Heat storage equipment and mobile heat storage device

Abstract

The invention relates to heat storage equipment and a movable heat storage device, and the heat storage equipment comprises a heat storage device which comprises a heat exchange pipe and a heat storage unit, and the heat exchange pipe penetrates through the heat storage unit; the steam-water rebalance separator comprises a gas inlet, a gas outlet and a liquid inlet, the gas inlet is communicated with the outlet of the heat exchange pipe, the gas outlet is communicated with a first steam discharge pipe used for discharging steam treated by the steam-water rebalance separator, and the liquid inlet is communicated with a second liquid supply pipe used for providing liquid for the steam-water rebalance separator; the buffer tank comprises a first steam inlet, a second steam inlet and a steam outlet, the first steam inlet is communicated with the outlet of the heat exchange pipe, the second steam inlet is communicated with the first steam discharge pipe through a steam injection pipe, and the steam outlet is communicated with a second steam discharge pipe used for discharging steam treated by the buffer tank. In this way, saturated steam and superheated steam can be produced through the heat storage equipment, and then various types of use requirements are met.

Description

Technical Field

[0001] The present disclosure relates to the field of mobile heat storage technology, and in particular, to a heat storage device and a mobile heat storage apparatus. Background Art

[0002] At present, there are still a large number of areas in many cities in my country that cannot be covered by thermal pipelines, while industrial enterprises, hotels, bath centers, schools, hospitals and other users in the region have a large demand for thermal energy. On the contrary, in the vicinity of the city, a large number of factories have some waste heat that is directly discharged. The direct discharge of these waste heat will not only bring unnecessary energy waste, but also cause environmental pollution.

[0003] Based on this, the use of mobile heat storage heating technology can effectively improve the utilization rate of waste heat and avoid unnecessary energy waste. That is, mobile heat storage heating technology can be understood as recycling waste heat and other thermal energy resources in a certain place and storing them in a storage heat source device, transporting the heat energy to another place by vehicle, and then releasing the heat energy into the heating system, and finally providing the required heat energy to users through the heating system. Among them, a heat storage body for storing waste heat and other thermal energy resources is provided in the energy storage heat source device. The heat storage body can release its own stored heat into the heating system in the form of heat exchange, so as to be used for urban heating or factory production, for example. However, in the related art, the steam generated by waste heat is often of a single type, and the single type of steam has certain limitations in actual use and cannot be well applied to production use. Summary of the invention

[0004] The purpose of the present disclosure is to provide a heat storage device and a mobile heat storage device, which can produce saturated steam and superheated steam, and can produce the required type of steam according to actual production needs, so as to at least partially solve the problems in the above-mentioned related technologies.

[0005] In order to achieve the above object, the first aspect of the present disclosure provides a heat storage device, comprising:

[0006] A heat storage device, comprising a heat exchange tube and a heat storage unit, wherein the heat exchange tube runs through the heat storage unit so that the liquid flowing through the heat exchange tube can absorb the heat of the heat storage unit and then evaporate;

[0007] a steam-water rebalance separator, comprising a gas inlet, a gas outlet and a liquid inlet, wherein the gas inlet is connected to the outlet of the heat exchange tube through a first distribution pipe, the gas outlet is connected to a first steam discharge pipe for discharging steam treated by the steam-water rebalance separator, and the liquid inlet is connected to a second liquid supply pipe for supplying liquid to the steam-water rebalance separator; and

[0008] The buffer tank comprises a first steam inlet, a second steam inlet and a steam outlet, wherein the first steam inlet is connected to the outlet of the heat exchange tube through a second distribution pipe, the second steam inlet is connected to the first steam exhaust pipe through a steam injection pipe, and the steam outlet is connected to a second steam exhaust pipe for discharging steam treated by the buffer tank.

[0009] Optionally, the heat storage device further comprises a pressure regulating device arranged on the first steam discharge pipe and a first flow regulating device arranged on the first distribution pipe; and / or,

[0010] The heat storage device also includes a second flow regulating device arranged on the second distribution pipe.

[0011] Optionally, a one-way valve is provided on the steam injection pipe for allowing steam to flow from the first steam discharge pipe to the second steam inlet.

[0012] Optionally, the heat storage device comprises a first liquid supply pipe connected to the inlet of the heat exchange tube, the first liquid supply pipe is provided with a fourth flow regulating device, and the fourth flow regulating device comprises a first liquid supply pump and / or a first flow regulating valve; and / or

[0013] The second liquid supply pipe is provided with a third flow regulating device, and the third flow regulating device includes a second liquid supply pump and / or a second flow regulating valve.

[0014] Optionally, the heat storage device includes a liquid supply main pipe, and the liquid supply main pipe is connected to the inlet of the first liquid supply pipe and the inlet of the second liquid supply pipe respectively.

[0015] Optionally, the heat storage device includes a water tank and a connecting pipe connected to the water tank, the connecting pipe is respectively connected to the liquid supply main pipe, the inlet of the first liquid supply pipe and the inlet of the second liquid supply pipe, and the liquid supply main pipe, the first liquid supply pipe, the second liquid supply pipe and the connecting pipe are each provided with a first stop valve.

[0016] Optionally, the heat storage device further includes a first bypass pipe, the first bypass pipe is connected between the water tank and the first liquid supply pipe, and a first overflow valve is provided on the first bypass pipe.

[0017] Optionally, the heat storage device includes a shell, and the heat storage device, the buffer tank, the steam-water rebalance separator and the water tank are all arranged in the shell, and the shell is provided with a first discharge port connected to the outlet of the first steam discharge pipe, and the shell is provided with a second discharge port connected to the outlet of the second steam discharge pipe, the liquid supply main pipe runs through the shell, and the inlet of the liquid supply main pipe is located outside the shell.

[0018] Optionally, the heat storage unit includes a heat storage material, the heat storage material includes a carbonaceous component and a graphite component, or the heat storage material includes a carbonaceous component, a graphite component and inorganic oxide particles.

[0019] Optionally, the carbonaceous component includes amorphous carbon, the graphite component includes at least one of natural graphite and artificial graphite, and the inorganic oxide particles include at least one of silicon oxide, boron oxide, zirconium oxide, titanium oxide and silicon carbide.

[0020] Optionally, based on the total weight of the heat storage material, the amount of the carbonaceous component is 8-30% by weight, the amount of the graphite component is 70-92% by weight, and the amount of the inorganic oxide particles is 0-15% by weight.

[0021] Optionally, the heat storage device includes a protective shell, the heat storage unit is arranged in the protective shell, the inlet and outlet of the heat exchange tube are located outside the protective shell, and the protective shell is provided with a carbon monoxide sensor for detecting carbon monoxide in the protective shell.

[0022] Optionally, the protective shell is filled with protective gas, and a pressure sensor for detecting the pressure inside the protective shell is provided on the protective shell.

[0023] Optionally, the heat exchange tube includes an inlet main pipe, an outlet main pipe, a first heat exchange mother pipe, a second heat exchange mother pipe and a heat exchange sub-tube. The number of the first heat exchange mother pipes is multiple, and the multiple first heat exchange mother pipes are arranged side by side and are all connected to the inlet main pipe. The number of the second heat exchange mother pipes is multiple, and the multiple second heat exchange mother pipes are arranged side by side and are all connected to the outlet main pipe. The multiple first heat exchange mother pipes and the multiple second heat exchange mother pipes are respectively located on the opposite outer sides of the protective shell and are arranged symmetrically. The symmetrically arranged first heat exchange mother pipes and the second heat exchange mother pipes are both connected to the multiple heat exchange sub-tubes that pass through the protective shell and are arranged side by side. The outlet main pipe is respectively connected to the first distribution pipe and the second distribution pipe, and the inlet main pipe is connected to the first liquid supply pipe.

[0024] Optionally, the heat storage device further includes a heat storage inlet pipe and a heat storage outlet pipe, wherein the heat storage inlet pipe is connected to the inlet of the heat exchange tube and is used to provide heat storage gas to the heat exchange tube so that the heat storage unit can absorb the heat of the heat storage gas, and the heat storage outlet pipe is connected to the outlet of the heat exchange tube.

[0025] Optionally, the heat storage device further comprises an electric heater, a heating tube of the electric heater is at least partially inserted into the heat storage unit.

[0026] A second aspect of the present disclosure further provides a mobile heat storage device, comprising a vehicle and the heat storage apparatus as described above, which is arranged on the vehicle.

[0027] Through the above technical solution, the liquid flowing through the heat exchange tube absorbs the heat of the heat storage unit and then evaporates to produce superheated steam. However, as the liquid continuously exchanges heat with the heat storage unit, the temperature of the heat storage unit itself continues to decrease, resulting in large temperature fluctuations of the superheated steam discharged from the heat exchange tube within a period of time, and the quality of the superheated steam is low. Based on this, the superheated steam with large temperature fluctuations discharged from the heat exchange tube can be injected into the steam-water rebalance separator through the first distribution pipe, and then saturated steam is produced through the steam-water rebalance separator and discharged through the first steam discharge pipe. Alternatively, the superheated steam with large temperature fluctuations discharged from the heat exchange tube can be injected into the buffer tank through the second distribution pipe. After being processed by the buffer tank, superheated steam is produced, that is, superheated steam with large temperature fluctuations can flow into the buffer tank through the second distribution pipe. At the same time, the first steam discharge pipe can be connected to the buffer tank through the steam injection pipe, so that the medium and low temperature saturated steam produced by the steam-water rebalance separator can be injected into the buffer tank. The medium and low temperature saturated steam and the superheated steam with large temperature fluctuations discharged from the heat exchange pipe are mixed in proportion in the buffer tank, so that the buffer tank can produce superheated steam with relatively stable temperature within a period of time, and finally discharged through the second steam discharge pipe connected to the buffer tank. In this way, personnel can choose different types of steam according to actual use needs to meet different practical production needs.

[0028] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0030] Figure 1 is a schematic structural diagram of a heat storage device and a mobile heat storage device provided in an exemplary embodiment of the present disclosure;

[0031] Figure 2 Schematic diagram of the structure of a heat exchange tube provided in an exemplary embodiment of the present disclosure.

[0032] Description of Reference Numerals

[0033] 1-heat storage device; 101-first liquid supply pipe; 102-heat exchange pipe; 1021-first heat exchange main pipe; 1022-second heat exchange main pipe; 1023-heat exchange sub-pipe; 1024-inlet main pipe; 1025-outlet main pipe; 104-heat storage unit; 105-protective shell; 1051-pressure sensor; 1052-carbon monoxide sensor; 1053-temperature sensor; 106-heat storage inlet pipe; 107-heat storage outlet pipe; 108-electric heater; 201-first distribution pipe; 202-second distribution pipe; 2021-second flow regulating device; 3-steam-water rebalance distribution separator; 301-first flow regulating device; 4-first steam discharge pipe; 401-pressure regulating device; 5-first stop valve; 6-second liquid supply pipe; 7-buffer tank; 701-second steam discharge pipe; 8-steam injection pipe; 801-check valve; 9-fourth flow regulating device; 901-first liquid supply pump; 10-third flow regulating device; 1001-second liquid supply pump; 11-liquid supply main pipe; 12-water tank; 13-connecting pipe; 14-first bypass pipe; 1401-first overflow valve; 15-housing; 16-vehicle; 17-second stop valve; 18-gas injection valve. DETAILED DESCRIPTION

[0034] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0035] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", refer to the inside and outside relative to the outline of the component or structure itself. In addition, it should be noted that the terms used, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0036] In order to achieve the above-mentioned object, the first aspect of the present disclosure provides a heat storage device, referring to Figure 1As shown, the heat storage device includes a heat storage device 1, a steam-water rebalance separator 3 and a buffer tank 7, wherein the heat storage device 1 includes a heat exchange tube 102 and a heat storage unit 104, the heat exchange tube 102 runs through the heat storage unit 104, so that the liquid flowing through the heat exchange tube 102 can absorb the heat of the heat storage unit 104 and then evaporate; the steam-water rebalance separator 3 includes a gas inlet, a gas outlet and a liquid inlet, the gas inlet is connected to the outlet of the heat exchange tube 102 through a first distribution pipe 201, the gas outlet is connected to a first steam discharge pipe 4 for discharging steam treated by the steam-water rebalance separator 3, and the liquid inlet is connected to a second liquid supply pipe 6 for providing liquid to the steam-water rebalance separator 3; the buffer tank 7 includes a first steam inlet, a second steam inlet and a steam outlet, the first steam inlet is connected to the outlet of the heat exchange tube 102 through a second distribution pipe 202, the second steam inlet is connected to the first steam discharge pipe 4 through a steam injection pipe 8, and the steam outlet is connected to a second steam discharge pipe 701 for discharging steam treated by the buffer tank 7.

[0037] Through the above technical solution, the liquid flowing through the heat exchange tube 102 absorbs the heat of the heat storage unit 104 and then evaporates to produce superheated steam. However, as the liquid continues to exchange heat with the heat storage unit 104, the temperature of the heat storage unit 104 itself continues to decrease, resulting in a large temperature fluctuation of the superheated steam discharged from the heat exchange tube 102 over a period of time, and the quality of the superheated steam is low. Based on this, the superheated steam with large temperature fluctuations discharged from the heat exchange tube 102 can be injected into the steam-water rebalance separator 3 through the first distribution pipe 201, and then saturated steam is produced through the steam-water rebalance separator 3 and discharged through the first steam discharge pipe 4. Alternatively, the superheated steam with large temperature fluctuations discharged from the heat exchange tube 102 can be injected into the steam-water rebalance separator 3 through the first distribution pipe 201, and then saturated steam is produced through the steam-water rebalance separator 3 and discharged through the first steam discharge pipe 4. The second distribution pipe 202 is injected into the buffer tank 7, and superheated steam is produced after being processed by the buffer tank 7, that is, the superheated steam with large temperature fluctuations can flow into the buffer tank 7 through the second distribution pipe 202. At the same time, the first steam discharge pipe 4 can be connected with the buffer tank 7 through the steam injection pipe 8, so that the saturated steam produced by the steam-water rebalance separator 3 can be injected into the buffer tank 7, and the saturated steam is mixed with the superheated steam with large temperature fluctuations discharged from the heat exchange pipe 102, so that the buffer tank 7 can produce superheated steam with relatively stable temperature within a period of time, and finally discharged through the second steam discharge pipe 701 connected to the buffer tank 7. In this way, personnel can choose different types of steam according to actual use needs to meet different production and practical needs.

[0038] In practical applications, the superheated steam discharged from the heat exchange tube 102 is processed by the steam-water rebalance separator 3 to produce saturated steam, which can be used in industrial production to heat reactors, heating boilers and other heating devices, and water heaters in residents' lives.

[0039] The superheated steam discharged from the heat exchange tube 102 is processed by the buffer tank 7 to produce high-quality superheated steam (the temperature fluctuation of the superheated steam produced within a period of time is small), which can be used in cooking, food drying, vegetable dehydration, and steam oven baking in the food industry.

[0040] In some embodiments, reference Figure 1 As shown, the heat storage device further includes a pressure regulating device 401 disposed on the first steam discharge pipe 4 and a first flow regulating device 301 disposed on the first distribution pipe 201, that is, in order to make the steam discharged from the first steam discharge pipe 4 (the steam treated by the steam-water rebalance separator 3 is saturated steam) have a relatively stable quality (the temperature, pressure and flow of the steam can be discharged from the first steam discharge pipe 4 relatively stably and can be maintained for a period of time), the first flow regulating device 301 can be coordinated with the pressure regulating device 401 to regulate the heat storage unit 104. The heat exchange starts with the liquid flowing through the heat exchange tube 102 and generates superheated steam. After the superheated steam flows out of the heat exchange tube 102, it flows through the first distribution pipe 201 to the steam-water rebalance separator 3 for treatment. The treated superheated steam is converted into saturated steam. After the saturated steam flows out of the steam-water rebalance separator 3 through the gas outlet of the steam-water rebalance separator 3, it is discharged through the first steam discharge pipe 4. In order to make the temperature of the discharged saturated steam meet the use requirements, a pressure regulating device 401 can be installed on the first steam discharge pipe 4. The device 3 continuously processes the superheated steam to convert it into saturated steam, and the saturated steam is continuously injected into the first steam discharge pipe 4. The pressure in the first steam discharge pipe 4 gradually increases, thereby increasing the temperature of the saturated steam injected into the first steam discharge pipe 4. When the pressure of the steam in the first steam discharge pipe 4 reaches the value set by the pressure regulating device 401, the pressure regulating device 401 is opened, and the saturated steam is discharged from the first steam discharge pipe 4. However, in the actual production test process of the heat storage equipment, if only the pressure regulating device 401 is used to make the temperature and flow rate of the saturated steam discharged from the first steam discharge pipe 4 relatively stable, the effect is not ideal. Therefore, a first flow regulating device 301 can be provided on the first distribution pipe 201. The first flow regulating device 301 can be a flow regulating valve, which can control the flow rate of the superheated steam flowing from the first distribution pipe 201 toward the steam-water rebalance separator 3. When the pressure of the saturated steam in the first steam discharge pipe 4 is not enough to reach the set pressure, a part of the flow regulating valve can be continued to be opened on the basis of the existing opening amplitude to increase the flow rate, and vice versa, the opening amplitude can be reduced to reduce the flow rate.

[0041] In addition, the heat storage device also includes a second flow regulating device 2021 arranged on the second distribution pipe 202, that is, in order to make the steam discharged from the second steam discharge pipe 701 (the steam treated by the buffer tank 7 is superheated steam) have a relatively stable quality (the temperature, pressure and flow of the steam can be discharged from the second steam discharge pipe 701 relatively stably and can be maintained for a period of time), the first flow regulating device 301, the pressure regulating device 401 and the second flow regulating device 2021 can be coordinated and regulated, and when the heat storage device actually produces steam, considering that the required steam may be saturated steam or superheated steam, a second stop valve 17 can be provided on the steam injection pipe 8, the first steam discharge pipe 4 and the second steam discharge pipe 701. Specifically, when the heat storage device is required to produce superheated steam, refer to Figure 1 As shown, the second stop valve 17 located on the first steam discharge pipe 4 can be closed, and the second stop valve 17 on the steam injection pipe 8 and the second steam discharge pipe 701 can be opened. When the steam-water rebalance separator 3 continuously produces saturated steam and flows into the first steam discharge pipe 4, the saturated steam can flow from the second steam inlet to the buffer tank 7 through the steam injection pipe 8. At the same time, the superheated steam flowing out of the heat exchange pipe 102 (the temperature of the superheated steam fluctuates greatly within a period of time) can flow from the first steam inlet to the buffer tank 7 through the second distribution pipe 202. At this time, the medium and low temperature saturated steam and the high temperature superheated steam (the temperature of the superheated steam fluctuates greatly within a period of time) are mixed in proportion. After mixing, the superheated steam of the required temperature can be obtained and finally discharged through the second steam discharge pipe 701.

[0042] Instructions for temperature regulation of the superheated steam discharged from the buffer tank 7: Personnel can adjust the opening of the first flow regulating device 301, the pressure regulating device 401 and the second flow regulating device 2021 according to the required superheated steam temperature. If the required output superheated steam temperature is higher, the injection amount of saturated steam can be reduced, that is, the existing opening of the first flow regulating device 301 can be appropriately reduced, so that the output of saturated steam produced by the steam-water rebalance separator 3 is reduced, thereby reducing the saturated steam injected into the buffer tank 7; since the relationship between the temperature and pressure of saturated steam presents a one-to-one proportional curve, when the saturated steam reaches the set pressure and is discharged, the saturated steam is also at the set temperature, so the set pressure value for opening the pressure regulating device 401 can also be lowered accordingly. When the set pressure value of the pressure regulating device 401 is lowered accordingly, the temperature of the saturated steam discharged from the first steam discharge pipe 4 will also be reduced accordingly, that is, the temperature of the saturated steam injected into the buffer tank 7 is reduced.

[0043] If the required output superheated steam temperature is low, the second flow regulating device 2021 can be adjusted to appropriately reduce the existing opening of the second flow regulating device 2021, that is, the injection amount of steam injected from the heat exchange tube 102 into the buffer tank 7 can be reduced accordingly.

[0044] In the present disclosure, the first flow regulating device 301, the second flow regulating device 2021 and the pressure regulating device 401 can all be connected to the controller, and relevant monitoring components such as temperature sensors, flow sensors, pressure sensors 1051, etc. can be installed on the first steam discharge pipe 4, the second steam discharge pipe 701, the first distribution pipe 201 and the second distribution pipe 202. The above-mentioned relevant monitoring components are all connected to the controller so that personnel can monitor the operating status of the heat storage equipment in real time, and can make targeted adjustments to the first flow regulating device 301, the second flow regulating device 2021 and the pressure regulating device 401 according to the numerical values ​​provided by the relevant monitoring components (the opening amplitude of the first flow regulating device 301, the second flow regulating device 2021 and the pressure regulating device 401 is controlled by the controller, so that the first steam discharge pipe 4 can discharge saturated steam more stably or the second steam discharge pipe 701 can discharge superheated steam more stably).

[0045] In the present disclosure, the first flow regulating device 301 and the second flow regulating device 2021 may be flow regulating valves, and the pressure regulating device 401 may be a pressure regulating valve.

[0046] In some embodiments, reference Figure 1 As shown, the steam injection pipe 8 may be provided with a one-way valve 801 for allowing steam to flow from the first steam discharge pipe 4 to the second steam inlet, thereby limiting the flow direction of the saturated steam in the steam injection pipe 8 when the heat storage device produces superheated steam. At the same time, the one-way valve 801 installed on the steam injection pipe 8 also improves the operating safety of the heat storage device, that is, the steam flowing from the heat exchange pipe 102 to the buffer tank 7 will not flow through the steam injection pipe 8 to the first steam discharge pipe 4.

[0047] In some embodiments, reference Figure 1As shown, the heat storage device includes a first liquid supply pipe 101 connected to the inlet of the heat exchange tube 102, and the first liquid supply pipe 101 is provided with a fourth flow regulating device 9 for regulating the liquid flow, wherein the fourth flow regulating device 9 may include a first liquid supply pump 901, through which the liquid is pumped into the first liquid supply pipe 101 and discharged into the heat exchange tube 102 through the first liquid supply pipe 101, or the fourth flow regulating device 9 may also include a first flow regulating valve arranged on the first liquid supply pipe 101, and the flow of the liquid is controlled by the first flow regulating valve, so as to increase or decrease the amount of liquid entering the heat exchange tube 102, thereby indirectly controlling the amount of steam generated after the liquid exchanges heat with the heat storage unit 104.

[0048] In some embodiments, reference Figure 1 As shown, a third flow regulating device 10 may be provided on the second liquid supply pipe 6, and the third flow regulating device 10 is used to control the amount of liquid entering the gas-water rebalance separator 3 through the liquid inlet, wherein the third flow regulating device 10 may include a second liquid supply pump 1001, through which the liquid enters the gas-water rebalance separator 3 through the second liquid supply pipe 6 and the liquid inlet in sequence, and the third flow regulating device 10 may also include a second flow regulating valve provided on the second liquid supply pipe 6, and the amount of liquid entering the gas-water rebalance separator 3 is further accurately adjusted through the second flow regulating valve.

[0049] In some embodiments, reference Figure 1 As shown, the heat storage device includes a liquid supply main pipe 11, which is connected to the inlet of the first liquid supply pipe 101 and the inlet of the second liquid supply pipe 6 respectively, for providing liquid to the heat exchange tube 102 and the steam-water rebalance separator 3, and the liquid can be water.

[0050] In some embodiments, reference Figure 1As shown, the heat storage device includes a water tank 12 for storing liquid and a connecting pipe 13 connected to the water tank 12, wherein the connecting pipe 13 is respectively connected to the liquid supply main pipe 11, the inlet of the first liquid supply pipe 101 and the inlet of the second liquid supply pipe 6, and the liquid can be provided to the heat exchange pipe 102 and the steam-water rebalance separator 3 through the water tank 12, and the liquid can also be provided to the heat exchange pipe 102 and the steam-water rebalance separator 3 through the liquid supply main pipe 11. Therefore, it is necessary to connect the liquid supply main pipe 11 and the first liquid supply pipe 101 to the heat exchange pipe 102 and the steam-water rebalance separator 3. 01. The second liquid supply pipe 6 and the connecting pipe 13 are each provided with a first stop valve 5. When liquid is provided to the heat exchange tube 102 and the steam-water rebalance separator 3 through the water tank 12, the first stop valve 5 located on the liquid supply main pipe 11 needs to be closed. When liquid is provided to the heat exchange tube 102 and the steam-water rebalance separator 3 through the liquid supply main pipe 11, the first stop valve 5 located on the connecting pipe 13 needs to be closed. Similarly, the liquid supply main pipe 11 can also inject liquid into the water tank 12 through the connecting pipe 13.

[0051] In some embodiments, reference Figure 1 As shown, the heat storage device also includes a first bypass pipe 14, which is connected between the water tank 12 and the first liquid supply pipe 101 and is provided with a first overflow valve 1401. The purpose of providing the first overflow valve 1401 in the present disclosure is to stabilize the pressure in the first liquid supply pipe 101 and protect the first liquid supply pipe 101 to avoid damage to the first liquid supply pipe 101 due to excessive internal pressure. When the pressure in the first liquid supply pipe 101 is too high, the first overflow valve 1401 opens, and part of the liquid in the first liquid supply pipe 101 flows back to the water tank 12 from the first bypass pipe 14 to avoid liquid waste.

[0052] In some embodiments, reference Figure 1 As shown, the heat storage device includes a shell 15, and the heat storage device 1, the buffer tank 7, the steam-water rebalance separator 3 and the water tank 12 are all arranged in the shell 15. The shell 15 plays a protective role, and the shell 15 is provided with a first discharge port connected to the outlet of the first steam discharge pipe 4, and the shell 15 is provided with a second discharge port connected to the outlet of the second steam discharge pipe 701. The first discharge port and the second discharge port can be used to connect to a transport pipeline, and the transport pipeline can transmit steam to a heating device or other equipment that needs steam.

[0053] In some embodiments, reference Figure 1 As shown, the liquid supply main pipe 11 passes through the shell 15 and the inlet of the liquid supply main pipe 11 is located on the outside of the shell 15. The inlet of the liquid supply main pipe 11 can be connected to an external water source to supply liquid to the water tank 12, the heat exchange tube 102 and the steam-water rebalance separator 3.

[0054] The heat storage unit 104 includes a heat storage material. To increase the heat storage density and thermal conductivity of the heat storage material, the heat storage material includes a carbonaceous component, a graphite component, or the heat storage material includes a carbonaceous component, a graphite component and inorganic oxide particles.

[0055] The carbonaceous component includes amorphous carbon, which is formed by high-temperature carbonization of a binder (asphalt or resin), the graphite component includes at least one of natural graphite and artificial graphite, and the inorganic oxide particles include at least one of silicon oxide, boron oxide, zirconium oxide, titanium oxide and silicon carbide.

[0056] Among them, based on the total weight of the heat storage material, the amount of carbonaceous components is 8-30% by weight, the amount of graphite components is 70-92% by weight, and the amount of inorganic oxide particles is 0-15% by weight. Specifically, the inorganic oxide particles have a particle size of 50-200 μm and contain at least one of silicon oxide, boron oxide, zirconium oxide, titanium oxide, and silicon carbide. The heat storage temperature of the heat storage material can reach up to 900°C, the thermal conductivity can reach up to 100W / mk, and the heat storage density is 900kJ / kg.

[0057] In the present disclosure, regarding the preparation of heat storage materials, the above-mentioned carbonaceous components, graphite components and inorganic oxide particles can be uniformly mixed in a certain proportion to obtain a mixture, the mixture is molded, and the molded blocks produced after molding are subjected to high-temperature heat treatment to finally obtain the heat storage material.

[0058] In some embodiments, in order to facilitate monitoring whether the heat exchange tube 102 leaks, refer to Figure 1As shown in , the heat storage device 1 also includes a protective shell 105, the heat storage unit 104 is arranged in the protective shell 105, and the inlet and outlet of the heat exchange tube 102 are located outside the protective shell 105. Since the heat exchange tube 102 at least partially penetrates the heat storage unit 104, when the heat exchange tube 102 leaks, the heat exchange medium flowing inside the heat exchange tube 102 will also directly contact the heat storage material. When the heat exchange medium is water vapor, since a carbonaceous component is used as a component of the heat storage material, water vapor and the heat storage material will react with water gas to produce carbon monoxide and hydrogen. The protective shell 105 can also prevent carbon monoxide and hydrogen from contacting oxygen and exploding in a high temperature environment. In order to detect whether part of the heat exchange tube 102 in the protective shell 105 is leaking, a carbon monoxide sensor 1052 for detecting the carbon monoxide content in the protective shell 105 is provided on the protective shell 105. There may be multiple carbon monoxide sensors 1052, which are respectively arranged at different positions in the protective shell 105, so as to timely and accurately detect the carbon monoxide content in the protective shell 105. When the carbon monoxide sensor 1052 detects that the carbon monoxide content is not 0, the carbon monoxide sensor 1052 sends out an alarm to notify the on-site staff to handle it.

[0059] At the same time, a temperature sensor 1053 may be installed on the heat storage unit 104 in the present disclosure, wherein the temperature sensor 1053 can detect the temperature of the heat storage unit 104 so that personnel can monitor the temperature change of the heat storage unit 104 during the heat storage process in real time. When the temperature sensor 1053 detects that the heat storage unit 104 reaches the expected temperature, the heat storage operation can be stopped.

[0060] In order to further increase the safety level of the heat storage device 1, the protective shell 105 is filled with a protective gas, which may be a nitrogen-like gas with stable chemical properties or a helium-like inert gas. That is, a gas injection valve 18 for injecting the protective gas may be installed on the outer wall of the protective shell 105. Since the protective gas does not react with the heat storage material or with hydrogen or carbon monoxide that may be produced, the safety level of the heat storage device 1 can be improved. At the same time, a pressure sensor 1051 for detecting the pressure inside the protective shell 105 is provided on the protective shell 105. When the protective shell 105 leaks, the pressure inside the protective shell 105 will drop abnormally. When the heat exchange tube 102 inside the protective shell 105 leaks, the pressure inside the protective shell 105 will increase abnormally. When the pressure sensor 1051 detects that the pressure inside the protective shell 105 is abnormal, an alarm will be issued to notify the on-site staff to handle it.

[0061] In some embodiments, when the heat storage device 1 performs heat release operation (the liquid inside the heat exchange tube 102 exchanges heat with the heat storage unit 104 to generate steam), Figure 1 and Figure 2 As shown, the heat exchange tube 102 includes an inlet main pipe 1024, an outlet main pipe 1025, a first heat exchange mother pipe 1021, a second heat exchange mother pipe 1022 and a heat exchange sub-tube 1023. The number of the first heat exchange mother pipe 1021 is multiple, and the multiple first heat exchange mother pipes 1021 are arranged side by side and are all connected to the inlet main pipe 1024. The number of the second heat exchange mother pipe 1022 is multiple, and the multiple second heat exchange mother pipes 1022 are arranged side by side and are all connected to the outlet main pipe 1025. A plurality of first heat exchange mother tubes 1021 and a plurality of second heat exchange mother tubes 1022 are respectively located on two opposite outer sides of the protective shell 105 and are symmetrically arranged. The symmetrically arranged first heat exchange mother tubes 1021 and second heat exchange mother tubes 1022 are both connected by a plurality of heat exchange sub-tubes 1023 that penetrate the protective shell 105 and are arranged side by side. The outlet main pipe 1025 is respectively connected to the first distribution pipe 201 and the second distribution pipe 202, and the inlet main pipe 1024 is connected to the first liquid supply pipe 101.

[0062] The heat storage material can be processed into any suitable shape to be placed in the protective shell 105. For example, the heat storage material can be processed into a block shape. A plurality of block-shaped heat storage materials are arranged in a matrix to form an integral heat storage unit 104. The present disclosure does not limit this. When the first liquid supply pump 901 is started, the liquid stored in the water tank 12 flows to the inlet main pipe 1024 through the first liquid supply pipe 101. The liquid entering the inlet main pipe 1024 flows to the heat exchange sub-tube 1023 through the first heat exchange mother pipe 1021. When the liquid flows into the heat exchange sub-tube 1023, the liquid Heat is exchanged with the heat storage unit 104 located outside the heat exchange sub-tube 1023 to generate steam. After the steam passes through the heat exchange sub-tube 1023, the second heat exchange main pipe 1022, and the outlet main pipe 1025 in sequence, the first flow regulating device 301 or the second flow regulating device 2021 is adjusted accordingly according to the type of steam actually required to be produced. That is, when saturated steam needs to be produced, the second flow regulating device 2021 is closed, and when superheated steam needs to be produced, both the first flow regulating device 301 and the second flow regulating device 2021 need to be in the open state.

[0063] Description of the output of saturated steam or superheated steam produced by the heat storage device: When the heat storage device needs to produce saturated steam, it is necessary to first close the second flow regulating device 2021, the second stop valve 17 on the steam injection pipe 8, and the second stop valve 17 on the second steam discharge pipe 701, and at the same time open the first flow regulating device 301 and the second stop valve 17 on the first steam discharge pipe 4. Then, as the steam flowing out of the heat exchange pipe 102 continuously flows into the steam-water rebalance separator 3 through the first distribution pipe 201, the steam-water rebalance separator 3 continuously produces saturated steam and accumulates in the first steam discharge pipe 4. As time goes by, the pressure in the first steam discharge pipe 4 will become larger and larger (the greater the pressure in the first steam discharge pipe 4, the higher the temperature of the saturated steam). High), until the value set by the pressure regulating device 401 is reached, the pressure regulating device 401 is opened, and the saturated steam in the first steam discharge pipe 4 is discharged, thereby meeting the steam temperature demand in industrial production. At the same time, in the present disclosure, the steam flowing in the first distribution pipe 201 (the steam is the superheated steam flowing out of the heat exchange tube 102) can also be regulated by the first flow regulating device 301, that is, the total amount of superheated steam flowing into the steam-water rebalance separator 3 within a period of time is controlled, and then the amount of saturated steam produced by the steam-water rebalance separator 3 is controlled. In this way, it can be achieved to a certain extent that high-quality saturated steam is discharged through the first steam discharge pipe 4 within a period of time (the temperature and flow rate of the saturated steam discharged within a period of time do not fluctuate greatly).

[0064] When it is necessary to make the heat storage equipment produce superheated steam, it is necessary to first open the first flow regulating device 301, open the second flow regulating device 2021, open the second stop valve 17 on the steam injection pipe 8, and open the second stop valve 17 on the second steam discharge pipe 701, and at the same time close the second stop valve 17 on the first steam discharge pipe 4. While the steam flowing out of the heat exchange pipe 102 continuously flows into the buffer tank 7 through the second distribution pipe 202, the saturated steam continuously produced by the steam-water rebalance separator 3 flows through the first steam discharge pipe 4 and the steam injection pipe 8 in turn, and is also injected into the buffer tank 7. At this time, the saturated steam and the steam flowing out of the heat exchange pipe 102 (the temperature of the superheated steam fluctuates greatly within a period of time) are mixed in proportion. After mixing, superheated steam of the required temperature can be obtained and finally discharged through the second steam discharge pipe 701.

[0065] In some embodiments, when the heat storage device 1 performs heat storage operation (i.e., using the heat storage unit 104 to store heat, for example, using high-temperature gas or high-temperature steam to heat the heat storage unit 104), reference Figure 1 and Figure 2As shown, the heat storage device also includes a heat storage inlet pipe 106 and a heat storage outlet pipe 107, wherein the heat storage inlet pipe 106 is connected to the inlet of the heat exchange tube 102 for providing heat storage gas to the heat exchange tube 102 so that the heat storage unit 104 can absorb the heat of the heat storage gas, and the heat storage outlet pipe 107 is connected to the outlet of the heat exchange tube 102.

[0066] Specifically, the heat storage inlet pipe 106 can be connected to the inlet main pipe 1024 and the internal communication, and the heat storage outlet pipe 107 can be connected to the outlet main pipe 1025 and the internal communication. Before storing heat in the heat storage unit 104, it is necessary to first close the valve located between the outlet main pipe 1025 and the first distribution pipe 201 and the second distribution pipe 202 and the valve on the first liquid supply pipe 101 (the valve can be a stop valve), and then connect the pipeline used to transport the high-temperature gas or high-temperature steam generated by the factory to the heat storage inlet. The heat storage unit 104 is connected to the heat exchanger 106. For the convenience of description, the following description is made using hot gas (high-temperature gas or high-temperature steam). After the hot gas enters the inlet main pipe 1024, the hot gas flows through the first heat exchange main pipe 1021, the heat exchange sub-pipe 1023, the second heat exchange main pipe 1022 and the outlet main pipe 1025 in sequence, and finally is discharged from the heat storage outlet pipe 107. When the hot gas flows through the heat exchange sub-pipe 1023, the hot gas exchanges heat with the heat storage unit 104, so that the heat storage unit 104 starts to store heat and realizes heat recovery. In this embodiment, the heat release operation and the heat storage operation of the heat storage 1 can share a set of heat exchange tubes. In this way, the space occupied by a set of heat exchange tubes 102 can be reduced in the limited heat storage body space, thereby reducing the overall volume of the heat storage 1, or the extra space obtained by reducing the heat exchange tubes 102 can be used to increase the volume or quantity of the heat storage material to increase the heat storage capacity, or increase the number of heat exchange sub-pipes 1023 to increase the heat exchange area.

[0067] Another embodiment of the heat storage device 1 for heat storage operation is shown in FIG. Figure 1 As shown, the heat storage device also includes an electric heater 108, a heating tube of the electric heater 108 is at least partially inserted into the heat storage unit 104, and valley electricity can be used to power the electric heater 108, thereby heating and storing energy in the heat storage unit 104 through the heating tube.

[0068] In the present disclosure, when the heat storage device 1 performs heat storage operation, high temperature gas can be used alone for heat exchange to complete the heat storage operation, or the electric heater 108 can be used alone to complete the heat storage operation, or high temperature gas and the electric heater 108 can be used together.

[0069] On the basis of the above technical solution, the second aspect of the present disclosure further provides a mobile heat storage device, including a vehicle 16 and a heat storage device according to the above first aspect or any embodiment of the above first aspect disposed on the vehicle 16. By transporting the heat storage device in a vehicle-mounted form, the needs of different customers can be fully met, thereby improving the flexibility of use of the heat storage device.

[0070] The present disclosure exemplarily describes the process of long-distance heat transport using mobile heat storage and heating technology. The heat storage device can be installed on a vehicle 16. When the heat storage device needs to be used for heat storage, the vehicle 16 carrying the heat storage device can be driven to the location of the waste heat source, such as a factory, and then the heat storage unit 104 in the heat storage device is heated, that is, heat is stored by the heat storage unit 104. After storage, the heat storage device is moved to a location where the heat stored by the heat storage unit 104 is needed by the vehicle 16, thereby completing the use of the heat (water is heat-exchanged with the heat storage unit 104 to obtain steam).

[0071] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0072] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0073] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A heat storage device, characterized in that: include: A heat storage device, comprising a heat exchange tube and a heat storage unit, wherein the heat exchange tube runs through the heat storage unit so that the liquid flowing through the heat exchange tube can absorb the heat of the heat storage unit and then evaporate; The steam-water rebalance separator comprises a gas inlet, a gas outlet and a liquid inlet, wherein the gas inlet is connected to the outlet of the heat exchange tube through a first distribution pipe, the gas outlet is connected to a first steam discharge pipe for discharging steam treated by the steam-water rebalance separator, and the liquid inlet is connected to a second liquid supply pipe for supplying liquid to the steam-water rebalance separator; and The buffer tank comprises a first steam inlet, a second steam inlet and a steam outlet, wherein the first steam inlet is connected to the outlet of the heat exchange tube through a second distribution pipe, the second steam inlet is connected to the first steam exhaust pipe through a steam injection pipe, and the steam outlet is connected to a second steam exhaust pipe for discharging steam treated by the buffer tank.

2. The heat storage device according to claim 1, characterized in that: The heat storage device further comprises a pressure regulating device arranged on the first steam discharge pipe and a first flow regulating device arranged on the first distribution pipe; and / or, The heat storage device also includes a second flow regulating device arranged on the second distribution pipe.

3. The heat storage device according to claim 1, characterized in that: The steam injection pipe is provided with a one-way valve for allowing steam to flow from the first steam discharge pipe to the second steam inlet.

4. The heat storage device according to claim 1, characterized in that: The heat storage device comprises a first liquid supply pipe connected to the inlet of the heat exchange pipe, the first liquid supply pipe is provided with a fourth flow regulating device, and the fourth flow regulating device comprises a first liquid supply pump and / or a first flow regulating valve; and / or The second liquid supply pipe is provided with a third flow regulating device, and the third flow regulating device includes a second liquid supply pump and / or a second flow regulating valve.

5. The heat storage device according to claim 4, characterized in that: The heat storage device comprises a liquid supply main pipe, and the liquid supply main pipe is communicated with an inlet of the first liquid supply pipe and an inlet of the second liquid supply pipe respectively.

6. The heat storage device according to claim 5, characterized in that: The heat storage device includes a water tank and a connecting pipe connected to the water tank, the connecting pipe is respectively connected to the liquid supply main pipe, the inlet of the first liquid supply pipe and the inlet of the second liquid supply pipe, and the liquid supply main pipe, the first liquid supply pipe, the second liquid supply pipe and the connecting pipe are each provided with a first stop valve.

7. The heat storage device according to claim 6, characterized in that: The heat storage device further includes a first bypass pipe, which is connected between the water tank and the first liquid supply pipe, and a first overflow valve is provided on the first bypass pipe.

8. The heat storage device according to claim 6, characterized in that: The heat storage device includes a shell, the heat storage device, the buffer tank, the steam-water rebalance separator and the water tank are all arranged in the shell, the shell is provided with a first discharge port connected to the outlet of the first steam discharge pipe, the shell is provided with a second discharge port connected to the outlet of the second steam discharge pipe, the liquid supply main pipe runs through the shell, and the inlet of the liquid supply main pipe is located outside the shell.

9. The heat storage device according to claim 1, characterized in that: The heat storage unit includes a heat storage material, wherein the heat storage material includes a carbonaceous component and a graphite component, or the heat storage material includes a carbonaceous component, a graphite component and inorganic oxide particles.

10. The heat storage device according to claim 9, characterized in that: The carbonaceous component includes amorphous carbon, the graphite component includes at least one of natural graphite and artificial graphite, and the inorganic oxide particles include at least one of silicon oxide, boron oxide, zirconium oxide, titanium oxide and silicon carbide.

11. The heat storage device according to claim 9 or 10, characterized in that: Based on the total weight of the heat storage material, the amount of the carbonaceous component is 8-30% by weight, the amount of the graphite component is 70-92% by weight, and the amount of the inorganic oxide particles is 0-15% by weight.

12. The heat storage device according to claim 1, characterized in that: The heat storage device comprises a protective shell, the heat storage unit is arranged in the protective shell, the inlet and outlet of the heat exchange tube are located outside the protective shell, and the protective shell is provided with a carbon monoxide sensor for detecting carbon monoxide in the protective shell.

13. The heat storage device according to claim 12, characterized in that: The protective shell is filled with protective gas, and a pressure sensor for detecting the pressure inside the protective shell is arranged on the protective shell.

14. The heat storage device according to claim 12, characterized in that: The heat exchange tubes include an inlet main pipe, an outlet main pipe, a first heat exchange mother pipe, a second heat exchange mother pipe and heat exchange sub-tubes. There are multiple first heat exchange mother pipes, which are arranged side by side and are all connected to the inlet main pipe. There are multiple second heat exchange mother pipes, which are arranged side by side and are all connected to the outlet main pipe. The multiple first heat exchange mother pipes and the multiple second heat exchange mother pipes are respectively located on the opposite outer sides of the protective shell and are arranged symmetrically. The symmetrically arranged first heat exchange mother pipes and the second heat exchange mother pipes are both connected with multiple heat exchange sub-tubes that penetrate the protective shell and are arranged side by side. The outlet main pipe is respectively connected to the first distribution pipe and the second distribution pipe, and the inlet main pipe is connected to the first liquid supply pipe.

15. The heat storage device according to claim 1, characterized in that: The heat storage device also includes a heat storage inlet pipe and a heat storage outlet pipe, wherein the heat storage inlet pipe is connected to the inlet of the heat exchange tube and is used to provide heat storage gas to the heat exchange tube so that the heat storage unit can absorb the heat of the heat storage gas, and the heat storage outlet pipe is connected to the outlet of the heat exchange tube.

16. The heat storage device according to claim 1, characterized in that: The heat storage device further comprises an electric heater, a heating tube of which is at least partially inserted into the heat storage unit.

17. A mobile heat storage device, characterized in that: The invention comprises a vehicle and a heat storage device according to any one of claims 1 to 16 arranged on the vehicle.

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