High temperature water cooled wear resistant plug valve

Abstract

The utility model provides a kind of high-temperature water-cooled wear-resistant plug valve, including valve body, valve shaft, plug, driving device, upper end cover, the cooling pipe of being equipped with intercommunication inlet I, outlet I is externally equipped with in valve body, inlet II, outlet II are equipped on valve shaft, valve shaft and plug are integrated structure, inlet II, outlet II are equipped with the flow channel of intercommunication in valve shaft and plug, valve body passageway is sprayed with hard alloy. Relative traditional plug valve increases water cooling system, water cooling system is cooled to valve body and valve core and shaft seal respectively, the temperature of valve overall is controlled, avoid temperature rise to cause influence to valve sealing system, improve valve reliability.

Description

Technical Field

[0001] This utility model relates to the field of plug valve technology. Background Technology

[0002] Currently, plug valves mainly achieve sealing by engaging the plug with the valve body cavity and injecting sealing grease. However, under conditions of high medium temperature and wear resistance requirements, the sealing oil will age and the passage wear will intensify. Therefore, due to the limitations of medium temperature and wear, reliable sealing cannot be achieved at high temperatures, and the valve's wear life is also short. Thus, a plug valve with a high-temperature resistant and wear-resistant structure is needed, which can achieve zero leakage and meet the need for high-temperature medium shut-off. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a high-temperature water-cooled wear-resistant plug valve, comprising a valve body, a valve shaft, a plug, a drive device, and an upper end cover. The valve body is provided with a cooling pipe connecting the inlet I and the outlet I. The valve shaft is provided with an inlet II and an outlet II. The valve shaft and the plug are an integral structure. The valve shaft and the plug are provided with a flow channel connecting the inlet II and the outlet II. The valve body channel is coated with hard alloy.

[0004] Preferably, a spring is provided between the upper end cap and the stopcock.

[0005] Preferably, the hardness of the cemented carbide is HRC65 or higher.

[0006] Preferably, the valve body is provided with an oil inlet. Beneficial effects

[0007] Compared to traditional plug valves, a water cooling system is added. The water cooling system cools the valve body, valve core, and shaft seal separately, controlling the overall temperature of the valve and preventing temperature rise from affecting the valve sealing system. The wear-resistant layer treatment of the channel meets the wear resistance requirements of the valve and improves the reliability of the valve. Attached Figure Description

[0008] Figure 1 This is a side view of the present invention; Figure 2 This is a rear view of the present invention.

[0009] In the diagram: 1. Valve body; 2. Inlet I; 3. Plug; 4. Inlet II; 5. Valve shaft; 6. Outlet I; 7. Outlet II; 8. Spring; 9. Upper end cover; 10. Drive unit; 11. Oil inlet. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] See Figure 1-2 A high-temperature water-cooled wear-resistant plug valve is disclosed. A drive device rotates the plug by driving the valve shaft, thus opening and closing the valve. Inlet I injects cooling water into the valve body for cooling, and the cooling water enters the circulation system through outlet I for reuse. Inlet II injects cooling water into the valve shaft and plug for cooling, and the cooling water enters the circulation system through outlet II for reuse. Sealing grease is injected into the plug and valve core through the oil inlet to isolate the medium within the channel. A spring increases the sealing force between the plug and the valve body, enhancing sealing reliability.

[0012] Cooling water cools the valve body and stopcock through inlet I and inlet II, respectively, and cools the valve body, stopcock, and sealing surfaces of the stopcock valve by absorbing heat. The heated cooling water flows out from valve body cooling water outlet I and stopcock cooling water outlet II, respectively, and meets the cooling function for high-temperature media above 800℃.

[0013] The valve passage is coated with hard alloy, which meets HRC65 or higher, to meet the wear resistance requirements of the medium and ensure the service life of the passage.

[0014] When the valve is closed, sealing grease is injected into the sealing pair of the valve body and the plug through the oil injection port. The sealing grease forms a complete sealing band through the groove on the plug, achieving reliable sealing of the medium in the channel and ensuring stable and reliable operation of the system.

[0015] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A high-temperature water-cooled wear-resistant plug valve, comprising a valve body, a valve shaft, a plug, a drive device, and an upper end cover, characterized in that, The valve body is provided with a cooling pipe connecting the inlet I and the outlet I. The valve shaft is provided with an inlet II and an outlet II. The valve shaft and the stopcock are an integral structure. The valve shaft and the stopcock are provided with a flow channel connecting the inlet II and the outlet II. The valve body channel is coated with hard alloy.

2. The high-temperature water-cooled wear-resistant plug valve according to claim 1, characterized in that, A spring is provided between the upper end cap and the stopcock.

3. The high-temperature water-cooled wear-resistant plug valve according to claim 1, characterized in that, The hardness of the cemented carbide reaches HRC65 or higher.

4. A high-temperature water-cooled wear-resistant plug valve according to claim 1, characterized in that, The valve body is equipped with an oil inlet.

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