CN101649831A - Performance testing device of carbon dioxide refrigeration compressor for refrigeration systems - Google Patents
Performance testing device of carbon dioxide refrigeration compressor for refrigeration systems Download PDFInfo
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- CN101649831A CN101649831A CN200910144796A CN200910144796A CN101649831A CN 101649831 A CN101649831 A CN 101649831A CN 200910144796 A CN200910144796 A CN 200910144796A CN 200910144796 A CN200910144796 A CN 200910144796A CN 101649831 A CN101649831 A CN 101649831A
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Abstract
The invention relates to a performance testing device of a carbon dioxide refrigeration compressor for trans-critical and sub-critical refrigeration systems. The prior art is improved in the way thata component for pressure regulation and pressure reduction is connected between a compressor exhaust opening and an exhaust flowmeter in parallel; a safety valve component A is arranged on an oil separator; a safety valve component B is arranged on a condenser; a safety valve component C is arranged on a liquid reservoir; a subcooler is connected between a shutoff valve C of an outlet of the liquid reservoir and an electromagnetic valve in series; a safety valve component D is arranged on the subcooler; a refrigerant filling and recovering storage tank is connected between an inlet of a mass flowmeter and an outlet of a shutoff valve E in parallel; a recovering shutoff valve and a recovering electromagnetic valve are arranged at the position of an inlet of the refrigerant filling and recovering storage tank, a filling shutoff valve and a filling electromagnetic valve are arranged at the position of an outlet of the refrigerant filling and recovering storage tank, and a safety valve component E is arranged on the refrigerant filling and recovering storage tank; and a safety valve component F is arranged on a gas cooler. In the invention, most of parts can adopt products of the conventional pressure resisting grade, thereby solving the problem of higher pressure of the whole system, reducing the cost and improving the safety of the system.
Description
Technical field
The present invention relates to performance testing device of carbon dioxide refrigeration compressor, specifically stride critical and subcritical performance testing device of carbon dioxide refrigeration compressor for refrigeration systems.
Background technique
In recent years, carbon dioxide more and more is widely used with its pollution-free efficient advantages of higher as a kind of natural refrigeration agent.In carbon dioxide refrigeration equipment, and carbon dioxide refrigeration compressor (hereinafter to be referred as: carbon-dioxide gas compressor) be one of the parts of most critical again.Compressor is a kind of machine by factory-assembled, and under various situations such as different operating conditionss, different contraction principle, discharge capacity, the refrigerating capacity of compressor is also significantly different.A structure in the compressor, the design of a part is changed, and all will have influence on the final refrigerating capacity of machine.Therefore, construction carbon-dioxide gas compressor performance test apparatus (hereinafter to be referred as: compressor test unit), carry out the carbon-dioxide gas compressor testing property, measure carbon-dioxide gas compressor refrigerating capacity, Energy Efficiency Ratio, will extremely important meaning all be arranged the research of carbon-dioxide gas compressor and the manufacturing and technological progress.
Usually adopted the method test compression machine performance of GB GB/T 5773 regulations in the past; With the master is the gas cooler method, and auxilliary side is an example for the exhaust flow-meter method, and in this traditional experiment process, the overcooled liquid of a refrigeration agent exhaust and a part mixes in gas cooler, and heat offsets, and forms overheated low-pressure gas.
At present carbon dioxide is considered to be applicable to that as refrigeration agent evaporating temperature is in-40～10 ℃ the various conventional refrigeration system, because suitable low of the critical point temperature of carbon dioxide coolant, use its heat of condensation if use carbon dioxide to compress as the refrigeration agent refrigerant, then its heat extraction temperature will the postcritical temperature, the critical-point pressure of carbon dioxide is also quite high, therefore the heat release of carbon dioxide refrigeration circuit is to carry out at supercritical region, the evaporation heat absorption is to carry out among close-to-critical range, and medium circulation belongs to strides critical cycle.If carbon dioxide coolant uses under low condensing temperature, during its condensing temperature subcritical point temperature, heat release of carbon dioxide refrigeration circuit and evaporation heat absorption all are to carry out among close-to-critical range, and medium circulation belongs to subcritical cycle.
Show that from the development data of carbon-dioxide gas compressor model machine the suction pressure of its compressor has reached 2～5MPa, and its outlet pressure is 5～10 times of traditional working medium working pressure up to 7～15MPa.Carbon dioxide is separate variable between its pressure and temperature when the supercritical pressure district.As working medium, these characteristics of carbon dioxide are that the research of carbon-dioxide gas compressor and carbon freezing, air-conditioning and heat pump has increased huge difficulty.
In view of the above-mentioned special applicable cases of machine, performance testing device of carbon dioxide refrigeration compressor must satisfy strides the test of critical and subcritical refrigeration system with carbon-dioxide gas compressor.It is higher that carbon-dioxide gas compressor is striden the operating mode system operating pressure of critical cycle, and its high pressure often reaches about 15MPa, even higher.If so according to original old process, containers such as the oil separator in the system, condenser, liquid-storage container, gas cooler, parts such as ball valve, filter, solenoid valve, modulating valve all will adopt the high pressure resistant product of energy.This needs each parts under high pressure to possess reliable performance, and the price of this base part also can increase.Be modulating valve and flowmeter in addition, under fixing degree of regulation and measuring accuracy, working pressure is high more, and the price of this series products is also just high more.The problem that also exists is in addition, and safety valve is adopted in the protection of various pressurized containers in traditional flow process, and when pressure was higher than certain setting pressure, safety valve can be opened automatically, released the working medium in the container, and reduced pressure rapidly, played the effect of protection.
For carbon dioxide refrigerating system, system is overcritical or the vapour-liquid two phase region with the preceding fluid state of the valve of safety valve, the pressure of carbon dioxide is higher than the discharging back pressure------atmospheric pressure, so carbon dioxide may be iced stifled phenomenon in the discharge process, because temperature is very low, normally block safety valve in the extremely short time, build-up of pressure discharges nowhere, makes tankage that the danger of superpressure blast be arranged.The traditional testing process of the problems referred to above explanation is not suitable for the test of carbon-dioxide gas compressor.
Summary of the invention
In order to solve high problem of each parts of performance testing device of carbon dioxide refrigeration compressor and equipment work pressure and the higher problem of whole system pressure, the invention provides a kind of critical and subcritical performance testing device of carbon dioxide refrigeration compressor for refrigeration systems of striding.
Concrete technical solution is as follows:
Performance testing device of carbon dioxide refrigeration compressor for refrigeration systems comprises oil separator 7, condenser 11, liquid-storage container 15, subcooler 18 and the gas cooler 30 of series connection; Oil separator 7 entrance points are provided with exhaust flow-meter 4; Pipeline between oil separator 7 outlets and condenser 11 imports is provided with stop valve A10; Pipeline between condenser 11 outlets and liquid-storage container 15 imports is provided with stop valve B13; Pipeline between liquid-storage container 15 outlets and subcooler 18 imports is provided with shutoff valve C (16), is provided with solenoid valve 19, stop valve D21, mass flowmenter 25, liquid pipe throttle valve 26 and stop valve E27 successively on the pipeline between subcooler 18 outlets and gas cooler 30 imports; Gas cooler 30 export pipelines are provided with stop valve F32 and stop valve G33; Be provided with tested compressor air inlet port and exhaust port between stop valve G33 outlet and exhaust flow-meter 4 imports, heating pipe flowmeter 8 in parallel successively, hot gas modulating valve 5 and stop valve H2 between the 3rd interface of the outlet of oil separator 7 and gas cooler 30.
The pressure regulation pressure relief assembly 3 that is provided with Electric Actuated Stop Valves and automatic decompression valve composition in parallel between described exhaust outlet of compressor and the exhaust flow-meter 4;
Described oil separator 7 is provided with relief valve assembly A6;
Described condenser 11 is provided with relief valve assembly B12;
Described liquid-storage container 15 is provided with relief valve assembly C14;
Described subcooler 18 is provided with relief valve assembly D17;
In parallel refrigerant charging and recovery holding vessel 9 between described mass flowmenter 25 imports and the stop valve E27 outlet, refrigerant charging and recovery holding vessel 9 inlets are provided with and reclaim stop valve 22 and reclaim solenoid valve 24, its outlet port is provided with and fills stop valve 28 and filled solenoid valve 29, also is provided with relief valve assembly E20 on it;
Described gas cooler 30 is provided with relief valve assembly F31;
Described relief valve assembly A6, relief valve assembly B12, relief valve assembly C14, relief valve assembly D17, relief valve assembly E20 and relief valve assembly F31 are safety valve and electric ball valve and the thermal switch that is set up in parallel simultaneously.
Liquid-sighting glass 23 in parallel between the outlet of described stop valve D21 and the inlet that reclaims solenoid valve 24.
Useful technique effect of the present invention embodies in the following areas:
1, most of parts of testing apparatus of the present invention can adopt the product of conventional voltage withstand class, greatly reduce the cost of testing apparatus, have improved the active safety of system;
2, solve the higher problem of whole system pressure, made things convenient for the monitoring pressure and the regular maintenance of device, the Security that has improved system.
3, the present invention is provided with unique safety installations system on each container, when guaranteeing the pressure superelevation, and pressure release smoothly, and do not ice stifled phenomenon, improved the passive safety of system.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done to describe further by embodiment.
Referring to Fig. 1, performance testing device of carbon dioxide refrigeration compressor for refrigeration systems comprises oil separator 7, condenser 11, liquid-storage container 15, subcooler 18 and the gas cooler 30 of series connection; Oil separator 7 entrance points are equipped with exhaust flow-meter 4; On the pipeline between oil separator 7 outlets and condenser 11 imports stop valve A10 is installed; On the pipeline between condenser 11 outlets and liquid-storage container 15 imports stop valve B13 is installed; Pipeline between liquid-storage container 15 outlets and subcooler 18 imports is provided with shutoff valve C 16, on the pipeline between subcooler 18 outlets and gas cooler 30 imports solenoid valve 19, stop valve D21, mass flowmenter 25, liquid pipe throttle valve 26 and stop valve E27 is installed successively; Stop valve F32 and stop valve G33 are installed on gas cooler 30 export pipelines; Stop valve G33 outlet and exhaust flow-meter 4 imports are respectively the suction port and the exhaust port of tested compressor 1, heating pipe flowmeter 8 in parallel successively, hot gas modulating valve 5 and stop valve H2 between the 3rd interface of the outlet of oil separator 7 and gas cooler 30.
Be installed in parallel the pressure regulation pressure relief assembly of forming by Electric Actuated Stop Valves and automatic decompression valve 3 between exhaust outlet of compressor and the exhaust flow-meter 4; Oil separator 7 is provided with relief valve assembly A6; Condenser 11 is provided with relief valve assembly B12; Liquid-storage container 15 is provided with relief valve assembly C14; Described subcooler 18 is provided with relief valve assembly D17; In parallel refrigerant charging and recovery holding vessel 9 between mass flowmenter 25 imports and the stop valve E27 outlet, refrigerant charging and recovery holding vessel 9 inlets are provided with and reclaim stop valve 22 and reclaim solenoid valve 24, its outlet port is provided with and fills stop valve A28 and filled solenoid valve B29, also is provided with relief valve assembly E20 on it; Gas cooler 30 is provided with relief valve assembly F31.
Liquid-sighting glass 23 in parallel between the outlet of stop valve D21 and the inlet that reclaims solenoid valve 24.
Above-mentioned relief valve assembly A6, relief valve assembly B12, relief valve assembly C14, relief valve assembly D17, relief valve assembly E20 and relief valve assembly F31 are safety valve and electric ball valve and the thermal switch that is set up in parallel simultaneously.
The basic circulation of apparatus of the present invention test is: the gas stream that carbon-dioxide gas compressor is discharged is through exhaust flow-meter, enter oil separator then, oil separator comes out to be divided into two-part, the refrigeration agent of a part enters condenser flow through liquid-storage container and subcooler again, after the modulating valve throttling, enter gas cooler, another part directly enters gas cooler through the hot gas modulating valve, and two-part refrigeration agent is mixed into the gas of low pressure in gas cooler, enters the compressor air suction mouth then.
The groundwork characteristics are as follows:
Between exhaust outlet of compressor and exhaust flow-meter 4, be provided with the pressure regulation pressure relief assembly 3 that Electric Actuated Stop Valves and automatic decompression valve are formed; When the exhaust pressure of being determined by the test operating mode when compressor was no more than 4.2MPa (or module back part can bear working pressure), Electric Actuated Stop Valves was opened, in each system unit after refrigeration agent directly enters.When the exhaust pressure of being determined by the test operating mode when compressor surpasses 4.2MPa (or module back part can bear working pressure), close Electric Actuated Stop Valves, open automatic decompression valve, automatically regulate pressure behind this assembly, make it in safety pressure (working pressure that 4.2MPa or module back part can bear);
At oil separator 7, condenser 11, liquid-storage container 15, subcooler 18, added safety valve and high-precision temperature switch security component on gas cooler 30 containers such as grade in conjunction with electric ball valve, action principle is: when the system pressure superelevation, when safety valve is opened, refrigerant carbon dioxide releases rapidly from safety valve, and may cause safety valve place temperature decrease, when temperature is reduced to high-precision temperature switch setting value, high-precision temperature switch temperature switch can be controlled electric ball valve and open automatically, because the circulation coefficient of ball valve is much larger than safety valve and shunted the refrigeration agent that needs superpressure to release in a large number, make the rapid pressure release of system of superpressure, guarantee safety;
Added refrigerant charging and the reclaiming system that comprises refrigerant charging and reclaim holding vessel 9 parts such as grade at refrigerant liquid pipeline place.When pilot system is used, can be according to how many increases and the minimizing refrigeration agent of refrigeration agent.In system-down time spent not; because the pressure of carbon dioxide when normal temperature still can reach 5.7～7.2MPa (during 20 ℃ of-30 ℃ of room temperatures); when so system temporarily stops using; can control refrigerant charging and reclaiming system with in income refrigerant charging of the refrigeration agent in the container of whole system and the recovery holding vessel 9; reduce the pressure of other container and parts; the high-pressure bottle scope is dwindled, be beneficial to monitoring and maintenance device.
Claims (2)
1, performance testing device of carbon dioxide refrigeration compressor for refrigeration systems comprises oil separator (7), condenser (11), liquid-storage container (15), subcooler (18) and the gas cooler (30) of series connection; Oil separator (7) entrance point is provided with exhaust flow-meter (4); Pipeline between oil separator (7) outlet and condenser (11) import is provided with stop valve A (10); Pipeline between condenser (11) outlet and liquid-storage container (15) import is provided with stop valve B (13); Pipeline between liquid-storage container (15) outlet and subcooler (18) import is provided with shutoff valve C (16), is provided with solenoid valve (19), stop valve D (21), mass flowmenter (25), liquid pipe throttle valve (26) and stop valve E (27) successively on the pipeline between subcooler (18) outlet and gas cooler (30) import; Gas cooler (30) export pipeline is provided with stop valve F (32) and stop valve G (33); Stop valve G (33) outlet and exhaust flow-meter (4) import are respectively the air inlet port and the exhaust port of tested compressor, heating pipe flowmeter in parallel successively (8), hot gas modulating valve (5) and stop valve H (2) between the 3rd interface of the outlet of oil separator (7) and gas cooler (30); It is characterized in that:
The pressure regulation pressure relief assembly (3) that is provided with Electric Actuated Stop Valves and automatic decompression valve composition in parallel between described exhaust outlet of compressor and the exhaust flow-meter (4);
Described oil separator (7) is provided with relief valve assembly A (6);
Described condenser (11) is provided with relief valve assembly B (12);
Described liquid-storage container (15) is provided with relief valve assembly C (14);
Described subcooler (18) is provided with relief valve assembly D (17);
In parallel refrigerant charging and recovery holding vessel (9) between described mass flowmenter (25) import and stop valve E (27) outlet, refrigerant charging and recovery holding vessel (9) inlet are provided with and reclaim stop valve (22) and reclaim solenoid valve (24), its outlet port is provided with and fills stop valve A (28) and filled solenoid valve B (29), also is provided with relief valve assembly E (20) on it;
Described gas cooler (30) is provided with relief valve assembly F (31);
Described relief valve assembly A (6), relief valve assembly B (12), relief valve assembly C (14), relief valve assembly D (17), relief valve assembly E (20) and relief valve assembly F (31) are safety valve and electric ball valve and the thermal switch that is set up in parallel simultaneously.
2, performance testing device of carbon dioxide refrigeration compressor for refrigeration systems according to claim 1 is characterized in that: liquid-sighting glass in parallel (23) between the outlet of described stop valve D (21) and the inlet that reclaims solenoid valve (24).
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| CN2009101447967A CN101649831B (en) | 2009-09-04 | 2009-09-04 | Performance testing device of carbon dioxide refrigeration compressor for refrigeration systems |
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| CN2009101447967A CN101649831B (en) | 2009-09-04 | 2009-09-04 | Performance testing device of carbon dioxide refrigeration compressor for refrigeration systems |
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| CN101915236A (en) * | 2010-08-26 | 2010-12-15 | 合肥通用机械研究院 | Carbon-dioxide gas compressor test device meeting cooler refrigerant side test requirement |
| CN102251957A (en) * | 2011-07-21 | 2011-11-23 | 上海交通大学 | On-line testing system for semi-closed screw rod type compressor and using method thereof |
| CN102338074A (en) * | 2010-07-23 | 2012-02-01 | 北京航天动力研究所 | Sealing type test device and method applicable to various types of oil pumps |
| CN102734149A (en) * | 2012-07-19 | 2012-10-17 | 浙江强盛压缩机制造有限公司 | Compressor performance testing system |
| CN102966524A (en) * | 2012-10-29 | 2013-03-13 | 合肥通用机械研究院 | Low-suction gas superheat performance testing device for refrigeration compressor |
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| CN111412135A (en) * | 2020-04-27 | 2020-07-14 | 上海佐竹冷热控制技术有限公司 | Carbon dioxide compressor testing device and testing method thereof |
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- 2009-09-04 CN CN2009101447967A patent/CN101649831B/en active Active
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| CN102338074B (en) * | 2010-07-23 | 2013-07-17 | 北京航天动力研究所 | Sealing type test device and method applicable to various types of oil pumps |
| CN101915236A (en) * | 2010-08-26 | 2010-12-15 | 合肥通用机械研究院 | Carbon-dioxide gas compressor test device meeting cooler refrigerant side test requirement |
| CN102251957B (en) * | 2011-07-21 | 2013-06-19 | 上海交通大学 | On-line testing system for semi-closed screw rod type compressor and using method thereof |
| CN102251957A (en) * | 2011-07-21 | 2011-11-23 | 上海交通大学 | On-line testing system for semi-closed screw rod type compressor and using method thereof |
| CN103487267B (en) * | 2012-06-11 | 2016-06-08 | 珠海格力电器股份有限公司 | Air conditioning system testing device |
| CN103487267A (en) * | 2012-06-11 | 2014-01-01 | 珠海格力电器股份有限公司 | Air conditioning system testing device |
| CN102734149B (en) * | 2012-07-19 | 2015-01-28 | 浙江强盛压缩机制造有限公司 | Compressor performance testing system |
| CN102734149A (en) * | 2012-07-19 | 2012-10-17 | 浙江强盛压缩机制造有限公司 | Compressor performance testing system |
| CN102966524A (en) * | 2012-10-29 | 2013-03-13 | 合肥通用机械研究院 | Low-suction gas superheat performance testing device for refrigeration compressor |
| CN102966524B (en) * | 2012-10-29 | 2015-04-29 | 合肥通用机械研究院 | Low-suction gas superheat performance testing device for refrigeration compressor |
| CN103062035B (en) * | 2012-12-19 | 2015-12-09 | 中国寰球工程公司 | A kind of test run system and method for cryogenic gas compressor |
| CN103062035A (en) * | 2012-12-19 | 2013-04-24 | 中国寰球工程公司 | Test run system and method of low temperature air compressor |
| CN106121993A (en) * | 2016-08-18 | 2016-11-16 | 江苏雪梅制冷设备有限公司 | CO2refrigeration compressor and the performance testing device of complete unit thereof |
| CN106121993B (en) * | 2016-08-18 | 2017-08-01 | 江苏雪梅制冷设备有限公司 | The performance testing device of CO2 refrigeration compressors and its complete unit |
| CN107131685B (en) * | 2017-05-27 | 2023-11-24 | 魏一伦 | Environment-friendly ice making all-in-one machine |
| CN107131685A (en) * | 2017-05-27 | 2017-09-05 | 魏伦 | A kind of environmentally friendly ice making all-in-one |
| CN108613304A (en) * | 2018-06-25 | 2018-10-02 | 西北工业大学 | A kind of temperature-adjusting device of compressed liquid refrigerant |
| CN109163917A (en) * | 2018-07-19 | 2019-01-08 | 西安交通大学 | A kind of Trans-critical cycle CO2Heat pump accelerated life test system and method |
| CN110454375A (en) * | 2019-07-08 | 2019-11-15 | 合肥通用机械研究院有限公司 | Use nitrogen as the system of refrigerant detection compressor effect |
| CN110793802A (en) * | 2019-11-28 | 2020-02-14 | 中国科学院工程热物理研究所 | Double-closed indirect cooling compressor experiment system |
| CN111412135A (en) * | 2020-04-27 | 2020-07-14 | 上海佐竹冷热控制技术有限公司 | Carbon dioxide compressor testing device and testing method thereof |
| CN113847963A (en) * | 2021-08-06 | 2021-12-28 | 合肥通用机械研究院有限公司 | Mass flow calculation method of performance testing device of refrigeration compressor |
| CN113847963B (en) * | 2021-08-06 | 2023-10-13 | 合肥通用机械研究院有限公司 | Mass flow calculation method of refrigeration compressor performance test device |
| CN114215734A (en) * | 2021-11-05 | 2022-03-22 | 合肥通用机械研究院有限公司 | Low-pressure working medium complete recovery system and recovery method for compressor testing device |
| CN114215734B (en) * | 2021-11-05 | 2024-03-19 | 合肥通用机械研究院有限公司 | Low-pressure working medium complete recovery system and recovery method for compressor testing device |
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Effective date of registration: 20140319 Address after: High tech Zone Hefei city Anhui province 230094 Xisi Road No. 9 (electromechanical Industrial Park) Patentee after: Hefei General Environment Control Technology Co., Ltd. Address before: 230031 Hefei Changjiang Road, Shushan District, Anhui, No. 888 Patentee before: Hefei Universal Machinery Inst. Patentee before: Hefei General Environment Control Technology Co., Ltd. |