CN2937704Y - Pressurized valve - Google Patents
Pressurized valve Download PDFInfo
- Publication number
- CN2937704Y CN2937704Y CN 200620044162 CN200620044162U CN2937704Y CN 2937704 Y CN2937704 Y CN 2937704Y CN 200620044162 CN200620044162 CN 200620044162 CN 200620044162 U CN200620044162 U CN 200620044162U CN 2937704 Y CN2937704 Y CN 2937704Y
- Authority
- CN
- China
- Prior art keywords
- screw thread
- screw
- valve
- valve body
- shell
- 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
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- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to a pressure maintaining valve, which is composed of a regulating cap, a screw thread adjustment lever, a holding screw, a shaft bead flange, a grip nut, a screw top block, a spring, a shell, a valve body, a small gasket, a valve mouth, a neilsbed regulating nut, a rubber pad, a neilsbed regulating double-screw bolt, an adjustment needle, an offsetting spring, a big gasket and an end cap. Wherein, the one end of the screw thread adjustment lever is arranged in a threaded hole of the regulating cap by the holding screw, and the another end connected with the screw top block by a screw thread is arranged in the shell, moreover, the screw thread adjustment lever is connected with the valve body by means of the spring; the grip nut is arranged outside the one end of the shell; the shaft bead flange is arranged between the shell and the regulating cap; the valve body is connected with the valve mouth by thread, at the same time, the small gasket is arranged between the valve body and the valve mouth; the adjustment needle is arranged in a small hole of the valve mouth by means of the neilsbed regulating nut, the rubber pad and the neilsbed regulating double-screw bolt; the offsetting spring is arranged at the rear of the adjustment needle; the end cap is connected with the valve body by the big gasket. The utility model has the advantages that the adjustment is easy and the pressure is steady, meantime, the precision of the pressure maintaining valve is high.
Description
Technical field
The utility model relates to a kind of pressure maintaining valve, relates in particular to a kind of instrument that the contained gas of drilling process mud is analyzed and pressure maintaining valve of relevant supplementary equipment of being used for, and belongs to valve technology field.
Background technique
Gas analysis instrument and relevant supplementary equipment are in the Process of Oil Well Drilling the entrained oil gas of mud to be analyzed and provided the engineering staff with reference to essential instrument and equipment, therefore require this quasi-instrument that extraordinary stability and degree of precision will be arranged, and pressure maintaining valve plays crucial effects to the stability and the precision of this quasi-instrument, yet existing pressure maintaining valve voltage regulation result is poor, pressure regulation stepping numerical value change is big, fluctuation is big, ease for use is poor---and be difficult for being adjusted to required numerical value and regulate needs use microcephaly straight screwdriver, particularly anti-vibration performance is poor---and under the vibration condition, the atmospheric pressure value saltus step causes accuracy of instrument to change.
Summary of the invention
The purpose of this utility model is a kind of easy adjusting of invention, is difficult for saltus step and voltage stabilizing, the pressure maintaining valve that precision is high.
For realizing above purpose, the technical solution of the utility model provides a kind of pressure maintaining valve, it is characterized in that, by regulating cap, the threaded adjusting bar, Cock screw, shaft block ring, set screw nut, the screw thread jacking block, spring, shell, valve body, little sealing gasket, valve port, regulate the needle stand nut, rubber pad, regulate the needle stand double-screw bolt, metering needle, Returnning spring, big sealing gasket and tail cap are formed, threaded adjusting bar one end is located in the tapped hole of regulating cap by Cock screw, the other end and screw thread jacking block are placed in the shell by scyewed joint, and be connected with valve body by spring, shell one end outside is provided with set screw nut, and regulate between the cap and be provided with shaft block ring, valve body and valve port pass through scyewed joint, and between valve body and valve port, be equipped with little sealing gasket, metering needle is by regulating the needle stand nut, rubber pad, be located in the aperture of valve port with adjusting needle stand double-screw bolt, afterbody at metering needle is provided with Returnning spring, and the tail cap is connected with valve body by big sealing gasket.
The utility model adopts the screw thread jacking block to have screw thread jacking block guiding groove, cooperate with the set guiding of shell by screw thread jacking block guiding groove, make the screw thread jacking block keep straight line motion in the enclosure, the screw thread jacking block has the adjusting screw thread, the screw thread jacking block links to each other with the threaded adjusting bar by regulating screw thread, plays regulating action, makes adjusting more convenient, regulate good stability, be difficult for saltus step.
Advantage of the present utility model:
1. guarantee the instrument service precision;
2. make adjusting more convenient;
3. pressure surge when guaranteeing degree of regulation and preventing to regulate.
Description of drawings
Fig. 1 is a kind of pressure maintaining valve structural representation;
Fig. 2 is the valve body structure schematic representation;
Fig. 3 is shell and screw thread ejecting block schematic representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, be a kind of pressure maintaining valve structural representation, described a kind of pressure maintaining valve is formed by regulating cap 1, threaded adjusting bar 2, Cock screw 3, shaft block ring 4, set screw nut 5, screw thread jacking block 6, spring 7, shell 8, valve body 9, little sealing gasket 10, valve port 11, adjusting needle stand nut 12, rubber pad 13, adjusting needle stand double-screw bolt 14, metering needle 15, Returnning spring 16, big sealing gasket 17 and tail cap 18.
The cylindrical of described adjusting cap 1 has straight knurling, and has tapped hole, and a M3 fluting of screw-in awl is held Cock screw 3 in the tapped hole, bores the relative position of an end of end Cock screw 3 secured adjusted caps 1 and threaded adjusting bar 2 with the M3 fluting.
As shown in Figure 2, described screw thread jacking block 6 one sides are provided with screw thread jacking block guiding groove 21, be connected with shell 8 set guiding 22 by screw thread jacking block guiding groove 21, make screw thread jacking block 6 in regulator shell 8, keep straight line motion, be provided with in the middle of the screw thread jacking block 6 and regulate screw thread 20, regulating screw thread 20 is M5 * 0.8, screw thread jacking block 6 links to each other with threaded adjusting bar 2 the other ends by regulating screw thread 20, play regulating action, make adjusting more convenient, regulate good stability, be difficult for saltus step, threaded adjusting bar 2 is placed in the shell 8 by scyewed joint with screw thread jacking block 6, screw thread jacking block 6 one ends are provided with Regulation spring guiding counterbore 23, Regulation spring 7 one ends place in the Regulation spring guiding counterbore 23, answering the control surface roughness at the bottom of Regulation spring guiding counterbore 23 holes is Ra1.8, it is Ra1.8 that the control surface roughness is answered at Regulation spring 7 two ends, described Regulation spring 7 the other ends are inserted in the valve body 9 adjusted spring pilot holes 20 shown in Figure 3, it is Ra1.8 that the control surface roughness is answered in described Regulation spring pilot hole 20 bottoms, can make the adjusting good stability like this, be difficult for saltus step.
Threaded adjusting bar 2 is connected with valve body 9 by spring 7, as shown in Figure 3, described valve body 9 is by tracheae connection interface 24, Regulation spring pilot hole 25, wavy metal bourdon tube 26 and regulate 27 and form, tracheae connection interface 24 connects regulates 27, regulate 27 an outer wavy metal bourdon tube 26 that are provided with, regulate 27 1 end and be provided with Regulation spring pilot hole 25.
Shell 8 one end outsides are provided with and connect screw thread 19, the set screw nut 5 of screwing on, and regulate shaft block ring 4 is installed between the cap 1, valve body 9 passes through scyewed joint with valve port 11, and between valve body 9 and valve port 11, be equipped with little sealing gasket 10, metering needle 15 is by regulating needle stand nut 12, rubber pad 13 and regulate needle stand double-screw bolt 14 and insert in the aperture of valve ports 11, is provided with Returnning spring 16 at the afterbody of metering needle 15, is threaded onto on the valve body 9 after big sealing gasket 17 is installed at tail cap 18 screw mouth places.
Owing to pressure regulator valve will be connected with gas path pipe and be installed on the casing, so make three outside threads and be welded on the valve body.
The utility model is a kind of decompression venting valve, is mainly used in to stablize sample gas pressure.The contained gas of mud in the drilling process is deviate from,, after the pressure maintaining valve throttling, exported from pressure maintaining valve through the sample gas inlet input of gas analysis instrument.This moment, the delivery pressure of sample gas reduced, and the big I of this delivery pressure is adjusted by Regulation spring 7, turned clockwise when regulating cap 1, threaded adjusting bar 2 drives screw thread jacking block 6 by the screw thread transmission, and Regulation spring 7 is loosened, wavy metal bourdon tube 26 loosens, and outlet pressure reduces; Be rotated counterclockwise when regulating cap 1, threaded adjusting bar 2 drives screw thread jacking block 6 by the screw thread transmission, and Regulation spring 7 is compressed, and wavy metal bourdon tube 26 compresses, and outlet pressure increases.
The utility model reduces pressure according to air inlet restriction, the pressure balance suction pressure that relies on wavy metal bourdon tube 26 to produce by compression, play pressure stabilization function with this, it must be stable that gas analysis instrument requires the incoming pressure of sample gas, wave range must delivery pressure ± 0.5% within.And the effect of pressure maintaining valve is exactly to allow the sample gas incoming pressure that enters instrument be stabilized in this scope, and instrument can better be analyzed sample gas.
Claims (4)
1. pressure maintaining valve, it is characterized in that, by regulating cap (1), threaded adjusting bar (2), Cock screw (3), shaft block ring (4), set screw nut (5), screw thread jacking block (6), spring (7), shell (8), valve body (9), little sealing gasket (10), valve port (11), regulate needle stand nut (12), rubber pad (13), regulate needle stand double-screw bolt (14), metering needle (15), Returnning spring (16), big sealing gasket (17) and tail cap (18) are formed, threaded adjusting bar (2) one ends are located in the tapped hole of regulating cap (1) by Cock screw (3), the other end and screw thread jacking block (6) are placed in the shell (8) by scyewed joint, and be connected with valve body (9) by spring (7), shell (8) one end outsides are provided with set screw nut (5), between adjusting cap (1), be provided with shaft block ring (4), valve body (9) passes through scyewed joint with valve port (11), and between valve body (9) and valve port (11), be equipped with little sealing gasket (10), metering needle (15) is by regulating needle stand nut (12), rubber pad (13), be located in the aperture of valve port (11) with adjusting needle stand double-screw bolt (14), afterbody at metering needle (15) is provided with Returnning spring (16), and tail cap (18) is connected with valve body (9) by big sealing gasket (17).
2. a kind of pressure maintaining valve according to claim 1, it is characterized in that, described screw thread jacking block (6) one sides are provided with screw thread jacking block guiding groove (21), be connected with the set guiding of shell (8) (22) by screw thread jacking block guiding groove (21), be provided with in the middle of the screw thread jacking block (6) and regulate screw thread (20), an end is provided with Regulation spring guiding counterbore (23).
3. a kind of pressure maintaining valve according to claim 1 is characterized in that, described shell (8) one ends are provided with and connect screw thread (19).
4. a kind of pressure maintaining valve according to claim 1, it is characterized in that, described valve body (9) is made up of tracheae connection interface (24), Regulation spring pilot hole (25), wavy metal bourdon tube (26) and adjusting head (27), tracheae connection interface (24) connects regulates head (27), regulate the outer wavy metal bourdon tube (26) that is provided with of head (27), regulate head (27) one ends and be provided with Regulation spring pilot hole (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044162 CN2937704Y (en) | 2006-07-24 | 2006-07-24 | Pressurized valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044162 CN2937704Y (en) | 2006-07-24 | 2006-07-24 | Pressurized valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937704Y true CN2937704Y (en) | 2007-08-22 |
Family
ID=38361731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620044162 Expired - Fee Related CN2937704Y (en) | 2006-07-24 | 2006-07-24 | Pressurized valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2937704Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9673606B2 (en) | 2012-06-15 | 2017-06-06 | Flex-Cable | Pressurized electromechanical cable |
-
2006
- 2006-07-24 CN CN 200620044162 patent/CN2937704Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9673606B2 (en) | 2012-06-15 | 2017-06-06 | Flex-Cable | Pressurized electromechanical cable |
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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: 20070822 Termination date: 20110724 |