Hydrogenation ball valve with self-locking function

Abstract

The utility model discloses a hydrogenation ball valve with a self-locking function, which belongs to the technical field of valves, and comprises a valve body, a valve core, a valve cover, a filling pressure detection self-locking mechanism, a valve rod and a valve cover positioning mechanism, the upper end of the valve element is connected with a valve rod used for enabling the valve element to rotate to open and close the ball valve. The valve body is provided with a filling pressure detection self-locking mechanism used for locking the ball valve when the hydrogen pressure of the hydrogen inlet end is larger than the safety range. And a valve cover positioning mechanism for positioning and locking the valve cover is mounted on the outer side wall of the valve body. By means of the mode, when the hydrogen pressure on the hydrogen inlet side is too large and a hydrogen pipe on the hydrogen outlet side is damaged, the valve element can be locked, and the ball valve cannot be communicated; and when the valve cover is mounted, bolts of the flange on the valve cover do not need to be symmetrically screwed one by one through the valve cover positioning mechanism and are screwed in sequence, so that the time of an operator is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a hydrogenation ball valve with self locking function. BACKGROUND

[0002] Valves are essential equipment widely used in petroleum and chemical industry, power, hydrogen treatment, pharmaceutical, food and beverage industries; with the continuous development of science and technology, valve technology is also constantly innovating; for example, the application of intelligent valves gradually increases, which can realize remote monitoring, automatic control, improve work efficiency and safety.

[0003] Chinese patent CN205013740U discloses a guide groove type lifting rod ball valve, containing hand wheel, valve stem nut, guide pin, pressing plate, valve stem, valve cover, ball pin, elastic sealing valve seat, ball, valve body;The center of the valve body is provided with a ball, and the ball is connected with one end of the valve stem, the ball is provided with a ball pin, the upper end of the valve cover is connected with the valve cover, the middle part of the valve cover is provided with a pressing plate, the upper part of the valve cover is provided with a guide pin, the top of the valve cover is provided with a valve stem nut, and the upper end of the valve stem nut is provided with a hand wheel;The ball is provided with an elastic sealing valve seat;The valve seat comprises an outer ring and an inner ring;The outer circle of the inner ring is in interference fit with the inner circle of the outer ring;The guide groove type lifting rod ball valve solves the problem that hard sealing cannot be compensated after wear, the rolling angle becomes large and leakage is easy, and has a long service life, and the utility model has the advantages of simple structure, reasonable setting, low manufacturing cost and the like;But the device still has the following problems:

[0004] 1、If the filling pressure of hydrogen is too large, the device filled with hydrogen is easy to be damaged, and adverse effects are caused

[0005] 2, when the valve core is replaced, in order to prevent the flange from deviating, the screws on the flange need to be screwed symmetrically one by one, which wastes the time of the operator.

[0006] Therefore, the utility model discloses a hydrogenation ball valve with self locking function to solve the above problems. CONTENT OF THE UTILITY MODEL

[0007] In view of the above shortcomings of the prior art, the utility model provides a hydrogenation ball valve with self locking function.

[0008] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0009] A hydrogenation ball valve with self locking function, comprising a valve body, a valve core and a valve cover, further comprising a filling pressure detection self locking mechanism, a valve stem and a valve cover positioning mechanism;

[0010] The upper end of the valve core is connected with the valve stem for rotating the valve core to open and close the ball valve;

[0011] The valve body is provided with a filling pressure detection self-locking mechanism for locking the ball valve when the hydrogen inlet side hydrogen pressure is greater than a safety range;

[0012] The filling pressure detection self-locking mechanism comprises a hydrogen pressure detection assembly and a valve core locking assembly, the hydrogen pressure detection assembly is connected to the valve body on the hydrogen inlet side of the valve body, the valve core locking assembly is connected to the hydrogen pressure detection assembly, and the valve body and the valve core are both connected to the valve core locking assembly; the hydrogen pressure detection assembly is used to drive the valve core locking assembly to detect the hydrogen pressure, and the valve core locking assembly is used to lock the valve core when the hydrogen pressure is greater than a limit value, so that the valve core cannot be rotated to open the hydrogen inlet port;

[0013] The outer wall of the valve body is provided with a valve cover positioning mechanism for positioning and locking the valve cover;

[0014] Further, the filling pressure detection self-locking mechanism comprises a piston, a clamping block and a locking groove, a piston groove is formed in the valve body and is in communication with the hydrogen inlet end of the valve body; the left end of the piston is fixedly provided with the clamping block, and the upper end of the valve core is provided with the locking groove which is clamped with the clamping block.

[0015] Further, the filling pressure detection self-locking mechanism further comprises a spring and a fixed ring, the fixed ring is fixedly installed in the piston groove, and the left end and the right end of the spring are fixedly connected with the fixed ring and the piston respectively. The hydrogen pressure detection assembly comprises a piston; a piston groove is formed at the position where the hydrogen inlet side of the valve body is connected with the hydrogen inlet pipe, and two pistons are installed in the piston groove; the two pistons are both slidingly connected with the valve body through the piston groove; the two pistons are located at both ends of the piston groove.

[0016] Further, the valve core locking assembly comprises a clamping block, a spring one and a fixed ring, the clamping block is fixedly connected with the inner side of the piston away from the hydrogen inlet side, the inner side wall of the one end of the piston groove away from the hydrogen inlet pipe is fixedly provided with the fixed ring, the one end of the fixed ring close to the piston is fixedly connected with one end of the spring one, the other end of the spring one is fixedly connected with the outer side of the piston away from the hydrogen inlet side, and the upper end of the valve core close to the one side of the hydrogen inlet pipe is provided with a fixed groove, and the clamping block is slidingly connected with the valve core through the fixed groove.

[0017] Further, the valve cover positioning mechanism comprises a connecting rod, a rotating shaft and a spring two; the lower end of the spring two is fixedly connected with the upper end of the valve body, the upper end of the spring two is fixedly connected with one end of the connecting rod, the other end of the connecting rod is clamped with the valve cover, the middle part of the connecting rod is fixedly connected with the rotating shaft, and the both ends of the rotating shaft are rotatably connected with the upper end of the valve body through connecting pieces.

[0018] Further, a recess is formed in the valve rod, and a protrusion is installed on the inner wall of the upper end of the valve cover which is in contact with the valve rod, so that the valve rod is driven to rotate when it moves downward.

[0019] Further, the two pistons are sealingly arranged in the piston groove.

[0020] Further, the plurality of valve cover positioning mechanisms are symmetrically arranged at the upper end of the valve body.

[0021] Further, the filling pressure detection self-locking mechanism is arranged at the hydrogen inlet end of the valve body.

[0022] Compared with the prior art, the utility model has the beneficial effects that: 1, the utility model for sale can realize when hydrogen gas pressure of hydrogen gas side is too big and damages hydrogen gas pipe of hydrogen gas side locking valve core, make ball valve unable to connect;

[0023] 2, the utility model discloses a valve cover positioning mechanism when installing the valve cover, make the bolt of the flange on the valve cover not need to be twisted symmetrically one by one, and can be twisted according to the order, save the time of operating personnel. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings required to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0025] Figure 1 It is a perspective view of the hydrogenation ball valve with self-locking function of the utility model Figure 1 ;

[0026] Figure 2 It is a front view of the hydrogenation ball valve with self-locking function of the utility model;

[0027] Figure 3 It is a left view of the hydrogenation ball valve with self-locking function of the utility model;

[0028] Figure 4 It is a perspective view along the B-B direction of Figure 3 ;

[0029] Figure 5 It is a perspective view of the filling pressure detection self-locking mechanism of Figure 4 ;

[0030] Figure 6 It is an enlarged view of A in Figure 1 ;

[0031] The reference numerals in the drawings respectively represent:

[0032] 1, valve body; 2, valve core; 3, filling pressure detection self-locking mechanism; 31, piston; 32, clamping block; 33, spring; 34, fixed ring; 35; 4, valve rod; 5, valve cover; 6, valve cover positioning mechanism; 61, connecting rod; 62, shaft; 63, spring two. DETAILED DESCRIPTION

[0033] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] In the following description, "left", "right", "front", "rear", "upper", "lower" are oriented with the perspective of the front view.

[0035] Embodiment one: in some embodiments, referring to the drawings of the specification Figures 1-6 A hydrogen filling ball valve with self-locking function, comprising a valve body 1, a valve core 2 and a valve cover 5:

[0036] The upper end of the valve core 2 is connected with a valve rod 4 for rotating the valve core 2 to open and close the ball valve;

[0037] The valve body 1 is provided with a filling pressure detection self-locking mechanism 3 for locking the ball valve when the hydrogen pressure at the hydrogen inlet end is greater than the safe range; the filling pressure detection self-locking mechanism 3 is arranged at the hydrogen inlet end of the valve body 1;

[0038] The outer side wall of the valve body 1 is provided with a valve cover positioning mechanism 6 for positioning and locking the valve cover 5; a plurality of valve cover positioning mechanisms 6 are symmetrically arranged at the upper end of the valve body 1;

[0039] In the present application, when the ball valve is opened, hydrogen flows from the hydrogen inlet side inside the valve body 1 and flows out from the hydrogen outlet side inside the valve body 1; when the ball valve is closed, if the gas pressure is greater than the limit value, the filling pressure detection self-locking mechanism 3 locks the valve core 2 with the locking assembly 32, so that the valve core 2 cannot rotate, thereby driving the valve rod 4 to be unable to rotate, thereby avoiding the damage of the hydrogen outlet side hydrogen pipe due to the excessive hydrogen pressure after being connected; when the valve core 2 needs to be closed after replacement, the valve cover positioning mechanism 6 is used to pre-lock the valve cover positioning mechanism 6 first, so that the screws on the flange do not need to be screwed into the symmetric positions one by one.

[0040] The filling pressure detection self-locking mechanism 3 comprises a piston 31, a clamping block 32, a spring 33, a fixed ring 34 and a locking groove 35, a piston groove is formed in the valve body 1, and the piston groove is communicated with the gas inlet end of the valve body 1;

[0041] The fixed ring 34 is fixedly installed in the piston groove, the left end and the right end of the spring 33 are fixedly connected with the fixed ring 34 and the piston 31 respectively, the left end of the piston 31 is fixedly installed with the clamping block 32, and the upper end of the valve core 2 is provided with the locking groove 35 for clamping the clamping block 32.

[0042] In the utility model, when the valve core 2 is in the full closed state, the piston groove of the valve body 1 is aligned with the locking groove 35 of the valve core 2, at this moment, if the hydrogen pressure of the hydrogen inlet side is too large, the piston 31 in the piston groove is pushed to the valve core 2, if the hydrogen pressure exceeds the safety range, the clamping block 32 is clamped into the locking groove 35 of the valve core 2 under the drive of the piston 31, the valve core 2 is locked and fixed, so that the operator cannot rotate the valve core 2 to the open state through the valve rod 4, only when the pressure of the hydrogen source is reduced to the safety value, the clamping block 32 is reset under the drive of the spring 33, so that the valve core 2 can be rotated, and when the valve core 2 is in the open state, the piston groove of the valve body 1 is misaligned with the locking groove 35 of the valve core 2, and the clamping block 32 does not affect the normal opening of the valve core 2.

[0043] The valve cover positioning mechanism 6 comprises a connecting rod 61, a rotating shaft 62 and a spring two 63, the lower end of the spring two 63 is fixedly connected with the upper end of the valve body 1, the upper end of the spring two 63 is fixedly connected with one end of the connecting rod 61, the other end of the connecting rod 61 is clamped with the valve cover 5, the middle part of the connecting rod 61 is fixedly connected with the rotating shaft 62, and the two ends of the rotating shaft 62 are rotationally connected with the upper end of the valve body 1 through connecting pieces.

[0044] In the utility model, the operator places the valve cover 5 in the middle of the plurality of valve cover positioning mechanisms 6, the spring two 63 upwardly pushes one end of the connecting rod 61, the connecting rod 61 rotates around the rotating shaft 62, the plurality of connecting rods 61 are not connected with one end of the spring two 63 after rotating, and the one end cooperates to clamp the position of the valve cover 5, at this moment, the bolts of the flange on the valve cover 5 do not need to be symmetrically tightened, and the time of the operator is saved.

[0045] The recess is formed in the valve rod 4, the convex block is installed on the inner wall of the valve cover 5 in contact with the valve rod 4, so that the valve rod 4 is driven to rotate when moving downward.

[0046] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced equivalently; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A hydrogen ball valve with self-locking function, comprising a valve body (1), a valve core (2) and a valve cover (5), characterized in that: It also comprises a filling pressure detection self-locking mechanism (3), a valve rod (4) and a valve cover positioning mechanism (6). The upper end of the valve core (2) is connected with the valve rod (4) for rotating the valve core (2) to open and close the ball valve. The valve body (1) is installed with the filling pressure detection self-locking mechanism (3) for locking the ball valve when the hydrogen pressure at the hydrogen inlet end is greater than the safe range. The outer wall of the valve body (1) is installed with the valve cover positioning mechanism (6) for positioning and locking the valve cover (5).

2. The hydrogen ball valve having a self-locking function according to claim 1, wherein, The filling pressure detection self-locking mechanism (3) comprises a piston (31), a clamping block (32) and a locking groove (35), the valve body (1) is provided with a piston groove, and the piston groove is in communication with the hydrogen inlet end of the valve body (1); the left end of the piston (31) is fixedly installed with the clamping block (32), and the upper end of the valve core (2) is provided with the locking groove (35) for clamping the clamping block (32).

3. The hydrogen ball valve having a self-locking function according to claim 2, characterized in that, The filling pressure detection self-locking mechanism (3) further comprises a spring (33) and a fixed ring (34), the piston groove is fixedly installed with the fixed ring (34), and the left end and the right end of the spring (33) are fixedly connected with the fixed ring (34) and the piston (31) respectively.

4. The hydrogen ball valve having a self-locking function according to claim 3, characterized in that, The valve cover positioning mechanism (6) comprises a connecting rod (61), a rotating shaft (62) and a second spring (63); the lower end of the second spring (63) is fixedly connected with the upper end of the valve body (1), the upper end of the second spring (63) is fixedly connected with one end of the connecting rod (61), the other end of the connecting rod (61) is clamped with the valve cover (5), the middle part of the connecting rod (61) is fixedly connected with the rotating shaft (62), and the both ends of the rotating shaft (62) are rotatably connected with the upper end of the valve body (1) through connecting pieces.

5. The hydrogen ball valve having a self-locking function according to claim 4, characterized in that, The valve rod (4) is provided with a groove, and the inner wall of the valve cover (5) in contact with the valve rod (4) is installed with a protrusion, so that the valve rod (4) is driven to rotate when it moves downward.

6. The hydrogen ball valve having a self-locking function according to claim 5, wherein, The two pistons (311) are sealingly arranged in the piston groove (312).

7. The hydrogen ball valve having a self-locking function according to claim 1, wherein The multiple valve cover positioning mechanisms (6) are symmetrically arranged at the upper end of the valve body (1).

8. The hydrogen ball valve having a self-locking function according to claim 7, characterized in that, The filling pressure detection self-locking mechanism (3) is arranged at the hydrogen inlet end of the valve body (1).

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