A fluid connector plug

Abstract

The application discloses a fluid connector plug, which comprises a shell, a valve body, a valve core, a T-shaped sealing ring, a first O-shaped sealing ring and a spring; the valve core comprises a first valve core and a second valve core which are matched through screwing, the T-shaped sealing ring is arranged at the joint position of the first valve core and the second valve core, and is matched with the T-shaped ring groove formed by the joint of the first valve core and the second valve core, and can abut against the transition part when the valve core is reset; the first O-shaped sealing ring is matched with the first clamping groove in the installation opening, and can abut against the first valve core when the valve core is reset. In the application, the assembly structure among the valve body, the valve core, the T-shaped sealing ring and the first O-shaped sealing ring is simple, and the assembly operation is convenient, so that the high sealing property and the high reliability of the plug and the socket in the connected or disconnected state can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid connector, in particular to a fluid connector plug. BACKGROUND

[0002] With the increasing degree of integration and miniaturization of electronic system equipment, the power density of the system equipment increases, and the selection of the heat dissipation mode tends to liquid cooling technology. Liquid cooling technology has the advantages of small volume, low noise and high heat dissipation efficiency. In the liquid cooling system, the fluid connector is one of the key components of the system, which is used for connection and transmission between liquid cooling systems. The fluid connector generally includes a plug and a socket, and the plug and the socket are respectively installed on the module and the rack. The plug and the socket are filled with cooling liquid, and both the plug and the socket need to maintain a good sealing state in the disconnected and connected states to ensure the normal work of the liquid cooling system.

[0003] In the prior art, when the plug and the socket are in the connected state, the sealing ring of the plug valve core has the risk of being washed away or damaged under extreme impact, thereby causing the overall sealing failure of the fluid connector. When the plug and the socket are in the disconnected state, the self-sealing of the plug is generally a single sealing ring structure, and the sealing reliability is low, which is difficult to ensure that the cooling liquid does not flow out. SUMMARY

[0004] The fluid connector plug provided by the present application can at least solve one of the above technical problems.

[0005] In order to solve the above technical problems, the present application adopts the following technical scheme: a fluid connector plug, comprising a shell, a valve body, a valve core, a T-shaped sealing ring, a first O-shaped sealing ring and a spring;

[0006] The valve body is inserted into the shell, and the inside of the valve body is sequentially provided with a mounting port, a transition part and a mounting cavity which are in communication with each other. The valve core is placed in the mounting port, and the spring is placed in the mounting cavity. The valve core has a movement stroke of extruding the spring and extending into the mounting cavity or releasing the spring and resetting when the plug is connected or separated from the socket.

[0007] The valve core includes a first valve core and a second valve core matched by screwing. The T-shaped sealing ring is arranged at the joint position of the first valve core and the second valve core and is matched with the T-shaped ring groove formed by the joint of the first valve core and the second valve core. The T-shaped sealing ring can be in contact with the transition part when the valve core is reset. The first O-shaped sealing ring is matched with the first clamping groove in the mounting port, and can be in contact with the first valve core when the valve core is reset.

[0008] Further, the T-shaped ring groove comprises a sealing port and a fixing port, the sealing port is arranged in the middle of the periphery of the fixing port, and the fixing port is connected in a T-shaped cross section.

[0009] The T-shaped sealing ring comprises a sealing part and a fixing part, the sealing part and the fixing part are connected in a T-shaped cross section, the fixing part is in a ring structure, and is matched with the fixing port, the sealing part is arranged along the middle of the periphery of the fixing part, and is matched with the sealing port.

[0010] Further, a threaded hole is arranged in the middle of the first valve core, a first fixing ring groove is arranged outside the threaded hole, a threaded column is arranged in the middle of the second valve core, a second fixing ring groove is arranged outside the threaded column, the threaded column is matched with the threaded hole, the first fixing ring groove and the second fixing ring groove are arranged oppositely, and have the same inner and outer diameters, and are matched with the threaded column and the threaded hole to form the fixing port, a gap is arranged between the outer edge of the first fixing ring groove of the first valve core and the outer edge of the second fixing ring groove of the second valve core, and is matched with the threaded column and the threaded hole to form the sealing port.

[0011] Further, a glue overflow groove is arranged outside the periphery of the threaded hole of the first valve core, and the threaded column is coated with glue, the glue overflow groove is used for storing the excess glue when the threaded column is connected with the threaded hole.

[0012] Further, the installation port, the transition part and the installation cavity are sequentially communicated from the mouth part to the tail part of the valve body, the diameter of the installation port is smaller than that of the installation cavity, the transition part is in a bell mouth shape and has a slope structure in the cross section, the first valve core is matched with the installation port in a sliding mode, the second valve core is arranged towards the installation cavity and abuts against the spring, the assembly head arranged at the tail part of the second valve core extends into the spring, and the sealing part has a movement stroke abutting against the transition part when the first valve core is reset in a sliding mode.

[0013] Further, the first clamping groove is arranged in a ring shape along the inner wall of the installation port and close to the mouth part of the valve body, the first O-shaped sealing ring is matched with the first clamping groove, and has a movement stroke abutting between the valve body and the first valve core when the first valve core is reset in a sliding mode.

[0014] Further, a screw cap is arranged on the outside of the valve body and abuts against the flange fixed on the periphery of the valve body, and a third O-shaped sealing ring is arranged in a third clamping groove in the bottom of the screw cap and abuts between the screw cap and the flange.

[0015] Further, the screw cap is connected with the inner wall of the shell through threads until the valve body is pressed into the shell, and a fourth O-shaped sealing ring is arranged in a fourth clamping groove in the mouth of the screw cap and abuts between the screw cap and the shell.

[0016] Further, a second O-shaped sealing ring is arranged in a second clamping groove in the bottom of the flange and abuts between the flange and the shell and is pressed against the shell when the screw cap is screwed.

[0017] Further, a plurality of fifth O-shaped sealing rings are arranged in a plurality of fifth clamping grooves on the outside of the shell and abut against the inner wall of the mounting hole when the plug is mounted.

[0018] The beneficial effects of the present application are embodied in:

[0019] 1. In the present application, the valve core adopts a split threaded connection structure, which can form a T-shaped ring groove at the assembly position, the T-shaped sealing ring is matched with the T-shaped ring groove, and the fixed part can be fixed and clamped with the threaded assembly of the two valve cores, the sealing part extends outward and fills the gap between the two valve cores, thus greatly improving the assembly stability of the valve core and the T-shaped sealing ring, enhancing the resistance to flow impact, reducing the risk of the T-shaped sealing ring being knocked out of the groove or damaged under extreme conditions, ensuring that the plug and the socket can maintain good sealing state in the connected state, thereby ensuring the normal flow of the cooling liquid and preventing leakage, and finally ensuring the normal operation of the liquid cooling system.

[0020] 2. In the present application, the plug adopts a double-layer self-sealing structure, the valve core can be slid to the mounting mouth of the valve body and inserted and matched with the valve body, the fixed part of the T-shaped sealing ring is fixedly matched with the valve core, the sealing part can abut against the transition part in the valve body and form a seal, and the first O-shaped sealing ring clamped on the inner wall of the valve body mounting mouth can abut against the first valve core and form a seal, thus greatly enhancing the self-sealing property of the plug, reducing the probability of leakage of a single sealing ring structure after the plug is used for a long time or the plug and the socket are plugged in and out for many times, ensuring that the plug and the socket can maintain reliable self-sealing effect in the disconnected state, thereby ensuring that the cooling liquid does not flow out, and finally ensuring the normal operation of the liquid cooling system.

[0021] 3、The assembling structure among the valve body, the valve core, the T-shaped sealing ring and the first O-shaped sealing ring is simple and convenient to assemble, and can meet the requirements of high sealing property and high reliability when the plug and the socket are connected or disconnected. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the overall structure sectional view of the plug of the embodiment of the present application.

[0023] Figure 2 is the overall structure sectional view of the valve body of the embodiment of the present application.

[0024] Figure 3 is the assembling front view of the valve core and the T-shaped sealing ring of the embodiment of the present application.

[0025] Figure 4 is the assembling sectional view of the valve core and the T-shaped sealing ring of the embodiment of the present application.

[0026] Figure 5 is the overall structure sectional view of the valve core of the embodiment of the present application.

[0027] Figure 6 is the overall structure sectional view of the first valve core of the embodiment of the present application.

[0028] Figure 7 is the overall structure sectional view of the second valve core of the embodiment of the present application.

[0029] Figure 8 is the overall structure front view of the T-shaped sealing ring of the embodiment of the present application.

[0030] The marks of the components in the drawings are as follows: 1, shell; 101, fifth clamping groove; 2, valve body; 201, mounting port; 202, first clamping groove; 203, transition part; 204, mounting cavity; 205, flange; 206, second clamping groove; 3, valve core; 4, first valve core; 401, first fixed ring groove; 402, threaded hole; 403, anti-glue spilling groove; 5, second valve core; 501, second fixed ring groove; 502, threaded column; 503, assembling head; 6, T-shaped ring groove; 601, sealing port; 602, fixed port; 7, T-shaped sealing ring; 701, sealing part; 702, fixed part; 8, first O-shaped sealing ring; 9, spring; 10, second O-shaped sealing ring; 11, nut; 1101, third clamping groove; 1102, fourth clamping groove; 12, third O-shaped sealing ring; 13, fourth O-shaped sealing ring; 14, fifth O-shaped sealing ring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. It should be explained that if the description of “first”, “second” and the like is involved in the embodiments of the present application, the description of “first”, “second” and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can be explicitly or implicitly included at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel solutions. For example, “A and / or B” includes A solution, or B solution, or A and B solution. In addition, “multiple” refers to more than two.

[0032] Referring to Figures 1-4 The fluid connector plug provided by the embodiments of the present application comprises a shell 1, a valve body 2, a valve core 3, a T-shaped sealing ring 7, a first O-shaped sealing ring 8 and a spring 9.

[0033] The valve body 2 is inserted into the shell 1, and the inside of the valve body 2 is sequentially provided with a mounting port 201, a transition part 203 and a mounting cavity 204 which are in communication with each other, the valve core 3 is placed in the mounting port 201, the spring 9 is placed in the mounting cavity 204, and the valve core 3 has a movement stroke of extruding the spring 9 and extending into the mounting cavity 204 or loosening the spring 9 and resetting when the plug is connected or separated from the socket.

[0034] The valve core 3 comprises a first valve core 4 and a second valve core 5 which are matched by screwing, the T-shaped sealing ring 7 is arranged at the joint position of the first valve core 4 and the second valve core 5 and is matched with the T-shaped ring groove 6 formed by splicing the first valve core 4 and the second valve core 5, and can be abutted to the transition part 203 when the valve core 3 is reset, and the first O-shaped sealing ring 8 is matched with the first clamping groove 202 provided in the mounting port 201 and can be abutted to the first valve core 4 when the valve core 3 is reset.

[0035] In the present application, on the one hand, the valve core adopts a split threaded connection structure, which can form a T-shaped ring groove at the assembly position, the T-shaped sealing ring is matched with the T-shaped ring groove, and the fixed part can be fixed and clamped with the threaded assembly of the two valve cores, the sealing part extends outward and fills the gap between the two valve cores, thus greatly improving the assembly stability of the valve core and the T-shaped sealing ring, enhancing the anti-flow impact effect, reducing the risk of the T-shaped sealing ring being knocked out of the groove or being damaged under extreme conditions, ensuring that the plug and socket can maintain good sealing state in the connected state, thereby ensuring the normal flow of cooling liquid without leakage, and finally ensuring the normal operation of the liquid cooling system; on the other hand, the plug adopts a double-layer self-sealing structure, the valve core can be slid to the mounting port of the valve body and inserted and matched with it, the fixed part of the T-shaped sealing ring is fixedly matched with the valve core, and the sealing part can abut against the transition part in the valve body and form a seal, and the first O-shaped sealing ring installed on the inner wall of the valve body mounting port can abut against the first valve core and form a seal, thus greatly enhancing the self-sealing property of the plug, reducing the probability of leakage of a single sealing ring structure after the plug is used for a long time or the plug and socket are plugged in and out for many times, ensuring that the plug and socket can maintain reliable self-sealing effect in the disconnected state, thereby ensuring that the cooling liquid does not flow out, and finally ensuring the normal operation of the liquid cooling system.

[0036] Referring to Figures 3-8 In the present embodiment, the T-shaped ring groove 6 includes a sealing port 601 and a fixed port 602, the sealing port 601 is arranged in the middle of the periphery of the fixed port 602, and is connected with the fixed port 602 to form a reverse T-shaped structure in cross section;

[0037] The T-shaped sealing ring 7 includes a sealing part 701 and a fixed part 702, the sealing part 701 and the fixed part 702 are connected to form a reverse T-shaped structure in cross section, the fixed part 702 is in a ring structure and is matched with the fixed port 602, and the sealing part 701 is arranged along the middle of the periphery of the fixed part 702 and is matched with the sealing port 601.

[0038] In this way, the T-shaped sealing ring 7 is matched with the T-shaped ring groove 6, the fixed part 702 can be fixed and clamped into the fixed port 602 with the threaded assembly of the first valve core 4 and the second valve core 5, and the sealing part 701 extends outward into the sealing port 601 and fills the gap between the two valve cores, thereby not only improving the assembly stability of the valve core 3 and the T-shaped sealing ring 7, but also enhancing the anti-flow impact effect and greatly reducing the risk of the T-shaped sealing ring 7 being knocked out of the groove or being damaged under extreme conditions.

[0039] Referring to Figures 3-8In the embodiment, a threaded hole 402 is centrally formed on the first valve core 4, a first fixed ring groove 401 is formed on the first valve core 4 and surrounds the threaded hole 402, a threaded column 502 is fixed on the second valve core 5, a second fixed ring groove 501 is formed on the second valve core 5 and surrounds the threaded column 502, the threaded column 502 is threadedly matched with the threaded hole 402, the first fixed ring groove 401 is oppositely arranged with the second fixed ring groove 501, and the inner and outer diameters of the first fixed ring groove 401 are equal to those of the second fixed ring groove 501, and the first fixed ring groove 401 and the second fixed ring groove 501 are spliced to form the fixed port 602 when the threaded column 502 and the threaded hole 402 are inserted, and a gap is left between the outer edge of the first fixed ring groove 401 on the first valve core 4 and the outer edge of the second fixed ring groove 501 on the second valve core 5, and the gap is spliced to form the sealing port 601 when the threaded column 502 and the threaded hole 402 are inserted. In this way, during the assembly process, the T-shaped sealing ring 7 should be placed into the first fixed ring groove 401 before the first valve core 4 is connected with the second valve core 5, and then the two valve cores are threadedly connected, and when the two valve cores are assembled to form the complete valve core 3, the fixed part 702 is clamped in the fixed port 602, and the sealing part 701 extends outwardly and is clamped in the sealing port 601, thereby improving the installation stability of the T-shaped sealing ring 7 in the valve core 3, greatly enhancing the effect of the T-shaped sealing ring 7 against flow impact, reducing the risk of the T-shaped sealing ring 7 being knocked out of the groove or being damaged under extreme conditions, and ensuring that the plug and the socket can maintain a good sealing state in the connected state.

[0040] Referring to Figures 6-7 In the embodiment, a glue overflow prevention groove 403 is formed on the first valve core 4 and surrounds the port of the threaded hole 402, and the outer part of the threaded column 502 is coated with glue, and the glue overflow prevention groove 403 is used to store the excess glue when the threaded column 502 is threadedly connected with the threaded hole 402. In this way, the valve core 3 adopts a split structure and is formed by threadedly inserting the first valve core 4 and the second valve core 5, and in order to ensure the stability of the thread connection between the two valve cores, the thread connection part of the two valve cores needs to be coated with glue in advance, that is, a layer of glue is uniformly coated on the outer part of the threaded column 502, and at the same time, the glue overflow prevention structure is arranged on the first valve core 4, that is, the glue overflow prevention groove 403 is formed on the port of the threaded hole 402, and it is known that the diameter of the glue overflow prevention groove 403 is greater than the diameter of the threaded hole 402, so that when too much glue is coated, the glue can be prevented from overflowing into the T-shaped ring groove 6, and the phenomenon of hardening deformation of the T-shaped sealing ring 7 and the decline of the sealing performance can be avoided.

[0041] Referring to Figures 1-8In the embodiment, the installation port 201, the transition part 203 and the installation cavity 204 are sequentially communicated from the port part to the tail part of the valve body 2, the diameter of the installation port 201 is smaller than that of the installation cavity 204, the transition part 203 is in the shape of a trumpet port and has a slope structure in cross section, the first valve core 4 is slidably inserted into the installation port 201, the second valve core 5 is towards the installation cavity 204 and abuts against the spring 9, the assembly head 503 of the second valve core 5 fixed at the tail part extends into the spring 9, and the sealing part 701 has a movement stroke abutting against the transition part 203 with the sliding reset of the first valve core 4. In this way, when the plug is inserted into the socket, the valve core 3 can slide along the installation port 201 into the installation cavity 204 and abut against the spring 9, at this time, the sealing part 701 is separated from the transition part 203, and the cooling liquid can flow along the installation port 201 to the socket, when the plug is separated from the socket, the valve core 3 can slide along the installation port 201 to the port part of the valve body 2 until reset, at this time, the sealing part 701 abuts against the transition part 203 and forms a seal, and the cooling liquid cannot flow out of the installation port 201, thereby greatly enhancing the self-sealing effect of the plug.

[0042] Referring to Figures 1-2 In the embodiment, the first clamping groove 202 is annularly arranged along the inner wall of the installation port 201 and close to the port part of the valve body 2, the first O-shaped sealing ring 8 is clamped and matched with the first clamping groove 202 and has a movement stroke abutting between the valve body 2 and the first valve core 4 with the sliding reset of the first valve core 4. In this way, when the plug is inserted into the socket, the valve core 3 can slide along the installation port 201 into the installation cavity 204 and abut against the spring 9, at this time, the first O-shaped sealing ring 8 is separated from the first valve core 4, and the cooling liquid can flow along the installation port 201 to the socket, when the plug is separated from the socket, the valve core 3 can slide along the installation port 201 to the port part of the valve body 2 until reset, at this time, the first O-shaped sealing ring 8 abuts against the first valve core 4 and forms a seal, and the cooling liquid cannot flow out of the installation port 201, the T-shaped sealing ring 7 and the first O-shaped sealing ring 8 constitute a double-layer self-sealing structure in the plug, thereby reducing the leakage probability of a single sealing ring structure due to long use time of the plug or repeated insertion and removal of the plug from the socket, and ensuring that the plug and the socket can keep a reliable self-sealing effect in the disconnected state.

[0043] Referring to Figures 1-2In the embodiment, the nut 11 is sleeved on the outer portion of the valve body 2 until abutting against the flange 205 fixed on the periphery of the valve body 2, and a third O-shaped sealing ring 12 is sleeved in a third clamping groove 1101 formed in the bottom of the nut 11 and abuts against the nut 11 and the flange 205. In this way, the valve body 2 and the nut 11 are sealed by the third O-shaped sealing ring 12, so that the cooling liquid cannot leak from the gap between the valve body 2 and the nut 11, ensuring the sealing reliability of the plug.

[0044] Referring to Figures 1-2 In the embodiment, the nut 11 is connected with the inner wall of the shell 1 through threads until the valve body 2 is pressed into the shell 1, and a fourth O-shaped sealing ring 13 is sleeved in a fourth clamping groove 1102 formed in the mouth of the nut 11 and abuts against the nut 11 and the shell 1. In this way, the nut 11 and the shell 1 are connected through fine threads and the valve body 2 is pressed, which can ensure the assembly stability between the valve body 2 and the shell 1.

[0045] Referring to Figures 1-2 In the embodiment, a second O-shaped sealing ring 10 is sleeved in a second clamping groove 206 formed in the bottom of the flange 205 and abuts against the flange 205 and the shell 1 and is pressed against the shell 1 when the nut 11 is screwed. In this way, the shell 1 and the valve body 2 are sealed by the second O-shaped sealing ring 10, so that the cooling liquid cannot leak from the gap between the shell 1 and the valve body 2, ensuring the sealing reliability of the plug.

[0046] Referring to Figures 1-2 In the embodiment, a plurality of fifth clamping grooves 101 are formed on the outer portion of the shell 1 at intervals, and a fifth O-shaped sealing ring 14 is sleeved in each of the fifth clamping grooves 101 and abuts against the inner wall of the mounting hole when the plug is mounted. In this way, the sealing stability of the shell 1 and the mounting hole wall of the plug is improved.

[0047] In summary, in the present application, on the one hand, the valve core adopts a split threaded connection structure, which can form a T-shaped ring groove at the assembly position, the T-shaped sealing ring is matched with the T-shaped ring groove, and the fixed part can be fixed and clamped with the threaded assembly of the two valve cores, the sealing part extends outward and fills the gap between the two valve cores, thus greatly improving the assembly stability of the valve core and the T-shaped sealing ring, enhancing the resistance to flow impact, reducing the risk of the T-shaped sealing ring being knocked out of the groove or damaged under extreme conditions, ensuring that the plug and socket can maintain good sealing state in the connected state, thereby ensuring that the cooling liquid can flow normally and not leak, and finally ensuring the normal operation of the liquid cooling system; on the other hand, the plug adopts a double-layer self-sealing structure, the valve core can be slid to the mounting port of the valve body and inserted and matched with it, the fixed part of the T-shaped sealing ring is fixedly matched with the valve core, and the sealing part can abut to the transition part in the valve body and form a seal, and the first O-shaped sealing ring installed on the inner wall of the valve body mounting port can abut to the first valve core and form a seal, thus greatly enhancing the self-sealing property of the plug, reducing the probability of leakage of a single sealing ring structure after the plug is used for a long time or the plug and socket are plugged in and out for many times, ensuring that the plug and socket can maintain reliable self-sealing effect in the disconnected state, thereby ensuring that the cooling liquid does not flow out, and finally ensuring the normal operation of the liquid cooling system; it can be seen that the assembly structure between the valve body, the valve core, the T-shaped sealing ring and the first O-shaped sealing ring is simple and the assembly operation is convenient, which can meet the requirements of high sealing property and high reliability of the plug and socket in the connected or disconnected state.

[0048] It should be understood that the examples and embodiments described herein are only for illustration and are not intended to limit the present application, and those skilled in the art can make various modifications or changes according to it, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fluid connector plug, characterized by: The utility model provides a valve, which comprises a shell (1), a valve body (2), a valve core (3), a T-shaped sealing ring (7), a first O-shaped sealing ring (8) and a spring (9). The valve body (2) is inserted into the shell (1), and the inside of the valve body (2) is sequentially provided with an installation opening (201), a transition part (203) and an installation cavity (204) which are in communication with each other; the valve core (3) is arranged in the installation opening (201); the spring (9) is arranged in the installation cavity (204); the valve core (3) has a movement stroke for extruding the spring (9) and extending into the installation cavity (204) or releasing the spring (9) and resetting when a plug is connected with a socket or separated from the socket. The valve core (3) comprises a first valve core (4) and a second valve core (5) which are threadedly connected; the T-shaped sealing ring (7) is arranged at the joint of the first valve core (4) and the second valve core (5) and is matched with a T-shaped ring groove (6) formed by the joint of the first valve core (4) and the second valve core (5); the T-shaped sealing ring (7) can abut against the transition part (203) when the valve core (3) is reset; the first O-shaped sealing ring (8) is matched with a first clamping groove (202) formed in the installation opening (201) and can abut against the first valve core (4) when the valve core (3) is reset.

2. The fluid connector plug of claim 1, wherein: The T-shaped ring groove (6) comprises a sealing opening (601) and a fixing opening (602); the sealing opening (601) is formed in the middle of the periphery of the fixing opening (602) and is connected with the fixing opening (602) to form a reverse T-shaped structure in cross section. The T-shaped sealing ring (7) comprises a sealing part (701) and a fixing part (702); the sealing part (701) and the fixing part (702) are connected to form a reverse T-shaped structure in cross section; the fixing part (702) is in the form of a ring and is matched with the fixing opening (602); the sealing part (701) is arranged along the middle of the periphery of the fixing part (702) and is matched with the sealing opening (601).

3. The fluid connector plug of claim 2, wherein: A threaded hole (402) is formed in the center of the first valve core (4); a first fixing ring groove (401) is formed around the threaded hole (402) on the first valve core (4); a threaded column (502) is fixed in the center of the second valve core (5); a second fixing ring groove (501) is formed around the threaded column (502) on the second valve core (5); the threaded column (502) is matched with the threaded hole (402); the first fixing ring groove (401) and the second fixing ring groove (501) are arranged oppositely and have the same inner and outer diameters; the first fixing ring groove (401) and the second fixing ring groove (501) are matched with the fixing opening (602) when the threaded column (502) and the threaded hole (402) are connected; a gap is formed between the outer edge of the first fixing ring groove (401) on the first valve core (4) and the outer edge of the second fixing ring groove (501) on the second valve core (5); the gap is matched with the sealing opening (601) when the threaded column (502) and the threaded hole (402) are connected.

4. The fluid connector plug of claim 3, wherein: The first valve core (4) is provided with an anti-glue overflow groove (403) on the outer periphery of the mouth of the threaded hole (402), and the outer part of the threaded column (502) is coated with glue, and the anti-glue overflow groove (403) is used to store the excess glue when the threaded column (502) is screwed with the threaded hole (402).

5. The fluid connector plug of claim 2, wherein: The mounting port (201), the transition part (203) and the mounting cavity (204) are sequentially communicated from the mouth to the tail of the valve body (2), the caliber of the mounting port (201) is smaller than that of the mounting cavity (204), the transition part (203) is in the shape of a trumpet mouth and has a slope structure in cross section, the first valve core (4) is slidably inserted into the mounting port (201), the second valve core (5) is directed to the mounting cavity (204) and abuts against the spring (9), the assembly head (503) at the tail of the second valve core (5) extends into the spring (9), and the sealing part (701) has a movement stroke abutting against the transition part (203) when the first valve core (4) is reset.

6. The fluid connector plug of claim 1, wherein: The first clamping groove (202) is annularly arranged along the inner wall of the mounting port (201) and close to the mouth of the valve body (2), the first O-shaped sealing ring (8) is matched with the first clamping groove (202) and has a movement stroke abutting between the valve body (2) and the first valve core (4) when the first valve core (4) is reset.

7. The fluid connector plug of claim 1, wherein: A screw cap (11) is further included, which is sleeved on the outer part of the valve body (2) until abutting against the flange (205) fixed on the outer periphery of the valve body (2), and a third clamping groove (1101) is arranged in the bottom of the screw cap (11) and a third O-shaped sealing ring (12) is clamped in the third clamping groove (1101), and the third O-shaped sealing ring (12) abuts between the screw cap (11) and the flange (205).

8. The fluid connector plug of claim 7, wherein: The screw cap (11) can be connected with the inner wall of the shell (1) through threads until the valve body (2) is pressed into the shell (1), and a fourth clamping groove (1102) is arranged in the mouth of the screw cap (11) and a fourth O-shaped sealing ring (13) is clamped in the fourth clamping groove (1102), and the fourth O-shaped sealing ring (13) abuts between the screw cap (11) and the shell (1).

9. The fluid connector plug of claim 7, wherein: A second clamping groove (206) is arranged in the bottom of the flange (205) and a second O-shaped sealing ring (10) is clamped in the second clamping groove (206), and the second O-shaped sealing ring (10) abuts between the flange (205) and the shell (1) and can be tightly abutted against the shell (1) when the screw cap (11) is screwed in.

10. The fluid connector plug of claim 1, wherein: A plurality of fifth clamping grooves (101) are arranged on the outer part of the shell (1) at intervals, and a fifth O-shaped sealing ring (14) is clamped in each fifth clamping groove (101), and the fifth O-shaped sealing ring (14) is used to tightly abut against the inner wall of the mounting hole when the plug is mounted.

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