JPH04124994U - Cooling device for water in the water tank - Google Patents

Abstract

(57) [Summary] [Purpose] Cool water stored in a tank using a simple water sprinkler system without using cooling tower equipment. [Structure] A new water supply system 2, an internal circulation system 3, and an external drainage system 4 are installed in a water storage tank 1 that stores cooling water 10 for cooling mechanical equipment, etc., and the amount of water supplied and discharged is adjusted by a water level gauge 5. , a device that adjusts tank circulation and drainage using a water thermometer 6 and a wet bulb thermometer 7. In the tank circulation, water is sent from the pump 41 to the header 31 and water is sprinkled in a shower to lower the water temperature.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is designed to circulate water in a water storage tank to cool high-temperature equipment used for cooling mechanical equipment, etc. It relates to a device that cools water and returns it to a water storage tank.

0002

[Conventional technology]

In cooling water equipment that circulates water while controlling the water temperature in the water tank, Figure 4 As shown in FIG. 1, there is a cooling tower 100 as a water temperature control device. The cooling tower 100 is a water storage tank A frame structure 102 is installed on top of 101, and a blower 103 is installed on the top. There is. Inside the frame structure 102, a filler 104 made of wood or the like is contained.

0003 The water in the water storage tank 101 is sent to the upper part of the frame structure 102 by the water pump 105, and Water is sprinkled inside the assembled structure 102 to cool it down. The sprinkled water 106 is applied to the frame structure. It naturally falls into the water storage tank 101 while hitting the wooden filling 104 in the container 102 . skeleton When the blower 103 on the top of the structure 102 is rotated, the frame structure 102 has an upward movement. Airflow occurs. At this time, the water 106 that is falling naturally reaches the water storage tank 101. By the time the air and water reach this point, heat exchange occurs between the air and water and some of the water evaporates, causing the water temperature to drop.

0004 The performance of a cooling tower depends on the amount of circulating water, the amount of air blown, the filling material, etc. Because it is an air-cooled equipment, it cannot be cooled below the wet bulb temperature of the air. . If the humidity difference between the water temperature and the wet bulb temperature is small, efficiency decreases and large-scale cooling tower installations are required. The operating power loss (splashed water, circulating water power, etc.) in the equipment will increase.

[0005] This cooling tower equipment requires a frame structure above the water tank, packing material, and a blower. Equipment costs will be considerable (several hundred million yen). Also, since the equipment uses water, it corrodes quickly. It also requires a lot of equipment repair costs. Therefore, in terms of water temperature management, if the summer temperature is high, The water temperature will rise suddenly, so please keep the water tank at or above the control temperature. Usually, it is difficult to decide whether to install cooling tower equipment or not.

[0006] As an example of a simple water tank, there is a heat tank disclosed in Japanese Utility Model Publication No. 13851/1983. There is processing equipment. In this equipment, the water tank was always filled with water, and the returning water was high temperature. If so, drain the water outside the system, replenish the water to lower the temperature, and use it as circulating water. .

[0007] However, in such equipment, when the frequency of operation increases and the heat load exceeds that of natural cooling, In order to lower the water temperature, new water supply and high-temperature water discharge increase, resulting in wasted water.

[0008] For this reason, as a simple cooling tower, the above-mentioned large-scale cooling tower is A model cooling tower with only packing without an exhaust fan has been proposed. Install a tower structure The scale of the equipment is large, and corrosion is likely to occur inside due to moisture. Ma In addition, natural cooling during shutdown becomes worse due to the tower, and the amount of water sprayed for cooling increases. There was a problem.

[0009]

[Problem that the idea aims to solve]

For water storage facilities without cooling tower equipment, this invention is designed to prevent water leakage in the water storage tank only for a short period of time (summer). In other periods, the water temperature in the tank is reduced by natural cooling, especially in the water tank. The challenge is to obtain a water cooling system.

0010

[Means to solve the problem]

The water cooling device in the water tank of this invention circulates and uses the water in the water tank to cool mechanical equipment, etc. In simple cooling equipment that cools A circulation system that supplies water in the tank to the watering header installed at the top of the tank, and A drainage system is installed to discharge water, a water level gauge and a water temperature gauge are installed inside the water storage tank, and a water level gauge and water temperature gauge are installed outside the water storage tank. A thermometer is provided, and the detection signals from each measuring device are sent to a controller, and the controller transmits each of the above. By means of sending control signals to the piping system to maintain a constant temperature of the water in the reservoir. The above issues have been resolved.

[0011]

[Effect]

Traditionally, simple water storage tanks without facilities such as cooling towers require drainage and fresh water supply when water temperature rises. They were trying to lower the water temperature by doing this. This invention detects increases in water temperature or outside air. Water is mainly cooled by using a water spray header installed at the top of the water tank. Drainage and water supply may be carried out as usual.

0012 Note that the air temperature used in this invention refers to the temperature used to measure the cooling point due to evaporative cooling of water. This indicates the wet bulb temperature, and when measuring the dry bulb temperature, measure the humidity at the same time. and convert it to wet bulb temperature.

[0013] In addition, because the circulation system and drainage system require water supply at different times, a water pump is shared between the circulation system and the drainage system. Therefore, equipment costs can be reduced. For facilities that already have a drainage pump installed, The configuration of the present invention can be easily achieved by adding piping equipment for the circulation system. Ru.

[0014]

【Example】

An embodiment of the water cooling device in a water tank according to the present invention will be explained with reference to FIG. 1-3. do.

[0015] As shown in FIG. Used in simple cooling equipment that circulates and cools mechanical equipment, etc. Water tank 1 A water supply system 2 for replenishing fresh water inside the water tank 1 and water 10 in the water tank 1 are installed at the top of the water tank 1. A circulation system 3 that supplies water to the watering header 31, and a drainage system 4 that discharges water 10 in the water storage tank 1. and. A water level gauge 5 and a water temperature gauge 6 are installed inside the water tank 1, and a temperature gauge is installed outside the water tank 1. 7 will be provided. The detection signals from each measuring device 5, 6, and 7 are sent to the controller 8. A control signal is sent to each of the piping systems 2, 3, and 4, and the temperature of the water 10 in the water tank 1 is kept constant. Keep it constant.

[0016] Next, the operation of the cooling device of the present invention will be explained.

[0017] Adjusting the water level Water is supplied and drained automatically using the water level gauge 5, and water is always kept within a certain range within the water tank 1. of water can be stored.

[0018] Equipment used (e.g. hardening equipment) When the operation starts, the water supply pump 91 is started and the water supply system 9 is quenched. Water is sent to the equipment from the water storage tank 1, and the return water passes through the pipe 92 and returns to the water storage tank as a natural flow. 1.

[0019] Aquarium arrangement Return water flows into the longitudinal end of the water storage tank 1, and the water supply pump 91 flows from the opposite side downward. The water supply position of water supply system 2, which replenishes fresh water sent to the furnace equipment by It is located at the end of the 91 side. The drainage system 4 is arranged near the return water pipe 92 side (the water collection part is It is preferable that it be slightly higher than the water collection part of the water pump 91).

[0020] When the water temperature near the water collection part of the water pump 91 rises, it is detected by the water thermometer 6. Rules When the water exceeds a fixed value, the drain pump 41 is started, the drain valve 42 is closed, and the water sprinkler valve 3 is closed. 2 is opened and watering is started from the watering header 31 provided at the top of the water tank 1. air Measure the temperature with the thermometer 7, and if the difference between the specified value and the temperature is small, open the drain valve 42, Lower the water level (drain water) and replenish fresh water.

[0021] A specific example of installing the device of this invention in a water storage tank facility for quenching in a heat treatment furnace at a plate factory is shown below. The following is shown. The amount of water in this quenching water storage tank equipment is approximately 2000 tons. Construction cost Due to the small amount of quenching, no cooling equipment is installed in the quenching water tank. It was. However, due to the increase in production in recent years, the temperature of the quenching water has increased and During periods of rising temperatures, it became impossible to process.

[0022] Since the capital investment effect is not as great as installing cooling tower equipment, it is difficult to install the cooling system of this invention. I placed it. As shown in Figure 1, a spray nozzle is installed at a height of 5.25 m above the water tank. 60 pieces were placed. Water from the water tank is sprayed from each nozzle at a rate of 10l/min. It will be done.

[0023] Figure 2 shows the temperature change in the water temperature of the sprayed water in the water tank. For effective cooling For this purpose, a head of 5 m or more is required.

[0024] Figure 3 shows a comparison of the relationship between quenching throughput and water tank water temperature, with and without cooling. shows.

[0025]

[Effect of the idea]

According to this invention, there is no need for large capital investments such as installing cooling tower equipment, and it is easy to use. It is possible to achieve a cooling effect close to the cooling capacity of a cooling tower with this equipment, making it extremely useful in industry. It is valid.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a water tank to which the device of the present invention is applied.

FIG. 2 is a graph showing the relationship between spray water falling height and water temperature.

FIG. 3 is a graph showing the relationship between the amount of heat treatment and the water temperature of the water tank.

FIG. 4 is a partially cutaway side view of a conventional cooling tower.

[Explanation of symbols]

1: Water tank, 2: Water supply system, 3: Circulation system,
4: Drainage system, 5: Water level gauge, 6: Water temperature gauge,
7: Thermometer, 8: Controller, 9: Water supply system, 2
1: Water supply valve,

Claims (1)

[Scope of utility model registration request] Claim 1: A simple cooling system that circulates water in a water tank to cool mechanical equipment, etc., which includes a water supply system that replenishes fresh water into the water tank, and a water supply system that supplies fresh water to the water tank. A circulation system for supplying water to the watering header installed at the top and a drainage system for discharging water from the water tank are installed, a water level gauge and a water temperature gauge are installed inside the water tank, and a thermometer is installed outside the water tank. The water in the water storage tank is characterized by sending detection signals from each measuring device to a controller, and sending control signals from the controller to each of the piping systems to maintain a constant temperature of the water in the water storage tank. cooling system.