A new type of low temperature and high pressure pipeline insulation heating device
By adopting a new low-temperature and high-pressure pipeline insulation heating device in the polyurea or polyurethane spraying industry, and using electrical heating fittings and conductive connection block design, the construction and maintenance problems of heating and insulation of long-distance feeding pipelines are solved, efficient heating of the pipeline and simplified connection process are achieved, and the quality and efficiency of spraying operations are ensured.
Patent Information
- Application Number
- CN202421255858.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-04
AI Technical Summary
In the polyurea or polyurethane spraying industry, the heating and insulation problems of long-distance feed pipes under harsh environmental conditions are difficult, construction difficulties, maintenance workload, complex connection of resistance wires, difficulty in insulation protection, and complexity in daily use in the prior art.
The new low-temperature and high-pressure pipeline insulation heating device is adopted, including electrical heating pipe fittings and conductive connection blocks. The heating pipe fittings used in industries such as polyurea or polyurethane are used. The connection process of the pipeline is simplified through the conductive connection block and the crimped pipe joint design, forming a safe closed electrical heating system.
It effectively solves the construction and maintenance problems of heating and insulation of long-distance feeding pipelines, simplifies the connection process, reduces the complexity of daily use, ensures efficient heating of the pipelines, and ensures the quality and efficiency of spraying operations.
Smart Images
Figure CN222746875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating a feed pipeline, in particular to a novel low-temperature and high-pressure pipeline heat preservation and heating device. Background Art
[0002] In the spraying industry of polyurea or polyurethane and other related industries, the spraying equipment used is composed of multiple key components, including booster pumps, spray guns, feed pumps and feed pipes. In order to maintain the fluidity of the material and reduce its viscosity, the feed pipe usually needs to be heated or insulated during operation. The temperature is generally controlled within a low temperature range of no more than 80 degrees Celsius, especially in winter or outdoor environments with low temperatures. Maintaining the temperature of the pipe is even more important. Since spraying equipment is often used outdoors, the length of the feed pipe may be as long as tens of meters. How to effectively heat the pipe has become a technical challenge.
[0003] At present, the heating method commonly used in the industry is to wrap the resistance wire around the outside of the pipeline and wrap the insulation layer around the resistance wire to ensure safety. However, when the pipeline is long and needs to be connected in multiple sections, not only does the connection of the resistance wire become complicated, but it is also necessary to ensure the insulation protection of the connection points, which undoubtedly increases the difficulty of construction and the workload of maintenance. The winding of the resistance wire and the laying of the insulation layer are cumbersome and time-consuming, and there is also a certain degree of complexity in daily use.
[0004] Based on this, we propose a new type of low-temperature and high-pressure pipeline insulation and heating device to solve the above-mentioned problems. Utility Model Content
[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.
[0006] Therefore, the purpose of the utility model is to provide a new low-temperature and high-pressure pipeline insulation and heating device, which can solve the problems of difficult construction, heavy maintenance workload, complex resistance wire connection, difficult insulation protection and complexity of daily use in the heating process of the feed pipeline in the polyurea or polyurethane spraying industry.
[0007] In order to solve the above technical problems, the utility model provides a novel low-temperature and high-pressure pipeline insulation heating device, which adopts the following technical solution: comprising an electric heating pipe fitting and a conductive connecting block, the conductive connecting block is installed between one ends of two groups of electric heating pipe fittings, the electric heating pipe fitting comprises a first heating pipe and a second heating pipe used in the spraying process of related industries such as polyurea or polyurethane, and the second heating pipe is arranged on one side of the first heating pipe;
[0008] The first heating tube is composed of a plurality of groups of positive electrode hoses spliced end to end, one end of the positive electrode hose is installed with a positive electrode connected to a power source, and the end of the positive electrode hose away from the positive electrode of the power source is installed with a first fixed end;
[0009] The second heating tube is composed of multiple groups of negative electrode hoses spliced end to end, one end of the negative electrode hose is installed with a negative electrode of the power supply, and the end of the negative electrode hose away from the negative electrode of the power supply is installed with a second fixed end.
[0010] By adopting the above technical scheme, the new low-temperature and high-pressure pipeline insulation and heating technology of this patent effectively solves the heating and insulation problem of long-distance feed pipelines in the polyurea or polyurethane spraying industry under harsh environmental conditions through innovative design. The improvement of this technology is that it replaces the traditional resistance wire heating method, which effectively reduces the problems of construction difficulties, time-consuming and labor-intensive, as well as the complexity of daily use. This scheme uses the commonly used steel wire winding hose in the market, with multiple layers of steel wire braiding between the inner and outer layers, which can efficiently transfer and distribute heat energy, and at the same time has high pressure tolerance, avoiding the safety hazards in traditional heating methods. The hose is easy to process and easy to purchase. With the design of conductive rings and crimping pipe joints, the pipeline connection process is simplified, making installation faster. Long pipelines are easily connected through crimping pipe joints, and the insulation treatment of the connection points makes the entire pipeline form a safe closed electric heating system, and finally the pipeline is efficiently heated through a low-voltage power supply, ensuring the fluidity and temperature conditions of the polymer material during the transportation process, thereby ensuring the quality and efficiency of the spraying operation.
[0011] Optionally, both ends of the positive electrode hose and the negative electrode hose are respectively provided with material inlets.
[0012] By adopting the above technical solution, the present solution uses material inlets respectively opened at both ends of the positive electrode hose and the negative electrode hose for the inflow and discharge of spraying materials (such as polyurea or polyurethane).
[0013] Optionally, an extended connection structure is respectively arranged between the two groups of positive electrode hoses and the two groups of negative electrode hoses, and the extended connection structure includes a hose connector, which is installed at both ends of the positive electrode hose and the negative electrode hose, and one end of the hose connector is also connected to a first extended pipe head.
[0014] By adopting the above technical solution, the present solution uses a first extension pipe head installed at one end of the hose connector to connect the two groups of positive hoses and the two groups of negative hoses end to end.
[0015] Optionally, a second extension tube head is connected between the two groups of the first extension tube heads.
[0016] By adopting the above technical solution, the present solution can connect two groups of positive electrode hoses and two groups of negative electrode hoses end to end by installing a second extension tube head between two groups of first extension tube heads.
[0017] Optionally, the extended connection structure further includes an insulating layer, and the insulating layer is sleeved and connected to the outside of the hose connector, the first extended tube head and the second extended tube head.
[0018] By adopting the above technical solution, this solution can effectively improve the stability of the end-to-end connection of two groups of positive hoses and two groups of negative hoses through the insulating layer sheathed on the outside of the hose connector, the first extension tube head and the second extension tube head, and at the same time, it can also avoid electrical short circuits between the hose connector, the first extension tube head and the second extension tube head connected in series.
[0019] Optionally, the hose connector includes an outer layer, and an inner layer is arranged inside the outer layer.
[0020] By adopting the above technical solution, this solution can ensure that the heat conducted from the heating pipe to the material can be effectively carried out by installing an inner layer inside the outer layer, and the material can be kept at a necessary high temperature state, which is crucial for the fluidity and spraying effect of the material.
[0021] Optionally, the outer layer is made of rubber or PU material, and the inner layer is made of nylon material.
[0022] By adopting the above technical scheme, the outer layer in this scheme is composed of rubber or PU material. Rubber and PU as the outer layer material of the hose have good wear resistance, tensile resistance and elasticity. These materials can effectively resist external impact and friction, and improve the durability and durability of the hose joint. In this scheme, the inner layer is made of nylon material. Nylon has excellent chemical stability and can resist the corrosion of the pipeline system by chemical components that may be contained in the spraying material.
[0023] Optionally, a conductive ring is installed inside one end of the outer layer, and a steel wire mesh is laid between the inner layer and the outer layer. The conductive ring, the steel wire mesh and the hose connector are in contact with each other. The hose connector, the first extension tube head and the second extension tube head are all made of steel material. A heating circuit is formed between the hose connector, the first extension tube head, the second extension tube head and the steel wire mesh.
[0024] By adopting the above technical scheme, this scheme can play a conductive role for the end of the steel wire mesh laid between the inner layer and the outer layer by installing a conductive ring inside one end of the outer layer, and can connect the hose connector, the first extension tube head, the second extension tube head and the steel wire mesh in series to form a heating circuit for material insulation.
[0025] In summary, the utility model includes at least one of the following beneficial effects: the new low-temperature and high-pressure pipeline insulation and heating technology of this patent effectively solves the heating and insulation problem of long-distance feed pipelines in the polyurea or polyurethane spraying industry under harsh environmental conditions through innovative design. The improvement of this technology is that it replaces the traditional resistance wire heating method, which effectively reduces the problems of construction difficulties, time-consuming and labor-intensive, as well as the complexity of daily use. This solution uses the commonly used steel wire winding hose in the market, with multiple layers of steel wire braided between the inner and outer layers, which can efficiently transfer and distribute heat energy, and at the same time has high pressure tolerance, avoiding the safety hazards in traditional heating methods. The hose is easy to process and easy to purchase. With the design of conductive rings and crimping pipe joints, the connection process of the pipeline is simplified, making installation faster. Long pipelines are easily connected through crimping pipe joints, and the insulation treatment of the connection points makes the entire pipeline form a safe closed electric heating system. Finally, the pipeline is efficiently heated by a low-voltage power supply, ensuring the fluidity and temperature conditions of the polymer material during the transportation process, thereby ensuring the quality and efficiency of the spraying operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0028] Figure 2 This is a schematic diagram of the structure of the first heating tube of the utility model;
[0029] Figure 3 This is a schematic diagram of the structure of the second heating tube of the utility model;
[0030] Figure 4 This is a schematic diagram of the extended connection structure of the utility model;
[0031] Figure 5 This is a schematic diagram of the hose connector structure of the utility model.
[0032] Explanation of the reference numerals: 100, electric heating pipe fitting; 101, first heating pipe; 101a, positive electrode hose; 101b, positive electrode of power supply; 101c, first fixed end; 102, second heating pipe; 102a, negative electrode hose; 102a-1, material inlet; 102b, negative electrode of power supply; 102c, second fixed end; 200, conductive connecting block; 300, extended connecting structure; 301, hose connector; 301a, outer layer; 301a-1, conductive ring; 301b, inner layer; 301b-1, steel wire braid; 302, first extended pipe head; 302a, second extended pipe head; 303, insulating layer. DETAILED DESCRIPTION
[0033] The following is combined with Figure 1-5 The utility model is described in further detail.
[0034] Embodiment 1, refer to Figure 1-3 The utility model discloses a novel low-temperature and high-pressure pipeline insulation and heating device.
[0035] The electric heating pipe fitting 100 and the conductive connecting block 200 are installed between one end of two sets of electric heating pipe fittings 100. The electric heating pipe fitting 100 includes a first heating pipe 101 and a second heating pipe 102 used in the spraying process of related industries such as polyurea or polyurethane. The second heating pipe 102 is arranged on one side of the first heating pipe 101.
[0036] The first heating tube 101 is composed of a plurality of positive hoses 101a connected end to end, one end of the positive hose 101a is provided with a positive pole 101b connected to a power source, and the end of the positive hose 101a away from the positive pole 101b is provided with a first fixed end 101c;
[0037] The second heating tube 102 is composed of multiple groups of negative hoses 102a spliced end to end. One end of the negative hose 102a is installed with a negative power supply 102b, and the end of the negative hose 102a away from the negative power supply 102b is installed with a second fixed end 102c.
[0038] Material inlets 102a-1 are respectively provided at both ends of the positive hose 101a and the negative hose 102a, and the spraying material (such as polyurea or polyurethane) is allowed to flow in and out through the material inlets 102a-1 respectively provided at both ends of the positive hose 101a and the negative hose 102a.
[0039] Example 2, refer to Figure 3-4In order to solve the problems of difficult construction, heavy maintenance workload, complex resistance wire connection, difficult insulation protection and complexity of daily use in the heating process of the feed pipe in the polyurea or polyurethane spraying industry, based on the same concept as the above-mentioned embodiment 1, the novel low-temperature and high-pressure pipe insulation heating device also includes:
[0040] An extended connection structure 300 is respectively arranged between the two groups of positive hoses 101a and the two groups of negative hoses 102a. The extended connection structure 300 includes a hose connector 301. The hose connector 301 is installed at both ends of the positive hose 101a and the negative hose 102a. One end of the hose connector 301 is also connected to a first extended tube head 302. The first extended tube head 302 installed at one end of the hose connector 301 is used to connect the two groups of positive hoses 101a and the two groups of negative hoses 102a end to end.
[0041] A second extension tube head 302a is connected between the two groups of first extension tube heads 302. By installing the second extension tube head 302a between the two groups of first extension tube heads 302, two groups of positive electrode hoses 101a and two groups of negative electrode hoses 102a can be connected end to end.
[0042] The extended connection structure 300 also includes an insulating layer 303, which is sleeved and connected to the outside of the hose connector 301, the first extended tube head 302 and the second extended tube head 302a. By sleeved on the outside of the hose connector 301, the first extended tube head 302 and the second extended tube head 302a, the stability of the end-to-end connection of the two groups of positive hoses 101a and the two groups of negative hoses 102a can be effectively improved, and at the same time, the electrical short circuit between the series-connected hose connector 301, the first extended tube head 302 and the second extended tube head 302a can be avoided.
[0043] Example 3, refer to Figure 4-5 In order to solve the problems of difficult construction, heavy maintenance workload, complex resistance wire connection, difficult insulation protection and complexity of daily use in the heating process of the feed pipe in the polyurea or polyurethane spraying industry, based on the same concept as the above-mentioned embodiment 1, the novel low-temperature and high-pressure pipe insulation heating device also includes:
[0044] The hose connector 301 includes an outer layer 301a, and an inner layer 301b is arranged inside the outer layer 301a. By installing the inner layer 301b inside the outer layer 301a, it can be ensured that the heat transferred from the heating pipe to the material can be effectively carried out to keep the material at the necessary high temperature state, which is crucial to the fluidity and spraying effect of the material.
[0045] The outer layer 301a is made of rubber or PU material, and the inner layer 301b is made of nylon material. In this solution, the outer layer 301a is made of rubber or PU material. Rubber and PU, as the outer layer materials of the hose, have good wear resistance, tensile resistance and elasticity. These materials can effectively resist external impact and friction, and improve the durability and durability of the hose joint. In this solution, the inner layer 301b is made of nylon material. Nylon has excellent chemical stability and can resist the corrosion of the pipeline system by chemical components that may be contained in the spraying material.
[0046] A conductive ring 301a-1 is installed inside one end of the outer layer 301a, and the conductive ring 301a-1 is in contact with the steel wire mesh 301b-1 and the hose connector 301. The hose connector 301, the first extension tube head 302, and the second extension tube head 302a are all made of steel material. A heating circuit is formed between the hose connector 301, the first extension tube head 302, the second extension tube head 302a and the steel wire mesh 301b-1. The conductive ring 301a-1 installed inside one end of the outer layer 301a can play a conductive role for the end of the steel wire mesh 301b-1 laid between the inner layer 301b and the outer layer 301a, and the hose connector 301, the first extension tube head 302, the second extension tube head 302a and the steel wire mesh 301b-1 can be connected in series to form a heating circuit for material insulation.
[0047] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A novel low-temperature and high-pressure pipeline insulation and heating device, comprising an electric heating pipe (100) and a conductive connecting block (200), wherein the conductive connecting block (200) is installed between one end of two groups of electric heating pipes (100), characterized in that: The electric heating pipe (100) comprises a first heating pipe (101) and a second heating pipe (102) used in a spraying process in polyurea or polyurethane related industries, wherein the second heating pipe (102) is arranged on one side of the first heating pipe (101); The first heating tube (101) is composed of a plurality of groups of positive electrode hoses (101a) connected end to end, one end of the positive electrode hose (101a) is installed with a positive electrode (101b) connected to a power source, and the end of the positive electrode hose (101a) away from the positive electrode (101b) of the power source is installed with a first fixed end (101c); The second heating tube (102) is composed of a plurality of groups of negative electrode hoses (102a) connected end to end, one end of the negative electrode hose (102a) is installed with a negative electrode (102b) connected to the power supply, and the end of the negative electrode hose (102a) away from the negative electrode (102b) is installed with a second fixed end (102c).
2. A novel low-temperature and high-pressure pipeline insulation and heating device according to claim 1, characterized in that: Both ends of the positive electrode hose (101a) and the negative electrode hose (102a) are respectively provided with material inlets (102a-1).
3. A novel low-temperature and high-pressure pipeline insulation and heating device according to claim 2, characterized in that: An extended connection structure (300) is respectively provided between the two groups of positive electrode hoses (101a) and the two groups of negative electrode hoses (102a). The extended connection structure (300) comprises a hose connector (301). The hose connector (301) is installed at both ends of the positive electrode hose (101a) and the negative electrode hose (102a). One end of the hose connector (301) is also connected to a first extended pipe head (302).
4. A novel low-temperature and high-pressure pipeline insulation and heating device according to claim 3, characterized in that: A second extension tube head (302a) is connected between the two groups of the first extension tube heads (302).
5. A novel low-temperature and high-pressure pipeline insulation and heating device according to claim 4, characterized in that: The extended connection structure (300) further comprises an insulating layer (303), wherein the insulating layer (303) is sleeved and connected to the outside of the hose connector (301), the first extended tube head (302) and the second extended tube head (302a).
6. A novel low-temperature and high-pressure pipeline insulation and heating device according to claim 5, characterized in that: The hose connector (301) comprises an outer layer (301a), and an inner layer (301b) is arranged inside the outer layer (301a).
7. A novel low-temperature and high-pressure pipeline insulation and heating device according to claim 6, characterized in that: The outer layer (301a) is made of rubber or PU material, and the inner layer (301b) is made of nylon material.
8. The novel low-temperature and high-pressure pipeline insulation and heating device according to claim 7 is characterized in that: A conductive ring (301a-1) is installed inside one end of the outer layer (301a); a steel wire braided mesh (301b-1) is also laid between the inner layer (301b) and the outer layer (301a); the conductive ring (301a-1), the steel wire braided mesh (301b-1) and the hose connector (301) are all in contact with each other; the hose connector (301), the first extension tube head (302) and the second extension tube head (302a) are all made of steel material; and a heating circuit is formed between the hose connector (301), the first extension tube head (302), the second extension tube head (302a) and the steel wire braided mesh (301b-1).