High-efficiency electric boiler heat storage device for energy supply station

Abstract

The utility model relates to a kind of high-efficiency electric boiler heat storage devices for energy supply station, including heating furnace and heat storage box, heating furnace is divided into heating bin on top and transition bin below, spiral heating pipe with axis along vertical direction is equipped in heating bin, spiral water pipe is wound with electric heating coil outside, heat storage assembly is equipped in heat storage box, water pipe A is connected between the lower end import of spiral heating pipe and transition bin bottom, water pipe B is connected between the upper end export of spiral heating pipe and the inside top of heat storage box, water pipe C is connected between the bottom of heat storage box inside and transition bin top, water pump is respectively equipped on water pipe A and water pipe C, heating furnace front is equipped with water supplement port A leading to transition bin, heat storage box top is equipped with water supplement port B, heat storage box side bottom is equipped with drain, water supplement port A, water supplement port B and drain are equipped with valve respectively.The utility model can use low-price electricity time zone energy storage to reduce operating cost.

Description

Technical Field

[0001] This utility model relates to the field of boiler equipment technology, specifically to a high-efficiency electric boiler heat storage device for power supply stations. Background Technology

[0002] Boilers are commonly used heating devices, widely used in petrochemical, shipbuilding and other fields. Electric boilers are one type of boiler equipment.

[0003] To balance the load of the power system, electricity prices are mostly based on peak-valley pricing. Off-peak electricity has a price advantage over peak electricity. In order to reduce the operating costs of electric boilers, it is necessary to add energy storage functions to them, increase the opportunity to use electricity during off-peak periods, and reduce the burden on users. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency electric boiler heat storage device for power supply stations, which can reduce operating costs by utilizing low-cost electricity for time zone energy storage.

[0005] The technical solution of this utility model is as follows:

[0006] A high-efficiency electric boiler heat storage device for power supply stations includes a heating furnace and a heat storage tank. The heating furnace is divided into an upper heating chamber and a lower transition chamber. The heating chamber is equipped with a spiral heating tube with its axis running vertically. An electric heating coil is wound around the spiral water supply tube. The heat storage tank is equipped with a heat storage component. A water supply pipe A connects the lower inlet of the spiral heating tube to the bottom of the transition chamber. A water supply pipe B connects the upper outlet of the spiral heating tube to the top of the inside of the heat storage tank. A water supply pipe C connects the bottom of the inside of the heat storage tank to the top of the transition chamber. A water pump is installed on each of the water supply pipes A and C. A water inlet A is provided on the front of the heating furnace leading to the transition chamber. A water inlet B is provided on the top of the heat storage tank. A drain outlet is provided on the bottom side of the heat storage tank. Each of the water inlet A, water inlet B, and drain outlet is equipped with a valve.

[0007] Preferably, the heat storage component includes a mounting frame and a storage box. The heat storage box is provided with a mounting frame, and a plurality of parallel storage boxes are mounted on the mounting frame. The storage boxes contain phase change materials for energy storage. A gap is left between adjacent storage boxes for water to flow through. The mounting frame is provided with through holes leading to the gaps between adjacent storage boxes.

[0008] Preferably, the heating furnace is provided with a control console on the front, and the bottom of the transition chamber and the bottom of the heat storage tank are each provided with a liquid level sensor and a temperature sensor, and the liquid level sensor and the temperature sensor are electrically connected to the control console.

[0009] Preferably, the outer walls of the water pipes A, B, and C are covered with an insulation layer.

[0010] Preferably, a one-way valve is provided at the connection between the water supply pipe B and the heat storage tank, and at the connection between the water supply pipe C and the transition chamber.

[0011] The beneficial technical effects of this utility model are as follows:

[0012] By using a combination of spiral heating tubes and electric heating coils, water is heated during off-peak electricity prices. The energy is stored through the phase change of the phase change material in the heat storage component. During peak electricity prices, the heat storage component releases the energy to heat the water, reducing operating costs. The spiral heating tubes extend the flow path of water in the heating chamber, increasing the heating time and improving heating efficiency.

[0013] During off-peak electricity pricing, low-temperature water enters the transition chamber from the water inlet A. Driven by a water pump, the water flows along the water pipe A into the spiral heating tube within the heating chamber. As the water spirals upwards along the heating tube, the electric heating coil heats the low-temperature water into high-temperature water. The high-temperature water then enters the heat storage tank from the water pipe B, where the heat storage components, heated by the high-temperature water, accumulate energy. The high-temperature water exits the heat storage tank from the drain and is sent to the point of use. If the water temperature is insufficient, it is pumped back into the transition chamber along the water pipe C and reheated by the spiral heating tube. Once the water temperature is within acceptable limits, it exits from the drain. During peak electricity pricing, low-temperature water enters the heat storage tank from the water inlet B. The heat storage components release heat to heat the low-temperature water, which then exits from the drain and is sent to the point of use. If the water temperature is insufficient, it is pumped back into the transition chamber along the water pipe C and reheated by the spiral heating tube. Once the water temperature is within acceptable limits, it exits from the drain. Attached Figure Description

[0014] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0015] Appendix Figure 1 This is the front view of the present invention.

[0016] Appendix Figure 2 This is a front-view cross-sectional view of the present invention.

[0017] In the diagram: 1-Heating furnace, 2-Heat storage box, 3-Heating chamber, 4-Transition chamber, 5-Spiral heating tube, 6-Electric heating coil, 7-Heat storage component, 8-Water supply pipe A, 9-Water supply pipe B, 10-Water supply pipe C, 11-Water pump, 12-Water inlet A, 13-Water inlet B, 14-Drain outlet, 15-Valve, 16-Mounting bracket, 17-Storage box, 18-Through hole, 19-Control console, 20-Level sensor, 21-Temperature sensor, 22-Insulation layer, 23-One-way valve. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Example:

[0020] like Figure 1 and Figure 2 As shown, this embodiment provides a high-efficiency electric boiler heat storage device for power supply stations, including a heating furnace 1 and a heat storage box 2. The heating furnace 1 is divided into an upper heating chamber 3 and a lower transition chamber 4. The heating chamber 3 is provided with a spiral heating pipe 5 with its axis along the vertical direction. An electric heating coil 6 is wound around the spiral water supply pipe. The heat storage box 2 is provided with a heat storage component 7. A water supply pipe A8 is connected between the lower inlet of the spiral heating pipe 5 and the bottom of the transition chamber 4. A water supply pipe B9 is connected between the upper outlet of the spiral heating pipe 5 and the top of the interior of the heat storage box 2. A water supply pipe C10 is connected between the bottom of the interior of the heat storage box 2 and the top of the transition chamber 4. A water pump 11 is provided on each of the water supply pipes A8 and C10. A water inlet A12 leading to the transition chamber 4 is provided on the front of the heating furnace 1. A water inlet B13 is provided on the top of the heat storage box 2. A drain outlet 14 is provided on the bottom side of the heat storage box 2. A valve 15 is provided on each of the water inlet A12, water inlet B13 and drain outlet 14.

[0021] By using the spiral heating tube 5 and the electric heating coil 6 together, water is heated during off-peak electricity prices. The energy is stored through the phase change of the phase change material in the heat storage component 7. During peak electricity prices, the heat storage component 7 releases the energy to heat the water, reducing operating costs. The spiral heating tube 5 extends the length of the water flow path in the heating chamber, increases the heating time of the water, and improves heating efficiency.

[0022] During off-peak electricity pricing, low-temperature water enters the transition chamber 4 through the water inlet A12. Driven by the water pump 11, the low-temperature water flows along the water pipe A8 into the spiral heating pipe 5 within the heating chamber 3. As the water spirals upwards along the heating pipe 5, the electric heating coil 6 heats the low-temperature water into high-temperature water. The high-temperature water then flows through the water pipe B9 into the heat storage tank 2, where it is heated by the heat storage component 7, which stores energy. The high-temperature water then exits the heat storage tank 2 through the drain outlet 14 and is sent to the point of use. If the water temperature is insufficient, it flows along the water pipe... C10 is drawn back into the transition chamber 4 and re-drawn into the spiral heating tube 5 for heating. Once the water temperature is qualified, it leaves from the drain outlet 14. During peak electricity pricing, low-temperature water enters the heat storage tank 2 from the water inlet B13. The heat storage component 7 releases heat to heat the low-temperature water. After the low-temperature water is heated to high-temperature water, it leaves from the drain outlet 14 and is sent to the water-using area. If the water temperature is insufficient, it is drawn back into the transition chamber 4 along the water supply pipe C10 and re-drawn into the spiral heating tube 5 for heating. Once the water temperature is qualified, it leaves from the drain outlet 14.

[0023] Furthermore, the heat storage component 7 includes a mounting frame 16 and a storage box 17. The heat storage box 2 is provided with a mounting frame 16, and a number of parallel storage boxes 17 are mounted on the mounting frame 16. The storage boxes 17 contain phase change materials for energy storage. A gap is left between adjacent storage boxes 17 for water to flow through. The mounting frame 16 is provided with a through hole 18 leading to the gap between adjacent storage boxes 17.

[0024] The mounting bracket 16 provides a stable mounting platform for the storage box 17. The gap between adjacent storage boxes 17 allows high-temperature water to fully immerse the storage box 17, facilitating the absorption of heat from the high-temperature water by the phase change material inside the storage box 17.

[0025] Furthermore, the heating furnace 1 is equipped with a control console 19 on the front, and the bottom of the transition chamber 4 and the bottom of the heat storage box 2 are respectively equipped with a liquid level sensor 20 and a temperature sensor 21. The liquid level sensor 20 and the temperature sensor 21 are electrically connected to the control console 19.

[0026] The liquid level sensor 20 and temperature sensor 21 transmit the liquid level and temperature data to the control console 19, so that the staff can understand the water level and water temperature in the transition tank 4 and the heat storage tank 2, so as to operate the water pump 11 and valve 15 in a timely manner and avoid problems such as low water level and unreasonable water temperature.

[0027] When the water level in transition chamber 4 is too low, the water level is raised by opening valve 15 at water inlet A12 or by turning on pump 11 in water supply pipe C10. When the water temperature in transition chamber 4 is too high, the water temperature is lowered by opening valve 15 at water inlet A12 or by turning off pump 11 in water supply pipe C10. When the water level in heat storage tank 2 is too low, the water level is raised by opening valve 15 at water inlet B13 or by turning on pump 11 in water supply pipe A8. When the water temperature in transition chamber 4 is too low, the water temperature is raised by turning on pumps 11 in water supply pipes A8 and C10 to allow water to return to the spiral heating pipe 5 for heating.

[0028] Furthermore, the outer walls of water pipes A8, B9, and C10 are wrapped with an insulation layer 22.

[0029] The insulation layer 22 reduces heat loss when water passes through water pipes A8, B9, and C10, thereby improving energy utilization.

[0030] Furthermore, a one-way valve 23 is provided at the connection between water pipe B9 and heat storage box 2, and at the connection between water pipe C10 and transition chamber 4.

[0031] Water backflow is prevented by one-way valve 23.

[0032] Working principle and usage process of this utility model:

[0033] During off-peak electricity pricing, low-temperature water enters the transition chamber 4 through the water inlet A12. Under the action of the water pump 11, the low-temperature water enters the spiral heating tube 5 in the heating chamber 3 through the water supply pipe A8. As the water spirals upward along the spiral heating tube 5, the electric heating coil 6 heats the low-temperature water into high-temperature water. The high-temperature water enters the heat storage tank 2 through the water supply pipe B9, and the heat storage component 7, heated by the high-temperature water, accumulates energy. The high-temperature water leaves the heat storage tank 2 through the drain outlet 14 and is sent to the water consumption point. If the water temperature is insufficient, it is pumped back into the transition chamber 4 through the water supply pipe C10 and re-pumped into the spiral heating tube 5 for heating. Once the water temperature is qualified, it leaves through the drain outlet 14.

[0034] During peak electricity pricing, low-temperature water enters the heat storage tank 2 through the water inlet B13. The heat storage component 7 releases heat to heat the low-temperature water. After being heated to high-temperature water, the water leaves through the drain outlet 14 and is sent to the water-using area. If the water temperature is insufficient, it is pumped back into the transition chamber 4 along the water supply pipe C10 and then pumped back to the spiral heating pipe 5 for heating. Once the water temperature is qualified, it leaves through the drain outlet 14.

[0035] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A high-efficiency electric boiler thermal storage device for power supply stations, characterized in that: The device includes a heating furnace and a heat storage tank. The heating furnace is divided into an upper heating chamber and a lower transition chamber. The heating chamber is equipped with a spiral heating tube with its axis running vertically. An electric heating coil is wound around the spiral heating tube. The heat storage tank is equipped with a heat storage component. A water supply pipe A connects the lower inlet of the spiral heating tube to the bottom of the transition chamber. A water supply pipe B connects the upper outlet of the spiral heating tube to the top of the heat storage tank. A water supply pipe C connects the bottom of the heat storage tank to the top of the transition chamber. Water pumps are installed on both water supply pipes A and C. A water inlet A is located on the front of the heating furnace leading to the transition chamber. A water inlet B is located on the top of the heat storage tank. A drain outlet is located on the bottom side of the heat storage tank. Each of the water inlet A, water inlet B, and drain outlet is equipped with a valve.

2. The high-efficiency electric boiler thermal storage device for power supply stations according to claim 1, characterized in that: The heat storage assembly includes a mounting frame and storage boxes. The heat storage box is equipped with a mounting frame, and several parallel storage boxes are mounted on the mounting frame. The storage boxes contain phase change materials for energy storage. A gap is left between adjacent storage boxes for water to flow through. The mounting frame is provided with through holes leading to the gaps between adjacent storage boxes.

3. The high-efficiency electric boiler thermal storage device for power supply stations according to claim 1, characterized in that: The heating furnace is equipped with a control console on the front, and the bottom of the transition chamber and the bottom of the heat storage tank are each equipped with a liquid level sensor and a temperature sensor, which are electrically connected to the control console.

4. The high-efficiency electric boiler thermal storage device for power supply stations according to claim 1, characterized in that: The outer walls of water pipes A, B, and C are covered with an insulation layer.

5. The high-efficiency electric boiler thermal storage device for power supply stations according to claim 1, characterized in that: One-way valves are provided at the connection points between water pipe B and the heat storage tank, and at the connection points between water pipe C and the transition chamber.

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