Heat storage device

Abstract

The utility model provides a heat storage device, and relates to the technical field of heat storage, the heat storage device comprises a container, the container is provided with a steam inlet and a steam outlet, a part of space in the container is used for storing liquid water, the steam inlet is used for being connected with steam supply equipment, and the steam outlet is used for being connected with steam demand equipment; the pipe group is arranged in the container, and the pipe group is communicated with the steam inlet; the multiple first pipelines are distributed in the container, one end of each first pipeline communicates with the pipe set, the other end of each first pipeline is in a blocked state, the side wall of each first pipeline communicates with multiple steam spraying pipe nozzles, the steam spraying pipe nozzles are arranged in liquid water, and the situation that the load of the boiler fluctuates greatly due to the complex steam requirement is avoided; the stability of steam pipeline pressure fluctuation and boiler operation is improved, and the purposes of overall operation stability, energy conservation and consumption reduction are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat storage, and more specifically, relates to a heat storage device. Background Art

[0002] At present, in the field of municipal engineering, the steam demand fluctuates greatly during the treatment of intermittent sludge in the thermal hydrolysis process of urban sewage treatment plants. The complex steam demand of thermal hydrolysis brings about large fluctuations in boiler load, resulting in fluctuations in steam pipeline pressure and unstable boiler operation. The boiler needs to be started and stopped frequently, and the energy consumption is unstable. Utility Model Content

[0003] The purpose of the utility model is to provide a heat storage device to address the deficiencies in the existing technology, so as to solve the problems raised in the above background technology that the complex steam demand of thermal hydrolysis causes large fluctuations in boiler load, resulting in fluctuations in steam pipeline pressure and unstable boiler operation, frequent boiler starts and stops, and unstable energy consumption.

[0004] In order to achieve the above object, the utility model provides a heat storage device, which comprises:

[0005] A container, wherein the container is provided with a steam inlet and a steam outlet, a part of the space in the container is used to store liquid water, the steam inlet is used to connect to a steam supply device, and the steam outlet is used to connect to a steam demand device;

[0006] a tube group, the tube group being arranged in the container and being in communication with the steam inlet;

[0007] A plurality of first pipelines are distributed in the container, one end of each of the first pipelines is connected to the tube group, the other end of the first pipeline is in a blocked state, and the side wall of each of the first pipelines is connected to a plurality of steam nozzles, and the steam nozzles are arranged in the liquid water.

[0008] Preferably, the tube set comprises:

[0009] A main pipeline, one end of which is connected to the steam inlet, and the other end of which is in a blocked state;

[0010] A plurality of second pipelines, one end of each of the plurality of second pipelines being connected to the main pipeline;

[0011] A plurality of dispersed pipelines are respectively connected to the other ends of the plurality of second pipelines, the dispersed pipelines are in an annular shape, and each annular dispersed pipeline is connected to one end of at least six of the first pipelines.

[0012] Preferably, the side wall of each of the first pipelines is connected to multiple layers of steam nozzles, and the number of the steam nozzles in each layer is at least four.

[0013] Preferably, the lengths of the multiple layers of steam nozzles gradually decrease from bottom to top, and the mouths of the steam nozzles are provided with inclined mouth surfaces, which face obliquely upwards.

[0014] Preferably, the heat storage device further comprises a plurality of sleeves, wherein the plurality of sleeves are respectively sleeved on a plurality of the first pipelines, and the plurality of steam injection nozzles on each of the first pipelines are arranged in one of the sleeves.

[0015] Preferably, the diameter of the sleeve gradually decreases from the bottom end of the sleeve to the top end of the sleeve.

[0016] Preferably, the sleeve is in an arc-shaped trumpet shape.

[0017] Preferably, the heat storage device further comprises a support frame, the support frame is connected to the inner side of the container, and the tube group is connected to the support frame.

[0018] Preferably, the container is provided with a water inlet and a water outlet.

[0019] Preferably, the container is cylindrical, and both ends of the cylindrical container are provided with heads, and the head at one end is provided with an inlet.

[0020] The utility model provides a heat storage device, which has the following beneficial effects: part of the space of the container of the heat storage device is used to store liquid water, the steam inlet of the heat storage device is used to connect the steam supply equipment, the steam outlet is used to connect the steam demand equipment, the pipe group connected to the steam inlet is connected to multiple first pipelines, and multiple steam nozzles are connected to the side wall of each first pipeline, and the steam nozzles are arranged in the liquid water. During the operation of the heat storage device, when the heat load used by the steam demand equipment is less than the rated evaporation capacity, that is, the steam production capacity of the steam supply equipment, the pressure of the steam supply equipment will increase, and the steam will pass through the steam nozzle of the heat storage device and be sprayed into the liquid water in the container. Since the steam temperature is higher than the liquid water temperature, the steam will quickly condense and release heat, so that the temperature of the liquid water in the container increases and becomes saturated water. At the same time, the water level also rises, and the saturated steam pressure of the corresponding steam space also increases. This is the heat charging process of the heat storage device. When the heat load used by the steam demand equipment is greater than the rated evaporation capacity, that is, the steam production capacity of the steam supply equipment, The pressure of the steam supply equipment will decrease until it drops below the saturated steam pressure of the steam space. At this time, the saturated water in the container will become superheated water and will flash evaporate and release heat. The secondary steam generated by the drop in water level is used to supplement the steam used by the steam supply equipment. This is the heat release process of the heat storage device. Through the heat storage device, the functions of heat storage and heat release are achieved, and the fluctuations in steam flow and pressure are balanced. At the same time, the layout of the pipe group and the multiple first pipelines and the distribution of the multiple steam nozzles optimize the design of the steam pipeline in the container 1, optimize the layout of the steam nozzles, increase the circulation speed of the liquid water in the heat storage device, improve the steam injection efficiency, uniformity and effective heat exchange performance, and improve the heat transfer efficiency so that more energy can be transferred to the liquid water, so as to stabilize the instantaneous fluctuation of steam demand on the steam demand equipment side, that is, stabilize the boiler operation, and then avoid the large fluctuation of boiler load caused by complex steam demand, improve the pressure fluctuation of the steam pipeline and the stability of boiler operation, and achieve the purpose of overall operation stability and energy saving and consumption reduction.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0023] Figure 1 A schematic diagram of the front view and cross-sectional view of a heat storage device according to an embodiment of the utility model is shown;

[0024] Figure 2A schematic structural diagram showing the distribution of dispersed pipelines of a heat storage device according to an embodiment of the utility model is shown;

[0025] Figure 3 A schematic diagram of the front view and cross-sectional structure of a sleeve of a heat storage device according to an embodiment of the utility model is shown;

[0026] Figure 4 A schematic diagram of the distribution structure of a steam injection nozzle of a heat storage device according to an embodiment of the utility model is shown.

[0027] Description of reference numerals:

[0028] 1. Container; 2. Steam inlet; 3. Steam outlet; 4. First pipeline; 5. Steam nozzle; 6. Main pipeline; 7. Second pipeline; 8. Distributor pipeline; 9. Sleeve; 10. Support frame; 11. Water inlet; 12. Drainage outlet; 13. Population; DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0030] like Figure 1 As shown, the utility model provides a heat storage device, which includes:

[0031] A container 1 is provided with a steam inlet 2 and a steam outlet 3. Part of the space in the container 1 is used to store liquid water. The steam inlet 2 is used to connect to a steam supply device, and the steam outlet is used to connect to a steam demand device.

[0032] A tube group, the tube group is arranged in the container 1, and the tube group is connected with the steam inlet 2;

[0033] Multiple first pipelines 4 are distributed in the container 1, one end of each of the first pipelines 4 is connected to the pipe group, the other end of the first pipeline 4 is in a blocked state, and the side wall of each first pipeline 4 is connected to multiple steam nozzles 5, and the steam nozzles 5 are set in liquid water.

[0034] Specifically, in order to solve the problem that the complex steam demand of thermal hydrolysis brings about a large fluctuation in boiler load, resulting in fluctuation in steam pipeline pressure and unstable boiler operation, the boiler needs to be frequently started and stopped, and energy consumption is unstable, the utility model provides a heat storage device, the steam supply device of the heat storage device can be a boiler, the steam demand device of the heat storage device can be a thermal hydrolysis device or a heating device, the liquid water of the heat storage device can be softened water, the container 1 is filled with about 70% softened water, and the space above the water surface of the liquid water in the container 1 is a steam space. During the operation of the heat storage device, the heat storage device is charged by converting the steam of the steam supply device into hot water, that is, saturated water, and the heat release is achieved by converting the saturated water into flash steam, that is, secondary steam;

[0035] When the heat load of the steam demand equipment is less than the rated evaporation capacity of the steam supply equipment, i.e., the steam production capacity, the pressure of the steam supply equipment will increase, and the steam will be sprayed into the liquid water in the container 1 through the steam nozzle 5 of the heat storage device. Since the steam temperature is higher than the liquid water temperature, the steam will quickly condense and release heat, causing the liquid water temperature in the container 1 to increase and become saturated water. At the same time, the water level also rises, and the saturated steam pressure of the corresponding steam space also increases. This is the heat charging process of the heat storage device;

[0036] When the heat load of the steam demand equipment is greater than the rated evaporation capacity of the steam supply equipment, i.e., the steam production capacity, the pressure of the steam supply equipment will decrease, that is, the pressure in the steam supply pipe of the boiler will decrease until it drops below the saturated steam pressure of the steam space. At this time, the saturated water in the container 1 will become superheated water, and will flash evaporate and release heat by itself. The secondary steam generated by the drop in water level is used to supplement the steam used by the steam demand equipment. This is the heat release process of the heat storage device.

[0037] Through the heat storage device, it is appropriately converted into the required energy form. Therefore, the pressure in the heat storage device is constantly changing, and the fluctuation range will be between the pressure on the steam supply equipment side and the steam demand equipment side, so as to meet the continuous storage and release of heat according to the actual working conditions, balance the fluctuations of steam flow and pressure, and achieve energy balance and efficient utilization. At the same time, the layout of the pipe group and multiple first pipelines 4 and the distribution of multiple steam nozzles 5 optimize the design of the steam pipeline in the container 1, optimize the layout of the steam nozzles 5, increase the circulation speed of liquid water in the heat storage device, improve the steam injection efficiency, uniformity and effective heat exchange performance, and improve the heat transfer efficiency, so that more energy can be transferred to the liquid water, so as to stabilize the instantaneous fluctuation of steam consumption on the steam demand equipment side, that is, stabilize the boiler operation, and then avoid complex steam demand causing large fluctuations in boiler load, improve the steam pipeline pressure fluctuations and the stability of boiler operation, and achieve the overall operation stability and energy saving and consumption reduction purposes.

[0038] like Figure 1 and Figure 2As shown, preferably, the tube set includes:

[0039] A main pipe 6, one end of which is connected to the steam inlet 2, and the other end of which is in a blocked state;

[0040] A plurality of second pipelines 7, one end of each of the plurality of second pipelines 7 being connected to the main pipeline 6;

[0041] The plurality of dispersed pipelines 8 are respectively connected to the other ends of the plurality of second pipelines 7 , the dispersed pipelines 8 are ring-shaped, and each ring-shaped dispersed pipeline 8 is connected to one end of at least six first pipelines 4 .

[0042] Specifically, the structural design of the tube group of the heat storage device is optimized, mainly from the two aspects of fluid mechanics and improving heat exchange efficiency. The tube group consists of multiple second pipelines 7 and multiple annular dispersion pipelines 8. Each annular dispersion pipeline 8 is connected to one end of at least six first pipelines 4. The side wall of each first pipeline 4 is connected to multiple steam injection nozzles 5, so that the steam of the entire heat storage device is evenly distributed on the horizontal cross section, optimizing the steam fluid mechanics design, reducing flow resistance, increasing the circulation speed of the water medium in the heat storage device, and improving the uniformity of the overall layout of steam injection.

[0043] like Figure 3 and Figure 4 As shown, preferably, the side wall of each first pipeline 4 is connected to a plurality of steam nozzles 5, and the number of the steam nozzles 5 in each layer is at least four.

[0044] The length of the multi-layer steam spray nozzle 5 gradually decreases from bottom to top, and the mouth of the steam spray nozzle 5 is provided with an inclined mouth surface, and the inclined mouth surface faces obliquely upward.

[0045] Specifically, there are four steam nozzles 5 on each layer, and the four steam nozzles 5 on each layer are arranged in a cross shape. The design of multiple layers of steam nozzles 5 and the inclined mouth surface facing obliquely upward optimizes the flow of steam fluid and improves the steam injection efficiency, uniformity and effective heat exchange performance.

[0046] like Figure 3 As shown, preferably, the heat storage device further comprises a plurality of sleeves 9 , which are respectively sleeved on the plurality of first pipelines 4 , and the plurality of steam nozzles 5 on each first pipeline 4 are arranged in one sleeve 9 .

[0047] Preferably, the diameter of the sleeve 9 gradually decreases from the bottom end of the sleeve 9 to the top end of the sleeve 9 .

[0048] Preferably, the sleeve 9 is in an arc-shaped trumpet shape.

[0049] Specifically, the arc-shaped trumpet-shaped sleeve 9 improves the efficiency of heat exchange and energy storage between steam and cold water. At the same time, it increases the heat exchange surface area between the steam and the tube wall of the tube group, improves the heat transfer efficiency, so that more energy can be transferred to the liquid water, so that the water is heated evenly and efficiently, which can effectively save heat energy and reduce heat energy loss. It has the advantages of good heat storage effect, low investment, simple structure, and simple operation. The steam after heat exchange overflows from the top of the arc-shaped trumpet-shaped sleeve 9, reaches the upper steam space, and is released from the steam outlet 3 to be supplied to the rear-end sequential batch thermal hydrolysis production.

[0050] Preferably, the heat storage device further comprises a support frame 10 , the support frame 10 is connected to the inner side of the container 1 , and the tube group is connected to the support frame 10 .

[0051] Specifically, the support frame 10 is used to support the pipe group.

[0052] Preferably, the container 1 is provided with a water inlet 11 and a water outlet 12 .

[0053] Specifically, when the heat storage device is used for the first time or when replenishing water, cold liquid water enters from the water inlet 11 , and when the device is under maintenance or stopped for a long time, the liquid water is discharged from the drain outlet 12 .

[0054] Preferably, the container 1 is cylindrical, and both ends of the cylindrical container 1 are provided with heads, and the head at one end is provided with an inlet 13.

[0055] Specifically, population 13 is used for the installation, maintenance and safety inspection of the heat storage device.

[0056] In summary, when the heat storage device provided by the utility model is implemented, its core principle is to store excess heat when energy supply exceeds demand, and release the stored heat when demand exceeds supply, so as to achieve energy balance and efficient utilization. The heat storage device stores thermal energy by storing steam. In the energy storage stage, excess steam is transported to the container 1 through the pipe group, absorbed and stored in liquid water. When energy demand increases, the thermal energy stored in the container 1 is released and converted into the required energy form through appropriate conversion. Therefore, the pressure in the heat storage device is constantly changing, and the fluctuation range is between the pressure on the steam supply device side and the pressure on the steam demand device side, so as to meet the actual working conditions. Continuously store and release heat to achieve energy balance and efficient utilization. At the same time, the pipe group of the heat storage device is structurally optimized, mainly from the two aspects of fluid mechanics and improving heat exchange efficiency. The pipe group consists of multiple second pipelines 7 and multiple annular The heat storage device is composed of a dispersion pipeline 8, each of which is in an annular dispersion pipeline 8 and is connected to one end of at least six first pipelines 4. The side wall of each first pipeline 4 is connected to a plurality of steam injection nozzles 5, so that the steam of the overall heat storage device is evenly distributed on the horizontal cross section, the steam fluid mechanics design is optimized, the flow resistance is reduced, the circulation speed of the water medium in the heat storage device is increased, and the uniformity of the overall layout of the steam injection is improved, so that more energy can be transferred to the liquid water, so as to achieve the instantaneous fluctuation of steam demand on the steam demand equipment side, that is, to stabilize the boiler operation, and further, avoid the large fluctuation of the boiler load caused by complex steam demand, improve the pressure fluctuation of the steam pipeline and the stability of the boiler operation, and achieve the purpose of overall operation stability and energy saving and consumption reduction.

[0057] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A heat storage device, characterized in that: The heat storage device comprises: A container, wherein the container is provided with a steam inlet and a steam outlet, a part of the space in the container is used to store liquid water, the steam inlet is used to connect to a steam supply device, and the steam outlet is used to connect to a steam demand device; a tube group, the tube group being arranged in the container and being in communication with the steam inlet; A plurality of first pipelines are distributed in the container, one end of each of the first pipelines is connected to the tube group, the other end of the first pipeline is in a blocked state, and the side wall of each of the first pipelines is connected to a plurality of steam nozzles, and the steam nozzles are arranged in the liquid water.

2. A heat storage device according to claim 1, characterized in that: The tube set comprises: A main pipeline, one end of which is connected to the steam inlet, and the other end of which is in a blocked state; A plurality of second pipelines, one end of each of the plurality of second pipelines being connected to the main pipeline; A plurality of dispersed pipelines are respectively connected to the other ends of the plurality of second pipelines, the dispersed pipelines are in an annular shape, and each annular dispersed pipeline is connected to one end of at least six of the first pipelines.

3. A heat storage device according to claim 1, characterized in that: The side wall of each of the first pipelines is connected to multiple layers of steam spray nozzles, and the number of the steam spray nozzles in each layer is at least four.

4. A heat storage device according to claim 3, characterized in that: The lengths of the multiple layers of the steam nozzles gradually decrease from bottom to top, and the mouths of the steam nozzles are provided with inclined mouth surfaces, which face obliquely upwards.

5. A heat storage device according to claim 1, characterized in that: The heat storage device further comprises a plurality of sleeves, wherein the plurality of sleeves are respectively sleeved on the plurality of the first pipelines, and the plurality of the steam injection nozzles on each of the first pipelines are arranged in one of the sleeves.

6. A heat storage device according to claim 5, characterized in that: The diameter of the sleeve gradually decreases from the bottom end of the sleeve to the top end of the sleeve.

7. A heat storage device according to claim 6, characterized in that: The sleeve is in an arc trumpet shape.

8. A heat storage device according to claim 1, characterized in that: The heat storage device also includes a support frame, which is connected to the inner side of the container, and the tube group is connected to the support frame.

9. A heat storage device according to claim 1, characterized in that: The container is provided with a water inlet and a water outlet.

10. A heat storage device according to claim 1, characterized in that: The container is cylindrical, and both ends of the cylindrical container are provided with heads, and the head at one end is provided with an inlet.

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