CN213809445U - Thermal pipeline structure for direct-buried laying and pipe-jacking laying connection - Google Patents

Abstract

The utility model discloses a heating power pipeline structure for direct-buried laying and pipe-jacking laying connection, which comprises a direct-buried hot water main pipeline, a waterproof sealing joint, a well chamber, an air release pipeline, a first valve, a compensating device, a short drain pipe, a drain pipeline, a second valve, a third valve and a concrete pipe for pipe-jacking which are connected in sequence, wherein a water supply and return pipeline for direct-buried laying enters the well chamber through the waterproof sealing joint, the compensator is arranged on the downward returning straight pipe, the double pull rod type corrugated compensator is arranged in the pipe well, not only the investment is saved, but also the problem that the connecting pipeline between the direct-buried pipeline and the pipe-jacking pipeline can not meet the stress is solved, the double pull rod type corrugated compensator is arranged, the direct buried pipeline and the pipeline laid by the jacking pipe can be laid linearly at a longer distance, the use of other compensators is reduced, the space position is saved, the pipeline leakage points are reduced, and the compensator is convenient for operators to maintain.

Description

Thermal pipeline structure for direct-buried laying and pipe-jacking laying connection

Technical Field

The utility model relates to a hot water pipeline lays the field, specifically indicates a heating power pipeline structure that is used for direct-burried to lay and push pipe laying connection.

Background

The hot water direct-buried pipeline is a pipeline for conveying hot water, and because the temperature difference exists between the working temperature of the pipeline and the ambient temperature, the hot water pipeline has certain hot elongation, and certain compensation measures are required to be taken to ensure that the thermal pipeline cannot be damaged due to stress generated by expansion with heat and contraction with cold. At present, square compensation or a mode of combining with a sleeve compensator is commonly used in a heat distribution pipeline, but the space position cannot be reserved for the square compensation in planning of many existing cities, and the planning position is basically a straight line. Meanwhile, the positions of other pipelines are considered during passing, the thermal pipeline with larger pipe diameter cannot pass through the middle of other pipelines and only can be laid at the lowest part of other pipelines, so that the requirement of passing is met by adopting a pipe jacking mode in construction. If the sleeve compensator is adopted, the blind plate force and the friction force are large, and a leak point is easily caused. Therefore, the pipe-jacking well chamber during pipe jacking can be utilized, and the compound pull rod type corrugated compensator is additionally arranged on the downward returning pipeline, so that the original well chamber can be utilized, and the thermal elongation of the thermal pipeline can be ensured.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned technical current situation, a heating power pipeline structure for direct-burried is laid and is laid with the push pipe and be connected is provided.

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a thermal power pipeline structure for direct-burried lays and push pipe lays and is connected, including the direct-burried hot water trunk line of order connection, waterproof sealing festival, the well room, the bleeder line, valve one, compensation arrangement, the sluicing nozzle stub, the sluicing pipeline, valve two, valve three, the concrete pipe is used in the push pipe, the confession return water pipeline of direct-burried laying advances the well room through waterproof sealing festival, because the pipeline that direct-burried pipeline and push pipe laid has the discrepancy in elevation, hot water pipeline enters into the well room and needs to return and connect the push pipe pipeline down, and set up compensation arrangement on the straight tube that returns down, connect the bleeder line respectively on confession return water pipeline high point, set up valve one on the bleeder line, guarantee that the gas in the pipeline can in time be discharged, connect the bleeder line respectively on confession return water pipeline low point, set up valve two and valve three on the bleeder line.

As an improvement, the air release pipeline is a prefabricated directly-buried polyurethane heat insulation pipeline, and the pipe diameter of the pipeline is DN 40.

As an improvement, the well chamber is a reinforced concrete well chamber.

As an improvement, the waterproof sealing energy can meet the requirement of thermal elongation of the buried pipeline.

As an improvement, the first valve and the third valve are both welded ball valves.

As an improvement, the compensation device is a double-pull-rod type corrugated compensator.

As an improvement, the short pipe and the water drainage pipeline both adopt prefabricated directly-buried polyurethane heat-insulating pipelines.

As an improvement, the second valve is a butterfly valve.

Compared with the prior art, the utility model the advantage lie in: make full use of push pipe well room sets up double entry pull rod type corrugated compensator in the pipe shaft, so both can save the investment, and solved the problem that connecting tube unsatisfied stress between direct-burried and the push pipe pipeline, through setting up double entry pull rod type corrugated compensator, make the pipeline that direct-burried pipeline and push pipe laid can lay at the straight line in longer distance, can reduce the use of other compensators like this, the spatial position has been saved, the pipeline leak source has been reduced, and the operating personnel of being convenient for maintains the compensator. The utility model discloses can also satisfy the requirement of heating power pipeline gassing and sluicing, satisfy the requirement of the safe operation of pipeline.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a plan view of the present invention.

As shown in the figure: 1 heating power pipeline water supply pipe, 2 heating power pipeline return water pipe, 3 waterproof sealing joints, 4 well rooms, 5 air release pipelines, 6 valves I, 7 compensation devices, 8 water drainage short pipes, 9 water drainage pipelines, 10 valves II, 11 valves III, and 12 concrete pipelines for jacking pipes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The thermal pipeline structure comprises a thermal pipeline water supply pipe 1, a thermal pipeline water return pipe 2, a waterproof sealing joint 3, a well chamber 4, an air release pipeline 5, a valve I6, a compensation device 7, a water release short pipe 8, a water release pipeline 9, a valve II 10, a valve III 11, a concrete pipeline 12 for the pipe jacking, the air release pipeline 5 is connected to the thermal pipeline water supply pipe 1 and the thermal pipeline water return pipe 2 respectively, the valve I6 is arranged on the air release pipeline 5, the compensator 7 is arranged on the thermal pipeline water supply pipe 1 and the thermal pipeline water return pipe 2 in the well chamber 4, the water release short pipe 8 and the water release pipeline 9 are arranged at the lowest point of the pipelines, and the valve II 10 and the valve III 11 are arranged on the water release pipeline 9.

The utility model discloses when concrete implementation, adopted a compensation arrangement 7 to carry out the thermal elongation compensation to buried pipeline and push pipe interior conduit to require waterproof seal festival 3 to satisfy the thermal elongation requirement of heating power pipeline delivery pipe 1, heating power pipeline wet return 2, be connected gassing pipeline 5 and heating power pipeline delivery pipe 1 and heating power pipeline wet return 2, will sluicing nozzle stub 8 and heating power pipeline delivery pipe 1 and heating power pipeline wet return 2 are connected.

The elongation of the waterproof sealing joint 3 can meet the requirement of thermal elongation delta L1 of a directly-buried laying pipeline, so that the integrity of a well chamber is ensured, and the water resistance of the well chamber cannot be damaged.

The compensation device 7 leaves enough displacement space in the well chamber, absorbs the thermal elongation delta L1 of the directly-buried laying pipeline and the delta L2 of the top-pipe laying thermal pipeline, so that the thermal pipeline is ensured to normally operate, and the faults of exceeding stress, cracking, even damage and the like caused by thermal expansion and contraction can not occur.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (8)

1. The utility model provides a thermal power pipeline structure that is used for direct-burried to lay and push pipe laying to be connected which characterized in that: including the heating power pipeline delivery pipe (1) that connects in proper order including the order of connecting, heating power pipeline wet return (2), waterproof sealing festival (3), well room (4), bleeder line (5), valve (6), compensation arrangement (7), drain pipe stub (8), drain pipe (9), valve two (10), valve three (11), concrete pipe (12) is used to the push pipe, connect bleeder line (5) on heating power pipeline delivery pipe (1) and heating power pipeline wet return (2) respectively, set up valve one (6) on bleeder line (5), heating power pipeline delivery pipe (1) in well room (4), set up compensation arrangement (7) on heating power pipeline wet return (2), set up drain pipe stub (8) and drain pipe (9) in the minimum of pipeline, set up valve two (10) and valve three (11) on drain pipe (9).

2. A thermal pipe structure for in-line and pipe-top laying connections as claimed in claim 1, wherein: the air release pipeline (5) is a prefabricated directly-buried polyurethane heat insulation pipeline, and the pipe diameter of the pipeline is DN 40.

3. A thermal pipe structure for in-line and pipe-top laying connections as claimed in claim 1, wherein: the well chamber (4) is a reinforced concrete well chamber.

4. A thermal pipe structure for in-line and pipe-top laying connections as claimed in claim 1, wherein: the waterproof sealing joint (3) can meet the requirement of the thermal elongation of the directly-buried pipeline.

5. A thermal pipe structure for in-line and pipe-top laying connections as claimed in claim 1, wherein: and the first valve (6) and the third valve (11) are both welded ball valves.

6. A thermal pipe structure for in-line and pipe-top laying connections as claimed in claim 1, wherein: the compensation device (7) is a compound pull rod type corrugated compensator.

7. A thermal pipe structure for in-line and pipe-top laying connections as claimed in claim 1, wherein: the short pipe (8) and the water drainage pipeline (9) both adopt prefabricated directly-buried polyurethane heat-insulating pipelines.

8. A thermal pipe structure for in-line and pipe-top laying connections as claimed in claim 1, wherein: the second valve (10) is a butterfly valve.

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