Steel lining plastic storage tank convenient for temperature control and temperature control method thereof

Abstract

The invention discloses a steel lining plastic storage tank convenient for temperature control and a temperature control method thereof, and belongs to the technical field of storage tanks, the storage tank comprises a first tank body and a second tank body, the second tank body is connected with a shell, a working cavity is formed between the second tank body and the shell, the shell is provided with a first inlet pipe and a first outlet pipe, the first outlet pipe is connected with a three-way pipe, and the three-way pipe is connected with a second inlet pipe. The three-way pipe comprises a first branch pipe and a second branch pipe, and the first branch pipe is connected with an unpowered hood. Heat preservation can be conducted on the interior of the storage tank through the working cavity, and heat dissipation can be conducted on the interior of the storage tank through air under the condition that no external power exists through the unpowered air cap; the path of the medium in the working cavity is controlled through the on-off of the through holes, so that the time of passing through each layer is controlled, the heat dissipation and heating effects are controlled, and different heat dissipation and heating requirements are met; the whole storage tank is suitable for being used in an outdoor environment where a power supply cannot be provided externally; temperature control comprises multiple modes, and multiple use scenes can be met on the basis that the structure of the storage tank is not changed.

Description

Technical Field

[0001] The invention belongs to the technical field of storage tanks, and in particular relates to a steel-lined plastic storage tank which is easy to control temperature and a temperature control method thereof. Background Art

[0002] Steel-lined plastic storage tanks generally use the rotational molding process to weld the steel mesh to the inner surface of the steel tank. Polyethylene, polypropylene and other polymer materials are used as raw materials. The steel plate, steel mesh and polyethylene are combined into one by the rotational molding process. The overall rotational lining plastic layer is formed in one step. It is seamless, durable, hygienic and clean, resistant to various acids and alkalis, corrosion-resistant, non-leakage, wear-resistant, high strength, low cost and other advantages. It is an ideal container for storing corrosive liquids and is widely used in chemical, environmental protection, food and other industries. In order to keep warm, storage tanks usually use double-layer tanks or set an insulation layer outside the tank. However, when storing certain corrosive media, storage tanks sometimes need to prevent the temperature from rising by heat dissipation, and the heat dissipation effect of tanks with insulation layers is poor. Summary of the invention

[0003] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a steel-lined plastic storage tank which is easy to control temperature and a temperature control method thereof to facilitate heat preservation and heat dissipation of the storage tank.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A steel-lined plastic storage tank that is easy to control temperature includes a first tank body and a second tank body mounted outside the first tank body, the second tank body is connected to a shell, a working chamber is formed between the second tank body and the shell, the shell is provided with a first inlet pipe and a first outlet pipe connected to the working chamber, the first outlet pipe is connected to a three-way pipe, the three-way pipe includes a first branch pipe and a second branch pipe, and the first branch pipe is connected to a non-powered wind hood.

[0006] Preferably, a first on-off valve is provided between the unpowered hood and the first branch pipe.

[0007] Preferably, a plurality of partition plates arranged in the up-and-down directions are provided in the working chamber, and through holes are provided on the partition plates.

[0008] Preferably, the through hole includes a first through hole and a second through hole, and the first through hole and the second through hole are respectively arranged on two sides of the second tank body.

[0009] Preferably, the partition plate is provided with a first switch valve for controlling the on-off of the first through hole and a second switch valve for controlling the on-off of the second through hole.

[0010] Preferably, the first switch valve and the second switch valve are both manual valves, and the first handles of the first switch valve and the second switch valve are both located outside the shell.

[0011] Preferably, the distance from the first through hole to the first outlet pipe is smaller than the distance from the second through hole to the first outlet pipe.

[0012] Preferably, the distance from the first through hole to the first inlet pipe is smaller than the distance from the second through hole to the first inlet pipe, and the first inlet pipe and the first outlet pipe are located on the same side of the shell.

[0013] Preferably, the housing is in the shape of a rectangle.

[0014] The present invention also provides a temperature control method for a steel-lined plastic storage tank, using the above-mentioned steel-lined plastic storage tank that is easy to control temperature, including a heat dissipation mode, a heat preservation mode and a heating mode;

[0015] In the heat dissipation mode, the first inlet pipe is opened, the second branch pipe is closed, the first on-off valve is opened, and under the action of the non-powered hood, external air enters the working chamber from the first inlet pipe, and among the plurality of first on-off valves and second on-off valves, more than one first on-off valve is closed, and more than one second on-off valve is opened, and the external air passes through the working chamber and is discharged from the non-powered hood;

[0016] In the insulation mode, the first inlet pipe is closed, the second branch pipe is closed, the first on-off valve is closed, and the plurality of first switch valves and second switch valves are all closed;

[0017] In the heating mode, the first inlet pipe is opened, the second branch pipe is opened, the first on-off valve is closed, the heating medium enters the working chamber from the first inlet pipe, and among the multiple first switch valves and second switch valves, more than one first switch valve is closed, and more than one second switch valve is opened, and the heating medium is discharged from the second branch pipe after passing through the working chamber.

[0018] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0019] 1. A shell is provided to form a working chamber, and a non-powered hood is provided to communicate with the working chamber. The working chamber can be used to keep the inside of the storage tank warm, and the non-powered hood can also use air to dissipate heat in the storage tank without external power;

[0020] 2. External heating medium can also be introduced into the working chamber, and the storage tank can be heated by external medium without changing the structure of the storage tank;

[0021] 3. A partition plate is arranged in the working chamber to divide the working chamber into multiple layers. A first through hole and a second through hole are arranged on the partition plate. The two through holes are arranged on both sides, and a switch valve is used to control the opening and closing of the through holes. The path of the medium in the working chamber is controlled by the opening and closing of the through holes, thereby controlling the time of passing through each layer, thereby controlling the heat dissipation and heating effects, and adapting to different heat dissipation and heating requirements;

[0022] 4. The unpowered hood can use air to dissipate heat from the tank without external power supply. The switch valve adopts a manual valve to control the opening and closing of the corresponding through hole without external power supply. The tank as a whole is suitable for outdoor use in an environment where no external power supply is available.

[0023] 5. The temperature control includes multiple modes, which can meet various usage scenarios without changing the tank structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the unpowered hood of the embodiment;

[0026] Figure 3 is a schematic diagram of the cross-sectional structure of the partition plate of the embodiment;

[0027] Figure 4 is another longitudinal cross-sectional structural schematic diagram of the embodiment;

[0028] Figure 5 It is a diagram of the medium flow in the working chamber under the working state of the embodiment. DETAILED DESCRIPTION

[0029] The present invention is further illustrated below in conjunction with specific examples. The examples are implemented based on the technical solutions of the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0030] like Figure 1 and Figure 4As shown, a steel-lined plastic storage tank includes a first tank body 1 and a second tank body 2. The first tank body 1 and the second tank body 2 are cylindrical as a whole. The second tank body 2 is sleeved outside the first tank body 1. The first tank body 1 is a tank body made of polyethylene material, and the second tank body 2 is a tank body made of steel material. A steel mesh is welded on the inner surface of the second tank body 2. The first tank body 1 is connected to the second tank body 2 by a rotational molding process. The two tank bodies form a steel-lined plastic storage tank. A feed port 12 is provided on the top of the first tank body 1 and the second tank body 2. The stored medium enters the first tank body 1 through the feed port 12. A discharge port (not shown in the figure) is also provided at the bottom of the first tank body 1 and the second tank body 2. The bottom of the second tank body 2 is connected to a base 22 through a plurality of supporting legs 21. The base 22 forms a stable support for the first tank body 1 and the second tank body 2.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the second tank body 2 is connected to a shell 3, which is a rectangular body. The shell 3 wraps most of the second tank body 2 from the outside, and the bottom of the shell 3 is also connected to the base 22. A working chamber 4 is formed between the second tank body 2 and the shell 3. A first inlet pipe 41 and a first outlet pipe 42 are provided on the shell 3. The first inlet pipe 41 and the first outlet pipe 42 are both arranged on the same side of the shell 3. The first inlet pipe 41 is arranged at the bottom of the side of the shell 3, and the first outlet pipe 42 is arranged at the upper part of the side of the shell 3. The first inlet pipe 41 and the first outlet pipe 42 are both connected to the working chamber 4. The first outlet pipe 42 is connected to a three-way pipe 5, and the three-way pipe 5 includes a first branch pipe 51 and a second branch pipe 52. And the main pipe, the main pipe of the three-way pipe 5 is connected to the first outlet pipe 42, the first branch pipe 51 is arranged upward, and the first branch pipe 51 is connected to the unpowered wind hood 6, the unpowered wind hood 6 adopts the stainless steel unpowered wind hood produced by Shandong Xingchengda Metal Materials Co., Ltd. The unpowered wind hood uses the air flow channel caused by natural wind force and the temperature difference between the inside and the outside to drive the arc-shaped fan blades to rotate, thereby using the centrifugal force and the negative pressure effect to discharge the internal hot air. When the unpowered wind hood 6 is working, the second branch pipe 52 is sealed with a sealing plate, and the arc-shaped fan blades of the unpowered wind hood 6 rotate to generate negative pressure at the first outlet pipe 42, thereby sucking out the air in the working chamber 4, and the external air enters the working chamber 4 from the first inlet pipe 41. The unpowered wind hood 6 is connected to the first branch pipe 51 through a first on-off valve 61. In this embodiment, the first on-off valve 61 is a manual butterfly valve. The first on-off valve 61 can be switched on and off by rotating the handle of the manual butterfly valve. When the first on-off valve 61 is opened, the unpowered wind hood 6 generates negative pressure at the first outlet pipe 42. When the first on-off valve 61 is closed, the unpowered wind hood 6 is disconnected from the first outlet pipe 42 so that negative pressure cannot be generated at the first outlet pipe 42.

[0032] like Figure 1 , Figure 3 and Figure 4As shown, a plurality of partition plates 7 arranged in the vertical direction are provided in the working chamber 4. In this embodiment, three partition plates 7 are provided. The three partition plates 7 are arranged at equal distances from top to bottom, and the working chamber 4 is divided into a first layer space, a second layer space, a third layer space and a fourth layer space from bottom to top. Through holes are provided on the partition plates 7, and the through holes include a first through hole 71 and a second through hole 72. In this embodiment, the first through hole 71 and the second through hole 72 are both circular holes. The first through hole 71 and the second through hole 72 are respectively arranged on both sides of the second tank body 2 and are symmetrically arranged. Since the shell 3 is a rectangular body, the cross-section of the second tank body 2 is circular, and the partition plate 7 is rectangular as a whole and has a through hole 71 on the upper part that is connected to the second tank body 2. The circular holes corresponding to the body 2 are thus sleeved outside the second tank body 2, the first through hole 71 and the second through hole 72 are respectively arranged at two symmetrical corners of the partition plate 7, the first through holes 71 of the three partition plates 7 are on the same straight line perpendicular to the horizontal plane, and the second through holes 72 of the three partition plates 7 are on another straight line perpendicular to the horizontal plane, the first inlet pipe 41 and the first outlet pipe 42 are arranged on one side of the shell 3 close to the first through hole 71, the distance from the first through hole 71 to the first inlet pipe 41 is smaller than the distance from the second through hole 72 to the first inlet pipe 41, and the distance from the first through hole 71 to the first outlet pipe 42 is smaller than the distance from the second through hole 72 to the first outlet pipe 42. A first switch valve 73 and a second switch valve 74 are provided on the partition plate 7. The first switch valve 73 is arranged on the first through hole 71 to control the on and off of the first through hole 71. The second switch valve 74 is arranged on the second through hole 72 to control the on and off of the second through hole 72. In this embodiment, the first switch valve 73 and the second switch valve 74 are both manual butterfly valves. The first handles 701 of the first switch valve 73 and the second switch valve 74 are both located outside the shell 3. By rotating the corresponding first handles 701, the switch of the first switch valve 73 and the second switch valve 74 can be controlled, thereby controlling the on and off of the first through hole 71 and the second through hole 72.The plurality of partition plates 7 divide the working chamber 4 into multiple layers. When the medium entering through the first inlet pipe 41 needs to quickly pass through the first layer space at the bottom, the first through hole 71 of the partition plate 7 above the first layer is opened and the second through hole 72 is closed, so that the medium entering quickly enters the upper layer space through the first through hole 71. If the medium entering through the first inlet pipe 41 needs to flow through the first layer space and then enter the upper layer space (i.e., the second layer space), the first through hole 71 of the partition plate 7 above the first layer is closed and the second through hole 72 is opened, so that the medium entering enters the upper layer space (i.e., the second layer space) through the second through hole 72. The opening and closing of the first through hole 71 and the second through hole 72 are controlled by the first switch valve 73 and the second switch valve 74. The two switch valves can control the flow of medium in the working chamber 4. The direction of the medium, when the medium reaches the second layer of space, if it needs to pass quickly, the corresponding through hole above the entry through hole will be opened. For example, if the medium enters the second layer of space through the first through hole 71 below, the corresponding first through hole 71 above will be opened. If the medium enters the second layer of space through the second through hole 72 below, the corresponding second through hole 72 above will be opened. When the medium needs to pass through the entire space of this layer, the corresponding through hole above the entry through hole will be closed and the other through hole will be opened. For example, if the medium enters the second layer of space through the first through hole 71 below, the corresponding first through hole 71 above will be closed and the second through hole 72 will be opened. If the medium enters the second layer of space through the second through hole 72 below, the corresponding second through hole 72 above will be closed and the first through hole 71 will be opened.

[0033] This embodiment also provides a temperature control method for a steel-lined plastic storage tank, including a heat dissipation mode, a heat preservation mode and a heating mode;

[0034] In the heat dissipation mode, the first inlet pipe 41 is opened, the second branch pipe 52 is closed, and the first on-off valve 61 is opened. Under the action of the unpowered wind hood 6, external air enters the working chamber 4 from the first inlet pipe 41. Among the multiple first switch valves 73 and the second switch valves 74, more than one first switch valve 73 is closed, and more than one second switch valve 74 is opened. The external air passes through the working chamber 4 and is discharged from the unpowered wind hood 6; in this embodiment, only the middle first switch valve 73 among the three first switch valves 73 is closed, and the bottom and top second switch valves 74 of the three second switch valves 74 are opened, so that the external air flows through each layer and exchanges heat with the second tank body 2 in the working chamber 4, thereby dissipating the heat of the storage medium in the first tank body 1.

[0035] In the insulation mode, the first inlet pipe 41 is closed, the second branch pipe 52 is closed, the first on-off valve 61 is closed, and the multiple first switch valves 73 and second switch valves 74 are all closed; since all channels are closed, the still air in the working chamber 4 and the shell 3 form an insulation layer.

[0036] In the heating mode, the first inlet pipe 41 is opened, the second branch pipe 52 is opened, the first on-off valve 61 is closed, the heating medium enters the working chamber 4 from the first inlet pipe 41, and among the plurality of first switch valves 73 and second switch valves 74, more than one first switch valve 73 is closed, and more than one second switch valve 74 is opened, and the heating medium is discharged from the second branch pipe 52 after passing through the working chamber 4. In this embodiment, the heating medium is steam, the first inlet pipe 41 is connected to an external steam source, and the steam enters the working chamber 4 from the first inlet pipe 41. Among the three first switch valves 73, only the top first switch valve 73 is closed, and among the three second switch valves 74, only the top second switch valve 74 is opened, so that the steam quickly flows upward from the two first switch valves 73, passes through the top two layers of space, and then is discharged from the working chamber 4 from the first outlet pipe 42, and finally is discharged from the second branch pipe 52. Figure 5 As shown (the black arrow in the figure shows the direction of steam), the steam has a long flow path in the upper half of the working chamber 4 and has a good heat exchange effect with the second tank body 2. In this way, the steam has a good heating effect on the storage medium in the upper half of the first tank body 1, and has a poor heating effect on the storage medium in the lower half of the first tank body 1. By controlling the on and off of different first switch valves 73 and second switch valves 74, different heating paths can be controlled, thereby achieving different heating effects to meet different heating needs.

[0037] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A steel-lined plastic storage tank that is easy to control temperature, characterized in that: The invention comprises a first tank body (1) and a second tank body (2) sleeved outside the first tank body (1); the second tank body (2) is connected to a shell (3); a working chamber (4) is formed between the second tank body (2) and the shell (3); the shell (3) is provided with a first inlet pipe (41) and a first outlet pipe (42) which are in communication with the working chamber (4); the first outlet pipe (42) is connected to a three-way pipe (5); the three-way pipe (5) comprises a first branch pipe (51) and a second branch pipe (52); the first branch pipe (51) is connected to a non-powered hood (6).

2. The temperature-controlled steel-lined plastic storage tank according to claim 1, characterized in that: A first on-off valve (61) is provided between the unpowered hood (6) and the first branch pipe (51).

3. The temperature-controlled steel-lined plastic storage tank according to claim 1, characterized in that: A plurality of partition plates (7) arranged in an up-and-down direction are provided in the working chamber (4), and through holes are provided on the partition plates (7).

4. The temperature-controlled steel-lined plastic storage tank according to claim 3 is characterized in that: The through hole comprises a first through hole (71) and a second through hole (72), and the first through hole (71) and the second through hole (72) are respectively arranged on two sides of the second tank body (2).

5. The temperature-controlled steel-lined plastic storage tank according to claim 4 is characterized in that: The partition plate (7) is provided with a first switch valve (73) for controlling the opening and closing of the first through hole (71) and a second switch valve (74) for controlling the opening and closing of the second through hole (72).

6. The temperature-controlled steel-lined plastic storage tank according to claim 5, characterized in that: The first switch valve (73) and the second switch valve (74) are both manual valves, and the first handles of the first switch valve (73) and the second switch valve (74) are both located outside the housing (3).

7. The temperature-controlled steel-lined plastic storage tank according to claim 4, characterized in that: The distance from the first through hole (71) to the first outlet pipe (42) is smaller than the distance from the second through hole (72) to the first outlet pipe (42).

8. The temperature-controlled steel-lined plastic storage tank according to claim 1, characterized in that: The distance between the first through hole (71) and the first inlet pipe (41) is smaller than the distance between the second through hole (72) and the first inlet pipe (41), and the first inlet pipe (41) and the first outlet pipe (42) are located on the same side of the housing (3).

9. The temperature-controlled steel-lined plastic storage tank according to claim 1, characterized in that: The housing (3) is in the form of a rectangular body.

10. A temperature control method for a steel-lined plastic storage tank, using the temperature-controllable steel-lined plastic storage tank as claimed in any one of claims 1 to 9, characterized in that: Including heat dissipation mode, heat preservation mode and heating mode; In the heat dissipation mode, the first inlet pipe (41) is opened, the second branch pipe (52) is closed, the first on-off valve (61) is opened, and under the action of the non-powered hood (6), external air enters the working chamber (4) from the first inlet pipe (41), and among the plurality of first on-off valves (73) and second on-off valves (74), more than one first on-off valve (73) is closed, and more than one second on-off valve (74) is opened, and the external air passes through the working chamber (4) and is discharged from the non-powered hood (6); In the heat preservation mode, the first inlet pipe (41) is closed, the second branch pipe (52) is closed, the first on-off valve (61) is closed, and the plurality of first switch valves (73) and second switch valves (74) are all closed; In the heating mode, the first inlet pipe (41) is opened, the second branch pipe (52) is opened, the first on-off valve (61) is closed, the heating medium enters the working chamber (4) from the first inlet pipe (41), and among the plurality of first on-off valves (73) and second on-off valves (74), more than one first on-off valve (73) is closed, more than one second on-off valve (74) is opened, and the heating medium passes through the working chamber (4) and is discharged from the second branch pipe (52).

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