Safety valve

Abstract

The utility model provides a safety valve which comprises a valve body, an elastic assembly and a valve clack assembly, and the elastic assembly and the valve clack assembly are arranged in the valve body. The valve body comprises a valve seat, the valve clack assembly is arranged above the valve seat, the valve clack assembly comprises a valve clack and a valve rod, the valve clack is made of polyether-ether-ketone and carbon fiber materials, and a sealing surface between the valve seat and the valve clack assembly is a conical surface; the elastic assembly is arranged above the valve clack assembly and used for driving the valve clack assembly to move up and down. According to the safety valve, the valve clack formed by combining the polyether-ether-ketone and the carbon fiber material is adopted, the pressure of the safety valve is stable, the sealing face between the valve seat and the valve clack assembly is arranged to be the conical face, the sealing effect is improved, zero leakage is achieved, and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically to a safety valve. Background Technology

[0002] Safety valves are increasingly used in modern manufacturing engineering technology. The main function of safety valves is to prevent dangerous situations such as explosions or leaks caused by excessive pressure inside equipment or containers.

[0003] As safety valve technology is increasingly applied across various industries, the performance of traditional safety valves is constantly improving, making the development of new safety valve products that meet market demands imperative. Traditional safety valves are divided into two categories: soft-seal and hard-seal.

[0004] The advantage of hard seals is that the opening pressure is relatively stable, but the disadvantages are that it is difficult to achieve zero leakage, and the requirements for operating conditions are high. Once there are even a little bit of pipeline impurities on the sealing surface, the sealing surface will be damaged, and the cost is high.

[0005] The advantage of soft seals is that they can easily achieve zero leakage. However, due to high pressure, the valve disc rubber and plastic are prone to deformation and damage, the pressure is unstable, and there may even be sudden leakage during the pressure holding period, resulting in a large loss of precious gas for customers.

[0006] Therefore, most safety valves on the market use hard seals, which are costly. Although the leakage rate meets leakage standards, it still results in the loss of gas for customers. More and more customers are using precious or even harmful gases such as high-pressure hydrogen and high-pressure helium. In this case, a safety valve with stable pressure and zero leakage is needed to ensure the safety of pressure vessels and pipelines and prevent media leakage. Utility Model Content

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a safety valve that uses a valve disc made of a combination of polyetheretherketone (PEEK) and carbon fiber materials to achieve pressure stability. Furthermore, the sealing surface between the valve seat and the valve disc assembly is set as a conical surface to improve the sealing effect, achieve zero leakage, and reduce costs.

[0008] To achieve the above objectives, according to one aspect of the present invention, a safety valve is provided, comprising: a valve body, an elastic component, and a valve disc assembly, wherein the elastic component and the valve disc assembly are disposed inside the valve body;

[0009] The valve body includes a valve seat, and the valve disc assembly is disposed above the valve seat. The valve disc assembly includes a valve disc and a valve stem. The valve disc is made of polyetheretherketone and carbon fiber materials. The sealing surface between the valve seat and the valve disc assembly is a conical surface.

[0010] The elastic component is disposed above the valve disc assembly, and the elastic component is used to drive the valve disc assembly to move up and down.

[0011] Optionally, the valve body further includes a valve cover and a valve housing, the valve cover being connected to one end of the valve housing, and the other end of the valve housing being connected to the valve seat.

[0012] Optionally, the valve also includes a valve cap gasket disposed between the valve housing and the valve seat, the valve cap gasket being used to seal the connection between the valve housing and the valve seat.

[0013] Optionally, the system also includes steel balls disposed between the valve discs for sealing the valve discs.

[0014] Optionally, the valve disc is disposed inside the valve seat, the valve stem is disposed inside the valve housing and the valve cover, the valve disc is connected to the valve stem, the valve disc is disposed above the valve seat, the valve stem is disposed above the valve disc, and the valve stem is used to move up and down to drive the valve disc to open or close.

[0015] Optionally, the valve may also include a positioning disc disposed between the valve body and the valve cover, the positioning disc being used to position the valve stem.

[0016] Optionally, the system also includes a valve housing gasket disposed between the valve housing and the valve cover, the valve housing gasket being used to seal the connection between the valve housing and the valve cover.

[0017] Optionally, the elastic component includes an elastic part and an elastic part base, the elastic part and the elastic part base being disposed inside the valve housing, and the elastic part being mounted on the elastic part base.

[0018] Optionally, it also includes a valve cap disposed on the valve cover, the valve cap being used to adjust the pressure of the safety valve.

[0019] Optionally, it also includes an adjusting screw and a locking nut, the adjusting screw and the locking nut being disposed inside the valve cover, the locking nut being disposed on the adjusting screw, the adjusting screw and the locking nut being used to adjust the tension of the elastic component.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The above technical solution utilizes a valve disc made of polyetheretherketone (PEEK) and carbon fiber materials, which has high hardness, excellent mechanical properties, heat resistance, and chemical resistance. It also has good load-bearing engagement and a low coefficient of friction, resulting in good mechanical properties and stable pressure in the safety valve. The sealing surface between the valve seat and the valve disc assembly is a conical surface, employing a conical seal to achieve zero leakage, reduce costs, and effectively improve the sealing effect of the hard seal. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of a safety valve provided in an exemplary embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures

[0025] 100 Safety Valve

[0026] 1 Valve body

[0027] 2. Positioning disc

[0028] 3. Valve disc

[0029] 4. Valve stem

[0030] 5 Valve housing gasket

[0031] 6 Valve cap gasket

[0032] 7 Valve seat

[0033] 8 steel balls

[0034] 9 Valve cover

[0035] 10 Flexible component base

[0036] 11. Elastic components

[0037] 12 Adjusting screws

[0038] 13 Valve Cap

[0039] 14 Locking nut Detailed Implementation

[0040] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0041] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description.

[0042] Figure 1 This is a schematic diagram of the overall structure of a safety valve provided in an exemplary embodiment of the present invention.

[0043] This utility model provides a safety valve 100, including: a valve body, an elastic component, and a valve disc assembly, wherein the elastic component and the valve disc assembly are disposed inside the valve body.

[0044] The valve body includes a valve seat 7, and a valve disc assembly is disposed above the valve seat 7. The valve disc assembly includes a valve disc 3 and a valve stem 4. The valve disc 3 is made of polyetheretherketone and carbon fiber materials, and the sealing surface between the valve seat 7 and the valve disc assembly is a conical surface.

[0045] Polyetheretherketone (PEEK) is characterized by its high hardness. Furthermore, when PEEK is combined with carbon fiber, it forms a novel material that is a self-lubricating material. Carbon fiber can improve the mechanical properties and friction performance of PEEK, surpassing those of ordinary metals.

[0046] Furthermore, the valve seat 7 and the valve disc assembly adopt a cone seal sealing method.

[0047] The elastic component is positioned above the valve disc assembly and is used to drive the valve disc assembly to move up and down.

[0048] Through the above technical solution, the valve disc 3, which combines polyether ether ketone and carbon fiber materials, has high hardness, excellent mechanical properties, heat resistance and chemical resistance, as well as good load-bearing engagement and low friction coefficient, and good mechanical properties, thus achieving pressure stability of the safety valve 100; the sealing surface between the valve seat 7 and the valve disc assembly is a conical surface, which adopts conical sealing to achieve zero leakage, reduce costs, and effectively improve the sealing effect of hard seal.

[0049] like Figure 1 As shown, in one possible embodiment, the valve body further includes a valve cover 9 and a valve housing 1, with the valve cover 9 connected to one end of the valve housing 1 and the other end of the valve housing 1 connected to the valve seat 7.

[0050] In one possible embodiment, a safety valve 100 further includes a valve cap gasket 6, which is disposed between the valve housing 1 and the valve seat 7, and is used to seal the connection between the valve housing 1 and the valve seat 7.

[0051] Among them, the valve cap gasket 6 is used to seal the valve seat 7 and the valve seat 7 to prevent media leakage.

[0052] In one possible embodiment, a safety valve 100 further includes steel balls 8 disposed between valve discs 3, the steel balls 8 being used to seal the valve discs 3.

[0053] Among them, the steel ball 8 plays a self-centering role, ensuring that the driving force of the elastic component is applied to the center of the valve disc 3.

[0054] In one possible embodiment, the valve disc 3 is disposed inside the valve seat 7, and the valve stem 4 is disposed inside the valve housing 1 and the valve cover 9. The valve disc 3 is connected to the valve stem 4, and the valve disc 3 is disposed above the valve seat 7. The valve stem 4 is disposed above the valve disc 3, and the valve stem 4 is used to drive the valve disc 3 to open or close by moving up and down.

[0055] Among them, the valve disc 3 assembly is the moving part of the safety valve 100.

[0056] In one possible embodiment, a safety valve 100 further includes a positioning disc 2, which is disposed between the valve body 1 and the valve cover 9. The positioning disc 2 is used to position the valve stem 4. The positioning disc 2 remains stationary for a long period of time.

[0057] In one possible embodiment, a safety valve 100 further includes a valve housing gasket 5 disposed between a valve housing 1 and a valve cover 9, the valve housing gasket 5 being used to seal the connection between the valve housing 1 and the valve cover 9.

[0058] Among them, the valve body gasket 5 is used to prevent the medium from leaking from the connection between the valve body 1 and the valve cover 9.

[0059] In one possible embodiment, the elastic component includes an elastic member 11 and an elastic member base 10, which are disposed inside the valve housing 1, with the elastic member 11 mounted on the elastic member base 10.

[0060] In this invention, the elastic component is the source of force for driving the valve assembly. The elastic component 11 can be a rectangular spring, and the elastic component base 10 can be a spring base. The compression or expansion of the spring provides elastic force, driving the valve assembly to move up and down.

[0061] As an example, when the rectangular spring is compressed, the valve stem 4 moves upward, the valve disc 3 opens, and the valve opens.

[0062] As another example, the rectangular spring extends, the valve stem 4 moves downward, the valve disc 3 closes, and the valve is closed.

[0063] In one possible embodiment, a valve cap 13 is also included, which is disposed on the valve cover 9 and is used to regulate the pressure of the safety valve 100.

[0064] In one possible embodiment, an adjusting screw 12 and a locking nut 14 are also included. The adjusting screw 12 and the locking nut 14 are disposed inside the valve cover 9, and the locking nut 14 is disposed on the adjusting screw 12. The adjusting screw 12 and the locking nut 14 are used to adjust the tension of the elastic component.

[0065] The adjusting screw 12 is the source of force for adjusting the elastic component. When adjusting the elastic component 11, first loosen the locking nut 14. The tension of the elastic component 11 can be adjusted by adjusting the position of the adjusting screw 12. After the elastic component 11 is adjusted, tighten the locking nut 14 to prevent the elastic component 11 from going out of control.

[0066] Therefore, the safety valve 100 provided by this utility model can be applied in high-pressure pipeline environments. Compared with ordinary hard-seal safety valves, it has lower cost, better performance, saves costs, and improves the stability of the safety valve 100 and the sealing effect of the hard seal.

[0067] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. A safety valve, characterized in that, include: The valve body comprises an elastic component and a valve disc assembly, wherein the elastic component and the valve disc assembly are disposed inside the valve body. The valve body includes a valve seat, and the valve disc assembly is disposed above the valve seat. The valve disc assembly includes a valve disc and a valve stem. The valve disc is made of polyetheretherketone and carbon fiber materials. The sealing surface between the valve seat and the valve disc assembly is a conical surface. The elastic component is disposed above the valve disc assembly, and the elastic component is used to drive the valve disc assembly to move up and down.

2. The safety valve according to claim 1, characterized in that, The valve body also includes a valve cover and a valve housing, with the valve cover connected to one end of the valve housing and the other end of the valve housing connected to the valve seat.

3. The safety valve according to claim 2, characterized in that, It also includes a valve cap gasket, which is disposed between the valve body and the valve seat, and is used to seal the connection between the valve body and the valve seat.

4. The safety valve according to claim 1, characterized in that, It also includes steel balls disposed between the valve discs, the steel balls being used to seal the valve discs.

5. The safety valve according to claim 2, characterized in that, The valve disc is disposed inside the valve seat, and the valve stem is disposed inside the valve body and the valve cover. The valve disc is connected to the valve stem. The valve disc is disposed above the valve seat, and the valve stem is disposed above the valve disc. The valve stem is used to move up and down to drive the valve disc to open or close.

6. The safety valve according to claim 2, characterized in that, It also includes a positioning disc, which is disposed between the valve body and the valve cover, and is used to position the valve stem.

7. The safety valve according to claim 2, characterized in that, It also includes a valve housing gasket, which is disposed between the valve housing and the valve cover, and is used to seal the connection between the valve housing and the valve cover.

8. The safety valve according to claim 2, characterized in that, The elastic component includes an elastic part and an elastic part base, the elastic part and the elastic part base are disposed inside the valve housing, and the elastic part is mounted on the elastic part base.

9. The safety valve according to claim 2, characterized in that, It also includes a valve cap, which is disposed on the valve cover and is used to adjust the pressure of the safety valve.

10. The safety valve according to claim 2, characterized in that, It also includes an adjusting screw and a locking nut, which are disposed inside the valve cover. The locking nut is disposed on the adjusting screw and is used to adjust the tension of the elastic component.

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