Water energy storage system capable of simultaneously storing cold and heat and adjusting stored energy

Abstract

The invention discloses a water energy storage system capable of simultaneously storing cold and heat and adjusting stored energy, which comprises a cold supply mechanism, a heat supply mechanism, a cold supply and heat exchange mechanism, a heat supply and heat exchange mechanism and a tank pouring mechanism, a heat supply water inlet switch valve, a cold supply water inlet switch valve, a cold supply water outlet switch valve and a heat supply water outlet switch valve which are used for switching a water inlet pipeline and a water outlet pipeline are respectively arranged on each water tank; the water outlet end of the cold supply mechanism is connected with the multiple cold supply water inlet switch valves and the cold supply heat exchange mechanism, and the water inlet end of the cold supply mechanism is connected with the multiple cold supply water inlet switch valves, the multiple cold supply water outlet switch valves and the cold supply heat exchange mechanism. According to the system, various operation working conditions such as direct cold supply, direct heat supply, cold storage, heat storage, cold release and heat release can be achieved, the working conditions can be combined with one another, and the system is simple in form and has the capacity of flexibly adjusting the stored energy according to the load change of a tail end air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and further to a water energy storage system capable of storing cold and heat and regulating the amount of stored energy simultaneously. Background Art

[0002] Under the policy benefits of time-of-use electricity prices, air-conditioning energy-consuming units generally use ice storage or water storage systems with natural water temperature stratification to reduce the electricity cost of air-conditioning cooling in summer. However, with the improvement of building comfort requirements, the shortening of the spring and autumn transition seasons in southern China, and the need for cooling or heating in special places all year round, there are often situations where air-conditioning energy-consuming places provide cooling and heating at the same time. Ice storage or water storage systems with natural water temperature stratification cannot store heat at the same time, and can only increase the cost of purchasing a set of heat storage facilities to reduce the electricity cost of equipment that consumes electricity to provide heating.

[0003] In a water storage system with natural water temperature stratification, the amount of water in the energy storage tank is constant and there is a temperature gradient layer. If the terminal air conditioning load decreases, the stored cooling capacity cannot be fully used. As time goes by, the air conditioning supply and return water in the same energy storage tank will conduct heat to each other, causing the temperature gradient layer to thicken, which will further affect the energy storage efficiency. Therefore, a water storage system with natural water temperature stratification does not have the ability to flexibly adjust the storage capacity according to changes in the terminal air conditioning load.

[0004] Therefore, it is necessary to design a water storage system that can store cold and heat and regulate storage energy to solve the above problems. Summary of the invention

[0005] In view of the above technical problems, the purpose of the present invention is to provide a water storage system with the function of storing cold and heat and adjusting the storage amount at the same time, which can realize various operating conditions such as direct cooling, direct heating, cold storage, heat storage, cold release, heat release, etc., and the various operating conditions can be combined with each other. The system form is simple and has the ability to flexibly adjust the storage amount according to changes in the terminal air-conditioning load.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a water storage system with the function of storing cold and heat and regulating storage energy at the same time, including: a cooling mechanism for providing cold water, a heating mechanism for providing hot water, a cooling heat exchange mechanism for supplying cold water to the terminal, a heating heat exchange mechanism for supplying heat to the terminal, and a trough inversion mechanism, wherein the trough inversion mechanism includes a plurality of water troughs, each of which is respectively provided with a heating water inlet switch valve, a cooling water inlet switch valve, a cooling water outlet switch valve, and a heating water outlet switch valve for switching the inlet and outlet water pipelines; the water outlet end of the cooling mechanism is respectively connected to the plurality of cooling water inlet switch valves and the cooling heat exchange mechanism, and the cooling mechanism The water inlet end of the structure is respectively connected with several of the cooling water inlet switch valves, several of the cooling water outlet switch valves, and the cooling heat exchange mechanism; the water outlet end of the heating mechanism is respectively connected with several of the heating water inlet switch valves and the heating heat exchange mechanism, and the water inlet end of the heating mechanism is respectively connected with several of the heating water inlet switch valves, several of the heating water outlet switch valves, and the heating heat exchange mechanism; the cooling heat exchange mechanism is respectively connected with several of the cooling water inlet switch valves and several of the cooling water outlet switch valves; the heating heat exchange mechanism is respectively connected with several of the heating water inlet switch valves and several of the heating water outlet switch valves.

[0007] In some embodiments, the water outlet of the cooling mechanism, the cooling heat exchange mechanism, and the water inlet of the cooling mechanism are connected in sequence to form a direct cooling circuit, and a first regulating valve is arranged between the water outlet of the cooling mechanism and the cooling heat exchange mechanism, and the first regulating valve is used to control the opening size between the water outlet of the cooling mechanism and the cooling heat exchange mechanism.

[0008] In some embodiments, the cooling water outlet switch valve, the water inlet end of the cooling mechanism, the water outlet end of the cooling mechanism, and the cooling water inlet switch valve are connected in sequence to form a cold storage circuit, and a second regulating valve is arranged between the water outlet end of the cooling mechanism and the cooling water inlet switch valve, and the second regulating valve is used to control the opening size between the water outlet end of the cooling mechanism and the cooling water inlet switch valve, and a first switch valve is arranged between the cooling water outlet switch valve and the water inlet end of the cooling mechanism, and the first switch valve is used to control the conduction and closing between the cooling water outlet switch valve and the water inlet end of the cooling mechanism.

[0009] In some embodiments, the cooling water outlet switch valve, the cooling heat exchange mechanism, and the cooling water inlet switch valve are connected in sequence to form a cooling storage and cooling release circuit. A second switch valve is arranged between the cooling water outlet switch valve and the cooling heat exchange mechanism. The second switch valve is used to control the conduction and closing between the cooling water outlet switch valve and the cooling heat exchange mechanism. A third switch valve is arranged between the cooling heat exchange mechanism and the cooling water inlet switch valve. The third switch valve is used to control the conduction and closing between the cooling heat exchange mechanism and the cooling water inlet switch valve.

[0010] In some embodiments, the water outlet of the heating mechanism, the heat supply and heat exchange mechanism, and the water inlet of the heating mechanism are connected in sequence to form a direct heating circuit, and a third regulating valve is arranged between the water outlet of the heating mechanism and the heat supply and heat exchange mechanism, and the third regulating valve is used to control the opening size between the water outlet of the heating mechanism and the heat supply and heat exchange mechanism.

[0011] In some embodiments, the heating water outlet switch valve, the water inlet end of the heating mechanism, the water outlet end of the heating mechanism, and the heating water inlet switch valve are connected in sequence to form a heat storage circuit, and a fourth regulating valve is arranged between the water outlet end of the heating mechanism and the heating water inlet switch valve, and the fourth regulating valve is used to control the opening size between the water outlet end of the heating mechanism and the heating water inlet switch valve, and a fourth switch valve is arranged between the heating water outlet switch valve and the water inlet end of the heating mechanism, and the fourth switch valve is used to control the conduction and closing between the heating water outlet switch valve and the water inlet end of the heating mechanism.

[0012] In some embodiments, the heating water outlet switch valve, the heating heat exchange mechanism, and the heating water inlet switch valve are connected in sequence to form a heat storage and heat release circuit, a fifth switch valve is arranged between the heating water outlet switch valve and the heating heat exchange mechanism, and the fifth switch valve is used to control the conduction and closing between the heating water outlet switch valve and the heating heat exchange mechanism, and a sixth switch valve is arranged between the heating heat exchange mechanism and the heating water inlet switch valve, and the sixth switch valve is used to control the conduction and closing between the heating heat exchange mechanism and the heating water inlet switch valve.

[0013] In some embodiments, the pouring mechanism further includes a cold pouring water pump, a cold pouring water pump check valve, a hot pouring water pump and a hot pouring water pump check valve, the cold pouring water pump and the cold pouring water pump check valve are sequentially arranged at the water outlet end of the cold water outlet switch valve, and the hot pouring water pump and the hot pouring water pump check valve are sequentially arranged at the water outlet end of the hot water outlet switch valve.

[0014] In some embodiments, the inverted groove mechanism also includes a cold dynamic flow balancing valve and a hot dynamic flow balancing valve, the cold dynamic flow balancing valve is arranged at the water outlet end of the cold water supply outlet switch valve, and is located on the side of the cold inverted groove water pump check valve away from the cold inverted groove water pump; the hot dynamic flow balancing valve is arranged at the water outlet end of the hot water supply outlet switch valve, and is located on the side of the hot inverted groove water pump check valve away from the hot inverted groove water pump.

[0015] In some embodiments, the cooling mechanism comprises a cooling host, a cooling water pump check valve and a cooling water pump connected in sequence, and the cooling water pump check valve and the cooling water pump are arranged at the water inlet end of the cooling host;

[0016] The heating mechanism comprises a heating main unit, a hot water pump check valve and a hot water pump which are connected in sequence, and the hot water pump check valve and the hot water pump are arranged at the water inlet end of the heating main unit.

[0017] Compared with the prior art, the water energy storage system provided by the present invention with the function of storing cold and heat and regulating the storage energy simultaneously has the following beneficial effects:

[0018] In the present invention, the flow of tank reversal between multiple tanks is realized through the logical control of each valve, which can realize various operating conditions such as direct cooling, direct heating, cold storage, heat storage, cold release, heat release, etc., and each condition can be combined with each other. The system is simple in form and has the ability to flexibly adjust the storage amount according to the change of the terminal air-conditioning load; according to the change of the terminal air-conditioning load, the water level of the tank is set to adjust the storage amount or release energy; the system operation mode is flexible and changeable, which can meet the energy supply and storage needs under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0020] Figure 1 It is a structural schematic diagram of a water energy storage system having the functions of storing cold and heat and regulating the storage energy in a preferred embodiment of the present invention.

[0021] Description of Figure Numbers:

[0022] Cooling main unit 1, cooling water pump 2, cooling water pump check valve 3, heating main unit 4, hot water pump 5, hot water pump check valve 6, first water tank 7, second water tank 8, third water tank 9, fourth water tank 10, first heating water inlet switch valve 11, first cooling water inlet switch valve 12, first cooling water outlet switch valve 13, first heating water outlet switch valve 14, second heating water inlet switch valve 15, second cooling water inlet switch valve 16, second cooling water outlet switch valve 17, second heating water outlet switch valve 18, third heating water inlet switch valve 19, third cooling water inlet switch valve 20, third cooling water outlet switch valve 21, third heating water outlet switch valve 22, fourth heating water inlet switch valve 23, fourth cooling water inlet switch valve 24, fourth cooling water outlet switch valve 25, fourth heating water outlet switch valve 26, cold trough water pump 27, cold trough water pump check valve 28, cold dynamic flow balancing valve 29, hot trough water pump 30, hot trough water pump check valve 31, hot dynamic flow balancing valve 32, second regulating valve 33, first regulating valve 34, third switch valve 35, second switch valve 36, first switch valve 37, fourth regulating valve 38, third regulating valve 39, sixth switch valve 40, fifth switch valve 41, fourth switch valve 42, cooling heat exchange mechanism 43, heating heat exchange mechanism 44. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0024] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0025] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] In one embodiment, the reference specification Figure 1 The present invention provides a water storage system capable of storing cold and heat and regulating storage energy at the same time, comprising: a cooling mechanism for providing cold water, a heating mechanism for providing hot water, a cooling heat exchange mechanism for supplying cold water to the terminal, a heating heat exchange mechanism for supplying heat to the terminal, and a tank inversion mechanism, wherein the tank inversion mechanism comprises a plurality of water tanks, each of which is respectively provided with a heating water inlet switch valve, a cooling water inlet switch valve, a cooling water outlet switch valve, and a heating water outlet switch valve for switching the inlet and outlet water pipelines; the water outlet end of the cooling mechanism is respectively connected to a plurality of cooling water inlet switch valves, a cooling heat exchange mechanism, and a heating water outlet switch valve. The cooling mechanism is connected with a plurality of cooling water inlet switch valves, a plurality of cooling water outlet switch valves, and a cooling heat exchange mechanism; the heating mechanism has a plurality of heating water inlet switch valves and a heating heat exchange mechanism; the cooling heat exchange mechanism is connected with a plurality of cooling water inlet switch valves and a plurality of cooling water outlet switch valves; the heating heat exchange mechanism is connected with a plurality of heating water inlet switch valves and a plurality of heating water outlet switch valves.

[0029] Specifically, the cooling mechanism includes a cooling host 1, a cooling water pump check valve 3 and a cooling water pump 2 connected in sequence, and the cooling water pump check valve 3 and the cooling water pump 5 are arranged at the water inlet end of the cooling host 1. The heating mechanism includes a heating host 4, a heating water pump check valve 6 and a heating water pump 5 connected in sequence, and the heating water pump check valve 6 and the heating water pump 5 are arranged at the water inlet end of the heating host 4.

[0030] The pouring mechanism also includes a cold pouring water pump 27, a cold pouring water pump check valve 28, a hot pouring water pump 30 and a hot pouring water pump check valve 31. The cold pouring water pump 27 and the cold pouring water pump check valve 28 are arranged in sequence at the water outlet end of the cold water outlet switch valve, and the hot pouring water pump 30 and the hot pouring water pump check valve 31 are arranged in sequence at the water outlet end of the hot water outlet switch valve.

[0031] Furthermore, the tank inversion mechanism further includes a cold dynamic flow balancing valve 29 and a hot dynamic flow balancing valve 32. The cold dynamic flow balancing valve 29 is arranged at the outlet end of the cold water outlet switch valve and is located on the side of the cold tank inversion water pump check valve 28 away from the cold tank inversion water pump 27; the hot dynamic flow balancing valve 32 is arranged at the outlet end of the hot water outlet switch valve and is located on the side of the hot tank inversion water pump check valve 31 away from the hot tank inversion water pump 30. By arranging the cold dynamic flow balancing valve 29 at the outlet end of the cold tank inversion water pump 27 and the hot tank inversion water pump check valve 31 at the outlet end of the hot tank inversion water pump 30, it is possible to effectively prevent the water level changes of the two tanks during the tank inversion process from causing changes in the pipeline characteristic curves of the cold tank inversion water pump 27 and the hot tank inversion water pump 30, thereby avoiding unstable flow during the tank inversion process.

[0032] In one embodiment, the reference specification Figure 1 , the following is an example of a tank pouring mechanism including four tanks, namely, a first tank 7, a second tank 8, a third tank 9, and a fourth tank 10. Among them, the first tank 7 is provided with a first heating water inlet switch valve 11, a first cooling water inlet switch valve 12, a first cooling water outlet switch valve 13, and a first heating water outlet switch valve 14, the second tank 8 is provided with a second heating water inlet switch valve 15, a second cooling water inlet switch valve 16, a second cooling water outlet switch valve 17, and a second heating water outlet switch valve 18, the third tank 9 is provided with a third heating water inlet switch valve 19, a third cooling water inlet switch valve 20, a third cooling water outlet switch valve 21, and a third heating water outlet switch valve 22, and the fourth tank 10 is provided with a fourth heating water inlet switch valve 23, a fourth cooling water inlet switch valve 24, a fourth cooling water outlet switch valve 25, and a fourth heating water outlet switch valve 26.

[0033] Reference Manual Attached Figure 1 The water outlet of the cooling host 1, the cooling heat exchange mechanism 43, the cooling water pump 2, the cooling water pump check valve 3, and the water inlet of the cooling host 1 are sequentially connected to form a direct cooling circuit, through which the cooling host 1 can directly provide cooling for the cooling heat exchange mechanism 43. A first regulating valve 34 is provided between the water outlet of the cooling host 1 and the cooling heat exchange mechanism 43, and the first regulating valve 34 is used to control the opening size between the water outlet of the cooling host 1 and the cooling heat exchange mechanism 43.

[0034] Reference Manual Attached Figure 1, a cooling water outlet switch valve, a cold tank water pump 27, a cold tank water pump check valve 28, a cold dynamic flow balancing valve 29, a cooling water pump 2, a cooling water pump check valve 3, a cooling host 1, and a cooling water inlet switch valve are sequentially connected to form a cold storage circuit, through which the cooling host 1 can directly store cold for the water tank. The first cooling water inlet switch valve 12, the second cooling water inlet switch valve 16, the third cooling water inlet switch valve 20, and the fourth cooling water inlet switch valve 24 are connected in parallel and connected to the water outlet of the cooling host 1 through the second regulating valve 33. The second regulating valve 33 is used to control the opening size between the water outlet of the cooling host 1 and the parallel pipelines of the first cooling water inlet switch valve 12, the second cooling water inlet switch valve 16, the third cooling water inlet switch valve 20, and the fourth cooling water inlet switch valve 24. The first cooling water outlet switch valve 13, the second cooling water outlet switch valve 17, the third cooling water outlet switch valve 21, and the fourth cooling water outlet switch valve 25 are connected in parallel and are connected to the water inlet end of the cooling water pump 2 in sequence through the cold trough water pump 27, the cold trough water pump check valve 28, the cold dynamic flow balancing valve 29, and the first switch valve 37. The first switch valve 37 is used to control the conduction and closing between the parallel pipelines of the first cooling water outlet switch valve 13, the second cooling water outlet switch valve 17, the third cooling water outlet switch valve 21, and the fourth cooling water outlet switch valve 25 and the water inlet end of the cooling water pump 2.

[0035] Reference Manual Attached Figure 1 , a cooling water outlet switch valve, a cooling heat exchange mechanism 43, and a cooling water inlet switch valve are sequentially connected to form a cooling storage capacity release circuit, through which the water tank can provide cooling for the cooling heat exchange mechanism 43. The first cooling water outlet switch valve 13, the second cooling water outlet switch valve 17, the third cooling water outlet switch valve 21, and the fourth cooling water outlet switch valve 25 are connected in parallel and sequentially connected to the cooling heat exchange mechanism 43 through the cold inverted tank water pump 27, the cold inverted tank water pump check valve 28, the cold dynamic flow balance valve 29, and the second switch valve 36. The second switch valve 36 is used to control the conduction and closing between the parallel pipelines of the first cooling water outlet switch valve 13, the second cooling water outlet switch valve 17, the third cooling water outlet switch valve 21, and the fourth cooling water outlet switch valve 25 and the cooling heat exchange mechanism 43. The first cooling water inlet switch valve 12, the second cooling water inlet switch valve 16, the third cooling water inlet switch valve 20, and the fourth cooling water inlet switch valve 24 are connected in parallel and connected to the cooling heat exchange mechanism 43 through the third switch valve 35. The third switch valve 35 is used to control the conduction and closing between the parallel pipelines of the first cooling water inlet switch valve 12, the second cooling water inlet switch valve 16, the third cooling water inlet switch valve 20, and the fourth cooling water inlet switch valve 24 and the cooling heat exchange mechanism 43.

[0036] Reference Manual Attached Figure 1The water outlet of the heating main unit 4, the heat supply heat exchange mechanism 44, the hot water pump 5, the hot water pump check valve 6, and the water inlet of the heating main unit 4 are sequentially connected to form a direct heating circuit, through which the heating main unit 4 can directly provide heat to the heat supply heat exchange mechanism 44. A third regulating valve 39 is provided between the water outlet of the heating main unit 4 and the heat supply heat exchange mechanism 44, and the third regulating valve 39 is used to control the opening size between the water outlet of the heating main unit 4 and the heat supply heat exchange mechanism 44.

[0037] Reference Manual Attached Figure 1 , a heating water outlet switch valve, a heat inverted tank water pump 30, a heat inverted tank water pump check valve 31, a thermal dynamic flow balancing valve 32, a hot water supply pump 5, a hot water supply pump check valve 6, a heating host 4, and a heating water inlet switch valve are sequentially connected to form a heat storage circuit, through which the heating host 4 can directly store heat for the water tank. The first heating water inlet switch valve 11, the second heating water inlet switch valve 15, the third heating water inlet switch valve 19, and the fourth heating water inlet switch valve 23 are connected in parallel and connected to the water outlet of the heating host 4 through the fourth regulating valve 38. The fourth regulating valve 38 is used to control the opening size between the water outlet of the heating host 4 and the parallel pipelines of the first heating water inlet switch valve 11, the second heating water inlet switch valve 15, the third heating water inlet switch valve 19, and the fourth heating water inlet switch valve 23. The first heating water outlet switch valve 14, the second heating water outlet switch valve 18, the third heating water outlet switch valve 22, and the fourth heating water outlet switch valve 26 are connected in parallel and are connected to the water inlet end of the hot water supply pump 5 in sequence through the hot trough water pump 30, the hot trough water pump check valve 31, the thermal dynamic flow balancing valve 32, and the fourth switch valve 42. The fourth switch valve 42 is used to control the conduction and closing between the parallel pipelines of the first heating water outlet switch valve 14, the second heating water outlet switch valve 18, the third heating water outlet switch valve 22, and the fourth heating water outlet switch valve 26 and the water inlet end of the hot water supply pump 5.

[0038] Reference Manual Attached Figure 1A heating water outlet switch valve, a heating heat exchange mechanism 44, and a heating water inlet switch valve are sequentially connected to form a heat storage heat release circuit, through which the water tank can heat the heating heat exchange mechanism 44. The first heating water outlet switch valve 14, the second heating water outlet switch valve 18, the third heating water outlet switch valve 22, and the fourth heating water outlet switch valve 26 are connected in parallel and sequentially connected to the heating heat exchange mechanism 44 through the hot tank water pump 30, the hot tank water pump check valve 31, the thermal dynamic flow balance valve 32, and the fifth switch valve 41. The fifth switch valve 41 is used to control the conduction and closing between the parallel pipelines of the first heating water outlet switch valve 14, the second heating water outlet switch valve 18, the third heating water outlet switch valve 22, and the fourth heating water outlet switch valve 26 and the heating heat exchange mechanism 44. The first heating water inlet switch valve 11, the second heating water inlet switch valve 15, the third heating water inlet switch valve 19, and the fourth heating water inlet switch valve 23 are connected in parallel and connected to the heating heat exchange mechanism 44 through the sixth switch valve 40. The sixth switch valve 40 is used to control the conduction and closing between the parallel pipelines of the first heating water inlet switch valve 11, the second heating water inlet switch valve 15, the third heating water inlet switch valve 19, and the fourth heating water inlet switch valve 23 and the heating heat exchange mechanism 44.

[0039] Each regulating valve and switch valve in the above embodiment can adopt an electric valve, so that the whole system can operate automatically through the logic control of the valve. The cooling heat exchange mechanism 43 can adopt a cooling plate heat exchanger, and heat is exchanged with the terminal air-conditioning water through the cooling plate heat exchanger, so as to supply cooling to the terminal air-conditioning system. The heating heat exchange mechanism 44 can adopt a heating plate heat exchanger, and heat is exchanged with the terminal air-conditioning water through the heating plate heat exchanger, so as to supply heat to the terminal air-conditioning system. Of course, the cooling heat exchange mechanism 43 and the heating heat exchange mechanism 44 can also adopt other structures or devices, as long as they can achieve the above functions.

[0040] It should be pointed out that the specific structure of the trough inversion mechanism is explained corresponding to the drawings in the specification. In actual use, the water tanks can also be set to 2, 3, 5, 6, etc. The number can be set according to actual needs. As the number of water tanks changes, the specific connection method will also change accordingly. This is only for better explanation of the present invention and should not constitute a limitation to the present invention.

[0041] In this embodiment, the flow of tank reversal between multiple tanks is realized through the logical control of each valve, which can realize various operating conditions such as direct cooling, direct heating, cold storage, heat storage, cold release, heat release, etc., and each condition can be combined with each other. The system is simple in form and has the ability to flexibly adjust the storage amount according to the change of terminal air-conditioning load; according to the change of terminal air-conditioning load, the water level of the tank is set to adjust the storage amount or release energy; the system operation mode is flexible and changeable, which can meet the energy supply and storage needs under different working conditions.

[0042] Exemplarily, the operating condition is to set the cold storage capacity of three tanks of water to store cold and directly supply cold at the same time.

[0043] The second regulating valve 33 is set to be fully open, and the first switch valve 37 is opened to switch to the cold storage condition; in the initial state, when the first water tank 7 is empty, the second water tank 8 is full, the third water tank 9 is full, and the fourth water tank 10 is full, the cold tank reversing water pump 27 and the cooling host 1 are started, and the first cooling water inlet switch valve 12 and the second cooling water outlet switch valve 17 are opened. The water in the second water tank 8 is cooled by the cooling host 1 and then stored in the first water tank 7; when the reversing process of the first water tank 7 and the second water tank 8 is completed, the first cooling water inlet switch valve 12 and the second cooling water outlet switch valve 17 are closed, and the second cooling water inlet switch valve 16 and the third cooling water outlet switch valve 17 are opened. The water in the third water tank 9 is stored in the second water tank 8 after being cooled by the cooling main unit 1; when the second water tank 8 and the third water tank 9 are completed, the second cooling water inlet switch valve 16 and the third cooling water outlet switch valve 21 are closed, and the third cooling water inlet switch valve 20 and the fourth cooling water outlet switch valve 25 are opened, and the water in the fourth water tank 10 is stored in the third water tank 9 after being cooled by the cooling main unit 1; when the third water tank 9 and the fourth water tank 10 are completed, the third cooling water inlet switch valve 20 and the fourth cooling water outlet switch valve 25 are closed, and the cold tank water pump 27 and the cooling main unit 1 are closed to complete the cold storage of the three tanks. During this period, the cooling water pump 2 is started, and the first regulating valve 34 is opened to directly supply cooling. The cold storage amount and the direct cooling amount are allocated by adjusting the opening of the first regulating valve 34 and the second regulating valve 33.

[0044] Exemplarily, the operating condition is to set the cold storage capacity of a tank of water to release cold and directly provide cooling at the same time.

[0045] The first regulating valve 34 is set to be fully open, and the second switch valve 36 and the third switch valve 35 are opened to switch to the cold release working condition; in the initial state, when the first water tank 7 is empty and the second water tank 8 has completed the full storage of cold, the cold return tank water pump 27 is started, the first cold water inlet electric switch valve 12 and the second cold water outlet electric switch valve 17 are opened, and the cold water in the second water tank 8 is released to the terminal air conditioner through the functional heat exchange mechanism 43 and then stored in the first water tank 7; after the return process of the first water tank 7 and the second water tank 8 is completed, the first cold water inlet electric switch valve 12 and the second cold water outlet electric switch valve 17 are closed, and the cold return tank water pump 27 is closed to complete the release of cold water in one tank. During this period, the cold water pump 2 is started, and the cold supply host 1 is started to directly supply cold, and the cold release amount and the direct supply energy are adjusted by adjusting the frequency of the cold water pump 2 and the cold return tank water pump 27.

[0046] Exemplarily, the operating condition is to set the cold storage capacity of half of the water tank and the heat storage capacity of half of the water tank to store cold and heat at the same time and directly provide heat.

[0047] The second regulating valve 33 is set to be fully open, the first switch valve 37 is opened, and the operation is switched to the cold storage state; the fourth regulating valve 38 is set to be fully open, the fourth switch valve 42 is opened, and the operation is switched to the heat storage state; in the initial state, when the first water tank 7 is empty, the second water tank 8 is full, the third water tank 9 is empty, and the fourth water tank 10 is full, the cold reverse tank water pump 27 and the cooling host 1 are started, the first cooling water inlet switch valve 12 and the second cooling water outlet switch valve 17 are opened, and the water in the second water tank 8 is cooled by the cooling host 1 and then stored in the first water tank 7; when the water level of the first water tank 7 reaches half the tank, the first cooling water inlet switch valve 12 and the second cooling water outlet switch valve 17 are closed, and the cold reverse tank water pump 27 and the cooling host 1 are closed to complete the cold storage of half the tank water. At the same time, the hot water pump 30 and the heating main unit 4 are started, the third heating water inlet switch valve 19 and the fourth heating water outlet switch valve 26 are opened, and the water in the fourth water tank 10 is heated by the heating main unit 4 and stored in the third water tank 9; when the water level of the third water tank 9 reaches half of the tank, the third heating water inlet switch valve 19 and the fourth heating water outlet switch valve 26 are closed, and the hot water pump 30 and the heating main unit 4 are closed to complete the heat storage of the half tank water. During this period, the hot water pump 5 is started, and the third regulating valve 39 is opened to directly supply heat. The amount of heat storage and direct heat supply is allocated by adjusting the opening of the third regulating valve 39 and the fourth regulating valve 38.

[0048] The water energy storage system with simultaneous cold and heat storage and adjustable storage capacity can realize any combination of the six basic working conditions of direct cooling, direct heating, cold storage, heat storage, cold release, and heat release, except that cold storage and cold release are not performed at the same time, and heat storage and heat release are not performed at the same time. The implementation principles of other combinations are the same as the above examples, and will not be elaborated here.

[0049] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0050] It should be noted that the above embodiments can be freely combined as needed. 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 principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A water energy storage system capable of storing cold and heat and regulating the amount of stored energy, characterized in that: include: A cooling mechanism for providing cold water, a heating mechanism for providing hot water, a cooling heat exchange mechanism for supplying cooling to the terminal, a heating heat exchange mechanism for supplying heating to the terminal, and a trough inversion mechanism, wherein the trough inversion mechanism comprises a plurality of water troughs, each of which is respectively provided with a heating water inlet switch valve, a cooling water inlet switch valve, a cooling water outlet switch valve, and a heating water outlet switch valve for switching the inlet and outlet water pipelines; the water outlet end of the cooling mechanism is respectively connected to the plurality of cooling water inlet switch valves and the cooling heat exchange mechanism, and the water inlet end of the cooling mechanism is respectively connected to the plurality of cooling water inlet switch valves. , several of the cooling water outlet switch valves, and the cooling heat exchange mechanism are connected; the water outlet end of the heating mechanism is respectively connected with several of the heating water inlet switch valves and the heating heat exchange mechanism, and the water inlet end of the heating mechanism is respectively connected with several of the heating water inlet switch valves, several of the heating water outlet switch valves, and the heating heat exchange mechanism; the cooling heat exchange mechanism is respectively connected with several of the cooling water inlet switch valves and several of the cooling water outlet switch valves; the heating heat exchange mechanism is respectively connected with several of the heating water inlet switch valves and several of the heating water outlet switch valves.

2. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 1, characterized in that: The water outlet of the cooling mechanism, the cooling heat exchange mechanism, and the water inlet of the cooling mechanism are connected in sequence to form a direct cooling circuit. A first regulating valve is provided between the water outlet of the cooling mechanism and the cooling heat exchange mechanism. The first regulating valve is used to control the opening size between the water outlet of the cooling mechanism and the cooling heat exchange mechanism.

3. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 2, characterized in that: The cooling water outlet switch valve, the water inlet end of the cooling mechanism, the water outlet end of the cooling mechanism, and the cooling water inlet switch valve are connected in sequence to form a cold storage circuit. A second regulating valve is arranged between the water outlet end of the cooling mechanism and the cooling water inlet switch valve. The second regulating valve is used to control the opening size between the water outlet end of the cooling mechanism and the cooling water inlet switch valve. A first switch valve is arranged between the cooling water outlet switch valve and the water inlet end of the cooling mechanism. The first switch valve is used to control the conduction and closing between the cooling water outlet switch valve and the water inlet end of the cooling mechanism.

4. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 3, characterized in that: The cooling water outlet switch valve, the cooling heat exchange mechanism, and the cooling water inlet switch valve are connected in sequence to form a cooling storage and release circuit. A second switch valve is arranged between the cooling water outlet switch valve and the cooling heat exchange mechanism. The second switch valve is used to control the conduction and closing between the cooling water outlet switch valve and the cooling heat exchange mechanism. A third switch valve is arranged between the cooling heat exchange mechanism and the cooling water inlet switch valve. The third switch valve is used to control the conduction and closing between the cooling heat exchange mechanism and the cooling water inlet switch valve.

5. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 1, characterized in that: The water outlet of the heating mechanism, the heat supply and heat exchange mechanism, and the water inlet of the heating mechanism are connected in sequence to form a direct heating circuit. A third regulating valve is arranged between the water outlet of the heating mechanism and the heat supply and heat exchange mechanism. The third regulating valve is used to control the opening size between the water outlet of the heating mechanism and the heat supply and heat exchange mechanism.

6. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 5, characterized in that: The heating water outlet switch valve, the water inlet end of the heating mechanism, the water outlet end of the heating mechanism, and the heating water inlet switch valve are connected in sequence to form a heat storage circuit. A fourth regulating valve is arranged between the water outlet end of the heating mechanism and the heating water inlet switch valve. The fourth regulating valve is used to control the opening size between the water outlet end of the heating mechanism and the heating water inlet switch valve. A fourth switch valve is arranged between the heating water outlet switch valve and the water inlet end of the heating mechanism. The fourth switch valve is used to control the conduction and closing between the heating water outlet switch valve and the water inlet end of the heating mechanism.

7. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 6, characterized in that: The heating water outlet switch valve, the heating heat exchange mechanism, and the heating water inlet switch valve are connected in sequence to form a heat storage and heat release circuit. A fifth switch valve is arranged between the heating water outlet switch valve and the heating heat exchange mechanism. The fifth switch valve is used to control the conduction and closing between the heating water outlet switch valve and the heating heat exchange mechanism. A sixth switch valve is arranged between the heating heat exchange mechanism and the heating water inlet switch valve. The sixth switch valve is used to control the conduction and closing between the heating heat exchange mechanism and the heating water inlet switch valve.

8. The water energy storage system capable of storing cold and heat and regulating the storage capacity simultaneously according to any one of claims 1 to 7, characterized in that: The pouring mechanism also includes a cold pouring water pump, a cold pouring water pump check valve, a hot pouring water pump and a hot pouring water pump check valve. The cold pouring water pump and the cold pouring water pump check valve are sequentially arranged at the water outlet end of the cold water outlet switch valve, and the hot pouring water pump and the hot pouring water pump check valve are sequentially arranged at the water outlet end of the hot water outlet switch valve.

9. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 8, characterized in that: The inverted groove mechanism also includes a cold dynamic flow balancing valve and a hot dynamic flow balancing valve. The cold dynamic flow balancing valve is arranged at the water outlet end of the cold water outlet switch valve, and is located on the side of the cold inverted groove water pump check valve away from the cold inverted groove water pump; the hot dynamic flow balancing valve is arranged at the water outlet end of the hot water outlet switch valve, and is located on the side of the hot inverted groove water pump check valve away from the hot inverted groove water pump.

10. The water energy storage system capable of storing cold and heat and regulating the amount of stored energy according to claim 1, characterized in that: The cooling mechanism comprises a cooling main unit, a cooling water pump check valve and a cooling water pump connected in sequence, wherein the cooling water pump check valve and the cooling water pump are arranged at the water inlet end of the cooling main unit; The heating mechanism comprises a heating main unit, a hot water pump check valve and a hot water pump which are connected in sequence, and the hot water pump check valve and the hot water pump are arranged at the water inlet end of the heating main unit.

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