Plug of fluid connector and fluid connector

Abstract

The invention discloses a plug of a fluid connector and the fluid connector in the field of fluid channel connection, the plug is matched with a socket for use, and the plug comprises a first shell, a movable valve core, a first sealing ring, a first elastic piece, a sheath and a second elastic piece; when the plug is in a self-sealing state, the first sealing ring is exposed relative to the sheath, and the movable valve element is in sealing fit with the inner wall of the inserting end of the first shell through the first sealing ring. When the plug is in butt joint with the socket, the first elastic piece and the second elastic piece are compressed, the first sealing ring returns to the sheath, the sheath moves towards the position far away from the plugging end of the first shell, and a fluid channel is formed between the sheath and the inner wall of the plugging end. By arranging the sheath structure, the valve element sealing ring is protected in the protection section of the sheath, and the situation that the sealing ring is washed away due to too large pressure is reduced.

Description

Technical Field

[0001] The invention relates to a plug of a fluid connector and a fluid connector, belonging to the technical field of fluid channel connection. Background Art

[0002] With the development of technology, electronic equipment tends to be highly reliable, and there is an urgent need for high-reliability fluid connectors to achieve the transmission of fluid between the cooled module and the chassis. A connector for fluids has emerged, but this type of connector currently has some problems during operation.

[0003] Most existing connectors such as Figure 1 As shown in the figure, the flow channel is at the critical point of opening and closing. When the flow channel is opened, the water flow velocity is relatively large, which directly impacts the sealing ring on the fixed valve core, and the sealing ring is very easy to fall off, causing product leakage. When the system pressure is greater than 1.0MPa, the sealing ring will fall off. Figure 2 As shown, the fixed valve core sealing ring is about to separate from the sealing surface of the housing and will be impacted by high-speed liquid, separating from the fixed valve core. If the product continues to be plugged in and out, the sealing ring will be damaged and the product seal will fail.

[0004] Therefore, when the liquid flow is large, the flow channel is opened instantly. At this time, due to abnormal working conditions, the pressure in the connector rises rapidly, and the valve core seal of the conventional piston seal structure is easily washed away by the water flow. Once the valve core seal is washed away by the fluid, the connector seal will fail, causing leakage. This type of problem occurs especially in two-phase liquid-cooled heat dissipation systems. Due to phase change, the system pressure often exceeds 1MPa, and the valve core seal of the conventional piston seal structure will be washed away by the water flow, causing leakage. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art. In the existing two-phase liquid-cooled heat dissipation system, due to the high system pressure, when plugging and unplugging under pressure, the valve core sealing ring serving as the flow channel switch will be washed away due to excessive pressure, thereby causing sealing failure.

[0006] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions: In a first aspect, a plug of a fluid connector is provided, which is used in conjunction with a socket, and the plug comprises: A first shell, the interior of which is hollow to form a cavity, and the first shell includes a plug-in end; A movable valve core is installed in the cavity, and a first sealing ring is installed at one end of the movable valve core close to the plug-in end; A first elastic member, one end of which is relatively fixed to the first housing, and the other end of which is connected to the movable valve core; The plug further comprises: A sheath, which is sleeved on the movable valve core; A second elastic member, one end of which is relatively fixed to the first shell, and the other end of which is connected to the sheath; When the plug is in a self-sealing state, the first sealing ring is exposed relative to the sleeve, and the movable valve core is sealed with the inner wall of the plug-in end of the first shell through the first sealing ring; when the plug and the socket are docked with each other, the first elastic member and the second elastic member are compressed and the first sealing ring is retreated into the sleeve, and the sleeve moves in a direction away from the plug-in end of the first shell and forms a fluid channel with the inner wall of the plug-in end.

[0007] Furthermore, one end of the movable valve core is set as a pushing end, a mounting groove is opened on the side wall of the pushing end, the first sealing ring is installed in the mounting groove, and the other end of the movable valve core is a clamping end, which is clamped with one end of the first elastic member.

[0008] Furthermore, flow plates are arranged in a ring array between the pushing end and the clamping end, flow grooves are formed between the flow plates, and the flow grooves are connected to the internal space of the clamping end to form a semi-open structure; a guide cone is arranged at the axis center of the movable valve core, and the guide cone points to the clamping end.

[0009] Furthermore, the inner wall of the clamping end is provided with a positioning surface, and the movable valve core is clamped with the first elastic member through the positioning surface; the outer wall of the clamping end is provided with a limiting surface, and the limiting surface is provided with an inclination angle and fits with the inner wall of the sleeve.

[0010] Furthermore, the sheath includes a fitting end and a support block connected to the fitting end; A limiting plane is provided at the end surface of the fitting end, a limiting inclined surface is provided on the outer wall of the support block, the limiting inclined surface is provided with an inclination angle, and the sheath fits with the inner wall of the first shell through the limiting plane and the limiting inclined surface; A support surface is provided at one end of the support block away from the fitting end, and the second elastic member is clamped with the first shell through the support surface.

[0011] Furthermore, the support block is provided with guide grooves distributed in a ring array, and the guide grooves are connected to the inside of the sheath.

[0012] Furthermore, the sheath further comprises a flow guiding end connected to the support block, a flow guiding hole is arranged at the axis of the flow guiding end, and the interior of the first shell is connected to the interior of the sheath through the flow guiding hole; The inner wall of the flow-guiding end is provided with a limit piece, and the limit piece is used to fit with the clamping end of the movable valve core; Wherein, in the non-inserted state, the distance between the clamping end and the limiting member is equal to the length of the fitting end.

[0013] Furthermore, the elastic coefficient of the first elastic member is smaller than the elastic coefficient of the second elastic member.

[0014] Furthermore, a positioning column is provided at the inner axis of the first shell, and the first elastic member is clamped in the first shell through the positioning column.

[0015] In a second aspect, a fluid connector comprises the plug as described in any one of the first aspect and a socket used in conjunction with the plug, wherein the socket comprises a fixed valve core, and a second sealing ring is installed on the surface of the fixed valve core.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the protection of the valve core sealing ring within the protection section of the sleeve by setting a sleeve structure and cooperating with the movable valve core, thereby reducing the possibility of the sealing ring being washed away due to excessive pressure and improving the applicability of the equipment; at the same time, the supporting springs of the movable valve core and the sleeve move independently, avoiding the problem of spring rebound failure, which causes the rebound timing of the two to be disordered and the sheath protection function to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure shows the plug-in schematic diagram of the existing product; Figure 2 The figure shows a cross-sectional view of the existing structure at a critical state of opening the plug-in flow channel; Figure 3 Shown is a cross-sectional view of the internal structure of a movable valve core according to an embodiment of the present invention; Figure 4 Shown is a cross-sectional view of a sheath structure of an embodiment of the present invention; Figure 5 Shown is a schematic diagram of a sheath structure of an embodiment of the present invention; Figure 6 Shown is a schematic diagram of a movable valve core according to an embodiment of the present invention; Figure 7 The figure shows a cross-sectional view of an embodiment of the present invention in a critical state of opening the plug-in flow channel; Figure 8 Shown is a cross-sectional view of a second plugged state of an embodiment of the present invention; Fig. 9 The figure shows a schematic diagram of a fully plugged-in embodiment of the present invention.

[0018] Reference numerals: 1. First shell; 11. Positioning column; 12. Fluid channel; 13. Cavity; 2. Fixed valve core; 3. Movable valve core; 31. Push end; 311. Mounting groove; 32. Clamping end; 321. Positioning surface; 322. Limiting surface; 33. Flow groove; 34. Guide cone; 35. Flow plate; 41. First sealing ring; 42. Second sealing ring; 5. Sheath; 51. Fitting end; 52. Guide end; 521. Guide hole; 522. Limiting member; 53. Support block; 531. Support surface; 54. Limiting plane; 55. Limiting slope; 56. Flow groove; 6. First elastic member; 7. Second elastic member. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Embodiment 1:

[0021] This embodiment provides a plug of a fluid connector, comprising: a first housing 1, the interior of which is hollow to form a cavity 13, the first housing 1 comprising a plug end; The movable valve core 3 is slidably installed in the cavity 13, and a mounting groove 311 is provided on a side wall of one end of the movable valve core 3 close to the plug-in end; The first sealing ring 41 is installed in the installation groove 311; One end of the first elastic member 6 is relatively fixed to the first housing 1, and the other end is connected to the movable valve core 3; The plug further comprises: a sheath 5 and a second elastic member 7; the sheath 5 is sleeved on the movable valve core 3; one end of the second elastic member 7 is relatively fixed to the first housing 1, and the other end is connected to the sheath 5; When the plug is in a self-sealing state, the first sealing ring 41 is exposed relative to the sheath 5, and the movable valve core 3 is sealed with the inner wall of the plug-in end of the first shell 1 through the first sealing ring 41; when the plug is docked with the socket, the first elastic member 6 and the second elastic member 7 are compressed and the first sealing ring 41 retreats into the sheath 5, and the sheath 5 moves toward a position away from the plug-in end of the first shell 1 and forms a fluid channel 12 with the inner wall of the plug-in end.

[0022] like Figure 4 As shown, since the fixed valve core 2 needs to fit with the movable valve core 3, and thus the fixed valve core 2 can push the movable valve core 3 to slide in the sheath 5, the outer diameter of the fixed valve core 2 is set to be the same as the inner diameter of the fitting end 51, and the outer diameter of the movable valve core 3 is the same as the inner diameter of the fitting end 51; thereby, the fixed valve core 2 can push the movable valve core 3 to slide inside the fitting end 51 while maintaining the sealing by using the first sealing ring 41, and at the same time, the first sealing ring 41 can be protected by the sheath 5 to prevent the first sealing ring 41 from being washed away by excessive pressure.

[0023] One end of the movable valve core 3 is configured as a push end 31, and a mounting groove 311 is provided on a side wall of the push end 31. The first sealing ring 41 is installed in the mounting groove 311. The other end of the movable valve core 3 is a clamping end 32, and the clamping end 32 is clamped with one end of the first elastic member (6).

[0024] like Figure 5 As shown, flow plates 35 are arranged in a ring array between the pushing end 31 and the clamping end 32, and flow grooves 33 are formed between the flow plates 35. The flow grooves 33 are connected to the internal space of the clamping end 32 to form a semi-open structure; a guide cone 34 is arranged at the axis center of the movable valve core 3, and the guide cone 34 points to the clamping end 32.

[0025] like Figure 6 As shown, the installation groove 311 is an inwardly recessed annular groove, and the size of the groove accommodates the first sealing ring 41 to be inserted, thereby realizing the sealing of the fluid connector; the flow grooves 33 are arranged in an annular array on the surface of the movable valve core 3, and the flow grooves 33 are connected to the connecting end 32 to form a semi-open structure, the purpose of which is to reduce the flow resistance and provide the movable valve core 3 with a larger flow space for the fluid after being pushed into the sleeve 5; a guide cone 34 is provided at the axial center of the movable valve core 3, and the guide cone 34 is also used to reduce the flow resistance and share part of the pressure at the same time.

[0026] like Figure 5As shown, the inner wall of the clamping end 32 is provided with a positioning surface 321, and the movable valve core 3 is clamped to the first elastic member 6 through the positioning surface 321; the outer wall of the clamping end 32 is provided with a limiting surface 322, and the limiting surface 322 is provided with an inclined angle and fits with the inner wall of the sheath 5.

[0027] A positioning column 11 is disposed at the inner axis of the first shell 1 , and the first elastic member 6 is clamped in the first shell 1 through the positioning column 11 .

[0028] like Figure 3 , Figure 7 , Figure 8 and Fig. 9 As shown, the positioning surface 321 is set to be parallel to the surface of the first elastic member 6 in this embodiment, so that the first elastic member 6 can be clamped on the positioning surface 321 by relying on elastic potential energy, one end of the first elastic member 6 is against the positioning surface 321, and the other end is clamped with the first shell 1 through the positioning column 11; the limiting surface 322 is set to be an inclined surface, so that the movable valve core 3 can be pushed under the elastic potential energy of the first elastic member 6, and the limiting surface 322 is fitted with the inner wall of the sleeve 5, and then the first sealing ring 41 is used to seal the fluid connector; a positioning column 11 is provided at the inner axis of the first shell 1, and the first elastic member 6 is clamped in the first shell 1 through the positioning column 11.

[0029] like Figure 5 As shown, the sleeve 5 also includes: a support block 53, a limiting plane 54 and a limiting slope 55; the limiting plane 54 is located at the outermost end of the fitting end 51, and the fixed valve core 2 is fitted with the limiting plane 54; the outer wall of the fitting end 51 is provided with a supporting block 53 in an annular array, and the end of the supporting block 53 away from the limiting plane 54 is provided with a supporting surface 531, and the second elastic member 7 is clamped with the first shell 1 through the supporting surface 531; the outer wall of the support block 53 is provided with a limiting slope 55, and the limiting slope 55 is provided with an inclination angle, and the sleeve 5 is fitted with the inner wall of the first shell 1 through the limiting slope 55.

[0030] The limiting plane 54 is in contact with the first shell 1 when the fixed valve core 2 is not pressurized, and the limiting plane 54 is in contact with the first shell 1 until the clamping end 32 of the movable valve core 3 is in contact with the bottom surface of the sleeve 5; the support blocks 53 are arranged in an annular array, thereby providing a support surface 531 supported by the second elastic member 7, and the outer wall of the support block 53 is provided with a limiting inclined surface 55, and the limiting inclined surface 55 is used to be in contact with the inner wall of the first shell 1. The inner wall of the first shell 1 is provided with an inclined surface structure that is in contact with the limiting inclined surface 55, thereby ensuring the sealing performance.

[0031] A guide groove 56 is provided between adjacent support surfaces 531 , and the guide groove 56 is connected to the inside of the sheath 5 ; the sheath 5 also includes a guide end 52 , and a guide hole 521 is provided at the axis of the guide end 52 , and the interior of the first shell 1 is connected to the interior of the sheath 5 through the guide hole 521 .

[0032] The guide groove 56 is used to reduce flow resistance, and is combined with the guide hole 521 to minimize flow resistance.

[0033] A limiting member 522 is provided on the inner wall of the guide end 52 , and the limiting member 522 is used to fit with the clamping end 32 of the movable valve core 3 ; wherein, in the non-inserted state, the length of the clamping end 32 from the limiting member 522 is equal to the length of the fitting end 51 .

[0034] In this embodiment, the elastic coefficient of the first elastic member 6 is set to be smaller than the elastic coefficient of the second elastic member 7. Combined with the setting that the length of the clamping end 32 from the limit member 522 is equal to the length of the fitting end 51, it can be achieved that when the fixed valve core 2 is pushed, the first elastic member 6 will be squeezed first, so that the first sealing ring 41 is clamped into the fitting end 51 of the sheath 5, and the second elastic member 7 will not be squeezed until the first sealing ring 41 completely enters the fitting end 51 of the sheath 5, thereby opening the flow channel. Embodiment 2:

[0035] On the basis of the first embodiment, a fluid connector is provided, including a plug and a socket, wherein the socket includes a fixed valve core 2 , and a second sealing ring 42 is installed on the surface of the fixed valve core 2 .

[0036] The specific working process is as follows: when the plug is in the unplugged state, that is, when the plug is in the self-sealing state, the limiting surface 322 of the movable valve core 3 fits with the inner wall of the sheath 5 to realize the axial limiting of the movable valve core 3, and at this time, the first sealing ring 41 and the first shell 1 realize radial sealing; at this time, the limiting plane 54 of the sheath 5 and the first shell 1 are against the stop position, one end face of the first elastic member 6 is in contact with the positioning surface 321 of the movable valve core 3, and the other end face is in contact with the bottom surface of the first shell 1; a positioning column 11 for positioning the first elastic member 6 is provided in the middle position of the bottom of the first shell 1, one end face of the second elastic member 7 is in contact with the supporting surface 531 of the sheath 5, and the other end face is in contact with the bottom surface of the first shell 1, and the second elastic member 7 moves axially along the outer wall of the sheath 5.

[0037] In this embodiment, Figure 7As shown, when the plug and the socket are connected and inserted with each other, the fixed valve core 2 first pushes the movable valve core 3 to move axially, and the first elastic member 6 is further compressed. At this time, the second elastic member 7 supports the sheath 5, and the limiting plane 54 of the sheath 5 is still in contact with the first housing 1. At this time, the second sealing ring 42 of the fixed valve core 2 has entered the protective section of the sheath 5, and continues to be inserted, as shown in FIG. Figure 8 As shown, the bottom of the movable valve core 3 is flush with the bottom end of the sheath 5. At this time, the second sealing ring 42 of the fixed valve core 2 is completely wrapped in the protective section of the sheath 5. In this way, the sheath 5, the movable valve core 3 and the fixed valve core 2 move axially as a whole until they are fully inserted into place. Fig. 9 As shown; during the insertion process, the flow channel opens from the moment of opening to the complete opening, and the first sealing ring 41 of the movable valve core 3 and the second sealing ring 412 of the fixed valve core 2 are always protected in the protective section of the sheath 5, avoiding damage to the first sealing ring 41 caused by liquid flow or air flow impact, thereby improving product reliability; during the unplugging process, such as the reverse movement of the insertion process, the first sealing ring 41 of the movable valve core 3 and the second sealing ring 42 of the fixed valve core 2 are always protected in the protective section of the sheath 5, and will not be damaged or fall off.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A plug of a fluid connector, used in conjunction with a socket, the plug comprising: A first shell (1), the interior of which is hollow to form a cavity (13), and the first shell (1) comprises a plug-in end; A movable valve core (3) is installed in the cavity (13); a first sealing ring (41) is installed at one end of the movable valve core (3) close to the plug-in end; A first elastic member (6), one end of which is relatively fixed to the first housing (1), and the other end of which is connected to the movable valve core (3); The plug is characterized in that: the plug further comprises: a sheath (5) sleeved on the movable valve core (3); a second elastic member (7), one end of which is relatively fixed to the first shell (1) and the other end of which is connected to the sheath (5); When the plug is in a self-sealing state, the first sealing ring (41) is exposed relative to the sleeve (5), and the movable valve core (3) is sealed with the inner wall of the plug-in end of the first housing (1) through the first sealing ring (41); when the plug and the socket are connected to each other, the first elastic member (6) and the second elastic member (7) are compressed and the first sealing ring (41) is retracted into the sleeve (5), and the sleeve (5) moves in a direction away from the plug-in end of the first housing (1) and forms a fluid channel (12) with the inner wall of the plug-in end.

2. The plug of the fluid connector according to claim 1, characterized in that: One end of the movable valve core (3) is configured as a push end (31), a side wall of the push end (31) is provided with a mounting groove (311), the first sealing ring (41) is mounted in the mounting groove (311), and the other end of the movable valve core (3) is a clamping end (32), the clamping end (32) being clamped with one end of the first elastic member (6).

3. The plug of the fluid connector according to claim 2, characterized in that: A flow plate (35) is arranged in an annular array between the pushing end (31) and the clamping end (32), and a flow groove (33) is formed between the flow plates (35). The flow groove (33) is connected to the internal space of the clamping end (32) to form a semi-open structure. A guide cone (34) is arranged at the axis of the movable valve core (3), and the guide cone (34) points to the clamping end (32).

4. The plug of the fluid connector according to claim 2, characterized in that: The inner wall of the clamping end (32) is provided with a positioning surface (321), and the movable valve core (3) is clamped with the first elastic member (6) via the positioning surface (321); the outer wall of the clamping end (32) is provided with a limiting surface (322), and the limiting surface (322) is provided with an inclined angle and is in contact with the inner wall of the sheath (5).

5. The plug of the fluid connector according to claim 1, characterized in that: The sheath (5) comprises a fitting end (51) and a support block (53) connected to the fitting end (51); A limiting plane (54) is provided at the end surface of the fitting end (51); a limiting inclined surface (55) is provided on the outer wall of the support block (53); the limiting inclined surface (55) is provided with an inclination angle; the sheath (5) fits with the inner wall of the first shell (1) via the limiting plane (54) and the limiting inclined surface (55); A support surface (531) is provided at one end of the support block (53) away from the fitting end (51), and the second elastic member (7) is clamped with the first shell (1) via the support surface (531).

6. The plug of the fluid connector according to claim 5, characterized in that: The support block (53) is provided with guide grooves (56) distributed in a ring array, and the guide grooves (56) are connected to the interior of the sheath (5).

7. The plug of the fluid connector according to claim 6, characterized in that: The sheath (5) further comprises a flow guiding end (52) connected to the support block, a flow guiding hole (521) being arranged at the axis of the flow guiding end (52), and the interior of the first shell (1) is connected to the interior of the sheath (5) via the flow guiding hole (521); The inner wall of the flow-guiding end (52) is provided with a limiting member (522), and the limiting member (522) is used to fit with the clamping end (32) of the movable valve core (3); Wherein, when the plug is in a self-sealing state, the distance between the clamping end (32) and the limiting member (522) is equal to the length of the fitting end (51).

8. The plug of the fluid connector according to claim 1, characterized in that: The elastic coefficient of the first elastic member (6) is smaller than the elastic coefficient of the second elastic member (7).

9. The plug of the fluid connector according to claim 1, characterized in that: A positioning column (11) is provided at the inner axis of the first shell (1), and the first elastic member (6) is clamped in the first shell (1) via the positioning column (11).

10. A fluid connector, characterized in that: It comprises a plug as claimed in any one of claims 1 to 9 and a socket used in conjunction with the plug, the socket comprising a fixed valve core (2), a second sealing ring (42) being mounted on the surface of the fixed valve core (2).

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