CN116335916A - Combined flow of compressor performance detection and energy conservation and utilization - Google Patents
Combined flow of compressor performance detection and energy conservation and utilization Download PDFInfo
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- CN116335916A CN116335916A CN202310282306.XA CN202310282306A CN116335916A CN 116335916 A CN116335916 A CN 116335916A CN 202310282306 A CN202310282306 A CN 202310282306A CN 116335916 A CN116335916 A CN 116335916A
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- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000004134 energy conservation Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 19
- 239000003507 refrigerant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/064—Cooling by a cooling jacket in the pump casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a compressor performance detection and energy conservation utilization combined process, which comprises the following steps: compressor, condenser, evaporator, reservoir, energy use station, heat exchanger, gas regulating valve and liquid regulating valve, wherein: the condenser comprises a first flow path and a second flow path, and heat exchange can be directly or indirectly formed between the first flow path and the second flow path; an outlet end of the compressor communicates with an inlet end of the first flow path. According to the invention, the maximization of energy recovery can be realized according to the requirements, the energy-saving operation is realized by adding the bypass heat exchange loop, the energy-saving stepless adjustable and the compressor operation detection are both realized, and the free switching between energy recovery and non-energy recovery is realized.
Description
Technical Field
The invention relates to the field of refrigerant compressor testing, in particular to a combined flow of compressor performance detection and energy conservation and utilization.
Background
The compressor is a driven fluid machine that lifts low pressure gas to high pressure gas and is the heart of the refrigeration system. The refrigerating cycle of compression, condensation (heat release), expansion and evaporation (heat absorption) is realized by sucking low-temperature and low-pressure refrigerant gas from the air suction pipe, driving compressor components such as a piston, a screw rod and the like to compress the refrigerant gas through the operation of a motor, and then discharging high-temperature and high-pressure refrigerant gas to the air discharge pipe to provide power for the refrigerating cycle.
As shown in fig. 1, the low-temperature low-pressure gas is compressed by a compressor, the high-temperature high-pressure gas is discharged, part of the gas is directly reduced in pressure by a gas regulating valve, the other part of the gas is condensed by a condenser, the liquid flows into a liquid reservoir, is in a gas-liquid two-phase state when passing through the liquid regulating valve, is mixed with the first part of the gas, and enters the compressor again for compression, so that the cycle of detecting the performance of the compressor is realized.
In the process, the compressor has higher energy consumption in operation, a cold source is required to be continuously introduced, and the available cold source or heat source cannot be obtained when gas exchanges heat, so that the potential available energy of the compressor cannot be fully exerted when the compressor is detected.
Disclosure of Invention
The invention aims to provide a combined flow of compressor performance detection and energy conservation and utilization, which aims to solve the defects in the prior art, and can realize the maximization of energy recovery according to requirements, realize energy-saving operation by adding a bypass heat exchange loop, realize energy-saving stepless adjustment and compressor operation detection, and realize free switching between energy recovery and non-energy recovery.
The invention provides a compressor performance detection and energy conservation utilization combined process, which comprises the following steps: compressor, condenser, evaporator, reservoir, energy use station, heat exchanger, gas regulating valve and liquid regulating valve, wherein: the condenser comprises a first flow path and a second flow path, and heat exchange can be directly or indirectly formed between the first flow path and the second flow path; the outlet end of the compressor is communicated with the inlet end of the first flow path; the heat exchanger comprises a third flow path and a fourth flow path, heat exchange can be directly or indirectly formed between the third flow path and the fourth flow path, the evaporator comprises a fifth flow path and a sixth flow path, and heat exchange can be directly or indirectly formed 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 source using station, the energy source using 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.
In the technical scheme of the embodiment of the application, when the high-temperature and high-pressure gas is condensed, the heat exchange of the gas with the gas and the liquid phases can be realized by the cold source after heat exchange, and in the process, the energy utilization station can recover part of energy in the gas on one hand and balance the heat exchange of the gas on the other hand, so that the operation detection of the compressor can be realized, and the recovery of the cold source or the heat source can be realized according to the requirement, thereby realizing the maximization of energy recovery.
The compressor performance detection and energy conservation utilization combined flow comprises the following steps:
preferably, the condenser, heat exchanger and evaporator each comprise a hot side and a cold side, the cold side exchanging heat with the hot side via a pipe or a plate.
Preferably, the second, fourth and fifth flow paths form the cold side, and the first, third and sixth flow paths form the hot side.
Preferably, the inlet end of the second flow path is connected with a first water pump through a pipeline, and the first water pump is used for leading water into the second flow path.
Preferably, the inlet end of the energy utilization station and the outlet end of the sixth flow path are connected with a second pump body through a pipeline, and the second pump body is used for leading the water of the sixth flow path into the energy utilization station.
Preferably, the gas regulating valve is respectively communicated with the outlet end of the fifth flow path and the inlet end of the first flow path through a pipeline, and the liquid regulating valve is respectively communicated with the outlet end of the liquid reservoir and the inlet end of the fifth flow path through a pipeline.
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 with a flowmeter through a pipeline, and the flowmeter is used for measuring the suction flow or the discharge flow of the compressor respectively.
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 filtering pieces.
Drawings
FIG. 1 is a first structural schematic diagram of an embodiment provided herein;
FIG. 2 is a second structural schematic diagram of an embodiment provided herein;
FIG. 3 is a first structural schematic diagram of a prior art compressor performance test;
fig. 4 is a second structural schematic diagram of a prior art compressor performance test.
In the drawings, the drawings are not necessarily to scale.
Reference numerals illustrate:
101. a compressor; 102. a condenser; 103. a flow meter; 104. a gas regulating valve; 105. an evaporator; 106. a liquid regulating valve; 107. a reservoir; 108. an energy use station; 109. a heat exchanger.
In the prior art:
1. a compressor; 2. a condenser; 3. a flow meter; 4. a gas regulating valve; 5. a liquid regulating valve; 6. a reservoir.
Detailed Description
Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).
In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in fig. 1-2, an embodiment of the present invention provides a combined compressor 101 performance detection and energy conservation and utilization process, including: a compressor 101, a condenser 102, an evaporator 105, a reservoir 107, an energy use station 108, a heat exchanger 109, and a gas regulating valve 104 and a liquid regulating valve 106, wherein: the condenser 102 includes a first flow path and a second flow path, and heat exchange can be directly or indirectly formed between the first flow path and the second flow path; an outlet end of the compressor 101 communicates with an inlet end of the first flow path; the heat exchanger 109 includes a third flow path and a fourth flow path between which heat exchange can be directly or indirectly formed, and the evaporator 105 includes a fifth flow path and a sixth flow path between which heat exchange can be directly or indirectly formed; 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 107, the outlet end of the liquid reservoir 107 is communicated with the fifth flow path of the evaporator 105, 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 using station 108, the energy using station 108 is communicated with the inlet end of the fourth flow path, the inlet end of the compressor 101 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 of the fifth flow path is communicated with the outlet end through a pipeline.
The low-temperature and low-pressure gas is compressed by the compressor 101 and then is discharged, wherein 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 high-pressure liquid medium, the high-temperature high-pressure liquid medium is changed into a low-temperature low-pressure gas-liquid two-phase medium after passing through the liquid storage 107 and the liquid regulating valve 106, then the low-temperature low-pressure gas is changed into a low-temperature low-pressure gas under the action of the evaporator 105, the low-temperature low-pressure gas is finally circulated in the compressor 101, in the process, the condensed cooling water can enter a sixth flow path and form heat exchange with a fifth flow path, the low-temperature low-pressure gas can be regulated by regulating the medium temperature in the sixth flow path and a fourth flow path through the energy using station 108, so that the potential available energy of the compressor 101 can be fully exerted, the recovery of a cold source or a heat source can be controlled according to the requirement, the maximization of the energy recovery can be realized, and the free switching between the energy recovery and the non-energy recovery can be realized.
In the embodiment provided herein, the condenser 102, heat exchanger 109, and evaporator 105 each comprise a hot side and a cold side, the cold side and the hot side exchanging heat through pipes or plates.
The structures of the condenser 102, the heat exchanger 109, and the evaporator 105 may be various, and specific structures may refer to the technical solutions in the prior art, and those skilled in the art can know that heat exchange between the first flow path and the second flow path, between the third flow path and the fourth flow path, and between the fifth flow path and the sixth flow path can be achieved.
In embodiments provided herein, the second, fourth, and fifth flow paths form a cold side, and the first, third, and sixth flow paths form a hot side.
In the embodiment provided by the application, the inlet end of the second flow path is connected with a first water pump through a pipeline, and the first water pump is used for leading water into the second flow path.
The heat of the gas in the cooler is taken away by the flow of the cooling water in the second flow path, the temperature of the cooling water is increased when the heat exchange is carried out, and the gas in the first flow path becomes a gas-liquid two-phase medium.
In the embodiment provided in the application, the inlet end of the energy using station 108 and the outlet end of the sixth flow path are connected with a second pump body through a pipeline, and the second pump body is used for introducing the water of the sixth flow path into the energy using station 108.
The energy recovery station 108 can adjust the temperature of the medium in the fourth and sixth channels, and can recover the energy in the medium, thereby maximizing the energy recovery.
In the embodiment provided herein, the gas regulating valve 104 is in communication with the outlet end of the fifth flow path and the inlet end of the first flow path, respectively, through a pipe, and the liquid regulating valve 106 is in communication with the outlet end of the reservoir 107 and the inlet end of the fifth flow path, respectively, through a pipe.
In the embodiment provided in the application, the flow meter 103 is connected to 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 through a pipeline, and the flow meter 103 is used for measuring the suction flow or the exhaust flow of the compressor 101 respectively. The performance test of the compressor 101 is recorded by monitoring the suction flow or discharge flow of the compressor 101.
In the embodiment provided in the application, the outlet end of the compressor 101, the outlet end of the gas regulating valve 104 and the outlet end of the liquid regulating valve 106 are provided with filtering elements. The gas is filtered in the filter element, so that impurities in the gas are prevented from entering the next process.
Through the embodiment, the following technical effects are achieved:
1. the problem of high energy consumption in the performance detection process of the compressor 101 is solved, and potential available energy sources existing in the compressor 101 can be fully utilized.
2. The energy-saving operation and the normal operation are freely switched in the performance detection process of the compressor 101, the energy recovery duty ratio is freely adjusted, the detection is realized, additional available energy is generated at the same time, and the energy recovery is maximized.
Example two
In the prior art, as shown in fig. 3-4, conventional compressor performance testing is employed, including: a compressor 1, a condenser 2, a flow meter 3, a gas regulating valve 4, a liquid regulating valve 5 and a liquid reservoir 6. By introducing low-temperature low-pressure refrigerant gas into the compressor 1, compressing the gas by the compressor 1 and condensing the compressed gas by the condenser 2, the equipment needs to continuously provide a cold source for the condenser 2 in the operation process, wherein the air suction flow meter method is adopted in fig. 3, the exhaust flow meter method is adopted in fig. 4, the energy consumption of the compressor 1 in the operation process is relatively high, the energy waste is serious, and the potentially available energy of the compressor 1 can not be fully exerted.
According to the technical scheme of the application, the energy recovery can be maximized according to requirements, and the problems of high energy consumption in the detection process of the compressor 101 are solved, including cold source recovery and heat source recovery.
The foregoing description of the preferred embodiments of the invention should not be taken as limiting the scope of the invention, but all changes and modifications that come within the meaning and range of equivalents of the invention are intended to be embraced therein.
Claims (8)
1. A combined compressor performance detection and energy conservation and utilization process, comprising: compressor, condenser, evaporator, reservoir, energy use station, heat exchanger, gas regulating valve and liquid regulating valve, wherein:
the condenser comprises a first flow path and a second flow path, and heat exchange can be directly or indirectly formed between the first flow path and the second flow path;
the outlet end of the compressor is communicated with the inlet end of the first flow path;
the heat exchanger comprises a third flow path and a fourth flow path, heat exchange can be directly or indirectly formed between the third flow path and the fourth flow path, the evaporator comprises a fifth flow path and a sixth flow path, and heat exchange can be directly or indirectly formed 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 source using station, the energy source using 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.
2. The combined compressor performance detection and energy conservation and utilization process of claim 1, wherein: the condenser, the heat exchanger and the evaporator all comprise a hot side and a cold side, and the cold side exchanges heat with the hot side through a pipeline or a plate.
3. The combined compressor performance detection and energy conservation and utilization process of claim 2, wherein: the second, fourth and fifth flow paths form the cold side, and the first, third and sixth flow paths form the hot side.
4. A combined compressor performance monitoring and energy conservation process as set forth in claim 3, wherein: the inlet end of the second flow path is connected with a first water pump through a pipeline, and the first water pump is used for leading water into the second flow path.
5. The combined compressor performance detection and energy conservation and utilization process of claim 1, wherein: the inlet end of the energy source using station and the outlet end of the sixth flow path are connected with a second pump body through a pipeline, and the second pump body is used for leading the water of the sixth flow path into the energy source using station.
6. The combined compressor performance detection and energy conservation and utilization process of claim 1, wherein: the gas regulating valve is respectively 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 respectively communicated with the outlet end of the liquid reservoir and the inlet end of the fifth flow path through pipelines.
7. The combined compressor performance detection and energy conservation and utilization process of claim 1, wherein: and the outlet end of the fifth flow path is connected with the inlet end of the compressor or the outlet end of the compressor is connected with the inlet end of the first flow path through a pipeline, and the flowmeter is respectively used for measuring the air suction flow or the air discharge flow of the compressor.
8. The combined compressor performance detection and energy conservation and utilization process of claim 1, wherein: 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 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310282306.XA CN116335916A (en) | 2023-03-22 | 2023-03-22 | Combined flow of compressor performance detection and energy conservation and utilization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310282306.XA CN116335916A (en) | 2023-03-22 | 2023-03-22 | Combined flow of compressor performance detection and energy conservation and utilization |
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| CN116335916A true CN116335916A (en) | 2023-06-27 |
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| CN202310282306.XA Pending CN116335916A (en) | 2023-03-22 | 2023-03-22 | Combined flow of compressor performance detection and energy conservation and utilization |
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Effective date of registration: 20230908 Address after: Room 1606, Building 1, Tongchuang Science Park, No. 5, Tianzhi Road, High tech Zone, Hefei City, Anhui Province, 230000 Applicant after: Hefei Tianshi Fluid Technology Co.,Ltd. Applicant after: FUSHENG INDUSTRIAL (SHANGHAI) Co.,Ltd. Address before: 1st Floor, Building C6, Science and Technology Industrial Park, No. 168 Xiangzhang Avenue, High-tech Zone, Hefei City, Anhui Province, 230000 Applicant before: HEFEI TESTAR MEASUREMENT AND CONTROL TECHNOLOGY Co.,Ltd. |