CN201672116U - Safe valve - Google Patents
Safe valve Download PDFInfo
- Publication number
- CN201672116U CN201672116U CN2010201801610U CN201020180161U CN201672116U CN 201672116 U CN201672116 U CN 201672116U CN 2010201801610 U CN2010201801610 U CN 2010201801610U CN 201020180161 U CN201020180161 U CN 201020180161U CN 201672116 U CN201672116 U CN 201672116U
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- valve
- cavity
- suction port
- pressure
- port
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- Expired - Fee Related
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Abstract
The utility model discloses a safe valve capable of controlling the gas pressure in a high-pressure container. A cavity axially extending is opened on the upper part of the valve body. An exhaust hole is opened on the side wall at the bottom of the cavity. A gas inlet communicated with the cavity is opened at the lower part of the valve body. An adjustment screw is screwed with an internal thread at the upper part of the cavity. A cone-shaped valve plug slideably arranged in the cavity. A spring is arranged between the valve plug and the adjustment screw and the valve plug is pushed into the gas inlet to cut off the channel between the gas inlet and the exhaust hole. An inner cavity axially extending is opened on the upper part of the valve plug. A small hole is arranged at the bottom of the inner cavity to be communicated with the gas inlet. The cross section of the inner cavity is smaller than the cross section of the gas inlet. The spring is arranged in the inner cavity and the inner cavity houses the lower part of the adjustment screw and its seal ring. The safe valve is suitable for various movable high-pressure containers using the high-pressure gas as the power source.
Description
Technical field
The utility model relates to a kind of valve of controlling gas pressure in the high-pressure bottle.
Background technique
The structure of existing safety valve, as shown in Figure 1: the top of valve body 10 has a cavity 110 that extends vertically.The top of cavity 110 is provided with internal thread and screws one adjusts screw 20.The valve plug 40 of a taper is mounted slidably in the bottom of this cavity 110, and a spring 30 is arranged between valve plug 40 and the adjustment screw 20.Screw 20 is adjusted in precession or back-out, can adjust the pretightening force of spring 30.Have exhaust port 120 on the sidewall of cavity 110 bottoms.The periphery of valve body 10 bottoms has outside thread 130, so that be installed on the high-pressure bottle.The bottom of valve body 10 has a suction port 140 that is communicated with cavity 110.
At ordinary times, external high-pressure bottle is granted the pretightening force of the pressure of valve plug 40 less than spring 30 by the pressurized gas of suction port 140 inputs, and spring 30 withstands on valve plug 40 on the suction port 140, the conical surface closes suction port 140 of valve plug 40.Pressurized gas in the high-pressure bottle can outwards not revealed.
Grant the pretightening force of the pressure of valve plug 40 above spring 30 when external high-pressure bottle by the pressurized gas of suction port 140 inputs, valve plug 40 upwards pushes spring 30, spring 30 compressions.Pass through the conical surface of valve plug 40 and the gap between the suction port 140 from the pressurized gas of suction port 140 inputs, outwards discharge from exhaust port 120, grant the pretightening force of the pressure of valve plug 40 until high-pressure bottle inner high voltage gas much smaller than spring 30, sealing suction port 140 on the suction port 140 shifted valve plug 40 onto once more by spring 30, be 40 times seats of valve plug after the release, the pressurized gas in the high-pressure bottle just can not continue outside leakage.
Existing safety valve has following shortcoming: 1, and the pressure of high-pressure bottle mesohigh gas is much smaller than the pretightening force of spring 30, i.e. the qualification pressure of high-pressure bottle mesohigh gas when returning seat; The gas of releasing is too much, is unfavorable for effectively controlling the pressure of high-pressure bottle mesohigh gas.2, spring 30 directly bears the pressure of high-pressure bottle mesohigh gas, and is stressed fragile greatly.3, along with the increased pressure of high-pressure bottle mesohigh gas, the necessary corresponding increase of the line of spring 30 footpath and size, thus the overall dimensions of safety valve also must strengthen.So existing safety valve incompatibility various be to use on the movable equipment high-pressure bottle of power source with pressurized gas.
The model utility content
The utility model aims to provide that a kind of to be adapted at various be the safety valve that uses on the mobile high-pressure container of power source with pressurized gas.
The technical solution of the utility model is: a kind of safety valve, the top of valve body have a cavity that extends vertically, have exhaust port on the sidewall of this cavity bottom; The bottom of valve body has the suction port that is communicated with cavity; The top of this cavity is provided with internal thread and screws one adjusts screw; The valve plug of a taper is mounted slidably in this cavity; Spring is arranged on valve plug and adjusts between the screw, push valve plug to this suction port and cut off this suction port and this exhaust port between passage; The top of described valve plug has an inner chamber that extends vertically, and the bottom of this inner chamber is provided with an aperture and is communicated with described suction port; The sectional area of this inner chamber is less than the sectional area of described suction port; Described spring is arranged in this inner chamber and this inner chamber contains the bottom and the seal ring thereof of described adjustment screw.
At ordinary times, grant the pretightening force of the pressure of valve plug less than spring after the pressurized gas that external high-pressure bottle is imported by suction port enter inner chamber by aperture, spring withstands on valve plug on the suction port, the conical surface closes suction port of valve plug.Pressurized gas in the high-pressure bottle can outwards not revealed.
The pressure of granting valve plug after the pressurized gas of external high-pressure bottle by suction port input enter inner chamber by aperture surpasses the pretightening force of spring, and valve plug upwards pushes spring, length of spring compressed.Pass through the conical surface of valve plug and the gap between the suction port from the pressurized gas of suction port input, outwards discharge from exhaust port, after entering inner chamber by aperture, high-pressure bottle inner high voltage gas grants the pretightening force of the pressure of valve plug less than spring, spring is shifted valve plug onto once more and is sealed suction port on the suction port, be that valve plug returns seat after the release, the pressurized gas in the high-pressure bottle just can not continue outside leakage.
External high-pressure bottle enters inner chamber by the pressurized gas of suction port input by aperture, the pressure that causes these pressurized gas to grant valve plug only amasss the difference of gained and the product of this pressurized gas pressure for this suction port sectional area deducts intracavity section, and the suffered pressure of valve plug greatly reduces; So the pretightening force of spring can reduce greatly, the line of spring footpath and size can reduce greatly, thereby the sensitivity of spring is improved.The pressure of high-pressure bottle mesohigh gas is near limiting pressure when returning seat; The gas of releasing is few, can effectively control the pressure of high-pressure bottle mesohigh gas.Spring no longer directly bears the pressure of high-pressure bottle mesohigh gas, and is stressed little not fragile.The line footpath and the size of spring reduce, and the overall dimensions of safety valve also can reduce.So this safety valve is adapted at using on the high-pressure bottle of various pressurized gas.
In the enforcement structure of optimizing: the bottom of described valve body has a shoulder hole that extends vertically and be communicated with cavity, and the aperture section of this shoulder hole is communicated with cavity, and the valve port that plastic cement material has suction port is arranged in the macropore section of this shoulder hole; The aperture section diameter of this shoulder hole is greater than the diameter of described suction port.Valve port by means of plastic cement material can improve the sealability of valve plug to suction port, satisfies the seal request of high pressure conditions.
And then: the macropore section opening side of described shoulder hole is provided with internal thread and screws a perforated screw, and described valve port is by the macropore section bottom surface of this perforated screw top to shoulder hole; The center hole of this perforated screw is communicated with the suction port on the described valve port.Use the fixing described valve port of perforated screw, be convenient to assembling.
Particularly: described valve port bottom is provided with the small vias that is communicated with suction port, the corresponding center hole that is communicated with described perforated screw of this small vias; The periphery of described valve port bottom has annular groove and seal ring is set.Utilize small vias to abdicate the space,, be convenient to assemble and can guarantee the seal request of high pressure conditions to lay seal ring for annular groove.
Safety valve of the present utility model is opened an inner chamber that extends vertically on the top of valve plug on the basis of existing safety valve, the bottom of this inner chamber is established aperture and is communicated with suction port; The sectional area of this inner chamber is less than the sectional area of described suction port; Be arranged on spring in this inner chamber and this inner chamber contains the bottom and the seal ring thereof of described adjustment screw.Thereby changed the force way of valve plug, pressurized gas are granted the pressure of valve plug only for this suction port sectional area deducts the difference of the long-pending gained of intracavity section and the product of this pressurized gas pressure, and the suffered pressure of valve plug greatly reduces; So the pretightening force of spring can reduce greatly, the line of spring footpath and size can reduce greatly, thereby the sensitivity of spring is improved.Along with releasing of high-pressure bottle mesohigh gas, the suffered pressure of valve plug reduces; And after the sensitivity of spring improves, can make a response rapidly, when valve plug was returned, the pressure of high-pressure bottle mesohigh gas was near limiting pressure; For example be 70 kilograms existing safety valve, open when the pressure of high-pressure bottle mesohigh gas is 70 kilograms, could return seat when the pressure of high-pressure bottle mesohigh gas is the 30-40 kilogram for qualification pressure.And be the utility model safety valve of 70 kilograms for limiting pressure, when being 70 kilograms, opens the pressure of high-pressure bottle mesohigh gas, and the pressure of high-pressure bottle mesohigh gas is 65 kilograms can return seat.The gas of releasing is few, can effectively control the pressure of high-pressure bottle mesohigh gas.Spring stress is little, and is not fragile.The line footpath and the size of spring reduce, and the overall dimensions of safety valve also can be reduced.It for example is 70 kilograms existing safety valve for qualification pressure, about 100 millimeters of the external diameter of valve body, for limiting pressure is the utility model safety valve of 70 kilograms, and the external diameter of valve body only is 15 millimeters, so safety valve of the present utility model is adapted at using on the various pressurized gas high-pressure bottles.
Description of drawings
Fig. 1 is the cross-sectional view of an existing safety valve.
Fig. 2 is an embodiment's of the utility model safety valve a perspective view.
Fig. 3 is Fig. 2 embodiment's a Facad structure schematic representation.
Fig. 4 is the structural representation of A-A section among Fig. 3.
Fig. 5 is the cross-sectional view of Fig. 2 embodiment at the superpressure state.
Embodiment
An embodiment's of the utility model safety valve structure, as Fig. 2-shown in Figure 4, valve body 1 upper periphery of this safety valve is made external Hexagon, so that with spanner it is rotated.Valve body 1 top has a cavity 11 that extends vertically downwards, has a plurality of exhaust ports 12 on the sidewall of these cavity 11 bottoms; The top of this cavity 11 is provided with internal thread and screws one adjusts screw 2.The bottom 21 of adjusting screw 2 is elongated, and its periphery has annular groove 22 and seal ring 3 is set.The valve plug 4 of a taper is mounted slidably in this cavity 11; The top of this valve plug 4 has an inner chamber 41 that extends vertically, and the bottom of this inner chamber 41 is provided with an aperture 42.This inner chamber 41 contains bottom 21 and seal ring 3 and spring 5 of adjusting screw 2.Spring 5 is between the bottom and adjustment screw 2 of valve plug 4 inner chambers 41.
The periphery of valve body 1 bottom has outside thread 13, so that be installed on the high-pressure bottle.The bottom of valve body 1 has a shoulder hole 14 that downwards extends and be communicated with cavity 11 vertically, and the aperture section of this shoulder hole 14 is communicated with cavity 11, and the valve port 6 that plastic cement material has suction port 61 is arranged in the macropore section of this shoulder hole 14; The aperture section diameter of this shoulder hole 14 is bigger 6 millimeters than the diameter of phi E of suction port 61, makes the conical surface of valve plug 4 keep at least 1 mm distance with the upper end of these shoulder hole 14 aperture section with the last end in contact of suction port 61.The diameter of phi E of suction port 61 than valve plug 4 inner chambers 41 diameter of phi F big 1 millimeter; So the sectional area of valve plug 4 inner chambers 41 is less than the sectional area of valve body 1 suction port 61.Valve port 6 bottoms are provided with the small vias 62 that is communicated with suction port 61; The periphery of valve port 6 bottoms has annular groove 63 and seal ring 7 is set.The macropore section opening side of shoulder hole 14 is provided with internal thread and screws a perforated screw 8, and valve port 6 is by the macropore section bottom surface of these perforated screw 8 tops to shoulder hole 14; The small vias 62 of the center hole 81 of perforated screw 8 on valve port 6 is communicated with suction port 61.
At ordinary times, please see Figure 4: the center hole 81 of external high-pressure bottle by perforated screw 8 granted the pretightening force of the pressure of valve plug 4 less than spring 5 after the pressurized gas of small vias on the valve port 6 62 and the suction port 61 inputs aperture 42 by valve plug 4 enters inner chamber 41, spring 5 withstands on valve plug 4 on the suction port 62 on the valve port 6, suction port 62 on the conical surface closes valve port 6 of valve plug 4 has cut off the passage between suction port 62 and valve body 1 upper air-vent 12.Pressurized gas in the high-pressure bottle can outwards not revealed.
The pressure of granting valve plug 4 when the center hole 81 of external high-pressure bottle by perforated screw 8 after the pressurized gas of small vias on the valve port 6 62 and the suction port 61 inputs aperture 42 by valve plug 4 enters inner chamber 41 surpasses the pretightening force of spring 5, please see Figure 5: valve plug 4 upwards slides in cavity 11 and upwards pushes spring 5, makes spring 5 compressions.Pass through the conical surface of valve plug 4 and the gap between the suction port 61 from the pressurized gas of suction port 61 inputs, each exhaust port 12 from valve body 1 outwards discharges, after entering inner chamber 41 by valve plug 4 apertures 42, high-pressure bottle inner high voltage gas grants the pretightening force of the pressure of valve plug 4 less than spring, spring 5 promote valve plugs 4 in cavity 11 to lower slider, once more valve plug 4 is shifted onto on the suction port 61 on the valve port 6 and sealed suction port 61, cut off the passage between each exhaust port 12 on suction port 61 and the valve body 1; Be 4 times seats of valve plug after the release, the pressurized gas in the high-pressure bottle just can not continue outside leakage.
The above only is the utility model preferred embodiment.Yet, do not limit the scope that the utility model is implemented with this.The equivalence of doing according to the technical solution of the utility model and description changes and modification, all should belong to the scope that the utility model is contained.
Claims (4)
1. safety valve, the top of valve body have a cavity that extends vertically, have exhaust port on the sidewall of this cavity bottom; The bottom of valve body has the suction port that is communicated with cavity; The top of this cavity is provided with internal thread and screws one adjusts screw; The valve plug of a taper is mounted slidably in this cavity; Spring is arranged on valve plug and adjusts between the screw, push valve plug to this suction port and cut off this suction port and this exhaust port between passage; It is characterized in that: the top of described valve plug has an inner chamber that extends vertically, and the bottom of this inner chamber is provided with an aperture and is communicated with described suction port; The sectional area of this inner chamber is less than the sectional area of described suction port; Described spring is arranged in this inner chamber and this inner chamber contains the bottom and the seal ring thereof of described adjustment screw.
2. a kind of safety valve according to claim 1, it is characterized in that: the bottom of described valve body has a shoulder hole that extends vertically and be communicated with cavity, the aperture section of this shoulder hole is communicated with cavity, and the valve port that plastic cement material has suction port is arranged in the macropore section of this shoulder hole; The aperture section diameter of this shoulder hole is greater than the diameter of described suction port.
3. a kind of safety valve according to claim 2 is characterized in that: the macropore section opening side of described shoulder hole is provided with internal thread and screws a perforated screw, and described valve port is by the macropore section bottom surface of this perforated screw top to shoulder hole; The center hole of this perforated screw is communicated with the suction port on the described valve port.
4. a kind of safety valve according to claim 3 is characterized in that: described valve port bottom is provided with the small vias that is communicated with suction port, the corresponding center hole that is communicated with described perforated screw of this small vias; The periphery of described valve port bottom has annular groove and seal ring is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201801610U CN201672116U (en) | 2010-05-05 | 2010-05-05 | Safe valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201801610U CN201672116U (en) | 2010-05-05 | 2010-05-05 | Safe valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201672116U true CN201672116U (en) | 2010-12-15 |
Family
ID=43329528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201801610U Expired - Fee Related CN201672116U (en) | 2010-05-05 | 2010-05-05 | Safe valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201672116U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678984A (en) * | 2011-03-05 | 2012-09-19 | 江苏中煤机电科技有限公司 | Differential pressure type automatic relief valve |
| CN107477196A (en) * | 2017-09-29 | 2017-12-15 | 杭州屹石科技有限公司 | A kind of interlock type gas-liquid motor-operated control valve |
| CN110181554A (en) * | 2018-02-23 | 2019-08-30 | 发那科株式会社 | Security unit and robot |
| CN112012920A (en) * | 2019-05-31 | 2020-12-01 | 罗伯特·博世有限公司 | Air bleeder for fuel pump and fuel pump |
-
2010
- 2010-05-05 CN CN2010201801610U patent/CN201672116U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678984A (en) * | 2011-03-05 | 2012-09-19 | 江苏中煤机电科技有限公司 | Differential pressure type automatic relief valve |
| CN107477196A (en) * | 2017-09-29 | 2017-12-15 | 杭州屹石科技有限公司 | A kind of interlock type gas-liquid motor-operated control valve |
| CN110181554A (en) * | 2018-02-23 | 2019-08-30 | 发那科株式会社 | Security unit and robot |
| CN112012920A (en) * | 2019-05-31 | 2020-12-01 | 罗伯特·博世有限公司 | Air bleeder for fuel pump and fuel pump |
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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: 20101215 Termination date: 20120505 |