CN103090905B - A kind of measuring head of valve test - Google Patents
A kind of measuring head of valve test Download PDFInfo
- Publication number
- CN103090905B CN103090905B CN201310031777.XA CN201310031777A CN103090905B CN 103090905 B CN103090905 B CN 103090905B CN 201310031777 A CN201310031777 A CN 201310031777A CN 103090905 B CN103090905 B CN 103090905B
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- China
- Prior art keywords
- spool
- measuring head
- spring
- sleeve
- test
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Abstract
The invention provides the measuring head of a kind of valve test, belong to field of mechanical technique.It solve existing valve measuring head serviceable life short, connect inconvenient problem.It comprises tubular body, body lower end is the threaded ends be connected with valve, the upper end of body is used for being connected with test syringe needle, the spool communicated with its inner chamber is provided with in body, chamber body is connected by spool with test syringe needle, spring is provided with between body and spool, path between spool and chamber body cuts off by spool under the elastic force effect of spring, body upper end sidepiece circumference is evenly equipped with some through holes, outside body upper end, cover has sleeve, sleeve madial wall is provided with ring groove, through hole is provided with the ball that external diameter is greater than through hole wall thickness, ball part is positioned at ring groove, ball test syringe needle insert body upper end and extrude can fall into testing needle cephalic region when spool is tested circular groove in.It has installs simple, easy to connect, the gasket seal not advantage such as tested person impact.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of measuring head, particularly relate to the measuring head of a kind of valve test.
Background technology
Measuring head is the vitals of valve when testing, and is all to puncture measuring head to record the relevant data of valve internal by test syringe needle when valve test.Measuring head lower end is threaded ends, and measuring head lower end is connected on valve, and when testing valve, the test syringe needle be connected with test instrumentation inserts measuring head upper end to be carried out testing thus the related data obtaining valve internal.
The seal of its inside of measuring head of the prior art generally adopts elastomeric material to make, and when utilizing measuring head to test, the rubber seal of the measuring head that needs measuring head to puncture could be tested smoothly.Piercing process inevitably makes rubber seal generation wearing and tearing to a certain degree, in addition, after test terminates, operating personnel need manually to be extracted in measuring head by test syringe needle, if test syringe needle hooks on the rubber seal in measuring head when extracting, firmly by outer for test syringe needle past firmly pull out time, rubber seal more likely can be caused to lose sealing function, thus reduce the serviceable life of measuring head.
In addition, during test, need operating personnel will test syringe needle by measuring head with hand always, make like this to operate also cumbersome, if and operating personnel test time because of carelessness hand is unclamped cause test syringe needle depart from measuring head, then cannot record data accurately, need to re-start test.
Summary of the invention
The object of the invention is for prior art exist the problems referred to above, propose a kind of easy to connect, test syringe needle insert after be connected firmly valve test measuring head.
Object of the present invention realizes by following technical proposal: a kind of measuring head of valve test, comprise tubular body, described body lower end is the threaded ends be connected with valve, the upper end of described body is used for being connected with test syringe needle, it is characterized in that, the spool communicated with its inner chamber is provided with in described body, described chamber body is connected by spool with test syringe needle, spring is provided with between described body and spool, path between spool and chamber body cuts off by described spool under the elastic force effect of spring, described body upper end sidepiece circumference is evenly equipped with some through holes, outside described body upper end, cover has sleeve, described sleeve madial wall is provided with ring groove, above-mentioned through hole is provided with the ball that external diameter is greater than through hole wall thickness, described ball part is positioned at above-mentioned ring groove, described ball test syringe needle insert body upper end and extrude can fall into testing needle cephalic region when spool is tested circular groove in.
Measuring head is connected on valve body by the threaded ends of body lower end, during original state, path between spool and body cuts off by spool under the elastic force effect of spring, ensures the sealing of test head body inside, and sleeve is locked in the sidepiece of body upper end under the effect of ball simultaneously.Test syringe needle inserts body upper end and extrudes spool and overcomes the elastic force effect of spring and move down, the spin of through hole can fall in the circular groove of testing needle cephalic region, make to lose constraint between sleeve and body, and spin can between through hole and the circular groove of test syringe needle, thus make test syringe needle lock mutually with body when testing.The external diameter of ball is greater than the wall thickness of through hole, can guarantee that ball rolls in through hole like this, but can not fall outward from through hole.
In the measuring head of above-mentioned valve test, described spool is in T shape, and described spool comprises cylindrical boss on base plate in the form of annular discs and base plate, and described both ends of the spring acts on body and base plate respectively.
In the measuring head of above-mentioned valve test, described boss inner chamber communicates with test needle wall, described boss sidepiece circumference is evenly equipped with some circular holes, and described bottom sidepiece is circumferentially evenly equipped with the limbers of some semicirculars in shape, and described limbers communicates with chamber body.Test syringe needle inserts behind body upper end, and test fluid flows into the passage of spool boss inner chamber by the inside testing syringe needle, then flows into chamber body through circular hole and limbers and finally to flow in valve body.
In the measuring head of above-mentioned valve test, described base plate is provided with gasket seal and gasket seal is sheathed on boss, and described gasket seal leans with the madial wall of body under the elastic force effect of spring.When test syringe needle does not insert, gasket seal leans with body madial wall under the elastic force effect of spring, is disconnected by the path between boss and body, the sealing of measuring head when guaranteeing not detect.
In the measuring head of above-mentioned valve test, back-moving spring is provided with between described body and sleeve, described sleeve madial wall is also provided with the gear edge that annular is protruded, the two ends of described reset act on gear edge and body respectively, and described back-moving spring is in confined state when ball part is positioned at the ring groove of sleeve.
When test syringe needle insert time, ball can fall in the circular groove of testing needle cephalic region, loses restriction between sleeve and body, sleeve under the elastic force effect of back-moving spring on move, make the through hole of the ring groove of sleeve and body no longer just right.
At the end of test, press down sleeve, ring groove and through hole are in again just to position, ball again part falls in ring groove, and back-moving spring is in confined state again.
In the measuring head of above-mentioned valve test, limited location snap ring is also overlapped in described body upper end, and described sleeve has the trend leaned on limited location snap ring under the elastic force effect of back-moving spring.Limited location snap ring can limit the stroke of back-moving spring, ensures that sleeve can not come off out from body.
In the measuring head of above-mentioned valve test, described ring groove is dip plane near the side on gear edge.Press at sleeve, the ring groove inside sleeve and through hole just pair time, dip plane can make ball successfully part fall in ring groove, namely reset to the state before test.
In the measuring head of above-mentioned valve test, described body lower end inside has been threaded spring base, described spring base has exhalant canal, and described chamber body is communicated with valve by exhalant canal, on the base plate that the two ends of described spring act on spool respectively and spring base.
In the measuring head of above-mentioned valve test, the quantity of described through hole is 5.
Compared with prior art, the measuring head of this valve test has the following advantages:
1, the measuring head of this valve test is easy for installation, and inserting behind body upper end operating personnel at test syringe needle only need just can by the outside of jacket casing in body upper end by lower sleeve;
2, the measuring head of this valve test is inserted behind body upper end at test syringe needle and is locked test syringe needle by spin, not only tests syringe needle easy to connect with test head body, also ensures that testing syringe needle can be firmly attached in test head body simultaneously;
3, the measuring head of this valve test can not cause damage to intrinsic gasket seal when testing syringe needle and inserting, and solves test syringe needle and repeatedly inserts the valve seepy question caused;
4, the measuring head of this valve test only need take off and make ball again partly be positioned at sleeve madial wall by lower sleeve after test terminates, and test syringe needle just automatically can exit from body upper end under the elastic force effect of spring.
Accompanying drawing explanation
Cut-open view when Fig. 1 is installing sleeve in the measuring head of this valve.
Fig. 2 is the cut-open view of the measuring head original state of this valve.
Cut-open view when Fig. 3 is the measuring head test of this valve.
Fig. 4 is the structural representation of spool in the measuring head of this valve.
In figure, 1, body; 2, threaded ends; 3, spool; 4, spring; 5, through hole; 6, sleeve; 7, ring groove; 8, ball; 9, base plate; 10, boss; 11, circular hole; 12, limbers; 13, gasket seal; 14, back-moving spring; 15, edge is kept off; 16, limited location snap ring; 17, dip plane; 18, spring base; 19, exhalant canal.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of measuring head of valve test, comprise tubular body 1, the lower end of body 1 is threaded ends 2, and the upper end of body 1 is connected with test syringe needle.Body 1 inside is cavity, T-shaped spool 3 is provided with in body 1, spool 3 comprises cylindrical boss 10 on base plate 9 in the form of annular discs and base plate 9, boss 10 inner chamber communicates with the inside of test syringe needle, boss 10 sidepiece circumference is evenly equipped with some circular holes 11, base plate 9 sidepiece is circumferentially evenly equipped with some semicirculars in shape and the limbers 12 communicated with body 1 inner chamber, and therefore body 1 inner chamber communicates by the passage of limbers 12 with boss 10 inner chamber, just can communicate with the inside of test syringe needle.
Body 1 lower end inside has been threaded connection spring base 18, and spring base 18 has exhalant canal 19, and the inner chamber of body 1 is communicated with valve by exhalant canal 19.The base plate 9 of spool 3 is provided with gasket seal 13, and gasket seal 13 is sheathed on again on boss 10 simultaneously, and the external diameter of gasket seal 13 is greater than the internal diameter of body 1 upper end.Be provided with spring 4 between spool 3 and body 1, the two ends of spring 4 act on base plate 9 and spring base 18 respectively, and gasket seal 13 leans with the madial wall of body 1 under the elastic force effect of spring 4, thus is cut off by the path between spool 3 and body 1.
Measuring head also comprises tubular sleeve 6, sleeve 6 is enclosed within body 1 upper end, body 1 upper end sidepiece circumference is evenly equipped with some through holes 5, through hole 5 place is provided with the ball 8 that external diameter is greater than through hole 5 wall thickness, sleeve 6 madial wall is provided with ring groove 7, and when test syringe needle does not insert body 1 upper end, ball 8 part is positioned at ring groove 7.In the present embodiment, the quantity of through hole 5 is 5, and correspondingly, the quantity of ball 8 is also 5.
Be provided with back-moving spring 14 between body 1 and sleeve 6, gear sleeve 6 madial wall being also provided with annular protrusion, along 15, keeps off the below being positioned at ring groove 7 along 15, and ring groove 7 is dip plane 17 near the side kept off along 15.The two ends of back-moving spring 14 act on the gear of sleeve 6 respectively along on 15 and body 1, and back-moving spring 14 is in confined state when ball 8 part is positioned at the ring groove 7 of sleeve 6.Body 1 upper end cover limited location snap ring 16, when testing syringe needle insertion body 1 upper end and testing, sleeve 6 has the trend leaned on limited location snap ring 16 under the elastic force effect of back-moving spring 14.
As shown in Figure 1, when installing sleeve 6, owing to keeping off the existence along 15 and body 1 through hole 5 place ball 8 in sleeve 6, sleeve 6 cannot be enclosed within body 1.Now, test syringe needle squeezing valve core 3 can be inserted, the ball 8 at through hole 5 place starts to expand to the outside of through hole 5, afterwards when testing syringe needle squeezing valve core 3 and moving down, ball 8 can partly fall in the circular groove of testing needle cephalic region, now smoothly sleeve 6 can be pressed down, and load onto limited location snap ring 16 in body 1 upper end, limit the stroke of sleeve 6.
As shown in Figure 2, measuring head is connected on valve by body 1 lower end.When not detecting valve, test syringe needle does not insert body 1 upper end, and gasket seal 13 leans with body 1 madial wall under the elastic force effect of spring 4, and cut off by the path between boss 10 inner chamber and body 1 inner chamber, namely test head body 1 is in closed condition.Meanwhile, ball 8 part at through hole 5 place is positioned at the ring groove 7 of sleeve 6, and sleeve 6 is with body 1 upper end thus lock mutually.
As shown in Figure 3, and when testing valve, the test syringe needle be connected with test instrumentation is inserted the upper end of test head body 1.After test syringe needle inserts, spool 3 can be extruded and make spool 3 overcome the elastic force effect of spring 4 and move down, gasket seal 13 and body 1 madial wall are separated, thus make the inner chamber of boss 10 and the intracavity inter-connection of body 1, just make the inside testing syringe needle be able to communicate with the inner chamber of body 1, now body 1 is in opening.
Simultaneously, when testing syringe needle and inserting, ball 8 presses down by the end of test syringe needle, ball 8 is stressed and moves in the ring groove 7 of sleeve 6, when the circular groove of testing needle cephalic region and through hole 5 face, ball 8 just spins off in the ring groove 7 of sleeve 6, and falls in the circular groove of testing needle cephalic region, no longer lock between sleeve 6 and body 1 upper end, sleeve 6 will under the elastic force effect of back-moving spring 14 on move and lean on limited location snap ring 16.
Due to when testing, ball 8 is between the circular groove of testing needle cephalic region and the through hole 5 of body 1 upper end, therefore, after test terminates, test syringe needle is directly pulled out outward and cannot be extracted.Now, only sleeve 6 need be pressed heavily down, the ring groove 7 of sleeve 6 is faced with the through hole 5 of body 1 again, ball 8 just can be separated with the circular groove of testing needle cephalic region, and fall in the ring groove 7 of sleeve 6, test syringe needle can just can automatically eject by the spool 3 in body 1 under the elastic force effect of spring 4 in body 1, and now body 1 is just in original state again, i.e. normally off.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (7)
1. the measuring head of a valve test, comprise tubular body (1), described body (1) lower end is the threaded ends (2) be connected with valve, the upper end of described body (1) is used for being connected with test syringe needle, it is characterized in that, the spool (3) communicated with its inner chamber is provided with in described body (1), described body (1) inner chamber is connected by spool (3) with test syringe needle, spring (4) is provided with between described body (1) and spool (3), path between spool (3) and body (1) inner chamber cuts off by described spool (3) under the elastic force effect of spring (4), described body (1) upper end sidepiece circumference is evenly equipped with some through holes (5), outside described body (1) upper end, cover has sleeve (6), described sleeve (6) madial wall is provided with ring groove (7), above-mentioned through hole (5) place is provided with the ball (8) that external diameter is greater than through hole (5) wall thickness, described ball (8) part is positioned at above-mentioned ring groove (7), described ball (8) inserts body (1) upper end at test syringe needle and extrudes when spool (3) is tested and can fall in the circular groove of testing needle cephalic region, back-moving spring (14) is provided with between described body (1) and sleeve (6), described sleeve (6) madial wall is also provided with gear edge (15) that annular is protruded, the two ends of described back-moving spring (14) act on gear respectively along on (15) and body (1), described back-moving spring (14) is in confined state when ball (8) part is positioned at ring groove (7) of sleeve (6), described ring groove (7) is dip plane (17) near the side of gear edge (15).
2. the measuring head of valve test according to claim 1, it is characterized in that, described spool (3) is in T shape, described spool (3) comprises base plate (9) in the form of annular discs and the upper cylindrical boss (10) of base plate (9), and described spring (4) two ends act on body (1) and base plate (9) respectively.
3. the measuring head of valve test according to claim 2, it is characterized in that, described boss (10) inner chamber communicates with test needle wall, described boss (10) sidepiece circumference is evenly equipped with some circular holes (11), described base plate (9) sidepiece is circumferentially evenly equipped with the limbers (12) of some semicirculars in shape, and described limbers (12) communicates with body (1) inner chamber.
4. the measuring head of valve test according to claim 3, it is characterized in that, described base plate (9) is provided with gasket seal (13) and gasket seal (13) is sheathed on boss (10), and described gasket seal (13) leans with the madial wall of body (1) under the elastic force effect of spring (4).
5. the measuring head of valve test according to claim 1, it is characterized in that, limited location snap ring (16) is also overlapped in described body (1) upper end, and described sleeve (6) has the trend leaned on limited location snap ring (16) under the elastic force effect of back-moving spring (14).
6. the measuring head of the valve test according to claim 1 or 2 or 3 or 4, it is characterized in that, described body (1) lower end inside has been threaded spring base (18), described spring base (18) has exhalant canal (19), described body (1) inner chamber is communicated with valve by exhalant canal (19), on the base plate (9) that the two ends of described spring (4) act on spool (3) respectively and spring base (18).
7. the measuring head of the valve test according to claim 1 or 2 or 3 or 4, it is characterized in that, the quantity of described through hole (5) is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310031777.XA CN103090905B (en) | 2013-01-25 | 2013-01-25 | A kind of measuring head of valve test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310031777.XA CN103090905B (en) | 2013-01-25 | 2013-01-25 | A kind of measuring head of valve test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103090905A CN103090905A (en) | 2013-05-08 |
| CN103090905B true CN103090905B (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310031777.XA Expired - Fee Related CN103090905B (en) | 2013-01-25 | 2013-01-25 | A kind of measuring head of valve test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103090905B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397894A (en) * | 2020-04-24 | 2020-07-10 | 刘勇 | Pollution tolerance test system for gear shifting constant pressure valve |
| CN113090219B (en) * | 2021-06-09 | 2021-08-17 | 西南石油大学 | Downhole blowout preventer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB818818A (en) * | 1956-09-01 | 1959-08-26 | Normalair Ltd | Improvements in or relating to pipe couplings |
| US4084614A (en) * | 1974-10-30 | 1978-04-18 | Bror Fridolf Thure Ekman | Fluid coupling device |
| CN200975571Y (en) * | 2006-11-23 | 2007-11-14 | 宁波市鄞州亚大汽车管件有限公司 | Detecting joint |
| CN201100499Y (en) * | 2007-09-27 | 2008-08-13 | 宁波忻杰燃气用具实业有限公司 | Secure pressure measuring connector |
| CN101418896A (en) * | 2008-10-30 | 2009-04-29 | 宁波志清实业有限公司 | Pressure measurable union coupling member |
| CN201673010U (en) * | 2010-05-18 | 2010-12-15 | 中国石油化工股份有限公司 | Leakage-free anti-theft pressure-gauge connector for oilfield |
-
2013
- 2013-01-25 CN CN201310031777.XA patent/CN103090905B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB818818A (en) * | 1956-09-01 | 1959-08-26 | Normalair Ltd | Improvements in or relating to pipe couplings |
| US4084614A (en) * | 1974-10-30 | 1978-04-18 | Bror Fridolf Thure Ekman | Fluid coupling device |
| CN200975571Y (en) * | 2006-11-23 | 2007-11-14 | 宁波市鄞州亚大汽车管件有限公司 | Detecting joint |
| CN201100499Y (en) * | 2007-09-27 | 2008-08-13 | 宁波忻杰燃气用具实业有限公司 | Secure pressure measuring connector |
| CN101418896A (en) * | 2008-10-30 | 2009-04-29 | 宁波志清实业有限公司 | Pressure measurable union coupling member |
| CN201673010U (en) * | 2010-05-18 | 2010-12-15 | 中国石油化工股份有限公司 | Leakage-free anti-theft pressure-gauge connector for oilfield |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103090905A (en) | 2013-05-08 |
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Granted publication date: 20151118 Termination date: 20180125 |