Combined structure of skid-mounted solid electric heat storage boiler

Abstract

The present invention relates to the technical field of solid electric heat storage, and provides a combined structure of a skid-mounted solid electric heat storage boiler. A multi-medium heat exchange assembly is located in a thermal control chamber; a solid heat storage body is connected to the multi-medium heat exchange assembly by means of an air duct assembly; the solid heat storage body is fixed to a housing by means of anti-displacement bolt rods; the housing is arranged on an equipment foundation assembly; an electrical control cabinet controls both the multi-medium heat exchange assembly and an electric heating assembly; by means of an air intake assembly, external air enters the thermal control chamber and a power wiring chamber which are located inside the housing; gas in the thermal control chamber and the power wiring chamber is discharged by means of an exhaust assembly; a user processes any medium among water, steam and a heat transfer oil by means of the multi-medium heat exchange assembly, the air duct assembly and the solid heat storage body and then outputs the medium. In this way, the multi-medium heat exchange assembly, the solid heat storage body and a thermal insulation layer are fixed in the housing, so that the housing, the multi-medium heat exchange assembly, the solid heat storage body and the thermal insulation layer are integrated.

Description

A combined structure of a skid-mounted solid electric thermal storage boiler Technical Field

[0001] The present disclosure relates to the technical field of solid electric thermal storage, and in particular to a combined structure of a skid-mounted solid electric thermal storage boiler. Background Art

[0002] With an increasing number of projects optimizing the utilization of clean electricity, solid electric thermal storage equipment has gained widespread recognition in the thermal energy storage industry due to its high cost-effectiveness, high stability, and reliability. Traditional solid electric thermal storage furnaces are often built to order, with components shipped to the site according to specific user requirements for on-site assembly and delivery.

[0003] The skid-mounted solid electric thermal storage boiler in the prior art needs to be pushed into a container for transportation by means of an external rail. This simply completes the purpose of loading the solid electric thermal storage boiler into the container, but does not achieve the integration of the container and the solid electric thermal storage boiler.

[0004] Summary of the Invention

[0005] The present disclosure provides a combined structure of a skid-mounted solid electric thermal storage boiler, which integrates the shell with the multi-media heat exchange component, the solid thermal storage body and the insulation layer, avoiding the need to push it into a container for transportation by means of an external track.

[0006] To solve the above technical problems, the present disclosure provides the following technical solutions:

[0007] The present disclosure provides a combined structure of a skid-mounted solid electric thermal storage boiler, comprising:

[0008] case;

[0009] a thermal control room, arranged on one side of the shell;

[0010] A multi-media heat exchange component is located in the thermal control room;

[0011] A solid heat storage body is arranged inside the shell and connected to the multi-media heat exchange assembly through an air duct assembly;

[0012] An electric heating component is connected to the solid heat storage body;

[0013] A heat-insulating layer is provided between the solid heat storage body and the shell, and is connected to the air duct assembly and the solid heat storage body;

[0014] an anti-displacement bolt rod, disposed on the shell and connected to the solid heat storage body;

[0015] A power connection room is provided on the other side of the housing;

[0016] An air inlet assembly is arranged at the bottom of the housing;

[0017] an exhaust assembly, arranged on the top of the shell;

[0018] an electric control cabinet electrically connected to both the multi-media heat exchange component and the electric heating component;

[0019] The equipment base component is connected to the lower part of the shell.

[0020] Furthermore, the multi-media heat exchange assembly includes:

[0021] a heat exchanger, disposed on a side wall of the heat control room and connected to the solid heat storage body through the air duct assembly;

[0022] An evaporation tank is connected to the heat exchanger through an upper header and a lower header;

[0023] a medium type conversion valve, disposed on the lower header and connected to the lower header;

[0024] A medium output port is provided on the top of the evaporation tank and is connected to the evaporation tank;

[0025] A medium input port is provided at the bottom of the lower header;

[0026] a safety valve, disposed on the evaporation tank and connected to the evaporation tank;

[0027] a liquid level gauge connected to the evaporation tank;

[0028] a pressure sensor connected to the evaporation tank;

[0029] A temperature sensor is connected to the evaporation tank.

[0030] Furthermore, the upper header is arranged on the top of the heat exchanger and is connected to the heat exchanger;

[0031] The lower header is arranged at the bottom of the heat exchanger and is connected to the heat exchanger.

[0032] Furthermore, the air duct assembly includes:

[0033] An air induced passage is provided at the shell side inlet of the heat exchanger and passes through the insulation layer and is connected to the high temperature area of ​​the solid heat storage body;

[0034] a circulation fan connected to the shell-side outlet of the heat exchanger;

[0035] The return air channel is connected to the circulation fan and passes through the thermal insulation layer to be connected to the low-temperature area of ​​the solid heat storage body.

[0036] Furthermore, the electric heating component includes:

[0037] Resistance wires are evenly arranged in the array of hot air holes of the solid heat storage body;

[0038] a first electrode passing through the insulation layer on the power wiring room side, one end of the first electrode being located in the power wiring room, and the other end being connected to the resistance wire;

[0039] an insulating partition, one end of which is connected to the insulation layer near the multi-media heat exchange component, and the other end of which is connected to the solid heat storage body;

[0040] The electrode cover is buckled onto the thermal insulation layer at the end of the first electrode located on the side of the power wiring room.

[0041] Furthermore, the air inlet assembly includes:

[0042] a first air inlet, disposed at the bottom of the housing located in the thermal control room and connected to the bottom of the housing;

[0043] The second air inlet is arranged at the bottom of the shell located in the power connection room and is connected to the bottom of the shell.

[0044] Furthermore, the exhaust assembly includes:

[0045] a first air outlet, provided on the top of the shell in the thermal control room and connected to the top of the shell;

[0046] a second air outlet, provided on the top of the housing located in the power wiring room and connected to the top of the housing;

[0047] a first waterproof cover, fastened to the first air outlet away from the thermal control room;

[0048] The second waterproof cover is buckled on the second air outlet away from the power connection room.

[0049] Furthermore, the housing further comprises:

[0050] A fixed grounding point is provided on the housing located in the power wiring room;

[0051] An electrical connection channel opening is provided at the bottom of the housing located in the power connection room and is connected to the housing;

[0052] A reserved opening for the medium input pipe is provided at the bottom of the shell near the medium input opening and is connected to the shell;

[0053] A reserved opening for the medium output pipe is provided on the top of the shell near the medium output opening and is connected to the shell;

[0054] An instrument pre-installation port is arranged on the top of the shell near the evaporation tank and is connected to the shell.

[0055] Furthermore, the basic components of the device include:

[0056] A concrete foundation is provided at the lower portion of the shell and is connected to the shell;

[0057] a grounding grid, arranged at the lower part of the concrete foundation and connected to the earth;

[0058] A grounding reserved point is provided on the upper portion of the concrete foundation and is connected to the grounding grid;

[0059] A cable trench is provided in the concrete foundation located in the power connection room;

[0060] A drainage ditch is provided in the concrete foundation located in the thermal control room.

[0061] Furthermore, it also includes a duplex installation structure, the duplex installation structure including:

[0062] Longitudinal auxiliary load-bearing members are respectively vertically arranged on the concrete foundation;

[0063] A transverse platform member is vertically connected to the longitudinal auxiliary load-bearing member;

[0064] A ladder is longitudinally arranged between the transverse platform members and connected to the transverse platform members.

[0065] Compared to the prior art, the skid-mounted solid electric thermal storage boiler provided in the first aspect of the present disclosure has a combined structure in which a multi-media heat exchange assembly, a solid thermal storage body, and a thermal insulation layer are all fixedly disposed within a housing. The multi-media heat exchange assembly is located within a heat control room, the solid thermal storage body is connected to the multi-media heat exchange assembly via an air duct assembly, and the solid thermal storage body is fixed to the housing via an anti-displacement bolt. The housing is disposed on an equipment base assembly. An electrical control cabinet simultaneously controls the multi-media heat exchange assembly and the electric heating assembly. External air enters the heat control room and power connection room within the housing through an air inlet assembly. Gas within the heat control room and power connection room is discharged by an exhaust assembly. The user processes any medium, such as water, steam, or thermal oil, through the multi-media heat exchange assembly, the air duct assembly, and the solid thermal storage body before outputting it. Thus, the multi-media heat exchange assembly, the solid thermal storage body, and the thermal insulation layer are fixed within the housing, achieving an integrated fusion of the housing, the multi-media heat exchange assembly, the solid thermal storage body, and the thermal insulation layer, thereby avoiding the need to push the multi-media heat exchange assembly, the solid thermal storage body, and the thermal insulation layer into a container for transportation via external rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] FIG1 is a cross-sectional view of the combined structure of the skid-mounted solid electric thermal storage boiler disclosed herein;

[0067] FIG2 is a cross-sectional view of a multimedia heat exchange assembly according to the present disclosure;

[0068] FIG3 is a partial schematic diagram of a solid thermal storage body disclosed in the present invention;

[0069] FIG4 is a schematic diagram of a mortise and tenon structure heat storage brick disclosed herein;

[0070] FIG5 is a cross-sectional view of a base assembly of the apparatus of the present disclosure;

[0071] FIG6 is a schematic diagram of the electrical connection of the combined structure of a single skid-mounted solid electric thermal storage boiler disclosed herein;

[0072] FIG7 is a schematic diagram of the star connection method of the present disclosure;

[0073] FIG8 is a schematic diagram of a triangle connection method disclosed herein;

[0074] FIG9 is a schematic diagram of the water supply process pipeline of the combined structure of three combined skid-mounted solid electric thermal storage boilers disclosed in the present invention;

[0075] FIG10 is a schematic diagram of the hot water process piping of the combined structure of three combined skid-mounted solid electric thermal storage boilers disclosed herein;

[0076] FIG11 is a schematic diagram of a thermal oil process pipeline of a combined structure of three combined skid-mounted solid electric thermal storage boilers disclosed herein;

[0077] FIG12 is a schematic diagram of a wet steam process pipeline of a combined structure of three combined skid-mounted solid electric thermal storage boilers disclosed herein;

[0078] FIG13 is a cross-sectional view of the assembled structure of the skid-mounted solid electric thermal storage boiler with a long shell according to the present disclosure;

[0079] FIG14 is a cross-sectional view of the assembled structure of the skid-mounted solid electric thermal storage boiler with a short shell according to the present invention;

[0080] FIG15 is a schematic diagram of a duplex installation structure of the present disclosure;

[0081] Explanation of the accompanying symbols: 1. Combination structure of skid-mounted solid electric thermal storage boiler; 1-1. Solid thermal storage body; 1-1-1. Mortise and tenon structure thermal storage brick; 1-1-2. Anti-displacement bolt rod; 1-2. Insulation layer; 1-3. Multi-media heat exchange assembly; 1-3-1. Heat exchanger; 1-3-2. Evaporation tank; 1-3-3. Liquid level gauge; 1-3-4. Medium type conversion valve; 1-3-5. Safety valve; 1-3-6. Pressure sensor; 1-3-7. Temperature sensor; 1-3-8. Upper header; 1-3-9. Lower header; 1-4. Circulating fan; 1-5. Resistance wire; 1-6. Array hot air through hole; 1-7. High temperature zone; 1-8. Low temperature zone; 1-9. Air induced duct; 1-10. Heat exchanger shell-side inlet; 1-11. Heat exchanger shell-side outlet; 1-12. Return air duct; 1-13. Medium outlet 1-14, medium input port; 1-15, reserved port for medium input pipe; 1-16, reserved port for medium output pipe; 1-17, pre-installation port for instruments and meters; 1-18, fixed grounding point; 1-19, housing; 1-19-1, long housing; 1-19-2, short housing; 1-20, first electrode; 1-21, electrical connection channel port; 1-22, second air inlet; 1-23, second air outlet; 1-24, second waterproof cover; 1-25, first air outlet; 1-26, first waterproof cover; 1-27, first air inlet; 1-28, thermal control room; 1-29, power connection room; 1-30, electrode cover; 1-31, insulating partition; 2. Electric control cabinet; 3. Electric heating structure; 4. Equipment foundation components; 4-1. Concrete foundation; 4-2. Grounding reserve point; 4-3. Grounding grid; 4-4. Cable trench; 4-5. Drainage ditch; 4-6. Longitudinal auxiliary load-bearing components; 4-7. Horizontal platform components; 4-8. Ladder; 5. Power supply; 5-1. Phase A power lead; 5-2. Phase B power lead; 5-3. Phase C power lead; 6. Steam heat users; 6-1. Feedwater pump; 6-2. Feedwater pipeline; 6-3. Steam output pipeline; 6-4. Water treatment system; 7. Hot water heat users; 7-1. Circulating water pump; 7-2. Makeup water pump; 7-3. Makeup water treatment system; 7-4. Return water pipeline; 7-5. Water supply pipeline; 8. Thermal oil heat users; 8-1. Thermal oil integrated system; 8-2. Thermal oil return pipe; 8-3. Thermal oil supply pipe; 9. Wet steam heat users; 9-1. Source water treatment system; 9-2. Plunger pump; 9-3. Water supply pipe; 9-4. Wet steam output pipe. DETAILED DESCRIPTION

[0082] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.

[0083] It should be noted that, unless otherwise specified, the technical or scientific terms used in this disclosure should have the ordinary meaning understood by those skilled in the art to which this disclosure pertains. In this document, relational terms such as "first" and "second" are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Terms such as "connected" and "connected" should be interpreted broadly, and can refer to, for example, fixed connections, removable connections, or integration; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. The terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprises..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the elements.

[0084] This embodiment provides a skid-mounted solid electric thermal storage boiler assembly structure. As shown in FIG1 , the skid-mounted solid electric thermal storage boiler assembly structure includes a housing 1-19, a thermal control room 1-28, a multi-media heat exchange assembly 1-3, a solid thermal storage body 1-1, an electric heating assembly, an insulation layer 1-2, an anti-displacement bolt rod 1-1-2, a power connection room 1-29, an air inlet assembly, an air exhaust assembly, an electric control cabinet 2, and an equipment base assembly 4. The thermal control room 1-28 is arranged on one side of the housing 1-19. The multi-media heat exchange assembly 1-3 is located within the thermal control room 1-28. The solid thermal storage body 1-1 is arranged inside the housing 1-19 and is connected to the multi-media heat exchange assembly 1-3 via an air duct assembly. The electric heating assembly is connected to the solid thermal storage body 1-1. The insulation layer 1-2 is sleeved between the solid thermal storage body 1-1 and the housing 1-19, and is connected to the air duct assembly and the solid thermal storage body 1-1. Anti-displacement bolts 1-1-2 are evenly arranged on the shell 1-19 and are simultaneously connected to the solid heat storage body 1-1 and the insulation layer 1-2. The power connection room 1-29 is located on the other side of the shell 1-19. The air intake assembly is located at the bottom of the shell 1-19. The exhaust assembly is located at the top of the shell 1-19. The electrical control cabinet 2 is electrically connected to both the multi-media heat exchange assembly 1-3 and the electric heating assembly. The equipment base assembly 4 is connected to the lower portion of the shell 1-19.

[0085] In this embodiment, the multi-media heat exchange component 1-3, the solid heat storage body 1-1 and the insulation layer 1-2 are all fixedly arranged in the shell 1-19, wherein the multi-media heat exchange component 1-3 is located in the thermal control room 1-28, the solid heat storage body 1-1 is connected to the multi-media heat exchange component 1-3 through the air duct component, the solid heat storage body 1-1 is fixed to the shell 1-19 through the anti-displacement bolt rod 1-1-2, the shell 1-19 is set on the equipment base component 4, the electric control cabinet 2 controls the multi-media heat exchange component 1-3 and the electric heating component at the same time, the external wind enters the thermal control room 1-28 and the power connection room 1-29 located in the shell 1-19 through the air inlet component, the gas in the thermal control room 1-28 and the power connection room 1-29 is discharged by the exhaust component, the user processes any medium among water, steam and thermal oil through the multi-media heat exchange component 1-3, the air duct component and the solid heat storage body 1-1, and then outputs it. Thus, the multi-media heat exchange component 1-3, the solid heat storage body 1-1 and the insulation layer 1-2 are fixed in the shell 1-19, so that the shell 1-19 and the multi-media heat exchange component 1-3, the solid heat storage body 1-1 and the insulation layer 1-2 are integrated, avoiding the need to push them into the container for transportation with the help of external rails.

[0086] In a specific embodiment, as shown in Figure 2, the multi-media heat exchange assembly 1-3 includes a heat exchanger 1-3-1, an evaporator 1-3-2, a medium type conversion valve 1-3-4, a medium output port 1-13, a medium input port 1-14, a safety valve 1-3-5, a liquid level gauge 1-3-3, a pressure sensor 1-3-6, and a temperature sensor 1-3-7. The heat exchanger 1-3-1 is located on a side wall of the thermal control room 1-28 and is connected to the solid heat storage body 1-1 via an air duct assembly. The evaporator 1-3-2 is connected to the heat exchanger 1-3-1 via both an upper header 1-3-8 and a lower header 1-3-9. The medium type conversion valve 1-3-4 is located on and connected to the lower header 1-3-9. The medium output port 1-13 is located at the top of the evaporator 1-3-2 and is connected to the evaporator 1-3-2. Medium inlet 1-14 is located at the bottom of lower header 1-3-9. Safety valve 1-3-5 is located on and connected to evaporator 1-3-2. Liquid level gauge 1-3-3 is connected to evaporator 1-3-2. Pressure sensor 1-3-6 is connected to evaporator 1-3-2. Temperature sensor 1-3-7 is connected to evaporator 1-3-2.

[0087] In this embodiment, the multi-media heat exchange assembly 1-3 is a component for exchanging the thermal energy stored in the solid heat storage body 1-1 with the heat medium required by the user.

[0088] The user connects the medium input pipe to the medium input port 1-14 to achieve the communication of the input medium pipe. The user connects the medium output pipe to the medium output port 1-13 to achieve the communication of the heat medium output pipe.

[0089] The heat exchanger 1-3-1 and the evaporation tank 1-3-2 are an integrated structure, which optimizes the system operation efficiency.

[0090] A medium type conversion valve 1-3-4 is provided on the lower header 1-3-9, which can be used for the output of more heat media.

[0091] A liquid level gauge 1-3-3 is connected to the side of evaporation tank 1-3-2 to monitor the water level inside evaporation tank 1-3-2. A pressure sensor 1-3-6 monitors the pressure inside evaporation tank 1-3-2, and a temperature sensor 1-3-7 monitors the temperature inside evaporation tank 1-3-2.

[0092] When overpressure occurs in the evaporation tank 1-3-2, the safety valve 1-3-5 releases the pressure in the evaporation tank 1-3-2.

[0093] It should be noted that the evaporation tank 1-3-2 is a vertical evaporation tank.

[0094] In this embodiment, the user can send any medium among water, steam and thermal oil into the heat exchanger 1-3-1, without the need to add additional equipment such as steam boiler and thermal oil furnace.

[0095] The tube passage during the heat exchange process is as follows: the target medium enters through the medium input port 1-14, enters the tube passage of the heat exchanger 1-3-1 through the lower header 1-3-9, and then enters the evaporator 1-3-2 through the upper header 1-3-8. The top of the evaporator 1-3-2 is provided with a medium output port 1-13 connected to the medium output pipeline. The lower part of the evaporator 1-3-2 is connected to the heat exchanger 1-3-1 through the lower header 1-3-9. Among them, the lower header 1-3-9 is connected to the medium type conversion valve 1-3-4. When the system medium is in forced circulation, the medium type conversion valve 1-3-4 is in a closed state. At this time, the multi-media heat exchange component 1-3 directly outputs the heat medium; when the system medium is in natural circulation, the medium type conversion valve 1-3-4 is in an open state. At this time, the evaporator 1-3-2 in the multi-media heat exchange component 1-3 outputs the heat medium that meets the standards to the user, and the heat medium that does not meet the standards is sent to the heat exchanger 1-3-1 again through the connection between the lower part of the evaporator 1-3-2 and the lower header 1-3-9 for secondary heating, and the cycle is repeated.

[0096] In a specific embodiment, as shown in Figure 2, the upper header 1-3-8 is disposed at the top of the heat exchanger 1-3-1 and connected to the heat exchanger 1-3-1. The lower header 1-3-9 is disposed at the bottom of the heat exchanger 1-3-1 and connected to the heat exchanger 1-3-1.

[0097] In a specific embodiment, as shown in Figure 1, the air duct assembly includes an induced draft duct 1-9, a circulating fan 1-4, and a return air duct 1-12. The induced draft duct 1-9 is provided at the shell-side inlet of the heat exchanger 1-3-1 and passes through the insulation layer 1-2 to connect to the high-temperature zone 1-7 of the solid thermal storage body 1-1. The circulating fan 1-4 is connected to the shell-side outlet of the heat exchanger 1-3-1. The return air duct 1-12 is connected to the circulating fan 1-4 and passes through the insulation layer 1-2 to connect to the low-temperature zone 1-8 of the solid thermal storage body 1-1.

[0098] In this embodiment, the air induction duct 1-9 is connected to the high-temperature zone 1-7 of the solid thermal accumulator 1-1, and the return air duct 1-12 is connected to the low-temperature zone 1-8 of the solid thermal accumulator 1-1, forming a multi-media heat exchange assembly 1-3. A circulating air path is formed between the multi-media heat exchange assembly 1-3, the circulating fan 1-4, and the solid thermal accumulator 1-1.

[0099] The high-temperature zone 1-7 is a closed cavity formed between the solid heat storage body 1-1 and the insulation layer 1-2 on the side close to the air duct 1-9, and is connected to the air duct 1-9. Furthermore, a passage opening can be provided in the closed cavity of the high-temperature zone 1-7 to facilitate the entry and exit of maintenance personnel. The low-temperature zone 1-8 is a closed cavity formed between the solid heat storage body 1-1 and the insulation layer 1-2 on the side away from the air duct 1-9, and is connected to the return air duct 1-12. Furthermore, a passage opening can be provided in the closed cavity of the low-temperature zone 1-8 to facilitate the entry and exit of maintenance personnel.

[0100] The end of the return air duct 1-12 away from the circulating fan 1-4 passes through the insulation layer 1-2 and is connected to the low-temperature zone 1-8 of the solid thermal accumulator 1-1, and then is heated by the array of hot air holes 1-6 located on the solid thermal accumulator 1-1, enters the high-temperature zone 1-7 of the solid thermal accumulator 1-1, passes through the induced air duct 1-9 and enters the heat exchanger 1-3-1 through the heat exchanger shell inlet 1-10 for heat exchange, and then is connected to the circulating fan 1-4 through the heat exchanger shell outlet 1-11, forming a shell-side circulation channel during the heat exchange process.

[0101] In a specific embodiment, as shown in FIG1 , the electric heating component includes a resistance wire 1-5, a first electrode 1-20, an insulating partition 1-31, and an electrode cover 1-30. The resistance wire 1-5 is evenly arranged in the array of hot air holes 1-6 of the solid heat storage body 1-1. The first electrode 1-20 passes through the insulation layer 1-2 on the side of the power connection room 1-29. One end of the first electrode 1-20 is located in the power connection room 1-29, and the other end is connected to the resistance wire 1-5. The insulating partition 1-31 has one end connected to the insulation layer 1-2 near the side of the multi-media heat exchange component 1-3, and the other end connected to the solid heat storage body 1-1. The electrode cover 1-30 is buckled onto the insulation layer 1-2 at the end of the first electrode 1-20 on the side of the power connection room 1-29.

[0102] In this embodiment, the electric heating assembly is the electrothermal conversion component of the skid-mounted solid electric thermal storage boiler assembly structure 1, converting external electrical energy into thermal energy. Resistive wires 1-5 are evenly arranged within the array of hot air holes 1-6 and connected to an external power source via a first electrode 1-20.

[0103] The insulating partition 1-31 is configured to establish the high temperature zone 1-7, and is made of high temperature resistant insulating material.

[0104] In the present disclosure, the solid heat storage body 1-1 is the heat storage part, which is arranged inside the shell 1-19, and is built with heat storage bricks 1-1-1 with mortise and tenon structure, and forms an array of hot air through holes 1-6 with front and rear through-hole structures. The adjacent heat storage bricks with mortise and tenon pit structures are coordinated and connected to form a reliable solid heat storage body 1-1 structure, combined with Figures 3 and 4.

[0105] The anti-displacement bolt 1-1-2 is bolted to the inner wall of the housing 1-19 and is a rod-shaped metal component that prevents the solid thermal accumulator 1-1 from shifting during transportation. The anti-displacement bolt 1-1-2 is capable of withstanding the impact of gravitational acceleration on the solid thermal accumulator 1-1 while also preventing the solid thermal accumulator 1-1 from shifting when the housing 1-19 is tilted at an angle of 45° or less during transportation.

[0106] When the equipment is in transport mode, anti-displacement bolts 1-1-2 must be installed on both the high-temperature zone 1-7 and the low-temperature zone 1-8 end faces of the solid thermal storage body 1-1. After the equipment is installed, remove the anti-displacement bolts 1-1-2 before powering on for trial operation.

[0107] In a specific embodiment, as shown in FIG1 , the air inlet assembly includes a first air inlet 1-27 and a second air inlet 1-22. The first air inlet 1-27 is disposed at the bottom of a housing 1-19 located in a thermal control room 1-28 and is connected to the bottom of the housing 1-19. The second air inlet 1-22 is disposed at the bottom of the housing 1-19 located in a power connection room 1-29 and is connected to the bottom of the housing 1-19.

[0108] For example, when multiple shells 1-19 are installed in duplex, the first air inlet 1-27 is moved from the bottom of the shell 1-19 in the thermal control room 1-28 to the side elevation of the shell 1-19 in the thermal control room 1-28, and the second air inlet 1-22 is moved from the bottom of the shell 1-19 in the power connection room 1-29 to the side elevation of the shell 1-19 in the power connection room 1-29.

[0109] In this embodiment, air enters the thermal control room 1-28 from the first air inlet 1-27 and enters the power connection room 1-29 from the second air inlet 1-22.

[0110] For example, the first air inlet 1-27 and the second air inlet 1-22 are both detachable structures made of metal steel partitions, which have the functions of ventilation and preventing foreign objects from entering.

[0111] In a specific embodiment, as shown in FIG1 , the exhaust assembly includes a first exhaust port 1-25, a second exhaust port 1-23, a first waterproof cover 1-26, and a second waterproof cover 1-24. The first exhaust port 1-25 is disposed on the top of the housing 1-19 located in the thermal control room 1-28 and is connected to the top of the housing 1-19. The second exhaust port 1-23 is disposed on the top of the housing 1-19 located in the power connection room 1-29 and is connected to the top of the housing 1-19. The first waterproof cover 1-26 is buckled onto the first exhaust port 1-25 on the side away from the thermal control room 1-28. The second waterproof cover 1-24 is buckled onto the second exhaust port 1-23 on the side away from the power connection room 1-29.

[0112] For example, when multiple shells 1-19 are installed in duplex, the first exhaust outlet is moved from the top of the shell 1-19 at the 1-25 thermal control room 1-28 to the side elevation of the shell 1-19 at the 1-25 thermal control room 1-28, and the second exhaust outlet 1-23 is moved from the top of the shell 1-19 at the power connection room 1-29 to the side elevation of the shell 1-19 at the 1-25 thermal control room 1-28, and powered exhaust can be performed.

[0113] In this embodiment, the first air outlet 1-25 and the first air inlet 1-27 of the thermally controlled room 1-28 form air convection, thereby ventilating and cooling the thermally controlled room 1-28. The first waterproof cover 1-26 does not affect the air flow of the first air outlet 1-25, but can also waterproof the first air outlet 1-25.

[0114] The second air outlet 1-23 and the second air inlet 1-22 of the power wiring room 1-29 form air convection, thereby ventilating and cooling the power wiring room 1-29. The second waterproof cover 1-24 does not affect the air circulation of the second air outlet 1-23, but can also waterproof the second air outlet 1-23.

[0115] For example, the first air outlet 1-25 and the second air outlet 1-23 are both detachable structures made of metal steel partitions, which have the functions of ventilation and preventing foreign objects from entering.

[0116] In a specific embodiment, as shown in FIG1 , the housing 1-19 further includes a fixed grounding point 1-18, an electrical connection channel opening 1-21, a medium input pipe reserved opening 1-15, a medium output pipe reserved opening 1-16, and an instrument pre-installation opening 1-17. The fixed grounding point 1-18 is located on the housing 1-19 in the power wiring room 1-29. The electrical connection channel opening 1-21 is located at the bottom of the housing 1-19 in the power wiring room 1-29 and is connected to the housing 1-19. The medium input pipe reserved opening 1-15 is located at the bottom of the housing 1-19 near the medium input opening 1-14 and is connected to the housing 1-19. The medium output pipe reserved opening 1-16 is located at the top of the housing 1-19 near the medium output opening 1-13 and is connected to the housing 1-19. The instrument pre-installation opening 1-17 is located at the top of the housing 1-19 near the evaporator 1-3-2 and is connected to the housing 1-19.

[0117] In this embodiment, an external power cable is connected to the first electrode 1-20 through the electrical connection channel opening 1-21 to connect the power supply. The medium input pipe is connected to the medium input port 1-14 through the medium input pipe reserved opening 1-15 to connect the input medium pipe. The medium output pipe is connected to the medium output port 1-13 through the medium output pipe reserved opening 1-16 to connect the heat medium output pipe.

[0118] In a possible embodiment, the instrument pre-installation port 1-17 can be shared with the medium output pipe reserved port 1-16, and the safety valve 1-3-5, the pressure sensor 1-3-6, and the temperature sensor 1-3-7 are installed on the top of the evaporation tank 1-3-2 through the corresponding instrument pre-installation port 1-17.

[0119] The medium input pipe is connected to the medium input port 1-14 through the medium input pipe reserved port 1-15 to realize the input medium pipe connection and realize the input of the medium; the medium output pipe is connected to the medium output port 1-13 through the medium output pipe reserved port 1-16 to realize the output of the medium.

[0120] In the present disclosure, the shell 1-19 is a shell 1-19 with a container structure, which has the characteristics and functions of an ordinary container in the transport state, can realize batch production in the factory workshop, facilitate overall delivery, and can also facilitate standardized transportation such as land transportation cars, trains or sea ships, and at the same time realize standardized loading and unloading such as dock cranes or truck cranes.

[0121] In a specific embodiment, referring to Figures 5 and 13 , the equipment foundation assembly 4 includes a concrete foundation 4-1, a grounding grid 4-3, a reserved grounding point 4-2, a cable trench 4-4, and a drainage ditch 4-5. The concrete foundation 4-1 is disposed below the housing 1-19 and connected to the housing 1-19. The grounding grid 4-3 is disposed below the concrete foundation 4-1 and connected to the ground. The reserved grounding point 4-2 is disposed above the concrete foundation 4-1 and connected to the grounding grid 4-3. The cable trench 4-4 is disposed within the concrete foundation 4-1 located in the power wiring room 1-29. The drainage ditch 4-5 is disposed within the concrete foundation 4-1 located in the thermal control room 1-28.

[0122] In this embodiment, the reserved grounding point 4-2 is connected to the fixed grounding point 1-18 via a metal conductor to achieve leakage protection during operation.

[0123] For example, the concrete foundation 4-1 is provided on the upper portion of the foundation, and the surface of the concrete foundation 4-1 is 300 mm higher than the indoor ground and has a bearing capacity of not less than 50 kPa. The grounding resistance is less than or equal to 4 ohms.

[0124] In the present disclosure, illustratively, the maximum operating temperature of the solid thermal storage body 1-1 is below 1000°C. Due to the load-bearing capacity of the container and the limitations of transport vehicles and roads, and considering the weight of the shell 1-19 and other components, the weight of the solid thermal storage body 1-1 is below 30,000 kg. After removing the basic temperature inside the solid thermal storage body 1-1 which is lower than the heat release requirement of the heat exchange medium, the effective heat storage capacity of the solid thermal storage body 1-1 is approximately 4,000 kWh. According to the relationship between the product of the thermal storage electric power and the thermal storage time being equal to the thermal storage amount, it can be seen that changing the thermal storage time can change the input electrical power of the equipment.

[0125] In the present disclosure, according to different application requirements, the shell 1-19 is divided into a long shell 1-19-1 and a short shell 1-19-2.

[0126] For example, as shown in Figure 13, a skid-mounted solid electric thermal storage boiler assembly structure 1 of this embodiment is shown with an elongated housing 1-19-1 installed. With the elongated housing 1-19-1 installed, the skid-mounted solid electric thermal storage boiler assembly structure 1 is suitable for both outdoor and indoor use. More specifically, an electrical control cabinet 2 can be installed within the housing 1-19, providing the skid-mounted solid electric thermal storage boiler assembly structure 1 with waterproof and foreign object protection.

[0127] For example, as shown in Figure 14, it is a combination structure 1 of a skid-mounted solid electric thermal storage boiler without a thermal control room 1-28, a power connection room 1-29, a first waterproof cover 1-26, a second waterproof cover 1-24, a first air outlet 1-25, a second air outlet 1-23, a first air inlet 1-27 and a second air inlet 1-22. The combination structure 1 of the skid-mounted solid electric thermal storage boiler is in the installation state of a short shell 1-19-2, is only suitable for indoor use, and the electric control cabinet 2 is set independently from it.

[0128] For example, as shown in Figure 9, when the medium is steam: the medium type conversion valve 1-3-4 is opened to adapt to the heating system configured for the steam heat user 6 operating at a pressure of 0.1MPa to 3.8MPa, to achieve steam output of rated parameters, the water treatment system 6-4 is connected to the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers through the water pump 6-1 and the water pipe 6-2. The combination structure 1 of the three combined skid-mounted solid electric heat storage boilers is an A-phase device, a B-phase device and a C-phase device. The water pipe 6-2 sends the water into the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers, and then after being heated to steam of rated parameters by the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers, it is output to the steam heat user 6 through the steam output pipe 6-3 connected to the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers. Furthermore, when the steam operating pressure of the steam heat user 6 is between 3.81 MPa and 9.8 MPa, the evaporator 1-3-2 adopts a horizontal evaporator and is placed above the outside of the shell 1-19, so that the evaporation liquid level in the horizontal evaporator forms a potential difference with the heat exchanger 1-3-1, thereby ensuring that a stable natural circulation operation state is established at a pressure of 3.81 MPa to 9.8 MPa to output saturated steam.

[0129] For example, as shown in Figure 10, when the medium is water: the medium type conversion valve 1-3-4 is closed to adapt to the heating circulation system configured by the hot water heat user 7 to achieve hot water output with rated parameters. The hot water process pipeline is connected to the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers through the circulating water pump 7-1 and the return water pipe 7-4. The combination structure 1 of the three combined skid-mounted solid electric heat storage boilers is A-phase equipment, B-phase equipment and C-phase equipment. The return water pipe 7-4 sends the return water into the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers. After being heated to hot water with rated parameters by the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers, the return water is output to the hot water heat user 7 through the water supply pipe 7-5 connected to the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers. The water after releasing the heat energy flows into the circulating water pump 7-1 again through the pipeline for recycling. When the heating circulation system is short of water, the water supply pump 7-2 supplies water in the water supply treatment system 7-3 to the return water pipe 7-4 through the pipeline.

[0130] For example, as shown in FIG11 , when the medium is thermal oil: the medium type conversion valve 1-3-4 is closed to adapt to the heating system configured by the thermal oil heat user 8 to achieve the rated parameter thermal oil output, the thermal oil process pipeline is connected to the thermal oil integrated system 8-1 through the pipeline respectively through the thermal oil return pipe 8-2 to the combination structure 1 of the three combined skid-mounted solid electric thermal storage boilers, the combination structure 1 of the three combined skid-mounted solid electric thermal storage boilers is A phase equipment, B phase equipment and C phase equipment, the three combined skids The heat transfer oil return pipe 8-2 in the combined structure 1 equipped with the solid electric heat storage boiler sends the heat transfer oil into the combined structure 1 of the three combined skid-mounted solid electric heat storage boilers. After being heated to the rated parameters by the combined structure 1 of the three combined skid-mounted solid electric heat storage boilers, the heat transfer oil is output to the heat transfer oil heat user 8 through the heat transfer oil supply pipe 8-3 connected to the combined structure 1 of the three combined skid-mounted solid electric heat storage boilers. After releasing the heat energy, the heat transfer oil enters the heat transfer oil integrated system 8-1 again through the pipeline for recycling.

[0131] For example, as shown in Figure 12, when the medium is wet steam: the medium type conversion valve 1-3-4 is closed to be suitable for using oilfield wastewater to produce high-temperature wet steam with a water content of 20%, replacing the steam injection boiler to provide wet steam heat users 9 with wet steam output that meets the needs of oilfield production wellheads. The wet steam process pipeline is sent from the source water treatment system 9-1 through the pipeline by the water supply pipeline 9-3 and the plunger pump 9-2 located on the water supply pipeline 9-3 to the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers. The combination structure 1 of the three combined skid-mounted solid electric heat storage boilers is A-phase equipment, B-phase equipment and C-phase equipment. After being heated to the rated parameters of wet steam by the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers, it is output to the wet steam heat user 9 through the wet steam output pipeline 9-4 connected to the combination structure 1 of the three combined skid-mounted solid electric heat storage boilers.

[0132] In a possible embodiment, the operating voltage of the combined structure 1 of a single skid-mounted solid electric thermal storage boiler is below 1000V.

[0133] For example, referring to Figures 1 and 6 , the skid-mounted solid electric thermal storage boiler assembly 1 of this embodiment integrates a solid thermal storage body 1-1, an electric heating structure 3, an insulation layer 1-2, a multi-media heat exchange assembly 1-3, and an electrical control cabinet 2, and is suitable for operating voltages less than 1000V. The power supply 5 is divided into three-phase lines, namely, an A-phase power lead 5-1, a B-phase power lead 5-2, and a C-phase power lead 5-3, which are connected to the skid-mounted solid electric thermal storage boiler assembly 1 for power supply. A skid-mounted solid electric thermal storage boiler assembly 1 can be designed as a 300kW to 800kW power consumption device, and is suitable for outputting different media such as hot water, steam, and thermal oil.

[0134] In a possible embodiment, the operating voltage of the combined structure 1 of three skid-mounted solid electric thermal storage boilers is 6 kV to 10 kV.

[0135] For example, referring to Figures 1 and 7 , the combined structure 1 of three skid-mounted solid electric thermal storage boilers in this embodiment integrates a solid thermal storage body 1-1, an electric heating structure 3, an insulation layer 1-2, a multi-media heat exchange assembly 1-3, and an electrical control cabinet 2, and is suitable for an operating voltage of 10 kV. The power supply 5 is connected in a star configuration, with the A-phase power lead 5-1, the B-phase power lead 5-2, and the C-phase power lead 5-3 connected to each of the three skid-mounted solid electric thermal storage boilers, forming a 1000 kW to 2400 kW power consumption device suitable for outputting various media such as hot water, steam, and thermal oil.

[0136] For example, referring to Figures 1 and 8 , the combined structure 1 of three skid-mounted solid electric thermal storage boilers in this embodiment integrates a solid thermal storage body 1-1, an electric heating structure 3, an insulation layer 1-2, a multi-media heat exchange assembly 1-3, and an electrical control cabinet 2, and is suitable for an operating voltage of 6 kV. The power supply 5 is connected in a delta configuration, with the A-phase power lead 5-1, the B-phase power lead 5-2, and the C-phase power lead 5-3 connected to each of the three skid-mounted solid electric thermal storage boilers. This constitutes a 1000 kW to 2400 kW power consumption device suitable for outputting various media such as hot water, steam, and thermal oil.

[0137] In one possible embodiment, when a user requires a combination structure 1 of multiple skid-mounted solid electric thermal storage boilers, the overall single-layer arrangement cannot be achieved due to limited site area. Therefore, a duplex installation structure is used to solve this problem. As shown in Figure 15, the duplex installation structure includes longitudinal auxiliary load-bearing members 4-6, transverse platform members 4-7, and ladders 4-8. The longitudinal auxiliary load-bearing members 4-6 are respectively vertically arranged on the concrete foundation 4-1. The transverse platform members 4-7 are vertically connected to the longitudinal auxiliary load-bearing members 4-6. The ladder 4-8 is longitudinally arranged between the transverse platform members 4-7 and is connected to the transverse platform members 4-7.

[0138] For example, as shown in FIG15 , based on the user's desired number of skid-mounted solid electric thermal storage boiler assembly structures 1, the target number of skid-mounted solid electric thermal storage boiler assembly structures 1 are arranged in m horizontal rows and n vertical layers. The number m rows × n layers equals the user's desired number of skid-mounted solid electric thermal storage boiler assembly structures 1.

[0139] According to design requirements, a gap of sufficient width is left between adjacent skid-mounted solid electric thermal storage boiler assembly structures 1 on each floor to meet the required width of the personnel work passage. The second-layer transverse platform members 4-7 are installed on top of the skid-mounted solid electric thermal storage boiler assembly structure 1 located on the bottom first layer. Transverse platform members 4-7 not only meet the operational needs of personnel on this layer, but also serve to pull and secure the adjacent skid-mounted solid electric thermal storage boiler assembly structures 1 on this layer, making the duplex installation structure resistant to typhoons and magnitude 7 earthquakes. By repeating the operations in this embodiment, the installation of the skid-mounted solid electric thermal storage boiler assembly structures 1 on the third, fourth, through nth layers can be completed.

[0140] For example, when the skid-mounted solid electric heat storage boiler assembly structure 1 lacks sufficient load-bearing capacity for the n layers of skid-mounted solid electric heat storage boiler assembly structures 1 above it, longitudinal auxiliary load-bearing members 4-6 are installed on the sides of the transverse platform members 4-7, so that the transverse platform members 4-7, even after being connected to the longitudinal auxiliary load-bearing members 4-6, have load-bearing capacity. This reduces the load-bearing capacity of the skid-mounted solid electric heat storage boiler assembly structure 1 for the n layers of skid-mounted solid electric heat storage boiler assembly structures 1 above it. According to design requirements, m rows of skid-mounted solid electric heat storage boiler assembly structures 1 are sequentially installed above the first layer of skid-mounted solid electric heat storage boiler assembly structure 1 at the bottom, and ladders 4-8 are then installed between the transverse platform members 4-7 on each layer.

[0141] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A combined structure of a skid-mounted solid electric thermal storage boiler, wherein, Comprising: A housing; A thermal control compartment, arranged on one side inside the housing; A multi-media heat exchange assembly, located inside the thermal control compartment; A solid heat storage body, arranged inside the housing and connected to the multi-media heat exchange assembly through an air duct assembly; An electric heating assembly, connected to the solid heat storage body; A heat insulation layer, sleeved between the solid heat storage body and the housing, connected to the air duct assembly and also connected to the solid heat storage body; Anti-displacement bolt rods, arranged on the housing and connected to the solid heat storage body; A power supply wiring compartment, arranged on the other side inside the housing; An air inlet assembly, arranged at the bottom of the housing; An air exhaust assembly, arranged at the top of the housing; An electric control cabinet, electrically connected to both the multi-media heat exchange assembly and the electric heating assembly; An equipment foundation assembly, connected to the lower part of the housing.

2. The combined structure of the skid-mounted solid electric thermal storage boiler according to claim 1, wherein, The multi-media heat exchange assembly includes: A heat exchanger, arranged on a side wall of the thermal control compartment and connected to the solid heat storage body through the air duct assembly; An evaporation tank, connected to the heat exchanger through an upper header and a lower header; A medium type conversion valve, arranged on the lower header and connected to the lower header; A medium outlet, arranged at the top of the evaporation tank and connected to the evaporation tank; A medium inlet, arranged at the bottom of the lower header; A safety valve, arranged on the evaporation tank and connected to the evaporation tank; A liquid level gauge, connected to the evaporation tank; A pressure sensor, connected to the evaporation tank; A temperature sensor, connected to the evaporation tank.

3. The combined structure of the skid-mounted solid electric heat storage boiler according to claim 2, wherein, The upper header is arranged at the top of the heat exchanger and connected to the heat exchanger; The lower header is arranged at the bottom of the heat exchanger and connected to the heat exchanger.

4. The combined structure of the skid-mounted solid electric heat storage boiler according to claim 2, wherein, The air duct assembly includes: An induced air channel, arranged on the inlet side of the shell side of the heat exchanger and passing through the heat insulation layer to be connected to the high-temperature area of the solid heat storage body; A circulation fan, connected to the outlet of the shell side of the heat exchanger; A return air channel, communicating with the circulation fan and passing through the heat insulation layer to communicate with the low-temperature area of the solid heat storage body.

5. The combined structure of the skid-mounted solid electric heat storage boiler according to claim 1, wherein, The electric heating assembly includes: Resistance wires, uniformly arranged in the array of hot air through holes of the solid heat storage body; A first electrode, passing through the heat insulation layer on the side of the power supply wiring compartment, with one end of the first electrode located in the power supply wiring compartment and the other end connected to the resistance wires; An insulating partition, with one end connected to the heat insulation layer near the multi-media heat exchange assembly side and the other end connected to the solid heat storage body; An electrode cover, buckled on the heat insulation layer at the end of the first electrode on the side of the power supply wiring compartment.

6. The combined structure of the skid-mounted solid electric thermal storage boiler according to claim 1, wherein, The air inlet assembly includes: A first air inlet, arranged at the bottom of the housing at the location of the thermal control compartment and connected to the bottom of the housing; A second air inlet, arranged at the bottom of the housing at the location of the power supply wiring compartment and connected to the bottom of the housing.

7. The combined structure of the skid-mounted solid electric thermal storage boiler according to claim 1, wherein, The air exhaust assembly includes: A first air outlet, arranged at the top of the housing at the location of the thermal control compartment and connected to the top of the housing; The second air outlet is arranged at the top of the housing at the power connection room and is connected to the top of the housing; The first waterproof cover is buckled on the first air outlet away from the side of the thermal control room; The second waterproof cover is buckled on the second air outlet away from the side of the power connection room.

8. The combined structure of the skid-mounted solid electric heat storage boiler according to claim 2, wherein, The housing further includes: A fixed grounding point is arranged on the housing at the power connection room; The electrical connection channel opening is arranged at the bottom of the housing at the power connection room and is connected to the housing; The reserved opening for the medium input pipe is arranged at the bottom of the housing near the medium input port and is connected to the housing; The reserved opening for the medium output pipe is arranged at the top of the housing near the medium output port and is connected to the housing; The pre-installation opening for the instrument is arranged at the top of the housing near the evaporation tank and is connected to the housing.

9. The combined structure of the skid-mounted solid electric heat storage boiler according to claim 1, wherein, The equipment foundation assembly includes: The concrete foundation is arranged at the lower part of the housing and is connected to the housing; The grounding grid is arranged at the lower part of the concrete foundation and is connected to the ground; The reserved grounding point is arranged on the upper part of the concrete foundation and is connected to the grounding grid; The cable trench is arranged in the concrete foundation at the power connection room; The drainage ditch is arranged in the concrete foundation at the thermal control room.

10. The combined structure of the skid-mounted solid electric thermal storage boiler according to claim 9, wherein, It further includes a compound installation structure, and the compound installation structure includes: The longitudinal auxiliary load-bearing members are respectively vertically arranged on the concrete foundation; The transverse platform member is vertically connected to the longitudinal auxiliary load-bearing member; The ladder is longitudinally arranged between the transverse platform members and is connected to the transverse platform members.

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