CN-121676454-B - Performance test device and test method for steam centrifugal compressor

Abstract

The invention discloses a performance testing device and a performance testing method for a steam centrifugal compressor, and belongs to the technical field of compressors. The device comprises a main body testing system, wherein the main body testing system is connected with a heat engine and working condition adjusting system, an air suction dryness testing system and a spray cooling system, the main body testing system comprises an oil tank, the oil tank is connected with an oil cooler, the oil cooler is connected with a gear box, the gear box is connected with a variable frequency motor, the gear box is connected with a compressor unit, the compressor unit is respectively connected with the heat engine and working condition adjusting system, the air suction dryness testing system and the spray cooling system, the compressor unit comprises a plurality of compressors, and a flowmeter is connected to a pipeline of each compressor. The invention is used for carrying out online performance test on the single-stage or multi-stage steam centrifugal compressor, and the testing device heats and prepares steam by compressing air sucked by the air heat engine to generate motor power consumption without being provided with an additional steam generator.

Inventors

• YU JIAWEI
• WANG GENGHUI
• SHI BENLIN
• Xiu Siyuan
• TIAN YUCHANG
• XU SHUWU
• CHEN WENQING
• LIU CHANGFENG
• YANG YONGCAI
• HAN XIANJUN
• SUN ZHIHUI
• BAO YIFAN
• FENG YIBO

Assignees

• 冰轮环境技术股份有限公司
• 山东冰轮海卓氢能技术研究院有限公司

Dates

Publication Date

20260512

Application Date

20260206

Claims (8)

1. 1. The testing method of the performance testing device of the water vapor centrifugal compressor comprises a main body testing system (1), and is characterized in that the main body testing system (1) is connected with a heat engine and working condition adjusting system (2), an air suction dryness testing system (4) and a spraying cooling system (3); The main body test system (1) comprises an oil tank (11), the oil tank (11) is connected with an oil cooler (12), the oil cooler (12) is connected with a gear box (14), the gear box (14) is connected with a variable frequency motor (15), a compressor unit is connected to the gear box (14), and the compressor unit is respectively connected with a heat engine and working condition regulating system (2), an air suction dryness test system (4) and a spray cooling system (3); The spray cooling system (3) comprises an inlet gas-liquid separator (31), a multi-stage gas-liquid separator (32), a water pump (35) and a soft water tank (36), wherein the inlet gas-liquid separator (31) and the multi-stage gas-liquid separator (32) are respectively connected with the soft water tank (36), and the soft water tank (36) is connected with the water pump (35); the compressor unit comprises a plurality of compressors, and a flowmeter is connected to the pipeline of the compressors; the testing method comprises the following steps: Firstly, when a test starts, firstly, opening a valve at an air inlet (23) of a heat engine and working condition regulating system (2), closing a pressure discharge regulating valve (21), starting the heat engine and the working condition regulating system (2), automatically sucking air by a compressor to start compression, regulating a pressure suction regulating valve (22), and establishing a pressure difference between suction and discharge; step two, when the temperature of exhaust gas is raised to be more than 100 ℃, starting a spray cooling system (3), at the moment, starting to rapidly generate water vapor in the spray cooling system (3), then gradually closing a valve of an air inlet (23) of the heat engine, regulating a pressure discharge regulating valve (21) and a pressure suction regulating valve (22) of the heat engine and working condition regulating system (2) to ensure that the suction pressure is stabilized at the working condition to be tested, at the moment, monitoring the suction superheat degree, and calculating by pure water vapor; Step three, the superheat degree is increased to 0 from negative superheat degree, at the moment, the air in the spray cooling system (3) can be considered to be exhausted from the exhaust pressure regulating valve (21), at the moment, pure water vapor circulation is arranged in the spray cooling system (3), and the spray cooling system can be regulated to a working point to be tested for performance test; and fourthly, controlling the circulation quantity of water vapor in the spraying cooling system (3) through a pressure discharge regulating valve (21) of the heat engine and working condition regulating system (2), regulating the pressure difference of suction and exhaust through a pressure suction regulating valve (22) of the heat engine and working condition regulating system (2), and regulating the suction superheat degree through a water spray regulating valve of the spraying cooling system (3), thereby completing the performance test of the compressor.
2. 2. The method of claim 1, wherein in the fourth step, if the air intake quality is to be tested, an air intake quality test valve is opened, a small part of air intake steam is taken to enter an air intake quality test system (4), the input power of an electric heater (43) and the pressure and temperature states before and after heating are detected, and the steam flow of the air intake quality test system (4), and the steam quality in the pipeline is calculated by the law of conservation of energy.
3. 3. The test method of the performance test device of the water vapor centrifugal compressor of claim 1, wherein the air suction dryness test system (4) comprises an electric heater (43) and a plurality of pressure temperature measuring points, the electric heater (43) is arranged among the plurality of pressure temperature measuring points, and the plurality of pressure temperature measuring points are connected with the electric heater (43).
4. 4. The test method of the performance test device of the water vapor centrifugal compressor of claim 1, wherein the heat engine and working condition adjusting system (2) comprises a pressure discharge adjusting valve (21), a pressure suction adjusting valve (22) and a heat engine air inlet (23) which are sequentially connected.
5. 5. The test method of the performance test device of the water vapor centrifugal compressor of claim 4, wherein the water softening tank (36) is connected with a water softening device (37), an overflow valve (361) and a drain outlet (362), and the water softening device (37) is connected with a tap water inlet (38).
6. 6. The test method of the performance test device of the water vapor centrifugal compressor of claim 5, wherein cooling check valves (34) are arranged between the inlet gas-liquid separator (31) and the soft water tank (36) and between the multi-stage gas-liquid separator (32) and the soft water tank (36).
7. 7. The test method of the performance test device of the water vapor centrifugal compressor of claim 1, wherein the oil tank (11) is connected with an oil mist blower (111).
8. 8. The test method of the performance test device of the water vapor centrifugal compressor according to claim 1, wherein a filter (13) is arranged between the oil cooler (12) and the gear box (14).

Description

Performance test device and test method for steam centrifugal compressor Technical Field The invention relates to the technical field of compressors, in particular to a performance testing device and a performance testing method for a steam centrifugal compressor. Background The water vapor centrifugal compressor is used as one of key equipment for industrial energy recovery and application, and the performance test work of the core component compressor is particularly important. In practical application, the performance test device of the steam centrifugal compressor is difficult to accurately simulate various complex operation conditions, and the prior art lacks a professional test system which is strong in universality and stability and can accurately simulate various conditions. The related art refers to Chinese patent publication No. CN120083683B, which discloses a self-circulation running water vapor compressor performance test system and test method. In view of the above related art, the conventional performance testing device for the water vapor centrifugal compressor has the problems that the conventional performance testing device is generally required to be provided with a steam generating system such as a steam boiler or a steam heat pump, the performance testing device is complex and has high overall cost, and the conventional performance testing device has a limited testing range and is generally only used for testing a single-stage centrifugal compressor. Therefore, a new performance testing device for a water vapor centrifugal compressor is needed to solve the above technical problems. Disclosure of Invention The invention provides a performance testing device and a testing method for a steam centrifugal compressor, which are used for carrying out on-line performance test on a single-stage or multi-stage steam centrifugal compressor, aiming at the defects existing in the prior art, the testing device is used for testing the performance of the 1-4-level steam centrifugal compressor, and the testing device is used for heating and preparing steam through compressing air sucked by the air heat engine to generate motor power consumption, and an additional steam generator is not required to be arranged. The technical scheme for solving the technical problems is as follows: The performance testing device of the water vapor centrifugal compressor comprises a main body testing system, wherein the main body testing system is connected with a heat engine and working condition adjusting system, an air suction dryness testing system and a spray cooling system; The main body testing system comprises an oil tank, the oil tank is connected with an oil cooler, the oil cooler is connected with a gear box, the gear box is connected with a variable frequency motor, a compressor unit is connected to the gear box, and the compressor unit is respectively connected with a heat engine and working condition adjusting system, an air suction dryness testing system and a spray cooling system; The compressor unit comprises a plurality of compressors, and a flowmeter is connected to the pipeline of the compressors. Further, the air suction dryness testing system comprises an electric heater and a plurality of pressure and temperature measuring points, wherein the electric heater is arranged among the plurality of pressure and temperature measuring points, and the plurality of pressure and temperature measuring points are connected with the electric heater. Further, the heat engine and working condition adjusting system comprises a heat engine air inlet, a pressure discharging adjusting valve and a pressure absorbing adjusting valve which are sequentially connected. Further, the spray cooling system comprises an inlet gas-liquid separator, a multistage gas-liquid separator, a water pump and a soft water tank, wherein the inlet gas-liquid separator and the multistage gas-liquid separator are respectively connected with the soft water tank, and the soft water tank is connected with the water pump. Further, the water softening tank is connected with a water softening device, an overflow valve and a sewage outlet, and the water softening device is connected with a tap water inlet. Further, cooling check valves are arranged between the inlet gas-liquid separator and the soft water tank and between the multi-stage gas-liquid separator and the soft water tank. Further, an oil mist fan is connected to the oil tank. Further, a filter is arranged between the oil cooler and the gear box. A test method of a performance test device of a water vapor centrifugal compressor comprises the following steps: firstly, opening valves at air inlets of a heat engine and a heat engine of a working condition adjusting system at the beginning of testing, closing a pressure discharge adjusting valve, starting the heat engine and the working condition adjusting system, automatically sucking air by a compressor to start compression, adjusting the press