CN113155366A - Pipeline close-test expansion plug - Google Patents
Pipeline close-test expansion plug Download PDFInfo
- Publication number
- CN113155366A CN113155366A CN202110519698.8A CN202110519698A CN113155366A CN 113155366 A CN113155366 A CN 113155366A CN 202110519698 A CN202110519698 A CN 202110519698A CN 113155366 A CN113155366 A CN 113155366A
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- China
- Prior art keywords
- clamping plate
- rubber plug
- bolt
- pipeline
- plug body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/022—Test plugs for closing off the end of a pipe
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to the technical field of ship pipeline sealing tests, and discloses a pipeline sealing test expansion plug which comprises an air vent bolt, an upper clamping plate, a rubber plug body, a lower clamping plate and a locking nut, wherein the screw head of the air vent bolt is connected with the lower clamping plate, the rubber plug body and the upper clamping plate are respectively and correspondingly provided with an opening, a rod body of the air vent bolt penetrates through the rubber plug body and the upper clamping plate from bottom to top in a sealing manner, and the locking nut is in threaded connection with the air vent bolt. The pipeline density test result of the pipeline density test expansion plug is accurate, the test efficiency is improved, the operation of fire is avoided, the manual loss is reduced, and the effects of cost reduction and efficiency improvement are achieved.
Description
Technical Field
The invention relates to the technical field of ship pipeline sealing tests, in particular to a pipeline sealing test expansion plug suitable for ship pipeline sealing test.
Background
At present, the pipeline need seal the processing when close examination, and the past sealing treatment who commonly uses relates to a large amount of fire operation, often all has damages to ship planking and paint etc. need restore ship planking, touch-up paint after close examination is finished, can not directly be under construction to the cabin of can not firing in the short time, and this makes the engineering time, the construction volume and the construction degree of difficulty all greatly increased, and the waste time is hard, and the debugging cycle is long, seriously influences product ship debugging node, increases company's labour cost.
Therefore, a pipeline close-test expansion plug needs to be designed, so that the operation of fire operation can be effectively reduced, the damage to an outboard plate, paint and the like is reduced, the use is convenient, the manual loss is reduced, the close-test performance is good, the maintenance and the storage are convenient for repeated use, the operation is simple and easy, the available range is wide, the waiting can be avoided for the cabin and the like which cannot be fired in a short time, the construction can be directly carried out by adopting a product, and the influence is small.
Disclosure of Invention
The purpose of the invention is: the pipeline close-test expansion plug is convenient to use, reduces manual loss and has good close-test performance.
In order to solve the technical problem, the invention provides a pipeline sealing test expansion plug.
A pipeline sealing test expansion plug comprises an air vent bolt, an upper clamping plate, a rubber plug body, a lower clamping plate and a locking nut, wherein the screw head of the air vent bolt is connected with the lower clamping plate, the rubber plug body and the upper clamping plate are respectively and correspondingly provided with an opening, a rod body of the air vent bolt penetrates through the rubber plug body and the upper clamping plate from bottom to top in a sealing mode, and the locking nut is in threaded connection with the air vent bolt.
In a preferred embodiment of the present invention, the screw head of the vent bolt is welded to the lower plate.
As a preferable aspect of the present invention, the lock nut has a double nut structure.
As a preferable scheme of the invention, an output port is arranged on the shaft body of the vent bolt corresponding to the peripheral wall in the rubber plug body, and an input port is arranged at the tail end of the shaft body of the vent bolt.
In a preferred embodiment of the present invention, the size of the rubber plug is DN45 to DN 150.
In a preferred embodiment of the present invention, the material of the vent screw is stainless steel.
Compared with the prior art, the pipeline close test expansion plug provided by the embodiment of the invention has the beneficial effects that: the pipeline density test result is accurate, the test efficiency is improved, the operation of firing is avoided, the manual loss is reduced, and the effects of cost reduction and efficiency improvement are achieved.
Drawings
FIG. 1 is a front view of a mounting structure of an embodiment of the present invention;
FIG. 2 is an exploded view of the mounting structure of the embodiment of the present invention;
in the figure, 1, a vent bolt; 11. an input port; 12. an output port; 2. an upper splint; 3. a rubber plug body; 4. a lower splint; 5. and locking the nut.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be further understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the machine or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, the pipeline sealing test expansion plug of the embodiment of the invention comprises an air vent bolt 1, an upper clamping plate 2, a rubber plug body 3, a lower clamping plate 4 and a locking nut 5, wherein a screw head of the air vent bolt 1 is connected with the lower clamping plate 4, the rubber plug body 3 and the upper clamping plate 2 are respectively and correspondingly provided with an opening, a rod body of the air vent bolt 1 hermetically penetrates through the rubber plug body 3 and the upper clamping plate 2 from bottom to top, the locking nut 5 is in threaded connection with the air vent bolt 1 and is pressed against the upper clamping plate 2 downwards, the upper clamping plate 2 and the lower clamping plate 4 are respectively and hermetically abutted against the upper end and the lower end of the rubber plug body 3, the locking nut 5 is screwed downwards along the air vent bolt 1 by rotation, so that the lower clamping plate 4 and the upper clamping plate 2 are respectively driven to clamp the rubber plug body 3, and the whole expansion plug is put into a pipe orifice of a sealing test pipeline in use, the circumferential wall of the rubber plug body 3 is opposite to the inner wall surface of a sealing test pipeline, the ventilation bolt 1 is utilized to input and output gas-liquid media, the ventilation bolt 1 is connected with the ventilation bolt 1 through a conveying pipe, other media such as water, compressed air and nitrogen are input into the rubber plug body 3, so that the rubber plug body 3 expands to block the sealing test pipeline to form the sealing treatment effect, meanwhile, the locking nut 5 is rotated to further adjust the size of the rubber plug body 3 which is clamped and expanded, secondary adjustment of inflation and nut screwing is realized, more accurate and convenient thickness adjustment can be carried out through two adjusting operation modes respectively, the expansion plug is expanded mainly through filling media in actual use, manpower is not needed to be used for frequently screwing the locking nut 5, and meanwhile, the rubber plug body 3 is uniformly supported by inflation or other media from the inside, and compression deformation caused by long-term use of a clamping plate for the rubber plug body 3 is avoided, the stressed structure of the clamping plate is low, particularly the force application area of the vent bolt 1 and the locking nut 5 on the upper clamping plate 2 and the lower clamping plate 4 is small, so that the pressure intensity generated by the larger pressure is large, and when the expansion plug needs to be deeply placed into a certain narrow-space tight test pipeline, the locking nut 5 is difficult to be screwed by hands with a tool, the filling pipe is filled with a medium, the operation can be very conveniently carried out, the speed is high, the tightness test performance of the expansion plug is good through inspection, the influence on the tight test result is small, the complex fire operation is avoided, the outer plate of the ship and paint are protected, the manual loss is greatly reduced, and the condition that the tight test of the short-time non-movable fire cabin cannot be carried out is avoided.
Referring to fig. 1 and 2, the head of the breather bolt 1 is welded to the lower plate 4, so that the breather bolt 1 and the lower plate 4 have good connection strength, and the breather bolt 1 can be connected by a threaded connection or other means.
Referring to fig. 1 and 2, for example, the locking nut 5 is of a double-nut structure, and the locking nut 5 increases the friction force between the nut teeth and the bolt teeth through the axial force generated between the nuts after the two nuts are tightened, so as to prevent the nut from automatically loosening, realize double-nut locking and looseness prevention, and effectively prevent the rubber plug body 3 from expanding and shrinking due to the loosening of the nut after the filling medium expands, so that a gap is leaked, and the sealing test fails.
Referring to fig. 2, exemplarily, an output port 12 is provided on the circumference wall of the vent bolt 1 corresponding to the inside of the rubber plug body 3, an input port 11 communicated with the output port 12 through a hollow pipeline is provided at the end of the shank of the vent bolt 1, a delivery pipe is just connected with the thread at the end of the shank of the vent bolt 1 through a connector, and a medium is input from the input port 11, passes through the hollow pipeline inside the vent bolt 1, and is inflated or other media are input into the rubber plug body 3 from the output port 12, which is also easier to process.
Referring to fig. 1 and 2, for example, the rubber plug body 2 has a size of DN45 to DN150, an applicable pressure of 0.3MPa or less, applicable media of water, compressed air, nitrogen and the like, an outer diameter of the rubber plug body can be customized according to the actual marine pipeline size, a taper or national standard can be customized according to the actual marine pipeline size, an allowable range is up and down 3mm, a special pressure reducing meter is arranged to ensure that the rubber plug body can be used without overpressure, safety is improved, the pipeline sealing plug is suitable for pipeline sealing plugs with large and small diameters such as pipe orifice blocking, seawater pipes, fresh water pipes, deck water leaking pipes and degaussing cable pipes for various ships, and the pipeline sealing plugs can be used for underwater maintenance and sealing in sealing tests such as underwater maintenance and water tank oil tanks, dynamic fire operation can be effectively reduced, damage to ship outer plates and paint and the like is reduced, use is convenient, manual loss is reduced, sealing test performance is good, and repeated use, maintenance and storage is convenient, and simple and easy to use, The application range is wide, waiting can be avoided for an immovable fire cabin in a short time, construction can be carried out by directly adopting products, and the influence is small.
Referring to fig. 1 and 2, the material of the aeration screw 1 is stainless steel, for example, to avoid chemical reaction of the medium therein.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A pipeline close-test expansion plug is characterized in that: the ventilation bolt comprises a ventilation bolt, an upper clamping plate, a rubber plug body, a lower clamping plate and a locking nut, wherein the screw head of the ventilation bolt is connected with the lower clamping plate, the rubber plug body and the upper clamping plate are respectively and correspondingly provided with an opening, a rod body of the ventilation bolt penetrates through the rubber plug body and the upper clamping plate from bottom to top in a sealing mode, and the locking nut is in threaded connection with the ventilation bolt.
2. A pipeline close-fitting expansion plug as claimed in claim 1, wherein: and the screw head of the vent bolt is connected with the lower clamping plate in a welding way.
3. A pipeline close-fitting expansion plug as claimed in claim 1, wherein: the locking nut is of a double-nut structure.
4. A pipeline close-fitting expansion plug as claimed in claim 1, wherein: the rod body of the vent bolt is correspondingly arranged on the peripheral wall in the rubber plug body and is provided with an output port, and the tail end of the rod body of the vent bolt is provided with an input port.
5. A pipeline close-fitting expansion plug as claimed in claim 1, wherein: the size of the rubber plug body is DN 45-DN 150.
6. A pipeline close-fitting expansion plug as claimed in claim 1, wherein: the material of the ventilating screw rod is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110519698.8A CN113155366A (en) | 2021-05-12 | 2021-05-12 | Pipeline close-test expansion plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110519698.8A CN113155366A (en) | 2021-05-12 | 2021-05-12 | Pipeline close-test expansion plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113155366A true CN113155366A (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110519698.8A Pending CN113155366A (en) | 2021-05-12 | 2021-05-12 | Pipeline close-test expansion plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113155366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899508A (en) * | 2021-09-29 | 2022-01-07 | 中船黄埔文冲船舶有限公司 | Pressure test tool for low-pressure pipeline |
-
2021
- 2021-05-12 CN CN202110519698.8A patent/CN113155366A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899508A (en) * | 2021-09-29 | 2022-01-07 | 中船黄埔文冲船舶有限公司 | Pressure test tool for low-pressure pipeline |
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