CN213300497U

CN213300497U - Explosion-proof electric heating rod

Info

Publication number: CN213300497U
Application number: CN202022424499.2U
Authority: CN
Inventors: 徐红骏
Original assignee: Taizhou Dekai Explosion Proof Electric Co ltd
Current assignee: Taizhou Dekai Explosion Proof Electric Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-05-28
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses an explosion-proof electric heating rod, which belongs to an electric heating device and comprises a heating rod body, a fixed cylinder and a top cover, wherein the fixed cylinder is fixed on the periphery of the lower end surface of the top cover, the heating rod body is arranged in the fixed cylinder, the heating rod body consists of a sleeve and a core rod, and the sleeve and the core rod are both conductors; the structure is solid and simple, the electric heating rod can heat uniformly, the service life is long, the loss is avoided, the heat efficiency is high, and the surface heat load is low. The temperature of the heating rod can be adjusted at any time by externally connecting the electric control cabinet and arranging the air escape valve in the fixed cylinder, and when the pressure is too high, the air escape valve can be automatically opened to discharge gas through the exhaust port to reduce the pressure in the heating container, so that the safety of the heater is ensured; through the design that can dismantle in a flexible way of this kind of installation cap and snap ring, make maintenance and change convenient and fast more to the heating pipe, use manpower sparingly, man-hour, reduce the loss. Effectively makes up the defects of the prior art and meets the requirements of actual conditions.

Description

Explosion-proof electric heating rod

Technical Field

The utility model belongs to the electrical heating equipment specifically is a relate to an explosion-proof electrical heating stick.

Background

The electric heating rod is an auxiliary heating device which converts electric energy into heat energy and is mainly used for freezing prevention, heat preservation and heating of equipment such as pipelines, valves, pump bodies, tanks and the like in the industries such as petroleum, chemical engineering, electric power, machinery and the like. However, the electric heating rod in the prior art has the following problems: 1. in the prior art, steam or hot water is mostly adopted as a disc pot type heater of a heating medium, and a small part of electric heating devices are also arranged, but the disc pot type heater has the defects of high accident rate, difficult installation, overhaul and maintenance, large energy consumption and the like; 2. due to the unreasonable structure of the explosion-proof electric heating rod used in the existing electric heating device, the temperature of the explosion-proof electric heating rod cannot be controlled by workers except for pulling out a power supply, and meanwhile, explosion accidents are easy to occur when the internal pressure of the explosion-proof electric heating rod is too high; 3. when the explosion-proof electric heater is used, in order to avoid the cable from being burnt due to overhigh heat, a water cooling cavity is usually welded at one end of the container body, which is close to the explosion-proof cavity, and cooling water circulation can be formed through a cooling water inlet and a cooling water outlet, so that the heat insulation effect is achieved.

Disclosure of Invention

The utility model aims at solving the technical problem and providing an explosion-proof electric heating rod.

The utility model discloses an explosion-proof electrical heating rod, including heating rod body, a fixed cylinder and a top cap, the fixed cylinder is fixed on the top cap lower end face circumference, the heating rod body is installed inside the fixed cylinder, the heating rod body comprises sleeve pipe and plug, and sleeve pipe and plug are all conductors; the sleeve is a metal tube with an opening at the top end, the sleeve is coaxially sleeved outside the core rod, magnesium powder is filled between the sleeve and the core rod, and the upper end of the core rod is connected with a connecting rod which penetrates through the opening at the top end of the sleeve and extends to form a wiring leading-out end; the top of the sleeve is detachably connected with a mounting cap with a lead hole, and outward convex edges are arranged at intervals on the periphery of the outer edge of the mounting cap; the utility model discloses a fixing device for fixing a wire, including a fixed cylinder, a fixed cylinder.

As a further improvement, the exhaust port and the air escape valve are connected through a pipeline, and the air escape valve is internally provided with a pressure sensor.

As a further improvement, the terminal is drawn forth in the wiring and is carried out electric connection, electric control cabinet and snuffle valve electric connection through outlet and electric control cabinet.

As a further improvement of the utility model, the mounting panel includes heat insulating board and insulation board, the heat insulating board bonds on the lower terminal surface of insulation board.

As a further improvement of the utility model, the sleeve is made of seamless steel tube.

As a further improvement of the utility model, the inner circumferential wall of the mounting cap is provided with an internal thread, and the outer circumferential wall of the upper part of the sleeve matched with the internal thread is provided with an external thread which is connected with the external thread.

The utility model discloses an explosion-proof electrical heating rod, the structure is solid, simple, and the electrical heating rod generates heat evenly, and long service life does not have the loss, and the thermal efficiency is high, the surface heat load is low. When the device is used for heating, the water cooling structure of the original device is eliminated, and the mounting plate consisting of the insulating plate and the heat insulating plate is arranged, so that heat loss can be further reduced; the temperature of the heating rod can be adjusted at any time by externally connecting the electric control cabinet and arranging the air escape valve in the fixed cylinder, and when the pressure is too high, the air escape valve can be automatically opened to discharge gas through the exhaust port to reduce the pressure in the heating container, so that the safety of the heater is ensured; through the design that can dismantle in a flexible way of this kind of installation cap and snap ring, make maintenance and change convenient and fast more to the heating pipe, use manpower sparingly, man-hour, reduce the loss. Effectively makes up the defects of the prior art and meets the requirements of actual conditions.

Drawings

Fig. 1 is a schematic perspective view of a heating rod body according to the present invention;

FIG. 2 is a schematic view of the mounting plate structure of the present invention;

FIG. 3 is a schematic view of the assembly of the mounting cap and the snap ring of the present invention;

fig. 4 is a sectional view of the heating rod body of the present invention.

Detailed Description

The utility model discloses an explosion-proof electrical heating rod, including heating rod body 1, a fixed cylinder 12 and a top cap 2, the fixed cylinder 12 is fixed on the top cap 2 lower end face circumference, and the heating rod body 1 is installed to the fixed cylinder 12 inside, the heating rod body 1 is made up of sleeve pipe 3 and plug 4, and sleeve pipe 3 is made for seamless steel pipe and plug 4 is the conductor; the sleeve 3 is a metal tube with an opening at the top end, the metal tube is coaxially sleeved outside the core rod 4, magnesium powder is filled between the sleeve and the core rod 4, and the upper end of the core rod 4 is connected with a connecting rod 5 which penetrates through the opening at the top end of the sleeve 3 and extends to form a wiring leading-out end 6; the top of the sleeve 3 is detachably connected with a mounting cap 7 with a lead hole, the outer edge of the mounting cap 7 is provided with outward convex edges 8 at intervals around the circumference, the inner circumference wall of the mounting cap 7 is provided with internal threads, the outer circumference wall of the upper part of the sleeve 3 matched with the internal threads is provided with external threads, and the internal threads and the external threads are connected with each other by threads; the utility model discloses a fixing tube 12, including gas vent 9, mounting panel 17 and snuffle, wherein mounting panel 17 includes heat insulating board 11 and insulation board 10, heat insulating board 11 bonds on insulation board 10's lower terminal surface, and this structure can play thermal-insulated effect, avoids appearing the too high condition emergence of burning out the cable of heat effectively, fixing tube 12 outer wall is equipped with outlet 13, is equipped with gas vent 9 below outlet 13, gas vent 9 passes through the pipe connection with the snuffle of establishing on fixing tube 12 inner wall, and is equipped with pressure sensors inside the snuffle, fixing tube 12 inner wall ring week, snuffle's below is fixed with mounting panel 17, terminal surface is opened has the through-hole 14 that runs through mounting panel 17 under mounting panel 17, inlays snap ring 15 in the through-hole 14, and it has the pin hole to open on snap ring 15, and the diameter of snap ring 15, pin hole and mounting cap 7, the same-axis adaptation of string, the circumference of the ring is provided with a clamping groove 16 which is mutually clamped with the convex edge 8.

The utility model discloses an explosion-proof electrical heating rod, this internal closed plug 4 of having of heater makes the flame proof type together with sleeve pipe 3, and at plug 4 and sleeve pipe 3's space part densely and compactly insert the equal good crystallization magnesium oxide powder of thermal conductivity and insulating properties. The structure is advanced, the heat efficiency is high, the heating is uniform, when current passes through the core rod 4, the generated heat is diffused to the surface of the metal tube through the crystallized magnesia powder and then is transferred to a heated piece or air, and the heating purpose is achieved; simultaneously this heating rod body 1 uses with the electrical control cabinet is supporting, and the terminal 6 is drawn forth in the wiring and is carried out electric connection through outlet 13 and electrical control cabinet, electrical control cabinet and release valve electric connection, and the staff can control the temperature of heating rod body 1 at any time and discharge the high atmospheric pressure in the fixed section of thick bamboo 12 through the release valve at any time, avoids leading to the emergence of explosion incident because of the atmospheric pressure in the fixed section of thick bamboo 12 is too high.

Claims

1. The explosion-proof electric heating rod comprises a heating rod body (1), a fixed cylinder (12) and a top cover (2), and is characterized in that the fixed cylinder (12) is fixed on the periphery of the lower end face of the top cover (2), the heating rod body (1) is installed in the fixed cylinder (12), the heating rod body (1) is composed of a sleeve (3) and a core rod (4), and the sleeve (3) and the core rod (4) are both conductors; the sleeve (3) is a metal pipe with an opening at the top end, the metal pipe is coaxially sleeved outside the core rod (4), magnesium powder is filled between the sleeve and the core rod (4), and the upper end of the core rod (4) is connected with a connecting rod (5) which penetrates through the opening at the top end of the sleeve (3) and extends to form a wiring leading-out end (6); the top of the sleeve (3) is detachably connected with a mounting cap (7) with a lead hole, and outward convex edges (8) are arranged at intervals on the periphery of the outer edge of the mounting cap (7); fixed cylinder (12) are equipped with outlet (13) including gas vent (9), mounting panel (17) and snuffle valve at fixed cylinder (12) outer wall, are equipped with gas vent (9) below outlet (13), gas vent (9) are connected with the snuffle valve of establishing on fixed cylinder (12) inner wall, fixed cylinder (12) inner wall ring week, snuffle valve's below is fixed with mounting panel (17), open through-hole (14) that run through mounting panel (17) under mounting panel (17), inlay snap ring (15) in through-hole (14), it has the pin hole to open on snap ring (15), and the diameter of snap ring (15), pin hole and mounting cap (7) diameter, cluster line hole coaxial adaptation, its ring week inwards open have with protruding draw-in groove (16) of following (8) mutual block.

2. An explosion-proof electric heating rod as set forth in claim 1, characterized in that the air outlet (9) and the air release valve are connected by a pipe, and a pressure sensor is provided inside the air release valve.

3. An explosion-proof electric heating rod as claimed in claim 1 or 2, characterized in that the terminal lead-out (6) is electrically connected to an electrical control cabinet through a wire outlet (13), the electrical control cabinet being electrically connected to the air release valve.

4. An explosion-proof electric heating rod according to claim 1, wherein the mounting plate (17) comprises an insulating plate (11) and an insulating plate (10), and the insulating plate (11) is bonded to the lower end surface of the insulating plate (10).

5. An explosion-proof electrical heating rod as claimed in claim 1, characterized in that the sleeve (3) is made of seamless steel tubing.

6. An explosion-proof electric heating rod as claimed in claim 1, characterized in that the mounting cap (7) has an internal thread on its inner circumferential wall and an external thread on its outer circumferential wall at the upper part of the sleeve (3) which is fitted with it, both of which are screwed together.