CN216867853U - fluid connector - Google Patents

Abstract

The utility model relates to a fluid connector. The fluid connector comprises a male joint and a female joint, the male joint comprises a male joint housing, a male joint fluid channel is arranged in the male joint housing, and a male joint valve core and a male joint spring are arranged in the male joint fluid channel; The female joint includes a female joint shell, and the female joint shell has a female joint fluid channel, and the female joint fluid channel has a female joint valve core and a female joint spring; the male joint shell includes an insertion part, and the male joint valve core includes a valve seat and a male joint ejector rod , the spool of the female joint includes the ejector rod of the female joint and the inserting and matching part; the first sealing ring and the second sealing ring are arranged between the spool of the female joint and the shell of the female joint; when the male joint is inserted into the female joint, the ejector rod of the female joint Contact with the male joint ejector first, the male joint spring is compressed until the male joint fluid channel is opened, then the insert part contacts the insert mating part, the female joint spring is compressed, and after the second sealing ring is sealed with the inserted part, the female joint fluid channel is opened.

Description

fluid connector

technical field

The utility model relates to the field of connectors, in particular to a fluid connector capable of self-sealing.

Background technique

The current high-voltage electrical equipment is usually filled with gas such as sulfur hexafluoride as insulating and arc extinguishing medium in the gas chamber. The connection method between the device and the inflation valve is generally screwed in or fastened with bolts, and the operation of the connection process is relatively inconvenient. In addition, when using the inflatable device to inflate, due to the poor sealing between the inflator and the inflatable valve, air leakage is easy to occur, resulting in gas loss, affecting the gas moisture and purity in the gas chamber, thereby affecting the reliability of high-voltage electrical equipment. cause serious power grid operation accidents.

Utility model content

The purpose of the utility model is to provide a fluid connector to solve the problem of air leakage at the connection between the inflation device and the inflation valve when the existing inflation device is inflated into the air chamber.

The technical scheme of the fluid connector provided by the utility model is:

The fluid connector includes a male joint and a female joint that is inserted and matched with the male joint. The male joint includes a male joint housing, and the male joint housing has a male joint fluid channel extending back and forth. The male joint valve core for opening and closing the channel, the male joint valve core has an open state to open the male joint fluid channel and a closed state to close the male joint fluid channel. The male joint spring that keeps the valve core of the joint closed; the female joint includes a female joint shell, and the female joint shell has a female joint fluid channel extending forward and backward, and the female joint fluid channel is guided and assembled to control the opening and closing of the female joint fluid channel. The valve core, the female connector valve core has an open state to open the female connector fluid channel and a closed state to close the female connector fluid channel. The female connector fluid channel is also provided with an elastic force for the female connector valve core to keep the female connector valve core in a closed state. The female connector spring; the male connector housing includes an insertion part inserted into the female connector housing, the male connector valve core includes a valve seat capable of blocking the male connector fluid channel and a male connector ejector rod that guides and is movably assembled in the male connector fluid channel, the female connector The connector valve core includes a female connector ejector rod that pushes and fits with the male connector ejector rod front and rear, and also includes an insert matching part that pushes and fits with the front and rear of the insertion part; a female connector valve core is provided between the female connector valve core and the female connector shell. When in the closed state, the first sealing ring that realizes the sealing between the valve core of the female joint and the casing of the female joint; the elastic force of the spring of the female joint is greater than that of the spring of the male joint; a second sealing ring is arranged in the fluid channel of the female joint; The two sealing rings are arranged before and after;

When the male connector and the female connector are mated, the male connector ejector rod and the male connector ejector rod first contact and push each other, the male connector spring is compressed until the fluid channel of the male connector is opened, and then the insertion part and the insertion mating part contact and push each other. , the spring of the female joint is compressed, and after the second sealing ring is sealed with the insertion part, the fluid channel of the female joint is opened.

Beneficial effect: when the fluid connector of the present invention is in use, the female connector is screwed on the outer wall of the air chamber of the high-voltage electrical equipment as the inflation valve of the air chamber. The male joint is connected, and the front end of the male joint is inserted into the female joint. The male joint fluid channel, the female joint fluid channel, the air chamber, and the inflation pipe are connected to each other. At this time, the insertion part of the male joint shell forms a seal with the second sealing ring. In order to prevent air leakage at the connection between the male connector and the female connector during inflation, start the inflation device, and the gas smoothly enters the air chamber. After the gas in the air chamber meets the requirements, the male connector is pulled out, the fluid channel of the female connector is closed, and the inflation process of the air chamber is completed. The fluid connector of the utility model has good air tightness during the inflation process, and can effectively prevent the occurrence of air leakage.

Further, the female connector is provided with a locking structure for locking the male connector and the female connector after the male connector and the female connector are inserted into each other.

Beneficial effect: the setting of the locking structure is convenient for locking the male connector and the female connector.

Further, the locking structure includes a button arranged on the housing of the female connector and a button spring that pushes against the button, the button has an insertion channel for the insertion part to pass through, and the inner wall of the insertion channel has a limit protrusion, and the insertion part has an insertion channel. The slot for the limit protrusion to be inserted into; when the male connector and the female connector are inserted into each other, the insert part pushes the limit protrusion to overcome the elastic force of the button spring, so that the limit protrusion enters the card groove to realize the male connector and the female connector. of locking.

Beneficial effects: The locking structure of this structural form is simple in structure and convenient in operation.

Further, the limiting protrusion is provided with a guide slope that press-fits with the insertion portion to guide the button to move in the direction of compressing the button spring.

Beneficial effect: the setting of the guiding slope makes it easier for the limiting protrusion to enter the clamping groove.

Further, the housing of the female connector has a blocking part which is matched with the button to stop, so as to prevent the button from being separated from the housing of the female connector.

Beneficial effects: The setting of the blocking part makes the button not easily separated from the female connector shell and not easily lost.

Further, the female joint housing includes a female joint sealing seat, a female joint cover, and a female joint valve seat. The female joint valve seat is installed into the female joint sealing seat from front to back, and the female joint cover is threadedly connected to the female joint sealing seat. Compress the valve seat of the female joint, the valve seat of the female joint is used for sealing and matching with the valve core of the female joint, the button is arranged on the cover of the female joint, and a restriction inserted into the insertion channel is clamped between the valve seat of the female joint and the cover of the female joint The button is released from the collar of the cover of the female connector, and the collar constitutes the stop part.

Beneficial effect: the female connector shell adopts this structure form to facilitate the installation of the female connector spring and the female connector valve core and the processing and forming of the female connector shell.

Further, the second sealing ring is arranged in the sealing ring installation groove enclosed by the clamping ring and the valve seat of the female joint.

Beneficial effects: the arrangement of the sealing ring installation groove makes the installation of the second sealing ring more convenient.

Further, the male joint housing includes a first part of the male joint and a second part of the male joint, the first part of the male joint and the second part of the male joint are threadedly connected, and a sealing ring of the male joint shell is arranged between the first part of the male joint and the second part of the male joint .

Beneficial effects: The male joint shell adopts this structure to facilitate the installation of the male joint spring and the male joint valve core and the processing and forming of the male joint shell. In addition, the arrangement of the male joint shell sealing ring enhances the sealing effect of the male joint shell.

Further, the part of the fluid channel of the male joint on the insertion part is provided with a guide structure which is guided and slidably matched with the male joint ejector rod.

Beneficial effects: the provision of the guide structure enables the male joint ejector rod to move forward and backward along the male joint fluid channel better.

Further, the guide structure includes a guide ring fixed in the fluid channel of the male joint, and the male joint top rod is guided and slidably fitted with the guide ring.

Beneficial effects: the structure of the guide ring is simple, and the processing is convenient.

Description of drawings

1 is a schematic structural diagram of a male joint in Embodiment 1 of the fluid connector of the present invention;

FIG. 2 is a schematic structural diagram of the female joint in Embodiment 1 of the fluid connector of the present invention.

Explanation of reference numerals: 1, male joint; 2, female joint; 3, male joint housing; 301, male joint first part; 302, male joint second part; 4, male joint fluid passage; 5, male joint valve core; 501, male joint ejector rod; 502, valve seat; 6, male joint spring; 7, male joint shell sealing ring; 8, spring installation part; 801, positioning installation groove; 9, blocking part; 10, installation groove through hole ; 11, guide ring; 12, female joint housing; 121, female joint cover; 122, female joint sealing seat; 123, female joint valve seat; 124, retaining ring; 13, female joint fluid channel; 14, female joint valve Core; 141, female connector ejector rod; 142, insert and fit part; 15, female connector spring; 16, first sealing ring; 17, second sealing ring; 18, third sealing ring; 19, sealing ring installation groove; 20 , insert part; 21, spring installation cavity; 22, valve core fluid channel; 23, gasket; 24, female joint sealing ring; 25, button; 251, insertion channel; 26, button spring; 27, limit protrusion; 28 , card slot.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clear, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

It should be noted that, in the specific implementation of the present invention, terms that may appear, such as “first” and “second” and other relational terms are only used to distinguish one entity or operation from another entity or operation not necessarily require or imply the existence of such an actual relationship or order between these entities or operations. Furthermore, terms such as "comprising", "comprising" or any other variation thereof that may appear are intended to encompass a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed or inherent to such a process, method, article or apparatus are also included. Without further limitation, the appearance of the phrase "comprising a..." etc. qualifying elements does not preclude the presence of additional identical elements in the process, method, article or device that includes the element.

In the description of the present invention, unless otherwise expressly specified and limited, terms that may appear such as "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection or indirect connection through an intermediate medium, or may be internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

In the description of the present invention, unless otherwise expressly specified and limited, the term "provided" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or it may be separate from the body. The body is arranged and connected to the body, and the connection can be a detachable connection or a non-detachable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The present utility model will be further described in detail below in conjunction with the embodiments.

Embodiment 1 of the fluid connector provided in the utility model:

As shown in Figures 1 and 2, the fluid connector of the present invention includes a male connector 1 and a female connector 2. The outer wall of the gas chamber of the high-voltage electrical equipment is provided with a gas hole that communicates the gas chamber and the outside world. The front end of the female connector 2 is connected to the gas hole. Threaded connection so that the female connector 2 acts as an inflation valve for the air chamber. When the air chamber needs to be inflated, insert the front end of the male connector 1 into the rear end of the female connector 2, and the rear end of the male connector 1 is connected to the inflatable device through the inflation pipe. The joint 1 and the female joint 2 enter the air chamber to realize the inflation of the air chamber. Of course, in other embodiments, the fluid passing through the fluid connector may also be liquid, and in this case, the female connector acts as a liquid filling valve of a device that needs to be filled with liquid.

The male joint 1 includes a male joint housing 3, and the male joint housing 3 has a male joint fluid channel 4 extending back and forth, and a male joint valve core 5 for controlling the opening and closing of the male joint fluid channel 4 is guided and movably assembled in the male joint fluid channel 4. The joint spool 5 has an open state to open the male joint fluid passage 4 and a closed state to close the male joint fluid passage 4 . In addition, a male joint spring 6 is provided in the male joint fluid passage 4, and the elastic force of the male joint spring 6 acts on the male joint valve core 5 to keep the male joint valve core 5 in a closed state.

In order to facilitate the installation of the male joint spring 6 and the male joint valve core 5 and facilitate the processing and molding of the male joint housing 3, the male joint housing 3 includes the male joint first part 301 and the male joint second part 302, the male joint first part 301 and the male joint The second part 302 adopts threaded connection to realize the fixed connection between the two. In addition, in order to strengthen the sealing effect of the male joint housing 3, a male joint housing sealing ring 7 is provided at the connection between the male joint first part 301 and the male joint second part 302.

In this embodiment, the valve core 5 of the male joint includes a male joint ejector rod 501 which is guided and movably assembled in the male joint fluid channel 4 and a valve seat 502 capable of blocking the male joint fluid channel 4. The valve seat 502 includes a valve seat 502 for installing the male joint. The spring mounting part 8 of the joint spring 6 and the blocking part 9 for blocking the fluid passage 4 of the male joint. Specifically, the spring installation part 8 has a positioning installation groove 801, the male spring 6 is installed in the positioning installation groove 801, and the groove wall of the positioning installation groove 801 is guided and slidably fitted with the inner wall of the first part 301 of the male joint. In addition, in order to ensure the male joint When the valve core 5 is in the open state, the front and rear of the male joint fluid channel 4 are unobstructed, and the mounting groove through hole 10 is provided on the groove wall of the positioning and mounting groove 801 . The blocking part 9 has a conical surface that fits with the inner wall surface of the second part 302 of the male joint. The arrangement of the conical surface makes the valve core 5 of the male joint in the closed state, the sealing effect of the valve core 5 of the male joint on the fluid passage 4 of the male joint is more effective. it is good.

In the male joint fluid channel 4, there is also a guide structure for guiding and sliding cooperation with the male joint ejector rod 501. In this embodiment, the guide structure includes a guide ring 11 fixed on the inner wall of the male joint housing 3, and the guide ring 11 is connected to the male joint. The joint ejector rod 501 guides the sliding fit. The guide ring 11 is used to guide and slide with the male joint ejector rod 501, and the structure is simple and easy to process.

The female joint 2 includes a female joint housing 12, and the female joint housing 12 has a female joint fluid channel 13 extending back and forth. The female joint fluid channel 13 is guided and movably assembled with a female joint valve core 14 that controls the opening and closing of the female joint fluid channel 13. The joint spool 14 has an open state to open the female joint fluid passage 13 and a closed state to close the female joint fluid passage 13 . In addition, the female connector fluid channel 13 is also provided with a female connector spring 15, and the elastic force of the female connector spring 15 acts on the female connector valve core 14 to keep the female connector valve core 14 in a closed state.

In order to facilitate the installation of the female joint spring 15 and the female joint valve core 14 and facilitate the processing and molding of the female joint housing 12, the female joint housing 12 includes a female joint cover 121, a female joint sealing seat 122 and a female joint valve seat 123, and the female joint valve The seat 123 is installed into the female joint sealing seat 122 from the front to the rear. The female joint cover 121 and the female joint sealing seat 122 are threadedly connected to press the female joint valve seat 123, and the female joint valve seat 123 is used for sealing with the female joint valve core 14. . A first sealing ring 16 is provided between the female joint valve core 14 and the female joint valve seat 123 to enhance the sealing effect between the female joint valve core 14 and the female joint valve seat 123 when the female joint valve core 14 is in a closed state. The joint fluid channel 13 is also provided with a second sealing ring 17 , and the first sealing ring 16 and the second sealing ring 17 are arranged in front of each other. In addition, a third sealing ring 18 is provided between the female joint sealing seat 122 and the female joint valve seat 123 to enhance the sealing effect of the female joint housing 12 .

In addition, in order to facilitate the positioning and installation of the second sealing ring 17, the female joint housing 12 further includes a retaining ring 124, the retaining ring 124 is sandwiched between the female joint cover 121 and the female joint valve seat 123, and the clipping ring 124 is connected to the female joint valve. The seat 123 encloses a sealing ring installation groove 19 for positioning and installing the second sealing ring 17 .

In this embodiment, the male joint housing 3 includes an insertion portion 20 inserted into the female joint housing 12 , the female joint valve core 14 includes a female joint plunger 141 that pushes forward and fits with the male joint plunger 501 , and also includes a male joint plunger 141 . The insert part 20 of the housing 3 pushes the insert fit part 142 forward and backward, and the female connector ejector pin 141 is fixedly connected with the insert fit part 142 by means of press fitting. Specifically, when the female connector valve core 14 is in the closed state, the insert fitting portion 142 closely fits the female connector valve seat 123 to close the female connector fluid channel 13 , and the insert fitting portion 142 and the female connector sealing seat 122 surround A spring mounting cavity 21 for positioning and mounting the female connector spring 15 is formed. In addition, in order to ensure that the female connector spool 14 is in an open state, the front and rear of the female connector fluid passage 13 is unobstructed, and the inserting and mating portion 142 is provided with a spool fluid passage 22 . In particular, when the female connector valve core 14 is in the closed state, the second sealing ring 17 is at the outer periphery of the inserting and fitting portion 142 , and the inserting and fitting portion 142 can prevent the second sealing ring 17 from coming out of the sealing ring installation groove 19 .

In order to enhance the air tightness of the connection between the female joint 2 and the air hole on the outer wall of the gas, and avoid the phenomenon of air leakage, the front end of the female joint sealing seat 122 is provided with a gasket 23 and a female joint sealing ring 24 as an end face seal.

It should be noted that, in the fluid connector of the present invention, the elastic force of the female connector spring 15 is greater than the elastic force of the male connector spring 6 .

When the male connector 1 and the female connector 2 are inserted, the female connector ejector rod 141 and the male connector ejector bar 501 first contact and push each other. Since the elastic force of the female connector spring 15 is greater than the elastic force of the male connector spring 6, the male connector spring 6 is compressed. , the male joint valve core 5 moves backwards, the conical surface of the blocking part 9 of the male joint valve core 5 is separated from the inner wall surface of the second part 302 of the male joint, and the male joint fluid channel 4 is opened at this time. Continue to push the male joint 1 forward, the insertion part 20 of the male joint housing 3 will contact with the insertion and mating part 142 of the female joint valve core 14 and push each other. When the male joint spring 6 is compressed to an incompressible state, the female joint spring 15 is compressed, the insertion part 20 of the male joint housing 3 pushes the female joint valve core 14 to move forward, and the insertion part 20 of the male joint housing 3 will form a seal with the second sealing ring 17, in the insertion part of the male joint housing 3 After the 20 and the second sealing ring 17 form a sealing fit, the female connector valve core 14 continues to move forward until the valve core fluid channel 22 communicates with the spring mounting cavity 21. At this time, the female connector fluid head channel is opened, and the male connector fluid channel 4 It communicates with the female connector fluid channel 13 back and forth.

More specifically, the female connector 2 is provided with a method to lock the male connector 1 and the female connector 2 after the male connector 1 and the female connector 2 are plugged together, that is, after the male connector fluid channel 4 and the female connector fluid channel 13 are connected to each other. locking structure. In this embodiment, the locking structure includes a button 25 provided on the female connector housing 12 and a button spring 26 push-fitted with the button 25 . The button 25 is guided and assembled on the female connector housing 12 along the radial direction of the female connector 2 . Specifically, the button 25 has an insertion channel 251 into which the insertion portion 20 of the male connector housing 3 is inserted, and a limiting protrusion 27 is provided on the inner wall of the insertion channel 251 , and correspondingly, the outer wall of the insertion portion 20 has a limiting protrusion for Lift 27 into the card slot 28. When the male connector 1 is inserted into the female connector 2, the outer wall of the insertion part 20 presses the limiting protrusion 27 to overcome the elastic force of the button spring 26. After the fluid passages 13 of the female connector are connected to each other, the limiting protrusion 27 is snapped into the locking groove 28 to realize the locking of the male connector 1 and the female connector 2 . In particular, the limiting protrusion 27 is provided with a guide slope which cooperates with the insertion portion 20 to guide the button 25 to move in the direction of compressing the button spring 26 . The setting of the guide slope makes it easier for the limiting protrusion 27 to enter the locking groove 28 .

After using the fluid connector to inflate, just press the button 25, the insertion part 20 of the male connector housing 3 pops out from the female connector housing 12 under the elastic force of the female connector spring 15, and realizes the connection between the male connector 1 and the female connector 2. Unlocking, at the same time, the fluid channel 4 of the male connector and the fluid channel 13 of the female connector are also turned from open to closed under the action of the spring force of the respective springs.

In addition, the female connector housing 12 has a blocking portion for blocking and matching with the button 25 to prevent the button 25 from coming out of the female connector cover 121 after the button 25 is installed in the female connector housing 12 . In this embodiment, the retaining ring 124 constitutes a blocking portion, and the retaining ring 124 extends into the insertion channel 251 to stop and cooperate with the button 25 .

Instructions for the use of the fluid connector of the present utility model: firstly screw the female connector 2 on the outer wall of the gas chamber of the high-voltage electrical equipment as the inflation valve of the gas chamber. Connector 1 is connected, and then the front end of male connector 1 is inserted into female connector 2. After male connector 1 and female connector 2 are locked, the male connector fluid channel 4, the female connector fluid channel 13, the air chamber, and the inflation pipeline are connected to each other. Start the inflator, and the gas smoothly enters the air chamber. After the gas in the air chamber meets the requirements, press the button 25 on the female connector 2, and the male connector 1 and the female connector 2 are separated to realize the unlocking. At this time, the female connector fluid channel 13 of the female connector 2, which is the inflatable valve of the air chamber, is closed, and the completion is completed. The inflation process of the air chamber.

Embodiment 2 of the fluid connector of the present invention is different from Embodiment 1 in that the locking structure includes a jack screw and a threaded hole provided on the housing of the female connector. The screw is screwed into the threaded hole so that the end of the jack screw is pressed against the housing of the male joint to realize the locking of the male joint and the female joint.

Embodiment 3 of the fluid connector of the present invention is different from Embodiment 1 in that the button spring is bonded and fixed to the outer wall of the button to prevent the button from being separated from the housing of the female connector.

Embodiment 4 of the fluid connector of the present utility model is different from Embodiment 1 in that the guiding structure includes a chute arranged on the inner wall of the fluid channel of the male joint, and the chute is provided with a runner along the fluid channel of the male joint on the top rod of the male joint. The chute slides to fit the slider.

Embodiment 5 of the fluid connector of the present invention is different from Embodiment 1 in that the first part of the male joint and the second part of the male joint are fixedly connected by press fitting.

Embodiment 6 of the fluid connector of the present invention is different from Embodiment 1 in that the female joint cover and the female joint sealing seat are fixedly connected by press fitting.

Embodiment 7 of the fluid connector of the present utility model is different from Embodiment 1 in that the fluid channel of the male joint is not provided with a guiding structure for guiding and sliding cooperation with the ejector rod of the male joint, and the outer peripheral surface of the ejector rod of the male joint is connected to the housing of the male joint. The inner wall of the nipple is fitted to achieve the guide sliding fit between the push rod of the male joint and the shell of the male joint, and the push rod of the male joint is provided with an air passage to keep the fluid passage of the male joint unobstructed in the front and back.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. Equivalent structural changes should be included in the protection scope of the present invention.

Claims (10)

1. A fluid connector, characterized in that it comprises a male joint (1) and a female joint (2) that is inserted and matched with the male joint (1), the male joint (1) comprises a male joint housing (3), and the male joint housing ( 3) There is a male joint fluid channel (4) extending back and forth. The male joint fluid channel (4) is guided and movably equipped with a male joint valve core (5) that controls the opening and closing of the male joint fluid channel (4), and the male joint valve core. (5) It has an open state of opening the male connector fluid channel (4) and a closed state of closing the male connector fluid channel (4). A male joint spring (6) that keeps the male joint spool (5) in a closed state; the female joint (2) includes a female joint housing (12), and the female joint housing (12) has a front and rear extension of the female joint fluid channel (13) , the female connector fluid channel (13) is guided and movably equipped with a female connector valve core (14) that controls the opening and closing of the female connector fluid channel (13), and the female connector valve core (14) has an opening to open the female connector fluid channel (13). The state and the closed state of closing the female joint fluid channel (13), the female joint fluid channel (13) is also provided with a female joint that provides elastic force for the female joint valve core (14) to keep the female joint valve core (14) in a closed state A spring (15); the male joint housing (3) includes an insert portion (20) inserted into the female joint housing (12), and the male joint valve core (5) includes a valve seat (502) capable of blocking the male joint fluid passage (4) ) and a male joint ejector rod (501) which is guided and movably assembled in the male joint fluid channel (4), and the female joint valve core (14) includes a female joint ejector rod (141) that is push-fitted with the male joint ejector rod (501) front and rear. ), and also includes an insert fitting portion (142) that push-fits the front and rear of the insert portion (20); between the female joint valve core (14) and the female joint housing (12), a female joint valve core (14) is in the closed position. The first sealing ring (16) that realizes the sealing of the female joint valve core (14) and the female joint shell (12) in the state; the elastic force of the female joint spring (15) is greater than that of the male joint spring (6); 13) A second sealing ring (17) is provided inside; the first sealing ring (16) and the second sealing ring (17) are arranged in front and back; When the male connector (1) is inserted into the female connector (2), the female connector ejector rod (141) and the male connector ejector bar (501) first contact and push each other, and the male connector spring (6) is compressed until the male connector fluid channel (4) is opened, and then the insertion part (20) contacts with the insertion part (142) and pushes each other, the female connector spring (15) is compressed, and the second sealing ring (17) is sealed with the insertion part (20). , the female connector fluid channel (13) is opened. 2 . The fluid connector according to claim 1 , wherein the female connector ( 2 ) is provided with a connection between the male connector ( 1 ) and the female connector after the male connector ( 1 ) and the female connector ( 2 ) are plugged together. 3 . (2) Locked locking structure. 3 . The fluid connector according to claim 2 , wherein the locking structure comprises a button ( 25 ) provided on the female connector housing ( 12 ) and a button spring ( 26 ) push-fitted with the button ( 25 ). 4 . , the button (25) has an insertion channel (251) for the insertion part (20) to pass through, and the inner wall of the insertion channel (251) has a limit protrusion (27), and the insertion part (20) has a limit protrusion ( 27) The slot (28) to be inserted into; when the male connector (1) is inserted into the female connector (2), the insertion part (20) presses the limit protrusion (27) to overcome the elastic force of the button spring (26), Make the limiting protrusion (27) enter the card slot (28) to realize the locking of the male connector (1) and the female connector (2). 4 . The fluid connector according to claim 3 , wherein the limiting protrusion ( 27 ) is provided with a press fit with the insertion portion ( 20 ) to guide the button ( 25 ) in the direction of compressing the button spring ( 26 ). 5 . The moving guide slope. 5. The fluid connector according to claim 3, characterized in that, the female joint housing (12) has a stopper portion for blocking and mating with the button (25), so as to prevent the button (25) from interacting with the female joint housing (12) break away. 6. The fluid connector according to claim 5, wherein the female joint housing (12) comprises a female joint sealing seat (122), a female joint cover (121), a female joint valve seat (123), The female joint valve seat (123) is installed into the female joint sealing seat (122) from front to back, and the female joint sealing cover (121) and the female joint sealing seat (122) are threadedly connected to compress the female joint valve seat (123). The valve seat (123) is used for sealing fit with the female joint valve core (14), the button (25) is arranged on the female joint cover (121), and the female joint valve seat (123) and the female joint cover (121) are arranged between the valve seat (123) and the female joint cover (121). A clamp ring (124) extending into the insertion channel (251) to restrict the push button (25) from coming out of the female connector cover (121) is clamped, and the clamp ring (124) constitutes the blocking part. 7 . The fluid connector according to claim 6 , wherein the second sealing ring ( 17 ) is disposed in the sealing ring installation groove ( 19 ) enclosed by the retaining ring ( 124 ) and the female joint valve seat ( 123 ). 8 . )Inside. 8. The fluid connector according to any one of claims 1-7, wherein the male joint housing (3) comprises a male joint first part (301) and a male joint second part (302), the male joint first part (301) is screwed with the second part (302) of the male joint, and a male joint housing sealing ring (7) is arranged between the first part (301) of the male joint and the second part (302) of the male joint. 9. The fluid connector according to any one of claims 1-7, characterized in that the part of the male joint fluid channel (4) on the insertion part (20) is provided with a guide to the male joint ejector rod (501) Sliding fit guide structure. 10. The fluid connector according to claim 9, characterized in that the guiding structure comprises a guiding ring (11) fixed in the fluid channel (4) of the male joint, the male joint top rod (501) and the guiding ring (11) Guided slip fit.

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