Air conditioner ventilation system for electrochemical energy storage prefabricated cabin

Abstract

The utility model discloses an air-conditioning ventilation system for an electrochemical energy storage prefabricated cabin, which comprises a cabin body, a roof and a foundation, the roof is of a cavity structure, and a hollow space is arranged in the foundation; the air conditioner further comprises an indoor unit, an outdoor unit, a fresh air machine, a ventilator, an electric shutter and a ventilation shutter. On the basis of an original prefabricated cabin, adjustment to local conditions is achieved, co-fusion of new equipment and old equipment is achieved, and maximization of energy conservation is achieved. The system has the temperature and humidity control function, energy can be saved to the maximum extent, new equipment and old equipment can be fused together, and the cabin body can better adapt to various use requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated cabin equipment of electrochemical energy storage power stations, and in particular relates to an air conditioning and ventilation system for an electrochemical energy storage prefabricated cabin. Background Art

[0002] At present, in electrochemical energy storage projects, prefabricated cabins are widely used because of their advantages of fast construction and low investment. The power equipment in the prefabricated cabin generally uses industrial refrigeration and air conditioning to cool down and control the temperature in the cabin, but there are the following disadvantages:

[0003] (1) Industrial refrigeration and air conditioning often only considers temperature control, while relay rooms, centralized control rooms, and electronic equipment rooms also require humidity control according to regulatory requirements.

[0004] (2) The ventilation of the prefabricated cabin foundation is often overlooked. For example, the GIS distribution room will produce toxic sulfur hexafluoride gas that will escape into the foundation, posing a risk of poisoning to maintenance personnel who enter. According to the specifications, an independent mechanical exhaust system should be installed.

[0005] (3) Prefabricated cabin manufacturers generally only focus on the heat dissipation of power equipment in the cabin, and believe that energy saving of the cabin is the energy saving of air conditioning. They cannot reconstruct from the underlying logic of energy consumption, lack comprehensive emission reduction and consumption reduction measures from multiple angles and aspects, do not utilize natural cold sources, and cannot achieve maximum energy savings. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide an air conditioning and ventilation system for an electrochemical energy storage prefabricated cabin, which has temperature and humidity control functions, can save energy to the maximum extent, and can achieve the integration of new and old equipment.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin includes a cabin, a roof and a foundation, wherein the roof is a cavity structure and the foundation has an inner space; it also includes an indoor unit, an outdoor unit, a fresh air fan, a ventilator, an electric shutter and a ventilation shutter; a floor air duct is arranged in the cabin, the floor air duct is connected to the roof cavity through an air duct, and ventilation shutters are respectively arranged on the left and right sides of the inner side of the outer eaves of the roof cavity; the indoor unit is arranged above the cabin; the fresh air fan is placed in the foundation and close to the bottom of the cabin, and its air outlet is connected to the floor air duct; the ventilator is embedded and installed at a high position on the cabin wall; the indoor unit and the fresh air fan share an outdoor unit, and the three are connected by a refrigerant pipe; a temperature sensor and a humidity sensor are arranged in the cabin, and a temperature sensor is arranged in the foundation; the floor air duct is connected to the cabin space and the roof cavity through electric adjustable fire dampers A and B respectively, the side outer wall of the floor air duct is installed with electric shutters to connect to the outdoors, and the bottom of the floor air duct is connected to the air outlet of the fresh air fan.

[0009] Combustible gas concentration sensors are installed inside the cabin and the foundation.

[0010] The combustible gas concentration sensors are respectively arranged inside the cabin and on the top of the foundation.

[0011] The indoor unit, the outdoor unit, the fresh air blower, the ventilator, the electric regulating fire damper, the temperature sensor, the humidity sensor, the combustible gas concentration sensor and the electric shutters are all electrically connected to the controller and controlled by it.

[0012] The controller is arranged on the outer wall of the cabin.

[0013] The outdoor unit is arranged outside the cabin and close to the outer wall.

[0014] The ventilator is a wall-type fan with built-in check valve and protective cover.

[0015] In view of the problems existing in the air conditioning and ventilation of the current electrochemical energy storage prefabricated cabin, the inventor has designed an air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin, including a cabin, a roof and a foundation, the roof is a cavity structure, and the foundation is an inner empty space; it also includes an indoor unit, an outdoor unit, a fresh air fan, a ventilator, an electric blind and a ventilation blind; a floor air duct is arranged in the cabin, the floor air duct is connected to the roof cavity through an air duct, and ventilation blinds are respectively arranged on the left and right sides of the inner side of the outer eaves of the roof cavity; the indoor unit is arranged above the cabin; the fresh air The machine is placed in the foundation and close to the bottom of the cabin, and its air outlet is connected to the floor air duct; the ventilator is embedded and installed at a high position on the cabin wall; the indoor unit and the fresh air fan share an outdoor unit, and the three are connected by a refrigerant pipe; a temperature sensor and a humidity sensor are installed in the cabin, and a temperature sensor is installed in the foundation; the floor air duct is connected to the cabin space and the roof cavity through electrically adjustable fire dampers A and B respectively, and electric blinds are installed on the side outer wall of the floor air duct to connect to the outdoors, and the bottom surface of the floor air duct is connected to the air outlet of the fresh air fan. The utility model is adapted to local conditions on the basis of the original prefabricated cabin, realizes the integration of new and old equipment, and achieves maximum energy saving. Compared with the prior art, the utility model has the following technical effects:

[0016] (1) It breaks through the limitation of industrial refrigeration air conditioners that they cannot dehumidify, and realizes the separate processing and control of temperature and humidity in the prefabricated cabin, so that the cabin can better adapt to various usage requirements;

[0017] (2) Integrate the prefabricated cabin and foundation, fully tap the energy-saving potential of the maintenance structure, and cleverly use the structural layout to achieve the integration of new and old equipment;

[0018] (3) Reconstruct and rethink the underlying logic of energy consumption, make full use of natural cooling sources, and enhance the protection capabilities of the cabin itself, thereby maximizing energy savings;

[0019] (4) The system control is integrated. The controller controls and switches the working conditions of the fresh air fan, indoor unit and ventilation fan according to different outdoor environmental conditions, perfectly realizing the one-button start-up and unattended operation mode. It can switch between multiple working conditions to accurately control temperature and humidity, perfectly realizing unattended and precise temperature and humidity control, so that the cabin can better adapt to various extreme outdoor environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an air conditioning and ventilation system for an electrochemical energy storage prefabricated cabin of the utility model.

[0021] In the figure: 1 battery pack, 2 indoor unit, 3 outdoor unit, 4 fresh air fan, 5 ventilator, 6 electric shutters, 7 electric adjustable fire damper B, 8 electric adjustable fire damper A, 9 floor air duct, 10 air duct, 11 combustible gas concentration sensor B, 12 temperature sensor B, 13 combustible gas concentration sensor A, 14 humidity sensor, 15 temperature sensor A, 16 ventilation shutters A, 17 ventilation shutters B, 18 controller, 19 cabin, 20 roof, 21 foundation. DETAILED DESCRIPTION

[0022] 1. Basic structure

[0023] like Figure 1 In the above, the battery room prefabricated cabin is taken as an example, wherein the power device is a battery pack 1. The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin of the utility model comprises a cabin body 19, a roof 20, a foundation 21, an indoor unit 2, an outdoor unit 3, a fresh air blower 4, a ventilator 5, an electric shutter 6 and a ventilation shutter; the roof is a cavity structure, and the foundation is an inner space. If the original flat roof can be added with a suspended ceiling to form an air barrier layer, and the height of the inner space of the foundation is determined according to the design requirements.

[0024] A floor duct 9 is arranged in the cabin, and the floor duct is connected to the roof cavity 20 through the air duct 10. Ventilation shutters (ventilation shutter A16 and ventilation shutter B17) are respectively arranged on the left and right sides of the inner side of the outer eaves of the roof cavity; the indoor unit is arranged above the cabin, and has a return air inlet and an air supply inlet. The indoor return air enters the indoor unit through the return air inlet, and is injected into the room through the air supply inlet after being processed by the indoor unit; the fresh air fan is placed in the foundation and close to the bottom of the cabin, and has an air inlet and an air outlet, and its air outlet is connected to the floor duct. The low-temperature air in the foundation is processed by the fresh air fan to form Fresh air is injected into the indoor or roof cavity through the floor air duct according to different working conditions; the ventilator is a wall-type fan with a check valve and a protective cover, which is embedded and installed at a high position on the cabin wall; the indoor unit and the fresh air fan share an outdoor unit (if it is an energy-saving renovation project, a fresh air fan and an outdoor unit can be added separately), and the three are connected by a refrigerant pipe. The outdoor unit is arranged outside the cabin, close to the outer wall, avoiding the entrance and exit; a temperature sensor A15 and a humidity sensor 14 are provided in the cabin, and a temperature sensor B12 is provided in the foundation; the floor air duct is connected to the cabin space and the roof cavity respectively through an electric adjustable fire damper A 8 and an electric adjustable fire damper B 7, and an electric blind 6 is installed on the side outer wall of the floor air duct to connect with the outdoors, and the bottom of the floor air duct is connected to the air outlet of the fresh air fan and the foundation.

[0025] Relevant components can be added according to different uses. For example, the battery room can be equipped with combustible gas concentration sensors (combustible gas concentration sensor A13, combustible gas concentration sensor B11) inside the cabin and on the top of the foundation. The indoor unit, outdoor unit, fresh air fan, ventilator, electric adjustable fire damper, temperature sensor, humidity sensor, combustible gas concentration sensor and electric blinds are all electrically connected to and controlled by the controller 18 (such as a PLC controller). The controller 18 is set on the outer wall of the cabin where it is convenient for personnel to operate.

[0026] According to needs and regulatory requirements, explosion-proof equipment can be used for indoor units, fresh air fans and ventilators.

[0027] 2. Working Process

[0028] The automatic control strategy of the system equipment is: the indoor unit automatically and continuously adjusts the operating frequency of the indoor unit according to the temperature difference between the supply and return air, and then makes a secondary correction to its frequency according to the temperature difference between indoor and outdoor, to ensure that the temperature in the cabin is at the set value; the fresh air fan automatically and continuously adjusts the operating frequency of the fresh air fan according to the temperature difference between the supply and intake air, and then makes a secondary correction to its frequency according to the humidity difference between indoor and outdoor, to ensure that the basic temperature and the temperature and humidity in the cabin are at the set value. The process demand control of the minimum air volume operation is realized, and the phenomenon of large air volume and small temperature difference is eliminated. All fans and air conditioners are network integrated, with on-site and remote automatic control functions.

[0029] The controller controls and switches the working conditions of the air conditioning and ventilation system according to the sensors. The details are as follows:

[0030] In extremely hot weather or when other equipment is thermally out of control (indoor temperature ≥ 30℃), turn on the indoor unit, fresh air fan, ventilator, outdoor unit, and electric adjustable fire damper B, close the electric blinds and electric adjustable fire damper A, and cool the indoor unit and fresh air fan together, maintain a slightly positive pressure in the cabin, so that the temperature and humidity in the cabin can be quickly restored to ensure safe operation of the equipment; under normal summer conditions (20℃≤indoor temperature<30℃), turn on the indoor unit, fresh air fan, outdoor unit, and electric adjustable fire damper B, close the ventilator, electric blinds and electric adjustable fire damper A, and the indoor unit circulates and cools the indoor air. The fresh air fan does not cool but only filters the outlet air, so that the low-temperature air in the foundation passes through the floor air duct and the roof cavity, and then is discharged to the outdoors through the ventilation blinds A and ventilation blinds B under the eaves. The floor air duct and roof A flowing air layer is formed in the top cavity, which greatly reduces the heat transfer coefficient of the cabin structure, enhances the heat insulation and radiation protection capabilities, forms a "breathing" roof and ground, and reduces the energy consumption load of the enclosure structure; in transitional seasons or winter (indoor temperature <20°C), turn on the fresh air fan, ventilator, electric adjustable fire damper A, and electric adjustable fire damper B, close the indoor unit, outdoor unit, and electric shutters, and the fresh air fan does not refrigerate, and use the natural cold source to the maximum extent to reduce power consumption; after a fire or accident (combustible gas concentration is greater than 1%), turn on the fresh air fan, ventilator, and electric shutters, close the indoor unit, outdoor unit, electric adjustable fire damper A and electric adjustable fire damper B, and the fresh air fan does not refrigerate but only blows out air, completely eliminating harmful gases in the cabin and foundation to ensure the safety of repair personnel. The fresh air sent by the fresh air fan can be directly connected to the heat dissipation duct of the battery pack through the floor duct and the electric adjustable fire damper A.

[0031] When the humidity in the prefabricated cabin needs to be precisely controlled or the humidity does not meet the indoor equipment operation requirements (indoor humidity > 70%), the controller turns on the fresh air fan and electric adjustable fire damper A according to the humidity sensor in the cabin, and the electric blinds and electric adjustable fire damper B are closed. The fresh air fan inhales the low-temperature air in the foundation, and after cooling and dehumidification by the fresh air fan, it is injected into the room through the floor air duct to keep the humidity in the cabin stable; when the temperature in the foundation is too high (the temperature in the foundation is greater than 40°C), the controller turns on the fresh air fan and electric blinds according to the temperature sensor A in the foundation, and the electric adjustable fire damper A and electric adjustable fire damper B are closed. The fresh air fan does not cool, and the hot air in the foundation is directly discharged to the outside through the electric blinds until the temperature in the foundation returns to normal.

[0032] The indoor unit automatically and continuously adjusts the operating frequency of the indoor unit according to temperature sensor A, and then makes a secondary correction to its frequency according to temperature sensor B to ensure that the cabin temperature is at the set value; the fresh air fan automatically and continuously adjusts the operating frequency of the fresh air fan according to temperature sensors A and B, and then makes a secondary correction to its frequency according to the humidity sensor to ensure that the basic temperature and the cabin temperature and humidity are at the set values.

Claims

1. An air conditioning and ventilation system for an electrochemical energy storage prefabricated cabin, comprising a cabin body, a roof and a foundation, wherein the roof is a cavity structure and the foundation is an inner hollow space; characterized in that It also includes an indoor unit, an outdoor unit, a fresh air fan, a ventilator, electric blinds and ventilation blinds; a floor air duct is arranged in the cabin, the floor air duct is connected to the roof cavity through the air duct, and ventilation blinds are respectively arranged on the left and right sides of the inner side of the outer eaves of the roof cavity; the indoor unit is arranged above the cabin; the fresh air fan is placed in the foundation and close to the bottom of the cabin, and its air outlet is connected to the floor air duct; the ventilator is embedded and installed at a high position on the cabin wall; the indoor unit and the fresh air fan share an outdoor unit, and the three are connected by a refrigerant pipe; a temperature sensor and a humidity sensor are arranged in the cabin, and a temperature sensor is arranged in the foundation; the floor air duct is connected to the cabin space and the roof cavity through the electric adjustable fire dampers A and B respectively, the side outer wall of the floor air duct is installed with electric blinds to connect with the outdoors, and the bottom of the floor air duct is connected to the air outlet of the fresh air fan.

2. The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin according to claim 1 is characterized in that: Combustible gas concentration sensors are provided inside the cabin and inside the foundation.

3. The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin according to claim 2 is characterized in that: The combustible gas concentration sensors are respectively arranged inside the cabin and on the top of the foundation.

4. The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin according to claim 3 is characterized in that: The indoor unit, outdoor unit, fresh air blower, ventilator, electric adjustable fire damper, temperature sensor, humidity sensor, combustible gas concentration sensor and electric shutters are all electrically connected to the controller and controlled by it.

5. The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin according to claim 4 is characterized in that: The controller is arranged on the outer wall of the cabin.

6. The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin according to claim 1 is characterized in that: The outdoor unit is arranged outside the cabin and close to the outer wall.

7. The air conditioning and ventilation system for the electrochemical energy storage prefabricated cabin according to claim 1 is characterized in that: The ventilator is a wall-type fan with a check valve and a protective cover.

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