CN-224201875-U - Tank-type explosion-proof electric heater

Abstract

The utility model relates to a tank-type explosion-proof electric heater, which belongs to the technical field of electric heaters and comprises a heating tank body, a tubular electric heater main body, a first explosion-proof partition plate, a sealing tank cover, an electric heater cable and a high-temperature-resistant remote-transmission magnetic flap level meter, wherein a second explosion-proof partition plate is arranged on the heating tank body. According to the utility model, the U-shaped electric heating pipe of the tubular electric heater main body is inserted into the heating tank cavity, the first explosion-proof partition plate is connected with the second explosion-proof partition plate, and the first explosion-proof partition plate and the second explosion-proof partition plate can be combined to separate the explosion-proof isolation cavity from the heating tank cavity, so that an electric spark can be physically isolated, a steam permeation path is blocked, the explosion risk caused by the electric spark is avoided, the explosion propagation path is blocked by a cavity separation design, nitrogen is introduced into the explosion-proof isolation cavity through the one-way air inlet valve, the junction box end and the junction of the tubular electric heater main body can be sealed in a nitrogen inert environment, and the inert environment eliminates the possibility of ignition of the electric spark, so that the explosion-proof performance of the tubular electric heater can be further improved.

Inventors

• YANG YUGUAN

Assignees

• 盐城市鼎创防爆电加热器有限公司

Dates

Publication Date

20260505

Application Date

20250609

Claims (8)

1. 1. The tank-type explosion-proof electric heater comprises a heating tank body (1), a tubular electric heater main body (2), a first explosion-proof partition plate (3), a sealing tank cover (8), an electric heater cable (17) and a high-temperature-resistant remote-transmission magnetic flap liquid level meter (19), and is characterized in that a second explosion-proof partition plate (4) is installed on the heating tank body (1), an explosion-proof isolation cavity (5) and a heating tank cavity (6) are separated by the second explosion-proof partition plate (4) in the heating tank body (1), the tubular electric heater main body (2) is fixedly connected with the first explosion-proof partition plate (3), the tubular electric heater main body (2) is provided with a U-shaped electric heating pipe (7), the U-shaped electric heating pipe (7) penetrates through the first explosion-proof partition plate (3), the first explosion-proof partition plate (3) is connected with the second explosion-proof partition plate (4) through screws, a discharge port (13), a feed port (14) and a rupture disc flange group (15) are arranged in the heating tank cavity (6), the tubular electric heater main body (2) is connected with the electric heater cable (17) through screws, an inert gas filling joint (18) is filled in the electric heater cable (17), the high-temperature-resistant remote-transmission magnetic flap level gauge (19) is arranged on the heating tank body (1) to detect the liquid level of the heating tank cavity (6).
2. 2. The tank-type explosion-proof electric heater according to claim 1, wherein the connection part of the first explosion-proof partition board (3) and the second explosion-proof partition board (4) is subjected to sealing treatment through a high-temperature-resistant sealing rubber ring.
3. 3. The tank type explosion-proof electric heater as claimed in claim 1, wherein the joint of the heating tank body (1) and the sealing tank cover (8) is subjected to sealing treatment through a sealing rubber ring.
4. 4. The tank-type explosion-proof electric heater according to claim 1, wherein the heating tank body (1) and the sealing tank cover (8) are uniformly and fixedly provided with radiating fins (9), and the radiating fins (9) are paved in the explosion-proof isolation cavity (5) area.
5. 5. The tank-type explosion-proof electric heater according to claim 1, wherein an alumina ceramic heat insulation layer (10) is arranged in the heating tank cavity (6), the explosion-proof isolation cavity (5) is fixedly communicated with a one-way air inlet valve (11) and a one-way air outlet valve (12), and the one-way air inlet valve (11) and the one-way air outlet valve (12) are in threaded connection with sealing caps.
6. 6. The tank type explosion-proof electric heater according to claim 1, wherein guide plates (16) are uniformly arranged on the inner wall of the heating tank cavity (6), the guide plates (16) are arranged on the inner wall of the heating tank cavity (6) in a staggered mode, and the guide plates (16) are provided with through grooves corresponding to the U-shaped electric heating pipes (7).
7. 7. A tank-type explosion-proof electric heater as claimed in claim 1, wherein the die-casting sealing joint (18) is embedded with an alumina ceramic insulating ring, and high-temperature sealing glue is filled between the electric heater cable (17) and the insulating ring.
8. 8. A tank-type explosion-proof electric heater as claimed in claim 1, wherein the die-cast sealing joint (18) is connected with the heating tank body (1) through screws, and the joint is sealed.

Description

Tank-type explosion-proof electric heater Technical Field The utility model relates to the technical field of electric heaters, in particular to a tank type explosion-proof electric heater. Background The tank-type electric heater can heat liquid, the heating component of the tank-type electric heater can convert electric energy into heat energy, heat is transferred to the liquid through direct or indirect contact, a plurality of electric heating tubes are intensively installed and fixed on the tank wall or the tank cover through the flange, and the electric heating tube bundles are directly immersed in the liquid, so that the liquid in the tank can be heated. The existing tank-type electric heater has the following defects that when flammable solvents, oil gas and the like are heated, flammable steam volatilizes from a tank opening, if a junction box is not subjected to isolation treatment, the spark can ignite the volatilized or leaked flammable steam, therefore, the tank-type anti-explosion electric heater is provided, the electric spark can be physically isolated, so that the explosion risk caused by the electric spark is avoided, an explosion propagation path is blocked by a cavity-dividing design, the ignition possibility of the electric spark is eliminated in an inert environment, the explosion-proof performance of the tank-type electric heater can be further improved, a liquid level meter is arranged, the water level of an inner hole of the explosion-proof electric heater can be detected, the electric heater or liquid adding can be timely closed when a worker finds that the liquid level is lower, and dry combustion is prevented, Disclosure of utility model The utility model provides a tank type explosion-proof electric heater, which solves the explosion risk caused by dry combustion and electric spark, breaks through the traditional integral explosion-proof thought, and seals a dangerous source electric connector in an inert environment, thereby further improving the explosion-proof performance of the tank type electric heater. The tank type explosion-proof electric heater comprises a heating tank body, a tubular electric heater main body, a first explosion-proof partition plate, a sealing tank cover, an electric heater cable and a high-temperature-resistant remote-transmission magnetic flap liquid level meter, wherein the heating tank body is provided with a second explosion-proof partition plate, the heating tank body is divided into an explosion-proof isolation cavity and a heating tank cavity through the second explosion-proof partition plate, the tubular electric heater main body is fixedly connected with the first explosion-proof partition plate, the tubular electric heater main body is provided with a U-shaped electric heating pipe, the U-shaped electric heating pipe penetrates through the first explosion-proof partition plate, the first explosion-proof partition plate is connected with the second explosion-proof partition plate through screws, the heating tank body is connected with the sealing tank cover through screws, the heating tank cavity is provided with a discharge port, a feed port and a rupture disc flange group, a wiring end of the tubular electric heater main body is connected with the electric heater cable, the electric heater cable is provided with a die-casting sealing joint, inert gas is filled in the explosion-proof isolation cavity, and the high-temperature-resistant remote-transmission magnetic flap liquid level meter is arranged in the heating tank body to detect liquid level of the heating tank cavity. On the basis of the technical scheme, the utility model can be improved as follows. Further, the junction of the first explosion-proof partition plate and the second explosion-proof partition plate is subjected to sealing treatment through a high-temperature-resistant sealing rubber ring, the first explosion-proof partition plate and the second explosion-proof partition plate can be combined to separate an explosion-proof isolation cavity and a heating tank cavity, and a U-shaped electric heating pipe of the tubular electric heater main body can be inserted into the heating tank cavity to heat a medium. Further, the joint of the heating tank body and the sealing tank cover is subjected to sealing treatment through the sealing rubber ring, so that the inert gas in the explosion-proof isolation cavity can be ensured to protect the environment. Further, the heating tank body and the sealing tank cover are uniformly and fixedly provided with radiating fins, and the radiating fins are paved in the explosion-proof isolation cavity area, so that the internal explosion-proof isolation cavity can be radiated. Further, the heating tank cavity is internally provided with an alumina ceramic heat preservation layer, the explosion-proof isolation cavity is fixedly communicated with a one-way air inlet valve and a one-way air outlet valve, the one-way air inlet valve and the one-way air