A spherical tank heat accumulator

Abstract

The application belongs to the technical field of steam utilization, and specifically provides a spherical tank heat accumulator, which comprises a spherical tank, a steam-water separation device, a pipeline heat exchange system and a pipeline support system installed in the spherical tank; the pipeline heat exchange system comprises multiple layers of annular pipes arranged in sequence from top to bottom, the annular pipes in each layer are connected through axial pipes, the uppermost layer and the lowermost layer of annular pipes are respectively connected with one gas inlet pipe, and multiple steam nozzles are arranged on the annular pipes; the pipeline support system comprises a stand and multiple layers of support platforms arranged in sequence from top to bottom along the axial direction of the stand, and one layer of annular pipes is fixedly arranged on each support platform; the steam-water separation device is installed on the upper part of the spherical tank; and the two gas inlet pipes are connected with the gas inlets on the top of the spherical tank after passing through the steam-water separation device. The internal structure of the spherical tank heat accumulator can well adapt to the stress, expansion and contraction and other requirements in the spherical tank, and the technical problems of the existing spherical tank heat accumulator in installation, maintenance and full play of the function of the heat accumulator are solved.

Description

Technical Field

[0001] This invention belongs to the field of steam utilization technology, and specifically relates to a spherical tank heat accumulator. Background Technology

[0002] Enterprises typically use waste heat recovery equipment to recover waste heat generated during their processes, using it to produce low-pressure saturated steam and achieving good economic benefits. For waste heat recovery systems in intermittent production, since the steam production mode and steam usage mode are often inconsistent, only heat storage can ensure the full utilization of the recovered steam. Currently, the commonly used variable-pressure steam accumulators are all cylindrical accumulators. Due to limitations in manufacturing processes and transportation conditions, the diameter of the cylinder generally does not exceed 3.4m, and the volume does not exceed 200m³. 3 To meet production demands, multiple cylindrical variable-pressure steam accumulators are often used in parallel to compensate for the limited heat storage capacity of a single accumulator. However, using cylindrical variable-pressure steam accumulators in parallel presents problems such as system complexity, numerous accessories, high equipment investment, large footprint, and significant maintenance requirements, failing to adequately meet user needs. Therefore, spherical tank accumulators have emerged in the market. Compared to cylindrical containers, spherical tank accumulators offer advantages such as smaller footprint, lower investment, larger heat storage capacity, and simplified system. Furthermore, the internal stress conditions of spherical tank accumulators differ from traditional accumulators, requiring consideration of different thermal expansion and contraction factors. While the internal structure and arrangement of traditional cylindrical accumulators are well-established, they are not well-suited for spherical tank accumulators. Therefore, this invention provides a spherical tank accumulator whose internal structure effectively adapts to the stress and expansion / contraction requirements within the spherical tank. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problems existing in the installation, maintenance and full utilization of the function of existing spherical tank accumulators.

[0004] To address this, the present invention provides a spherical tank heat accumulator, comprising: a spherical tank and a steam-water separation device, a pipeline heat exchange system, and a pipeline support system installed within the spherical tank; the pipeline heat exchange system comprises multiple layers of ring pipes arranged sequentially from top to bottom, each layer of ring pipes being connected by an axial pipe, the uppermost and lowermost layers of the ring pipes each being connected to an air inlet pipe, and multiple steam nozzles being provided on the ring pipes; the pipeline support system comprises a column and multiple layers of support platforms arranged sequentially from top to bottom along the axial direction of the column, each support platform corresponding to one of the ring pipes, with one layer of the ring pipes fixedly placed on each layer of the support platform; the steam-water separation device is installed on the upper part of the spherical tank; two air inlet pipes pass through the steam-water separation device and are connected to the air inlet at the top of the spherical tank.

[0005] Specifically, each layer of the above-mentioned ring pipe consists of multiple concentric circular pipes, and each concentric circular pipe is connected to the others by radial pipes.

[0006] Specifically, the aforementioned pipeline heat exchange system also includes a flow guiding device, which is disposed around the periphery of the multi-layered ring pipe.

[0007] Specifically, the aforementioned support platform is a polygonal frame composed of multiple radial beams and multiple circumferential beams; the annular pipe is fixed to the support platform by sliding pipe clamps.

[0008] Specifically, the aforementioned pipeline support system also includes a fixed platform installed above the column; the fixed platform is a polygonal frame composed of multiple radial beams and multiple circumferential beams, with a fixed bracket flexibly connected to the end of the radial beam away from the column, and the radial beam can slide radially relative to the fixed bracket within the mounting ring; the fixed bracket is welded to the inner wall of the spherical tank.

[0009] Specifically, the aforementioned vapor-water separation device includes a structural layer; the structural layer is an inverted frustum-shaped frame structure; the bottom surface and each side surface inside the structural layer are covered with flow equalization perforated plates, forming a flow equalization perforated plate layer; the bottom surface and each side surface outside the structural layer are covered with corrugated plates, forming a corrugated plate layer; each side corrugated plate extends along its top edge into the structural layer, contacting the top edge of the corresponding side flow equalization perforated plate, thus enclosing the structural layer within the flow equalization perforated plate layer and the corrugated plate layer, forming an inverted frustum-shaped vapor-water separation device.

[0010] Specifically, the bottom of the aforementioned steam-water separator is provided with an inspection port; the inspection port is equipped with a cover for protection.

[0011] Specifically, the intersection of the downward extensions of the side edges of the above-mentioned structural layer coincides with the center of the spherical tank.

[0012] Specifically, the aforementioned gas cylinder accumulator also includes a mounting bracket; the gas-water separator is installed inside the gas cylinder via the mounting bracket.

[0013] Specifically, the aforementioned gas-water separator is provided with an oblong mounting hole; the mounting bracket includes a bracket body, a buffer pad, a pin, and a cotter pin. The bracket body has a connecting hole, and the pin passes through the buffer pad, the connecting hole, and the oblong mounting hole in sequence, and cooperates with the cotter pin to achieve a detachable connection between the mounting bracket and the structural layer.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] The spherical tank accumulator provided by this invention consists of a steam-water separation device suitable for spherical tanks, a pipeline heat exchange system, and a pipeline support system. The steam-water separation device is shaped like an inverted frustum, wider at the top and narrower at the bottom. The extensions of the side edges intersect at the center of the spherical tank accumulator, making it particularly suitable for spherical tank accumulators. The bottom and side surfaces are divided into corrugated plate layers, structural layers, and flow equalization plate layers in the thickness direction, which can effectively achieve steam and water separation during steam release. By adjusting the height of the frustum, the effective area of ​​the steam-water separation device can be easily adjusted, which can well adapt to the internal shape and stress conditions of the spherical tank accumulator. The steam-water separation device has a simple structure and low cost. Each surface is a plane, and the edges of each surface are either straight lines or standard arcs, making it simple to manufacture and easy for mass production. It can be detachably connected to the spherical tank accumulator with the help of mounting brackets, and an inspection port is provided at the bottom, which is beneficial for installation and subsequent maintenance. The employed pipe heat exchange system consists of layered loop pipes, ensuring the stability and reliability of the entire system and uniform heat exchange during the process. A flow guiding device installed outside the loop pipes facilitates the circulation and exchange of water at different temperatures within the spherical tank, ensuring uniform heat exchange at different depths and achieving the goals of fully utilizing the spherical tank's heat accumulator volume while guaranteeing equipment safety. The support platform in the pipe support system consists of multiple radial and circumferential beams, particularly suitable for fixing the aforementioned pipe heat exchange system and adapting to the thermal expansion of the pipes. The uppermost fixed platform of the pipe support system has radial beams resting within the mounting rings of the fixed brackets, allowing for radial relative sliding and effectively accommodating the thermal expansion characteristics of the spherical tank shell.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the spherical tank heat accumulator provided by the present invention.

[0018] Figure 2 This is a schematic diagram of the pipeline heat exchange system structure of the spherical tank accumulator provided by the present invention.

[0019] Figure 3 This is a schematic diagram of the pipeline structure in the pipeline heat exchange system of the spherical tank accumulator provided by the present invention.

[0020] Figure 4 This is a schematic diagram of the flow guiding device structure in the pipeline heat exchange system of the spherical tank accumulator provided by the present invention.

[0021] Figure 5 This is a schematic diagram of the pipeline support system structure of the spherical tank accumulator provided by the invention.

[0022] Figure 6 This is a schematic diagram of the fixed support structure of the spherical tank heat accumulator provided by the invention.

[0023] Figure 7This is a schematic diagram of the steam-water separation device of the spherical tank accumulator provided by the present invention.

[0024] Figure 8 This is a schematic diagram of the structural layers of the steam-water separation device for the spherical tank accumulator provided by the present invention.

[0025] Figure 9 This is a schematic diagram of the flow equalization perforated plate structure of the steam-water separation device of the spherical tank accumulator provided by the present invention.

[0026] Figure 10 This is a schematic diagram of the corrugated plate structure of the steam-water separation device of the spherical tank accumulator provided by the present invention.

[0027] Figure 11 This is a schematic diagram of the mounting bracket structure of the steam-water separation device for the spherical tank accumulator provided by the present invention.

[0028] Reference numerals: 100, spherical tank; 101, air inlet; 200, steam-water separator; 201, structural layer; 202, flow equalization perforated plate layer; 203, inspection door; 204, corrugated plate layer; 205, side ridge; 206, mounting oval hole; 300, pipeline heat exchange system; 301, air inlet pipe; 302, ring pipe; 303, radial pipe; 304, axial pipe; 305, flow guiding device; 400, pipeline support system; 401, column; 402, fixed platform; 403, support platform; 500, fixed bracket; 501, mounting ring; 502, fixed plate; 600, mounting bracket; 601, bracket body; 602, buffer pad; 603, pin; 604, cotter pin. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Although representative embodiments of the present invention have been described in detail, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments, but should be defined by the appended claims and their equivalents.

[0030] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the 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 invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] Reference Figure 1 This invention provides a spherical tank heat accumulator, comprising: a spherical tank 100 and a steam-water separator 200, a pipeline heat exchange system 300, and a pipeline support system 400 installed within the spherical tank 100; the pipeline heat exchange system 300 includes multiple layers of ring pipes 302 arranged sequentially from top to bottom, each layer of ring pipes 302 being connected by an axial pipe 304, and each of the uppermost and lowermost ring pipes 302 being connected to an air inlet pipe 301; multiple steam nozzles are provided on the ring pipes 302, and the steam nozzles can be arranged axially symmetrically. In use, the ring pipe 302 portion of the pipeline heat exchange system 300... The system is arranged in water; the pipeline support system 400 is used to support the fixed pipeline heat exchange system 300, including a column 401 and multiple support platforms 403 arranged sequentially from top to bottom along the axial direction of the column 401. Each support platform 403 corresponds to a ring pipe 302, and a ring pipe 302 is fixedly placed on each layer of the support platform 403; the steam-water separator 200 is installed on the upper part of the spherical tank 100 and located in the vapor phase space; the two air inlet pipes 301 pass through the steam-water separator 200 and are connected to the air inlet 101 at the top of the spherical tank 100.

[0032] The overall structure of the pipe heat exchange system 300 is divided into multiple layers of ring pipes 302 from top to bottom. Each layer of ring pipes 302 is preferably as follows: Figure 3 The system consists of several concentric circular tubes, with radial pipes connecting each concentric tube. This layered, circumferentially symmetrical arrangement ensures the stability and reliability of the entire system during heat exchange, and guarantees uniform heat exchange.

[0033] To ensure uniform heat exchange at different water depths, the pipeline heat exchange system 300 also includes a flow guiding device 305 disposed around the periphery of the multi-layered annular pipe 302, such as... Figure 2 and Figure 4 As shown, the flow guiding device 305 is arranged close to the outer ring of all the ring pipes 302 to realize the circulation and exchange of water layers with different temperatures in the spherical tank 100, making full use of the volume of the spherical tank 100 and ensuring equipment safety.

[0034] The support platform 403 of the pipeline support system 400 can be designed as follows: Figure 5The polygonal frame shown consists of multiple radial beams and multiple circumferential beams. The ring pipe 302 is fixed to the support platform 403 by sliding pipe clamps, which realizes the installation and fixation of the pipeline heat exchange system 300 while also well adapting to the thermal expansion of the pipeline.

[0035] To facilitate the installation and fixation of the pipeline support system 400 inside the spherical tank 100, a fixing platform 402 is designed at the top of the column 401. Its structure can be the same as the support platform 403, consisting of multiple radial beams and multiple circumferential beams. A fixing bracket 500 is flexibly connected to the end of each radial beam away from the column 401. In a detailed embodiment, the structure of the fixing bracket 500 is as follows: Figure 6 As shown, it includes an installation ring 501 made of corrosion-resistant material and a fixing plate 502 fixed on the installation ring 501. The fixing bracket 500 is welded to the inner wall of the spherical tank 100 through the fixing plate 502. The radial beam of the fixing platform 402 rests in the installation ring 501 and can slide relative to it radially, which can well adapt to the thermal expansion characteristics of the shell of the spherical tank 100.

[0036] Reference Figures 7-10 The vapor-water separation device 200 used in the spherical tank accumulator of the present invention includes a structural layer 201 with an inverted frustum-shaped frame structure. The bottom and sides of the internal structure layer 201 are covered with flow equalization perforated plates, forming a flow equalization perforated plate layer 202; the bottom and sides of the external structure layer 201 are covered with corrugated plates, forming a corrugated plate layer 204; each side corrugated plate extends inward along its top edge into the structure layer 201, contacting the top edge of the corresponding side flow equalization perforated plate, thus enclosing the structure layer 201 within the flow equalization perforated plate layer 202 and the corrugated plate layer 204, forming the inverted frustum-shaped vapor-water separation device 200. In use, the vapor-water separation device 200 is installed in the vapor phase region within the spherical tank accumulator. The height of the inverted frustum-shaped vapor-water separator can be adjusted according to actual conditions so that the effective area of ​​the vapor-water separation device 200 meets the usage requirements.

[0037] To ensure better integration of the gas-water separator 200 with the spherical tank accumulator, the top edges of both the side flow equalization plate and the side corrugated plate are arc-shaped with the center of the spherical tank 100 as the center, and these arcs can match the spherical surface inside the spherical tank 100. Figure 8 As shown, the intersection of the downward extensions of the side edges 205 of the structural layer 201 coincides with the center of the sphere of the spherical tank 100.

[0038] Furthermore, the bottom surface of the gas-water separator 200 is provided with an inspection port; an inspection door 203 is installed on the inspection port for covering. When the gas-water separator 200 is put into use, other structures located below the gas-water separator 200 inside the spherical tank 100 can be inspected and maintained through the inspection port.

[0039] Furthermore, multiple stiffeners are provided on the inner surface of the flow equalization orifice plate layer 202 that does not contact the structural layer 201 to increase the strength and rigidity of the flow equalization orifice plate layer 202 and improve the service life of the steam-water separator 200. Preferably, the stiffeners are arranged in a crisscross pattern on the inner surface of the flow equalization orifice plate layer 202.

[0040] In a detailed embodiment, the side wave plate of the wave plate layer 204 includes a wave plate frame and wave plate units, with the wave plate units embedded in the wave plate frame, thereby improving the stability of the wave plate layer 204.

[0041] Preferably, the bottom surface of the gas-water separator 200 is a regular polygon, and the perforated plates and corrugated plates on each side are of equal size, which can better realize mass production.

[0042] In one optimized embodiment, the spherical tank accumulator further includes a mounting bracket 600 for enabling a detachable connection between the spherical tank 100 and the steam-water separator 200. Specifically, as shown... Figure 11 As shown, the mounting bracket 600 includes a bracket body 601, a buffer pad 602, a pin 603, and a cotter pin 604. The bracket body 601 is welded to the inner wall of the spherical tank 100. A connecting hole is formed on the bracket body 601. Simultaneously, an oblong mounting hole 206 is formed on the gas-water separator 200. Preferably, the top of the side edge 205 of the structural layer 201 extends upward by a predetermined distance, and an oblong mounting hole 206 is formed thereon. The pin 603 passes through the buffer pad 602, the connecting hole, and the oblong mounting hole 206 in sequence, and cooperates with the cotter pin 604 to realize a detachable connection between the spherical tank 100 and the gas-water separator 200. The buffer pad 602 can reduce the damage to the interface between the gas-water separator 200 and the spherical tank 100 caused by vibration generated during equipment operation, realizing a flexible connection.

[0043] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A spherical tank heat accumulator, characterized in that, include: The spherical tank (100) includes a steam-water separator (200), a pipeline heat exchange system (300), and a pipeline support system (400) installed within the spherical tank (100). The pipeline heat exchange system (300) comprises multiple layers of ring pipes (302) arranged sequentially from top to bottom. Each layer of ring pipes (302) is connected to the others via axial pipes (304). The uppermost and lowermost ring pipes (302) are each connected to an air inlet pipe (301). Multiple steam nozzles are provided on the ring pipes (302). The pipeline support system (400) includes a column (401) and multiple layers of pipes along the column (401). The axial support platforms (403) are arranged sequentially from top to bottom, with each support platform (403) corresponding to a ring pipe (302). A layer of ring pipe (302) is fixedly placed on each layer of support platform (403). The gas-water separator (200) is installed on the upper part of the spherical tank (100). Two air inlet pipes (301) pass through the gas-water separator (200) and connect to the air inlet (101) at the top of the spherical tank (100). The pipeline support system (400) also includes a fixed platform (402) located above the column (401). The fixed platform (402) is a polygonal frame composed of multiple radial beams and multiple circumferential beams. The radial beams of the fixed platform (402) are flexibly connected to a fixed bracket (500) at the end furthest from the column (401), and the radial beams of the fixed platform (402) can slide radially relative to each other within the mounting ring (501) of the fixed bracket (500). The fixed bracket (500) is welded to the inner wall of the spherical tank (100). The gas-water separation device (200) includes a structural layer (201). The structural layer (201) is an inverted frustum-shaped frame structure. The bottom of the structural layer (201) is... The top and sides of the structure layer (201) are covered with flow equalization perforated plates, forming a flow equalization perforated plate layer (202); the bottom surface and sides of the structure layer (201) are covered with corrugated plates, forming a corrugated plate layer (204); the corrugated plates on each side extend along their top edge into the structure layer (201) and contact the top edge of the corresponding side flow equalization perforated plate, thus enclosing the structure layer (201) within the flow equalization perforated plate layer (202) and the corrugated plate layer (204), forming an inverted frustum-shaped gas-water separator (200); the intersection of the downward extension of each side edge (205) of the structure layer (201) coincides with the center of the sphere of the spherical tank (100).

2. The spherical tank accumulator as described in claim 1, characterized in that: Each ring tube (302) consists of multiple concentric circular tubes, which are connected to each other by radial pipes (303).

3. The spherical tank accumulator as described in claim 1, characterized in that: The pipeline heat exchange system (300) also includes a flow guiding device (305), which is disposed around the multi-layered ring pipe (302).

4. The spherical tank accumulator as described in claim 1, characterized in that: The support platform (403) is a polygonal frame composed of multiple radial beams and multiple circumferential beams; the ring pipe (302) is fixed on the support platform (403) by a sliding pipe clamp.

5. The spherical tank accumulator as described in claim 1, characterized in that: The bottom of the gas-water separator (200) is provided with an inspection port; an inspection door (203) is installed on the inspection port for covering.

6. The spherical tank accumulator as described in claim 1, characterized in that: It also includes a mounting bracket (600); the gas-water separator (200) is installed inside the spherical tank (100) via the mounting bracket (600).

7. The spherical tank accumulator as described in claim 6, characterized in that: The gas-water separator (200) has an installation oval hole (206); the mounting bracket (600) includes a bracket body (601), a buffer pad (602), a pin (603), and a cotter pin (604). The bracket body (601) has a connecting hole. The pin (603) passes through the buffer pad (602), the connecting hole, and the installation oval hole (206) in sequence, and cooperates with the cotter pin (604) to realize a detachable connection between the mounting bracket (600) and the gas-water separator (200).

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