CN201331413Y - Gaseous medium manometer alternating load testing device - Google Patents
Gaseous medium manometer alternating load testing device Download PDFInfo
- Publication number
- CN201331413Y CN201331413Y CNU2008202331460U CN200820233146U CN201331413Y CN 201331413 Y CN201331413 Y CN 201331413Y CN U2008202331460 U CNU2008202331460 U CN U2008202331460U CN 200820233146 U CN200820233146 U CN 200820233146U CN 201331413 Y CN201331413 Y CN 201331413Y
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- alternation
- vapour lock
- manometer
- gas
- nozzle
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Abstract
The utility model provides a gaseous medium manometer alternating load testing device, belonging to the field of manometer alternate charge testing. The device comprises a buffering chamber and a manometer interface connected with the buffering chamber, and also comprises gas sources and an alternating gas lock generating system which are respectively connected with the buffering chamber. The device takes gas as a medium to realize the alternating load testing of the manometer, completely solves all problems generated by using liquid as the medium, can realize negative pressure test, can also well realize the testing process in the case of low testing pressure, does not generate pollution and is environment-friendly. Meanwhile, the device also realizes the alternating load testing of a vacuum manometer and has a good generalization and application value.
Description
Technical field
The utility model relates to manometer stress alternation test field, specifically is a kind of gas medium pressure table stress alternation test unit.
Background technology
The stress alternation test is a leading indicator estimating flexible type manometer Performance And Reliability.In general, its test method is: make tensimeter bear the specific amplitude (by the correlation technique standard code) of certain number of times, the alternating pressure that frequency is 60 times/minute, and then detect tested manometric metering performance by the requirement of correlation technique standard and measurement verification regulations.
Existing test unit all is to adopt liquid as medium, i.e. full of liquid actuating medium (being generally hydraulic oil) in an airtight container, this closed container is linked to each other with a piston system, make piston with 60 times/minute frequency movement, thereby the compression work medium produces sinusoidal pressure.Adopt liquid significant limitation to be arranged as the test method of medium, as follows:
1. to measuring the less tensimeter of the upper limit, the actuating medium of test back Measuring and testing should be gas, and the liquid-working-medium that the alternation load change test is used easy-clear not, for follow-up work is made troubles.
2. can't realize the negative pressure test.
3. at test pressure hour, throw of poston is difficult for regulating.
4. use hydraulic oil as medium, be unfavorable for keeping the working environment cleaning, may cause environmental pollution, do not meet environmental requirement.
Summary of the invention
The purpose of this utility model is exactly at above-mentioned deficiency, and the novel tensimeter stress alternation test unit of a kind of simple in structure, employing gas of being easy to realize as medium is provided.
A kind of gas medium pressure table stress alternation test unit, be applied to the stress alternation test of various manometers, pressure unit, pressure transducer, for example general purpose pressure gauge GB/T1226-2001, precision pressure gauge GB/T 1227-2001, diffuse si formula pressure unit JB/T10726-2007, force balance type pressure unit JB/T 8216.5-1999 or the like.This device comprises cushion chamber and the pressure gauge connection that is attached thereto, and pressure gauge connection can connect tensimeter, comprises that also source of the gas and alternation vapour lock that cushion chamber connects respectively produce system.Source of the gas provides gas medium for cushion chamber, can dispose air compressor machine, pneumatic accumulator or vacuum pump etc. as required.Alternation vapour lock generation system produces needed alternation condition (as sine wave etc.), the variation of control cushion chamber internal gas pressure.
Be provided with flow regulator between source of the gas and the cushion chamber, the pilot-gas flow.
Described alternation vapour lock generation system comprises the alternation vapour lock nozzle system that is connected with cushion chamber, is connected with range-adjustable mechanism with alternation vapour lock nozzle system, is connected with drive motor and wheel box with range-adjustable mechanism.Range-adjustable mechanism is slider-crank mechanism or one group of cam.Drive motor and wheel box provide power, can change speed, drive the range-adjustable mechanism kinematic, realize the movement travel (sine wave etc.) that needs.
Described vapour lock nozzle system comprises the gentle obstruction of the nozzle that is equipped with, and nozzle and/or vapour lock plug are connected with spring, and vapour lock portion beyond the Great Wall is provided with guide cylinder, and there is base guide cylinder and nozzle outside, and bleeder vent and mounting hole are arranged on the base.
The gas medium pressure table stress alternation test unit that the utility model provides is to realize the test of tensimeter stress alternation with gas as medium, solved liquid fully as variety of issue that medium produced, can realize the negative pressure test, test pressure hour also can be good at realizing process of the test, can not produce pollution, very environmental protection.Also realized the stress alternation test of pressure vacuum gauge simultaneously.Has the excellent popularization using value.
Description of drawings
Fig. 1 is the structure principle chart of the utility model embodiment;
Fig. 2 is the structure principle chart of alternation vapour lock nozzle system among the utility model embodiment.
Wherein, 1. source of the gas, 2. flow regulator, 3. cushion chamber, 4. pressure gauge connection, 5. alternation vapour lock nozzle system, 6. slider-crank mechanism, 7. drive motor and wheel box, 8. nozzle location setting nut, 9. nozzle, 10. guide cylinder, 11. mounting holes, 12. base, 13. the vapour lock plug, 14. springs, 15. bleeder vents.
Embodiment
Embodiment with indefiniteness further explains, illustrates the technical program below.
A kind of gas medium pressure table stress alternation test unit, as shown in Figure 1, be applied to the stress alternation test of various manometers, pressure unit, pressure transducer, comprise a cushion chamber 3, be connected with one group of tensimeter with cushion chamber 3 by pressure gauge connection 4, be tested tensimeter, be connected with a source of the gas 1 with cushion chamber 3 by a flow regulator 2, be connected with an alternation vapour lock nozzle system 5 with cushion chamber 3, be connected with a slider-crank mechanism 6 with alternation vapour lock nozzle system 5, be connected with a drive motor and wheel box 7 with slider-crank mechanism 6.
For alternation vapour lock nozzle system 5, as shown in Figure 2, comprise the nozzle 9 gentle obstructions 13 that are equipped with, vapour lock plug 13 is connected with spring 14, vapour lock plug 13 outer setting have guide cylinder 10, nozzle 9 and guide cylinder 10 outer setting have base 12, and bleeder vent 15 and mounting hole 11 are arranged on the base 12, base 12 outsides, with nozzle 9 be equipped with nozzle location setting nut 8.
During application, the pressurized air that source of the gas 1 produces is input in the cushion chamber 3 by flow regulator 2, forms certain air pressure in the cushion chamber 3, and gas is discharged in the atmosphere by alternation vapour lock nozzle system 5.
This device at first starts drive motor and wheel box 7, the power of alternation is provided, for example sinusoidal wave power, drive slider-crank mechanism 6 actions, slider-crank mechanism 6 drives spring 14 motions in the alternation vapour lock nozzle system 5, spring 14 and then drive vapour lock plug 13 are done linear reciprocating motion in guide cylinder 10, the variation of sinusoidal rule takes place in the elastic force of spring 14 thereupon, thereby vapour lock plug 13 is done the motion of sinusoidal rule, the gas of 13 pairs of nozzles of vapour lock plug, 9 ejections produces certain vapour lock, thereby make cushion chamber 3 keep certain pressure, this pressure is directly proportional with the elastic force that spring 14 produces, and regulates control by spring 14.Because spring 14 is done the variation of sinusoidal rule with drive motor and wheel box 7, so caused cushion chamber 3 to produce the alternating pressure of sinusoidal rule.Promptly realized the tensimeter Alternating Test.
Claims (5)
1. gas medium pressure table stress alternation test unit, the pressure gauge connection (4) that comprises cushion chamber (3) and be attached thereto is characterized in that also comprising: source of the gas that cushion chamber connects respectively (1) and alternation vapour lock produce system.
2. gas medium pressure table stress alternation test unit according to claim 1 is characterized in that: be provided with flow regulator (2) between described source of the gas (1) and the cushion chamber (3).
3. gas medium pressure table stress alternation test unit according to claim 1, it is characterized in that: described alternation vapour lock generation system comprises the alternation vapour lock nozzle system (5) that is connected with cushion chamber (3), be connected with range-adjustable mechanism with alternation vapour lock nozzle system (5), be connected with drive motor and wheel box (7) with range-adjustable mechanism.
4. gas medium pressure table stress alternation test unit according to claim 3 is characterized in that: described range-adjustable mechanism is slider-crank mechanism (6) or one group of cam.
5. gas medium pressure table stress alternation test unit according to claim 3, it is characterized in that: described vapour lock nozzle system comprises the gentle obstruction of nozzle (9) (13) that is equipped with, nozzle (9) and/or vapour lock plug (13) are connected with spring (14), vapour lock plug (13) outer setting has guide cylinder (10), there is base (12) guide cylinder (10) and nozzle (9) outside, and bleeder vent (15) and mounting hole (11) are arranged on the base (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202331460U CN201331413Y (en) | 2008-12-31 | 2008-12-31 | Gaseous medium manometer alternating load testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202331460U CN201331413Y (en) | 2008-12-31 | 2008-12-31 | Gaseous medium manometer alternating load testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331413Y true CN201331413Y (en) | 2009-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202331460U Expired - Fee Related CN201331413Y (en) | 2008-12-31 | 2008-12-31 | Gaseous medium manometer alternating load testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201331413Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449657A (en) * | 2017-09-01 | 2017-12-08 | 贵州永红航空机械有限责任公司 | A kind of negative pressure pressure alternation test method and apparatus |
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
-
2008
- 2008-12-31 CN CNU2008202331460U patent/CN201331413Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449657A (en) * | 2017-09-01 | 2017-12-08 | 贵州永红航空机械有限责任公司 | A kind of negative pressure pressure alternation test method and apparatus |
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
| CN111693210B (en) * | 2020-07-01 | 2021-08-27 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20101231 |