CN216198288U - Pressurized quick permanent plugging device for gas leakage of underwater pipe gallery - Google Patents

Abstract

The utility model relates to a pressurized rapid permanent plugging device for gas leakage of an underwater pipe gallery, which comprises the underwater pipe gallery and a leakage channel, wherein a base is distributed in the underwater pipe gallery at the diagonal position of the leakage channel; the base is provided with jacking equipment, the jacking equipment is provided with a sleeve, and the sleeve is in threaded connection with a long pressure rod; the top end of the long pressure rod is a hollow pressure rod which is communicated with a grouting pipe; the upper end of the hollow compression bar is in threaded connection with a supporting plate and a plugging plate, the plugging plate covers the periphery of the leakage channel, and a plugging cavity is formed between the plugging plate and the inner wall of the underwater pipe gallery; the top end of the hollow compression bar extends into the plugging cavity; the periphery of the supporting plate is connected with the underwater pipe gallery through bolts. The utility model can permanently block the leakage channel under the action of the expansion bolt and the slurry, and the blocking structure is stable.

Description

Pressurized quick permanent plugging device for gas leakage of underwater pipe gallery

Technical Field

The utility model relates to the technical field of leakage plugging of an underwater pipe gallery, in particular to a quick and permanent under-pressure plugging device for gas leakage of the underwater pipe gallery.

Background

With the increasing of ground traffic pressure and the continuous development of underwater construction technology, underwater tunnels crossing the sea/crossing the river and the like have great application in the development of urban and regional traffic networks in China due to the advantages of solving the problem of difficult cross-river traffic, relieving traffic pressure among cities, promoting economic and cultural communication among cities, having small construction influence, being beneficial to environmental protection and the like.

In the construction of underwater tunnels, the underwater geological conditions are complex and changeable, and many tunnel projects need to cross soft soil layers rich in high-pressure harmful gases at the bottoms of rivers and lakes. High-pressure harmful gas in the stratum can distribute the gasbag that is not uniform in size and pressure is higher around tunnel structure, and the gasbag breaks and soft soil body warp, can lead to the stratum inhomogeneous settlement, constitutes the threat to tunnel internal environment and safety moreover.

High-pressure gas can reveal and release through the sealed clearance of shield segment seam crossing simultaneously, leads to harmful gas such as methane to gush into the tunnel, not only can influence tunnel structure safety, more probably causes great incident such as explosion.

Although the inside safety devices such as harmful gas intelligent monitoring warning and exhaust of being equipped with of tunnel under water, nevertheless flammable and explosive, poisonous high-pressure gas's such as methane reveal and must adopt the mode of cooling exhaust to carry out quick area and press the shutoff.

The gas pressure at the leakage position of the shield segment joint is generally over 1MPa, so that the shield segment joint cannot be quickly plugged, and plugging measures are limited. If the tunnel plugging device that bulletin number CN209557039U disclosed, its scheme is through the gasbag aerify and the mode of slip casting shutoff is stopped up the tunnel leak source, guarantees the laminating effect of gasbag and leak source through slip casting.

When the air bag is used for plugging, gas usually leaks through pipe gallery joints or cracks and the like, the leaking part cannot be plugged through the air bag, and meanwhile, in the face of the condition of high-pressure gas leakage, the stability of the plugging structure is extremely easily influenced by the impact force generated by the high-pressure gas, so that plugging failure is caused, and plugging construction is difficult to perform.

Even if the conventional liquid repairing material on the market is solidified quickly, the conventional liquid repairing material is dispersed by high-pressure gas when being injected into a leakage position, and the plugging construction cannot be carried out. Part of the plugging devices can only be used as temporary plugging measures, and if long-time plugging is needed, the plugging devices need to be kept at gas leakage positions. Inside the plugging device long term installation piping lane of certain volume, not only can influence the normal operation of piping lane to high-pressure gas acts on plugging device for a long time and can lead to the fact the shutoff to become invalid gradually, and the crack of revealing department also can enlarge thereupon.

Besides, the continuous release of high-pressure gas can cause the deformation of the shield segment, destroy the waterproof capability of the segment, further cause the underground water to flow into the pipe gallery, cause serious consequences such as stratum disturbance and segment fracture, and therefore the gas leakage part must be permanently plugged. Based on above reason, provide a quick permanent plugging device of area pressure for underwater pipe gallery gas leakage.

Disclosure of Invention

The utility model aims to solve the problems that the existing plugging device is unstable in plugging and difficult to effectively, timely and permanently plug high-pressure gas, and provides a quick and permanent plugging device with pressure for gas leakage of an underwater pipe gallery.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the pressurized rapid permanent plugging device for gas leakage of the underwater pipe gallery comprises a circular underwater pipe gallery and a leakage channel, wherein the circular underwater pipe gallery and the leakage channel are formed by splicing a plurality of shield segments, the leakage channel is distributed at the joint of the shield segments, and a base is distributed in the underwater pipe gallery at the diagonal position of the leakage channel;

the base is provided with jacking equipment, the jacking equipment is provided with a sleeve, the sleeve is in threaded connection with a long pressure rod, the long pressure rod is in a straight rod shape formed by splicing a plurality of short pressure rods, and the long pressure rod penetrates through the center of the underwater pipe gallery;

the short pressure rod at the top end of the long pressure rod is a hollow pressure rod, the hollow pressure rod is radially communicated with a grouting pipe, and the grouting pipe is sequentially provided with a one-way valve, a valve and a pressure gauge;

the upper end of the hollow compression bar is in threaded connection with an arc-shaped supporting plate and a flexible plugging plate, the plugging plate is bonded above the supporting plate, the cross section of the plugging plate is in a shape like the Chinese character 'ji', the plugging plate covers the periphery of the leakage channel to plug, the plugging plate is tightly attached to the inner wall of the underwater pipe gallery, a plugging cavity is formed between the plugging plate and the inner wall of the underwater pipe gallery, and the plugging cavity is correspondingly communicated with the leakage channel;

the top end of the hollow compression bar sequentially penetrates through the supporting plate and the plugging plate to extend into the plugging cavity to be communicated; the periphery of the supporting plate is connected with the underwater pipe gallery through bolts.

Furthermore, the shield segment at the position of the leakage passage is an upper tube segment, the shield segment at the position of the base is a lower tube segment, and a connecting line between the upper tube segment and the lower tube segment penetrates through the center of the underwater pipe gallery.

Furthermore, the base is tightly pressed against the lower pipe sheet and comprises a seat plate and support plates arranged on two sides of the seat plate, the seat plate is connected with jacking equipment through bolts, the jacking equipment is a jack, and a piston rod of the jacking equipment is provided with the sleeve;

the support plates on two sides are arranged in a splayed shape, and the support plates are abutted against the lower pipe sheet and attached to the lower pipe sheet.

Furthermore, a plurality of short pressure rods are sequentially connected through threads, and the short pressure rod at the bottom end of the long pressure rod is connected with the sleeve through threads; the hollow compression bar is in a hollow ladder shape, the hollow compression bar is abutted against the supporting plate, the upper end of the hollow compression bar is a conical body, and the upper end of the hollow compression bar penetrates through the space between the supporting plate and the plugging plate and is in threaded connection with the supporting plate and the plugging plate.

Furthermore, sealing gaskets are respectively arranged at the joint of the hollow pressure rod and the supporting plate, the joint of the hollow pressure rod and the short pressure rod and the joint of the hollow pressure rod and the grouting pipe.

Furthermore, the plugging plate is attached to the supporting plate, the plugging plate is of a plate-shaped structure made of an elastically deformable pressure-resistant composite material, the plugging plate comprises a plate body and strip bodies arranged at the edges of the periphery of the plate body in a surrounding mode, the strip bodies protrude out of the plate body, and grooves are formed between the strip bodies and the plate body to form the plugging cavity; the strip body is arranged around the periphery of the leakage channel, and the upper plane of the strip body is in a fold shape and is tightly attached to the inner wall of the upper tube sheet.

Furthermore, the area of the plugging plate is smaller than that of the supporting plate, a plurality of bolt holes are formed in the supporting plate at intervals on the four sides of the plugging plate, and expansion bolts are arranged between the bolt holes and the upper pipe sheet to be connected.

Through the technical scheme, the utility model has the beneficial effects that:

the pipe piece jacking device is reasonable in structural design, the arranged base can be well attached to the lower pipe piece, and the stability of jacking equipment operation is guaranteed. The long pressure rod is formed by connecting the short pressure rods through threads, so that the long pressure rod is convenient to disassemble and assemble and can be matched with underwater pipe galleries with different diameters. Jacking equipment cooperates long depression bar to support the fagging, and then makes the shutoff board closely laminate in leakage passageway week side, carries out effective shutoff to it.

When the plugging device is used for plugging construction, the plugging plate is supported by matching jacking equipment with the long pressure rod, so that a leakage channel can be temporarily plugged, and meanwhile, the upper plane of the strip body on the plugging plate is in a corrugated shape, so that a gas leakage path can be increased, gas leakage is prevented, and the plugging effect is good.

Expansion bolts connects fagging and last section of jurisdiction, communicates in proper order through slip casting pipe, hollow depression bar, shutoff chamber and seepage passageway simultaneously, and accessible slip casting pipe is to the inside and outside slip casting of seepage passageway, and the thick liquid gas tightness is better, can react the inflation fast, and then can carry out permanent shutoff to the seepage passageway, and the shutoff construction is convenient, and the shutoff structure is firm, and the construction security is high, can be effectively to the quick emergent punishment of piping lane gas leakage.

Drawings

Fig. 1 is a schematic overall structure diagram of the pressurized quick permanent plugging device for gas leakage of an underwater pipe gallery.

Fig. 2 is a schematic view of the device for rapidly and permanently blocking gas leakage from an underwater pipe gallery in the direction of a line A in fig. 1.

Fig. 3 is a cross-sectional view of the closure plate of fig. 2 of the pressurized rapid permanent closure device for gas leakage in an underwater pipeline corridor according to the present invention.

Fig. 4 is a top view of the installation of the plugging plate and bracing plate of the pressurized quick permanent plugging device for gas leakage of an underwater pipe gallery of the present invention.

Fig. 5 is a schematic view of the connection of the hollow compression bar and the grouting pipe of the pressurized quick permanent plugging device for gas leakage of the underwater pipe gallery.

Fig. 6 is a graph of the grouting effect inside and outside the leakage channel of the pressurized rapid permanent plugging device for gas leakage of the underwater pipe gallery.

Fig. 7 is a schematic view of the installation of the first stabilizing ring and the first reinforcing plate of the quick and permanent blocking device with pressure for gas leakage of the underwater pipe gallery of the utility model.

Fig. 8 is a schematic view of the installation of the second stabilizing ring and the second reinforcing plate of the pressurized quick permanent plugging device for gas leakage of the underwater pipe gallery.

The reference numbers in the drawings are as follows: 1 is the piping lane under water, 2 is the seepage passageway, 3 is the base, 31 is the bedplate, 32 is the extension board, 4 is jacking equipment, 5 is the sleeve, 6 is long depression bar, 7 is short depression bar, 8 is hollow depression bar, 9 is the slip casting pipe, 10 is the check valve, 11 is the valve, 12 is the manometer, 13 is the fagging, 14 is the closure plate, 141 is the plate body, 142 is the bar body, 15 is the shutoff chamber, 16 is the top tube sheet, 17 is lower section of jurisdiction, 18 is sealed pad, 19 is firm ring one, 20 is reinforcing plate one, 21 is firm ring two, 22 is reinforcing plate two, 23 is the bolt hole, 24 is the expansion bolts, 25 is the thick liquid.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings in which:

as shown in figures 1-8, a quick permanent plugging device is pressed in area for gaseous leakage of piping lane under water, including the ring form piping lane 1 under water and seepage passageway 2 that a plurality of shield constructs the section of jurisdiction concatenation and forms, shield constructs section of jurisdiction seam punishment cloth seepage passageway 2, lay base 3 in 2 diagonal positions of seepage passageway 1 under water.

In this embodiment, the shield segment in the position of the leakage passage 2 is an upper segment 16, the shield segment in the position of the base 3 is a lower segment 17, and the connecting line between the upper segment 16 and the lower segment 17 passes through the center of the underwater pipe gallery 1.

The base 3 is tightly propped against the lower pipe piece 17, the base 3 comprises a seat plate 31 and support plates 32 arranged on two sides of the seat plate 31, the seat plate 31 is flat, and the support plates 32 are welded below the seat plate 31. The support plates 32 on the two sides are arranged in a splayed shape, the bottom surfaces of the support plates 32 are arc-shaped surfaces, and the support plates 32 are abutted against the lower duct piece 17 and attached to the lower duct piece 17, so that the stability of the state that the base 3 is attached to the lower duct piece 17 is ensured.

Be provided with jacking equipment 4 on the base 3, jacking equipment 4 when the installation, bedplate 31 and 4 bolted connection of jacking equipment to be connected base 3 and jacking equipment 4 fixedly. Can make jacking equipment 4 effectively adapt to the annular inner wall of lower section of jurisdiction 17 through base 3, increase simultaneously and lower section of jurisdiction 17's area of contact, stability when guaranteeing jacking equipment 4 operation, jacking equipment 4 takes place to rock when avoiding the operation.

In this embodiment, jacking equipment 4 is used for jack-up and support, jacking equipment 4 is the jack, be provided with sleeve 5 on jacking equipment 4, lay on the piston rod of jack sleeve 5 promptly, can realize the lift of sleeve 5 through jacking equipment 4.

The sleeve 5 is in threaded connection with a long pressure rod 6, and then lifting of the long pressure rod 6 can be achieved through the jacking equipment 4. Long depression bar 6 is the straight rod-like that many short depression bars 7 splice formed, and short depression bar 7 is solid construction, and long depression bar 6 is through the short depression bar 7 and the sleeve 5 threaded connection of its bottom, and long depression bar 6 passes 1 center of piping lane under water with the sleeve 5 back of being connected.

In order to facilitate the convenient long depression bar 6 of assembling certain length in piping lane 1 under water, many the screw thread connects gradually between the short depression bar 7, and the mode that many short depression bars 7 pass through the screw thread concatenation realizes swift equipment promptly, and every short depression bar 7 length is 0.5~1m, and the mode through threaded connection lengthens, can match the piping lane 1 under water of different diameters.

The short compression bar 7 at the top end of the long compression bar 6 is a hollow compression bar 8, namely, the short compression bar 7 at the topmost end of the long compression bar 6 is of a hollow structure, the hollow compression bar 8 is in threaded connection with the adjacent short compression bar 7, and a sealing gasket 18 is arranged at the joint of the hollow compression bar 8 and the short compression bar 7.

The hollow compression bar 8 is in a hollow ladder shape, the upper end of the hollow compression bar 8 is a conical body, and the lower end of the hollow compression bar 8 is a cylinder. The hollow compression bar 8 is radially communicated with a grouting pipe 9, the grouting pipe 9 is in threaded connection with the lower end of the hollow compression bar 8, the hollow compression bar 8 and the grouting pipe 9 are installed and fixed, and a sealing gasket 18 is arranged at the joint of the hollow compression bar 8 and the grouting pipe 9. The grouting pipe 9 is sequentially provided with a check valve 10, a valve 11 and a pressure gauge 12.

The upper end of the hollow compression bar 8 is in threaded connection with an arc-shaped supporting plate 13 and a flexible plugging plate 14, namely the upper end of the hollow compression bar 8 is arranged between the supporting plate 13 and the plugging plate 14 in a penetrating way and is in threaded connection with the same. The hollow compression bar 8 is propped against the supporting plate 13, and a sealing gasket 18 is arranged at the joint of the hollow compression bar 8 and the supporting plate 13. The supporting plate 13 is in an arc plate shape made of steel plates, and the bending radian of the supporting plate 13 is the same as that of the upper pipe piece 16.

The upper part of the supporting plate 13 is bonded with the plugging plate 14, and particularly, the supporting plate 13 is bonded with the plugging plate 14 through an epoxy resin adhesive to ensure the connection and fastening of the supporting plate and the plugging plate. The plugging plate 14 is a plate-shaped structure made of a flexible and elastically deformable pressure-resistant composite rubber material, and the plugging plate 14 is attached to the supporting plate 13. The plugging plate 14 has the characteristics of good air tightness, compression deformation under pressure and good flexibility, and can be well attached to the upper pipe sheet 16.

In this embodiment, the cross-section of the plugging plate 14 is in the shape of a ']', the plugging plate 14 covers the periphery of the leakage channel 2 to plug, the plugging plate 14 is tightly attached to the inner wall of the underwater pipe gallery 1, a plugging cavity 15 is formed between the plugging plate 14 and the inner wall of the underwater pipe gallery 1, and the plugging cavity 15 is correspondingly communicated with the leakage channel 2.

Specifically, the blocking plate 14 includes a plate body 141 and a strip body 142 surrounding the peripheral edge of the plate body 141, the strip body 142 protrudes out of the plate body 141, and the strip body 142 surrounds the peripheral side of the leakage channel 2. To avoid high pressure gas leakage, the upper plane of the strip 142 is corrugated and closely contacts the inner wall of the upper tube 16. Grooves are formed between the strip body 142 and the plate body 141 to form the blocking cavity 15, high-pressure gas is blocked by the blocking plate 14 and does not leak, and the leakage channel 2 is blocked.

The folds of the upper plane of the strip body 142 are continuous semicircular bulges, and a plurality of isolations are formed by the folds of the upper plane of the strip body 142, so that a gas leakage path is increased, and the joint tightness of the strip body 142 and the upper duct piece 16 is ensured.

The jacking equipment 4 supports the plugging plate 14 through the long pressure rod 6, and then plugging is carried out on the leakage channel 2. In order to improve the stability of supporting the plugging plate 14, the supporting plate 13 is connected with the underwater pipe gallery 1 through bolts on the periphery side.

Specifically, the area of the plugging plate 14 is smaller than that of the supporting plate 13, a plurality of bolt holes 23 are formed in the supporting plate 13 at intervals on the four sides of the plugging plate 14, and expansion bolts 24 are arranged between the bolt holes 23 and the upper pipe piece 16 to be connected, so that the close attachment of the plugging plate 14 and the upper pipe piece 16 is ensured.

Can keep somewhere fagging 13 and closure plate 14 through expansion bolts 24 simultaneously and fix at last section of jurisdiction 16 inner wall, form permanent shutoff to seepage passageway 2, this block structure is small and exquisite, just buckles along 1 arc of pipe gallery under water, hugs closely 1 inner wall of pipe gallery under water, does not influence the normal operation of pipe gallery.

In this embodiment, the top end of the hollow compression bar 8 sequentially penetrates through the supporting plate 13 and the plugging plate 14 to extend into the plugging cavity 15, so that the grouting pipe 9, the hollow compression bar 8, the plugging cavity 15 and the leakage channel 2 are sequentially communicated, and grouting can be performed in the leakage channel 2 through the grouting pipe 9, so that permanent plugging is realized.

In order to optimize the product structure and ensure the stability of the supporting plate 13 supported by the hollow compression bar 8, two groups of stabilizing rings I19 with cross sections in the shape of ']' are coaxially arranged on the hollow compression bar 8, the sealing gasket 18 is arranged in the stabilizing rings I19, and the thickness of the sealing gasket 18 is larger than that of the stabilizing rings I19.

A set of firm ring 19 supports on fagging 13, and then has increased the area of contact of hollow depression bar 8 with fagging 13, guarantees the good support to fagging 13, can sticis sealed 18 through firm ring 19, and sealed 18 takes place to warp, closely laminates fagging 13 and guarantees the leakproofness that hollow depression bar 8 and fagging 13 are connected. The other group of the stabilizing rings I19 is arranged at the bottom end of the hollow compression bar 8. Still the hoop all is equipped with a plurality of reinforcing plates one 20 between firm ring one 19 and hollow compression bar 8, and reinforcing plates one 20 plays the effect of connecting firm ring one 19 and hollow compression bar 8, guarantees both joint strength.

In order to improve the connection stability of the short pressure rods 7, two ends of each short pressure rod 7 are coaxially provided with a second stabilizing ring 21, and the second stabilizing rings 21 of two adjacent short pressure rods 7 are tightly attached to each other, so that the contact area of the two adjacent short pressure rods 7 is enlarged, and the support stability of the long pressure rod 6 is also ensured.

And a plurality of second reinforcing plates 22 are arranged between the second stabilizing ring 21 and the short compression bar 7 in the circumferential direction, the second reinforcing plates 22 have the same structure as the first reinforcing plates 20, and the second reinforcing plates 22 can improve the connection strength of the second stabilizing ring 21 and the short compression bar 7. When the hollow compression bar 8 is in threaded connection with one of the short compression bars 7, the second stabilizing ring 21 is tightly abutted against the first stabilizing ring 19, and the stability of connection between the hollow compression bar 8 and the first stabilizing ring is also ensured.

When the rapid permanent plugging device with pressure is used for plugging construction, the construction steps are as follows:

step 1: the inside exhaust system of 1 inside exhaust system of pipe gallery under water starts rapidly, carries out the pump drainage to the gas that has leaked in 1 of pipe gallery under water. And cleaning the inner wall of the upper pipe sheet 16 near the leakage channel 2 during pumping, removing floating slurry and oil stains, and wiping clean.

Step 2: the plugging plate 14 and the supporting plate 13 which are matched with each other are manufactured according to the size of the leakage channel 2, so that the plugging plate 14 can cover the leakage channel 2 and can be bonded and fastened with the manufactured plugging plate 14 and the supporting plate 13. And assembling long pressure rods 6 with corresponding lengths according to the diameter of the underwater pipe gallery 1, and placing the base 3 together with the jacking equipment 4 on the lower pipe sheet 17 at the diagonal position of the leakage channel 2.

And step 3: connecting a hollow compression bar 8 with a supporting plate 13 and a plugging plate 14, connecting the hollow compression bar 8 with a grouting pipe 9, and monitoring the pressure of leaked gas by a pressure gauge 12 to guide the pressure used in grouting; the check valve 10 can only be used for injecting the slurry 25 and can also be used for preventing gas from leaking from the slurry injection pipe 9; the valve 11 is used for controlling the on-off of the grouting pipe 9.

The manpower is through fagging 13 with shutoff board 14 cover on seepage passageway 2, connects hollow depression bar 8 and sleeve 5 with long depression bar 6 again, uses jacking equipment 4 to exert pressure to shutoff board 14 and make its compressive deformation, closely laminate upper tube piece 16 inner wall, the leakage of separation high-pressure gas. Meanwhile, the base 3 is used as a counter-force support to tightly abut against the inner wall of the lower segment 17, and can be used as a temporary plugging measure to rapidly plug gas leakage.

And 4, step 4: the leaked gas is continuously pumped out. And drilling holes on the upper pipe sheet 16 at the positions corresponding to the bolt holes 23, fixing the supporting plates 13 on the upper pipe sheet 16 by using expansion bolts 24, and then communicating the supporting plates with the grouting pipes 9 by using grouting equipment. And determining gas leakage pressure according to the reading of the pressure gauge 12, further adjusting grouting pressure to enable the grouting pressure to be more than 1 time greater than the leakage pressure, and then opening the valve 11 to inject grout 25 into the leakage channel 2 for plugging through grouting equipment.

The grout 25 is made of high polymer grouting material and has the characteristics of good air tightness and rapid response expansion. The slurry 25 is diffused to the plugging cavity 15, the interior of the leakage channel 2 and the junction of the outer wall of the upper pipe sheet 16 and the soil body under the action of pressure, so that permanent plugging is realized.

And 5: and (3) stopping grouting when the pressure gauge 12 does not have a reading any more, namely completing plugging, and finally removing the hollow compression bar 8, the long compression bar 6 and the jacking equipment 4. At the moment, the slurry 25 is placed inside and outside the leakage channel 2, the supporting plate 13 and the plugging plate 14 are left on the inner wall of the upper pipe piece 16, and the slurry can be used as a permanent plugging measure, and high-pressure gas can not impact the plugging plate 14 any more and can permanently plug gas leakage.

The plugging plate 14 of the utility model covers the leakage channel 2, thereby performing targeted sealing on the leakage channel 2, and simultaneously, the air leakage path is increased by the plane wrinkles on the strip body 142, thereby effectively cutting off the air. When seepage passageway 2 was restoreed, earlier support long depression bar 6 through jacking equipment 4 and clamping bar piece and carry out interim shutoff to seepage passageway 2, and then can be to the quick emergent punishment of piping lane gas leakage under water, the construction is quick, the security is high. The plugging plate 14 can be permanently fixed on the inner wall of the upper segment 16 by using the expansion bolts 24, and meanwhile, the inside and the outside of the leakage channel 2 are grouted, so that the plugging plate 14 is prevented from being impacted by gas, the stability and firmness of the plugging structure are ensured, and the permanent plugging effect is realized.

The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.

Claims (7)

1. The pressurized rapid permanent plugging device for gas leakage of the underwater pipe gallery comprises a circular underwater pipe gallery (1) and a leakage channel (2) which are formed by splicing a plurality of shield segments, wherein the leakage channel (2) is distributed at the joint of the shield segments, and is characterized in that a base (3) is distributed in the underwater pipe gallery (1) at the diagonal position of the leakage channel (2);

the underwater pipe gallery is characterized in that jacking equipment (4) is arranged on the base (3), a sleeve (5) is arranged on the jacking equipment (4), a long compression bar (6) is connected to the sleeve (5) in a threaded manner, the long compression bar (6) is in a straight rod shape formed by splicing a plurality of short compression bars (7), and the long compression bar (6) penetrates through the center of the underwater pipe gallery (1);

the short pressure rod (7) at the top end of the long pressure rod (6) is a hollow pressure rod (8), the hollow pressure rod (8) is radially communicated with a grouting pipe (9), and a one-way valve (10), a valve (11) and a pressure gauge (12) are sequentially arranged on the grouting pipe (9);

the upper end of the hollow compression bar (8) is in threaded connection with an arc-shaped supporting plate (13) and a flexible plugging plate (14), the plugging plate (14) is bonded above the supporting plate (13), the cross section of the plugging plate (14) is shaped like a Chinese character 'ji', the plugging plate (14) is covered on the periphery of the leakage channel (2) for plugging, the plugging plate (14) is tightly attached to the inner wall of the underwater pipe gallery (1), a plugging cavity (15) is formed between the plugging plate (14) and the inner wall of the underwater pipe gallery (1), and the plugging cavity (15) is correspondingly communicated with the leakage channel (2);

the top end of the hollow compression bar (8) sequentially penetrates through the supporting plate (13) and the plugging plate (14) to extend into the plugging cavity (15) to be communicated; the periphery of the supporting plate (13) is connected with the underwater pipe gallery (1) through bolts.

2. The pressurized quick and permanent plugging device according to claim 1, wherein the shield segment at the position of the leakage passage (2) is an upper segment (16), the shield segment at the position of the base (3) is a lower segment (17), and a connecting line between the upper segment (16) and the lower segment (17) passes through the center of the underwater pipe gallery (1).

3. The pressurized quick permanent plugging device according to claim 2, wherein the base (3) is pressed against the lower segment (17), the base (3) comprises a seat plate (31) and support plates (32) arranged on two sides of the seat plate (31), the seat plate (31) is in bolted connection with the jacking equipment (4), the jacking equipment (4) is a jack, and the sleeve (5) is arranged on a piston rod of the jacking equipment (4);

the support plates (32) on the two sides are arranged in a splayed shape, and the support plates (32) are abutted against the lower pipe piece (17) and attached to the lower pipe piece (17).

4. The pressurized quick permanent plugging device according to claim 1, characterized in that a plurality of short pressure rods (7) are sequentially connected through threads, and the short pressure rod (7) at the bottom end of the long pressure rod (6) is connected with a sleeve (5) through threads;

the hollow compression bar (8) is hollow and stepped, the hollow compression bar (8) is abutted to the supporting plate (13), the upper end of the hollow compression bar (8) is a conical body, and the upper end of the hollow compression bar (8) penetrates through the space between the supporting plate (13) and the plugging plate (14) and is in threaded connection with the supporting plate and the plugging plate.

5. The pressurized quick permanent plugging device according to claim 1, characterized in that the joints of the hollow pressure rod (8) and the supporting plate (13), the joints of the hollow pressure rod (8) and the short pressure rod (7) and the joints of the hollow pressure rod (8) and the grouting pipe (9) are respectively provided with a sealing gasket (18).

6. The pressurized quick and permanent plugging device according to claim 2, wherein the plugging plate (14) is attached to the supporting plate (13), the plugging plate (14) is a plate-shaped structure made of an elastically deformable pressure-resistant composite material, the plugging plate (14) comprises a plate body (141) and a strip body (142) arranged around the peripheral edge of the plate body (141), the strip body (142) protrudes out of the plate body (141), and a groove is formed between the strip body (142) and the plate body (141) to form the plugging cavity (15);

the strip body (142) is arranged around the periphery of the leakage channel (2), and the upper plane of the strip body (142) is in a corrugated shape and is tightly attached to the inner wall of the upper pipe piece (16).

7. The pressurized quick permanent plugging device according to claim 6, wherein the area of the plugging plate (14) is smaller than that of the supporting plate (13), a plurality of bolt holes (23) are arranged on the supporting plate (13) on the four peripheral sides of the plugging plate (14) at intervals, and expansion bolts (24) are arranged between the bolt holes (23) and the upper segment (16) for connection.

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