Clamp connection type high-temperature-resistant corrugated pipe stop valve

A corrugated tube stop valve, connected technology, applied in the field of stop valves, achieves the effects of simple structure, improved factory equipment safety, and reasonable product structure

Inactive Publication Date: 2009-12-09
SHANGHAI HAIXING VALVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the shut-off valve is forced to seal, when the valve is closed, pressure must be applied to th

Method used

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  • Clamp connection type high-temperature-resistant corrugated pipe stop valve

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0008] In the figure: 1. Clamp-connected valve body, 2. Overlay welding Co-based hard alloy sealing ring, 3. Titanium-plated austenitic stainless steel double bellows device, 4. Valve stem, 5. High temperature resistant gasket, 6. Bolt, 7. Spring washer, 8. Nut, 9. Jack screw, 10. Jack nut, 11. Bonnet, 12. Stem nut, 13. Handwheel, 14. Stem nut fastening nut, 15 .Key, 16. Packing gland, 17. Packing, 18. Lower packing pad, 19. Clamp fastening bolt, 20. Spring washer, 21. Clamp assembly, 22. External pipe, 23. Sealing ring.

[0009] exist figure 1 In the example shown: Co-based hard alloy sealing ring 2 is surfacing welded on the clamp-connected valve body 1, and Co-based hard alloy is surfacing welded on the sealing surface, which has good wear resistance, corrosion resistance, anti-friction performance, and long service life. Titanium-plated austenitic...

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Abstract

The invention provides a clamp connection type high-temperature-resistant corrugated pipe stop valve and relates to a stop valve. The clamp connection type high-temperature-resistant corrugated pipe stop valve comprises a clamp connection type valve body, wherein a Co-based hard alloy sealing ring is resurfaced and welded on the valve body. A titanizing austenitic stainless steel dual-corrugated-pipe device is movably and mechanically connected below a valve rod, and a handwheel is rotated to enable a lifting rod of the valve rod to drive the titanizing austenitic stainless steel dual-corrugated-pipe device to lift by a valve rod nut. The dual firm and durable corrugated pipes are convenient to disassemble, the clamp connection is convenient to disassemble, and an exterior connection pipe and the sealing ring screw down a clamp component by a clamp fastening bolt through a spring shim so as to enable a pipeline to be rapidly sealed and connected. The clamp connection type high-temperature-resistant corrugated pipe stop valve is suitable for switching off or switching on pipeline media on pipelines with various working conditions in the petroleum industry, the pharmaceutical industry, the chemical fertilizer industry, and the like.

Description

Technical field: [0001] The invention relates to a cut-off valve. Background technique: [0002] At present, in the known stop valve, the opening and closing part of the stop valve is a plug-shaped valve disc, the sealing surface is a plane or a conical surface, and the valve disc moves linearly along the center line of the fluid. The movement type of the valve stem has a lifting rod type. The stop valve is only suitable for full opening and full closing, and adjustment and throttling are not allowed. It is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. When the medium enters the valve from the bottom of the disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of th...

Claims

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Application Information

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IPC IPC(8): F16K41/10F16K1/34F16K1/46F16K27/02F16K41/02F16K31/60
Inventor 季祝华
Owner SHANGHAI HAIXING VALVE FACTORY
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