CN218352093U - Explosion-proof wiring integrated structure of electric heater and electric heater - Google Patents

Abstract

The application relates to the technical field of electric heaters, and provides an explosion-proof wiring integrated structure of an electric heater and the electric heater. The explosion-proof wiring integrated structure of the electric heater comprises an explosion-proof temperature control box and an explosion-proof junction box, one end of the explosion-proof junction box is provided with a first flange, the other end of the explosion-proof junction box is provided with a second flange, one end of the explosion-proof temperature control box is provided with a third flange, the first flange is used for being connected with an equipment box body in a sealing mode, the second flange is connected with the third flange in a sealing mode, the explosion-proof junction box is provided with a wiring disc, a wire inlet wiring terminal, a wire return wiring terminal and a thermocouple jack are arranged on the wiring disc, a wiring terminal is arranged in the explosion-proof temperature control box, a temperature control regulator and a partition plate are arranged in the explosion-proof temperature control box, and a wire penetrates through the partition plate to connect the wire inlet wiring terminal, the wire return wiring terminal, the thermocouple jack and the temperature control regulator are electrically connected. The explosion-proof wiring integrated structure of the electric heater has the advantages of ordered arrangement of the conducting wires, convenient operation and maintenance and high electrical safety.

Description

Explosion-proof wiring integrated structure of electric heater and electric heater

Technical Field

The application belongs to the technical field of electric heaters, and particularly relates to an explosion-proof wiring integrated structure of an electric heater and the electric heater.

Background

The electric heater is a device capable of converting electric energy into heat energy, can achieve the purposes of heating, heat preservation, heating and the like of flowing media, is widely applied to various industries, particularly in the field of petrochemical industry, has high requirement on explosion resistance, and further improves the requirements on use, maintenance and operability of an electric instrument junction box. At present wide application in box equipment immersion electric heater of pegging graft, its terminal box end cover mostly adopts the screw thread to twist the form of detaining, phenomenon such as screw thread wearing and tearing, smooth silk can appear for a long time, explosion-proof grade descends, because of the space is limited in the terminal box in addition, terminal, binding post, temperature control regulator and wire are all arranged in the terminal box, the space is inside to be arranged complicatedly, for installation and debugging, daily maintenance brings very big inconvenience, and the circuit wire is arranged in disorder, easily cause the risk that line interference, short circuit burn out.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide an explosion-proof wiring integrated structure of electric heater to solve the technical problem that the wire arrangement is unordered, the operation is maintained inconvenient in the terminal box of electric heater among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides an explosion-proof wiring integrated configuration of electric heater, including explosion-proof temperature control box and explosion-proof terminal box, the one end of explosion-proof terminal box is equipped with first flange, and the other end is equipped with the second flange, the one end of explosion-proof temperature control box is equipped with the third flange, first flange be used for with equipment box sealing connection, the second flange with third flange sealing connection, explosion-proof terminal box is provided with the wiring dish, be equipped with inlet wire terminal, return wire terminal and thermocouple jack on the wiring dish, be equipped with binding post, temperature control regulator and division board in the explosion-proof temperature control box, the wire passes the division board will inlet wire terminal, return wire terminal, thermocouple jack and temperature control regulator electricity are connected.

In one embodiment, a thermal insulation member is filled within the explosion proof junction box between the first flange and the junction box.

In one embodiment, the thermal insulation is one of a fiberglass piece, a rock wool piece, a silicate piece, an aerogel blanket piece, and a vacuum panel piece.

In one embodiment, the explosion-proof temperature control box is provided with a positioning ring which can be inserted into the explosion-proof junction box.

In one embodiment, a sealing ring or gasket is provided between the second flange and the third flange.

In one embodiment, the wiring terminal is arranged on the inner wall of the explosion-proof temperature control box, and a power supply wire hole is formed in the side wall of the explosion-proof temperature control box; the temperature control regulator is arranged on the inner side of one end of the explosion-proof temperature control box, and the operation side face of the temperature control regulator is exposed out of the end face of the explosion-proof temperature control box.

In one embodiment, the inner side of the explosion-proof temperature control box is radially provided with a limit convex ring, and the partition plate is detachably arranged on the limit convex ring.

In one embodiment, the temperature controller is a numerical controller or a mechanical controller, and the incoming wire terminal and the return wire terminal are quick-plugging terminals.

In one embodiment, the explosion-proof junction box and the explosion-proof temperature control box are both cast aluminum alloy pieces, stainless steel pieces or polyester resin pieces.

Another aim at of this application provides an electric heater, including heating pipe, temperature tube and as above electric heater explosion-proof wiring integrated configuration, the heating pipe is U type heating pipe, the both ends of heating pipe respectively with inlet wire terminal and return wire terminal connection, the temperature tube with thermocouple jack connection.

The application provides an explosion-proof wiring integrated structure of electric heater and electric heater's beneficial effect lies in: the explosion-proof temperature control box and the explosion-proof junction box are hermetically connected through a flange, so that the structure is simplified, and the installation is convenient; the wiring disc and the partition plate are arranged inside the anti-explosion temperature control box, so that the internal wires can be arranged in groups, the orderliness is guaranteed, and the wiring space is guaranteed and the operation is convenient because the internal wires are partially arranged in the anti-explosion temperature control box and partially arranged in the anti-explosion wiring box; the cable has the advantages of orderly wire arrangement, convenient operation and maintenance and high electrical safety.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic partial sectional structural view of an electric heater provided in an embodiment of the present application;

fig. 2 isbase:Sub>A schematic cross-sectional view atbase:Sub>A-base:Sub>A in fig. 1.

Wherein, in the figures, the various reference numbers:

1. an explosion-proof temperature control box; 2. an explosion-proof junction box; 3. a first flange; 4. a second flange; 5. a third flange; 6. a patch panel; 7. wiring terminals; 8. a wire returning terminal; 9. a thermocouple jack; 10. a wiring terminal; 11. a temperature control regulator; 12. a partition plate; 13. a thermal insulation member; 14. a positioning ring; 15. a seal ring; 16. a power line hole; 17. a limit convex ring; 18. heating a tube; 19. a temperature measuring tube; 20. and (4) conducting wires.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1 to fig. 2, an explosion-proof wiring integrated structure of an electric heater provided in the embodiment of the present application will now be described. The explosion-proof wiring integrated structure of the electric heater comprises an explosion-proof temperature control box 1 and an explosion-proof junction box 2, wherein one end of the explosion-proof temperature control box 1 and one end of the explosion-proof junction box 2 are open ends, and the other end of the explosion-proof temperature control box is a closed end. Wherein, the blind end of explosion-proof terminal box 2 is equipped with first flange 3, and the open end is equipped with second flange 4, and the open end of explosion-proof temperature control box 1 is equipped with third flange 5. Wherein, first flange 3 passes through bolt and equipment box sealing connection, and with prior art adoption screw thread mode like this, phenomenons such as screw thread wearing and tearing, smooth can not appear, guarantee explosion-proof grade.

The second flange 4 and the third flange 5 are connected in a sealing mode through a circle of bolts, so that an inner cavity in the box is separated from the outside. The explosion-proof junction box 2 is provided with a junction plate 6, the junction plate 6 is provided with a wire inlet terminal 7, a wire return terminal 8 and a thermocouple jack 9, a wiring terminal 10, a temperature control regulator 11 and a partition plate 12 are arranged in the explosion-proof temperature control box 1, and a wire 20 penetrates through the partition plate 12 to electrically connect the wire inlet terminal 7, the wire return terminal 8, the thermocouple jack 9 and the temperature control regulator 11; the effect of wiring dish 6 and division board 12 is to advance line terminal 7, return wire terminal 8, thermocouple jack 9 and wire 20 and fix a position in order and set up in groups, avoids wire 20 to arrange in disorder to reduce the risk that line interference, short circuit burn out, guarantee electrical safety, wire 20 arranges in order simultaneously, easy to assemble maintains.

In the embodiment, the explosion-proof temperature control box 1 and the explosion-proof junction box 2 are hermetically connected through the flange, so that the structure is simplified, and internal parts are convenient to mount; the wiring plate 6 and the partition plate 12 are arranged inside, so that the internal leads 20 can be arranged in groups, the orderliness is ensured, and the wiring plate is partially arranged in the explosion-proof temperature control box 1 and partially arranged in the explosion-proof wiring box 2, so that the sufficient wiring space is ensured, and the operation is convenient; has the advantages of orderly arrangement of the leads 20 and convenient operation and maintenance.

In this embodiment, the explosion-proof junction box 2 between the first flange 3 and the junction box 6 is filled with the heat insulation piece 13, and the heat insulation piece 13 is used for heat insulation, so as to prevent heat in the equipment box from being transferred to the box to cause rapid aging of parts in the box, and reduce the service life. Meanwhile, the phenomenon of condensation caused by temperature difference in the box is avoided, and the electrical safety performance is ensured.

In the present embodiment, the heat insulating member 13 is one of a glass fiber member, an asbestos member, a rock wool member, a silicate member, an aerogel felt member, and a vacuum plate member. The specific material type of the heat insulation member 13 can be selected according to actual requirements.

In this embodiment, the positioning ring 14 capable of being inserted into the explosion-proof junction box 2 is arranged on the explosion-proof temperature control box 1, or the positioning ring 14 capable of being inserted into the explosion-proof temperature control box 1 is arranged on the explosion-proof junction box 2, and the positioning ring 14 is used for facilitating quick and accurate installation and positioning, so that the butt joint efficiency of the explosion-proof temperature control box 1 and the explosion-proof junction box 2 is improved.

In this embodiment, a seal ring 15 or a seal gasket is provided between the second flange 4 and the third flange 5, and the seal ring 15 and the seal gasket function to improve the sealing property. The number of seal rings 15 and gaskets may be increased according to the sealing requirements.

In the embodiment, the wiring terminal 10 is arranged on the inner wall of the explosion-proof temperature control box 1, and a power line hole 16 is arranged on the side wall of the explosion-proof temperature control box 1; the temperature control regulator 11 is arranged at the inner side of one end of the explosion-proof temperature control box 1, and the operation side surface of the temperature control regulator 11 is exposed out of the end surface of the explosion-proof temperature control box 1. The explosion-proof temperature control box 1 is exposed out of the operation side surface of the temperature control regulator 11, so that the operation of workers is facilitated, and the temperature is monitored and regulated; the power cord hole 16 is used for facilitating an electric wire or a plug of an external power source to penetrate through and then be electrically connected with the wiring terminal 10 in the box, the wiring terminal 10 is electrically connected with the temperature control regulator 11 through a wire 20, and the wiring is also arranged in the box to ensure the safety.

In this embodiment, a limiting convex ring 17 is radially arranged on the inner side of the explosion-proof temperature control box 1, and the partition plate 12 is detachably arranged on the limiting convex ring 17. Specifically, the partition plate 12 is detachably disposed on the limit convex ring 17 by a screw or a snap. The partition plate 12 is detachably disposed so as to facilitate the orderly arrangement of the leads 20 and the operation of inserting the external power supply into the insertion hole of the power supply line hole 16 so as to be electrically connected to the connection terminal 10.

In this embodiment, the thermostat 11 is a numerical control thermostat or a mechanical thermostat, and the specific type can be selected according to the requirement. The incoming wire binding post 7 and the return wire binding post 8 are quick-inserting binding posts, so that the wiring efficiency can be improved.

In this embodiment, the explosion-proof junction box 2 and the explosion-proof temperature control box 1 are both cast aluminum alloy pieces, stainless steel pieces or polyester resin pieces, and specific materials can be selected according to actual application requirements. The explosion-proof junction box 2 and the explosion-proof temperature control box 1 are molded by compression molding or welding.

In the present embodiment, the thermocouple insertion hole 9 is disposed at the center of the terminal block 6, and the incoming terminal 7 and the return terminal 8 are symmetrically disposed at both sides of the thermocouple insertion hole 9.

In this embodiment, an electric heating tube 18 is further provided, where the electric heating tube 18 includes a heating tube 18, a temperature measuring tube 19, and the electric heater explosion-proof wiring integrated structure described above, where the heating tube 18 is a U-shaped heating tube 18, two ends of the heating tube 18 are respectively connected with the incoming wire terminal 7 and the return wire terminal 8, and the temperature measuring tube 19 is connected with the thermocouple insertion hole 9.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides an electric heater explosion-proof wiring integrated configuration, its characterized in that, includes explosion-proof temperature control box (1) and explosion-proof terminal box (2), the one end of explosion-proof terminal box (2) is equipped with first flange (3), and the other end is equipped with second flange (4), the one end of explosion-proof temperature control box (1) is equipped with third flange (5), first flange (3) are used for with equipment box body sealing connection, second flange (4) with third flange (5) sealing connection, explosion-proof terminal box (2) are provided with wiring dish (6), be equipped with inlet wire terminal (7), return wire terminal (8) and thermocouple jack (9) on wiring dish (6), be equipped with binding post (10), temperature control regulator (11) and division board (12) in explosion-proof temperature control box (1), wire (20) pass division board (12) will inlet wire terminal (7), return wire terminal (8), thermocouple jack (9) and temperature control regulator (11) electricity are connected.

2. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 1, wherein: and a heat insulation piece (13) is filled in the explosion-proof junction box (2) between the first flange (3) and the junction disc (6).

3. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 2, wherein: the heat insulation piece (13) is one of a glass fiber piece, an asbestos piece, a rock wool piece, a silicate piece, an aerogel felt piece and a vacuum plate piece.

4. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 1, wherein: and the anti-explosion temperature control box (1) is provided with a positioning ring (14) which can be inserted into the anti-explosion junction box (2).

5. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 4, wherein: and a sealing ring (15) or a sealing gasket is arranged between the second flange (4) and the third flange (5).

6. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 1, wherein: the wiring terminal (10) is arranged on the inner wall of the explosion-proof temperature control box (1), and a power supply line hole (16) is formed in the side wall of the explosion-proof temperature control box (1); the temperature control regulator (11) is arranged on the inner side of one end of the explosion-proof temperature control box (1), and the operation side face of the temperature control regulator (11) is exposed out of the end face of the explosion-proof temperature control box (1).

7. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 6, wherein: the explosion-proof temperature control box is characterized in that a limiting convex ring (17) is radially arranged on the inner side of the explosion-proof temperature control box (1), and the partition plate (12) is detachably arranged on the limiting convex ring (17).

8. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 1, wherein: temperature control regulator (11) are numerical control regulator or mechanical control ware, inlet wire terminal (7) with return wire terminal (8) are the plug-in terminal soon.

9. An explosion-proof wiring integrated structure of an electric heater as set forth in claim 1, wherein: the explosion-proof junction box (2) and the explosion-proof temperature control box (1) are both cast aluminum alloy pieces, stainless steel pieces or polyester resin pieces.

10. An electric heater, characterized by, including heating pipe (18), temperature tube (19) and the explosion-proof wiring integrated structure of electric heater of any one of claims 1-9, heating pipe (18) are U type heating pipe (18), the both ends of heating pipe (18) respectively with inlet wire terminal (7) and return wire terminal (8) are connected, temperature tube (19) with thermocouple jack (9) are connected.

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