CN114655592A - Connecting device for IV-type hydrogen storage bottle and container - Google Patents

Abstract

The invention discloses a connection device of a type IV hydrogen storage bottle and a container, comprising a ball ring, a ball hoop, a support plate and the like. The ball ring is provided with a threaded inner hole of the ball ring and is connected with the threaded section of the neck of the BOSS structure; the outer surface of the ball ring is provided with a spherical groove, and a damping gasket is installed in the spherical groove; the outer side of the ball ring is the ball ring A and the ball ring B , there are spherical holes in the middle of the ball hoop A and the ball hoop B, and a ball hoop key is arranged on the spherical hole, and the ball hoop key is in contact with the damping gasket and cooperates with the spherical groove; There is a circular inner hole of the support plate in the middle and is matched with the smooth section of the neck of the BOSS structure. The diameter of the inner hole of the support plate is smaller than the outer diameter of the shoulder of the BOSS structure to prevent the axial movement of the hydrogen storage bottle. The invention realizes the buffering of the circumferential rotation of the hydrogen storage bottle through the cooperation of the spherical groove, the damping gasket and the ball hoop key, and the elastic deformation of the damping gasket, which can reduce the torque borne by the connection part between the BOSS structure and the bottle body, and improve the Safety and service life of type Ⅳ hydrogen storage bottle.

Description

A connection device of type IV hydrogen storage bottle and container

technical field

The invention relates to the field of normal temperature compressed gas storage and transportation equipment, in particular to a connection device of an IV type hydrogen storage bottle and a container.

Background technique

As a renewable and clean energy, hydrogen energy is favored internationally. my country is also continuously building and developing the hydrogen energy industry, one of which is the short- and medium-distance transportation of compressed hydrogen. In the transportation of normal temperature and high pressure hydrogen, the type IV hydrogen storage tube bundle container road transportation has the advantages of large capacity, high efficiency, flexibility and speed, and is an important way of hydrogen transportation.

In the existing hydrogen storage tube bundle containers, the hydrogen storage bottle and the container are completely fixed by the internal thread of the flange, the external thread of the BOSS structure and the bolt assembly, and the relative movement between the two is prohibited. This kind of fixed connection completely transfers the load and deformation generated under the conditions of thermal expansion and cold contraction, road transportation, etc. to the bottle mouth, so the strength requirements of the BOSS structure and the connection part of the bottle body are relatively high. For the type IV hydrogen storage bottle, because its inner tank is plastic, its connection with the BOSS structure is not as firm and reliable as the connection with the metal inner tank, and it is difficult to meet the strength requirements. In addition, under the influence of production process, material stiffness and other factors, the mass eccentricity and flexural deformation of the type IV hydrogen storage bottle are larger, and it is easier to rotate during road transportation, which further reduces the reliability of the BOSS structure and the connection part of the bottle body. . It can be seen that under the existing fixed connection form, the type IV hydrogen storage bottle is easily damaged during service, resulting in failure of the connection, thereby reducing the service life and even causing safety accidents.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a connection device of type IV hydrogen storage bottle and container, which can buffer the circumferential rotation of the hydrogen storage bottle and reduce the load on the connecting part, so as to solve the above-mentioned deficiencies of the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a connection device for a type IV hydrogen storage bottle and a container, comprising a ball ring, the ball ring is provided with a threaded inner hole of the ball ring, and the inner hole of the ball ring is connected with the inner hole of the ball ring. The neck threaded section of the BOSS structure is connected; the outer surface of the ball ring is provided with a spherical groove, and a damping gasket is installed in the spherical groove; the outer side of the ball ring is a ball hoop A and a ball hoop B, A ball hoop key is provided, the ball hoop key is in contact with the damping gasket and matched with the spherical groove, and the outer plane of the ball hoop B is connected with the support plate; the support plate is provided with a circular support plate inner hole, The inner hole of the support plate is matched with the smooth section of the neck of the BOSS structure; the support plate is also provided with a through hole for bolt connection with the container end plate.

Preferably, the outer surface of the ball ring is a spherical surface, and a circular inner hole of the ball ring is provided in the middle, the inner hole of the ball ring is provided with threads, the two sides of the ball ring are parallel planes, and are perpendicular to the axis of the inner hole of the ball ring The outer surface of the ball ring is provided with a plurality of spherical grooves evenly distributed around the circumference, the two inner sides of the spherical groove are respectively equipped with damping gaskets, and the two ends of the spherical groove are open but provided with groove end baffles to facilitate the installation of balls. Hoop the key and prevent the damping gasket from falling; the spherical groove can also be used as the clamping groove of the wrench, which is convenient for the assembly and disassembly of the threaded connection.

Preferably, the BOSS structure is axially divided into a shoulder and a neck, the neck is divided into two sections, one section is a neck thread section with threads on the outer surface, and the other section is a neck section without threads on the outer surface Smooth segment, the diameter of the neck thread segment and the neck smooth segment are equal; the neck thread segment is threadedly connected to the inner hole of the ball ring; on the connecting surface of the neck and the shoulder, the outer diameter of the shoulder is larger than the outer diameter of the neck , forming a shoulder.

Preferably, the outer contours of the ball hoop A and the ball hoop B are cylindrical, and a spherical hole corresponding to the outer surface of the ball hoop is provided in the middle, and the spherical holes of the ball hoop A and the ball hoop B are mirror-symmetrical; A ball hoop key corresponding to the spherical groove, the ball hoop key is in contact with the damping gasket and is matched with the spherical groove; the ball hoop A and the ball hoop B are provided with a plurality of stepped through holes with uniform circumferences along the axis direction , and the ball hoop B is provided with a threaded blind hole corresponding to the stepped through hole of the ball hoop A, so as to realize the screw connection of the ball hoop A and the ball hoop B, and limit the ball ring in the ball hoop A and the ball hoop B.

Preferably, the outer contour of the support plate is cylindrical, and there are threaded blind holes corresponding to the stepped through holes of the ball hoop B along the axial direction, so as to realize the screw connection of the ball hoop B and the support plate; the support plate is provided with A circular inner hole of the support plate, the inner hole of the support plate is matched with the smooth section of the neck of the BOSS structure, and the diameter of the inner hole of the support plate is smaller than the outer diameter of the shoulder, so as to block the axial movement of the BOSS structure; support The plate is also provided with a plurality of through holes evenly distributed around the circumference, which are used for bolt connection with the container end plate.

Preferably, the damping gasket is made of materials with high wear resistance and high elasticity, such as polyurethane rubber and polyester rubber, and has good impact resistance and shock absorption and buffering properties at the same time. The damping gasket is installed in the spherical groove, located in the middle of the spherical groove and the ball hoop key. When the hydrogen storage bottle rotates circumferentially, the ball ring drives the damping gasket to squeeze the ball hoop key, the damping gasket is deformed and the ball hoop key remains The original state allows and limits the circumferential rotation of the BOSS structure at a small angle, and absorbs the energy generated by the rotation through the damping gasket to relieve the torque on the connection between the BOSS structure and the bottle body. As mentioned above, the outer contours of the ball hoop A, the ball hoop B and the support plate can also be set as a rectangular parallelepiped.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The present invention realizes the buffering of the circumferential rotation of the hydrogen storage bottle through the keyway cooperation of the ball ring, the damping gasket, the ball hoop and the elastic deformation of the damping gasket, and can effectively reduce the pressure on the connection part of the BOSS structure and the bottle body. torque to improve the safety of type IV hydrogen storage bottle;

(2) The present invention reduces the torque on the threaded connection of the ball ring and the BOSS structure by allowing the circumferential rotation of the ball ring and the BOSS structure at a slight angle, thereby slowing down the wear and failure of the thread and effectively improving its service life;

(3) The present invention can prevent the axial movement of the hydrogen storage cylinder through the design that the inner diameter of the support plate is smaller than the shoulder of the BOSS structure, thereby effectively improving the reliability of the connection between the hydrogen storage cylinder and the container.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

2 is a schematic diagram of the internal connection of the overall structure of the present invention;

Fig. 3 is the schematic diagram of the ball ring of the present invention;

4 is a schematic diagram of the cooperation between the ball ring and the damping gasket of the present invention;

Fig. 5 is the BOSS structure schematic diagram of the present invention;

Fig. 6 is the schematic diagram of spherical ring and BOSS structure coordination of the present invention;

Fig. 7 is the schematic diagram of ball hoop A of the present invention;

Fig. 8 is the schematic diagram of ball hoop B of the present invention;

Fig. 9 is the screw connection schematic diagram of the ball hoop A and the ball hoop B of the present invention;

10 is a schematic diagram of the internal connection of the ball hoop, the ball ring and the BOSS structure of the present invention;

11 is a schematic diagram of the spherical groove, damping gasket and ball hoop key of the present invention;

12 is a schematic diagram of a support plate of the present invention;

13 is a schematic diagram of the screw connection of the ball hoop B and the support plate of the present invention;

14 is a schematic diagram of the support plate and the BOSS structure of the present invention;

In the figure: 1, ball ring; 101, inner hole of ball ring; 102, spherical groove; 103, groove end baffle; 2, BOSS structure; 201, neck; 202, shoulder; 203, neck thread segment; 204 , neck smooth section; 205, shoulder; 3, ball hoop A; 301, spherical hole A; 302, ball hoop key A; 303, stepped through hole A; 4, ball hoop B; 401, spherical hole B; 402, ball hoop key B; 403, stepped through hole B; 404, ball hoop thread blind hole; 41, ball hoop socket head cap screw; 5, damping gasket; 6, support plate; 601, support plate inner hole; 602 , threaded blind holes for the support plate; 603, through holes; 61, hexagon socket screws for the support plate.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the specific embodiments described below are intended to explain the present invention, but are not intended to limit the present invention.

Example 1

As shown in Fig. 1-Fig. 14, the present invention provides a connection device of a type IV hydrogen storage bottle and a container, including a ball ring 1, the ball ring 1 is provided with a threaded inner hole 101 of the ball ring, the ball The inner hole 101 of the ring is connected with the neck threaded section 203 of the BOSS structure 2; the outer surface of the ball ring 1 is provided with a spherical groove 102, and the damping gasket 5 is installed in the spherical groove 102; The ball hoop B 4, the ball hoop A 3 and the ball hoop B 4 are respectively provided with a ball hoop key A 302, a ball hoop key B 402, the ball hoop key A 302, the ball hoop key B 402 and the damping pad The sheet 5 is in contact with and cooperates with the spherical groove 102, and the outer plane of the ball hoop B 4 is connected with the support plate 6; The neck smooth section 204 of 2 is matched, and the support plate 6 is provided with a support plate through hole 603 for bolt connection with the container end plate.

As shown in Figures 1-4, the outer surface of the ball ring 1 is a spherical surface, and a circular inner hole 101 is provided in the middle. The inner hole 101 of the ball ring is provided with threads, and both sides of the ball ring are parallel planes. And it is perpendicular to the axis of the inner hole 101 of the ball ring; the outer surface of the ball ring is provided with a plurality of spherical grooves 102 evenly distributed around the circumference, the two inner sides of the spherical groove 102 are respectively installed with damping gaskets 5, and both ends of the spherical groove 102 are open However, a groove end baffle 103 is provided to facilitate the installation of the ball hoop key A 302 and the ball hoop key B 402 and prevent the damping washer 5 from falling; .

As shown in Figures 5 and 6, the BOSS structure 2 is axially divided into a neck 201 and a shoulder 202. The neck 201 is divided into two sections, one is the neck thread section 203 with threads on the outer surface, and the other One section is the neck smooth section 204 with no thread on the outer surface, the neck screw section 203 and the neck smooth section 204 have the same diameter; the neck screw section 203 is threadedly connected with the inner hole 101 of the ball ring; between the neck 201 and the neck On the connecting surface of the shoulder portion 202 , the outer diameter of the shoulder portion 202 is larger than the outer diameter of the neck portion 201 , forming a shoulder 205 .

As shown in Figures 7-11, the outer contours of the ball hoop A 3 and the ball hoop B 4 are both cylindrical, and there are spherical holes A 301 and B 401 corresponding to the outer surface of the ball ring 1 in the middle. The spherical hole A 301 of A3 and the spherical hole B401 of the spherical ferrule B4 are mirror-symmetrical; the spherical hole A 301 and the spherical hole B 401 are respectively provided with a spherical ferrule key A 302 and a spherical ferrule key B 402 corresponding to the spherical groove 102 , the ball hoop key A 302 and the ball hoop key B 402 are in contact with the damping gasket 5 and cooperate with the spherical groove 102; the ball hoop A 3 and the ball hoop B 4 are respectively provided with a plurality of circumferentially uniformly distributed The stepped through hole A 303 and the stepped through hole B 403 are provided, and the ball ferrule B 4 is provided with a ball ferrule B threaded blind hole 404 corresponding to the stepped through hole A 303 in the ball ferrule A 3, so as to pass the ball ferrule socket head cap screw 41 realizes the screw connection of the ball ferrule A 3 and the ball ferrule B 4, and confines the ball ring 1 in the ball ferrule A 3 and the ball ferrule B 4.

The damping gasket 5 is made of polyurethane rubber, polyester rubber and other materials with high wear resistance and high elasticity, and has good impact resistance and shock absorption and buffering properties at the same time. As shown in FIG. 10 and FIG. 11 , two damping washers 5 are installed in each spherical groove 102 . The damping washers 5 are located in the middle of the spherical groove 102 and the ball hoops key A 302 and the ball hoope key B 402 . The damping washer 5 The left and right ends are in contact with the groove end baffle 103, and the front and rear main surfaces of the damping gasket 5 are respectively in contact with the spherical groove 102 and the ball hoop key A 302 and the ball hoop key B 402; when the hydrogen storage bottle rotates in the circumferential direction, the ball ring 1 Drive the damping gasket 5 to squeeze the ball hoop key A 302 and the ball hoop key B 402, the damping gasket 5 is deformed while the ball hoop key A 302 and the ball hoop key B 402 remain in the original state, thereby allowing and limiting the BOSS structure 2 The small angle Circumferential rotation, and absorb the energy generated by the rotation through the damping gasket 5 to relieve the torque borne by the connection between the BOSS structure 2 and the bottle body; as the hydrogen storage bottle is gradually reset, the torque gradually decreases, and the damping gasket 5 also gradually Return to original shape and position.

As shown in Fig. 12-Fig. 14, the outer contour of the support plate 6 is cylindrical, and is provided with a support plate screw blind hole 602 corresponding to the stepped through hole B 403 in the ball hoop B 4 along the axial direction, so as to pass through the inner hexagon of the support plate. The screw 61 realizes the screw connection of the ball hoop B and the support plate 6; the support plate 6 is provided with a circular support plate inner hole 601 along the axis, and the support plate inner hole 601 has a gap between the neck smooth section 204 of the BOSS structure 2 and the diameter of the inner hole 601 of the support plate is smaller than the outer diameter of the shoulder 205, so as to block the axial movement of the BOSS structure 2; the support plate 6 is also provided with a plurality of through holes 603 evenly distributed around the circumference for connecting with the container end plate bolted connection.

As mentioned above, the ball ferrule A 3 and the ball ferrule B 4, the ball ferrule B 4 and the support plate 6 are all connected by hexagon socket head screws. Due to the existence of the stepped through holes, the screw heads can be placed on the ball ferrule A 3 and the ball ferrule respectively. In the ferrule B 4 , the end face of the screw head does not exceed the plane of the ball ferrule A3 and the ball ferrule B 4 , thereby ensuring the seamless contact between the ball ferrule A 3 , the ball ferrule B 4 and the support plate 6 . After the ball ferrule A 3 and the ball ferrule B 4 are screwed together, the ball ferrule A 3 will block the stepped through hole 403 on the ball ferrule B 4 . Therefore, during installation, it is necessary to connect the support plate 6 and the ball ferrule B first. 4, and then connect the ball ferrule A 3 and the ball ferrule B 4.

As described above, the outer contours of the ball hoop A3, the ball hoop B4 and the support plate 6 can also be set to a rectangular parallelepiped shape.

The basic principles, main features and beneficial effects of the present invention have been described in detail above. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, additions and equivalent replacements made shall be included within the protection scope of the present invention.

Claims (7)

1. A connecting device of IV-type hydrogen storage bottle and container is characterized in that: the BOSS structure comprises a ball ring (1), wherein the ball ring (1) is provided with a ball ring inner hole (101) with threads, and the ball ring inner hole (101) is connected with a neck thread section (203) of the BOSS structure (2); the outer surface of the ball ring (1) is provided with a spherical groove (102), and a damping gasket (5) is arranged in the spherical groove (102); the outer side of the ball ring (1) is provided with a ball hoop A (3) and a ball hoop B (4), the ball hoop A (3) and the ball hoop B (4) are respectively provided with a ball hoop key A (302) and a ball hoop key B (402), the ball hoop key A (302) and the ball hoop key B (402) are in contact with the damping gasket (5) and are matched with the spherical groove (102), and the outer side plane of the ball hoop B (4) is connected with the support plate (6); the supporting plate (6) is provided with a circular supporting plate inner hole (601), and the supporting plate inner hole (601) is matched with the neck smooth section (204) of the BOSS structure (2); the supporting plate (6) is connected with the end plate of the container.

2. The apparatus of claim 1, wherein the container further comprises: the outer surface of the ball ring (1) is a spherical surface, a circular ball ring inner hole (101) is formed in the middle of the ball ring (1), threads are formed in the ball ring inner hole (101), and two sides of the ball ring (1) are parallel planes and are perpendicular to the axis of the ball ring inner hole (101); the outer surface of the ball ring (1) is provided with a plurality of spherical grooves (102) which are uniformly distributed along the circumference, damping gaskets (5) are respectively arranged on two side surfaces of each spherical groove (102), and two ends of each spherical groove (102) are opened and are provided with groove end baffles (103), so that the ball hoop key A (302) and the ball hoop key B (402) can be conveniently arranged, and the damping gaskets (5) can be prevented from falling off.

3. The apparatus of claim 1, wherein the container further comprises: the BOSS structure (2) is divided into a shoulder part (202) and a neck part (201) along the axial direction, the neck part (201) is divided into two sections, one section is a neck part threaded section (203) with threads on the outer surface, the other section is a neck part smooth section (204) with no threads on the outer surface, and the diameters of the neck part threaded section (203) and the neck part smooth section (204) are equal; the neck thread section (203) is in threaded connection with the inner hole (101) of the ball ring; the outer diameter of the shoulder part (202) is larger than that of the neck part (201) at the connecting surface of the neck part (201) and the shoulder part (202), and a shoulder part (205) is formed.

4. The apparatus of claim 1, wherein the container further comprises: the outer contours of the ball hoop A (3) and the ball hoop B (4) are cylindrical, a spherical hole A (301) and a spherical hole B (401) which correspond to the outer surface of the ball ring (1) are arranged in the middle, and the spherical hole A (301) of the ball hoop A (3) and the spherical hole B (401) of the ball hoop B (4) are in mirror symmetry; the spherical hole A (301) and the spherical hole B (401) are respectively provided with a spherical hoop key A (302) and a spherical hoop key B (402) corresponding to the spherical groove (102), and the spherical hoop key A (302) and the spherical hoop key B (402) are in contact with the damping gasket (5) and are matched with the spherical groove (102); the ball hoop A (3) and the ball hoop B (4) are respectively provided with a plurality of step-shaped through holes A (303) and step-shaped through holes B (403) which are uniformly distributed along the axis direction, and the ball hoop B (4) is provided with a ball hoop B thread blind hole (404) corresponding to the step-shaped through hole A (303) of the ball hoop A (3), so that the screw connection of the ball hoop A (3) and the ball hoop B (4) is realized through a ball hoop inner hexagon screw (41), and the ball ring (1) is limited in the ball hoop A (3) and the ball hoop B (4).

5. The apparatus of claim 1, wherein the container further comprises: the outer contour of the supporting plate (6) is cylindrical, and a threaded blind hole (602) of the supporting plate, which corresponds to the stepped through hole B (403) of the ball hoop B (4), is formed in the axial direction, so that the screw connection between the ball hoop B (4) and the supporting plate (6) is realized through the hexagon socket head cap screw (61) of the supporting plate; a circular support plate inner hole (601) is formed in the support plate (6) along the axis, the support plate inner hole (601) is in clearance fit with the neck smooth section (204) of the BOSS structure (2), and the diameter of the support plate inner hole (601) is smaller than the outer diameter of the shoulder (205), so that the axial movement of the BOSS structure (2) is blocked; the supporting plate (6) is also provided with a plurality of through holes (603) which are uniformly distributed on the circumference and used for being connected with bolts of the end plate of the container.

6. The system of claim 1, wherein said means for connecting a type iv hydrogen storage bottle to a container comprises: the outer contours of the ball hoop A (3), the ball hoop B (4) and the supporting plate (6) are cylindrical or cuboid.

7. A device for connecting type IV hydrogen storage bottle to container as claimed in any one of claims 1 to 6, wherein: the damping gasket (5) is arranged in the spherical groove (102) and is positioned between the spherical groove (102) and the ball hoop key A (302) and the ball hoop key B (402), when the hydrogen storage bottle rotates in the circumferential direction, the ball ring (1) drives the damping gasket (5) to extrude the ball hoop key A (302) and the ball hoop key B (402), the damping gasket (5) deforms, the ball hoop key A (302) and the ball hoop key B (402) keep the original shape, the circumferential rotation of the BOSS structure (1) is allowed and limited, the damping gasket (5) absorbs energy generated by rotation, and the torque born by the connection part of the BOSS structure (1) and the bottle body is relieved.

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