CN116086731A - System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling - Google Patents

System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling Download PDF

Info

Publication number
CN116086731A
CN116086731A CN202211737744.2A CN202211737744A CN116086731A CN 116086731 A CN116086731 A CN 116086731A CN 202211737744 A CN202211737744 A CN 202211737744A CN 116086731 A CN116086731 A CN 116086731A
Authority
CN
China
Prior art keywords
valve
pressure
platform
nitrogen
detecting
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
CN202211737744.2A
Other languages
Chinese (zh)
Inventor
冯奇峰
何亚丁
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.)
Shanghai Jinzi Automation Instrument Co ltd
Original Assignee
Shanghai Jinzi Automation Instrument 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 Shanghai Jinzi Automation Instrument Co ltd filed Critical Shanghai Jinzi Automation Instrument Co ltd
Priority to CN202211737744.2A priority Critical patent/CN116086731A/en
Publication of CN116086731A publication Critical patent/CN116086731A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention discloses a system and a method for detecting the opening pressure and leakage quantity of an integral valve for nitrogen calling, wherein the system comprises an air compressor, a host end, a first platform and a second platform, and the air compressor is connected with a first manual valve and a second manual valve; the first manual valve is sequentially connected with the first regulating valve and the first storage tank through a first filter, and the first storage tank is communicated with the second electric valve, the third electric valve and the fourth electric valve through a first electric valve; the second electric valve, the third electric valve and the fourth electric valve are respectively connected with a corresponding first flowmeter, a second flowmeter and a third flowmeter. The system can realize the test of the pressure and leakage of the integrated valve for the nitrogen calling, and realize the acquisition and storage of data and the detection functions of stability, accuracy and the like of the test air pressure; the integrated air pressure power system, the pressure regulation test system, the comprehensive performance test system, the electric system, the test record output system and the auxiliary system are integrated, so that the test of the nitrogen calling integrated valve is realized.

Description

System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling
Technical Field
The invention relates to a detection system of a nitrogen-calling integrated valve, in particular to a system and a method for detecting the opening pressure and leakage quantity of the nitrogen-calling integrated valve, and belongs to the technical field of nitrogen-calling integrated valve detection.
Background
Many liquid raw materials, intermediates, finished products and the like in industries such as petroleum, chemical industry, pharmacy and the like are high in volatility, toxic, inflammable and explosive, a nitrogen sealing system is usually arranged on the top of a normal pressure storage tank for storing the liquid, and the nitrogen sealing system mainly comprises a nitrogen sealing valve, a nitrogen leakage valve, a breather valve, an emergency release valve, a flame arrester and the like and is common in use of a nitrogen calling integrated valve at present.
However, the integral valve for nitrogen calling is complex, and an effective means for detecting the integral valve for nitrogen calling is not available, such as detection, data transfer and the like of the integral valve for nitrogen calling cannot be realized, and functions such as air pressure stability and accuracy cannot be tested.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the system and the method for detecting the opening pressure and the leakage quantity of the integral valve for the nitrogen call solve the problems that the integral valve for the nitrogen call cannot be effectively detected and the like.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
the invention provides a system for detecting the opening pressure and leakage quantity of an integral valve for nitrogen calling, which comprises an air compressor, a host end, a first platform and a second platform, wherein,
the air compressor is connected with a first manual valve and a second manual valve;
the first manual valve is sequentially connected with a first regulating valve and a first storage tank through a first filter, wherein,
the first storage tank is communicated with the second electric valve, the third electric valve and the fourth electric valve through the first electric valve;
the second electric valve, the third electric valve and the fourth electric valve are respectively connected with a corresponding first flowmeter, a second flowmeter and a third flowmeter, wherein,
the first, second, and third flow meters are all connected to a needle regulator valve;
the needle regulating valve is connected to the host end,
preferably, the method comprises the steps of,
the host end comprises one of a PC, an industrial personal computer and a singlechip.
As a preferable technical scheme of the invention, the second manual valve is sequentially connected with the second storage tank and the second regulating valve through the second filter, wherein,
the second regulator valve is connected to the first platform through an FT flow transmitter and a sixth electrically operated valve.
As a preferable technical solution of the present invention, the first platform is connected to the second platform, so as to implement circulation of data and the like.
As a preferred embodiment of the present invention, the second stage is connected to the third tank through an eighth electrically operated valve, wherein,
the third storage tank is sequentially connected with a first emptying valve and a second emptying valve.
As a preferable technical scheme of the invention, the second platform is also connected with a ninth electric valve, wherein,
the ninth electrically operated valve is connected to the first pressure sensor, the second pressure sensor and the third pressure sensor;
the first pressure sensor, the second pressure sensor, and the third pressure sensor are connected to the host side.
Preferably, the method comprises the steps of,
the volume flow of the first flowmeter is 50SCCM;
the volume flow of the second flowmeter is 1000SCCM;
the volume flow of the third flowmeter is 200000SCCM, so that detection requirements under different conditions are met.
The invention also provides a method for detecting the opening pressure and leakage amount of the integrated valve for nitrogen calling, which comprises the following steps:
step S1, starting an air compressor to provide continuous and stable pressure for a pipeline;
step S2, filtering the pressure in the step S by a first filter and/or a second filter, and storing the pressure in the first storage tank or the second storage tank;
and S3, detecting the flow and/or the pressure.
Preferably, the flow detection comprises the steps of:
step S31, communicating the gas in the first storage tank to the second electric valve, the third electric valve and the fourth electric valve through the first electric valve;
step S32 of selecting one of the first flow meter, the second flow meter, and the third flow meter through which the gas passes corresponding to the second electric valve, the third electric valve, and the fourth electric valve as needed;
step S33, passing the gas passing through the flowmeter through a needle type regulating valve;
in step S34, the needle type regulating valve is connected to the host end, and the host end obtains the detection data for recording and storing.
Preferably, the pressure detection comprises the steps of:
step S301, sending the gas in the second storage tank to the FT flow transmitter through a second regulating valve;
step S302, the FT flow transmitter sends gas to a first platform through a sixth electric valve;
step S303, the first platform performs various detection, acquires data and stores the data;
step S304, the first platform is connected to the second platform, and the second platform acquires data;
in step S305, the second platform is connected to the third tank through an eighth electrically operated valve, wherein,
the third storage tank is connected to the first pressure sensor, the second pressure sensor and the third pressure sensor through a ninth electric valve, the first pressure sensor, the second pressure sensor and the third pressure sensor transmit pressure information to a host end, and the host end obtains pressure information data and records and stores the data.
The beneficial effects of the invention are as follows: the system can realize the test of the pressure and leakage of the integrated valve for the nitrogen calling, and realize the acquisition and storage of data and the detection functions of stability, accuracy and the like of the test air pressure; the integrated air pressure power system, the pressure regulation test system, the comprehensive performance test system, the electric system, the test record output system and the auxiliary system are integrated, so that the test of the nitrogen calling integrated valve is realized.
Drawings
FIG. 1 is a schematic diagram of a detection system of the present invention;
in the figure: 1. an air compressor; 11. a first manual valve; 12. a second manual valve; 2. a first filter; 02. a second filter; 3. a first regulating valve; 03. a second regulating valve; 4. a first storage tank; 04. a second storage tank; 040. a third tank; 51. a first electrically operated valve; 52. a second electrically operated valve; 53. a third electrically operated valve; 54. a fourth electrically operated valve; 56. a sixth electrically operated valve; 58. an eighth electrically operated valve; 516. a ninth electric valve; 61. a first flowmeter; 62. a second flowmeter; 63. a third flowmeter; 7. a needle type regulating valve; 8. a host end; 9. an FT flow transmitter; 1001. a first drain valve; 1002. a second drain valve; 001. a first platform; 002. a second platform; 100. a first pressure sensor; 200. a second pressure sensor; 300. and a third pressure sensor.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a system for detecting the opening pressure and leakage amount of an integrated valve for nitrogen calling, comprising an air compressor 1, a main unit side 8, a first platform 001 and a second platform 002, wherein,
the air compressor 1 is connected with a first manual valve 11 and a second manual valve 12;
the first manual valve 11 is connected in turn to the first regulating valve 3 and the first tank 4 via the first filter 2, wherein,
the first tank 4 is communicated to the second electric valve 52, the third electric valve 53 and the fourth electric valve 54 through the first electric valve 51;
the second, third and fourth electrically operated valves 52, 53 and 54 are connected with corresponding first, second and third flow meters 61, 62 and 63, respectively, wherein,
the first flow meter 61, the second flow meter 62, and the third flow meter 63 are all connected to the needle regulating valve 7;
the needle type regulating valve 7 is connected to the host end 8, and the host end 8 outputs data to a display device such as a monitor or a remote monitor, so that the display of the data is realized, and the visual observation is convenient.
In this embodiment, the host 8 includes one of a PC, an industrial personal computer, a single-chip microcomputer, etc. for implementing data collection, storage, transmission, display, etc.
The second manual valve 12 is connected in turn to the second reservoir 04 and the second regulating valve 03 via a second filter 02, wherein,
the second regulator valve 03 is connected to the first platform 001 through the FT flow transmitter 9 and the sixth electrically operated valve 56.
The first platform 001 is connected to the second platform 002 for realizing circulation of data and the like.
The second platform 002 is connected to the third storage tank 040 through the eighth electric valve 58, wherein the third storage tank 040 is sequentially connected with the first evacuation valve 1001 and the second evacuation valve 1002, and the gas entering the second platform 002 through the needle type regulating valve 7 can be continuously discharged through the eighth electric valve 58, the third storage tank 040, the first evacuation valve 1001 and the second evacuation valve 1002, so that the regulation of the detection system is realized.
The second platform 002 is further connected with a ninth electrically operated valve 516, wherein the ninth electrically operated valve 516 is connected to the first pressure sensor 100, the second pressure sensor 200 and the third pressure sensor 300, and further, the first pressure sensor 100, the second pressure sensor 200 and the third pressure sensor 300 are connected to the host end 8, and are used for obtaining pressure data by the host end 8, so as to realize pressure detection of the nitrogen calling integrated valve.
In this embodiment, the volume flow of the first flowmeter 61 is 50SCCM, the volume flow of the second flowmeter 62 is 1000SCCM, and the volume flow of the third flowmeter 63 is 200000SCCM, so as to meet the detection requirements under different conditions.
Example 2
The present embodiment provides a method for detecting the opening pressure and leakage amount of an integral valve for nitrogen calling, which is used in the system in embodiment 1, and specifically includes the following steps:
step S1, starting an air compressor 1 to provide continuous and stable pressure for a pipeline;
step S2, filtering the pressure in step S1 by the first filter 2 and/or the second filter 02, and storing the filtered pressure in the first tank 4 or the second tank 04;
and S3, detecting the flow and/or the pressure.
Further, in this embodiment, the flow detection includes the following steps:
step S31 of communicating the gas in the first tank 4 to the second electrically operated valve 52, the third electrically operated valve 53, and the fourth electrically operated valve 54 via the first electrically operated valve 51;
step S32 of selecting one of the first flow meter 61, the second flow meter 62, and the third flow meter 63 corresponding to the second electrically operated valve 52, the third electrically operated valve 53, and the fourth electrically operated valve 54 to pass the gas as needed;
step S33, passing the gas passing through the flowmeter through a needle regulating valve 7;
in step S34, the needle regulating valve 7 is connected to the host 8, and the host 8 obtains the detection data, records and stores the detection data, and specifically, the host 8 outputs the data to a display device such as a monitor or a remote monitor, so as to realize the display of the data, and facilitate the visual observation.
Further, performing the pressure detection includes the steps of:
step S301, sending the gas in the second storage tank 04 to the FT flow transmitter 9 via the second regulating valve 03;
step S302, FT flow transmitter 9 sends gas to first platform 001 through sixth electrically operated valve 56;
step S303, the first platform 001 performs various detection, obtains data and stores the data;
step S304, the first platform 001 is connected to the second platform 002, and the second platform 002 acquires data;
in step S305, the second platform 002 is connected to the third reservoir 040 through the eighth electrically operated valve 58, wherein,
the third storage tank 040 is connected to the first pressure sensor 100, the second pressure sensor 200 and the third pressure sensor 300 through the ninth electric valve 516, the first pressure sensor 100, the second pressure sensor 200 and the third pressure sensor 300 transmit pressure information to the host end 8, the host end 8 obtains pressure information data and records and stores the data, the host end 8 forms an effective fluctuation picture and displays, and the nitrogen calling integrated valve actuation test is completed.
In examples 1 and 2, the first platform 001 is preferably a To GU nitrogen seal valve dedicated detection platform, the second platform 002 is preferably a To BV/KB detection platform,
in particular, the method comprises the steps of,
a nitrogen seal valve detection platform (TO GU product test platform),
the product testing platform has high accuracy and stability, and can perform independent single-station measurement and simultaneous online measurement of any two combinations for the integral type nitrogen calling integrated valve with nitrogen adding and pressure regulating functions within the caliber of DN50-DN100, and the nitrogen sealing valve can be assembled on the platform in a clamp fixing mode, so that the interference performance of the nitrogen sealing valve can be verified. Therefore, in the interference test of the invention, a product test platform can be arranged corresponding to one nitrogen seal valve, or the nitrogen seal valve and the respiratory valve are respectively provided with one product test platform;
the To BV/KB detection platform,
the product testing platform has high accuracy and stability, and can perform independent single-station measurement and simultaneous online measurement of any two combinations on the respiratory valve (including the integral respiratory valve with nitrogen addition and pressure regulation in DN50-DN100 caliber) within DN50-DN350 caliber, and the respiratory valve can be assembled on the platform in a clamp fixing mode, so that the interference can be verified. Therefore, in the interference test of the invention, a product test platform can be arranged corresponding to one breather valve/nitrogen-breathing integrated valve, or two breather valves/nitrogen-breathing integrated valves are respectively provided with one product test platform.
The system can realize the test of the pressure and leakage of the integrated valve for the nitrogen calling, and realize the acquisition and storage of data and the detection functions of stability, accuracy and the like of the test air pressure; the air pressure power system, the pressure regulation test system, the comprehensive performance test system, the electric system, the test record output system and the auxiliary system are integrated into a whole, so that the test of the nitrogen calling integrated valve is realized; the compressed air output by the detection device and the compressor is rectified through the pressure storage tank, so that the fluctuation of air pressure can be greatly overcome, and the stability of the test air pressure is ensured; the integration level of the electric system, the air compression system, the metering system, the test record output system and the pipeline system is high, so that high accuracy and stability are ensured; the pipeline and the equipment parts can be flexibly switched for use by controlling the pipeline flow channel through which the test air pressure passes according to different test requirements, so that the test requirements under various different conditions can be met, the operation is convenient and fast, and the functions are powerful.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, but is capable of numerous variations and modifications without departing from the spirit and scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A system for detecting the opening pressure and leakage amount of a nitrogen calling integrated valve is characterized by comprising an air compressor (1), a host end (8), a first platform (001) and a second platform (002), wherein,
the air compressor (1) is connected with a first manual valve (11) and a second manual valve (12);
the first manual valve (11) is sequentially connected with the first regulating valve (3) and the first storage tank (4) through the first filter (2), wherein,
the first storage tank (4) is communicated with the second electric valve (52), the third electric valve (53) and the fourth electric valve (54) through the first electric valve (51);
the second electric valve (52), the third electric valve (53) and the fourth electric valve (54) are respectively connected with a corresponding first flowmeter (61), a second flowmeter (62) and a third flowmeter (63), wherein,
-the first, second and third flow meters (61, 62, 63) are each connected to a needle regulating valve (7);
the needle regulating valve (7) is connected to the host end (8).
2. The system for detecting the opening pressure and the leakage amount of an integrated valve for nitrogen calling according to claim 1, wherein the second manual valve (12) is connected in sequence to a second tank (04) and a second regulating valve (03) through a second filter (02), wherein,
the second regulating valve (03) is connected to the first platform (001) through an FT flow transmitter (9) and a sixth electrically operated valve (56).
3. A system for detecting an integrated valve opening pressure and leak as defined in claim 2 wherein the first platform (001) is connected to the second platform (002).
4. A system for detecting the opening pressure and the leakage amount of an integrated valve for nitrogen call according to claim 3, wherein said second stage (002) is connected to a third tank (040) through an eighth electrically operated valve (58), wherein,
the third storage tank (040) is sequentially connected with a first emptying valve (1001) and a second emptying valve (1002).
5. The system for detecting an opening pressure and a leakage amount of an integrated valve for nitrogen call according to claim 4, wherein a ninth electrically operated valve (516) is further connected to the second stage (002), wherein,
the ninth electrically operated valve (516) is connected to the first pressure sensor (100), the second pressure sensor (200) and the third pressure sensor (300);
the first pressure sensor (100), the second pressure sensor (200) and the third pressure sensor (300) are connected to the host side (8).
6. A system for detecting an integrated valve opening pressure and leak as defined in claim 1, wherein the host side (8) comprises a PC.
7. A system for detecting an integrated valve opening pressure and leak as defined in claim 1, wherein,
the volume flow of the first flowmeter (61) is 50SCCM;
the volume flow of the second flowmeter (62) is 1000SCCM;
the volume flow of the third flowmeter (63) is 200000SCCM.
8. A method for detecting the opening pressure and the leakage amount of the integral valve for nitrogen, applied to a system for detecting the opening pressure and the leakage amount of the integral valve for nitrogen according to any one of claims 1 to 8, characterized by comprising the steps of:
step S1, starting an air compressor (1) to provide continuous and stable pressure for a pipeline;
step S2, filtering the pressure in the step S1 by a first filter (2) and/or a second filter (02), and storing the pressure in a first storage tank (4) or a second storage tank (04);
and S3, detecting the flow and/or the pressure.
9. The method for detecting the opening pressure and the leakage amount of the integrated valve for nitrogen call according to claim 8, wherein the flow rate detection comprises the steps of:
step S31, communicating the gas in the first storage tank (4) to the second electric valve (52), the third electric valve (53) and the fourth electric valve (54) through the first electric valve (51);
step S32 of selecting one of the first flow meter (61), the second flow meter (62) and the third flow meter (63) corresponding to a second electric valve (52), a third electric valve (53) and a fourth electric valve (54) to pass gas as required;
step S33, passing the gas passing through the flowmeter through a needle type regulating valve (7);
in step S34, the needle regulating valve (7) is connected to the host end (8), and the host end (8) obtains the detection data for recording and storing.
10. The method for detecting the opening pressure and the leakage amount of the integrated valve for nitrogen call according to claim 8, wherein the pressure detection comprises the steps of:
step S301, sending the gas in the second storage tank (04) to the FT flow transmitter (9) through a second regulating valve (03);
step S302, the FT flow transmitter (9) sends the gas to the first platform (001) through a sixth electric valve (56);
step S303, the first platform (001) performs various detection, acquires data and stores the data;
step S304, the first platform (001) is connected to the second platform (002), and the second platform (002) acquires data;
in step S305, the second platform (002) is connected to the third tank (040) through the eighth electrically operated valve (58), wherein,
the third storage tank (040) is connected to the first pressure sensor (100), the second pressure sensor (200) and the third pressure sensor (300) through a ninth electric valve (516), the first pressure sensor (100), the second pressure sensor (200) and the third pressure sensor (300) transmit pressure information to the host end (8), and the host end (8) obtains pressure information data and records and stores the data.
CN202211737744.2A 2022-12-30 2022-12-30 System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling Pending CN116086731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211737744.2A CN116086731A (en) 2022-12-30 2022-12-30 System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211737744.2A CN116086731A (en) 2022-12-30 2022-12-30 System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling

Publications (1)

Publication Number Publication Date
CN116086731A true CN116086731A (en) 2023-05-09

Family

ID=86207657

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211737744.2A Pending CN116086731A (en) 2022-12-30 2022-12-30 System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling

Country Status (1)

Country Link
CN (1) CN116086731A (en)

Similar Documents

Publication Publication Date Title
CN201867290U (en) Air tightness testing device for automobile air-conditioning box
CN202471374U (en) Multifunctional airtightness detection apparatus
CN201173840Y (en) Portable split AC and DC dual-purpose respiring valve positive and negative pressure tester
CN109073089A (en) The system and method for predictive diagnosis for mechanical system
CN109000859B (en) Air tightness testing system and method
CN100585359C (en) Gas pressure regulator test device
CN200976004Y (en) Device for calibrating burnable and easily-explosive harmful gas detection alarm
CN112903519A (en) System and method for rapidly measuring and calculating desorption amount of coal bed gas
CN201697907U (en) Checking apparatus of SF 6 gas leakage monitoring alarm
CN116086731A (en) System and method for detecting opening pressure and leakage quantity of integrated valve for nitrogen calling
CN113390626B (en) Micro-flow pump valve device testing system and testing method
CN206945234U (en) A kind of new device for gas pressure regulating station air-leakage test
CN201000341Y (en) Adjustable constant voltage precision air source device
CN201025464Y (en) Automatic testing device for respiratory secure valve performance
CN108916017A (en) A kind of turbine Cargo Oil Pump fault diagnosis system peculiar to vessel
CN210348269U (en) Gas pressure regulating station voltage regulator diagnostic device
CN206930442U (en) Gas pressure regulator, governor pressure test device
CN212568671U (en) Portable oxygen cabin pressure governing system pressure medium quality detector
CN210626039U (en) Breather valve capability test system
CN209858151U (en) Gas leakage detection device
CN206930501U (en) A kind of compressed air ingredient analysis sampling apparatus
CN109139526B (en) Method and device for detecting sealing performance of dry gas seal on two end faces of centrifugal compressor
CN212693776U (en) Oil gas recovery detection device
US20230015376A1 (en) Capture Control Automated Testing
CN215261861U (en) Sample monitoring system with visual self-diagnosis function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination