CN202674421U - Gas cylinder for high-purity gas - Google Patents
Gas cylinder for high-purity gas Download PDFInfo
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- CN202674421U CN202674421U CN 201220372214 CN201220372214U CN202674421U CN 202674421 U CN202674421 U CN 202674421U CN 201220372214 CN201220372214 CN 201220372214 CN 201220372214 U CN201220372214 U CN 201220372214U CN 202674421 U CN202674421 U CN 202674421U
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Abstract
The utility model discloses a gas cylinder for high-purity gas. The gas cylinder for high-purity gas comprises a hand wheel (1), a valve body (2) and a switching assembly (3); the gas cylinder valve further comprises a pressure limiting assembly and a special gas charging device; the pressure limiting assembly is connected to the valve body (2) and is positioned between a gas outlet channel and a gas inlet channel, and a one-way valve is formed in the gas channel; and the special gas charging device is detachably connected to the valve body (2) in a gas outlet part, and is propped to the pressure limiting assembly during charging gas. According to the structure, the pressure limiting assembly is arranged between the gas outlet channel and the gas inlet channel of the gas cylinder valve, and the one-way valve is formed in the gas channel, which means that external pollutant and impure gas can be prevented from entering the gas cylinder once the pressure of the gas in the gas cylinder reaches the preset positive pressure difference, therefore, the high purity of the gas in the gas cylinder can be ensured, the gas cylinder is not needed to be subjected to vacuum pumping, and as a result, the producing cost is saved as well as the producing time.
Description
Technical field
The utility model relates to the technical field of valve, specifically is a kind of cylinder valve for high-pure gas.
Background technique
The cylinder valve of prior art, such as Fig. 1～shown in Figure 3, it generally includes handwheel 01, valve body 02 and switch block 03, has valve pocket 04 in the valve body 02, switch block 03 is positioned at valve pocket 04 and is connected with the end of handwheel 01, handwheel 01 is rotatably connected on the upper end of valve body 02, and the lower end of valve body 02 is connected with gas cylinder thread; Have the first vent 06, the second vent 07, the 3rd vent 05 and air outlet 08 in the valve body 02, the lower end of the first vent 06 is communicated with gas cylinder, the upper end is communicated with valve pocket 04 by switch block 03 or closes, the upper end that is switch block 03 and the first vent 06 forms valve, the second vent 07 is communicated with valve pocket 04, the 3rd vent 05 simultaneously, and the 3rd vent 05 is communicated with air outlet 08.When needs are used gas, be rotated counterclockwise handwheel 01, drive switch block 03 in valve pocket 04 interior rising, this moment switch block 03 and the first vent 06 place valve open, the interior gas of gas cylinder is successively through 08 going out from the air outlet behind the first vent 06, valve pocket 04, the second vent 07 and the 3rd vent 05.
But the cylinder valve of above-mentioned this structure exists following shortcoming to be:
1) in the gas cylinder of some storage high-pure gas, purity requirement to gas is very high, when the gas in the gas cylinder is finished, that is to say when gas pressure in the gas cylinder is zero, very easily sneak into extraneous pollutant and assorted gas, like this, when be filled with high-pure gas next time, can be because the pollutant of sneaking into and assorted gas reduce the interior gas purity of gas cylinder, thus cause gas to use;
2) when above this situation occurring, common way is the processing that must vacuumize the gas cylinder work, and then is filled with high-pure gas, so, certainly will increase cost of production, and spend again the more time;
3) in addition, in the situation that has two kinds of gases to use simultaneously, as when carrying out gas welding, usually using oxygen and two kinds of gases of acetylene gas, and the storage pressure of these two kinds of gases is different, therefore, the high gas backstreaming of pressure very easily occurs to the low air flue of pressure, like this, also affect the gas purity in the gas cylinder;
4) in addition, when the gas in the gas cylinder is finished, inflate gas cylinder, can might exist mistake to fill and wrong situation of filling, like this, also can reduce the gas purity in the gas cylinder.
The model utility content
Technical problem to be solved in the utility model is, a kind of cylinder valve for high-pure gas is provided, it can prevent that extraneous pollutant and assorted gas from entering in the gas cylinder, thereby guarantees the high-purity of gas in the gas cylinder, need not gas cylinder is vacuumized processing, saves cost of production and time.
For solving the problems of the technologies described above, the cylinder valve that is used for high-pure gas that the utility model provides, comprise handwheel, valve body and switch block, has the valve pocket with air inlet and the connection of giving vent to anger in the described valve body, switch block is connected to the end of handwheel and is positioned at valve pocket and forms valve with air inlet place of valve pocket, handwheel and valve body are rotationally connected, described cylinder valve also comprises pressure limiting assembly and device special for inflation, described pressure limiting assembly is connected on the valve body, and between outlet passageway and gas-entered passageway; Described device special for inflation is removable be connected on the valve body at the place of giving vent to anger and when inflation and the pressure limiting assembly push against.
Described outlet passageway is the air outlet, described gas-entered passageway comprises the first vent, the second vent and the 3rd vent, one end of the first vent communicates with gas cylinder, the other end communicates with valve pocket and forms valve with switch block, the two ends of the second vent communicate with an end of valve pocket and the 3rd vent respectively, and the other end of the 3rd vent communicates with the air outlet; Described pressure limiting assembly forms one-way cock in the joint of the second vent and the 3rd vent.
Described pressure limiting assembly comprises swivel nut, slide bar, spring and seal ring, described slide bar is comprised of the piston head that is connected as a single entity and guide rod, described guide rod passes the postspiracular end of threeway and is positioned at the air outlet, joint between joint between guide rod and the piston head, the 3rd vent and the second vent, these two joints form one-way cock; Described swivel nut has axial cavity, and the piston head of slide bar is slidingly fitted in the axial cavity and by the 3rd seal ring and is tightly connected; One end and the piston head of described spring push against, and push against at the bottom of the hole of the other end and axial cavity; Described swivel nut is threaded on the valve body and is connected and sealed by the first seal ring and the second seal ring respectively at free end and the root of swivel nut.
Has axial breeder tube in the piston head of described slide bar, has radially breeder tube in the guide rod, one end of described axial breeder tube communicates with the axial cavity of swivel nut, and the other end communicates with an end of breeder tube radially, and radially the other end of breeder tube communicates with the 3rd vent.
The joint of described the second vent and the 3rd vent is the conical surface, and the joint of corresponding guide rod and piston head is the conical surface for matching also, forms one-way cock by the 4th seal ring between two conical surfaces.
Described device special for inflation comprises gas-charging connection, jacking block seat and the 5th seal ring, and an end of described gas-charging connection is connected with source of inflation gas and communicates, and the other end is connected on the valve body at place, air outlet; The threaded one end of jacking block seat is connected in the gas-charging connection and is tightly connected by the 5th seal ring, and the end face of the other end is sphere and pushes against with the conical surface of air outlet; The sphere top of jacking block seat has outstanding jacking block, and the free end of described jacking block and guide rod pushes against; Has the vent that is communicated with source of inflation gas and air outlet in the described jacking block seat.
Described vent comprises axial air-filled pore and inclined hole radially, radially inclined hole is two, each radially an end of inclined hole communicate with the air outlet after passing the sphere of jacking block seat, communicates with an axial end of air-filled pore after the other end intersects, the other end of axial air-filled pore communicates with source of inflation gas.
After adopting above structure, the utility model compared with prior art has the following advantages:
1) owing between the outlet passageway of cylinder valve and gas-entered passageway, is provided with the pressure limiting assembly, and in venting channels, form one-way cock, in other words, in venting channels, be provided with an one-way valve, like this, when the gas in the gas cylinder is about to be finished, that is to say when gas pressure in the gas cylinder is predefined malleation difference, extraneous pollutant and assorted gas just can not enter in the gas cylinder, thereby guaranteed the high-purity of gas in the gas cylinder, and then need not gas cylinder is vacuumized processing, saves cost of production and time;
2) in addition, in the situation that the gas that two kinds of different pressures are arranged uses simultaneously, because the effect of pressure limiting assembly, the gas that pressure is higher can't back down guide rod, thereby also can't open one-way cock, therefore, can prevent that the gas backstreaming of elevated pressures is to gas cylinder, avoid causing mixing of gas impure, thereby avoid the danger of blasting;
3) in addition, when the gas in the gas cylinder is finished and will inflate gas cylinder the time, is not having in the situation of device special for inflation, be impossible exist mistake to fill and wrong situation of filling, like this, also more guaranteed the gas purity in the gas cylinder.
Description of drawings
Fig. 1 is the structural representation of cylinder valve in the prior art.
Fig. 2 is the structural representation of A-A direction among Fig. 1.
Fig. 3 is the structural representation of B-B direction among Fig. 1.
Fig. 4 is the structural representation that the utility model is used for the cylinder valve of high-pure gas.
Fig. 5 is the structural representation of C-C direction among Fig. 4.
Fig. 6 is the structure for amplifying schematic representation of D-D direction among Fig. 4.
Structural representation when Fig. 7 is the utility model inflation.
Wherein:
Prior art: 01, handwheel; 02, valve body; 03, switch block; 04, valve pocket; 05, the 3rd vent; 06, the first vent; 07, the second vent; 08, air outlet;
The utility model: 1, handwheel; 2, valve body; 3, switch block; 4, valve pocket; 5, the 3rd vent; 6, the first vent; 7, air outlet; 8, breeder tube radially; 9, the second vent; 10, the first seal ring; 11, the 3rd seal ring; 12, spring; 13, swivel nut; 14, the second seal ring; 15, axial cavity; 16, piston head; 17, axial breeder tube; 18, the 4th seal ring; 19, guide rod; 20, gas-charging connection; 21, jacking block seat; 22, axial air-filled pore; 23, the 5th seal ring; 24, inclined hole radially; 25, jacking block.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in more detail.
Be used for by the utility model of Fig. 4～shown in Figure 7 high-pure gas cylinder valve structural representation as can be known, it comprises handwheel 1, valve body 2 and switch block 3, has the valve pocket 4 with air inlet and the connection of giving vent to anger in the described valve body 2, switch block 3 is connected to the end of handwheel 1 and is positioned at valve pocket 4 and forms valve with air inlet place of valve pocket 4, and handwheel 1 is rotationally connected with valve body 2.Described cylinder valve also comprises pressure limiting assembly and device special for inflation, and described pressure limiting assembly is connected on the valve body 2, and between outlet passageway and gas-entered passageway, and in venting channels, form one-way cock.Described device special for inflation is removable be connected on the valve body 2 at the place of giving vent to anger and when inflation and the pressure limiting assembly push against.
Described outlet passageway is air outlet 7, described gas-entered passageway comprises the first vent 6, the second vent 9 and the 3rd vent 5, one end of the first vent 6 communicates with gas cylinder, the other end communicates with valve pocket 4 and forms valve with switch block 3, the two ends of the second vent 9 communicate with an end of valve pocket 4 and the 3rd vent 5 respectively, and the other end of the 3rd vent 5 communicates with air outlet 7.Described pressure limiting assembly forms one-way cock in the joint of the second vent 9 and the 3rd vent 5.
Described pressure limiting assembly comprises swivel nut 13, slide bar, spring 12 and seal ring, described slide bar is comprised of the piston head 16 that is connected as a single entity and guide rod 19, the end that described guide rod 19 passes behind the 3rd vent 5 is positioned at air outlet 7, joint between joint between guide rod 19 and the piston head 16, the 3rd vent 5 and the second vent 9, these two joints form one-way cock.Described swivel nut 13 has axial cavity 15, and the piston head 16 of slide bar is slidingly fitted in the axial cavity 15 and by the 3rd seal ring 11 and is tightly connected.One end and the piston head 16 of described spring 12 push against, and push against at the bottom of the hole of the other end and axial cavity 15.Described swivel nut 13 is threaded on the valve body 2 and is connected and sealed by the first seal ring 10 and the second seal ring 14 respectively at free end and the root of swivel nut 13.
Has axial breeder tube 17 in the piston head 16 of described slide bar, has radially breeder tube 8 in the guide rod 19, one end of described axial breeder tube 17 communicates with the axial cavity 15 of swivel nut 13, the other end communicates with an end of breeder tube 8 radially, and radially the other end of breeder tube 8 communicates with the 3rd vent 5.
The joint of described the second vent 9 and the 3rd vent 5 is the conical surface, and corresponding guide rod 19 is the conical surface that matches also with the joint of piston head 16, forms one-way cocks by the 4th seal ring 18 between two conical surfaces.
Described device special for inflation comprises gas-charging connection 20, jacking block seat 21 and the 5th seal ring 23, and an end of described gas-charging connection 20 is connected with source of inflation gas and communicates, and the other end is connected on the valve body 2 at 7 places, air outlet.The threaded one end of jacking block seat 21 is connected in the gas-charging connection 20 and by the 5th seal ring 23 and is tightly connected, and the end face of the other end is sphere and pushes against with the conical surface of air outlet 7.The sphere top of jacking block seat 21 has outstanding jacking block 25, and described jacking block 25 pushes against with the free end of guide rod 19; Has the vent that is communicated with source of inflation gas and air outlet 7 in the described jacking block seat 21.
Described vent comprises axial air-filled pore 22 and inclined hole 24 radially, radially inclined hole 24 is two, each radially an end of inclined hole 24 communicate with air outlet 7 after passing the sphere of jacking block seat 21, end with axial air-filled pore 22 after the other end intersects communicates, and axially the other end of air-filled pore 22 communicates with source of inflation gas.
In structure described in the utility model, the first seal ring 10, the second seal ring 14, the 3rd seal ring 11, the 4th seal ring 18, the 5th seal ring 23 are the O RunddichtringO.
Working procedure of the present utility model is as follows:
When 1) using gas, be rotated counterclockwise handwheel 1, drive switch block 3 and rise, this moment, the valve body 2 at switch block 3 and the first vent 6 places was thrown off valve open; Gas from the gas cylinder successively through the first vent 6, valve pocket 4 to second vents 9, when the gas pressure at the second vent 9 places reaches certain value, overcome the spring force of spring 12 with axial cavity 15 inner advance of piston head 16 toward swivel nut 13, this moment, the 4th seal ring 18 left the conical surface of the second vent 9 and the 3rd vent 5 joints, in other words, one-way cock is opened, and gas flows to 5 rear 7 outflows from the air outlet of the 3rd vent from the second vent 9.
When 2) after the gas in the gas cylinder is used, dropping to a pressure differential resetting value, in the outer thruster toward axial cavities 15 of the effect lower piston head 16 of the spring force of spring 12, until the 4th seal ring 18 props up the conical surface of the second vent 9 and the 3rd vent 5 joints, in other words, one-way cock is closed, at this moment, the gas in the gas cylinder no longer leaks, and same extraneous gas can not enter in the gas cylinder.
When 3) inflating, device special for inflation is twisted on valve body 2, in the precession process of gas-charging connection 20, jacking block 25 backs down guide rod 19, guide rod 19 is moved toward swivel nut 13 directions, after opening the passage of one-way cock, make with the gas of pressure successively from the axial air-filled pore 22 of jacking block seat 21, radially enter in the gas cylinder behind inclined hole 24, air outlet 7, the 3rd vent 5, the second vent 9, valve pocket 4 and the first vent 6; And simultaneously, gas also enters in the axial cavity 15 in the swivel nut 13 by the radially breeder tube 8 on the guide rod 19 and the axial breeder tube 17 on the piston head 16.
Owing to be provided with radially breeder tube 8 and axial breeder tube 17, if therefore by device special for inflation guide rod 19 is not backed down and open one-way cock, can't inflate gas cylinder.This be because, if do not back down guide rod 19, the gas that is filled with can be introduced into axial cavity 15, and the area in the axial cavity 15 is larger than the area of guide rod 19 in the 3rd vent 5, according to pressure principle, pressure in the axial cavity 15 is larger than the pressure of guide rod 19 in the 3rd vent 5, so guide rod 19 can not be open under the effect that does not have external force, thereby ambient atmos can't enter, and has just prevented that also mistake from filling and wrong operation of filling.
As a same reason, when having two kinds of gases to mix at the same time use, the gas that pressure is higher can be back in the lower gas channel of pressure, and at this moment, the gas that pressure is higher at first enters axial cavity 15, and according to pressure principle, pressure in the axial cavity 15 is larger than the pressure of guide rod 19 in the 3rd vent 5, so guide rod 19 is under the effect that does not have external force, also can not be open, thereby the higher gas of pressure also can't enter in the gas cylinder.
Claims (7)
1. cylinder valve that is used for high-pure gas, comprise handwheel (1), valve body (2) and switch block (3), has the valve pocket (4) with air inlet and the connection of giving vent to anger in the described valve body (2), switch block (3) is connected to the end of handwheel (1) and is positioned at valve pocket (4) and forms valve with air inlet place of valve pocket (4), handwheel (1) is rotationally connected with valve body (2), it is characterized in that: described cylinder valve also comprises pressure limiting assembly and device special for inflation, described pressure limiting assembly is connected on the valve body (2), and between outlet passageway and gas-entered passageway, and in venting channels, form one-way cock; Described device special for inflation is removable be connected to the valve body (2) at the place of giving vent to anger upper and when inflation and the pressure limiting assembly push against.
2. the cylinder valve for high-pure gas according to claim 1, it is characterized in that: described outlet passageway is air outlet (7), described gas-entered passageway comprises the first vent (6), the second vent (9) and the 3rd vent (5), one end of the first vent (6) communicates with gas cylinder, the other end communicates with valve pocket (4) and forms valve with switch block (3), the two ends of the second vent (9) communicate with an end of valve pocket (4) and the 3rd vent (5) respectively, and the other end of the 3rd vent (5) communicates with air outlet (7); Described pressure limiting assembly is at the joint formation one-way cock of the second vent (9) with the 3rd vent (5).
3. the cylinder valve for high-pure gas according to claim 2, it is characterized in that: described pressure limiting assembly comprises swivel nut (13), slide bar, spring (12) and seal ring, described slide bar is comprised of the piston head that is connected as a single entity (16) and guide rod (19), the end that described guide rod (19) passes behind the 3rd vent (5) is positioned at air outlet (7), joint between joint between guide rod (19) and the piston head (16), the 3rd vent (5) and the second vent (9), these two joints form one-way cock; Described swivel nut (13) has axial cavity (15), and the piston head of slide bar (16) is slidingly fitted in the axial cavity (15) and by the 3rd seal ring (11) and is tightly connected; One end of described spring (12) and piston head (16) push against, and push against at the bottom of the hole of the other end and axial cavity (15); It is upper and be connected and sealed by the first seal ring (10) and the second seal ring (14) respectively at free end and the root of swivel nut (13) that described swivel nut (13) is threaded in valve body (2).
4. the cylinder valve for high-pure gas according to claim 3, it is characterized in that: have axial breeder tube (17) in the piston head of described slide bar (16), has radially breeder tube (8) in the guide rod (19), one end of described axial breeder tube (17) communicates with the axial cavity (15) of swivel nut (13), the other end communicates with an end of breeder tube (8) radially, and radially the other end of breeder tube (8) communicates with the 3rd vent (5).
5. the cylinder valve for high-pure gas according to claim 3, it is characterized in that: described the second vent (9) is the conical surface with the joint of the 3rd vent (5), corresponding guide rod (19) is the conical surface that matches also with the joint of piston head (16), forms one-way cock by the 4th seal ring (18) between two conical surfaces.
6. according to claim 1 or 3 described cylinder valves for high-pure gas, it is characterized in that: described device special for inflation comprises gas-charging connection (20), jacking block seat (21) and the 5th seal ring (23), one end of described gas-charging connection (20) is connected with source of inflation gas and communicates, and the other end is connected on the valve body (2) of locating air outlet (7); The threaded one end of jacking block seat (21) is connected in the gas-charging connection (20) and is tightly connected by the 5th seal ring (23), and the end face of the other end is sphere and pushes against with the conical surface of air outlet (7); The sphere top of jacking block seat (21) has outstanding jacking block (25), and described jacking block (25) pushes against with the free end of guide rod (19); Has the vent that is communicated with source of inflation gas and air outlet (7) in the described jacking block seat (21).
7. the cylinder valve for high-pure gas according to claim 6, it is characterized in that: described vent comprises axial air-filled pore (22) and inclined hole (24) radially, radially inclined hole (24) is two, each radially an end of inclined hole (24) communicate with air outlet (7) after passing the sphere of jacking block seat (21), end with axial air-filled pore (22) after the other end intersects communicates, and axially the other end of air-filled pore (22) communicates with source of inflation gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220372214 CN202674421U (en) | 2012-07-30 | 2012-07-30 | Gas cylinder for high-purity gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220372214 CN202674421U (en) | 2012-07-30 | 2012-07-30 | Gas cylinder for high-purity gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674421U true CN202674421U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220372214 Expired - Fee Related CN202674421U (en) | 2012-07-30 | 2012-07-30 | Gas cylinder for high-purity gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN202674421U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704823A (en) * | 2017-03-27 | 2017-05-24 | 新疆通奥油田技术服务有限公司 | Inflation connector |
| CN107642611A (en) * | 2016-07-20 | 2018-01-30 | 浙江三花智能控制股份有限公司 | Charging valve |
| CN108626455A (en) * | 2018-05-03 | 2018-10-09 | 河南航天液压气动技术有限公司 | Bottle valve and cylinder package |
| CN111927989A (en) * | 2020-07-29 | 2020-11-13 | 凯迈（洛阳）气源有限公司 | Large-flow high-pressure valve structure for quick-change deflation of gas cylinder |
-
2012
- 2012-07-30 CN CN 201220372214 patent/CN202674421U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642611A (en) * | 2016-07-20 | 2018-01-30 | 浙江三花智能控制股份有限公司 | Charging valve |
| CN107642611B (en) * | 2016-07-20 | 2020-03-06 | 浙江三花智能控制股份有限公司 | Filling valve |
| CN106704823A (en) * | 2017-03-27 | 2017-05-24 | 新疆通奥油田技术服务有限公司 | Inflation connector |
| CN108626455A (en) * | 2018-05-03 | 2018-10-09 | 河南航天液压气动技术有限公司 | Bottle valve and cylinder package |
| CN111927989A (en) * | 2020-07-29 | 2020-11-13 | 凯迈（洛阳）气源有限公司 | Large-flow high-pressure valve structure for quick-change deflation of gas cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20170730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |