CN107676625B - Oxygen cylinder regulator low pressure testboard - Google Patents
Oxygen cylinder regulator low pressure testboard Download PDFInfo
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- CN107676625B CN107676625B CN201711086420.6A CN201711086420A CN107676625B CN 107676625 B CN107676625 B CN 107676625B CN 201711086420 A CN201711086420 A CN 201711086420A CN 107676625 B CN107676625 B CN 107676625B
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- air inlet
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000001301 oxygen Substances 0.000 title claims abstract description 66
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 66
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims description 77
- 230000001105 regulatory effect Effects 0.000 claims description 63
- 239000012535 impurity Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 5
- 238000011056 performance test Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an oxygen bottle regulator low-pressure test board, which comprises an air source inlet X5, a vacuum source inlet X6 and an exhaust port X7, wherein the air source inlet X5 is connected with a first branch and a second branch, the output end of the first branch and the output end of the second branch are respectively provided with a tested piece air inlet interface X1 and a tested piece air inlet interface X2, the vacuum source inlet X6 is connected with a third branch, the output end of the third branch is provided with a tested piece air inlet interface X3, the exhaust port X7 is connected with an output branch, the input end of the output branch is provided with a tested piece air outlet interface X4, the tested piece air inlet interface X1, the tested piece air inlet interface X2 and the tested piece air inlet interface X3 are respectively connected with the air inlet end of a tested piece, and the tested piece air outlet interface X4 is connected with the air outlet end of the tested piece. The invention is a special test bench, which can independently regulate the on-off control valve of the oxygen cylinder regulator, observe the flow and pressure on the meter head on the panel of the shell, and effectively complete the performance test of various oxygen cylinder regulators.
Description
Technical Field
The invention relates to the technical field of pressure and flow test equipment, in particular to a low-pressure test board of an oxygen cylinder regulator.
Background
Currently, regulators are widely used in gas delivery pipelines, and the main function is to regulate the upstream higher inlet pressure to the downstream outlet pressure, so as to ensure the downstream output pressure to be stable. The oxygen bottle is generally used in medicine and chemical industry, and the safety possibility of the performance of the oxygen bottle regulator not only affects the quality of gas delivery, but also directly affects the life safety and industrial manufacturing safety, so that the performance of the oxygen pressure regulating bottle needs to be specially detected before use. In the prior art, the oxygen cylinder regulator mainly reduces the gas pressure to a safe range, and the performance of the oxygen cylinder regulator is accurate or not, special test equipment is lacked, the output gas pressure of the oxygen cylinder regulator cannot be accurately regulated, and the performance of each control valve on the oxygen cylinder regulator is detected.
Disclosure of Invention
The invention aims to provide a low-pressure test bench special for testing oxygen cylinder regulators, wherein the types of the oxygen cylinder regulators are P/N:4441009-XX, 8013207-XX, 807434/9700/9800XX, 5500-5600XXX and 3552XX respectively, and the low-pressure test bench is used for solving the problems that the oxygen regulator in the prior art cannot accurately regulate the output gas pressure and cannot detect the performance of a control valve.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
the utility model provides an oxygen bottle regulator low pressure testboard, includes air supply entry X5, vacuum source entry X6 and gas vent X7, air supply entry X5 is connected with first branch road and the second branch road that are used for respectively providing different pressure gases for the measured piece, the output of first branch road and the output of second branch road are provided with measured piece air inlet port X1 and measured piece air inlet port X2 respectively, vacuum source entry X6 is connected with the third branch road that is used for providing the vacuum source for the measured piece, the output of third branch road is provided with measured piece air inlet port X3, gas vent X7 is connected with the output branch road, the input of output branch road is provided with measured piece air outlet port X4, measured piece air inlet port X1, measured piece air inlet port X2 and measured piece air inlet port X3 are connected the air inlet end of measured piece respectively, measured piece air outlet port X4 is connected with the air outlet end of measured piece.
Working principle:
the oxygen cylinder regulator test board comprises test bench internal pipeline components and parts, shell and U type manometer, when the test oxygen cylinder regulator is the measured piece, with three interfaces of the inlet end of oxygen cylinder regulator by measured piece air inlet interface X1 respectively, by measured piece air inlet interface X2 and by measured piece air inlet interface X3 sealing connection, with the end of giving vent to anger of oxygen cylinder regulator with by measured piece air outlet interface X4 sealing connection. The test bench supplies air to the oxygen cylinder regulator in three ways, the first way of air enters the first branch from the air source inlet X5, the control button on the first branch is regulated to decompress the pressure of the input air to a first set pressure value, and then the pressure value is input to the air inlet end of the oxygen cylinder regulator through the air inlet interface X1 of the tested piece, and the first branch is provided with a pressure gauge PP1 for pressure display; the second path of gas enters the second branch from the gas source inlet X5, a control button in the second branch is regulated, the pressure of the input gas is reduced to a second set pressure value, and then the gas is input into the gas inlet end of the oxygen cylinder regulator through the gas inlet interface X2 of the tested piece, and a pressure gauge PP2 for displaying the pressure of the gas and FM1 for displaying the flow of the gas are arranged on the second branch; the third path of gas enters the third branch from the vacuum source inlet X6, a control button in the third branch is regulated, the pressure of the input gas is reduced and then is input into the air inlet end of the oxygen cylinder regulator, and a pressure gauge PP3 and a flow gauge FM2 are arranged on the third branch. The air outlet end of the oxygen regulator is connected with an air outlet interface X4 of the measured piece, the air outlet interface of the measured piece is connected with an output branch, and the output branch is used for regulating the flow value and the pressure value of the output gas of the oxygen cylinder regulator through a control button and detecting the performance of a control valve on the oxygen cylinder regulator at the moment. The first branch and the second branch can be tested simultaneously or respectively. The test bench is connected with the oxygen cylinder regulator to be tested, when the pressure gauge and the flow value of each branch are manually and independently regulated, the performances of the oxygen cylinder regulator in different gas pressures and gas flows are observed, and the data displayed by the oxygen cylinder regulator are compared with the data displayed by the test bench through regulating the buttons on the oxygen cylinder regulator, so that the performances of the oxygen cylinder regulator such as sensitivity, errors and the like can be detected.
Further, a filter M2 for filtering gas impurities is further connected between the gas source inlet X5 and the first and second branches.
Working principle:
and a filter M2 is connected between the air source inlet X5 and the first branch and the second branch, and impurity filtering is carried out on the air entering the first branch and the second branch, so that impurity blocking and display accuracy of the image pressure gauge are avoided.
Further, the first branch includes a main pipeline input pressure regulating relief valve V1 connected with the filter M2, the main pipeline input pressure regulating relief valve V1 is connected with a first end of a main pipeline input regulating needle valve K1, a pressure gauge PP1 is connected between the main pipeline input pressure regulating relief valve V1 and the first end of the main pipeline input regulating needle valve K1, a second end of the main pipeline input regulating needle valve K1 is connected with the air inlet interface X1 of the tested piece, and a main pipeline bypass output shutoff valve K2 is connected between the second end of the main pipeline input regulating needle valve K1 and the air inlet interface X1 of the tested piece.
Working principle:
after the gas passes through the filter M2 from the gas source inlet X5 and filters impurities, the pressure of the input gas source is reduced to a stable pressure by the main pipeline input pressure regulating reducing valve V1 on the first branch, the main pipeline input regulating needle valve K1 is opened to input the gas into the oxygen cylinder regulator, the pressure of the gas is displayed by the pressure gauge PP1, when the pressure is larger than a set value, the gas is decompressed by the main pipeline bypass output shutoff valve K2, the valve inner piece is jacked up to release the pressure in time, the pressure is reduced and then restored to the original position, and the low pressure and pressure stabilization of the pressure of the first branch are ensured.
Further, the second branch includes a main pipeline input pressure regulating and reducing valve V2 connected with the filter M2, the main pipeline input pressure regulating and reducing valve V2 is connected with a first end of a main pipeline input regulating needle valve K3, a second end of the main pipeline input regulating needle valve K3 is connected with a main pipe bypass output shutoff valve K4, a pressure gauge PP2 and a first end of a flow meter FM1, and a second end of the flow meter FM1 is connected with the air inlet interface X2 of the tested piece.
Working principle:
after the gas is input into the pressure regulating and reducing valve V2 through the main pipeline, the gas with high pressure is low-pressure and stable, the main pipeline input regulating needle valve K3 is opened to input the gas into the oxygen bottle regulator, the pressure and the flow of the gas are displayed through the pressure gauge PP2 and the flow gauge FM1, and when the pressure is larger than a set value, the main pipeline bypass output shutoff valve K4 is used for decompressing the gas.
Further, the third branch comprises a main pipe output shutoff valve K6 connected with the vacuum source inlet X6, the main pipe output shutoff valve K6 is connected with a main pipe bypass output adjusting needle valve K7, a pressure gauge PP3 and a first end of a flow gauge FM2, and a second end of the flow gauge FM2 is connected with a tested piece air inlet interface X3.
Working principle:
the vacuum source inlet X6 is connected with the input end of the third branch after being connected with the vacuum pump, the third branch is opened to be in charge of outputting the shutoff valve K6, a vacuum test source is provided, the pressure gauge PP3 and the flow gauge FM2 display the pressure and the flow of the third branch, and the main pipe bypass outputs and adjusts the needle valve K7 to release the pressure of the gas.
Further, the output branch is used for adjusting the first output branch, the second output branch and the third output branch of flow output respectively, be connected with the main pipe bypass output between first output branch, the second output branch and the third output branch with the tested piece outlet port X4 and adjust needle valve K8 and main pipe bypass output and adjust needle valve K5, main pipe bypass output adjusts needle valve K5 and is connected with manometer PP4, the output of first output branch, second output branch and third output branch is connected with gas vent X7.
Working principle:
the tested piece air outlet interface X4 of the output branch is connected with the air outlet end of the oxygen bottle regulator, and the output branch comprises three branches for regulating different gas flows: the device comprises a first output branch, a second output branch and a third output branch, wherein a main pipe bypass output adjusting needle valve K8, a main pipe bypass output adjusting needle valve K5 and a pressure gauge PP4 which are used for pressure relief are connected between an air outlet interface X4 of a tested piece and the three branches, and flow adjustment of the three branches is connected to an air outlet X7. The three branches can respectively regulate the gas flow and monitor the gas flow by using the flowmeter, so that the test environment of different gas flows in the detection of the oxygen cylinder regulator is provided, and the detection range is more comprehensive.
Further, the first output branch comprises a main pipeline output switch valve K9 and a flow meter FM3 which are connected in series.
The main pipeline output switch valve K9 is used for adjusting the flow meter FM3 with the measuring range of 5-50 ML/Min.
Further, the second output branch comprises a main pipeline output switch valve K10 and a flow meter FM4 which are connected in series.
Working principle:
the main pipeline output switch valve K10 is used for adjusting the flow meter FM4 with the measuring range of 0.62-6.2L/Min.
Further, the third output branch comprises a main pipeline output switch valve K11 and a flow meter FM5 which are connected in series.
Working principle:
the main pipeline output switch valve K11 is used for adjusting the flow meter FM5 with the measuring range of 12.6-126L/Min.
Compared with the prior art, the invention has the following advantages:
(1) The invention relates to a special test board for an oxygen cylinder regulator, which is used for controlling the flow and the pressure of an air source, providing a flowmeter and a pressure meter for displaying the flow and the pressure of air, operating various control switch valves on the test board by operators, observing the flow and the pressure on a meter head on a shell panel, and effectively completing the performance test of various oxygen cylinder regulators.
(2) The invention is connected with the oxygen cylinder regulator to be tested, when the pressure gauge and the flow value of each branch are manually and independently regulated, the performances of the oxygen cylinder regulator under different gas pressures and gas flows are observed, and the data displayed by the oxygen cylinder regulator is compared with the data displayed by the test bench by regulating the buttons on the oxygen cylinder regulator, so that the performances of the oxygen cylinder regulator such as sensitivity, errors and the like can be detected.
Drawings
FIG. 1 is a front view of the present invention;
fig. 2 is a schematic diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1 and 2, the low-pressure test bench of the oxygen cylinder regulator comprises an air source inlet X5, a vacuum source inlet X6 and an exhaust port X7, wherein the air source inlet X5 is connected with a first branch and a second branch which are respectively used for providing different pressure gases for a tested piece, the output end of the first branch and the output end of the second branch are respectively provided with a tested piece air inlet interface X1 and a tested piece air inlet interface X2, the vacuum source inlet X6 is connected with a third branch which is used for providing a vacuum source for the tested piece, the output end of the third branch is provided with a tested piece air inlet interface X3, the exhaust port X7 is connected with an output branch, the input end of the output branch is provided with a tested piece air outlet interface X4, the tested piece air inlet interface X1, the tested piece air inlet interface X2 and the tested piece air inlet interface X3 are respectively connected with the air inlet end of the tested piece, and the tested piece air outlet interface X4 is connected with the air outlet end of the tested piece.
Working principle:
the oxygen cylinder regulator test board comprises test bench internal pipeline components and parts, shell and U type manometer, when the test oxygen cylinder regulator is the measured piece, with three interfaces of the inlet end of oxygen cylinder regulator by measured piece air inlet interface X1 respectively, by measured piece air inlet interface X2 and by measured piece air inlet interface X3 sealing connection, with the end of giving vent to anger of oxygen cylinder regulator with by measured piece air outlet interface X4 sealing connection. The test bench supplies air to the oxygen cylinder regulator in three ways, the first way of air enters the first branch from the air source inlet X5, the control button on the first branch is regulated to decompress the pressure of the input air to a first set pressure value, and then the pressure value is input to the air inlet end of the oxygen cylinder regulator through the air inlet interface X1 of the tested piece, and the first branch is provided with a pressure gauge PP1 for pressure display; the second path of gas enters the second branch from the gas source inlet X5, a control button in the second branch is regulated, the pressure of the input gas is reduced to a second set pressure value, and then the gas is input into the gas inlet end of the oxygen cylinder regulator through the gas inlet interface X2 of the tested piece, and a pressure gauge PP2 for displaying the pressure of the gas and FM1 for displaying the flow of the gas are arranged on the second branch; the third path of gas enters the third branch from the vacuum source inlet X6, a control button in the third branch is regulated, the pressure of the input gas is reduced and then is input into the air inlet end of the oxygen cylinder regulator, and a pressure gauge PP3 and a flow gauge FM2 are arranged on the third branch. The air outlet end of the oxygen regulator is connected with an air outlet interface X4 of the measured piece, the air outlet interface of the measured piece is connected with an output branch, and the output branch is used for regulating the flow value and the pressure value of the output gas of the oxygen cylinder regulator through a control button and detecting the performance of a control valve on the oxygen cylinder regulator at the moment. The first branch and the second branch can be tested simultaneously or respectively. The test bench is connected with the oxygen cylinder regulator to be tested, when the pressure gauge and the flow value of each branch are manually and independently regulated, the performances of the oxygen cylinder regulator in different gas pressures and gas flows are observed, and the data displayed by the oxygen cylinder regulator are compared with the data displayed by the test bench through regulating the buttons on the oxygen cylinder regulator, so that the performances of the oxygen cylinder regulator such as sensitivity, errors and the like can be detected.
Example 2:
on the basis of embodiment 1, as shown in fig. 1 and 2, a filter M2 for filtering gas impurities is further connected between the gas source inlet X5 and the first and second branches.
Working principle:
and a filter M2 is connected between the air source inlet X5 and the first branch and the second branch, and impurity filtering is carried out on the air entering the first branch and the second branch, so that impurity blocking and display accuracy of the image pressure gauge are avoided.
Example 3:
on the basis of embodiment 2, referring to fig. 1 and 2, the first branch includes a main pipeline input pressure regulating relief valve V1 connected with the filter M2, the main pipeline input pressure regulating relief valve V1 is connected with a first end of a main pipeline input regulating needle valve K1, a pressure gauge PP1 is connected between the main pipeline input pressure regulating relief valve V1 and the first end of the main pipeline input regulating needle valve K1, a second end of the main pipeline input regulating needle valve K1 is connected with the air inlet port X1 of the tested member, and a main pipeline bypass output shutoff valve K2 is connected between a second end of the main pipeline input regulating needle valve K1 and the air inlet port X1 of the tested member.
Working principle:
after the gas passes through the filter M2 from the gas source inlet X5 and filters impurities, the pressure of the input gas source is reduced to a stable pressure by the main pipeline input pressure regulating reducing valve V1 on the first branch, the main pipeline input regulating needle valve K1 is opened to input the gas into the oxygen cylinder regulator, the pressure of the gas is displayed by the pressure gauge PP1, when the pressure is larger than a set value, the gas is decompressed by the main pipeline bypass output shutoff valve K2, the valve inner piece is jacked up to release the pressure in time, the pressure is reduced and then restored to the original position, and the low pressure and pressure stabilization of the pressure of the first branch are ensured.
Further, the second branch includes a main pipeline input pressure regulating and reducing valve V2 connected with the filter M2, the main pipeline input pressure regulating and reducing valve V2 is connected with a first end of a main pipeline input regulating needle valve K3, a second end of the main pipeline input regulating needle valve K3 is connected with a main pipe bypass output shutoff valve K4, a pressure gauge PP2 and a first end of a flow meter FM1, and a second end of the flow meter FM1 is connected with the air inlet interface X2 of the tested piece.
Working principle:
after the gas is input into the pressure regulating and reducing valve V2 through the main pipeline, the gas with high pressure is low-pressure and stable, the main pipeline input regulating needle valve K3 is opened to input the gas into the oxygen bottle regulator, the pressure and the flow of the gas are displayed through the pressure gauge PP2 and the flow gauge FM1, and when the pressure is larger than a set value, the main pipeline bypass output shutoff valve K4 is used for decompressing the gas.
Further, the third branch comprises a main pipe output shutoff valve K6 connected with the vacuum source inlet X6, the main pipe output shutoff valve K6 is connected with a main pipe bypass output adjusting needle valve K7, a pressure gauge PP3 and a first end of a flow gauge FM2, and a second end of the flow gauge FM2 is connected with a tested piece air inlet interface X3.
Working principle:
the vacuum source inlet X6 is connected with the input end of the third branch after being connected with the vacuum pump, the third branch is opened to be in charge of outputting the shutoff valve K6, a vacuum test source is provided, the pressure gauge PP3 and the flow gauge FM2 display the pressure and the flow of the third branch, and the main pipe bypass outputs and adjusts the needle valve K7 to release the pressure of the gas.
Example 4:
on the basis of embodiment 3, referring to fig. 1 and 2, the output branches are used for respectively adjusting a first output branch, a second output branch and a third output branch of flow output, the input ends of the first output branch, the second output branch and the third output branch are connected with a main pipe bypass output adjusting needle valve K8 and a main pipe bypass output adjusting needle valve K5 between the tested piece air outlet interface X4, the main pipe bypass output adjusting needle valve K5 is connected with a pressure gauge PP4, and the output ends of the first output branch, the second output branch and the third output branch are connected with an air outlet X7.
Working principle:
the tested piece air outlet interface X4 of the output branch is connected with the air outlet end of the oxygen bottle regulator, and the output branch comprises three branches for regulating different gas flows: the device comprises a first output branch, a second output branch and a third output branch, wherein a main pipe bypass output adjusting needle valve K8, a main pipe bypass output adjusting needle valve K5 and a pressure gauge PP4 which are used for pressure relief are connected between an air outlet interface X4 of a tested piece and the three branches, and flow adjustment of the three branches is connected to an air outlet X7. The three branches can respectively regulate the gas flow and monitor the gas flow by using the flowmeter, so that the test environment of different gas flows in the detection of the oxygen cylinder regulator is provided, and the detection range is more comprehensive.
Further, the first output branch comprises a main pipeline output switch valve K9 and a flow meter FM3 which are connected in series, the second output branch comprises a main pipeline output switch valve K10 and a flow meter FM4 which are connected in series, and the third output branch comprises a main pipeline output switch valve K11 and a flow meter FM5 which are connected in series.
The main pipeline output switch valve K9 is used for adjusting the flow meter FM3 with the measuring range of 5-50ML/Min, the main pipeline output switch valve K10 is used for adjusting the flow meter FM4 with the measuring range of 0.62-6.2L/Min, and the main pipeline output switch valve K11 is used for adjusting the flow meter FM5 with the measuring range of 12.6-126L/Min.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (1)
1. The low-pressure test bench of the oxygen cylinder regulator comprises an air source inlet X5, a vacuum source inlet X6 and an exhaust port X7, and is characterized in that the air source inlet X5 is connected with a first branch and a second branch which are respectively used for providing different pressure gases for a tested piece, the output end of the first branch and the output end of the second branch are respectively provided with a tested piece air inlet interface X1 and a tested piece air inlet interface X2, the vacuum source inlet X6 is connected with a third branch which is used for providing a vacuum source for the tested piece, the output end of the third branch is provided with a tested piece air inlet interface X3, the exhaust port X7 is connected with an output branch, the input end of the output branch is provided with a tested piece air outlet interface X4, the tested piece air inlet interface X1, the tested piece air inlet interface X2 and the tested piece air inlet interface X3 are respectively connected with the air inlet end of the tested piece, and the tested piece air outlet interface X4 is connected with the air outlet end of the tested piece;
the output branch is used for respectively regulating a first output branch, a second output branch and a third output branch of flow output, a main pipe bypass output regulating needle valve K8 and a main pipe bypass output regulating needle valve K5 are connected between the input ends of the first output branch, the second output branch and the third output branch and the tested piece air outlet interface X4, the main pipe bypass output regulating needle valve K5 is connected with a pressure gauge PP4, and the output ends of the first output branch, the second output branch and the third output branch are connected with an exhaust port X7;
the first output branch comprises a main pipeline output switch valve K9 and a flowmeter FM3 which are connected in series; the second output branch comprises a main pipeline output switch valve K10 and a flowmeter FM4 which are connected in series; the third output branch comprises a main pipeline output switch valve K11 and a flowmeter FM5 which are connected in series;
a filter M2 for filtering gas impurities is also connected between the gas source inlet X5 and the first branch and the second branch;
the first branch comprises a main pipeline input pressure regulating and reducing valve V1 connected with the filter M2, the main pipeline input pressure regulating and reducing valve V1 is connected with a first end of a main pipeline input regulating needle valve K1, a pressure gauge PP1 is connected between the main pipeline input pressure regulating and reducing valve V1 and the first end of the main pipeline input regulating needle valve K1, a second end of the main pipeline input regulating needle valve K1 is connected with an air inlet interface X1 of a tested piece, and a main pipeline bypass output shutoff valve K2 is connected between the second end of the main pipeline input regulating needle valve K1 and the air inlet interface X1 of the tested piece;
the second branch comprises a main pipeline input pressure regulating and reducing valve V2 connected with the filter M2, the main pipeline input pressure regulating and reducing valve V2 is connected with a first end of a main pipeline input regulating needle valve K3, a second end of the main pipeline input regulating needle valve K3 is connected with a main pipeline bypass output shutoff valve K4, a pressure gauge PP2 and a first end of a flow gauge FM1, and a second end of the flow gauge FM1 is connected with an air inlet interface X2 of the tested piece;
the third branch comprises a main pipe output shutoff valve K6 connected with the vacuum source inlet X6, the main pipe output shutoff valve K6 is connected with a main pipe bypass output adjusting needle valve K7, a pressure gauge PP3 and a first end of a flow gauge FM2, and a second end of the flow gauge FM2 is connected with a tested piece air inlet interface X3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711086420.6A CN107676625B (en) | 2017-11-07 | 2017-11-07 | Oxygen cylinder regulator low pressure testboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711086420.6A CN107676625B (en) | 2017-11-07 | 2017-11-07 | Oxygen cylinder regulator low pressure testboard |
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| CN107676625A CN107676625A (en) | 2018-02-09 |
| CN107676625B true CN107676625B (en) | 2023-07-21 |
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| CN112577769B (en) * | 2020-12-15 | 2024-09-17 | 北京派瑞华氢能源科技有限公司 | Hydrogen filling simulation test system |
| CN113252291B (en) * | 2021-07-15 | 2021-10-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel air supply system and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9515849D0 (en) * | 1995-08-02 | 1995-10-04 | British Gas Plc | Apparatus and method for use in testing gas pressure reduction equipment |
| CN101470050B (en) * | 2007-12-29 | 2012-10-31 | 北京谊安医疗系统股份有限公司 | Integrated measuring instrument |
| CN201637567U (en) * | 2010-03-18 | 2010-11-17 | 上海航新航宇机械技术有限公司 | Testing device for civil airplane pneumatic accessories |
| CN102564791B (en) * | 2011-12-29 | 2014-12-17 | 姚克农 | Pressure regulating property testing system of gas pressure regulator |
| CN204612907U (en) * | 2015-04-08 | 2015-09-02 | 南京王行航空附件维修工程有限公司 | A kind of aircraft Pneumatic high-altitude annex proving installation |
| CN207378493U (en) * | 2017-11-07 | 2018-05-18 | 四川奥特附件维修有限责任公司 | A kind of oxygen cylinder adjuster low voltage experiment platform |
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