Turbo expander testing device and turbo expander testing system

Abstract

The invention discloses a turbo expander testing device and a turbo expander testing system. The turbo expander testing device comprises an expander, a first storage tank, a second storage tank, a gas conveying pipeline, an exhaust pipeline and a heat exchanger. The first storage tank is used for storing a first medium at a first preset temperature, the second storage tank is used for storing a second medium at a second preset temperature, and the first preset temperature is not equal to the second preset temperature; one end of the gas conveying pipeline communicates with the first storage tank and the second storage tank, the other end of the gas conveying pipeline communicates with the gas inlet end of the expansion machine, the first storage tank is used for conveying a first medium to the gas conveying pipeline according to a first preset flow, and the second storage tank is used for conveying a second medium to the gas conveying pipeline according to a second preset flow; the exhaust pipeline is communicated with the air outlet end of the expansion machine; the gas conveying pipeline and the exhaust pipeline both penetrate through the heat exchanger, and heat exchange is conducted between the gas conveying pipeline and the exhaust pipeline. According to the invention, the gas temperature can be adjusted without frequently replacing gas storage tanks with different temperatures.

Description

Technical Field

[0001] The present application relates to the field of turboexpander test devices, and particularly to a turboexpander test device. Background Art

[0002] In related technologies, to verify the operating performance of a turboexpander under different low-temperature conditions, a gas medium at different temperatures needs to be supplied to the expander, and a test device is used to record the operating state of the turboexpander. Most existing test devices use a low-temperature gas at a single temperature as the working medium. If the gas temperature needs to be changed to simulate different test conditions, different gas storage tanks at different temperatures need to be replaced, resulting in low test efficiency of the turboexpander. At the same time, during the test process of the turboexpander, the gas discharged from the turboexpander has a large amount of heat, and the gas discharged from the turboexpander is not utilized, causing energy waste. Summary of the Invention

[0003] In order to improve the test effect of the turboexpander and the energy utilization rate of the test device, the present application provides a turboexpander test device.

[0004] The present application further provides a turboexpander test system.

[0005] The turboexpander test device provided by the present application adopts the following technical solutions: A turboexpander test device includes: an expander; a first storage tank and a second storage tank, where the first storage tank is used to store a first medium at a first preset temperature, the second storage tank is used to store a second medium at a second preset temperature, and the first preset temperature is not equal to the second preset temperature.

[0006] A gas pipeline, one end of the gas pipeline is connected to both the first storage tank and the second storage tank, and the other end is connected to the intake end of the expander. The first storage tank is used to supply the first medium to the gas pipeline at a first preset flow rate, the second storage tank is used to supply the second medium to the gas pipeline at a second preset flow rate, and the first medium and the second medium are mixed in the gas pipeline.

[0007] An exhaust pipeline, the exhaust pipeline is connected to the outlet end of the expander.

[0008] A heat exchanger, both the gas pipeline and the exhaust pipeline pass through the heat exchanger, and the gas pipeline exchanges heat with the exhaust pipeline through the heat exchanger.

[0009] By adopting the above technical solution, the first storage tank conveys the first medium to the gas pipeline according to the first preset flow rate, and the second storage tank conveys the second medium to the gas pipeline according to the second preset flow rate. The first medium and the second medium are mixed in the gas pipeline, and the temperature of the gas medium in the gas pipeline is controlled by adjusting the first preset flow rate and the second preset flow rate, so as to convey gases at different temperatures to the expander. Compared with the prior art, the flexible adjustment of the gas temperature can be realized without frequently replacing the gas storage tanks at different temperatures, thereby improving the test efficiency of the turbine expander.

[0010] Preferably, the gas pipeline includes a first branch, a second branch and a mixing pipeline. The mixing pipeline is communicated with the air inlet end of the expander. The first branch is communicated between the mixing pipeline and the first storage tank. The first branch is provided with a first regulating valve for regulating the flow rate of the first medium. The second branch is communicated between the mixing pipeline and the second storage tank. The second branch is provided with a second regulating valve for regulating the flow rate of the second medium.

[0011] By adopting the above technical solution, when it is necessary to adjust the temperature of the gas medium in the mixing pipeline, the operator can adjust the opening degrees of the first regulating valve and the second regulating valve to adjust the proportion of the first medium and the second medium in the mixing pipeline, so as to adjust the temperature of the gas medium, and further meet the test requirements of the expander under different temperature conditions without replacing the gas storage tank.

[0012] Preferably, the turbine expander test device further includes: a cold dryer and a gas-liquid separator. The cold dryer and the gas-liquid separator are both arranged on the gas pipeline. Along the gas conveying direction of the gas pipeline, the cold dryer is located on the downstream side of the heat exchanger, and the gas-liquid separator is located on the downstream side of the cold dryer.

[0013] By adopting the above technical solution, the cold dryer condenses the water vapor in the gas medium in the gas pipeline to reduce the moisture content in the gas medium. When the water vapor in the gas medium is condensed, the gas-liquid separator separates and discharges the liquid water formed by condensation in the gas medium to further remove the residual moisture, so as to ensure that the gas medium entering the expander is in a dry state, avoid frosting or icing of the moisture in the gas medium in a low-temperature environment, and further improve the operation stability during the low-temperature test of the turbine expander.

[0014] Preferably, the turbine expander test device further includes: a filter. The filter is arranged on the gas pipeline. Along the gas conveying direction of the gas pipeline, the filter is located on the upstream side of the heat exchanger.

[0015] By adopting the above technical solution, the filter intercepts impurities in the gas medium, thereby preventing impurity particles from entering the expander and causing blockage or wear, and further improving the stability of the turboexpander test device during long-term operation and the service life of the core components.

[0016] Preferably, the turboexpander test device further includes: a first bypass, a first temperature detector, a first control valve, and a controller. The first temperature detector and the first control valve are both arranged on the gas pipeline. Along the gas transmission direction of the gas pipeline, the first temperature detector, the first control valve, and the heat exchanger are arranged in sequence. The first bypass is connected between the upstream side and the downstream side of the heat exchanger. The first bypass and the heat exchanger are independently arranged. The first bypass is connected to the first control valve. The first control valve is used to control the medium in the gas pipeline to flow into the first bypass or the heat exchanger. The first temperature detector is used to detect the temperature of the medium in the gas pipeline. Both the first control valve and the first temperature detector are communicatively connected to the controller. The controller is used to control the working state of the first control valve according to the detection signal of the first temperature detector.

[0017] By adopting the above technical solution, the controller receives the detection signal of the first temperature detector and compares the temperature of the gas medium in the gas pipeline with the preset temperature. When the temperature of the gas medium is equal to the preset temperature, the first control valve controls the gas medium to flow into the first bypass. When the temperature of the gas medium is lower than the preset temperature, the first control valve controls the gas medium to flow into the heat exchanger and the heat exchanger heats the gas medium, thereby adjusting the temperature of the gas medium in the gas pipeline, avoiding the too low temperature of the gas medium in the gas pipeline from affecting the normal operation of the expander, and further improving the automatic control ability of the turboexpander test device.

[0018] Preferably, the turboexpander test device further includes: a heater. The heater is arranged on the gas pipeline. Along the gas transmission direction of the gas pipeline, the heater is located on the downstream side of the heat exchanger.

[0019] By adopting the above technical solution, the heater further heats the gas medium in the gas pipeline, so that the temperature of the gas medium continues to rise after preliminary heat exchange by the heat exchanger, ensuring that the gas medium meets the test temperature requirements before entering the expander, thereby improving the temperature adaptation ability of the turboexpander test device.

[0020] Preferably, the turbine expander test device further includes: a second bypass, a second temperature detector, a second control valve, and a controller. The second temperature detector and the second control valve are both disposed on the gas pipeline. Along the gas transportation direction of the gas pipeline, the heat exchanger, the second temperature detector, the second control valve, and the heater are arranged in sequence. The second bypass is connected between the upstream side and the downstream side of the heater. The second bypass and the heater are independently arranged. The second bypass is connected to the second control valve. The second control valve is used to control the medium in the gas pipeline to flow into the second bypass or the heater. The second temperature detector is used to detect the temperature of the medium in the gas pipeline. Both the second control valve and the second temperature detector are communicatively connected to the controller. The controller is used to control the working state of the second control valve according to the detection signal of the second temperature detector.

[0021] By adopting the above technical solution, the controller receives the detection signal of the second temperature detector and compares the temperature of the gas medium in the gas pipeline with the preset temperature. When the temperature of the gas medium is equal to the preset temperature, the second control valve controls the gas medium to flow into the second bypass. When the temperature of the gas medium is lower than the preset temperature, the second control valve controls the gas medium to flow into the heater and the heater heats the gas medium, so as to adjust the temperature of the gas medium in the gas pipeline, avoid the too low temperature of the gas medium in the gas pipeline from affecting the normal operation of the expander, and further improve the automatic control ability of the turbine expander test device.

[0022] A turbine expander test system provided by the present application adopts the following technical solution: A turbine expander test system includes: a turbine expander test device, and the turbine expander test device is the above-mentioned turbine expander test device.

[0023] By adopting the above technical solution, the first storage tank transports the first medium to the gas pipeline according to the first preset flow rate, and the second storage tank transports the second medium to the gas pipeline according to the second preset flow rate. The first medium and the second medium are mixed in the gas pipeline. The temperature of the gas medium in the gas pipeline is controlled by adjusting the first preset flow rate and the second preset flow rate to transport gases with different temperatures to the expander. Compared with the prior art, the flexible adjustment of the gas temperature can be realized without frequently replacing the gas storage tanks with different temperatures, so as to improve the test efficiency of the turbine expander.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The first medium is delivered to the gas pipeline through the first storage tank at a first preset flow rate, and the second medium is delivered to the gas pipeline through the second storage tank at a second preset flow rate. The first medium and the second medium are mixed in the gas pipeline, and the temperature of the gas medium in the gas pipeline is controlled by adjusting the first preset flow rate and the second preset flow rate, so as to deliver gases at different temperatures to the expander. Compared with the prior art, the flexible adjustment of the gas temperature can be realized without frequently replacing storage tanks at different temperatures, thereby improving the test efficiency of the turbine expander; 2. The gas medium in the gas pipeline is further heated by a heater, so that the temperature of the gas medium continues to rise after preliminary heat exchange in the heat exchanger, ensuring that the gas medium meets the test temperature requirements before entering the expander, thereby improving the temperature adaptation ability of the turbine expander test device; 3. The controller receives the detection signal of the second temperature detection component and compares the temperature of the gas medium in the gas pipeline with the preset temperature. When the temperature of the gas medium is equal to the preset temperature, the second control valve controls the gas medium to flow into the second bypass. When the temperature of the gas medium is lower than the preset temperature, the second control valve controls the gas medium to flow into the heater and the heater heats the gas medium, thereby adjusting the temperature of the gas medium in the gas pipeline, avoiding the too low temperature of the gas medium in the gas pipeline from affecting the normal operation of the expander, and further improving the automatic control ability of the turbine expander test device. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the turbine expander test device according to an embodiment of the present application.

[0026] Description of the Reference Numerals: 100, turbine expander test device; 1, expander; 2, first storage tank; 3, second storage tank; 4, gas pipeline; 41, first branch; 411, first regulating valve; 42, second branch; 421, second regulating valve; 43, mixing pipeline; 5, exhaust pipeline; 6, heat exchanger; 7, cold dryer; 8, gas-liquid separator; 9, filter; 10, first bypass; 11, first temperature detection component; 12, first control valve; 13, heater; 14, second bypass; 15, second temperature detection component; 16, second control valve. Detailed Embodiment

[0027] The following is a further detailed description of the present application in conjunction with the attached Figure 1 drawings.

[0028] An embodiment of the present application discloses a turbine expander test device 100.

[0029] Reference Figure 1 Figure 1 According to the turbocompressor test device 100 described in the embodiments of the present application, it includes: a turbocompressor 1, a first storage tank 2, a second storage tank 3, a gas pipeline 4, an exhaust pipeline 5, and a heat exchanger 6.

[0030] The first storage tank 2 is used to store a first medium at a first preset temperature, and the second storage tank 3 is used to store a second medium at a second preset temperature, and the first preset temperature is not equal to the second preset temperature.

[0031] In some specific embodiments, the first medium may be liquid nitrogen, the second medium may be gaseous nitrogen, the first preset temperature is lower than the second preset temperature, and nitrogen is supplied to the turbocompressor 1 to test the turbocompressor 1.

[0032] One end of the gas pipeline 4 is connected to both the first storage tank 2 and the second storage tank 3, and the other end of the gas pipeline 4 is connected to the intake end of the turbocompressor 1. The first storage tank 2 is used to supply the first medium to the gas pipeline 4 at a first preset flow rate, and the second storage tank 3 is used to supply the second medium to the gas pipeline 4 at a second preset flow rate. The first medium and the second medium are mixed in the gas pipeline 4.

[0033] The exhaust pipeline 5 is connected to the outlet end of the turbocompressor 1. Both the gas pipeline 4 and the exhaust pipeline 5 pass through the heat exchanger 6, and the gas pipeline 4 exchanges heat with the exhaust pipeline 5 through the heat exchanger 6.

[0034] The first storage tank 2 supplies the first medium to the gas pipeline 4 at a first preset flow rate, and the second storage tank 3 supplies the second medium to the gas pipeline 4 at a second preset flow rate. The first medium and the second medium are mixed in the gas pipeline 4. The temperature of the gas medium in the gas pipeline 4 is jointly determined by the first preset flow rate and the second preset flow rate. That is to say, the temperature of the gas medium in the gas pipeline 4 is determined by the ratio of the first medium and the second medium in the gas medium in the gas pipeline 4. By controlling the first preset flow rate of the first medium supplied to the gas pipeline 4 and the second preset flow rate of the second medium supplied to the gas pipeline 4, the ratio of the first medium and the second medium in the gas medium in the gas pipeline 4 is controlled, so as to adjust the temperature of the gas medium in the gas pipeline 4 and supply gases at different temperatures to the turbocompressor 1.

[0035] Moreover, the gas in the gas pipeline 4 flows along the gas pipeline 4, and the gas in the gas pipeline 4 passes through the heat exchanger 6 to exchange heat with the gas in the exhaust pipeline 5. In the heat exchanger 6, the gas in the gas pipeline 4 is further preheated to reach the target test temperature, and then the gas in the gas pipeline 4 enters the intake end of the turbocompressor 1 to drive the turbocompressor 1 to operate, so as to simulate the operating state under different low-temperature working conditions.

[0036] In some specific embodiments, the ratio of the first medium to the second medium in the gas medium in the gas pipeline 4 can be 1:1.5.

[0037] In some other specific embodiments, the gas medium in the gas pipeline 4 can be only the first medium. That is to say, the first storage tank 2 conveys the first medium to the gas pipeline 4, and the second storage tank 3 does not convey the second medium to the gas pipeline 4.

[0038] In some other specific embodiments, the gas medium in the gas pipeline 4 can be only the second medium. That is to say, the first storage tank 2 does not convey the first medium to the gas pipeline 4, and the second storage tank 3 conveys the second medium to the gas pipeline 4.

[0039] Thus, by the first storage tank 2 conveying the first medium to the gas pipeline 4 according to the first preset flow rate, and by the second storage tank 3 conveying the second medium to the gas pipeline 4 according to the second preset flow rate, the first medium and the second medium are mixed in the gas pipeline 4, and the temperature of the gas medium in the gas pipeline 4 is controlled by adjusting the first preset flow rate and the second preset flow rate, so as to convey gases at different temperatures to the expander 1. Compared with the prior art, it is possible to flexibly adjust the gas temperature without frequently replacing gas storage tanks at different temperatures, thereby improving the test efficiency of the turbine expander 1.

[0040] Refer to Figure 1 , in some embodiments of the present application, the gas pipeline 4 includes a first branch 41, a second branch 42 and a mixing pipeline 43. The mixing pipeline 43 is communicated with the air inlet end of the expander 1. The first branch 41 is communicated between the mixing pipeline and the first storage tank 2, and the second branch 42 is communicated between the mixing pipeline and the second storage tank 3. Specifically, one end of the mixing pipeline 43 is communicated with the air inlet end of the expander 1, and the other end of the mixing pipeline 43 is communicated with both the first branch 41 and the second branch 42.

[0041] The first medium flows into the mixing pipeline 43 along the first branch 41, the second medium flows into the mixing pipeline 43 along the second branch 42, the first medium and the second medium are mixed in the mixing pipeline 43, and the gas in the mixing pipeline 43 flows into the expander 1.

[0042] Moreover, the first branch 41 is provided with a first regulating valve 411 for regulating the flow rate of the first medium, and the second branch 42 is provided with a second regulating valve 421 for regulating the flow rate of the second medium.

[0043] The first regulating valve 411 controls the first preset flow rate of the first medium conveyed from the first storage tank 2 to the mixing pipeline 43, and the second regulating valve 421 controls the second preset flow rate of the second medium conveyed from the second storage tank 3 to the mixing pipeline 43. By adjusting the opening degrees of the first regulating valve 411 and the second regulating valve 421, the ratio of the first medium and the second medium in the mixing pipeline 43 is changed, thereby adjusting the temperature of the gas medium in the mixing pipeline 43.

[0044] When it is necessary to adjust the temperature of the gas medium in the mixing pipeline 43, an operator can adjust the opening degrees of the first regulating valve 411 and the second regulating valve 421 to adjust the ratio of the first medium and the second medium in the mixing pipeline 43, thereby adjusting the temperature of the gas medium, and further meeting the test requirements of the expander 1 under different temperature conditions without replacing the gas storage tank.

[0045] In some specific embodiments, both the first regulating valve 411 and the second regulating valve 421 can be proportional solenoid valves.

[0046] Refer to Figure 1 In some embodiments of the present application, the turbine expander test device 100 may further include: a cold dryer 7 and a gas-liquid separator 8. Both the cold dryer 7 and the gas-liquid separator 8 are arranged on the gas transmission pipeline 4. Along the gas transmission direction of the gas transmission pipeline 4, the cold dryer 7 is located on the downstream side of the heat exchanger 6, and the gas-liquid separator 8 is located on the downstream side of the cold dryer 7. The cold dryer 7 is used to dry the gas medium in the gas transmission pipeline 4, and the gas-liquid separator 8 is used to separate the liquid in the gas medium in the gas transmission pipeline 4.

[0047] The gas medium in the gas transmission pipeline 4 sequentially passes through the cold dryer 7 and the gas-liquid separator 8 and then enters the expander 1. After the gas medium passes through the heat exchanger 6, it enters the cold dryer 7. The cold dryer 7 condenses the water vapor in the gas medium to reduce the moisture content in the gas medium. After the gas medium passes through the cold dryer 7, it enters the gas-liquid separator 8. The gas-liquid separator 8 separates and discharges the liquid water condensed in the gas medium, realizing further removal of the residual moisture in the gas medium to ensure that the gas medium is in a dry state.

[0048] The cold dryer 7 condenses the water vapor in the gas medium in the gas transmission pipeline 4 to reduce the moisture content in the gas medium. When the water vapor in the gas medium is condensed, the gas-liquid separator 8 separates and discharges the liquid water condensed in the gas medium to further remove the residual moisture, thereby ensuring that the gas medium entering the expander 1 is in a dry state, avoiding frosting or icing of the moisture in the gas medium in a low-temperature environment, and further improving the operation stability during the low-temperature test of the turbine expander 1.

[0049] Refer to Figure 1, in some embodiments of the present application, the turboexpander test device 100 may further include: a filter 9, which is disposed in the gas pipeline 4. Along the gas transmission direction of the gas pipeline 4, the filter 9 is located on the upstream side of the heat exchanger 6, and the filter 9 is used to filter impurities in the gas medium in the gas pipeline 4.

[0050] When the gas medium in the gas pipeline 4 flows into the filter 9, the filter 9 filters and intercepts solid particles, oil mist or other minute impurities in the gas medium to remove the impurities in the gas medium in the gas pipeline 4, so that the gas medium remains clean before entering the heat exchanger 6, the cold dryer 7, the gas-liquid separator 8 and the expander 1.

[0051] The filter 9 filters and intercepts impurities in the gas medium, thereby preventing impurity particles from entering the expander 1 and causing blockage or wear, and further improving the stability of the turboexpander test device 100 during long-term operation and the service life of the core components.

[0052] In some specific embodiments, the filter 9 may be a particle filter, an oil removal filter, etc.

[0053] Refer to Figure 1 , in some embodiments of the present application, the turboexpander test device 100 may further include: a first bypass 10, a first temperature detector 11, a first control valve 12 and a controller. Both the first temperature detector 11 and the first control valve 12 are disposed in the gas pipeline 4. Along the gas transmission direction of the gas pipeline 4, the first temperature detector 11, the first control valve 12 and the heat exchanger 6 are arranged in sequence. Specifically, the first temperature detector 11 is located on the upstream side of the first control valve 12, and the first control valve 12 is located on the upstream side of the heat exchanger 6.

[0054] Moreover, the first bypass 10 is connected between the upstream side and the downstream side of the heat exchanger 6. The first bypass 10 is independently arranged with respect to the heat exchanger 6. One end of the first bypass 10 close to the first storage tank 2 is connected to the first control valve 12, and the other end of the first bypass 10 away from the first storage tank 2 is connected to the gas pipeline 4, and the connection point of the first bypass 10 and the gas pipeline 4 is located on the downstream side of the heat exchanger 6.

[0055] The first control valve 12 is used to control the medium in the gas pipeline 4 to flow into the first bypass 10 or the heat exchanger 6. The first temperature detector 11 is used to detect the temperature of the medium in the gas pipeline 4. Both the first control valve 12 and the first temperature detector 11 are communicatively connected to the controller, and the controller is used to control the working state of the first control valve 12 according to the detection signal of the first temperature detector 11.

[0056] The controller receives the detection signal of the first temperature detector 11. The controller compares the temperature of the gas medium in the gas transmission pipeline 4 with the preset temperature. When the temperature of the gas medium in the gas transmission pipeline 4 is equal to the preset temperature, the controller controls the first control valve 12 to control the gas medium in the gas transmission pipeline 4 to flow into the first bypass 10, and the gas medium in the first bypass 10 flows into the gas transmission pipeline 4 to bypass the heat exchanger 6. When the temperature of the gas medium in the gas transmission pipeline 4 is lower than the preset temperature, the controller controls the first control valve 12 to control the gas medium in the gas transmission pipeline 4 to flow into the heat exchanger 6, and the heat exchanger 6 heats the gas medium in the gas transmission pipeline 4.

[0057] By the controller receiving the detection signal of the first temperature detector 11 and comparing the temperature of the gas medium in the gas transmission pipeline 4 with the preset temperature, when the temperature of the gas medium is equal to the preset temperature, the first control valve 12 controls the gas medium to flow into the first bypass 10. When the temperature of the gas medium is lower than the preset temperature, the first control valve 12 controls the gas medium to flow into the heat exchanger 6 and the heat exchanger 6 heats the gas medium, so that the temperature of the gas medium in the gas transmission pipeline 4 can be adjusted, and the normal operation of the expander 1 is prevented from being affected by too low temperature of the gas medium in the gas transmission pipeline 4. Furthermore, the automatic control ability of the turbine expander test device 100 can be improved.

[0058] In some specific embodiments, the first temperature detector 11 can be a thermocouple or an infrared temperature sensor, and the first control valve 12 can be a three-way solenoid valve.

[0059] Refer to Figure 1 , in some embodiments of the present application, the turbine expander test device 100 may further include: a heater 13, the heater 13 is arranged in the gas transmission pipeline 4, and along the gas transmission direction of the gas transmission pipeline 4, the heater 13 is located on the downstream side of the heat exchanger 6, and the heater 13 is used to heat the gas medium in the gas transmission pipeline 4.

[0060] After the gas medium in the gas transmission pipeline 4 passes through the heat exchange with the gas in the exhaust pipeline 5 in the heat exchanger 6, the gas medium in the gas transmission pipeline 4 continues to flow along the gas transmission pipeline 4 to the heater 13, and the heater 13 further heats the gas medium in the gas transmission pipeline 4 to increase the temperature of the gas medium, so that the temperature of the gas medium in the gas transmission pipeline 4 reaches the preset temperature, thereby ensuring that the gas medium can meet the test temperature requirements before entering the expander 1.

[0061] By the heater 13 further heating the gas medium in the gas transmission pipeline 4, so that the gas medium continues to increase in temperature after the preliminary heat exchange in the heat exchanger 6, it can ensure that the gas medium meets the test temperature requirements before entering the expander 1, thereby improving the temperature adaptation ability of the turbine expander test device 100.

[0062] In some specific embodiments, the heater 13 may be a resistance heater, a steam heater, or the like.

[0063] Referring to Figure 1 , in some embodiments of the present application, the turbine expander test device 100 may further include: a second bypass 14, a second temperature detector 15, a second control valve 16, and a controller. The second temperature detector 15 and the second control valve 16 are both provided in the gas pipeline 4. Along the gas transmission direction of the gas pipeline 4, the heat exchanger 6, the second temperature detector 15, the second control valve 16, and the heater 13 are arranged in sequence. Specifically, the second temperature detector 15 is located on the upstream side of the second control valve 16, and the second control valve 16 is located on the upstream side of the heater 13.

[0064] The second bypass 14 is communicated between the upstream side and the downstream side of the heater 13. The second bypass 14 and the heater 13 are independently arranged. One end of the second bypass 14 close to the first storage tank 2 is communicated with the second control valve 16, and the other end of the second bypass 14 far from the first storage tank 2 is communicated with the gas pipeline 4. And the connection point of the second bypass 14 and the gas pipeline 4 is located on the downstream side of the heater 13.

[0065] The second control valve 16 is used to control the medium in the gas pipeline 4 to flow into the second bypass 14 or the heater 13. The second temperature detector 15 is used to detect the temperature of the medium in the gas pipeline 4. The second control valve 16 and the second temperature detector 15 are both communicatively connected to the controller. The controller is used to control the working state of the second control valve 16 according to the detection signal of the second temperature detector 15.

[0066] The controller receives the detection signal of the second temperature detector 15. The controller compares the temperature of the gas medium in the gas pipeline 4 with a preset temperature. When the temperature of the gas medium in the gas pipeline 4 is equal to the preset temperature, the controller controls the second control valve 16 to control the gas medium in the gas pipeline 4 to flow into the second bypass 14. The gas medium in the second bypass 14 flows into the gas pipeline 4 to bypass the heater 13. When the temperature of the gas medium in the gas pipeline 4 is lower than the preset temperature, the controller controls the second control valve 16 to control the gas medium in the gas pipeline 4 to flow into the heater 13, and the heater 13 heats the gas medium in the gas pipeline 4.

[0067] The controller receives the detection signal of the second temperature detector 15 and compares the temperature of the gas medium in the gas transmission pipeline 4 with a preset temperature. When the temperature of the gas medium is equal to the preset temperature, the second control valve 16 controls the gas medium to flow into the second bypass 14. When the temperature of the gas medium is lower than the preset temperature, the second control valve 16 controls the gas medium to flow into the heater 13, and the heater 13 heats the gas medium, so as to adjust the temperature of the gas medium in the gas transmission pipeline 4, avoid the too low temperature of the gas medium in the gas transmission pipeline 4 from affecting the normal operation of the expander 1, and further improve the automatic control ability of the turbine expander test device 100.

[0068] In some specific embodiments, the second temperature detector 15 may be a thermocouple or an infrared temperature sensor, and the second control valve 16 may be a three-way solenoid valve.

[0069] Based on this, the present application further discloses a turbine expander test system. The turbine expander test system according to the embodiments of the present application includes: a turbine expander test device 100, and the turbine expander test device 100 is the turbine expander test device 100 in the above embodiments.

[0070] In the turbine expander test system according to the embodiments of the present application, the first storage tank 2 conveys the first medium to the gas transmission pipeline 4 according to a first preset flow rate, and the second storage tank 3 conveys the second medium to the gas transmission pipeline 4 according to a second preset flow rate. The first medium and the second medium are mixed in the gas transmission pipeline 4, and the temperature of the gas medium in the gas transmission pipeline 4 is controlled by adjusting the first preset flow rate and the second preset flow rate, so as to convey gases at different temperatures to the expander 1. Compared with the prior art, the flexible adjustment of the gas temperature can be realized without frequently replacing gas storage tanks at different temperatures, thereby improving the test efficiency of the expander 1.

[0071] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A turbine expander test device, characterized in that, Comprising: An expander (1); A first storage tank (2) and a second storage tank (3), the first storage tank (2) being used for storing a first medium at a first preset temperature, the second storage tank (3) being used for storing a second medium at a second preset temperature, the first preset temperature being different from the second preset temperature; A gas transmission pipeline (4), one end of the gas transmission pipeline (4) being communicated with both the first storage tank (2) and the second storage tank (3), and the other end being communicated with the air inlet end of the expander (1), the first storage tank (2) being used for conveying the first medium to the gas transmission pipeline (4) at a first preset flow rate, the second storage tank (3) being used for conveying the second medium to the gas transmission pipeline (4) at a second preset flow rate, the first medium and the second medium being mixed in the gas transmission pipeline (4); An exhaust pipeline (5), the exhaust pipeline (5) being communicated with the air outlet end of the expander (1); A heat exchanger (6), both the gas transmission pipeline (4) and the exhaust pipeline (5) passing through the heat exchanger (6), and the gas transmission pipeline (4) exchanging heat with the exhaust pipeline (5) through the heat exchanger (6).

2. The turbine expander testing device according to claim 1, wherein, The gas transmission pipeline (4) includes a first branch (41), a second branch (42) and a mixing pipeline (43), the mixing pipeline (43) being communicated with the air inlet end of the expander (1), the first branch (41) being communicated between the mixing pipeline and the first storage tank (2), the first branch (41) being provided with a first regulating valve (411) for regulating the flow rate of the first medium, the second branch (42) being communicated between the mixing pipeline and the second storage tank (3), the second branch (42) being provided with a second regulating valve (421) for regulating the flow rate of the second medium.

3. The turbine expander test device according to claim 1, characterized in that, Further comprising: A cold dryer (7) and a gas-liquid separator (8), both the cold dryer (7) and the gas-liquid separator (8) being arranged on the gas transmission pipeline (4), in the gas transmission direction of the gas transmission pipeline (4), the cold dryer (7) being located on the downstream side of the heat exchanger (6), and the gas-liquid separator (8) being located on the downstream side of the cold dryer (7).

4. A turbine expander test device according to claim 1, characterized in that, Further comprising: A filter (9), the filter (9) being arranged on the gas transmission pipeline (4), in the gas transmission direction of the gas transmission pipeline (4), the filter (9) being located on the upstream side of the heat exchanger (6).

5. A turbine expander test device according to claim 1, characterized in that, Further comprising: A first bypass (10), a first temperature detector (11), a first control valve (12) and a controller. The first temperature detector (11) and the first control valve (12) are both arranged on the gas transmission pipeline (4). Along the gas transmission direction of the gas transmission pipeline (4), the first temperature detector (11), the first control valve (12) and the heat exchanger (6) are arranged in sequence. The first bypass (10) is communicated between the upstream side and the downstream side of the heat exchanger (6). The first bypass (10) and the heat exchanger (6) are independently arranged with each other. The first bypass (10) is communicated with the first control valve (12). The first control valve (12) is used to control the medium in the gas transmission pipeline (4) to flow into the first bypass (10) or the heat exchanger (6). The first temperature detector (11) is used to detect the temperature of the medium in the gas transmission pipeline (4). Both the first control valve (12) and the first temperature detector (11) are communicatively connected to the controller. The controller is used to control the working state of the first control valve (12) according to the detection signal of the first temperature detector (11).

6. The turbine expander test device according to claim 1, characterized in that, Further comprising: A heater (13), the heater (13) is arranged on the gas transmission pipeline (4). Along the gas transmission direction of the gas transmission pipeline (4), the heater (13) is located on the downstream side of the heat exchanger (6).

7. The turbine expander test device according to claim 6, wherein, Further comprising: A second bypass (14), a second temperature detector (15), a second control valve (16) and a controller. The second temperature detector (15) and the second control valve (16) are both arranged on the gas transmission pipeline (4). Along the gas transmission direction of the gas transmission pipeline (4), the heat exchanger (6), the second temperature detector (15), the second control valve (16) and the heater (13) are arranged in sequence. The second bypass (14) is communicated between the upstream side and the downstream side of the heater (13). The second bypass (14) and the heater (13) are independently arranged with each other. The second bypass (14) is communicated with the second control valve (16). The second control valve (16) is used to control the medium in the gas transmission pipeline (4) to flow into the second bypass (14) or the heater (13). The second temperature detector (15) is used to detect the temperature of the medium in the gas transmission pipeline (4). Both the second control valve (16) and the second temperature detector (15) are communicatively connected to the controller. The controller is used to control the working state of the second control valve (16) according to the detection signal of the second temperature detector (15).

8. A turboexpander test system, characterized in that, Comprising: A turbine expander testing device (100), the turbine expander testing device (100) is the turbine expander testing device (100) according to any one of claims 1-7.

Images