CN203477430U - Pressure maintaining plug valve - Google Patents
Pressure maintaining plug valve Download PDFInfo
- Publication number
- CN203477430U CN203477430U CN201320460948.6U CN201320460948U CN203477430U CN 203477430 U CN203477430 U CN 203477430U CN 201320460948 U CN201320460948 U CN 201320460948U CN 203477430 U CN203477430 U CN 203477430U
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- CN
- China
- Prior art keywords
- cock
- plug
- valve
- valve body
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a pressure maintaining plug valve which comprises valve body, a bushing and a plug cock arranged inside the valve body, a valve rod fixedly connected with the plug cock, a handle fixedly connected with the valve rod, and a sealing device arranged among the valve body, the plug cock and the valve rod, wherein the bushing is positioned between the plug cock and the valve body; a pressure releasing hole is formed in the plug cock and communicated with the cavity chamber of the plug cock; the axial line of the pressure releasing hole is perpendicular to the axial line of the flow path opening of the plug cock. According to the utility model, since the pressure releasing hole is formed, once the plug cock is closed, the plug valve can discharge through the pressure releasing hole so as to release pressure in the plug valve to enable the pressure in and out of the plug valve to be balance, the plug valve has the characteristics of simple structure, convenience in operation, security and reliability, and solves the technical problems of potential safety hazards and difficult re-opening existing in the prior art.
Description
Technical field
The utility model relates to a kind of voltage stabilizing stopcock.
Background technique
Stopcock is to make the passway in cock communicate or separate with the passway on valve body by rotation cock, and then a kind of valve of realizing unlatching or closing, the shape of its cock can be cylindrical or conical, and the passage of cylindrical cock is generally rectangular, and the passage of conical cock is trapezoidal.The features such as that the special construction of stopcock makes it have is simple in structure, open and close rapidly, fluid resistance is little, are applicable to cut-out, connection and the shunting of medium, sometimes also can be used for throttling.
With good quality assurance, the operating mode that stopcock uses is more and more extensive, and a lot of chemical projects are also used stopcock to substitute ball valve gradually.When high temperature and high pressure condition is used stopcock, due to medium High Temperature High Pressure, when cock is closed, stopcock inner chamber is full of high-temperature high-pressure medium (gas), and the cooling step-down gradually of ducted medium, thereby cause that stopcock is inner exists large pressure difference with pipeline enclosure, pressure reduction is excessive causes that moment of torsion increases, be difficult to reopen after causing a part of stopcock to be closed.
Model utility content
For solving the problems of the technologies described above, the utility model provides a kind of voltage stabilizing stopcock, with the pressure inside and outside balanced plug valve, avoids cock under high temperature and high pressure condition to be difficult to the situation of opening.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of voltage stabilizing stopcock, comprise valve body, be arranged on lining in described valve body and cock, the valve rod being fixedly connected with described cock, the handle that is fixedly connected with described valve rod, and be arranged at the seal arrangement between described valve body, cock and valve rod, described lining is between described cock and described valve body, in described cock, offer relief hole, described relief hole is communicated with the chamber of described cock, and the axis of described relief hole is vertical with the axis of the runner mouth of described cock.
Pass through technique scheme, the voltage stabilizing stopcock that the utility model provides, by offering relief hole in cock, once cock is closed, stopcock can pass through relief hole exhaust, stopcock internal pressure is discharged and makes stopcock internal and external pressure balance, there is simple in structure, convenient operation and safe and reliable feature, having solved the potential safety hazard that prior art exists and the technical barrier that is difficult to reopen.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described.
Fig. 1 is the cock sectional structure schematic diagram of the disclosed voltage stabilizing stopcock of embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described.
The voltage stabilizing stopcock that the utility model provides, comprise valve body, be arranged on lining in valve body and cock 11, the valve rod being fixedly connected with cock 11, the handle that is fixedly connected with valve rod, and being arranged at the seal arrangement between valve body, cock 11 and valve rod, lining is between cock 11 and valve body; With reference to figure 1, in cock 11, offer relief hole 12, relief hole 12 is communicated with the chamber of cock 11, and the axis of relief hole 12 is vertical with the axis of the runner mouth of cock 11.
Pass through technique scheme, the voltage stabilizing stopcock that the utility model provides, by offering relief hole 12 in cock 11, once cock 11 is closed, stopcock can pass through relief hole 12 exhausts, stopcock internal pressure is discharged and makes stopcock internal and external pressure balance, there is simple in structure, convenient operation and safe and reliable feature, having solved the potential safety hazard that prior art exists and the technical barrier that is difficult to reopen.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of above-described embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (1)
1. a voltage stabilizing stopcock, comprise valve body, be arranged on lining in described valve body and cock, the valve rod being fixedly connected with described cock, the handle that is fixedly connected with described valve rod, and be arranged at the seal arrangement between described valve body, cock and valve rod, described lining is between described cock and described valve body, it is characterized in that, in described cock, offer relief hole, described relief hole is communicated with the chamber of described cock, and the axis of described relief hole is vertical with the axis of the runner mouth of described cock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460948.6U CN203477430U (en) | 2013-07-31 | 2013-07-31 | Pressure maintaining plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320460948.6U CN203477430U (en) | 2013-07-31 | 2013-07-31 | Pressure maintaining plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477430U true CN203477430U (en) | 2014-03-12 |
Family
ID=50225761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320460948.6U Expired - Lifetime CN203477430U (en) | 2013-07-31 | 2013-07-31 | Pressure maintaining plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477430U (en) |
-
2013
- 2013-07-31 CN CN201320460948.6U patent/CN203477430U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |
|
| CX01 | Expiry of patent term |