CN212305830U - High-voltage box with limiting function - Google Patents

Abstract

The utility model discloses a take limiting displacement's high-pressure box, it includes: the side plate of the box body is provided with a limiting mounting hole, and the limiting mounting hole comprises a first arc surface and a first limiting plane which are mutually connected; a glan head comprising a joint body; the joint main body comprises a second arc surface and a second limiting plane which are connected with each other; when the gland head is inserted into the limiting mounting hole to be mounted on the box body, the first arc surface is matched with the second arc surface, and the first limiting plane is used for being matched with the second limiting plane to limit the rotation of the gland head relative to the box body. According to the high-pressure box with the limiting function, the joint main body of the gland head is processed to form a second limiting plane, and meanwhile, the mounting hole for mounting the gland head on the box body is subjected to adaptive processing, so that the rotation prevention of the gland head after mounting is realized, and the mounting difficulty is reduced; and adopt this rotation-proof structure, need not to weld, and the box outward appearance is pleasing to the eye.

Description

High-voltage box with limiting function

Technical Field

The utility model relates to a high-voltage distribution equipment technical field especially relates to a take limiting displacement's high-voltage box.

Background

The gland head on the high-pressure box is used for fastening and sealing the cable so as to ensure that the cable is normally connected; in the prior art, a round hole is arranged on a side plate of a high-voltage box for mounting a Glan head; in order to prevent the flange head from rotating, a limiting plate is arranged on the outer wall of the box body to limit the flange head from rotating.

However, although the limiting plate can play a role in stopping rotation, the limiting plate needs to be welded to the box body, so that the welding is inconvenient, defective products are more, the weight of the high-voltage box is increased, the appearance of the box body is not smooth, and the attractiveness is affected.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the utility model provides a take limiting displacement's high-pressure box, it is through processing the joint main part of glan head, makes it have the spacing plane of second, carries out adaptability to the mounting hole that is used for installing the glan head on the box simultaneously and processes, realizes preventing changeing after the installation of glan head from this, can reduce the installation degree of difficulty.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a high-voltage box with a limiting function, comprising:

the side plate of the box body is provided with a limiting mounting hole, and the limiting mounting hole comprises a first arc surface and a first limiting plane which are mutually connected;

a glan head comprising a joint body; the joint main body comprises a second arc surface and a second limiting plane which are connected with each other; when the gland head is inserted into the limiting mounting hole to be mounted on the box body, the first arc surface is matched with the second arc surface, and the first limiting plane is used for being matched with the second limiting plane to limit the rotation of the gland head relative to the box body.

Preferably, the limiting mounting hole comprises two first arc surfaces which are oppositely arranged and also comprises two first limiting planes which are oppositely arranged; the joint main body comprises two second arc surfaces which are arranged oppositely and two second limiting planes which are arranged oppositely.

Preferably, the two second arc surfaces are two arc surfaces on the same generatrix, and the two second limiting planes are tangent planes on the generatrix of the second arc surfaces; the shape of the limiting mounting hole is matched with that of the joint main body.

Preferably, the connector main body comprises a connecting section and a convex ring of the connecting section, the second arc surface is arranged on the second limiting plane, a first waterproof ring is sleeved on the connecting section, one end of the first waterproof ring is abutted to the convex ring, the other end of the first waterproof ring is abutted to the side plate of the box body when the connecting section is inserted into the mounting hole.

Preferably, the waterproof box further comprises a fastening bolt, an upper cover, a second waterproof ring and a limiting piece, and the box body is provided with an upper end opening; the upper cover is connected with the box body through the fastening bolt so as to cover the upper end opening; the second waterproof ring is clamped between the box body and the upper cover; the second waterproof ring is provided with a plurality of placing holes, and when the upper cover is tightly connected with the box body, the second waterproof ring is compressed; the limiting piece is a rigid limiting piece and is arranged in the placing hole, the limiting end face of the limiting piece close to the upper cover side is lower than the opening of the placing hole close to the upper cover side, and the elastic deformation resistance of the limiting piece is larger than that of the second waterproof ring; when the upper cover abuts against the limiting part, the second waterproof ring is compressed to a limited compression state by the upper cover.

Preferably, the distance between the limiting end face and the upper hole opening is a compression distance, and the ratio of the compression distance to the axial thickness of the second waterproof ring is 0.48-0.58.

Preferably, the box body is provided with a plurality of first mounting holes, the second waterproof ring is provided with a plurality of second mounting holes, and the upper cover is provided with a plurality of third mounting holes; the second mounting hole is the placing hole, and the limiting piece is a limiting ring; the fastening bolt is used for simultaneously penetrating through the third mounting hole, the second mounting hole, the limiting ring and the first mounting hole so as to enable the upper cover to be fixedly mounted on the box body.

Preferably, the case includes a case body and a mounting portion connected to each other; the box body is provided with the upper end opening, the upper cover is used for being connected with the installation part, and the second waterproof ring is clamped between the upper cover and the installation part; the first mounting holes are formed in the mounting part; the high-pressure box also comprises a plurality of fastening nuts, and the fastening bolts penetrate through the first mounting holes and are in threaded connection with the fastening nuts; the end face of the fastening nut supports the limiting piece.

Preferably, the fastening nut is a special-shaped nut, the special-shaped nut includes a nut body and a protruding bearing portion, and the protruding bearing portion is used for being inserted into the first mounting hole to bear the limiting member.

Preferably, the fastening nut is a special-shaped nut, the special-shaped nut comprises a nut body and the limiting ring fixed on the nut body; when the end face of the nut body is abutted to the mounting portion, the limiting ring penetrates through the first mounting hole and is inserted into the second mounting hole.

The utility model has the advantages that: according to the high-pressure box with the limiting function, the joint main body of the gland head is processed to form a second limiting plane, and meanwhile, the mounting hole for mounting the gland head on the box body is subjected to adaptive processing, so that the rotation prevention of the gland head after mounting is realized, and the mounting difficulty can be reduced; and adopt this rotation-proof structure, need not to weld, can not increase the weight of high-pressure box, and the box body outward appearance is pleasing to the eye.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural diagram of a high voltage box according to an embodiment of the present invention;

fig. 2 is a schematic view of an angle structure of a glan head according to an embodiment of the present invention;

fig. 3 is a schematic structural view of another angle of the glan head according to the embodiment of the present invention;

fig. 4 is a second schematic structural diagram of the high voltage box according to the embodiment of the present invention;

fig. 5 is an assembly schematic diagram of the high-voltage box according to the embodiment of the present invention;

fig. 6 is a schematic diagram illustrating a limiting principle of the limiting element according to an embodiment of the present invention;

fig. 7 is a second schematic diagram illustrating a limiting principle of the limiting member according to the embodiment of the present invention;

fig. 8 is a schematic cross-sectional view of a high-voltage box according to an embodiment of the present invention;

FIG. 9 is an enlarged view of portion A of bitmap 8;

fig. 10 is a schematic structural view of a fastening nut according to an embodiment of the present invention;

in the figure: 10. a box body; 11. a tank body; 111. limiting the mounting hole; 1111. a first arc surface; 1112. a first limit plane; 12. an installation part; 121. a vertical mounting section; 122. a horizontal mounting section; 1221. a first mounting hole; 20. a second waterproof ring; 21. placing holes; 22. a second mounting hole; 30. an upper cover; 311. a third mounting hole; 40. a limiting member; 41. a limiting end face; 51. fastening a bolt; 52. fastening a nut; 60. a glan head; 61. a connector body; 621. a second arc surface; 622. a second limit plane; 63. a convex ring.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" are to be understood broadly, e.g. as a fixed connection, a detachable connection or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a take limiting displacement's high-pressure box, through processing the joint main part 61 to the glan head 60, make it have the spacing plane 622 of second, carry out adaptability to the mounting hole that is used for installing the glan head 60 on the box 10 simultaneously and process, realize preventing changeing after the installation of glan head 60 from this, can reduce the installation degree of difficulty.

As shown in fig. 1 to 3, in an embodiment of the high voltage box with a limiting function of the present invention, the high voltage box includes:

a side plate of the box body 10 is provided with a limiting mounting hole 111, and the limiting mounting hole 111 comprises a first arc surface 1111 and a first limiting plane 1112 which are connected with each other;

a glan head 60 including a joint body 61; the joint main body 61 comprises a second arc surface 621 and a second limiting plane 622 which are connected with each other; when the glan head 60 is inserted into the limiting mounting hole 111 to be mounted on the box body 10, the first circular arc surface 1111 is matched with the second circular arc surface 621, and the first limiting plane 1112 is used for being matched with the second limiting plane 622 to limit the glan head 60 to rotate relative to the box body 10.

Compared with the prior art, the side plate of the box body 10 is provided with a round hole for installing the gland head 60, and a limiting plate is arranged for limiting the rotation of the gland head 60, the utility model discloses a joint main body 61 of the gland head 60 is processed, so that the joint main body is provided with a second limiting plane 622, and meanwhile, the installation hole for installing the gland head 60 on the box body 10 is processed in an adaptive manner, so that the joint main body is provided with a first limiting plane 1112, and the rotation prevention after the installation of the gland head 60 is realized through the matching of the first limiting plane 1112 and the second limiting plane 622, so that the installation difficulty can be reduced; moreover, by adopting the anti-rotation structure, welding is not needed, the weight of the high-voltage box is not increased, and the appearance of the box body 10 is attractive.

Specifically, the glan head 60 is connected to the box 10 by providing a screw fitting inside the box 10, and the glan head 60 is mounted to the box 10 by screwing the joint body 61 to the screw fitting.

Further, the screw is a connecting nut, the joint body 61 is provided with an external thread, and after the joint body 61 is inserted into the limiting installation hole 111, the connecting nut is screwed, so that the flange head 60 can be fastened to the box body 10.

Further, as shown in fig. 1 to 3, in order to improve the limiting effect, in another embodiment of the high-voltage box with a limiting function of the present invention, the limiting mounting hole 111 includes two first arc surfaces 1111 disposed oppositely, and further includes two first limiting planes 1112 disposed oppositely; the joint main body 61 includes two second arc surfaces 621 which are oppositely arranged, and further includes two second limiting planes 622 which are oppositely arranged.

Further, as shown in fig. 1 to 3, for convenience of processing, the two second arc surfaces 621 are two arc surfaces on the same generatrix, and the two second limiting planes 622 are tangent planes on the generatrix of the second arc surfaces 621; the shape of the limit mounting hole 111 matches the joint main body 61.

Specifically, when the joint main body 61 of the glan head 60 is machined, two symmetrical tangent planes can be directly cut on the joint main body 61 of the circular glan head 60 to form two second arc surfaces 621 and two second limiting planes 622, so that the machining of the limiting planes of the glan head 60 is more convenient and faster compared with the installation of a limiting plate on the box body 10; in addition, the limit mounting holes 111 are machined and manufactured on the side plates of the box body 10, so that the cost is low and the realization is convenient; by adopting the anti-rotation structure, welding is not needed, the weight of the high-voltage box is not increased, and the appearance of the box body 10 is attractive

Further, as shown in fig. 2 and 3, in order to improve the installation speed and enhance the waterproof effect, in another embodiment of the high-pressure box with a limiting function of the present invention, the joint main body 61 includes a connecting section and a convex ring 63 protruding from the connecting section, the second arc surface 621 and the second limiting plane 622 are disposed on the connecting section, a first waterproof ring is sleeved on the connecting section, when the connecting section is inserted into the installation hole, one end of the first waterproof ring abuts against the convex ring 63, and the other end abuts against the side plate of the box body 10; the arrangement of the convex ring 63 is beneficial to realizing the installation and positioning of the Glan heads 60, and the uniform insertion depth of a plurality of Glan heads 60 can be realized, so that the installation speed can be improved; through setting up first waterproof circle, can improve water-proof effects.

The process is right the joint main part 61 of glan head 60, it is right the structure of spacing mounting hole 111 of the curb plate of box 10 improves, through contrast test, 320 sets of high-pressure box required time that has novel glan head 60 limit structure of installation, it is the same with the time that 400 original high-pressure boxes of installation cover need, high-pressure box after improving is carried out to glan head 60 limit structure, when assembling glan head 60, it is more convenient, the installation effectiveness is higher, and the installation yields improves, greatly reduced manufacturing cost, although glan head 60 processing, box 10 curb plate spacing mounting hole 111 processing needs to increase the processing cost, but the overall cost of high-pressure box manufacturing is reduced.

As shown in fig. 4-10, in another embodiment of the high-voltage box with a limiting function of the present invention, an upper end opening is provided on the box body 10 of the high-voltage box, and the high-voltage box further includes:

a fastening bolt 51;

an upper cover 30 for being connected to the case 10 by the fastening bolt 51 to cover the upper end opening;

a second waterproof ring 20 interposed between the case 10 and the upper cover 30; the second waterproof ring 20 is provided with a plurality of placing holes 21, the fastening bolts 51 are tightened to move the upper cover 30 in a direction close to the box body 10, and in the process of fastening and connecting the upper cover 30 and the box body 10, the second waterproof ring 20 is compressed, so that the waterproof and dustproof effects at the connection position of the upper cover 30 and the box body 10 are realized; the second waterproof ring 20 is an elastic second waterproof ring 20;

a stopper 40 provided in the placement hole 21, a stopper end surface 41 of the stopper 40 on the side close to the upper cover 30 being lower than an upper hole opening of the placement hole 21 on the side close to the upper cover 30, and an elastic deformation resistance of the stopper 40 being greater than that of the second waterproof ring 20; when the upper cover 30 abuts against the limiting member 40, the second waterproof ring 20 is compressed to a limited compression state by the upper cover 30.

Specifically, as shown in fig. 6, since the limiting member 40 is close to the limiting end surface 41 on the upper cover 30 side, and is lower than the upper hole opening of the placing hole 21 close to the upper cover 30 side, the distance between the limiting end surface 41 and the upper hole opening is a compression distance, so that a certain space can be provided, so that the second waterproof ring 20 can be compressed by the upper cover 30, so as to achieve the waterproof and dustproof effects at the connection position of the upper cover 30 and the box body 10; meanwhile, because the elastic deformation resistance of the limiting member 40 is greater than that of the second waterproof ring 20, as shown in fig. 7, when the second waterproof ring 20 is compressed downwards to the position where the upper cover 30 abuts against the limiting end portion of the limiting member 40, the limiting member 40 feeds back the compression in-place information to the operator through a reaction force, and the operator stops further compressing the second waterproof ring 20, so that the second waterproof ring 20 can be protected, and deformation and cracking caused by excessive extrusion are avoided.

Further, the limiting member 40 is a rigid limiting member 40, so that in the process of mounting the upper cover 30, as long as the upper cover 30 abuts against the limiting end surface 41 of the limiting member 40, the upper cover cannot move in the direction approaching the box body 10, the thickness of the extruded second waterproof ring 20 is not lower than the thickness of the limiting member 40 in the second waterproof ring 20, and the second waterproof ring 20 is protected more reliably. Meanwhile, by using the rigid limiting member 40, the in-place information fed back by the limiting member 40 is more reliable, and the installation speed of the upper cover 30 can be increased.

Further, the second waterproof ring 20 is a silica gel second waterproof ring 20 or a silica gel foam second waterproof ring 20.

Specifically, a person skilled in the art may select the limiting member 40 with a suitable thickness according to the thickness of the second waterproof ring 20, the material of the second waterproof ring 20, and the waterproof requirement, and set a suitable compression distance, so that when the second waterproof ring 20 is in the limited compression state, the optimal waterproof and dustproof effects are achieved.

The utility model provides a take limiting displacement's high-pressure box, it places hole 21 through setting up on the waterproof circle 20 of second, and increase in the waterproof circle 20 of second and set up locating part 40, so, can solve upper cover 30 with the sealing connection's of box 10 in-process, the waterproof circle 20 of second is by the problem of overstocking inefficacy, can protect the waterproof circle 20 of second to improve the waterproof dirt-proof reliability of junction, thereby guarantee the sealing reliability of high-pressure box. Furthermore, the utility model discloses "set up on the waterproof circle of second 20 and place hole 21 increase in the waterproof circle of second 20 and set up this required improvement cost of improvement of locating part 40" less, and do not occupy unnecessary installation space.

The utility model discloses a take limiting displacement's high-pressure box, through the improvement of the first 60 limit structure of glan and through increase in the waterproof circle of second 20 and set up locating part 40, through two sets of spacing subassemblies, can improve greatly the assembly speed and the assembly reliability of high-pressure box.

Further, the ratio of the compression space to the axial thickness of the second waterproof ring 20 is 0.35 to 0.7.

Further, in order to enable the second waterproof ring 20 to have an optimal waterproof and dustproof effect when in the limited compression state, the ratio of the compression distance to the axial thickness of the second waterproof ring 20 is 0.48 to 0.58.

Specifically, as shown in fig. 4 to 10, the second waterproof ring 20 adopted in this embodiment is a silica gel foam second waterproof ring 20, and a ratio of a compression distance between the limiting end surface 41 and the upper hole opening to an axis thickness of the second waterproof ring 20 is 0.53, so that after the silica gel foam second waterproof ring 20 is compressed by 53%, a limited compression state is achieved, and an excellent waterproof and dustproof effect can be obtained.

Further, as shown in fig. 4-10, in order to reduce the manufacturing cost, in another embodiment of the high-voltage box of the present invention, a plurality of first mounting holes 1221 are disposed on the box body 10, a plurality of second mounting holes 22 are disposed on the second waterproof ring 20, and a plurality of third mounting holes 311 are disposed on the upper cover 30; the second mounting hole 22 is the placing hole 21, the limiting member 40 is a limiting ring, and the inner diameter of the limiting ring is larger than the outer diameter of the fastening bolt 51; the fastening bolt 51 is used for simultaneously passing through the third mounting hole 311, the second mounting hole 22, the limiting ring and the first mounting hole 1221 to fasten the upper cover 30 to the box body 10; in this way, the second mounting hole 22 is used as the placing hole 21, so that the connection between the upper cover 30, the second waterproof ring 20 and the box body 10 is not affected, the limiting member 40 can be arranged in the second waterproof ring 20, and the manufacturing cost is saved.

In other embodiments, the second mounting hole 22 is provided separately from the placement hole 21.

Further, the case 10 includes a case body 11 and a mounting portion 12 connected to each other; the box body 11 has the upper end opening, the upper cover 30 is used for connecting with the installation part 12, and the second waterproof ring 20 is clamped between the upper cover 30 and the installation part 12; the mounting part 12 comprises a vertical mounting part 121 and a horizontal mounting part 122, the vertical mounting part 121 is connected with the box body 11, one end of the horizontal mounting part 122 is connected with the horizontal mounting part 122, and the other end of the horizontal mounting part extends in the direction far away from the upper end opening; the first mounting holes 1221 are disposed in the horizontal mounting portion 122; so set up, avoid the tip of fastening bolt 51 stretches into in the inner space of case body 11, avoid partial moisture by first mounting hole 1221 with the clearance between the fastening bolt 51 gets into in the inner space of case body 11.

Further, in order to facilitate the fastening connection of the upper cover 30, the second waterproof ring 20 and the box body 10 by fastening bolts 51, the high-pressure box further comprises a plurality of fastening nuts 52, and the fastening bolts 51 are screwed with the fastening nuts 52 after penetrating through the first mounting holes 1221; with this arrangement, it is not necessary to provide an internal thread in the first mounting hole 1221 of the horizontal mounting portion 122, and it is not necessary to increase the thickness of the horizontal mounting portion 122.

Further, the end face of the fastening nut 52 supports the stopper 40; so set up, the bottom of locating part 40 is born by rigid structure, can improve the limiting displacement's of locating part 40 reliability.

Further, for the convenience of installation, the fastening nut 52 is a special-shaped nut, and the special-shaped nut includes a nut body and a protruding bearing portion, and the protruding bearing portion is used for being inserted into the first installation hole 1221 to bear the limiting member 40.

Further, for convenience of installation, the fastening nut 52 is a special-shaped nut, the special-shaped nut includes a nut body, and further includes the limiting ring fixed to the nut body, that is, the limiting member 40 is a limiting ring on the special-shaped nut; when the end face of the nut body abuts against the mounting portion 12, the limiting ring penetrates through the first mounting hole 1221 and is inserted into the second mounting hole 22, and thus the step of placing the limiting part 40 and the step of mounting the fastening nut 52 can be combined into one operation.

Specifically, an internal thread is arranged in the limiting ring.

Further, in order to facilitate the butt joint of the fastening bolt 51 and the fastening nut 52, the special-shaped fastening nut 52 further comprises a clamping ring, the clamping ring is located between the nut body and the limiting ring, the clamping ring is provided with a plurality of clamping teeth, so that when the limiting ring is inserted into the second mounting hole 22, the clamping ring is located in the first mounting hole 1221, and the clamping teeth are abutted against the inner wall of the first mounting hole 1221.

In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are used in a descriptive sense and with reference to the illustrated orientation or positional relationship, and are used for convenience in description and simplicity in operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. A take limiting displacement's high-pressure box which characterized in that includes:

the side plate of the box body (10) is provided with a limiting mounting hole (111), and the limiting mounting hole (111) comprises a first arc surface (1111) and a first limiting plane (1112) which are connected with each other;

a glan head (60) comprising a joint body (61); the joint main body (61) comprises a second arc surface (621) and a second limiting plane (622) which are connected with each other; when the Glan head (60) is inserted into the limiting mounting hole (111) to be mounted on the box body (10), the first circular arc surface (1111) is matched with the second circular arc surface (621), and the first limiting plane (1112) is used for being matched with the second limiting plane (622) to limit the Glan head (60) to rotate relative to the box body (10).

2. The high-pressure box with the limiting effect according to claim 1, wherein the limiting installation hole (111) comprises two first arc surfaces (1111) which are oppositely arranged and further comprises two first limiting planes (1112) which are oppositely arranged; the joint main body (61) comprises two second arc surfaces (621) which are arranged oppositely, and further comprises two second limiting planes (622) which are arranged oppositely.

3. The high-pressure box with the limiting effect according to claim 2, wherein the two second circular arc surfaces (621) are two circular arc surfaces on the same generatrix, and the two second limiting planes (622) are tangent planes on the generatrix of the second circular arc surfaces (621); the limiting installation hole (111) is matched with the joint main body (61) in shape.

4. The high-pressure box with the limiting effect according to claim 1, wherein the joint main body (61) comprises a connecting section and a convex ring (63) protruding relative to the connecting section, the second arc surface (621) and the second limiting plane (622) are arranged on the connecting section, a first waterproof ring is sleeved on the connecting section, when the connecting section is inserted into the mounting hole, one end of the first waterproof ring abuts against the convex ring (63), and the other end of the first waterproof ring abuts against a side plate of the box body (10).

5. The high-pressure tank with a limiting effect according to any one of claims 1 to 4, further comprising a fastening bolt (51), an upper cover (30), a second waterproof ring (20) and a limiting member (40), wherein the tank body (10) has an upper end opening; the upper cover (30) is used for being connected with the box body (10) through the fastening bolt (51) so as to cover the upper end opening; the second waterproof ring (20) is clamped between the box body (10) and the upper cover (30); the second waterproof ring (20) is provided with a plurality of placing holes (21), and when the upper cover (30) is tightly connected with the box body (10), the second waterproof ring (20) is compressed; the limiting piece (40) is a rigid limiting piece (40), the limiting piece (40) is arranged in the placing hole (21), a limiting end face (41) of the limiting piece (40) close to the upper cover (30) is lower than an upper hole opening of the placing hole (21) close to the upper cover (30), and the elastic deformation resistance of the limiting piece (40) is larger than that of the second waterproof ring (20); when the upper cover (30) abuts against the limiting piece (40), the second waterproof ring (20) is compressed to a limited compression state by the upper cover (30).

6. The high-pressure cartridge with a limiting effect according to claim 5, characterized in that the spacing between the limiting end face (41) and the upper hole opening is a compression spacing, and the ratio of the compression spacing to the axial thickness of the second waterproof ring (20) is 0.48 to 0.58.

7. The high-pressure box with the limiting function according to claim 5, wherein a plurality of first mounting holes (1221) are formed in the box body (10), a plurality of second mounting holes (22) are formed in the second waterproof ring (20), and a plurality of third mounting holes (311) are formed in the upper cover (30); the second mounting hole (22) is the placing hole (21), and the limiting piece (40) is a limiting ring; the fastening bolt (51) is used for simultaneously passing through the third mounting hole (311), the second mounting hole (22), the limiting ring and the first mounting hole (1221) so as to enable the upper cover (30) to be fastened and mounted on the box body (10).

8. The high-pressure cartridge with a limiting effect according to claim 7, characterized in that the cartridge body (10) comprises a cartridge body (11) and a mounting portion (12) which are connected to each other; the box body (11) is provided with the upper end opening, the upper cover (30) is used for being connected with the installation part (12), and the second waterproof ring (20) is clamped between the upper cover (30) and the installation part (12); the first mounting holes (1221) are arranged in the mounting part (12); the high-pressure box also comprises a plurality of fastening nuts (52), and the fastening bolts (51) penetrate through the first mounting holes (1221) and then are in threaded connection with the fastening nuts (52); the end face of the fastening nut (52) supports the limiting piece (40).

9. The high-pressure cartridge with a limiting effect according to claim 8, wherein the fastening nut (52) is a profile nut comprising a nut body and a protruding bearing portion for inserting into the first mounting hole (1221) to bear the limiting member (40).

10. The high-pressure cartridge with a limiting effect according to claim 8, wherein the fastening nut (52) is a profiled nut comprising a nut body and further comprising the limiting ring fixed to the nut body; when the end face of the nut body is abutted to the mounting portion (12), the limiting ring penetrates through the first mounting hole (1221) and is inserted into the second mounting hole (22).

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