CN113819325B - Quick connector with pressure relief function - Google Patents
Quick connector with pressure relief function Download PDFInfo
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- CN113819325B CN113819325B CN202110970020.1A CN202110970020A CN113819325B CN 113819325 B CN113819325 B CN 113819325B CN 202110970020 A CN202110970020 A CN 202110970020A CN 113819325 B CN113819325 B CN 113819325B
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- pressure relief
- rod
- ring
- pressure
- cylindrical shell
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/0841—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a transversally slidable locking member surrounding the tube
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The quick connector with the pressure relief function comprises a cylindrical shell, wherein a sealing ring is nested at the outer end part of the cylindrical shell, a pressure relief rod is installed in the cylindrical shell, the pressure relief rod axially moves in the cylindrical shell, a supporting ring is nested at the inner end part of the cylindrical shell, a pre-tightening spring is installed in the cylindrical shell, one end of the pre-tightening spring is propped against the supporting ring, and the other end of the pre-tightening spring is propped against the sealing ring; the pressure unloading rod is arranged on the support ring in a penetrating way, the outer end of the pressure unloading rod is matched with the sealing ring to enable the sealing ring to be kept in a gap blocking state between the pressure unloading rod and the cylindrical shell, the tail sleeve is arranged at the inner side end part of the pressure unloading rod, and the pressure relief spring is arranged between the inner side of the support ring and the tail sleeve. The connector independently separates the pressure relief spring from the pre-tightening spring of the sealing ring, the pre-tightening spring independently provides pre-tightening and restoring force for the sealing ring, and the pressure relief spring only provides restoring force for the pressure relief rod, so that the requirements of various pressure relief values and drift diameter combinations can be met.
Description
Technical Field
The invention relates to a quick connector of a liquid cooling system, in particular to a quick connector with a pressure relief function.
Background
The quick connector can realize quick connection or disconnection of a runner of the liquid cooling system without leakage, and is extremely convenient for installation and maintenance. However, when the fluid connector is disconnected, the liquid cooling system forms a closed rigid cavity, and when the ambient temperature rises, the internal pressure of the system rises sharply, so that the liquid cooling system is damaged due to overpressure and the like.
For this problem, the overvoltage protection of the system is usually achieved using a quick connector with a self-discharging function. The existing self-pressure-relief quick connector scheme in the market is shown in fig. 4, and the sealing rod of the structure is movably assembled in the cylindrical shell along the axial direction and is pre-tensioned in the cylindrical shell under the action of spring force. When the internal pressure of the liquid cooling system is higher than the spring force, the sealing rod is pushed out forwards under the action of the internal pressure, so that the sealing element on the sealing rod moves forwards until the sealing relation with the sealing ring is released, the internal medium flows out and the internal pressure is reduced, and the purpose of overpressure protection is achieved.
The pressure of the internal pressure on the sealing rod is generally equal to the product of the internal pressure and the area of action on the sealing rod (i.e. the area of the inner bore of the sealing ring), i.e. f= P.S, and this pressure value is balanced against the spring force it overcomes when it is relieved.
The pressure relief spring also needs to provide restoring force for the sealing ring, and the force value is limited, for example, when the quick connector is in a structure with small drift diameter and small pressure relief value, the pressure relief spring force is also small, and the spring in the scheme is insufficient to provide normally required restoring force for the sealing ring.
Disclosure of Invention
Aiming at the technical problem that the size of the pressure relief spring is limited, the invention aims to provide a quick connector with a pressure relief function.
The aim of the invention is realized by adopting the following technical scheme. The quick connector with the pressure relief function comprises a cylindrical shell, wherein a sealing ring is nested at the outer end part of the cylindrical shell, a pressure relief rod is installed in the cylindrical shell and axially moves in the cylindrical shell, a supporting ring is nested at the inner end part of the cylindrical shell, a pre-tightening spring is installed in the cylindrical shell, one end of the pre-tightening spring is abutted against the supporting ring, and the other end of the pre-tightening spring is abutted against the sealing ring; the pressure relief rod is arranged on the support ring in a penetrating manner, the outer end of the pressure relief rod is matched with the sealing ring to enable the sealing ring to be kept in a gap sealing state between the pressure relief rod and the cylindrical shell, the tail sleeve is arranged at the inner end of the pressure relief rod, the pressure relief spring is arranged between the inner side of the support ring and the tail sleeve, and when the internal liquid pressure of the pressure relief rod is larger than a set value, the pressure relief spring is overcome to move outwards so as to release the sealing matching relation with the sealing ring.
Further, an outer sealing rubber ring is nested at the matching position of the cylindrical shell and the sealing ring and is used for sealing a gap between the sealing ring and the cylindrical shell.
Furthermore, an inner sealing rubber ring is nested at the matched sealing position of the pressure unloading rod and the sealing ring and is used for sealing a gap between the pressure unloading rod and the sealing ring.
Further, the outer wall of the inner side end part of the pressure unloading rod is nested with a sleeve clamp spring, and the inner side end part of the tail sleeve is propped against the sleeve clamp spring.
Furthermore, the inner wall of the inner side end part of the cylindrical shell is nested with a clamp spring, and the inner side of the support ring is propped against the clamp spring, the outer side of the support ring is propped against the step of the inner wall of the cylindrical shell and is propped against one end of the pre-tightening spring.
Furthermore, a gap is reserved between the inner wall of the opposite parts of the tail sleeve and the support ring and the pressure relief rod, and the pressure relief spring is sleeved on the pressure relief rod and is nested in the gap between the tail sleeve and the support ring and the pressure relief rod; the inner walls of the back parts of the tail sleeve and the support ring are arranged on the pressure unloading rod in a sliding way.
Further, the unloading rod is provided with a bulge close to the middle position, and when the inner side of the bulge is propped against the supporting ring, the unloading rod and the sealing ring are in a sealing state.
Further, the outer diameter of the inner side of the sealing ring is larger than the outer diameter of the outer side, and correspondingly, the outer diameter of the inner side of the outer end part of the cylindrical shell matched with the sealing ring is larger than the inner diameter of the outer side.
Compared with the prior art, the invention has the following advantages: the connector independently separates the pressure relief spring from the pre-tightening spring of the sealing ring, and the pre-tightening spring independently provides pre-tightening and restoring force for the sealing ring and is not influenced by the elasticity of the pressure relief spring; the pressure relief spring is only responsible for the pressure relief function, and the pressure relief spring only provides restoring force for the pressure relief rod, and the pressure relief rod can independently bear the acting force of the pressure relief spring, so that the magnitude of the force value of the elastic force of the pressure relief spring can be very flexible, the force value can be flexible and variable, and the internal pressure only needs to be balanced with the elastic force of the pressure relief spring during pressure relief, so that the requirements of various pressure relief values and drift diameter combinations can be met.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.
Drawings
FIG. 1 is a front cross-sectional view of an embodiment of a quick connector with pressure relief according to the present invention;
FIG. 2 is a schematic view of the structure of the pressure relief lever and the support ring of FIG. 1;
FIG. 3 is a schematic diagram of the embodiment of FIG. 1 in a pressure relief state;
fig. 4 shows a prior art quick connector with pressure relief.
[ reference numerals ]
1-tubular shell, 101-step, 201-outer sealing rubber ring, 202-inner sealing rubber ring, 3-sealing ring, 4-pressure relief rod, 401-bulge, 5-pre-tightening spring, 6-supporting ring, 7-pressure relief spring, 8-jump ring, 9-tail sleeve, 10-sleeve jump ring, 11-prior art sealing rod, 12-prior art tubular shell, 13-prior art sealing ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of a quick connector with a pressure relief function, as shown in fig. 1 to 3, comprises a cylindrical shell 1, wherein a pressure relief rod 4 penetrates through the cylindrical shell 1, and the orientation shown in the drawings is used for illustration. The inner wall of the right end part of the cylindrical shell is nested with a sealing ring 3, an outer sealing rubber ring 201 is arranged between the outer wall of the sealing ring and the inner wall of the cylindrical shell, and the outer sealing rubber ring 201 is nested in a ring groove of the inner wall of the cylindrical shell 1 and is used for sealing the cylindrical shell 1 and the sealing ring 3. The inner diameter of the right end portion of the cylindrical housing near the opening is smaller than the inner diameter of the cylindrical housing main body, and the outer diameter of the left end portion of the seal ring 3 is larger than the outer diameter of the right end portion, so that the seal ring 3 is clamped inside the cylindrical housing 1.
The right-hand member of the pressure unloading pole 4 slides and sets up in sealing ring 3, and the right-hand member external diameter of pressure unloading pole 4 is greater than the external diameter of pressure unloading pole main part and right-hand member outer wall has seted up the annular, and the annular is interior to nest to have interior sealing rubber ring 202, and when the right-hand member portion of pressure unloading pole 4 was located sealing ring 3, interior sealing rubber ring 202 was in the sealed state to sealing pressure unloading pole 4 and sealing ring 3. The right end part of the unloading rod moves out of the sealing ring 3, and the inner sealing rubber ring 202 releases the sealing state of the unloading rod 4 and the sealing ring 3. The left end external diameter of the support ring 6 is larger than the right end external diameter, and the relative axial movement between the pressure unloading rod 4 and the support ring 6 can be realized. The inner wall of the left end part of the cylindrical shell close to the opening is provided with an annular groove, a clamp spring 8 is nested in the annular groove, the outer wall of the left end part of the support ring is clung to the inner wall of the cylindrical shell 1, the edge of the left end face of the support ring is propped against the clamp spring, the edge of the right end face of the left end part of the support ring is matched with a step 101 of the inner wall of the cylindrical shell, and the support ring 6 is limited in the inner cavity of the cylindrical shell 1. The right end of the pressure release rod 4, which is close to the supporting ring, is provided with a bulge 401, and the right end surface of the supporting ring 6 is propped against the left end surface of the bulge 401. The support ring 6 is provided with a passage for communicating the inside and the outside of the cylindrical housing 1.
The pre-tightening spring 5 is sleeved on the pressure relief rod 4 between the support ring 6 and the sealing ring 3, the left end part of the pre-tightening spring 5 abuts against the support ring 6 under the action of self elasticity, and the right end part of the pre-tightening spring abuts against the sealing ring 3.
The left part of the pressure unloading rod 4 penetrates through the supporting ring 6 and extends out of the cylindrical shell 1, and a sleeve clamp spring 10 is nested in an outer wall groove of the left end part of the pressure unloading rod 4. The left end part of the pressure unloading rod 4 is sleeved with a tail sleeve 9, and the left end of the tail sleeve 9 is propped against a sleeve clamp spring 10. The pressure relief spring 7 is sleeved on the pressure relief rod 4 between the tail sleeve 9 and the support ring 6, one end of the pressure relief spring 7 is propped against the tail sleeve, and the other end is propped against the support ring 6. The inner wall of the left end part of the tail sleeve is clung to the outer wall of the pressure relief rod, a gap is reserved between the inner wall of the right end part and the outer wall of the pressure relief rod, and the left end part of the pressure relief spring 7 is nested in the gap. The inner wall of the right end part of the supporting ring is attached to the outer wall of the pressure relief rod, a gap is reserved between the inner wall of the left end part and the outer wall of the pressure relief rod, and the right end part of the pressure relief spring 7 is nested in the gap. Under the elastic force of the pressure relief spring 7, the pressure relief lever 4 has a tendency to move leftward. When the internal pressure reaches a set value, the right end part of the pressure relief rod is pressed and moves to the right side to drive the sleeve clamp spring 10 to move, so as to drive the tail sleeve 9 to move to the right, the pressure relief spring 7 is compressed, and the right end part of the pressure relief rod moves out of the sealing ring 3 to start pressure relief; when the internal pressure is lower than the set value, the pressure release rod 4 moves leftwards to reset under the restoring force of the pressure release spring 7.
When pressure exists in the connector (the left end of the connector faces to the inner side, the right end of the connector faces to the outer side), the right end part and other parts of the pressure-unloading rod 4 are subjected to rightward pressure under the action of internal media, along with the increase of the internal pressure, the outward pressure applied to the pressure-unloading rod 4 is also increased, when the pressure can overcome the friction force and the elasticity of the pressure-unloading spring 7 at the same time, namely the pressure set value of the connector is reached, and the internal pressure continues to be increased, the left end face of the bulge on the pressure-unloading rod is gradually separated from the right end face of the supporting ring under the action of the internal pressure, the right end part of the pressure-unloading rod is pushed out of the sealing ring, the inner sealing rubber ring on the pressure-unloading rod 4 is released from the sealing state when the pressure-unloading rod is pushed out to a certain distance, and the media flow out achieves the purpose of pressure unloading. As the pressure relief process continues, the internal pressure is reduced, the restoring force of the pressure relief spring 7 overcomes the internal pressure, and the pressure relief rod 4 is restored to the original position under the action of the pressure relief spring 7, so that the sealing function is realized again.
The spring of the existing joint is required to provide enough restoring force for the sealing ring 3, balance with the internal pressure during pressure relief, the force value is relatively fixed, flexible pressure relief balance force cannot be provided, and the combination of specific pressure relief pressure and the drift diameter cannot be met as known by F= P.S. The connector independently separates the pressure relief spring 7 from the pre-tightening spring 5 of the sealing ring 3, and the pre-tightening spring 5 independently provides pre-tightening and restoring force for the sealing ring 3 and is not influenced by the elastic force of the pressure relief spring 7. The pressure relief spring 7 is only responsible for the pressure relief function, the pressure relief spring 7 only provides restoring force for the pressure relief rod 4, and the pressure relief rod 4 can independently bear the acting force of the pressure relief spring 7, so that the magnitude of the elastic force of the pressure relief spring 7 can be very flexible, the force value can be flexibly changed, and the internal pressure only needs to be balanced with the elastic force of the pressure relief spring 7 during pressure relief, so that the requirement of combination of various pressure relief values and drift diameters can be met.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a quick-operation joint of area release function, includes tubular casing (1), and tubular casing (1) outer tip nestification has sealing ring (3), installs in tubular casing (1) and unloads depression bar (4), unloads depression bar (4) axial displacement in tubular casing (1), its characterized in that: a supporting ring (6) is nested at the inner end part of the cylindrical shell (1), a pre-tightening spring (5) is arranged in the cylindrical shell (1), one end of the pre-tightening spring is propped against the supporting ring (6), and the other end of the pre-tightening spring is propped against the sealing ring (3); the pressure unloading rod (4) is arranged on the supporting ring (6) in a penetrating way, the outer end of the pressure unloading rod is matched with the sealing ring (3) to enable the sealing ring (3) to be kept in a state of blocking a gap between the pressure unloading rod (4) and the cylindrical shell (1), a bulge (401) is arranged at the middle position of the pressure unloading rod (4), and when the inner side of the bulge (401) is propped against the supporting ring (6), the pressure unloading rod (4) and the sealing ring (3) are in a sealing state; the end part of the inner side of the pressure relief rod (4) is provided with a tail sleeve (9), a pressure relief spring (7) is arranged between the inner side of the support ring and the tail sleeve (9), and when the internal liquid pressure of the pressure relief rod (4) is larger than a set value, the pressure relief spring (7) is overcome to move outwards so as to release the sealing fit relation with the sealing ring (3).
2. The quick connector with pressure relief function according to claim 1, wherein: an outer sealing rubber ring (201) is nested at the matching position of the cylindrical shell (1) and the sealing ring (3) and is used for sealing a gap between the sealing ring (3) and the cylindrical shell (1).
3. The quick connector with pressure relief function according to claim 1, wherein: an inner sealing rubber ring (202) is nested at the matched sealing position of the pressure relief rod (4) and the sealing ring (3) and is used for sealing a gap between the pressure relief rod (4) and the sealing ring (3).
4. The quick connector with pressure relief function according to claim 1, wherein: the outer wall of the inner side end part of the pressure relief rod (4) is nested with a sleeve clamp spring (10), and the inner side end part of the tail sleeve (9) is propped against the sleeve clamp spring (10).
5. The quick connector with pressure relief function according to claim 1, wherein: the inner wall of the inner side end part of the cylindrical shell (1) is nested with a clamp spring (8), the inner side of the support ring (6) is propped against the clamp spring (8), the outer side of the support ring is propped against a step (101) of the inner wall of the cylindrical shell, and the support ring is propped against one end of the pre-tightening spring (5).
6. The quick connector with pressure relief function according to claim 1, wherein: a gap is reserved between the inner wall of the opposite parts of the tail sleeve (9) and the supporting ring (6) and the pressure relief rod (4), and the pressure relief spring (7) is sleeved on the pressure relief rod (4) and is nested in the gap between the tail sleeve (9) and the supporting ring (6) and the pressure relief rod (4); the inner walls of the back parts of the tail sleeve (9) and the support ring (6) are arranged on the pressure unloading rod (4) in a sliding way.
7. The quick connector with pressure relief function according to claim 1, wherein: the outer diameter of the inner side of the sealing ring is larger than that of the outer side, and the outer diameter of the inner side of the outer end part of the cylindrical shell matched with the sealing ring (3) is larger than that of the outer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110970020.1A CN113819325B (en) | 2021-08-23 | 2021-08-23 | Quick connector with pressure relief function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110970020.1A CN113819325B (en) | 2021-08-23 | 2021-08-23 | Quick connector with pressure relief function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113819325A CN113819325A (en) | 2021-12-21 |
| CN113819325B true CN113819325B (en) | 2023-06-27 |
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ID=78913487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110970020.1A Active CN113819325B (en) | 2021-08-23 | 2021-08-23 | Quick connector with pressure relief function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113819325B (en) |
Citations (6)
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| DE3317259A1 (en) * | 1983-05-11 | 1984-11-15 | Robert Bosch Gmbh, 7000 Stuttgart | Control valve |
| DE102009053635A1 (en) * | 2009-11-17 | 2011-05-19 | Robert Bosch Gmbh | Pilot operated pressure relief valve |
| CN104696549A (en) * | 2013-12-06 | 2015-06-10 | 苏州金莱克精密机械有限公司 | High pressure washer with improved unloading valve |
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| CN108626451A (en) * | 2017-03-21 | 2018-10-09 | 天津安宇华泰科技发展有限公司 | A kind of sealed cabinet double-direction relief device |
| CN110608328A (en) * | 2018-06-15 | 2019-12-24 | 中国科学院沈阳自动化研究所 | Gas-liquid disconnecting device with wrong insertion preventing function for space experiment cabinet and using method of gas-liquid disconnecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4303098A (en) * | 1980-04-14 | 1981-12-01 | Deere & Company | Female coupler |
| CN104500895B (en) * | 2014-12-16 | 2016-12-07 | 中航光电科技股份有限公司 | Rapid connector component |
| CN205639986U (en) * | 2016-05-05 | 2016-10-12 | 徐工集团工程机械股份有限公司 | Quick -operation joint who has voltage limiting function |
| CN105953008B (en) * | 2016-06-24 | 2019-02-15 | 中航光电科技股份有限公司 | Female connector and the rapid connector component for using the female connector |
| CN109114341B (en) * | 2017-06-22 | 2021-07-30 | 中航光电科技股份有限公司 | Liquid cooling system and quick-operation joint female joint thereof |
| CN110608337B (en) * | 2018-09-30 | 2021-05-18 | 中航光电科技股份有限公司 | Quick-operation joint subassembly and female joint thereof |
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2021
- 2021-08-23 CN CN202110970020.1A patent/CN113819325B/en active Active
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|---|---|---|---|---|
| DE3317259A1 (en) * | 1983-05-11 | 1984-11-15 | Robert Bosch Gmbh, 7000 Stuttgart | Control valve |
| DE102009053635A1 (en) * | 2009-11-17 | 2011-05-19 | Robert Bosch Gmbh | Pilot operated pressure relief valve |
| CN104696549A (en) * | 2013-12-06 | 2015-06-10 | 苏州金莱克精密机械有限公司 | High pressure washer with improved unloading valve |
| CN108626451A (en) * | 2017-03-21 | 2018-10-09 | 天津安宇华泰科技发展有限公司 | A kind of sealed cabinet double-direction relief device |
| CN108488454A (en) * | 2018-05-18 | 2018-09-04 | 武汉船用机械有限责任公司 | A kind of pipeline pressure bleed-off system |
| CN110608328A (en) * | 2018-06-15 | 2019-12-24 | 中国科学院沈阳自动化研究所 | Gas-liquid disconnecting device with wrong insertion preventing function for space experiment cabinet and using method of gas-liquid disconnecting device |
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| Publication number | Publication date |
|---|---|
| CN113819325A (en) | 2021-12-21 |
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