Anti-freezing device of closed cooling tower

Abstract

The utility model discloses an anti-freezing device of a closed cooling tower, relates to the technical field of closed cooling towers, and aims to solve the problems that cold water is heated into hot water and sprayed out from a spray pipe to play an anti-freezing effect on a radiator coil, the temperature of water initially used by the closed cooling tower is changed, and the operation of the closed cooling tower is easily influenced in the prior art. A water outlet pipe is arranged on the surface of one side of the tower body, a water inlet pipe is arranged at the lower end of the water outlet pipe, and an access door is arranged at the front end of the tower body; the anti-freezing sleeve is arranged on the outer portion, close to the upper end, of the tower body, a front end sleeve is arranged in the anti-freezing sleeve, measuring end sleeves are arranged at the two ends of the front end sleeve, and the measuring end sleeves and the front end sleeve are of an integrated structure; the heating rod is arranged in the measuring end sleeve, a copper plate is arranged on the inner wall of the measuring end sleeve, a water pumping opening is formed in the upper surface of one end of the front end sleeve, and a water inlet is formed in the upper surface of the other end of the front end sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of closed cooling towers, in particular to an antifreeze device for a closed cooling tower. Background Art

[0002] The closed cooling tower places a tubular heat exchanger inside the tower, and ensures the cooling effect through the heat exchange between the circulating air, the spray water outside the tube and the circulating water inside the tube. Since the circulating water is a closed cycle inside the tube, it can ensure that the water quality is not polluted, which well protects the efficient operation of the main equipment;

[0003] For example, the Chinese authorized patent with announcement number CN214470192U (a new closed cooling tower antifreeze device): comprising a tower body, a spray pipe and a heat exchange coil are arranged in the tower body, a water collecting tank is arranged at the lower end of the tower body, the water outlet of the water collecting tank is connected to the cooling water inlet on the spray pipe through a circulating pump, a solenoid valve is arranged at the cooling water inlet, a jacket is arranged outside the tower body, a water inlet and a water outlet are arranged on the jacket, a temperature sensor and an electric heating device are arranged inside the jacket, the water inlet of the jacket is connected to the water outlet of the water collecting tank through a branch pipe, and a solenoid valve is arranged at the water inlet and the water outlet on the jacket. The antifreeze device is provided with a jacket outside the tower body, circulating water is filled in the jacket, and the ambient temperature is monitored by a temperature sensor. When the ambient temperature is low, the circulating water is heated by the electric heating device, thereby achieving the effect of heating and antifreeze of the inside of the tower body.

[0004] However, the existing method is to heat cold water into hot water and spray it from the spray pipe to have an antifreeze effect on the radiator coil, which changes the water temperature initially used in the closed cooling tower and is likely to affect the operation of the closed cooling tower; therefore, it does not meet the existing needs. In this regard, we propose a closed cooling tower antifreeze device. Utility Model Content

[0005] The utility model aims to provide an antifreeze device for a closed cooling tower to solve the problem in the prior art that cold water is heated to become hot water and sprayed out from a spray pipe to have an antifreeze effect on the radiator coil, which changes the water temperature initially used in the closed cooling tower and easily affects the operation of the closed cooling tower.

[0006] To achieve the above object, the utility model provides the following technical solution: a closed cooling tower antifreeze device, comprising: a tower body, a water outlet pipe is arranged on one side surface of the tower body, a water inlet pipe is arranged at the lower end of the water outlet pipe, and an inspection door is arranged at the front end of the tower body;

[0007] Also includes:

[0008] An antifreeze sleeve is arranged outside the tower body near the upper end, a front end sleeve is arranged inside the antifreeze sleeve, and both ends of the front end sleeve are provided with measuring end sleeves, and the measuring end sleeve and the front end sleeve are an integrated structure;

[0009] A heating rod is arranged inside the measuring end sleeve, the inner wall of the measuring end sleeve is provided with a copper plate, a water suction port is arranged on the upper surface of one end of the front end sleeve, and a water inlet is arranged on the upper surface of the other end of the front end sleeve.

[0010] Preferably, a circulation pump is arranged between the water inlet and the water pumping port, the inlet and outlet ends of the circulation pump are respectively connected to the water inlet and the water pumping port through water pipes, a drain outlet is arranged on the upper surface of the water pipe, and a drain outlet is arranged on one side of the drain outlet.

[0011] Preferably, a temperature sensor is provided on one side of the water pumping port, and the temperature sensor is embedded and fixed on the upper end of the front end sleeve.

[0012] Preferably, an installation notch is provided on the outer wall of the measuring end sleeve, and the installation notch and the measuring end sleeve are an integral structure.

[0013] Preferably, an inspection port is provided on one side of the installation notch, and the inspection port and the installation notch are an integrated structure, the inner wall of the inspection port is provided with a fixed inner edge, the front end of the fixed inner edge is provided with a sealing plate, and the corner of the sealing plate is threadedly connected to the fixed inner edge by a fixing screw.

[0014] Preferably, a fixing plate is provided on the lower surface of the front end sleeve, and the fixing plate and the front end sleeve are an integral structure, a fixing bolt is provided at the front end of the fixing plate, and the fixing plate is threadedly connected to the tower body through the fixing bolt.

[0015] Preferably, a solenoid valve is provided on one side of the water inlet, the water pumping port, the water discharge port and the water discharge port.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model sets an antifreeze sleeve on the outside of the tower body near the upper end, and uses a temperature sensor to monitor the ambient temperature. When the ambient temperature is below 0°C, an electrical signal is transmitted to the control system to start the heating rod and an external water supply device. Water enters from the water outlet and enters the antifreeze sleeve along the water inlet. The water is heated by the heating rod and the heat is transferred to the inside of the tower body by heat transfer. The heat transfer efficiency is improved by a copper plate, so that the temperature inside the tower body is higher than 0°C, so that the radiator coil will not be frozen and cracked and damaged. Compared with the existing method of directly changing the warm water for spraying water, the temperature of the water normally used in the closed cooling tower will not be changed by heat transfer, but the temperature inside the tower body will be changed, which is equivalent to simulating the ambient temperature in spring and autumn, thereby achieving an antifreeze effect and will not hinder the normal use of the closed cooling tower.

[0018] 2. A fixing plate is arranged at the lower end of the front sleeve, and an installation notch is arranged on the surface of the measuring end sleeve. The installation notch does not hinder the installation of the measuring end sleeve and the water outlet pipe and the water inlet pipe. The antifreeze sleeve is put on the outside of the tower body near the upper end from top to bottom. The fixing plate is threadedly connected to the tower body through fixing bolts to fix the antifreeze sleeve to the tower body, which is convenient for disassembly and installation of the antifreeze sleeve, and improves convenience and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the antifreeze sleeve structure from a top view of the present utility model;

[0021] Figure 3 This is a front view structural diagram of the front end sleeve of the utility model;

[0022] Figure 4 This is a schematic diagram of the surface structure of the measuring end sleeve of the utility model;

[0023] In the figure: 1. tower body; 2. inspection door; 3. water outlet pipe; 4. water inlet pipe; 5. antifreeze sleeve; 6. front end sleeve; 7. measuring end sleeve; 8. installation notch; 9. inspection port; 10. sealing plate; 11. fixing screws; 12. temperature sensor; 13. water inlet; 14. water pipe; 15. circulation pump; 16. water inlet; 17. drain outlet; 18. drain outlet; 19. heating rod; 20. copper plate; 21. fixing plate; 22. fixing bolts; 23. fixing inner edge. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a closed cooling tower antifreeze device, comprising: a tower body 1, a water outlet pipe 3 is arranged on one side surface of the tower body 1, a water inlet pipe 4 is arranged at the lower end of the water outlet pipe 3, and an inspection door 2 is arranged at the front end of the tower body 1;

[0026] Also includes:

[0027] The antifreeze sleeve 5 is arranged outside the tower body 1 near the upper end, and a front end sleeve 6 is arranged inside the antifreeze sleeve 5. Both ends of the front end sleeve 6 are provided with a measuring end sleeve 7, and the measuring end sleeve 7 and the front end sleeve 6 are an integral structure;

[0028] The heating rod 19 is arranged inside the measuring end sleeve 7. The inner wall of the measuring end sleeve 7 is provided with a copper plate 20. The upper surface of one end of the front end sleeve 6 is provided with a water suction port 13, and the upper surface of the other end of the front end sleeve 6 is provided with a water inlet 16.

[0029] Start the heating rod 19 and the external water supply device, water enters from the drain port 18, enters the antifreeze sleeve 5 along the water inlet 16, is heated by the heating rod 19, and the heat is transferred to the inside of the tower body 1 by heat transfer. The copper plate 20 is used to improve the heat transfer efficiency, so that the temperature inside the tower body 1 is higher than 0°C, so that the radiator coil will not be frozen and damaged, and the temperature of the water normally used in the closed cooling tower will not be changed. Only the temperature inside the tower body 1 is changed, which is equivalent to simulating the ambient temperature in spring and autumn, thereby achieving an antifreeze effect.

[0030] See also Figure 1 A circulation pump 15 is arranged between the water inlet 16 and the water pumping port 13. The inlet and outlet ends of the circulation pump 15 are respectively connected to the water inlet 16 and the water pumping port 13 through a water pipe 14. A drain outlet 17 is arranged on the upper surface of the water pipe 14. A drain outlet 18 is arranged on one side of the drain outlet 17 for water recycling to avoid waste of water resources.

[0031] See also Figure 1 A temperature sensor 12 is provided on one side of the water inlet 13, and the temperature sensor 12 is embedded and fixed on the upper end of the front end sleeve 6. The temperature sensor 12 is used to monitor the ambient temperature. When the ambient temperature is below 0°C, an electrical signal is transmitted to the control system.

[0032] See also Figure 1 , 4 The outer wall of the measuring end sleeve 7 is provided with an installation notch 8, and the installation notch 8 and the measuring end sleeve 7 are an integral structure. When the antifreeze sleeve 5 is installed, the installation notch 8 does not hinder the installation of the measuring end sleeve 7 and the water outlet pipe 3 and the water inlet pipe 4.

[0033] See also Figure 1 , 4 An inspection port 9 is provided on one side of the installation notch 8, and the inspection port 9 and the installation notch 8 are an integrated structure. A fixed inner edge 23 is provided on the inner wall of the inspection port 9, and a sealing plate 10 is provided at the front end of the fixed inner edge 23. The corner of the sealing plate 10 is threadedly connected to the fixed inner edge 23 by a fixing screw 11. The inspection port 9 is used to facilitate the inspection of the heating rod 19, and the sealing plate 10 is used to improve the sealing performance and avoid water leakage.

[0034] See also Figure 1 , 3A fixing plate 21 is provided on the lower surface of the front end sleeve 6, and the fixing plate 21 and the front end sleeve 6 are an integral structure. A fixing bolt 22 is provided at the front end of the fixing plate 21, and the fixing plate 21 is threadedly connected to the tower body 1 through the fixing bolt 22 to fix the antifreeze sleeve 5 and the tower body 1.

[0035] See also Figure 1 A solenoid valve is provided on one side of the water inlet 16, the water pumping port 13, the drain port 17 and the water outlet 18, and the opening and closing of the water inlet 16, the water pumping port 13, the drain port 17 and the water outlet 18 are controlled by the solenoid valve.

[0036] Working principle: When in use, the inlet and outlet ends of the circulation pump 15 are connected to the water inlet 16 and the water outlet 13 through the water pipe 14, and the water outlet 18 is connected to the external water supply device, and the antifreeze sleeve 5 is sleeved from top to bottom on the outside of the tower body 1 near the upper end. The fixing plate 21 is threadedly connected to the tower body 1 through the fixing bolts 22 to fix the antifreeze sleeve 5 to the tower body 1. The temperature sensor 12 is used to monitor the ambient temperature. When it is below 0°C, an electrical signal is transmitted to the control system to start the heating rod 19 and the external water supply device. Water enters from the water outlet 18 and enters the antifreeze sleeve 5 along the water inlet 16, and is heated by the heating rod 19. Heat is transferred to the inside of the tower body 1 by means of heat transfer, and the copper plate 20 is used to improve the heat transfer efficiency so that the temperature inside the tower body 1 is higher than 0°C, so that the radiator coil will not be frozen and damaged, and the temperature of the water normally used in the closed cooling tower will not be changed. Only the temperature inside the tower body 1 is changed, which is equivalent to simulating the ambient temperature in spring and autumn, thereby achieving an antifreeze effect. When discharging hot water, the solenoid valves of the water outlet 18 and the water inlet 16 are closed, and the solenoid valves of the water pumping port 13 and the water outlet 17 are opened, and the circulating pump 15 is started to pump water out of the water pumping port 13 and discharge it from the water outlet 17 for secondary use.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A closed cooling tower antifreeze device, comprising a tower body (1), a water outlet pipe (3) being arranged on one side surface of the tower body (1), a water inlet pipe (4) being arranged at the lower end of the water outlet pipe (3), and an inspection door (2) being arranged at the front end of the tower body (1); Features: Also includes: An antifreeze sleeve (5) is arranged outside the tower body (1) near the upper end, a front end sleeve (6) is arranged inside the antifreeze sleeve (5), and both ends of the front end sleeve (6) are provided with measuring end sleeves (7), and the measuring end sleeves (7) and the front end sleeve (6) are an integrated structure; A heating rod (19) is arranged inside the measuring end sleeve (7), the inner wall of the measuring end sleeve (7) is provided with a copper plate (20), a water suction port (13) is provided on the upper surface of one end of the front end sleeve (6), and a water inlet (16) is provided on the upper surface of the other end of the front end sleeve (6).

2. A closed cooling tower antifreeze device according to claim 1, characterized in that: A circulation pump (15) is provided between the water inlet (16) and the water pumping port (13); the inlet and outlet ends of the circulation pump (15) are respectively connected to the water inlet (16) and the water pumping port (13) through a water pipe (14); a drain port (17) is provided on the upper surface of the water pipe (14); and a drain port (18) is provided on one side of the drain port (17).

3. A closed cooling tower antifreeze device according to claim 1, characterized in that: A temperature sensor (12) is provided on one side of the water pumping port (13), and the temperature sensor (12) is embedded and fixed on the upper end of the front end sleeve (6).

4. The closed cooling tower antifreeze device according to claim 1, characterized in that: The outer wall of the measuring end sleeve (7) is provided with a mounting notch (8), and the mounting notch (8) and the measuring end sleeve (7) are an integral structure.

5. A closed cooling tower antifreeze device according to claim 4, characterized in that: An inspection opening (9) is provided on one side of the installation notch (8), and the inspection opening (9) and the installation notch (8) are an integral structure. A fixed inner edge (23) is provided on the inner wall of the inspection opening (9), and a sealing plate (10) is provided at the front end of the fixed inner edge (23). The corner of the sealing plate (10) is threadedly connected to the fixed inner edge (23) via a fixing screw (11).

6. The closed cooling tower antifreeze device according to claim 1, characterized in that: A fixing plate (21) is provided on the lower surface of the front end sleeve (6), and the fixing plate (21) and the front end sleeve (6) are an integral structure. A fixing bolt (22) is provided at the front end of the fixing plate (21), and the fixing plate (21) is threadedly connected to the tower body (1) via the fixing bolt (22).

7. A closed cooling tower antifreeze device according to claim 2, characterized in that: Solenoid valves are provided on one side of the water inlet (16), the water pumping port (13), the water discharge port (17) and the water discharge port (18).

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