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Hydraulically driven high temperature resistant bellows gate valve

A technology of hydraulic transmission and bellows, applied in sliding valves, valve details, valve devices, etc., to achieve good anti-corrosion and anti-friction performance, reasonable product structure, and good anti-friction performance

Inactive Publication Date: 2009-07-01
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 gate valve is forced to seal, when the valve is closed, pressure must be applied to the gate to force the sealing surface not to leak. The invention provides a high temperature resistant bellows gate valve with hydraulic transmission.

Method used

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  • Hydraulically driven high temperature resistant bellows gate 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. Valve body, 2. Overlay welding Co-based hard alloy sealing ring, 3. Titanium-plated austenitic stainless steel bellows device, 4. Valve stem, 5. High temperature resistant gasket, 6. Bolt, 7 .Spring washer, 8. Nut, 9. Jack screw, 10. Jack nut, 11 Valve cover, 12. Mandrel sleeve of hydraulic transmission head, 13 Cross bolt, 14. Packing gland, 15. Packing, 16. Bottom packing Pad, 17. Hydraulic transmission head device, 18. Hydraulic transmission head device frame, 19. Bolt, 20. Spring washer, 21. Nut, 22. Hydraulic transmission head mandrel, 23. Gate.

[0009] exist figure 1 In the example shown: the hydraulic transmission head device 17 is mechanically connected with the hydraulic transmission head device frame 18, the hydraulic transmission head device frame 18 and the valve cover 11 are mechanically connected by bolts 19, spr...

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Abstract

A hydraulic drive high-temperature resistance corrugated pipe gate valve, relating to a hydraulic drive gate valve, comprises a valve body, wherein a hydraulic drive head device is mechanically connected with a hydraulic drive head device frame; the hydraulic drive head device frame is mechanically connected with a valve cover through a bolt, a spring gasket and a nut; a hydraulic drive head mandrel; the upper part of a valve rod and a hydraulic drive head mandrel sleeve are mechanically connected through a transverse pin; a Ti-plated austenitic stainless steel corrugated pipe device is movably connected between the lower part of the valve rod and the upper part of a gate plate, the lower part of the valve rod is mechanically connected with the gate plate, the Ti-plated austenitic stainless steel corrugated pipe device is driven to lift through a lifting rod of the valve rod. The hydraulic drive head can be used for automatic controlled pipelines, the flange connection is convenient to be disassembled, and the corrugated pipe with dual-firmness and durability is convenient to be disassembled, the sealing design of the corrugated pipe with dual-firmness and durability guarantees zero leakage of the valve rod. Due to no fluid loss, energy loss is reduced, and the safety of factory equipment is improved.

Description

Technical field: [0001] The invention relates to a hydraulically driven gate valve. Background technique: [0002] At present, in the known gate valve, the opening and closing part of the gate valve is a plug-shaped gate, the sealing surface is a plane or a conical surface, and the gate moves linearly along the center line of the fluid. The movement type of the valve stem has a lifting rod type. The gate 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 gate to force the sealing surface not to leak. When the medium enters the valve from the bottom of the gate, 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...

Claims

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Application Information

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IPC IPC(8): F16K3/02F16K31/12F16K41/10
Inventor 季祝华
Owner SHANGHAI HAIXING VALVE FACTORY
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