High-voltage heater module for heat storage brick energy storage

Abstract

The utility model relates to the field of heat storage, in particular to a high-voltage heater module for energy storage of a heat storage brick, which comprises a support frame arranged in a brick body, an electricity inlet junction box and an electricity outlet junction box are arranged on the support frame, a plurality of parallel resistance tubes are arranged in the support frame at intervals, and the end parts of the resistance tubes are sleeved with electrode connecting plates; and the plurality of resistance tubes are connected in series through the plurality of electrode connecting plates and are conducted with the power inlet junction box and the power outlet junction box. The resistance tube is adopted as a heating source, so that the contact area between heat and the heat storage material is greatly increased, and the heating rate of the heat storage material is increased.

Description

Technical Field

[0001] The present application relates to the field of heat storage, and in particular to a high-voltage heater module for heat storage bricks. Background Art

[0002] Thermal storage materials refer to new chemical materials that undergo phase changes at a specific temperature and are accompanied by the absorption or release of heat. They can be used to control the ambient temperature or store thermal energy. They mainly include magnesium bricks, phase change materials and composite phase change materials, etc. They are usually heated directly or indirectly by electric heating elements such as heating wires.

[0003] Although the heating wire can play a role in heating, it has a more obvious defect, that is, the surface area of ​​the heating wire is small, so the heating efficiency is poor compared to the heat storage material, which is obviously insufficient. Utility Model Content

[0004] In order to improve the heating efficiency of heat storage materials, the present application provides a high-voltage heater module for heat storage bricks.

[0005] The present application provides a high voltage heater module for heat storage brick energy storage using the following technical solution:

[0006] A high-voltage heater module for heat storage bricks for energy storage comprises a support frame arranged in a brick body, an inlet junction box and an outlet junction box are arranged on the support frame, a plurality of resistor tubes are arranged in parallel with each other at intervals in the support frame, electrode connecting plates are sleeved on the ends of the resistor tubes, and the plurality of resistor tubes are connected in series through a plurality of electrode connecting plates and are conductive to the inlet junction box and the outlet junction box.

[0007] By adopting the above technical solution, the resistance of a single resistor tube is small, but the resistance formed by multiple resistor tubes connected in series is relatively large. Under the action of high voltage, the electrical energy will be converted into huge heat. Since the surface area of ​​the resistor tube is large, the contact area between the heat and the heat storage material can be greatly increased, thereby improving the heating efficiency of the heat storage material. At the same time, the cross-section of the resistor tube is circular, so that the heat radiation is emitted to the surroundings, which is conducive to improving the heat dissipation effect.

[0008] Optionally, a plurality of support assemblies are arranged in the support frame along the length direction of the resistor tube, and the support assemblies include a plurality of insulating support seats arranged in a row and close to each other, each insulating support seat is densely covered with arrangement holes for the resistor tube to slide through, and a plurality of insulating support seats in the same group are slidably penetrated by a pull rod, and the pull rods are respectively threadedly connected near the two ends with fastening nuts for tightening the two opposite outer walls of the support frame.

[0009] By adopting the above technical solution, workers arrange multiple insulating support seats of the same group in the support frame, then pass the pull rod through the support frame and multiple insulating support seats, and finally tighten the fastening nuts, thereby achieving stable support of the resistor tube by the insulating support seats.

[0010] Optionally, the pull rod is made of metal, and a plurality of protective grooves are provided on the outer side wall of the insulating support seat relative to the position between the pull rod and the resistor tube.

[0011] By adopting the above technical solution, the provision of the protection groove prolongs the creepage distance between the resistor tube and the nearest conductive part, thereby reducing the possibility of safety accidents caused by too short a creepage distance.

[0012] Optionally, two adjacent insulating support seats of the support assembly are provided with embedding holes at positions close to the pull rod, and an insulating sleeve is slidably sleeved at a position on the pull rod relative to the embedding hole.

[0013] By adopting the above technical solution, the current on the resistor tube climbs from the close sides of the two adjacent insulating support seats to the outer wall of the insulating sleeve, then to its end face, and finally to the pull rod. The setting of the insulating sleeve extends the climbing distance of the current on the resistor tube to the pull rod, reducing the possibility of safety accidents caused by too short climbing distance.

[0014] Optionally, an insulating sleeve is provided on the insulating support seat at a position corresponding to each arrangement hole, and a resistance sleeve for the resistance tube to pass through is arranged inside the insulating sleeve.

[0015] By adopting the above technical solution, each resistor sleeve is equivalent to connecting an additional resistor in parallel to the resistor tube, thereby slowing down the heating rate and cooling rate of the insulating support seat, thereby reducing the possibility of structural damage to the insulating support seat under frequent rapid heating and cooling conditions, thereby extending the service life of the insulating support seat.

[0016] Optionally, both ends of the resistor sleeve are trumpet-shaped, and the diameters of both ends of the resistor sleeve are larger than the inner diameter of the insulating sleeve and smaller than the outer diameter of the insulating sleeve.

[0017] By adopting the above technical solution, workers only need to install the insulating spacer in the arrangement hole to achieve the installation of the resistor sleeve relative to the arrangement hole.

[0018] Optionally, there is a clearance fit between the resistor sleeve and the insulating spacer sleeve.

[0019] By adopting the above technical solution, the resistor sleeve will experience obvious thermal expansion and contraction deformation during the heating and cooling process, and the gap can reserve sufficient space for the thermal expansion and contraction deformation of the resistor sleeve.

[0020] Optionally, the support frame is open and a protective grille is arranged on the open side.

[0021] By adopting the above technical solution, the protective grille can reduce the possibility of external foreign matter causing damage to the internal heating structure.

[0022] Optionally, each insulating support seat is provided with a plurality of placement grooves for placing the grille bars of the protective grille.

[0023] By adopting the above technical solution, multiple placement grooves cooperate to position the protective grille, while also providing strong support for the protective grille.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The surface area of ​​the resistor tube is large, so it can greatly increase the contact area between heat and heat storage materials, and improve the heating efficiency of heat storage materials. At the same time, the cross-section of the resistor tube is circular, so that heat radiation is emitted to all sides, which is conducive to improving the heat dissipation effect;

[0026] 2. The workers arrange multiple insulating support seats of the same group in the support frame, then pass the pull rod through the support frame and multiple insulating support seats, and finally tighten the fastening nuts, thereby achieving stable support of the resistor tube by the insulating support seats;

[0027] 3. The current on the resistor tube climbs from the close sides of the two adjacent insulating support seats to the outer wall of the insulating sleeve, then to its end face, and finally to the pull rod. The setting of the insulating sleeve extends the climbing distance of the current on the resistor tube to the pull rod, reducing the possibility of safety accidents caused by too short climbing distance;

[0028] 4. Each resistor sleeve is equivalent to an additional resistor connected in parallel to the resistor tube, which can slow down the heating and cooling rates of the insulating support seat, thereby reducing the possibility of structural damage to the insulating support seat under frequent rapid heating and cooling conditions, thereby extending the service life of the insulating support seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0030] Figure 2 It is an exploded view of the positional relationship between the pull rod, insulating sleeve, and fastening nut in the embodiment of the present application.

[0031] Figure 3 It is a cross-sectional view of the positional relationship between the insulating support seat, the insulating spacer sleeve and the resistor sleeve in the embodiment of the present application.

[0032] Explanation of the reference numerals: 1. Support frame; 2. Power input junction box; 3. Power output junction box; 4. Resistor tube; 5. Electrode connecting plate; 61. Insulating support seat; 611. Arrangement hole; 612. Protective groove; 613. Placement groove; 62. Pull rod; 63. Fastening nut; 7. Insulating sleeve; 8. Insulating spacer; 9. Resistor sleeve; 10. Protective grille. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The embodiment of the present application discloses a high-voltage heater module for heat storage brick energy storage.

[0035] Reference Figure 1 The high-voltage heater module for heat storage brick energy storage includes a support frame 1 formed in the brick body, and the support frame 1 is made of high-temperature resistant alloy in the prior art, such as S31008, N06617 and NS336.

[0036] Reference Figure 1 and Figure 2 A plurality of resistor tubes 4 are arranged in parallel with each other at intervals in the support frame 1. The head and tail ends of the plurality of resistor tubes 4 are flush, and the ends of the resistor tubes 4 are sleeved with electrode connecting plates 5 made of conductive metal.

[0037] An inlet junction box 2 is arranged at one end of the support frame 1 in the length direction, and an outlet junction box 3 is arranged at the other end. A plurality of resistor tubes 4 are connected in series through a plurality of electrode connecting plates 5 and are connected to the inlet junction box 2 and the outlet junction box 3 .

[0038] Reference Figure 1 and Figure 2 , the current flows in from the power inlet junction box 2, and under the action of multiple electrode connection plates 5, the current flows through each resistor tube 4 in turn, and finally flows out from the power outlet junction box 3. When the current flows through the resistor tube 4, the resistor tube 4 generates heat and dissipates it into the heat storage material.

[0039] Reference Figure 2 Since the surface area of ​​the resistor tube 4 is large, the generated heat can be more effectively transferred to the heat storage material, thereby improving the heating effect of the heat storage material.

[0040] In addition, since the cross-section of the resistor tube 4 is circular, the heat radiation can be dissipated in four directions, thereby improving the heat dissipation effect.

[0041] Reference Figure 1 and Figure 2A plurality of support assemblies are arranged in the support frame 1 along the length direction of the resistor tube 4. The support assemblies include a plurality of insulating support seats 61 arranged in a row along the width direction of the support frame 1. Two adjacent insulating support seats 61 in the same group are close to each other. Each insulating support seat 61 is densely covered with arrangement holes 611 for the resistor tube 4 to slide through. The insulating support seats 61 are made of ceramic material.

[0042] Reference Figure 1 and Figure 2 The plurality of insulating support seats 61 of the same group are slidably penetrated by two tie rods 62, which are parallel to the width direction of the support frame 1 and are distributed in the upper and lower directions, and the resistor tube 4 is located between the two tie rods 62. The tie rods 62 are respectively threadedly connected with fastening nuts 63 for tightening the two opposite outer side walls of the support frame 1 near the positions of the two ends thereof.

[0043] The worker arranges multiple insulating support seats 61 of the same group in the support frame 1, then passes the pull rod 62 through the support frame 1 and the multiple insulating support seats 61, and finally tightens the fastening nut 63, thereby achieving stable support of the resistor tube 4 by the insulating support seat 61.

[0044] Reference Figure 1 and Figure 2 Considering that the pull rod 62 is made of conductive metal, a plurality of protective grooves 612 are provided on the upper outer wall of the insulating support seat 61 relative to the position between the pull rod 62 and the resistor tube 4. The provision of the protective grooves 612 extends the creepage distance between the resistor tube 4 and the pull rod 62, and reduces the possibility of safety accidents caused by too short creepage distance.

[0045] Reference Figure 2 Two adjacent insulating support seats 61 of the support assembly are provided with embedding holes at the positions close to the pull rod 62, and an insulating sleeve 7 is slidably sleeved at the position of the pull rod 62 relative to the embedding hole. The insulating sleeve 7 is made of ceramic material.

[0046] The current on the resistor tube 4 climbs from the close sides of the two adjacent insulating support seats 61 to the outer wall of the insulating sleeve 7, then to the end face of the insulating sleeve 7, and finally flows to the pull rod 62. The provision of the insulating sleeve 7 further extends the creepage distance of the current on the resistor tube 4, reducing the possibility of safety accidents caused by too short creepage distance.

[0047] Reference Figure 2 and Figure 3 By adopting the heat storage material of the electric heating element in the present application, it can be used to quickly heat up the gas medium. After the heating is completed, the cooling speed of the electric heating element may also be faster. However, frequent rapid heating and cooling may damage the structure of the insulating support seat 61 and shorten the service life of the insulating support seat 61.

[0048] In order to solve this problem, an insulating sleeve 8 is interference-fitted on the insulating support seat 61 relative to each arrangement hole 611 , and the insulating sleeve 8 is made of ceramic material.

[0049] A resistance sleeve 9 for the resistance tube 4 to pass through is slidably inserted into the insulating sleeve 8 . The resistance sleeve 9 is made of conductive metal, and there is a clearance fit between the resistance sleeve 9 and the insulating sleeve 8 .

[0050] Reference Figure 2 and Figure 3 Each resistor sleeve 9 is equivalent to an additional resistor connected in parallel to the resistor tube 4. When current flows through the resistor tube 4, the resistor sleeve 9 will also heat up. In this way, the resistor sleeve 9 can slow down the heating rate and cooling rate of the insulating support seat 61, reducing the possibility of damage to the insulating support seat 61, thereby extending the service life of the insulating support seat 61.

[0051] Reference Figure 3 The two ends of the resistor sleeve 9 are trumpet-shaped, and the diameters of the two ends of the resistor sleeve 9 are larger than the inner diameter of the insulating sleeve 8 and smaller than the outer diameter of the insulating sleeve 8. After the insulating sleeve 8 is installed in the arrangement hole 611, the position of the resistor tube 4 is limited accordingly.

[0052] Reference Figure 3 , through the clearance fit between the resistor sleeve 9 and the insulating spacer sleeve 8, the deformation requirement of the resistor sleeve 9 caused by the thermal expansion and contraction effect is met.

[0053] Reference Figure 1 The support frame 1 is open and a protective grille 10 is welded on the open side. The protective grille 10 plays a protective role to prevent the possibility of foreign objects from damaging the electric heating element.

[0054] Reference Figure 1 and Figure 2 Each insulating support seat 61 is provided with a plurality of placement grooves 613 for placing the grille bars of the protective grille 10 . The placement grooves 613 play a role in positioning the placement position of the protective grille 10 and can also provide strong support for the protective grille 10 .

[0055] The heater module of the present application has the advantages of modular assembly, fast heating, high heating efficiency, and suitability for high voltage operation, and is therefore particularly suitable for equipment or application sites such as thermal storage bricks, energy storage stations, and RTO furnaces.

[0056] The implementation principle of a high voltage heater module for heat storage brick energy storage in the embodiment of the present application is:

[0057] The current flows in from the power inlet junction box 2, and under the action of multiple electrode connection plates 5, the current flows through each resistor tube 4 and resistor sleeve 9 in turn, and finally flows out from the power outlet junction box 3. When the current flows through the resistor tube 4 and the resistor sleeve 9, the resistor tube 4 and the resistor sleeve 9 generate heat, which is dissipated into the heat storage material. Since the surface area of ​​the resistor tube 4 is large, the heat storage material can quickly achieve temperature rise.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-voltage heater module for heat storage brick energy storage, comprising a support frame (1) arranged in a brick body, wherein an inlet junction box (2) and an outlet junction box (3) are arranged on the support frame (1), characterized in that: A plurality of mutually parallel resistor tubes (4) are arranged at intervals within the support frame (1); electrode connection plates (5) are sleeved on the ends of the resistor tubes (4); and the plurality of resistor tubes (4) are connected in series through the plurality of electrode connection plates (5) and are conductively connected to the power input junction box (2) and the power output junction box (3).

2. The high voltage heater module for heat storage brick energy storage according to claim 1 is characterized in that: A plurality of support components are arranged in the support frame (1) along the length direction of the resistor tube (4), and the support components include a plurality of insulating support seats (61) arranged in a row and close to each other, each insulating support seat (61) is densely covered with arrangement holes (611) for the resistor tube (4) to slide through, and a plurality of insulating support seats (61) in the same group are slidably penetrated by a pull rod (62), and the pull rod (62) is respectively threadedly connected with a fastening nut (63) near the two ends for tightening the two opposite outer walls of the support frame (1).

3. The high voltage heater module for heat storage brick energy storage according to claim 2 is characterized in that: The pull rod (62) is made of metal, and a plurality of protective grooves (612) are provided on the outer side wall of the insulating support seat (61) at a position between the pull rod (62) and the resistor tube (4).

4. The high voltage heater module for heat storage brick energy storage according to claim 2 is characterized in that: Embedding holes are respectively provided on the positions of the pull rod (62) at the positions of the two adjacent insulating support seats (61) of the support assembly close to each other, and an insulating sleeve (7) is slidably sleeved on the position of the pull rod (62) relative to the embedding hole.

5. The high voltage heater module for heat storage brick energy storage according to claim 2, characterized in that: An insulating sleeve (8) is provided on the insulating support seat (61) at a position corresponding to each arrangement hole (611), and a resistance sleeve (9) for the resistance tube (4) to pass through is arranged inside the insulating sleeve (8).

6. The high voltage heater module for heat storage brick energy storage according to claim 5, characterized in that: The two ends of the resistance sleeve (9) are trumpet-shaped, and the diameters of the two ends of the resistance sleeve (9) are larger than the inner diameter of the insulating sleeve (8) and smaller than the outer diameter of the insulating sleeve (8).

7. The high voltage heater module for heat storage brick energy storage according to claim 5, characterized in that: The resistance sleeve (9) and the insulating spacer sleeve (8) are clearance-fitted.

8. The high voltage heater module for heat storage brick energy storage according to claim 2, characterized in that: The support frame (1) is open and a protective grille (10) is arranged on the open side.

9. The high voltage heater module for heat storage brick energy storage according to claim 8, characterized in that: Each insulating support seat (61) is provided with a plurality of placement grooves (613) for placing the grille bars of the protective grille (10).

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