CN201818799U - Sealing structure of oil cylinder in ultrahigh pressure press - Google Patents
Sealing structure of oil cylinder in ultrahigh pressure press Download PDFInfo
- Publication number
- CN201818799U CN201818799U CN2010205774701U CN201020577470U CN201818799U CN 201818799 U CN201818799 U CN 201818799U CN 2010205774701 U CN2010205774701 U CN 2010205774701U CN 201020577470 U CN201020577470 U CN 201020577470U CN 201818799 U CN201818799 U CN 201818799U
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- pressure
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Abstract
The utility model discloses a sealing structure of an oil cylinder in an ultrahigh pressure pressing machine. The sealing structure comprises an oil cylinder and a plunger, wherein at least three sealing grooves are formed on the inner wall at one end of the oil cylinder, a pressure expansion type sealing ring is mounted in at least one sealing groove, a top ring and a pressure ring are respectively arranged on both sides of the pressure expansion type sealing ring, a ring-shaped oil cylinder cover is connected to the end part of the oil cylinder, one end of the oil cylinder cover is in compression spliced on the pressure ring positioned at the end part of the oil cylinder, and a ring-shaped oil cylinder dust cap is arranged at the other end of the oil cylinder cover. By adopting the structure, the higher the pressure in the oil cylinder is, the better the sealing property of the oil cylinder is, and the sealing structure is simple. By adopting the sealing structure, the size, the width and the length of the working platform of an oil hydraulic press with the tonnage of 50 thousand to 500 thousand tons can be increased at random, so that the requirements of China-made large aircrafts, warplanes, and other heavy equipment can be satisfied.
Description
Technical field
The utility model relates to the sealing configuration of oil cylinder in the press, is specifically related to a kind of ultrahigh pressure press cylinder seal structure.
Background technique
Owing to the restriction of press cylinder seal structure, domestic employed press pressure is all below 31.5Mpa at present.Because the restriction of pressure makes the manufacturing of great tonnage press be subjected to limit restriction.China designs the 8 ton drop presses of making voluntarily and is known as world's tonnage maximum, but table top size (4 * 8 meters) is not maximum, reason be exactly this press be limit design.Two meters of this press strokes are not very big, but his total height is above 38 meters.So the column pull bar whole world can't produce, can only splice with maximum steel plate, every 250 tons, 5 one group, four groups 20,5000 tons of weights.So needing a few kiloton steel makes and cost tens RMB.Adopt the ultrahigh pressure design if can improve the cylinder seal structure of press, make its pressure adjustable from 31.5Mpa to 120Mpa, under equal two meters strokes.Total height is no more than 20 meters, but the tonnage super large, and the table top dimension width can (5-20 rice) length can arbitrarily increase from 50,000 tons to 500,000 tons, can satisfy homemade big aircraft, the demand of refitting such as military aircraft equipment.To the drawing machine (current maximum 6000 tons) of domestic large-scale steel pipe manufacturing enterprise, also can manufacture the large-tonnage large scale simultaneously.
Press generally is made up of upper beam, sliding beam, bottom end rail, column, oil cylinder.The size of the size of cylinder diameter decision tonnage has the artificer to consider decision according to optimization, generally uses single cylinder below 1000 tons, uses the 3-5 cylinder below 10000 tons, uses multi-cylinder more than 10000 tons.Yet one of key issue of the press design of large-tonnage ultrahigh pressure is exactly the sealed against leakage that solves oil cylinder.How to improve the sealing configuration of oil cylinder, making it be adapted to the pressure of ultrahigh pressure and do not occur leaking will be those skilled in the art's technical issues that need to address.
The model utility content
The purpose of this utility model is to overcome the defective that exists in the prior art, designs a kind of cylinder seal structure of ultrahigh pressure press, and this structure can realize that high more its sealability of in-oil cylinder pressure will be good more, and sealing is simple in structure.
For achieving the above object, the technical solution of the utility model is a kind of ultrahigh pressure press cylinder seal structure of design, described sealing configuration comprises oil cylinder and plunger, it is characterized in that, on the inwall of described oil cylinder one end, be provided with the three seals groove at least, at least in a road sealing groove, be equipped with and press the formula seal ring that rises, be respectively equipped with apical ring and pressure ring in the described pressure formula seal ring both sides of rising, also be connected with the annular cylinder lid in the end of described oil cylinder, one end of described oil cylinder cover is crimped on the pressure ring that is positioned at the oil cylinder end, is provided with ring-type oil cylinder dust cover at the other end of described oil cylinder cover.
Wherein, the described pressure formula seal ring that rises comprises that at least one pair of sectional shape is the annulus of right-angled triangle, and leg-of-mutton two hypotenuses in described a pair of right angle fit together relatively, and the cross section amalgamation of two seal rings constitutes the annulus of a rectangular cross-section together.The rise material of formula seal ring of this pressure is the tetrafluoroethylene monomer polymer, and teflon [PTFE, F4] is one of decay resistance optimal material in the world today, therefore ' the plastics king ' laudatory title.It can use for a long time at any kind of chemical mediator, and teflon seal is to select for use suspension polymerisation polyflon molding to be processed into.Teflon is compared with other plastics has resistance to chemical attack and heatproof excellent characteristics, and it has been widely used as sealing material and packing material.
For the sealing effect that strengthens oil cylinder in the utility model, the described pressure formula seal ring that rises can comprise that three pair cross-sections are shaped as the annulus of right-angled triangle, two hypotenuses of every pair of described right-angled triangle fit together relatively, and the cross section amalgamation of every pair of seal ring all constitutes the annulus of a rectangular cross-section together.
Wherein, described apical ring closely is embedded in a big ring by a little ring, and the interior ring of its medium and small ring matches with described plunger, and the outer shroud of big ring matches with the inwall of described seal groove, is provided with the gap between big ring and little ring.
Wherein, described pressure ring is a metal cirque, and a side roof pressure of described metal ring is in a rise side of formula seal ring of described pressure, the side crimping mutually of the opposite side of described metal ring and described annular cylinder lid.
Wherein, cover at described annular cylinder and be provided with radially draining hole.
Wherein, be provided with annular seal groove on the inwall of described annular cylinder dust cover, in described annular seal groove seal ring be housed, the interior ring of described seal ring matches with described plunger.
Wherein, on the inwall of described annular cylinder lid, be provided with a road sealing groove at least, in described seal groove, seal ring is housed, described seal ring is embedded in a big ring by a little ring, the interior ring of its medium and small ring matches with described plunger, the outer shroud of big ring matches with the inwall of described seal groove, is provided with the gap between described big ring and little ring.
Wherein, described annular cylinder lid is connected by bolt with described oil cylinder.
Wherein, in the end of described plunger plunger connector is housed, described plunger connector is connected by bolt with described plunger.
Advantage of the present utility model and beneficial effect are: press the formula seal ring structure that rises owing to having adopted at the utility model, after in-oil cylinder pressure increases, can make a pair of sectional shape is that the annulus of right-angled triangle is along inclined-plane slide relative that it fastens mutually, seal ring after the slip will make seal ring more press close to the seal groove of plunger face and oil cylinder, thereby reach the good more purpose of the big more sealing effect of pressure.Simple in structure being easy to of sealing adds in addition, and the worker is easy to assembling, have tetrafluoroethylene to have superpower anticorrosive wear-resistant again and decrease, and smooth surface can reduce the resistance of plunger operation.Adopt the oil hydraulic press of sealing structure to can be made into from 50,000 tons to 500,000 tons that table top dimension width, length can arbitrarily increase, can satisfy homemade big aircraft, the demand of refitting such as military aircraft equipment.To the drawing machine of domestic large-scale steel pipe manufacturing enterprise, also can manufacture the large-tonnage large scale simultaneously.
Description of drawings
Fig. 1 is the utility model ultrahigh pressure press cylinder seal structural representation;
Fig. 2 is the local enlarged diagram of oil cylinder inner seal liner mounting structure.
Among the figure: 1, oil cylinder, 2, plunger; 3, seal groove; 4, press the formula seal ring that rises; 5, apical ring; 6, pressure ring; 7, oil cylinder cover; 8, oil cylinder dust cover; 9, draining hole; 10, seal groove; 11, seal ring; 12, seal groove; 13, plunger connector; 14, gap.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
The utility model is a kind of ultrahigh pressure press cylinder seal structure, the sealing structure comprises oil cylinder 1 and plunger 2, it is characterized in that, on the inwall of described oil cylinder 1 one ends, be provided with three seals groove 3 at least, at least in a road sealing groove 3, be equipped with and press the formula seal ring 4 that rises, be respectively equipped with apical ring 5 and pressure ring 6 in described pressure formula seal ring 4 both sides of rising, also be connected with the oil cylinder cover 7 of annular in the end of described oil cylinder 1, one end of described oil cylinder cover 7 is crimped on the pressure ring 6 that is positioned at the oil cylinder end, is provided with the oil cylinder dust cover 8 of ring-type at the other end of described oil cylinder cover 7.
Embodiment 2
On embodiment 1 basis, the described pressure formula seal ring 4 that rises comprises that at least one pair of sectional shape is the annulus of right-angled triangle, leg-of-mutton two hypotenuses in described a pair of right angle fit together relatively, the cross section amalgamation of two seal rings constitutes the annulus of a rectangular cross-section together, and all the other and embodiment's 1 structure is identical.This structure is after in-oil cylinder pressure increases, can make a pair of sectional shape is that the annulus of right-angled triangle is along inclined-plane slide relative that it fastens mutually, seal ring after the slip will make seal ring more press close to the seal groove of plunger face and oil cylinder, thereby reach the good more purpose of the big more sealing effect of pressure.The rise material of formula seal ring of this pressure is the tetrafluoroethylene monomer polymer, and teflon [PTFE, F4] is one of decay resistance optimal material in the world today, therefore ' the plastics king ' laudatory title.It can use for a long time at any kind of chemical mediator, and teflon seal is to select for use suspension polymerisation polyflon molding to be processed into.Teflon is compared with other plastics has resistance to chemical attack and heatproof excellent characteristics, and it has been widely used as sealing material and packing material.
On embodiment 1 basis, for the sealing effect that strengthens oil cylinder in the utility model, the described pressure formula seal ring 4 that rises can be shaped as the annulus of right-angled triangle with three pair cross-sections, two hypotenuses of every pair of described right-angled triangle fit together relatively, the cross section amalgamation of every pair of seal ring all constitutes the annulus of a rectangular cross-section together, and all the other and embodiment's 1 structure is identical.
On embodiment 1 basis, described apical ring 5 closely is embedded in a big ring by a little ring, the interior ring of its medium and small ring matches with described plunger 2, the outer shroud of big ring matches with the inwall of described seal groove 3, between big ring and little ring, be provided with gap 14, this gap makes the pressure increase back in the oil cylinder 1 encircle greatly and little ring difference spreading, can make big ring and seal groove 3 be adjacent to little ring and plunger 2 is adjacent to, can reach the good more purpose of the big more sealing effect of pressure so too, all the other and embodiment's 1 structure is identical.
On embodiment 1 basis, described pressure ring 6 is the tin bronze metal cirque, one side roof pressure of described metal ring is in a rise side of formula seal ring of described pressure, the side crimping mutually of the opposite side of described metal ring and described annular cylinder lid, and all the other and embodiment's 1 structure is identical.
On embodiment 1 basis, on the oil cylinder cover 7 of described annular, be provided with radially draining hole 9, this draining hole 9 is used for a spot of leakage oil is discharged, and all the other and embodiment's 1 structure is identical.
On embodiment 1 basis, on the inwall of described annular cylinder dust cover, be provided with annular seal groove 10, in described annular seal groove 10 seal ring 11 is housed, the interior ring of described seal ring 11 matches with described plunger, and all the other and embodiment's 1 structure is identical.
On embodiment 1 basis, on the inwall of described annular cylinder lid, be provided with a road sealing groove 12 at least, in described seal groove 12, seal ring 13 is housed, described seal ring is embedded in a big ring by a little ring, the interior ring of its medium and small ring matches with described plunger 2, the outer shroud of big ring matches with the inwall of described seal groove 12, between big ring and little ring, be provided with gap 14, this gap 14 makes in-oil cylinder pressure increase back encircle greatly and little ring difference spreading, can make big ring and seal groove 12 be adjacent to little ring and plunger 2 is adjacent to, can reach the good more purpose of the big more sealing effect of pressure so too, all the other and embodiment's 1 structure is identical.
On embodiment 1 basis, described annular cylinder lid 7 and described oil cylinder 1 are connected by bolt, and all the other and embodiment's 1 structure is identical.
On embodiment 1 basis, in the end of described plunger 2 plunger connector 13 is housed, described plunger connector 13 and described plunger 2 are connected by bolt, and all the other and embodiment's 1 structure is identical.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. ultrahigh pressure press cylinder seal structure, described sealing configuration comprises oil cylinder and plunger, it is characterized in that, on the inwall of described oil cylinder one end, be provided with the three seals groove at least, at least in a road sealing groove, be equipped with and press the formula seal ring that rises, be respectively equipped with apical ring and pressure ring in the described pressure formula seal ring both sides of rising, also be connected with the annular cylinder lid in the end of described oil cylinder, one end of described oil cylinder cover is crimped on the pressure ring that is positioned at the oil cylinder end, is provided with ring-type oil cylinder dust cover at the other end of described oil cylinder cover.
2. ultrahigh pressure press cylinder seal structure as claimed in claim 1, it is characterized in that, the described pressure formula seal ring that rises comprises that at least one pair of sectional shape is the annulus of right-angled triangle, leg-of-mutton two hypotenuses in described a pair of right angle fit together relatively, and the cross section amalgamation of two seal rings constitutes the annulus of a rectangular cross-section together.
3. ultrahigh pressure press cylinder seal structure as claimed in claim 1, it is characterized in that, the described pressure formula seal ring that rises comprises that three pair cross-sections are shaped as the annulus of right-angled triangle, two hypotenuses of every pair of described right-angled triangle fit together relatively, and the cross section amalgamation of every pair of seal ring all constitutes the annulus of a rectangular cross-section together.
4. ultrahigh pressure press cylinder seal structure as claimed in claim 1, it is characterized in that, described apical ring closely is embedded in a big ring by a little ring, the interior ring of its medium and small ring matches with described plunger, the outer shroud of big ring matches with the inwall of described seal groove, is encircling greatly and little ring is provided with the gap between joining.
5. ultrahigh pressure press cylinder seal structure as claimed in claim 1, it is characterized in that, described pressure ring is a metal cirque, and a side roof pressure of described metal ring is in a rise side of formula seal ring of described pressure, the side crimping mutually of the opposite side of described metal ring and described annular cylinder lid.
6. ultrahigh pressure press cylinder seal structure as claimed in claim 1 is characterized in that, covers at described annular cylinder and is provided with radially draining hole.
7. ultrahigh pressure press cylinder seal structure as claimed in claim 1 is characterized in that, is provided with annular seal groove on the inwall of described annular cylinder dust cover, in described annular seal groove seal ring is housed, and the interior ring of described seal ring matches with described plunger.
8. ultrahigh pressure press cylinder seal structure as claimed in claim 1, it is characterized in that, on the inwall of described annular cylinder lid, be provided with a road sealing groove at least, in described seal groove, seal ring is housed, described seal ring is embedded in a big ring by a little ring, the interior ring of its medium and small ring matches with described plunger, and the outer shroud of big ring matches with the inwall of described seal groove, is provided with the gap between described big ring and little ring.
9. ultrahigh pressure press cylinder seal structure as claimed in claim 1 is characterized in that, described annular cylinder lid is connected by bolt with described oil cylinder.
10. ultrahigh pressure press cylinder seal structure as claimed in claim 1 is characterized in that in the end of described plunger plunger connector is housed, described plunger connector is connected by bolt with described plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205774701U CN201818799U (en) | 2010-10-27 | 2010-10-27 | Sealing structure of oil cylinder in ultrahigh pressure press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205774701U CN201818799U (en) | 2010-10-27 | 2010-10-27 | Sealing structure of oil cylinder in ultrahigh pressure press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201818799U true CN201818799U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205774701U Expired - Fee Related CN201818799U (en) | 2010-10-27 | 2010-10-27 | Sealing structure of oil cylinder in ultrahigh pressure press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201818799U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305293A (en) * | 2011-08-17 | 2012-01-04 | 益阳橡胶塑料机械集团有限公司 | Sealing device of hydraulic cylinder |
| CN103016744A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Ultralow-temperature high-pressure dynamic sealing structure |
-
2010
- 2010-10-27 CN CN2010205774701U patent/CN201818799U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305293A (en) * | 2011-08-17 | 2012-01-04 | 益阳橡胶塑料机械集团有限公司 | Sealing device of hydraulic cylinder |
| CN103016744A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Ultralow-temperature high-pressure dynamic sealing structure |
| CN103016744B (en) * | 2012-12-08 | 2016-01-20 | 中国航天科技集团公司第六研究院第十一研究所 | Ultralow temperature high pressure dynamic sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20110504 Termination date: 20171027 |