CN100557395C - Ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus - Google Patents
Ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus Download PDFInfo
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- CN100557395C CN100557395C CNB2008100590357A CN200810059035A CN100557395C CN 100557395 C CN100557395 C CN 100557395C CN B2008100590357 A CNB2008100590357 A CN B2008100590357A CN 200810059035 A CN200810059035 A CN 200810059035A CN 100557395 C CN100557395 C CN 100557395C
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus.Source of the gas links to each other with the inlet end of pressure control valve, flowmeter is connected in the middle of pressure control valve exhaust end and the piston rod inlet end, piston bush is installed on the adjustable pedestal, it between piston rod and the piston bush clearance fit, pressure transducer is installed on the piston bush, and the signal wire that pressure control valve, flow are taken into account pressure transducer links to each other with controller respectively.Use comparatively simple system to realize the pneumatic cavity volume that has the secure fit gap is carried out the pressure characteristic test, maximum working pressure (MOP) can reach 35MPa, can realize the not pressure characteristic test of isometric cavity volume by adjusting the piston bush installation site, the pressure characteristic test of the cavity volume of different fit clearance can be realized by changing piston rod or piston bush, a kind of fast-response, high-precision low discharge pressure control valve can be provided simultaneously.
Description
Technical field
The present invention relates to a kind of ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus.
Background technology
All there is pneumatic cavity volume on nearly all pneumatic element, and the pressure control of cavity volume one of the core content in pneumatic field especially, the further investigation of pneumatics be unable to do without the research of pneumatic cavity volume pressure characteristic.Still do not have at present special arrangement and be used to test the existence fixedly pressure characteristic of the cavity volume of exhaust clearance, especially cavity volume and the adjustable proving installation of tolerance clearance.
In addition, the superhigh pressure pneumatic field more than 10MPa, the automatic pressure control element does not still have ripe product.Common hand adjustment pressure control valve operation is slow, and degree of regulation is low; Existing electromagnetic switch valve response speed is slower, can't be used for the accurate pressure control of little cavity volume equally.The continuous quick control of wide pressure needs the automatic pressure operation valve that response speed is fast, degree of regulation is high, and working pressure and flow should be able to meet the demands.
Summary of the invention
The object of the present invention is to provide a kind of ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus.The superhigh pressure pneumatic device that can test the pressure characteristic of the cavity volume of different fit clearance and volume provides a kind of fast-response, high-precision low discharge pressure control valve simultaneously.
The technical solution adopted for the present invention to solve the technical problems is:
Comprise source of the gas, pressure control valve, flowmeter, fixing piston rod, piston bush, adjustable pedestal, pressure transducer and controller; Source of the gas links to each other with the inlet end of pressure control valve, flowmeter is connected in the middle of pressure control valve exhaust end and the piston rod inlet end, piston bush is installed on the adjustable pedestal, it between piston rod and the piston bush clearance fit, pressure transducer is installed on the piston bush, and the signal wire that pressure control valve, flow are taken into account pressure transducer links to each other with controller respectively.
Described pressure control valve is a Direct Action Type ratio guiding valve, comprises valve body, valve pocket, O-ring seal, spool, proportion electro-magnet and valve core spring; All have air intake opening and exhausr port on valve body, valve pocket and the spool; Valve pocket is installed in valve inner, communicate corresponding with exhausr port of air intake opening of its air intake opening and exhausr port and valve body; The valve pocket outside has annular gas tank, and inside has axially extending bore, radially has rectangular through-hole and connects annular gas tank and inner axially extending bore; Spool be installed in the axially extending bore of valve pocket and with its formation clearance fit, the spool axial hole is communicated with air intake opening and the exhausr port of self, during off working state, the air intake opening of spool does not communicate with exhausr port with the air intake opening of exhausr port and valve pocket; Proportion electro-magnet is installed in the end of valve body, an end in contact of its push rod and spool; Valve core spring is installed in the valve pocket and with the other end of spool and contacts; First O-ring seal is installed in respectively in the sealed groove in the valve pocket outside, and second O-ring seal is installed in the sealed groove of proportion electro-magnet end.
The beneficial effect that the present invention has is:
Use comparatively simple system to realize the pneumatic cavity volume that has the secure fit gap is carried out the pressure characteristic test, maximum working pressure (MOP) can reach 35MPa, can realize the not pressure characteristic test of isometric cavity volume by adjusting the piston bush installation site, the pressure characteristic test of the cavity volume of different fit clearance can be realized by changing piston rod or piston bush, a kind of fast-response, high-precision low discharge pressure control valve can be provided simultaneously.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present invention.
Fig. 2 is the structural principle synoptic diagram of pressure control valve among the present invention.
Fig. 3 is the structural representation of valve pocket in the pressure control valve.
Fig. 4 is the mated condition figure of spool and valve pocket when not applying control signal
Fig. 5 is the mated condition figure of spool and valve pocket when applying control signal
Among the figure: 1, source of the gas, 2, pressure control valve, 3, flowmeter, 4, Gu Ding piston rod, 5, piston bush, 6, adjustable pedestal, 7, pressure transducer, 8, controller, 9, valve body, 10, valve pocket, 11, O-ring seal, 12, spool, 13, proportion electro-magnet, 14, valve core spring, 15, annular gas tank, 16, rectangular through-hole.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention includes source of the gas 1, pressure control valve 2, flowmeter 3, fixing piston rod 4, piston bush 5, adjustable pedestal 6, pressure transducer 7 and controller 8; Source of the gas 1 links to each other with the inlet end of pressure control valve 2, flowmeter 3 is connected in the middle of pressure control valve 2 exhaust ends and piston rod 4 inlet ends, piston bush 5 is installed on the adjustable pedestal 6, be clearance fit between piston rod 4 and the piston bush 5, pressure transducer 7 is installed on the piston bush 5, and the signal wire of pressure control valve 2, flowmeter 3 and pressure transducer 7 links to each other with controller 8 respectively.Controller 8 be electromechanical equipment than the universal product, can realize that function gets final product.
As shown in Figure 1, described pressure control valve 2 is a Direct Action Type ratio guiding valve, comprises valve body 9, valve pocket 10, O-ring seal 11, spool 12, proportion electro-magnet 13 and valve core spring 14; All have air intake opening and exhausr port on valve body 9, valve pocket 10 and the spool 12; Valve pocket 10 is installed in valve body 9 inside, communicate corresponding with exhausr port of air intake opening of its air intake opening and exhausr port and valve body 9; Valve pocket 10 outsides have annular gas tank 15, and inside has axially extending bore, radially have rectangular through-hole 16 and connect annular gas tank 15 and inner axially extending bore; Spool 12 be installed in the axially extending bore of valve pocket 10 and with its formation clearance fit, spool 12 axial holes are communicated with air intake opening and the exhausr port of self, during off working state, the air intake opening of spool 12 does not communicate with exhausr port with the air intake opening of exhausr port and valve pocket 10; Proportion electro-magnet 13 is installed in the end of valve body 9, an end in contact of its push rod and spool 12; Valve core spring 14 is installed in the valve pocket 10 and with the other end of spool 12 and contacts; First O-ring seal 11 is installed in the sealed groove in valve pocket 10 outsides, and second O-ring seal is installed in the sealed groove of proportion electro-magnet 13 ends.
As shown in Figure 3, be the structural representation of the valve pocket of pressure control valve of the present invention, valve pocket 10 outsides have annular gas tank 15, and inside has axially extending bore, radially have rectangular through-hole 16 and connect annular gas tanks 15 and inner axially extending bores.
As shown in Figure 4, spool is that positive opening cooperates with valve pocket, and promptly the shoulder of spool covers the rectangular through-hole of valve pocket fully when not applying control signal, and this moment, the air intake opening and the exhausr port of valve body were obstructed; After applying control signal, proportion electro-magnet promotes the acting force motion that spool overcomes valve core spring, the mated condition of spool and valve pocket as shown in Figure 5 at this moment, between the air intake opening of valve body and the exhausr port certain area of passage is arranged at this moment, and the control signal that this area of passage and controller apply is linear, can realize the aperture of pressure control valve is controlled by the size that changes Control current.
The aperture that the air inlet of piston cavity volume is adjusted pressure control valve by controller realizes, cavity volume gas is finished exhaust by the gap of piston bush and piston rod is spontaneous.When carrying out the pressure characteristic test, controller is determined real-time target pressure value P (goal pressure should be lower than bleed pressure P1) according to pressure characteristic to be tested such as step response or sinusoidal response etc., and compare with detected piston cavity volume pressure P 2, if P2＞P, illustrate that cavity volume pressure is higher than goal pressure, then reduce the aperture of pressure control valve so that cavity volume pressure descends, if instead P2＜P, then the aperture of intensified pressure operation valve is so that the rising of cavity volume pressure.If carry out the control of constant goal pressure, the intake and exhaust flow of cavity volume should be stabilized in a fixed value, and the spool of pressure control valve finally reaches balance near a certain position; If carry out non-constant goal pressure control, the intake and exhaust flow of cavity volume is changing all the time, and the spool of pressure control valve is kept in motion all the time with the variation of goal pressure.
The data of pressure, flow and control signal can be used for the pressure characteristic of cavity volume is carried out detailed analysis and study in the controller energy record controls process.Under the situation of not changing element, can finish not isometric cavity volume test by the installation site of adjusting piston bush; By changing the cavity volume test that different piston rod of tolerance clearance or piston bush can be finished different fit clearance.
Claims (1)
1, a kind of ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus comprises source of the gas (1), pressure control valve (2), flowmeter (3), fixing piston rod (4), piston bush (5), adjustable pedestal (6), pressure transducer (7) and controller (8); Source of the gas (1) links to each other with the inlet end of pressure control valve (2), flowmeter (3) is connected in the middle of pressure control valve (2) exhaust end and piston rod (4) inlet end, piston bush (5) is installed on the adjustable pedestal (6), between piston rod (4) and the piston bush (5) is clearance fit, pressure transducer (7) is installed on the piston bush (5), and the signal wire of pressure control valve (2), flowmeter (3) and pressure transducer (7) links to each other with controller (8) respectively; It is characterized in that:
Described pressure control valve (2) is a Direct Action Type ratio guiding valve, comprises valve body (9), valve pocket (10), O-ring seal (11), spool (12), proportion electro-magnet (13) and valve core spring (14); All have air intake opening and exhausr port on valve body (9), valve pocket (10) and the spool (12); Valve pocket (10) is installed in valve body (9) inside, communicate corresponding with exhausr port of air intake opening of its air intake opening and exhausr port and valve body (9); Valve pocket (10) outside has annular gas tank (15), and inside has axially extending bore, radially has rectangular through-hole (16) and connects annular gas tank (15) and inner axially extending bore; Spool (12) be installed in the axially extending bore of valve pocket (10) and with its formation clearance fit, spool (12) axial hole is communicated with air intake opening and the exhausr port of self, during off working state, the air intake opening of spool (12) does not communicate with exhausr port with the air intake opening of exhausr port and valve pocket (10); Proportion electro-magnet (13) is installed in the end of valve body (9), an end in contact of its push rod and spool (12); Valve core spring (14) is installed in the valve pocket (10) and with the other end of spool (12) and contacts; First O-ring seal (11) is installed in the sealed groove in valve pocket (10) outside, and second O-ring seal is installed in the sealed groove of proportion electro-magnet (13) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100590357A CN100557395C (en) | 2008-01-07 | 2008-01-07 | Ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100590357A CN100557395C (en) | 2008-01-07 | 2008-01-07 | Ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101216362A CN101216362A (en) | 2008-07-09 |
| CN100557395C true CN100557395C (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2008100590357A Expired - Fee Related CN100557395C (en) | 2008-01-07 | 2008-01-07 | Ultra-high pressure air-actuated clearance-dimension-pressure characteristic test apparatus |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109870383A (en) * | 2017-12-01 | 2019-06-11 | 中石化石油工程技术服务有限公司 | Leakage-stop liquid Formula Evaluation device |
| CN111405389B (en) * | 2020-04-14 | 2021-11-12 | 金勇威 | High-efficient radiating 5G basic station |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083741U (en) * | 1990-01-20 | 1991-08-28 | 山西矿业学院 | Dynamic property tester for hydraulic support safety valve |
| CN1383042A (en) * | 2002-05-24 | 2002-12-04 | 浙江大学 | Automatic controller for lowering pressure of high-pressure gas by volume expansion |
| CN2703257Y (en) * | 2004-04-19 | 2005-06-01 | 余维初 | Intelligent high temperature and high pressure kinetic water loss meter |
-
2008
- 2008-01-07 CN CNB2008100590357A patent/CN100557395C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2083741U (en) * | 1990-01-20 | 1991-08-28 | 山西矿业学院 | Dynamic property tester for hydraulic support safety valve |
| CN1383042A (en) * | 2002-05-24 | 2002-12-04 | 浙江大学 | Automatic controller for lowering pressure of high-pressure gas by volume expansion |
| CN2703257Y (en) * | 2004-04-19 | 2005-06-01 | 余维初 | Intelligent high temperature and high pressure kinetic water loss meter |
Non-Patent Citations (4)
| Title |
|---|
| CN2011417792Y(ZL200820081922.X) 2008.10.29 * |
| 一种高压气动溢流阀性能试验系统. 周满玉等.液压与气动，第5期. 2007 * |
| 高压气动容积减压系统研制. 贾光政等.液压与气动，第8期. 2003 * |
| 高压气动容积减压装置的控制器设计. 陈奕泽等.机床与液压，第10期. 2004 * |
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| CN101216362A (en) | 2008-07-09 |
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Granted publication date: 20091104 Termination date: 20110107 |