Water vapor single-screw compressor testing system and water vapor cyclic utilization testing method

Abstract

The steam single-screw compressor testing system and the steam cyclic utilization testing method are characterized in that the system is composed of a steam pocket (5) and a liquid-gas separator (3), an electric heater (12) and an inverted-T-shaped steam distribution mixer (13) are installed in the steam pocket (5), the steam pocket (5) is communicated with a steam single-screw compressor (1) through a steam return pipeline (6), and the liquid-gas separator (3) is communicated with the steam single-screw compressor (1). The steam single-screw compressor (1) is communicated with a gas inlet of the liquid-gas separator (3) through a high-pressure steam outlet pipeline (2), high-pressure steam separated by the liquid-gas separator (3) is communicated with a gas inlet of the inverted-T-shaped steam distribution mixer (13) installed in the steam pocket through a low-pressure steam pipeline (4), and the bottom of the inverted-T-shaped steam distribution mixer (13) is located below the waterline of the steam pocket (5). And small holes are fully distributed, so that high-temperature steam and water in the steam pocket are uniformly mixed for heat transfer, and heat energy is recycled. The structure is simple, the compressor is started without electric heating, and energy and water resources are saved.

Description

Technical Field

[0001] The invention relates to a compressor performance testing technology, in particular to a single-screw compressor water vapor testing technology, specifically to a water vapor single-screw compressor testing system and a water vapor recycling testing method. Background Art

[0002] At present, there are a large number of waste steam in chemical, metallurgical, food, textile, energy and other industries. Single-screw compressors can be used to compress waste steam. Its characteristic is that the discharged steam is saturated steam. The finalization test and factory test of water vapor single-screw compressors both require water vapor testing. Since the air intake volume of water vapor single compressors is relatively large, they need to be equipped with large boilers. The steam discharged from the compressor cannot be used, resulting in a large amount of waste, which is contrary to the current concept of energy conservation and environmental protection. Summary of the invention

[0003] The purpose of the present invention is to design a water vapor single screw compressor testing system that can realize water vapor recycling and reduce steam waste in order to solve the problem of serious water vapor waste during the finalization and factory testing of existing water vapor single screw compressors, and at the same time provide a corresponding water vapor recycling test method.

[0004] One of the technical solutions of the present invention is: A steam single screw compressor test system, characterized in that: it is mainly composed of a steam drum 5 and a liquid-gas separator 3, an electric heater 12 and an inverted T-shaped steam distribution mixer 13 are installed in the steam drum 5, the steam drum 5 is connected to the low-pressure air inlet of the tested steam single screw compressor 1 through a steam return air pipeline 6, the high-pressure air outlet of the steam single screw compressor 1 is connected to the air inlet of the liquid-gas separator 3 through a high-pressure steam outlet pipeline 2, the high-pressure steam separated by the liquid-gas separator 3 is output from the upper part thereof and is decompressed by a regulating valve and then connected to the inverted T-shaped steam distribution mixer 1 installed in the steam drum through a low-pressure steam pipeline 4. 3, the bottom of the inverted T-shaped steam distributor mixer 13 is below the waterline of the drum 5 and is covered with small holes, so that the high-temperature steam and the water in the drum are evenly mixed for heat transfer and heat recovery; a water recovery pipeline 9 connecting the liquid-gas separator and the drum is provided at the lower part of the liquid-gas separator 3, which is used to recover the excess water in the liquid-gas separator 3 to the drum 5 through the pressure difference, thereby reducing the waste of deionized water and heat energy; the liquid-gas separator 3 also sprays water into the steam single-screw compressor 1 through the liquid injection pipeline 7 inserted into the water inside the liquid-gas separator 3; the upper part of the drum 5 is connected to the drum venting pipeline 11, and the lower part of the drum 5 is connected to the drum sewage pipeline 10.

[0005] The steam return pipeline 6 and the high-pressure steam outlet pipeline 2 are both equipped with a stop valve, a regulating valve, a steam meter, a temperature sensor and a pressure sensor; the low-pressure steam pipeline 4 is equipped with a stop valve and a regulating valve.

[0006] The steam drum 5 and the liquid-gas separator 3 are both connected to a deionized water supply pipeline 8, and a water supply pump, a one-way valve and a stop valve are installed on the deionized water supply pipeline 8.

[0007] The steam drum 5 is equipped with a pressure sensor and a temperature sensor.

[0008] The liquid spraying pipeline 7 is installed with a pressure sensor, a temperature sensor, a regulating valve, a liquid spraying flow meter and a stop valve.

[0009] The steam drum 5 and the liquid-gas separator 3 are both connected with a liquid level sensor and a safety valve.

[0010] The second technical solution of the present invention is: A water vapor recycling test method for a water vapor single screw compressor test system, characterized by: First, start the electric heater on drum 5 to increase the steam pressure in the drum to above 0.3MPa; Secondly, the stop valve and the regulating valve on the steam return pipeline 6 are opened to start the steam screw compressor 1. The high-pressure steam output by the steam screw compressor 1 enters the liquid-gas separator 3 through the high-pressure steam outlet pipeline 2; Third, the water in the liquid-gas separator 3 is sprayed into the steam single-screw compressor 1 through the liquid spraying pipeline 7 inserted below the water level line; Fourth, the high-pressure steam in the liquid-gas separator 3 is discharged from the top, and after being reduced in pressure by the regulating valve, it is discharged into the steam drum 5 through the low-pressure steam pipeline 4. An inverted T-shaped steam distribution mixing pipe is arranged inside the steam drum. The bottom of the inverted T-shaped steam distribution mixing pipe is below the waterline of the steam drum 5 and is covered with small holes. The high-temperature steam is evenly mixed with the water in the steam drum for heat transfer, and the heat energy is recovered; the vaporized water vapor is collected at the top of the steam drum 5 again, and after the flow rate and pressure are adjusted by the steam reflux pipeline, it enters the water vapor single-screw compressor 1 again for compression, so as to realize the steam recycling; Fifth, the pressure gradient in the system is: the exhaust port of the steam single screw compressor 1> the liquid-gas separator 3> the steam drum 5> the suction port of the steam single screw compressor 1; Sixth, a manual or automatic stop valve is provided on the steam return gas pipeline 6 connecting the gas outlet of the steam drum 5 and the gas inlet of the single-screw steam compressor 1 for opening and closing the pipeline; a regulating valve is used for pressure regulation; a flow meter is used for measuring the suction flow of the steam single-screw compressor 1; and temperature and pressure sensors are provided for steam state monitoring; Seventh, a high-pressure steam outlet pipeline 2 is used to connect the exhaust port of the steam single-screw compressor 1 and the air inlet of the liquid-gas separator 3. A manual or automatic stop valve is set on the pipeline, and a one-way valve is used to open and close the steam pipeline; a temperature and pressure sensor is set for steam status monitoring; Eighth, a low-pressure steam outlet pipeline 4 is used to connect the outlet of the liquid-gas separator 3 and the air inlet of the steam drum 5, and a manual or automatic stop valve is set on the pipeline to open and close the steam pipeline; a regulating valve is set to adjust the steam pressure; Ninth, the liquid outlet of the liquid-gas separator 3 is connected to the liquid outlet of the water vapor single screw compressor 1 by using the liquid injection pipeline 7, and a manual or automatic stop valve is set on the pipeline for opening and closing the pipeline; a regulating valve is set for regulating the liquid injection flow rate; and a temperature and pressure sensor is set for monitoring the liquid injection state; Tenth, a water recovery pipeline 9 is used to connect the drain port of the liquid-gas separator 3 and the liquid return port of the steam drum 5 to recover the excess water in the liquid-gas separator 3 to the steam drum 5 through the pressure difference, thereby reducing the waste of deionized water and heat energy; Eleventh, a safety valve is provided on the liquid-gas separator 3 for overpressure relief protection; a liquid level sensor is provided to discharge water when the liquid level is high, and to replenish liquid through the liquid-gas separator replenishment pipeline 8 when the liquid level is low; the inlet of the liquid-gas separator replenishment pipeline 8 is connected to deionized water, which is pressurized by a multi-stage centrifugal pump and flows into the liquid-gas separator 3 through a one-way valve and a manual or automatic stop valve; Twelfth, in addition to the electric heater and the steam distribution mixing pipe, the steam drum 5 is also provided with temperature, pressure and liquid level sensors for working state detection and protection; when overpressure occurs, the pressure is released through the vent of the steam drum vent pipeline 11 with an automatic valve; when the liquid level is high, the water is drained through the steam drum sewage pipeline 10 with an automatic valve; when the liquid level is low, the pressure is increased by a multi-stage centrifugal pump and then flows into the steam drum 5 through a one-way valve and a manual or automatic stop valve; the steam drum is also provided with a safety valve for overpressure protection during steam drum operation; Thirteenth, once the test system cycle is established, the electric heater 12 in the steam drum 5 does not need to be started. The system heat source is provided by the steam single-screw compressor 1 when it is working, the steam is circulated and the hot water is recycled in stages, which reduces the energy consumption of the test system to a minimum.

[0011] Beneficial effects of the present invention: The present invention realizes the recycling of water vapor and can greatly reduce the consumption of energy and deionized water. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the principle of the test recovery system of the present invention. In the figure: 14 is a pressure sensor, 15 is a temperature sensor, 16 is a steam flow meter, 17 is a regulating valve, 18 is a stop valve, 19 is a safety valve, 20 is a one-way valve, 21 is a liquid spray flow meter, 22 is a water supply pump, and 23 is a liquid level sensor. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] like Figure 1 shown.

[0015] A steam single screw compressor test system, which is mainly composed of a steam drum 5 and a liquid-gas separator 3, wherein an electric heater 12 and an inverted T-shaped steam distribution mixer 13 are installed in the steam drum 5, wherein the steam drum 5 is connected to a low-pressure air inlet of a steam single screw compressor 1 to be tested through a steam return air pipeline 6, wherein a high-pressure air outlet of the steam single screw compressor 1 is connected to an air inlet of the liquid-gas separator 3 through a high-pressure steam outlet pipeline 2, wherein the high-pressure steam separated by the liquid-gas separator 3 is output from its upper part and is decompressed by a regulating valve and then is connected to an inverted T-shaped steam distribution mixer 13 installed in the steam drum through a low-pressure steam pipeline 4. The bottom of the inverted T-shaped steam distributor mixer 13 is below the waterline of the drum 5 and is covered with small holes, which evenly mixes the high-temperature steam with the water in the drum for heat transfer and recovers the heat energy; the lower part of the liquid-gas separator 3 is provided with a water recovery pipeline 9 connecting the liquid-gas separator and the drum, which is used to recover the excess water in the liquid-gas separator 3 to the drum 5 through the pressure difference, reducing the waste of deionized water and heat energy; the liquid-gas separator 3 also sprays water into the steam single-screw compressor 1 through the liquid injection pipeline 7 inserted into the water inside it; the upper part of the drum 5 is connected to the drum venting pipeline 11, and the lower part of the drum 5 is connected to the drum sewage pipeline 10. The steam return pipeline 6 and the high-pressure steam outlet pipeline 2 are both equipped with a stop valve, a regulating valve, a steam meter, a temperature sensor and a pressure sensor; the low-pressure steam pipeline 4 is equipped with a stop valve and a regulating valve. The steam drum 5 and the gas-liquid separator 3 are both connected to a deionized water supply pipeline 8, on which a supply pump, a one-way valve and a stop valve are installed. The steam drum 5 is installed with a pressure sensor and a temperature sensor. The liquid injection pipeline 7 is installed with a pressure sensor, a temperature sensor, a regulating valve, a liquid injection flow meter and a stop valve. The steam drum 5 and the gas-liquid separator 3 are both connected to a liquid level sensor and a safety valve. Figure 1 The usage is as follows: 1. Start the electric heater on drum 5 to increase the steam pressure in the drum to above 0.3MPa; 2. Then open the stop valve and regulating valve on the steam return pipeline 6, start the steam screw compressor 1, and the high-pressure steam enters the liquid-gas separator 3 through the high-pressure steam outlet pipeline 2; 3. The water in the liquid-gas separator 3 is sprayed into the steam single screw compressor 1 through the liquid spraying pipeline 7 inserted below the water level line. 4. The high-pressure steam in the liquid-gas separator 3 is discharged from the top, and after being reduced in pressure by the regulating valve, it is discharged into the steam drum 5 through the low-pressure steam pipeline 4. A steam distribution mixing tube is arranged inside the steam drum. The mixing tube is arranged in an inverted T shape, with the bottom below the water line of the steam drum 5 and covered with small holes. The high-temperature steam is evenly mixed with the water in the steam drum for heat transfer and heat energy recovery.

[0016] 5. The vaporized water vapor is collected at the top of the steam drum 5, and after the flow rate and pressure are adjusted through the steam reflux pipeline, it enters the water vapor single screw compressor 1 again for compression, thereby realizing the steam recycling.

[0017] 6. The pressure gradient in the system is: exhaust port of steam single screw compressor 1 > liquid-gas separator 3 > steam drum 5 > suction port of steam single screw compressor 1; 7. The steam return pipeline 6 connects the air outlet of the steam drum 5 and the air inlet of the single-screw steam compressor 1. A manual or automatic stop valve is provided on the pipeline for opening and closing the pipeline; a regulating valve is used for pressure regulation; a flow meter is used for measuring the suction flow of the steam single-screw compressor 1; and temperature and pressure sensors are provided for steam status monitoring.

[0018] 8. The high-pressure steam outlet pipeline 2 connects the exhaust port of the steam single-screw compressor 1 and the air inlet of the liquid-gas separator 3. A manual or automatic stop valve is set on the pipeline, and a one-way valve is used to open and close the steam pipeline; temperature and pressure sensors are set for steam status monitoring.

[0019] 9. The low-pressure steam outlet pipeline 4 connects the outlet of the liquid-gas separator 3 and the inlet of the steam drum 5. A manual or automatic stop valve is provided on the pipeline for opening and closing the steam pipeline; a regulating valve is provided for steam pressure regulation.

[0020] 10. The liquid spray pipeline 7 connects the liquid outlet of the liquid-gas separator 3 and the liquid spray outlet of the steam single-screw compressor. A manual or automatic stop valve is set on the pipeline for opening and closing the pipeline; a regulating valve is set for regulating the liquid spray flow rate; and a temperature and pressure sensor is set for monitoring the liquid spray status.

[0021] 11. The water recovery pipeline 9 connects the sewage outlet of the liquid-gas separator 3 and the liquid return port of the steam drum 5, and is used to recover the excess water in the liquid-gas separator 3 to the steam drum 5 through the pressure difference, thereby reducing the waste of deionized water and heat energy.

[0022] 12. A safety valve is provided on the liquid-gas separator 3 for overpressure relief protection; a liquid level sensor is provided to discharge water when the liquid level is high, and to replenish liquid through the liquid-gas separator replenishment pipeline 8 when the liquid level is low; the inlet of the liquid-gas separator replenishment pipeline 8 is connected to deionized water, which is pressurized by a multi-stage centrifugal pump and flows into the liquid-gas separator 3 through a one-way valve and a manual or automatic stop valve. 13. In addition to the electric heater and the steam distribution mixing pipe, the steam drum 5 is also equipped with temperature, pressure and liquid level sensors for working status detection and protection. In case of overpressure, the pressure is released through the vent 11 with an automatic valve. When the liquid level is high, the water is discharged through the steam drum drain pipeline 10 with an automatic valve. When the liquid level is low, the liquid is pressurized by a multi-stage centrifugal pump and then flows into the steam drum 5 through a one-way valve and a manual or automatic stop valve. The steam drum is also equipped with a safety valve for overpressure protection during steam drum operation.

[0023] 14. Once the system cycle is established, the electric heater in the drum 5 does not need to be started. The system heat source is provided by the steam single-screw compressor 1 when it is working. The steam is circulated and the hot water is recycled in stages to minimize the energy consumption of the test system.

[0024] The parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.

Claims

1. A steam single screw compressor test system, characterized by: It mainly consists of a steam drum (5) and a liquid-gas separator (3). An electric heater (12) and an inverted T-shaped steam distributor mixer (13) are installed in the steam drum (5). The steam drum (5) is connected to the low-pressure air inlet of the tested steam single-screw compressor (1) through a steam return pipeline (6). The high-pressure air outlet of the steam single-screw compressor (1) is connected to the air inlet of the liquid-gas separator (3) through a high-pressure steam outlet pipeline (2). The high-pressure steam separated by the liquid-gas separator (3) is output from its upper part and is reduced in pressure by a regulating valve and then connected to the air inlet of the inverted T-shaped steam distributor mixer (13) installed in the steam drum through a low-pressure steam pipeline (4). The bottom of the steam distributor (13) is below the water line of the drum (5) and is covered with small holes, so that the high-temperature steam and the water in the drum are evenly mixed to transfer heat and recover heat energy; the lower part of the liquid-gas separator (3) is provided with a water recovery pipeline (9) connecting the liquid-gas separator and the drum, which is used to recover the excess water in the liquid-gas separator (3) into the drum (5) through a pressure difference, thereby reducing the waste of deionized water and heat energy; the liquid-gas separator (3) also sprays water into the steam single-screw compressor (1) through a liquid injection pipeline (7) inserted into the water inside the liquid-gas separator (3); the upper part of the drum (5) is connected to a drum venting pipeline (11), and the lower part of the drum (5) is connected to a drum sewage discharge pipeline (10).

2. The steam single screw compressor testing system according to claim 1, characterized in that: The steam return pipeline (6) and the high-pressure steam outlet pipeline (2) are both equipped with a stop valve, a regulating valve, a steam meter, a temperature sensor and a pressure sensor; the low-pressure steam pipeline (4) is equipped with a stop valve and a regulating valve.

3. The steam single screw compressor testing system according to claim 1, characterized in that: The steam drum (5) and the liquid-gas separator (3) are both connected to a deionized water supply pipeline (8), and a water supply pump, a one-way valve and a stop valve are installed on the deionized water supply pipeline (8).

4. The steam single screw compressor testing system according to claim 1, characterized in that: The steam drum (5) is equipped with a pressure sensor and a temperature sensor.

5. The steam single screw compressor testing system according to claim 1, characterized in that: The liquid spraying pipeline (7) is equipped with a pressure sensor, a temperature sensor, a regulating valve, a liquid spraying flow meter and a stop valve.

6. The steam single screw compressor testing system according to claim 1, characterized in that: The steam drum (5) and the liquid-gas separator (3) are both connected to a liquid level sensor and a safety valve.

7. A water vapor recycling test method for a water vapor single screw compressor test system according to claim 1, characterized in that: First, the electric heater on the steam drum (5) is started to increase the steam pressure in the steam drum to above 0.3 MPa; Secondly, the stop valve and the regulating valve on the steam return pipeline (6) are opened to start the steam screw compressor (1), and the high-pressure steam output by the steam screw compressor (1) enters the liquid-gas separator (3) through the high-pressure steam outlet pipeline (2); Third, the water in the liquid-gas separator (3) is sprayed into the steam single-screw compressor (1) through the liquid spray pipeline (7) inserted below the water level line; Fourth, the high-pressure steam in the liquid-gas separator (3) is discharged from the top, and after being reduced in pressure by the regulating valve, it is discharged into the steam drum (5) through the low-pressure steam pipeline (4). An inverted T-shaped steam distribution mixing pipe is arranged inside the steam drum. The bottom of the inverted T-shaped steam distribution mixing pipe is below the water line of the steam drum (5) and is covered with small holes. The high-temperature steam and the water in the steam drum are evenly mixed to transfer heat and recover heat energy. The vaporized water vapor is collected at the top of the steam drum (5) again, and after the flow rate and pressure are adjusted by the steam return pipeline, it enters the water vapor single screw compressor (1) again for compression, thereby realizing steam recycling. Fifth, the pressure gradient in the system is: the exhaust port of the steam single screw compressor (1) > the liquid-gas separator (3) > the steam drum (5) > the suction port of the steam single screw compressor (1); Sixth, a manual or automatic stop valve is provided on the steam return gas pipeline (6) connecting the gas outlet of the steam drum (5) and the gas inlet of the single-screw steam compressor (1) for opening and closing the pipeline; a regulating valve is used for pressure regulation; a flow meter is used for measuring the suction flow of the steam single-screw compressor (1); and temperature and pressure sensors are provided for monitoring the steam state; Seventh, a high-pressure steam outlet pipeline (2) is used to connect the exhaust port of the steam single-screw compressor (1) and the air inlet of the liquid-gas separator (3), a manual or automatic stop valve is provided on the pipeline, and a one-way valve is used to open and close the steam pipeline; a temperature and pressure sensor is provided to monitor the steam status; Eighth, a low-pressure steam outlet pipeline (4) is used to connect the outlet of the liquid-gas separator (3) and the inlet of the steam drum (5), and a manual or automatic stop valve is provided on the pipeline to open and close the steam pipeline; a regulating valve is provided to regulate the steam pressure; Ninth, a liquid injection pipeline (7) is used to connect the liquid outlet of the liquid-gas separator (3) and the liquid injection port of the water vapor single screw compressor (1), and a manual or automatic stop valve is provided on the pipeline to open and close the pipeline; a regulating valve is provided to adjust the liquid injection flow rate; and a temperature and pressure sensor is provided to monitor the liquid injection state; Tenth, a water recovery pipeline (9) is used to connect the drain port of the liquid-gas separator (3) and the return port of the steam (5) to recover the excess water in the liquid-gas separator (3) into the steam drum (5) through the pressure difference, thereby reducing the waste of deionized water and heat energy; Eleventh, a safety valve is provided on the liquid-gas separator (3) for overpressure relief protection; a liquid level sensor is provided to discharge water when the liquid level is high, and to replenish liquid through the liquid-gas separator replenishment pipeline (8) when the liquid level is low; the inlet of the liquid-gas separator replenishment pipeline (8) is connected to deionized water, which is pressurized by a multi-stage centrifugal pump and flows into the liquid-gas separator (3) through a one-way valve and a manual or automatic stop valve; Twelfth, in addition to the electric heater and the steam distribution mixing pipe, the steam drum (5) is also provided with temperature, pressure and liquid level sensors for working state detection and protection; when overpressure occurs, the pressure is released through the vent of the steam drum vent pipeline (11) provided with an automatic control valve; when the liquid level is high, the water is discharged through the steam drum sewage pipeline (10) provided with an automatic control valve; when the liquid level is low, the water is pressurized by a multi-stage centrifugal pump and then flows into the steam drum (5) through a one-way valve and a manual or automatic stop valve; the steam drum is also provided with a safety valve for overpressure protection during steam drum operation; Thirteenth, once the test system circulation is established, the electric heater (12) in the drum (5) does not need to be started. The system heat source is provided by the steam single-screw compressor (1) when it is working, the steam is circulated and the hot water is recycled in stages, so as to minimize the energy consumption of the test system.

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