CN1828252A - Sealing property testing equipment - Google Patents
Sealing property testing equipment Download PDFInfo
- Publication number
- CN1828252A CN1828252A CN 200610039570 CN200610039570A CN1828252A CN 1828252 A CN1828252 A CN 1828252A CN 200610039570 CN200610039570 CN 200610039570 CN 200610039570 A CN200610039570 A CN 200610039570A CN 1828252 A CN1828252 A CN 1828252A
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- China
- Prior art keywords
- main body
- cavity
- packing
- valve
- rod
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- 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.)
- Granted
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 238000012856 packing Methods 0.000 claims description 46
- 206010008469 Chest discomfort Diseases 0.000 claims description 27
- 239000000945 filler Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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Abstract
The device comprises: a body with a through valve cavity with part radial enlarged as filler cavity for to-and-fro or spiral motion of a valve rod, a high-pressure cavity connected to former cavity and a first through hole both on the body, a sealing cover on one body end with a second through hole and a testing cavity. This invention has high precision, and well security.
Description
Technical field
The present invention relates to a kind of in order to detect the packing_seal performance and the sealing property testing equipment in life-span.
Background technology
In the prior art, a kind of sealing property testing equipment, comprise main body, valve rod, main body has the valve-rod cavity of through-body, and valve rod is slidably disposed in the described valve-rod cavity, and the part valve-rod cavity radially becomes big formation packing cavity, the main body outside surface is connected with high pressure chest, an end of valve rod extends into high pressure chest, has through hole on the high pressure chest, and tester records the situation that the high pressure intracavity gas changes by through hole.When carrying out the packing test, with the packing pressure injection in stuffing-box, feed gases at high pressure or liquid in the high pressure chest, make packing seal to the high-pressure medium in the high pressure chest, valve rod is returned to reference position behind the reciprocating several times in the inner chamber of main body, the detection table that links to each other with high pressure chest shows that pressure wherein changes, if packing_seal is functional, then data do not have significant change on the detection table, if packing_seal performance deficiency, the medium in the high pressure chest can leak along the packing cavity place, data change on the detection table, can record the sealing property of packing thus.
Because the to-and-fro movement of valve rod in high pressure chest, cause the actual volume of high pressure chest to change, had a strong impact on the precision of detection data, and leakage rate is often very little, be easy to generate reading error, make that the accuracy of packing_seal The performance test results is not high, into high pressure chest is directly stretched in an end of valve rod simultaneously, end at valve rod, gas in the high pressure chest can produce very big thrust to this end of valve rod, to the bearing requirements height of valve rod link, and the hidden danger that makes proving installation have to be absolutely unsafe, valve rod has the possibility that is ejected at any time, even causes accident to take place.
Summary of the invention
The object of the invention provides a kind of sealing property testing equipment, can accurately record the sealing property of packing and can avoid pressure chamber that the valve rod end is produced thrust, has high security.
Technical scheme of the present invention is: a kind of sealing property testing equipment, comprise main body, valve rod, the valve-rod cavity that has through-body on the main body, valve rod can be back and forth or spiral reciprocally move in valve-rod cavity, the part valve-rod cavity radially becomes the packing cavity that is formed for placing packing greatly, has the high pressure chest that communicates with valve-rod cavity in the main body, has first through hole on the main body, first through hole is connected with high pressure chest and outer port part is positioned at the outside surface of main body, one end of main body is connected with seal closure, the test chamber that has hollow in the seal closure, an end of valve rod extends into test chamber, has second through hole on the seal closure.
Main body is made of first main body and second main body, and first main body and second main body connect, and valve-rod cavity runs through first main body and second main body.
Packing cavity comprises first packing cavity and second packing cavity, and first packing cavity and second packing cavity lay respectively in first main body and second main body.
First packing cavity and second packing cavity are cylindrical cavity.
The equal diameters of first packing cavity and second packing cavity.
First through hole is arranged on second main body side, penetrates the outside surface of a high pressure chest and a side.
On the interface that is positioned at first main body and second main body of high pressure chest symmetry.
The present invention compared with prior art has the following advantages: because the integral body of valve rod is through first main body and second main body, the volume change that the pressure of medium can not cause because of the motion of valve rod in the test chamber produces pressure surge, range to test chart requires lower, make test result have high precision, the sealing property that can accurately reflect packing, simultaneously when stem shaft during to reciprocal or spiral to-and-fro movement, gas in the test chamber does not produce pressure to the end of valve rod, make valve rod to stablize and be in the test chamber high safety.
Description of drawings
Accompanying drawing 1 is a front view of the present invention;
Accompanying drawing 2 is the A-A direction cut-open view of accompanying drawing 1;
Wherein: 1, first main body; 2, second main body; 3, valve rod; 4, first packing cavity; 5, second packing cavity; 6, high pressure chest; 7, test chamber; 8, first through hole; 9, main body; 10, valve-rod cavity; 11, seal closure; 12, second through hole.
Embodiment
Referring to accompanying drawing 1 to accompanying drawing 2, a kind of sealing property testing equipment, comprise main body 9, valve rod 3, main body 9 has the valve-rod cavity 10 of through-body 9, valve rod 3 is slidably disposed in the valve-rod cavity 10, part valve-rod cavity 10 radially becomes the packing cavity that is formed for placing packing greatly, has the high pressure chest 6 that communicates with valve-rod cavity 10 in the main body 9.Main body 9 is made of first main body 1 and second main body 2, and first main body 1 and second main body 2 connect, and valve-rod cavity 10 runs through first main body 1 and second main body 2.On the interface that is positioned at first main body 1 and second main body 2 of high pressure chest 6 symmetries.
Have on second main body 2 that first through hole, 8, the first through holes 8 are connected with high pressure chest 6 and outer port part is positioned at the outside surface of second main body 2.Gases at high pressure are injected in the high pressure chest 6 by first through hole 8.One end of second main body 2 is connected with seal closure 11, has the test chamber 7 of hollow in the seal closure 11, is atmosphere gas in the test chamber 7.One end of valve rod 3 extends into test chamber 7, and the other end is connected in drive unit, and by the power that drive unit provides, valve rod 3 is done axially reciprocal or spiral to-and-fro movement in valve-rod cavity 10.Have second through hole 12 on the seal closure 11, tester records gas pressure change in the test chamber 7 by second through hole 12.
Packing cavity comprises that first packing cavity 4 and second packing cavity, 5, the first packing cavities 4 and second packing cavity 5 are cylindrical cavity and equal diameters.First packing cavity 4 and second packing cavity 5 lay respectively in first main body 1 and second main body 2, and packing to be measured is respectively placed in first packing cavity 4 and second packing cavity 5, are wrapped on the valve rod 3, and the gases at high pressure in the high pressure chest 6 are sealed.
During test, valve rod 3 is done axially and back and forth or behind the spiral to-and-fro movement several times is returned to reference position, simultaneously with the gaseous tension in the tester observation test chamber 7.If the packing_seal performance is bad, gases at high pressure in the high pressure chest 6 or liquid enter test chamber 7 along second packing cavity 5 and valve-rod cavity 10, make that gaseous tension changes in the test chamber 7; If packing_seal is functional, gases at high pressure are sealed in the high pressure chest 6, and gaseous tension does not change in the test chamber 7.Because of the gas in the test chamber 7 is atmosphere gas, tester can be selected journey high precision in a small amount for use, can reflect accurately that pressure medium changes, and can accurately measure the sealing property of packing.And high pressure chest 6 is arranged at the inside of main body 9, and an end of valve rod 3 is in the test chamber 7, and gases at high pressure do not produce resistance to the axially-movable of valve rod 3, have eliminated the hidden danger in the traditional test device.
Claims (6)
1, a kind of sealing property testing equipment, comprise main body (9), valve rod (3), the valve-rod cavity (10) that has through-body (9) on the described main body (9), described valve rod (3) can be axially back and forth or spiral reciprocally move in described valve-rod cavity (10), the described valve-rod cavity of part (10) radially becomes the packing cavity that is formed for placing packing greatly, it is characterized in that: have the high pressure chest (6) that communicates with described valve-rod cavity (10) in the described main body (9), has first through hole (8) on the described main body (9), described first through hole (8) is connected with described high pressure chest (6) and outer port part is positioned at the outside surface of described main body (9), one end of described main body (9) is connected with seal closure (11), the test chamber (7) that has hollow in the described seal closure (11), one end of described valve rod (3) extends into described test chamber (7), has second through hole (12) on the described seal closure (11).
2, sealing property testing equipment according to claim 1, it is characterized in that: described main body (9) is made of first main body (1) and second main body (2), described first main body (1) connects with second main body (2), and described valve-rod cavity (10) runs through described first main body (1) and second main body (2).
3, sealing property testing equipment according to claim 2, it is characterized in that: described packing cavity comprises first packing cavity (4) and second packing cavity (5), and described first packing cavity (4) and second packing cavity (5) lay respectively in described first main body (1) and second main body (2).
4, sealing property testing equipment according to claim 3 is characterized in that: described first packing cavity (4) and second packing cavity (5) are cylindrical cavity.
5, sealing property testing equipment according to claim 4 is characterized in that: the equal diameters of described first packing cavity (4) and second packing cavity (5).
6, sealing property testing equipment according to claim 2 is characterized in that: on the interface that is positioned at described first main body (1) and second main body (2) of described high pressure chest (6) symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100395707A CN100483096C (en) | 2006-04-06 | 2006-04-06 | Sealing property testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100395707A CN100483096C (en) | 2006-04-06 | 2006-04-06 | Sealing property testing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1828252A true CN1828252A (en) | 2006-09-06 |
| CN100483096C CN100483096C (en) | 2009-04-29 |
Family
ID=36946749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100395707A Expired - Fee Related CN100483096C (en) | 2006-04-06 | 2006-04-06 | Sealing property testing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100483096C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607781A (en) * | 2012-03-16 | 2012-07-25 | 中国核电工程有限公司 | Non-contact leakage detecting method of double-layered packing sealing structure and system |
| CN104330225A (en) * | 2014-11-20 | 2015-02-04 | 苏州宝骅机械技术有限公司 | Leakage detection device for sealing filler |
| CN106706231A (en) * | 2015-11-12 | 2017-05-24 | 衡阳市锦泰工具有限公司 | Dynamic sealing performance detection device of three-section sealing component |
| CN106706230A (en) * | 2015-11-12 | 2017-05-24 | 衡阳市锦泰工具有限公司 | Dynamic sealing performance detector of two-segment type sealing assembly |
| CN109916570A (en) * | 2019-04-11 | 2019-06-21 | 重庆大学 | Experiments of sealing performance machine |
-
2006
- 2006-04-06 CN CNB2006100395707A patent/CN100483096C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607781A (en) * | 2012-03-16 | 2012-07-25 | 中国核电工程有限公司 | Non-contact leakage detecting method of double-layered packing sealing structure and system |
| CN102607781B (en) * | 2012-03-16 | 2015-09-30 | 中国核电工程有限公司 | A kind of contactless leak hunting method of double-deck packing seal structure and system |
| CN104330225A (en) * | 2014-11-20 | 2015-02-04 | 苏州宝骅机械技术有限公司 | Leakage detection device for sealing filler |
| CN104330225B (en) * | 2014-11-20 | 2017-01-11 | 苏州宝骅机械技术有限公司 | Leakage detection device for sealing filler |
| CN106706231A (en) * | 2015-11-12 | 2017-05-24 | 衡阳市锦泰工具有限公司 | Dynamic sealing performance detection device of three-section sealing component |
| CN106706230A (en) * | 2015-11-12 | 2017-05-24 | 衡阳市锦泰工具有限公司 | Dynamic sealing performance detector of two-segment type sealing assembly |
| CN109916570A (en) * | 2019-04-11 | 2019-06-21 | 重庆大学 | Experiments of sealing performance machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100483096C (en) | 2009-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SUZHOU BAOHUA MECHANICAL TECHNOLOGY Co.,Ltd. Assignor: Ma Zhigang Contract record no.: 2011990001074 Denomination of invention: Testing device for plane sealing performance Granted publication date: 20090429 License type: Exclusive License Open date: 20060906 Record date: 20111206 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161220 Address after: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Patentee after: SUZHOU BAOHUA MECHANICAL TECHNOLOGY Co.,Ltd. Address before: 215415 Taicang Regal Economic Development Zone, Jiangsu Patentee before: Ma Zhigang |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Patentee after: SUZHOU BMC SEALING TECHNOLOGY CO.,LTD. Address before: Shuangfeng town Taicang city Suzhou City, Jiangsu province 215415 rich economic development zone Patentee before: SUZHOU BAOHUA MECHANICAL TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 |