Cooling circulating water self-control early warning system

Abstract

The utility model discloses a cooling circulating water self-control early warning system, which comprises a cooling water tank, a cooling tower, a variable frequency constant pressure water supply unit and a programmable controller, a water tank partition wall, a temperature sensor and a water depth sensor are arranged inside the cooling water tank, an automatic water replenishing valve is arranged outside the cooling water tank, and a water tank partition wall is arranged outside the cooling water tank. The cooling tower comprises a filler heat exchange device, a ventilation cooling device and a temperature controller, the temperature controller is electrically connected with the programmable controller through a temperature sensing line, and the variable-frequency constant-pressure water supply unit comprises a pump set and a water pressure sensor. The system adopts the temperature controller, the cooling tower filler heat exchange device and the ventilation cooling device are started and stopped in order, energy is saved, consumption is reduced, meanwhile, the water depth sensor is adopted, the phenomena that a traditional buoy type is prone to clamping stagnation and control fails are reduced, and the phenomena that production is affected due to the fact that the water level is too low and cooling circulating water cannot be used or water energy is wasted due to overflowing due to the too high water level are avoided.

Description

Technical Field

[0001] The utility model relates to a cooling system, more specifically, to a cooling circulating water automatic control early warning system. Background Art

[0002] Usually, the cooling circulating water system is composed of several water pumps of the same model and specification connected in parallel. The pipeline pressure is adjusted by manually starting and stopping the pumps to achieve a better cooling effect. In the actual process, the production equipment is frequently started and stopped, and the pressure of the cooling pipeline varies greatly. The running water pump cannot automatically adjust the pressure. When the pipeline pressure is low, the cooling effect is affected. When the pipeline pressure is high, energy consumption is wasted.

[0003] At the same time, the cooling circulating water pool wall is not sealed tightly, the pool water leaks out, the circulating water pipe leaks or groundwater seeps in, the water level in the circulating water pool fluctuates, the conventional buoy water level control has low sensitivity and often gets stuck, resulting in insufficient water level and the circulating water system cannot be used normally, or the water replenishment is out of control and the water level is too high to overflow the pool, wasting water resources. Utility Model Content

[0004] Based on this, it is necessary to provide a cooling circulating water automatic control early warning system to address the above technical issues.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A cooling circulating water automatic control early warning system, characterized in that the cooling circulating water automatic control early warning system comprises a cooling water pool, a cooling tower, a variable frequency constant pressure water supply unit and a programmable controller,

[0007] The interior of the cooling water pool is provided with a water pool partition wall, a temperature sensor and a water depth sensor, the exterior of the cooling water pool is provided with an automatic water supply valve, the automatic water supply valve is connected to the cooling water pool through a first water supply pipe, the automatic water supply valve is connected to an external water supply system through a second water supply pipe, the cooling water pool is connected to an automatic drainage pump through a drainage pipe, the automatic water supply valve is electrically connected to the programmable controller through a water supply valve control line, the temperature sensor is electrically connected to the programmable controller through a temperature control line, the water depth sensor is electrically connected to the programmable controller through a water depth control line, and the automatic drainage pump is electrically connected to the programmable controller through a drainage control line.

[0008] The cooling tower comprises a filler heat exchange device, a ventilation cooling device and a temperature controller, wherein the temperature controller is electrically connected to the programmable controller via a temperature sensing line.

[0009] The variable frequency constant pressure water supply unit comprises a pump group and a water pressure sensor. The pump group is connected to the cooling water pool through a pump group water pipe. The water pressure sensor is arranged at the end of the water supply pipeline of the pump group. The pump group is electrically connected to the programmable controller through a pump group control line. The water pressure sensor is electrically connected to the programmable controller through a water pressure control line.

[0010] As a preferred embodiment of the utility model, a water supply area is provided on the left side of the pool partition wall, a water return area is provided on the right side of the pool partition wall, and the temperature sensor is arranged in the water return area.

[0011] As a preferred embodiment of the utility model, the programmable controller is connected to a human-machine interface through a human-machine control line, and the programmable controller is connected to an audio-visual warning unit through an alarm control line.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a cooling circulating water automatic control early warning system, which adopts a temperature controller to orderly start and stop the cooling tower packing heat exchange device and the ventilation cooling device, saves energy and reduces consumption. At the same time, it adopts a water depth sensor to reduce the traditional buoy type easy to get stuck and control failure, avoids the water level is too low, the cooling circulating water cannot be used and affects production, or the water level is too high to overflow and waste water energy. Through the automatic control of the programmable controller, the number of workers patrolling is reduced, and the labor cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the connection structure of the cooling circulating water automatic control early warning system of the utility model;

[0016] The markings in the figure are as follows: 1. Cooling water pool; 101. Pool partition wall; 102. Temperature sensor; 103. Automatic water supply valve; 1031. First water supply pipe; 1032. Second water supply pipe; 1033. Water supply system; 104. Automatic drainage pump; 1041. Drain pipe; 105. Water depth sensor; 2. Cooling tower; 201. Packing heat exchange device; 202. Ventilation cooling device; 203. Temperature controller; 3. Variable frequency constant pressure water supply unit element; 301, pump group; 302, water pressure sensor; 303, pump group water pipe; 4, programmable controller; 401, human-machine interface; 402, sound and light warning unit; K1, water supply valve control line; K2, temperature control line; K3, water depth control line; K4, drainage control line; K5, temperature sensor line; K6, pump group control line; K7, water pressure control line; K8, human-machine control line; K9, alarm control line; S1, water supply area; S2, return water area. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0018] like Figure 1 As shown, the cooling circulating water automatic control early warning system comprises a cooling water pool 1, a cooling tower 2, a variable frequency constant pressure water supply unit 3 and a programmable controller 4.

[0019] The interior of the cooling water pool 1 is provided with a water pool partition wall 101, a temperature sensor 102 and a water depth sensor 105. The exterior of the cooling water pool 1 is provided with an automatic water replenishment valve 103. The automatic water replenishment valve 103 is connected to the cooling water pool 1 through a first water replenishment pipe 1031. The automatic water replenishment valve 103 is connected to an external water supply system 1033 through a second water replenishment pipe 1032. The cooling water pool 1 is connected to an automatic drainage pump 104 through a drainage pipe 1041. The automatic water replenishment valve 103 is electrically connected to the programmable controller 4 through a water replenishment valve control line K1. The temperature sensor 102 is electrically connected to the programmable controller 4 through a temperature control line K2. The water depth sensor 105 is electrically connected to the programmable controller 4 through a water depth control line K3. The automatic drainage pump 104 is electrically connected to the programmable controller 4 through a drainage control line K4.

[0020] The cooling tower 2 includes a filler heat exchange device 201 , a ventilation cooling device 202 and a temperature controller 203 . The temperature controller 203 is electrically connected to the programmable controller 4 via a temperature sensing line K5 .

[0021] The variable frequency constant pressure water supply unit 3 includes a pump group 301 and a water pressure sensor 302. The pump group 301 is connected to the cooling water pool 1 through a pump group water pipe 303. The water pressure sensor 302 is arranged at the end of the water supply pipeline of the pump group 301. The pump group 301 is electrically connected to the programmable controller 4 through a pump group control line K6. The water pressure sensor 302 is electrically connected to the programmable controller 4 through a water pressure control line K7.

[0022] A water supply area S1 is disposed on the left side of the pool partition wall 101 , and a water return area S2 is disposed on the right side of the pool partition wall 101 . The temperature sensor 102 is disposed in the water return area S2 .

[0023] The programmable controller 4 is connected to a human-machine interface 401 via a human-machine control line K8, and the programmable controller 4 is connected to an acoustic and visual warning unit 402 via an alarm control line K9.

[0024] The working mode of the cooling circulation water automatic control early warning system is explained below.

[0025] The water depth sensor 105 monitors the depth of the cooling water pool 1. If the water level is lower than a preset value, the programmable controller 4 opens the automatic water replenishment valve 103 to replenish the cooling water pool 1. When the water level is higher than a preset value, the programmable controller 4 opens the automatic drainage pump 104 to drain the cooling water pool 1.

[0026] The temperature controller 203 monitors the water temperature of the return pool of the cooling tower 2. When the water temperature of the return pool is lower than the preset first temperature, the programmable controller 4 sends a signal, and the packing heat exchange device 201 and the ventilation cooling device 202 stop running. When the water temperature of the return pool is higher than the preset first temperature, the programmable controller 4 sends a signal, the packing heat exchange device 201 runs, the ventilation cooling device 202 stops, and the right return water is cooled only by the cooling tower packing heat exchange device 201 and enters the left water supply area. When the water temperature of the return pool is higher than the preset second temperature, the programmable controller 4 sends a signal, the packing heat exchange device 201 runs, the ventilation cooling device 202 runs, and the right return water is cooled by the cooling tower packing heat exchange device 201 and the ventilation cooling device 202 and enters the left water supply area.

[0027] The water pressure sensor 302 monitors the water supply pressure of the pump group 301 .

[0028] In addition, the human-machine interface 401 can display information such as the minimum / maximum safe height of the water level, the safe pressure of the pipeline, and the safe temperature of the return water, and output information such as the real-time water level of the pool, the return water temperature, and the terminal water pressure. Once a dangerous situation occurs, the sound and light warning unit 402 will sound an alarm.

[0029] The cooling circulating water automatic control early warning system has the following advantages:

[0030] 1. Adopting variable frequency constant pressure technology, the pump group starts and stops in order, saving energy and reducing consumption;

[0031] 2. Use temperature controller to start and stop cooling tower packing heat exchange device and ventilation cooling device in order to save energy and reduce consumption;

[0032] 3. Use water depth sensor to reduce the traditional buoy type easy to get stuck, control failure phenomenon, avoid the water level is too low, the cooling circulating water can not be used to affect production, or the water level is too high to overflow and waste water energy;

[0033] 4. When the water level exceeds the highest safe water level, the drainage pump will be automatically started under the instruction of the programmable controller to drain water to prevent equipment and electrical appliances from being submerged, causing equipment damage and safety accidents;

[0034] 5. When the pool water level, pipe pressure, and return water temperature are abnormal, there will be sound and light warning prompts;

[0035] 6. Automatic control through programmable controller reduces worker inspections and reduces labor costs.

[0036] Obviously, the embodiments described above are only part of the embodiments of the present application, rather than all the embodiments. The drawings provide preferred embodiments of the present application, but do not limit the patent scope of the present application.

Claims

1. A cooling circulating water automatic control early warning system, characterized in that: The cooling circulating water automatic control early warning system comprises a cooling water pool (1), a cooling tower (2), a variable frequency constant pressure water supply unit (3) and a programmable controller (4). The cooling water pool (1) is provided with a water pool partition wall (101), a temperature sensor (102) and a water depth sensor (105) inside, and an automatic water supply valve (103) is provided outside the cooling water pool (1). The automatic water supply valve (103) is connected to the cooling water pool (1) via a first water supply pipe (1031), and the automatic water supply valve (103) is connected to an external water supply system (1033) via a second water supply pipe (1032). The cooling water pool (1) is connected to an automatic water supply system (1033) via a drainage pipe (1041). The automatic water supply valve (103) is electrically connected to the programmable controller (4) via a water supply valve control line (K1), the temperature sensor (102) is electrically connected to the programmable controller (4) via a temperature control line (K2), the water depth sensor (105) is electrically connected to the programmable controller (4) via a water depth control line (K3), and the automatic water supply pump (104) is electrically connected to the programmable controller (4) via a water supply control line (K4). The cooling tower (2) comprises a filler heat exchange device (201), a ventilation cooling device (202) and a temperature controller (203). The temperature controller (203) is electrically connected to the programmable controller (4) via a temperature sensing line (K5). The variable frequency constant pressure water supply unit (3) comprises a pump group (301) and a water pressure sensor (302); the pump group (301) is connected to the cooling water pool (1) via a pump group water pipe (303); the water pressure sensor (302) is arranged at the end of the water supply pipeline of the pump group (301); the pump group (301) is electrically connected to the programmable controller (4) via a pump group control line (K6); and the water pressure sensor (302) is electrically connected to the programmable controller (4) via a water pressure control line (K7).

2. The cooling circulating water automatic control early warning system according to claim 1 is characterized in that: A water supply area (S1) is provided on the left side of the pool partition wall (101), a water return area (S2) is provided on the right side of the pool partition wall (101), and the temperature sensor (102) is arranged in the water return area (S2).

3. The cooling circulating water automatic control early warning system according to claim 1 is characterized in that: The programmable controller (4) is connected to a human-machine interface (401) via a human-machine control line (K8), and the programmable controller (4) is connected to an acoustic and visual warning unit (402) via an alarm control line (K9).

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