CN110469731B

CN110469731B - Quick-change connector with double sealing function

Info

Publication number: CN110469731B
Application number: CN201910797751.3A
Authority: CN
Inventors: 杨安礼; 马乐; 赵颍杰
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2021-11-23
Anticipated expiration: 2039-08-27
Also published as: CN110469731A

Abstract

The utility model provides a quick change coupler with double sealing function, including disc casing, suit on the disc casing and be used for with installation module threaded connection after will the spacing flange casing in installation module's trompil of disc casing is provided with the fluid passage who runs through the disc casing along the axial in the disc casing, disc casing cover be equipped with the sealed complex first O shape circle of trompil inner wall, flange casing right side end face has seted up half dovetail, be equipped with in this half dovetail with the front panel butt of installation module in order to realize end face seal's second O shape circle, be equipped with in the mounting groove of this flange casing and be located between disc casing and the flange casing and be used for carrying out radial unsteady spacing third O shape circle to the disc casing, be equipped with on the disc casing with third O shape circle top pressure in arch on the mounting groove. The invention can ensure that cooling liquid can not leak from the interior of the installation module under the combined action of the two 0-shaped rings on the flange shell even if the first 0-shaped ring seal fails.

Description

Quick-change connector with double sealing function

Technical Field

The invention belongs to the technical field of quick change connectors in liquid cooling systems, and particularly relates to a quick change connector with double sealing functions.

Background

With the continuous development of various electronic devices, the integration level of products is higher and higher, the heat dissipation problem of the devices becomes more and more prominent, and the traditional air cooling technology cannot meet the requirements, so that the liquid cooling heat dissipation technology becomes a preferred scheme for solving the problem. The liquid cooling heat dissipation technology is widely applied to the fields of aviation, aerospace, ships, ground radars, servers, wind power, electric vehicles and the like.

Along with the continuous development of electronic equipment integration, electronic equipment is smaller and smaller, circuits are more and more intensive, and for convenience of installation and maintenance, a modularized technology is developed at the same time, and a liquid cooling heat dissipation subsystem is synchronously integrated into a module. The quick-change connector can realize quick connection and disconnection between the module and an external liquid path, and is a key component for realizing the liquid cooling function. The sealing reliability of the quick-change connector is the most important performance, and if the function fails, liquid leaks into the module, so that a circuit system is short-circuited, and the main function operation of the equipment is seriously influenced. The main risks of the quick-change connector in the aspect of sealing reliability are as follows:

1) if the exposed O-shaped ring outside the quick-change connector is improperly protected in the transportation and use processes, impurities are easily adhered or the local O-shaped ring is damaged by external acting force, so that the sealing failure is caused;

2) and if the hole wall processing quality of the opened hole is poor, if tool marks or roughness are poor, an external sealing O-shaped ring of the quick-change connector is scratched in the installation and use process to cause sealing failure.

Disclosure of Invention

In order to solve the problem of sealing failure of an external O-shaped ring of the existing quick-change connector, the invention provides the quick-change connector with a double sealing function, and even if the sealing failure is caused by damage of the externally sleeved 0-shaped ring, the two 0-shaped rings on the flange shell can jointly act to ensure that cooling liquid cannot leak from the inside of an installation module.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. According to the quick-change connector with the double sealing function, which is provided by the invention, the quick-change connector comprises a disc shell and a flange shell, wherein the flange shell is sleeved on the disc shell and used for limiting the disc shell in an opening of an installation module after being in threaded connection with the installation module, a fluid channel penetrating through the disc shell along the axial direction is arranged in the disc shell, a first O-shaped ring in sealing fit with the inner wall of the opening is sleeved on the outer surface of the right end of the disc shell, a half dovetail groove is formed in the right end face of the flange shell, a second O-shaped ring in butt joint with a front panel of the installation module to realize end face sealing is arranged in the half dovetail groove, a third O-shaped ring which is positioned between the disc shell and the flange shell and used for radially floating and limiting the disc shell is arranged in an installation groove of the flange shell, and a bulge for pressing the third O-shaped ring on the inner wall of the installation groove is arranged on the disc shell.

The invention is further realized by adopting the following technical scheme.

In the quick-change coupler, the first valve core is arranged in the middle of the fluid passage, the second valve core is elastically assembled on the periphery of the first valve core through a spring, and when the spring is in a free state, the second valve core is in sealing fit with the first valve core to block the fluid passage.

In the quick-change coupler, the right end of the first valve core is provided with a fixing plate, the fixing plate is fixedly assembled in the disc housing through a snap spring, and a plurality of flow holes communicated with the fluid channel are formed in the fixing plate along the circumferential direction.

In the quick-change coupler, one end of the spring abuts against the fixing plate, and the other end of the spring abuts against the second valve spool.

In the quick-change coupler, the inner wall of the second valve core is embedded with a fourth 0-shaped ring for sealing and matching with the first valve core.

In the quick-change coupler, the inner wall of the disc housing is embedded with a fifth 0-shaped ring for sealing and matching with the second valve core.

In the quick-change connector, a flange which is in butt fit with the limiting part on the inner wall of the disc housing is convexly arranged in the middle of the second valve core.

In the quick-change coupler, the right end of the second valve core is provided with a guide limiting part for radially limiting the spring.

Compared with the prior art, the quick-change connector provided by the invention at least has the following beneficial effects:

1. the flange shell is additionally provided with a half dovetail groove on the right end face, and a second O-shaped ring is arranged in the half dovetail groove and matched with a front panel at the opening of the installation module to play a role in sealing the end face, so that liquid is prevented from overflowing and leaking from the threaded joint of the flange shell and the opening.

2. The part of the disc shell, which is in contact with the third O-shaped ring, is additionally provided with a section of bulge so as to increase the tensile compression ratio of the third O-shaped ring, so that the function of the third O-shaped ring is changed from the simple floating limit of the disc shell to prevent the disc shell from being in rigid contact with the flange shell to prevent part damage, and the disc shell can realize the radial floating limit and has the sealing function.

3. The second O-shaped ring and the third O-shaped ring jointly play a double sealing function; even when the first O-ring seal fails, the second O-ring can prevent liquid from leaking from the threaded joint between the flange housing and the opening, and the third O-ring can prevent liquid from leaking from between the flange housing and the disc housing, so that the quick-change connector is ensured not to leak as a whole, and high reliability of double sealing of the quick-change connector is realized.

Drawings

Fig. 1 is a schematic structural view of a quick-change connector with a double sealing function according to the invention.

Fig. 2 is a schematic view showing a state in which a quick-change coupling having a double sealing function according to the present invention is mounted on a mounting module.

Fig. 3 is a schematic sectional view of a flange housing according to the present invention.

Fig. 4 is a schematic sectional view of the disc housing according to the present invention.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 4, a quick-change coupler with a double sealing function includes a disc housing 1, and a flange housing 2 that is sleeved on the disc housing 1 and is used for fixing the disc housing 1 in an opening 401 of an installation module after being in threaded connection with the installation module 4, wherein a fluid passage 3 that axially penetrates through the disc housing is provided in the disc housing 1, and the opening 401 in this embodiment is a stepped hole and is communicated with a cooling liquid flow passage inside the installation module 4. The outside cover of disc casing 1 right-hand member is equipped with and is equipped with the first O shape circle 5 with trompil 401 inner wall sealing fit, half dovetail 201 has been seted up to flange casing 2 right side terminal surface, be equipped with in this half dovetail 201 with install the second O shape circle 6 of module 4's front panel 402 butt in order to realize end face seal, be equipped with in this flange casing 2's the mounting groove 202 and be located between disc casing 1 and the flange casing 2 and be used for carrying out the spacing third O shape circle 7 that radially floats to disc casing 1, be equipped with on the disc casing 1 and be used for pressing the arch 101 on the mounting groove 202 inner wall with third O shape circle 7 roof pressure after the installation is accomplished, consequently, third O shape circle 7 also can realize the sealed effect between disc casing 1 and the flange casing 2.

After the external thread of the flange housing 2 is tightly connected with the internal thread of the corresponding opening 41 of the installation module, the right end face 203 of the flange housing 2 abuts against the step 102 of the disc housing 1, so that the disc housing abuts against and is limited in the corresponding step in the opening 41, and at the moment, the first O-shaped ring 5 and the inner wall of the opening 401 are mutually extruded and are in sealing fit to realize the sealing between the whole quick-change connector and the installation module 4. In the installation process, the flange shell rotates, the disc shell can not rotate, and a gap for realizing relative rotation of the flange shell and the disc shell needs to be arranged between the flange shell and the disc shell. After the installation, the flange housing 2 is fixed, but the disc housing 1 can float radially, and the third O-ring 7 is used for limiting the radial floating of the disc housing 1 and preventing the disc housing and the flange housing from being damaged due to rigid contact in the installation process or the use process. It should be noted that, in the disc housing in the prior art, the protrusion 101 is not disposed at the third O-ring, and then the third O-ring only has a radial limiting function (no sealing function) on the disc housing, so that when the first O-ring 5 fails to seal, the right end surface 203 of the flange housing does not have a good sealing effect even if the flange housing abuts against the step 102 of the disc housing, and the liquid in the installation module 4 leaks through the gap between the flange housing and the disc housing. After the bulge 101 is additionally arranged, the third O-shaped ring 7 can be tightly abutted against the inner wall of the mounting groove 202 of the flange shell, so that the tensile compression ratio of the third O-shaped ring 7 is increased, and the third O-shaped ring has a sealing function on the basis of the radial floating limiting effect on the disc shell.

In the event of a failure of the seal of the first O-ring 5, the cooling liquid in the installation module 4 may also leak between the external thread of the flange housing 2 and the internal thread of the opening 401, and such a leakage situation is also a frequent problem in practical conditions, because the thread of the opening 401 is not machined precisely enough. Under the condition that the second O-shaped ring 6 is additionally arranged, the end face of the front panel 402 of the installation module 4 can be ensured to be sealed after the quick-change connector is installed, and the leakage of cooling liquid between the flange shell and the front panel of the installation module is avoided; meanwhile, the requirement on the processing quality of the opening 401 can be reduced, and the method has important significance on reducing the processing cost.

A first valve core 8 is arranged in the middle of the fluid channel 3, a second valve core 10 is elastically assembled on the periphery of the first valve core 8 through a spring 9, the second valve core 10 can move along the axial direction of the fluid channel, and a fourth 0-shaped ring 11 used for being in sealing fit with the first valve core 8 is embedded in the inner wall of the second valve core 10; when the spring 9 is in a free state, the second valve core 10 is in sealing fit with the first valve core 8 to block the fluid passage 3. In this embodiment, the right end of the first valve core 8 is integrally formed with a fixing plate 801, and the fixing plate is fixedly assembled at the right end inside the disc housing 1 through a snap spring 12. The fixing plate 801 is provided with a plurality of flow holes 802 communicated with the fluid channel 3 along the circumferential direction, one end of the spring 9 is abutted against the fixing plate 801, the other end of the spring 9 is abutted against a middle flange 1001 of the second valve core 10, the spring 9 is considered to be in a free state when the flange 1001 is abutted against a limiting part 103 arranged at the inner wall plug end of the disc shell, and at the moment, the flange 1001 is contacted with the limiting part 103 to realize primary sealing. The inner wall of the disc shell 1 is embedded with a fifth 0-shaped ring 13, and when the spring is in a free state, the fifth 0-shaped ring 13 is matched with the outer surface of the second valve core 10 to realize secondary sealing after the primary sealing. The right end of the second valve core 10 extends along the axial direction of the disc housing to form a guide limiting part 1002, so that the spring 9 can be conveniently installed, positioned and radially limited.

The quick-change connector can be mutually plugged with a plug of the conventional fluid connector to realize the circulating refrigeration of the installation module, and has wide application range and strong compatibility. Specifically, the left end of the quick-change connector is a plug end, before the quick-change connector is installed, the third O-ring 7 can be located in a concave pit 104 formed in the left end of the protrusion 101, along with the continuous screwing of the flange shell into the open hole in the installation process, the flange shell can gradually push the third O-ring 7 onto the protrusion 101 from the concave pit 104 so as to realize a gradually enhanced sealing effect, and the protrusion 101 and the concave pit 104 are smoothly transited through a slope so as to facilitate the movement of the third O-ring 7; with reference to fig. 1, 2 and 4, the surface of the protrusion contacting the third O-ring extends in the axial direction, so that the protrusion can support the third O-ring in a stable radial direction after being installed in place, thereby achieving stable sealing. After the quick-change connector is installed, the plug of the existing fluid connector is inserted into the quick-change connector to elastically push the second valve core 10, the second valve core axially moves towards the right end of the disc shell under the guiding action of the inner wall of the disc shell, the fluid channel 3 is opened, and cooling liquid can flow out of the flow hole or flow into the installation module, so that the circulating cooling function is realized. When the installation module 4 and the external fluid path need to be disconnected, the plug of the external fluid path is pulled out from the quick-change connector, the second valve spool 10 is reset, and then the fluid channel 3 is plugged again, so that the double sealing function is achieved under the combined action of the second O-shaped ring 6 and the third O-shaped ring 7, and the leakage of cooling liquid in the installation module from the space between the flange shell and the installation module/disc shell is prevented.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.

Claims

1. The quick-change connector with double sealing functions is characterized by comprising a disc shell, a flange shell, a fluid channel, a first O-shaped ring, a half dovetail groove and a third O-shaped ring, wherein the disc shell is sleeved on the disc shell and is used for being in threaded connection with an installation module, the flange shell is limited in an opening of the installation module, the fluid channel penetrates through the disc shell along the axial direction, the first O-shaped ring is sleeved on the outer surface of the right end of the disc shell and is in sealing fit with the inner wall of the opening, a half dovetail groove is formed in the right end face of the flange shell, a second O-shaped ring is abutted to the front panel of the installation module to achieve end face sealing is arranged in the half dovetail groove, a third O-shaped ring is arranged in a mounting groove of the flange shell and is positioned between the disc shell and the flange shell and used for radially floating and limiting the disc shell, the disc shell is provided with a bulge which pushes the third O-shaped ring against the inner wall of the mounting groove, so that the tensile compression ratio of the third O-shaped ring (7) is increased to enable the third O-shaped ring to radially carry out radial floating limiting on the disc shell Floating limit and sealing the gap between the disc shell and the flange shell;

before installation, the third O-shaped ring is positioned in the concave pit at the left end of the bulge on the disc shell, the bulge and the concave pit are smoothly transited through a slope, and the flange shell gradually pushes the third O-shaped ring to the bulge from the concave pit along with the continuous screwing of the flange shell into the opening of the installation module in the installation process, so that the gradually enhanced sealing effect is realized; the surface of the protrusion contacting with the third O-shaped ring extends along the axial direction, so that the protrusion can stably and radially support the third O-shaped ring after being installed in place, and stable sealing is realized.

2. A quick-change coupling with double sealing function according to claim 1, characterized in that: the middle part of the fluid channel is provided with a first valve core, the periphery of the first valve core is elastically assembled with a second valve core through a spring, and when the spring is in a free state, the second valve core is in sealing fit with the first valve core to block the fluid channel.

3. A quick-change coupling with double sealing function according to claim 2, characterized in that: the right end of the first valve core is provided with a fixed plate, the fixed plate is fixedly assembled in the disc shell through a clamp spring, and a plurality of flow holes communicated with the fluid channel are formed in the fixed plate in the circumferential direction.

4. A quick-change coupling with double sealing function according to claim 3, characterized in that: one end of the spring is abutted against the fixed plate, and the other end of the spring is abutted against the second valve core.

5. A quick-change coupling with a double sealing function according to any one of claims 2 to 4, characterized in that: and a fourth O-shaped ring which is used for being in sealing fit with the first valve core is embedded in the inner wall of the second valve core.

6. A quick-change coupling with a double sealing function according to any one of claims 2 to 4, characterized in that: and a fifth O-shaped ring which is used for being in sealing fit with the second valve core is embedded in the inner wall of the disc shell.

7. A quick-change coupling with double sealing function according to claim 2, characterized in that: and a flange which is matched with the limiting part of the inner wall of the disc shell in an abutting mode is convexly arranged in the middle of the second valve core.

8. A quick-change coupling with double sealing function according to claim 2, characterized in that: the right end of the second valve core is provided with a guide limiting part for radially limiting the spring.