Foldable heating strip

Abstract

A foldable heating strip is characterized in that the foldable heating strip is formed by connecting a plurality of set heating strips (1) through bending sections (2), each heating strip is composed of a film heater (3), heat conduction metal plates (4) and a metal shell (5), the film heater is connected with a power source through a connector assembly, and the heat conduction metal plates are installed on the upper face and the lower face of the film heater in a pressed mode. The heat-conducting metal plate is pressed and fixed by the metal shell; the bending section is composed of a bendable strip-shaped metal bonding pad (6), insulating cloth (7), a gap bridge metal flexible connection (8) and a silica gel insulating layer (9), the gap bridge metal flexible connection is arranged on the strip-shaped metal bonding pad, and the strip-shaped metal bonding pad is arranged on the insulating cloth playing a supporting and insulating role. And the silica gel insulating layer is wrapped on a combined body formed by the gap bridge metal flexible connection, the metal bonding pad and the insulating cloth. The utility model solves the problems that the client is troublesome to transport, inconvenient to carry, high in energy consumption and poor in heating effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heating technology, especially a heating strip for railway turnout snow melting, in particular to a foldable heating strip BACKGROUND

[0002] At present, the railway turnout snow melting heating strip is the key equipment for preventing the turnout snow icing in the railway system, the snow is melted through the electric heating technology, the turnout conversion flexibility and train operation safety are ensured, Chinese patent 201120047789.8 is the commonly used heating strip on the market, it is with nickel chromium stainless steel as the shell, built-in nickel chromium resistance wire, fills mineral magnesium oxide as the insulating layer's flat heating pipe, its existence packing and transportation are troublesome, cannot carry, the power is big, the technical problem of uneven heating. Chinese patent 201820789298.2 discloses a kind of heaters, they are influenced by heating length, transportation and on-site installation, assembly difficulty is greater, it is difficult to adapt to user requirements, must be improved. SUMMARY

[0003] The utility model aims at the inconvenient transportation problem of existing heating strip length exceeding certain size, and designs a foldable heating strip.

[0004] The technical scheme of the utility model is:

[0005] A foldable heating strip, characterized by: it is connected by a plurality of set heating strips 1 through bending section 2, the heating strip 1 is composed of thin film heater 3, heat conducting metal plate 4 and metal shell 5, the thin film heater 3 is connected with power supply through connector assembly, the heat conducting metal plate 4 is pressed and mounted on the upper and lower surfaces of thin film heater 3, and the metal shell 5 press-fits and fixes the heat conducting metal plate 4;The bending section 2 is composed of bendable strip-shaped metal pad 6, insulating cloth 7, bridge metal soft connection 8 and silica gel insulation layer 9, the bridge metal soft connection 8 is placed on the strip-shaped metal pad 6, the strip-shaped metal pad 6 is placed on the insulating cloth 7 playing the role of support and insulation, the silica gel insulation layer 9 is wrapped on the combination of bridge metal soft connection 8, metal pad (6) and insulating cloth 7, and the two ends of metal pad 6 are welded and connected with the corresponding electrical connectors of the two ends of the heating strip 1 to be connected and make the two heating strips electrically connected.

[0006] The filler 10 is installed between the metal shell 5 and the heat conducting metal plate 4.

[0007] The heating strip 1 is electrically connected in series between the heating strip 1, forming a series connection structure on the whole.

[0008] The heating strip 1 is divided into at least two parts, and each part is electrically connected in parallel, and each part is electrically connected in series, forming a series-parallel structure on the whole.

[0009] The utility model discloses the beneficial effect:

[0010] The utility model discloses the long strip heating strip is changed into multistage structure, and the folding carrying is convenient, and the packing is convenient, and the energy consumption is low, the client transportation trouble, the carrying inconvenience, and the energy consumption are high, and the heating effect is not good the problem of. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the general structure schematic diagram of the utility model.

[0012] Figure 2 It is the heating strip cross section structure schematic diagram of the utility model.

[0013] Figure 3 It is the bending section cross section structure schematic diagram of the utility model.

[0014] Figure 4 It is the schematic diagram of the heating strip series connection of the utility model.

[0015] Figure 5 It is the schematic diagram of the heating strip series-parallel connection of the utility model. DETAILED DESCRIPTION

[0016] The utility model will be further explained below combining with the drawings and examples.

[0017] The structure, proportion, size etc. shown in the drawings of the specification, are only used to cooperate the content disclosed in the specification, to be understood and read by the person skilled in the art, and not to limit the limited conditions that the utility model can be implemented, so it does not have the substantial meaning of technology, any modification of structure, change of proportion relationship or adjustment of size, under the condition that it does not affect the effect and the purpose that the utility model can produce, should still fall in the range that the technical content disclosed in the utility model can cover. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" etc. cited in the specification, are only for the clear understanding of the description, and not to limit the range that can be implemented, the change or adjustment of relative relationship, when no substantial change of technical content, is also regarded as the scope that the utility model can be implemented.

[0018] As Figures 1-3 Shown.

[0019] A foldable heating strip, which is connected by a plurality of set heating strips 1 through bending sections 2, as Figure 1As shown, the film heater 3 of the first heating strip 1 is connected with the metal hose joint 12 through the joint base 11, one end of the power supply lead is electrically connected with the socket 13, the other end is electrically connected with the metal hose joint 12, and the metal bellow 14 is sleeved on the power supply lead. Figure 2 As shown, the film heater 3 is connected with the power supply through the joint assembly, the heat-conducting metal plate 4 is press-fitted on the upper and lower surfaces of the film heater 3, and the metal shell 5 press-fits and fixes the heat-conducting metal plate 4; the bending section 2 is composed of the bendable strip-shaped metal pad 6, the insulating cloth 7, the bridge metal soft connection 8 and the silica gel insulation layer 9, as shown in Figure 3 As shown, the number of the metal pad 6 is two, corresponding to the positive and negative electrodes, the insulating cloth 7 plays a supporting and insulating role, and the bridge metal soft connection 8 mainly plays a role in preventing the bending section from breaking and increasing toughness and strength. The bridge metal soft connection 8 (conductive braided tape) is pressed on the strip-shaped metal pad 6, the strip-shaped metal pad 6 is placed on the insulating cloth 7 which plays a supporting and insulating role, the silica gel insulation layer 9 is wrapped on the combination of the bridge metal soft connection 8, the metal pad 6 and the insulating cloth 7, and the two ends of the metal pad 6 are welded and connected with the corresponding electrical connecting pieces of the end portions of the two heating strips 1 and are electrically connected with the two heating strips.

[0020] In specific implementation, the filler 10 can also be installed between the metal shell 5 and the heat-conducting metal plate 4.

[0021] The electrical connection of each heating strip 1 in specific use can adopt the connection mode shown in Figure 4 or Figure 5 As shown. Figure 4 In the above-mentioned embodiment, the heating strips are connected in series to form a series connection structure. Figure 5 In the above-mentioned embodiment, the heating strip 1 is divided into at least two parts, the parts are electrically connected in parallel, the internal heating strips 1 are electrically connected in series, and the overall structure is a series-parallel connection structure.

[0022] The above-mentioned embodiments are only preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and equivalent substitutions can be made, and the technical solutions of the present application after the improvements and equivalent substitutions are all within the protection scope of the present application.

[0023] The parts not involved in the present application are the same as or can be realized by the prior art.

Claims

1. A collapsible heating stick, characterized by: It is connected by bending section (2) by multiple set heating bar (1), the heating bar (1) is composed of film heater (3), heat conducting metal plate (4) and metal shell (5), film heater (3) is connected by joint assembly with power supply, heat conducting metal plate (4) is pressed on the upper and lower surfaces of film heater (3), metal shell (5) is pressed and fixed;The bending section (2) is composed of bendable strip metal pad (6), insulating cloth (7), bridge metal soft connection (8) and silica gel insulation layer (9), bridge metal soft connection (8) is placed on strip metal pad (6), strip metal pad (6) is placed on insulating cloth (7) for supporting and insulating, silica gel insulation layer (9) is wrapped on the combination of bridge metal soft connection (8), metal pad (6) and insulating cloth (7), the both ends of metal pad (6) are welded and connected with the corresponding electrical connecting pieces of the two heating bars (1) end and make two heating bars electrical connection.

2. A collapsible heating article according to claim 1, wherein: The filling material (10) is installed between the metal shell (5) and the heat conducting metal plate (4).

3. The collapsible heating article of claim 1 wherein: The heating bar (1) is electrically connected in series, forming a series structure.

4. The collapsible heating article of claim 1 wherein: The heating bar (1) is divided into at least two parts, each part is electrically connected in parallel, and each part is electrically connected in series, forming a series-parallel structure.

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