A combined process for compressor performance testing and energy conservation and utilization

Abstract

The present invention discloses a combined process of compressor performance detection and energy conservation and utilization, including: a compressor, a condenser, an evaporator, a liquid storage device, an energy use station, a heat exchanger, and a gas regulating valve and a liquid regulating valve, wherein: the condenser includes a first flow path and a second flow path, and heat exchange can be formed directly or indirectly between the first flow path and the second flow path; the outlet end of the compressor is connected to the inlet end of the first flow path. The present invention can maximize energy recovery according to demand, achieve energy-saving operation by adding a bypass heat exchange circuit, achieve both energy-saving stepless adjustment and compressor operation detection, and realize free switching between energy recovery and non-energy recovery.

Description

Technical Field

[0001] The invention relates to the field of refrigerant compressor testing, in particular to a compressor performance testing and energy conservation and utilization combined process. Background Art

[0002] The compressor is a driven fluid machine that can boost low-pressure gas to high-pressure gas. It is the heart of the refrigeration system. It sucks low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it through the operation of the motor to drive the piston, screw and other compressor components, and then discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle, thereby realizing the refrigeration cycle of compression → condensation (heat release) → expansion → evaporation (heat absorption).

[0003] like Figure 1 As shown, low-temperature and low-pressure gas is compressed by the compressor to discharge high-temperature and high-pressure gas, part of which is directly reduced in pressure through the gas regulating valve, and the other part of the gas is condensed through the condenser, wherein the liquid flows into the liquid reservoir, and becomes a gas-liquid two-phase state when passing through the liquid regulating valve, and is mixed with the first part of the gas, and enters the compressor again for compression, thereby realizing the cycle of compressor performance detection.

[0004] In the above process, the compressor consumes high energy during operation and needs to continuously introduce a cold source. When the gas is exchanging heat, it cannot obtain an available cold source or heat source, so that the potential available energy of the compressor cannot be fully utilized during the inspection. Summary of the invention

[0005] The purpose of the present invention is to provide a combined process of compressor performance detection and energy saving and utilization to address the deficiencies in the prior art. It can maximize energy recovery according to demand, achieve energy-saving operation by adding a bypass heat exchange circuit, achieve both energy-saving stepless adjustment and compressor operation detection, and realize free switching between energy recovery and non-energy recovery.

[0006] The present invention provides a combined process of compressor performance detection and energy conservation and utilization, including: a compressor, a condenser, an evaporator, a liquid storage device, an energy use station, a heat exchanger, and a gas regulating valve and a liquid regulating valve, wherein: the condenser includes a first flow path and a second flow path, and the first flow path and the second flow path can directly or indirectly form a heat exchange; the outlet end of the compressor is connected to the inlet end of the first flow path; the heat exchanger includes a third flow path and a fourth flow path, and the third flow path and the fourth flow path can directly or indirectly form a heat exchange; the evaporator includes a fifth flow path and a sixth flow path, and the fifth flow path and the sixth flow path can directly or indirectly form a heat exchange. Heat exchange is indirectly formed; the outlet end of the second flow path is connected to the inlet end of the third flow path, the outlet end of the first flow path is connected to the inlet end of the liquid reservoir, the outlet end of the liquid reservoir is connected to the fifth flow path of the evaporator, the outlet end of the third flow path is connected to the inlet end of the sixth flow path, the inlet and outlet ends of the sixth flow path are connected to the energy use station, the energy use station is connected to the inlet end of the fourth flow path, the inlet end of the compressor is connected to the outlet end of the fifth flow path, the outlet end of the fifth flow path is connected to the inlet end of the first flow path through a pipeline, and the inlet and outlet ends of the fifth flow path are connected through a pipeline.

[0007] In the technical solution of the embodiment of the present application, when the high-temperature and high-pressure gas is condensed, the cold source after the heat exchange can realize heat exchange between the gas and liquid phases. In this process, the energy use station can recover part of the energy therein on the one hand, and balance the heat exchange of the gas on the other hand. In this way, the compressor operation detection can be realized while the cold source or heat source can be recovered according to demand, thereby maximizing energy recovery.

[0008] A combined process of compressor performance detection and energy conservation and utilization as described above, wherein:

[0009] Preferably, the condenser, the heat exchanger and the evaporator all include a hot side and a cold side, and the cold side exchanges heat with the hot side through pipes or plates.

[0010] Preferably, the second flow path, the fourth flow path and the fifth flow path form the cold side, and the first flow path, the third flow path and the sixth flow path form the hot side.

[0011] Preferably, the inlet end of the second flow path is connected to a first water pump via a pipeline, and the first water pump is used to pass water into the second flow path.

[0012] Preferably, the inlet end of the energy use station and the outlet end of the sixth flow path are connected to a second pump body through a pipeline, and the second pump body is used to pass the water of the sixth flow path into the energy use station.

[0013] Preferably, the gas regulating valve is communicated with the outlet end of the fifth flow path and the inlet end of the first flow path through pipelines, and the liquid regulating valve is communicated with the outlet end of the liquid reservoir and the inlet end of the fifth flow path through pipelines.

[0014] Preferably, the outlet end of the fifth flow path and the inlet end of the compressor or the outlet end of the compressor and the inlet end of the first flow path are connected by a flow meter through a pipeline, and the flow meter is used to measure the intake flow or exhaust flow of the compressor respectively.

[0015] Preferably, the outlet end of the compressor, the outlet end of the gas regulating valve, and the outlet end of the liquid regulating valve are all provided with filters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a first structural schematic diagram of an embodiment provided in this application;

[0017] Figure 2 is a second structural schematic diagram of an embodiment provided by the present application;

[0018] Figure 3 It is a first structural schematic diagram of compressor performance detection in the prior art;

[0019] Figure 4 It is a second structural schematic diagram of compressor performance detection in the prior art.

[0020] In the drawings, the drawings are not necessarily drawn to scale.

[0021] Description of reference numerals:

[0022] 101. Compressor; 102. Condenser; 103. Flow meter; 104. Gas regulating valve; 105. Evaporator; 106. Liquid regulating valve; 107. Liquid storage tank; 108. Energy use station; 109. Heat exchanger.

[0023] In the prior art:

[0024] 1. Compressor; 2. Condenser; 3. Flow meter; 4. Gas regulating valve; 5. Liquid regulating valve; 6. Liquid storage tank. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0031] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0032] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] Embodiment 1

[0034] like Figure 1-2 As shown, an embodiment of the present invention provides a combined process of compressor 101 performance detection and energy conservation and utilization, including: compressor 101, condenser 102, evaporator 105, liquid storage device 107, energy use station 108, heat exchanger 109, gas regulating valve 104 and liquid regulating valve 106, wherein: condenser 102 includes a first flow path and a second flow path, and heat exchange can be formed directly or indirectly between the first flow path and the second flow path; the outlet end of compressor 101 is connected to the inlet end of the first flow path; the heat exchanger 109 includes a third flow path and a fourth flow path, and heat exchange can be formed directly or indirectly between the third flow path and the fourth flow path; the evaporator 105 includes a fifth flow path and the sixth flow path, and heat exchange can be formed directly or indirectly between the fifth flow path and the sixth flow path; the outlet end of the second flow path is connected to the inlet end of the third flow path, the outlet end of the first flow path is connected to the inlet end of the liquid reservoir 107, the outlet end of the liquid reservoir 107 is connected to the fifth flow path of the evaporator 105, the outlet end of the third flow path is connected to the inlet end of the sixth flow path, the inlet and outlet ends of the sixth flow path are connected to the energy use station 108, the energy use station 108 is connected to the inlet end of the fourth flow path, the inlet end of the compressor 101 is connected to the outlet end of the fifth flow path, the outlet end of the fifth flow path is connected to the inlet end of the first flow path through a pipeline, and the inlet and outlet ends of the fifth flow path are connected through a pipeline.

[0035] After the low-temperature and low-pressure gas is compressed by the compressor 101, the high-temperature and high-pressure gas is discharged, and part of the gas becomes low-temperature and low-pressure gas under the action of the gas regulating valve 104, and finally flows back to the compressor 101 to realize the circulation of the low-temperature and low-pressure gas; the other part of the gas is condensed by the condenser 102 to become a high-temperature and high-pressure liquid medium, and becomes a low-temperature and low-pressure gas-liquid two-phase medium after passing through the liquid storage tank 107 and the liquid regulating valve 106, and then becomes a low-temperature and low-pressure gas under the action of the evaporator 105, and finally enters the compressor 101 to realize the circulation of the low-temperature and low-pressure gas, and in this process, the cooling water after condensation can enter the sixth flow path and form heat exchange with the fifth flow path, wherein the low-temperature and low-pressure gas can be adjusted by adjusting the medium temperature in the sixth flow path and the fourth flow path through the energy use station 108, so that the potential available energy of the compressor 101 can be fully utilized, and the recovery of the cold source or the heat source can be controlled according to demand, and the energy recovery can be maximized, and the energy recovery and non-energy recovery can be switched freely.

[0036] In the embodiments provided in the present application, the condenser 102 , the heat exchanger 109 , and the evaporator 105 all include a hot side and a cold side, and the cold side and the hot side exchange heat through pipes or plates.

[0037] The structures of the condenser 102, the heat exchanger 109 and the evaporator 105 can be varied. The specific structures can refer to the technical solutions in the prior art. Those skilled in the art will know that as long as heat exchange can be achieved between the first flow path and the second flow path, the third flow path and the fourth flow path, and the fifth flow path and the sixth flow path.

[0038] In the embodiment provided in the present application, the second flow path, the fourth flow path and the fifth flow path form a cold side, and the first flow path, the third flow path and the sixth flow path form a hot side.

[0039] In the embodiment provided in the present application, the inlet end of the second flow path is connected to a first water pump through a pipeline, and the first water pump is used to pass water into the second flow path.

[0040] The heat of the gas in the cooler is taken away by the flow of cooling water in the second flow path. During heat exchange, the temperature of the cooling water increases, and the gas in the first flow path becomes a gas-liquid two-phase medium.

[0041] In the embodiment provided in the present application, the inlet end of the energy usage station 108 and the outlet end of the sixth flow path are connected to a second pump body through a pipeline, and the second pump body is used to pass the water of the sixth flow path into the energy usage station 108.

[0042] The energy use station 108 can be used to adjust the temperature of the medium in the fourth flow path and the sixth flow path, and can also recover the energy in the medium, thereby maximizing energy recovery.

[0043] In the embodiment provided in the present application, the gas regulating valve 104 is connected to the outlet end of the fifth flow path and the inlet end of the first flow path through pipelines, and the liquid regulating valve 106 is connected to the outlet end of the liquid reservoir 107 and the inlet end of the fifth flow path through pipelines.

[0044] In the embodiment provided in the present application, the outlet end of the fifth flow path and the inlet end of the compressor 101 or the outlet end of the compressor 101 and the inlet end of the first flow path are connected by a pipeline with a flow meter 103, and the flow meter 103 is used to measure the suction flow rate or exhaust flow rate of the compressor 101. The performance test of the compressor 101 is recorded by monitoring the suction flow rate or exhaust flow rate of the compressor 101.

[0045] In the embodiment provided in the present application, filters are provided at the outlet of the compressor 101, the outlet of the gas regulating valve 104, and the outlet of the liquid regulating valve 106. The gas is filtered when entering the filter to prevent impurities in the gas from entering the next process.

[0046] The above implementation has the following technical effects:

[0047] 1. The high energy consumption problem during the performance detection of the compressor 101 is solved, and the potential available energy of the compressor 101 can be fully utilized.

[0048] 2. During the performance test of compressor 101, energy-saving operation and normal operation can be switched freely, and the energy recovery ratio can be adjusted freely, so that additional usable energy can be generated during the test and energy recovery can be maximized.

[0049] Embodiment 2

[0050] In the prior art, such as Figure 3-4 As shown, conventional compressor performance testing is adopted, including: compressor 1, condenser 2, flow meter 3, gas regulating valve 4, liquid regulating valve 5 and liquid storage tank 6. By passing low-temperature and low-pressure refrigerant gas into the compressor 1, the gas is compressed by the compressor 1, and the compressed gas is condensed by the condenser 2. During the operation of the equipment, it is necessary to continuously provide a cold source to the condenser 2. Figure 3 Using the inspiratory flow meter method, Figure 4 Using the exhaust flow meter method, the energy consumption of the compressor 1 is relatively high during operation, resulting in serious energy waste. The compressor 1 also has potential available energy that has not been fully utilized.

[0051] With respect to the performance testing of the compressor 101 , the technical solution of the present application can maximize energy recovery according to demand, including cold source recovery and heat source recovery, thereby solving the problem of high energy consumption during the testing of the compressor 101 .

[0052] The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A combined process of compressor performance detection and energy conservation and utilization, characterized in that: include: Compressors, condensers, evaporators, receivers, energy use stations, heat exchangers and gas and liquid regulating valves, where: The condenser comprises a first flow path and a second flow path, and heat exchange can be formed directly or indirectly between the first flow path and the second flow path; The outlet end of the compressor is in communication with the inlet end of the first flow path; The heat exchanger includes a third flow path and a fourth flow path, and heat exchange can be formed directly or indirectly between the third flow path and the fourth flow path. The evaporator includes a fifth flow path and a sixth flow path, and heat exchange can be formed directly or indirectly between the fifth flow path and the sixth flow path. The outlet end of the second flow path is communicated with the inlet end of the third flow path, the outlet end of the first flow path is communicated with the inlet end of the liquid reservoir, the outlet end of the liquid reservoir is communicated with the fifth flow path of the evaporator, the outlet end of the third flow path is communicated with the inlet end of the sixth flow path, the inlet end and the outlet end of the sixth flow path are communicated with the energy use station, the energy use station is communicated with the inlet end of the fourth flow path, the inlet end of the compressor is communicated with the outlet end of the fifth flow path, the outlet end of the fifth flow path is communicated with the inlet end of the first flow path through a pipeline, and the inlet end and the outlet end of the fifth flow path are communicated through a pipeline; The inlet end of the energy use station and the outlet end of the sixth flow path are connected by a pipeline with a second pump body, and the second pump body is used to pass the water of the sixth flow path into the energy use station; The gas regulating valve is communicated with the outlet end of the fifth flow path and the inlet end of the first flow path through pipelines, and the liquid regulating valve is communicated with the outlet end of the liquid reservoir and the inlet end of the fifth flow path through pipelines; The outlet end of the fifth flow path and the inlet end of the compressor or the outlet end of the compressor and the inlet end of the first flow path are connected by a flow meter through a pipeline, and the flow meter is used to measure the suction flow rate or exhaust flow rate of the compressor respectively.

2. A combined process of compressor performance detection and energy conservation and utilization according to claim 1, characterized in that: The condenser, heat exchanger and evaporator all include a hot side and a cold side, and the cold side exchanges heat with the hot side through pipes or plates.

3. A combined process of compressor performance detection and energy conservation and utilization according to claim 2, characterized in that: The second flow path, the fourth flow path, and the fifth flow path form the cold side, and the first flow path, the third flow path, and the sixth flow path form the hot side.

4. A combined process of compressor performance detection and energy conservation and utilization according to claim 3, characterized in that: The inlet end of the second flow path is connected to a first water pump through a pipeline, and the first water pump is used to pass water into the second flow path.

5. A combined process of compressor performance detection and energy conservation and utilization according to claim 1, characterized in that: The outlet end of the compressor, the outlet end of the gas regulating valve, and the outlet end of the liquid regulating valve are all provided with filtering elements.

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