Directly-buried anti-corrosion thermal insulation pipe

Abstract

The utility model relates to the technical field of thermal insulation pipes, and discloses a direct burial type anti-corrosion thermal insulation pipe which comprises a main body mechanism, a connecting mechanism and a protection mechanism, the main body mechanism comprises an operation pipe, a first supporting column, a damping assembly, a second supporting column and an outer supporting steel pipe, and the damping assembly is fixedly installed at the end, away from the operation pipe, of the first supporting column; the second supporting column is fixedly installed at the end, away from the first supporting column, of the damping assembly, and the outer supporting steel pipe is fixedly installed at the end, away from the damping assembly, of the second supporting column. According to the direct-buried anti-corrosion heat preservation pipe, the operation pipe is connected with the outer supporting steel pipe through the first supporting column, the damping assembly and the second supporting column, so that the outer wall of the operation pipe is sequentially filled with heat preservation and heat insulation materials to form the heat preservation pipe, when a heat medium circulates in the inner wall of the operation pipe, the operation pipe is stressed to expand, and generated stress is absorbed by the damping assembly; therefore, the inner thermal insulation material is prevented from being damaged due to stress deformation, and the thermal insulation performance is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation pipes, in particular to a directly buried anti-corrosion thermal insulation pipe. Background Art

[0002] Insulated pipes are widely used in liquid and gas transportation pipelines, chemical pipeline insulation projects, petroleum, chemical industry, central heating network, central air-conditioning ventilation ducts, municipal engineering, etc. High-temperature prefabricated direct-buried insulated pipes are a kind of direct-buried prefabricated insulated pipes with good thermal insulation performance, high safety and reliability, and low project cost.

[0003] For example, announcement number CN210128182U discloses a direct-buried polyurethane anti-corrosion thermal insulation pipe, which drives multiple groups of bristles to move up and down reciprocatingly through the rotation of a motor, thereby cleaning up impurities on the left wall of the first filter screen, making the thermal insulation pipe have an anti-blocking effect; for example, application number CN202220698732.2 discloses a prefabricated direct-buried integrated thermal insulation pipe with anti-corrosion function, which moves with the linkage annular sealing sleeve, driving the annular sealing sleeve to perform external reinforcement sealing on the pipe connection to avoid leakage at the connection, thereby further improving the anti-corrosion performance of the pipe body itself.

[0004] However, when the insulation pipe is in operation, it will expand due to the heat medium flowing on the inner wall. When the insulation pipe expands, the internal stress will pass through the insulation pipe and cause pressure on the outer insulation material, which may easily cause the insulation material to break, greatly reduce the insulation effect, and cause the heat of the heat medium itself to be lost quickly. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide a directly buried anti-corrosion thermal insulation pipe to solve the problem proposed in the above background technology that the thermal insulation pipe will expand due to the heat medium flowing on the inner wall during operation. When the thermal insulation pipe expands, the internal stress will cause stamping on the outer layer of the thermal insulation material through the thermal insulation pipe, which may easily cause the thermal insulation material to break, greatly attenuate the thermal insulation effect, and cause the heat of the thermal medium itself to be lost quickly.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a directly buried anti-corrosion and thermal insulation pipe, comprising a main body structure, a connecting structure and a protective structure, wherein the connecting structure is located at the inner end of the main body structure, and the protective structure is located at the outer end of the main body structure, the main body structure comprises an operating pipe, a first support column, a shock absorbing assembly, a second support column and an external supporting steel pipe, the first support column is fixedly mounted on the outer end of the operating pipe, the shock absorbing assembly is fixedly mounted on an end of the first support column away from the operating pipe, the second support column is fixedly mounted on an end of the shock absorbing assembly away from the first support column, and the external supporting steel pipe is fixedly mounted on an end of the second support column away from the shock absorbing assembly.

[0009] Preferably, the shock absorbing assembly includes a telescopic rod, a damper, an elastic member and a vacuum chamber, the telescopic rod is fixedly mounted on the inner end of the shock absorbing assembly support shell and is connected to the first support column or the second support column; the damper is movably mounted on the outer end of the telescopic rod, the elastic member is fixedly mounted on the outer end of the damper, and the vacuum chamber is fixedly arranged inside the shock absorbing assembly support shell.

[0010] Preferably, the connecting mechanism comprises aluminum foil, glass wool, glass fiber cloth, aluminum silicate wool, rock wool and waterproof and anti-oxidation coating, and the aluminum foil is fixedly mounted on the outer end of the working pipe.

[0011] Preferably, the glass wool is fixedly mounted on the outer end of the aluminum foil, the glass fiber cloth is fixedly mounted on the outer end of the glass wool, and the aluminum silicate wool is fixedly mounted on the outer end of the aluminum foil.

[0012] Preferably, the rock wool is fixedly mounted on the outer end of the aluminum silicate wool, and the waterproof and anti-oxidation coating is fixedly sprayed on the inner wall of the working pipe.

[0013] Preferably, the protective mechanism comprises an air interlayer and an outer protective layer, the air interlayer is fixedly arranged between the rock wool and the outer supporting steel pipe, and the outer protective layer is fixedly arranged at the outer end of the outer supporting steel pipe.

[0014] Preferably, the outer protective layer includes an anti-corrosion primer and an epoxy coal tar topcoat, the anti-corrosion primer is fixedly sprayed on the outer end of the outer supporting steel pipe, and the epoxy coal tar topcoat is fixedly sprayed on the outer surface of the anti-corrosion primer.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The directly buried anti-corrosion thermal insulation pipe is fixedly installed by the main body mechanism, and the working pipe is connected to the outer supporting steel pipe through the first supporting column, the shock absorbing assembly and the second supporting column, so that the outer wall of the working pipe is filled with thermal insulation materials in sequence to form a thermal insulation pipe. When the inner wall of the working pipe flows through the heat medium, the working pipe expands under force, and the stress generated is absorbed by the shock absorbing assembly, thereby preventing the internal thermal insulation material from being deformed due to force, resulting in damage and affecting the thermal insulation performance;

[0017] 2. The direct-buried anti-corrosion insulation pipe is fixedly installed through the connection mechanism. When the operating pipe flows with heat medium, the high-temperature radiation generated is reflected by the aluminum foil, which reduces the temperature loss of the heat medium caused by heat radiation. The temperature of heat transfer is insulated by glass wool, aluminum silicate wool and rock wool in turn. Multiple insulation materials ensure that the heat loss of the heat medium is minimized, effectively improving the stability of the insulation pipe operation;

[0018] 3. The direct-buried anti-corrosion thermal insulation pipe is fixedly installed through a protective mechanism. The outer surface of the outer supporting steel pipe is pre-treated with an anti-corrosion primer, and then epoxy coal tar topcoat is sprayed on both sides through an adhesive, so that the outer supporting steel pipe has a high-strength anti-corrosion effect. At the same time, the internal structural parts of the outer supporting steel pipe are prevented from being eroded by groundwater, thereby extending the service life of the thermal insulation pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a partial cross-sectional structural diagram of the main mechanism of the utility model;

[0021] Figure 3 It is a partial cross-sectional structural diagram of the main mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the protection mechanism of the utility model;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the connecting mechanism of the utility model.

[0024] In the figure: 1. Main body; 101. Working pipe; 102. First support column; 103. Shock absorbing assembly; 1031. Telescopic rod; 1032. Damper; 1033. Elastic member; 1034. Vacuum chamber; 104. Second support column; 105. External support steel pipe; 2. Connecting mechanism; 201. Aluminum foil; 202. Glass wool; 203. Glass fiber cloth; 204. Aluminum silicate wool; 205. Rock wool; 206. Waterproof and anti-oxidation coating; 3. Protective mechanism; 301. Air interlayer; 302. External protective layer; 303. Anti-corrosion primer; 304. Epoxy coal tar topcoat. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 The utility model provides a technical solution: a directly buried anti-corrosion and thermal insulation pipe, comprising a main body mechanism 1, a connecting mechanism 2 and a protective mechanism 3, the connecting mechanism 2 is located at the inner end of the main body mechanism 1, the protective mechanism 3 is located at the outer end of the main body mechanism 1, the main body mechanism 1 comprises an operating pipe 101, a first support column 102, a shock absorbing assembly 103, a second support column 104 and an outer supporting steel pipe 105, the first support column 102 is fixedly mounted on the outer end of the operating pipe 101, the shock absorbing assembly 103 is fixedly mounted on the end of the first support column 102 away from the operating pipe 101, the second support column 104 is fixedly mounted on the end of the shock absorbing assembly 103 away from the first support column 102, the outer supporting steel pipe 105 is fixedly mounted on the end of the second support column 104 away from the shock absorbing assembly 103, the shock absorbing assembly 103 comprises a telescopic rod 1031, a damper 1032, an elastic member 1 033 and vacuum chamber 1034, the telescopic rod 1031 is fixedly installed on the inner end of the support shell of the shock absorbing assembly 103, and is connected to the first support column 102 or the second support column 104; the damper 1032 is movably installed on the outer end of the telescopic rod 1031, the elastic member 1033 is fixedly installed on the outer end of the damper 1032, and the vacuum chamber 1034 is fixedly arranged inside the support shell of the shock absorbing assembly 103. The working pipe 101 is connected to the outer supporting steel pipe 105 through the first support column 102, the shock absorbing assembly 103 and the second support column 104, so that the outer wall of the working pipe 101 is filled with thermal insulation materials in turn to form an insulation pipe. When the inner wall of the working pipe 101 flows with heat medium, the working pipe 101 is expanded by force, and the stress generated is absorbed by the shock absorbing assembly 103, thereby preventing the internal insulation material from being deformed due to force, resulting in damage and affecting the insulation performance.

[0027] The connecting mechanism 2 includes aluminum foil 201, glass wool 202, glass fiber cloth 203, aluminum silicate wool 204, rock wool 205 and waterproof anti-oxidation coating 206. The aluminum foil 201 is fixedly mounted on the outer end of the working pipe 101, the glass wool 202 is fixedly mounted on the outer end of the aluminum foil 201, the glass fiber cloth 203 is fixedly mounted on the outer end of the glass wool 202, the aluminum silicate wool 204 is fixedly mounted on the outer end of the aluminum foil 201, and the rock wool 205 is fixedly mounted on the outer end of the aluminum silicate wool 204. The waterproof anti-oxidation coating 206 is fixedly sprayed on the inner wall of the working pipe 101. When the working pipe 101 flows through the heat medium, the high temperature radiation generated is reflected by the aluminum foil 201, so as to reduce the temperature loss of the heat medium caused by the heat radiation. The temperature of the heat transfer is insulated and heat-insulated by the glass wool 202, the aluminum silicate wool 204 and the rock wool 205 in turn. The multiple insulation materials ensure that the heat loss of the heat medium is minimized.

[0028] The protective mechanism 3 includes an air interlayer 301 and an outer protective layer 302. The air interlayer 301 is fixedly arranged between the rock wool 205 and the outer supporting steel pipe 105. The outer protective layer 302 is fixedly arranged at the outer end of the outer supporting steel pipe 105. The outer protective layer 302 includes an anti-corrosion primer 303 and an epoxy coal tar topcoat 304. The anti-corrosion primer 303 is fixedly sprayed on the outer end of the outer supporting steel pipe 105. The epoxy coal tar topcoat 304 is fixedly sprayed on the outer surface of the anti-corrosion primer 303. The outer surface of the outer supporting steel pipe 105 is pre-treated with the anti-corrosion primer 303, and then the epoxy coal tar topcoat 304 is sprayed on both sides through an adhesive, so that the outer supporting steel pipe 105 has a high-strength anti-corrosion effect, while preventing the internal structural parts of the outer supporting steel pipe 105 from being corroded by groundwater.

[0029] Working principle: The working pipe 101 is connected to the outer supporting steel pipe 105 through the first supporting column 102, the shock absorbing assembly 103 and the second supporting column 104, so that the outer wall of the working pipe 101 is filled with thermal insulation materials in turn to form an insulation pipe. When the inner wall of the working pipe 101 flows with heat medium, the working pipe 101 is forced to expand, and the stress generated is absorbed by the telescopic rod 1031, the elastic member 1033 and the damper 1032 in the shock absorbing assembly 103, thereby preventing the inner insulation material from being deformed due to force, resulting in damage and affecting the insulation performance. At the same time, the vacuum chamber 1034 isolates the first supporting column 102 from the heat medium. The heat is brought by the operating pipe 101. When the operating pipe 101 circulates the heat medium, the high temperature radiation generated is reflected by the aluminum foil 201, which reduces the temperature loss of the heat medium caused by heat radiation. The heat transfer temperature is insulated by glass wool 202, aluminum silicate wool 204 and rock wool 205 in turn. Multiple insulation materials ensure that the heat loss of the heat medium is minimized. The outer surface of the outer supporting steel pipe 105 is pre-treated with an anti-corrosion primer 303, and then the epoxy coal tar topcoat 304 is sprayed on both sides through an adhesive, so that the outer supporting steel pipe 105 has a high-strength anti-corrosion effect, while preventing the internal structural parts of the outer supporting steel pipe 105 from being eroded by groundwater.

[0030] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A directly buried anticorrosion and thermal insulation pipe, comprising a main body (1), a connecting mechanism (2) and a protective mechanism (3), characterized in that: The connecting mechanism (2) is located at the inner end of the main mechanism (1), and the protective mechanism (3) is located at the outer end of the main mechanism (1). The main mechanism (1) comprises an operating pipe (101), a first supporting column (102), a shock absorbing assembly (103), a second supporting column (104) and an outer supporting steel pipe (105). The first supporting column (102) is fixedly mounted on the outer end of the operating pipe (101), the shock absorbing assembly (103) is fixedly mounted on an end of the first supporting column (102) away from the operating pipe (101), the second supporting column (104) is fixedly mounted on an end of the shock absorbing assembly (103) away from the first supporting column (102), and the outer supporting steel pipe (105) is fixedly mounted on an end of the second supporting column (104) away from the shock absorbing assembly (103).

2. A directly buried anticorrosion and thermal insulation pipe according to claim 1, characterized in that: The shock absorbing assembly (103) comprises a telescopic rod (1031), a damper (1032), an elastic member (1033) and a vacuum chamber (1034); the telescopic rod (1031) is fixedly mounted on the inner end of a support shell of the shock absorbing assembly (103) and is connected to a first support column (102) or a second support column (104); the damper (1032) is movably mounted on the outer end of the telescopic rod (1031); the elastic member (1033) is fixedly mounted on the outer end of the damper (1032); and the vacuum chamber (1034) is fixedly arranged inside the support shell of the shock absorbing assembly (103).

3. The direct buried anticorrosion thermal insulation pipe according to claim 1 is characterized in that: The connecting mechanism (2) comprises aluminum foil (201), glass wool (202), glass fiber cloth (203), aluminum silicate wool (204), rock wool (205) and waterproof and anti-oxidation coating (206); the aluminum foil (201) is fixedly mounted on the outer end of the working pipe (101).

4. A directly buried anticorrosion and thermal insulation pipe according to claim 3, characterized in that: The glass wool (202) is fixedly mounted on the outer end of the aluminum foil (201), the glass fiber cloth (203) is fixedly mounted on the outer end of the glass wool (202), and the aluminum silicate wool (204) is fixedly mounted on the outer end of the aluminum foil (201).

5. A directly buried anticorrosion and thermal insulation pipe according to claim 4, characterized in that: The rock wool (205) is fixedly mounted on the outer end of the aluminum silicate wool (204), and the waterproof and anti-oxidation coating (206) is fixedly sprayed on the inner wall of the working pipe (101).

6. The direct buried anticorrosion thermal insulation pipe according to claim 1, characterized in that: The protective mechanism (3) comprises an air interlayer (301) and an outer protective layer (302), wherein the air interlayer (301) is fixedly arranged between the rock wool (205) and the outer supporting steel pipe (105), and the outer protective layer (302) is fixedly arranged at the outer end of the outer supporting steel pipe (105).

7. A directly buried anticorrosion and thermal insulation pipe according to claim 6, characterized in that: The outer protective layer (302) includes an anti-corrosion primer (303) and an epoxy coal tar topcoat (304), wherein the anti-corrosion primer (303) is fixedly sprayed on the outer end of the outer supporting steel pipe (105), and the epoxy coal tar topcoat (304) is fixedly sprayed on the outer surface of the anti-corrosion primer (303).

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