CN215110917U - Laying structure of municipal administration heat supply pipeline - Google Patents

Abstract

The utility model discloses a laying structure of municipal administration heat supply pipeline, which adopts a direct-buried laying structure and comprises a water supply pipeline (1), a water return pipeline (2), a concrete fixed pier (4), a fixed joint and a sleeve compensator (6), wherein the water supply pipeline (1) and the water return pipeline (2) are arranged in parallel and embedded in a groove, and two ends of the fixed joint are fixedly connected with the water supply pipeline (1); the water supply pipeline (1) and the fixed joint are arranged in the concrete fixing pier (4) together, and two sides of the water supply pipeline (1) are connected with the sleeve compensator (6) respectively. The utility model adopts the connection mode of fixing and compensating the water supply pipeline; return water pipeline adopts the connected mode of not having fixedly, no compensation, lays the form with the tradition and compares: the method has the advantages of reducing the engineering investment, accelerating the construction progress, reducing the operation cost and the like, and simultaneously enriches the laying mode of the pipeline, so that the operation adjustment is more convenient.

Description

Laying structure of municipal administration heat supply pipeline

Technical Field

The utility model discloses a town heat supply pipeline lays technical field, especially relates to a municipal administration heat supply pipeline lays structure.

Background

The urban central heating is realized by taking a municipal heating pipeline as a bridge and connecting a heat source and a heat user together. The construction of municipal heat supply pipelines has high investment, long period, high construction difficulty and more coordination work. The reasonable selection of the laying mode of the municipal heat supply pipeline can effectively save the construction investment on the premise of ensuring the safety and reliability of the heat supply network.

When the water supply and return pipeline adopts a fixed and compensated laying mode, the construction period is long and the construction cost is high; when the water supply and return pipeline adopts a non-fixed and non-compensation laying mode, the application range is narrow, and the practicability is not strong, so that the improvement of the existing laying mode is urgent.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a municipal administration heat supply pipeline lays structure to solve among the prior art direct-burried application scope who lays the mode existence narrower, defect such as practicality is not strong.

The utility model provides a technical scheme, specifically, a municipal administration heat supply pipeline's laying structure adopts direct-burried laying structure, including water supply pipe, return water pipe, concrete anchor block, fixed knot, sleeve compensator, water supply pipe and return water pipe arrange side by side, bury in the slot, the both ends of fixed knot and water supply pipe fixed connection; the water supply pipeline and the fixed joint are arranged in the concrete fixing pier together, and two sides of the water supply pipeline are connected with the sleeve compensator respectively.

Further, the concrete fixing pier is in an inverted T shape.

Further, the water supply pipeline and the water return pipeline respectively comprise a working steel pipe, a heat insulation layer and an outer protection pipe from inside to outside; the fixed knot comprises a fixed clamping plate and rib plates, the fixed clamping plate is fixed on the outer wall of the working steel pipe, the rib plates are fixed on two sides of the fixed clamping plate, and the rib plates are provided with a plurality of rib plates which are distributed and fixed on the circumference of the outer wall of the working steel pipe at equal intervals.

The utility model provides a laying structure of municipal administration heat supply pipeline, adopt the direct burial form of laying, this structure makes when laying the heat supply pipeline, not only save material, shorten construction cycle, and make the project investment reduce greatly, the application scope is wide, the practicality is strong;

the water supply pipeline adopts a fixed and compensated connection mode; return water pipeline adopts the connected mode of not having fixedly, no compensation, lays the form with the tradition and compares: the method has the advantages of reducing the engineering investment, accelerating the construction progress, reducing the operation cost and the like, and simultaneously enriches the laying mode of the pipeline, so that the operation adjustment is more convenient.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic plan structure view of a laying structure of a municipal heat supply pipeline according to an embodiment of the present disclosure;

fig. 2 is a schematic view of a cross-sectional structure a-a of a laying structure of a municipal heat supply pipeline according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a section B-B of a municipal heating pipeline laying structure according to an embodiment of the present disclosure;

fig. 4 is a schematic plan view of a fixing knot in a laying structure of a municipal heat supply pipeline according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a-a section structure of a fixed knot in a municipal heating pipeline laying structure according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of systems consistent with certain aspects of the invention, as detailed in the appended claims.

The water supply temperature of the town central heating system is high, usually 95-110 ℃, the temperature of the water return pipeline is lower, usually 60-70 ℃, therefore, the utility model adopts a fixed and compensated connection mode for the water supply direct-buried pipeline; the backwater direct-buried pipeline adopts a non-fixed and non-compensation connection mode.

As shown in fig. 1-3, a laying structure of municipal heat supply pipelines adopts a direct-buried laying structure, wherein the underground direct-buried laying means that the heat supply pipelines are directly laid in soil, and the soil is directly contacted with an outer protection pipe 35 of the pipelines.

The concrete water supply system comprises a water supply pipeline 1, a water return pipeline 2, a concrete fixing pier 4, a fixing joint and a sleeve compensator 6, wherein the water supply pipeline 1 and the water return pipeline 2 are arranged in parallel and embedded into a groove, and two ends of the fixing joint are fixedly connected with the water supply pipeline 1; the water supply pipeline 1 and the fixed joint are arranged in the concrete fixing pier 4 together, and two sides of the water supply pipeline 1 are connected with the sleeve compensator 6 respectively. In this embodiment, the water return pipe 2 is not connected to the fixed joint and is not disposed in the concrete fixed pier 4, and both sides of the water return pipe 2 are not connected to the sleeve compensator 6.

As a further improvement of the technical scheme, the concrete fixing pier 4 is in an inverted T shape, and the direct-buried fixing piers of the water supply pipeline and the water return pipeline in the prior art are mostly square. When adopting this kind of "square" anchor block to be applied to the mode of laying of this embodiment, adopt water supply pipe to have in this embodiment promptly and be fixed with the compensation, return water pipe does not have fixed uncompensated structural style, for satisfying the requirement of water supply pipe to anchor block structural strength, can lead to supplying the concrete volume to increase between the return water pipe for supply return water pipe interval increases.

The utility model discloses a fall "T" type anchor block, through the concrete volume that increases 1 anchor block bottom of water supply pipe, reduce the anchor block concrete volume of 1 upper portion of water supply pipe and both sides, increase the reinforcing bar specification, reduce the reinforcing bar interval, can realize both satisfying the strength requirement of water supply pipe to the reinforced concrete anchor block structure like this, guarantee the security, the concrete volume between the confession return water pipeline has been reduced again, and then can reduce and supply the return water pipeline interval, reduce the trench width, make water supply pipe have and be fixed with the compensation, this kind of laying mode of return water pipeline no fixed uncompensation is convenient to implement and application scope wider, reduce engineering cost simultaneously.

The water supply pipeline 1 and the water return pipeline 2 respectively comprise a working steel pipe 33, a heat insulation layer 34 and an outer protection pipe 35 from inside to outside.

As the further improvement of the technical scheme, the fixing joint comprises a fixing clamping plate 3 and rib plates 31, the fixing clamping plate 3 is fixed on the outer wall of the working steel pipe 33, the rib plates 31 are fixed on two sides of the fixing clamping plate 3, and the rib plates 31 are arranged on the circumference of the outer wall of the working steel pipe 33 and are distributed and fixed at equal intervals.

In the fixed joint structure adopted in the prior art, when a pipeline with a nominal diameter of DN25-DN150 is adopted, the length L of a working steel pipe in the fixed joint is 2000 mm; when the pipeline has a nominal diameter DN200-DN350, the length L of the working steel pipe in the fixed joint is 4000 mm; the nominal diameter DN400-DN1400 pipeline, the length L of the working steel pipe in the fixed joint is 6000 mm. Fig. 4-5 are schematic structural views of the fixing joint of the present invention. This embodiment is through setting up the floor structure in the fixed knot to improve fixed knot intensity, and then reduce the length of work steel pipe 33 in the fixed knot. Adopt this kind of fixed knot structural style, no matter how big the pipe diameter, all can fall to 2000mm with the fixed work steel pipe length of fixed festival, because of the length of work steel pipe in the fixed knot is 2000mm, the concrete anchor block alright with the weld joint parcel in fixed knot both ends, just so can strengthen weld joint department joint strength, further reduce the concrete volume between the confession return water pipeline for water supply pipeline has fixedly, has the compensation, return water pipeline does not have fixedly, this kind of mode of laying of uncompensation further easy to carry out.

Because of the cancellation of the compensator of the return water pipeline, the leakage points of the pipeline are reduced, the water loss rate is reduced, and the maintenance cost is greatly reduced. The laying mode can accelerate the construction progress and reduce the engineering cost. The return water direct-buried pipeline is laid in a non-fixed and non-compensation direct-buried mode, so that the local resistance of a heat supply system is reduced, the outlet pressure of a circulating pump of a heat source plant is reduced, and the running electricity charge of the heat source plant is reduced.

By adopting the laying structure provided by the embodiment, when laying, the laying method comprises the following steps:

(1) setting the water supply temperature to be 110 ℃, the water return temperature to be 60 ℃ and the design pressure to be 1.0 MPa;

(2) according to design drawings and standard requirements, the basic requirements of the groove form and the soil covering depth are met.

(3) And two ends of the fixed joint are welded with the water supply pipeline and embedded into the reinforced concrete fixed pier, and pipelines at two sides of the outer side of the reinforced concrete fixed pier are welded with the sleeve compensator and embedded into the groove.

(4) The water return pipeline is directly embedded into the groove, and the reinforced concrete fixing pier and the compensator are not arranged.

In the prior art, a fixed and compensated laying structure has large engineering investment, long construction period and large resistance of a heat supply system; there is not fixed, no compensation lays, the pipeline buries deeply, and need adopt big curvature elbow and return bend, the prefabricated return bend of low-angle dog-ear adoption, it is big to lead to the earth volume, and the high urban pipeline of ground water level can't bury deeply, can't adopt not fixed, no compensation lays the mode, the condition is complicated when the on-the-spot underground, the line position, when dog-ear and design drawing do not accord with, the prefabricated return bend of mill has very big probability can't use, increase the construction degree of difficulty, influence engineering progress, consequently there is not fixed, no compensation lays the mode application scope narrower, the practicality is not strong.

By adopting the laying mode provided by the embodiment, the backwater direct-buried pipeline is not provided with the reinforced concrete fixing piers and the compensator, so that the engineering investment is reduced, the larger the pipe diameter is, the longer the pipeline route is, the more the engineering investment can be greatly reduced, and the construction progress can be accelerated. The local resistance of a heating system is reduced, the outlet pressure of a circulating pump of a heat source plant is reduced, and the running electric charge of the heat source plant is reduced. The elimination of the compensator also reduces the leakage points of the pipeline, reduces the water loss rate and greatly reduces the maintenance cost.

The mode of laying of pipeline has been richened to the structure that this embodiment provided, satisfying under the standard basic requirement condition, different soil condition, the different depth of burying underground all can adopt the utility model discloses direct-burried mode of laying does not receive the earthing depth of burying restriction, does not receive the restriction of soil constraint power.

When heating system adopted quality-volume adjustment, the pipeline difference in temperature or pressure can change, and the inside axial thrust increase of pipeline adopts the utility model discloses direct-burried laying mode supplies the wet return all can satisfy thrust and temperature rise requirement, more can guarantee system security, makes the operation adjust more convenient, and the heat source factory staff's of being convenient for courage more regulation ensures heat supply quality.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

The specific embodiments described herein are only used to explain the present invention, but not to limit the practical limitations of the present invention, any water supply pipeline is adopted to be fixed, there is compensation, the water return pipeline is not fixed, there is no compensation, but only the pipe diameter change, the soil covering burial depth, the compensator type and arrangement form, the structural form of the fixed pier and the change of the laying mode (pipe ditch, overhead) are carried out, without affecting the economic benefits produced by the present invention and the goal achieved, all belong to the scope covered by the technical contents disclosed in the present invention, all belong to the protection scope of the present invention.

Claims (3)

1. The laying structure of the municipal heat supply pipeline is characterized by adopting a direct-buried laying structure and comprising a water supply pipeline (1), a water return pipeline (2), a concrete fixing pier (4), a fixing joint and a sleeve compensator (6), wherein the water supply pipeline (1) and the water return pipeline (2) are arranged in parallel and buried in a groove, and two ends of the fixing joint are fixedly connected with the water supply pipeline (1); the water supply pipeline (1) and the fixed joint are arranged in the concrete fixing pier (4) together, and two sides of the water supply pipeline (1) are connected with the sleeve compensator (6) respectively.

2. Laying structure for municipal heating pipelines according to claim 1, characterized in that the concrete piers (4) are inverted T-shaped.

3. The laying structure of a municipal heating pipeline according to claim 1, wherein the water supply pipeline (1) and the water return pipeline (2) respectively comprise a working steel pipe (33), an insulating layer (34) and an outer protecting pipe (35) from inside to outside; the fixed knot comprises a fixed clamping plate (3) and rib plates (31), the fixed clamping plate (3) is fixed on the outer wall of the working steel pipe (33), the rib plates (31) are fixed on two sides of the fixed clamping plate (3), the rib plates (31) are provided with a plurality of parts, and the rib plates are distributed at equal intervals and fixed on the circumference of the outer wall of the working steel pipe (33).

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