit, configured to obtain a temperature value of the flue gas at the flue gas inlet detected by the second temperature detecting device;
a fourth control unit for controlling the opening degree of the third flow valve to be reduced when the smoke temperature value detected by the second temperature detection device is lower than a set third temperature threshold value; and when the smoke temperature detected by the second temperature detection device is higher than the set fourth temperature threshold value, controlling the opening degree of the third flow valve to be increased. Thus, the fourth control unit can automatically control the flow of the cooling water entering the heat exchanger, thereby controlling the temperature of the high-temperature fuel gas.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (16)
1. A combustion test stand for a gas turbine, comprising a gas source device, a recuperator device, a test section device, an exhaust device and a control valve, wherein:
the test section equipment comprises an air inlet and an air outlet; the heat regeneration equipment comprises an air inlet communicated with the air source equipment, an air outlet communicated with the air inlet of the test section equipment, a smoke inlet communicated with the air outlet of the test section equipment and a smoke outlet communicated with the exhaust equipment; the air source equipment is communicated with the exhaust equipment;
the control valve comprises a first valve port communicated with the air source equipment, a second valve port communicated with an air inlet of the regenerative equipment and a third valve port communicated with an air inlet of the test section equipment; the control valve is provided with a first working state and a second working state, when the control valve is in the first working state, the first valve port is communicated with the second valve port, and the third valve port is closed; when the control valve is in the second working state, the first valve port is communicated with the third valve port, and the second valve port is closed.
2. The combustion test stand of claim 1, wherein the control valve comprises a solenoid valve, a pneumatic valve, or an electrically operated valve.
3. The burn-in bench of claim 1 further comprising a cooling device disposed in the line between the flue gas inlet of the regenerative device and the exhaust port of the test section device, the cooling device for cooling the flue gas exiting the exhaust port of the test section device.
4. A combustion test stand according to claim 3, wherein the cooling apparatus comprises a heat exchanger and a cooling water circulation apparatus, the cooling water circulation apparatus having an inlet and an outlet, the heat exchanger having a high temperature gas inlet in communication with the exhaust of the test section apparatus, a high temperature gas outlet in communication with the flue gas inlet of the recuperation apparatus, a cooling water inlet in communication with the outlet of the cooling water circulation apparatus, and a cooling water outlet in communication with the inlet of the cooling water circulation apparatus.
5. The burn bench of claim 4 further comprising:
the first temperature detection device is arranged at the air inlet of the test section device and is used for detecting the temperature of air at the air inlet;
the control device is respectively connected with the control valve and the first temperature detection device and is used for acquiring the temperature value of the air at the air inlet detected by the first temperature detection device; when the air temperature value detected by the first temperature detection equipment is lower than a set first temperature threshold value, a first valve port and a second valve port of the control valve are controlled to be communicated, and a third valve port of the control valve is closed; and when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, controlling the first valve port of the control valve to be communicated with the third valve port, and closing the second valve port of the control valve.
6. The combustion test stand of claim 5, further comprising a first flow meter and a first flow valve disposed on a line between the air source device and the regeneration device and respectively connected to the control device;
the control device is further used for controlling the opening degree of the first flow valve to be reduced when the air flow value detected by the first flow meter is larger than a set first flow threshold value; and controlling the opening degree of the first flow valve to be increased when the air flow value detected by the first flow meter is smaller than a set second flow threshold value.
7. The combustion test stand of claim 5, further comprising a pressure gauge disposed at an air inlet of the test section apparatus for detecting a pressure of air at the air inlet, and a second flow valve disposed on a line between the exhaust apparatus and a flue gas outlet of the regeneration apparatus and connected to the control apparatus;
the control device is further used for controlling the opening degree of the second flow valve to be reduced when the air pressure value detected by the pressure gauge is larger than a set air pressure threshold value; and controlling the opening degree of the second flow valve to be increased when the air pressure value detected by the pressure gauge is smaller than a set air pressure threshold value.
8. The combustion test stand according to claim 5, further comprising a second temperature detection device provided at a flue gas inlet of the regenerative device, the second temperature detection device being configured to detect a temperature of flue gas at the flue gas inlet, the cooling device further comprising a third flow valve provided on a line between a cooling water inlet of the heat exchanger and an outlet of the cooling water circulation device and connected to the control device;
the control device is further used for controlling the opening degree of the third flow valve to be reduced when the temperature value of the flue gas at the flue gas inlet detected by the second temperature detection device is lower than a set third temperature threshold value; and when the temperature value of the flue gas at the flue gas inlet detected by the second temperature detection equipment is higher than a set fourth temperature threshold value, controlling the opening of the third flow valve to be increased.
9. A combustion test control method applied to the combustion test stand according to claim 5, comprising:
acquiring a temperature value of air at the air inlet detected by the first temperature detection equipment;
when the air temperature value detected by the first temperature detection equipment is lower than a set first temperature threshold value, a first valve port and a second valve port of the control valve are controlled to be communicated, and a third valve port of the control valve is closed;
when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, a first valve port of the control valve is controlled to be communicated with a third valve port, and a second valve port of the control valve is closed.
10. The combustion test control method according to claim 9, wherein when the combustion test stand further includes a first flow meter and a first flow valve provided on a line between the air source device and the heat recovery device and connected to the control device, respectively, the control method further comprises:
acquiring a flow value of air on a pipeline between the air source equipment and the heat recovery equipment, which is detected by the first flowmeter;
controlling the opening degree of the first flow valve to be reduced when the air flow value detected by the first flow meter is larger than a set first flow threshold value;
and controlling the opening degree of the first flow valve to be increased when the air flow value detected by the first flow meter is smaller than a set second flow threshold value.
11. The combustion test control method according to claim 9, wherein when the combustion test stand further includes a pressure gauge provided at an air inlet of the test section device for detecting a pressure of air at the air inlet, and a second flow valve provided on a pipe line between the exhaust device and a flue gas outlet of the regenerative device and connected to the control device, the control method further comprises:
acquiring a pressure value of air at an air inlet of the test section equipment detected by the pressure gauge;
when the air pressure value detected by the pressure gauge is larger than a set air pressure threshold value, controlling the opening degree of the second flow valve to be reduced;
and when the air pressure value detected by the pressure gauge is smaller than the set air pressure threshold value, controlling the opening degree of the second flow valve to be increased.
12. The combustion test control method according to claim 9, wherein when the combustion test stand further includes a second temperature detection device provided at a flue gas inlet of the heat regenerating device, and the cooling device further includes a third flow valve provided on a pipe line between a cooling water inlet of the heat exchanger and an outlet of the cooling water circulation device and connected to the control device, the control method further includes:
acquiring a temperature value of the flue gas at the flue gas inlet detected by the second temperature detection equipment;
when the smoke temperature value detected by the second temperature detection equipment is lower than a set third temperature threshold value, controlling the opening of the third flow valve to be reduced;
and when the smoke temperature detected by the second temperature detection equipment is higher than a set fourth temperature threshold value, controlling the opening degree of the third flow valve to be increased.
13. A combustion test control apparatus applied to the combustion test stand according to claim 6, comprising:
a first acquisition unit configured to acquire a temperature value of air at the air inlet detected by the first temperature detection device;
a first control unit, configured to control, when the air temperature value detected by the first temperature detecting device is lower than a set first temperature threshold value, the first valve port and the second valve port of the control valve to be communicated, and to close a third valve port of the control valve; when the air temperature value detected by the first temperature detection device is higher than a set second temperature threshold value, a first valve port of the control valve is controlled to be communicated with a third valve port, and a second valve port of the control valve is closed.
14. The combustion test control apparatus of claim 13, wherein when the combustion test stand further includes a first flow meter and a first flow valve disposed on a line between the air source device and the heat recovery device and respectively connected to the control device, the combustion test control apparatus further comprises:
the second acquisition unit is used for acquiring the flow value of the air on the pipeline between the air source equipment and the regenerative equipment, which are detected by the first flowmeter;
a second control unit configured to control the opening degree of the first flow valve to decrease when the air flow value detected by the first flow meter is greater than a set first flow threshold value; and controlling the opening degree of the first flow valve to be increased when the air flow value detected by the first flow meter is smaller than a set second flow threshold value.
15. The combustion test control apparatus of claim 13, further comprising, when further comprising a pressure gauge provided at an air inlet of the test section device for detecting a pressure of air at the air inlet, and a second flow valve provided on a line between the exhaust device and a flue gas outlet of the regenerative device and connected to the control device, the combustion test control apparatus further comprising:
the third acquisition unit is used for acquiring the pressure value of the air at the air inlet of the test section equipment, which is detected by the pressure gauge;
a third control unit for controlling the opening degree of the second flow valve to decrease when the air pressure value detected by the pressure gauge is greater than a set air pressure threshold value; and when the air pressure value detected by the pressure gauge is smaller than the set air pressure threshold value, controlling the opening degree of the second flow valve to be increased.
16. The combustion test control apparatus according to claim 13, wherein when the combustion test stand further includes a second temperature detecting device provided to the flue gas inlet of the heat regenerating device, and the cooling device further includes a third flow valve provided on a pipe line between the cooling water inlet of the heat exchanger and the outlet of the cooling water circulating device and connected to the control device, the combustion test control apparatus further includes:
a fourth obtaining unit, configured to obtain a temperature value of the flue gas at the flue gas inlet detected by the second temperature detecting device;
a fourth control unit for controlling the opening degree of the third flow valve to be reduced when the smoke temperature value detected by the second temperature detection device is lower than a set third temperature threshold value; and when the smoke temperature detected by the second temperature detection equipment is higher than a set fourth temperature threshold value, controlling the opening degree of the third flow valve to be increased.
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