A heating pipe connection structure

Abstract

The utility model discloses a kind of heating pipeline connecting structure, it is related to heating pipeline field, including first pipeline and second pipeline, the both ends of second pipeline are provided with connecting assembly, the outer wall of sealing sleeve is provided with filling pipe, the both sides of inside sealing sleeve are fixed with side plate, the inside of recess is provided with airbag ring.The utility model when steel pipe on first pipeline and second pipeline completes welding fixation, personnel will the sealing sleeve of second pipeline set towards first pipeline end outer wall push, so that sealing sleeve and first pipeline and second pipeline form cavity, fill into gas inside airbag ring, airbag ring expansion seals the gap between sealing sleeve and first pipeline outer wall, polyurethane foaming liquid that pours into cavity inside from filling pipe pours into cavity inside, foaming filling is carried out in cavity inside, so that the closed cell structure formed by polyurethane foaming liquid seals the connecting part of first pipeline and second pipeline and keeps warm.

Description

Technical Field

[0001] This utility model relates to the field of heating pipelines, specifically a heating pipeline connection structure. Background Technology

[0002] Heating pipelines are a core component of centralized heating systems. They are mainly used to transport heat energy media such as hot water or steam, and to stably transmit the heat generated by the heat source to users such as residential buildings, commercial buildings, and factories to meet the demand for indoor heating or industrial heat in winter. They are usually composed of transmission pipelines, polyurethane insulation layers, polyethylene outer sheaths, and various auxiliary accessories, and are the key carriers to ensure efficient and long-distance transmission of heat energy.

[0003] To ensure reliable connection between pipelines, personnel typically first peel off the polyurethane insulation layer and polyethylene outer sheath at the ends of the heating pipes, and then fix the ends of the two sets of heating pipes together by welding. When sealing and insulating the connection between the two sets of heating pipes, the traditional method is to first wrap the cut polyethylene sheath around the connection area of ​​the two sets of heating pipes, and then use heating equipment to fix the polyethylene sheath to the outer wall of the heating pipes through a hot-melt process. After the sheath is wrapped and fixed, a closed cavity is formed between the sheath and the outer wall of the two sets of heating pipes. Then, personnel open an injection hole on the sheath and pour polyurethane foam solution into the cavity through the hole. After the polyurethane foam solution has completely cured for about 24 hours, the connection of the heating pipes can be sealed and insulated, ensuring the thermal insulation performance of the connection during heat energy transmission.

[0004] However, using this sealing and insulation method not only requires cutting polyethylene sleeves to specific sizes, but also requires professional heating equipment when hot-melting and fixing the sleeves. This makes the sealing and insulation operation at the connection of the heating pipeline extremely cumbersome, which not only consumes a lot of manpower and time, but also has high requirements for tools and equipment, seriously affecting the efficiency and convenience of heating pipeline installation. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a heating pipeline connection structure to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heating pipeline connection structure, comprising a first pipeline and a second pipeline, wherein both ends of the second pipeline are provided with connecting components, the connecting components include a fixing ring, and the fixing ring is fixedly disposed on the outer wall of the end of the second pipeline, the outer wall of the fixing ring is fitted with a sealing sleeve, the outer wall of the sealing sleeve is provided with a filling pipe, both sides of the inner side of the sealing sleeve are fixed with side plates, a groove is formed inside a set of the side plates, an air bladder ring is disposed inside the groove, and an air supply pipe is installed on the outer wall of the air bladder ring, and one end of the second pipeline is connected to the first pipeline.

[0007] By adopting the above technical solution, the problem of the cumbersome operation of traditional heating pipeline connection sealing and insulation is solved. After the steel pipes on the first and second pipelines are welded and fixed, the personnel push the sealing sleeve on the second pipeline towards the outer wall of the end of the first pipeline, so that the sealing sleeve and the first and second pipelines form a cavity. Gas is filled into the airbag ring, and the airbag ring expands to seal and block the gap between the sealing sleeve and the outer wall of the first pipeline. Polyurethane foam liquid is poured back into the cavity from the filling pipe to foam and fill the cavity, so that the closed-cell structure formed by the solidification of polyurethane foam liquid seals and insulates the connection between the first and second pipelines.

[0008] The present invention is further configured such that a steel pipe, an insulation layer and a pipe sleeve are sequentially arranged inside the first pipe and the second pipe.

[0009] Preferably, the inside of the steel pipe is used to transport high-temperature media, and a polyurethane insulation layer wrapped around the steel pipe insulates the steel pipe, while a polyethylene sleeve protects the first and second pipes as a whole.

[0010] The present invention is further configured such that four sets of limiting blocks are fixed on the outer wall of the fixing ring, and a sliding groove is provided on the inner wall of the sealing sleeve.

[0011] Preferably, when a person pushes the sealing sleeve, the limiting block on the outer wall of the fixing ring limits and controls the movement direction of the sealing sleeve, so that the sealing sleeve is horizontally displaced.

[0012] The present invention is further configured such that four sets of fixing blocks are fixedly installed on the inner wall of the side plate, and four sets of slots are opened on one side of the outer wall of the fixing ring.

[0013] Preferably, when the side plate at one end of the sealing sleeve contacts the fixing ring, the fixing block on the inner wall of the side plate is inserted into the slot inside the fixing ring.

[0014] The present invention is further configured such that the cross-section of the slot is T-shaped and the fixing block is arrow-shaped.

[0015] Preferably, the retaining ring is limited in the slot by the retaining block with an arrow-shaped structure, so that the sealing sleeve will not be displaced by external force.

[0016] The present invention is further configured such that the inner wall diameter of the side plate is equal to the outer wall diameter of the first pipe.

[0017] Preferably, when one end of the sealing sleeve is fitted onto the outer wall of the first pipe, the fixing ring on the outer wall of the second pipe end is blocked by the side plate inside the sealing sleeve, so that the sealing sleeve will not move or slip off the second pipe.

[0018] The present invention is further configured such that a sealing cap is installed on the top of the gas delivery pipe, and a valve core structure is provided inside the gas delivery pipe.

[0019] Preferably, the operator connects the inflation tube of the digital display airbag inflation pump to the air delivery tube, allowing the pump to inflate the airbag ring with gas. When the operator separates the inflation tube from the air delivery tube, the one-way valve in the valve core structure inside the air delivery tube prevents the gas inflated inside the airbag ring from flowing out.

[0020] The present invention is further configured such that a sealing column is provided inside the sealing cap, and the outer diameter of the sealing column is equal to the inner diameter of the gas transmission pipe, and the sealing cap is connected to the top of the gas transmission pipe by a threaded structure.

[0021] Preferably, when the sealing cap is fitted onto the gas pipeline, the sealing column inside the sealing cap blocks the inside of the gas pipeline.

[0022] The present invention is further configured such that the outer wall of the airbag ring is coated with adhesive with a width of 1mm.

[0023] Preferably, the airbag ring is adhered to the inner wall of the groove by a small amount of glue applied to its outer wall.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model solves the problem of cumbersome operation in the connection, sealing and insulation of traditional heating pipelines by setting up a second pipe, a sealing sleeve, a fixing ring, an air bladder ring and a gas supply pipe. After the steel pipes on the first pipe and the second pipe are welded and fixed, the sealing sleeve on the second pipe is pushed towards the outer wall of the end of the first pipe, so that the sealing sleeve forms a cavity with the first pipe and the second pipe. Gas is filled into the air bladder ring, and the air bladder ring expands to seal the gap between the sealing sleeve and the outer wall of the first pipe. Polyurethane foam liquid is poured into the cavity from the filling pipe to foam and fill the cavity, so that the closed-cell structure formed by the solidification of the polyurethane foam liquid seals and insulates the connection between the first pipe and the second pipe.

[0026] 2. This utility model solves the problem of the sealing sleeve being displaced by the extrusion force generated by the expansion of polyurethane foam by setting a limiting block, a sliding groove, a fixing block, and a slot. When the sealing sleeve is pushed by personnel, the limiting block on the outer wall of the fixing ring limits the movement direction of the sealing sleeve, so that the sealing sleeve is displaced horizontally. When the side plate at one end of the sealing sleeve contacts the fixing ring, the fixing block on the inner wall of the side plate is inserted into the slot inside the fixing ring. The fixing ring is limited by the arrow-shaped fixing block in the slot, so that the sealing sleeve will not be displaced by external force. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0028] Figure 2 This is a schematic diagram of the pipe connection of this utility model;

[0029] Figure 3 This is a structural diagram of the fixing ring of this utility model;

[0030] Figure 4 This is a structural diagram of the sealing sleeve of this utility model;

[0031] Figure 5 This is a schematic diagram of the installation of the connection components of this utility model;

[0032] Figure 6 This is a structural diagram of the sealing cap of this utility model;

[0033] Figure 7 This is a schematic diagram of the sealing sleeve fixing of this utility model;

[0034] Figure 8 This is a schematic diagram of the gas pipeline fixing according to the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. First pipe; 101. Steel pipe; 102. Insulation layer; 103. Sleeve; 104. Second pipe; 2. Fixing ring; 201. Limiting block; 202. Slot; 3. Sealing sleeve; 301. Side plate; 302. Filling pipe; 303. Slide groove; 304. Fixing block; 305. Groove; 4. Airbag ring; 401. Air supply pipe; 402. Sealing cap; 403. Sealing column; 404. Fixing bolt. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] First embodiment: Please refer to Figure 1 — Figure 7The system includes a first pipe 1 and a second pipe 104. Both ends of the second pipe 104 are equipped with connecting components, each including a fixing ring 2 fixedly mounted on the outer wall of the end of the second pipe 104. A sealing sleeve 3 is fitted onto the outer wall of the fixing ring 2, and a filling pipe 302 is installed on the outer wall of the sealing sleeve 3. Side plates 301 are fixed to both sides of the inner side of the sealing sleeve 3. A groove 305 is formed inside one set of side plates 301, and an air bladder ring 4 is installed inside the groove 305. An air supply pipe 401 is installed on the outer wall of the air bladder ring 4. One end of the second pipe 104 is connected to the first pipe 1, thus solving the problem of sealing and heat preservation during traditional heating pipe connections. The process is rather complicated. After the steel pipes 101 on the first pipe 1 and the second pipe 104 are welded and fixed, the personnel push the sealing sleeve 3 on the second pipe 104 toward the outer wall of the end of the first pipe 1, so that the sealing sleeve 3 forms a cavity with the first pipe 1 and the second pipe 104. Gas is then injected into the airbag ring 4, and the airbag ring 4 expands to seal and block the gap between the sealing sleeve 3 and the outer wall of the first pipe 1. Polyurethane foam liquid is poured back into the cavity from the filling pipe 302 to foam and fill the cavity, so that the closed-cell structure formed by the solidification of the polyurethane foam liquid seals and insulates the connection between the first pipe 1 and the second pipe 104.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The first pipe 1 and the second pipe 104 are respectively provided with a steel pipe 101, an insulation layer 102 and a pipe sleeve 103. The steel pipe 101 is used to transport high-temperature media. The polyurethane insulation layer 102 wrapped around the steel pipe 101 insulates the steel pipe 101. The polyethylene sleeve 103 protects the first pipe 1 and the second pipe 104 as a whole.

[0041] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 Four sets of limiting blocks 201 are fixed on the outer wall of the fixing ring 2, and a sliding groove 303 is opened on the inner wall of the sealing sleeve 3. When the personnel push the sealing sleeve 3, the limiting blocks 201 on the outer wall of the fixing ring 2 limit the movement direction of the sealing sleeve 3, so that the sealing sleeve 3 is horizontally displaced.

[0042] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 and Figure 7 Four sets of fixing blocks 304 are fixedly installed on the inner wall of the side plate 301, and four sets of slots 202 are opened on one side of the outer wall of the fixing ring 2. When the side plate 301 at one end of the sealing sleeve 3 contacts the fixing ring 2, the fixing block 304 on the inner wall of the side plate 301 is inserted into the slot 202 inside the fixing ring 2.

[0043] For details regarding the above embodiments, please refer to [link / reference]. Figure 7The cross-section of the slot 202 is T-shaped, and the fixing block 304 is arrow-shaped. The fixing ring 2 is limited in the slot 202 by the fixing block 304 with arrow-shaped structure, so that the sealing sleeve 3 will not be displaced by external force.

[0044] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 The inner diameter of the side plate 301 is equal to the outer diameter of the first pipe 1. When one end of the sealing sleeve 3 is fitted onto the outer wall of the first pipe 1, the fixing ring 2 on the outer wall of the end of the second pipe 104 is blocked by the side plate 301 inside the sealing sleeve 3, so that the sealing sleeve 3 will not move or slip off the second pipe 104.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 5 A sealing cap 402 is installed on the top of the air supply pipe 401. The air supply pipe 401 has a valve core structure inside. By connecting the inflation pipe of the digital display airbag inflation pump to the air supply pipe 401, the air pump can inflate the airbag ring 4. When the air pump inflation pipe is separated from the air supply pipe 401, the one-way valve in the valve core structure inside the air supply pipe 401 prevents the gas inflated inside the airbag ring 4 from flowing out.

[0046] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 and Figure 6 The sealing cap 402 has a sealing column 403 inside, and the outer diameter of the sealing column 403 is equal to the inner diameter of the gas transmission pipe 401. The sealing cap 402 is connected to the top of the gas transmission pipe 401 by a threaded structure. When the sealing cap 402 is fitted on the gas transmission pipe 401, the sealing column 403 inside the sealing cap 402 blocks the inside of the gas transmission pipe 401.

[0047] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 and Figure 5 A 1mm wide adhesive is applied to the outer wall of the airbag ring 4, and the airbag ring 4 adheres to the inner wall of the groove 305 through the small amount of adhesive applied to its outer wall.

[0048] Second embodiment: Please refer to Figure 8 The fixing bolt 404 is fitted onto the end of the air supply pipe 401 that is exposed to the outside of the sealing sleeve 3. The fixing bolt 404 fixes the air supply pipe 401 so that the air supply pipe 401 will not slip into the sealing sleeve 3 due to the weight of the airbag 4.

[0049] In practical operation, when connecting the first pipe 1 and the second pipe 104, the personnel first peel off the polyurethane insulation layer 102 and the polyethylene sleeve 103 at the connection of the first pipe 1 and the second pipe 104, exposing a section of the steel pipe 101 at the connection of the first pipe 1 and the second pipe 104. Then, the personnel use grinding and rust removal equipment to remove iron filings and dirt from the outer wall of the steel pipe 101 inside the first pipe 1 and the second pipe 104. After the steel pipe 101 is cleaned, the personnel use electric welding equipment to weld and fix the steel pipe 101 connecting the ends of the first pipe 1 and the second pipe 104.

[0050] After the steel pipes 101 connecting the ends of the first pipe 1 and the second pipe 104 are welded, the outer wall of the sleeve 103 of the first pipe 1, the inner wall of the sealing sleeve 3, and the insulation layer 102 and the inner wall of the sleeve 103 that have been peeled off from the first pipe 1 and the second pipe 104 are cleaned. Then, the sealing sleeve 3 fitted on the end of the second pipe 104 is pushed horizontally towards the first pipe 1. When the arrow-shaped fixing block 304 on one side plate 301 of the sealing sleeve 3 contacts the fixing ring 2 on the outer wall of the end of the second pipe 104, as the sealing sleeve 3 continues to move, because the port size of the slot 202 set on one side of the fixing ring 2 is smaller than that of the stainless steel fixing block 304, the port wall of the slot 202 extends to both sides of the end of the fixing block 304 and squeezes and contracts, so that the arrow-shaped fixing block 304... 4 can be inserted into the slot 202 on one side of the fixing ring 2. When the fixing block 304 is fully inserted into the slot 202, the extension parts on both sides of the end of the fixing block 304 are stretched and restored to their original state, so that the sealing sleeve 3 is securely fitted at the connection between the first pipe 1 and the second pipe 104. Then, the inflation pipe of the digital display airbag inflation pump is threadedly connected to the air supply pipe 401. The digital display airbag inflation pump inflates the airbag ring 4 installed inside the sealing sleeve 3 through the air supply pipe 401. The volume of the airbag ring 4 increases with the increase of the internal air pressure, so that the airbag ring 4 seals and blocks the groove 305 inside the sealing sleeve 3 and the gap between the side plate 301 at one end of the sealing sleeve 3 and the first pipe 1. Then, the sealing cap 402 is threadedly rotated and fitted onto the top of the air supply pipe 401.

[0051] Finally, the polyurethane foam liquid is poured into the sealing sleeve 3 through the filling pipe 302 at the top of the outer wall of the sealing sleeve 3. When the polyurethane foam liquid is poured into the sealing sleeve 3, the polyurethane foam liquid slowly expands and foams to solidify, sealing and filling the cavity formed between the sealing sleeve 3 and the first pipe 1 and the second pipe 104. The closed-cell structure formed after the polyurethane foam liquid is cured has no continuous pores inside, so that the cured urethane foam material can seal and insulate the connection between the first pipe 1 and the second pipe 104.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A heating pipe connection structure, comprising a first pipe (1) and a second pipe (104), characterized in that: Both ends of the second pipe (104) are provided with connecting components. The connecting components include a fixing ring (2), and the fixing ring (2) is fixedly installed on the outer wall of the end of the second pipe (104). The outer wall of the fixing ring (2) is fitted with a sealing sleeve (3). The outer wall of the sealing sleeve (3) is provided with a filling pipe (302). Both sides of the inner side of the sealing sleeve (3) are fixed with side plates (301). A groove (305) is opened in the inner side of a set of side plates (301). An airbag ring (4) is provided in the inner side of the groove (305). An air supply pipe (401) is installed on the outer wall of the airbag ring (4). One end of the second pipe (104) is connected to the first pipe (1).

2. The heating pipe connection structure according to claim 1, characterized in that: The first pipe (1) and the second pipe (104) are respectively provided with a steel pipe (101), an insulation layer (102) and a pipe sleeve (103).

3. The heating pipe connection structure according to claim 1, characterized in that: The outer wall of the fixing ring (2) is fixed with four sets of limiting blocks (201), and the inner wall of the sealing sleeve (3) is provided with a sliding groove (303).

4. The heating pipe connection structure according to claim 1, characterized in that: The inner wall of the side plate (301) is fixedly installed with four sets of fixing blocks (304), and the outer wall of the fixing ring (2) is provided with four sets of slots (202).

5. A heating pipe connection structure according to claim 4, characterized in that: The cross-section of the slot (202) is T-shaped, and the fixing block (304) is arrow-shaped.

6. A heating pipeline connection structure according to claim 1, characterized in that: The inner diameter of the side plate (301) is equal to the outer diameter of the first pipe (1).

7. A heating pipe connection structure according to claim 1, characterized in that: A sealing cap (402) is installed on the top of the gas supply pipe (401), and a valve core structure is provided inside the gas supply pipe (401).

8. A heating pipeline connection structure according to claim 7, characterized in that: The sealing cap (402) is provided with a sealing column (403) inside, and the outer diameter of the sealing column (403) is equal to the inner diameter of the gas transmission pipe (401). The sealing cap (402) is connected to the top of the gas transmission pipe (401) by a threaded structure.

9. A heating pipe connection structure according to claim 1, characterized in that: The outer wall of the airbag ring (4) is coated with glue with a width of 1 mm.

10. A heating pipe connection structure according to claim 1, characterized in that: A fixing bolt (404) is installed on the top of the gas pipe (401), and the fixing bolt (404) is connected to the gas pipe (401) by a threaded structure.

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