Cold storage tank

Abstract

The utility model provides a cold storage tank which comprises a tank body, an isolation cavity, a heat preservation layer, an air outlet pipe network, an air inlet pipe network, a vacuumizing pump, a cold air making unit, a first valve, a second valve, an exhaust pipe and a third valve. The air conditioning unit and the vacuumizing pump are arranged, the vacuumizing pump enables the isolation cavity to be in a vacuum state, and therefore the degree of heat exchange between cold water and the external environment in a short-term and long-term mode is reduced; the air-conditioning unit enables the isolation chamber to be kept in a low-temperature state; therefore, the degree of heat exchange between cold water and the external environment for a long time is reduced; therefore, the heat preservation capacity of the tank body is improved, and the cooling effect of cold water in the tank body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cold storage tanks, and particularly relates to a cold storage tank. Background Art

[0002] In order to keep the indoor temperature in line with people's comfort requirements, nowadays, various public places such as cinemas, offices, office buildings, commercial plazas, etc. all use air-conditioning equipment to adjust the indoor temperature. And nowadays, basically all air-conditioning equipment operates during the day and stops at night. At this time, some people think of taking advantage of the peak-valley electricity price difference of the power grid, using a chiller to store cold in a water tank at night, and releasing the cold water from the water tank during the day while the main unit operates to avoid peak electricity consumption, so as to achieve the purpose of air-conditioning energy conservation. At this time, a corresponding water cold storage device is needed.

[0003] The water cold storage device uses water to store cold. When refrigeration is needed, the cold water in the water cold storage device is used for refrigeration, so that the working time of the refrigeration unit can be adjusted flexibly. The peak-valley electricity price difference of the power grid can be utilized. When the electricity price is low at night, the refrigeration unit stores cold in the water cold storage device, and when the electricity price is high during the day, the water cold storage device releases cold, so that the refrigeration unit operates to avoid peak electricity consumption. It has a significant effect on shifting the peak and filling the valley of the power grid load. It has the advantages of high economic benefits, small investment, reliable operation, etc., and is widely used in the air-conditioning systems of various buildings.

[0004] When the weather temperature is relatively low, since the demand for cold water decreases, the water cold storage device may not be used again for several days. During this period, since the existing water cold storage device generally uses the form of direct wrapping with thermal insulation cotton, the heat preservation ability is limited, thus reducing the cooling effect of the cold water in the water cold storage device. Content of the Utility Model

[0005] The purpose of the utility model is to design a cold storage tank to solve the problems raised in the background art. To achieve the above purpose, the utility model provides the following technical solutions: including an isolation chamber fixedly connected to the outer wall of the tank body, a thermal insulation layer fixedly connected to the outer wall of the isolation chamber, an air outlet pipe network and an air inlet pipe network communicated with the isolation chamber, a vacuum pump communicated with the air outlet pipe network and a refrigeration unit communicated with the air inlet pipe network; a first valve is installed at one end of the air outlet pipe network close to the vacuum pump, a second valve is installed at one end of the air inlet pipe network close to the refrigeration unit, an exhaust pipe is communicated with the air outlet pipe network between the first valve and the isolation chamber, and a third valve is arranged on the exhaust pipe.

[0006] Further, temperature sensors are installed at the pipe orifice of the exhaust pipe and inside the isolation chamber.

[0007] Further, a pressure gauge is communicated with the air outlet pipe network.

[0008] Furthermore, the outlet pipe network includes a plurality of outlet units that communicate with the isolation chamber and penetrate through the thermal insulation layer, a first connecting pipe that connects the plurality of outlet units, and a second connecting pipe that connects the first connecting pipe. The second connecting pipe communicates with the vacuum pump, and both the first valve and the exhaust pipe are installed on the second connecting pipe.

[0009] Furthermore, the inlet pipe network includes a plurality of inlet units that communicate with the isolation chamber and penetrate through the thermal insulation layer, a third connecting pipe that connects the plurality of inlet units, and a fourth connecting pipe that connects the third connecting pipe. The fourth connecting pipe communicates with the refrigeration unit, and the second valve is installed on the fourth connecting pipe.

[0010] Furthermore, a plurality of the outlet units and a plurality of the inlet units are circumferentially distributed on the outer wall of the isolation chamber, and the outlet units and the inlet units are alternately distributed.

[0011] Furthermore, the outlet unit and the inlet unit have the same structure. The outlet unit includes a plurality of horizontal pipes that communicate with the isolation chamber and penetrate through the thermal insulation layer, and a vertical pipe for connecting the plurality of horizontal pipes. The first connecting pipe and the third connecting pipe respectively communicate with the alternately distributed vertical pipes.

[0012] Furthermore, the thermal insulation layer is composed of a rubber layer, a polyurethane foam board, a polyethylene polypropylene polymer layer, and a stainless steel coil from the inside to the outside.

[0013] Furthermore, a plurality of stainless steel straps are wound around the outer wall of the stainless steel coil.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model is provided with a refrigeration unit and a vacuum pump. The vacuum pump makes the isolation chamber in a vacuum state, thereby reducing the degree of heat exchange between the cold water and the external environment in the short and long term; and the refrigeration unit keeps the isolation chamber in a state of relatively low temperature; thereby reducing the degree of heat exchange between the cold water and the external environment in the long term; therefore, the present utility model improves the heat preservation ability of the tank body, thereby ensuring the cooling effect of the cold water in the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0018] Wherein: 1. Thermal insulation layer; 2. Intake unit; 3. Third connecting pipe; 4. Fourth connecting pipe; 5. Intake pipe network; 6. Exhaust pipe; 7. Vacuum pump; 8. First valve; 9. Third valve; 10. Refrigerating unit; 11. Second valve; 12. Second connecting pipe; 13. First connecting pipe; 14. Vertical pipe; 15. Horizontal pipe; 16. Outlet pipe network; 17. Stainless steel tie; 18. Stainless steel coil; 19. Outlet unit; 20. Tank body; 21. Isolation chamber. Detailed implementation manner

[0019] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific implementation manner, structure, features and their effects of the present utility model as follows.

[0020] Embodiment: Please refer to Figure 1 , a cold storage tank, including an isolation chamber 21 fixedly connected to the outer wall of the tank body 20, a thermal insulation layer 1 fixedly connected to the outer wall of the isolation chamber 21, an outlet pipe network 16 and an intake pipe network 5 communicated with the isolation chamber 21, a vacuum pump 7 communicated with the outlet pipe network 16 and a refrigerating unit 10 communicated with the intake pipe network 5; a first valve 8 is installed at one end of the outlet pipe network 16 close to the vacuum pump 7, a second valve 11 is installed at one end of the intake pipe network 5 close to the refrigerating unit 10, an exhaust pipe 6 is communicated with the outlet pipe network 16 between the first valve 8 and the isolation chamber 21, and a third valve 9 is provided on the exhaust pipe 6. Among them, the refrigerating unit 10 adopts a conventional cold air supply system, and no further elaboration will be made here; when it is necessary to store the cold water temperature in the tank body 20 for a short or long term, only the third valve 9 and the second valve 11 need to be closed, and then the vacuum pump 7 is started to evacuate the isolation chamber 21, thereby effectively isolating the heat exchange between the inside of the tank body 20 and the external environment, and further greatly reducing the increase in the cold water temperature in the tank body 20, thus ensuring the cooling effect of the cold water in the cold storage tank; when it is necessary to store for a long term, only the first valve 8 needs to be closed, then the third valve 9 and the second valve 11 are opened, and then the refrigerating unit 10 is started to inject cold air into the isolation chamber 21. Among them, the temperature of the cold air is not higher than the temperature of the cold water, thereby effectively preventing the heat exchange between the cold water and the outside; ensuring the cooling effect of the cold water; therefore, the present utility model improves the heat preservation ability of the tank body 20, thereby ensuring the cooling effect of the cold water in the tank body 20.

[0021] In this embodiment, temperature sensors are installed at the pipe orifice of the exhaust pipe 6 and inside the isolation chamber 21. When the refrigerating gas unit 10 is started, the cold gas will enter the isolation chamber 21, thereby reducing the temperature of the air inside the isolation chamber 21 and discharging the internal gas from the exhaust pipe 6 at the same time. When the temperature of the discharged gas reaches the set value of the temperature sensor at the pipe orifice of the exhaust pipe 6, the third valve 9 and the second valve 11 are closed, and the refrigerating gas unit 10 stops. When the temperature of the internal gas in the isolation chamber 21 is higher than the set value of the temperature sensor installed inside the isolation chamber 21, the third valve 9 and the second valve 11 are opened, and the refrigerating gas unit 10 is started, thereby reducing the temperature inside the isolation chamber 21; this method effectively reduces energy loss; a pressure gauge is connected to the outlet pipe network 16 to facilitate observing the air pressure in the isolation chamber 21; in addition, the outlet pipe network 16 includes two outlet units 19 that are connected to the isolation chamber 21 and penetrate the thermal insulation layer 1, a first connecting pipe 13 that connects the two outlet units 19, and a second connecting pipe 12 that connects the first connecting pipe 13. The second connecting pipe 12 is connected to the vacuum pump 7. The first valve 8 and the exhaust pipe 6 are both installed on the second connecting pipe 12. The inlet pipe network 5 includes two inlet units 2 that are connected to the isolation chamber 21 and penetrate the thermal insulation layer 1, a third connecting pipe 3 that connects the two inlet units 2, and a fourth connecting pipe 4 that connects the third connecting pipe 3. The fourth connecting pipe 4 is connected to the refrigerating gas unit 10. The second valve 11 is installed on the fourth connecting pipe 4. The two outlet units 19 and the two inlet units 2 are circumferentially distributed on the outer wall of the isolation chamber 21, and the outlet units 19 and the inlet units 2 are alternately distributed. The outlet units 19 and the inlet units 2 have the same structure. The outlet unit 19 includes a plurality of horizontal pipes 15 that are connected to the isolation chamber 21 and penetrate the thermal insulation layer 1 and a vertical pipe 14 that is used to connect the plurality of horizontal pipes 15. The first connecting pipe 13 and the third connecting pipe 3 are respectively connected to the alternately distributed vertical pipes 14, so that the cold gas flows into the isolation chamber 21 evenly, which is beneficial to the uniform cooling of the isolation chamber 21; it is also beneficial to the uniform pressure relief inside the isolation chamber 21; the thermal insulation layer 1 is composed of a rubber layer, a polyurethane foam board, a polyethylene propylene polymer layer, and a stainless steel coil 18 from the inside to the outside. Among them, the rubber layer can effectively improve the tightness of the fit between the thermal insulation layer 1 and the tank body 20; the polyurethane foam board can improve the thermal insulation effect on the cold water inside the tank body 20; the polyethylene propylene polymer layer can effectively improve the waterproof performance and improve the service life of the thermal insulation layer 1 to a certain extent; the outermost stainless steel coil 18 effectively prevents the outside from damaging the thermal insulation layer 1 and improves the overall strength of the thermal insulation layer 1; a plurality of stainless steel straps 17 are wound around the outer wall of the stainless steel coil 18 to facilitate the fixation of the stainless steel coil 18.

[0022] Working principle

[0023] When it is necessary to preserve the temperature of the cold water in the tank body 20 for a short or long period of time, it is only necessary to close the third valve 9 and the second valve 11, and then start the vacuum pump 7 to evacuate the isolation chamber 21, thereby reducing the degree of heat exchange between the cold water and the external environment in the short or long period of time, thereby ensuring the cooling effect of the cold water in the cold storage tank; when it is necessary to preserve it for a long time, it is only necessary to close the first valve 8, and then open the third valve 9 and the second valve 11, and then start the refrigeration unit 10 to fill the cold air into the isolation chamber 21, thereby reducing the degree of heat exchange between the cold water and the external environment in the long term; ensuring the cooling effect of the cold water; therefore, the utility model improves the heat preservation capacity of the tank body 20, thereby ensuring the cooling effect of the cold water in the tank body 20.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A cold storage tank, characterized in that: The invention comprises an isolation chamber (21) fixedly connected to the outer wall of a tank body (20), a heat-insulating layer (1) fixedly connected to the outer wall of the isolation chamber (21), an outlet pipe network (16) and an inlet pipe network (5) connected to the isolation chamber (21), a vacuum pump (7) connected to the outlet pipe network (16), and a refrigeration unit (10) connected to the inlet pipe network (5); a first valve (8) is installed at one end of the outlet pipe network (16) close to the vacuum pump (7), a second valve (11) is installed at one end of the inlet pipe network (5) close to the refrigeration unit (10), an exhaust pipe (6) is connected to the outlet pipe network (16) between the first valve (8) and the isolation chamber (21), and a third valve (9) is provided on the exhaust pipe (6).

2. The cold storage tank according to claim 1, characterized in that: Temperature sensors are installed at the pipe opening of the exhaust pipe (6) and inside the isolation chamber (21).

3. The cold storage tank according to claim 1, characterized in that: The gas outlet pipe network (16) is connected to a pressure gauge.

4. The cold storage tank according to claim 1, characterized in that: The gas outlet pipe network (16) comprises a plurality of gas outlet units (19) connected to the isolation chamber (21) and penetrating the thermal insulation layer (1), a first connecting pipe (13) connected to the plurality of gas outlet units (19), and a second connecting pipe (12) connected to the first connecting pipe (13), the second connecting pipe (12) being connected to the vacuum pump (7), and the first valve (8) and the exhaust pipe (6) being installed on the second connecting pipe (12).

5. The cold storage tank according to claim 4, characterized in that: The air intake network (5) comprises a plurality of air intake units (2) connected to the isolation chamber (21) and penetrating the thermal insulation layer (1), a third connecting pipe (3) connected to the plurality of air intake units (2), and a fourth connecting pipe (4) connected to the third connecting pipe (3), the fourth connecting pipe (4) connected to the refrigeration unit (10), and the second valve (11) is installed on the fourth connecting pipe (4).

6. The cold storage tank according to claim 5, characterized in that: The plurality of air outlet units (19) and the plurality of air inlet units (2) are circumferentially distributed on the outer wall of the isolation chamber (21), and the air outlet units (19) and the air inlet units (2) are alternately distributed.

7. The cold storage tank according to claim 6, characterized in that: The air outlet unit (19) has the same structure as the air inlet unit (2). The air outlet unit (19) comprises a plurality of transverse tubes (15) connected to the isolation chamber (21) and penetrating the thermal insulation layer (1), and a vertical tube (14) used to connect the plurality of transverse tubes (15). The first connecting tube (13) and the third connecting tube (3) are respectively connected to the vertical tubes (14) which are alternately distributed.

8. The cold storage tank according to claim 1, characterized in that: The thermal insulation layer (1) comprises, from the inside to the outside, a rubber layer, a polyurethane foam board, a polyethylene polypropylene polymer layer and a stainless steel coil (18).

9. The cold storage tank according to claim 8, characterized in that: A plurality of stainless steel cable ties (17) are wound around the outer wall of the stainless steel coil (18).

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