Straight-through hydrogen energy ball valve structure

Abstract

The utility model relates to the technical field of valves, in particular to a straight-through hydrogen energy ball valve structure which comprises a valve body, an installation cavity is formed in the valve body, and medium channels are arranged at the two ends of the valve body and directly face the installation cavity respectively in a penetrating mode. The valve seats are installed at the two ends of the installation cavity respectively, and the valve element is installed between the two valve seats in the installation cavity through the valve rod. The valve element is provided with a connecting through hole which is horizontally formed in a penetrating mode and can communicate the two medium channels. An actuator is arranged above the valve body, and the driving end of the actuator is connected with the valve rod and can drive the valve element to rotate so that the two medium channels can be disconnected. A valve seat spring is arranged between the valve body and the valve seat, and the valve seat spring can push the valve seat to have the tendency of horizontally moving towards the valve element. The utility model has the characteristics of being more convenient to disassemble and assemble, and being capable of better maintaining the working reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a structure of a direct-through hydrogen energy ball valve. Background Art

[0002] Ball valves are mainly used for cutting off, distributing and changing the flow direction of media in pipelines. A hydrogen energy ball valve refers to a device for regulating, controlling and guiding the flow of hydrogen, and is mainly applied to scenarios such as on-vehicle hydrogen storage / supply systems, fuel cell power systems, and hydrogen production, storage, transportation and refueling systems.

[0003] During the working process of the existing hydrogen energy ball valves, after the valve core and the valve seat cooperate multiple times to complete cutting off, distributing and changing the flow direction of the media, both the valve core and the valve seat will be worn, resulting in the reduction of the working reliability as the working time of the ball valve increases. Secondly, in the existing ball valve structure, there are also disadvantages that the sealing of the valve stem part is not reliable enough and it is not convenient for disassembly and assembly.

[0004] Therefore, how to provide a structure of a direct-through hydrogen energy ball valve with a simpler and more reasonable structure design, more convenient disassembly and assembly, and better maintenance of working reliability has become a technical problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is how to provide a structure of a direct-through hydrogen energy ball valve with a simpler and more reasonable structure design, more convenient disassembly and assembly, and better maintenance of working reliability.

[0006] To achieve the above object, the utility model provides a structure of a direct-through hydrogen energy ball valve, which includes a valve body. The valve body has an installation cavity inside, and medium channels are respectively provided at both ends of the valve body and penetrate through the installation cavity. Valve seats are respectively installed at both ends of the installation cavity, and a valve core is installed between the two valve seats in the installation cavity through a valve stem. The valve core has a connection through hole horizontally penetrating through it and can connect the two medium channels. An actuator is provided above the valve body, and the driving end of the actuator is connected to the valve stem and can drive the valve core to rotate so that the two medium channels are disconnected. Its feature lies in that a valve seat spring is arranged between the valve body and the valve seat, and the valve seat spring can push the valve seat to have a tendency to move horizontally towards the valve core.

[0007] In this way, in the above-mentioned structure of the direct-through hydrogen energy ball valve, through the valve seat spring arranged between the valve body and the valve seat, during the working process of the direct-through hydrogen energy ball valve, the gap generated by the mutual rotation and friction between the valve seat and the valve core can be compensated, so that the working reliability can be better maintained.

[0008] As an optimization, the installation cavity includes installation hole segments at both ends, and the diameter of the installation hole segments is set to be larger than that of the medium channel; the valve seat is arranged in the installation hole segments, and a valve seat spring is arranged between the stepped surface at the outer end of the installation hole segments and the valve seat.

[0009] In this way, by forming installation hole segments at both ends of the installation cavity respectively, it is more convenient to install and arrange the valve seat and the valve seat spring, and the structural design is more compact and reasonable.

[0010] As an optimization, a circular fitting groove is arranged on the stepped surface at the outer end of the installation hole segments, and the end of the valve seat spring is fitted and arranged in the fitting groove.

[0011] In this way, by designing the fitting groove, the correct position of the valve seat spring can be better guaranteed.

[0012] As an optimization, the valve seat includes a front valve seat section, a middle valve seat section and a rear valve seat section; and the diameters of the front valve seat section, the middle valve seat section and the rear valve seat section are set to decrease in sequence; an O-ring is arranged between the outer periphery of the middle valve seat section and the inner peripheral wall of the installation hole segments; a valve seat gasket is arranged on the stepped surface formed between the rear valve seat section and the middle valve seat section, and a butt convex portion protruding towards the O-ring is arranged on the surface of the valve seat gasket and abuts and supports on the O-ring; and one end of the valve seat spring abuts and supports on the valve seat gasket.

[0013] In this way, the structural design of the valve seat is more reasonable. By designing the valve seat gasket, better sealing can be achieved, and the end face of the valve seat can also be protected.

[0014] As an optimization, the inner hole of the valve seat includes a front fitting hole section arranged in a conical hole and a rear connecting hole section connected to the medium channel; and a circular fitting convex edge with an overall conical structure design protrudes from the inner peripheral wall of the front end of the fitting hole section and is used for fitting with the outer peripheral surface of the valve core.

[0015] In this way, the structural design of the valve seat is more reasonable, and it can better cooperate with the valve core for sealing.

[0016] As an optimization, the valve rod includes an upper valve rod arranged vertically upward. An upper valve rod connection hole is arranged at the upper end of the valve core, and the lower end of the upper valve rod is inserted and fitted in the upper valve rod connection hole; a relief hole is arranged on the valve body opposite to the upper valve rod for the upper valve rod to pass through to the outside, and a sealing structure is arranged between the relief hole and the upper valve rod; an installation support plate arranged horizontally is arranged on the upper side of the valve body. Connecting support plates are bent and extended downward from both sides of the installation support plate respectively and are connected and fixed to both sides of the valve body respectively; the actuator is installed on the installation support plate, and the working end of the actuator passes through the through hole on the installation support plate and is connected to the upper end of the upper valve rod.

[0017] In this way, the overall structure design is more reasonable, and it is more convenient to disassemble and assemble the actuator part.

[0018] As an optimization, the valve stem includes a lower valve stem arranged vertically downward. A lower valve stem connection hole is provided at the lower end of the valve core, and the upper end of the lower valve stem is inserted and fitted into the lower valve stem connection hole. A bottom cover opening is provided on the lower valve body and is opposite to the lower valve stem. A bottom cover is installed on the bottom cover opening, and a sealing is provided between the bottom cover and the bottom cover opening through an O-ring and a gasket. An installation hole is provided on the bottom cover, and the lower end of the lower valve stem is installed in the installation hole. A lower valve stem bushing is provided between the lower valve stem and the installation hole, and a lower valve stem wear-resistant gasket is provided between the lower end face of the lower valve stem and the bottom face of the installation hole.

[0019] In this way, it is more convenient to disassemble and assemble the bottom cover and the lower valve stem, and the bottom cover can be better protected.

[0020] As an optimization, an upper balance hole is provided on the bottom face of the upper valve stem connection hole, and a lower balance hole is provided on the bottom face of the lower valve stem connection hole, and the lower end of the upper balance hole and the upper end of the lower balance hole are respectively communicated with the connection through hole.

[0021] In this way, by designing the upper balance hole and the lower balance hole, the inner cavity pressure can be balanced, and after long-term operation, the torque can be better maintained unchanged.

[0022] As an optimization, an installation cylinder is provided in the relief hole. An annular installation flange is formed at the upper end of the installation cylinder and is connected to the valve body by screws. A ring of inwardly protruding installation ridges is provided at the lower end of the inner hole of the installation cylinder. An installation shoulder is provided on the upper valve stem corresponding to the lower side of the installation ridge. A valve stem washer is provided between the installation shoulder and the installation ridge. An upper valve stem bushing is also sleeved on the upper valve stem, and the lower end of the upper valve stem bushing abuts against the upper side surface of the installation ridge. The sealing structure includes an O-ring and a sealing washer provided between the outer peripheral surface of the installation cylinder and the inner peripheral surface of the relief hole. It also includes a packing gasket, a lower packing, a middle packing, an upper packing, and a packing gland ring stacked in sequence above the upper valve stem bushing. A packing pressing plate is also provided above the packing gland ring. And the packing pressing plate is connected to the installation flange by screws.

[0023] In this way, the upper valve stem part can be disassembled, assembled and maintained as a whole. And the sealing structure is more reliable.

[0024] In summary, in the above-mentioned direct-through hydrogen energy ball valve structure, through the designed valve seat spring, the wear formed by the rotation of the valve seat and the valve core can be compensated, and the reliability of the direct-through hydrogen energy ball valve during operation can be maintained. The upper valve stem part can be regarded as a whole, which is convenient for disassembly, assembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the structure of a direct-through hydrogen energy ball valve in a specific embodiment of the present utility model.

[0026] Figure 2 It is Figure 1 a schematic diagram of the structure after rotating by an angle.

[0027] Figure 3 It is Figure 1 the front view of

[0028] Figure 4 It is Figure 1 the left view of

[0029] Figure 5 It is Figure 4 the A-A sectional view of (the actuator is omitted in the figure).

[0030] Figure 6 It is Figure 5 a partial enlarged view of position B in

[0031] Figure 7 It is Figure 5 a partial enlarged view of position C in

[0032] Figure 8 It is Figure 5 a partial enlarged view of position D in Specific Embodiment

[0033] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific manner, and therefore cannot be construed as a limitation to the present utility model. Terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] For example, as Figures 1 to 8As shown in the figure, a structure of a direct-through hydrogen energy ball valve includes a valve body 1. There is an installation cavity 3 inside the valve body. Medium channels 2 are provided at both ends of the valve body and penetrate the installation cavity respectively. Valve seats 4 are installed at both ends of the installation cavity. A valve core 5 is installed between the two valve seats in the installation cavity through a valve rod. The valve core has a connecting through hole 6 horizontally penetrating it and can connect the two medium channels. An actuator 7 is provided above the valve body. The driving end of the actuator is connected to the valve rod and can drive the valve core to rotate so that the two medium channels are disconnected. Its characteristic lies in that a valve seat spring 8 is arranged between the valve body and the valve seat, and the valve seat spring can push the valve seat to have a tendency to move horizontally towards the valve core.

[0035] In this way, in the above-mentioned structure of the direct-through hydrogen energy ball valve, through the valve seat spring arranged between the valve body and the valve seat, during the working process of the direct-through hydrogen energy ball valve, the gap generated by the mutual rotation and friction between the valve seat and the valve core can be compensated, so that the working reliability can be better maintained.

[0036] In this specific embodiment, the installation cavity includes installation hole sections at both ends. The diameter of the installation hole sections is larger than that of the medium channels. The valve seats are arranged in the installation hole sections, and the valve seat spring is arranged between the stepped surface at the outer end of the installation hole section and the valve seat.

[0037] In this way, by forming installation hole sections at both ends of the installation cavity, it is more convenient to install and arrange the valve seats and the valve seat spring, and the structural design is more compact and reasonable.

[0038] In this specific embodiment, a circular fitting groove 9 is arranged on the stepped surface at the outer end of the installation hole section, and the end of the valve seat spring is fitted in the fitting groove.

[0039] In this way, by designing the fitting groove, the correct position of the valve seat spring can be better guaranteed.

[0040] In this specific embodiment, the valve seat includes a front valve seat section, a middle valve seat section and a rear valve seat section. The diameters of the front valve seat section, the middle valve seat section and the rear valve seat section are sequentially reduced. An O-ring is arranged between the outer periphery of the middle valve seat section and the inner peripheral wall of the installation hole section. A valve seat gasket 10 is arranged on the stepped surface formed between the rear valve seat section and the middle valve seat section. The surface of the valve seat gasket has an abutting protrusion 11 protruding towards the O-ring and abuts and supports on the O-ring. One end of the valve seat spring abuts and supports on the valve seat gasket.

[0041] In this way, the structural design of the valve seat is more reasonable. By designing the valve seat gasket, better sealing can be achieved, and the end face of the valve seat can also be protected.

[0042] In this specific embodiment, the inner hole of the valve seat includes a mating hole section at the front end that is arranged as a tapered hole and a connecting hole section at the rear end that is connected to the medium passage; and a mating convex edge 12 that is integrally designed in a tapered structure is protrudingly arranged on the inner peripheral wall at the front end of the mating hole section and is used for mating with the outer peripheral surface of the valve core.

[0043] In this way, the structural design of the valve seat is more reasonable, and it can better cooperate with the valve core for sealing.

[0044] In this specific embodiment, the valve stem includes an upper valve stem 13 arranged vertically upward. An upper valve stem connection hole is provided at the upper end of the valve core, and the lower end of the upper valve stem is inserted and fitted into the upper valve stem connection hole; a relief hole is provided on the valve body opposite to the upper valve stem for the upper valve stem to pass through to the outside, and a sealing structure is provided between the relief hole and the upper valve stem; an installation support plate 14 arranged horizontally is provided on the upper side of the valve body. Both sides of the installation support plate are bent downward and extended to form connection support plates 15, and the connection support plates are respectively connected and fixed to both sides of the valve body; the actuator is installed on the installation support plate, and the working end of the actuator passes through the through hole on the installation support plate and is connected to the upper end of the upper valve stem.

[0045] In this way, the overall structural design is more reasonable, and it is more convenient to disassemble and assemble the actuator part.

[0046] In this specific embodiment, the valve stem includes a lower valve stem 16 arranged vertically downward. A lower valve stem connection hole is provided at the lower end of the valve core, and the upper end of the lower valve stem is inserted and fitted into the lower valve stem connection hole; a bottom cover opening is provided on the lower valve body opposite to the lower valve stem, and a bottom cover 17 is installed on the bottom cover opening. The bottom cover and the bottom cover opening are sealed by an O-ring and a gasket; an installation hole is provided on the bottom cover, and the lower end of the lower valve stem is installed in the installation hole; and a lower valve stem bushing 18 is provided between the lower valve stem and the installation hole, and a lower valve stem wear-resistant gasket 19 is provided between the lower end surface of the lower valve stem and the bottom surface of the installation hole.

[0047] In this way, it is more convenient to disassemble and assemble the bottom cover and the lower valve stem, and the bottom cover can be better protected.

[0048] In this specific embodiment, an upper balance hole 20 is provided on the bottom surface of the upper valve stem connection hole, a lower balance hole 21 is provided on the bottom surface of the lower valve stem connection hole, and the lower end of the upper balance hole and the upper end of the lower balance hole are respectively communicated with the connection through hole.

[0049] In this way, by designing the upper balance hole and the lower balance hole, the internal cavity pressure can be balanced, and after long-term operation, the torque can be better maintained unchanged.

[0050] In this specific embodiment, an installation cylinder 22 is arranged in the relief hole. An annular installation flange is formed at the upper end of the installation cylinder and is connected to the valve body by screws. An installation convex edge 23 protruding inwards is arranged at the lower end of the inner hole of the installation cylinder. An installation shoulder 24 is arranged on the upper valve stem corresponding to the lower side of the installation convex edge. A valve stem washer 25 is arranged between the installation shoulder and the installation convex edge. An upper valve stem bushing 26 is also sleeved on the upper valve stem, and the lower end of the upper valve stem bushing abuts against the upper side surface of the installation convex edge. The sealing structure includes an O-ring and a sealing washer arranged between the outer peripheral surface of the installation cylinder and the inner peripheral surface of the relief hole. It also includes a packing gasket 27, a lower packing 28, a middle packing 29, an upper packing 30, and a packing gland 31 stacked in sequence above the upper valve stem bushing. A packing plate 32 is also arranged above the packing gland. The packing plate is connected to the installation flange by screws.

[0051] In this way, the upper valve stem part can be disassembled, assembled and maintained as a whole. And the sealing structure is more reliable.

[0052] To sum up, in the above-mentioned direct-through hydrogen energy ball valve structure, through the designed valve seat spring, the wear formed by the rotation of the valve seat and the valve core can be compensated, and the reliability of the operation of the direct-through hydrogen energy ball valve can be maintained. The upper valve stem part can be regarded as a whole, which is convenient for disassembly, assembly and maintenance.

[0053] In this way, the sealing effect between the valve cover and the vertical hole on the valve cover is better, and leakage can be better avoided.

[0054] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A straight-through hydrogen energy ball valve structure, comprising a valve body, an installation cavity inside the valve body, and medium channels are provided at both ends of the valve body and each is directly opposite to the installation cavity; valve seats are respectively installed at both ends of the installation cavity, and a valve core is installed between the two valve seats in the installation cavity through a valve stem; a connecting through hole is provided on the valve core horizontally through and can connect the two medium channels; an actuator is provided above the valve body, and the driving end of the actuator is connected to the valve stem and can drive the valve core to rotate so that the two medium channels are disconnected; characterized in that A valve seat spring is arranged between the valve body and the valve seat, and the valve seat spring is capable of pushing the valve seat to have a tendency to move horizontally toward the valve core; The installation cavity comprises installation hole sections at both ends, the diameter of the installation hole sections is larger than the diameter of the medium channel; the valve seat is arranged in the installation hole section, and the valve seat spring is arranged between the step surface at the outer end of the installation hole section and the valve seat; The valve seat comprises a front section, a middle section and a rear section of the valve seat; and the diameters of the front section, the middle section and the rear section of the valve seat are arranged to decrease in sequence; an O-ring is arranged between the outside of the middle section of the valve seat and the inner circumferential wall of the mounting hole section; a valve seat gasket is arranged on the step surface formed between the rear section and the middle section of the valve seat, and the surface of the valve seat gasket has an abutting protrusion protruding toward the O-ring and abutting and supporting on the O-ring; and one end of the valve seat spring abuts and supports on the valve seat gasket.

2. A straight-through hydrogen energy ball valve structure as claimed in claim 1, characterized in that: A circle of annular matching groove is arranged on the step surface at the outer end of the installation hole section, and the end of the valve seat spring is matched and arranged in the matching groove.

3. A straight-through hydrogen energy ball valve structure as claimed in claim 1, characterized in that: The inner hole of the valve seat includes a matching hole section with a tapered hole at the front end and a connecting hole section at the rear end connected to the medium channel; and a circle of matching convex edges with an overall tapered structure design are protruded on the inner peripheral wall at the front end of the matching hole section and are used to match the outer peripheral surface of the valve core.

4. A straight-through hydrogen energy ball valve structure as claimed in claim 1, characterized in that: The valve stem includes an upper valve stem arranged vertically upward, an upper valve stem connecting hole is arranged on the upper end of the valve core, and the lower end of the upper valve stem is inserted and fitted in the upper valve stem connecting hole; a clearance hole is arranged on the valve body and directly opposite to the upper valve stem so that the upper valve stem can pass through to the outside, and a sealing structure is arranged between the clearance hole and the upper valve stem; a horizontally arranged mounting support plate is arranged on the upper side of the valve body, and both sides of the mounting support plate are bent downward and extended to form a connecting support plate and are respectively connected and fixed on both sides of the valve body; the actuator is installed on the mounting support plate, and the working end of the actuator passes through the through hole on the mounting support plate and is connected to the upper end of the upper valve stem.

5. A straight-through hydrogen energy ball valve structure as claimed in claim 4, characterized in that: The valve stem includes a lower valve stem arranged vertically downward, a lower valve stem connecting hole is arranged at the lower end of the valve core, and the upper end of the lower valve stem is inserted and fitted in the lower valve stem connecting hole; a bottom cover opening is arranged on the lower valve body and directly opposite to the lower valve stem, a bottom cover is installed on the bottom cover opening, and the bottom cover and the bottom cover opening are sealed by an O-ring and a sealing gasket; a mounting hole is arranged on the bottom cover, and the lower end of the lower valve stem is installed in the mounting hole; and a lower valve stem sleeve is arranged between the lower valve stem and the mounting hole, and a lower valve stem anti-wear gasket is arranged between the lower end surface of the lower valve stem and the bottom surface of the mounting hole.

6. A straight-through hydrogen energy ball valve structure as claimed in claim 5, characterized in that: An upper balancing hole is arranged on the bottom surface of the upper valve stem connecting hole, and a lower balancing hole is arranged on the bottom surface of the lower valve stem connecting hole, and the lower end of the upper balancing hole and the upper end of the lower balancing hole are respectively connected to the connecting through hole.

7. A straight-through hydrogen energy ball valve structure as claimed in claim 6, characterized in that: A mounting tube is arranged in the clearance hole, and a circle of annular mounting flange is formed on the upper end of the mounting tube and is arranged on the valve body by screw connection; a circle of mounting flange protruding inward is arranged at the lower end of the inner hole of the mounting tube, and a mounting shaft shoulder is arranged on the upper valve stem and corresponding to the lower part of the mounting flange, and a valve stem gasket is arranged between the mounting shaft shoulder and the mounting flange; an upper valve stem shaft sleeve is also sleeved on the upper valve stem, and the lower end of the upper valve stem shaft sleeve is abutted against the upper side surface of the mounting flange; the sealing structure includes an O-ring and a sealing gasket arranged between the outer circumference of the mounting tube and the inner circumference of the clearance hole; it also includes a packing gasket, a lower packing, a middle packing, an upper packing and a packing pressure ring which are stacked in sequence above the upper valve stem shaft sleeve; a packing pressure plate is also arranged above the packing pressure ring; and the packing pressure plate is connected to the mounting flange by screws.

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