Distributed ventilation and air conditioning system for subway station equipment management room

Abstract

The invention relates to the technical field of urban rail transit, in particular to a distributed ventilation and air conditioning system for a subway station equipment management room. The distributed ventilation and air-conditioning system for the equipment management room of the subway station specifically comprises an air-conditioning machine room, wherein the air-conditioning machine room is positioned between adjacent equipment rooms; cabinet air conditioners matched with the equipment rooms in number are arranged in the air-conditioning machine room; the water return pipe is provided with a temperature sensor and a control valve, the temperature sensor feeds back the actual water return temperature to the controller, and the controller controls the opening degree of the control valve by comparing the actual water return temperature with the set water return temperature so as to adjust the water amount. The equipment room is provided with a temperature and humidity sensor, the temperature and humidity sensor feeds back the actual temperature and humidity in the equipment room to the controller, and the controller controls the frequency of the fan frequency converter by comparing the actual temperature of the room with the set temperature so as to adjust the air supply amount. The method has the advantages of improving the ceiling elevation of the station and independently and automatically adjusting the temperature of the equipment room.

Description

Technical Field

[0001] The invention relates to the technical field of urban rail transit, and in particular to a decentralized ventilation and air-conditioning system for equipment management rooms in subway stations. Background Art

[0002] There are a large number of heat-generating equipment in the equipment management room of the subway station. Air conditioners need to be installed to remove the residual heat of the equipment and keep the electrical equipment within the temperature range of safe operation. At present, most stations adopt the air conditioning scheme of sharing a set of cabinet air conditioners for rooms with the same set temperature. The cabinet air conditioner is placed in the environmental control room, and supplies air to the rooms it serves and collects return air through air ducts. The return air is sent to the cabinet air conditioner for reprocessing. This arrangement has the following problems: 1) The air supply volume of each room is adjusted by the herringbone regulating valve of the double-layer louver air outlet or the manual air volume regulating valve on the branch pipe, but the level of on-site adjustment is uneven, resulting in some rooms The temperature is too high and some rooms are too cold. 2) In the early stage of the station opening, the heat generation of the equipment cannot reach the calculated long-term heat generation, resulting in excessive actual cooling capacity of the equipment and energy waste. 3) For small systems with large heat generation, the size of the air duct is large, and the amount of air duct usage is also increased; at the same time, the large pipeline size makes the overall pipeline height of the station equipment area corridor and the environmental control room lower.

[0003] Therefore, in view of the deficiencies in the prior art, a decentralized ventilation and air-conditioning system for equipment management rooms in a subway station is provided. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a decentralized ventilation and air-conditioning system for equipment management rooms in subway stations, aiming to solve the problems of different operating temperatures in equipment rooms and low pipeline heights.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A decentralized ventilation and air conditioning system for equipment management rooms in a subway station, comprising: a plurality of cabinet air conditioners and a plurality of air conditioning machine rooms;

[0007] The air-conditioning room is located between adjacent equipment rooms, and the cabinet air conditioners matching the number of equipment rooms are placed in the air-conditioning room;

[0008] The cabinet air conditioner comprises an air conditioner body, an air supply duct, an air return duct, a water return duct, a fan inverter and a controller, and the air conditioner body is connected to the equipment room through the air supply duct and the air return duct;

[0009] The return water pipe is provided with a temperature sensor and a control valve, the controller is connected to the temperature sensor, the temperature sensor feeds back the actual return water temperature to the controller, and the controller controls the opening of the control valve to adjust the water volume by comparing the actual return water temperature with the set return water temperature;

[0010] The equipment room is provided with a temperature and humidity sensor, and the controller is connected to the temperature and humidity sensor. The temperature and humidity sensor feeds back the actual temperature and humidity in the equipment room to the controller. The controller controls the frequency of the fan inverter to adjust the air supply volume by comparing the actual temperature of the room with the set temperature.

[0011] As a further improvement of the technical solution of the present invention, the actual return water temperature includes lower than the set return water temperature and higher than the set return water temperature;

[0012] When the actual return water temperature is lower than the set return water temperature, the actual heat generation of the equipment room is small, and the controller sends an instruction to reduce the opening of the control valve, thereby reducing the amount of chilled water circulating in the air conditioner body;

[0013] When the actual return water temperature is higher than the set return water temperature, the actual heating value of the equipment room is large, and the controller sends an instruction to increase the opening of the control valve to increase the circulating water volume of the chilled water of the air conditioner body.

[0014] As a further improvement of the technical solution of the present invention, the actual temperature and humidity of the equipment room includes lower than the set temperature and humidity and higher than the set temperature and humidity;

[0015] When the actual temperature and humidity are lower than the set temperature and humidity, the actual heat generation of the equipment room is small, and the controller sends an instruction to reduce the frequency of the fan inverter and reduce the air supply volume of the air conditioner body;

[0016] When the actual temperature and humidity are higher than the set temperature and humidity, the actual heat generation of the equipment room is large, and the controller sends an instruction to increase the frequency of the fan inverter to increase the air supply volume of the air conditioner body.

[0017] As a further improvement of the technical solution of the present invention, the supply air duct is located at the top of the equipment room, and the return air duct is located on the side wall of the equipment room, and its height is lower than the supply air duct. The supply air duct delivers cold air to the equipment room and the return air is collected by the return air duct.

[0018] As a further improvement of the technical solution of the present invention, it also includes an air-conditioning water collector, and the air-conditioning water collector is connected to the air-conditioning body through the return pipe.

[0019] As a further improvement of the technical solution of the present invention, it also includes an air-conditioning water distributor, and the cabinet air conditioner also includes a water supply pipe, and the air-conditioning water distributor is connected to the air-conditioning body through the water supply pipe.

[0020] As a further improvement of the technical solution of the present invention, the cabinet air conditioner is arranged close to the wall of the equipment room that needs cooling.

[0021] As a further improvement of the technical solution of the present invention, the control valve is an electric two-way valve.

[0022] As a further improvement of the technical solution of the present invention, the cabinet air conditioners all adopt variable frequency control.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the decentralized ventilation and air-conditioning system for the equipment management room of the subway station of the present invention, the centralized full-air one-time return air system is improved into a decentralized ventilation and air-conditioning system. In the decentralized ventilation and air-conditioning system, the air-conditioning room is located between adjacent equipment rooms, and two sets of cabinet air conditioners are placed in the air-conditioning room. Each equipment room corresponds to a set of cabinet air conditioners. The cabinet air conditioners are arranged close to the equipment room. Compared with the centralized air conditioners set in the environmental control room, the air transmission energy consumption and the size of the aisle air duct are reduced, and the scale of the air duct is reduced to the greatest extent. The air duct does not cross the room, which can save the height space of the station and improve the elevation of the station ceiling decoration. At the same time, the equipment can be independently adjusted or switched according to the specific conditions of each room, with strong adjustability, and higher energy efficiency than the full-air one-time return air system, so as to achieve the purpose of energy saving. The decentralized ventilation and air-conditioning system for the equipment management room of the subway station has the characteristics of improving the station ceiling elevation and independently and automatically adjusting the temperature of the equipment room. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0026] Figure 1 It is a structural schematic diagram of a decentralized ventilation and air-conditioning system for equipment management rooms in a subway station according to the present invention;

[0027] Figure 2 It is a schematic diagram of a water system in a decentralized ventilation and air-conditioning system in an equipment management room of a subway station according to the present invention.

[0028] In the figure:

[0029] 1. Cabinet air conditioner; 11. Air conditioner body; 12. Air supply duct; 13. Return air duct; 14. Return water pipe; 141. Temperature sensor; 142. Control valve; 15. Water supply pipe;

[0030] 2. Air-conditioning room;

[0031] 3. Equipment room; 31. Temperature and humidity sensor;

[0032] 4. Air conditioning water collector; 5. Air conditioning water distributor. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0034] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0035] Reference Figure 1 to Figure 2 , a decentralized ventilation and air conditioning system for equipment management rooms in a subway station, comprising: a plurality of cabinet air conditioners 1 and a plurality of air conditioning machine rooms 2;

[0036] In one embodiment, the air-conditioning room 2 is located between adjacent equipment rooms 3, and the number of cabinet air conditioners 1 adapted to the number of equipment rooms 3 is placed in the air-conditioning room 2, so as to reduce the construction area of ​​the air-conditioning room 2, and the air-conditioning room 2 needs to ensure that the cabinet air conditioners 1 have sufficient maintenance space. Preferably, in order to better adapt to the room load at each stage of station operation, the cabinet air conditioners 1 are all controlled by variable frequency.

[0037] Among them, the centralized full air one-time return air system is improved into a decentralized ventilation and air conditioning system. In the decentralized ventilation and air conditioning system, the air conditioning room 2 is located between adjacent equipment rooms 3. Two sets of cabinet air conditioners 1 are placed in the air conditioning room 2. Each equipment room 3 corresponds to a set of cabinet air conditioners 1. The cabinet air conditioners 1 are arranged close to the equipment room 3. Compared with the centralized air conditioners set in the environmental control room, the air transmission energy consumption and the size of the aisle air duct are reduced, and the air duct scale is reduced to the greatest extent. The air duct does not cross the room, which can save the station height space and improve the station ceiling decoration elevation; at the same time, the equipment can be independently adjusted or switched according to the specific conditions of each room, with strong adjustability. The parameters of the cabinet air conditioner 1 can be adjusted according to the actual heat generation of the equipment room 3. It has higher energy efficiency than the full air one-time return air system, and achieves the purpose of energy saving. The decentralized ventilation and air conditioning system of the equipment management room of the subway station has the characteristics of increasing the station ceiling elevation and independently and automatically adjusting the temperature of the equipment room 3.

[0038] In one embodiment, the cabinet air conditioner 1 includes an air conditioner body 11, an air supply duct 12, a return air duct 13, a return water duct 14, a fan inverter and a controller. The air conditioner body 11 is connected to the equipment room 3 through the air supply duct 12 and the return air duct 13. The controller automatically collects room temperature and return water temperature signals, and can automatically adjust the electric two-way valve of the fan inverter and the return water duct 14 to ensure that the actual cooling capacity of the room can match the actual load in the room. Taking a conventional two-story subway station as an example, since the cabinet air conditioner 1 adopts variable frequency operation and the cabinet air conditioner 1 is arranged close to the service room, the use of this decentralized ventilation and air conditioning system greatly reduces the annual power consumption; at the same time, due to the reduction in the size of the air duct, the initial investment in the air duct is effectively reduced. Preferably, the air conditioner body 11 and its controller are placed in the air conditioning room 2, and the return water duct 14 does not enter the equipment room 3, which will not affect the safe operation of the equipment.

[0039] In one embodiment, the return water pipe 14 is provided with a temperature sensor 141 and a control valve 142. The controller is connected to the temperature sensor 141. The temperature sensor 141 feeds back the actual return water temperature to the controller. The controller controls the opening of the control valve 142 to adjust the water volume by comparing the actual return water temperature with the set return water temperature. The actual return water temperature includes lower than the set return water temperature and higher than the set return water temperature. When the actual return water temperature is lower than the set return water temperature, the actual heat generation of the equipment room 3 is small, and the controller sends an instruction to reduce the opening of the control valve 142 to reduce the circulating water volume of the chilled water of the air conditioner body 11. When the actual return water temperature is higher than the set return water temperature, the actual heat generation of the equipment room 3 is large, and the controller sends an instruction to increase the opening of the control valve 142 to increase the circulating water volume of the chilled water of the air conditioner body 11. Preferably, the control valve 142 is an electric two-way valve.

[0040] In one embodiment, the equipment room 3 is provided with a temperature and humidity sensor 31, and the controller is connected to the temperature and humidity sensor 31. The temperature and humidity sensor 31 feeds back the actual temperature and humidity in the equipment room 3 to the controller, and the controller controls the frequency of the fan inverter to adjust the air supply by comparing the actual temperature of the room with the set temperature. The actual temperature and humidity of the equipment room 3 include lower than the set temperature and humidity and higher than the set temperature and humidity; when the actual temperature and humidity are lower than the set temperature and humidity, the actual heat generation of the equipment room 3 is small, and the controller sends a command to reduce the frequency of the fan inverter and reduce the air supply of the air conditioner body 11; when the actual temperature and humidity are higher than the set temperature and humidity, the actual heat generation of the equipment room 3 is large, and the controller sends a command to increase the frequency of the fan inverter and increase the air supply of the air conditioner body 11.

[0041] In one embodiment, the decentralized ventilation and air-conditioning system further includes an air-conditioning water collector 4 and an air-conditioning water distributor 5. The air-conditioning water collector 4 is connected to the air-conditioning body 11 via a return pipe 14. The cabinet air conditioner 1 further includes a water supply pipe 15. The air-conditioning water distributor 5 is connected to the air-conditioning body 11 via a water supply pipe 15.

[0042] In one embodiment, the supply air duct 12 is located at the top of the equipment room 3, the return air duct 13 is below the supply air duct 12, and the return air duct 13 is located on the side wall of the equipment room 3. The supply air duct 12 delivers cold air to the equipment room 3 and the return air is collected by the return air duct 13.

[0043] In one embodiment, the cabinet air conditioner 1 is installed close to the wall of the equipment room 3 that needs cooling, which reduces the air transportation energy consumption and the size of the aisle air duct compared to a centralized air conditioner installed in an environmental control room.

[0044] For other contents of the decentralized ventilation and air-conditioning system for equipment management rooms in subway stations described in the present invention, please refer to the prior art and will not be described in detail here.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A decentralized ventilation and air conditioning system for equipment management rooms in subway stations, characterized in that: include: Several cabinet air conditioners and several air conditioning rooms; The air-conditioning room is located between adjacent equipment rooms, and the cabinet air conditioners matching the number of equipment rooms are placed in the air-conditioning room; The cabinet air conditioner comprises an air conditioner body, an air supply duct, an air return duct, a water return duct, a fan inverter and a controller, and the air conditioner body is connected to the equipment room through the air supply duct and the air return duct; The return water pipe is provided with a temperature sensor and a control valve, the controller is connected to the temperature sensor, the temperature sensor feeds back the actual return water temperature to the controller, and the controller controls the opening of the control valve to adjust the water volume by comparing the actual return water temperature with the set return water temperature; The equipment room is provided with a temperature and humidity sensor, and the controller is connected to the temperature and humidity sensor. The temperature and humidity sensor feeds back the actual temperature and humidity in the equipment room to the controller. The controller controls the frequency of the fan inverter to adjust the air supply volume by comparing the actual temperature of the room with the set temperature.

2. A decentralized ventilation and air conditioning system for equipment management rooms in subway stations according to claim 1, characterized in that: The actual return water temperature includes lower than the set return water temperature and higher than the set return water temperature; When the actual return water temperature is lower than the set return water temperature, the actual heat generation of the equipment room is small, and the controller sends an instruction to reduce the opening of the control valve, thereby reducing the amount of chilled water circulating in the air conditioner body; When the actual return water temperature is higher than the set return water temperature, the actual heating value of the equipment room is large, and the controller sends an instruction to increase the opening of the control valve to increase the circulating water volume of the chilled water of the air conditioner body.

3. A decentralized ventilation and air conditioning system for equipment management rooms in a subway station according to claim 1, characterized in that: The actual temperature and humidity of the equipment room include those lower than the set temperature and humidity and those higher than the set temperature and humidity; When the actual temperature and humidity are lower than the set temperature and humidity, the actual heat generation of the equipment room is small, and the controller sends an instruction to reduce the frequency of the fan inverter and reduce the air supply volume of the air conditioner body; When the actual temperature and humidity are higher than the set temperature and humidity, the actual heat generation of the equipment room is large, and the controller sends an instruction to increase the frequency of the fan inverter to increase the air supply volume of the air conditioner body.

4. A decentralized ventilation and air conditioning system for equipment management rooms in a subway station according to claim 1, characterized in that: The air supply duct is located at the top of the equipment room, the air return duct is located at the side wall of the equipment room, the height of the air return duct is lower than the air supply duct, and the air supply duct delivers cold air to the equipment room and the return air is collected by the air return duct.

5. The decentralized ventilation and air-conditioning system for equipment management rooms in subway stations according to claim 1 is characterized in that: It also includes an air-conditioning water collector, which is connected to the air-conditioning body through the water return pipe.

6. A decentralized ventilation and air-conditioning system for equipment management rooms in a subway station according to claim 1 or 5, characterized in that: It also includes an air-conditioning water distributor, and the cabinet air-conditioner also includes a water supply pipe, and the air-conditioning water distributor is connected to the air-conditioning body through the water supply pipe.

7. The decentralized ventilation and air conditioning system for equipment management rooms in subway stations according to claim 1 is characterized in that: The cabinet air conditioner is arranged close to the wall of the equipment room that needs cooling.

8. The decentralized ventilation and air conditioning system for equipment management rooms in subway stations according to claim 1, characterized in that: The control valve is an electric two-way valve.

9. The decentralized ventilation and air conditioning system for equipment management rooms in subway stations according to claim 1, characterized in that: The cabinet air conditioners all adopt frequency conversion control.

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