CN206206636U - Helium recovery pipeline counterbalance valve - Google Patents
Helium recovery pipeline counterbalance valve Download PDFInfo
- Publication number
- CN206206636U CN206206636U CN201621178898.2U CN201621178898U CN206206636U CN 206206636 U CN206206636 U CN 206206636U CN 201621178898 U CN201621178898 U CN 201621178898U CN 206206636 U CN206206636 U CN 206206636U
- Authority
- CN
- China
- Prior art keywords
- bonnet
- valve
- valve seat
- valve element
- passage
- 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 - Fee Related
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- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a kind of helium recovery pipeline counterbalance valve, include valve seat, bonnet base, bonnet extension tube and bonnet orifice plate and the valve element for being sequentially connected and connecing, the inside of valve seat is provided with downstream passage, and the inside of bonnet base is provided with the overdraught passage being connected with the inside of bonnet extension tube and downstream passage respectively；Valve element is spheroidal, in overdraught passage, the internal diameter with diameter greater than downstream passage of valve element, less than the internal diameter of overdraught passage；The upper surface of valve seat is provided with the sealing surface being engaged with valve element.The utility model can make pipeline be in malleation on the premise of the liquid helium experimental rig operation stability for not influenceing accessed pipe network, it is to avoid pipeline suction foreign gas；Gettering effect of the negative-pressure pipeline to liquid helium experimental rig is eliminated, the liquid helium evaporation in testing equipment is reduced；It is easy to the daily leak detection of pipeline.
Description
Technical field
The utility model is related to counterbalance valve field, specifically a kind of helium recovery pipeline counterbalance valve.
Background technology
The characteristics of counterbalance valve sold in the market is：Circulation area is small, and Opening pressure is high.Deficiency is：For helium
During recovery channel, the discharge of liquid helium testing equipment can be caused obstructed and pressure-bearing, have a strong impact on the stability of liquid helium testing equipment；It is close
Sealing property does not reach the working condition requirement for reclaiming helium.
Utility model content
The purpose of this utility model is to provide a kind of helium recovery pipeline counterbalance valve, in helium recovery pipeline, due to
Helium gas molecules are small, the reason such as high of collecting balloon positions, and pipeline is often below atmospheric pressure, installs this slight pressure counterbalance valve, can
With do not influence access pipe network liquid helium experimental rig operation stability on the premise of, make pipeline be in malleation, 1）Avoid pipe
Road sucks foreign gas；2）Gettering effect of the negative-pressure pipeline to liquid helium experimental rig is eliminated, the liquid helium reduced in testing equipment steams
Hair；3）It is easy to the daily leak detection of pipeline.
The technical solution of the utility model is as follows：
A kind of helium recovery pipeline counterbalance valve, includes valve seat, bonnet base, bonnet extension tube, bonnet orifice plate and valve
Core, it is characterised in that：Described bonnet base is fixedly mounted on the valve seat, and the bottom of the bonnet extension tube is fixedly connected
On the bonnet base, described bonnet orifice plate is fixedly connected on the top of the bonnet extension tube；The inside of the valve seat
Downstream passage is provided with, the inside of the bonnet base is provided with logical with the inside of the bonnet extension tube and the downstream respectively
The overdraught passage that road is connected；Described valve element is spheroidal, and in described overdraught passage, the diameter of valve element is big
In the internal diameter of the downstream passage, less than the internal diameter of the overdraught passage；The upper surface of the valve seat is provided with and the valve
The sealing surface that core is engaged.
Described helium recovery pipeline counterbalance valve, it is characterised in that：Described bonnet base is bolted installation
On the valve seat, sealing ring is provided between the faying face of bonnet base and the valve seat.
Described helium recovery pipeline counterbalance valve, it is characterised in that：Described valve seat is stainless steel valve seat.
Described helium recovery pipeline counterbalance valve, it is characterised in that：Described valve element uses silicon rubber ball.
The beneficial effects of the utility model：
The utility model, as valve element, and saves valve element guide post using silicon rubber ball, be capable of achieving small back pressure and
Good voltage regulation result；By the contact between silicon rubber valve element and stainless steel sealing surface of seat, leakage in helium can be avoided from falling
Flow phenomenon, while avoiding leading back receipts compressor fault and impacting liquid helium testing equipment；Argon arc welding is used between counterbalance valve and pipeline
Butt welding is connected, and is sealed using vacuum flange formula between valve seat and bonnet, is realized without leakage, reduces the helium wasting of resources.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 be Fig. 1 in A-A to structural representation.
Specific embodiment
Referring to Fig. 1,2, a kind of helium recovery pipeline counterbalance valve, include valve seat 4, bonnet base 2, bonnet extension tube 6,
Bonnet orifice plate 5 and valve element 1, bonnet base 2 are fixedly mounted on valve seat 4, and the bottom of bonnet extension tube 6 is fixedly connected on bonnet bottom
On seat 2, bonnet orifice plate 5 is fixedly connected on the top of bonnet extension tube 6；The inside of valve seat 4 is provided with downstream passage 9, bonnet bottom
The inside of seat 2 is provided with the overdraught passage 8 being connected with the inside of bonnet extension tube 6 and downstream passage 9 respectively；Valve element 1 is
Spheroidal, and in overdraught passage 8, the internal diameter with diameter greater than downstream passage 9 of valve element 1, less than overdraught passage 8
Internal diameter；The upper surface of valve seat 4 is provided with the sealing surface 10 being engaged with valve element 1.
In the utility model, bonnet base 2 is fixedly mounted on valve seat 4 by bolt 3, the knot of bonnet base 2 and valve seat 4
Sealing ring 7 is provided between conjunction face.
Valve seat 4 is stainless steel valve seat.
Valve element 1 uses silicon rubber ball.
It is atmospheric pressure in pressure, this counterbalance valve is even installed on the helium recovery pipeline of negative pressure, helium gathers at valve seat 4
Collection, and float silicon rubber spherical valve core 1 with small pressure（It is the counterbalance valve of DN50 for latus rectum, Opening pressure is no more than
300 Pa）, then helium entered by annular space between valve element 1 and bonnet base 2, the finally top from bonnet extension tube 6
Enter bonnet orifice plate 5 and flow out.
When no gas is not enough to open valve element 1 by counterbalance valve or import helium pressure, valve element 1 and bonnet base
2 sealing surface laminating, realizes that non-return is acted on.
When counterbalance valve is subject to suddenly big air-flow and high pressure to impact, valve element 1 quickly will upspring to bonnet orifice plate 5, valve element 1
Back pressure valve outlet will not be stuck in, helium can pass through counterbalance valve.
Claims (4)
1. a kind of helium recovery pipeline counterbalance valve, includes valve seat, bonnet base, bonnet extension tube, bonnet orifice plate and valve element,
It is characterized in that：Described bonnet base is fixedly mounted on the valve seat, and the bottom of the bonnet extension tube is fixedly connected on
On the bonnet base, described bonnet orifice plate is fixedly connected on the top of the bonnet extension tube；The inside of the valve seat sets
There is downstream passage, the inside of the bonnet base is provided with inside and the downstream passage respectively with the bonnet extension tube
The overdraught passage being connected；Described valve element is spheroidal, and in described overdraught passage, valve element with diameter greater than
The internal diameter of the downstream passage, less than the internal diameter of the overdraught passage；The upper surface of the valve seat is provided with and the valve element
The sealing surface being engaged.
2. helium recovery pipeline counterbalance valve according to claim 1, it is characterised in that：Described bonnet base passes through spiral shell
Bolt is fixedly mounted on the valve seat, and sealing ring is provided between the faying face of bonnet base and the valve seat.
3. helium recovery pipeline counterbalance valve according to claim 1, it is characterised in that：Described valve seat is stainless steel valve
Seat.
4. helium recovery pipeline counterbalance valve according to claim 1, it is characterised in that：Described valve element uses silicon rubber
Ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178898.2U CN206206636U (en) | 2016-11-03 | 2016-11-03 | Helium recovery pipeline counterbalance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178898.2U CN206206636U (en) | 2016-11-03 | 2016-11-03 | Helium recovery pipeline counterbalance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206636U true CN206206636U (en) | 2017-05-31 |
Family
ID=58757808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621178898.2U Expired - Fee Related CN206206636U (en) | 2016-11-03 | 2016-11-03 | Helium recovery pipeline counterbalance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206636U (en) |
-
2016
- 2016-11-03 CN CN201621178898.2U patent/CN206206636U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20181103 |