Fluid explosion-proof electric heater

Abstract

The utility model discloses a kind of fluid explosion-proof electric heater, it is related to electric heater technical field, including electric heater body, the electric heater body includes heating shell, heating pipe is installed in the inside of the heating shell, the left side outer wall of the heating shell is fixedly installed with explosion-proof terminal by bolt, the explosion-proof terminal is mutually electrically connected with heating pipe, the inside welding of liquid inlet pipe is the water guide channel of helical shape, the right side outer wall of the liquid inlet pipe is equipped with filter tube, the inside symmetry of the filter tube is equipped with filter screen. The utility model can filter the liquid of entering by the cooperation of the filter tube, filter screen and the connecting flange, prevent impurity from entering and accumulating in the inside of heating shell, further affect the stable operation of equipment, while under the assistance of water guide channel, avoid the impact force of liquid when entering heating shell inside to heating pipe is larger, to affect the stability of long-term operation of equipment.

Description

Technical Field

[0001] This utility model relates to the field of electric heater technology, specifically a fluid explosion-proof electric heater. Background Technology

[0002] A fluid electric heater is a device that converts electrical energy into heat energy to heat a liquid medium. Commonly used fluid electric heaters are those with integrated heat pumps. A heat pump is a device that transfers heat energy from a low-temperature heat source to a high-temperature heat source, thus achieving both cooling and heating effects. When a heat pump is used in an electric heater, the heating process is as follows: the liquid medium in the pipeline is pressurized and then enters the fluid electric heater for heating. After heating, the liquid medium flows out of the fluid electric heater through the outlet and then enters the subsequent process stage. In real life, fluid electric heaters are widely used in chemical, military, petroleum, natural gas, offshore platforms, ships, mining areas, and other places requiring explosion protection. Therefore, fluid electric heaters need to have good explosion-proof performance to reduce the probability of explosions during the heating process.

[0003] Currently available explosion-proof electric heaters suffer from significant impact on the heating element when fluid flows into them, affecting the stability of the heating element over time. Furthermore, impurities in the fluid tend to accumulate inside the heater, also impacting stable operation. Therefore, those skilled in the art have developed a fluid explosion-proof electric heater to address the problems mentioned in the background. Utility Model Content

[0004] The purpose of this utility model is to provide a fluid explosion-proof electric heater to solve the problems mentioned in the background art, such as the large impact on the heating tube when the fluid medium flows into the electric heater, the impact on the stability of the heating element after long-term use, and the easy accumulation of impurities in the fluid inside the heater, which also affects the stable operation of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fluid explosion-proof electric heater, comprising an electric heater body, the electric heater body including a heating shell, a heating tube installed inside the heating shell, an inlet pipe fixedly and through the right outer wall of the heating shell, an outlet pipe fixedly and through the bottom left end of the outer peripheral side wall of the heating shell, a circular ring welded at the center of the outer peripheral side wall of the heating shell, support plates fixedly installed at both ends of the bottom of the outer peripheral side wall of the circular ring, an explosion-proof connector fixedly installed on the left outer wall of the heating shell by bolts, the explosion-proof connector being electrically connected to the heating tube, a spiral water guiding channel welded inside the inlet pipe, a filter pipe provided on the right outer wall of the inlet pipe, and filter screens symmetrically arranged inside the filter pipe.

[0006] As a further embodiment of this utility model: a circular cavity is provided inside the circular ring, an inlet pipe communicating with the circular cavity is fixed to the top left end of the outer peripheral sidewall of the circular ring, and a drain pipe communicating with the circular cavity is fixed to the bottom right end of the outer peripheral sidewall of the circular ring.

[0007] As a further improvement of this utility model: circular grooves are provided at the left and right ends of the inside of the filter tube, and the two filter screens are respectively inserted into the inside of the two circular grooves.

[0008] As a further improvement of this utility model, one end of the liquid inlet pipe and the filter pipe are connected by a flange.

[0009] As a further improvement of this utility model, the diameter of the filter holes on the first filter cover is larger than the diameter of the filter holes on the second filter cover.

[0010] As a further improvement of this utility model: a receiving block is fixedly installed on the outer bottom surface of the two support plates, and a through screw hole is opened at each of the four corners of the outer top surface of the two receiving blocks.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by using the combination of filter pipe, filter screen and connecting flange, the incoming liquid can be filtered to prevent impurities from entering and accumulating inside the heating shell, thereby affecting the stable operation of the equipment. At the same time, with the assistance of the water guide vanes, the impact force on the heating pipe when the liquid enters the heating shell is not too large, thus affecting the long-term stability of the equipment. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the electric heater device of this utility model assembled with external pipelines;

[0013] Figure 2 This is a three-dimensional structural diagram of the electric heater device of this utility model;

[0014] Figure 3 This is a three-dimensional cross-sectional structural diagram of the electric heater device of this utility model;

[0015] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A.

[0016] In the diagram: 1. Electric heater body; 2. Heating shell; 3. Heating tube; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Circular ring; 7. Support plate; 8. Explosion-proof connector; 9. Water guide vane; 10. Filter pipe; 11. Filter screen; 12. Guide plate; 13. Circular cavity; 14. Water inlet pipe; 15. Drain pipe; 16. Circular groove; 17. Receiving block; 18. Screw hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 In this embodiment of the utility model, there is an electric heater body 1, which includes a heating shell 2. A heating tube 3 is installed inside the heating shell 2. An inlet pipe 4 is fixed and connected to the right outer wall of the heating shell 2. An outlet pipe 5 is fixed and connected to the bottom left end of the outer peripheral side wall of the heating shell 2. An explosion-proof connector 8 is fixedly installed on the left outer wall of the heating shell 2 by bolts. The explosion-proof connector 8 is electrically connected to the heating tube 3. A spiral water guide vane 9 is welded inside the inlet pipe 4. A filter pipe 10 is provided on the right outer wall of the inlet pipe 4. A filter screen 11 is symmetrically provided inside the filter pipe 10.

[0019] Specifically, the heating shell 2 has multiple guide plates 12 arranged in parallel and intersecting directions inside. The multiple guide plates 12 make the inner cavity of the heating shell 2 form an S-shaped flow channel. The left and right ends of the filter tube 10 are provided with circular grooves 16. Two filter screens 11 are respectively inserted into the two circular grooves 16. The liquid inlet pipe 4 is connected to the filter tube 10 by flanges.

[0020] In this embodiment: during use, the two sets of filter screens 11 are first inserted into the two circular grooves 16. Then, the filter tube 10 is connected to the inlet pipe 4 and the external pipe via flanges. This not only ensures sealing but also limits and fixes the two sets of filter screens 11 (and facilitates later cleaning and replacement of the filter screens 11). After that, the liquid is transported to the filter tube 10 through the external pipe, and the impurities and dirt inside are intercepted and filtered by the two sets of filter screens 11. Then, the liquid flows into the inlet pipe 4 and enters the heating element along the spiral guide vanes 9. Inside the housing 2, the explosion-proof connector 8 is simultaneously energized to heat the heating tube 3. At this time, the liquid, under the obstruction of the guide plate 12, moves up and down along the heater and to the right along the flow channel (the flow channel extends the time the liquid spends inside the heating housing 2 to improve heating efficiency), allowing the heating tube 3 to heat the liquid. Since the outlet pipe 5 is connected to the external pipe by flanges, the liquid that has absorbed heat flows out along the outlet pipe 5, thus achieving the purpose of liquid heating. Finally, the liquid is transported to the area that needs to be heated through the external pipe.

[0021] Specifically, a circular ring 6 is welded to the center of the outer peripheral sidewall of the heating shell 2. Support plates 7 are fixedly installed at both ends of the bottom of the outer peripheral sidewall of the circular ring 6. A circular cavity 13 is opened inside the circular ring 6. A water inlet pipe 14 communicating with the circular cavity 13 is fixed to the top left end of the outer peripheral sidewall of the circular ring 6. A drain pipe 15 communicating with the circular cavity 13 is fixed to the bottom right end of the outer peripheral sidewall of the circular ring 6. A receiving block 17 is fixedly installed on the outer bottom surface of the two support plates 7. A through screw hole 18 is opened at each of the four corners of the outer top surface of the two receiving blocks 17.

[0022] In this embodiment: by tightening the bolts in the screw hole 18, the receiving block 17 can be fixed in the working area, thereby ensuring the stability of the equipment during subsequent operation and facilitating quick disassembly and relocation later. At the same time, by connecting the water inlet pipe 14, the drain pipe 15, and the external pipe to each other with flanges, water can be transported into the circular cavity 13 and discharged through the drain pipe 15. The waste heat of the heating shell 2 is then used to heat the water, thereby realizing the reuse of waste heat and saving energy.

[0023] In operation, the equipment is first fixed in the working area using the support plate 7 and the receiving block 17. Then, external pipes are connected to the inlet pipe 4, outlet pipe 5, water inlet pipe 14, and drain pipe 15 via flanges. The liquid is then transported to the filter pipe 10 through the external pipes, where the filter screen 11 filters out impurities and dirt. The liquid then flows into the inlet pipe 4 and enters the heating shell 2 along the spiral guide vanes 9. Simultaneously, the explosion-proof connector 8 is used to energize and heat the heating tube 3. At this time, the liquid moves to the right along the flow channel under the obstruction of the guide plate 12, allowing the heating tube 3 to heat the liquid. The liquid then flows out along the outlet pipe 5. At the same time, water is fed into the circular cavity 13 through the water inlet pipe 14 through the external pipes and discharged through the drain pipe 15. The residual heat of the heating shell 2 is then used to heat the water, thus achieving waste heat reuse and saving energy.

[0024] It should be noted that the explosion-proof connector 8 is an existing electrical component used to electrically connect external lines to the heating tube 3. Its working principle will not be described in this article. The flange connection is a conventional technical means that can ensure the sealing stability of liquid flow. All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art, so the control method and circuit connection will not be explained in detail.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fluid explosion-proof electric heater, comprising an electric heater body (1), characterized in that, The electric heater body (1) includes a heating shell (2), a heating tube (3) is installed inside the heating shell (2), an inlet pipe (4) is fixed and connected to the right outer wall of the heating shell (2), an outlet pipe (5) is fixed and connected to the bottom left end of the outer peripheral side wall of the heating shell (2), a circular ring (6) is welded at the center of the outer peripheral side wall of the heating shell (2), support plates (7) are fixedly installed at both ends of the bottom of the outer peripheral side wall of the circular ring (6), an explosion-proof connector (8) is fixedly installed on the left outer wall of the heating shell (2) by bolts, the explosion-proof connector (8) is electrically connected to the heating tube (3), a spiral water guide vane (9) is welded inside the inlet pipe (4), a filter pipe (10) is provided on the right outer wall of the inlet pipe (4), and a filter screen (11) is symmetrically provided inside the filter pipe (10).

2. The fluid explosion-proof electric heater according to claim 1, characterized in that, The heating shell (2) has a plurality of guide plates (12) arranged in parallel and intersecting directions, which make the inner cavity of the heating shell (2) form an S-shaped drainage channel.

3. The fluid explosion-proof electric heater according to claim 1, characterized in that, The circular ring (6) has a circular cavity (13) inside. A water inlet pipe (14) that communicates with the circular cavity (13) is fixed at the top left end of the outer peripheral sidewall of the circular ring (6). A drain pipe (15) that communicates with the circular cavity (13) is fixed at the bottom right end of the outer peripheral sidewall of the circular ring (6).

4. A fluid explosion-proof electric heater according to claim 1, characterized in that, The filter tube (10) has circular grooves (16) at both ends inside, and the two filter screens (11) are respectively inserted into the two circular grooves (16).

5. A fluid explosion-proof electric heater according to claim 1, characterized in that, The inlet pipe (4) and the filter pipe (10) are connected by flanges.

6. A fluid explosion-proof electric heater according to claim 1, characterized in that, The outer bottom surfaces of the two support plates (7) are fixedly installed with receiving blocks (17), and the four corners of the outer top surfaces of the two receiving blocks (17) are provided with through screw holes (18).

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