CN203009948U - Internal-external thread head pressure regulating valve - Google Patents
Internal-external thread head pressure regulating valve Download PDFInfo
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- CN203009948U CN203009948U CN 201220666693 CN201220666693U CN203009948U CN 203009948 U CN203009948 U CN 203009948U CN 201220666693 CN201220666693 CN 201220666693 CN 201220666693 U CN201220666693 U CN 201220666693U CN 203009948 U CN203009948 U CN 203009948U
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Abstract
An internal-external thread head pressure regulating valve comprises a regulating separating membrane and a safety separating membrane, an inlet small pipe diameter connected with an external thread inlet pipe and an outlet big pipe diameter connected with an internal thread outlet pipe are separated by a regulating valve seat, and a valve element tray is arranged on the lower middle portion of a regulating valve rod and fixes a regulating valve element under the regulating valve seat in a closed mode. The outlet big pipe diameter is communicated with a cylindrical ring seat arranged below the regulating valve seat, and a safety membrane support is fixed at the lower end of the cylindrical ring seat in a closed mode. The circumferential plane of the upper end of a safety membrane cover on the safety valve seat fixes the safety separating membrane on the circumferential plane of the lower end of the safety membrane support. A safety valve hole is formed in the bottom portion of the safety valve seat and is in sliding fit with the outer circle of the safety valve element. A pressure maintaining hole is arranged above the safety valve hole and is connected with the safety membrane cover, a high-pressure hole is arranged below the safety valve hole and is communicated with the inlet small pipe diameter, and a low-pressure hole is arranged below the safety valve hole and is communicated with the outlet big pipe diameter. A left channel, a right channel, a left seal ring, a right seal ring, a left switching nut matched with a left screw bolt and a right switching nut matched with a right screw bolt are symmetrically arranged on the safety valve element.
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 internal and external threads head pressure regulator valve on the city gas conveyance conduit.
Background technique
At present, gas pressure regulator, governor is widely used on the city gas conveyance conduit, and maximum potential safety hazard is that existing pressure regulator valve does not all have self closing function, must separately establish the stop valve series operation and could thoroughly close, and so uses very inconvenient.And the import of traditional gas pressure regulator, governor valve body is basically identical with the outlet size; in the situation that flow reaches more greatly the pressure reduction of valve body inlet/outlet is larger; outlet pressure can produce some fluctuations; the local disorders that the gas of outlet occurs; cause valve body to send larger noise; the noises such as howling even occur, be unfavorable for environmental protection.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of self closing function that possesses, in use safe and reliable especially a kind of internal and external threads head pressure regulator valve.
For solving the problems of the technologies described above, the following technological scheme of the utility model: a kind of internal and external threads head pressure regulator valve, comprise regulation and control barrier film and burst diaphragm, as improvement: kept apart by the regulation and control valve seat between the outlet Large Diameter Pipeline that the import pipe with small pipe diameter that the outside thread inlet tube is ined succession and internal thread outer pipe are ined succession, regulation and control have the airtight regulation and control spool that is fixed wtih of spool pallet to be positioned under described regulation and control valve seat on position, valve rod middle and lower part; Described regulation and control valve rod lower end is fixed wtih described burst diaphragm center with the double nut shim pack; Described 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 is the airtight described regulation and control film holder upper end circumferential plane that is fixed on of described regulation and control barrier film, and on the regulation and control membrane cover, cylindrical end has regulation and control cover outside thread to be connected with the adjustable cap internal thread of adjusting rotary cover; Regulate the upper end that has the adjustable cap foundation ring to be fixed wtih Regulation spring in rotary cover on the bottom plane; There is regulation and control membrane cover circle to be fixed wtih the lower end of Regulation spring on described regulation and control membrane cover sheet; Described isolation cavity has cavity passage to be connected with outlet between Large Diameter Pipeline; The regulation and control space that forms between described regulation and control barrier film and regulation and control film holder has the regulation and control membrane channels being communicated with the outlet Large Diameter Pipeline; Described outlet Large Diameter Pipeline is being communicated with the cylinder ring seat that is positioned at regulation and control valve seat below, and cylinder ring seat lower end is airtight is fixed wtih the rupture disk holder; Rupture disk on emergency valve seat covers the end circumferential plane with the airtight described rupture disk holder lower end circumferential plane that is fixed on of described burst diaphragm; The safe valve opening safe spool cylindrical that is being slidably matched is arranged under described emergency valve seat; Described safe valve opening top has the pressurize hole to receive safe membrane cover, and safe valve opening below has respectively pressure hole to be communicated to the import pipe with small pipe diameter and the low pressure hole is communicated to the outlet Large Diameter Pipeline; Being arranged symmetrically with left passage and right passage, left seal ring and right seal ring and left double-screw bolt on described safe spool coordinates left cut to change nut and right double-screw bolt coordinates right cut to change nut.
As further improvement: between described isolation cavity and regulation and control spaces, low pressure sealing ring is arranged; Between described isolation cavity and import pipe with small pipe diameter, high pressure sealing ring is arranged.
As further improvement: described outlet Large Diameter Pipeline diameter is between 80 to 90 millimeters, and outlet Large Diameter Pipeline diameter is 2 to 4 times of import pipe with small pipe diameter diameter.
As further improvement: described adjusting control valve shank diameter is between 8 to 9 millimeters; Adjusting control valve block hole area at 80 square millimeters between 90 square millimeters.
As further improvement: described regulation and control diaphragm area is between 8000 square millimeters to 9000 square millimeters.
As further improvement: described burst diaphragm area is between 800 square millimeters to 900 square millimeters.
The beneficial effects of the utility model are: regulation and control the space and the import pipe with small pipe diameter between set up the isolation cavity, by cavity passage make 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.Outside thread inlet tube and the collocation of internal thread outer pipe arrange, and convenient the connection carries especially.Simultaneously set up burst diaphragm in regulation and control valve rod lower end, change nut and right cut by the left cut in relief valve assembly and change nut the mobile of safe spool controlled, guarantee that the utility model possesses self closing function in off position.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 utility model cross-sectional view in off position;
Fig. 2 is the enlarged view in the included scope of the residing double dot dash line of relief valve assembly 60 in Fig. 1;
Fig. 3 is the cross-sectional view that in Fig. 1, the utility model is in opening state, has omitted regulation and control membrane cover 92 in figure, has regulated rotary cover 57 and regulation and control spring 50.
Embodiment
In Fig. 1 and Fig. 2, a kind of internal and external threads head pressure regulator valve, comprise regulation and control barrier film 90 and burst diaphragm 40, as improvement: kept apart by regulation and control valve seat 83 between the outlet Large Diameter Pipeline 22 that the import pipe with small pipe diameter 11 that outside thread inlet tube 10 is ined succession and internal thread outer pipe 20 are ined succession, the regulation and control valve rod has the airtight regulation and control spool 70 that is fixed wtih of spool pallet 37 to be positioned under described regulation and control valve seat 83 on 30 positions, middle and lower part; Described regulation and control valve rod 30 lower ends are fixed wtih described burst diaphragm 40 centers with double nut shim pack 34; Described 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 are the airtight described regulation and control film holder 91 upper end circumferential plane that are fixed on of described regulation and control barrier film 90, and on regulation and control membrane cover 92, cylindrical end has regulation and control cover outside thread 95 to be connected with the adjustable cap internal thread 59 of adjusting rotary cover 57; Regulate the upper end that has adjustable cap foundation ring 56 to be fixed wtih Regulation spring 50 on rotary cover 57 interior bottom plane; There is regulation and control membrane cover circle 54 to be fixed wtih the lower end of Regulation spring 50 on described regulation and control membrane cover sheet 52; Described isolation cavity 77 has cavity passage 27 to be connected with outlet between Large Diameter Pipeline 22; The regulation and control space 19 that forms between described regulation and control barrier film 90 and regulation and control film holder 91 has regulation and control membrane channels 29 being communicated with outlet Large Diameter Pipeline 22; Described outlet Large Diameter Pipeline 22 is being communicated with the cylinder ring seat 84 that is positioned at regulation and control valve seat 83 belows, and cylinder ring seat 84 lower ends are airtight is fixed wtih rupture disk holder 42; Safe membrane cover 41 upper end circumferential plane on emergency valve seat 86 are fixed on described rupture disk holder 42 lower end circumferential plane with described burst diaphragm 40 is airtight; Described emergency valve seat has safe valve opening 46 safe spool 64 cylindricals that are being slidably matched for 86 times; Described safe valve opening 46 tops have pressurize hole 65 to receive safe membrane cover 41, and safe valve opening 46 belows have respectively pressure hole 14 to be communicated to import pipe with small pipe diameter 11 and low pressure hole 24 is communicated to outlet Large Diameter Pipeline 22; Being arranged symmetrically with left passage 16 and right passage 26, left seal ring 61 and right seal ring 62 and left double-screw bolt 69 on described safe spool 64 coordinates left cuts to change nut 67 and right double-screw bolt 68 coordinates right cuts to change nut 66.
As further improvement: between described isolation cavity 77 and regulation and control spaces 19, low pressure sealing ring 72 is arranged; Between described isolation cavity 77 and import pipe with small pipe diameter 11, high pressure sealing ring 71 is arranged.
As further improvement: described outlet Large Diameter Pipeline 22 diameters are between 80 to 90 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: described regulation and control valve rod 30 diameters are between 8 to 9 millimeters; Regulation and control valve seat 83 via area at 80 square millimeters between 90 square millimeters.
As further improvement: described regulation and control barrier film 90 areas are between 8000 square millimeters to 9000 square millimeters.
As further improvement: described burst diaphragm 40 areas are between 800 square millimeters to 900 square millimeters.
In embodiment, outlet Large Diameter Pipeline 22 diameters are 84 millimeters, and import pipe with small pipe diameter 11 diameters are 28 millimeters, and outlet Large Diameter Pipeline 22 diameters are 3 times of import pipe with small pipe diameter 11 diameters; Regulation and control barrier film 90 areas are 8400 square millimeters; Burst diaphragm 40 areas are at 840 square millimeters.
In Fig. 1, in the time of in off position, rotate simultaneously that nut 67 is changed in left cut and nut 66 is changed in right cut, make safe spool 64 move right, with left passage 16, pressure hole 14 and pressurize hole 65 are connected, utilization is positioned at import pipe with small pipe diameter 11 and is connecting to regulate and control the effect of valve rod 30 by burst diaphragm 40, relies on spool pallet 37 will regulate and control spool 70 and tightly touch regulation and control valve seat 83, guarantees self closed safe function.
In Fig. 3, when opening state, nut 67 is changed in the left cut of opposite spin simultaneously and nut 66 is changed in right cut, make safe spool 64 be moved to the left, with right passage 26, low pressure hole 24 and pressurize hole 65 are connected, the pressure that makes burst diaphragm 40 both sides be equated fully can not produce any interference to regulation and control valve rod 30.
Meanwhile, when being arranged in regulation and control space 19 gases to the active force of regulation and control barrier film 90 during less than regulation and control spring 50, regulation and control valve rod 30 moves down with the regulation and control spool 70 that is fixed on spool pallet 37, the decompression gap increase that regulation and control spool 70 and regulation and control valve seat 83 consist of, more pressurized gas at import pipe with small pipe diameter 11 places are behind regulation and control spool 70 and regulation and control valve seat 83 consist of decompression gap, and low-pressure gas enters into outlet Large Diameter Pipeline 22;
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 spool pallet 37, regulation and control spool 70 and regulation and control valve seat 83 consist of decompression gap reduces, the pressurized gas at import pipe with small pipe diameter 11 places are behind regulation and control spool 70 and regulation and control valve seat 83 consist of decompression gap, and the low-pressure gas that enters into outlet Large Diameter Pipeline 22 also reduces.
Outside thread inlet tube 10 arranges with 20 collocation of internal thread outer pipe, and convenient the connection carries especially.
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 isolating cavity 77 and regulating and controlling to have between space 19 between low pressure sealing ring 72 and isolation cavity 77 and import pipe with small pipe diameter 11, between isolation cavity 77 and import pipe with small pipe diameter 11, high pressure sealing ring 71 arranged.Make the pressurized gas of import pipe with small pipe diameter 11 can never have influence on the upper regulation and control barrier film 90 in regulation and control space 19 by cavity passage 27.
In 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 (6)
1. internal and external threads head pressure regulator valve, comprise regulation and control barrier film (90) and burst diaphragm (40), 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 outside thread inlet tube (10) is ined succession and internal thread outer pipe (20) are ined succession, regulation and control valve rod (30) has the airtight regulation and control spools (70) that are fixed wtih of spool pallet (37) to be positioned under described regulation and control valve seat (83) on the position, middle and lower part; Described regulation and control valve rod (30) lower end is fixed wtih described burst diaphragm (40) center with double nut shim pack (34); Described regulation and control valve rod (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 is airtight described regulation and control film holder (91) the upper end circumferential plane that is fixed on of described regulation and control barrier film (90), and the upper cylindrical end of regulation and control membrane covers (92) has regulation and control cover outside thread (95) to be connected with the adjustable cap internal thread (59) of adjusting rotary cover (57); Adjusting rotary cover (57) has adjustable cap foundation ring (56) to be fixed wtih the upper end of Regulation spring (50) on interior bottom plane; There are regulation and control membrane cover circles (54) to be fixed wtih the lower end of Regulation spring (50) on described regulation and control membrane cover sheet (52); There is cavity passage (27) to be connected between described isolation cavity (77) and outlet Large Diameter Pipeline (22); Described 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) that regulates and controls formation between film holders (91); Described outlet Large Diameter Pipeline (22) is being communicated with the cylinder ring seat (84) that is positioned at regulation and control valve seats (83) below, and cylinder ring seat (84) lower end is airtight is fixed wtih rupture disk holder (42); Safe membrane cover (41) upper end circumferential plane on emergency valve seat (86) is with airtight described rupture disk holder (42) the lower end circumferential plane that is fixed on of described burst diaphragm (40); Safe valve opening (46) safe spool (64) cylindrical that is being slidably matched is arranged under described emergency valve seat (86); Described safe valve opening (46) top has pressurize hole (65) to receive safe membrane cover (41), and safe valve opening (46) below has respectively pressure hole (14) to be communicated to import pipe with small pipe diameter (11) and low pressure hole (24) is communicated to outlet Large Diameter Pipeline (22); Being arranged symmetrically with left passage (16) and right passage (26), left seal ring (61) and right seal ring (62) and left double-screw bolt (69) on described safe spool (64) coordinates left cut to change nut (67) and nut (66) is changed in right double-screw bolt (68) cooperation right cut.
2. a kind of internal and external threads head pressure regulator valve according to claim 1, is characterized in that: between described isolation cavity (77) and regulation and control spaces (19), low pressure sealing ring (72) is arranged; Between described isolation cavity (77) and import pipe with small pipe diameter (11), high pressure sealing ring (71) is arranged.
3. a kind of internal and external threads head pressure regulator valve according to claim 1 is characterized in that: described outlet Large Diameter Pipeline (22) diameter is between 80 to 90 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 internal and external threads head pressure regulator valve according to claim 1, it is characterized in that: described regulation and control valve rod (30) diameter is between 8 to 9 millimeters; Regulation and control valve seat (83) via area at 80 square millimeters between 90 square millimeters.
5. a kind of internal and external threads head pressure regulator valve according to claim 1, it is characterized in that: described regulation and control barrier film (90) area is between 8000 square millimeters to 9000 square millimeters.
6. a kind of internal and external threads head pressure regulator valve according to claim 1, it is characterized in that: described burst diaphragm (40) area is between 800 square millimeters to 900 square millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666693 CN203009948U (en) | 2012-11-16 | 2012-11-16 | Internal-external thread head pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666693 CN203009948U (en) | 2012-11-16 | 2012-11-16 | Internal-external thread head pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009948U true CN203009948U (en) | 2013-06-19 |
Family
ID=48601545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220666693 Expired - Fee Related CN203009948U (en) | 2012-11-16 | 2012-11-16 | Internal-external thread head pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179769A (en) * | 2015-09-17 | 2015-12-23 | 付明 | Differential pressure plunger automatic pressure regulating valve |
-
2012
- 2012-11-16 CN CN 201220666693 patent/CN203009948U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179769A (en) * | 2015-09-17 | 2015-12-23 | 付明 | Differential pressure plunger automatic pressure regulating valve |
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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: 20130619 Termination date: 20131116 |