Central air-conditioning control system of power distribution room

Abstract

The utility model relates to a central air conditioner control system of a power distribution room, which comprises a plurality of central air conditioners respectively arranged in different power distribution rooms, and each central air conditioner comprises a water pan; the plurality of water level detection sensors are respectively arranged at preset positions of water receiving trays of a plurality of central air conditioners; the controller is connected to the plurality of water level detection sensors; the alarm device is connected to the controller; and the switching power supply is connected to the water level detection sensor. When the controller judges that the water outlet of the water pan may be blocked, an alarm signal is sent out through the alarm device, so that patrol personnel can know that water is accumulated in the water pan of the central air conditioner in time and deal with the water in time, and the accumulated water in the water pan is prevented from flowing to the ground of a power distribution room. And therefore, the density busbar and the transformer are prevented from being damaged due to short circuit.

Description

Technical Field

[0001] The present application relates to the technical field of power distribution rooms, and in particular to a central air conditioning control system for a power distribution room. Background Technology

[0002] The distribution room refers to an indoor distribution site with low-voltage loads, which mainly distributes electricity to low-voltage users. It is equipped with medium-voltage incoming lines (a small number of outgoing lines may be provided), distribution transformers and low-voltage distribution devices. Facilities for equipment with voltage levels of 10kV and below are divided into high-voltage distribution rooms and low-voltage distribution rooms. High-voltage distribution rooms generally refer to 6kV-10kV high-voltage switch rooms; low-voltage distribution rooms generally refer to 400V distribution rooms with 20kV or 35kV station transformer outgoing lines. The entry introduces the composition, design specifications, safety system, etc. of the distribution room.

[0003] In order to keep the temperature in the distribution room within an appropriate range, a central air conditioner is usually installed in the distribution room to adjust the temperature in the distribution room. The central air conditioner is used to collect and discharge the condensed water generated in the air conditioning system. The existing central air conditioning water trays in each distribution room rely on manual on-site inspections to check whether there are leaks or whether the water in the air conditioning water tray is drained smoothly. If the drain outlet of the central air conditioning water tray is blocked, the water tray will quickly fill up with water and flow directly to the ground of the distribution room. If no one finds it and handles it in time, it will flow directly into the cable interlayer and drip onto the dense busbar and transformer, which will cause the dense busbar and transformer to short-circuit and explode, affecting production and causing economic losses to the company. Contents of utility model

[0004] In view of the above problems, this application provides a central air conditioning control system for a power distribution room, which solves the problem that the water receiving pan in the air conditioning system of the existing power distribution room cannot be discovered and handled in time through manual on-site inspection, resulting in the accumulated water flowing into the cable interlayer.

[0005] To achieve the above purpose, the inventor provides a central air-conditioning control system for a power distribution room, comprising:

[0006] Several central air conditioners, each of which is arranged in different power distribution rooms, and each of which includes a water receiving tray;

[0007] Several water level detection sensors, wherein the plurality of water level detection sensors are respectively arranged at preset positions of water receiving pans of a plurality of central air conditioners;

[0008] A controller, the controller being connected to the plurality of water level detection sensors;

[0009] An alarm device, the alarm device is connected to the controller;

[0010] A switching power supply, wherein the switching power supply is connected to the water level detection sensor.

[0011] In some embodiments, the controller is connected to the control ends of the plurality of central air conditioners.

[0012] In some embodiments, the alarm device includes an alarm horn.

[0013] In some embodiments, the alarm horn is arranged in the production DCS room.

[0014] In some embodiments, the alarm device includes an alarm indicator light.

[0015] In some embodiments, the controller is a programmable logic controller PLC.

[0016] In some embodiments, a display screen is further included, and the display screen is connected to the controller.

[0017] In some embodiments, the display screen is a touch screen.

[0018] In some embodiments, a reset button is further included, and the reset button is connected to the controller.

[0019] Different from the prior art, in the above technical solution, central air conditioners are configured in each power distribution room to adjust the temperature in the power distribution room. A water level detection sensor is arranged at a preset position in the water receiving tray of the central air conditioner in each power distribution room, and a switching power supply is used to provide working power for the water level detection sensor. The water level detection sensor is used to detect whether the water level in the water receiving tray of the central air conditioner in each power distribution room reaches the preset position. When the preset position is reached, the controller determines that there may be a problem that the drain outlet of the water receiving tray is blocked. The controller sends an alarm signal through the alarm device, so that the inspection personnel can timely know that the water receiving tray of the central air conditioner has accumulated water and can timely handle it, avoiding the accumulated water in the water receiving tray flowing to the ground of the power distribution room, and further preventing the accumulated water from dripping onto the dense busbar and transformer, and preventing the dense busbar and transformer from being short-circuited and damaged due to this.

[0020] The above relevant description of the utility model content is only an overview of the technical solution of the present application. In order to enable those of ordinary skill in the art to more clearly understand the technical solution of the present application, and thus can be implemented according to the content recorded in the description and the drawings, and in order to make the above objects, other objects, features and advantages of the present application more easily understood, the following is described in conjunction with the specific embodiments and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are only used to illustrate the principles, implementation methods, applications, features and effects of the specific embodiments and other related contents of the present application, and should not be considered as a limitation to the present application.

[0022] In the accompanying drawings of the specification:

[0023] Figure 1 It is a schematic structural diagram of a central air-conditioning control system for the power distribution room described in the specific implementation manner;

[0024] Figure 2 It is another schematic structural diagram of a central air-conditioning control system for the power distribution room described in the specific implementation manner;

[0025] Figure 3 It is another schematic structural diagram of a central air-conditioning control system for the power distribution room described in the specific implementation manner;

[0026] Figure 4 It is a schematic structural diagram of a display screen described in the specific implementation manner;

[0027] Figure 5 It is a schematic circuit principle diagram of a central air-conditioning control system for the power distribution room described in the specific implementation manner.

[0028] The descriptions of the reference numerals involved in the above-mentioned various drawings are as follows:

[0029] 110, central air-conditioning;

[0030] 111, water receiving tray;

[0031] 120, water level detection sensor;

[0032] 130, controller;

[0033] 140, alarm device;

[0034] 141, alarm horn;

[0035] 142, alarm indicator light;

[0036] 150, switching power supply;

[0037] 160, display screen;

[0038] 170, reset button. Specific implementation manner

[0039] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, the following is a detailed description in combination with the listed specific examples and accompanied by drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only used as examples and cannot be used to limit the protection scope of this application.

[0040] References to "embodiments" in this application mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0041] Unless otherwise defined, the meanings of technical terms used in this application are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of relevant terms in this application is only for describing specific embodiments and is not intended to limit this application.

[0042] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: the existence of A, the existence of B, and the simultaneous existence of A and B. In addition, the character " / " in this application generally represents an "or" logical relationship between the associated objects before and after.

[0043] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary, or sequential relationships between these entities or operations.

[0044] Without further limitation, in this application, the use of "including", "comprising", "having", or other similar expressions in a statement is intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product including the said elements, so that a process, method, or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method, or product.

[0045] The same as the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the number itself; expressions such as "above", "below", "within", etc. are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0046] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiments or drawings. It is only for the convenience of describing the specific embodiments of the present application or for the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0047] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0048] Please refer to Figure 1 , this embodiment provides a central air conditioner 110 control system for a power distribution room, including:

[0049] Several central air conditioners 110, the several central air conditioners 110 are respectively arranged in different power distribution rooms, and the central air conditioner 110 includes a water receiving tray 111;

[0050] Several water level detection sensors 120, the several water level detection sensors 120 are respectively arranged at preset positions of the water receiving trays 111 of the several central air conditioners 110;

[0051] A controller 130, the controller 130 is connected to the several water level detection sensors 120;

[0052] An alarm device 140, the alarm device 140 is connected to the controller 130;

[0053] A switching power supply 150, the switching power supply 150 is connected to the water level detection sensors 120.

[0054] By configuring central air conditioners 110 in each power distribution room to adjust the temperature in the power distribution room, a water level detection sensor 120 is set at a preset position in the water receiving tray 111 of the central air conditioner 110 in each power distribution room, and a switching power supply 150 provides working power for the water level detection sensor 120. The water level detection sensor 120 is used to detect whether the water level in the water receiving tray 111 of the central air conditioner 110 in each power distribution room reaches the preset position. When it reaches the preset position, the controller 130 determines that there may be a problem that the drain outlet of the water receiving tray 111 is blocked. The controller 130 sends an alarm signal through the alarm device 140, so that the inspection personnel can timely know that there is water accumulation in the water receiving tray 111 of the central air conditioner 110 and deal with it in time, avoiding the accumulated water in the water receiving tray 111 flowing to the ground of the power distribution room, and further preventing the accumulated water from dripping onto the dense busbar and transformer, and preventing the dense busbar and transformer from being short-circuited and damaged due to this.

[0055] Among them, the water level detection sensor 120 adopts a normally open sensor. When the water level in the water receiving tray 111 reaches the water level detection sensor 120, the water level detection sensor 120 moves from the normally open point to the closed state and transmits a signal to the controller 130.

[0056] The alarm device 140 is controlled by an intermediate relay. When the controller 130 does not detect through the water level detection sensor 120 that the water accumulation in the water receiving tray 111 reaches the preset position, the controller 130 disconnects the connection between the alarm device 140 and the power supply through the intermediate relay, so that the alarm device 140 does not work. When the controller 130 detects through the water level detection sensor 120 that the water accumulation in the water receiving tray 111 reaches the preset position, the controller 130 connects the alarm device 140 to the power supply through the intermediate relay, so that the alarm device 140 works and sends an alarm signal.

[0057] In some embodiments, the controller 130 is connected to the control terminals of the plurality of central air conditioners 110. The connection to the control terminals of each central air conditioner 110 can be achieved through the controller 130, so as to control the turning on or off of each central air conditioner 110. When the controller 130 detects through the water level detection sensor 120 that the accumulated water in the water receiving tray 111 of a certain central air conditioner 110 reaches a preset position and the accumulated water is not processed in time for a period of time, that is, when it is continuously detected for a period of time that the accumulated water in the water receiving tray 111 of a certain central air conditioner 110 reaches the preset position, the controller 130 controls the corresponding central air conditioner 110 to turn off, so as to avoid the continuous increase of the accumulated water in the water receiving tray 111 due to the continuous operation of the central air conditioner 110. Among them, the control of the central air conditioner 110 by the controller 130 is also carried out through an intermediate relay. Under normal circumstances, the intermediate relay between the central air conditioner 110 and the working power supply is in a closed state. At this time, the working power supply normally supplies power to the central air conditioner 110. When the controller 130 needs the central air conditioner 110 to stop working, the controller 130 only needs to disconnect the intermediate relay between the central air conditioner 110 and the working power supply, so that the working power supply stops supplying power to the central air conditioner 110, and then the central air conditioner 110 stops working.

[0058] Please refer to Figure 2 In some embodiments, the alarm device 140 includes an alarm horn 141. By emitting an alarm sound through the alarm horn 141, relevant personnel can receive the alarm signal in time and then process it in time. Among them, the alarm horn 141 is arranged in the production DCS room. The DCS room is the control room of the Distributed Control System, which is an important place for monitoring and controlling industrial processes. By arranging the alarm horn 141 in the production DCS room, when the water level in the water receiving tray 111 is detected to be too high, after an alarm signal is generated through the alarm horn 141, the staff in the production DCS room can receive the signal in time and then process it.

[0059] In some embodiments, a communication module is further included. The communication module is connected to the controller 130 and establishes a communication connection with the communication terminal of the patrol personnel through the communication module. When the controller 130 detects through the water level sensor that the water level in the water receiving tray 111 reaches the preset position, an alarm signal is sent to the communication terminal of the patrol personnel through the communication module to remind the patrol personnel, so that the patrol personnel can process it in time. Among them, the communication terminal can be a walkie-talkie, a mobile phone or a PAD, etc. The communication module can be a Bluetooth module or a WiFi module, etc.

[0060] Please refer to Figure 2, in some embodiments, the alarm device 140 includes an alarm indicator light 142. By providing the alarm indicator light 142, the controller 130 can also emit an alarm signal through the alarm indicator light 142. When the alarm indicator light 142 lights up or changes from green to red, relevant personnel can know the water accumulation situation in the water receiving tray 111 through the change of the alarm indicator light 142. Among them, the number of alarm indicator lights 142 can be set to be the same as the number of water level detection sensors 120 and correspond to the water level detection sensors 120 one by one. When a certain water level detection sensor 120 detects that the water accumulation in the water receiving tray 111 reaches a preset position, the corresponding alarm indicator light 142 emits an alarm signal, and relevant staff can know which water receiving tray 111 in which distribution room has excessive water accumulation based on the alarm signal emitted by the alarm indicator light 142, and then process the water receiving tray 111 in that distribution room.

[0061] In some embodiments, the controller 130 is a programmable logic controller PLC. The programmable logic controller PLC is a digital computing operation electronic system specially designed for application in industrial environments. It uses a programmable memory to store instructions for performing operations such as logical operations, sequential control, timing, counting, and arithmetic operations inside it, and controls various types of mechanical equipment or production processes through digital or analog inputs and outputs. In other embodiments, a computer can also be used as the controller 130.

[0062] Please refer to Figure 3 , in some embodiments, it further includes a display screen 160, and the display screen 160 is connected to the controller 130. As Figure 4 shown, the water level situation in the water receiving tray 111 of the central air conditioner 110 in each distribution room is displayed through the display screen 160. When the alarm device 140 emits an alarm signal, relevant staff can view through the display screen 160 which water receiving tray 111 in which distribution room has a problem. In some embodiments, the display screen 160 is a touch screen.

[0063] Please refer to Figure 3 , in some embodiments, it further includes a reset button 170, and the reset button 170 is connected to the controller 130. By configuring the reset button 170, after the patrol personnel receive the alarm signal emitted by the alarm device 140, they can eliminate the alarm through the reset button 170.

[0064] A control system for the central air conditioner 110 in a distribution room, the electrical components required include: one water level detection sensor 120 in each distribution room, some wires and cables, terminal blocks, one controller 130, one touch screen, one alarm horn 141, one alarm indicator light 142, a switching power supply 150, three circuit breakers, some intermediate relays, and one reset button 170.

[0065] As Figure 5 shown, the PLC is the controller 130, which is a programmable logic controller with the model number S7-200 CN; the circuit breaker QF1 is the power switch for controlling the switching power supply 150, the circuit breaker QF2 is the power switch for the controller 130, and the circuit breaker QF3 is the power switch for controlling the alarm indicator light 142 and the alarm horn 141; UR is the switching power supply 150, and the switching power supply 150 rectifies AC220V into a DC24V power supply to provide power to the touch screen and the water level detection sensor 120; BL1 is the alarm horn 141, and HL1 is the alarm indicator light 142; SQ1-SQ10 are the water level detection sensors 120 for detecting the water level in the air conditioner water receiving trays 111 of each distribution room, and SB1 is the reset button 170 for eliminating the alarm; HIM is the display screen 160, which is a touch screen; the intermediate relay KA01 is the relay for controlling the air conditioner alarm indicator light, the intermediate relay KA02 is for controlling the alarm horn 141, and the intermediate relay KA03 is for the air conditioner water receiving tray 111 to have excessive water accumulation and the alarm timeout, and it interlocks to stop the corresponding central air conditioner 110.

[0066] If the drainage of the air conditioner water receiving tray 111 in any distribution room is blocked and the water level rises to the water level detection sensor 120, the water level detection sensor 120 will actuate and close from the normally open point, transmit the signal to the PLC, and the PLC will make an alarm output to the alarm indicator light and the horn according to the program logic judgment. People can view the alarm screen on the touch screen to quickly find out which distribution room's air conditioner water receiving tray 111 has abnormal water accumulation and arrange for handling in time to avoid equipment accidents; this system also has a function that if the air conditioner water receiving tray 111 has excessive water accumulation and the detection alarm times out after 30 minutes, it will automatically interlock to stop the corresponding central air conditioner 110 to prevent the air conditioner water from continuously flowing out of the water receiving tray 111 onto the distribution room floor and even causing equipment water ingress and damage.

[0067] Finally, it should be noted that although the above embodiments have been described in the text of the specification and the drawings of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application and using the content recorded in the text of the specification and the drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.

Claims

1. A central air conditioning control system for a power distribution room, characterized in that: include: A plurality of central air conditioners, each of which is arranged in different power distribution rooms, and each of which comprises a water receiving pan; A plurality of water level detection sensors, wherein the plurality of water level detection sensors are respectively arranged at preset positions of water receiving pans of a plurality of central air conditioners; A controller, wherein the controller is connected to the plurality of water level detection sensors; an alarm device, the alarm device being connected to the controller; A switching power supply is connected to the water level detection sensor.

2. The central air conditioning control system of the power distribution room according to claim 1, characterized in that: The controller is connected to the control ends of the plurality of central air conditioners.

3. The central air conditioning control system of the power distribution room according to claim 1, characterized in that: The alarm device comprises an alarm horn.

4. The central air conditioning control system of the power distribution room according to claim 3, characterized in that: The alarm horn is arranged in the production DCS room.

5. The central air conditioning control system of the power distribution room according to claim 1, characterized in that: The alarm device comprises an alarm indicator light.

6. The central air conditioning control system of the power distribution room according to claim 1, characterized in that: The controller is a programmable logic controller (PLC).

7. The central air conditioning control system of the power distribution room according to claim 1, characterized in that: It also includes a display screen, which is connected to the controller.

8. The central air conditioning control system of the power distribution room according to claim 7, characterized in that: The display screen is a touch screen.

9. The central air conditioning control system of the power distribution room according to claim 1, characterized in that: A reset button is also included, and the reset button is connected to the controller.

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