CN214428335U - Air release valve for downhole instrument - Google Patents
Air release valve for downhole instrument Download PDFInfo
- Publication number
- CN214428335U CN214428335U CN202120293355.XU CN202120293355U CN214428335U CN 214428335 U CN214428335 U CN 214428335U CN 202120293355 U CN202120293355 U CN 202120293355U CN 214428335 U CN214428335 U CN 214428335U
- Authority
- CN
- China
- Prior art keywords
- ring
- cavity
- sealing
- sealing ring
- installation
- 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.)
- Active
Links
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model provides a bleed valve for instrument in pit, it overcomes the installation difficulty between the combination seal part, and the shortcoming that the part installation is not in place for seal part simple to operate, part installation target in place, its simple structure, simple to operate, it is sealed reliable. The axial front end of skeleton is provided with the protruding ring in location, the center of skeleton sets up the mud passage hole that runs through along the axial, the axial front end of skeleton, the axial rear end is provided with first side protruding sealing ring platform and second side protruding sealing ring platform respectively, form device installation ring chamber between two side protruding sealing ring platforms, device installation ring chamber is used for installing corresponding device, the radial position cartridge of the preceding terminal surface of first side protruding sealing ring platform has first bleed valve body, the radial position cartridge of the rear end face of second side protruding sealing ring platform has second bleed valve body, first bleed valve body, second bleed valve body all includes stop screw, the piston rod, sealed O circle, compression spring.
Description
Technical Field
The utility model relates to a technical field of equipment gassing in the pit specifically is a bleed valve for instrument in the pit.
Background
In the installation of an underground instrument, all combined parts are usually sealed, air is compressed to a certain degree between the combined parts due to the existence of air, the resistance of the part installation is greatly increased, the installation is difficult, the part installation is not in place easily, and the performance of the instrument is influenced.
Disclosure of Invention
In view of the above problem, the utility model provides a bleed valve for instrument in pit, it overcomes the installation difficulty between the combination seal part, and the shortcoming that the part installation is not in place for seal part simple to operate, part installation target in place, its simple structure, simple to operate, it is sealed reliable.
The utility model provides a bleed valve for instrument in pit, its technical scheme is such, and it includes the skeleton, the axial front end of skeleton is provided with the protruding ring in location, the center of skeleton sets up the mud passage hole that runs through along the axial, axial front end, the axial rear end of skeleton are provided with first side protruding sealing ring platform and second side protruding sealing ring platform respectively, form device installation ring chamber between two side protruding sealing ring platforms, device installation ring chamber is used for installing corresponding device, its characterized in that: the device comprises a first side convex sealing ring platform, a second side convex sealing ring platform, a piston rod, a sealing O ring, a compression spring, a first air release valve body, a second air release valve body, a limit screw, a piston rod, a sealing O ring and a compression spring, wherein the radial position of the front end face of the first side convex sealing ring platform is inserted in the radial position of the rear end face of the second side convex sealing ring platform, the end face of the side convex sealing ring platform, which is far away from the device installation cavity, is recessed inwards to form a valve body installation cavity, the valve body installation cavity sequentially comprises a limit screw locking cavity, a sealing ring guiding transition cavity, a spring installation column cavity and an air flow channel from outside to inside in the installation direction, the sealing ring guiding transition cavity comprises an initial large-diameter positioning cavity, a conical platform cavity from outside to inside, the inner end of the conical platform cavity is communicated to the spring installation column cavity, the piston rod comprises an inner end spring positioning end and a middle O ring installation annular groove, The outer axial positioning end is sleeved on the middle O-shaped ring mounting ring groove, the radial outer surface of the sealing O-shaped ring protrudes out of the outer ring surface of the corresponding position of the piston rod, the sealing O-shaped ring is positioned at the position of the initial large-diameter positioning cavity at the initial position, the outer axial positioning end protrudes out after penetrating through a central hole of a limiting screw, the limiting screw is fixedly arranged in the limiting screw locking cavity in a threaded manner, the inner end of a compression spring is abutted against the inner wall of the spring mounting column cavity, the outer end of the compression spring is arranged in the ring groove of the inner end spring positioning end, the spring mounting column cavities of the two lateral convex sealing ring platforms are communicated with the device mounting ring cavity through corresponding air flow channels, the outer diameter of the sealing O-shaped ring is smaller than the aperture of the initial large-diameter positioning cavity, and the outer diameter of the sealing O-shaped ring is larger than the aperture of the spring mounting column cavity, the outer surface outer diameter of the middle O-shaped ring mounting ring groove is smaller than the aperture of the spring mounting column cavity.
It is further characterized in that:
the middle O-shaped ring mounting ring groove is formed in the outer periphery of the stop ring, the diameter of the stop ring is larger than the aperture of a central hole of the limit screw, and the limit of the limit screw on the piston rod is ensured;
the whole length of the sealing ring guide transition cavity and the spring mounting column cavity is greater than the length of the piston rod;
a closing-in transition part is arranged between the stop ring and the spring positioning end at the inner end, so that the stop ring is ensured to be conveniently inserted into the spring mounting column cavity;
the periphery of the first side convex sealing ring platform and the periphery of the second side convex sealing ring platform are provided with at least one O-shaped ring, and when the framework is inserted into the inner cavity of the instrument shell, the O-shaped rings are arranged by being attached to the ring wall of the corresponding mounting hole of the instrument shell;
the periphery cover of location bulge loop is equipped with two interval arrangement's O type sealing washer, and when the inner chamber of instrument case was located in the skeleton cartridge, the rampart of O type sealing washer laminating counterpoint hole was arranged.
After the utility model is adopted, the sealing O-ring is arranged in the ring groove of the inner spring positioning end of the piston rod, the sealing O-ring is arranged in the valve body installation cavity of the framework together with the compression spring and the stop screw, the compression spring is in a compression state, the piston rod is tightly pressed by the acting force of the compression spring, a gap is reserved between the sealing O-ring and the initial large-diameter positioning cavity, the framework is arranged in the instrument shell, the O-shaped sealing ring is compressed, air can not enter the first cavity of the outer end surface of the ring platform and the stop end surface of the instrument shell from the O-shaped sealing ring, the O-shaped ring is in a compression state, air in the first cavity can not flow into the device installation ring cavity from the O-shaped ring, and an air flow channel is arranged on the framework; when the framework is installed in the instrument shell, air in the first cavity flows into the device installation ring cavity through a gap between the piston rod and the framework, the air in the device installation ring cavity flows out through the air release valve body on the other side, the piston rod is in contact with the stop end face of the shell along with the increase of the installation depth of the framework and is gradually pressed to drive the sealing O ring to move, the first cavity is gradually reduced, the sealing O ring is gradually compressed, when the first cavity approaches 0, the sealing O ring is completely compressed, and at the moment, the framework is in place and is completed; in use, if the O-shaped sealing ring is damaged, the sealing O-shaped ring can play a certain sealing role to prevent slurry from entering the device mounting ring cavity; the sealing device overcomes the defects that the installation of combined sealing parts is difficult and the parts are not installed in place, so that the sealing parts are convenient to install and the parts are installed in place.
Drawings
FIG. 1 is a schematic view of the structure of the bleed valve body of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is an enlarged view of a portion of the structure of FIG. 1 and FIG. 4 at C;
FIG. 4 is a schematic view of the structure of the initial position for installing the deflation valve body of the present invention;
FIG. 5 is an enlarged view of a portion of the structure of FIG. 4 at B;
the names corresponding to the sequence numbers in the figure are as follows:
the device comprises an instrument shell 1, a framework 2, a positioning bulge ring 21, a slurry channel hole 22, a first side convex sealing ring platform 23, a second side convex sealing ring platform 24, a device mounting ring cavity 25, a first cavity 26, an O-shaped ring 3, a closing transition part 4, an O-shaped sealing ring 5, a limit screw 6, a piston rod 7, an inner end spring positioning end 71, a middle O-shaped ring mounting ring groove 72, an external axial positioning end 73, a ring groove 74, a stop ring 75, a sealing O-shaped ring 8, a compression spring 9, a limit screw locking cavity 10, a sealing ring guiding transition cavity 11, an initial large-diameter positioning cavity 111, a cone platform cavity 112, a spring mounting column cavity 12, an air flow channel 13, a first deflation valve body 100, a second deflation valve body 200 and a valve body mounting cavity 300.
Detailed Description
A deflation valve for downhole instruments is disclosed, as shown in figure 1 and figure 2, and comprises a framework 2, a positioning convex ring 21 is arranged at the axial front end of the framework 2, a slurry passage hole 22 which penetrates along the axial direction is arranged at the center of the framework 2, a first side convex sealing ring platform 23 and a second side convex sealing ring platform 24 are respectively arranged at the axial front end and the axial rear end of the framework 2, a device mounting ring cavity 25 is formed between the two side convex sealing ring platforms, the device mounting ring cavity 25 is used for mounting corresponding devices, a first deflation valve body 100 is inserted at a radial position of the front end surface of the first side convex sealing ring platform 23, a second deflation valve body 200 is inserted at a radial position of the rear end surface of the second side convex sealing ring platform 23, the first deflation valve body 100 and the second deflation valve body 200 respectively comprise a limit screw 6, a piston rod 7, a sealing O ring 8 and a compression spring 9, the end surface of the side convex sealing ring platform, which is far away from the device mounting cavity 25, is inwards concave to form a valve body mounting cavity 300, the valve body installation cavity 300 sequentially comprises a limit screw locking cavity 10, a seal ring guide transition cavity 11, a spring installation column cavity 12 and an air flow channel 13 from outside to inside from the installation direction, the seal ring guide transition cavity 11 comprises an initial large-diameter positioning cavity 111 and a tapered frustum cavity 112 which is tapered from outside to inside, the inner end of the tapered frustum cavity 112 is communicated with the spring installation column cavity 12, the piston rod 7 comprises an inner end spring positioning end 71, a middle O-shaped ring installation ring groove 72 and an outer axial positioning end 73, a sealing O-shaped ring 8 is sleeved in the middle O-shaped ring installation ring groove 72, the radial outer surface of the sealing O-shaped ring 8 protrudes out of the outer ring surface of the corresponding position of the piston rod 7, the sealing O-shaped ring 8 is positioned at the position of the initial large-diameter positioning cavity 111, the outer axial positioning end 73 penetrates through a central hole of the limit screw 6 and then protrudes out, the limit screw 6 is fixedly arranged in the limit screw locking cavity 10, the inner end of the compression spring 9 is arranged on the inner wall of the spring installation column cavity 12, the outer end of the compression spring 9 is arranged in the ring groove 74 of the inner end spring positioning end 71, the spring mounting column cavities 12 of the two side convex sealing ring platforms are communicated with the device mounting ring cavity 25 through the corresponding air flow channels 13, the outer diameter of the sealing O ring 8 is smaller than the aperture of the initial large-diameter positioning cavity 111, the outer diameter of the sealing O ring 8 is larger than the aperture of the spring mounting column cavity 12, and the outer surface outer diameter of the middle O ring mounting ring groove 72 is smaller than the aperture of the spring mounting column cavity 12.
The middle O-shaped ring mounting ring groove 72 is formed in the periphery of the outer ring of the stop ring 75, the diameter of the stop ring 75 is larger than the diameter of the central hole of the limiting screw 6, and the limiting of the limiting screw 6 on the piston rod 7 is ensured;
the integral length of the sealing ring guide transition cavity 11 and the spring mounting column cavity 12 is greater than that of the piston rod 7;
a closing-in transition part 4 is arranged between the stop ring 75 and the inner end spring positioning end 71 to ensure that the stop ring 75 is conveniently inserted into the spring mounting column cavity 12;
at least one O-shaped ring 3 is arranged on the periphery of the first side convex sealing ring platform 23 and the second side convex sealing ring platform 24, and when the framework 2 is inserted into the inner cavity of the instrument shell 1, the O-shaped ring 3 is arranged to be attached to the ring wall of the corresponding mounting hole of the instrument shell 1;
the periphery cover of location bulge loop 21 is equipped with two interval arrangement's O type sealing washer 5, and when skeleton 2 cartridge was in the inner chamber of instrument housing 1, the rampart of O type sealing washer 5 laminating counterpoint hole was arranged.
In a specific embodiment, the diameter of the air flow channel 13 is 2 mm.
The specific operation flow is as follows: the sealing O-ring 8 is arranged in a ring groove 74 of a spring positioning end 71 at the inner end of a piston rod 7, the sealing O-ring 8, a compression spring 9 and a limit screw 6 are arranged in a valve body installation cavity 300 of a framework 2 together, the compression spring 9 is in a compression state, the piston rod 7 is tightly propped against the limit screw 6 by the action force of the compression spring 9, a gap is reserved between the sealing O-ring 8 and an initial large-diameter positioning cavity 111, the O-shaped sealing ring 5 is compressed when the framework 2 is arranged in an instrument shell 1, air cannot enter a first cavity 26 of the outer end face of a ring platform and the stop end face of the instrument shell 1 from the O-shaped sealing ring 5, the O-shaped ring 3 is in a compression state, air cannot flow into a device installation ring cavity 25 from the O-shaped ring 3 in the first cavity 26, and an air flow channel 13 is arranged on the framework 2; when the framework 2 is installed in the instrument shell 1, air in the first cavity 26 flows into the device installation ring cavity 25 through a gap between the piston rod 7 and the framework 2, the air in the device installation ring cavity 25 flows out through the air release valve body 200 on the other side, along with the increase of the installation depth of the framework 2, the piston rod 7 contacts with the stop end face of the shell and is gradually compressed to drive the sealing O ring 8 to move, the first cavity 26 is gradually reduced, the sealing O ring 8 is gradually compressed, when the first cavity 26 approaches to 0, the sealing O ring 8 is completely compressed, and at the moment, the framework 2 is in place and is completed; in use, if the O-shaped sealing ring 5 is damaged, the sealing O-shaped ring 3 can play a certain sealing role to prevent slurry from entering the device mounting ring cavity 25; the sealing device overcomes the defects that the installation of combined sealing parts is difficult and the parts are not installed in place, so that the sealing parts are convenient to install and the parts are installed in place.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a bleed valve for instrument in pit, its includes the skeleton, the axial front end of skeleton is provided with the protruding ring in location, the center of skeleton sets up the mud passage hole that runs through along the axial, the axial front end of skeleton, axial rear end are provided with first side protruding sealing ring platform and second side protruding sealing ring platform respectively, form device installation ring chamber between two side protruding sealing ring platforms, device installation ring chamber is used for installing corresponding device, its characterized in that: the device comprises a first side convex sealing ring platform, a second side convex sealing ring platform, a piston rod, a sealing O ring, a compression spring, a first air release valve body, a second air release valve body, a limit screw, a piston rod, a sealing O ring and a compression spring, wherein the radial position of the front end face of the first side convex sealing ring platform is inserted in the radial position of the rear end face of the second side convex sealing ring platform, the end face of the side convex sealing ring platform, which is far away from the device installation cavity, is recessed inwards to form a valve body installation cavity, the valve body installation cavity sequentially comprises a limit screw locking cavity, a sealing ring guiding transition cavity, a spring installation column cavity and an air flow channel from outside to inside in the installation direction, the sealing ring guiding transition cavity comprises an initial large-diameter positioning cavity, a conical platform cavity from outside to inside, the inner end of the conical platform cavity is communicated to the spring installation column cavity, the piston rod comprises an inner end spring positioning end and a middle O ring installation annular groove, The outer axial positioning end is sleeved on the middle O-shaped ring mounting ring groove, the radial outer surface of the sealing O-shaped ring protrudes out of the outer ring surface of the corresponding position of the piston rod, the sealing O-shaped ring is positioned at the position of the initial large-diameter positioning cavity at the initial position, the outer axial positioning end protrudes out after penetrating through a central hole of a limiting screw, the limiting screw is fixedly arranged in the limiting screw locking cavity in a threaded manner, the inner end of a compression spring is abutted against the inner wall of the spring mounting column cavity, the outer end of the compression spring is arranged in the ring groove of the inner end spring positioning end, the spring mounting column cavities of the two lateral convex sealing ring platforms are communicated with the device mounting ring cavity through corresponding air flow channels, the outer diameter of the sealing O-shaped ring is smaller than the aperture of the initial large-diameter positioning cavity, and the outer diameter of the sealing O-shaped ring is larger than the aperture of the spring mounting column cavity, the outer surface outer diameter of the middle O-shaped ring mounting ring groove is smaller than the aperture of the spring mounting column cavity.
2. A gas purge valve for downhole tools as claimed in claim 1, wherein: the middle O-shaped ring mounting ring groove is formed in the periphery of the outer ring of the stop ring, and the diameter of the stop ring is larger than the aperture of the central hole of the limit screw.
3. A gas purge valve for downhole tools as claimed in claim 1, wherein: the whole length of the sealing ring guide transition cavity and the spring mounting column cavity is greater than the length of the piston rod.
4. A gas purge valve for downhole tools as claimed in claim 2, wherein: and a closing-in transition part is arranged between the stop ring and the spring positioning end at the inner end.
5. A gas purge valve for downhole tools as claimed in claim 1, wherein: the periphery of the first side convex sealing ring platform and the periphery of the second side convex sealing ring platform are provided with at least one O-shaped ring, and when the framework is inserted into the inner cavity of the instrument shell, the O-shaped rings are attached to the corresponding mounting hole ring walls of the instrument shell.
6. A gas purge valve for downhole tools as claimed in claim 1, wherein: the periphery cover of location bulge loop is equipped with two interval arrangement's O type sealing washer, and when the inner chamber of instrument case was located in the skeleton cartridge, the rampart of O type sealing washer laminating counterpoint hole was arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120293355.XU CN214428335U (en) | 2021-02-02 | 2021-02-02 | Air release valve for downhole instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120293355.XU CN214428335U (en) | 2021-02-02 | 2021-02-02 | Air release valve for downhole instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214428335U true CN214428335U (en) | 2021-10-19 |
Family
ID=78070000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120293355.XU Active CN214428335U (en) | 2021-02-02 | 2021-02-02 | Air release valve for downhole instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214428335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802541A (en) * | 2021-02-02 | 2021-05-14 | 国仪量子(无锡)技术有限公司 | Air release valve for downhole instrument |
-
2021
- 2021-02-02 CN CN202120293355.XU patent/CN214428335U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802541A (en) * | 2021-02-02 | 2021-05-14 | 国仪量子(无锡)技术有限公司 | Air release valve for downhole instrument |
| CN112802541B (en) * | 2021-02-02 | 2024-08-13 | 国仪量子(无锡)技术有限公司 | Air release valve for downhole instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214428335U (en) | Air release valve for downhole instrument | |
| CN102748041B (en) | Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining | |
| CN110849545A (en) | Gearbox casing leakage test shutoff mechanism | |
| CN112802541A (en) | Air release valve for downhole instrument | |
| CN110886874B (en) | High-pressure inflation valve | |
| CN109944965B (en) | Safety valve mechanism of onboard chemical oxygen generator | |
| CN216479253U (en) | Reversible solenoid valve | |
| KR102107542B1 (en) | Pressure gauge valve for the gas leak protecting of accumulator | |
| CN211373174U (en) | Pressure indicator of dryer | |
| CN210531695U (en) | Threaded cartridge type pneumatic pilot check valve | |
| CN220955567U (en) | Joint for underground sampler | |
| CN201202763Y (en) | Gas spring | |
| CN108518509B (en) | Gas self-closing valve | |
| CN110761785B (en) | Pressure maintaining cabin structure with glass window | |
| CN209745550U (en) | Two-way pressure test device of back pressure valve | |
| CN211474745U (en) | Bottom cover one-way inflation valve for single-tube shock absorber | |
| CN113339344A (en) | Relief valve reaches hydraulic pressure power assisted steering ware including it | |
| CN102953862B (en) | Sealing method and sealing device of circular hole of engine | |
| CN204457815U (en) | A kind of backplate bidirectional lock | |
| CN220600560U (en) | Dustproof spring type safety valve | |
| CN221280061U (en) | Quick-dismantling inflatable gun | |
| MX165392B (en) | STEM SEAL FOR LUBRICATED AND TAPPED MALE VALVES | |
| CN220769827U (en) | Sealing plug for pilot control oil way | |
| CN215928559U (en) | Valve and pressure driving device | |
| CN219045703U (en) | Portable self-sealing high-pressure gas cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |