CN100491788C - Anti-freezing pressure reducing device for natural gas - Google Patents
Anti-freezing pressure reducing device for natural gas Download PDFInfo
- Publication number
- CN100491788C CN100491788C CNB2006100501960A CN200610050196A CN100491788C CN 100491788 C CN100491788 C CN 100491788C CN B2006100501960 A CNB2006100501960 A CN B2006100501960A CN 200610050196 A CN200610050196 A CN 200610050196A CN 100491788 C CN100491788 C CN 100491788C
- Authority
- CN
- China
- Prior art keywords
- natural gas
- pressure reducing
- reducing device
- freezing pressure
- push pin
- 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
Links
Images
Landscapes
- Control Of Fluid Pressure (AREA)
- Safety Valves (AREA)
Abstract
An anti-freezing pressure release valve of natural gas consists of valve body, air inlet and outlet, gas pressure meter interface, diaphragm set, regulation unit and center unit. It is featured as setting center unit at bottom of valve body to be center unit being connected long, externally arranging operation spring of center unit in socket sleeve and setting heat conduction component used for radiating heat at down end of socket sleeve.
Description
Technical field
The present invention relates to equilibrium valve.Specifically a kind of compressed natural gas equilibrium valve device decompression, the can regulate delivery pressure that is used for.
Background technique
Will be in the natural gas transport process through overcompression and supercharging.Its source end pressurized gas are up to 20MPa～25MPa, and the gas output pressure that enters the user side reduction valve is 0.3MPa～0.8MPa, because the existence of pressure difference all can cause the low pressure gas room temperature acutely to reduce because of the diffusion frosting.Its pressure difference is big more, and the cooling phenomenon is remarkable more, and the consequence of influence is also serious more.The lighter can make gas pressure, flow measurement misalignment, and weight person will break down because of push pin device, and equilibrium valve lost efficacy, and pipeline is in blocks or straight-through abnormal condition.
A kind of traditional way is to adopt the working method of cascade, makes pressure fall classification and reduces, and alleviates the influence of frosting to single-stage.Another kind is a method of utilizing hot water passageway to heat in the disclosed chamber of Chinese patent CN00238326.8.
Though two kinds of above-mentioned methods are all practical, the former equipment will be multiplied, and the latter has then increased the equipment control link, certainly will will increase administrative staff's workload and responsibility.They more or less exist defective.
Summary of the invention
The present invention will provide a kind of improved compressed natural gas decompressor.It can reduce because of adopting cascade to produce the equipment input cost.Also can not increase management workload.
The principle of the invention is to adopt the way of heat-conducting piece heat radiation to realize that anti-loose " heat " reaches to alleviate the influence of frosting to push pin device (particularly spring) proper functioning.
A kind of anti-freezing pressure reducing device for natural gas, the heat-conducting piece that comprises valve body, air inlet/outlet, barometer interface, diaphragm unit, controlling device, push pin device and a heat transmission, it is characterized in that said push pin device is the push pin device of a spreading, it is located at the valve body below, the thimble of push pin device is arranged in the gas port on the inlet hole platform, working spring under the thimble is located at and extends in the external cover for seat, and the lower end of cover for seat is connected with heat-conducting piece.
Anti-freezing pressure reducing device for natural gas of the present invention, its valve body is made up of drain pan and upper casing, is provided with the inlet hole platform in the drain pan air chamber, and the surface of this inlet hole platform is provided with the groove that air guide is used.
Anti-freezing pressure reducing device for natural gas of the present invention, the hole platform is 3～5 millimeters to the distance of diaphragm unit bottom surface on this inlet hole platform.
Anti-freezing pressure reducing device for natural gas of the present invention, described push pin device is made up of thimble, sealing cap, blocking, mast, working spring, cover for seat, and the drain pan of cover for seat and valve body is for being threaded, and cover for seat and heat-conducting piece are for being threaded.
Anti-freezing pressure reducing device for natural gas of the present invention is provided with isolation pad between its mast and working spring.
Anti-freezing pressure reducing device for natural gas of the present invention, the cross section of thimble are square.
Anti-freezing pressure reducing device for natural gas of the present invention, described controlling device comprise a threaded guide rod, and its pitch is 1 millimeter.
Anti-freezing pressure reducing device for natural gas of the present invention, the diaphragm in the described diaphragm unit is for strengthening the rubber disk, and thickness is 〉=3 millimeters.
Anti-freezing pressure reducing device for natural gas of the present invention has following good effect:
1), because push pin device spreading and external, improved the environmental conditions of working spring, the influence of frosting cooling is overcome.
2), after on the cover for seat of its working spring heat-conducting piece being set, make ambient temperature become the operating temperature of working spring, thereby make nominal operating condition that guarantee arranged.When intake temperature was 0 ℃, the rock gas high low pressure of decompressor can be directly from carrying out proper functioning decompression conversion between 20～25MPa to 0.3～0.8MPa, and temperature is-40～-60 ℃ in the air chamber.
3), cost is not high, easy to maintenance.
Description of drawings
Fig. 1 is the anti-freezing pressure reducing device for natural gas structure pie graph of prior art.
Fig. 2 is an anti-freezing pressure reducing device for natural gas structural representation of the present invention.
Fig. 3 is the push pin device structural representation.
Fig. 4 is the decompressor structural representation of band heat-conducting piece.
Wherein illustrate:
1, valve body, 2, suction port, 3, push pin device, 4, air outlet, 5, (low pressure) barometer, 6, controlling device, 7, intercommunicating pore, 8, (high pressure) barometer, 9, drain pan, 10, upper casing, 11, ring washer, 12, stabilizing spring, 13, trim ring, 14-15-16, diaphragm unit, 17, groove, 18, inlet hole platform, 19, (low pressure) barometer interface, 20, (high pressure) barometer interface, 21, thimble, 22, sealing cap, 23, blocking, 24, mast, 25, isolation pad, 26, working spring, 27, cover for seat, 28, following screw thread, 29, go up screw thread, 30, heat-conducting piece.
Embodiment
Be described further below in conjunction with implementing side example and accompanying drawing thereof.
As shown in Figure 1: rock gas, combustion gas reduction valve are usually used in pipeline, gas cylinder and the cylinder manifold marshalling.Mainly by valve body 1, air inlet/ outlet 2,4, barometer 5,8, controlling device 6 and push pin device 3 are formed.Its push pin device is positioned at the A position, and its thimble, stage clip are directly installed on the valve body wall by the blocking screw.Owing to compact structure, the influence that temperature reduces during work is very big, and the pressure conversion when single-stage is used is less, needs the decompression target of many 2～3 grades of ability realizations from 25MPa to 0.8MPa.Inlet hole on its inlet hole platform and diaphragm unit can be disconnected with sealing gland when regulating.Then will soon be frozen in when degree of carrying on the arm single-stage is used greatly.The 7th, intercommunicating pore, logical atmosphere.Ring washer 11 and stabilizing spring 12 all are the members of controlling device.
Fig. 2,3 is depicted as the embodiment of anti-freezing pressure reducing device for natural gas of the present invention.It comprises valve body 1, air inlet/ outlet 2,4, barometer interface 19,20, the heat-conducting piece 30 of diaphragm unit 14,15,16 and controlling device 6 thereof, push pin device 3 and a heat transmission, it is characterized in that said push pin device is the push pin device of a spreading, be located at the valve body below, its thimble is arranged in the gas port on the inlet hole platform, and the working spring under the thimble is located at and extends in the external cover for seat, and the lower end of cover for seat is connected with heat-conducting piece.This heat-conducting piece is equivalent to the radiator that computer center's processor (CPU) chip is used.Anti-its road and use it makes it to absorb heat cold scattering in other words.
Its valve body 1 is made up of drain pan 9 and upper casing 10, is provided with inlet hole platform 18 in the drain pan air chamber, and the surface of this inlet hole platform adds the groove 17 that an air guide is used.Like this, when regulating the diaphragm balance, just be unlikely between inlet hole on its inlet hole platform 18 and the diaphragm unit that sealing gland is disconnected.Described controlling device 6 comprises a threaded guide rod, and its pitch is 1 millimeter.Described diaphragm unit is made up of attic base 14, diaphragm 15, link 16, and diaphragm 15 wherein is for strengthening the rubber disk, and thickness is 〉=3 millimeters.It is relevant with bearing capacity.
Gas port on this inlet hole platform is a circular hole, passes movable thimble in the hole, and the hole platform is 3～5 millimeters to the distance of diaphragm unit bottom surface.These two parameters can be selected according to the difference of gas flow.
The push pin device of Fig. 3 is the push pin device that has prolonged, and is used for substituting the related device at Figure 1A position.This push pin device is made up of thimble 21, sealing cap 22, blocking 23, mast 24, working spring 26, cover for seat 27, and cover for seat 27 is threaded by last screw thread 29 with the drain pan 9 of valve body, and cover for seat 27 is threaded by following screw thread 28 conducts with heat-conducting piece.In case of necessity, can add heat-conducting glue between its screw thread earlier heat-conducting piece is installed again.26 set isolation pad of mast 24 and working spring, 25 double pad and heat insulation double actions.
The cross section of its thimble 21 also can be square.By the gap air inlet between the gas port on thimble and the inlet hole platform.
Figure 4 shows that the decompressor structural assembly of band heat-conducting piece.Push pin device 3 and heat-conducting piece 30 are equipped with in valve body 1 below.They are main inventive points of innovation and creation.Illustrated push pin device 3 is the suitable external push pin device that prolonged, and is installed on the drain pan 9.Increased rubber seal plug, mast, isolation pad or pad.Following heat-conducting piece 30 plays the cold scattering effect for valve body.It will absorb the ambient temperature in the atmosphere, make the push pin device proper functioning, and make valve body improve temperature by transmission of heat, play antifreeze effect.And the suitable variation different of the heat-conducting area of heat-conducting piece according to the specification of product with operating ambient temperature.
During work, controlling device 6 and push pin device 3 in the valve body 1 have set diaphragm unit in the equilibrium position.Suction port 2 inserts the high-pressure air source end, and air outlet 4 connects the low-voltage customer pipeline, installs barometer 8,5.High pressure barometer 8 is contained on the barometer interface 20 vertical with suction port 2.The push pin device assembly is installation in position also.At this moment, open gas source valve, pressurized gas enter air chamber, constantly cooling, and from air outlet output low-pressure gas, valve body air chamber temperature tends to balance gradually.If this valve of Temporarily Closed, as long as the handwheel rotation retreats, by pushing up on the working spring, the exterior edge face of sealing cap can be sealed gas port.By regulating threaded guide rod, can read the pressure or the variation of output gas from low-pressure gage.Heat radiation is safeguarded very convenient.
Single-stage anti-freezing pressure reducing device for natural gas of the present invention, the major technology parameter area is:
Decompression: 20～25MPa～0.3～0.8MPa;
Heat-conducting piece external dimension 〉=valve body;
Source of the gas feed air temperature: 0 ℃;
Ambient operating temperature :-5 ℃;
Air chamber temperature :≤-40 ℃.
Claims (8)
1, a kind of anti-freezing pressure reducing device for natural gas, comprise valve body (1), air inlet/outlet (2,4), barometer interface (19,20), diaphragm unit (14,15,16), controlling device (6), the heat-conducting piece (30) of a push pin device (3) and a heat transmission, it is characterized in that said push pin device (3) is the push pin device of a spreading, it is located at valve body (1) below, the thimble (21) of push pin device (3) is arranged in the gas port on the inlet hole platform (18), working spring under the thimble (26) is located at and extends in the external cover for seat (27), and the lower end of cover for seat is connected with heat-conducting piece (30).
2, anti-freezing pressure reducing device for natural gas according to claim 1 is characterized in that said valve body (1) is made up of drain pan (9) and upper casing (10), is provided with inlet hole platform (18) in the drain pan air chamber, and the surface of this inlet hole platform is provided with the groove (17) that air guide is used.
3, anti-freezing pressure reducing device for natural gas according to claim 1 and 2 is characterized in that the last hole of inlet hole platform (18) platform is 3～5 millimeters to the distance of diaphragm unit bottom surface.
4, anti-freezing pressure reducing device for natural gas according to claim 1, it is characterized in that said push pin device (3) is made up of thimble (21), sealing cap (22), blocking (23), mast (24), working spring (26), cover for seat (27), the drain pan (9) of cover for seat (27) and valve body is for being threaded, and cover for seat (27) and heat-conducting piece (30) are for being threaded.
5, anti-freezing pressure reducing device for natural gas according to claim 4 is characterized in that being provided with isolation pad (25) between said mast (24) and working spring (26).
6, according to claim 1 or 4 described anti-freezing pressure reducing device for natural gas, the cross section that it is characterized in that said thimble (21) is square.
7, anti-freezing pressure reducing device for natural gas according to claim 1 is characterized in that said controlling device (6) comprises a threaded guide rod, and its pitch is 1 millimeter.
8, anti-freezing pressure reducing device for natural gas according to claim 1 is characterized in that the diaphragm (15) in the said diaphragm unit is reinforcement rubber disk, and thickness is 〉=3 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100501960A CN100491788C (en) | 2006-04-05 | 2006-04-05 | Anti-freezing pressure reducing device for natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100501960A CN100491788C (en) | 2006-04-05 | 2006-04-05 | Anti-freezing pressure reducing device for natural gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101050823A CN101050823A (en) | 2007-10-10 |
| CN100491788C true CN100491788C (en) | 2009-05-27 |
Family
ID=38782369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100501960A Expired - Fee Related CN100491788C (en) | 2006-04-05 | 2006-04-05 | Anti-freezing pressure reducing device for natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100491788C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051247A (en) * | 2016-07-13 | 2016-10-26 | 成都安程通科技有限公司 | Pressure reducing valve for supplying gas to natural gas vehicle |
| CN109519573B (en) * | 2018-12-20 | 2023-07-25 | 锦州安燃高能切割气有限公司 | Low temperature resistant pressure reducer |
| CN114849095A (en) * | 2022-05-12 | 2022-08-05 | 爵格能源科技(苏州)有限公司 | Working method of breathing air pressure reduction system suitable for emergency shelter of shelter |
-
2006
- 2006-04-05 CN CNB2006100501960A patent/CN100491788C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101050823A (en) | 2007-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206111487U (en) | Compressor valve organizes assembly structure | |
| CN100491788C (en) | Anti-freezing pressure reducing device for natural gas | |
| CN205190864U (en) | Cartridge formula air throttle | |
| CN203500849U (en) | Equipment for reducing pressure of natural-gas cylinder | |
| CN203686277U (en) | Safety relief valve | |
| CN104633264B (en) | Gas pressure reducing valve | |
| CN103672011B (en) | A kind of compound is fallen apart on Winchester disk valve gap deep cooling and is filled formula fire-proof ball valve | |
| CN200958639Y (en) | Anti-freezing natural-gas pressure-release valve | |
| CN202812354U (en) | Thread plug-in type pressure-reducing valve | |
| CN101520063B (en) | Constant-pressure water evaporator suitable for aerospace craft | |
| CN209278556U (en) | Hydrogen-feeding system integral type regulator | |
| CN203784398U (en) | Pressure sustaining valve | |
| CN205383301U (en) | High temperature high pressure steam valve | |
| CN101725822A (en) | Adjustable water drainage valve with elastic steel ball sealing | |
| CN204901338U (en) | Multi -functional valve of liquefied natural gas gas cylinder | |
| CN210461825U (en) | Gas safety relief valve | |
| CN208381452U (en) | A kind of cylinder valve pneumatic actuator component | |
| CN205445962U (en) | Compressor unloading valve | |
| CN207777692U (en) | A kind of backflow preventer | |
| CN201902565U (en) | Stepless adjustable mechanical servo switch air intake valve | |
| CN1815071A (en) | Vacuum release valve for cold-storag container | |
| CN206522505U (en) | A kind of sanitation-grade constant pressure regulating valve | |
| CN2289919Y (en) | Bi-pass valve | |
| CN202811305U (en) | Cylinder block oil pressure regulating device for diaphragm compressor | |
| CN1818455B (en) | Air pressure reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20090527 Termination date: 20110405 |