CN1594946A - Signal feedback pneumatic super thin type high temperature knife gate valve - Google Patents

Abstract

This invention is related to a hydrodynamic high-temperature reamer gate valve of signal feedback with its side singly sealed. The super-thin compound high-temperature valve gate is paralleled with the input port of the valve groove, and it has light weight and simple materials, and also can be used under the high temperature of <= 700 deg. C, will not influenced by the block of the valve groove, the materials are 1/3 of the original ones, the processing of the parts is much easier, and it achieves the super-thin and high-temperature duration aim. This invention is widely used in the pipelines of the projects of oil field exploration, oil chemistry, coal gas, natural gas, hot electricity, hydraulic power station, steel, tap water, sewage processing, pharmacy and foodstuff for long-distance control of environmental depravation.

Description

The pneumatic ultrathin high temperature disconnecting link valve of signal feed back

The present invention relates to improved valve on a kind of industrial pipeline, be that a kind of type body approaches and the valve of ability≤700 ℃ high temperature liquid, particularly single side face seals the gate valve of lock groove capable of washing, valve on the existing pipeline is as slim pulp stock valve, Parallel Slide Valves, because of rubber packing material ability temperature liquid more than 120 ℃ not, can only limit below 120 ℃ and use: as common gate valve on the market, as residue is arranged in the pipeline, filled up the lock groove, flashboard can not seal.More, wasted a large amount of metals and structural material and man-hour, and influenced the traffic under the pipeline because valve body and flashboard is thick and heavy can not be installed on suspended piping, as a lot of support of essential design is installed.

The objective of the invention is:

Provide a kind of signal feed back pneumatic ultrathin high temperature disconnecting link valve, the single side face sealing, the equal logical super-thin integral High temperature valve of lock groove with inlet, it is not only in light weight, material uses few, and under≤700 ℃ of high-temperature conditions, use, not filled in because of the lock groove influences sealability.

Task of the present invention is that following mode is finished:

The pneumatic ultrathin high temperature disconnecting link valve of a kind of signal feed back, it is characterized in that the pneumatic suction port of signal feed back, fastening piece connection group mechanical connections such as signal feedback device signal feed back shelf and screw, Pneumatic actuator, piston head, lateral pin, lifting bar, form Pneumatic power elevator apparatus, the valve thin type integralization is by the dewax precision casting, sealing surface is made the slightly-inclined face, exotic materials such as built-up welding stainless steel or cemented carbide, one-sided sealing surface, and another side lock groove communicates with the inlet bore, make uniform spacing lug in the valve body, can decide flashboard and seal ring coupling, residue is discharged, flashboard is realized sealing with the even mutually material of rigid material also built-up welding and sealing surface through grinding, reach required sealing load, standard-sized sheet is with the anti-conical surface seal of valve rod when work in the sealing of going up of gate valve, and opening process sealing at ordinary times is by embedding valve body filler copper sheet, the realization of bag high temperature wires graphite asbestos packing.

Using method of the present invention is exchanged and is installed lightly, material has only former same model gate valve 1/3 when the example structure that describes in detail below adopting, part processing is simpler, reaches the purpose of slim high temperature resistant liquid, is widely used in: petrochemical industry, coal gas, rock gas, thermoelectricity, iron and steel, pharmacy is on the abominable distant control pipeline of the environment of engineerings such as food.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is the longitudinal sectional drawing of a kind of concrete structure of the present invention.With reference to Fig. 1 by pneumatic suction port (1), signal feedback device (21), fastening piece connection groups (22) such as signal feed back shelf and screw, Pneumatic actuator (2), piston head (3), lateral pin (4), lifting bar (5), form Pneumatic power elevator apparatus, by bolt (9), bullet pad (6), plain cushion (10) is installed on the medium-height trestle (15), connecing flashboard (18) under the lifting bar (5) joins fixing by living, when Pneumatic actuator (2), lifting thereupon during one driving flashboard (18), Gland (11) hooks medium-height trestle (15) opposite side groove nut (7) bullet pad with the bedding and padding circle by bolt (12), plain cushion (8) presses high temperature resistant filler (13), (14) making filler act on flashboard (18) at medium-height trestle caulking groove and Gland can lifting and unlikely seepage, medium-height trestle (15) is installed on the valve body (20), by bolt, the bullet pad, plain cushion (16) is installed, seal with refractory metal wave mode pad (17) between medium-height trestle (15) and the valve body (20), medium-height trestle (15) is gone up sealing contacting point built-up welding corrosion-resistant metal materials with valve rod (5), in guide pad (19) the double as stiffening rib built-up welding in the valve body (20) with the flashboard same material, uniform flowing medium importer, residue is cleared up well, seal ring also built-up welding and flashboard sealing surface same material (stainless steel or cemented carbide) is finish-machined to slightly-inclined face and flashboard (18) mountain rigid material at circumferential sealing position built-up welding stainless steel or cemented carbide, idol is ground and is formed mutually, reaches sealing function.

Claims (1)

1. The pneumatic ultrathin high temperature disconnecting link valve of a kind of signal feed back, it is characterized in that the pneumatic suction port of signal feed back, fastening piece connection group mechanical connections such as signal feedback device signal feed back shelf and screw, Pneumatic actuator, piston head, lateral pin, the lifting bar mechanical connection is formed Pneumatic power elevator apparatus, sealing surface is made the slightly-inclined face, exotic materials such as built-up welding stainless steel or cemented carbide, one-sided sealing surface, and another side lock groove communicates with the inlet bore, make uniform spacing lug in the valve body, can decide flashboard and seal ring coupling, residue is discharged, flashboard with rigid material also built-up welding and sealing surface mutually the material of idol through grinding, gate valve go up the anti-conical surface seal of sealing, embed valve body filler copper sheet bag high temperature wires graphite asbestos packing and realize.

Images