Steam generation and storage system

Abstract

The invention relates to the technical field of energy recycling, in particular to a steam generation and storage system which comprises a bearing rail, middle storage compartments and side storage compartments, the middle storage compartments and the side storage compartments are movably connected to the upper portion of the bearing rail, and the middle storage compartments are clamped between the two side storage compartments which are transversely and symmetrically arranged. Spherical exchange control mechanisms are arranged between the butt joint surfaces of the side storage compartments and the middle storage compartments and between the butt joint surfaces of every two adjacent middle storage compartments; the top of the middle storage compartment and the top of the side storage compartment are connected with steam outlets, an electricity-fire dual-purpose heating pipe is arranged at the bottom in the middle storage compartment, every two transversely adjacent electricity-fire dual-purpose heating pipes are connected through a transfer pipe, and a conduction circuit is arranged in each transfer pipe to communicate two sets of electric heating wires with the two ends in butt joint; the spherical exchange control mechanism comprises a rotating core and a control rod connected to the rotating core, and a control motor is connected to the control rod; according to the scheme, array cluster operation and multi-energy cooperative heating are achieved, different steam demands are flexibly adapted, the communication or isolation state of the multiple compartment bodies is controllable, and the steam taking position is flexible and selectable.

Description

Technical Field

[0001] This invention relates to the field of energy recovery and utilization technology, specifically to a steam generation and storage system. Background Technology

[0002] Steam is an important secondary energy source in industrial production, and it is widely used in heating, power driving, reaction media and other processes. Steam generation and storage systems are important carriers of industrial steam and have huge potential for technological upgrades.

[0003] Firstly, if the capacity flexibility of the steam generation and storage system is insufficient: as a fixed-volume single-unit structure, it is impossible to dynamically adjust the heat storage scale according to the actual production load, resulting in energy waste at low loads and limited supply capacity at high loads.

[0004] Secondly, if the energy utilization of the steam generation and storage system is singular: relying on a single energy source (such as pure electric heating or pure gas combustion) makes it difficult to integrate the large amount of waste heat resources (such as high-temperature hot air) existing in industrial production, resulting in low comprehensive energy utilization rate; and a single energy source is easily affected by supply fluctuations (such as gas pressure and peak and off-peak electricity prices), resulting in poor stability.

[0005] Third, if the heat storage units of the steam generation and storage system have poor coordination: in multi-unit equipment, the steam flow and pressure balance between each heat storage chamber lack precise control means, which can easily lead to problems such as excessive local pressure and uneven steam distribution, affecting both steam quality and shortening equipment life.

[0006] Therefore, developing a steam generation and storage system with modular capacity adjustment, multi-energy synergy, precise on / off control, and uniform heating characteristics can achieve technological breakthroughs and significantly improve energy utilization efficiency, which is in line with the concept of green and environmentally friendly development. Summary of the Invention

[0007] The purpose of this invention is to provide a steam generation and storage system that can realize array cluster operation and multi-energy coordinated heating. It is suitable for industrial scenarios such as chemical industry, manufacturing, and heating that require a stable steam supply. It can efficiently utilize industrial waste heat and flexibly adapt to different steam demand. Multiple compartments can be flexibly connected or isolated, and the steam access location can be flexibly selected.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A steam generation and storage system includes a support rail and a central storage compartment and a side storage compartment movably connected above it. The central storage compartment and the side storage compartment are set at the same height and the distance between them is variable. Two side storage compartments arranged laterally symmetrically sandwich several central storage compartments. A spherical exchange control mechanism is provided between the docking surfaces of the side storage compartments and the central storage compartments, as well as between the docking surfaces of two adjacent central storage compartments. The top of the middle storage compartment and the side storage compartment are each connected to a steam outlet. The bottom of the middle storage compartment is equipped with an electric-fire dual-purpose heating tube. The electric-fire dual-purpose heating tube includes an internal combustion tube arranged in a continuous S-shape. The tube wall of the internal combustion tube is provided with a coiled heating wire. Two horizontally adjacent electric-fire dual-purpose heating tubes are connected by a transfer tube. The transfer tube is provided with a conductive circuit to connect the two sets of heating wires connected at both ends. The spherical exchange control mechanism includes a rotating core and a control rod vertically connected above it. The outer sidewalls of the middle storage compartment and the side storage compartment are provided with hemispherical recesses and rotating rod grooves to accommodate the rotating core and the control rod respectively. The upper end of the control rod is connected to a control motor.

[0009] Furthermore, the electric-fire dual-purpose heating tube is raised by a heat-equalizing support mesh plate to separate it from the inner bottom surface of the middle storage compartment, and two horizontally adjacent electric-fire dual-purpose heating tubes are arranged at a 90° rotation angle.

[0010] Furthermore, the top of the central storage tank is connected to a water supply pipe, and the number of central storage tanks between the two side storage tanks is 1 to 8.

[0011] Furthermore, the transfer pipe is located outside the central storage compartment, and several electric-fire dual-purpose heating pipes are connected in series through the transfer pipe. The two electric-fire dual-purpose heating pipes located at both ends are respectively connected to the fire inlet pipe and the smoke exhaust pipe.

[0012] Furthermore, the top of the middle storage compartment and the side storage compartment are provided with a separable top cover, the lower end of the steam outlet is connected to the bottom surface of the top cover, and the upper end of the steam outlet is connected to an on / off control valve; the control motor is installed at a height higher than the top cover.

[0013] Furthermore, a transverse opening is provided at the center of the hemispherical recess, and a transverse channel at the center of the rotating core is provided at the same height as the transverse opening. A sliding sealing ring is provided between the transverse channel and the transverse opening. The diameter of the transverse channel and the transverse opening is the same. The rotating core rotates with the control rod to change the size of the docking steam flow channel between the transverse channel and the transverse opening.

[0014] Furthermore, the fire inlet pipe includes a high-temperature combustion-supporting pipe that is connected to one end of the electric-fire dual-purpose heating pipe. A combustible pipe is inserted through the high-temperature combustion-supporting pipe. One end of the combustible pipe extends into the electric-fire dual-purpose heating pipe and is connected to a nozzle. A spark ignition device is provided next to the nozzle.

[0015] Furthermore, both the fire inlet pipe and the smoke exhaust pipe are embedded with conductive wires and are respectively connected to the positive and negative terminals of the electric heating power supply device. The end of the conductive wire near the electric-fire dual-purpose heating tube is connected to a plug terminal for mating with the heating wire.

[0016] Furthermore, both the bottom of the central storage compartment and the side storage compartment are connected to sliders with matching double-row load-bearing rails.

[0017] Furthermore, the transfer pipe is U-shaped with the concave end facing upwards, and the transfer pipe, the fire inlet pipe, and the smoke exhaust pipe are all located below the central storage compartment and the side storage compartment.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention discloses a steam generation and storage system that realizes modular and flexible expansion of heat storage capacity. The modular capacity is adjustable: through the sliding connection between the bearing rail and the slider, the number of intermediate storage chambers can be adjusted between 1 and 8, and the total steam volume can be flexibly adapted to different loads to avoid energy waste. 2. The steam generation and storage system disclosed in this invention integrates gas combustion, electric power assistance and industrial waste heat (high temperature hot air), and is designed to use the "industrial waste heat + gas combustion + electric power assistance" mode to build a multi-energy collaborative heating system, reduce gas and electricity consumption and improve energy utilization. 3. The steam generation and storage system disclosed in this invention uses a spherical exchange control mechanism to precisely adjust the steam flow and pressure balance between each heat storage compartment unit, and the steam extraction location can be flexibly selected. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the longitudinal section structure of the present invention; Figure 5 This is a schematic diagram of the spherical exchange control mechanism in this invention; Figure 6 This is a schematic cross-sectional view of the fire inlet tube in this invention; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of the heating wire in this invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 10 for Figure 9 Enlarged view of point C in the middle; Figure 11 This is a schematic diagram of the circuit connection structure of the present invention; Figure 12 This is a schematic diagram illustrating the cluster size usage status in an embodiment of the present invention; The markings in the diagram are: 1. Load-bearing rail; 2. Middle storage compartment; 3. Spherical exchange control mechanism; 301. Rotating core; 302. Control rod; 303. Control motor; 4. Electric-fire dual-purpose heating tube; 5. Transfer pipe; 6. Support mesh plate; 7. Water supply pipe; 8. Fire inlet pipe; 801. High-temperature combustion-supporting pipe; 802. Combustible gas pipe; 803. Nozzle; 804. Spark ignition device; 9. Exhaust pipe; 10. On / off control valve; 11. Plug-in terminal; 12. Slider; 13. Steam outlet; 14. Top cover; 15. Side storage compartment. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that if the terms "upper", "lower", "middle", "inner", "outer" are used to indicate the direction or positional relationship based on the direction or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] Please refer to the following: Figures 1-12 A steam generation and storage system includes a support rail 1 and a middle storage compartment 2 and a side storage compartment 15 movably connected above it. The bottom of the middle storage compartment 2 and the side storage compartment 15 are connected to sliders 12 that match the double-row support rail 1. The support rail 1 adopts a double-row parallel track structure to provide basic support for the movement and positioning of the heat storage unit.

[0022] The central storage tank 2 and the side storage tanks 15 are set at the same height and the distance between them is variable. Each central storage tank 2 has a volume of ≥5m³ and is made of Q345R pressure vessel steel. Two side storage tanks 15 are arranged laterally symmetrically, sandwiching several central storage tanks 2 between them. In a specific embodiment, the number of central storage tanks 2 set between two side storage tanks 15 is 1 to 8. The total steam storage volume is proportional to the number of central storage tanks 2 set, forming a modular energy storage array that can be flexibly configured according to usage needs and has high utilization efficiency.

[0023] Steam pressure is closely related to temperature. The steam generator has limited internal steam capacity; when pressure drops rapidly, the steam saturation temperature decreases sharply. A spherical exchange control mechanism 3 is installed between the mating surfaces of the side storage compartment 15 and the middle storage compartment 2, as well as between the mating surfaces of two adjacent middle storage compartments 2. This mechanism is assembled synchronously when adjacent compartments are connected. The spherical exchange control mechanism 3 controls the steam flow and pressure balance between the middle storage compartment 2, the side storage compartment 15, and adjacent middle storage compartments 2. For details, refer to [reference needed]. Figure 5As shown, it includes a rotating core 301 and a control rod 302 vertically connected above it. The outer side walls of the middle storage compartment 2 and the side storage compartment 15 are provided with hemispherical recesses and rotating rod grooves to accommodate the rotating core 301 and the control rod 302 respectively. The upper end of the control rod 302 is connected to a control motor 303. A transverse opening is provided in the center of the hemispherical recess. A transverse channel with the same height as the transverse opening is provided in the center of the rotating core 301. A sliding sealing ring is provided between the transverse channel and the transverse opening. The diameter of the transverse channel and the transverse opening is the same. The rotating core 301 rotates with the control rod 302 to change the size of the connecting steam flow channel between the transverse channel and the transverse opening. The working principle of the aforementioned technical solution is as follows: the control motor 303 drives the control rod 302 to rotate the rotating core 301, changing the docking area between the transverse channel and the transverse opening, thereby adjusting the steam flow rate between adjacent compartments or realizing the on / off state; through the coordinated action of multiple sets of joint mechanisms, the pressure in each unit compartment can be balanced; the spherical exchange control mechanism 3 realizes stepless adjustment of the flow area through the rotation of the rotating core 301, which can control the steam on / off state and balance the pressure of each unit in real time, thereby extending the system life by more than 15%.

[0024] In this embodiment, an electric-fire dual-purpose heating pipe 4 is installed at the bottom of the inner storage compartment 2, for reference. Figure 9 and Figure 11 Two horizontally adjacent electric-fire dual-purpose heating tubes 4 are arranged at a 90° rotation angle to facilitate the connection of pipes in adjacent compartments. The electric-fire dual-purpose heating tube 4 includes an internal combustion pipe arranged in a continuous S-shape, which helps to increase the heat transfer contact area. The internal combustion pipe has coiled heating wires inside or outside the pipe wall. Two horizontally adjacent electric-fire dual-purpose heating tubes 4 are connected by a transfer pipe 5. The transfer pipe 5 is equipped with a conductive circuit to connect the two sets of heating wires connected at both ends, realizing the series connection of multiple heating tube circuits. The transfer pipe 5 is located outside the middle storage compartment 2. Several electric-fire dual-purpose heating tubes 4 are connected in series through the transfer pipe 5. The two electric-fire dual-purpose heating tubes 4 located at both ends are respectively connected to the fire inlet pipe 8 and the smoke exhaust pipe 9.

[0025] Specific combination Figure 6 The fire inlet pipe 8 includes a high-temperature combustion-supporting pipe 801 that is connected to one end of the electric-fire dual-purpose heating pipe 4 and is connected to the input of high-temperature hot air generated in the industry. A combustible pipe 802 is inserted through the high-temperature combustion-supporting pipe 801. One end of the combustible pipe 802 extends into the electric-fire dual-purpose heating pipe 4 and is connected to a nozzle 803. A spark ignition device 804 is provided next to the nozzle to realize the mixed combustion of gas and combustion-supporting air.

[0026] The structure of the electric heating circuit is as follows Figure 11 As shown, both the fire inlet pipe 8 and the smoke exhaust pipe 9 are embedded with high-temperature resistant conductive wires, which are respectively connected to the positive and negative poles of the electric heating power supply device to realize the access of electrical energy. The end of the conductive wire close to the electric-fire dual-purpose heating tube 4 is connected to the plug terminal 11 that connects to the heating wire to realize the conduction of current.

[0027] Furthermore, in a further optimized design, the electric-fire dual-purpose heating pipe 4 is raised by the heat-equalizing support mesh plate 6 to separate it from the inner bottom surface of the central storage compartment 2. The top of both the central storage compartment 2 and the side storage compartment 15 are connected to a steam outlet 13. The top of the central storage compartment 2 is connected to a water supply pipe 7 for replenishing softened water into the compartment. The top of the central storage compartment 2 and the side storage compartment 15 are equipped with a detachable top cover 14. The top cover 14 is designed to facilitate opening for inspection and maintenance of internal components. The lower end of the steam outlet 13 is connected to the bottom surface of the top cover 14, and the upper end of the steam outlet 13 is connected to an on / off control valve 10, which can be opened and closed independently to allow flexible access to steam from any storage compartment. It can also be used to generate and store steam in a multi-compartment array by controlling the spherical exchange control mechanism 3. The control motor 303 is set at a height higher than the top cover 14, and each spherical exchange control mechanism 3 is controlled independently. The transfer pipe 5 is U-shaped with the notch facing upwards and is assembled after the adjacent compartments are in contact and connected. The transfer pipe 5, the fire inlet pipe 8 and the smoke exhaust pipe 9 are all located below the middle storage compartment 2 and the side storage compartment 15, which saves space and facilitates installation and maintenance. The smoke exhaust pipe 9 is subsequently connected to the gas purification treatment device through an external pipeline to meet environmental emission requirements.

[0028] The system operation in this embodiment includes stages of water replenishment, heating, heat storage regulation, steam supply, and heat preservation: Water replenishment stage: Softened water is injected into each intermediate storage tank 2 through the water replenishment pipeline 7 to the set liquid level. At this time, the spherical exchange control mechanism 3 is in the off state, and each unit is independently sealed.

[0029] Heating stage: Gas-waste heat co-heating: High-temperature industrial hot air is input into the high-temperature combustion pipe 801, and the combustible gas pipe 802 delivers the gas to the nozzle 803. The spark ignition device 804 ignites the gas and hot air inside the internal combustion pipe, and the heat conduction heats the water outside the pipe to generate steam. Electric auxiliary heating: When the residual heat is insufficient or rapid heating is required, the electric heating power supply device is activated. The current is conducted to the heating wire through the conductive wire and the plug-in terminal 11 to assist heating. The electric heating mechanism is also used for steam insulation.

[0030] Heat storage regulation stage: After the water temperature rises and steam is generated, the control motor 303 drives the rotor 301 to rotate, adjusts the flow area of ​​the spherical exchange control mechanism 3, and balances the pressure of each compartment unit (if the pressure is too high, the flow area is increased, the high pressure unit releases pressure to the low pressure unit, and all on / off mechanisms are opened when centralized heat storage is required).

[0031] Steam supply stage: Open the on / off control valve 10 of the corresponding heat storage unit according to demand, and steam is output from the steam outlet 13. The location of steam supply can be flexibly selected. The steam supply rate can be adjusted by the opening degree of the on / off control valve, and the conduction state between adjacent compartments can be adjusted by the ball exchange control mechanism to realize multi-compartment joint steam supply.

[0032] Insulation stage: After the steam demand decreases or the heat storage temperature is reached, the gas supply is turned off, and the heating wire operates at low power to maintain the temperature and pressure in the chamber and reduce heat loss.

[0033] The steam generation and storage system disclosed in this technical solution can achieve the following: Figure 12 The array cluster shown utilizes industrially generated hot air as a combustion-supporting component, inputting it into the electric-fire dual-purpose heating tube 4. This, combined with the heat generated from gas combustion, produces steam for industrial production. Electricity is used for auxiliary heating or insulation, ensuring a continuous and stable steam supply. It can meet the intermittent high-load steam demand of chemical enterprises. Through several flexibly configured intermediate storage tanks, it generates steam for heat storage, achieving a stable steam supply at all times, reducing energy costs by more than 20%. The pressure fluctuation of each unit in the system is ≤0.25MPa, ensuring a stable steam supply of quality.

[0034] In summary, the steam generation and storage system of the present invention effectively improves the flexibility, efficiency and stability of industrial steam supply through modularization, multi-energy synergy and precise control, and has significant economic and environmental value.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. For those skilled in the art, various changes, modifications or additions made without departing from the concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A steam generation and storage system, comprising a support rail (1) and a middle storage compartment (2) and a side storage compartment (15) movably connected above it, wherein two side storage compartments (15) arranged laterally symmetrically sandwich a plurality of middle storage compartments (2), and a spherical exchange control mechanism (3) is provided between the mating surfaces of the side storage compartments (15) and the middle storage compartments (2) and between the mating surfaces of two middle storage compartments (2) to each other; The top of the middle storage compartment (2) and the side storage compartment (15) are both connected to steam outlets (13). The bottom of the middle storage compartment (2) is provided with an electric-fire dual-purpose heating pipe (4). The electric-fire dual-purpose heating pipe (4) includes an internal combustion pipe and an electric heating wire is coiled inside or outside the pipe wall. Two horizontally adjacent electric-fire dual-purpose heating pipes (4) are connected by a transfer pipe (5) that is connected by an electrical circuit. The spherical exchange control mechanism (3) includes a rotating core (301) and a control rod (302) connected above it. The side walls of the middle storage compartment (2) and the side storage compartment (15) are provided with hemispherical recesses and rotating rod grooves.

2. The steam generation and storage system according to claim 1, characterized in that: The electric-fire dual-purpose heating tube (4) is raised and spaced apart from the inner bottom surface of the middle storage compartment (2) by the heat-equalizing support mesh plate (6), and the two horizontally adjacent electric-fire dual-purpose heating tubes (4) are arranged in a 90° rotation angle relationship.

3. The steam generation and storage system according to claim 2, characterized in that: The top of the central storage tank (2) is connected to a water supply pipe (7), and the number of central storage tanks (2) between the two side storage tanks (15) is 1 to 8.

4. A steam generation and storage system according to claim 3, characterized in that: The transfer pipe (5) is located outside the central storage compartment (2). Several electric-fire dual-purpose heating pipes (4) are connected in series through the transfer pipe (5). The electric-fire dual-purpose heating pipes (4) at both ends are respectively connected to the fire inlet pipe (8) and the smoke exhaust pipe (9).

5. A steam generation and storage system according to claim 1, characterized in that: The top of the middle storage compartment (2) and the side storage compartment (15) are provided with a separable top cover (14). The lower end of the steam outlet (13) is connected to the bottom surface of the top cover (14), and the upper end of the steam outlet (13) is connected to an on / off control valve (10). The control motor (303) is set at a height higher than the top cover (14).

6. A steam generation and storage system according to claim 1, characterized in that: A transverse opening is provided at the center of the hemispherical recess, and a transverse channel at the center of the rotating core (301) is provided at the same height as the transverse opening. A sliding sealing ring is provided between the transverse channel and the transverse opening.

7. A steam generation and storage system according to claim 4, characterized in that: The fire inlet pipe (8) includes a high-temperature combustion-supporting pipe (801), a combustible pipe (802) is inserted through the high-temperature combustion-supporting pipe (801), one end of the combustible pipe (802) extends into the electric-fire dual-purpose heating pipe (4) and is connected to a nozzle (803), and a spark ignition device (804) is provided on the side of the nozzle.

8. A steam generation and storage system according to claim 7, characterized in that: Both the fire inlet pipe (8) and the smoke exhaust pipe (9) are embedded with conductive wires and are respectively connected to the positive and negative poles of the electric heating power supply device. One end of the conductive wire near the electric-fire dual-purpose heating pipe (4) is connected to a plug-in terminal (11) for docking with the heating wire.

9. A steam generation and storage system according to claim 1, characterized in that: The bottom of both the middle storage compartment (2) and the side storage compartment (15) is connected to a slider (12) that matches the double-row load-bearing rails (1).

10. A steam generation and storage system according to claim 4, characterized in that: The transfer pipe (5) is U-shaped with the concave opening facing upwards. The transfer pipe (5), the fire inlet pipe (8), and the smoke exhaust pipe (9) are all located below the middle storage compartment (2) and the side storage compartment (15).

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