CN209943728U - Can dismantle and embrace a tub sealing connection structure - Google Patents
Can dismantle and embrace a tub sealing connection structure Download PDFInfo
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- CN209943728U CN209943728U CN201920552866.1U CN201920552866U CN209943728U CN 209943728 U CN209943728 U CN 209943728U CN 201920552866 U CN201920552866 U CN 201920552866U CN 209943728 U CN209943728 U CN 209943728U
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- sealing connection
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Abstract
The utility model discloses a detachable holding pipe sealing connection structure, which is used for connecting and sealing the gas output end of a system assembling connection component and one end of a conduit and comprises a connector connected on the gas output end of the system assembling connection component; the fixing structure is detachably connected with the side wall of the guide pipe in a sealing way; and the pushing structure is used for performing extrusion sealing on the joint and the fixed structure. The utility model discloses have convenient dismantlement, the good characteristics of pressure-bearing sealing performance concurrently, same pipe still can keep good pressure-bearing sealing performance after assembling several times with fixed knot structure.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal connects, concretely relates to can dismantle and embrace tub sealing connection structure.
Background
Complex fluid control systems require conduits to form gas paths, conduits and systemsThe system assembly connection part can reliably bear pressure and seal (bearing pressure is 1.0MPa, and the sealing performance is better than 1.0 multiplied by 10) after experiencing the use working conditions (temperature, vibration, impact and the like) of the system-7Pa.m 3/s), and part of the guide pipes need to meet the functional requirement of remounting after experiencing the use working condition of the system, so a detachable pipe holding sealing connection structure needs to be adopted.
At present, the existing pipe holding sealing connection structure mainly has two types: one type is a pipe holding sealing connection structure based on a high polymer material (such as polytetrafluoroethylene) sealing element, the structure is convenient to disassemble, but the bearing sealing capacity is general (generally 10)- 7Pa · m3/s magnitude), and the problem of insufficient sealing capability caused by stress relaxation after the system is subjected to use working conditions; the other type is a pipe holding sealing connection structure based on a metal material (such as copper) sealing element, and the structure has excellent pressure bearing sealing performance (generally better than 10)-7Pa · m3/s), has good adaptability to the use condition of the system, but faces the problem of difficult disassembly.
In order to solve the problems, a detachable pipe holding sealing connection structure is developed by people.
Disclosure of Invention
The utility model aims at providing a can dismantle and embrace a tub sealing connection structure in order to solve above-mentioned problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a can dismantle and embrace sealed connection structure of pipe for the gas output end of system assembling adapting unit seals with being connected of pipe one end, includes:
a connector connected to a gas output end of the system-assembling connection member;
the fixing structure is detachably connected with the side wall of the guide pipe in a sealing way;
and the pushing structure is used for performing extrusion sealing on the joint and the fixed structure.
Specifically, the fixing structure is sleeved on the side wall of the catheter and made of memory alloy, and the fixing structure is heated to generate phase change shrinkage to hold the catheter tightly.
Further, the first end of the fixing structure is formed into a conical surface; the inner side of the first end of the joint is in extrusion sealing fit with the first end of the fixing structure.
Further, a sealing cone gasket for sealing is arranged between the inner side surface of the end part of the joint and the first end of the fixing structure.
Specifically, the propelling structure comprises a threaded sleeve, the threaded sleeve is in threaded matching connection with the connector, a tight abutting portion is arranged on the threaded sleeve, and the tight abutting portion is used for abutting against a second end of the fixing structure when the threaded sleeve is screwed in towards the connector direction.
Furthermore, an internal thread is arranged inside the first end of the threaded sleeve, and an external thread is arranged outside the first end of the joint.
Preferably, two anti-rotation gaskets for offsetting the screw sleeve to transmit the screwing torque to the fixing structure are further arranged between the abutting part and the second end of the fixing structure, and the small end faces of the two anti-rotation gaskets are attached to each other.
Specifically, the threaded sleeve and the anti-rotation gasket are sleeved on the guide pipe in a penetrating manner.
Preferably, the first end conical surface of the fixing structure has a cone angle of 55 °; the conical surface inside the first end of the joint has a cone angle of 60 deg..
Preferably, the cone angle of the sealing cone gasket is 60 °.
The beneficial effects of the utility model reside in that:
the utility model discloses a can dismantle and embrace tub sealing connection structure:
the pipe has the characteristics of convenient disassembly and excellent pressure-bearing sealing performance, and the same pipe can still keep excellent pressure-bearing sealing performance after being assembled with the fixed structure for a plurality of times.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the device comprises a connector, 2, a sealing conical gasket, 3, a fixing structure, 4, an anti-rotation gasket, 5, a threaded sleeve, 6 and a conduit.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
example 1, as shown in figure 1:
a can dismantle and embrace sealed connection structure of pipe for the gas output end of system assembling adapting unit seals with being connected of pipe 6 one end, includes:
a connector 1 connected to a gas output end of the system assembling connection member;
a fixing structure 3 which is detachably connected with the side wall of the conduit 6 in a sealing way;
and the pushing structure is used for performing extrusion sealing on the joint 1 and the fixed structure 3.
In this embodiment, one end of the connector 1 is directly connected to the gas output end of the system assembling connection component, the inside of the fixing structure 3 is detachably and hermetically assembled with the side wall of the conduit 6, the outside of the fixing structure 3 is also pressed and sealed with the connector 1 under the action of the propelling structure, and under the matching and sealing structure, the gas output from the gas output end of the system assembling connection component to the conduit 6 cannot leak at the connection part of the conduit 6 and the system assembling connection component;
the sealing between the fixing structure 3 and the conduit 6 can be selected as that a mechanical mechanism acts on the fixing structure 3 to extrude and seal between the fixing structure 3 and the conduit 6, and the fixing structure 3 is also separated from the conduit 6 when the force is lost;
example 2, as shown in figure 1:
this example differs from example 1 in that: the fixing structure 3 is sleeved on the side wall of the catheter 6, the fixing structure 3 is made of memory alloy, the fixing structure 3 is heated, and the fixing structure 3 generates phase change shrinkage to hold the catheter 6 tightly.
The use mode is that the fixing structure 3 is firstly sleeved on the guide pipe 6 and is moved to a certain position on the guide pipe 6, the fixing structure 3 is heated to generate phase change shrinkage to hold the guide pipe 6 tightly, the sealing connection between the inside of the fixing structure 3 and the guide pipe 6 is achieved, then the guide pipe 6 is inserted into an inner hole of the joint 1, and then the sealing between the outside of the fixing structure 3 and the joint 1 is carried out. During disassembly, the conduit 6 is removed from the inner hole of the joint 1, the part of the fixing structure 3 is soaked in liquid nitrogen (or cooled in other ways), and the fixing structure 3 is separated from the conduit 6.
Example 3, as shown in figure 1:
this example differs from example 1 or example 2 in that: the first end of the fixed structure 3 is formed into a conical surface; the inner side of the first end of the joint 1 is in press-sealing fit with the first end of the fixed structure 3.
The shape of the first end of the fixing structure 3 and the shape of the inner side of the first end of the joint 1 and the way they cooperate is to better match the compression of the pushing structure between the fixing structure 3 and the joint 1, and this compression will really and effectively seal the connection between the outside of the fixing structure 3 and the joint 1.
Example 4, as shown in figure 1:
this example differs from example 3 in that: a sealing cone 2 for sealing is also arranged between the inner side surface of the end of the joint 1 and the first end of the fixed structure 3.
When the device works, the pushing structure pushes and extrudes to enable the sealing conical pad 2 between the joint 1 and the fixing structure 3 to generate extrusion deformation, so that the connecting and sealing functions of the joint 1 and the connecting part of the conduit 6 are better realized.
Example 5, as shown in figure 1:
this example differs from example 4 in that: the propelling structure comprises a threaded sleeve 5, the threaded sleeve 5 is in threaded matching connection with the connector 1, a tight supporting part is arranged on the threaded sleeve 5, and the tight supporting part is used for supporting and tightly acting on the second end of the fixing structure 3 when the threaded sleeve 5 is screwed in towards the direction of the connector 1.
When the screw sleeve 5 is screwed to the connector 1 in a reverse screwing way, the screw sleeve pushes the fixing structure 3 to be connected with the connector 1 in an extrusion sealing way through the abutting part; when the disassembly is needed, the screw sleeve 5 rotates reversely; the abutting part is preferably an inward annular protrusion at one end of the screw sleeve 5 far away from the joint 1; the second end of the fixing structure 3 is preferably a flat surface, which in this embodiment is preferably divided into a cylindrical section, which is distal from the joint 1, and a conical section, which is proximal to the joint 1. Furthermore, the outer wall of the screw sleeve 5 is preferably hexagonal in shape, so that a defined tightening torque can be applied to it.
Example 6, as shown in figure 1:
this example differs from example 5 in that: an internal thread is arranged in the first end of the screw sleeve 5, and an external thread is arranged on the outer side of the first end of the joint 1.
Example 7, as shown in figure 1:
this example differs from example 5 or example 6 in that: two anti-rotation gaskets 4 used for offsetting the screw sleeve 5 to transmit the screwing torque to the fixing structure 3 are further arranged between the abutting part and the second end of the fixing structure 3, and the small end faces of the two anti-rotation gaskets 4 are attached.
The anti-rotation gasket 4 is similar to a plain washer (GB/T97.1-2002) in structural shape, one end of the anti-rotation gasket is a small circular end face for an excircle chamfer, the other end of the anti-rotation gasket is a large circular end face for an inner hole chamfer, and the small circular end faces of the two anti-rotation gaskets 4 are assembled in a fitting mode during use to play a role in eliminating torsion. According to the test result, the fixing structure 3 has better axial tension force resistance, but the anti-torsion capacity is weaker, and the anti-rotation gasket 4 is used for reducing the torsion force generated when the thread sleeve 5 is screwed down and acting on the fixing structure 3.
Example 8, as shown in figure 1:
this example differs from example 7 in that: the threaded sleeve 5 and the anti-rotation gasket 4 are sleeved on the guide pipe 6 in a penetrating way.
During this application assembly, swivel nut 5, prevent changeing gasket 4, fixed knot structure 3, sealed awl pad 2 suit in proper order and go into pipe 6, and fixed knot constructs 3 and moves to the target position after, and heating fixed knot constructs 3 and makes it produce the phase transition shrink and hold pipe 6 tightly, and pipe 6 inserts and connects 1 hole, screws up swivel nut 5 and makes sealed awl pad 2 produce extrusion deformation between joint 1 and the fixed knot structure 3, realizes the hookup and the sealed function of connecting the position of joint 1 and pipe 6. During disassembly, the threaded sleeve 5 is unscrewed, the conduit 6 is moved out of the inner hole of the joint 1, the part of the fixed structure 3 is soaked in liquid nitrogen, the fixed structure 3 is separated from the conduit 6, and the fixed structure 3, the anti-rotation gasket 4 and the threaded sleeve 5 are taken down.
Example 9:
this example differs from example 3 in that: the cone angle of the first end conical surface of the fixed structure 3 is 55 degrees; the conical surface inside the first end of the joint 1 has a cone angle of 60.
According to the design experience in the field, the taper angle of the taper surface of the matched part is required to have an angular difference which is usually a few degrees in a reliable taper surface sealing design. The cone angle design value of the conical surface of the fixed structure is 55 degrees, and the cone angles of different parts of the conical surface after processing, heating and assembling are 52-56 degrees; the joint is an machined part, and the measured value of the taper angle has small deviation from the designed value of 60 degrees. According to a great amount of test results at present, the design according to the 55-degree taper angle can meet the requirements of repeated detachability, sealing and the like, and the 55-degree taper angle design has the advantage of reducing the influence of large change of the taper angles of different parts on the sealing property after the fixed structure is assembled.
Example 10:
this example differs from example 4 in that: the cone angle of the sealing cone gasket 2 is 60 degrees.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a can dismantle and embrace sealed connection structure of pipe for the gas output end of system assembling adapting unit is sealed with being connected of pipe one end, its characterized in that: the method comprises the following steps:
a connector connected to a gas output end of the system-assembling connection member;
the fixing structure is detachably connected with the side wall of the guide pipe in a sealing way;
and the pushing structure is used for performing extrusion sealing on the joint and the fixed structure.
2. The detachable pipe holding sealing connection structure of claim 1, wherein: the fixing structure is sleeved on the side wall of the catheter and made of memory alloy, and the fixing structure is heated to generate phase change shrinkage to hold the catheter tightly.
3. A detachable pipe holding sealing connection structure according to claim 1 or 2, wherein: the first end of the fixing structure is formed into a conical surface; the inner side of the first end of the joint is in extrusion sealing fit with the first end of the fixing structure.
4. The detachable pipe holding sealing connection structure of claim 3, wherein: a sealing conical gasket for sealing is also arranged between the inner side surface of the end part of the joint and the first end of the fixing structure.
5. The detachable pipe holding sealing connection structure of claim 4, wherein: the propelling structure comprises a threaded sleeve, the threaded sleeve is in threaded matching connection with the connector, a tight supporting part is arranged on the threaded sleeve, and the tight supporting part is used for supporting and tightly acting on the second end of the fixing structure when the threaded sleeve is screwed in towards the connector direction.
6. A detachable pipe holding sealing connection structure according to claim 5, wherein an internal thread is arranged inside the first end of the screw sleeve, and an external thread is arranged outside the first end of the connector.
7. A detachable pipe holding sealing connection structure according to claim 5 or 6, wherein two anti-rotation gaskets for offsetting the screw sleeve to transmit the tightening torque to the fixing structure are further arranged between the abutting portion and the second end of the fixing structure, and small end faces of the two anti-rotation gaskets are attached.
8. The detachable pipe holding sealing connection structure of claim 7, wherein: the threaded sleeve and the anti-rotation gasket are sleeved on the guide pipe in a penetrating way.
9. The detachable pipe holding sealing connection structure of claim 3, wherein: the taper angle of the first end conical surface of the fixed structure is 55 degrees; the conical surface inside the first end of the joint has a cone angle of 60 deg..
10. The detachable pipe holding sealing connection structure of claim 4, wherein: the cone angle of the sealing cone gasket is 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920552866.1U CN209943728U (en) | 2019-04-23 | 2019-04-23 | Can dismantle and embrace a tub sealing connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920552866.1U CN209943728U (en) | 2019-04-23 | 2019-04-23 | Can dismantle and embrace a tub sealing connection structure |
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| Publication Number | Publication Date |
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| CN209943728U true CN209943728U (en) | 2020-01-14 |
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| CN201920552866.1U Active CN209943728U (en) | 2019-04-23 | 2019-04-23 | Can dismantle and embrace a tub sealing connection structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869549A (en) * | 2019-04-23 | 2019-06-11 | 中国工程物理研究院总体工程研究所 | A kind of detachable holding tube Hermetical connecting structure |
-
2019
- 2019-04-23 CN CN201920552866.1U patent/CN209943728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869549A (en) * | 2019-04-23 | 2019-06-11 | 中国工程物理研究院总体工程研究所 | A kind of detachable holding tube Hermetical connecting structure |
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