CN110878682A - Plug device - Google Patents
Plug device Download PDFInfo
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- CN110878682A CN110878682A CN201811033520.7A CN201811033520A CN110878682A CN 110878682 A CN110878682 A CN 110878682A CN 201811033520 A CN201811033520 A CN 201811033520A CN 110878682 A CN110878682 A CN 110878682A
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- pressure relief
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Abstract
The invention provides a plug device. It includes: the plug seat, the plugging head and the blocking piece plug seat are provided with mounting round holes and pressure relief holes communicated with the mounting round holes; the mounting circular hole comprises a first threaded hole section; the plugging head comprises a plugging part and a tool connecting part; the plugging part is in threaded connection with the first threaded hole section so as to plug the mounting round hole and the pressure relief hole or unseal the pressure relief hole; the blocking piece is fixedly connected to the plug seat, and when the plugging portion unseals the pressure relief hole, the blocking piece abuts against the plugging head. According to the plug device, the mounting circular hole and the pressure relief hole are plugged through the threaded connection between the plugging head and the first threaded hole section, the plugging head is screwed out of the first threaded hole section, the pressure relief hole is communicated with the mounting circular hole for pressure relief, the pressure between the valve and the plugging head is released, the plugging head is blocked by the blocking piece, the plugging head is prevented from flying out to hurt an operator during pressure relief, and the personal safety of the operator is prevented from being threatened.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, in particular to a plug device.
Background
The christmas tree, as a wellhead device, is mainly used for suspending a tubing string running into a well, sealing the annular space of the tubing string, and controlling and regulating the production of the oil well. And a plug is arranged at the position of the valve of the Christmas tree, which is not connected with the pipeline, and is used for preventing oil gas from leaking.
The existing plug comprises a plugging part and a connecting part fixedly connected with the plugging part, and the plugging part is in threaded connection with a non-connecting pipeline of the Christmas tree for plugging. The connecting part is used for being connected with an operating tool so as to apply acting force to install or dismantle the plug. In the oil extraction process, a valve on a non-connecting pipeline of the Christmas tree is affected by oil gas corrosion or high pressure, and oil gas is easily leaked out of the valve, so that the pressure between the valve and the plug is increased. When the Christmas tree is connected with other equipment or pipelines for operation, in order to ensure the operation safety, the pressure between the valve and the plug needs to be released firstly. In the prior art, the plug is usually unscrewed to release the pressure between the valve and the plug, that is, the pressure is released by unscrewing the plug.
However, the plug is directly unscrewed, and the plug is easy to fly out under the action of pressure, so that operators are injured, and the personal safety of the operators is threatened.
Disclosure of Invention
The invention provides a plug device, which aims to solve the technical problem that an existing plug is easy to fly out to hurt operators when pressure is relieved.
The invention provides a plug device, which comprises: a plug seat, a plug head and a stop piece; the plug seat is provided with a mounting round hole and a pressure relief hole communicated with the mounting round hole; the mounting round hole comprises a first threaded hole section so as to plug the mounting round hole and the pressure relief hole or unseal the pressure relief hole; the blocking piece is fixedly connected to the plug head seat, and when the pressure relief hole is unsealed by the plugging part, the blocking piece abuts against the tool insertion hole to block the plug head.
The plug device as described above, wherein the mounting circular hole further includes a smooth hole section, the diameter of the smooth hole section is smaller than the diameter of the first threaded hole section, and the pressure relief hole is formed in a side wall of the smooth hole section; the installation round hole the shutoff portion include with unthreaded cylinder section complex and with the screw thread section of first screw thread hole section threaded connection.
The plug device as described above, wherein the tool connecting portion is a connecting column; or the tool connecting part is a groove formed on the end face of the blocking part.
The plug device as described above, wherein the plug device further comprises a sealing member for sealing the outlet of the pressure relief hole.
The plug device as described above, wherein the plurality of pressure relief holes are arranged at intervals along the circumferential direction of the unthreaded hole section.
The plug device as described above, wherein the mounting circular hole further includes a second threaded hole section, and a diameter of the second threaded hole section is larger than a diameter of the first threaded hole section; the abutting piece is in threaded connection with the second threaded hole section, and is provided with a tool insertion hole for exposing the tool connecting part.
The plug device as described above, wherein the stopper is a cover plate, and a tool insertion hole is formed in a region of the cover plate corresponding to the tool connecting portion.
The plug device as described above, wherein a flange is disposed at an end of the plug seat away from the stopper.
The plug device as described above, wherein the plug seat is a cylindrical structure, and an external thread matching with the internal thread of the pipeline is disposed at one end of the cylindrical structure away from the stopper.
The plug device as described above, wherein a hexagonal nut-shaped boss is disposed on the outer circumferential surface of the cylindrical structure.
According to the plug device, the mounting circular hole and the pressure relief hole are plugged through the threaded connection between the plugging head and the first threaded hole section, the plugging head is screwed out of the first threaded hole section, the pressure relief hole is communicated with the mounting circular hole for pressure relief, the pressure between the valve and the plugging head is released, the plugging head is blocked by the blocking piece, the plugging head is prevented from flying out to hurt an operator during pressure relief, and the personal safety of the operator is prevented from being threatened.
Drawings
The above and other objects, features and advantages of the embodiments of the present invention will become more readily understood by the following detailed description with reference to the accompanying drawings. Embodiments of the invention will now be described, by way of example and not limitation, in the accompanying drawings, in which:
FIG. 1 is an exploded view of the bulkhead apparatus of the invention;
FIG. 2 is a schematic structural view of the plugging state of the plugging device of the present invention;
FIG. 3 is a schematic structural view of the choke plug device according to the present invention in a pressure relief state;
FIG. 4 is a schematic structural view of a blocking state of the plug device of the present invention;
FIG. 5 is a cross-sectional view of a plug base of the plugging device of the present invention;
FIG. 6 is a schematic structural view of a plugging head of the plugging device of the present invention;
FIG. 7 is a schematic view of the stopper of the plug device of the present invention;
fig. 8 is a cross-sectional view of the stop of the plugging device of the present invention.
Description of reference numerals:
10: a plug seat; 11: mounting a round hole;
111: a first threaded bore section; 112: a smooth hole section;
113: a second threaded bore section; 12: a pressure relief vent;
13: a force application part; 14: a threaded connection;
20: plugging a plug; 21: a plugging section;
211: a light cylinder section; 212: a threaded segment;
22: a tool connecting portion; 30: a stop member;
31: a connecting section; 32: an operation section;
33: the tool is inserted into the hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
FIG. 1 is an exploded view of the bulkhead apparatus of the invention; FIG. 2 is a schematic structural view of the plugging state of the plugging device of the present invention; FIG. 3 is a schematic structural view of the choke plug device according to the present invention in a pressure relief state; FIG. 4 is a schematic structural view of a blocking state of the plug device of the present invention; FIG. 5 is a cross-sectional view of a plug base of the plugging device of the present invention; FIG. 6 is a schematic structural view of a plugging head of the plugging device of the present invention; FIG. 7 is a schematic view of the stopper of the plug device of the present invention; fig. 8 is a cross-sectional view of the stop of the plugging device of the present invention.
Referring to fig. 1 to 8, the present embodiment provides a plug device, which includes: a plug seat 10, a plug head 20 and a stopper 30; the plug seat 10 is provided with a mounting round hole 11 and a pressure relief hole 12 communicated with the mounting round hole 11, and the mounting round hole comprises a first threaded hole section 111; the plugging head 20 comprises a plugging part 21 and a tool connecting part 22, wherein the plugging part 21 is in threaded connection with the first threaded hole section 111 to plug the installation round hole 11 and the pressure relief hole 12 or unseal the pressure relief hole 12; the stopper 30 is fixedly connected to the plug seat 10, and when the plugging portion 21 unseals the pressure relief hole 12, the stopper 30 abuts against the plugging head 20. One end of the mounting round-hole plug seat 10 is used for being fixedly connected with a pipeline to be plugged. The plug seat 10 and the pipeline to be plugged can be connected through a flange, specifically, one end of the plug seat 10 can be provided with a flange plate, the flange plate is fixedly connected with the flange plate arranged on the pipeline to be plugged through a bolt, and a sealing gasket can be arranged between the flange plates in order to ensure the connection tightness. Or, the plug seat 10 is in threaded connection with the pipeline to be plugged, specifically, an internal thread is arranged at one end of the plug seat 10 and is in threaded connection with an external thread arranged on the pipeline to be plugged; or, one end of the plug seat 10 is a threaded connection portion 14, and an external thread is formed on the threaded connection portion 14 and is in threaded connection with an internal thread formed on the pipeline to be plugged. In order to facilitate the threaded connection between the plug seat 10 and the pipeline to be plugged, the plug seat 10 is further provided with a force application portion 13, and the force application portion 13 is used for being connected with an operation tool so as to connect the threaded connection portion 14 with the pipeline to be plugged in a threaded manner or detach the threaded connection portion 14 from the pipeline to be plugged. Preferably, the force application portion 13 is of a hexagonal nut structure. The embodiment of the present invention does not limit the thread of the threaded connection portion 14, and a person skilled in the art can design the threaded connection portion according to different pipelines to which the plug device is applied, for example, in an oil and gas equipment, the thread of the threaded connection portion 14 should meet the oil industry standard.
It should be noted that, in the embodiment of the present invention, the pipeline to be plugged may be a production tree or other oil and gas equipment pipeline in an oil and gas production process, and may also be a water pipe, a heating pipeline, or the like.
The pressure relief hole 12 is formed in the side wall of the plug seat 10 and communicated with the mounting round hole 11. The outlet of the pressure relief hole 12 may be disposed in the force application portion 13, and certainly, for convenience of processing, a section of light cylinder portion is disposed between the force application portion 13 and the threaded connection portion 14 of the plug seat 10, and the outlet of the pressure relief hole 12 is disposed in the light cylinder portion. The size of the cross section of the pressure relief hole 12 can be set according to a pipeline in practical application, for example, on pipelines of some high-pressure devices, the pressure in the pipeline may be relatively large, and the cross section of the pressure relief hole 12 can be designed to be relatively large, so that the pressure relief speed is accelerated. The cross section of the pressure relief hole 12 may be circular, oval, polygonal, etc., and is not limited thereto. Preferably, the pressure relief hole 12 is circular in cross-section. The pressure relief vent 12 may be a smooth circular hole. Preferably, pressure release hole 12 is provided with the internal thread at the exit end for with other pressure release pipeline intercommunications, can avoid the fluid pressure release in the pipeline to cause the pollution in the atmospheric environment, also can avoid impurity such as granule to get into pressure release hole 12 and cause the jam, influence the pressure release.
The plug base 10 is provided with a mounting round hole 11, a force application part 13 penetrating through the plug base 10 and a threaded connection part 14. The mounting circular hole 11 includes a first threaded hole section 111 for being threadedly coupled with the blocking portion 21 of the blocking head 20. Wherein, the inlet of the pressure relief hole 12 is arranged on the first threaded hole section 111, and the mounting round hole 11 and the pressure relief hole 12 are sealed by the threaded connection of the sealing part 21 on the first threaded hole section 111; and screwing the plugging head 20 out of the first threaded hole section 111 for a certain distance, so that the mounting round hole 11 is communicated with the pressure relief hole 12 for pressure relief. Or, the pressure relief hole 12 is arranged on one side of the first threaded hole section 111 far away from the pipeline to be plugged, and the plugging head 20 is completely screwed out from the first threaded hole section 111, so that the installation round hole 11 is communicated with the pressure relief hole 12 to relieve pressure.
The tool connection portion 22 of the plugging head 20 is a connection post or a connection groove, and is used for being connected to an operation tool such as a wrench, so as to apply a force to screw the plugging portion 21 to the first threaded hole section 111, or to detach the plugging portion 21 from the first threaded hole section 111.
In order to ensure that the plugging head does not fly out of the mounting circular hole 11 when the plugging portion 21 of the plugging head 20 is screwed out of the first threaded hole section 111 for pressure relief, a stop member 30 is disposed at an end of the plug seat 10 away from the pressure relief hole 12 to stop the plugging head 20. The stopper 30 is provided with a tool insertion hole 33, an operating tool is inserted through the tool insertion hole 33 and connected to the tool connecting portion 22 of the blocking portion 21, and the blocking portion 21 is operated to be screwed or unscrewed from the first threaded hole section. Wherein, the size of the tool insertion hole 33 is smaller than that of the plugging portion 21, so as to realize the resistance to the plugging portion 21. The stopper 30 may be an end cap structure, and is covered on the other end of the plug seat 10; alternatively, the stopper 30 may be a plug structure and disposed at the other end of the mounting hole 11. The stopper 30 may also be a stopper rod structure, specifically, a mounting hole is formed at the other end of the plugging head 10 along a direction perpendicular to the axial direction of the mounting circular hole 11, and the mounting hole penetrates through the edge position of the mounting circular hole 11; the mounting holes are two parallel to each other, and the distance between the two mounting holes is smaller than the size of the blocking portion 21 of the blocking head 20. The blocking rods penetrate through the mounting holes, and the two blocking rods can block the blocking heads 20. Of course, the number of the blocking rods may be three, four, etc., and the middle area surrounded by the plurality of blocking rods is smaller than the size of the blocking portion 21, so that the blocking head 20 can be blocked.
The end cap device that this embodiment provided, one end through the end cap seat with treat that the shutoff pipeline realizes fixed connection, through shutoff head and first screw hole section threaded connection shutoff installation round hole and pressure release hole, twist out the shutoff head from first screw hole section, make pressure release hole and installation round hole intercommunication carry out the pressure release, pressure between release valve and the shutoff head utilizes to keep out the piece and keeps out the shutoff head, departure injury operating personnel when preventing the shutoff head pressure release, avoid making the threat to operating personnel's personal safety.
Further, the mounting circular hole 11 further comprises a smooth hole section 112, and the diameter of the smooth hole section 112 is smaller than that of the first threaded hole section 111; the pressure relief hole 12 is formed in the side wall of the unthreaded hole section 112; the blocking portion 21 comprises a smooth cylindrical section 211 cooperating with the smooth bore section 112 and a threaded section 212 threadedly connected with the first threaded bore section 111.
The mounting circular hole 11 is located at one end close to the pipeline to be plugged, and the first threaded hole section 111 is located at one side of the smooth hole section 112 far away from the pipeline to be plugged. The diameter of the unthreaded hole section 112 is smaller than that of the first threaded hole section 111, and correspondingly, the diameter of the unthreaded cylinder section 211 of the plugging portion 21 is smaller than that of the threaded section 212, so that the installation is convenient, and reliable plugging can be realized.
The inlet of the pressure relief hole 12 is arranged on the unthreaded hole section 112 of the mounting round hole 11, and preferably, the pressure relief hole 12 is arranged at one end of the unthreaded hole section 112 close to the first threaded hole section 111. The blocking portion 21 comprises a smooth cylindrical section 211 and a threaded section 212, and the smooth cylindrical section 211 is matched with the smooth hole section 112 to block the pressure relief hole 12. The threaded section 212 is threadedly coupled to the first threaded bore section 111. The threads of the threaded section 212 and the first threaded bore section 111 may be triangular threads, rectangular threads, trapezoidal threads, etc., which are not limited in the embodiments of the present invention.
Referring to fig. 2, 5 and 6, the threaded section 212 of the plugging portion 21 is in threaded connection with the first threaded hole section 111, the smooth cylindrical section 211 of the plugging portion 21 is matched with the smooth hole section 112 to plug the installation round hole 11 and the pressure relief hole 12, and meanwhile, the plugging head seat 10 is fixedly connected with a pipeline to be plugged to plug the pipeline;
referring to fig. 3, 5 and 6, when the plug device needs to be removed and connected with other equipment or pipelines, the tool connecting portion 22 of the plugging head 20 is connected by operating a tool, the threaded portion 212 is screwed upwards, the whole plugging head 20 moves upwards along the axial direction of the through hole 11, when the smooth cylinder section 211 moves to the upper end of the pressure relief hole 12, the pressure relief hole 12 is communicated with the smooth hole section 112, and pressure fluid between the valve and the plug device flows out through the pressure relief hole for pressure relief. Preferably, when the pressure relief hole 12 communicates with the unthreaded hole section 112 for pressure relief, the threaded section 212 and the first threaded hole section 111 are still partially threaded, so as to resist a portion of the pressure of the fluid between the valve and the plug device on the plugging head 20.
Referring to fig. 4 to 6, when the threaded connection between the threaded section 212 and the first threaded hole section 111 is insufficient to resist the pressure of the fluid between the valve and the plug device on the plug 20, the fluid pressure between the valve and the plug device impacts the plug 20 to continue moving upward along the axial direction of the installation circular hole 11, and the stopper 30 arranged at one end of the plug seat 10 far away from the pressure relief hole 12 further resists the plug 20, so as to prevent the plug from flying out to hurt the operator and protect the personal safety of the operator.
It should be noted that, in the present invention, the terms "upper" and "top" refer to the end far away from the plugging pipeline; the terms "lower" and "bottom" refer to the end near the plugged conduit.
In some embodiments, the tool coupling portion 22 of the plug 20 is a connecting post projecting above the top surface of the threaded segment 212. The connecting column can be a multi-side column such as a triangular column, a square column or a hexagonal column, or other columns with irregular shapes, and is convenient to be connected with operating tools such as a wrench. Optionally, the connecting column is of a hexagonal column structure and can be connected with a universal hexagonal wrench. The connecting column can be positioned in the mounting round hole 11, and an operating tool extends into the mounting round hole 11 for operation; the connecting column can also extend out of the mounting round hole 11, and is connected with an operating tool more simply and conveniently and is easy to operate.
In other embodiments, the tool connecting portion 22 of the plugging head 20 is a groove formed on the end surface of the plugging portion 21. Specifically, the tool coupling portion 22 is a coupling recess recessed downwardly from a top surface of the threaded section 212. The connecting groove can be a polygonal groove such as a triangular groove, a quadrilateral groove, a hexagonal groove and the like, or a groove in other irregular shapes and the like. Optionally, the connecting groove is a hexagonal groove and can be connected with a universal socket head wrench.
Optionally, the plug device further comprises a closure capable of closing the outlet end of the pressure relief hole 12. Specifically, the outlet end of the pressure relief hole 12 is provided with threads, and the plugging piece is in threaded connection with the outlet end of the pressure relief hole 12; or the blocking piece is in interference fit or clamped connection with the outlet end of the pressure relief hole 12. The plugging piece can be a plug body structure and is accommodated in the pressure relief hole 12; alternatively, the blocking member may be an end cap structure covering the outlet end of the pressure relief hole 12. At some job sites, the environment is comparatively abominable, for example oil gas exploitation scene etc. it is more to raise sand, dust etc. when not needing the pressure release, and the shutoff piece is connected with the exit end of pressure release hole 12 and is carried out the shutoff, prevents impurity such as sand and dust from blockking up pressure release hole 12 in getting into pressure release hole 12, influences the pressure release.
Alternatively, the pressure relief hole 12 is one, an opening end of which is disposed in the unthreaded hole section 112, and an outlet end of which is disposed between the force application portion 13 and the threaded connection portion 14 of the plug seat 10, and is provided with a section of unthreaded cylindrical portion. The central axis of the relief port 12 may be inclined with respect to the central axis of the mounting circular hole 11. Preferably, the central axis of the pressure relief port 12 is perpendicular to the central axis of the mounting circular hole 11.
Optionally, the pressure relief hole 12 is plural and is arranged at intervals along the circumference of the unthreaded hole section 112. For example, the pressure relief holes 12 may be two or three, etc., and are uniformly spaced along the circumference of the light hole section 112. Still alternatively, the pressure relief holes 12 are a plurality of and are arranged along the axial interval of the unthreaded hole section 112, and in the process of screwing out the thread section 212 upwards gradually, the pressure relief holes 12 are communicated with the mounting circular hole 11 one by one to relieve pressure, so that the risk of flying out of the plugging head is reduced. Or, a plurality of pressure relief holes 12 are arranged at intervals along the spiral direction of the unthreaded hole end 112, and when the threaded section 212 of the blocking portion 21 is screwed out of the first threaded hole section 111 upwards gradually, the pressure relief holes 12 are communicated with the mounting circular hole 11 one by one to relieve pressure, so that the risk of flying out of the blocking head is reduced.
In addition to the above embodiments, the stopper 30 is a cover plate, and a tool insertion hole is formed in a region of the cover plate corresponding to the tool connecting portion 22. The cover plate is covered at the other end of the plug seat 10, and the cover plate can be an end cover structure provided with a flange structure and is connected with a flange arranged at the other end of the plug seat 10 through a bolt. Or, the cover plate may be an end cap structure provided with threads, and is sleeved on the other end of the plug seat 10. The stopper 30 is provided with a tool insertion hole, which may be a multi-deformation such as a triangle or a square, or a circular, an oval, an irregular shape, or the like. Preferably, the tool insertion hole is a circular hole, the diameter of the tool insertion hole is smaller than that of the threaded section 212 of the blocking portion 21, the diameter of the tool insertion hole is larger than that of the tool connecting portion 22, an operating tool can be connected with the tool connecting portion 22 through the tool insertion hole for operation, and the bottom surface of the stopper 30 is in contact with the top surface of the threaded section 212 for stopping.
The stopper 30 may also be in other forms, for example, the stopper 30 is received in the mounting hole 11. Specifically, the mounting circular hole 11 further includes a second threaded hole section 113, and the diameter of the second threaded hole section 113 is larger than that of the first threaded hole section 111; the stopper 30 is screw-coupled with the second screw hole section 113, and the stopper 30 is provided with a tool insertion hole 33 exposing the tool coupling portion.
The upper end of the mounting round hole 11 is provided with internal threads which are second threaded hole sections 113, and the second threaded hole sections 113 are positioned at one ends of the first threaded hole sections 111 far away from the pipeline to be plugged; a section of the unthreaded hole is arranged between the second threaded hole section 113 and the first threaded hole section 111, the diameter of the unthreaded hole is consistent with that of the first threaded hole section 111, and the diameter of the second threaded hole section 113 is larger than that of the unthreaded hole section, so that the plugging head 20 is convenient to install. Referring to fig. 7 and 8, the stopper 30 includes a connection section 31 and an operation section 32, the connection section 31 is provided with an external thread and is threadedly connected to the second threaded hole section 113, and the operation section 32 is used for being connected to an operation tool to perform an operation. Preferably, the operation section 32 is a hexagonal nut structure, which is convenient for connecting with an universal wrench. The stopper 30 is provided with a tool insertion hole 33 penetrating the connecting section 31 and the operating section 32, and the tool insertion hole 33 may be a triangular, square or other multi-deformation shape, or a circular, oval or irregular shape. Preferably, the tool insertion hole 33 is a circular hole, and the diameter of the tool insertion hole 33 is larger than the size of the tool connection portion 22 of the plugging head 20 and smaller than the diameter of the threaded section 212, so that the bottom surface of the connection section 31 abuts against the top surface of the threaded section 212 to prevent the plugging head from flying out to hurt the operator.
Further, the plug seat 10 is a cylindrical structure, and an external thread matched with the internal thread of the pipeline is arranged at one end of the cylindrical structure far away from the abutting piece 30. The outer circumference of the cylindrical structure is provided with a hexagonal nut-shaped boss. That is, the force application portion 13 of the plug seat 10 is a hexagonal nut boss, which facilitates connection with an operation tool such as a wrench, and applies an acting force to mount or dismount the plug seat 10. The threaded connection part of the plug seat 10 is an external thread and is matched with the internal thread of the pipeline, so that the plug seat is fixedly connected with the pipeline.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A plug device, comprising: a plug seat, a plug head and a stop piece;
the plug seat is provided with a mounting round hole and a pressure relief hole communicated with the mounting round hole; the mounting circular hole comprises a first threaded hole section;
the plugging head comprises a plugging part and a tool connecting part; the blocking part is in threaded connection with the first threaded hole section so as to block the mounting round hole and the pressure relief hole or unblock the pressure relief hole;
the blocking piece is fixedly connected to the plug seat, and when the plugging portion unseals the pressure relief hole, the blocking piece abuts against the plug.
2. The plug device according to claim 1, wherein said mounting hole further comprises a smooth hole section, the diameter of said smooth hole section is smaller than the diameter of said first threaded hole section, and said pressure relief hole is provided in a side wall of said smooth hole section;
the plugging part comprises a smooth cylindrical section matched with the smooth hole section and a threaded section in threaded connection with the first threaded hole section.
3. The plug device of claim 2, wherein said tool connection portion is a connecting post; or the tool connecting part is a groove formed on the end face of the blocking part.
4. The plug device of claim 2, further comprising a closure member covering the outlet of the pressure relief vent.
5. The plug device according to claim 4, wherein the pressure relief hole is provided in plurality and spaced apart along the circumference of the unthreaded hole section.
6. The plug device according to any one of claims 1 to 5, wherein said stopper is a cover plate, and a tool insertion hole is formed in a region of said cover plate corresponding to said tool connecting portion.
7. The plug device according to any one of claims 1-5, wherein said mounting bore further comprises a second threaded bore section, said second threaded bore section having a diameter greater than a diameter of said first threaded bore section;
the abutting piece is in threaded connection with the second threaded hole section, and is provided with a tool insertion hole for exposing the tool connecting part.
8. The plug device according to any one of claims 1 to 5, wherein an end of said plug base remote from said stopper is provided with a flange.
9. The plug device according to any one of claims 1 to 5, wherein the plug seat is a cylindrical structure, and an end of the cylindrical structure, which is away from the stopper, is provided with an external thread matching with the internal thread of the pipeline.
10. The plug device according to claim 9, wherein the outer circumferential surface of said cylindrical structure is provided with hexagonal nut-like projections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033520.7A CN110878682A (en) | 2018-09-05 | 2018-09-05 | Plug device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033520.7A CN110878682A (en) | 2018-09-05 | 2018-09-05 | Plug device |
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| Publication Number | Publication Date |
|---|---|
| CN110878682A true CN110878682A (en) | 2020-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811033520.7A Pending CN110878682A (en) | 2018-09-05 | 2018-09-05 | Plug device |
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| CN (1) | CN110878682A (en) |
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