Heat preservation waterproof sealing structure of heat supply pipeline joint

Abstract

The utility model discloses a heat preservation waterproof sealing structure for a heat supply pipeline joint, and belongs to the technical field of pipeline construction. A joint high-density polyurethane thermal insulation layer is wrapped at a joint welding seam of a working steel pipe, an electric hot melting sleeve is wrapped outside the joint high-density polyurethane thermal insulation layer, and two ends of the electric hot melting sleeve are overlapped and covered on high-density polyethylene outer sheaths on two sides of the joint high-density polyurethane thermal insulation layer. The utility model is creatively improved aiming at the traditional heat supply pipeline joint heat preservation construction technology, particularly effectively improves the integral heat preservation waterproof sealing effect at the welding seam of the pipeline joint, improves the construction quality, ensures the one-time acceptance qualification rate, and meets the design and specification requirements. The device is scientific in design, reasonable in structure, convenient to operate and safe and convenient to construct, the construction difficulty is reduced to a great extent, the construction progress is accelerated, and the consumption of manpower, time, materials and the like is effectively reduced, so that the purposes of saving cost and reasonably utilizing resources are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline construction technical field, especially relates to the heat supply pipeline's heat preservation waterproof construction, and specifically is a kind of heat supply pipeline joint heat preservation waterproof sealing structure. BACKGROUND

[0002] The heat preservation waterproof of heat supply pipeline is the core link of system efficient safe operation.Both it can reduce heat loss, avoid condensate corrosion pipeline, can also block external moisture infiltration pipeline and cause structural damage, to ensure stable heating, prolong equipment life, also can reduce energy consumption and fault risk.Both it is the hard requirement of technical specification, and it is the key measure to realize energy saving and heat supply.

[0003] The heat preservation waterproof treatment of heat supply pipeline joint is the key and difficulty in the whole heat preservation waterproof engineering, and the heat preservation waterproof structure of existing heat supply pipeline joint is relatively simple, without perfect sealing structure, especially for the sealing quality of pipeline joint weld, the overall heat preservation waterproof effect of heat supply pipeline is affected. SUMMARY

[0004] The utility model aims at solving the problem of unreasonable heat preservation waterproof structure design of existing heat supply pipeline, especially the poor sealing effect of joint weld, and provides a kind of heat supply pipeline joint heat preservation waterproof sealing structure of new structure design.

[0005] The utility model is realized through the following technical schemes:

[0006] A kind of heat supply pipeline joint heat preservation waterproof sealing structure, including the abutment of multiple working steel pipes in sequence, the abutment of adjacent two working steel pipes is connected by joint weld;Pipe body of each working steel pipe is wrapped with pipe body high-density polyurethane insulation layer, and pipe body high-density polyurethane insulation layer is wrapped with high-density polyethylene outer sheath outside;The joint weld of adjacent two working steel pipes is wrapped with joint high-density polyurethane insulation layer, and electric hot melting sleeve is wrapped outside joint high-density polyurethane insulation layer, and the both ends of electric hot melting sleeve are overlapped and covered on the high-density polyethylene outer sheath on the both sides of joint high-density polyurethane insulation layer.

[0007] Further, the thickness of joint high-density polyurethane insulation layer and pipe body high-density polyurethane insulation layer is consistent, and the both ends of joint high-density polyurethane insulation layer are respectively connected with the end of pipe body high-density polyurethane insulation layer on its both sides.

[0008] Further, the overlapped place of electric hot melting sleeve and high-density polyethylene outer sheath is wrapped with radiation crosslinking polyethylene heat shrinkable tape.

[0009] Further, the overlapping part of the radiation cross-linked polyethylene heat shrinkable belt and the high-density polyethylene outer sheath is wrapped with a butyl waterproof tape, and the overlapping part of the radiation cross-linked polyethylene heat shrinkable belt and the electric heat melting sleeve is wrapped with a butyl waterproof tape.

[0010] Further, the edge of the radiation cross-linked polyethylene heat shrinkable belt is located at the middle position of the butyl waterproof tape.

[0011] Further, the electric heat melting sleeve is provided with a grouting hole and an exhaust hole.

[0012] Further, the grouting hole and the exhaust hole are sealed by a plug cap hot melt welding and a butyl waterproof sheet.

[0013] The utility model discloses a kind of improvements on traditional heat supply pipeline joint heat preservation construction technology, especially effectively improve the overall heat preservation waterproof sealing effect of pipeline joint weld, improve construction quality, ensure that one-time acceptance qualified rate, meet design and specification requirements.The utility model design is scientific, structure is reasonable, easy to operate, construction is safe and convenient, greatly reduce construction difficulty, speed up construction progress, effectively reduce the consumption of manpower, time, material etc., to reach the purpose of cost saving, resource rational utilization. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings used herein provide further description of the utility model, form part of the present application, and the illustrative embodiment of the utility model and its description are used to explain the utility model, and do not constitute undue limitation on the utility model.

[0015] Figure 1 It is the plan view of the utility model.

[0016] Figure 2 It is Figure 1 the section view of A-A in Fig.

[0017] Figure 3 It is Figure 2 the enlarged schematic view of B part in Fig.

[0018] Figure 4 It is Figure 2 the structural schematic view of grouting hole and exhaust hole in Fig.

[0019] In the drawing: 1-work steel pipe, 2-joint weld, 3-pipe body high-density polyurethane insulation layer, 4-high-density polyethylene outer sheath, 5-electric heat melting sleeve, 6-joint high-density polyurethane insulation layer, 7-radiation cross-linked polyethylene heat shrinkable belt, 8-butyl waterproof tape, 9-grouting hole, 10-exhaust hole, 11-butyl waterproof sheet, 12-plug cap. DETAILED DESCRIPTION

[0020] For the person skilled in the art to better understand the present application, the present application will be further clearly and completely explained in combination with the reference drawings and examples. It should be noted that the features in the embodiments and examples in the present application can be combined with each other without conflict. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0021] As shown in Figures 1 to 4 The present embodiment provides a heat supply pipeline joint heat preservation waterproof sealing structure, which comprises a plurality of working steel pipes 1 arranged in sequence, and the abutting portions of the adjacent two working steel pipes 1 are connected through joint welds 2.

[0022] The pipe body of each working steel pipe 1 is wrapped with a pipe body high-density polyurethane heat preservation layer 3, and the pipe body high-density polyurethane heat preservation layer 3 is wrapped with a high-density polyethylene outer sheath 4.

[0023] The joint welds 2 of the adjacent two working steel pipes 1 are wrapped with joint high-density polyurethane heat preservation layers 6, the thicknesses of the joint high-density polyurethane heat preservation layers 6 and the pipe body high-density polyurethane heat preservation layers 3 are consistent, and the two ends of the joint high-density polyurethane heat preservation layers 6 are respectively connected with the ends of the pipe body high-density polyurethane heat preservation layers 3 on both sides; the joint high-density polyurethane heat preservation layers 6 are wrapped with electric heat melting sleeves 5, and the two ends of the electric heat melting sleeves 5 are overlapped on the high-density polyethylene outer sheaths 4 on both sides of the joint high-density polyurethane heat preservation layers 6, that is, the abutting portions of the joint high-density polyurethane heat preservation layers 6 and the pipe body high-density polyurethane heat preservation layers 3 are covered and sealed by the electric heat melting sleeves 5.

[0024] The overlapping portions of the electric heat melting sleeves 5 and the high-density polyethylene outer sheaths 4 are wrapped with radiation cross-linked polyethylene heat shrinkable tapes 7, that is, the sleeve edges of the electric heat melting sleeves 5 are covered and sealed by the radiation cross-linked polyethylene heat shrinkable tapes 7, and the side edges of the electric heat melting sleeves 5 are located at the middle positions of the radiation cross-linked polyethylene heat shrinkable tapes 7.

[0025] The overlapping portions of the radiation cross-linked polyethylene heat shrinkable tapes 7 and the high-density polyethylene outer sheaths 4 are wrapped with butyl waterproof adhesive tapes 8, that is, the side edges of the radiation cross-linked polyethylene heat shrinkable tapes 7 connected with the high-density polyethylene outer sheaths 4 are covered and sealed by the butyl waterproof adhesive tapes 8, and the side edges of the radiation cross-linked polyethylene heat shrinkable tapes 7 are located at the middle positions of the butyl waterproof adhesive tapes 8.

[0026] The overlapping portions of the radiation cross-linked polyethylene heat shrinkable tapes 7 and the electric heat melting sleeves 5 are wrapped with butyl waterproof adhesive tapes 8, that is, the side edges of the radiation cross-linked polyethylene heat shrinkable tapes 7 connected with the electric heat melting sleeves 5 are covered and sealed by the butyl waterproof adhesive tapes 8, and the side edges of the radiation cross-linked polyethylene heat shrinkable tapes 7 are located at the middle positions of the butyl waterproof adhesive tapes 8.

[0027] The electric heating melting sleeve 5 is provided with a grouting hole 9 and an exhaust hole 10, the orifice of the grouting hole 9 and the orifice of the exhaust hole 10 are both sealed by a plug cap 12 and pasted with a butyl waterproof sheet 11.

[0028] The above-described embodiments only express the optimal implementation of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A heat supply pipeline joint heat insulation waterproof sealing structure, comprising a plurality of working steel pipes arranged in sequence, the abutting portions of two adjacent working steel pipes being connected through a joint weld, and the pipe body of each working steel pipe being wrapped with a pipe body high-density polyurethane insulation layer, and the pipe body high-density polyurethane insulation layer being wrapped with a high-density polyethylene outer sheath; characterized in that: The joint welding seam of the two adjacent working steel pipes is wrapped with a joint high-density polyurethane heat preservation layer, and the joint high-density polyurethane heat preservation layer is wrapped with an electric heating melting sleeve. ​ 2. The heat-supply pipeline joint heat-preservation waterproof sealing structure according to claim 1, characterized in that: The thickness of the joint high-density polyurethane heat preservation layer and the pipe body high-density polyurethane heat preservation layer is consistent, and the two ends of the joint high-density polyurethane heat preservation layer are respectively connected with the ends of the pipe body high-density polyurethane heat preservation layers on both sides.

3. The heat-supply pipeline joint heat-preservation waterproof sealing structure according to claim 2, characterized in that: The overlapping part of the electric heating melting sleeve and the high-density polyethylene outer sheath is wrapped with a radiation cross-linked polyethylene heat shrinkable tape.

4. The heat-supply pipeline joint heat-insulation waterproof sealing structure according to claim 3, characterized in that: The overlapping part of the radiation cross-linked polyethylene heat shrinkable tape and the high-density polyethylene outer sheath is wrapped with a butyl waterproof tape, and the overlapping part of the radiation cross-linked polyethylene heat shrinkable tape and the electric heating melting sleeve is wrapped with a butyl waterproof tape.

5. The heat-supply pipeline joint heat-insulation waterproof sealing structure according to claim 4, characterized in that: The tape edge of the radiation cross-linked polyethylene heat shrinkable tape is located at the middle position of the butyl waterproof tape.

6. The heat-supply pipeline joint heat-insulation waterproof sealing structure according to any one of claims 1-5, characterized in that: The electric heating melting sleeve is provided with a grouting hole and an exhaust hole.

7. The heat-supply pipeline joint heat-insulation waterproof sealing structure according to claim 6, characterized in that: The grouting hole and the exhaust hole are both sealed by a plug hot melt welding and pasted with a butyl waterproof sheet.

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