Ultralow-temperature ball valve for conveying liquid hydrogen

Abstract

The utility model discloses an ultra-low temperature ball valve for liquid hydrogen conveying, which belongs to the technical field of ball valves and comprises a valve body, a rotating rod is rotatably arranged on the valve body, a connecting block is fixedly connected to the top end of the rotating rod, a handle block is fixedly connected to the connecting block, two holding grooves are symmetrically formed in the handle block, and the handle block is fixedly connected to the valve body. A positioning rod is rotationally connected to one side of the connecting block, a torsional spring is arranged at the rotating position of the positioning rod, and a side contact block is fixedly connected to the positioning rod; according to the utility model, after the handle block is rotated and adjusted, once a hand on the handle block leaves, the positioning rod is clamped into the corresponding arc-shaped positioning groove on the limiting ring block again due to outward rotation under the springback of the torsion spring, so as to realize the positioning of the handle block; and a plurality of arc-shaped positioning grooves are formed in the limiting ring block, so that the handle block can be adjusted at different angles and limited, the handle block cannot deflect at multiple angles, and the stability of the valve body after adjustment is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and in particular relates to an ultra-low temperature ball valve for liquid hydrogen transportation. Background Art

[0002] Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The hard-sealed V-type ball valve has a strong shear force between its V-type ball core and the metal valve seat with hard alloy surfacing, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels. This type of valve should generally be installed horizontally in the pipeline. Ball valves are divided into: pneumatic ball valves, electric ball valves, and manual ball valves according to the driving method.

[0003] Chinese patent announcement number CN214946536U discloses an ultra-low temperature ball valve, including a valve body, characterized in that: a ball valve is rotatably connected inside the valve body, a rotating rod is fixedly connected to the ball valve, the rotating rod is rotatably connected to the valve body, a handle is fixedly connected to the rotating rod, a fixed disk is rotatably sleeved on the outer side of the rotating rod, the fixed disk is fixedly connected to the valve body, a card slot is provided on the fixed disk, a card block is carded inside the card slot, a hinge rod is fixedly connected to the card block, and so on, wherein the card block on the hinge rod is carded in the card slots on both sides to prevent the handle from affecting the use of the ball valve due to accidental deviation, but it can only position and fix the handle when the ball valve is fully opened or fully closed. When the handle drives the ball valve to deflect a certain adjustment angle, the handle will still deviate because the angle of the card block does not correspond to the card slot. Therefore, an ultra-low temperature ball valve for liquid hydrogen transportation is needed to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a cryogenic ball valve for liquid hydrogen transportation to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cryogenic ball valve for liquid hydrogen transportation, comprising a valve body, a rotating rod is rotatably provided on the valve body, a connecting block is fixedly connected to the top end of the rotating rod, a handle block is fixedly connected to the connecting block, two grasping grooves are symmetrically provided on the handle block, a positioning rod is rotatably connected to one side of the connecting block, a torsion spring is provided at the rotation position of the positioning rod, a side contact block is fixedly connected to the positioning rod, a limiting ring block is fixedly provided on the valve body, an arc surface is provided on the limiting ring block, a plurality of arc-shaped positioning grooves are provided on the arc surface of the limiting ring block, and one end of the positioning rod is inserted into the arc-shaped positioning groove.

[0006] By setting the above structure, when the handle block is rotated, the user can clamp his fingers in the two grasping grooves on the handle block. At this time, since the side contact block is located on one side of the grasping groove, the protruding part of the fist when the hand grasps it will press against one side of the side contact block. When the side contact block is pressed and rotated to give way, it will drive the positioning rod below to rotate inward, so that the positioning rod can synchronously disengage from the clamping positioning in the arc-shaped positioning groove on the limiting ring block. In this way, the user can rotate and adjust the handle block on the valve body. After the handle block is rotated and adjusted, once the hand on the handle block is removed, the positioning rod is again clamped into the corresponding arc-shaped positioning groove on the limiting ring block due to the rebound of the torsion spring due to its outward rotation, so as to realize the positioning of the handle block. During this period, the multiple arc-shaped positioning grooves on the limiting ring block can realize the adjustment of the handle block at different angles and limit it, which helps to ensure that the handle block will not deflect at multiple angles, thereby helping to ensure the stability of the valve body after adjustment.

[0007] As a preferred implementation, a sealing ring is provided at the rotation point between the valve body and the rotating rod.

[0008] As a preferred implementation, the side contact block is located on one side of one of the grasping grooves.

[0009] As a preferred implementation, a ball valve is arranged inside the valve body.

[0010] As a preferred implementation manner, the ball valve is fixedly connected to the bottom end of the rotating rod.

[0011] As a preferred implementation, both sides of the valve body are connected with pipe connection parts.

[0012] By setting a sealing ring, when the rotating rod drives the valve body to rotate and adjust, the rotating part of the rotating rod and the valve body can be sealed due to the setting of the sealing ring. In addition, since the grip of the handle block and the clamping function of the positioning rod are an integrated linkage structure, personnel can easily operate and control it.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a positioning rod, when the handle block is rotated, the user can clamp the fingers in the two grasping grooves on the handle block. At this time, since the side contact block is located on one side of the grasping groove, the protruding part of the fist when the hand grasps will press against one side of the side contact block. When the side contact block is pressed and rotated to give way, it will drive the positioning rod below to rotate inward, so that the positioning rod can be synchronously disengaged from the clamping and positioning in the arc-shaped positioning groove on the limiting ring block. In this way, the user can rotate and adjust the handle block on the valve body. After the rotation and adjustment of the handle block is completed, once the hand on the handle block is removed, under the rebound of the torsion spring, the positioning rod is again clamped into the corresponding arc-shaped positioning groove on the limiting ring block due to its outward rotation, so as to realize the positioning of the handle block. During this period, the multiple arc-shaped positioning grooves on the limiting ring block can realize the adjustment of the handle block at different angles and limit it, which helps to ensure that the handle block will not deflect at multiple angles, thereby helping to stabilize the valve body after adjustment.

[0015] The utility model provides a sealing ring, when the rotating rod drives the valve body to rotate and adjust, the rotating part of the rotating rod and the valve body can be sealed due to the setting of the sealing ring. In addition, the gripping function of the handle block and the clamping function of the positioning rod are an integrated linkage structure, so that personnel can conveniently operate and control it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the torsion spring of the utility model;

[0019] Figure 4 It is a schematic diagram of the cutaway three-dimensional structure of the utility model.

[0020] In the figure: 1. valve body; 2. rotating rod; 3. connecting block; 4. handle block; 5. grasping groove; 6. positioning rod; 7. torsion spring; 8. side contact block; 9. limiting ring block; 10. arc surface; 11. arc positioning groove; 12. sealing ring; 13. ball valve; 14. pipe connection part. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] See also Figure 1-4 The utility model provides an ultra-low temperature ball valve for liquid hydrogen transportation, including a valve body 1, a rotating rod 2 is rotatably arranged on the valve body 1, a connecting block 3 is fixedly connected to the top of the rotating rod 2, a handle block 4 is fixedly connected to the connecting block 3, two grasping grooves 5 are symmetrically provided on the handle block 4, a positioning rod 6 is rotatably connected to one side of the connecting block 3, a torsion spring 7 is arranged at the rotation position of the positioning rod 6, a side contact block 8 is fixedly connected to the positioning rod 6, a limiting ring block 9 is fixedly arranged on the valve body 1, an arc surface 10 is arranged on the limiting ring block 9, a plurality of arc-shaped positioning grooves 11 are arranged on the arc-shaped positioning groove 11, one end of the positioning rod 6 is inserted into the arc-shaped positioning groove 11, by setting the above structure, when the handle block 4 is held and rotated, the user can hold the fingers in the two grasping grooves 5 on the handle block 4, at this time, because the side contact block 8 is located on one side of the grasping groove 5, When the user grasps the handle 4, the protruding part of the fist will press against one side of the side contact block 8. When the side contact block 8 is pressed and rotated to give way, it will drive the positioning rod 6 below to rotate inward, so that the positioning rod 6 can synchronously disengage from the clamping position in the arc-shaped positioning groove 11 on the limiting ring block 9. In this way, the user can rotate and adjust the handle block 4 on the valve body 1. After the handle block 4 is rotated and adjusted, once the hand on the handle block 4 is removed, under the rebound of the torsion spring 7, the positioning rod 6 is again clamped into the corresponding arc-shaped positioning groove 11 on the limiting ring block 9 due to its outward rotation, so as to realize the positioning of the handle block 4. During this period, the multiple arc-shaped positioning grooves 11 on the limiting ring block 9 can realize the adjustment of the handle block 4 at different angles and limit it, thereby helping to ensure that the handle block 4 will not deflect at multiple angles, thereby helping to ensure the stability of the valve body 1 after adjustment.

[0024] A sealing ring 12 is provided at the rotation point between the valve body 1 and the rotating rod 2 .

[0025] The side contact block 8 is located on one side of one of the grip grooves 5 .

[0026] A ball valve 13 is arranged inside the valve body 1 .

[0027] The ball valve 13 is fixedly connected to the bottom end of the rotating rod 2 .

[0028] Both sides of the valve body 1 are connected with pipe connection parts 14. By setting the sealing ring 12, when the rotating rod 2 drives the 13 in the valve body 1 to rotate and adjust, the rotating part of the rotating rod 2 and the valve body 1 can be sealed due to the setting of the sealing ring 12. In addition, since the grip of the handle block 4 and the clamping function of the positioning rod 6 are an integrated linkage structure, it is convenient for personnel to operate and control it.

[0029] The working principle and use process of the utility model are as follows: first, when the handle block 4 is rotated, the user can clamp the fingers in the two grasping grooves 5 on the handle block 4. At this time, since the side contact block 8 is located on one side of the grasping groove 5, the protruding part of the fist when the hand grasps will press against one side of the side contact block 8. When the side contact block 8 is pressed and rotated to give way, it will drive the positioning rod 6 below to rotate inward, so that the positioning rod 6 can be synchronously disengaged from the card-engaged positioning in the arc-shaped positioning groove 11 on the limit ring block 9. In this way, the user can rotate and adjust the handle block 4 on the valve body 1. When the handle block 4 is rotated and adjusted, once the hand on the handle block 4 is removed, the torsion spring 7 will rebound. Under, the positioning rod 6 is again inserted into the corresponding arc-shaped positioning groove 11 on the limiting ring block 9 due to its outward rotation, so as to realize the positioning of the handle block 4. During this period, the multiple arc-shaped positioning grooves 11 on the limiting ring block 9 can realize the adjustment of the handle block 4 at different angles and limit the position, thereby helping to ensure that the handle block 4 will not deflect at multiple angles. By setting the sealing ring 12, when the rotating rod 2 drives the 13 in the valve body 1 to rotate and adjust, the rotating part of the rotating rod 2 and the valve body 1 can be sealed due to the setting of the sealing ring 12. In addition, since the grasping function of the handle block 4 and the clamping function of the positioning rod 6 are an integrated linkage structure, it is convenient for personnel to operate and control it.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cryogenic ball valve for liquid hydrogen transportation, comprising a valve body (1), characterized in that: A rotating rod (2) is rotatably arranged on the valve body (1), a connecting block (3) is fixedly connected to the top end of the rotating rod (2), a handle block (4) is fixedly connected to the connecting block (3), two grasping grooves (5) are symmetrically provided on the handle block (4), a positioning rod (6) is rotatably connected to one side of the connecting block (3), a torsion spring (7) is provided at the rotation point of the positioning rod (6), a side contact block (8) is fixedly connected to the positioning rod (6), a limiting ring block (9) is fixedly arranged on the valve body (1), an arc surface (10) is provided on the limiting ring block (9), a plurality of arc-shaped positioning grooves (11) are provided on the arc surface (10) of the limiting ring block (9), and one end of the positioning rod (6) is inserted into the arc-shaped positioning groove (11).

2. The ultra-low temperature ball valve for liquid hydrogen transportation according to claim 1, characterized in that: A sealing ring (12) is provided at the rotation point between the valve body (1) and the rotating rod (2).

3. The ultra-low temperature ball valve for liquid hydrogen transportation according to claim 1, characterized in that: The side contact block (8) is located on one side of one of the grasping grooves (5).

4. The ultra-low temperature ball valve for liquid hydrogen transportation according to claim 1, characterized in that: A ball valve (13) is arranged inside the valve body (1).

5. The ultra-low temperature ball valve for liquid hydrogen transportation according to claim 4, characterized in that: The ball valve (13) is fixedly connected to the bottom end of the rotating rod (2).

6. The ultra-low temperature ball valve for liquid hydrogen transportation according to claim 1, characterized in that: Both sides of the valve body (1) are connected and provided with pipe connection parts (14).

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