CN116792600B - Emergency protection device for gas pipeline leakage - Google Patents
Emergency protection device for gas pipeline leakage Download PDFInfo
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- CN116792600B CN116792600B CN202310771733.4A CN202310771733A CN116792600B CN 116792600 B CN116792600 B CN 116792600B CN 202310771733 A CN202310771733 A CN 202310771733A CN 116792600 B CN116792600 B CN 116792600B
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- 230000007246 mechanism Effects 0.000 claims abstract description 95
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 238000004140 cleaning Methods 0.000 claims abstract description 36
- 239000000565 sealant Substances 0.000 claims abstract description 13
- 238000011282 treatment Methods 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000012945 sealing adhesive Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000010802 sludge Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 43
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention relates to the field of gas pipeline maintenance, in particular to an emergency protection device for gas pipeline leakage. The device comprises a gear ring mechanism, a frame, a rotating mechanism, an air jet cleaning mechanism and an unreeling sealing mechanism; the gear ring mechanism comprises two groups of half gear ring structures which are symmetrically distributed and can be folded into a complete annular gear ring assembly; the frame is provided with a driving device for driving the two groups of half gear ring structures to be unfolded or folded when in lifting, and the two groups of half gear ring structures are gradually folded when in descending and are gradually unfolded when in lifting; the air injection cleaning mechanism is arranged on the rotating mechanism; the unreeling sealing mechanism comprises a sealant drum, a sleeve shell, an end cover, a mounting column, a fixing plate and a limiting assembly, wherein the limiting assembly is uniformly provided with a plurality of groups around the central shaft of the mounting column, and the limiting assembly comprises a roller, a wheel carrier, a sliding column, a guide cylinder and an elastic piece a. The invention can realize more effective gas leakage prevention treatment by tightly winding the sealing film at the leakage position of the pipeline.
Description
Technical Field
The invention relates to the field of gas pipeline maintenance, in particular to an emergency protection device for gas pipeline leakage.
Background
After the gas pipeline is used for a long time, various damages such as aging, corrosion and the like can be inevitably generated, so that the gas pipeline is leaked, safety accidents are easy to cause, and the gas pipeline is dangerous, therefore, when the gas pipeline is damaged, emergency treatment measures are required to be adopted in time.
Chinese patent publication No. CN115523422a discloses a pipeline protection device with intelligent monitoring and preventing gas pipeline leakage, which comprises a box body, an emergency protection system, etc.; the right side inside the box body is connected with an emergency protection system, which can perform isolated protection on the gas pipeline connection part, and simultaneously perform gas leakage monitoring on the pipeline connection part, the rubber protection skin on the outer surface of the pipeline body is locked by utilizing two steel ropes, so that the leakage of the combustible gas is reduced from the root, and the excessive aggregation of the combustible gas in the box body is avoided; the maintenance personnel utilizes the gas protection joint to access protective gas to dilute the concentration of the fuel gas, and simultaneously utilizes the physical capacity expansion mode to further reduce the concentration of the fuel gas, thereby improving the maintenance safety.
However, the above technical solution has the following disadvantages:
when the rubber protection skin is locked through the steel rope, the opening end of the steel rope can not be used for completely locking the rubber protection skin at the position on the pipeline, a part of area which is not locked by the steel rope can exist on the rubber protection skin at the position, leaked fuel gas can possibly diffuse into the environment from the position, and the emergency treatment effect of fuel gas leakage is poor.
Disclosure of Invention
The invention aims at solving the problems in the background art and provides an emergency protection device for gas pipeline leakage, which can realize more effective gas leakage prevention treatment by tightly winding a sealing film at a pipeline leakage position.
The technical scheme of the invention relates to an emergency protection device for gas pipeline leakage, which comprises a gear ring mechanism, a frame, a rotating mechanism, an air injection cleaning mechanism and an unreeling sealing mechanism; the gear ring mechanism comprises two groups of half gear ring structures which are symmetrically distributed and can be folded into a complete annular gear ring assembly; the frame is provided with a driving device for driving the two groups of half gear ring structures to be unfolded or folded when in lifting, and the two groups of half gear ring structures are gradually folded when in descending and are gradually unfolded when in lifting; the rotating mechanism rotates along the circumferential direction of the complete annular gear ring assembly; the air injection cleaning mechanism is arranged on the rotating mechanism; the unreeling sealing mechanism comprises a sealant drum, a sleeve shell, an end cover, a mounting column, a fixing plate and a limiting component, wherein the sealant drum is sleeved on the outer peripheral surface of the sleeve shell, the inner side of the sleeve shell is hollow, the end part of the sleeve shell is connected with the end cover, the end cover is rotationally arranged on the mounting column, the mounting column is arranged on a rotating mechanism, the fixing plate is arranged on the mounting column, the limiting component is uniformly arranged in a plurality of groups around the central shaft of the mounting column, the limiting component comprises a roller, a wheel frame, a sliding column, a guide cylinder and an elastic piece a, the roller is rotationally arranged on the wheel frame, the wheel frame is arranged on the sliding column, the sliding column is slidingly arranged on the guide cylinder, the guide cylinder is arranged on the fixing plate, and two ends of the elastic piece a are respectively connected with the wheel frame and the guide cylinder, and the sleeve shell is provided with a plurality of grooves uniformly distributed around the central shaft of the sleeve shell and form a rolling joint surface in a circular undulating shape for the roller to roll.
Preferably, the half gear ring structure comprises an outer gear ring, a mounting plate and an inner gear ring, wherein the outer gear ring, the mounting plate and the inner gear ring are of semi-annular structures and are coaxially distributed, and the outer gear ring, the mounting plate and the inner gear ring are sequentially connected from outside to inside.
Preferably, the rotating mechanism comprises a mounting cover, a motor a, a gear a and a gear b, wherein the motor a is arranged in the mounting cover, the motor a is in driving connection with the gear a, the gear b is rotatably arranged in the mounting cover, the gear a is in meshed connection with the outer gear ring, the gear b is in meshed connection with the inner gear ring, and a penetrating channel for the semi-gear ring structure to penetrate through is formed in the mounting cover.
Preferably, the buffer mechanism comprises two groups of buffer components which are symmetrically arranged, the buffer components comprise a connecting table a, a sliding rod, a sliding barrel, an elastic piece b and a connecting table b, the connecting table a is arranged on a wheel frame, one end of the sliding rod is rotationally connected with the connecting table a, the other end of the sliding rod is slidingly arranged in the sliding barrel, the sliding barrel is provided with a slide way for sliding the sliding rod, the sliding barrel is rotationally arranged on the connecting table b, the connecting table b is arranged on a fixed plate, the elastic piece b is positioned on the inner side of the slide way, and two ends of the elastic piece b are respectively connected with the sliding rod and the bottom end of the slide way.
Preferably, the driving device comprises a double-sided rack, a transmission mechanism and a lifting mechanism for driving the double-sided rack to lift, wherein the transmission mechanism is symmetrically arranged in two groups about the double-sided rack, the transmission mechanism comprises a rotating frame, a gear c, a rotating shaft a, a lifting frame, a rack, a gear d, a rotating shaft b, a sliding rod and a guide frame, two ends of the rotating frame are respectively connected with a half gear ring structure and the rotating shaft a, the gear c is arranged on the rotating shaft a, the rotating shaft a is rotatably arranged on the lifting frame, the rack and the sliding rod are vertically arranged on the lifting frame, the rack is meshed with the gear d, the gear d is arranged on the rotating shaft b, the rotating shaft b is rotatably arranged on a rack, the sliding rod is slidably arranged on the guide frame, and the guide frame is arranged on the rack; the double-sided rack is vertically arranged and is provided with two rows of meshing teeth which are horizontally and symmetrically distributed, and each row of meshing teeth is simultaneously meshed and connected with a gear c and a gear d in a group of transmission mechanisms.
Preferably, the lifting mechanism comprises a motor b, a screw rod nut and a moving block, wherein the motor b is arranged on the frame, the motor b is in driving connection with the screw rod, the screw rod is rotationally arranged on the frame, the screw rod is in threaded connection with the screw rod nut, the screw rod nut is connected with the moving block, and the moving block is arranged on the double-sided rack.
Preferably, the lifting mechanism is a lifting cylinder or a hydraulic cylinder.
Preferably, the jet cleaning mechanism comprises an air pump, an air pipe and a spray head, the air pump is arranged on the rotating mechanism, the air outlet end of the air pump, the air pipe and the spray head are sequentially communicated, and the spray head faces the central shaft of the complete annular gear ring assembly.
Preferably, the sealed film cylinder comprises a mounting cylinder and a sealed film, wherein the sealed film is wound on the mounting cylinder, and the mounting cylinder is sleeved on the sleeve shell.
Preferably, the method for using the emergency protection device for gas pipeline leakage comprises the following steps:
s1, excavating the ground at a leakage position of a gas pipeline, exposing the leakage position of the pipeline, and cleaning a soil pit at the periphery of the circumferential surface of the pipeline at the leakage position;
s2, cleaning the peripheral surface of the pipeline at the leakage position, and cleaning away attached soil and water tracks;
s3, moving the emergency protection device for gas pipeline leakage to the ground of the leakage pipeline to enable the gear ring mechanism to be located above the pipeline;
s4, starting the driving device to enable the two groups of half gear ring structures to be folded into a complete annular gear ring assembly when descending, and surrounding the gas pipeline inside;
s5, starting a rotating mechanism, wherein the rotating mechanism moves on the complete annular gear ring assembly and drives the air injection cleaning mechanism and the unreeling sealing mechanism to rotate;
s6, performing high-pressure jet cleaning treatment on the circumferential surface of the pipeline at the leakage position by the jet cleaning mechanism, and further cleaning away sludge and water;
s7, after the pipeline is cleaned, adhering one end of the sealing film barrel to the peripheral surface of the pipeline, rotating the sealing film barrel along with the sleeve shell, keeping the sealing film unreeled by the sealing film barrel in a tensioning state all the time, tightly winding the sealing film barrel on the peripheral surface of the gas pipeline, and cutting the sealing film after winding a plurality of layers;
and S8, driving the two groups of half gear ring structures to ascend through the driving device, and unfolding and upwards moving the two groups of half gear ring structures away from the gas pipeline.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention can realize more effective gas leakage prevention treatment by tightly winding the sealing film at the leakage position of the pipeline. The sealing adhesive reel rotates along with the sleeve shell and the end cover, and the sealing adhesive film is always in a tensioning state, so that the sealing adhesive film can be tightly adhered to a pipeline, and the sealing and leaking stoppage effect can be further improved through multiple layers. When the sealed film is tensioned, along with the continuous rotation of the rotating mechanism, the sleeve shell can press the roller through the rolling joint surface of the circular undulating shape, the roller compresses the elastic piece a through the wheel frame, so that the sleeve shell can intermittently rotate, and the sealed film barrel is driven to rotate in the rotating process, thereby realizing unreeling of the sealed film and fully plugging a gas leakage position on a pipeline.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a structure for realizing rotation of two mounting plates during lifting in an embodiment of the present invention;
FIG. 3 is a schematic diagram of the lifting principle of the double-sided rack in the embodiment of the invention;
FIG. 4 is a schematic view of the rotation principle of the mounting cover according to the embodiment of the present invention;
FIG. 5 is a schematic view of an intermittent rotation structure of the casing according to an embodiment of the present invention;
FIG. 6 is an enlarged view of the structure at A in FIG. 5;
FIG. 7 is a schematic view of a sealant drum mounted on a package according to an embodiment of the present invention;
fig. 8 is a schematic diagram of the structure of the air pump according to the embodiment of the invention.
Reference numerals: 1. a sleeve shell; 2. an end cap; 201. a clamping table part; 3. a mounting column; 4. a fixing plate; 5. a roller; 6. a wheel carrier; 7. a sliding column; 8. a guide cylinder; 9. an elastic member a; 10. a connecting table a; 11. a slide bar; 12. a slide cylinder; 13. a connection station b; 14. a mounting cover; 141. a through passage; 15. a motor a; 16. a gear a; 17. a gear b; 181. an outer ring gear; 182. a mounting plate; 183. an inner gear ring; 19. a rotating frame; 20. a gear c; 21. a rotating shaft a; 22. a lifting frame; 23. a rack; 24. a gear d; 241. a rotation shaft b; 25. a slide bar; 26. a guide frame; 27. double-sided racks; 28. a motor b; 29. a screw rod; 30. a moving block; 31. a mounting frame; 311. a support frame; 32. a hanging ring; 33. a sealant drum; 331. a mounting cylinder; 332. sealing film; 34. an air pump; 35. a gas pipe; 36. a spray head.
Detailed Description
Example 1
As shown in fig. 1 to 8, the emergency protection device for gas pipeline leakage provided in this embodiment includes a gear ring mechanism, a frame, a rotating mechanism, an air-jet cleaning mechanism and an unreeling sealing mechanism.
As shown in fig. 1, the frame includes mounting bracket 31, support frame 311 and rings 32, and support frame 311 sets up four altogether and distributes and set up in mounting bracket 31 bottom four corners, and rings 32 set up at mounting bracket 31 top, and accessible rings 32 hoist and put this emergency protection device to near the gas leakage pipeline position.
As shown in fig. 1, 2 and 4, the gear ring mechanism comprises two groups of half gear ring structures which are symmetrically distributed and can be folded into a complete annular gear ring assembly, each half gear ring structure comprises an outer gear ring 181, a mounting plate 182 and an inner gear ring 183, each outer gear ring 181, each mounting plate 182 and each inner gear ring 183 are semi-annular structures and are coaxially distributed, and each outer gear ring 181, each mounting plate 182 and each inner gear ring 183 are sequentially connected from outside to inside.
As shown in fig. 1 and 2, a driving device for driving the two sets of half gear ring structures to be unfolded or folded when ascending and descending is arranged on the frame, the two sets of half gear ring structures are gradually folded when descending, and the two sets of half gear ring structures are gradually unfolded when ascending, so that the action steps are simple. Only one driving device is needed to realize, the whole structure is compact, the occupied space is small, and the use cost is low.
As shown in fig. 1, the rotating mechanism rotates along the circumferential direction of the complete annular gear ring assembly, the rotating mechanism comprises a mounting cover 14, a motor a15, a gear a16 and a gear b17, the motor a15 is arranged in the mounting cover 14, the motor a15 is in driving connection with the gear a16, the gear b17 is rotatably arranged in the mounting cover 14, the gear a16 is in meshed connection with the outer gear ring 181, the gear b17 is in meshed connection with the inner gear ring 183, and a penetrating channel 141 for the semi-gear ring structure to penetrate is arranged on the mounting cover 14. The motor a15 can drive the gear a16 to rotate, the gear a16 and the gear b17 respectively rotate at the outer gear ring 181 and the inner gear ring 183, the mounting cover 14 rotates around the complete annular gear ring assembly, the mounting cover 14 can drive the air jet cleaning mechanism and the unreeling sealing mechanism to rotate, and air jet cleaning and sealing winding treatment can be sequentially carried out on the pipeline.
As shown in fig. 8, the air-jet cleaning mechanism is disposed on the rotating mechanism, the air-jet cleaning mechanism includes an air pump 34, an air pipe 35 and a nozzle 36, the air pump 34 is disposed on the rotating mechanism, the air outlet end of the air pump 34, the air pipe 35 and the nozzle 36 are sequentially communicated, the nozzle 36 faces the central axis of the complete annular gear ring assembly, high-pressure air output by the air pump 34 can be conveyed to the nozzle 36 through the air pipe 35, the nozzle 36 jets the high-pressure air to a gas pipeline, cleaning treatment on the circumferential surface of the pipeline is realized, and the sealing film 332 is conveniently and subsequently wound and stuck.
As shown in fig. 4 to 7, the unreeling sealing mechanism comprises a sealant drum 33, a sleeve shell 1, an end cover 2, a mounting column 3, a fixing plate 4 and a limiting component, wherein the sealant drum 33 comprises a mounting drum 331 and a sealing film 332, the sealing film 332 is wound on the mounting drum 331, a firm penetrating sleeve of the mounting drum 331 is arranged on the sleeve shell 1, the mounting drum 331 is provided with an inner wall which can be sleeved on the periphery of the sleeve shell 1, and the inner side of the sleeve shell 1 is hollow. The end of the sleeve shell 1 is connected with the end cover 2, in particular to detachable connection, so that the limiting component can be conveniently placed into the sleeve shell 1. The end cover 2 is rotatably arranged on the mounting column 3, the mounting column 3 is arranged on the rotating mechanism, and the fixing plate 4 is arranged on the mounting column 3. The limiting component evenly sets up the multiunit around the center pin of erection column 3, limiting component includes gyro wheel 5, wheel carrier 6, slip post 7, guide cylinder 8 and elastic component a9, gyro wheel 5 rotates and sets up on wheel carrier 6, wheel carrier 6 sets up on slip post 7, slip post 7 slides and sets up on guide cylinder 8, guide cylinder 8 sets up on fixed plate 4, elastic component a9 both ends are connected with wheel carrier 6 and guide cylinder 8 respectively, elastic component a9 can adopt compression spring, easy to assemble, the stable in position can not drop. The jacket shell 1 has a plurality of grooves uniformly distributed around the central axis of the jacket shell 1 and forms a rolling contact surface on the inside in the form of a circular undulation for the rollers 5 to roll.
When the sealant drum 33 is unwound as the casing 1 rotates, the sealant film 332 is always in a tensioned state so as to be tightly wound and adhered to the gas pipe. When more sealing film 332 needs to be unreeled, the sleeve shell 1 rotates on the mounting column 3 through the end cover 2, the roller 5 is intermittently pressed, the sleeve shell 1 is intermittently rotated by the limiting component, and finally the sealing film 332 can be released always in a tensioning state. The end cover 2 is provided with the clamping table part 201 which can be clamped at the groove, so that the end cover 2 and the sleeve shell 1 can be connected and positioned, and the disassembly and the assembly are convenient.
The application method of the emergency protection device for gas pipeline leakage comprises the following steps:
s1, excavating the ground at a leakage position of a gas pipeline, exposing the leakage position of the pipeline, and cleaning a soil pit at the periphery of the circumferential surface of the pipeline at the leakage position;
s2, cleaning the peripheral surface of the pipeline at the leakage position, and cleaning away attached soil and water tracks;
s3, moving the emergency protection device for gas pipeline leakage to the ground of the leakage pipeline to enable the gear ring mechanism to be located above the pipeline;
s4, starting the driving device, so that the two groups of half gear ring structures are folded into a complete annular gear ring assembly when descending, and the gas pipeline is enclosed inside, the complete annular gear ring assembly and the gas pipeline do not need to be coaxial, only the gas pipeline needs to be enclosed inside, and the use requirement is not high;
s5, starting a rotating mechanism, wherein the rotating mechanism moves on the complete annular gear ring assembly and drives the air jet cleaning mechanism and the unreeling sealing mechanism to rotate, and then starting the air jet cleaning mechanism and then starting the unreeling sealing mechanism;
s6, the air jet cleaning mechanism carries out high-pressure air jet cleaning treatment on the circumferential surface of the pipeline at the leakage position, so that sludge and water are further cleaned, and the sealing film 332 is conveniently and firmly adhered;
s7, after the pipeline is cleaned, one end of the sealing adhesive reel 33 is adhered to the peripheral surface of the pipeline, namely the movable end of the sealing film 332 is adhered to the pipeline, the sealing adhesive reel 33 rotates along with the sleeve shell 1, the sealing film 332 unreeled by the sealing adhesive reel 33 is always in a tensioning state, the sealing adhesive reel 33 is tightly wound on the peripheral surface of the gas pipeline, the sealing film 332 is cut off after a plurality of layers of winding layers, and the multi-layer sealing film 332 can realize an effective plugging effect;
s8, driving the two groups of half gear ring structures to ascend through the driving device, unfolding the two groups of half gear ring structures and moving the two groups of half gear ring structures upwards away from the gas pipeline, and then transferring the emergency protection device to other positions to wait for subsequent further pipeline maintenance treatment, such as replacement of a new pipeline.
This embodiment enables more efficient gas leakage prevention by tightly wrapping the seal film 332 around the pipe leakage. The sealant drum 33 rotates along with the sleeve shell 1 and the end cover 2, and the sealing film 332 is always in a tension state, so that the sealing film can be tightly adhered to a pipeline, and the sealing and plugging effects can be further improved through multiple layers. When the sealing film 332 is tensioned, along with the continuous rotation of the rotating mechanism, the sleeve shell 1 presses the roller 5 through the rolling contact surface of the circular undulating shape, the roller 5 compresses the elastic piece a9 through the wheel frame 6, so that the sleeve shell 1 can intermittently rotate, and the sealing film winding drum 33 is driven to rotate in the rotating process, thereby unwinding the sealing film 332 and fully sealing the gas leakage position on the pipeline. The sludge, sundries and water on the circumferential surface of the pipeline can be cleaned before plugging, and then the high-pressure jet cleaning is performed by using the jet cleaning mechanism, so that the sealing film 332 can be firmly wound and stuck on the pipeline to cover the gas leakage position.
Example two
Compared with the first embodiment, in this embodiment, as shown in fig. 6, the emergency protection device for gas pipeline leakage further includes a buffer mechanism, the buffer mechanism includes two groups of buffer components symmetrically arranged, the buffer components include a connection table a10, a sliding rod 11, a sliding barrel 12, an elastic component b and a connection table b13, the connection table a10 is arranged on the wheel frame 6, one end of the sliding rod 11 is rotationally connected with the connection table a10, the other end of the sliding rod 11 is slidingly arranged in the sliding barrel 12, the sliding barrel 12 is provided with a slide way for sliding the sliding rod 11, the sliding barrel 12 is rotationally arranged on a connection table b13, the connection table b13 is arranged on the fixed plate 4, the elastic component b is positioned at the inner side of the slide way and two ends of the elastic component b are respectively connected with the sliding rod 11 and the bottom end of the slide way, and the elastic component b can be stably stretched in the slide way by adopting a compression spring and cannot fall out.
In this embodiment, the connection platform a10, the slide rod 11, the slide cylinder 12, the elastic member b and the connection platform b13 can assist the limiting assembly to tension, so that the roller 5 is always attached to the inner wall of the package casing 1, and the package casing 1 drives the sealant roll 33 to unwind the tensioned sealant film 332.
Example III
As shown in fig. 1-3, in the emergency protection device for gas pipeline leakage according to the present embodiment, compared with the first embodiment, the driving device includes a double-sided rack 27, a transmission mechanism and a lifting mechanism for driving the double-sided rack 27 to lift, the transmission mechanism is symmetrically disposed about the double-sided rack 27, the transmission mechanism includes a rotating frame 19, a gear c20, a rotating shaft a21, a lifting frame 22, a rack 23, a gear d24, a rotating shaft b241, a sliding rod 25 and a guiding frame 26, two ends of the rotating frame 19 are respectively connected with the half gear structure and the rotating shaft a21, the gear c20 is disposed on the rotating shaft a21, the rotating shaft a21 is rotatably disposed on the lifting frame 22, the rack 23 and the sliding rod 25 are vertically disposed on the lifting frame 22, the rack 23 is in meshed connection with the gear d24, the gear d24 is disposed on the rotating shaft b241, the rotating shaft b is rotatably disposed on the frame 241, the sliding rod 25 is slidably disposed on the guiding frame 26, and the guiding frame 26 is disposed on the frame; the double-sided rack 27 is vertically arranged and is provided with two rows of meshing teeth which are horizontally and symmetrically distributed, and each row of meshing teeth is simultaneously meshed with a gear c20 and a gear d24 in a group of transmission mechanisms.
When the lifting mechanism drives the double-sided rack 27 to ascend, the double-sided rack 27 drives the gears d24 on two sides to rotate, the gears d24 drive the rack 23 to descend, the rack 23 drives the lifting frame 22 to descend, and the sliding rod 25 slides downwards on the guide frame 26 to play a role in guiding. The lifting frame 22 drives the gear c20, the rotating frame 19 and the half gear ring structure to move downwards through the rotating shaft a 21. Simultaneously, the double-sided rack 27 also drives the gear c20 to rotate, the gear c20 drives the rotating frames 19 to be gradually closed through the rotating shaft a21, the two rotating frames 19 drive the two groups of half gear ring structures to be closed, and finally the two outer gear rings 181 are connected, and the two inner gear rings 183 are connected. The two groups of half gear ring structures can be synchronously folded when descending, and the two groups of half gear ring structures can be synchronously unfolded when ascending when the lifting mechanism drives the double-sided rack 27 to descend.
As shown in fig. 3, the lifting mechanism comprises a motor b28, a screw rod 29, a screw rod nut and a moving block 30, wherein the motor b28 is arranged on the frame, the motor b28 is in driving connection with the screw rod 29, the screw rod 29 is rotatably arranged on the frame, the screw rod 29 is in threaded connection with the screw rod nut, the screw rod nut is connected with the moving block 30, and the moving block 30 is arranged on the double-sided rack 27. The motor b28 can drive the screw rod 29 to rotate, the screw rod 29 drives the screw rod nut to move, the screw rod nut drives the moving block 30 to move, the moving block 30 drives the double-sided rack 27 to lift, the threaded connection between the screw rod 29 and the screw rod nut has self-locking property, and the double-sided rack 27 can be stably maintained at the adjusted position.
In addition, the lifting mechanism may be a lifting cylinder or a hydraulic cylinder, as long as lifting of the double-sided rack 27 can be achieved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (6)
1. An emergency protection device for gas pipeline leakage, comprising:
the gear ring mechanism comprises two groups of half gear ring structures which are symmetrically distributed and can be folded into a complete annular gear ring assembly;
the machine frame is provided with a driving device for driving the two groups of half gear ring structures to be unfolded or folded when in lifting, and the two groups of half gear ring structures are gradually folded when in descending and are gradually unfolded when in lifting;
a rotating mechanism which rotates along the circumferential direction of the complete annular gear ring assembly;
the air injection cleaning mechanism is arranged on the rotating mechanism;
the unreeling sealing mechanism comprises a sealing glue reel (33), a sleeving shell (1), an end cover (2), a mounting column (3), a fixed plate (4) and a limiting component, wherein the sealing glue reel (33) is sleeved on the outer peripheral surface of the sleeving shell (1), the inner side of the sleeving shell (1) is hollow, the end part of the sleeving shell (1) is connected with the end cover (2), the end cover (2) is rotationally arranged on the mounting column (3), the mounting column (3) is arranged on the rotating mechanism, the fixed plate (4) is arranged on the mounting column (3), the limiting component is uniformly provided with a plurality of groups around the central shaft of the mounting column (3), the limiting component comprises a roller (5), a wheel frame (6), a sliding column (7), a guide cylinder (8) and an elastic piece a (9), the roller (5) is rotationally arranged on the wheel frame (6), the sliding column (7) is slidingly arranged on the guide cylinder (8), the guide cylinder (8) is rotationally arranged on the fixed plate (4), and the two ends of the elastic piece a (9) are respectively connected with the roller frame (6) and the guide cylinder (8) and the roller frame (1) is provided with a plurality of rolling grooves which are uniformly distributed around the inner side of the roller frame (1) to form a rolling circle;
the semi-gear ring structure comprises an outer gear ring (181), a mounting plate (182) and an inner gear ring (183), wherein the outer gear ring (181), the mounting plate (182) and the inner gear ring (183) are of semi-annular structures and are coaxially distributed, and the outer gear ring (181), the mounting plate (182) and the inner gear ring (183) are sequentially connected from outside to inside;
the rotating mechanism comprises a mounting cover (14), a motor a (15), a gear a (16) and a gear b (17), wherein the motor a (15) is arranged in the mounting cover (14), the motor a (15) is in driving connection with the gear a (16), the gear b (17) is rotatably arranged in the mounting cover (14), the gear a (16) is in meshed connection with an outer gear ring (181), the gear b (17) is in meshed connection with an inner gear ring (183), and a penetrating channel (141) for a half gear ring structure to penetrate is formed in the mounting cover (14);
the driving device comprises a double-sided rack (27), a transmission mechanism and a lifting mechanism for driving the double-sided rack (27) to lift, wherein the transmission mechanism is symmetrically arranged on the double-sided rack (27) and comprises a rotating frame (19), a gear c (20), a rotating shaft a (21), a lifting frame (22), a rack (23), a gear d (24), a rotating shaft b (241), a sliding rod (25) and a guide frame (26), two ends of the rotating frame (19) are respectively connected with a half gear ring structure and the rotating shaft a (21), the gear c (20) is arranged on the rotating shaft a (21), the rotating shaft a (21) is rotatably arranged on the lifting frame (22), the rack (23) and the sliding rod (25) are vertically arranged on the lifting frame (22), the rack (23) is meshed with the gear d (24), the gear d (24) is arranged on the rotating shaft b (22), the rotating shaft b (241) is rotatably arranged on the frame 241, the sliding rod (25) is slidingly arranged on the guide frame (26), and the guide frame (26) is arranged on the frame. The double-sided rack (27) is vertically arranged and is provided with two rows of meshing teeth which are horizontally and symmetrically distributed, and each row of meshing teeth is simultaneously meshed and connected with a gear c (20) and a gear d (24) in a group of transmission mechanisms;
the jet cleaning mechanism comprises an air pump (34), an air pipe (35) and a spray head (36), wherein the air pump (34) is arranged on the rotating mechanism, an air outlet end of the air pump (34), the air pipe (35) and the spray head (36) are sequentially communicated, and the spray head (36) faces to the central shaft of the complete annular gear ring assembly.
2. The emergency protection device for gas pipeline leakage according to claim 1, further comprising a buffer mechanism, wherein the buffer mechanism comprises two groups of buffer components which are symmetrically arranged, the buffer components comprise a connecting table a (10), a sliding rod (11), a sliding barrel (12), an elastic piece b and a connecting table b (13), the connecting table a (10) is arranged on a wheel frame (6), one end of the sliding rod (11) is rotationally connected with the connecting table a (10), the other end of the sliding rod (11) is slidingly arranged in the sliding barrel (12), the sliding barrel (12) is provided with a sliding way for the sliding rod (11) to slide, the sliding barrel (12) is rotationally arranged on the connecting table b (13), the connecting table b (13) is arranged on a fixed plate (4), the elastic piece b is positioned on the inner side of the sliding way, and two ends of the elastic piece b are respectively connected with the sliding rod (11) and the bottom end of the sliding way.
3. The emergency protection device for gas pipeline leakage according to claim 1, wherein the lifting mechanism comprises a motor b (28), a screw rod (29), a screw rod nut and a moving block (30), the motor b (28) is arranged on the frame, the motor b (28) is in driving connection with the screw rod (29), the screw rod (29) is rotatably arranged on the frame, the screw rod (29) is in threaded connection with the screw rod nut, the screw rod nut is connected with the moving block (30), and the moving block (30) is arranged on the double-sided rack (27).
4. The emergency protection device for gas pipeline leakage according to claim 1, wherein the lifting mechanism is a lifting cylinder or a hydraulic cylinder.
5. The emergency protection device for gas pipeline leakage according to claim 1, wherein the sealant drum (33) comprises a mounting drum (331) and a sealing film (332), the sealing film (332) is wound on the mounting drum (331), and the mounting drum (331) is sleeved on the sleeve shell (1).
6. The emergency protection device for gas pipeline leakage according to claim 5, wherein the using method comprises the following steps:
s1, excavating the ground at a leakage position of a gas pipeline, exposing the leakage position of the pipeline, and cleaning a soil pit at the periphery of the circumferential surface of the pipeline at the leakage position;
s2, cleaning the peripheral surface of the pipeline at the leakage position, and cleaning away attached soil and water tracks;
s3, moving the emergency protection device for gas pipeline leakage to the ground of the leakage pipeline to enable the gear ring mechanism to be located above the pipeline;
s4, starting the driving device to enable the two groups of half gear ring structures to be folded into a complete annular gear ring assembly when descending, and surrounding the gas pipeline inside;
s5, starting a rotating mechanism, wherein the rotating mechanism moves on the complete annular gear ring assembly and drives the air injection cleaning mechanism and the unreeling sealing mechanism to rotate;
s6, performing high-pressure jet cleaning treatment on the circumferential surface of the pipeline at the leakage position by the jet cleaning mechanism, and further cleaning away sludge and water;
s7, after the pipeline is cleaned, adhering one end of a sealing adhesive reel (33) to the peripheral surface of the pipeline, enabling the sealing adhesive reel (33) to rotate along with the sleeve shell (1), enabling the sealing adhesive film (332) unreeled by the sealing adhesive reel (33) to be in a tensioning state all the time, tightly winding the sealing adhesive reel (33) on the peripheral surface of the gas pipeline, and cutting off the sealing adhesive film (332) after winding a plurality of layers;
and S8, driving the two groups of half gear ring structures to ascend through the driving device, and unfolding and upwards moving the two groups of half gear ring structures away from the gas pipeline.
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