CN109458564B - Nitrogen gas pipeline leakage detecting and temporary plugging device - Google Patents
Nitrogen gas pipeline leakage detecting and temporary plugging device Download PDFInfo
- Publication number
- CN109458564B CN109458564B CN201811298673.4A CN201811298673A CN109458564B CN 109458564 B CN109458564 B CN 109458564B CN 201811298673 A CN201811298673 A CN 201811298673A CN 109458564 B CN109458564 B CN 109458564B
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- semicircular
- pipe
- gas leakage
- conveying pipeline
- spout
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Abstract
The invention relates to the technical field of nitrogen conveying, in particular to a gas leakage detection and temporary leakage stopping device for a nitrogen conveying pipeline, which comprises two semicircular pipes, wherein both ends of each semicircular pipe are respectively provided with a semicircular ring, the lenses are embedded in the semicircular pipes respectively, the outer walls of the semicircular pipes are provided with first sliding grooves respectively, the direction of the first sliding grooves is consistent with the direction of the long axis of the semicircular pipes, one end of the magnet block is inserted in the first chute, the inner wall of the semicircular tube is respectively provided with a second chute which is parallel to the first chute, and the one end that the second spout interpolation was equipped with the iron plate, iron plate and magnet piece accordant connection, this device operation process is convenient simple, can effectual improvement leak detection efficiency, and detects the back that finishes, when not demolising the device, and the device can be used as interim plugging device.
Description
Technical Field
The invention relates to the technical field of nitrogen conveying, in particular to a gas leakage detection and temporary plugging device for a nitrogen conveying pipeline.
Background
Nitrogen gas of the chemical formula N2Generally, it is a colorless and odorless gas, and nitrogen gas is generally less dense than air, and it is a main component of air and accounts for 78.08% (volume fraction) of the total amount of atmosphere, and it is generally used as a shielding gas in industrial production. In the nitrogen gas use, generally carry through the pipeline, the long-time use of pipeline can lead to the phenomenon that the pipeline appears leaking gas, in order to find out the gas leakage point, traditional method is to scribble the soapy water on the pipeline and observe after the manual work is repeated, and this kind of mode of scribbling is inefficient, and then leads to leaking gas to detect the speed slowly.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a device for detecting gas leakage and temporarily stopping leakage of a nitrogen conveying pipeline.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gas leakage detection and temporary plugging device for a nitrogen conveying pipeline comprises two semicircular pipes, wherein two ends of each semicircular pipe are respectively provided with a semicircular ring, lenses are embedded and mounted on the semicircular pipes respectively, the outer walls of the semicircular pipes are respectively provided with a first sliding groove, the direction of the first sliding groove is consistent with the direction of the long axis of each semicircular pipe, one end of a magnet block is inserted in the first sliding groove, the inner wall of each semicircular pipe is respectively provided with a second sliding groove, the second sliding groove is parallel to the first sliding groove, one end of an iron block is inserted in the second sliding groove, the iron block is connected with the magnet block in a matching manner, one end, far away from the magnet block, of the iron block is connected with one end of a fixed rod, the other end of the fixed rod is provided with a mounting groove, a telescopic rod is inserted in the mounting groove, and a spring is placed between the telescopic rod and the, and the telescopic link is kept away from the one end of mounting groove and is glued and connect the plastic block, the plastic block is arc, and the inner wall rubberizing of plastic block has connect the sponge piece.
Preferably, the outer wall of the semicircular pipe is respectively provided with two fixing blocks, and the fixing blocks are respectively provided with uniformly distributed screw holes.
Preferably, the semicircular pipe is provided with a pressure gauge and an exhaust port.
Preferably, a stop valve is installed on the exhaust port.
Preferably, the outer diameter of the semicircular pipe is equal to the outer diameter of the semicircular ring, and the inner diameter of the semicircular pipe is smaller than the inner diameter of the semicircular ring.
Preferably, the inner walls of the semicircular pipe and the semicircular ring are respectively provided with a rubber layer.
Preferably, the area of the lens is not less than half of the area of the semicircular tube.
Preferably, a safety valve is installed on the semicircular pipe.
The invention has the beneficial effects that:
1. the gas leakage area is determined, the two semicircular pipes are clamped on the outer side of the nitrogen pipeline to be detected, the fixing block is connected well through screws and nuts, the rubber layers between the semicircular pipes are clamped, the rubber layers on the semicircular rings are clamped with the nitrogen pipeline, the device and the nitrogen pipeline form a sealing area, the reading of the pressure gauge is observed, if the reading of the pressure gauge rises, the gas leakage area is formed, if the reading of the pressure gauge is unchanged, the gas leakage area is formed, and other areas are newly found.
2. Confirm the gas leakage point, the regional back that finishes of air leakage, the pulling magnet piece, the magnet piece drives the iron plate and removes, can drive dead lever and telescopic link removal during the iron plate removes, finally drive the plastic block and remove, the soapy water of impregnating in advance can paint on the nitrogen gas pipeline when the plastic block removes, paint the back that finishes, open the stop valve on the gas vent, observe the bubbling point through lens, confirm the gas leakage point, whole operation of paining is gone on under a relatively sealed environment, the gas flow is slow, soapy water is difficult to be evaporated, the vexation of scribbling soapy water repeatedly has been avoided, make things convenient for operating personnel's observation.
3. Be provided with the spring between dead lever and the telescopic link, when the spring was compressed, the sponge piece was inseparable with nitrogen gas pipeline contact, guaranteed that soapy water paints evenly.
To sum up, this device operation process is convenient simple, can effectual improvement leak detection efficiency, and after the detection finishes, when not demolising the device, the device can be used as interim plugging device.
Drawings
Fig. 1 is a schematic front view of a gas leakage detecting and temporary plugging device for a nitrogen gas conveying pipeline according to the present invention;
FIG. 2 is a schematic top view of a nitrogen gas pipeline leakage detecting and temporary plugging device according to the present invention;
FIG. 3 is a schematic side view of a gas leakage detecting and temporary plugging device for a nitrogen gas transmission pipeline according to the present invention;
FIG. 4 is a schematic cross-sectional view of a semicircular pipe and a semicircular ring according to the present invention;
FIG. 5 is a schematic cross-sectional view of a semicircular pipe according to the present invention;
fig. 6 is a schematic structural diagram of a fixing rod according to the present invention.
In the figure: 1 semicircle pipe, 2 lens, 3 manometer, 4 gas vents, 5 fixed blocks, 6 rubber layers, 7 first spout, 8 magnet pieces, 9 semicircle rings, 10 iron plate, 11 dead levers, 12 telescopic links, 13 plastic block, 14 sponge pieces, 15 springs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, a nitrogen gas conveying pipeline gas leakage detecting and temporary plugging device comprises two semicircular pipes 1, wherein semicircular rings 9 are welded at two ends of each semicircular pipe 1, lenses 2 are embedded in the semicircular pipes 1 respectively, first sliding grooves 7 are formed in the outer walls of the semicircular pipes 1 respectively, the directions of the first sliding grooves 7 are consistent with the long axis direction of the semicircular pipes 1, one ends of magnet blocks 8 are inserted into the first sliding grooves 7, second sliding grooves are formed in the inner walls of the semicircular pipes 1 respectively, the second sliding grooves are parallel to the first sliding grooves 7, one ends of iron blocks 10 are inserted into the second sliding grooves, the iron blocks 10 are connected with the magnet blocks 8 in a matching manner, one ends of the iron blocks 10 far away from the magnet blocks 8 are connected with one ends of fixing rods 11, the other ends of the fixing rods 11 are provided with mounting grooves, and telescopic rods 12 are inserted into the mounting grooves, the spring 15 is placed between the inner wall of the telescopic rod 12 and the mounting groove, the plastic block 13 is connected to one end, far away from the mounting groove, of the telescopic rod 12 in an adhesive mode, the plastic block 13 is arc-shaped, the sponge block 14 is connected to the inner wall of the plastic block 13 in an adhesive mode, and the sponge block 14 is also arc-shaped.
Further, two fixing blocks 5 are respectively arranged on the outer wall of the semicircular pipe 1, and uniformly distributed screw holes are respectively formed in the fixing blocks 5.
Further, the semicircular pipe 1 is provided with a pressure gauge 3 and an exhaust port 4, and the pressure gauge 3 is the same as that on the nitrogen pipeline.
Further, a stop valve is installed on the exhaust port 4.
Further, the outer diameter of the semicircular tube 1 is equal to the outer diameter of the semicircular ring 9, and the inner diameter of the semicircular tube 1 is smaller than the inner diameter of the semicircular ring 9.
Further, the rubber layers 6 are respectively arranged on the inner walls of the semicircular pipe 1 and the semicircular ring 9, and the rubber layers 6 can improve the air tightness of the device.
Furthermore, the area of the lens 2 is not smaller than half of the area of the semicircular pipe 1, the area of the lens 2 is large, and the nitrogen pipeline inside the semicircular pipe 1 can be observed conveniently.
Furthermore, the semicircular pipe 1 is provided with a safety valve, and the safety valve can protect the device and prevent the lens 2 from being broken due to overlarge pressure.
In the embodiment, an air leakage area is determined, a proper device is selected, the inner diameter of a semicircular ring 9 is slightly larger than the outer diameter of a nitrogen pipeline, two semicircular pipes 1 are clamped on the outer side of the nitrogen pipeline to be detected, a fixed block 5 is connected by screws and nuts, the rubber layers 6 between the semicircular pipes 1 are clamped mutually at the moment, the rubber layers 6 on the semicircular ring 9 are clamped with the nitrogen pipeline, the device and the nitrogen pipeline form a sealing area, the reading of a pressure gauge 3 is observed, if the reading of the pressure gauge 3 rises, the area leaks air, if the reading of the pressure gauge 3 does not change, the area does not leak air, other areas are newly searched at the moment, an air leakage point is determined, after the air leakage area is determined, a magnet block 8 is pulled, the magnet block 8 moves along a first sliding groove 7, the magnet block 8 drives an iron block 10 to move, and when the iron block 10 moves, a fixed rod 11, finally drive the removal of plastic mass 13, the soapy water of flooding in advance can be paintd on the nitrogen gas pipeline on the sponge piece 14 when plastic mass 13 removes, after finishing painting, open the stop valve on the gas vent 4, observe the bubbling point through lens 2, confirm the gas leakage point, whole operation of paintings is gone on under a relatively sealed environment, gas flow is slow, soapy water is difficult to be evaporated, avoided scribbling the vexation of soapy water repeatedly, make things convenient for operating personnel's observation, be provided with spring 15 between dead lever 11 and the telescopic link 12, when spring 15 is compressed, sponge piece 14 is inseparable with the nitrogen gas pipeline contact, guarantee that soapy water paints evenly, this device operation process is convenient simple, can effectual improvement gas leakage detection efficiency, and after finishing detection, when not dismantling the device, the device can be used as interim plugging device.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a nitrogen gas conveying pipeline gas leakage detection and interim plugging device, includes semicircle pipe (1), its characterized in that, the quantity of semicircle pipe (1) is two, the both ends of semicircle pipe (1) are provided with semicircle ring (9) respectively, and imbed respectively on the semicircle pipe (1) and install lens (2), seted up first spout (7) respectively on the outer wall of semicircle pipe (1), the direction of first spout (7) is unanimous with the direction of semicircle pipe (1) major axis, and the one end that is equipped with magnet piece (8) in the interpolation of first spout (7), seted up the second spout respectively on the inner wall of semicircle pipe (1), the second spout is parallel with first spout (7), and the second spout interpolation is equipped with the one end of iron plate (10), iron plate (10) and magnet piece (8) accordant connection, and the one end that magnet piece (8) was kept away from to iron plate (10) is connected with the one end of dead lever (11), the mounting groove has been seted up to the other end of dead lever (11), mounting groove interpolation is equipped with telescopic link (12), spring (15) have been placed between the inner wall of telescopic link (12) and mounting groove, and telescopic link (12) keep away from the one end of mounting groove and splice and have plastic pellet (13), plastic pellet (13) are arc, and the inner wall rubberizing of plastic pellet (13) has connect sponge piece (14).
2. The nitrogen conveying pipeline gas leakage detecting and temporary leakage stopping device as claimed in claim 1, wherein two fixing blocks (5) are respectively arranged on the outer wall of the semicircular pipe (1), and uniformly distributed screw holes are respectively arranged on the fixing blocks (5).
3. The nitrogen conveying pipeline gas leakage detection and temporary leakage stopping device according to claim 1, wherein the semicircular pipe (1) is provided with a pressure gauge (3) and an exhaust port (4).
4. A nitrogen conveying pipeline gas leakage detecting and temporary plugging device according to claim 3, characterized in that a stop valve is installed on the exhaust port (4).
5. The nitrogen conveying pipeline gas leakage detection and temporary plugging device according to claim 1, wherein the outer diameter of the semicircular pipe (1) is equal to the outer diameter of the semicircular ring (9), and the inner diameter of the semicircular pipe (1) is smaller than the inner diameter of the semicircular ring (9).
6. The nitrogen conveying pipeline gas leakage detection and temporary leakage stopping device is characterized in that the inner walls of the semicircular pipe (1) and the semicircular ring (9) are respectively provided with a rubber layer (6).
7. The nitrogen conveying pipeline gas leakage detection and temporary plugging device according to claim 1, wherein the area of the lens (2) is not less than half of the area of the semicircular pipe (1).
8. The nitrogen conveying pipeline gas leakage detection and temporary plugging device according to claim 1, wherein a safety valve is installed on the semi-circular pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298673.4A CN109458564B (en) | 2018-11-02 | 2018-11-02 | Nitrogen gas pipeline leakage detecting and temporary plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298673.4A CN109458564B (en) | 2018-11-02 | 2018-11-02 | Nitrogen gas pipeline leakage detecting and temporary plugging device |
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| Publication Number | Publication Date |
|---|---|
| CN109458564A CN109458564A (en) | 2019-03-12 |
| CN109458564B true CN109458564B (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811298673.4A Active CN109458564B (en) | 2018-11-02 | 2018-11-02 | Nitrogen gas pipeline leakage detecting and temporary plugging device |
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| CN113280267B (en) * | 2021-03-04 | 2022-09-23 | 唐山市天然气有限公司 | Natural gas pipeline detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2524965A1 (en) * | 1982-04-09 | 1983-10-14 | Carl Yves | Automatic leak detecting stop valve for liquid circuit - uses venturi effect to maintain valve normally open with pressure sensitive diaphragm |
| CN2033900U (en) * | 1987-12-18 | 1989-03-08 | 大庆石油管理局油田建设公司 | Portable vacuum leak detector for weld seams on pipeline |
| KR20070037730A (en) * | 2007-03-19 | 2007-04-06 | 이근우 | Safety equipment of fire gas circuit breaker |
| CN201884941U (en) * | 2010-11-04 | 2011-06-29 | 中国石油天然气集团公司 | Magnetic circuit structure of pipeline magnetic flux leakage corrosion detector |
| CN204187290U (en) * | 2014-10-29 | 2015-03-04 | 李岩芳 | Oil and gas pipes repaired mouth vacuum checking device |
| CN206818370U (en) * | 2017-05-19 | 2017-12-29 | 上海江南长兴重工有限责任公司 | Marine piping air-tightness detection device |
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
-
2018
- 2018-11-02 CN CN201811298673.4A patent/CN109458564B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2524965A1 (en) * | 1982-04-09 | 1983-10-14 | Carl Yves | Automatic leak detecting stop valve for liquid circuit - uses venturi effect to maintain valve normally open with pressure sensitive diaphragm |
| CN2033900U (en) * | 1987-12-18 | 1989-03-08 | 大庆石油管理局油田建设公司 | Portable vacuum leak detector for weld seams on pipeline |
| KR20070037730A (en) * | 2007-03-19 | 2007-04-06 | 이근우 | Safety equipment of fire gas circuit breaker |
| CN201884941U (en) * | 2010-11-04 | 2011-06-29 | 中国石油天然气集团公司 | Magnetic circuit structure of pipeline magnetic flux leakage corrosion detector |
| CN204187290U (en) * | 2014-10-29 | 2015-03-04 | 李岩芳 | Oil and gas pipes repaired mouth vacuum checking device |
| CN206818370U (en) * | 2017-05-19 | 2017-12-29 | 上海江南长兴重工有限责任公司 | Marine piping air-tightness detection device |
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
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