CN217400899U

CN217400899U - Continuous pipe extension device

Info

Publication number: CN217400899U
Application number: CN202221274444.0U
Authority: CN
Inventors: 万坤; 王舒菲; 方园; 范宗华; 李嘉伟
Original assignee: Tianhe Mechanical Equipment Manufacturing Co Ltd
Current assignee: Tianhe Mechanical Equipment Manufacturing Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-09-09
Anticipated expiration: 2032-05-25

Abstract

The utility model provides a continuous type pipe extension device, including the three-way pipe, flexible pipe and connecting pipe, the first oral area of three-way pipe is used for inputing mud, second oral area is linked together with the mud discharge pipe, the first break-make mechanism of third oral area connection, extend along the direction that is on a parallel with the mud discharge pipe through making flexible pipe, make flexible pipe tip and first oral area intercommunication, another tip and connecting pipe middle part intercommunication, a termination of messenger's connecting pipe is on the branch mouth gate valve of mud discharge pipe, another tip sets up the second break-make mechanism at the connecting pipe, can pass through the cooperation of first and second break-make mechanism, make mud carry on the route through or not through second oral area, when it does not pass through second oral area, can separate second oral area and mud discharge pipe, and the cooperation is flexible pipe extension realized the takeover operation, need not frequently to open and stop, be difficult for causing equipment trouble, Can be tunneled synchronously in the pipe extending process, has high construction efficiency, can avoid slurry leakage and is convenient to operate.

Description

Continuous pipe extension device

Technical Field

The utility model belongs to the technical field of shield constructs mud and carries, concretely relates to continuous type pipe extends device.

Background

Along with the rapid development of cities, more and more cross-river and cross-sea tunnels are built, the slurry shield machine has the advantages that the excavation surface can be stabilized in the stratum where quicksand easily occurs, construction operation can be carried out under normal atmospheric pressure, the slurry pressure transmission speed is high and uniform, the control precision of the equilibrium soil pressure of the excavation surface is high, the interference to the soil body around the excavation surface is less, the control precision of the ground settlement amount is high, shield unearthed soil is conveyed by a slurry pipeline, the speed is high and continuous, the transportation amount of an electric locomotive is reduced, the construction progress is fast, the abrasion of a cutter and the cutter is small, the long-distance shield construction is easy, the torque borne by the cutter is small, the slurry shield machine is more suitable for the construction of large-diameter tunnels, and the slurry shield machine is widely applied to the construction of the tunnels.

During tunneling, the slurry shield machine needs to convey slurry through a pipeline, and the pipeline needs to be extended every time the slurry shield machine tunnels for a certain distance so as to ensure normal conveying of the slurry, common pipe extension is mostly operated in a mode of stopping operation → disconnecting the pipeline → extending the pipeline → restarting, and during use, the shield machine needs to be started and stopped frequently, so that equipment failure is caused easily, and during pipe extension, tunneling is in a stagnation state, so that the construction efficiency is low, and during pipeline disconnection, the problem of slurry leakage is solved, and the operation is inconvenient.

Disclosure of Invention

The utility model aims at overcoming prior art's shortcoming, provide one kind and need not frequently to open and stop, be difficult for causing equipment trouble, can be at pipe extension in-process synchronous tunnelling, the efficiency of construction is high, can avoid mud to leak, convenient operation's continuous type pipe extension device.

In order to achieve the above object, the present invention adopts the technical solution that the extension device of the continuous pipe comprises:

the three-way pipe comprises a three-way pipe, a first pipe orifice of the three-way pipe is used for inputting slurry, a second pipe orifice of the three-way pipe is communicated with a slurry discharge pipe, and a third pipe orifice of the three-way pipe is connected with a first on-off mechanism which is used for controlling the on-off of the first pipe orifice and the second pipe orifice and the on-off of the second pipe orifice and the slurry discharge pipe;

the continuous pipe extending device further comprises a telescopic pipe and a connecting pipe, the telescopic pipe extends in a direction parallel to the slurry discharge pipe, one end of the telescopic pipe is communicated with the first pipe opening, the other end of the telescopic pipe is communicated with the middle of the connecting pipe, one end of the connecting pipe is connected to a branch opening gate valve of the slurry discharge pipe, and the other end of the connecting pipe is provided with a second on-off mechanism for controlling the on-off of the telescopic pipe and the connecting pipe;

the continuous pipe extension device has a first tunneling state and a second tunneling state, when the continuous pipe extension device is in the first tunneling state, the first on-off mechanism is switched on, the second on-off mechanism is switched off, slurry is conveyed along the path of the first pipe opening → the second pipe opening → the slurry discharge pipe, when the continuous pipe extension device is in the second tunneling state, the second on-off mechanism is switched on, the first on-off mechanism is switched off, and the slurry is conveyed along the path of the first pipe opening → the telescopic pipe → the connecting pipe → the branch opening gate valve → the slurry discharge pipe, so that the second pipe opening is separated from the slurry discharge pipe, and the extension of the telescopic pipe is matched to realize the pipe connection operation.

Preferably, the telescopic pipe comprises a first inner pipe and a first outer pipe sleeved on the first inner pipe in an axially sliding manner, the first inner pipe is communicated with the first pipe opening, the first outer pipe is communicated with the middle part of the connecting pipe, and a first sealing element is arranged between the first inner pipe and the first outer pipe.

Further preferably, a gate valve is provided between the first inner tube and the first nozzle portion.

Further preferably, a support plate is connected to an outer wall of the first outer tube, and the support plate is slidably supported on a guide rail located below the first outer tube through a roller.

Preferably, the connecting tube extends in a direction parallel to the first nozzle portion.

Preferably, the second disconnecting mechanism comprises a plugging piece which can be axially slidably arranged in the connecting pipe in a penetrating manner and an ejector rod used for driving the plugging piece to slide, and when the second disconnecting mechanism is disconnected, the plugging piece plugs the communication port of the telescopic pipe and the connecting pipe and/or the opening of one side, away from the mud discharge pipe, of the branch port gate valve.

Further preferably, the push rod is slidably inserted into an end closing plate of the connecting pipe, and an end of the push rod extends into the connecting pipe and is connected with the blocking piece.

Preferably, the first on-off mechanism includes a second outer tube, a second inner tube, a second sealing element, a blocking ball, an end cover, and a hydraulic cylinder, the second outer tube is connected to the third pipe orifice, the second inner tube is axially slidably inserted into the second outer tube, the second sealing element is disposed between the second inner tube and the second outer tube, the blocking ball can be separated from the second inner tube under the action of pressure and squeezed into the slurry discharge pipe along the second pipe orifice, or separated from the slurry discharge pipe and retracted into the second inner tube along the second pipe orifice, the end cover is located outside the second outer tube and connected to the end of the second inner tube, an adjusting hole for adjusting the pressure applied to the blocking ball is formed in the end cover, and the hydraulic cylinder is used for driving the second inner tube to slide.

Further preferably, the inner diameter of the second inner pipe is equal to the inner diameter of the mud drainage pipe.

Preferably, the tee is a T-shaped tee, and the first pipe orifice is perpendicular to the second pipe orifice and the third pipe orifice.

Because of the application of the technical scheme, compared with the prior art, the utility model has the advantages of it is following:

the utility model provides a continuous type pipe extension device, including the three-way pipe, flexible pipe and connecting pipe, the first mouth of pipe portion of three-way pipe is used for inputing mud, second mouth of pipe portion is linked together with the mud discharge pipe, the third mouth of pipe portion is connected with control first, the first break-make mechanism of two mouth of pipe portion break-make and second mouth of pipe portion and mud discharge pipe break-make, extend through the direction that makes the flexible pipe follow the mud discharge pipe, make a tip and first mouth of pipe portion intercommunication of flexible pipe, another tip communicates with the middle part of connecting pipe, make a tip of connecting pipe connect on the branch mouth gate valve of mud discharge pipe, set up the second break-make mechanism of controlling flexible pipe and connecting pipe break-make at another tip of connecting pipe, can pass through the cooperation of first and second break-make mechanism, make mud carry along the route of first mouth of pipe portion → second mouth of pipe portion → mud discharge pipe, or, along input tube → first mouth of pipe portion → connecting pipe → flexible pipe → branch mouth of flexible pipe → gate valve → mud discharge pipe → second way of mud discharge pipe The pipe conveying device has the advantages that the pipe conveying device can be used for conveying the slurry in the radial direction, the second pipe opening part and the slurry discharge pipe can be separated when the slurry does not pass through the second pipe opening part, the pipe connecting operation is realized by matching with the extension of the telescopic pipe, frequent starting and stopping are not needed, equipment faults are not easy to cause, the synchronous tunneling can be realized in the pipe extending process, the construction efficiency is high, the slurry leakage can be avoided, and the operation is convenient.

Drawings

Fig. 1 is a schematic structural diagram of the preferred embodiment of the present invention in the first tunneling state before the pipe connection.

Fig. 2 and 3 are schematic structural diagrams of fig. 1 in a second tunneling state, and show a pipe connecting process.

Fig. 4 and 5 are schematic structural diagrams of fig. 1 in a first tunneling state after the pipe connection, and show a resetting process.

Fig. 6 is a schematic structural view of the first outer tube connecting support plate of fig. 1.

FIG. 7 is a schematic view of the tee in FIG. 1 at the third pipe orifice, with the first on-off mechanism in the on state.

Wherein: 1. a slurry discharge pipe; 2. a branch gate valve; 10. a three-way pipe; 11. a first pipe orifice; 12. a second pipe orifice; 13. a third pipe orifice; 14. a first on-off mechanism; 141. a second outer tube; 142. a second inner tube; 143. a second seal member; 144. an occlusion ball; 145. an end cap; 146. a hydraulic cylinder; 20. a telescopic pipe; 21. a first inner tube; 211. a gate valve; 22. a first outer tube; 221. a support plate; 222. a roller; 223. a guide rail; 23. a first seal member; 30. a connecting pipe; 31. a second on-off mechanism; 311. a blocking piece; 312. a top rod; 32. and end portions are closed.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.

As shown in fig. 1 to 7, the present invention provides a continuous pipe extension apparatus, comprising: the three-way pipe comprises a three-way pipe 10, a telescopic pipe 20 and a connecting pipe 30, wherein a first pipe orifice part 11 of the three-way pipe 10 is used for inputting slurry, a second pipe orifice part 12 of the three-way pipe 10 is communicated with a slurry discharge pipe 1, a third pipe orifice part 13 of the three-way pipe 10 is connected with a first on-off mechanism 14, and the first on-off mechanism 14 is used for controlling the on-off of the first pipe orifice part 11 and the second pipe orifice part 12 and the on-off of the second pipe orifice part 12 and the slurry discharge pipe 1; the telescopic pipe 20 extends along the direction parallel to the slurry discharge pipe 1, one end part of the telescopic pipe 20 is communicated with the first pipe orifice part 11, the other end part of the telescopic pipe 20 is communicated with the middle part of the connecting pipe 30, one end part of the connecting pipe 30 is connected to the branch port gate valve 2 of the slurry discharge pipe 1, and the other end part of the connecting pipe 30 is provided with a second on-off mechanism 31 for controlling the on-off of the telescopic pipe 20 and the connecting pipe 30; the continuous pipe extending apparatus has a first tunneling state in which the first opening/closing mechanism 14 is turned on and the second opening/closing mechanism 31 is turned off, and a second tunneling state in which slurry is transported along a path of the first throat portion 11 → the second throat portion 12 → the slurry discharge pipe 1; when the second boring machine is in the second boring state, the second opening/closing mechanism 31 is turned on and the first opening/closing mechanism 14 is turned off, and the slurry is conveyed along the path of the first nozzle portion 11 → the extension tube 20 → the connection tube 30 → the branch port gate valve 2 → the slurry discharge tube 1, and the opening of the slurry discharge tube 1 on the side facing the second nozzle portion 12 is closed, at this time, the second nozzle portion 12 and the slurry discharge tube 1 can be easily separated, and the pipe connection work can be realized in accordance with the extension of the extension tube 20.

The method has the advantages that frequent starting and stopping are not needed, equipment failure is not easily caused, synchronous tunneling can be realized in the pipe extending process, the construction efficiency is high, slurry leakage can be avoided, and the operation is convenient.

In this embodiment, the extension tube 20 includes a first inner tube 21 and a first outer tube 22 axially slidably sleeved on the first inner tube 21, the first inner tube 21 is communicated with the first tube opening 11, the first outer tube 22 is communicated with the middle portion of the connection tube 30, a first sealing member 23 is disposed between the first inner tube 21 and the first outer tube 22, in order to facilitate maintenance and replacement of the extension tube 20 and the connection tube 30, a gate valve 211 is disposed between the first inner tube 21 and the first tube opening 11, in order to facilitate extension and contraction of the extension tube 20 and guiding, a support plate 221 is connected to an outer wall of the first outer tube 22, and the support plate 221 is slidably supported on a guide rail 223 located below the first outer tube 22 through a roller 222.

In this embodiment, the connecting pipe 30 extends in a direction parallel to the first pipe orifice portion 11, the second cut-off mechanism 31 includes a plugging member 311 axially slidably inserted into the connecting pipe 30 and a push rod 312 for driving the plugging member 311 to slide, the push rod 312 slidably inserted into the end sealing plate 32 of the connecting pipe 30, an end of the push rod 312 extends into the connecting pipe 30 and is connected to the plugging member 311, and when the second cut-off mechanism 31 is cut off, the push rod 312 drives the plugging member 311 to slide so as to plug the opening of the side of the branch gate valve 2 away from the slurry discharge pipe 1.

In this embodiment, the first on-off mechanism 14 includes a second outer tube 141, a second inner tube 142, a second sealing element 143, a blocking ball 144, an end cover 145, and a hydraulic cylinder 146, the second outer tube 141 is connected to the third pipe orifice 13, the second inner tube 142 is axially slidably inserted into the second outer tube 141, the second sealing element 143 is disposed between the second inner tube 142 and the second outer tube 141, the blocking ball 144 can be separated from the second inner tube 142 and squeezed into the slurry discharge pipe 1 along the second pipe orifice 12 under the action of pressure, or separated from the slurry discharge pipe 1 and retracted into the second inner tube 142 along the second pipe orifice 12, the end cover 145 is located outside the second outer tube 141 and connected to an end of the second inner tube 142, an adjusting hole for adjusting the pressure applied to the blocking ball 144 is opened on the end cover 145, the hydraulic cylinder 146 is used for driving the second inner tube 142 to slide, in order to facilitate the movement of the blocking ball 144 and realize the blocking effect, the inner diameter of the second inner tube 142 is equal to the inner diameter of the slurry discharge pipe 1, the tee pipe 10 is a T-shaped tee pipe, and the first pipe orifice part 11 is perpendicular to the second pipe orifice part 12 and the third pipe orifice part 13.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A continuous tube extension apparatus, comprising:

the three-way pipe comprises a three-way pipe, a first pipe orifice part of the three-way pipe is used for inputting slurry, a second pipe orifice part of the three-way pipe is communicated with a slurry discharge pipe, a third pipe orifice part of the three-way pipe is connected with a first on-off mechanism, and the first on-off mechanism is used for controlling the on-off of the first pipe orifice part and the second pipe orifice part and the on-off of the second pipe orifice part and the slurry discharge pipe;

the method is characterized in that:

the continuous pipe extension device has a first tunneling state and a second tunneling state, when the continuous pipe extension device is in the first tunneling state, the first on-off mechanism is connected and the second on-off mechanism is disconnected, slurry is conveyed along the path of the first pipe opening → the second pipe opening → the slurry discharge pipe, when the continuous pipe extension device is in the second tunneling state, the second on-off mechanism is connected and the first on-off mechanism is disconnected, and the slurry is conveyed along the path of the first pipe opening → the telescopic pipe → the connecting pipe → the branch opening gate valve → the slurry discharge pipe, so that the second pipe opening and the slurry discharge pipe are separated, and the pipe connection operation is realized in cooperation with the extension of the telescopic pipe.

2. The continuous tube extension device of claim 1, wherein: the telescopic pipe comprises a first inner pipe and a first outer pipe which is sleeved on the first inner pipe in an axially sliding manner, the first inner pipe is communicated with the first pipe opening part, the first outer pipe is communicated with the middle part of the connecting pipe, and a first sealing element is arranged between the first inner pipe and the first outer pipe.

3. The coiled tubing extension device of claim 2, wherein: and a gate valve is arranged between the first inner pipe and the first pipe orifice part.

4. The continuous tube extension device of claim 2, wherein: the outer wall of the first outer pipe is connected with a supporting plate, and the supporting plate is slidably supported on a guide rail below the first outer pipe through a roller.

5. The coiled tubing extension device of claim 1, wherein: the connecting pipe extends in a direction parallel to the first pipe opening portion.

6. The coiled tubing extension device of claim 1, wherein: the second on-off mechanism comprises a plugging piece which is axially slidably arranged in the connecting pipe in a penetrating mode and an ejector rod used for driving the plugging piece to slide, and when the second on-off mechanism is off, the plugging piece blocks the communicating port of the telescopic pipe and the connecting pipe and/or the opening on one side, away from the slurry discharge pipe, of the branch port gate valve.

7. The continuous tube extension device of claim 6, wherein: the ejector rod is slidably arranged on the end sealing plate of the connecting pipe in a penetrating manner, and the end part of the ejector rod extends into the connecting pipe and is connected with the plugging piece.

8. The continuous tube extension device of claim 1, wherein: the first on-off mechanism comprises a second outer pipe, a second inner pipe, a second sealing element, a blocking ball, an end cover and a hydraulic cylinder, the second outer pipe is connected to a third pipe opening, the second inner pipe is axially slidably arranged in the second outer pipe in a penetrating mode, the second sealing element is arranged between the second inner pipe and the second outer pipe, the blocking ball can be separated from the second inner pipe under the action of pressure and is extruded into the slurry discharge pipe along the second pipe opening, or is separated from the slurry discharge pipe and retracts into the second inner pipe along the second pipe opening, the end cover is located on the outer side of the second outer pipe and is connected to the end portion of the second inner pipe, an adjusting hole used for adjusting the pressure applied to the blocking ball is formed in the end cover, and the hydraulic cylinder is used for driving the second inner pipe to slide.

9. The coiled tubing extension device of claim 8, wherein: the inner diameter of the second inner pipe is equal to the inner diameter of the mud discharging pipe.

10. The coiled tubing extension device of claim 1, wherein: the three-way pipe is a T-shaped three-way pipe, and the first pipe orifice part is perpendicular to the second pipe orifice part and the third pipe orifice part.