CN110595813A - Split type Stirling refrigerator inflation and performance test bench - Google Patents

Split type Stirling refrigerator inflation and performance test bench Download PDF

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Publication number
CN110595813A
CN110595813A CN201910863151.2A CN201910863151A CN110595813A CN 110595813 A CN110595813 A CN 110595813A CN 201910863151 A CN201910863151 A CN 201910863151A CN 110595813 A CN110595813 A CN 110595813A
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CN
China
Prior art keywords
refrigerator
helium
inflation
switch valve
split
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910863151.2A
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Chinese (zh)
Inventor
杨俊卿
胡金波
牛涛
孙勇超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaimai (luoyang) Gas Source Co Ltd
Original Assignee
Kaimai (luoyang) Gas Source Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kaimai (luoyang) Gas Source Co Ltd filed Critical Kaimai (luoyang) Gas Source Co Ltd
Priority to CN201910863151.2A priority Critical patent/CN110595813A/en
Publication of CN110595813A publication Critical patent/CN110595813A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/14Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/202Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00Subject matter not provided for in other groups of this subclass
    • G01M99/002Thermal testing

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The split Stirling refrigerator inflation and performance test bench comprises a vacuumizing device for vacuumizing a refrigerator, a helium injection device for injecting helium into the refrigerator, a helium mass spectrometer leak detector for detecting leakage of the refrigerator, and a test system for testing refrigerating performance of the refrigerator, wherein the refrigerator, the vacuumizing device, the helium injection device and the helium mass spectrometer leak detector are connected with the test system. The invention solves a plurality of problems in the manual operation process and integrates the data processing and report generation in the later period. The invention has high automation degree and reliability, can achieve unattended operation, greatly improves the research and development time and promotes the engineering application level of products, has innovation, is in the domestic advanced technology, has wide use space and can generate higher economic benefit.

Description

Split type Stirling refrigerator inflation and performance test bench
Technical Field
The invention relates to the technical field of refrigeration, in particular to a split type Stirling refrigerator inflation and performance test bench.
Background
With the development of the photoelectric technology, the infrared detector has increasingly wide application in military reconnaissance, thermal imagery, early warning, remote sensing and meteorological aspects. The sensitivity of the infrared detector is greatly influenced by temperature, so that the infrared detector needs to be cooled to improve the sensitivity. The Stirling refrigerator is small in size, compact in structure and small in vibration, and is particularly suitable for refrigerating the infrared detector, so that the refrigerating performance of the Stirling refrigerator has a great relation with the sensitivity of the infrared detector, and the detection of the refrigerating performance of the Stirling refrigerator is particularly important.
The conventional Stirling refrigerator (hereinafter referred to as refrigerator) is inflated and performance detection is performed manually, and after a tested refrigerator is started, various sensors are used for testing the refrigerating performance of the refrigerator. This test method has a number of disadvantages:
1. before testing, the tightness of the refrigerator itself is first checked to be acceptable, and the cooling medium is leak-free. The original leakage inspection is a traditional method for detecting leakage by visual inspection and soapy water coating, and has the influence factors of low leakage detection precision and artificial aspects on the test result;
2. the test data can not be acquired in real time, manual reading is needed, and the real-time performance and accuracy of the data are poor;
3. the analysis and calculation of the test data are carried out manually, the efficiency is low, and the labor capacity is large.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a split type Stirling refrigerator inflation and performance test bench, which aims to:
1. the problems of low leak detection precision and large influence of human factors are solved;
2. realizing real-time acquisition of test data;
3. and the automation of analysis and calculation of test data is realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
the split Stirling refrigerator inflation and performance test bench comprises a vacuumizing device for vacuumizing a refrigerator, a helium injection device for injecting helium into the refrigerator, a helium mass spectrometer leak detector for detecting leakage of the refrigerator, and a test system for testing refrigerating performance of the refrigerator, wherein the refrigerator, the vacuumizing device, the helium injection device and the helium mass spectrometer leak detector are connected with the test system.
The technical scheme is further improved, the vacuum pumping device comprises a molecular pump, and the molecular pump is connected with the refrigerating machine through an air pumping electromagnetic switch valve or an air pumping manual switch valve.
According to the technical scheme, the helium injection device comprises a helium tank, the helium tank is connected with the refrigerating machine through a pressure reducing valve, and a pressure transmitter is arranged on a pipeline between the pressure reducing valve and the refrigerating machine.
The technical scheme is further improved, and a filter is arranged between the pressure reducing valve and the refrigerating machine.
The technical scheme is further improved, an inflation electromagnetic switch valve and an inflation manual switch valve are arranged between the pressure reducing valve and the refrigerator, and the pressure reducing valve is connected with the refrigerator through the inflation electromagnetic switch valve or the inflation manual switch valve.
The technical scheme is further improved, and the test system comprises a platinum resistance thermometer, a piezoelectric pressure transmitter, a charge amplifier, data acquisition equipment and an industrial personal computer.
Due to the adoption of the technical scheme, compared with the background technology, the invention has the following beneficial effects:
according to the invention, the leak detection is carried out through the vacuumizing device, the helium gas injection device and the helium mass spectrometer leak detector, the precision and the reliability of leak detection are obviously improved, and the problems of low precision of manual leak detection and large influence of human factors are solved.
The invention collects the signals of various sensors in real time through the data collecting equipment, does not need manual reading, and has high real-time performance and accuracy of data collection; the analysis and calculation of the test data are completed by the industrial personal computer, and the method has the advantages of accurate analysis and calculation and high efficiency.
The invention can implement rapid detection on the performance index of the refrigerator and has the characteristics of plug and play and convenient operation. The method can be used for detecting the items of refrigerating temperature, refrigerating capacity, input power, cold finger vibration, whole machine vibration, cooling time, posture influence and the like of the refrigerating machine, and has the advantages of multiple detection items and high detection accuracy.
The invention solves a plurality of problems in the manual operation process and integrates the data processing and report generation in the later period. The invention has high automation degree and reliability, can achieve unattended operation, greatly improves the research and development time and promotes the engineering application level of products, has innovation, is in the domestic advanced technology, has wide use space and can generate higher economic benefit.
Drawings
FIG. 1 is a schematic view showing the connection of the evacuation device, the helium gas injection device and the gas path of the refrigerator.
Fig. 2 is a block diagram of the test system.
Fig. 3 is a block diagram of the data acquisition software.
In the figure: 1. a refrigerator; 2. a helium mass spectrometer leak detector; 3. a molecular pump; 4. a helium tank; 5. a pressure reducing valve; 6. a pressure transmitter.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A split Stirling refrigerator inflation and performance test bench comprises a vacuumizing device used for vacuumizing a refrigerator 1, a helium injection device used for injecting helium into the refrigerator 1, a helium mass spectrometer leak detector 2 used for detecting leakage of the refrigerator 1, and a test system used for testing the refrigerating performance of the refrigerator 1, wherein the refrigerator 1, the vacuumizing device, the helium injection device and the helium mass spectrometer leak detector 2 are connected with the test system.
As shown in fig. 1, the vacuum pumping device comprises a molecular pump 3, and the molecular pump 3 is connected with the refrigerator 1 through a pumping electromagnetic switch valve or a pumping manual switch valve. The connection between the molecular pump 3 and the refrigerator 1 is normally disconnected or communicated by using an air-extracting electromagnetic switch valve, and the connection between the molecular pump 3 and the refrigerator 1 can also be disconnected or communicated by using an air-extracting manual switch valve under the condition of maintenance or in a manual mode. When the vacuum pumping device works, the air pumping electromagnetic switch valve is opened to pump the refrigerator 1 in vacuum, and when the digital display vacuum degree meter of the molecular pump 3 measures that the vacuum degree reaches 0.1Pa, the molecular pump 3 is closed to finish the vacuum pumping process. The whole vacuumizing is automatically completed by a test system, the vacuumizing can also be performed in a manual mode, and an air-extracting manual switch valve is opened manually.
The helium injection device comprises a helium tank 4, helium with the purity of 99.999% is filled in the helium tank 4, and the performance index of the refrigerator is prevented from being influenced by the pollution of working medium gas. The helium bottle 4 is connected with the refrigerator 1 through a pressure reducing valve 5, and a pressure transmitter 6 is arranged on a pipeline between the pressure reducing valve 5 and the refrigerator 1. An inflation electromagnetic switch valve and an inflation manual switch valve are arranged between the pressure reducing valve 5 and the refrigerator 1, and the pressure reducing valve 5 is connected with the refrigerator 1 through the inflation electromagnetic switch valve or the inflation manual switch valve. The pressure reducing valve 5 is an overflow pressure reducing valve, and the control pressure is 0.1 MPa. When the air-filling and air-filling electromagnetic switch valve works, the air-filling and air-filling electromagnetic switch valve in the air-filling pipeline is opened, and the decompressed helium is sent into the refrigerating machine. And when the inflation pressure measured by the pressure transmitter 6 reaches 0.1MPa, closing the inflation electromagnetic switch valve to finish the helium inflation process. The whole helium filling process is automatically completed by the test system. The helium can be filled manually, and the manual switch valve for filling air can be opened manually.
In order to clean the charged helium gas, a filter for filtering impurities in the helium gas is provided between the pressure reducing valve 5 and the refrigerator 1.
The helium mass spectrometer leak detector is a special leak detector using helium as leak-indicating gas, and has the characteristics of stable performance and high sensitivity. The vacuumizing device is used for vacuumizing air in the refrigerating machine 1, and high-purity helium is injected through the helium injection device, so that the purity of the helium in the refrigerating machine 1 is guaranteed, the proportion of the helium in the air is small, the helium in the air around the refrigerating machine 1 is subjected to mass spectrometry through the helium mass spectrometer leak detector, and whether leakage occurs in the refrigerating machine 1 or not and the leakage amount can be detected sensitively. Compared with the traditional method for detecting leakage by visual inspection and soapy water coating, the method has the advantages that the accuracy and the reliability of leakage detection are obviously improved. The helium mass spectrometer leak detector is used for detecting the leakage rate of the refrigerating machine, so that whether the refrigerating machine influences performance index parameters due to leakage of working medium gas or not can be weighed, and even a test fault occurs.
As shown in fig. 2, the test system adopts a measurement and control computer system based on a GBIP bus, and mainly includes a platinum resistance thermometer, a piezoelectric pressure transmitter, a charge amplifier, a data acquisition device, an industrial personal computer, a connection cable, and an operation cabinet, thereby forming a complete test system.
The platinum resistance thermometer and the piezoelectric pressure transmitter are used for collecting temperature and pressure signals, the temperature and pressure signals are transmitted to the data collecting equipment through the charge amplifier, the collected temperature and pressure signals are converted into detection data by the data collecting equipment and transmitted to the industrial personal computer, and the industrial personal computer analyzes and calculates the detection data and issues a test report.
Data acquisition software used by the data acquisition equipment is developed by programming by adopting Labview on a Windows XP operating system. The whole software system adopts a modular design, and a user can randomly select and combine test items; a friendly man-machine interaction interface is designed, so that the operation and the use of a user are facilitated; the parameter settings are classified, different parameters are set with different levels of setting authority, the setting parameters are prevented from being changed randomly, and the software mainly comprises the following functional modules as shown in fig. 3.
a) The system management module comprises equipment self-checking, user management, acquisition channel parameter setting, test information setting and the like;
b) the data acquisition module is used for synchronously acquiring the sensor signals and implementing online display;
c) the calibration module is used for completing the calibration of each unit of the test system;
d) and the data processing module is used for completing the functions of analysis and calculation of test data, curve playback, test report generation, ASCII data file and the like.
The invention can implement rapid detection on the performance index of the refrigerator and has the characteristics of plug and play and convenient operation. The method can be used for detecting the items of refrigerating temperature, refrigerating capacity, input power, cold finger vibration, whole machine vibration, cooling time, posture influence and the like of the refrigerating machine, and has the advantages of multiple detection items and high detection accuracy.
According to the invention, the leak detection is carried out through the vacuumizing device, the helium gas injection device and the helium mass spectrometer leak detector, the precision and the reliability of leak detection are obviously improved, and the problems of low precision of manual leak detection and large influence of human factors are solved.
The invention collects the signals of various sensors in real time through the data collecting equipment, does not need manual reading, and has high real-time performance and accuracy of data collection; the analysis and calculation of the test data are completed by the industrial personal computer, and the method has the advantages of accurate analysis and calculation and high efficiency.
The invention solves a plurality of problems in the manual operation process and integrates the data processing and report generation in the later period. The invention has high automation degree and reliability, can achieve unattended operation, greatly improves the research and development time and promotes the engineering application level of products, has innovation, is in the domestic advanced technology, has wide use space and can generate higher economic benefit.
The details of which are not described in the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a split type stirling refrigerator is aerifyd and capability test platform which characterized by: the device comprises a vacuumizing device for vacuumizing a refrigerator (1), a helium injection device for injecting helium into the refrigerator (1), a helium mass spectrometer leak detector (2) for detecting leakage of the refrigerator (1) and a test system for testing the refrigerating performance of the refrigerator (1), wherein the refrigerator (1), the vacuumizing device, the helium injection device and the helium mass spectrometer leak detector (2) are connected with the test system.
2. The split-type stirling cooler aeration and performance test bed of claim 1, wherein: the vacuum pumping device comprises a molecular pump (3), and the molecular pump (3) is connected with the refrigerator (1) through an air pumping electromagnetic switch valve or an air pumping manual switch valve.
3. The split-type stirling cooler aeration and performance test bed of claim 1, wherein: the helium injection device comprises a helium tank (4), the helium tank (4) is connected with the refrigerator (1) through a pressure reducing valve (5), and a pressure transmitter (6) is arranged on a pipeline between the pressure reducing valve (5) and the refrigerator (1).
4. The split-type stirling cooler air-charging and performance testing stand of claim 3, wherein: a filter is arranged between the pressure reducing valve (5) and the refrigerator (1).
5. The split-type stirling cooler air-charging and performance testing stand of claim 3, wherein: an inflation electromagnetic switch valve and an inflation manual switch valve are arranged between the pressure reducing valve (5) and the refrigerator (1), and the pressure reducing valve (5) is connected with the refrigerator (1) through the inflation electromagnetic switch valve or the inflation manual switch valve.
6. The split-type stirling cooler aeration and performance test bed of claim 1, wherein: the test system comprises a platinum resistance thermometer, a piezoelectric pressure transmitter, a charge amplifier, data acquisition equipment and an industrial personal computer.
CN201910863151.2A 2019-09-12 2019-09-12 Split type Stirling refrigerator inflation and performance test bench Pending CN110595813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910863151.2A CN110595813A (en) 2019-09-12 2019-09-12 Split type Stirling refrigerator inflation and performance test bench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910863151.2A CN110595813A (en) 2019-09-12 2019-09-12 Split type Stirling refrigerator inflation and performance test bench

Publications (1)

Publication Number Publication Date
CN110595813A true CN110595813A (en) 2019-12-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910863151.2A Pending CN110595813A (en) 2019-09-12 2019-09-12 Split type Stirling refrigerator inflation and performance test bench

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111795720A (en) * 2020-05-25 2020-10-20 上海齐耀动力技术有限公司 Stirling refrigerator test bench working condition gear control system and control method
CN117906881A (en) * 2024-03-19 2024-04-19 临沂市交通制冷工程有限公司 Vacuum testing device of refrigerator

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Publication number Priority date Publication date Assignee Title
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CN110068430A (en) * 2019-05-09 2019-07-30 中南大学 A kind of leakage test method of aerospace composite tank
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CN210427039U (en) * 2019-09-12 2020-04-28 凯迈(洛阳)气源有限公司 Split type Stirling refrigerator inflation and performance test bench

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Publication number Priority date Publication date Assignee Title
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CN204924590U (en) * 2015-08-13 2015-12-30 中国人民解放军63653部队 A pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum
CN110082046A (en) * 2019-04-26 2019-08-02 中国科学院理化技术研究所 A kind of valve low temperature leak detection system and leak hunting method
CN110068430A (en) * 2019-05-09 2019-07-30 中南大学 A kind of leakage test method of aerospace composite tank
CN210427039U (en) * 2019-09-12 2020-04-28 凯迈(洛阳)气源有限公司 Split type Stirling refrigerator inflation and performance test bench

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111795720A (en) * 2020-05-25 2020-10-20 上海齐耀动力技术有限公司 Stirling refrigerator test bench working condition gear control system and control method
CN117906881A (en) * 2024-03-19 2024-04-19 临沂市交通制冷工程有限公司 Vacuum testing device of refrigerator
CN117906881B (en) * 2024-03-19 2024-05-24 临沂市交通制冷工程有限公司 Vacuum testing device of refrigerator

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