Anti-freezing device of heat supply pipe network

Abstract

The utility model belongs to the technical field of anti-freezing of heat supply pipe networks, and discloses an anti-freezing device of a heat supply pipe network, which comprises a fixing device used for fixing the anti-freezing device outside a pipeline, and a heating device used for heat preservation and heating for anti-freezing is arranged in the fixing device. The heat preservation device is arranged between the fixing device and the heating device and is used for double-layer vacuum heat insulation and heat preservation and a crisscross closed interface; the heat preservation device comprises a first sleeve, the first sleeve is of a front-and-back half structure, a first vacuum chamber is formed in the first sleeve, and a second sleeve is installed on the outer wall of the first sleeve. According to the anti-freezing device of the heat supply pipe network, due to the arrangement of vacuum heat insulation and heat preservation, contact heat transfer and convective heat transfer are greatly reduced, and the heat preservation effect is improved; through the arrangement of the crisscross closed interface, the heat preservation effect is further improved; and through the arrangement of double-layer vacuum heat insulation, heat lost by radiation is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of antifreeze of heating pipe networks, in particular to an antifreeze device for heating pipe networks. Background Art

[0002] The heating pipe network refers to the heating pipes that start from the boiler room, direct-fired machine room, heating center, etc., and lead from the heat source to the thermal entrance of the building. It is a pipe network formed by multiple heating pipes. In the cold winter, the heating pipes play a vital role in providing us with a warm and comfortable living environment. The heating pipes are exposed to the outside, which can easily affect the heating effect, and when the outside temperature is too low, the pipes are prone to freezing and cracking, affecting the normal use of the heating pipes. In order to ensure the normal operation of the heating pipes and avoid freezing problems, it is necessary to take a series of insulation and anti-freeze measures.

[0003] By comparison, the Chinese patent with authorization announcement number CN217004630U discloses an antifreeze device for a heating pipe network, including an upper protection assembly and a lower protection assembly, the upper protection assembly includes an upper protective plate, an upper fixing plate fixed at both ends of the outer wall of the upper protective plate, and bolts evenly installed on the upper end of the upper fixing plate and penetrating the upper fixing plate, the inner wall of the upper protective plate is fixed with thermal insulation cotton, the lower protection assembly includes a lower protective plate of the same size as the upper protective plate and fitted at the lower end of the upper protective plate, a lower fixing plate fixed at both ends of the outer wall of the lower protective plate, and threaded holes evenly opened on the lower fixing plate, and the inner wall of the lower protective plate is fixed with thermal insulation cotton.

[0004] The heat of the above patented pipeline can be lost through contact heat transfer, convection heat transfer and radiation heat transfer, and the insulation and antifreeze effect is not good. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of the utility model is to provide an antifreeze device for a heating pipe network to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An antifreeze device for a heating pipe network, comprising a fixing device for fixing the device on the outside of a pipe, a heating device for heat preservation and antifreeze is arranged in the fixing device, and also a heat preservation device for double-layer vacuum heat insulation and cross-cross closed interface arranged between the fixing device and the heating device;

[0008] The heat preservation device includes a first sleeve, which is a front and rear half structure, a first vacuum chamber is opened inside the first sleeve, a second sleeve is installed on the outer wall of the first sleeve, the second sleeve is an upper and lower half structure, the closed lines of the first sleeve and the second sleeve cross, a second vacuum chamber is opened inside the second sleeve, and an upper pad and a lower pad are symmetrically arranged on the outer wall of the second sleeve.

[0009] Furthermore: the fixing device includes a lower clamping ring, which has two lower ear plates symmetrically arranged front and back, an upper clamping ring is arranged above the lower clamping ring, and the upper clamping ring has two upper ear plates symmetrically arranged front and back, four fixing bolts are evenly arranged between the upper ear plate and the lower ear plate on the same side, and fixing nuts are installed on the fixing bolts.

[0010] Furthermore: the heating device comprises a heating sleeve, the heating sleeve is a front and back two-half structure, an electric heating wire is arranged inside the heating sleeve, and an insulation sleeve is arranged on the outer wall of the heating sleeve, the insulation sleeve is a front and back two-half structure.

[0011] Furthermore: the chamber wall surfaces of the first vacuum chamber and the second vacuum chamber are coated with mercury coating.

[0012] Furthermore: the heating device and the first sleeve are bonded and connected to form the inner layer of the device, and the second sleeve, the upper pad, the lower pad and the fixing device are bonded and connected to form the outer layer of the device.

[0013] Further: the thermal insulation sleeve is made of rock wool.

[0014] Compared with the prior art, the beneficial effects are:

[0015] 1. Through the setting of vacuum insulation, contact heat transfer and convection heat transfer are greatly reduced, and the insulation effect is improved;

[0016] 2. The heat preservation effect is further improved by setting the cross-closed interface;

[0017] 3. The double-layer vacuum insulation reduces the heat loss due to radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an antifreeze device for a heating pipe network described in the utility model;

[0019] Figure 2 It is a right view of a fixing device of an antifreeze device of a heating pipe network described in the utility model;

[0020] Figure 3 It is an axonometric diagram of a heat preservation device of an antifreeze device of a heating pipe network described in the utility model;

[0021] Figure 4 It is a partial schematic diagram of the insulation device A of the antifreeze device of the heating pipe network described in the utility model;

[0022] Figure 5 It is a right sectional view of a heating device of an antifreeze device of a heating pipe network described in the utility model.

[0023] In the accompanying drawings: 1. fixing device; 101. lower clamping ring; 102. lower ear plate; 103. upper clamping ring; 104. upper ear plate; 105. fixing bolt; 106. fixing nut; 2. heat preservation device; 201. first sleeve; 202. first vacuum chamber; 203. second sleeve; 204. second vacuum chamber; 205. lower pad; 206. upper pad; 3. heating device; 301. heating sleeve; 302. heating wire; 303. heat preservation sleeve. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-Figure 5 A freezing prevention device for a heating network includes a fixing device 1 for fixing the device on the outside of a pipeline, a heating device 3 for heat preservation and heating for freezing prevention is arranged inside the fixing device 1, and also includes a heat preservation device 2 for double-layer vacuum heat insulation and cross-closed interface arranged between the fixing device 1 and the heating device 3.

[0026] In this embodiment: the fixing device 1 comprises a lower clamping ring 101, the lower clamping ring 101 is symmetrically provided with two lower ear plates 102, an upper clamping ring 103 is provided above the lower clamping ring 101, the upper clamping ring 103 is symmetrically provided with two upper ear plates 104, four fixing bolts 105 are evenly provided between the upper ear plate 104 and the lower ear plate 102 on the same side, and fixing nuts 106 are installed on the fixing bolts 105. The device is installed outside the pipeline, and then the fixing nuts 106 on the fixing bolts 105 are tightened to fix the upper ear plates 104 and the lower ear plates 102, so that the device is fixed to the outside of the pipeline through the upper clamping ring 103 and the lower clamping ring 101;

[0027] In this embodiment, the heat preservation device 2 includes a first sleeve 201, which is a front and back half structure, a first vacuum chamber 202 is opened inside the first sleeve 201, a second sleeve 203 is installed on the outer wall of the first sleeve 201, and the second sleeve 203 is an upper and lower half structure. The closed lines of the first sleeve 201 and the second sleeve 203 cross each other, a second vacuum chamber 204 is opened inside the second sleeve 203, and an upper pad 206 and a lower pad 205 are symmetrically arranged on the outer wall of the second sleeve 203. The wall surfaces of the first vacuum chamber 202 and the second vacuum chamber 204 are coated with mercury coating. The heating device 3 and the first sleeve 201 are glued and connected to form the inner layer of the device. The second sleeve 203, the upper pad 206, and the lower pad 205 are connected to form the inner layer of the device. 205 and the fixing device 1 are glued and connected to form the outer layer of the device, and the dissipated heat is transferred to the first sleeve 201. The first vacuum chamber 202 in the first sleeve 201 will greatly reduce the heat dissipated by contact heat transfer and convection heat transfer, greatly improving the heat preservation capacity. Then the heat radiated from the first sleeve 201 is transferred to the second sleeve 203. The second vacuum chamber 204 in the second sleeve 203 will reduce the loss of heat radiated from the first sleeve 201, further enhancing the heat preservation capacity. At the same time, the second sleeve 203 and the first sleeve 201 are cross-arranged to block the interface of the first sleeve 201 and reduce the heat dissipated from the interface. The upper pad 206 and the lower pad 205 are used to provide buffer protection for the second sleeve 203;

[0028] In this embodiment: the heating device 3 includes a heating sleeve 301, which is a front and back half structure. A heating wire 302 is arranged inside the heating sleeve 301, and an insulation sleeve 303 is arranged on the outer wall of the heating sleeve 301. The insulation sleeve 303 is a front and back half structure. The insulation sleeve 303 is made of rock wool. In cold weather, the heating wire 302 in the heating sleeve 301 generates heat to heat the pipeline to prevent freezing, and the insulation sleeve 303 keeps the heating sleeve 301 warm.

[0029] Working principle: The device is installed on the outside of the pipeline, and then the fixing nut 106 on the fixing bolt 105 is tightened to fix the upper ear plate 104 and the lower ear plate 102, so that the device is fixed to the outside of the pipeline through the upper clamp ring 103 and the lower clamp ring 101; in cold weather, the electric heating wire 302 in the heating sleeve 301 works to generate heat to heat the pipeline to prevent freezing, and the insulation sleeve 303 keeps the heating sleeve 301 warm, and the lost heat is transferred to the first sleeve 201, and the first vacuum chamber 202 in the first sleeve 201 will greatly reduce the heat generated by the connection The heat dissipated by contact heat transfer and convection heat transfer greatly improves the thermal insulation capacity. Then, the heat radiated by the first sleeve 201 is transferred to the second sleeve 203. The second vacuum chamber 204 in the second sleeve 203 will reduce the loss of heat radiated from the first sleeve 201, further enhancing the thermal insulation capacity. At the same time, the second sleeve 203 and the first sleeve 201 are cross-arranged to block the interface of the first sleeve 201 and reduce the heat dissipated from the interface. The upper pad 206 and the lower pad 205 are used to provide buffer protection for the second sleeve 203.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antifreeze device for a heating network, comprising a fixing device for fixing the device on the outside of a pipeline, wherein a heating device for heat preservation and antifreeze is arranged in the fixing device, characterized in that: It also includes a heat preservation device for double-layer vacuum heat insulation and cross-cross closed interface arranged between the fixing device and the heating device; The heat preservation device includes a first sleeve, which is a front and rear half structure, a first vacuum chamber is opened inside the first sleeve, a second sleeve is installed on the outer wall of the first sleeve, the second sleeve is an upper and lower half structure, the closed lines of the first sleeve and the second sleeve cross, a second vacuum chamber is opened inside the second sleeve, and an upper pad and a lower pad are symmetrically arranged on the outer wall of the second sleeve.

2. The antifreeze device for a heating pipe network according to claim 1, characterized in that: The fixing device includes a lower clamping ring, which is symmetrically provided with two lower ear plates in front and back, an upper clamping ring is provided above the lower clamping ring, and the upper clamping ring is symmetrically provided with two upper ear plates in front and back, four fixing bolts are evenly provided between the upper ear plate and the lower ear plate on the same side, and fixing nuts are installed on the fixing bolts.

3. The antifreeze device for a heating pipe network according to claim 1, characterized in that: The heating device comprises a heating sleeve, which is a front and back half structure, wherein an electric heating wire is arranged inside the heating sleeve, and an insulation sleeve is arranged on the outer wall of the heating sleeve, wherein the insulation sleeve is a front and back half structure.

4. The antifreeze device for a heating pipe network according to claim 1, characterized in that: The chamber wall surfaces of the first vacuum chamber and the second vacuum chamber are coated with mercury coating.

5. The antifreeze device for a heating pipe network according to claim 1, characterized in that: The heating device and the first sleeve are bonded and connected to form the inner layer of the device, and the second sleeve, the upper pad, the lower pad and the fixing device are bonded and connected to form the outer layer of the device.

6. The antifreeze device for a heating pipe network according to claim 3, characterized in that: The thermal insulation sleeve is made of rock wool.

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