External winding type electric heat tracing anti-condensation device of storage tank

Abstract

The utility model belongs to the technical field of heat preservation of molten salt storage tanks, and particularly relates to an external winding type electric heat tracing anti-condensation device of a storage tank. The external winding type electric heat tracing anti-condensation device for the storage tank comprises a multi-layer pipe body, a plurality of electric heat tracing layers and a plurality of electric heat tracing layers, the pipe body comprises at least one opening; a heating piece is arranged in the pipe body; the outer heat preservation layer is arranged on the periphery of the pipe body. The external winding type electric heat tracing anti-condensation device for the storage tank comprises the multi-layer pipe body arranged on the outer wall of the storage tank, the heating piece is arranged in the multi-layer pipe body, the pipe body comprises at least one opening, when the heating piece is damaged, the damaged heating piece can be pulled out from the opening of the corresponding pipe body to be replaced, and the external winding type electric heat tracing anti-condensation device for the storage tank is very convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal insulation of molten salt storage tanks, and in particular relates to an externally wound electric heating and anti-condensation device for a storage tank. Background Art

[0002] Concentrated solar power plants all use molten salt storage tanks. Because molten salt solidifies at low temperatures, these tanks are often equipped with electric heat tracers. A common method is to wrap the heat trace directly around the outside of the tank. However, if the heat trace is damaged, it is almost impossible to replace because the entire insulation system must be removed. Furthermore, the large diameter and height of the tanks make replacement difficult. Utility Model Content

[0003] The utility model aims to provide a storage tank outer winding type electric heating anti-condensation device to solve the technical problem that the existing storage tank outer winding type thermal insulation structure is difficult to replace.

[0004] In order to solve the above technical problems, the utility model provides a tank external winding electric heating anti-condensation device, comprising:

[0005] A multi-layer pipe body, configured to be disposed on an outer wall of a storage tank; the pipe body comprising at least one opening;

[0006] A heating element is provided in the tube body;

[0007] The outer insulation layer is arranged on the outer periphery of the pipe body.

[0008] In one embodiment of the present application, a pumping portion is provided on at least one end of the heating element, and the pumping portion is exposed at the opening of the tube body.

[0009] In one embodiment of the present application, the tube body includes two openings; and a pumping portion is provided at both ends of the heating element, and the pumping portion is exposed at the openings of the tube body.

[0010] In one embodiment of the present application, the tube body includes a winding portion and an extending portion;

[0011] In one embodiment of the present application, the heating element is an electric heating element, a heating wire or a heating tube.

[0012] In one embodiment of the present application, the cross-sectional shape of the tube body includes at least one straight edge, and the straight edge is arranged toward the outer wall of the storage tank.

[0013] In one embodiment of the present application, the interior of the tube is filled with heat-conducting material.

[0014] In one embodiment of the present application, the interior of the tube is filled with lubricating material.

[0015] In one embodiment of the present application, the interior of the tube is filled with graphite.

[0016] The beneficial effect of the present invention is that the tank outer wrapped electric heating anti-condensation device of the present invention includes a multi-layer pipe body for being arranged on the outer wall of the tank, a heating element is arranged inside the pipe body, and the pipe body includes at least one opening. When the heating element is damaged, the damaged heating element can be pulled out from the opening of the corresponding pipe body for replacement, which is very convenient.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a side sectional view of the utility model of the storage tank external winding type electric heating anti-condensation device;

[0021] Figure 2 This is a top sectional view of the utility model of the storage tank external winding type electric heating anti-condensation device;

[0022] Figure 3 yes Figure 2 Enlarged view of point B in the middle;

[0023] Figure 4 yes Figure 1 Enlarged view of point A in the middle.

[0024] In the picture:

[0025] Storage tank 100 , multi-layer pipe body 1 , opening 11 , winding portion 12 , extending portion 13 , heating element 2 , outer insulation layer 3 , thermal conductive material 4 . DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figures 1 to 4 In one embodiment of the present application, a tank externally wound electric heating and anti-condensation device includes: a multi-layer pipe body 1, which is used to be arranged on the outer wall of the storage tank 100; and the pipe body 1 includes at least one opening 11; a heating element 2 is arranged in the pipe body 1; and an outer insulation layer 3 is arranged on the outer periphery of the pipe body 1.

[0028] In this embodiment, the multi-layer tube body 1 is used to be arranged on the outer wall of the storage tank 100, and a heating element 2 is arranged inside it, which can provide external insulation for the storage tank 100; the tube body 1 includes at least one opening 11, and when the heating element 2 is damaged, the heating element 2 can be easily pulled out of the tube body 1 for replacement.

[0029] Furthermore, in order to facilitate the extraction of the heating element 2 , a pulling portion is provided on at least one end of the heating element 2 , and the pulling portion is exposed at the opening 11 of the tube body 1 .

[0030] Optionally, the pulling portion may be the end portion of the heating element 2 body; or it may be a component connected to the heating element 2 for easy pulling, such as a stainless steel wire or the like.

[0031] Optionally, the opening 11 can be closed by a sealing piece when the externally wrapped electric heating and anti-coagulation device of the storage tank is working, and can be opened when the heating element 2 needs to be repaired or replaced; when closed by the sealing piece, the pumping part can be accommodated in the opening 11, or it can pass through the sealing piece and be exposed to the opening 11 of the tube body 1.

[0032] Specifically, in one application scenario, when the heating element 2 in a certain tube body 1 is damaged, the opening 11 can be opened, and then the pulling part can be pulled out to pull out the heating element 2.

[0033] Optionally, in one embodiment, the tube body 1 includes only one opening 11 , and the heating element 2 to be replaced and the replaced heating element 2 both enter and exit from the opening 11 .

[0034] In some embodiments, since the storage tank 100 is large, the tube body 1 is curved, the heating element 2 is not rigid enough, etc., the heating element 2 is easy to pull out but difficult to insert. Based on this, the tube body 1 includes two openings 11; both ends of the heating element 2 are provided with a pulling part, and the pulling part is exposed at the opening 11 of the tube body 1.

[0035] Specifically, during replacement, the pulling portion at one end of the damaged heating element 2 can be connected to the pulling portion of the new heating element 2, and then the damaged heating element 2 can be pulled out while the new heating element 2 can be pulled in, thereby improving replacement efficiency.

[0036] See also Figure 3 Optionally, the tube body 1 includes a winding portion 12 and an extending portion 13; the winding portion 12 is arranged on the outer wall of the storage tank 100, and the extending portion 13 extends out of the outer insulation layer 3.

[0037] Optionally, the heating element 2 is an electric heating element, a heating wire or a heating tube.

[0038] Preferably, the heating element 2 can be an electric heat tracing device. Specifically, in some application scenarios, the molten salt storage tank needs to be preheated before the molten salt is pumped into it. Conventional use of flue gas from a combustion furnace to heat the tank has low thermal efficiency. If the tank needs to be preheated to a higher temperature, a large amount of gas is used, resulting in waste. Using an external electric heat tracing device to heat the tank eliminates the need to purchase and install a combustion system, saving costs and increasing heating efficiency.

[0039] See also Figure 4 The cross-sectional shape of the tube body 1 includes at least one straight edge, and the straight edge is arranged toward the outer wall of the storage tank 100. Optionally, the straight edge can be directly attached to the outer wall of the storage tank 100, or can be indirectly attached to the outer wall of the storage tank 100 through a heat conductive material.

[0040] In this embodiment, by providing a straight edge on the outer wall of the storage tank 100 , the contact area can be increased, and the heat energy of the tube body 1 can be better transferred to the storage tank 100 .

[0041] Optionally, the cross-sectional shape of the tube body 1 may be semicircular or D-shaped, with one side being a straight side and the other side being an arc-shaped side; of course, in some other embodiments, the cross-sectional shape of the tube body 1 may be triangular, rectangular, polygonal, etc.

[0042] In this embodiment, optionally, the interior of the tube body 1 is filled with a heat-conducting material 4 , which can conduct heat from the heating element 2 to the tube body 1 .

[0043] In this embodiment, optionally, the interior of the tube body 1 is filled with lubricating material, which can reduce the friction coefficient between the tube body 1 and the heating element 2 and facilitate pulling during replacement.

[0044] In this embodiment, optionally, the thermal conductive material 4 and the lubricating material can be a material having both thermal conductive and lubricating properties; or two or more different materials, which are mixed and filled in the tube body 1 and have both thermal conductive and lubricating properties.

[0045] In this embodiment, the interior of the tube body 1 is preferably filled with graphite. In this embodiment, graphite has good sliding properties and is less likely to damage the electric heat trace. Graphite also has a high thermal conductivity, exceeding that of the steel used in the tank body, allowing for better transfer of heat generated by the electric heat trace to the tank body. Furthermore, graphite is highly resistant to high temperatures and will not be damaged by direct contact with the electric heat trace.

[0046] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0047] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A storage tank external winding electric heating anti-condensation device, characterized in that: include: A multi-layer pipe body (1) is used for being arranged on the outer wall of a storage tank (100); and the pipe body (1) comprises at least one opening (11); A heating element (2) is provided in the tube body (1); An outer thermal insulation layer (3) is arranged on the outer periphery of the tube body (1); At least one end of the heating element (2) is provided with a pumping portion, and the pumping portion is exposed at the opening (11) of the tube body (1).

2. The storage tank outer winding electric heating anti-condensation device according to claim 1 is characterized in that: The tube body (1) comprises two openings (11); Both ends of the heating element (2) are provided with a pumping portion, and the pumping portion is exposed at the opening (11) of the tube body (1).

3. The storage tank outer winding electric heating anti-condensation device according to claim 1 is characterized in that: The tube body (1) comprises a winding portion (12) and an extending portion (13); The winding portion (12) is arranged on the outer wall of the storage tank (100), and the extending portion (13) extends out of the outer insulation layer (3).

4. The storage tank outer winding electric heating anti-condensation device according to claim 1 is characterized in that: The heating element (2) is an electric heating element, a heating wire or a heating tube.

5. The storage tank outer winding electric heating anti-condensation device according to claim 1 is characterized in that: The cross-sectional shape of the tube body (1) includes at least one straight edge, and the straight edge is arranged toward the outer wall of the storage tank (100).

6. The storage tank outer winding electric heating anti-condensation device according to claim 1 is characterized in that: The interior of the tube body (1) is filled with heat-conducting material (4).

7. The storage tank outer winding electric heating anti-condensation device according to claim 1 is characterized in that: The interior of the tube body (1) is filled with lubricating material.

8. The storage tank outer winding electric heating anti-condensation device according to claim 1 is characterized in that: The interior of the tube (1) is filled with graphite.

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