Normal pressure heat storage tank suitable for plateau

Abstract

The application discloses a normal-pressure heat storage tank suitable for a plateau, and relates to the technical field of heat storage equipment. The heat storage tank comprises a tank body, a heat insulation plate is arranged in the tank body, and the heat insulation plate divides the internal space of the tank body into an invalid heat storage area and an effective heat storage area from top to bottom in sequence. A communication pipe for communicating the effective heat storage area and the invalid heat storage area is arranged in the tank body, and the lower end of the communication pipe extends to the bottom of the tank body. A first water distributor in communication with the communication pipe is arranged in the lower part of the effective heat storage area, a second water distributor is arranged in the upper part of the effective heat storage area, the second water distributor is in communication with a first water passing pipe arranged on the tank body, and a second water passing pipe and a first exhaust pipe in communication with the invalid heat storage area are arranged above the heat insulation plate on the tank body. The heat storage tank is a normal-pressure tank, has low cost, and can effectively reduce the influence of the altitude on the heat storage temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat storage equipment, in particular to a normal-pressure heat storage tank suitable for highlands. BACKGROUND

[0002] The heat storage tank in the related art is generally divided into a normal-pressure heat storage tank and a pressure-bearing heat storage tank.

[0003] The normal-pressure heat storage tank is in communication with the atmosphere, so that the heat storage temperature is affected by the altitude, and the heat storage temperature is low in high-altitude areas, and the practicability is poor. The pressure-bearing heat storage tank is operated under pressure, and the heat storage temperature is not affected by the altitude, but the tank is under positive pressure, so that the pressure-bearing heat storage tank is a pressure container, which needs to be inspected by a special equipment inspection research institute, and the cost of the pressure-bearing heat storage tank is high, and the installation qualification level is high, so that the investment cost is greatly increased if it is used in high-altitude areas. SUMMARY

[0004] In view of the above problems, the present application provides a normal-pressure heat storage tank suitable for highlands, which is a normal-pressure tank, has low cost, and can effectively reduce the influence of altitude on the heat storage temperature.

[0005] The technical scheme adopted by the present application to solve the technical problems is:

[0006] A normal-pressure heat storage tank suitable for highlands, comprising a tank body, a heat insulation plate is arranged in the tank body, and the heat insulation plate divides the internal space of the tank body into an invalid heat storage area and an effective heat storage area from top to bottom in sequence;

[0007] A communication pipe for communicating the effective heat storage area and the invalid heat storage area is arranged in the tank body, and the lower end of the communication pipe extends to the bottom of the tank body;

[0008] A first water distributor in communication with the communication pipe is arranged in the lower part of the effective heat storage area, a second water distributor is arranged in the upper part of the effective heat storage area, and the second water distributor is in communication with a first water pipe arranged in the tank body;

[0009] A second water pipe and a first exhaust pipe in communication with the invalid heat storage area are arranged on the tank body above the heat insulation plate.

[0010] Further, the communication pipe is fixedly arranged on the heat insulation plate and located at the geometric center of the heat insulation plate.

[0011] Furthermore, the first water distributor includes several concentrically arranged first water distribution pipes in a ring structure and multiple first connecting pipes arranged radially, and each of the first connecting pipes is connected to the first water distribution pipe. The inner end of the first connecting pipe is connected to the connecting pipe, and the first water distribution pipe and / or the first connecting pipe is provided with a first water distribution hole.

[0012] Furthermore, the first water distributor is fixedly connected to the surface of the tank via a first mounting bracket.

[0013] Furthermore, the second water distributor includes a water collecting cylinder sleeved on the connecting pipe. The side wall of the water collecting cylinder is hollow. Several second water distributing pipes with an annular structure and multiple second connecting pipes arranged radially are provided on the outside of the water distributing cylinder. Each of the second connecting pipes is connected to the second water distributing pipe. The inner end of the second connecting pipe is connected to the cavity in the side wall of the water collecting cylinder. The second water distributing pipe and / or the second connecting pipe are provided with second water distributing holes.

[0014] Furthermore, the inner end of the first water pipe is connected to the cavity inside the outer wall of the water collection cylinder.

[0015] Furthermore, the second water distributor is fixedly connected to the heat insulation plate via a second mounting bracket.

[0016] Furthermore, a connecting flange is provided at the outer end of the first water pipe.

[0017] Furthermore, the heat insulation plate is provided with a second exhaust pipe that communicates with the effective heat storage area, and the second exhaust pipe extends through the side wall of the tank to the outside of the tank.

[0018] Furthermore, the lower end of the connecting pipe abuts against the bottom surface of the tank.

[0019] The beneficial effects of this invention are:

[0020] This application provides an atmospheric pressure heat storage tank suitable for high-altitude areas. The internal space of the tank is divided into an effective heat storage zone and an ineffective heat storage zone by a heat insulation plate, and the effective and ineffective heat storage zones are connected by a connecting pipe. In this way, the upper ineffective heat storage zone can form a water seal on the lower effective heat storage zone, thereby increasing the heat storage temperature of the lower effective heat storage zone and reducing the impact of altitude on the heat storage temperature of the effective heat storage zone.

[0021] This heat storage tank not only reduces the impact of altitude on the heat storage temperature, but also operates at atmospheric pressure, thus eliminating the need for inspection by special equipment inspection institutes. It has lower installation qualification requirements, a thinner tank wall compared to traditional heat storage tanks, and lower equipment cost, effectively reducing expenses. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of an atmospheric pressure heat storage tank suitable for high-altitude areas, provided as an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the first water distributor;

[0024] Figure 3 This is a schematic diagram of the structure of the first mounting bracket;

[0025] Figure 4 A three-dimensional structural diagram of the second water distributor;

[0026] Figure 5 This is a schematic diagram of the internal structure of the second water distributor.

[0027] Figure 6 for Figure 5 A magnified structural diagram of part A in the middle.

[0028] In the diagram: 1. Tank body; 11. Ineffective heat storage zone; 12. Effective heat storage zone; 2. Insulation plate; 3. Connecting pipe; 4. First water distributor; 41. First water distribution pipe; 42. First connecting pipe; 5. Second water distributor; 51. Water collection cylinder; 511. End plate; 5111. Clearance hole; 512. Inner cylinder; 513. Outer cylinder; 52. Second water distribution pipe; 53. Second connecting pipe; 54. Second water distribution hole; 61. First water passage pipe; 611. Connecting flange; 62. Second water passage pipe; 71. First vent pipe; 72. Second vent pipe; 81. U-bolt; 82. Crossbeam; 83. Support leg. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. The described embodiments are merely a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the protection scope of this application.

[0030] Example 1

[0031] like Figure 1As shown, a high-altitude atmospheric pressure heat storage tank includes a tank body 1. A heat insulation plate 2 is installed inside the tank body 1, dividing the internal space of the tank body 1 into two parts, from top to bottom: an ineffective heat storage zone 11 and an effective heat storage zone 12. A connecting pipe 3 is provided on the heat insulation plate 2, extending downwards perpendicularly to the heat insulation plate 2. The lower end of the connecting pipe 3 extends to the bottom of the tank body 1, and the effective heat storage zone 12 is connected to the ineffective heat storage zone 11 through the connecting pipe 3.

[0032] In one specific embodiment, the heat insulation plate 2 described in this example has a first mounting hole extending vertically through the heat insulation plate 2. The upper end of the connecting pipe 3 is inserted into the first mounting hole and fixedly connected to the heat insulation plate 2 by welding. The upper end of the connecting pipe 3 is flush with the upper side surface of the heat insulation plate 2. For example, the connecting pipe 3 is located at the geometric center of the heat insulation plate 2.

[0033] A first water distributor 4 is provided at the lower part of the effective heat storage zone 12, and the first water distributor 4 is connected to the connecting pipe 3. A second water distributor 5 is provided at the upper part of the effective heat storage zone 12, and the second water distributor 5 is connected to the first water passage pipe 61 provided in the tank body 1, but the second water distributor 5 is not connected to the connecting pipe 3.

[0034] As one specific implementation method, such as Figure 2 As shown, the first water distributor 4 in this embodiment includes several concentrically arranged first water distribution pipes 41 in a ring structure and multiple first connecting pipes 42 arranged radially and uniformly, and each of the first connecting pipes 42 is connected to the first water distribution pipe 41. For example, the first water distributor 4 includes three layers of first water distribution pipes 41 and 12 first connecting pipes 42, with an included angle of 30° between two adjacent first connecting pipes 42.

[0035] The inner end of the first connecting pipe 42 is inserted into the connecting pipe 3, and the lower end of the connecting pipe 3 is provided with second mounting holes evenly distributed along the circumferential direction to accommodate the first connecting pipe 42. For example, the first connecting pipe 42 is fixedly connected to the connecting pipe 3 by welding.

[0036] Both the first water distribution pipe 41 and the first connecting pipe 42 are provided with first water distribution holes. For example, the first water distribution hole on the first water distribution pipe 41 extends through the first water distribution pipe 41 in the vertical direction, and the first water distribution hole on the first connecting pipe 42 extends through the first connecting pipe 42 in the vertical direction.

[0037] As one specific implementation method, such as Figure 4 , Figure 5 and Figure 6 As shown, the second water distributor 5 in this embodiment includes a water collection cylinder 51, which is coaxially sleeved outside the connecting pipe 3. The sidewall of the water collection cylinder 51 is hollow. For example, the water collection cylinder 51 includes two circular end plates 511. An inner cylinder 512 and an outer cylinder 513, coaxially arranged with the end plates 511, are disposed between the two end plates 511. The outer cylinder 513 is sleeved outside the inner cylinder. The upper and lower ends of the inner cylinder are fixedly connected to the end plates 511 by welding, and the upper and lower ends of the outer cylinder 513 are fixedly connected to the end plates 511 by welding. The end plates 511 are provided with clearance holes 5111 for accommodating the connecting pipe 3. Preferably, the diameter of the clearance hole 5111 is equal to the inner diameter of the inner cylinder. The inner cylinder, outer cylinder 513, and end plate 511 together form an annular cavity.

[0038] The water collection cylinder 51 is coaxially provided with several second water distribution pipes 52 in a ring structure and multiple second connecting pipes 53 arranged radially and evenly, with each second connecting pipe 53 connected to a second water distribution pipe 52. The inner end of the second connecting pipe 53 is connected to a cavity in the side wall of the water collection cylinder 51. For example, the first water distributor 4 includes three layers of second water distribution pipes 52 and 12 second connecting pipes 53, with an included angle of 30° between two adjacent second connecting pipes 53. For example, the outer cylinder 513 of the water collection cylinder 51 is evenly provided with multiple third mounting holes along the circumferential direction, each corresponding to a second connecting pipe 53. The inner end of the second connecting pipe 53 is inserted into the corresponding third mounting hole and fixedly connected to the outer cylinder 513 by welding.

[0039] The second water distribution pipe 52 and the second connecting pipe 53 are both provided with second water distribution holes 54. For example, the second water distribution holes 54 are all located at the lower part of the second water distribution pipe 52 and the second connecting pipe 53.

[0040] The first water pipe 61 is arranged radially, with its outer end extending through the tank body 1 to the outside of the tank body 1, and is sealed to the tank body 1. Exemplarily, the first water pipe 61 is fixedly connected to the tank body 1 by welding. The inner end of the first water pipe 61 communicates with a cavity inside the outer wall of the water collection cylinder 51. Exemplarily, a fourth mounting hole is provided on the outer cylinder 513 of the water collection cylinder 51, and the inner end of the first water pipe 61 is inserted into the fourth mounting hole and fixedly connected to the outer cylinder 513 by welding.

[0041] For example, the outer end of the first water pipe 61 is provided with a connecting flange 611.

[0042] like Figure 1 As shown, a second water pipe 62, connected to the ineffective heat storage zone 11, is provided on the tank body 1 above the heat insulation plate 2. A first vent pipe 71, connected to the ineffective heat storage zone 11, is provided on the top of the tank body 1.

[0043] The working process of an atmospheric pressure heat storage tank suitable for high-altitude areas, as provided in this application embodiment, is as follows:

[0044] During heat storage, the hot water, heated by the heating element, is pumped by the circulating pump through the first water pipe 61 into the second water distributor 5 located above the effective heat storage zone 12. From there, it slowly and evenly enters the effective heat storage zone 12 of the heat storage tank. Due to the lower density of hot water and the higher density of cold water, the hot water is located in the upper layer of the effective heat storage zone 12, while the cold water is located in the lower layer. As the amount of hot water in the effective heat storage zone 12 increases, the cold water in the lower layer enters the ineffective heat storage zone 11 through the first water distributor 4 and the connecting pipe 3, and finally re-enters the heating element through the second water pipe 62 to complete one heat storage cycle.

[0045] During heat release, the cold water, after heat exchange with the heat exchanger, is pumped by the circulating pump through the second water pipe 62 into the second water distributor 5 located at the lower part of the effective heat storage zone 12, and then slowly and evenly enters the effective heat storage zone 12 of the heat storage tank through the first water distributor 4. As the amount of cold water in the effective heat storage zone 12 increases, the hot water located at the top will flow out through the second water distributor 5 from the first water pipe 61, and finally re-enter the heat exchanger to complete one heat release cycle.

[0046] The ineffective heat storage zone 11 at the top of the heat storage tank forms a water seal with the effective heat storage zone 12 located below the insulation plate 2. Utilizing the principle of hydrostatic pressure, the effective heat storage zone 12 maintains a pressure of one atmosphere even at high altitudes. Under the action of hydrostatic pressure, the heat storage temperature of the effective heat storage zone 12 in the heat storage tank increases. Tests have shown that the heat storage temperature of the effective heat storage zone 12 located below the heat storage tank can reach over 95℃. Furthermore, the higher the water seal height (i.e., the liquid level height within the ineffective heat storage zone 11), the higher the heat storage temperature achievable by the effective heat storage zone 12, with a maximum temperature reaching 99℃.

[0047] Furthermore, such as Figure 1 As shown, the heat insulation plate 2 is provided with a second exhaust pipe 72 that communicates with the effective heat storage zone 12. The second exhaust pipe 72 extends through the top side wall of the tank 1 to the outside of the tank 1, and the second exhaust pipe 72 is sealed to the tank 1. In one specific embodiment, the second exhaust pipe 72 is fixedly connected to the tank 1 by welding. By providing the second exhaust pipe 72, the gas below the heat insulation plate 2 can be discharged outside the heat storage tank, preventing the formation of gas cavities within the effective heat storage zone 12 of the heat storage tank, thus avoiding corrosion problems.

[0048] Furthermore, the lower end of the connecting pipe 3 abuts against the bottom surface of the tank 1, so that during the heat release and heat storage process, the water in the effective heat storage zone 12 can only enter and exit the connecting pipe 3 through the water distribution hole of the first water distributor 4. This helps to ensure the stability of the interface between cold water and hot water and avoids disturbance to the cross section between cold water and hot water.

[0049] Furthermore, such as Figure 3 As shown, the first water distributor 4 is fixedly connected to the surface of the tank 1 via a first mounting bracket. In one specific embodiment, multiple first mounting brackets are axially arranged on the first connecting pipe 42 of the first water distributor 4.

[0050] The first mounting bracket includes a support frame and a U-bolt 81 disposed on the support frame. The first connecting pipe 42 is clamped and fixed between the U-bolt 81 and the support frame.

[0051] In one specific embodiment, the support frame described in this example includes a crossbeam 82, with legs 83 at both ends of the crossbeam 82 for supporting it. The lower ends of the legs 83 are fixedly connected to the bottom surface of the tank 1 by welding, and the upper ends of the legs 83 are fixedly connected to the crossbeam 82 by welding. The open end of the U-bolt 81 is fixedly connected to the crossbeam 82. For example, the legs 83 are inclined, the two legs 83 are symmetrical, and the distance between the two legs 83 gradually increases in the direction away from the crossbeam 82.

[0052] Furthermore, the second water distributor 5 is fixedly connected to the heat insulation plate 2 via a second mounting bracket (not shown in the figure). In one specific embodiment, multiple second mounting brackets are axially arranged on the second connecting pipe 53 of the second water distributor 5.

[0053] The structure of the second mounting bracket is the same as that of the first mounting bracket, and the structure of the second mounting bracket will not be described in detail here.

[0054] Example 2

[0055] The first water distributor 4 has a plurality of first water distribution holes evenly distributed on its first water distribution pipe 41 or first connecting pipe 42. Second water distribution holes 54 located on the second water distribution pipe 52 penetrate the second water distribution pipe 52 in a vertical direction, and second water distribution holes 54 located on the second connecting pipe 53 penetrate the second connecting pipe 53 in a vertical direction. The remaining structure is the same as in Embodiment 1.

[0056] Example 3

[0057] The inner end of the first water pipe 61 is connected to the second water distribution pipe 52 located on the outermost layer, and the rest of the structure is the same as in Embodiment 1.

[0058] Other embodiments obtained by those skilled in the art based on the embodiments provided in this application by combining, splitting, or reorganizing the embodiments of this application do not exceed the protection scope of this application.

[0059] The above detailed embodiments have provided a detailed explanation of the purpose, technical solutions, and beneficial effects of the embodiments of this application. The above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. That is, any modifications, equivalent substitutions, improvements, etc., made on the basis of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. An atmospheric pressure heat storage tank suitable for high-altitude areas, comprising a tank body (1), characterized in that: The tank (1) is provided with a heat insulation plate (2), and the heat insulation plate (2) divides the internal space of the tank (1) from top to bottom into an ineffective heat storage area (11) and an effective heat storage area (12). The tank (1) is provided with a connecting pipe (3) for connecting the effective heat storage area (12) and the ineffective heat storage area (11), and the lower end of the connecting pipe (3) extends to the bottom of the tank (1); The lower part of the effective heat storage zone (12) is provided with a first water distributor (4) connected to the connecting pipe (3), and the upper part of the effective heat storage zone (12) is provided with a second water distributor (5), and the second water distributor (5) is connected to the first water pipe (61) provided in the tank body (1). The tank (1) is provided with a second water pipe (62) and a first exhaust pipe (71) above the heat insulation plate (2), which are connected to the ineffective heat storage zone (11). The second water distributor (5) is not connected to the connecting pipe (3).

2. The atmospheric pressure heat storage tank suitable for high-altitude areas according to claim 1, characterized in that: The connecting pipe (3) is fixedly installed on the heat insulation plate (2) and located at the geometric center of the heat insulation plate (2).

3. The atmospheric pressure heat storage tank suitable for high-altitude areas according to claim 1, characterized in that: The first water distributor (4) includes several concentrically arranged first water distribution pipes (41) in a ring structure and multiple first connecting pipes (42) arranged radially. Each of the first connecting pipes (42) is connected to the first water distribution pipe (41). The inner end of the first connecting pipe (42) is connected to the connecting pipe (3). The first water distribution pipe (41) and / or the first connecting pipe (42) are provided with first water distribution holes.

4. A high-altitude atmospheric pressure heat storage tank according to claim 3, characterized in that: The first water distributor (4) is fixedly connected to the surface of the tank (1) via a first mounting bracket.

5. A high-altitude atmospheric pressure heat storage tank according to claim 1, characterized in that: The second water distributor (5) includes a water collection cylinder (51) sleeved on the connecting pipe (3). The side wall of the water collection cylinder (51) is hollow. The outside of the water collection cylinder (51) is provided with several second water distribution pipes (52) in a ring structure and multiple second connecting pipes (53) arranged radially. Each of the second connecting pipes (53) is connected to the second water distribution pipe (52). The inner end of the second connecting pipe (53) is connected to the cavity in the side wall of the water collection cylinder (51). The second water distribution pipe (52) and / or the second connecting pipe (53) are provided with second water distribution holes (54).

6. A high-altitude atmospheric pressure heat storage tank according to claim 5, characterized in that: The inner end of the first water pipe (61) is connected to the cavity inside the outer wall of the water collection cylinder (51).

7. A high-altitude atmospheric pressure heat storage tank according to claim 5, characterized in that: The second water distributor (5) is fixedly connected to the heat insulation plate (2) via the second mounting bracket.

8. A high-altitude atmospheric pressure heat storage tank according to claim 1, characterized in that: The outer end of the first water pipe (61) is provided with a connecting flange (611).

9. A high-altitude atmospheric pressure heat storage tank according to claim 1, characterized in that: The heat insulation plate (2) is provided with a second exhaust pipe (72) that is connected to the effective heat storage area (12), and the second exhaust pipe (72) extends through the side wall of the tank (1) to the outside of the tank (1).

10. A high-altitude atmospheric pressure heat storage tank according to claim 1, characterized in that: The lower end of the connecting pipe (3) abuts against the bottom surface of the tank (1).

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