CN202691594U - Vacuumizing interface device of vacuum insulated low-temperature gas cylinder - Google Patents
Vacuumizing interface device of vacuum insulated low-temperature gas cylinder Download PDFInfo
- Publication number
- CN202691594U CN202691594U CN 201220356128 CN201220356128U CN202691594U CN 202691594 U CN202691594 U CN 202691594U CN 201220356128 CN201220356128 CN 201220356128 CN 201220356128 U CN201220356128 U CN 201220356128U CN 202691594 U CN202691594 U CN 202691594U
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- valve body
- vacuum
- gas cylinder
- push rod
- air chamber
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Abstract
The utility model relates to a vacuumizing interface device of a vacuum insulated low-temperature gas cylinder. The vacuumizing interface device of the vacuum insulated low-temperature gas cylinder mainly comprises a valve body, a vacuum stopper and a sealing ring; the valve body is in a T-shape; the valve body is a three-way pipe; an air chamber is arranged in the middle part of the valve body; the lower end of the air chamber is communicated with a clamp sleeve interface at the lower end of the valve body; the side end of the air chamber is communicated with an exhaust interface at the side end of the valve body; a vacuum stopper is arranged inside the air chamber; a spinning device clamped with the lower end of a push rod is arranged at the upper end of the vacuum stopper; the upper end of the push rod passes through a gland bush and is connected with a handle outside the upper end of the valve body, and a pressure spring is sleeved on the push rod between the lower end of the handle and the upper end of the gland bush. The vacuumizing interface device of the vacuum insulated low-temperature gas cylinder can accurately finish vacuumizing operation in the gas cylinder at low cost, and has the advantages of being simple in structure, convenient to use, and good in vacuumizing effect.
Description
Technical field
The utility model relates to a kind of vacuum thermal insulation low temperature gas cylinder and vacuumizes interface device, is mainly used in the Dewar tank, and low-temperature welding gas cylinder etc. vacuumizes on the interface device.
Background technique
Existing Dewar tank, low-temperature welding gas cylinder etc. vacuumizes barometer monitoring that the Main Basis vacuum means is set up and finishes control to suction in the gas cylinder, and need go back Structure of need complexity, the expensive vacuum stopper according to vacuum pressure automatic-sealed gas cylinder mouth in the bottle and cooperate and finish vacuum in the whole bottle.In the whole bottle vacuum have that interface easily leaks gas, suction, the high and baroque deficiency of vaccum-pumping equipment cost in the restive gas cylinder.
Summary of the invention
The purpose of this utility model is that a kind of vacuum thermal insulation low temperature gas cylinder of design vacuumizes interface device, can low-cost, accurately finish the operation to vacuumizing in the gas cylinder, have simple in structure, easy to use, the advantage that vacuumizing effect is good.For this reason, the utility model mainly is comprised of valve body, vacuum stopper and seal ring, valve body is in T shape, and valve body is three-way pipe, and the middle part is air chamber in the valve body, the communicate cutting ferrule interface of valve body lower end of air chamber lower end, the communicate interface of bleeding of valve body side of air chamber side is provided with vacuum stopper in the air chamber, the vacuum stopper upper end is provided with the card device that revolves with the clamping of push rod lower end, the push rod upper end is passed the gland handle outer with being positioned at the valve body upper end and is connected, and is arranged with stage clip on the push rod between handle lower end and the gland upper end.Described revolve to clamp be set to the groove that is positioned at the vacuum stopper upper center, groove upper end one side and be provided with card and be provided with block tongue along, push rod lower end, block tongue is threaded to clamping on block tongue lower end push rod and the vacuum stopper.Top and the lower end of described vacuum stopper side are provided with seal ring.The said structure design has reached the purpose of this utility model.
The utility model can low-cost, accurately be finished the operation to vacuumizing in the gas cylinder, has simple in structurely, easy to use, and vacuumizing effect is good, and concrete advantage is as follows:
1, the shift motion of vacuum stopper of the present utility model has been avoided complicated Design of Mechanical Structure by the decrement control through the stage clip of accurate Calculation, has reduced manufacture difficulty and manufacture cost.
2, vacuumize at valve body and gas cylinder and being connected of interface adopt the cutting ferrule interface sealing structure, avoided the little phenomenon of oozing of the ubiquitous gas of high vacuum lower interface.
3, vacuum stopper of the present utility model is selected and is revolved the card device clamping and break away from reliable conveniently, and vacuum stopper adopts the Double seal ring structure, and Double seal ring forms radially with the air chamber inwall, the end face double seal, good seal performance, spare part cheapness, be easy to get, versatility is good.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the card device structural representation that revolves of the present utility model.
Embodiment
As depicted in figs. 1 and 2, a kind of vacuum thermal insulation low temperature gas cylinder vacuumizes interface device, mainly is comprised of valve body 7, vacuum stopper 9 and seal ring 8.Valve body is in T shape, and valve body is three-way pipe, and the middle part is air chamber 4 in the valve body.The communicate interface 5 of bleeding of valve body side of the communicate cutting ferrule interface 6 of valve body lower end of air chamber lower end, air chamber side.
Be provided with vacuum stopper in the air chamber, the vacuum stopper upper end is provided with the card device that revolves with the clamping of push rod lower end.Described revolve clamp be set to the groove 13 that is positioned at the vacuum stopper upper center, groove upper end one side be provided with card along 12, push rod 3 lower ends are provided with block tongue 11, block tongue is threaded to block tongue lower end push rod and vacuum stopper upper end clamping, i.e. when block tongue is threaded to the block tongue lower end (push rod suitable/be rotated counterclockwise 90 °), push rod and vacuum stopper upper end clamping.The push rod upper end is passed gland 10 handle 1 outer with being positioned at the valve body upper end and is connected, and is arranged with stage clip 2 on the push rod between handle lower end and the gland upper end.The decrement of stage clip is determined through accurate Calculation according to the shift motion of vacuum stopper.Top and the lower end of described vacuum stopper side are provided with seal ring.
During use, vacuum interface that first will gas cylinder be bled inserts in the cutting ferrule interface of the present utility model, the locking cutting ferrule, then will bleed interface with pneumatic short circuit with vacuumize unit and be connected, guarantee all joints all without after the leakage, preparatory work is finished.The pumping process of gas cylinder is taken out two procedures with essence and is consisted of by slightly taking out.Bleed front with handle drive push rod suitable/be rotated counterclockwise 90 °, this moment, vacuum stopper was positioned under the effect of stage clip tension force above the air chamber, the cutting ferrule interface connects with the interface of bleeding, bleed-off passage connects in the air chamber.
Start slide valve pump and slightly take out operation.Air in the gas cylinder enters air chamber through the cutting ferrule interface and is extracted out continuously from the interface of bleeding, form gradually rough vacuum in the gas cylinder, thereby make the air chamber of vacuum stopper lower end also form rough vacuum, vacuum stopper slowly moves down under the gentle indoor negative pressure acting in conjunction of stage clip tension force, stage clip is compressed, and the air chamber space reduces gradually; Reach 2 * 10 when slightly taking out pressure
-2During Pa, the startup Roots pump carries out essence and takes out operation.Take out the carrying out of operation along with essence, vacuum stopper continues to move down under air chamber high vacuum suction function, and stage clip is gradually reduced.When stage clip reached maximum compressibility, vacuum stopper stopped mobile, is in two power static balancing states.When vacuumizing pressure gauge numerical stability on the unit 5 * 10
-4Behind the Pa, with (handle drive) push rod contrary/turn clockwise 90 °, push rod lower end from the groove of vacuum stopper, spin off (block tongue revolves and block tongue lower end disengaging configuration), vacuum stopper then is adsorbed to rapidly vacuumizing in the interface of this gas cylinder by high vacuum negative pressure pulling force, utilizes radially and realizes the sealing of air chamber condition of high vacuum degree with the seal ring of end face.Unload the pneumatic short circuit that the lower pumping interface links to each other with the vacuum unit, finish the gas cylinder work of bleeding.
In a word, the utility model can low-cost, accurately be finished the operation to vacuumizing in the gas cylinder, has simple in structurely, easy to use, and the advantage that vacuumizing effect is good can be promoted the use of.
Claims (3)
1. a vacuum thermal insulation low temperature gas cylinder vacuumizes interface device, mainly formed by valve body, vacuum stopper and seal ring, it is characterized in that: valve body is in T shape, valve body is three-way pipe, the middle part is air chamber in the valve body, the communicate cutting ferrule interface of valve body lower end of air chamber lower end, the communicate interface of bleeding of valve body side of air chamber side, be provided with vacuum stopper in the air chamber, the vacuum stopper upper end is provided with the card device that revolves with the clamping of push rod lower end, the push rod upper end is passed the gland handle outer with being positioned at the valve body upper end and is connected, and is arranged with stage clip on the push rod between handle lower end and the gland upper end.
2. vacuumize interface device by vacuum thermal insulation low temperature gas cylinder claimed in claim 1, it is characterized in that: described revolve to clamp be set to the groove that is positioned at the vacuum stopper upper center, groove upper end one side and be provided with card and be provided with block tongue along, push rod lower end, block tongue is threaded to clamping on block tongue lower end push rod and the vacuum stopper.
3. vacuumize interface device by vacuum thermal insulation low temperature gas cylinder claimed in claim 1, it is characterized in that: top and the lower end of described vacuum stopper side are provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356128 CN202691594U (en) | 2012-07-23 | 2012-07-23 | Vacuumizing interface device of vacuum insulated low-temperature gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356128 CN202691594U (en) | 2012-07-23 | 2012-07-23 | Vacuumizing interface device of vacuum insulated low-temperature gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202691594U true CN202691594U (en) | 2013-01-23 |
Family
ID=47547216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220356128 Expired - Fee Related CN202691594U (en) | 2012-07-23 | 2012-07-23 | Vacuumizing interface device of vacuum insulated low-temperature gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202691594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712906A (en) * | 2015-03-20 | 2015-06-17 | 日照兴业汽车配件有限公司 | Low-temperature insulated cylinder vacuum leakage detection tool |
| CN112128615A (en) * | 2020-08-27 | 2020-12-25 | 上海齐耀动力技术有限公司 | Sealing structure with built-in dehydrogenation agent and vacuum heat insulation device |
-
2012
- 2012-07-23 CN CN 201220356128 patent/CN202691594U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712906A (en) * | 2015-03-20 | 2015-06-17 | 日照兴业汽车配件有限公司 | Low-temperature insulated cylinder vacuum leakage detection tool |
| CN112128615A (en) * | 2020-08-27 | 2020-12-25 | 上海齐耀动力技术有限公司 | Sealing structure with built-in dehydrogenation agent and vacuum heat insulation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130723 |