Medium-pressure soft sealing hydrogen energy ball valve structure

Abstract

The utility model relates to the technical field of valves, in particular to a medium-pressure soft sealing hydrogen energy ball valve structure which comprises a valve body, a mounting cavity is formed in the valve body, and medium channels are arranged at the two ends of the valve body and directly face the mounting 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. The valve seat is made of RTFE materials, and after the valve seat is matched with the valve element, the valve seat has deformation capacity and can be attached to the surface of the valve element in a sealed mode. The utility model has the characteristics that the structural design is simpler and more reasonable, the sealing effect can be better improved, and the processing and the manufacturing are more convenient.

Description

Technical Field

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

[0002] Ball valves are mainly used for cutting, distributing and changing the flow direction of the medium 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 vehicle-mounted hydrogen storage / supply systems, fuel cell power systems, and hydrogen production, storage, transportation and refueling systems.

[0003] During the process of hydrogen energy transportation, a medium-pressure ball valve (working pressure: CL1500) is used to complete the transportation and cutting of hydrogen energy in the pipeline. However, in the existing ball valve structure, the seat and the spool usually adopt line contact sealing or surface contact sealing. The line contact sealing between the seat and the spool has the disadvantages of small sealing area and poor reliability. In the surface contact sealing between the seat and the spool, once the seat or the spool is worn, the sealing effect will drop severely. Secondly, the existing ball valve structure usually adopts an integral valve body structure, resulting in difficult processing and manufacturing. Summary of the Utility Model

[0004] 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 medium-pressure soft-sealing hydrogen energy ball valve structure with a simpler and more reasonable structural design, which can better improve the sealing effect and is more convenient for processing and manufacturing.

[0005] To achieve the above object, the utility model provides a medium-pressure soft-sealing hydrogen energy ball valve structure, which includes a valve body. The valve body has an installation cavity inside. At both ends of the valve body and respectively facing the installation cavity, there are through media channels. At both ends of the installation cavity, valve seats are respectively installed. Between the two valve seats in the installation cavity, a spool is installed through a valve rod. The spool has a horizontally penetrating connection through-hole and can connect the two media channels. An actuator is provided above the valve body. The driving end of the actuator is connected to the valve rod and can drive the spool to rotate so that the two media channels are disconnected. It is characterized in that the valve seat is made of RTFE material, and after the valve seat is matched with the spool, the valve seat has a deformation ability and can be sealed against the surface of the spool by sticking.

[0006] In this way, in the above-mentioned medium-pressure soft-sealing hydrogen energy ball valve structure, by making the valve seat of RTFE material, during the working process of the valve seat and the spool, the valve seat can have better deformation ability and can better wrap around the outside of the spool to form surface contact sealing, so that the sealing effect and sealing reliability between the valve seat and the spool are higher.

[0007] As an optimization, the valve body includes a left valve body and a right valve body that are connected and fixed together; a mating cavity is provided on the left end face of the right valve body; the right end of the left valve body has a mating section that protrudes and is inserted into the mating cavity, and a gasket and an O-ring are provided between the outer peripheral surface of the mating section and the inner peripheral surface of the mating cavity for sealing; an engagement cavity is provided on the end face of the mating section, and the valve seats are respectively arranged on the inner bottom surfaces of the engagement cavity and the mating cavity, and the mating cavity and the engagement cavity together form the installation cavity; a medium passage is provided on each of the left valve body and the right valve body and is respectively communicated with the engagement cavity and the mating cavity.

[0008] In this way, the valve body is designed as a left valve body and a right valve body that are independently designed, the structural design is more simple and reasonable, and the processing difficulty of the valve body can also be reduced, making it more convenient for processing and manufacturing.

[0009] As an optimization, a plurality of connecting screws are threadedly connected and arranged on the left end face of the right valve body at intervals in the circumferential direction. The connecting screws respectively pass through the relief holes on the left valve body to the outside, and locking nuts are provided at the left ends of the connecting screws.

[0010] In this way, the connection between the left valve body and the right valve body is simpler, making it more convenient to disassemble and assemble the two.

[0011] As an optimization, disc springs are respectively provided between the bottom surface of the engagement cavity and the valve seat and between the bottom surface of the mating cavity and the valve seat.

[0012] In this way, by providing the disc springs, during the working process, the gaps 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.

[0013] As an optimization, the valve stem includes an upper valve stem 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 right 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 is horizontally arranged 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 and 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.

[0014] In this way, the overall structural design is more reasonable, making it more convenient to disassemble and assemble the actuator part.

[0015] As an optimization, the lower end of the valve core has a downward protruding lower installation convex block, and a mating hole is formed between the mating section and the right valve body. The lower installation block is fitted in the mating hole; and a self-lubricating bearing sleeve is provided between the mating hole and the lower installation convex block.

[0016] In this way, the installation and arrangement at the lower end of the valve core can be made more convenient, and a self-lubricating bearing sleeve is provided, which can better play a protective role.

[0017] As an optimization, the upper end of the valve core has an upwardly protruding upper installation bump, and the upper valve stem connection hole is provided on the upper installation bump, and a self-lubricating bearing sleeve is provided between the upper valve stem connection hole and the upper valve stem.

[0018] In this way, the structural design of the valve core is more reasonable, and it can be more convenient to connect with the upper valve stem.

[0019] As an optimization, an upper balance hole is provided on the bottom surface of the upper valve stem connection hole, and the lower end of the upper balance hole is communicated with the connection through hole.

[0020] In this way, by designing the upper balance hole, the internal cavity pressure can be balanced, and after long-term operation, the torque can also be better maintained unchanged.

[0021] As an optimization, an installation cylinder is provided in the relief hole, and an O-ring seal and a gasket are provided between the outer peripheral surface of the installation cylinder and the inner peripheral surface of the relief hole; a circular installation flange is formed at the upper end of the installation cylinder and is connected to the right valve body by screws; the inner hole of the installation cylinder includes a lower inner hole section, a middle inner hole section and an upper inner hole section, and the inner diameters of the upper inner hole section and the lower inner hole section are larger than that of the middle inner hole section; the lower end of the upper valve stem has a limit shoulder, and a tapered washer is provided between the step surface formed by the middle inner hole section and the lower inner hole section and the upper surface of the limit shoulder; two O-ring seals are vertically spaced between the inner peripheral surface of the middle inner hole section and the outer peripheral surface of the upper valve stem; and a lower packing, a middle packing, an upper packing and a packing gland are provided above the step surface formed by the middle inner hole section and the upper inner hole section outside the upper valve stem; a disc spring is provided above the installation cylinder and corresponding to the packing gland, and a nut check sleeve is threadedly engaged with the upper end of the upper valve stem, and the lower end of the nut check sleeve abuts and supports on the disc spring.

[0022] In this way, the upper valve stem part can be disassembled, assembled and maintained as a whole. And the sealing structure is more reliable. Brief Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the structure of a medium-pressure soft-sealing hydrogen energy ball valve in a specific embodiment of the present invention.

[0024] Figure 2 is Figure 1 The structural schematic diagram after rotating by an angle.

[0025] Figure 3 is Figure 1 The front view of.

[0026] Figure 4 isFigure 1 Bottom view.

[0027] Figure 5 is Figure 1 Left view.

[0028] Figure 6 is Figure 5 Schematic A - A sectional view (the actuator is omitted in the figure).

[0029] Figure 7 is Figure 6 Partial enlarged schematic view of position B in

[0030] Figure 8 is Figure 6 Partial enlarged schematic view of position C in Detailed implementation mode

[0031] The following further illustrates the present utility model in conjunction with the attached 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 attached drawings. It 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, so it cannot be understood as a limitation to the present utility model. Terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] As Figures 1 to 8 shown, a medium - pressure soft - seal hydrogen - energy ball valve structure includes a valve body 1. There is an installation cavity inside the valve body, and medium channels 2 are respectively and oppositely provided at both ends of the valve body and penetrate through the installation cavity; valve seats 3 are respectively installed at both ends of the installation cavity, and a valve core 4 is installed between the two valve seats in the installation cavity through a valve rod; the valve core has a connecting through - hole horizontally penetrating through it and can connect the two medium channels; an actuator 5 is provided above the valve body, and 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; the valve seat is made of RTFE material, and after the valve seat is matched with the valve core, the valve seat has the ability of deformation and can be closely attached and sealed on the surface of the valve core.

[0033] In this way, in the above - mentioned medium - pressure soft - seal hydrogen - energy ball valve structure, by making the valve seat of RTFE material, during the working process of the valve seat and the valve core, the valve seat can have better deformation ability and can better wrap around the outside of the valve core to form a surface - contact seal, so that the sealing effect and sealing reliability between the valve seat and the valve core are higher.

[0034] In this specific embodiment, the valve body includes a left valve body 6 and a right valve body 7 that are connected and fixed together; a mating cavity is provided on the left end face of the right valve body; the right end of the left valve body has a protruding mating section 8 that is inserted and fitted into the mating cavity, and a gasket and an O-ring are provided between the outer peripheral surface of the mating section and the inner peripheral surface of the mating cavity for sealing; an abutting cavity is provided on the end face of the mating section, and the valve seats are respectively arranged on the inner bottom surfaces of the abutting cavity and the mating cavity, and the mating cavity and the abutting cavity together form the installation cavity; a medium channel is provided on each of the left valve body and the right valve body and is respectively communicated with the abutting cavity and the mating cavity.

[0035] In this way, the valve body is designed as a left valve body and a right valve body that are independently designed, the structural design is simpler and more reasonable, the processing difficulty of the valve body can be reduced, and it is more convenient for processing and manufacturing.

[0036] In this specific embodiment, a plurality of connecting screws 9 are arranged at intervals in the circumferential direction and are threadedly connected to the left end face of the right valve body, and the connecting screws respectively pass through the relief holes on the left valve body to the outside, and a locking nut 10 is provided at the left end of the connecting screw.

[0037] In this way, the connection between the left valve body and the right valve body is simpler, and it is more convenient to disassemble and assemble the two.

[0038] In this specific embodiment, disc springs 11 are respectively provided between the bottom surface of the abutting cavity and the valve seat and between the bottom surface of the mating cavity and the valve seat.

[0039] In this way, by providing the disc springs, during the working process, the gaps 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.

[0040] In this specific embodiment, the valve rod includes an upper valve rod 12 that is vertically upward, and an upper valve rod connection hole is provided at the upper end of the valve core and the lower end of the upper valve rod is inserted and fitted into the upper valve rod connection hole; a relief hole is provided on the right valve body opposite to the upper valve rod for the upper valve rod to pass through to the outside, and a sealing structure is provided between the relief hole and the upper valve rod; an installation support plate 13 is horizontally arranged on the upper side of the valve body, and both sides of the installation support plate are bent downward and extended to form connection support plates 14 and 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 rod.

[0041] In this way, the overall structural design is more reasonable, and it is more convenient to disassemble and assemble the actuator part.

[0042] In this specific embodiment, the lower end of the valve core has a downwardly protruding lower mounting lug 15, and a mating hole is formed between the mating section and the right valve body, and the lower mounting block is fitted in the mating hole; and a self-lubricating bearing sleeve 16 is provided between the mating hole and the lower mounting lug.

[0043] In this way, the installation and arrangement of the lower end of the valve core can be more convenient, and the self-lubricating bearing sleeve is provided, which can better play a protective role.

[0044] In this specific embodiment, the upper end of the valve core has an upwardly protruding upper mounting lug 17, the upper valve stem connection hole is provided on the upper mounting lug, and a self-lubricating bearing sleeve is provided between the upper valve stem connection hole and the upper valve stem.

[0045] In this way, the structural design of the valve core is more reasonable, and it can be more convenient to connect with the upper valve stem.

[0046] In this specific embodiment, an upper balance hole 18 is provided on the bottom surface of the upper valve stem connection hole, and the lower end of the upper balance hole is communicated with the connection through hole.

[0047] In this way, by designing the upper balance hole, the internal cavity pressure can be balanced, and after long-term operation, the torque can also be better maintained unchanged.

[0048] In this specific embodiment, an installation cylinder 19 is provided in the relief hole, and an O-ring and a gasket are provided between the outer peripheral surface of the installation cylinder and the inner peripheral surface of the relief hole; a ring-shaped installation flange 20 is formed at the upper end of the installation cylinder and is connected to the right valve body by screws; the inner hole of the installation cylinder includes a lower inner hole section, a middle inner hole section and an upper inner hole section, and the inner diameters of the upper inner hole section and the lower inner hole section are larger than that of the middle inner hole section; the lower end of the upper valve stem has a limit shoulder 21, and a tapered washer 22 is provided between the stepped surface formed by the middle inner hole section and the lower inner hole section and the upper side surface of the limit shoulder; two O-rings are vertically spaced between the inner peripheral surface of the middle inner hole section and the outer peripheral surface of the upper valve stem; and a lower packing 23, a middle packing 24, an upper packing 25 and a packing gland 26 are provided above the stepped surface formed by the middle inner hole section and the upper inner hole section outside the upper valve stem; a disc spring 27 is provided above the installation cylinder and corresponding to the packing gland, and a nut check sleeve 28 is threadedly fitted at the upper end of the upper valve stem, and the lower end of the nut check sleeve abuts and supports on the disc spring.

[0049] In this way, the upper valve stem part can be disassembled and maintained as a whole. And the sealing structure is more reliable.

[0050] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art shall fall within the protection scope determined by the claims.

Claims

1. A medium-pressure soft-sealed 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 facing 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 horizontally penetrated on the valve core 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, The valve seat is made of RTFE material, and after the valve seat and the valve core are matched, the valve seat has the ability to deform and can be sealed against the surface of the valve core.

2. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 1, characterized in that: The valve body includes a left valve body and a right valve body connected and fixed together; a matching cavity is arranged on the left end surface of the right valve body; the right end of the left valve body has a matching section which is protruding and inserted into the matching cavity, and a sealing gasket and an O-ring are arranged between the outer circumference of the matching section and the inner circumference of the matching cavity for sealing; a connecting cavity is arranged on the end surface of the matching section, and the valve seats are arranged on the bottom surfaces of the connecting cavity and the matching cavity respectively, so that the matching cavity and the connecting cavity jointly form the installation cavity; medium channels are respectively arranged on the left valve body and the right valve body, and are respectively connected with the connecting cavity and the matching cavity.

3. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 2, characterized in that: A plurality of connecting screws spaced apart along the circumferential direction are threadedly connected on the left end face of the right valve body, and the connecting screws respectively pass through the corresponding holes on the left valve body to the outside, and a locking nut is arranged at the left end of the connecting screw.

4. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 2, characterized in that: A butterfly spring is arranged between the bottom surface of the connecting cavity and the valve seat, and between the bottom surface of the matching cavity and the valve seat respectively.

5. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 2, 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 right 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.

6. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 5, characterized in that: The lower end of the valve core is provided with a lower mounting protrusion protruding downward, and a matching hole is formed between the matching section and the right valve body, and the lower mounting protrusion is matched in the matching hole; and a self-lubricating bearing sleeve is arranged between the matching hole and the lower mounting protrusion.

7. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 5, characterized in that: The upper end of the valve core is provided with an upper mounting protrusion protruding upward, the upper valve stem connecting hole is arranged on the upper mounting protrusion, and a self-lubricating bearing sleeve is arranged between the upper valve stem connecting hole and the upper valve stem.

8. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 7, characterized in that: An upper balancing hole is arranged on the bottom surface of the upper valve stem connecting hole, and the lower end of the upper balancing hole is connected to the connecting through hole.

9. A medium-pressure soft-seal hydrogen energy ball valve structure as claimed in claim 5, characterized in that: A mounting tube is arranged in the clearance hole, and an O-ring and a sealing gasket are arranged between the outer circumference of the mounting tube and the inner circumference of the clearance hole; a ring-shaped mounting flange is formed at the upper end of the mounting tube and is arranged on the right valve body through screw connection; the inner hole of the mounting tube includes a lower section of the inner hole, a middle section of the inner hole and an upper section of the inner hole, and the inner diameter of the upper section of the inner hole and the lower section of the inner hole is larger than that between the middle section of the inner hole; the lower end of the upper valve stem has a limiting shoulder, and a conical washer is arranged between the step surface formed by the middle section of the inner hole and the lower section of the inner hole and the upper side surface of the limiting shoulder; two O-rings are arranged vertically at intervals between the inner circumference of the middle section of the inner hole and the outer circumference of the upper valve stem; and a lower packing, a middle packing, an upper packing and a packing pressure ring are arranged above the step surface formed by the middle section of the inner hole and the upper section of the inner hole outside the upper valve stem; a butterfly spring is arranged above the mounting tube and corresponding to the packing pressure ring, and a nut check sleeve is arranged with a threaded fit at the upper end of the upper valve stem, and the lower end of the nut check sleeve is supported on the butterfly spring.

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