An integral immersion heater

Abstract

The present invention relates to a tubular electric heating tube, in particular to an integral immersion heater. It includes a heating element; there are two heating elements, namely a first heating element and a second heating element respectively; the first heating element includes two parts, a straight tube section at the front end and a double helix tube section at the rear end, and the second heating element is a double helix tube, and the second heating element is sleeved on the straight tube section of the first heating element; the front ends of the first heating element and the second heating element are fixedly arranged on the same flange and are connected to wires, a bracket is arranged at the rear part of the flange for supporting the heating element, and a magnet is arranged at the bottom of the bracket. The spiral heating element of this product effectively increases the heating area, reduces the surface load of the tube, and makes the heating medium be heated more evenly; the integral immersion heater is installed by adsorbing the magnet at the bottom with the bottom of the container, eliminating the need for openings and bolt arrangements on the side of the container, greatly saving the installation space and installation time. This kind of structure provides a better solution for heating in some special fields.

Description

Technical Field

[0001] The present invention relates to a tubular electric heating tube, and more particularly to an integral immersion heater. Background Art

[0002] Currently, the most widely used fluid heater is an immersion heating tube. Generally, the internal heating element of such a heater is composed of several U-shaped tubes, and the U-shaped tubes are welded to a flange. Then, the flange is bolted to the box body of the medium to be heated. The immersion heater immerses the heating part into the heating fluid, and the outgoing wire part is distributed above the flange surface, and the flange is installed outside the heating fluid. That is, the heater is divided into two parts, the heating part is inside the fluid, and the outgoing wire part is outside the fluid. The defects existing in the prior art are that the heater must be opened on the heating container during installation to fix and install the heater, which not only occupies space but also wastes installation time. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to optimize the heater in the prior art and provide an integral immersion heater.

[0004] To solve the problems existing in the prior art, the present invention is realized by the following technical solutions:

[0005] Provide an integral immersion heater, including heating elements; there are two heating elements, namely a first heating element and a second heating element; the first heating element includes two parts, a straight tube section at the front end and a double spiral tube section at the rear end, the second heating element is a double spiral tube, and the second heating element is sleeved on the straight tube section of the first heating element; the front ends of the first heating element and the second heating element are fixedly arranged on the same flange and are connected to wires, a bracket is arranged at the rear of the flange for supporting the heating elements, and a magnet is arranged at the bottom of the bracket.

[0006] As an improvement, the bracket includes a plurality of support bars along the axial direction of the heating element and distributed around the heating element, and the support bars are fixed by a plurality of fixing rings arranged outside the heating element.

[0007] As an improvement, a junction box is further arranged between the flange and the wire, a temperature control device is arranged in the junction box, and the wire is connected to the temperature control device; a gland is further arranged outside the rear end of the wire.

[0008] As an improvement, a sheath is arranged at the contact part between the gland and the wire for sealing.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The spiral heating element effectively increases the heating area, reduces the tube surface load, and makes the heating medium heated more evenly;

[0011] 2. In terms of installation, the integral immersion heater is installed by using the magnet at the bottom to adsorb to the bottom of the container, eliminating the need for openings and bolt arrangements on the side of the container, greatly saving installation space and installation time. This structure provides a better solution for heating in some special fields.

[0012] 3. The integral immersion heater is equipped with a temperature control device inside, which can effectively control the temperature of the heating fluid and avoid the risk of overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the present invention.

[0014] Figure 2 It is a schematic structural diagram of the first heating element of the present invention.

[0015] Figure 3 It is a schematic structural diagram of the second heating element of the present invention.

[0016] In the figure: 1 - junction box; 2 - flange; 3 - bracket; 4 - first heating element; 5 - second heating element; 6 - wire; 7 - gland; 8 - temperature control device; 9 - magnet. DETAILED DESCRIPTION OF THE INVENTION

[0017] Combined with the accompanying drawings, the present invention will be described in detail below through specific implementation examples.

[0018] An integral immersion heater includes heating elements. There are two heating elements, namely the first heating element 4 and the second heating element 5 respectively. The first heating element 4 includes a straight pipe section at the front end and a double spiral pipe section at the rear end. The second heating element 5 is a double spiral pipe, and the second heating element 5 is sleeved on the straight pipe section of the first heating element 4. The front ends of the first heating element 4 and the second heating element 5 are fixedly arranged on the same flange 2 and are connected to the wire 6. A bracket 3 is arranged at the rear of the flange 2 for supporting the heating elements, and a magnet 9 is arranged at the bottom of the bracket 3. A junction box 1 is also arranged between the flange 2 and the wire 6, and a temperature control device 8 is arranged in the junction box 1. The wire 6 is connected to the temperature control device 8. A gland 7 is also arranged outside the rear end of the wire 6.

[0019] The bracket 3 includes a plurality of support bars along the axial direction of the heating element and distributed around the heating element, and the support bars are fixed by a plurality of fixing rings arranged outside the heating element. A sheath is arranged at the contact part of the gland 7 and the wire 6 for sealing. To achieve the sealing performance after immersion in the liquid.

[0020] Magnet 9 is adsorbed on the bottom of the container to fix the heater. The integral immersion heater can be directly installed on the bottom of the heating fluid container without drilling holes on the side and setting screws, which is more convenient to install. This structure provides a better solution for the heating of some hydraulic stations. The upper part of flange 2 is welded to junction box 1, and high-temperature resistant resin glue is used to connect flange 2 and junction box 1 to avoid leakage. Gland 7 is installed on the upper part of junction box 1. Gland 7 is used for the output of wire 6. Gland 7 and junction box 1 are welded together using nickel-based brazing, and the contact part between wire 6 and Gland 7 is bonded with a high-temperature resistant silicone. Wire 6 is connected to the fluid container using an aviation plug to ensure airtightness.

[0021] Finally, it should be noted that the above examples are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments and is subject to numerous variations. All variations that can be directly derived or conceived by a person of ordinary skill in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. An integral immersion heater, comprising a heating element; characterized in that, There are two heating elements, namely the first heating element and the second heating element; the first heating element includes a straight pipe section at the front end and a double spiral pipe section at the rear end, and the second heating element is a double spiral pipe, which is sleeved on the straight pipe section of the first heating element; the front ends of the first heating element and the second heating element are fixedly arranged on the same flange and are connected to wires; a bracket for supporting the heating element is arranged at the rear of the flange, and a magnet is arranged at the bottom of the bracket to adsorb the integral immersion heater on the bottom of the container to achieve fixed installation; a junction box and a gland are sequentially arranged at the front of the flange, a temperature control device is arranged in the junction box, the wires are connected to the temperature control device and led out from the gland; the wires are connected to the container through an aviation plug; The integral immersion heater is sealed in the following way to achieve the sealing performance of immersion in liquid: the flange is welded to the junction box and sealed with a high-temperature resistant resin adhesive; the junction box and the gland are welded by nickel-based brazing, and a sheath is arranged at the contact part between the gland and the wire, and sealed by bonding with high-temperature resistant silica gel.

2. The integral immersion heater according to claim 1, wherein, The bracket includes a plurality of support bars arranged along the axial direction of the heating element and distributed around the heating element, and the support bars are fixed by a plurality of fixing rings arranged outside the heating element.

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