CN203082536U - Top pressure type differential motion seal connecting interface - Google Patents
Top pressure type differential motion seal connecting interface Download PDFInfo
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- CN203082536U CN203082536U CN 201320031653 CN201320031653U CN203082536U CN 203082536 U CN203082536 U CN 203082536U CN 201320031653 CN201320031653 CN 201320031653 CN 201320031653 U CN201320031653 U CN 201320031653U CN 203082536 U CN203082536 U CN 203082536U
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Abstract
The utility model relates to a gas or liquid seal connecting interface. The top pressure type differential motion seal connecting interface comprises an upper body (1), a top core (2), a spring (3), pistons (4), a lower body (5), sealing rings (6) and end face seal pieces (7), wherein the upper body is of a head shoulder shape, the head of the upper body is provided with a plurality of through holes along the center periphery, the shoulder part of the upper body is internally provided with a hollow cavity, and a plurality of through holes are communicated with the hollow cavity; the upper part of the lower body is sleeved on the lower part of the upper body, the lower body is internally provided with a hollow cavity, and the bottom of the lower body is provided with a through port; and the upper body inner cavity and the lower body inner cavity form a piston cavity, the piston cavity is internally provided with the springs and the pistons, the middle parts of the pistons are provided with through holes, top cores are placed in the through holes, and one ends of the top cores pass through the spring and then are fixed at the inner center part in the upper body; the area of the upper part of each piston is large, the area of the lower part of each piston is small, and the upper part of each piston is provided with the sealing ring which is combined with a piston cavity wall so as to form radial seal; and the bottoms of the lower parts of the pistons are provided with the end face seal pieces, and the end face seal pieces and external connecting pieces form end plane seal.
Description
Technical field
The utility model relates to a kind of gas or liquid seal connection interface, relates in particular to a kind of differential interface that is tightly connected.
Background technique
The pressure connection interface of existing gas or liquid generally adopts radial seal and axial seal.Radial seal adopts taper pipe thread to add that band material or sealer seal, and perhaps directly adopt the radial direction seal ring sealing; Axial seal is adopted single start thread to seal firmly or is added the thread type sealing of seal ring, perhaps directly adopts the bolt group to seal firmly or adds the flange-type sealing of seal ring.The common drawback of these two kinds of sealing means is: tighten the fixing sealing force of generation by screw thread or bolt group, reach sealing effect; After its sealing, two end-to-end joinies are to do relative movement, otherwise will leak or have leakage hidden danger.Along with interface is subjected to affected by high for a long time, sealing surface is yielding, and sealing force descends, and this moment, jointing can produce leakage.Also can't solve simultaneously latter two end-to-end joint of sealing and do relative axial motion again, as back down or puncture diaphragm.
For the connecting body of the band diaphragm seal that contains high-pressure medium, existing connection interface can only be accomplished to back down earlier or puncture, and then sealing, and the high-pressure medium leakage rate was big when connected this moment, poor stability, and the poor reliability that under high pressure is connected and sealed.As changing family when breeding fish connecing with carbon dioxide diaphragm seal gas cylinder, can leak moment when puncturing, can shorten gas cylinder service time, bad as sealing again, can leak in a large number and freeze the frostbite finger.As polluting when being connected with containing, there is potential safety hazard in the operator with the gas cylinder of aggressive medium.
Summary of the invention
The purpose of this utility model is to provide a kind of roof pressing type the differential interface that is tightly connected, and this connection interface can be used safely on the gas cylinder of one-way valve with pressure or band seal membrane.
In order to realize above-mentioned technical purpose, the utility model adopts following technological scheme:
The differential interface that is tightly connected of a kind of roof pressing type, comprise upper body, plunger tip, spring, piston, following body, seal ring and edge face sealing member, described upper body is a Head and Shoulders, and head is along having several through holes on the circumference at center, shoulder shape inside is cavity, and several through holes communicate with cavity; Following body top is socketed in the upper body bottom, and following body interior is a cavity, and following body bottom has port;
Described upper body inner chamber and following chamber body constitute piston cavity, spring and piston are housed in the piston cavity, both ends of the spring is interior top of chamber of butt upper body and piston head respectively, have through hole in the middle of the piston, place plunger tip in the through hole, through-hole diameter is greater than the plunger tip diameter, plunger tip one end passes spring and is fixed in central part in the upper body, piston is that the top area is big, the bottom area is little, seal ring is housed on piston top and the piston cavity wall constitutes radial seal, edge face sealing member is equipped with in the bottom of piston bottom, and edge face sealing member and joint outer part constitute the Transverse plane sealing.
Described body top down is socketed in the upper body bottom, between the two for being threaded.
Described edge face sealing member is installed in the piston base groove, and edge face sealing member outer side portion is sleeved on the end face pressure ring of piston base and pushes down.
Described body down bottom port diameter is greater than the edge face sealing member diameter.
The described upper body head outside has outside thread, and port inboard, following body bottom has internal thread.
The utility model afterwards backs down logical the pressure by sealing earlier, can use safely on the gas cylinder of one-way valve with pressure or band seal membrane, and no pressure medium leaks in the whole process that connects.The utility model compared with prior art has following good effect:
1) need not can rapidly all kinds of conventional interfaces be carried out safe being connected with band crimping mouth by all kinds of instruments.Press also thereby screw thread is long-term during too big, high, the middle pressure of sealing force when having solved conventional low pressure, the sealing material distortion may make sealing force descend, and causes leakage phenomenon.
2) the pre-sealed structural safety of connection interface and reliable, be applicable to the band high pressure that does not allow dielectric leakage, the occasion that pollution or corrosion are arranged, this connection interface can be with and press connect and can not leak, and has solved such as connection mouth backing down one-way valve, puncturing the sealing problem in the instantaneous pressure releasing course under the situation such as diaphragm.
3) through on the gas cylinder of one-way valve with pressure or band seal membrane, using its attachment security, reliable, nothing leakage.
Description of drawings
Fig. 1 is the differential interface structure schematic representation that is tightly connected of the utility model roof pressing type;
Fig. 2 be among Fig. 1 A-A to sectional view;
Fig. 3 is the structural representation of thimble for plunger tip of the present utility model;
Among the figure: 1 upper body, 2 plunger tips, 3 springs, 4 pistons, 5 times bodies, 6 seal rings, 7 edge face sealing members, 8 end face pressure rings; 9 films, 10 one-way valves, 11 cylinder interfaces.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 to Fig. 3, the differential interface that is tightly connected of a kind of roof pressing type comprises upper body 1, plunger tip 2, spring 3, piston 4, following body 5, seal ring 6, edge face sealing member 7 and end face pressure ring 8; Described upper body 1 is a Head and Shoulders, and head is along having several through holes on the circumference at center, as is six through holes, and six through holes are the center of circle along the capitiform top center point, and diameter is that the circumference of certain value evenly distributes, and shoulder shape inside is cavity, and six through holes communicate with cavity; Following body 5 tops are socketed in upper body 1 bottom, and for being threaded, following body 5 inside are cavity between the two, and following body 5 bottoms have port, and port communicates with following body 5 cavitys.Following body 5 bottoms have a little vent near the bottom, and little vent communicates with following body 5 cavitys.
Described upper body 1 inner chamber and following body 5 inner chambers constitute piston cavity, spring 3 and piston 4 are housed in the piston cavity, piston 4 can slide in piston cavity, spring 3 two ends are butt upper body 1 interior top of chamber and piston 4 tops respectively, have through hole in the middle of the piston 4, place plunger tip 2 in the through hole, through-hole diameter is much larger than plunger tip 2 diameters, plunger tip 2 one ends pass spring 3 and are fixed in central part in the upper body 1, this is fixedly connected can be that plunger tip 2 directly is welded on upper body 1 inside, also can have circular hole and internal thread by central part in upper body 1, plunger tip 2 passes circular hole and is threaded with it.
Described piston 4 is that the top area is big, the bottom area is little, and promptly piston 4 topside areas are big, and bottom area is little; Piston 4 tops are equipped with seal ring 6 and are constituted radial seal with the piston cavity wall, edge face sealing member 7 is equipped with in the bottom of piston 4 bottoms, edge face sealing member 7 is installed in piston 4 base channel, edge face sealing member 7 outer side portions are sleeved on the end face pressure ring 8 of piston 4 bottoms and push down, edge face sealing member 7 is fixed on piston 4 bottoms, and end face pressure ring 8 and piston 4 lower bottom end are for being threaded.Edge face sealing member 7 constitutes Transverse plane sealing, i.e. axial seal with joint outer part.Edge face sealing member 7 diameters are less than described body 5 bottom port diameters down.
Described down body 5 and upper body 1 are for being threaded, and body 5 can be used for the axial displacement of piston 4 under the turn, and following body 5 is also in order to fix and to be connected outside air-path interface, the axial displacement of drive plunger tip 2.Screw down body 5 and make piston 4 and cylinder interface 11 sealings earlier, and continue to screw and to impel plunger tip 2 to puncture film 9.
Gap between upper body 1 several through holes of the differential interface that is tightly connected of roof pressing type of the present utility model, upper body 1 inner chamber, piston 4 inner via holes and the plunger tip 2, body 5 bottom ports are communicated with formation fluid (or gas) passage down.
The described upper body 1 head outside has outside thread and is connected with outer sleeve, and port inboard, following body 5 bottom has internal thread and is connected with joint outer part.Described outer sleeve can be the sleeve pipe of connecting pipeline, can be the meter of joint outer part also, as pressure gauge.Described joint outer part is meant the cylinder interface 11 that has pressure medium, and cylinder interface 11 is an one-way valve 10, and plunger tip then of the present utility model 2 tops are circular, as shown in Figure 1, are convenient to back down one-way valve 10; If cylinder interface 11 is a film 9, plunger tip then of the present utility model 2 tops are aciculiform, and as shown in Figure 3, being convenient to can bursting film 9.
The working principle of the differential interface that is tightly connected of the utility model roof pressing type is:
When connection interface of the present utility model is connected with cylinder interface 11, screw down body 5, force the sealing surface of piston 4 bottom end face Sealings 7 to contact with cylinder interface 11 by spring 3, make piston 4 end faces and cylinder interface 11 end face seals.Then, continue to screw down body 5 again, can impel plunger tip 2 to puncture seal membrane 9, referring to Fig. 3, or impel plunger tip 2 to back down one-way valve 10, referring to Fig. 1.Because end face is sealed, instantaneous pressure all is sealed in the piston cavity, at this moment pressure medium enters sealing area, the pressure reduction that generates by piston 4 causes downwards with joint efforts, produces sealing force automatically, and with change in pressure, because of area difference constant, pressure increases, and sealing force also can strengthen on year-on-year basis, thereby reaches automatic sealing effect.
The pressure reduction that described piston 4 generates be since the radial seal area diameter on piston top greater than the Transverse plane sealing area diameter of piston base, when the medium of band pressure arrives the piston cavity of being made up of upper body and following chamber body, radial seal area in piston top produces downwards makes a concerted effort, greater than upwards making a concerted effort of piston base Transverse plane sealing area, two differences of making a concerted effort produce end face seal power.Jiu Shi promptly Zong the difference of two useful area takes advantage of pressure medium to make a concerted effort and be directed downwards, always to make a concerted effort be exactly the required sealing force of end face for this.Its size is relevant with area difference, relevant with pressure medium.
The effect of described spring 3 is when there be not pressure medium, and spring 3 will produce a little precompressed sealing force earlier, with the joint sealing of piston 4 bottoms and joint outer part.Promptly connection interface of the present utility model seals with joint outer part before the moment that pressure medium grows out of nothing, and therefore pressure medium can not leak.
Described plunger tip 2 is before backing down or puncturing action, the generation of the existing sealing force of connection interface of the present utility model and joint outer part, and formed sealing, so plunger tip 2 is to start working under the state that has sealed, slow and the moment rising of pressure medium can not cause leakage, has guaranteed the safe and reliable of use.
Use on the family of band means of press seals diaphragm breeds fish with dioxide bottle, the result shows that no pressure medium leaks in the whole process that connects, its attachment security, reliable, gas cylinder long service life.
It below only is preferred embodiment of the present utility model; be not to be used to limit protection domain of the present utility model; therefore, all any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. differential interface that is tightly connected of roof pressing type, it is characterized in that: comprise upper body (1), plunger tip (2), spring (3), piston (4), following body (5), seal ring (6) and edge face sealing member (7), described upper body (1) is a Head and Shoulders, head is along having several through holes on the circumference at center, shoulder shape inside is cavity, and several through holes communicate with cavity; Following body (5) top is socketed in upper body (1) bottom, and following body (5) inside is cavity, and following body (5) bottom has port;
Described upper body (1) inner chamber and following body (5) inner chamber constitute piston cavity, spring (3) and piston (4) are housed in the piston cavity, spring (3) two ends are interior top of chamber of butt upper body (1) and piston (4) top respectively, have through hole in the middle of the piston (4), place plunger tip (2) in the through hole, through-hole diameter is greater than plunger tip (2) diameter, plunger tip (2) one ends pass spring (3) and are fixed in the interior central part of upper body (1), piston (4) is that the top area is big, the bottom area is little, piston (4) top is equipped with seal ring (6) and is constituted radial seal with the piston cavity wall, edge face sealing member (7) is equipped with in the bottom of piston (4) bottom, and edge face sealing member (7) constitutes the Transverse plane sealing with joint outer part.
2. the differential interface that is tightly connected of roof pressing type according to claim 1 is characterized in that: described body (5) top down is socketed in upper body (1) bottom, between the two for being threaded.
3. the differential interface that is tightly connected of roof pressing type according to claim 1, it is characterized in that: described edge face sealing member (7) is installed in piston (4) base channel, and edge face sealing member (7) outer side portion is sleeved on the end face pressure ring (8) of piston (4) bottom and pushes down.
4. according to claim 1 or the differential interface that is tightly connected of 2 or 3 described roof pressing types, it is characterized in that: described body (5) down bottom port diameter is greater than edge face sealing member (7) diameter.
5. the differential interface that is tightly connected of roof pressing type according to claim 4 is characterized in that: described upper body (1) the head outside has outside thread, and port inboard, following body (5) bottom has internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031653 CN203082536U (en) | 2013-01-22 | 2013-01-22 | Top pressure type differential motion seal connecting interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031653 CN203082536U (en) | 2013-01-22 | 2013-01-22 | Top pressure type differential motion seal connecting interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203082536U true CN203082536U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320031653 Expired - Lifetime CN203082536U (en) | 2013-01-22 | 2013-01-22 | Top pressure type differential motion seal connecting interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203082536U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712058A (en) * | 2013-01-22 | 2014-04-09 | 上海减压器厂有限公司 | Top tressure type differential seal connecting interface |
| CN104214343A (en) * | 2014-08-15 | 2014-12-17 | 哈尔滨东安发动机（集团）有限公司 | Combined sealing structure |
| CN108905020A (en) * | 2018-07-26 | 2018-11-30 | 浙江利高消防科技有限公司 | A kind of puncture type starting bottle start button and its starting bottle |
-
2013
- 2013-01-22 CN CN 201320031653 patent/CN203082536U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712058A (en) * | 2013-01-22 | 2014-04-09 | 上海减压器厂有限公司 | Top tressure type differential seal connecting interface |
| CN103712058B (en) * | 2013-01-22 | 2016-04-06 | 上海减压器厂有限公司 | The differential interface that is tightly connected of roof pressing type |
| CN104214343A (en) * | 2014-08-15 | 2014-12-17 | 哈尔滨东安发动机（集团）有限公司 | Combined sealing structure |
| CN108905020A (en) * | 2018-07-26 | 2018-11-30 | 浙江利高消防科技有限公司 | A kind of puncture type starting bottle start button and its starting bottle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |