Safety type hydrogenation device valve control structure

Abstract

The utility model discloses a safety type hydrogenation device valve control structure, which belongs to the technical field of hydrogenation valves and comprises a valve body, a valve cover, a compression ring, a seat ring, a valve clack and a valve rod. An S-shaped cavity for hydrogen to flow is formed in the valve body and is divided into a left outflow cavity and a right inflow cavity by the seat ring; the valve rod is vertically movably arranged in the middle of the valve cover; a filling pressure linkage type limiting assembly is arranged on the seat ring. Through the mode, the seat ring and the valve clack abut against each other before hydrogenation operation, so that the inflow cavity and the outflow cavity are in a mutually closed state, if the filling pressure exceeds a set value at the moment, the clamping block is pushed to the upper edge of the valve clack to limit the valve clack on the seat ring, and the valve rod is limited and cannot move up and down at the moment; and when the filling pressure is controlled to be under the allowable maximum filling pressure, the clamping block avoids the valve clack, and the valve rod can move up and down to control the opening and closing states of the seat ring and the valve clack at the moment, so that the hydrogenation operation is normally carried out, and the hydrogenation is ensured to be carried out within a safe range when the valve control structure is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogenation valve technical field, concretely relates to a safe hydrogenation device valve control structure. BACKGROUND

[0002] Fuel cell is an important application of hydrogen energy as clean energy, and usually needs to use special high-pressure hydrogenation equipment to realize the distribution of hydrogen energy.

[0003] Chinese patent CN210218720U discloses a hydrogenation stop valve, which comprises a valve body, a vertical column fixedly arranged at the top center of the valve body, a valve rod penetrating through the vertical column, the valve rod being threadedly connected with the vertical column, and a sealing mechanism fixedly arranged at the bottom end of the valve rod.

[0004] Therefore, the utility model discloses a safe hydrogenation device valve control structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned defects of the prior art, the utility model provides a safe hydrogenation device valve control structure.

[0006] To achieve the above object, the utility model realizes the following technical scheme:

[0007] A safe hydrogenation device valve control structure, comprising a valve body, a valve cover, a compression ring, a seat ring, a valve flap and a valve rod.

[0008] The valve body is provided with an S-shaped cavity for hydrogen flow, and the middle part of the S-shaped cavity is provided with a seat ring.

[0009] The upper opening of the valve body is closed by the valve cover, the upper end of the valve cover is provided with a compression ring, and the upper end of the valve body and the valve cover are fixedly connected with the compression ring.

[0010] The valve rod is movably arranged in the middle part of the valve cover, the lower end of the outflow cavity is fixedly installed with a valve flap, and the seat ring and the valve flap are in abutment to close the S-shaped cavity.

[0011] The filling pressure linkage type limiting assembly is arranged on the seat ring and is used for limiting the up-down movement of the valve disc so that the seat ring and the valve disc are tightly abutted.

[0012] Further, the filling pressure linkage type limiting assembly comprises a mounting seat, a clamping block, a spring and a convex ring, the mounting seat is located in the inflow cavity and is fixedly connected with the seat ring, a sliding cavity is formed in the mounting seat, the side wall of the clamping block is in limiting sliding connection with the inner wall of the sliding cavity, the convex ring is fixedly installed at the right end of the mounting seat, and the spring is arranged in the sliding cavity and is fixedly connected with the clamping block and the convex ring at both ends.

[0013] Further, the lower side of the left end of the clamping block is provided with a guide inclined surface.

[0014] Further, the upper end of the inner wall of the sliding cavity is fixedly installed with a limiting pin, and the upper end of the clamping block is formed with a limiting slot for sliding cooperation with the limiting pin.

[0015] Further, the upper end of the valve body is provided with a valve cover locking assembly, and the valve cover locking assembly is used for locking the valve cover and the valve body through the outflow cavity.

[0016] Further, the valve cover locking assembly is provided with a plurality of locking pins, and the locking pins are uniformly distributed along the valve cover at equal intervals.

[0017] Further, the valve cover locking assembly comprises a locking pin, a locking slot, a gas passage and a piston cavity, the upper end of the valve body is formed with the piston cavity, the locking pin is in limiting sliding connection in the piston cavity, the end of the locking pin close to the valve cover is provided with a ball head structure, the valve cover is formed with the locking slot for clamping cooperation with the ball head structure of the locking pin, and the end of the piston cavity away from the valve cover is communicated with the outflow cavity through the gas passage.

[0018] Further, the close end of the seat ring and the valve disc is provided with a rubber layer for increasing the sealing effect.

[0019] Compared with the prior art, the utility model has the advantages that: 1. before hydrogenation operation, the seat ring and the valve disc abut each other, so that the inflow cavity and the outflow cavity are in a mutually closed state, if the filling pressure exceeds the set value, the clamping block is pushed to the upper side of the valve disc and is limited on the seat ring, at this time, the valve rod cannot move up and down, and when the filling pressure is controlled within the allowable maximum filling pressure, the clamping block avoids the valve disc, at this time, the valve rod can move up and down to control the opening and closing state of the seat ring and the valve disc, normal hydrogenation operation is carried out, and it is ensured that hydrogenation is carried out within a safe range when the valve control structure is used.

[0020] 2. When the hydrogenation operation is carried out, the pressure in the outlet cavity is increased, the ball head of the locking pin is pushed into the locking groove of the valve cover, so that the valve cover is locked by the locking pin and the locking groove, and is further fixed by the pressure ring, realizing double insurance and effectively reducing the possibility of the valve cover flying out due to excessive hydrogenation pressure. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 Structure diagram of a safety type hydrogenation device valve control structure of the present application Figure One

[0023] Figure 2 Structure diagram of a safety type hydrogenation device valve control structure of the present application Figure Two

[0024] Figure 3 Figure 1 Enlarged view of A in FIG. 1

[0025] Figure 4 Figure 1 Enlarged view of B in FIG. 1

[0026] The reference numbers in the drawings represent:

[0027] 10, valve body; 11, S-shaped cavity; 12, inlet cavity; 13, outlet cavity; 2, valve cover; 3, pressure ring; 4, filling pressure linkage type limiting assembly; 41, mounting seat; 42, clamping block; 43, spring; 44, protruding ring; 45, limiting groove; 46, limiting pin; 5, valve cover locking assembly; 51, locking pin; 52, locking groove; 53, gas passage; 54, piston cavity; 6, seat ring; 7, valve disc; 8, valve rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all 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.

[0029] ​​​​In the following description, "left", "right", "front", "back", "upper", "lower" are oriented in the perspective of the front view.

[0030] Embodiment one: in some embodiments, referring to the drawings of the specification Figures 1-4 A safe hydrogenation device valve control structure, comprising a valve body 10, a valve cover 2, a compression ring 3, a seat ring 6, a valve disc 7 and a valve rod 8;

[0031] The valve body 10 is provided with an S-shaped cavity 11 for hydrogen flow, and the middle part of the S-shaped cavity 11 is provided with a seat ring 6, which is divided into a left outflow cavity 13 and a right inflow cavity 12 by the seat ring 6;

[0032] The upper opening of the valve body 10 is closed by the valve cover 2, the upper end of the valve cover 2 is provided with the compression ring 3, and the upper end of the valve body 10 and the valve cover 2 are fixedly connected with the compression ring 3;

[0033] The valve rod 8 is movably arranged in the middle part of the valve cover 2, the lower end of the outflow cavity 13 is fixedly installed with the valve disc 7, and the seat ring 6 and the valve disc 7 are in abutment to close the S-shaped cavity 11; although the illustration is omitted, the upper end of the valve body 10 is also provided with an actuator, and the actuator comprises a working shaft fixedly connected with the valve rod 8. The actuator controls the vertical movement of the valve rod 8 through the working shaft;

[0034] The seat ring 6 is provided with a filling pressure linkage type limiting component 4, which is used to limit the up and down movement of the valve disc 7 so that the seat ring 6 and the valve disc 7 are in close abutment; the proximal end of the seat ring 6 and the valve disc 7 is provided with a rubber layer for increasing the sealing effect.

[0035] The upper end of the valve body 10 is provided with a valve cover locking component 5, which is used to lock the valve cover 2 and the valve body 10 through the outflow cavity 13.

[0036] The filling pressure linkage type limiting component 4 comprises a mounting seat 41, a clamping block 42, a spring 43, a convex ring 44, a limiting groove 45 and a limiting pin 46, the mounting seat 41 is located in the inflow cavity 12 and is fixedly connected with the seat ring 6; a sliding cavity is formed in the mounting seat 41, and the side wall of the clamping block 42 is in limiting sliding connection with the inner wall of the sliding cavity; the lower side of the left end of the clamping block 42 is provided with a guide inclined surface;

[0037] The right end of the mounting seat 41 is fixedly installed with the convex ring 44, the spring 43 is arranged in the sliding cavity, and the two ends of the spring 43 are fixedly connected with the clamping block 42 and the convex ring 44 respectively;

[0038] In the utility model, before hydrogenation operation, the seat ring 6 and the valve disc 7 abut against each other, so that the inflow cavity 12 and the outflow cavity 13 are in the state of mutual closure, if the filling pressure exceeds the set value at this time, the clamping block 42 is pushed to the valve disc 7, until the clamping block 42 moves to the upper edge of the valve disc 7 and limits the valve disc 7 on the seat ring 6, at this time, the valve rod 8 is limited and cannot move up and down, and when the filling pressure is controlled under the allowable maximum filling pressure, the clamping block 42 is reset to the sliding cavity under the driving of the spring 43 and avoids the valve disc 7, at this time, the valve rod 8 can move up and down to control the opening and closing state of the seat ring 6 and the valve disc 7, and normal hydrogenation operation is carried out, so that the hydrogenation is carried out in the safe range when the valve control structure is used.

[0039] The upper end of the inner wall of the sliding cavity is fixedly installed with a limiting pin 46, and the upper end of the clamping block 42 is provided with a limiting groove 45 matched with the limiting pin 46 for sliding, and the displacement of the clamping block 42 is limited through the cooperation of the limiting groove 45 and the limiting pin 46, so that the possibility of damage of the clamping block 42 is reduced.

[0040] The valve cover locking assembly 5 is provided with a plurality of and is uniformly distributed along the valve cover 2 at equal intervals in the radial direction.

[0041] The valve cover locking assembly 5 comprises a locking pin 51, a locking groove 52, an air path 53 and a piston cavity 54, the upper end of the valve body 10 is provided with the piston cavity 54, the locking pin 51 is limitedly and slidably connected in the piston cavity 54, one end of the locking pin 51 close to the valve cover 2 adopts a ball head structure, the valve cover 2 is provided with the locking groove 52 matched with the ball head structure of the locking pin 51 for clamping, the end of the piston cavity 54 away from the valve cover 2 is communicated with the outflow cavity 13 through the air path 53, when hydrogenation operation is carried out, the pressure in the outflow cavity 13 increases, the ball head of the locking pin 51 is pushed into the locking groove 52 of the valve cover 2, so that the valve cover 2 is locked by the cooperation of the locking pin 51 and the locking groove 52, and is further fixed together with the pressure ring 3, double insurance is realized, and the possibility of flying out of the valve cover 2 due to excessive hydrogenation pressure is effectively reduced.

[0042] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been explained 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 still be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A safe hydrogenation device valve control structure, comprising a valve body (10), a valve cover (2), a compression ring (3), a seat ring (6), a valve disc (7) and a valve stem (8), characterized in that: an S-shaped cavity (11) for hydrogen flow is arranged in the valve body (10), the middle part of the S-shaped cavity (11) is provided with the seat ring (6), and the S-shaped cavity (11) is divided into a left outflow cavity (13) and a right inflow cavity (12) by the seat ring (6); the upper opening of the valve body (10) is closed by the valve cover (2), the upper end of the valve cover (2) is provided with the compression ring (3), and the upper end of the valve body (10) and the valve cover (2) are fixedly connected with the compression ring (3); the valve stem (8) is movably arranged in the middle part of the valve cover (2), the lower end of the outflow cavity (13) is fixedly installed with the valve disc (7), and the seat ring (6) and the valve disc (7) are abutted to close the S-shaped cavity (11); the seat ring (6) is provided with a filling pressure linkage type limiting assembly (4), which is used to limit the up-down movement of the valve disc (7) so that the seat ring (6) and the valve disc (7) are tightly abutted.

2. The safety hydrogenation device valve control structure according to claim 1, wherein the filling pressure linkage type limiting assembly (4) comprises a mounting seat (41), a clamping block (42), a spring (43) and a protruding ring (44), the mounting seat (41) is located in the inflow cavity (12) and is fixedly connected with the seat ring (6); a sliding cavity is formed in the mounting seat (41), the side wall of the clamping block (42) is limitingly and slidably connected with the inner wall of the sliding cavity; the right end of the mounting seat (41) is fixedly installed with the protruding ring (44), the spring (43) is arranged in the sliding cavity, and the two ends of the spring (43) are fixedly connected with the clamping block (42) and the protruding ring (44) respectively.

3. The safety hydrogenation device valve control structure according to claim 2, wherein the lower side of the left end of the clamping block (42) is provided with a guide inclined surface.

4. The safety hydrogenation device valve control structure according to claim 2, wherein the upper end of the inner wall of the sliding cavity is fixedly installed with a limiting pin (46), and the upper end of the clamping block (42) is provided with a limiting groove (45) for sliding with the limiting pin (46).

5. The safety hydrogenation valve control architecture of claim 1, wherein, the upper end of the valve body (10) is provided with a valve cover locking assembly (5), which is used to lock the valve cover (2) and the valve body (10) through the outflow cavity (13).

6. The safety hydrogenation valve control structure according to claim 5, wherein the valve cover locking assembly (5) is provided with a plurality of valve cover locking assemblies (5), which are evenly distributed along the valve cover (2) at equal intervals in the radial direction.

7. The safety hydrogenation valve control structure according to claim 5, wherein the valve cover locking assembly (5) comprises a locking pin (51), a locking groove (52), an air path channel (53) and a piston cavity (54), the upper end of the valve body (10) is provided with the piston cavity (54), the locking pin (51) is limitingly and slidably connected in the piston cavity (54), the end of the locking pin (51) close to the valve cover (2) adopts a ball head structure, the valve cover (2) is provided with the locking groove (52) matched with the ball head structure of the locking pin (51) for clamping, and the end of the piston cavity (54) away from the valve cover (2) is communicated with the outflow cavity (13) through the air path channel (53).

8. The safety hydrogenation valve control architecture of claim 1, wherein, the ends close to each other of the seat ring (6) and the valve disc (7) are provided with rubber layers for increasing the sealing effect.

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