CN117662850A - Pipeline extension device and construction method - Google Patents

Abstract

The application discloses a pipeline extension device and a construction method, wherein the pipeline extension device comprises a pipeline extension frame, a lifting assembly and a pipeline clamping assembly; the pipeline extension frame comprises an upright post and a working platform arranged at the top end of the upright post, and a through hole for a pipeline to pass through is formed in the working platform; the lifting assembly comprises a lifting oil cylinder arranged in the upright post, the telescopic end of the lifting oil cylinder is connected with a lifting table, the lifting table slides along the length direction of the upright post, and a sliding rail perpendicular to the upright post is arranged on the lifting table; the pipeline clamping assembly is arranged on the lifting table and comprises two clamps and two clamping oil cylinders, the two clamps are used for clamping the two sides of the circumference of the pipeline, and the clamping oil cylinders drive the clamps to clamp the pipeline. The pipeline extension construction method has the effects of being high in pipeline extension construction precision and high in automation degree.

Description

Pipeline extension device and construction method

Technical Field

The invention relates to the technical field of vertical pipeline construction and design and construction, in particular to a pipeline extension device and a construction method.

Background

After the vertical shaft or inclined shaft excavating equipment is assembled, the pipeline needs to synchronously descend along with the vertical shaft or inclined shaft excavating equipment to realize tunneling, and the prior art usually adopts an underground pipeline extending mode, namely pipeline extending is carried out in the vertical shaft or inclined shaft. For the working condition and working environment of deep well shaft or inclined shaft construction equipment, because the deep well shaft or inclined shaft has large well formation depth, the needed pipeline extension workload is large, the safety requirement on the pipeline extension device is high, the traditional underground pipeline extension method has low efficiency, large personnel operation difficulty, low intelligent degree and difficult installation. Meanwhile, if the personnel is not operated in time, dangerous situations such as pipeline breakage and the like can exist.

The patent with publication number CN115325266A discloses a construction method for rapidly installing a mine shaft pipeline, which comprises the following construction steps of S1: calculating and selecting a system, estimating the total weight accumulated by the lifted pipe and the accessory according to the engineering quantity of the vertical shaft pipeline, and selecting lifting equipment matched with the total weight accumulated by the pipe and the accessory according to the safety coefficient; s2: constructing a bottom operation room, and constructing a protection roof with a protection function at the bottom of the vertical shaft to form a bottom operation room; s3: installing a lifting system, drilling holes in the top of the vertical shaft and driving anchor rods. Through adopting two sets of manual hoists in top, the mid portion sets up the combination between the operation of protection top in bottom area, and on-the-spot simple manufacture, convenient to use, and can dismantle cyclic utilization, simplify the pipeline well pipeline installation operation process greatly, also can shorten construction operation time by a wide margin, this kind of scheme change pipe operation is in the pit, the pipeline need transport to the pit extension to need the operation of in pit cooperation just can realize the operation of changing steps in pit, such construction mode error is great, easily causes the pipeline surplus too lengthy, area is big.

Disclosure of Invention

The invention provides a pipeline extension device and a construction method, which are used for solving the technical problems of large construction error and excessively long pipeline allowance in the conventional pipeline extension.

According to one aspect of the present invention, there is provided a pipe extension apparatus comprising a pipe extension frame, a lifting assembly and a pipe clamping assembly; the pipeline extension frame comprises an upright post and a working platform arranged at the top end of the upright post, and a through hole for a pipeline to pass through is formed in the working platform; the lifting assembly comprises a lifting oil cylinder arranged in the upright post, a lifting table is connected to the telescopic end of the lifting oil cylinder, the lifting table slides along the length direction of the upright post, and a sliding rail perpendicular to the upright post is arranged on the lifting table; the pipeline clamping assembly is arranged on the lifting table and comprises two clamps and two clamping oil cylinders, the two clamps are used for clamping two sides of a pipeline, and the clamping oil cylinders drive the clamps to clamp the pipeline; the lifting oil cylinder is connected with an external hydraulic source to enable the lifting platform to keep a static balance state under the support of the lifting oil cylinder, the lifting platform is kept static under the static balance state, and the static balance state is broken after the lifting platform receives the action of external force exceeding a preset value or gives an ascending and descending instruction, so that the lifting platform moves in a lifting mode.

Optionally, the pipeline clamping assembly still includes two guide bars, guide bar and slide rail parallel arrangement, the both ends of every holder respectively with a guide bar sliding fit, be provided with on the holder with slide rail sliding fit's slider, two be provided with the end cover between the guide bar, the one end and the end cover of centre gripping hydro-cylinder are connected, the other end is connected with the holder.

Optionally, two sides that the holder is close to each other are offered respectively and are cooperated with pipeline's arc recess.

Optionally, a rubber pad is arranged in the arc-shaped groove.

Optionally, the stand includes fixed stand and flexible stand, fixed stand one end is connected with mounting plate, the other end and flexible stand fixed connection, the one end and the work platform fixed connection of fixed stand are kept away from to flexible stand, all be provided with the cavity in fixed stand and the flexible stand, lift cylinder's pole chamber is located the cavity of fixed stand, and flexible cylinder's no pole chamber is located the cavity of flexible stand.

Optionally, a stroke sensor is arranged on the pipeline extension frame, the stroke sensor comprises a fixed end and a movable end, the fixed end of the stroke sensor is fixed on the telescopic upright post, and the movable end of the stroke sensor is fixed on the lifting table.

Optionally, the pipeline extension device further comprises a step ladder, wherein one end of the step ladder is fixed on the bottom surface, and the other end of the step ladder is fixed on the working platform.

According to another aspect of the present invention, there is also provided a pipe extension construction method including the steps of:

s1, enabling a pipeline clamping assembly to clamp an installed vertical hard pipe, and disconnecting the installed vertical hard pipe from a horizontal bent pipe;

s2, lifting the lifting platform through the lifting oil cylinder, and further driving the vertical hard pipe to move upwards until the flange surface at the upper end of the vertical hard pipe is positioned at the upper part of the working platform;

s3, hoisting the extension hard pipe above the working platform, and connecting a flange at the lower end of the extension hard pipe with a flange at the upper end of the vertical hard pipe;

s4, the lifting platform descends through the lifting oil cylinder, and then the vertical hard pipe is driven to move downwards;

s5, connecting the lower end flange surface of the horizontal bent pipe with the upper end flange surface of the extension hard pipe;

s6, tunneling the shaft construction equipment, and regulating back pressure by the lifting oil cylinder through oil return throttling to enable the lifting oil cylinder to follow the shaft construction equipment, so that the pipeline clamping assembly and the clamped pipeline are driven to tunnel downwards along with the shaft construction equipment.

Further, the step of connecting the lower end flange surface of the horizontal elbow with the upper end flange surface of the extension rigid pipe further comprises the following steps:

the pipeline clamping assembly is enabled to loosen the installed vertical hard pipe, the horizontal bent pipe is lifted in a lifting mode, then the vertical pipeline including the extending hard pipe is driven to ascend, and the pipeline is lifted until the position of the lower end flange surface of the extending hard pipe is consistent with that of the upper end flange surface of the original installed vertical hard pipe.

Further, in step S6, when the pipe clamping assembly is driven to the fixed end of the stroke sensor of the pipe extension frame, the stroke sensor feeds back a signal of the pipe to be extended to the control room, and the tunneling equipment is associated to stop tunneling.

In summary, the present application includes at least one of the following beneficial technical effects:

compared with the traditional working process that the hand chain hoist is utilized to reserve the excavation allowance of the vertical shaft and then the construction of the vertical shaft construction equipment is carried out, the technical scheme utilizes the lifting oil cylinder to realize that the extending speed of the pipeline is obviously improved along with the functional efficiency and the speed matching performance of the vertical shaft construction equipment to match the construction speed; the hydraulic pipeline clamping assembly is used for replacing the traditional pipeline clamping mode, so that the process of installing the pipeline clamp and fastening bolts by personnel is reduced, the hydraulic pipeline clamp is easy to operate, the pipeline clamp is not required to be installed, and the time waste caused by pipeline fixing is avoided; the travel sensor replaces the traditional manual observation of the extending travel of the pipeline, improves the accurate control of the extending process of the pipeline, can realize the real-time feedback of the extending in-place and the signal required to be extended, avoids the problems of long pipeline or insufficient extending of the pipeline caused by the manual extending of the pipeline, and improves the accuracy of the extending quantity of the pipeline; compared with the traditional method, the method can obviously improve personnel and time waste in the process of extending and replacing the pipe of the pipeline, obviously reduce the difficulty of pipe replacement, improve the efficiency of pipe replacement and save the time of pipe replacement; the pipeline extension device is not only suitable for the pipeline extension process of shaft well-forming construction, but also can be used for the pipeline extension process of shaft well-forming construction or drilling and blasting construction, and meanwhile, the device has small occupied area, is convenient to install and transport, has no requirement on site construction environment, and has wide applicability to the pipeline extension device of general shaft well construction.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a schematic view of a shaft line extension set according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a pipe extension frame according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of the tubing clamp assembly of the preferred embodiment of the present invention;

FIG. 4 is a schematic view of the construction of a lift cylinder and a column in accordance with a preferred embodiment of the present invention;

FIG. 5 is a schematic view of the oil circuit of the lift cylinder according to the preferred embodiment of the present invention;

fig. 6 is a schematic view of a shaft line extension of a preferred embodiment of the present invention.

Legend description:

1. a pipeline extension frame; 101. a mounting base plate; 102. fixing the upright post; 103. a stroke sensor fixing frame; 104. a travel sensor moving rack; 105. guard bars; 106. a working platform; 107. a slide rail; 108. a telescopic column; 2. a pipeline clamping assembly; 201. a guide rod; 202. a nut; 203. a holder; 204. a slide block; 205. an end cap; 206. a screw; 207. a rubber pad; 208. clamping an oil cylinder; 23 shaft construction equipment; 24 compensating hose; 25 vertical stiffening pipes; 26 extending the hard tube; 27. a hoist is transported; 28. a horizontal elbow; 29. lifting the hoist; 30. extending the hose; 3. a stroke sensor; 4. a step ladder; 51. an oil tank; 52. a hydraulic pump; 53. a ball valve; 54. a pressure reducing valve; 55. a reversing valve; 56. a hydraulic lock; 57. a one-way speed regulating valve; 58. measuring a pressure head; 6. and (5) lifting the oil cylinder.

Detailed Description

Embodiments of the invention are described in detail below with reference to the attached drawing figures, but the invention can be practiced in a number of different ways, as defined and covered below.

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a pipeline extension device and a construction method.

Referring to fig. 1 and 2, a pipe extension device includes a pipe extension frame 1, a lifting assembly, and a pipe clamping assembly 2; the pipeline extension frame 1 comprises a stand column and a working platform 106 arranged at the top end of the stand column, and a through hole for a pipeline to pass through is formed in the working platform 106; the lifting assembly comprises a lifting oil cylinder 6 arranged in the upright post, a lifting table is connected to the telescopic end of the lifting oil cylinder 6, the lifting table slides along the length direction of the upright post, and a sliding rail 107 perpendicular to the upright post is arranged on the lifting table; the pipeline clamping assembly 2 is arranged on the lifting table, the pipeline clamping assembly 2 comprises two clamping devices 203 and two clamping oil cylinders 208, the two clamping devices 203 are used for clamping two sides of a pipeline, and the clamping oil cylinders 208 drive the clamping devices 203 to slide along the sliding rails 107.

In this embodiment, the pipeline extension frame 1 is placed on the ground where vertical pipeline extension is required, and is a core supporting component of the pipeline extension device, and the upright column is used for supporting the working platform 106, where the working platform 106 provides a standing platform for constructors to ascend a height and extend a pipeline, and meanwhile, the lifting oil cylinder 6 can be contained in the upright column, so as to protect the lifting oil cylinder 6, and avoid damage caused by collision of the lifting oil cylinder 6 with other equipment on a construction site in the construction process; the pipeline clamping assembly 2 can be driven to vertically move along the pipeline extension frame 1 through the telescopic action of the lifting oil cylinder 6, the pipeline is clamped by the pipeline clamping assembly 2, and the vertical pipeline moves up and down through the action of the lifting oil cylinder 6; the pipeline clamping assembly 2 can move left and right in the sliding rail 107, the pipeline clamping assembly 2 is limited left and right by utilizing the upright post of the pipeline extension frame 1, and meanwhile, the pipeline clamping assembly 2 can move up and down along with the lifting platform. The pipeline clamping assembly 2 can move in 4 directions in the pipeline extension frame 1, so that the extension pipeline can be adjusted along with the well forming posture of the vertical shaft when the posture of vertical shaft construction equipment is changed due to construction deviation; the pipeline clamping assembly 2 is driven by the hydraulic pump 52 station to clamp the pipeline, a working oil way of the pipeline clamping assembly 2 is provided with a pressure sensor, the pressure sensor detects whether the pipeline clamping assembly 2 is in a clamping state in real time, the pipeline is ensured to be always in the clamped state in the extending process, if the pressure sensor detects that the pressure is insufficient, an associated alarm signal alarms and even stops, at the moment, the reasons of the pressure deficiency need to be checked, and the pressure regulation is carried out by adjusting components such as a pressure valve of the hydraulic pump 52 station.

Referring to fig. 3, the lift cylinder 6 is connected with an external hydraulic source to maintain a static balance state of the lift table under the support of the lift cylinder 6, the lift table is kept stationary in the static balance state, and the lift table is broken to move up and down after the lift table receives an external force exceeding a preset value or gives an ascending and descending instruction. The lifting cylinder 6 adjusts back pressure through oil return throttling, so that the telescopic cylinder can follow the vertical shaft construction equipment 23, when the vertical shaft construction equipment does not work, the lifting table keeps fine balance, when the construction equipment is tunneled, a pulling force is applied to the lifting table through a pipeline, the lifting table moves downwards along with the pulling force, and then the pipeline clamping assembly 2 and the clamped pipeline are driven to downwards tunnel along with the vertical shaft construction equipment.

In a specific embodiment, the control circuit of the lifting cylinder 6 comprises an oil tank 51, a hydraulic pump 52, a ball valve 53, a pressure reducing valve 54, a reversing valve 55, a hydraulic lock 56, a one-way speed regulating valve 57 and a pressure measuring head 58; the control loop works as follows:

when the system works, the hydraulic pump 52 takes oil from the oil tank 51, the ball valve 53 is opened, and the pressure reducing valve 54 is regulated, so that the system oil pressure can always ensure the up-and-down action of the hydraulic oil cylinder in the working process; when the shaft tunneling equipment needs tunneling downwards, the left position of the reversing valve 55 is electrified, the hydraulic cylinder is retracted (the hydraulic cylinder retraction corresponds to the downward construction of the shaft construction equipment), the opening degree of the throttle valve is regulated, and the retraction speed of the hydraulic cylinder is ensured to be consistent with the tunneling speed of the equipment downwards; if the right position of the reversing valve 55 is needed to be electrified during pipe replacement, the hydraulic oil cylinder stretches out, and the hydraulic oil cylinder stops when the pipe replacement height is met. When the shaft equipment stops working, the hydraulic lock 56 can ensure that the oil cylinder cannot move downwards due to dead weight; when the actual working pressure needs to be tested, the pressure of the rodless cavity and the pressure of the rod cavity can be measured through the pressure measuring head 58; meanwhile, the stroke sensor 3 of the hydraulic oil cylinder can detect the telescopic stroke of the oil cylinder in the actual construction process, and the excessive expansion of a pipeline needing to be extended is avoided.

The stand includes fixed stand 102 and flexible stand 108, and fixed stand 102 one end is connected with mounting plate 101, the other end and flexible stand 108 fixed connection, and the one end and the work platform 106 fixed connection of fixed stand 102 are kept away from to flexible stand 108, all are provided with the cavity in fixed stand 102 and the flexible stand 108, and lift cylinder 6's pole chamber is located the cavity of fixed stand 102, and telescopic cylinder's no pole chamber is located the cavity of flexible stand 108. The rodless cavity oil pipe and the rod cavity oil pipe of the lifting oil cylinder 6 are led out from the fixed upright post 102 of the pipeline extension frame 1, and the pipeline does not move along with the lifting platform.

In the embodiment, the installation bottom plate 101 is connected with the wellhead ground by bolts, and the bolts are cast-in-place bolts or embedded bolts by punching, so that the pipeline extension frame 1 is integrally fixed at the wellhead pipeline extension position; the fixed upright post 102 is connected with the mounting bottom plate 101 in a welding mode, and the rodless cavity of the lifting oil cylinder 6 is connected with the hinged lug seat of the mounting bottom plate 101 through a pin shaft. The lifting cylinder 6 can stretch and retract in the fixed upright post 102, so as to drive the extension pipeline to move up and down. The guardrail 105 is connected with the working platform 106 through bolts, prevents that the staff from unexpected falling at the takeover in-process, is connected through the welding mode between working platform 106 and the flexible stand 108, has welded the ear mount on the working platform 106. The slide rail 107 is a channel steel, and the concave surface of the channel steel is a mechanically-processed slide groove, so that the pipeline clamping assembly 2 can move transversely in the slide rail 107 conveniently.

The pipeline extension device further comprises a step ladder 4, one end of the step ladder 4 is fixed on the bottom surface, the other end of the step ladder is fixed on the working platform 106, the upper end of the step ladder 4 is fixed with a step ladder 4 fixing frame through bolts, the lower end of the step ladder 4 fixing frame is fixed with a concrete floor in a pouring mode, the step ladder 4 fixing frame is arranged close to the pipeline extension frame 1, and workers can reach an upper operation platform of the pipeline extension frame 1 through the step ladder 4.

Referring to fig. 5, a stroke sensor 3 is provided on the pipe extension frame 1, the stroke sensor 3 includes a fixed end and a movable end, the fixed end of the stroke sensor 3 is fixed on the telescopic upright 108, and the movable end of the stroke sensor 3 is fixed on the lifting table. In this embodiment, the fixed end of the travel sensor 3 is mounted on the travel sensor fixing frame 103, the travel sensor fixing frame 103 is welded on the fixed upright post 102 of the pipeline extension frame 1 in a welding manner, the wire pulling end of the travel sensor 3 is fixed on the travel sensor moving frame 104, the travel sensor moving frame 104 is fixed on the lifting table of the pipeline extension frame 1, the lifting cylinder 6 stretches and contracts to drive the lifting table to move up and down, and meanwhile, the wire pulling end of the travel sensor 3 is along with the upper telescopic upright post 108 to realize real-time monitoring of pipeline extension data; in a specific embodiment, the travel sensor 3 is a pull rope type travel sensor 3, and the pipeline extension amount can be determined through real-time extension data, so that the problem that an excessively extended pipeline or a pipeline is not extended timely due to personnel operation is avoided. When the pipeline clamping assembly 2 is driven to the fixed end of the stroke sensor 3 of the pipeline extension frame 1, the stroke sensor 3 feeds back a signal of a pipeline to be extended to the control room, and equipment is associated to stop tunneling. In other embodiments, the travel sensor 3 can be replaced by a proximity switch.

Referring to fig. 4, the pipe clamping assembly 2 further includes two guide rods 201, the guide rods 201 are parallel to the sliding rail 107, two ends of each clamp 203 are respectively in sliding fit with one guide rod 201, a slide block 204 in sliding fit with the sliding rail 107 is arranged on each clamp 203, an end cover 205 is arranged between the two guide rods 201, one end of a clamping cylinder 208 is connected with the end cover 205, and the other end is connected with the clamp 203. One side of each clamp 203, which is close to the other, is respectively provided with an arc-shaped groove matched with the pipeline, and a rubber pad 207 is arranged in the arc-shaped groove.

In this embodiment, the guide rod 201 connects the pipe clamping assembly 2 into a single assembly by the nut 202, wherein the clamp 203 is connected to the rubber pad 207 by the screw 206, and the rubber pad 207 provides a certain buffer for the clamp 203 to clamp the pipe, and reduces vibration and noise and abrasion of the clamp 203 and the pipe itself. The sliding block 204 is fixed with the clamp 203 in a welding mode, so that the pipeline clamp assembly 2 integrally transversely moves left and right in the track of the sliding rail 107. The clamping cylinder 208 is provided with a counter force by the end cover 205, a rodless cavity of the clamping cylinder 208 is arranged in a round blind plate of the end cover 205, a rod cavity cylinder of the clamping cylinder 208 is arranged in a blind hole of the clamp 203, and the clamp 203 is driven to extend by extending of the clamping cylinder 208, so that the clamping of a pipeline is realized.

Referring to fig. 6, the present solution also discloses a pipeline extension construction method, which includes the following steps:

s1, enabling the pipeline clamping assembly 2 to clamp the installed vertical hard pipe, and disconnecting the connection between the installed vertical hard pipe and the horizontal bent pipe 28;

s2, lifting the lifting platform through the lifting oil cylinder 6, and further driving the vertical hard pipe to move upwards until the flange surface at the upper end of the vertical hard pipe is positioned on the upper part of the working platform 106;

s3, hoisting the extension hard pipe above the working platform 106, and connecting a flange at the lower end of the extension hard pipe with a flange at the upper end of the vertical hard pipe;

s4, the lifting platform descends through the lifting oil cylinder 6, and then the vertical hard pipe is driven to move downwards;

s5, connecting the lower end flange surface of the horizontal bent pipe 28 with the upper end flange surface of the extension hard pipe;

s6, tunneling the shaft construction equipment, regulating back pressure by the lifting oil cylinder 6 through oil return throttling, enabling the lifting oil cylinder 6 to follow the shaft construction equipment, and driving the pipeline clamping assembly 2 and the clamped pipeline to tunnel downwards along with the shaft construction equipment

The step of connecting the lower end flange surface of the horizontal elbow 28 with the upper end flange surface of the extension rigid pipe further comprises the following steps:

the pipe clamping assembly 2 is loosened, the horizontal bent pipe 28 is lifted, the vertical pipe including the extending hard pipe is further driven to ascend, and the lifting is stopped when the position of the lower end flange surface of the extending hard pipe is consistent with that of the upper end flange surface of the original installed vertical hard pipe.

In step S6, when the pipe clamping assembly 2 is driven to the fixed end of the stroke sensor 3 of the pipe extension frame 1, the stroke sensor 3 feeds back the signal of the pipe to be extended to the control room, and the tunneling equipment is associated to stop tunneling.

When the vertical shaft construction equipment needs to extend a pipeline, the pipeline clamping assembly 2 needs to clamp the installed vertical hard pipe, the connection between the installed vertical hard pipe and the horizontal bent pipe 28 is disconnected, the lifting oil cylinder 6 is operated to extend, and then the vertical hard pipe is driven to move upwards until the flange surface at the upper end of the vertical hard pipe is positioned on the upper portion of the working platform 106, and the lifting oil cylinder 6 stops extending. The extension hard pipe is transferred to the upper part of the pipeline extension frame 1 through the transfer hoist 27, the horizontal bent pipe 28 is lifted to a certain height by the lifting hoist 29, and the lifting height meets the requirement of the installation of the extension hard pipe. The lower end flange of the extension hard pipe is connected with the upper end flange of the vertical hard pipe by a tool, after connection is completed, the hoist 27 is loosened, the lifting cylinder 6 is operated to retract, the extension hard pipe is driven to move downwards, the lifting cylinder 6 stops retracting when the upper end flange surface of the extension hard pipe is located at the upper part of the working platform 106 by about 500mm, and the compensation hose is in a retracting bending state. Simultaneously, the lifting hoist 29 is utilized to lower the horizontal bent pipe 28, when the lower end flange surface of the horizontal bent pipe 28 and the upper end flange surface of the extension hard pipe are basically positioned on the same plane, the lifting hoist 29 stops to lower, and at the moment, the extension hose 30 is in a retracted and bent state. After the lower flange surface of the horizontal elbow 28 is lowered into place, the upper end flange of the extension pipe is connected to the lower end flange of the horizontal elbow 28 by a tool.

The pipe clamping assembly 2 is required to loosen the installed vertical hard pipe, the lifting hoist 29 is utilized to lift the horizontal bent pipe 28, and then the vertical pipe including the extending hard pipe is driven to rise, and the lifting is stopped when the position of the lower end flange surface of the extending hard pipe is consistent with that of the upper end flange surface of the original installed vertical hard pipe. At this time, the compensation hose and the extension hose 30 should be in a stretched state at the same time. The pipeline clamping assembly 2 stops rising when rising to the upper pull wire end of the stroke sensor 3 through the lifting oil cylinder 6, the stroke sensor 3 feeds a connecting pipe completion signal back to the control room, and meanwhile the pipeline clamping assembly 2 clamps the pipeline, so that the pipeline extension connecting pipe process is completed. The minimum bend radius of the tubing determines the bend limit of the tubing, and once this value is exceeded, there is an adverse effect of the tubing breaking or collapsing. When the compensation hose is in a retracted and bent state, the compensation hose is easy to damage, and after the extension pipe is additionally arranged, the vertical pipeline which drives the extension hard pipe to be lifted upwards can reduce the bending of the compensation hose, so that the risk of damage of the compensation hose is reduced.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A conduit extension device, characterized by: comprises a pipeline extension frame (1), a lifting component and a pipeline clamping component (2);

the pipeline extension frame (1) comprises an upright post and a working platform (106) arranged at the top end of the upright post, and a through hole for a pipeline to pass through is formed in the working platform (106);

the lifting assembly comprises a lifting oil cylinder (6) arranged in the upright post, the telescopic end of the lifting oil cylinder (6) is connected with a lifting table, the lifting table slides along the length direction of the upright post, and a sliding rail (107) perpendicular to the upright post is arranged on the lifting table;

the pipeline clamping assembly (2) is arranged on the lifting table, the pipeline clamping assembly (2) comprises two clamps (203) and two clamping cylinders (208), the two clamps (203) are used for clamping the two sides of the circumference of a pipeline, and the clamping cylinders (208) drive the clamps (203) to clamp the pipeline;

the lifting oil cylinder (6) is connected with an external hydraulic source to enable the lifting platform to keep a static balance state under the support of the lifting oil cylinder (6), the lifting platform is kept static under the static balance state, and the static balance state is broken after the lifting platform receives the action of external force exceeding a preset value or gives an ascending and descending instruction, so that the lifting platform moves in a lifting mode.

2. The line extension apparatus of claim 1, wherein,

the pipeline clamping assembly (2) further comprises two guide rods (201), the guide rods (201) are arranged in parallel with the sliding rail (107), two ends of each clamp holder (203) are respectively in sliding fit with one guide rod (201), a sliding block (204) which is in sliding fit with the sliding rail (107) is arranged on each clamp holder (203), an end cover (205) is arranged between the guide rods (201), one end of each clamping cylinder (208) is connected with the end cover (205), and the other end of each clamping cylinder is connected with the clamp holders (203).

3. The line extension apparatus of claim 2, wherein,

arc grooves matched with the pipelines are respectively formed in one side, close to each other, of each clamp holder (203).

4. A pipe extension device according to claim 3, wherein

A rubber pad (207) is arranged in the arc-shaped groove.

5. The line extension apparatus of claim 4, wherein,

the stand includes fixed stand (102) and flexible stand (108), fixed stand (102) one end is connected with mounting plate (101), the other end and flexible stand (108) fixed connection, the one end and work platform (106) fixed connection of fixed stand (102) are kept away from to flexible stand (108), all be provided with the cavity in fixed stand (102) and flexible stand (108), the pole chamber of lift cylinder (6) is located the cavity of fixed stand (102), and the no pole chamber of flexible cylinder is located the cavity of flexible stand (108).

6. The line extension apparatus of claim 5, wherein,

the pipeline extension frame (1) is provided with a travel sensor (3), the travel sensor (3) comprises a fixed end and a movable end, the fixed end of the travel sensor (3) is fixed on the telescopic upright post (108), and the movable end of the travel sensor (3) is fixed on the lifting table.

7. The line extension apparatus of claim 1, wherein,

the pipeline extension device further comprises a step ladder (4), one end of the step ladder (4) is fixed on the bottom surface, and the other end of the step ladder is fixed on the working platform (106).

8. A pipe extension construction method using the pipe extension device according to any one of claims 1 to 7, comprising the steps of:

s1, enabling a pipeline clamping assembly (2) to clamp an installed vertical hard pipe, and disconnecting the installed vertical hard pipe from a horizontal bent pipe (28);

s2, lifting the lifting platform through the lifting oil cylinder (6) to drive the vertical hard pipe to move upwards until the flange surface at the upper end of the vertical hard pipe is positioned at the upper part of the working platform (106);

s3, hoisting the extension hard pipe above a working platform (106), and connecting a flange at the lower end of the extension hard pipe with a flange at the upper end of the vertical hard pipe;

s4, the lifting platform descends through the lifting oil cylinder (6), and then the vertical hard pipe is driven to move downwards;

s5, connecting the lower end flange surface of the horizontal elbow pipe (28) with the upper end flange surface of the extension hard pipe;

s6, tunneling the vertical shaft construction equipment, and regulating back pressure by the lifting oil cylinder (6) through oil return throttling, so that the lifting oil cylinder (6) follows the vertical shaft construction equipment, and further driving the pipeline clamping assembly (2) and the clamped pipeline to tunnel downwards along with the vertical shaft construction equipment.

9. The pipe extension construction method according to claim 8, wherein:

the step of connecting the lower end flange surface of the horizontal elbow pipe (28) with the upper end flange surface of the extension hard pipe further comprises the following steps:

the pipeline clamping assembly (2) is enabled to loosen the installed vertical hard pipe, the lifting horizontal bent pipe (28) is lifted, the vertical pipeline including the extending hard pipe is driven to rise, and the lifting is stopped when the position of the lower end flange surface of the extending hard pipe is consistent with that of the upper end flange surface of the original installed vertical hard pipe.

10. The pipe extension construction method according to claim 8, wherein:

in the step S6, when the pipe clamping assembly (2) is driven to the fixed end of the stroke sensor (3) of the pipe extension frame (1), the stroke sensor (3) feeds back a signal of the pipe to be extended to the control room, and the tunneling equipment is associated to stop tunneling.