CN102346111B - Sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method - Google Patents
Sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method Download PDFInfo
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- CN102346111B CN102346111B CN 201110278823 CN201110278823A CN102346111B CN 102346111 B CN102346111 B CN 102346111B CN 201110278823 CN201110278823 CN 201110278823 CN 201110278823 A CN201110278823 A CN 201110278823A CN 102346111 B CN102346111 B CN 102346111B
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Abstract
The invention relates to a sealing device of a water pressure testing machine in a long-pipe gas-cylinder outer measurement method. the sealing device comprises a water jacket cover, two O-shaped rings and pressing nuts, wherein the water jacket cover is placed at the upper end surface of a gas-bag type sealing device; the upper end and the lower end of a transition thread joint are respectively provided with an external thread; the surfaces of inner holes of the pressing nuts are provided with internal threads; and the external thread of the upper end of the transition thread joint is connected with the pressing nut, and the external thread of the lower end of the transition thread joint is connected with the internal thread of a long-pipe gas-cylinder pipe opening. The middle part of the transition thread joint is provided with an outer hexagonal boss; and the upper surface and the lower surface of the outer hexagonal boss are respectively provided with a ring-shaped groove. According to the sealing device, the structure is simple, compact and reasonable; the accuracy of a long-pipe gas-cylinder test can be improved to meet the sealing requirement; and the sealing device is an essential component of the water pressure testing machine in the long-pipe gas-cylinder outer measurement method.
Description
Technical field
The present invention relates to a kind of packoff, specifically water pressure testing machine in long-pipe gas-cylinder outer measurement method carries out the packoff of hydrostatic test outside measurement.
Background technology
At present, when long tube gas cylinder is carried out the hydraulic testing, mainly carry out the internal test method hydraulic testing, and long tube gas cylinder hydrostatic test outside measurement is not carried out also substantially.Because internal test method hydraulic testing measuring accuracy is lower, its test findings can not truly reflect the quality of long tube gas cylinder quality.And general gas cylinder outside measurement method test packoff adopts the internal-expansion type threaded connector to seal usually, but the internal-expansion type screw-thread joint structure is complicated, also must rotate simultaneously with water jacket plug, if be used for long tube gas cylinder hydrostatic test outside measurement, its overall weight is excessive, so be inconvenient to use.
Summary of the invention
The object of the invention is to overcome above-mentioned weak point, thereby a kind of sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method is provided, the sealing device can improve the precision of long tube gas cylinder test.
According to technical scheme provided by the invention, sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method comprises water jacket plug, gland nut, the transition threaded connector, up and down two O type circles and bellows seal device, described water jacket plug is placed on the upper surface of bellows seal device, water jacket plug lower end cylindrical outer surface when airbag aeration and the air bag inside surface form sealing, described transition threaded connector is respectively equipped with external thread in two ends up and down, the bore area of gland nut is provided with internal thread, the upper external screw thread of described transition threaded connector is connected with gland nut, and its lower end external thread is connected with long tube gas cylinder mouth of pipe internal thread.
Described transition threaded connector center section is provided with the outer-hexagonal projection, outer-hexagonal projection upper and lower surface is respectively equipped with annular ditch groove, settle an O type circle in the following annular ditch groove, realize the sealing of long tube gas cylinder and transition threaded connector, settle the 2nd O type circle in the top annular ditch groove, realize the sealing of transition threaded connector and water jacket plug lower surface.
The inside of described transition threaded connector is through hole, and its upper end is provided with internal thread, cooperates with the external thread of pressure testing threaded connector.
The center of described water jacket plug is provided with manhole, the turnover of test(ing) medium during in order to the hydraulic testing.
Described gland nut upper end is large, and the lower end is little; Its upper end is designed to outer-hexagonal shape, and its lower end is provided with chamfering, and outside surface is made to the face of cylinder in the middle of it.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; Can improve the precision of long tube gas cylinder test, reach seal request, this sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method is the indispensable important component part of this machine.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Following the present invention is further described in connection with the enforcement in the accompanying drawing:
As shown in Figure 1, water jacket plug 1, gland nut 2, an O type circle 3, transition threaded connector 4 and the 2nd O type circle 5, bellows seal device 6.
Described water jacket plug 1 is placed on the upper surface of bellows seal device 6, water jacket plug 1 lower end cylindrical outer surface when airbag aeration and the air bag inside surface form sealing; And sealing state is removed when air bags.The center of water jacket plug 1 is provided with manhole, the turnover of test(ing) medium during in order to the hydraulic testing.
The bore area of described gland nut 2 is provided with internal thread, is connected with transition threaded connector 4 upper external screw threads, and its upper end is large, and the lower end is little; Its upper end is designed to outer-hexagonal shape, and its lower end is provided with chamfering, and outside surface is designed to the face of cylinder in the middle of it.When screwing, gland nut 2 pushes down the water jacket plug upper surface.
Described transition threaded connector is provided with external thread in two ends about in the of 4, center section is provided with the outer-hexagonal projection, outer-hexagonal projection upper and lower surface is respectively equipped with the annular ditch groove of mounting O-shaped rings, following annular ditch groove is settled an O type circle 3, realize the sealing of long tube gas cylinder and transition threaded connector 4, top annular ditch groove is settled the 2nd O type circle 5, realizes the sealing of transition threaded connector 4 and water jacket plug 1 lower surface.The upper external screw thread of transition threaded connector 4 is connected with gland nut 2, and its lower end external thread is connected with long tube gas cylinder mouth of pipe internal thread.The inside of transition threaded connector 4 is through hole, and its upper end is provided with internal thread, cooperates with the external thread of pressure testing threaded connector.
Principle of work of the present invention and the course of work
1, long tube gas cylinder puts in place.
2, an O type circle 3 and the 2nd O type circle 5 are placed respectively the upper lower groove of transition threaded connector 4.
3, the lower end with transition threaded connector 4 screws in long tube gas cylinder mouth of pipe internal thread and tightens the sealing of realization transition threaded connector 4 and long tube gas cylinder 8 bottlenecks.
4, the endoporus aligning with water jacket plug 1 entangles transition threaded connector 4 upper external screw threads.
5, gland nut 2 is connected with transition threaded connector 4 upper external screw threads and tightens, compress water jacket plug 1, realize the sealing between water jacket plug 1 lower surface and the transition threaded connector 4.
6, water jacket plug 1 and the long tube gas cylinder 8 that is attached thereto are put into water jacket 7 (water jacket 7 has been filled with water), water jacket plug 1 places the upper surface of bellows seal device 6, can carry out in the long tube gas cylinder a series of hydrostatic test outside measurement running programs such as water filling this moment.
7, the hydraulic testing is complete, and long tube gas cylinder 8 is stretched out water jacket 7, unclamps gland nut 2, takes out water jacket plug 1, unloads transition threaded connector 4 again, shifts out long tube gas cylinder 8.A working cycle finishes.
8, bellows seal device 6 patent applied fors, the patent No. is: 200910032788.3; The bellows seal device is made of lower flange, skeleton, air bag and upper flange, and upper lower flange and skeleton, air bag are threaded connection and are integrated, and skeleton plays a supportive role to air bag.
Claims (4)
1. sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method, comprise the bellows seal device, water jacket plug (1), described water jacket plug (1) is placed on the upper surface of bellows seal device, it is characterized in that: also comprise gland nut (2), the one O type circle (3), transition threaded connector (4), the 2nd O type circle (5), described transition threaded connector (4) is respectively equipped with external thread in two ends up and down, the bore area of gland nut (2) is provided with internal thread, the upper external screw thread of described transition threaded connector (4) is connected with gland nut (2), and its lower end external thread is connected with long tube gas cylinder mouth of pipe internal thread;
Described transition threaded connector (4) center section is provided with the outer-hexagonal projection, outer-hexagonal projection upper and lower surface is respectively equipped with annular ditch groove, settle an O type circle (3) in the following annular ditch groove, realize the sealing of long tube gas cylinder and transition threaded connector (4), settle the 2nd O type circle (5) in the top annular ditch groove, realize the sealing of transition threaded connector (4) and water jacket plug (1) lower surface.
2. sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method as claimed in claim 1, it is characterized in that: the inside of described transition threaded connector (4) is through hole, the through hole upper end is provided with internal thread, cooperates with the external thread of pressure testing threaded connector.
3. sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method as claimed in claim 1, it is characterized in that: the center of described water jacket plug (1) is provided with manhole, the turnover of test(ing) medium during in order to the hydraulic testing.
4. sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method as claimed in claim 1 is characterized in that: described gland nut (2) upper end is large, and the lower end is little; Its upper end is made to outer-hexagonal shape, and its lower end is provided with chamfering, and outside surface is made to the face of cylinder in the middle of it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110278823 CN102346111B (en) | 2011-09-20 | 2011-09-20 | Sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110278823 CN102346111B (en) | 2011-09-20 | 2011-09-20 | Sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102346111A CN102346111A (en) | 2012-02-08 |
| CN102346111B true CN102346111B (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110278823 Expired - Fee Related CN102346111B (en) | 2011-09-20 | 2011-09-20 | Sealing device of water pressure testing machine in long-pipe gas-cylinder outer measurement method |
Country Status (1)
| Country | Link |
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| CN (1) | CN102346111B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162970A (en) * | 2018-10-19 | 2019-01-08 | 成都中寰流体控制设备股份有限公司 | A kind of closed fuel tank self-compensating pressure method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2935115Y (en) * | 2006-08-04 | 2007-08-15 | 杭州金牛机械设备有限公司 | Gas cylinder water pressure testing device |
| CN101581643A (en) * | 2009-06-08 | 2009-11-18 | 无锡昌华机电制造有限公司 | Water jacket and air bag type sealing device for hydraulic test of air bottle outside measuring method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08226555A (en) * | 1995-02-21 | 1996-09-03 | Hikari Gokin Seisakusho:Kk | Back flow prevention type drain plug having valve seat |
| CN202256027U (en) * | 2011-09-20 | 2012-05-30 | 无锡昌华机电制造有限公司 | Sealing device of water-jacket-method hydrostatic testing machine for gas cylinders with long pipes |
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2011
- 2011-09-20 CN CN 201110278823 patent/CN102346111B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2935115Y (en) * | 2006-08-04 | 2007-08-15 | 杭州金牛机械设备有限公司 | Gas cylinder water pressure testing device |
| CN101581643A (en) * | 2009-06-08 | 2009-11-18 | 无锡昌华机电制造有限公司 | Water jacket and air bag type sealing device for hydraulic test of air bottle outside measuring method |
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| Publication number | Publication date |
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| CN102346111A (en) | 2012-02-08 |
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Granted publication date: 20131030 Termination date: 20180920 |