CN211290574U - Explosion-proof electric heating rod - Google Patents
Explosion-proof electric heating rod Download PDFInfo
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- CN211290574U CN211290574U CN201922405895.8U CN201922405895U CN211290574U CN 211290574 U CN211290574 U CN 211290574U CN 201922405895 U CN201922405895 U CN 201922405895U CN 211290574 U CN211290574 U CN 211290574U
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Abstract
The utility model relates to an explosion-proof electric heating rod, belonging to the electric heating equipment, wherein the heating rod body is composed of a heating wire component and a sleeve thereof; the electric heating wire assembly is composed of an insulating magnetic bead, a connecting rod and a resistance wire which are fixedly connected in sequence from top to bottom, and the upper end of the connecting rod penetrates through the center of the insulating magnetic bead and extends to be a wiring leading-out end; the sleeve is a metal tube with an opening at the top end, the metal tube is coaxially sleeved outside the electric heating wire assembly, the insulating magnetic bead seat seals the electric heating wire assembly in the sleeve at the opening of the sleeve, and the wiring leading-out end is connected with an external power supply. The utility model discloses an explosion-proof electrical heating rod, the structure is solid, and bending strength is high, and is small and exquisite, sealed, explosion-proof, and the electrical heating rod generates heat evenly, and the surface heat load is low, the reliable operation, long service life. The heating pipe has the advantages that reactive loss is avoided, the heat efficiency is high, the design that the installation cap and the clamping ring can be flexibly disassembled is adopted, the heating pipe is convenient and fast to overhaul and replace, labor and time are saved, and loss is reduced.
Description
Technical Field
The utility model belongs to the electrical heating equipment specifically is a relate to an explosion-proof electrical heating stick.
Background
The explosion-proof electric heating rod is mainly used for the anti-freezing, 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. In the prior art, steam or hot water is mostly adopted as a disc tank type heater of a heating medium, and a small part of electric heating devices also exist, but the disc tank type heater has the defects of high accident rate, difficulty in installation, overhaul and maintenance, high energy consumption and the like. In addition, because the structure of the explosion-proof electric heating rod used in the existing electric heating device is unreasonable, when the explosion-proof electric heating rod is used, a cylindrical container body is required to be provided with an inlet and an outlet, one end of the explosion-proof electric heating rod is provided with an explosion-proof chamber, the explosion-proof chamber and the container body are fixedly welded through a group of sleeves, the electric heating rod penetrates into the container body through the explosion-proof chamber through a sleeve, and a lead penetrates into the end of an electric heating device through the. When the electric heating device works, the electric heating device is electrified to heat the fluid entering the container body and then output the fluid through the outlet. In order to avoid heat transfer to the explosion-proof chamber and to avoid the insulated cable from being burnt, a water cooling cavity is welded at one end of the container body, which is close to the explosion-proof chamber, 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. The heat energy loss is larger in the use of the existing explosion-proof electric heater, the reason is that the water cooling takes away much heat, and a plurality of electric heating devices penetrate through each sleeve pipe, so that a large gap exists inside the sleeve pipe, medium fluid entering the sleeve pipe forms convection circulation, the heat insulation effect is not good, and the heat insulation is influenced.
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 electric heating rod, which comprises a heating rod body and an installation flange plate, wherein the heating rod body consists of a heating wire assembly and a sleeve thereof; the electric heating wire assembly is composed of an insulating magnetic bead, a connecting rod and a resistance wire which are fixedly connected in sequence from top to bottom, and the upper end of the connecting rod penetrates through the center of the insulating magnetic bead and extends to be a wiring leading-out end; the sleeve is a metal tube with an opening at the top end, the sleeve is coaxially sleeved outside the electric heating wire assembly, the insulating magnetic bead seat is positioned at the opening of the sleeve to seal the electric heating wire assembly in the sleeve, and the wiring leading-out end is connected with an external power supply; 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 mounting flange plate is provided with a through hole, a clamping ring is embedded in the through hole, the clamping ring is provided with a lead hole, the diameter of the clamping ring and the diameter of the mounting cap as well as the diameter of the string line hole are matched with each other in a coaxial mode, and the periphery of the clamping ring is provided with a clamping groove which is clamped with the convex edge.
As a further improvement, the resistance wire is wound with the connecting rod and then spot-welded.
As a further improvement of the utility model, the top end of the insulating magnetic bead is circumferentially sealed and then fastened with the insulating magnetic bead.
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 sleeve is filled with magnesia powder.
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 has the advantages that the structure is solid, the electric heating rod generates heat uniformly, the surface heat load is low, when the explosion-proof electric heating rod is used for heating, the water cooling structure of the original device can be cancelled, the fluid medium is effectively prevented from forming convection between the water cooling structure and the water cooling structure, thereby further reducing heat loss and enhancing the heat insulation effect; the upper end of the heater adopts a copper connecting piece, so that the upper part of the heater does not generate heat, and the heat is prevented from being transferred into the junction box. This electric heating rod reliable operation, long service life does not have reactive loss, and the thermal efficiency is high, adopts this kind of design that can dismantle in a flexible way of installation cap and snap ring, makes maintenance and change convenient and fast more to the heating pipe, uses manpower sparingly, man-hour, reduces the loss.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of the heating rod body and a mounting flange plate of the present invention assembled together;
FIG. 2 is a schematic view of the assembly of the mounting cap and the snap ring of the present invention;
fig. 3 is a sectional view of the heating wire assembly of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The utility model discloses an explosion-proof electrical heating rod, including heating rod body 1 and mounting flange board 2. The heating rod body 1 consists of an electric heating wire assembly and a sleeve 4 thereof; the electric heating wire assembly is composed of an insulating magnetic bead 6, a connecting rod 5 and a resistance wire 3 which are fixedly connected in sequence from top to bottom, the connecting rod 5 is made of H62 copper, the electric conductivity is good, heat is not generated, the opposite part of the rod body is not generated, the resistance wire 3 and the connecting rod 5 are wound and then spot welded, and the upper end of the connecting rod 5 penetrates through the center of the insulating magnetic bead 6 and extends to form a wiring leading-out end 10; the sleeve 4 is made of a seamless steel pipe, the top end of the sleeve is provided with an opening, the metal pipe is coaxially sleeved outside the electric heating wire assembly, the insulating magnetic bead 6 is seated at the opening of the sleeve 4 to seal the electric heating wire assembly in the sleeve 4, and the lower surface of the insulating magnetic bead 6 and the top end of the sleeve 4 can be sealed and fastened by glue. The sleeve 4 is filled with magnesia powder 13, and the terminal 10 is connected with an external power supply. The top of the sleeve 4 is detachably connected with a mounting cap 7 with a lead hole, the inner circumferential wall of the mounting cap 7 is provided with internal threads, the outer circumferential wall of the upper part of the sleeve 4 matched with the internal threads is provided with external threads, and the internal threads and the external threads are connected through threads. The outer edge of the mounting cap 7 is circumferentially provided with outward convex edges 11 at intervals; the mounting flange plate 2 is provided with a through hole 9, a snap ring 8 is embedded in the through hole 9, the snap ring 8 is provided with a lead hole, the diameter of the snap ring 8 and the diameter of the mounting cap 7 are matched with the diameter of the string wire hole in the same axis, and the periphery of the snap ring is internally provided with a clamping groove 12 which is clamped with a convex edge 11.
The utility model discloses an explosion-proof electrical heating rod, this internal closed heater strip of having of heater makes the flame proof type together with the sleeve pipe. Meanwhile, the anti-explosion temperature controller is matched with an anti-explosion temperature controller for use, meets the use requirements of heating and heat preservation of various storage tanks for storing petroleum and products thereof and oil pipelines, and has an anti-explosion grade of EXd II B T1-T6. The electric heating tube is uniformly distributed with high-temperature resistance wires in the high-temperature resistant stainless steel seamless tube, and the gap part is densely filled with crystallized magnesia powder with good heat-conducting property and insulating property. The structure is advanced, the heat efficiency is high, the heat is uniform, when current passes through the high-temperature resistance wire, 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 purpose of heating is achieved.
Claims (6)
1. The explosion-proof electric heating rod comprises a heating rod body (1) and an installation flange plate (2), and is characterized in that the heating rod body (1) consists of an electric heating wire assembly and a sleeve (4) thereof; the electric heating wire assembly is composed of an insulating magnetic bead (6), a connecting rod (5) and a resistance wire (3) which are fixedly connected from top to bottom in sequence, wherein the upper end of the connecting rod (5) penetrates through the center of the insulating magnetic bead (6) and extends to form a wiring leading-out end (10); the sleeve (4) is a metal tube with an opening at the top end, the metal tube is coaxially sleeved outside the electric heating wire assembly, the insulating magnetic bead (6) is positioned at the opening of the sleeve (4) to seal the electric heating wire assembly in the sleeve (4), and the wiring leading-out end (10) is connected with an external power supply; the top of the sleeve (4) is detachably connected with a mounting cap (7) with a lead hole, and outward convex edges (11) are arranged at intervals on the periphery of the outer edge of the mounting cap (7); the mounting flange plate (2) is provided with a through hole (9), a snap ring (8) is embedded in the through hole (9), a lead hole is formed in the snap ring (8), the diameter and the lead hole of the snap ring (8) are matched with the diameter and the string line hole of the mounting cap (7) in the same shaft, and a clamping groove (12) which is clamped with the convex edge (11) is formed in the circumferential direction.
2. An explosion-proof electrical heating rod as claimed in claim 1, characterized in that the resistance wire (3) and the connecting rod (5) are wound and then spot-welded.
3. An explosion-proof electric heating rod as claimed in claim 1, characterized in that the lower side of the insulating magnetic bead (6) is sealed and fastened with the top circumference of the sleeve (4).
4. An explosion-proof electrical heating rod as claimed in claim 1, characterized in that the sleeve (4) is made of seamless steel tubing.
5. Explosion-proof electrical heating rod according to claim 1, characterized in that the sleeve (4) is filled with magnesium oxide powder (13).
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 (4) which is fitted with it, both of which are screwed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922405895.8U CN211290574U (en) | 2019-12-28 | 2019-12-28 | Explosion-proof electric heating rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922405895.8U CN211290574U (en) | 2019-12-28 | 2019-12-28 | Explosion-proof electric heating rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211290574U true CN211290574U (en) | 2020-08-18 |
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ID=72021077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922405895.8U Active CN211290574U (en) | 2019-12-28 | 2019-12-28 | Explosion-proof electric heating rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211290574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216890A (en) * | 2021-11-23 | 2022-03-22 | 合肥原位科技有限公司 | High-temperature Raman/X-ray diffraction in-situ spectrum testing device |
| CN114228105A (en) * | 2021-12-17 | 2022-03-25 | 广东博事达新材料有限公司 | Double-screw extruder |
-
2019
- 2019-12-28 CN CN201922405895.8U patent/CN211290574U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216890A (en) * | 2021-11-23 | 2022-03-22 | 合肥原位科技有限公司 | High-temperature Raman/X-ray diffraction in-situ spectrum testing device |
| CN114228105A (en) * | 2021-12-17 | 2022-03-25 | 广东博事达新材料有限公司 | Double-screw extruder |
| CN114228105B (en) * | 2021-12-17 | 2023-11-21 | 广东博事达新材料有限公司 | Double-screw extruder |
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