Water and electricity integrated skid-mounted electric heating device

Abstract

The utility model relates to a water and electricity integrated skid-mounted electric heating device, which comprises a containerized electric heating pipe group, a horizontal container, an outer wrapping heat preservation, a base and a strong and weak electricity cabinet, the containerized electric heating pipe group is directly inserted from the front part of the horizontal container, and the strong and weak electricity cabinet and the horizontal container are arranged on the base side by side in a left-right manner. A partition wall is arranged between the horizontal container and the strong and weak electric cabinet and is higher than the strong and weak electric cabinet; according to the utility model, the integrated electric heating tube group is connected with the horizontal container through the flange to form the electric heater, and the electric heater and other parts such as the strong and weak electric cabinet are skid-mounted on the base, so that water and electricity integration is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating boiler equipment, in particular to a water-electricity integrated skid-mounted electric heating device. Background Art

[0002] A resistance-type electric heating boiler is a device that converts electrical energy into heat energy through electric heating tubes. The most commonly used type of boiler on the market is a small, low-voltage electric heating tube. Multiple groups of these tubes are connected in parallel and inserted into a container. When powered, they heat water to produce hot water or steam.

[0003] Current resistance electric heaters all use a low-voltage power supply of 220-380V. A single set of electric heating tubes is generally 5-60kW. When the load is large, multiple sets of electric heating tubes are inserted in parallel into the container for heating. In addition, the following problems still exist during operation:

[0004] The electric heating tube has no insulation. For equipment that produces steam, the medium temperature is high and the terminal temperature is high, so forced cooling fans are needed to cool it down, which increases energy consumption to a certain extent.

[0005] When multiple sets of low-power flanges are used to connect electric heating tubes, multiple sets of flange sockets are set on the surface of the container. The container equipment requires a larger space to place the electric heating tubes. Especially for high-power equipment, the size and volume of the container will be larger, which also increases the surface area to a certain extent and increases the heat dissipation loss.

[0006] Generally, for large electric heaters, the high-voltage cabinet and the electric heater are placed separately and need to be connected through a cable trench or bridge. Moreover, due to the need to control the load, the connecting cables between the two generally require more than 10 groups of cables, resulting in a very large cable trench or bridge. All of these have brought considerable trouble to the on-site installation, and the actual situation is not optimistic. Often, due to improper installation, the cable heat dissipation is poor, affecting the operation of the equipment.

[0007] When one set of electric heating tubes is damaged, the equipment needs to be stopped, the heated medium needs to be emptied, and the electric heating tubes need to be disassembled and replaced with new ones. The replacement process is time-consuming and very troublesome. Utility Model Content

[0008] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a water-electricity integrated skid-mounted electric heating device, which truly realizes the skid-mounted integration of large electric heaters and their ancillary system devices. The electric heater is composed of a container-type electric heating pipe group and a horizontal container connected by a flange, and is skid-mounted on the base together with other components such as strong and weak current cabinets to achieve water and electricity integration.

[0009] The purpose of this utility model is achieved in this way:

[0010] A skid-mounted electric heating device with integrated water and electricity comprises a containerized electric heating pipe group, a horizontal container, outer insulation, a base and a strong and weak current cabinet. The containerized electric heating pipe group is directly inserted from the front of the horizontal container. The strong and weak current cabinet and the horizontal container are arranged side by side on the base, and a partition wall is provided between the two. The partition wall is higher than the strong and weak current cabinet. The outer insulation is covered on the outside of the horizontal container.

[0011] Preferably, the assembled electric heating tube group includes a junction box, an air-cooling tube group, an insulation layer, a mounting flange cover and multiple groups of electric heating tubes. The air-cooling tube group is arranged between the junction box and the mounting flange cover. A thermal insulation layer is attached to the outside of the mounting flange cover. The electric heating tube passes through the mounting flange cover, the insulation layer and the air-cooling tube group in sequence and is connected to the wiring terminals in the junction box.

[0012] Preferably, the air-cooling pipe group is composed of multiple empty pipes, the two ends of the empty pipes are respectively welded to the junction box and the installation flange cover, the number of empty pipes in the air-cooling pipe group corresponds one-to-one to the number of electric heating pipes, and the electric heating pipe part in the empty pipe is a non-heating section.

[0013] Preferably, 10-20% of the electric heating tubes in the integrated electric heating tube group are used as spare electric heating tubes.

[0014] Preferably, the strong and weak current cabinets include a strong current cabinet and a weak current control cabinet, and one weak current control cabinet and three strong current cabinets are arranged side by side in front and back.

[0015] Preferably, the strong and weak current cabinet is also equipped with a single cooling cabinet air conditioner.

[0016] Preferably, a pressure measuring device, an auxiliary steam valve, a main steam valve and a safety valve are provided on the top of the horizontal container, and an inspection manhole, a drain valve, a water level and alarm device, and a water pump are provided at the rear.

[0017] Preferably, a ladder platform is also provided on the base.

[0018] The beneficial effects of the utility model are:

[0019] The modular electric heating tube group integrates multiple groups of electric heating tubes into one, eliminating the need for separate heat dissipation at the terminal ends of the electric heating tubes. This reduces the heat dissipation area on the surface of the horizontal container and improves the energy efficiency of the equipment.

[0020] The strong and weak current cabinets and horizontal containers are skid-mounted side by side on the base, optimizing the cable layout between the cabinets and various electrical components, thereby reducing the cost of purchasing and laying equipment cables and minimizing risks caused by cable problems.

[0021] 10-20% of the electric heating tubes in the integrated electric heating tube group are used as spare electric heating tubes. These electric heating tubes are not connected and do not heat. Only when some of the electric heating tubes in use are damaged, they can be replaced quickly and in time without affecting factory production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of a water-electricity integrated skid-mounted electric heating device according to the utility model.

[0023] Figure 2 This is a left view of a water-electricity integrated skid-mounted electric heating device according to the utility model.

[0024] Figure 3 This is a right side view of a water-electricity integrated skid-mounted electric heating device according to the utility model.

[0025] Figure 4 This is a rear view of a water-electricity integrated skid-mounted electric heating device according to the utility model.

[0026] Figure 5 This is a cross-sectional view of a water-electricity integrated skid-mounted electric heating device of the utility model.

[0027] Among them: 1. Integrated electric heating tube group; 11. Junction box; 12. Air-cooling tube group; 13. Insulation layer; 14. Installation flange cover; 15. Electric heating tube; 2. Horizontal container; 21. Pressure measuring device; 22. Auxiliary steam valve; 23. Main steam valve; 24. Safety valve; 25. Inspection manhole; 26. Drain valve; 27. Water level and alarm device; 28. Water pump; 3. External insulation; 4. Ladder platform; 5. Base; 6. Power and weak current cabinet; 61. Power current cabinet; 62. Weak current control cabinet; 63. Single cooling cabinet air conditioner; 64. Wiring base; 7. Partition wall. DETAILED DESCRIPTION

[0028] See also Figure 1-5 The utility model relates to a water-electricity integrated skid-mounted electric heating device, comprising a containerized electric heating pipe group 1, a horizontal container 2, an outer insulation 3, a ladder platform 4, a base 5, a strong and weak current cabinet 6, a partition wall 7 and supporting valves, instruments and pipelines, etc. The containerized electric heating pipe group 1 is directly inserted from the front of the horizontal container 2, the strong and weak current cabinet 6 and the horizontal container 2 are arranged side by side on the base 5, and a partition wall 7 is provided between the two. The partition wall 7 is higher than the strong and weak current cabinet 6, and the partition wall 7 is composed of a profile and a sandwich insulation steel plate, which can insulate and isolate the cabinet body of the strong and weak current cabinet from being sprayed or splashed by steam and water. The outer insulation 3 is coated on the outside of the horizontal container 2.

[0029] The assembled electric heating tube group 1 includes a junction box 11, an air-cooling tube group 12, an insulation layer 13, a mounting flange cover 14 and multiple groups of electric heating tubes 15. The air-cooling tube group 12 is arranged between the junction box 11 and the mounting flange cover 14. The outer side of the mounting flange cover 14 is affixed with an insulation layer 13. The electric heating tube 15 passes through the mounting flange cover 14, the insulation layer 13 and the air-cooling tube group 12 in sequence and is connected to the wiring terminal in the junction box 11. The air-cooling tube group 12 is composed of multiple empty tubes, and the two ends of the empty tubes are respectively welded to the junction box 11 and the mounting flange cover 14. The number of empty tubes in the air-cooling tube group 12 corresponds one-to-one to the number of electric heating tubes 15, and the electric heating tube part in the empty tube is a non-heating section. The heat-insulating layer 13 is used to isolate the heat dissipated by the mounting flange cover 14, which can isolate most of the temperature of the medium, and the air-cooling pipe group 12 is used to dissipate the small amount of heat conducted by the electric heating pipe into the air, so that the heat inside the furnace will not be transferred to the junction box, ensuring that the terminal blocks will not be in a high-temperature state, and ensuring that the terminal blocks will not overheat when the junction box is sealed and protected.

[0030] 10-20% of the electric heating tubes 15 in the integrated electric heating tube group 1 are used as spare electric heating tubes. These electric heating tubes are not connected and do not heat. Only when some of the electric heating tubes in use are damaged, they can be replaced quickly and in time without affecting factory production.

[0031] The strong and weak current cabinet 6 includes three strong current cabinets 61, a weak current control cabinet 62, a single cooling cabinet air conditioner 63 and a sealed wiring base 64. The various components are isolated from each other, and air passages are established, and the cabinet is sealed to the outside. The single cooling cabinet air conditioner 63 is used to ensure constant temperature and humidity in the cabinet. The cabinet body protection level is IP54, ensuring that the electrical control part is assembled into one with the equipment, and also ensuring safe operation.

[0032] A pressure measuring device 21, an auxiliary steam valve 22, a main steam valve 23 and a safety valve 24 are set on the top of the horizontal container 2, and an inspection manhole 25, a drain valve 26, a water level and alarm device 27, a water pump 28, etc. are set at the rear to ensure that all valves, instruments, pipelines and water pumps are concentrated at the top and rear of the horizontal container 2.

[0033] The ladder platform 4 is provided on the base 5 , and maintenance personnel can reach the top of the horizontal container 2 via the ladder platform 4 to perform maintenance on the valves of the horizontal container.

[0034] For a 1500kW, 6.5MPa, skid-mounted, integrated water-electric heating device, the internal space of a horizontal container containing one integrated electric heating tube group is approximately 2 cubic meters (based on a heat flux density of 3w / cm² and a total power of 1800kW). For a 30kW unit with 50 groups of electric heating tubes, the cumulative internal space required is approximately 2.5 cubic meters, saving a total of 25% of space. Therefore, the size of a horizontal container using an integrated electric heating tube group structure can be appropriately reduced, especially for hot water units, where the space saving is even more significant.

[0035] In addition to the above embodiments, the present invention also includes other implementation methods. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

Claims

1. A skid-mounted electric heating device with integrated water and electricity, characterized by: It includes a containerized electric heating pipe group, a horizontal container, external insulation, a base and a strong and weak current cabinet. The containerized electric heating pipe group is directly inserted from the front of the horizontal container. The strong and weak current cabinet and the horizontal container are arranged side by side on the base, and a partition wall is provided between the two. The partition wall is higher than the strong and weak current cabinet. The external insulation is covered on the outside of the horizontal container.

2. The hydroelectric integrated skid-mounted electric heating device according to claim 1, characterized in that: The assembled electric heating tube group includes a junction box, an air-cooling tube group, an insulation layer, a mounting flange cover and multiple groups of electric heating tubes. The air-cooling tube group is arranged between the junction box and the mounting flange cover. A thermal insulation layer is attached to the outside of the mounting flange cover. The electric heating tube passes through the mounting flange cover, the insulation layer and the air-cooling tube group in sequence and is connected to the wiring terminals in the junction box.

3. The hydroelectric integrated skid-mounted electric heating device according to claim 2, characterized in that: The air-cooling pipe group is composed of multiple empty pipes, the two ends of which are welded to the junction box and the installation flange cover respectively. The number of empty pipes in the air-cooling pipe group corresponds to the number of electric heating pipes, and the electric heating pipe part in the empty pipe is a non-heating section.

4. The water-electricity integrated skid-mounted electric heating device according to claim 1 or 2, characterized in that: 10-20% of the electric heating tubes in the assembled electric heating tube group are used as spare electric heating tubes.

5. The hydroelectric integrated skid-mounted electric heating device according to claim 1, characterized in that: The strong and weak current cabinets include a strong current cabinet and a weak current control cabinet. One weak current control cabinet and three strong current cabinets are arranged side by side in front and back.

6. The hydroelectric integrated skid-mounted electric heating device according to claim 1 or 5, characterized in that: The strong and weak current cabinet is also equipped with a single cooling cabinet air conditioner.

7. The hydroelectric integrated skid-mounted electric heating device according to claim 1, characterized in that: The top of the horizontal container is provided with a pressure measuring device, an auxiliary steam valve, a main steam valve and a safety valve, and the rear is provided with an inspection manhole, a drain valve, a water level and alarm device, and a water pump.

8. The hydroelectric integrated skid-mounted electric heating device according to claim 1, characterized in that: A ladder platform is also provided on the base.

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