CN101235919A - Vacuum pump heating interlining pressure release device - Google Patents
Vacuum pump heating interlining pressure release device Download PDFInfo
- Publication number
- CN101235919A CN101235919A CNA2008100176592A CN200810017659A CN101235919A CN 101235919 A CN101235919 A CN 101235919A CN A2008100176592 A CNA2008100176592 A CN A2008100176592A CN 200810017659 A CN200810017659 A CN 200810017659A CN 101235919 A CN101235919 A CN 101235919A
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- Prior art keywords
- valve seat
- valve
- spool
- guide barrel
- vacuum pump
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- 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.)
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Abstract
The invention belongs to a safety accessory of vacuum system devices of refining equipment outside converter of molten steel vacuum steel refining furnace, such as DV furnace, VOD furnace, RH furnace and the like. The invention is characterized by including a guide barrel (1), a valve core (2), a valve seat (3) and a connecting pipe member (4), wherein the lower end port is connected with the valve seat (3), the lower end of the valve seat (3) is connected with the connecting pipe member (4), the guide barrel (1) and the valve seat (3) are communicated with the connecting pipe member (4), a valve port (6) is arranged in the center of the valve seat (3), the valve core (2) is positioned in the guide barrel (1), the valve body of the valve core (2) is disposed in the guide barrel (1), the valve head of the valve core (2) is in seal connection with the valve port (6), the guide barrel (1) which is close to the upper end of the valve seat (3) is provided with a valve seat opening (5). The safety accessory does not need calibration and has a long service life.
Description
Technical field
The invention belongs to the molten steel vacuum refining stove such as VD stove, VOD stove,, the safety attachment of the vacuum system equipment of external refining equipment such as RH stove, particularly a kind of vacuum pump heating interlining pressure release device.
Background technique
In molten steel vacuum refining process, the water-vapour spray vacuum pump system is indispensable nucleus equipment.In the course of the work, when degree of vacuum was lower than 0.61KPa, the vapor (steam) temperature of being come out by first order vacuum pump nozzle ejection was less than 0 ℃, if do not take measures, first order vacuum pump can freeze in a large number and have a strong impact on performances this moment.Common solution is at vacuum pump outer installment heating interlayer, with the water vapour fusing of will freezing.Because the vapour pressure ratio of using is higher, feeding interlayer internal pressure is not enough, is strict with pressure below 0.05MPa, in use causes heating interlayer to damage easily.The way that in the past prevented the heating interlayer overvoltage is to utilize safety valve, and the shortcoming of this method is because the interlayer internal pressure has only 0.05MPa, and safety valve is difficult to set up.Be easy to cause overvoltage or underpressure.
Summary of the invention
The purpose of this invention is to provide a kind of demarcation, vacuum pump heating interlining pressure release device of long service life of not needing.
The object of the present invention is achieved like this, vacuum pump heating interlining pressure release device is characterized in that: it comprises orientation barrel, spool, valve seat, connection pipe fitting, and the lower end mouth of orientation barrel is connected with valve seat, the valve seat lower end is connected with connection pipe fitting, and orientation barrel, valve seat are communicated with connection pipe fitting; Valve port is arranged in the middle of the valve seat, spool in orientation barrel, the valve body that makes spool in orientation barrel, being tightly connected of the valve head of spool and valve port; Orientation barrel near the upper end of valve seat has the valve seat opening.
Advantage of the present invention is: abandoned the thinking of conventional springs formula safety valve fully, gravity safety valve technology has been applied in the native system, and attains the results expected; Because valve seat area and spool weight can strict be controlled, in this device can be controlled at release pressure very among a small circle, adjust accurately.
Description of drawings
The invention will be further described below in conjunction with embodiment's accompanying drawing.
Fig. 1 is an embodiment of the invention structural representation.
Among the figure: 1, orientation barrel; 2, spool; 3, valve seat; 4, connection pipe fitting; 5, valve seat opening; 6, valve port.
Embodiment
As shown in Figure 1, this device comprises orientation barrel 1, spool 2, valve seat 3, connection pipe fitting 4, and the lower end mouth of orientation barrel 1 connects valve seat 3, and valve seat 3 lower ends are connected with connection pipe fitting 4, and orientation barrel 1, valve seat 3 are communicated with connection pipe fitting 4.In the middle of the valve seat 3 valve port 6 is arranged, spool 2 can move down the valve body of spool 2 by gravity in orientation barrel 1 in orientation barrel 1, and the valve head of spool 2 and valve port 6 are tightly connected.Orientation barrel 1 near the upper end of valve seat 3 has valve seat opening 5.This similar gravity type safety valve, the weight of the opening area of valve seat 3 and spool 2 all is to calculate through strict, this device characteristic is that gravity lost efficacy never, after machining, manufactory can directly use at the scene, do not need to demarcate again, also do not need in the using process to demarcate, its failure mode only is the wearing and tearing of spool, and the life-span is long.
Working procedure of the present invention is: connection pipe fitting 4 links to each other with the insulation interlayer at work; Valve seat 3 openings 5 will calculate through accurate, the shape of spool 2 and weight also are to calculate through accurate, in the course of the work, in case insulation interlayer internal pressure surpasses setting value, steam will be pushed spool 2 open in the insulation interlayer, make steam effusion in the insulation interlayer, pressure reduces, when insulation interlayer internal pressure is lower than setting value, because the effect of gravity, spool 2 can be fallen on the valve seat 3 automatically, and it is airtight to be incubated interlayer.Owing to open and close with gravity, spool 2 can not lost efficacy forever by orientation barrel 1 guiding.
Claims (1)
1, vacuum pump heating interlining pressure release device, it is characterized in that: it comprises orientation barrel (1), spool (2), valve seat (3), connection pipe fitting (4), the lower end mouth of orientation barrel (1) is connected with valve seat (3), valve seat (3) lower end is connected with connection pipe fitting (4), and orientation barrel (1), valve seat (3) are communicated with connection pipe fitting (4); In the middle of the valve seat (3) valve port (6) is arranged, spool (2) is in orientation barrel (1), and the valve body that makes spool (2) is in orientation barrel (1), and the valve head of spool (2) and valve port (6) are tightly connected; Orientation barrel (1) near the upper end of valve seat (3) has valve seat opening (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100176592A CN101235919A (en) | 2008-03-07 | 2008-03-07 | Vacuum pump heating interlining pressure release device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100176592A CN101235919A (en) | 2008-03-07 | 2008-03-07 | Vacuum pump heating interlining pressure release device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101235919A true CN101235919A (en) | 2008-08-06 |
Family
ID=39919731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100176592A Pending CN101235919A (en) | 2008-03-07 | 2008-03-07 | Vacuum pump heating interlining pressure release device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101235919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486308A (en) * | 2013-10-11 | 2014-01-01 | 湖州三井低温设备有限公司 | Vacuum protection valve used at super-low temperature |
-
2008
- 2008-03-07 CN CNA2008100176592A patent/CN101235919A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486308A (en) * | 2013-10-11 | 2014-01-01 | 湖州三井低温设备有限公司 | Vacuum protection valve used at super-low temperature |
| CN103486308B (en) * | 2013-10-11 | 2015-12-09 | 湖州三井低温设备有限公司 | A kind of used at ultra-low temperature vacuum protective valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080806 |