CN201461996U

CN201461996U - Special spraying and blowing type coal gas butterfly valve

Info

Publication number: CN201461996U
Application number: CN2009200977073U
Authority: CN
Inventors: 陈少平; 黄玉寿; 郭久泰
Original assignee: Tianjin Tanggu Jinbin Valve Co Ltd
Current assignee: Tianjin Tanggu Jinbin Valve Co Ltd
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2010-05-12
Anticipated expiration: 2019-07-10

Abstract

The utility model relates to a special spraying and blowing type coal gas butterfly valve, which comprises a sealing surface, wherein the sealing surface is formed by sealing a valve body and a valve plate, an annular steam pipe is fixed on the inner wall of the valve body, a plurality of spraying and blowing openings are formed on the pipe wall of the annular steam pipe facing the sealing surface, one port of the annular steam pipe is sealed, and the other port of the annular steam pipe is communicated to the outer wall of the valve body to be connected with a pipe valve. The utility model has the advantages that through the addition of a high-temperature steam spraying and blowing device on the basis of the structure of the existing butterfly valve and through the testing by spraying and blowing tests, the functions of uniformly spraying and blowing high-temperature steam on the sealing surface easy to be blocked for diluting and eliminating coal tar concreted on the sealing surface are realized, and simultaneously, the utility model reaches the design technical index through the pressure resistance and temperature resistance detection. Thereby, the utility model thoroughly solves the problem that the nonstandard closing of a coal gas valve can easily cause the coal gas leakage. Thus, the utility model can meet the high-quality requirement of high sealing performance of the coal gas valve in industries such as metallurgy and the like.

Description

The special-purpose butterfly valve of blowing type coal gas

Technical field

The utility model relates to the valve that uses on the pipeline, relates in particular to a kind of special-purpose butterfly valve of the blowing type coal gas that uses on the gas pipe line of industries such as metallurgy that is applicable to.

Background technique

At present, valve on the metallurgy industry gas pipe line adopts gas gate valve usually, the gas gate valve volume is big, cost is high, keying speed is slow, in use, often occurs solidifying because of the coal tar oil that coal gas produces, stopped up sealing surface, it is not in place to cause gas valve to be closed, and sealing effect is poor, and then causes gas leakage easily, cause potential safety hazard, so that directly influence the normal operation of production procedure.

Summary of the invention

The purpose of this utility model is: solidify because of the coal tar oil that coal gas produces in order to solve the gas gate valve that uses in metallurgy industry, stopped up sealing surface, it is not in place to cause gas valve to be closed, and then causes the problem of gas leakage easily, provides a kind of blowing type coal gas special-purpose butterfly valve especially.The special-purpose butterfly valve of this coal gas takes to increase the technological scheme of the blowing device of high-temperature vapour on existing butterfly valve structure basis, thereby realized high-temperature vapour is evenly jetted to the object that solidifies that is blocked in coal tar oil on the sealing surface easily, the function that is set in the coal tar oil on the sealing surface is dissolved in dilution, thoroughly solved and closed not in placely, caused the problem of gas leakage easily because of gas valve.The special-purpose butterfly valve volume of blowing type coal gas is little, material is economized, cost is low, moment of torsion is little, keying speed fast, good seal, be the most suitable special valve on the industry heavy caliber gas pipe line such as metallurgy.

The technological scheme that the utility model is taked for achieving the above object is: the special-purpose butterfly valve of a kind of blowing type coal gas, comprise the sealing surface that forms by valve body and valve plate sealing, it is characterized in that: on the inwall of described valve body, be fixed with the annular vapor pipe, on the tube wall of the annular vapor pipe of described sealing surface, be provided with several winding-ups mouthful, the annular vapor pipe port closed wherein, another port lead on the outer wall of valve body and are connected with pipe valve.

The beneficial effect that the utility model produced is: by increase the blowing device of high-temperature vapour on existing butterfly valve structure basis, detect through the winding-up test, realized high-temperature vapour is evenly jetted to the sealing surface of easy obstruction, the function that is set in the coal tar oil on the sealing surface is dissolved in dilution, detects the technical order that has all reached design through withstand voltage, heatproof simultaneously.Close not in placely thereby thoroughly solved because of gas valve, cause the problem of gas leakage easily.Therefore, the utility model can satisfy industries such as metallurgy gas valve is had the reliable quality requirements of sealability.

Description of drawings

Fig. 1 is the utility model plan view and as Figure of abstract.

Fig. 2 is the sectional side view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing this practicality newly is described further.

With reference to Fig. 1,2, the utility model comprises the sealing surface 3 that is formed by valve body 1 (sealed base) and valve plate 2 (seal ring) sealing, on the inwall of valve body 1, be fixed with annular vapor pipe 4, on the tube wall of the annular vapor pipe 4 of sealing surface 3, be provided with several winding-ups mouthfuls 5, annular vapor pipe 4 port closed wherein, another port lead on the outer wall of valve body 1 and are connected with pipe valve 6.

Annular steam pipe 4 is installed, in advance towards sealing surface, several pores of processing on relative with sealing surface 3 in other words annular vapor pipe 4 tube walls (winding-up mouthful), on valve body 1, open a through hole, two ports of annular vapor pipe 4, end sealing, an end is open, open port is leant out by through hole from valve body 1 inwall, then annular vapor pipe 4 is welded on the inwall of valve body 1.

With the specification for the DN1400 valve is an example, totally three ten two in the winding-up mouth that evenly is provided with on its annular vapor pipe 4 tube walls, each the winding-up mouthful diameter be 2mm.What annular vapor pipe 4 adopted is annular galvanized pipe withstand voltage, heatproof.What pipe valve 6 adopted is ball valve, and ball valve is introduced high-temperature vapour, about 150 ℃ of the temperature of steam as the suction port of steam from suction port.

High-temperature vapour enters the annular vapor pipe by the suction port of pipe valve, under the vapor tension of 3-4kg, high-temperature vapour is from several winding-ups mouthful ejection, evenly jet to sealing surface, the coal tar oil that solidifies on the sealing surface is jetted through high-temperature vapour, promptly by the solid-state liquid state that become, close not in placely thereby thoroughly solved because of gas valve, cause the problem of gas leakage easily.

Claims

1. the special-purpose butterfly valve of a blowing type coal gas, comprise the sealing surface (3) that forms by valve body (1) and valve plate (2) sealing, it is characterized in that: on the inwall of described valve body (1), be fixed with annular vapor pipe (4), on the tube wall of the annular vapor pipe (4) of described sealing surface (3), be provided with several winding-ups mouthful (5), a port closed of annular vapor pipe (4) wherein, another port lead on the outer wall of valve body (1) and are connected with pipe valve (6).