CN110736355A - Water leakage detection system of spray cooling fan heat exchanger - Google Patents

Abstract

The invention relates to a water leakage detection system for a spray-cooled fan heat exchanger, which comprises a tray arranged on the outer periphery of the bottom of the spray-cooled fan heat exchanger, a water receiving tank arranged at the lower part of the tray, and a water-receiving tank soluble in the spray-cooled fan A good conductor of desalinated water in the heater, two contacts set in the water receiving tank, an alarm connected to the two contacts, a wrapping sleeve set on each contact, a gap set on the wrapping sleeve . The device is placed at the lower part of the heat exchanger tray of the spray cooling fan, and a dedicated water tank is installed. The two contacts of the sound and light alarm are placed in the water tank and wrapped with a wrapping sleeve. After the heat exchanger leaks, the alarm will alarm. It is used to solve the problem that the atmosphere in the furnace is polluted due to water leakage during the use of the heat exchanger. It is suitable for use in the galvanizing production line. The use of this device can ensure or improve the surface quality of galvanized products.

Description

Water leakage detection system of spray cooling fan heat exchanger

technical field

The patent application belongs to the technical field of auxiliary equipment for galvanizing cold rolling and annealing furnace production, and more specifically, relates to a water leakage detection system for a spray cooling fan heat exchanger.

Background technique

In the galvanizing production line, the annealing furnace is the key equipment, which generally consists of a heating section, a soaking section and a cooling section. In the production process, after the steel strip is heated to the annealing temperature, it needs to be cooled to about 460 degrees, and then galvanized into a finished product.

Since the cooling section uses nitrogen and hydrogen to cool the strip, a water-cooled heat exchanger is required to cool the hot nitrogen and hydrogen. The spray cooling section has very strict requirements on nitrogen and hydrogen dew point and oxygen content. The dew point is required to be -40 degrees, and the oxygen content is lower than 50 ppm. In actual production, the heat exchanger ruptured and the cooling water flowed into the furnace body, which seriously damaged the atmosphere in the furnace. , resulting in production accidents.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a water leakage detection system for the heat exchanger of the spray cooling fan, so as to avoid the influence of the water leakage of the heat exchanger on the surface quality of the galvanized sheet product.

In order to solve the above problems, the technical scheme adopted in the present invention is:

A water leakage detection system for a spray-cooled fan heat exchanger, comprising a tray arranged on the outer periphery of the bottom of the spray-cooled fan heat exchanger, a water receiving tank arranged at the lower part of the tray, and a water-receiving tank soluble in the spray-cooled fan heat exchanger arranged in the water receiving tank A good conductor of desalinated water, two contacts arranged in the water receiving tank, an alarm connected to the two contacts, a wrapping sleeve arranged on each contact, and a notch arranged on the wrapping sleeve.

A further improvement of the technical solution of the present invention is that the alarm is an acousto-optic alarm.

A further improvement of the technical solution of the present invention is that the good conductor is salt.

A further improvement of the technical solution of the present invention is that the notch is arranged at the bottom or the middle of the wrapping sleeve, and the notch is a circle, a triangle, a quadrangle or a special shape.

A further improvement of the technical solution of the present invention is that the wrapping sleeve is a ceramic outer covering.

A further improvement of the technical solution of the present invention is that the water receiving tank is welded and arranged at the lower part of the tray.

Due to the adoption of the above technical solutions, the present invention has the following beneficial effects: the device is simple in structure, convenient in use, accurate in detection, sensitive in drafting, and easy in application, and is used to solve the problem that during the use of the heat exchanger, since the heat exchanger is in a closed furnace The system works in the body, once it is damaged and leaks, it is not easy to find. This system can detect the water leakage in time to avoid the problem of water leakage causing the atmosphere in the furnace to be polluted (water vapor contaminates the reducing furnace gas). It is suitable for use in the galvanizing production line.

Description of drawings

Fig. 1 is a schematic structural diagram one of the present invention;

Fig. 2 is the structure schematic diagram two of the present invention;

Among them: 1. Spray cooling fan heat exchanger, 2. Tray, 3. Water tank, 4. Good conductor, 5. Contact, 6. Alarm, 7. Wrapping sleeve, 8. Notch, 9. Desalted water.

Detailed ways

The present invention will be described in further detail below in conjunction with the embodiments.

The invention discloses a water leakage detection system for a spray-cooled fan heat exchanger, comprising a tray 2 arranged on the outer periphery of the bottom of the spray-cooled fan heat exchanger 1, a water receiving tank 3 arranged at the lower part of the tray 2, and a water receiving tank 3 arranged in the water receiving tank 3. The good conductor 4 of the desalinated water 9 dissolved in the heat exchanger 1 of the spray cooling fan, the two contacts 5 arranged in the water receiving tank 3, the alarm 6 connected with the two contacts 5, and the wrapping arranged in each contact. The wrapping cover 7 on point 5, the gap 8 set on the wrapping cover 7.

The alarm device 6 is a sound and light alarm device, which is convenient for timely discovery; the good conductor 4 is table salt, which is convenient to obtain. Of course, industrial salt or other substances can also be selected. The notch 8 is arranged at the bottom or the middle of the wrapping sleeve 7, and the notch 8 is a circle, a triangle, a quadrangle or a special shape, and the shape is not limited. The wrapping cover 7 is a ceramic jacket, and the water receiving tank 3 is welded and arranged at the lower part of the tray 2 .

When in use, as shown in Figure 1, the spray cooling fan heat exchanger 1 is supported by a tray 2, and a water receiving tank 3 is installed and welded on the tray 2. Since the heat exchanger 1 uses demineralized water 9, the demineralized water has a poor electrical conductivity. , so a good conductor 4 made of table salt is placed in the water receiving tank. If the heat exchanger 1 leaks, the desalinated water 9 flows into the water receiving tank 3. The conductivity of the desalinated water 9 is less than 10µs/cm, which is not enough to conduct the contacts. After salt, it becomes a good conductor of electricity. The two contacts 5 of the sound and light alarm 6 are placed in the tray 2. The two contacts 5 are wrapped with a wrapping sleeve 7 made of a ceramic outer casing (as shown in Figure 2). There is a gap 8. After the water submerges the ceramic jacket, the alarm circuit is turned on. The sound and light alarm 6 alarms and emits light, which is convenient for personnel to discover in time.

Claims (6)

1. A water leakage detection system for a spray cooling fan heat exchanger, characterized in that it comprises a tray (2) arranged on the outer periphery of the bottom of the spray cooling fan heat exchanger (1), a water receiving tank (3) arranged at the lower part of the tray (2) ), a good conductor (4) disposed in the water receiving tank (3) and soluble in the desalinated water (9) in the spray cooling fan heat exchanger (1), and two contacts disposed in the water receiving tank (3) (5), an alarm (6) connected to the two contacts (5), a wrapping sleeve (7) arranged on each contact (5), a notch (8) arranged on the wrapping sleeve (7) ). 2 . The water leakage detection system of a spray cooling fan heat exchanger according to claim 1 , wherein the alarm ( 6 ) is an acousto-optic alarm. 3 . 3 . The water leakage detection system for a spray-cooled fan heat exchanger according to claim 2 , wherein the good conductor ( 4 ) is salt. 4 . 4. The water leakage detection system for a spray-cooled fan heat exchanger according to claim 3, wherein the gap (8) is arranged at the bottom or the middle of the wrapping sleeve (7), and the gap (8) is in the shape of a circle, a triangle or a quadrangle. or alien. 5 . The water leakage detection system for a spray-cooled fan heat exchanger according to claim 4 , wherein the wrapping sleeve ( 7 ) is a ceramic jacket. 6 . 6 . The water leakage detection system of the spray cooling fan heat exchanger according to claim 5 , wherein the water receiving groove ( 3 ) is welded and arranged at the lower part of the tray ( 2 ). 7 .

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