CN220568183U - Hydrogenation port test fixture - Google Patents

Abstract

The utility model discloses a hydrogenation port testing tool, which comprises: the connector is characterized in that one end of the connector is connected with an air source, and the other end of the connector is formed into a plug-in end which is suitable for being plugged into a lumen of the hydrogenation port; the sleeve joint part is sleeved outside the joint and the hydrogenation port and used for axially limiting the joint and the hydrogenation port, and comprises at least two sleeve joint sub-parts, wherein the at least two sleeve joint sub-parts are suitable for being spliced into a ring shape along the circumferential direction; the limiting component is movably mounted on the connector, and the limiting component is sleeved on the outer side of the sleeve joint piece when moving to a locking position relative to the connector so as to fix at least two sleeve joint sub-parts relatively. From this, can improve the installation stability of joint and hydrogenation mouth, do benefit to the security that improves hydrogenation mouth test fixture, and the dismouting process is convenient, does benefit to the reduction in the operation degree of difficulty.

Description

Hydrogenation port test fixture

Technical Field

The utility model relates to the field of testing, in particular to a hydrogenation port testing tool.

Background

The hydrogenation port is used as a connecting piece between the hydrogen storage system and the hydrogenation station, and when the vehicle is hydrogenated, the hydrogenation gun of the hydrogenation station is connected with the hydrogenation port, and hydrogen enters the hydrogen storage tank through a pipeline at the rear end of the hydrogenation port. The hydrogenation port is an important part of the hydrogen storage system, has a severe requirement on the performance, and needs to be verified through a plurality of tests so as to meet the requirements of air tightness, temperature resistance, hydrogen compatibility and the like. In the related art, in order to realize the detection to the hydrogenation mouth, can adopt the test fixture to detect, the test fixture adopts the screw to fix hydrogenation mouth and test fixture generally, and installation stability is poor, and the installation degree of difficulty is higher, has the space of improvement.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model aims to provide the hydrogenation port testing tool which is high in installation stability, good in safety, convenient in disassembly and assembly process and low in operation difficulty.

According to the embodiment of the utility model, the hydrogenation port test tool comprises: the connector is characterized in that one end of the connector is connected with an air source, and the other end of the connector is formed into a plug-in end which is suitable for being plugged into a lumen of the hydrogenation port; the sleeve joint part is sleeved outside the joint and the hydrogenation port and used for axially limiting the joint and the hydrogenation port, and comprises at least two sleeve joint sub-parts, wherein the at least two sleeve joint sub-parts are suitable for being spliced into a ring shape along the circumferential direction; the limiting component is movably mounted on the connector, and the limiting component is sleeved on the outer side of the sleeve joint piece when moving to a locking position relative to the connector so as to fix at least two sleeve joint sub-parts relatively.

According to the hydrogenation port testing tool provided by the embodiment of the utility model, the sleeve joint piece is sleeved on the outer sides of the joint and the hydrogenation port, so that the sleeve joint piece can axially limit the joint and the hydrogenation port along the circumferential direction, the installation stability of the joint and the hydrogenation port can be improved, the safety of the hydrogenation port testing tool is improved, the disassembly and assembly process is convenient, and the operation difficulty is reduced.

According to the hydrogenation port test fixture of some embodiments of the present utility model, the socket joint member is provided with a first limiting protrusion and a second limiting protrusion protruding inwards in a radial direction, a first limiting groove is formed on the outer circumferential wall of the joint, the first limiting protrusion is used for being in limiting fit with the first limiting groove, and the second limiting protrusion is used for being in limiting fit with a second limiting groove arranged on the outer circumferential wall of the hydrogenation port.

According to the hydrogenation port test tool of some embodiments of the present utility model, the dimension of the first limiting protrusion protruding radially inward is greater than the dimension of the second limiting protrusion protruding radially inward.

According to some embodiments of the utility model, the second limiting protrusion forms a stop surface toward a side surface of the first limiting protrusion, and the stop surface is configured to extend obliquely inward in a radial direction away from the first limiting protrusion.

According to the hydrogenation port test tool of some embodiments of the present utility model, one of the two adjacent sleeve joint parts is provided with a first positioning part and the other sleeve joint part is provided with a second positioning part, and the first positioning part and the second positioning part are in positioning fit along the axial direction.

According to the hydrogenation port testing tool of some embodiments of the present utility model, the first positioning portion is configured as a positioning groove, and the second positioning portion is configured as a positioning protrusion, and the positioning protrusion is used for positioning and matching with the positioning groove.

According to some embodiments of the utility model, the limiting assembly comprises a limiting shell and a locking piece, the limiting shell is slidably sleeved on the joint, the limiting shell is suitable for being sleeved on the outer side of the sleeve joint when sliding to a locking position relative to the joint, and the locking piece is installed on the joint and used for fixing the limiting shell at the locking position.

According to some embodiments of the utility model, the limiting shell comprises a guiding section and a limiting section, the guiding section is configured to gradually reduce the inner diameter in a direction away from the hydrogenation port, the limiting section is connected to one end of the guiding section away from the hydrogenation port, and the limiting section is used for limiting cooperation with the sleeve part when the limiting shell moves to a locking position.

According to the hydrogenation port testing tool of some embodiments of the present utility model, the locking member is movably mounted at one end of the limiting shell, which is away from the hydrogenation port, and a first limiting surface and a second limiting surface are respectively formed on one side of the locking member and one side of the socket member, which are towards each other, and the limiting shell further includes a mating section, which is located at one end of the limiting shell, which is away from the hydrogenation port, and is configured to be sandwiched between the first limiting surface and the second limiting surface.

According to the hydrogenation port test tool provided by some embodiments of the utility model, the outer peripheral wall of the joint is provided with the locking protrusion, the cross section of the locking protrusion is polygonal, and the matching section is in circumferential limit matching with the locking protrusion when the limit assembly moves to the locking position relative to the joint.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic installation diagram of a hydrogenation port test fixture according to an embodiment of the utility model;

fig. 2 is an exploded view of a hydrogenation port testing tool according to an embodiment of the utility model.

Reference numerals:

the hydrogenation port test fixture 100, the hydrogenation port 200, the second limiting groove 201,

the connector 1, the plug-in end 11, the first limit groove 12, the connecting part 13, the hydrogen filling flow channel 14, the external thread 15, the locking protrusion 16, the sleeve joint 2, the sleeve joint sub-part 21, the first limit protrusion 22, the second limit protrusion 23, the stop surface 231, the second limit surface 24,

the sealing device comprises a limiting assembly 3, a limiting shell 31, a guiding section 311, a limiting section 312, a matching section 313, a locking piece 32, a first limiting surface 322 and a sealing piece 4.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Next, with reference to the accompanying drawings, a hydrogenation port test tool 100 according to an embodiment of the present utility model is described.

As shown in fig. 1-2, a hydrogenation port testing tool 100 according to an embodiment of the present utility model includes: the device comprises a connector 1, a sleeve connector 2 and a limiting assembly 3, wherein one end of the connector 1 is connected with an air source, the other end of the connector is formed into a plug end 11, and the plug end 11 is suitable for being plugged into a pipe cavity of a hydrogenation port 200; the sleeve joint 2 is sleeved outside the joint 1 and the hydrogenation port 200 and is used for axially limiting the joint 1 and the hydrogenation port 200, the sleeve joint 2 comprises at least two sleeve joint parts 21, and the at least two sleeve joint parts 21 are suitable for being spliced into a ring shape along the circumferential direction; the limiting component 3 is movably installed on the joint 1, and the limiting component 3 is sleeved on the outer side of the sleeve joint piece 2 when moving to a locking position relative to the joint 1 so as to relatively fix at least two sleeve joint sub-parts 21.

Therefore, the mounting stability of the joint 1 and the hydrogenation port 200 can be improved, the safety of the hydrogenation port testing tool 100 can be improved, the disassembly and assembly process is convenient, and the operation difficulty can be reduced.

For example, referring to fig. 1-2, the hydrogenation port testing tool 100 includes a connector 1, the connector 1 is configured in a tubular shape and is formed with a hydrogen injection flow channel 14, one end of the connector 1 is provided with a connection portion 13, the connection portion 13 is used for being connected with a gas source in a plugging manner, the other end of the connector 1 is formed into a plugging end 11, and the plugging end 11 is suitable for being plugged into a lumen of the hydrogenation port 200 to be connected with the hydrogenation port 200, so that the gas source can be communicated with the hydrogenation port 200 through the hydrogen injection flow channel 14.

The hydrogenation port testing tool 100 further comprises a sleeving piece 2 and a limiting assembly 3, the sleeving piece 2 is in a cylindrical shape, the sleeving piece 2 comprises at least two sleeving sub-parts 21, such as two, three or even more sleeving sub-parts 21 are in an arc-shaped structure, and the at least two sleeving sub-parts 21 are suitable for being spliced into a ring shape along the circumferential direction. Wherein, the sleeve joint 2 is used for sleeving the outside of the joint 1 and the hydrogenation port 200, so that the sleeve joint 2 can axially limit the joint 1 and the hydrogenation port 200 along the circumferential direction, so as to lock the joint 1 and the hydrogenation port 200 together, and prevent the joint 1 from separating from the hydrogenation port 200 along the axial direction in the hydrogen injection process.

Meanwhile, the limiting component 3 can be movably sleeved on the joint 1 along the axial direction, such as rotation, sliding and the like, so that the limiting component 3 can be switched between an unlocking position and a locking position. When spacing subassembly 3 is located the unblock position, spacing subassembly 3 staggers with cup joint 2, and after cup joint 2 installs, can drive spacing subassembly 3 relatively joint 1 activity to locking position, and spacing subassembly 3 can overlap and establish in the outside of cup joint 2, and spacing subassembly 3 can radially carry out spacingly to cup joint 21 for a plurality of cup joints 21 can be relatively fixed, can realize cup joint 2's stable installation. Thereby, the limit effect of the socket 2 can be improved, which is beneficial to improving the installation stability of the joint 1 and the hydrogenation port 200.

In a specific installation process, the plugging end 11 of the connector 1 is plugged into the hydrogenation port 200, and then the plurality of socket joint sub-parts 21 are spliced into a ring shape along the circumferential direction, so that the socket joint 2 can be sleeved outside the connector 1 and the hydrogenation port 200, and then the limiting component 3 is driven to move to a locking position, so that the limiting component 3 can fix the plurality of socket joint sub-parts 21, and the installation of the hydrogenation port test fixture 100 and the hydrogenation port 200 can be realized.

According to the hydrogenation port test tool 100 provided by the embodiment of the utility model, the socket joint 2 is sleeved on the outer sides of the joint 1 and the hydrogenation port 200, so that the socket joint 2 can axially limit the joint 1 and the hydrogenation port 200 along the circumferential direction, the installation stability of the joint 1 and the hydrogenation port 200 can be improved, the safety of the hydrogenation port test tool 100 can be improved, the disassembly and assembly process is convenient, and the operation difficulty can be reduced.

In some embodiments of the present utility model, the socket 2 is provided with a first limit protrusion 22 and a second limit protrusion 23 protruding radially inward, the first limit groove 12 is formed on the outer circumferential wall of the joint 1, the first limit protrusion 22 is used for being in limit fit with the first limit groove 12, and the second limit protrusion 23 is used for being in limit fit with a second limit groove 201 provided on the outer circumferential wall of the hydrogenation port 200.

For example, referring to fig. 1-2, the socket 2 is provided with a first limit protrusion 22 and a second limit protrusion 23 at two ends in the length direction, and the first limit protrusion 22 and the second limit protrusion 23 are protruded inward in the radial direction. Wherein, can be formed with annular first spacing groove 12 in the outer peripheral wall of joint 1 and the relative part of sleeve joint 2, first spacing groove 12 sets up with first spacing protruding 22 relatively, when sleeve joint 2 cover is established in the outside of joint 1, first spacing protruding 22 can stretch into in the first spacing groove 12 in order to with joint 1 spacing cooperation. Meanwhile, an annular second limiting groove 201 may be formed at a portion of the outer circumferential wall of the hydrogenation port 200 opposite to the socket member 2, the second limiting groove 201 is disposed opposite to the second limiting protrusion 23, and when the socket member 2 is sleeved on the outer side of the joint 1, the second limiting protrusion 23 may extend into the second limiting groove 201 to be in limiting fit with the hydrogenation port 200.

Through the arrangement, the limiting reliability of the sleeving part 2 can be improved, and the safety of the hydrogenation port testing tool 100 is improved.

In some embodiments of the present utility model, as shown in fig. 1, the first limit projection 22 may be provided to protrude radially inward by a larger dimension than the second limit projection 23. Through the arrangement, the contact size between the sleeve joint part 2 and the joint 1 can be increased, the installation stability of the sleeve joint part 2 and the joint 1 is improved, and the safety of the hydrogenation port test tool 100 is improved.

In some embodiments of the present utility model, the second limit projection 23 forms an abutment surface 231 toward the side of the first limit projection 22, and the abutment surface 231 is configured to extend obliquely inward in a radial direction away from the first limit projection 22. For example, referring to fig. 1, the second limiting protrusion 23 may be formed toward the side of the first limiting protrusion 22 to form a stop surface 231, the stop surface 231 being configured to extend obliquely inward in a radial direction away from the first limit, and correspondingly, an inner wall of the second limiting groove 201 opposite to the stop surface 231 may be configured as an inclined surface, so that the stop surface 231 may be attached to a side wall of the second limiting groove 201 to increase a contact area between the socket 2 and the outer circumferential wall of the hydrogenation port 200. Therefore, the limiting effect of the second limiting protrusion 23 on the hydrogenation port 200 can be improved, and the mounting stability between the hydrogenation port 200 and the hydrogenation port testing tool 100 can be improved.

In some embodiments of the present utility model, one of the two adjacent socket sub-portions 21 is provided with a first positioning portion and the other is provided with a second positioning portion, the first positioning portion being in positioning engagement with the second positioning portion in the axial direction.

For example, a plurality of socket parts 21 may be provided, and the plurality of socket parts 21 may be spliced into a ring shape in the circumferential direction. Wherein, a first positioning portion may be disposed at one of the two adjacent socket sub-portions 21, and a second positioning portion may be disposed at the other one, where the first positioning portion is configured to axially position and match with the second positioning portion, so as to implement positioning and matching of the two adjacent socket sub-portions 21 along the axial direction. Therefore, the assembling difficulty of the sleeving piece 2 can be reduced, the assembling precision of the sleeving piece 2 can be improved, and the reliability of the hydrogenation port testing tool 100 can be improved.

In some embodiments of the present utility model, the first positioning portion is configured as a positioning groove, and the second positioning portion is configured as a positioning protrusion for positioning engagement with the positioning groove. For example, the first positioning portion may be configured as a positioning groove, the positioning groove is disposed on one side of the socket portion 21 adjacent to the socket portion 21 in the circumferential direction, and the second positioning portion may be configured as a positioning protrusion disposed on the corresponding side of the socket portion 21 adjacent thereto, the positioning protrusion is disposed in a matching manner with the positioning groove, and the positioning protrusion may extend into the positioning groove to be in positioning engagement. Through the arrangement, the processing difficulty of the sleeving part 2 can be reduced, and the practicability of the hydrogenation port testing tool 100 is improved.

In some embodiments of the present utility model, the limiting assembly 3 includes a limiting shell 31 and a locking member 32, the limiting shell 31 is slidably sleeved on the joint 1, the limiting shell 31 is adapted to be sleeved on the outer side of the socket 2 when the opposite joint 1 slides to the locking position, and the locking member 32 is mounted on the joint 1 and is used for fixing the limiting shell 31 in the locking position.

For example, referring to fig. 1-2, the spacing assembly 3 includes a spacing housing 31 and a locking member 32, the spacing housing 31 is configured in a cylindrical shape, and the spacing housing 31 is slidably sleeved on the outer side of the joint 1, so that the spacing housing 31 can be switched between an unlocking position and a locking position relative to the joint 1. When the limiting shell 31 slides to the locking position, the limiting shell 31 may be sleeved on the outer side of the socket 2 to limit the socket portion 21. Meanwhile, a locking member 32 may be installed on the joint 1, the locking member 32 serving to lock the limiting case 31 when the limiting case 31 moves to the locking position. Therefore, the mounting stability of the limiting assembly 3 can be improved, and the reliability of the hydrogenation port testing tool 100 can be improved.

In some embodiments of the present utility model, the limiting shell 31 includes a guide section 311 and a limiting section 312, the guide section 311 is configured to gradually decrease in inner diameter in a direction away from the hydrogenation port 200, the limiting section 312 is connected to an end of the guide section 311 facing away from the hydrogenation port 200, and the limiting section 312 is configured to be in limiting engagement with the socket 2 when the limiting shell 31 moves to the locking position.

For example, referring to fig. 1, the stopper 31 includes a guide section 311 and a stopper section 312, the guide section 311 being configured such that the inner diameter gradually decreases in a direction away from the hydrogenation port 200, so that the inner peripheral wall of the guide section 311 may be formed as a guide surface for guiding engagement with the outer peripheral wall of the socket 2 to reduce resistance when the stopper 31 moves toward the lock position. The spacing section 312 is connected in the one end that the guide section 311 deviates from the hydrogenation mouth 200, and spacing section 312 matches the setting with cup joint piece 2, and when spacing shell 31 moved to the locking position, spacing section 312 is along radial relative in order to with cup joint sub-portion 21 spacing cooperation with cup joint sub-portion 21. Through the arrangement, the mounting difficulty of the limiting shell 31 can be reduced, and the operation hand feeling of the hydrogenation port testing tool 100 is improved.

In some embodiments of the present utility model, the locking member 32 is movably mounted at an end of the limiting shell 31 facing away from the hydrogenation port 200, and the first limiting surface 322 and the second limiting surface 24 are formed on the sides of the locking member 32 and the socket member 2 facing each other, respectively, the limiting shell 31 further includes a mating segment 313, the mating segment 313 is located at an end of the limiting shell 31 facing away from the hydrogenation port 200, and the mating segment 313 is configured to be sandwiched between the first limiting surface 322 and the second limiting surface 24.

For example, referring to fig. 1-2, a locking member 32 is movably mounted at an end of the limiting shell 31 facing away from the hydrogenation port 200, the locking member 32 is disposed opposite to the socket member 2, and a first limiting surface 322 and a second limiting surface 24 are formed on sides of the locking member 32 and the socket member 2 facing each other, respectively. The limiting shell 31 further comprises a matching section 313, the matching section 313 is located at one end of the limiting shell 31, which is away from the hydrogenation port 200, a matching protrusion is formed in the matching section 313, and two sides of the matching protrusion along the length direction are opposite to the first limiting surface 322 and the second limiting surface 24 respectively.

Specifically, after the socket 2 is installed, the limiting shell 31 can be driven to move towards the direction close to the hydrogenation port 200, so that one side of the mating protrusion can be abutted against the second limiting surface 24 to realize positioning, at this time, the limiting shell 31 is located at a locking position, the locking piece 32 can be driven to move towards the direction close to the hydrogenation port 200, and the locking piece 32 can be abutted against the other side of the mating protrusion through the first limiting surface 322, so that the mating segment 313 is clamped between the first limiting surface 322 and the second limiting surface 24, and thus the locking of the limiting shell 31 is completed. Therefore, the mounting stability of the limiting shell 31 can be improved, and the reliability of the hydrogenation port testing tool 100 can be improved.

Further, referring to fig. 1-2, an external thread 15 may be formed on the outer circumferential wall of the joint 1, and the locking member 32 may be configured as a locking nut for screw-coupling engagement with the external thread 15 of the joint 1, so that the locking nut may be movable in an axial direction with respect to the joint 1, and when the limit housing 31 is moved to the locking position, locking of the limit housing 31 may be achieved by driving the locking nut to a position against the limit housing 31. Thereby, the design rationality of the hydrogenation port test tool 100 is facilitated to be improved.

In some embodiments of the utility model, the outer peripheral wall of the joint 1 is formed with a locking protrusion 16, the locking protrusion 16 having a polygonal cross-sectional configuration, and the engagement section 313 is in circumferential limit engagement with the locking protrusion 16 when the limit assembly 3 is moved to the locking position relative to the joint 1.

For example, referring to fig. 1 to 2, a locking protrusion 16 may be formed on the outer circumferential wall of the joint 1, and the locking protrusion 16 may have a polygonal cross-sectional configuration such as a quadrangle, a pentagon, a hexagon, and the like. The fitting protrusion is correspondingly configured as a polygon, and when the limit housing 31 moves to the locking position with respect to the joint 1, the fitting section 313 may be opposite to the locking protrusion 16, at which time the fitting protrusion may be correspondingly supported on the outer peripheral wall of the locking protrusion 16 to achieve limit fit of the limit housing 31 and the locking protrusion 16 in the circumferential direction. Through the arrangement, relative rotation between the limiting shell 31 and the sleeve joint piece 2 can be avoided, and the installation stability of the hydrogenation port testing tool 100 is improved.

In some embodiments of the present utility model, a sealing member 4 may be installed at the joint 1, the sealing member 4 being configured as a sealing ring for being fitted over the outer circumferential wall of the joint 1 and abutting against the inner circumferential wall of the lumen of the hydrogenation port 200 to seal the gap between the joint 1 and the hydrogenation port 200. Thus, the occurrence of hydrogen leakage can be prevented, and the safety is improved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "dimension", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. Hydrogenation mouth test fixture (100), characterized in that includes:

the device comprises a connector (1), wherein one end of the connector (1) is connected with a gas source, the other end of the connector is formed into a plug-in end (11), and the plug-in end (11) is suitable for being plugged into a pipe cavity of a hydrogenation port (200);

the sleeve joint part (2) is sleeved outside the joint (1) and the hydrogenation port (200) and is used for axially limiting the joint (1) and the hydrogenation port (200), the sleeve joint part (2) comprises at least two sleeve joint sub-parts (21), and at least two sleeve joint sub-parts (21) are suitable for being spliced into a ring shape along the circumferential direction;

the limiting component (3), the limiting component (3) is movably arranged on the joint (1), and the limiting component (3) is sleeved on the outer side of the sleeve joint piece (2) when the limiting component (3) moves to a locking position relative to the joint (1) so as to fix at least two sleeve joint sub-parts (21) relatively.

2. The hydrogenation port testing tool (100) according to claim 1, wherein the socket joint (2) is provided with a first limit protrusion (22) and a second limit protrusion (23) protruding inwards in the radial direction, a first limit groove (12) is formed on the peripheral wall of the joint (1), the first limit protrusion (22) is used for being in limit fit with the first limit groove (12), and the second limit protrusion (23) is used for being in limit fit with a second limit groove (201) arranged on the peripheral wall of the hydrogenation port (200).

3. The hydrogenation port testing tool (100) according to claim 2, wherein the first limiting protrusion (22) protrudes radially inwards by a larger dimension than the second limiting protrusion (23).

4. The hydrogenation port testing tool (100) according to claim 2, characterized in that the second limiting protrusion (23) forms a stop surface (231) towards a side of the first limiting protrusion (22), the stop surface (231) being configured to extend obliquely radially inwards in a direction away from the first limiting protrusion (22).

5. The hydrogenation port testing tool (100) according to claim 1, wherein one of the two adjacent socket parts (21) is provided with a first positioning part and the other is provided with a second positioning part, and the first positioning part is axially positioned and matched with the second positioning part.

6. The hydrogenation port testing tool (100) according to claim 5, wherein the first positioning portion is configured as a positioning groove and the second positioning portion is configured as a positioning protrusion for positioning engagement with the positioning groove.

7. The hydrogenation port testing tool (100) according to any one of claims 1-6, wherein the limiting assembly (3) comprises a limiting shell (31) and a locking member (32), the limiting shell (31) is slidably sleeved on the joint (1), the limiting shell (31) is adapted to be sleeved outside the sleeve (2) when sliding to a locking position relative to the joint (1), and the locking member (32) is mounted on the joint (1) and is used for fixing the limiting shell (31) in the locking position.

8. The hydrogenation port testing tool (100) according to claim 7, wherein the limiting shell (31) comprises a guiding section (311) and a limiting section (312), the guiding section (311) is configured to gradually decrease in inner diameter in a direction away from the hydrogenation port (200), the limiting section (312) is connected to an end of the guiding section (311) facing away from the hydrogenation port (200), and the limiting section (312) is configured to be in limiting fit with the socket (2) when the limiting shell (31) moves to the locking position.

9. The hydrogenation port testing tool (100) according to claim 8, wherein the locking member (32) is movably mounted at an end of the limiting shell (31) facing away from the hydrogenation port (200), a first limiting surface (322) and a second limiting surface (24) are respectively formed at one side of the locking member (32) and the socket member (2) facing each other, the limiting shell (31) further comprises a mating section (313), the mating section (313) is located at an end of the limiting shell (31) facing away from the hydrogenation port (200), and the mating section (313) is configured to be sandwiched between the first limiting surface (322) and the second limiting surface (24).

10. The hydrogenation port testing tool (100) according to claim 9, wherein a locking protrusion (16) is formed on the outer peripheral wall of the joint (1), the cross section of the locking protrusion (16) is polygonal, and the mating section (313) is in circumferential limit mating with the locking protrusion (16) when the limit assembly (3) is moved to a locking position relative to the joint (1).