CN202914836U - External-thread flange head pressure regulator - Google Patents
External-thread flange head pressure regulator Download PDFInfo
- Publication number
- CN202914836U CN202914836U CN 201220686592 CN201220686592U CN202914836U CN 202914836 U CN202914836 U CN 202914836U CN 201220686592 CN201220686592 CN 201220686592 CN 201220686592 U CN201220686592 U CN 201220686592U CN 202914836 U CN202914836 U CN 202914836U
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- regulation
- control
- cover
- control valve
- outside thread
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Abstract
The utility model discloses an external-thread flange head pressure regulator which comprises a flange inlet pipe, an external thread outlet pipe, a regulation valve rod, a regulation spring, a regulation valve core, a lower end cover and a regulation diaphragm, wherein the inlet small pipe diameter connected with the flange inlet pipe and the outlet large pipe diameter connected with the external thread outlet pipe are separated by a regulation valve seat; a valve core tray fixes the regulation valve core under the regulation valve seat in a closed manner on the lower middle part of the regulation valve rod; the lower section of the regulation valve rod is in sliding fit with a hole of a pressure regulation seat; the lower end cover is in closed fixation with the bottom plane of the pressure regulation seat; a regulation cover external thread is connected with a regulation cover internal thread of a regulation rotation cover at the upper end of a membrane cover cylinder of a regulation membrane cover; a regulation cover bottom ring fixes the upper end of the regulation spring in the regulation rotation cover; a regulation membrane cover ring fixes the lower end of the regulation spring on a regulation membrane cover piece; an isolation cavity is communicated with the outlet large pipe diameter through a cavity channel; and a regulation membrane channel is communicated with the outlet large pipe diameter in a regulation space formed between the regulation diaphragm and a regulation membrane support.
Description
Technical field
The utility model relates to a kind of LNG Liquefied natural gas transmission pipeline network corollary equipment that belongs to, and is specifically related to be applied to a kind of outside thread flange head pressure governor on the city gas conveyance conduit.
Background technique
At present, gas pressure regulator, governor is widely used on the city gas conveyance conduit.Chinese patent literature notification number CN2636019 discloses a kind of gas pressure regulator, governor, by the main film between valve body, loam cake, bottom, valve port, the diaphragm lower casing that is connected to valve body top, diaphragm upper casing, the diaphragm upper and lower shell, the valve rod being located at the balance film between homophony spring, balance film inner pallet and the loam cake on the diaphragm support and passing loam cake, balance film, balance film inner pallet, main film, pallet and be connected with valve, and the formations such as valve that are connected to valve rod bottom, valve port below.Also be provided with shut-off means in the valve body chamber, investing inboard, valve body air outlet has cutting-off controlling mechanism.Chinese patent literature notification number CN2432411 discloses a kind of gas pressure regulator, governor, and the valve body of pressure governor adopts the header structure, in establish valve seat and valve port, wherein safety cut-off valve and main pressure regulator valve are connected on the same header; Main voltage regulator adopts the lever form with the horizontal type structure of horizontal valve rod connection valve mouth; Safety cut-off valve adopts the pin card that links to each other with top cover firmly to cut off stem structure.Above-mentioned the deficiencies in the prior art part is: with on the pipeline that the air outlet of gas pressure regulator, governor links to each other a diffusion valve must be installed, therefore increased cost, be not easy to install and safeguard.The import of the gas pressure regulator, governor valve body of above-mentioned prior art and outlet size are basically identical; reach more greatly in the larger situation of the pressure reduction of valve body inlet/outlet at flow; outlet pressure can produce some fluctuations; the local disorders that the gas of outlet occurs; cause valve body to send larger noise; even the noises such as howling appear, be unfavorable for environmental protection.
Summary of the invention
Technical problem to be solved in the utility model provides a kind ofly to be possessed the regulation and control spool and is in all the time accurate centering regulating flow size with the regulation and control valve seat, and a kind of outside thread flange head pressure governor of longer service life.
For solving the problems of the technologies described above, the following technological scheme of the utility model: a kind of outside thread flange head pressure governor, comprise flange inlet tube, outside thread outer pipe, regulation and control valve rod, regulation and control spring, regulation and control spool, lower end stifle and regulation and control barrier film, as improvement: regulated and control valve seat between the outlet Large Diameter Pipeline that the import pipe with small pipe diameter that the flange inlet tube is ined succession and outside thread outer pipe are ined succession and keep apart; There is the airtight regulation and control spool that is fixed wtih of spool pallet to be positioned under the regulation and control valve seat on the regulation and control position, valve rod middle and lower part; Regulation and control valve rod hypomere and pressure regulating seat hole are slidingly matched, and lower end stifle and pressure regulating seat bottom plane are airtight fixing; Regulation and control valve rod upper end has setscrew nut, regulation and control film gasket, regulation and control barrier film, regulation and control membrane cover sheet and gland nut successively; Be positioned on the cone valve of regulation and control valve seat top the isolation cavity is arranged, the regulation and control film holder of ining succession of isolation cavity top, regulation and control membrane cover lower end circumferential plane will be regulated and control the airtight regulation and control film holder upper end circumferential plane that is fixed on of barrier film, have regulation and control to cover outside thread on the membrane cover cylinder of regulation and control membrane cover and link to each other with the adjustable cap internal thread of regulating rotary cover; Regulating in the rotary cover has the adjustable cap foundation ring to be fixed wtih the upper end of Regulation spring; There is regulation and control membrane cover circle to be fixed wtih the lower end of Regulation spring on the regulation and control membrane cover sheet; The isolation cavity has cavity passage to be connected with exporting between the Large Diameter Pipeline; The regulation and control space that forms between regulation and control barrier film and the regulation and control film holder has the membrane channels of regulation and control being communicated with the outlet Large Diameter Pipeline.
As further improvement: the isolation cavity with regulate and control between the space low pressure sealing ring is arranged; Between isolation cavity and the import pipe with small pipe diameter high pressure sealing ring is arranged, between isolation cavity and the import pipe with small pipe diameter high pressure sealing ring is arranged.
As further improvement: outlet Large Diameter Pipeline diameter is between 60 to 70 millimeters, and outlet Large Diameter Pipeline diameter is 2 to 4 times of import pipe with small pipe diameter diameter.
As further improvement: the adjusting control valve shank diameter is between 6 to 7 millimeters; Adjusting control valve block hole area at 60 square millimeters between 70 square millimeters.
As further improvement: the regulation and control diaphragm area is between 60000 square millimeters to 70000 square millimeters.
The beneficial effects of the utility model are: adopt regulation and control valve rod hypomere and pressure regulating seat hole sliding matching structure, guarantee to regulate and control the relative adjusting control valve of spool seat and put and be in all the time accurate aligning and be not offset longer service life; Regulation and control the space and the import pipe with small pipe diameter between set up the isolation cavity, by cavity passage so that the pressurized gas of import pipe with small pipe diameter can never have influence on regulation and control the space upper regulation and control barrier film; In the utility model, outlet Large Diameter Pipeline diameter is 2 to 4 times of import pipe with small pipe diameter diameter, is conducive to improve after the pressure drop of working off one's feeling vent one's spleen is low, and gas makes outlet pressure more steady, thereby reduced noise in the situation of the local disorders of outlet appearance.Flange inlet tube and the collocation of flange outer pipe arrange, and convenient the connection carries especially.The utility model is novel, solved safety problem in the LNG Liquefied natural gas course of conveying with its unique texture, saved the stop valve that in the past matched with it.
Description of drawings
Fig. 1 is the cross-sectional view that the utility model is in the minimum discharge working state;
Fig. 2 is the cross-sectional view that the utility model is in the peak rate of flow working state.
Embodiment
In Fig. 1 and Fig. 2, a kind of outside thread flange head pressure governor, comprise flange inlet tube 10, outside thread outer pipe 20, regulation and control valve rod 30, regulation and control spring 50, regulation and control spool 70, lower end stifle 44 and regulation and control barrier film 90, as improvement: regulated and control valve seat 83 between the outlet Large Diameter Pipeline 22 that the import pipe with small pipe diameter 11 that flange inlet tube 10 is ined succession and outside thread outer pipe 20 are ined succession and keep apart; There are the spool pallet 37 airtight regulation and control spools 70 that are fixed wtih to be positioned under the regulation and control valve seat 83 on the regulation and control position, valve rod 30 middle and lower part; Regulation and control valve rod 30 hypomeres and pressure regulating seat hole 43 are slidingly matched, and lower end stifle 44 is airtight fixing with pressure regulating seat bottom plane 48; Regulation and control valve rod 30 upper ends have setscrew nut 35, regulation and control film gasket 53, regulation and control barrier film 90, regulation and control membrane cover sheet 52 and gland nut 51 successively; Be positioned on the cone valve 39 of regulation and control valve seat 83 tops isolation cavity 77 is arranged, the regulation and control film holder 91 of ining succession of isolation cavity 77 tops, regulation and control membrane cover 92 lower end circumferential plane will regulate and controls the barrier film 90 airtight regulation and control film holder 91 upper end circumferential plane that are fixed on, and membrane cover cylinder 99 upper ends of regulation and control membrane cover 92 have regulation and control to cover outside thread 95 to link to each other with the adjustable cap internal thread 59 of adjusting rotary cover 57; Regulating in the rotary cover 57 has adjustable cap foundation ring 56 to be fixed wtih the upper end of Regulation spring 50; There is regulation and control membrane cover circle 54 to be fixed wtih the lower end of Regulation spring 50 on the regulation and control membrane cover sheet 52; Isolation cavity 77 has cavity passage 27 to be connected with exporting between the Large Diameter Pipeline 22; Regulation and control barrier film 90 has regulation and control membrane channels 29 being communicated with outlet Large Diameter Pipeline 22 with the regulation and control space 19 of regulating and control formation between the film holder 91.
As further improvement: isolation cavity 77 with regulate and control between the space 19 low pressure sealing ring 72 is arranged; Between isolation cavity 77 and the import pipe with small pipe diameter 11 high pressure sealing ring 71 is arranged, between isolation cavity 77 and the import pipe with small pipe diameter 11 high pressure sealing ring 71 is arranged.
As further improvement: outlet Large Diameter Pipeline 22 diameters are between 60 to 70 millimeters, and outlet Large Diameter Pipeline 22 diameters are 2 to 4 times of import pipe with small pipe diameter 11 diameters.
As further improvement: regulation and control valve rod 30 diameters are between 6 to 7 millimeters; Regulation and control valve seat 83 via area at 60 square millimeters between 70 square millimeters.
As further improvement: regulation and control barrier film 90 areas are between 60000 square millimeters to 70000 square millimeters.
Among the embodiment, outlet Large Diameter Pipeline 22 diameters are 66 millimeters, and import pipe with small pipe diameter 11 diameters are 22 millimeters, and outlet Large Diameter Pipeline 22 diameters are 3 times of import pipe with small pipe diameter 11 diameters.
Among the embodiment, regulation and control barrier film 90 areas are 66000 square millimeters.
Among Fig. 1, when being in the minimum discharge working state, when being arranged in regulation and control space 19 gases to the active force of regulation and control barrier film 90 during greater than regulation and control spring 50, regulation and control valve rod 30 moves up with the regulation and control spool 70 that is fixed on the spool pallet 37, regulation and control spool 70 reduces with the decompression slit that regulation and control valve seat 83 consists of, the pressurized gas at import pipe with small pipe diameter 11 places are behind the decompression slit that regulation and control spool 70 and regulation and control valve seat 83 consist of, and the low-pressure gas that enters into outlet Large Diameter Pipeline 22 also reduces.
When being in peak rate of flow working state working state among Fig. 2, along with the low-pressure gas that enters into outlet Large Diameter Pipeline 22 constantly reduces, when being arranged in regulation and control space 19 gases to the amount of force of regulation and control barrier film 90 during in regulation and control spring 50, regulation and control valve rod 30 moves down with the regulation and control spool 70 that is fixed on the spool pallet 37, regulation and control spool 70 increases again with the decompression slit that regulation and control valve seat 83 consists of, the pressurized gas at import pipe with small pipe diameter 11 places are behind the decompression slit that regulation and control spool 70 and regulation and control valve seat 83 consist of, and the low-pressure gas that enters into outlet Large Diameter Pipeline 22 also increases again.
Adopt regulation and control valve rod 30 hypomeres and pressure regulating seat hole 43 sliding matching structures, guarantee to regulate and control spool 70 and relatively regulate and control valve seats 83 positions and be in all the time accurate aligning and be not offset longer service life.
Regulation and control space 19 and import pipe with small pipe diameter 11 between set up the isolation cavity 77, there is high pressure sealing ring 71 effectively to isolate through having between low pressure sealing ring 72 and isolation cavity 77 and the import pipe with small pipe diameter 11 between isolation cavity 77 and the regulation and control space 19, between isolation cavity 77 and the import pipe with small pipe diameter 11 high pressure sealing ring 71 arranged.By cavity passage 27 so that the pressurized gas of import pipe with small pipe diameter 11 can never have influence on regulation and control space 19 upper regulation and control barrier film 90.
Among the embodiment, outlet Large Diameter Pipeline 22 diameters are 3 times of import pipe with small pipe diameter 11 diameters, are conducive to improve after the pressure drop of working off one's feeling vent one's spleen is low, and gas makes outlet pressure more steady in the situation that local disorders appears in outlet, thereby has reduced noise.
Claims (5)
1. outside thread flange head pressure governor, comprise flange inlet tube (10), outside thread outer pipe (20), regulation and control valve rod (30), regulation and control spring (50), regulation and control spool (70), lower end stifle (44) and regulation and control barrier film (90), it is characterized in that: kept apart by regulation and control valve seats (83) between the outlet Large Diameter Pipeline (22) that the import pipe with small pipe diameter (11) that flange inlet tube (10) is ined succession and outside thread outer pipe (20) are ined succession; There are the airtight regulation and control spools (70) that are fixed wtih of spool pallet (37) to be positioned under the regulation and control valve seats (83) on regulation and control valve rod (30) position, middle and lower part; Regulation and control valve rod (30) hypomere and pressure regulating seat hole (43) are slidingly matched, and lower end stifle (44) is airtight fixing with pressure regulating seat bottom plane (48); Regulation and control valve rods (30) upper end has setscrew nut (35), regulation and control film gasket (53), regulation and control barrier film (90), regulation and control membrane cover sheet (52) and gland nut (51) successively; Be positioned at regulation and control valve seats (83) top cone valve (39) on isolation cavity (77) is arranged, the isolation cavity (77) top in succession regulation and control film holder (91), regulation and control membrane cover (92) lower end circumferential plane will be regulated and control airtight regulation and control film holders (91) the upper end circumferential plane that is fixed on of barrier film (90), have regulation and control to cover outside thread (95) on the membrane cover cylinder (99) of regulation and control membrane covers (92) and link to each other with the adjustable cap internal thread (59) of regulating rotary cover (57); Regulating in the rotary cover (57) has adjustable cap foundation ring (56) to be fixed wtih the upper end of Regulation spring (50); There are regulation and control membrane cover circles (54) to be fixed wtih the lower end of Regulation spring (50) on the regulation and control membrane cover sheets (52); Isolation cavity (77) has cavity passage (27) to be connected with exporting between the Large Diameter Pipeline (22); Regulation and control barrier films (90) have regulation and control membrane channels (29) being communicated with outlet Large Diameter Pipeline (22) with the regulation and control space (19) of regulating and control formation between the film holders (91).
2. a kind of outside thread flange head pressure governor according to claim 1 is characterized in that: between isolation cavity (77) and the regulation and control spaces (19) low pressure sealing ring (72) is arranged; Between isolation cavity (77) and the import pipe with small pipe diameter (11) high pressure sealing ring (71) is arranged, between isolation cavity (77) and the import pipe with small pipe diameter (11) high pressure sealing ring (71) is arranged.
3. a kind of outside thread flange head pressure governor according to claim 1 is characterized in that: export Large Diameter Pipeline (22) diameter between 60 to 70 millimeters, and outlet Large Diameter Pipeline (22) diameter is 2 to 4 times of import pipe with small pipe diameter (11) diameter.
4. a kind of outside thread flange head pressure governor according to claim 1 is characterized in that: regulate and control valve rod (30) diameter between 6 to 7 millimeters; Regulation and control valve seat (83) via area at 60 square millimeters between 70 square millimeters.
5. a kind of outside thread flange head pressure governor according to claim 1 is characterized in that: regulate and control barrier film (90) area between 60000 square millimeters to 70000 square millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686592 CN202914836U (en) | 2012-12-01 | 2012-12-01 | External-thread flange head pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686592 CN202914836U (en) | 2012-12-01 | 2012-12-01 | External-thread flange head pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914836U true CN202914836U (en) | 2013-05-01 |
Family
ID=48163153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220686592 Expired - Fee Related CN202914836U (en) | 2012-12-01 | 2012-12-01 | External-thread flange head pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914836U (en) |
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2012
- 2012-12-01 CN CN 201220686592 patent/CN202914836U/en not_active Expired - Fee Related
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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: 20130501 Termination date: 20131201 |