Temperature alarm device for electrical equipment

Abstract

The invention relates to the technical field of temperature alarm devices, in particular to a temperature alarm device for electrical equipment, which comprises a first shell, a heat conducting sheet is arranged in the first shell, a cooling shell is arranged on one side of the first shell, and a cooling assembly for cooling the temperature alarm device is arranged in the cooling shell. One cooling pipe set is fixed in the cooling shell, the water turbine is arranged at the bottom of the cooling pipe set and fixed to the cooling pipe set, an alternating assembly used for alternately converting cold air and hot air in the cooling shell is arranged on the transmission shaft, and a water inflow preventing assembly used for preventing water from entering the first shell is arranged on one side of the first shell. Through cooperative use of the cooling assembly, the alternating assembly and the waterproof assembly, the temperature alarm device is effectively prevented from being affected by the humidity in the greenhouse, water vapor is prevented from entering the temperature alarm device, and the conditions that a temperature sensor fails and is damaged in the damp and hot environment of the greenhouse are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of temperature alarm devices, and in particular to a temperature alarm device for electrical equipment. Background Art

[0002] The main function of the temperature alarm device of electrical equipment is to monitor the temperature of the equipment and issue an alarm when the temperature exceeds the preset safety range. In the greenhouse, because the greenhouse has a certain degree of sealing and the internal temperature is relatively high, the greenhouse will continue to rise with the exposure to sunlight. When the temperature is high and overloaded, it will cause the temperature alarm device to fail. In severe cases, it will cause damage to the temperature alarm device, affecting the temperature alarm device's detection of electrical equipment. In addition, the humidity in the greenhouse is high. When water vapor enters the alarm device, it will cause corrosion and damage to the machine. Moreover, when the temperature alarm detects that the temperature is too high and an alarm is issued, it takes time for manual intervention, resulting in the temperature of the temperature alarm device itself not being able to be reduced in time. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a temperature alarm device for electrical equipment.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a first shell, a heat conducting sheet is arranged inside the first shell, a cooling shell is arranged on one side of the first shell, a water tank is arranged at the bottom of the first shell, and a cooling component for cooling the temperature alarm device is arranged inside the cooling shell; the cooling component comprises: a cooling pipe group, a feed pipe, a discharge pipe, a water turbine, a spray box, two sealed bearings and a transmission shaft; wherein, a cooling pipe group is fixed inside the cooling shell, the feed pipe and the discharge pipe are respectively fixed at two ends of the cooling pipe group, the water turbine is arranged at the bottom of the cooling pipe group and fixed to the cooling pipe group, the spray box is fixed at the top of the cooling pipe group, and the water turbine corresponds to the spray box, and the top end of the inner wall of the cooling shell is provided with a shaft The transmission shaft is fixed to the inner ring of the bearing of the cooling shell, the spray box and the top of the turbine are both provided with sealed bearings, the transmission shaft is fixed to the inner rings of the two sealed bearings, and the transmission shaft extends to the inside of the turbine, the transmission shaft is fixed to the output shaft inside the turbine, and the output shaft inside the turbine rotates when water enters, a water inlet and a drain are provided at the bottom of the cooling shell, the feed pipe and the discharge pipe are respectively fixed to the water inlet and the drain at the bottom of the cooling shell, the cooling pipe group is in a corrugated winding shape, and the cooling pipe group fits the inner wall of the cooling shell, and an alternating component for alternatingly converting the cold and hot air inside the cooling shell is provided on the transmission shaft; the alternating component includes: a centrifugal shell, two fan shells, two inclined air ducts, two single-head gear rods, a conical gear and two centrifugal fans blades; wherein bearings are provided at both upper and lower ends of the centrifugal shell, the inner ring of the bearing of the centrifugal shell is fixedly connected to the transmission shaft, a fan shell is fixed on each side of the centrifugal shell, a centrifugal blade is provided inside each fan shell, and an inclined air duct is fixed on one side of the two fan shells, a bearing is provided on the back of the two fan shells, a single-head gear rod is fixed to the inner ring of the bearing of the fan shell, and the end of the single-head gear rod without a gear is fixed to the back of the centrifugal blade, a bevel gear is provided on the transmission shaft, and the two single-head gear rods are meshed with the bevel gear, a water outlet plate is provided inside the cooling shell, and a plurality of slots corresponding to the cooling tube group are provided on one side of the water outlet plate, the cooling tube group is fixed on the plurality of slots of the water outlet plate, a placement hole is provided on the water outlet plate, and the turbine is fixed on In the placement hole of the water outlet plate, the water outlet plate is a concave plate, and an opening is provided at the lowest point of the water outlet plate, the opening at the lowest point of the water outlet plate is fixedly connected to the water outlet pipe, a circulation port is provided at the bottom of the cooling shell, the water outlet pipe is fixed to the circulation port on the cooling shell, the two oblique air ducts of the two fan shells are correspondingly inclined, and a positioning rod is provided at the bottom of the two oblique air ducts, the bottom of the positioning rod is fixedly connected to the water outlet plate, the wind enters from the front of the fan shell, moves along the inner wall of the fan shell to the position of the oblique air port, and comes out along the oblique air duct, and the oblique air ducts on both sides are inclined at forty-five degrees, four spray nozzles are provided inside the spray box, and the four spray nozzles are inclined at forty-five degrees and fixed correspondingly to the lower half of the spray box, a bearing is provided at the center of the spray box, and the transmission shaft is fixed to the inner ring of the bearing of the spray box.

[0005] Preferably, through the cooperation of the cooling component and the alternating component, when the internal temperature of the first shell is too high, the output shaft inside the turbine rotates to drive water to move along the inside of the cooling tube group, and when the water enters the spray box, the air inside the spray box is compressed through the sealed bearing and then the water is sprayed out through the spray nozzle, and the low-temperature water inside the cooling tube group cools the heat conducting plate, and the water sprayed from the spray nozzle reduces the temperature inside the cooling shell, and then when the output shaft inside the turbine rotates, it drives the transmission shaft to rotate, and when the transmission shaft rotates, due to the conical teeth on the transmission shaft The wheel is meshed with two single-headed gear rods, and then the transmission shaft drives the single-headed gear rod to rotate, and the rotation of the single-headed gear rod drives the two centrifugal fan blades to rotate, and then the rotation of the two centrifugal fan blades sucks the air on both sides of the cooling shell into the inside of the fan shell. After the air enters the inside of the fan shell, it flows into the inclined air duct along the inclined air outlet and is discharged. Because the air heat on both sides of the cooling shell is different due to the distance from the temperature alarm device, the air temperature on both sides is different, and the air of different temperatures on both sides is converted through the two inclined air ducts, and then the inclined air ducts alternately cool the air inside the cooling shell.

[0006] As a preferred technical solution of the present invention, one side of the first shell is provided with an anti-water ingress component for preventing water from entering the first shell, and the anti-water ingress component includes: a sealing gasket, a plurality of fixing plates and a plurality of fixing bolts; wherein, the sealing gasket is arranged on one side of the first shell, and the sealing gasket is provided with a slot for clamping the heat conducting plate, the heat conducting plate is clamped on the sealing gasket, a plurality of corresponding fixing plates are provided on both sides of the first shell and the cooling shell, the fixing plates on the first shell and the cooling shell are threadedly connected through a plurality of fixing bolts, and a groove is provided on the side corresponding to the sealing gasket and the first shell, and one side of the first shell is inserted into the groove of the sealing gasket, the feed pipe and the discharge pipe both extend to the interior of the water tank, the water pump shell is fixed on the top of the water tank, a water pump is provided inside the water pump shell, the water pump is fixed at the lower end of the discharge pipe, and the diameter of the discharge pipe is larger than the diameter of the feed pipe.

[0007] Preferably, through the use of waterproof components, when cooling is required, the water pump is turned on, and the water pump draws the water inside the water tank out of the discharge pipe, the water moves along the shape of the cooling pipe group, and the water sprayed from the spray nozzle will follow the shape of the cooling shell and finally drip onto the water outlet plate. The water outlet plate is concave, and the water will follow the shape of the water outlet plate to the lowest point of the water outlet plate, and then enter the water outlet pipe along the opening of the water outlet plate, and finally flow back to the water tank along the water outlet pipe, and the sealing gasket has sealing properties, which can prevent water from entering the interior of the first shell. When the interior of the first shell needs to be inspected, the connection between the first shell and the cooling shell can be released by turning the fixing bolt.

[0008] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0009] 1. Through the coordinated use of cooling components and alternating components, the temperature alarm device can be effectively prevented from being damaged or malfunctioning due to excessive temperature, thereby increasing the service life of the temperature alarm device.

[0010] 2. Through the coordinated use of cooling components, alternating components and waterproof components, the temperature alarm device is effectively prevented from being affected by the humidity inside the greenhouse, water vapor is prevented from entering the temperature alarm device, and the temperature sensor is prevented from malfunctioning and being damaged in the hot and humid environment of the greenhouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 For the present invention Figure 1 Schematic diagram of cross-section structure of water pump casing;

[0013] Figure 3 For the present invention Figure 2 Schematic diagram of the middle fixing bolt structure;

[0014] Figure 4 For the present invention Figure 2 Schematic diagram of the structure of the middle cooling pipe group;

[0015] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle sealed bearing;

[0016] Figure 6 For the present invention Figure 5 Schematic diagram of the transmission shaft structure;

[0017] Figure 7 For the present invention Figure 1 Schematic diagram of the structure of the intermediate cooling shell group;

[0018] Figure 8 For the present invention Figure 5 Schematic diagram of the cross-section structure of the centrifugal shell;

[0019] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure of the medium-slanted air duct;

[0020] Fig.10 For the present invention Figure 2 Schematic diagram of the middle water outlet plate structure.

[0021] Among them: 1. first shell; 2. cooling shell; 3. water tank; 4. water pump shell; 5. heat conducting plate; 6. sealing gasket; 7. fixing plate; 8. fixing bolt; 9. cooling pipe group; 10. water inlet; 11. circulation port; 12. drain port; 13. inlet pipe; 14. outlet pipe; 15. turbine; 16. spray box; 17. sealed bearing; 18. transmission shaft; 19. centrifugal shell; 20. spray nozzle; 21. fan shell; 22. oblique air duct; 23. single-head gear rod; 24. bevel gear; 25. positioning rod; 26. centrifugal fan blade; 27. oblique air outlet; 28. water outlet plate; 29. ​​water outlet pipe; 30. water pump. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0023] Embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 ,picture, Fig. 9 and Fig.10As shown, it includes a first shell 1, a heat conducting sheet 5 is arranged inside the first shell 1, a cooling shell 2 is arranged on one side of the first shell 1, a water tank 3 is arranged at the bottom of the first shell 1, and a cooling component for cooling the temperature alarm device is arranged inside the cooling shell 2; the cooling component includes: a cooling pipe group 9, an inlet pipe 13, a discharge pipe 14, a turbine 15, a spray box 16, two sealed bearings 17 and a transmission shaft 18; wherein, a cooling pipe group 9 is fixed inside the cooling shell 2, the inlet pipe 13 and the discharge pipe 14 are respectively fixed at the two ends of the cooling pipe group 9, the turbine 15 is arranged at the bottom of the cooling pipe group 9 and fixed to the cooling pipe group 9, the spray box 16 is fixed at the top of the cooling pipe group 9, and the turbine 15 corresponds to the spray box 16, a bearing is arranged on the top of the inner wall of the cooling shell 2, and the transmission shaft 18 is fixed to the inner ring of the bearing of the cooling shell 2 The top of the spray box 16 and the turbine 15 are both provided with sealed bearings 17, the transmission shaft 18 is fixed to the inner rings of the two sealed bearings 17, and the transmission shaft 18 extends to the inside of the turbine 15, the transmission shaft 18 is fixed to the output shaft inside the turbine 15, and the output shaft inside the turbine 15 rotates when water enters, the bottom of the cooling shell 2 is provided with a water inlet 10 and a drain port 12, the feed pipe 13 and the discharge pipe 14 are respectively fixed on the water inlet 10 and the drain port 12 at the bottom of the cooling shell 2, the cooling pipe group 9 is in a corrugated winding shape, and the cooling pipe group 9 is in contact with the inner wall of the cooling shell 2, and the transmission shaft 18 is provided with an alternating component for alternatingly converting the hot and cold air inside the cooling shell 2; the alternating component includes: a centrifugal shell 19, two fan shells 21, two inclined air ducts 22, two single-head gear rods 23, a bevel gear 24 and two centrifugal blades 26;Among them, bearings are provided at the upper and lower ends of the centrifugal shell 19, the inner ring of the bearing of the centrifugal shell 19 is fixedly connected to the transmission shaft 18, a fan shell 21 is fixed on both sides of the centrifugal shell 19, each fan shell 21 is provided with a centrifugal blade 26 inside, and an inclined air duct 22 is fixed on one side of the two fan shells 21, and a bearing is provided on the back of the two fan shells 21, a single-head gear rod 23 is fixed to the inner ring of the bearing of the fan shell 21, and the end of the single-head gear rod 23 without a gear is fixed to the back of the centrifugal blade 26, a bevel gear 24 is arranged on the transmission shaft 18, and the two single-head gear rods 23 are meshed with the bevel gear 24, a water outlet plate 28 is arranged inside the cooling shell 2, and one side of the water outlet plate 28 is provided with a plurality of slots corresponding to the cooling tube group 9, the cooling tube group 9 is fixed on the plurality of slots of the water outlet plate 28, the water outlet plate 28 is provided with a placement hole, and the turbine 15 is fixed on the water outlet plate 28 is placed in the hole, the water outlet plate 28 is a concave plate, and the lowest point of the water outlet plate 28 is provided with an opening, the lowest point of the water outlet plate 28 is fixedly connected to the water outlet pipe 29, the bottom of the cooling shell 2 is provided with a circulation port 11, the water outlet pipe 29 is fixed to the circulation port 11 on the cooling shell 2, the two oblique air ducts 22 of the two fan shells 21 are correspondingly inclined, and the bottom of the two oblique air ducts 22 is provided with a positioning rod 25, the bottom of the positioning rod 25 is fixedly connected to the water outlet plate 28, the wind enters from the front of the fan shell 21, moves along the inner wall of the fan shell 21 to the position of the oblique air port 27, and comes out along the oblique air duct 22, and the oblique air ducts 22 on both sides are inclined at 45 degrees, the inside of the spray box 16 is provided with four spray nozzles 20, and the four spray nozzles 20 are inclined at 45 degrees and fixed to the lower half of the spray box 16, a bearing is provided at the center of the spray box 16, and the transmission shaft 18 is fixed to the inner ring of the bearing of the spray box 16. ;

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 7 and Fig.10 As shown, one side of the first shell 1 is provided with an anti-water ingress component for preventing water from entering the first shell 1, and the anti-water ingress component includes: a sealing gasket 6, a plurality of fixing plates 7 and a plurality of fixing bolts 8; wherein, the sealing gasket 6 is arranged on one side of the first shell 1, and the sealing gasket 6 is provided with a slot for clamping the heat conducting plate 5, and the heat conducting plate 5 is clamped on the sealing gasket 6, and a plurality of corresponding fixing plates 7 are provided on both sides of the first shell 1 and the cooling shell 2, and the fixing plates 7 on the first shell 1 and the cooling shell 2 are threadedly connected through a plurality of fixing bolts 8, and a groove is provided on the side corresponding to the sealing gasket 6 and the first shell 1, and one side of the first shell 1 is inserted into the groove of the sealing gasket 6, and the feed pipe 13 and the discharge pipe 14 both extend to the interior of the water tank 3, and the water pump shell 4 is fixed on the top of the water tank 3, and a water pump 30 is provided inside the water pump shell 4, and the water pump 30 is fixed at the lower end of the discharge pipe 14, and the diameter of the discharge pipe 14 is larger than the diameter of the feed pipe 13.

[0025] Working principle:

[0026] When cooling is required, the water pump 30 is turned on, and the water pump 30 draws the water inside the water tank 3 out of the discharge pipe 14, and the water moves along the shape of the cooling pipe group 9, and the water sprayed from the spray nozzle 20 will eventually drip onto the water outlet plate 28 along the shape of the cooling shell 2. The water outlet plate 28 is concave, and the water will follow the shape of the water outlet plate 28 to the lowest point of the water outlet plate 28, and then enter the water outlet pipe 29 along the opening of the water outlet plate 28, and finally flow back to the water tank 3 along the water outlet pipe 29. The sealing gasket 6 has sealing properties, and the sealing gasket 6 can prevent water from entering the interior of the first shell 1. When the interior of the first shell 1 needs to be repaired, the connection between the first shell 1 and the cooling shell 2 is released by rotating the fixing bolt 8. When the internal temperature of the first shell 1 is too high, the output shaft inside the turbine 15 rotates to drive the water to move along the interior of the cooling pipe group 9. When water enters the spray box 16, the air inside the spray box 16 is compressed through the sealing bearing 17 and then Water is sprayed out through the spray nozzle 20, and the low-temperature water inside the cooling tube group 9 cools the heat conducting plate 5. The water sprayed from the spray nozzle 20 reduces the temperature inside the cooling shell 2, and then when the output shaft inside the turbine 15 rotates, it drives the transmission shaft 18 to rotate. When the transmission shaft 18 rotates, the bevel gear 24 on the transmission shaft 18 meshes with the two single-headed gear rods 23, and then the transmission shaft 18 drives the single-headed gear rods 23 to rotate. The rotation of the single-headed gear rods 23 drives the two centrifugal blades 26 to rotate, and then the two centrifugal blades 26 rotate to suck the air on both sides of the cooling shell 2 into the inside of the fan shell 21. After the air enters the inside of the fan shell 21, it flows into the inclined air duct 22 along the inclined air port 27 and is discharged. Because the air heat on both sides of the cooling shell 2 is different due to the distance from the temperature alarm device, the air temperature on both sides is different. The air of different temperatures on both sides is converted through the two inclined air ducts 22, and then the inclined air duct 22 alternately cools the air inside the cooling shell 2.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A temperature alarm device for electrical equipment, comprising a first shell (1), a heat conducting sheet (5) is provided inside the first shell (1), a cooling shell (2) is provided on one side of the first shell (1), and a water tank (3) is provided at the bottom of the first shell (1), characterized in that: A cooling component for cooling the temperature alarm device is provided inside the cooling shell (2); The cooling component comprises: a cooling pipe group (9), a material inlet pipe (13), a material outlet pipe (14), a water turbine (15), a material spraying box (16), two sealed bearings (17) and a transmission shaft (18); A cooling tube group (9) is fixed inside the cooling shell (2), an inlet pipe (13) and an outlet pipe (14) are respectively fixed at two ends of the cooling tube group (9), a water turbine (15) is arranged at the bottom of the cooling tube group (9) and is fixed to the cooling tube group (9), a spray box (16) is fixed to the top of the cooling tube group (9), and the water turbine (15) corresponds to the spray box (16), a bearing is provided at the top of the inner wall of the cooling shell (2), a transmission shaft (18) is fixed to the inner ring of the bearing of the cooling shell (2), a sealed bearing (17) is provided at the top of the spray box (16) and the water turbine (15), and a transmission shaft (18) is fixed to the inner ring of the bearing of the cooling shell (2), and a sealed bearing (17) is provided at the top of the spray box (16) and the water turbine (15). The shaft (18) is fixed to the inner rings of the two sealed bearings (17), and the transmission shaft (18) extends to the inside of the water turbine (15). The transmission shaft (18) is fixed to the output shaft inside the water turbine (15). The output shaft inside the water turbine (15) rotates when water enters. The bottom of the cooling shell (2) is provided with a water inlet (10) and a water outlet (12). The feed pipe (13) and the discharge pipe (14) are respectively fixed to the water inlet (10) and the water outlet (12) at the bottom of the cooling shell (2). The cooling pipe group (9) is in a corrugated winding shape, and the cooling pipe group (9) is in contact with the inner wall of the cooling shell (2).

2. A temperature alarm device for electrical equipment according to claim 1, characterized in that: The transmission shaft (18) is provided with an alternating component for alternatingly converting the cold air and the hot air inside the cooling shell (2); The alternating assembly comprises: a centrifugal housing (19), two fan housings (21), two oblique air ducts (22), two single-head gear rods (23), a bevel gear (24) and two centrifugal blades (26); The centrifugal housing (19) is provided with bearings at both upper and lower ends, the inner ring of the bearing of the centrifugal housing (19) is fixedly connected to the transmission shaft (18), a fan housing (21) is fixed on both sides of the centrifugal housing (19), a centrifugal blade (26) is provided inside each fan housing (21), and an inclined air duct (22) is fixed on one side of the two fan housings (21), a bearing is provided on the back of the two fan housings (21), a single-head gear rod (23) is fixed to the inner ring of the bearing of the fan housing (21), and an end of the single-head gear rod (23) without a gear is fixed to the back of the centrifugal blade (26), a bevel gear (24) is arranged on the transmission shaft (18), and the two single-head gear rods (23) are meshed with the bevel gear (24).

3. A temperature alarm device for electrical equipment according to claim 1, characterized in that: A water ingress prevention component is provided on one side of the first shell (1) for preventing water from entering the first shell (1), the water ingress prevention component comprising: a sealing gasket (6), a plurality of fixing plates (7) and a plurality of fixing bolts (8); The sealing gasket (6) is arranged on one side of the first shell (1), and a slot for clamping the heat conducting sheet (5) is provided on the sealing gasket (6), and the heat conducting sheet (5) is clamped on the sealing gasket (6). A plurality of corresponding fixing sheets (7) are provided on both sides of the first shell (1) and the cooling shell (2), and the fixing sheets (7) on the first shell (1) and the cooling shell (2) are threadedly connected through a plurality of fixing bolts (8), and a groove is provided on one side of the sealing gasket (6) corresponding to the first shell (1), and one side of the first shell (1) is inserted into the groove of the sealing gasket (6).

4. A temperature alarm device for electrical equipment according to claim 1, characterized in that: The water outlet plate (28) is arranged inside the cooling shell (2), and a plurality of slots corresponding to the cooling tube group (9) are arranged on one side of the water outlet plate (28). The cooling tube group (9) is fixed on the plurality of slots of the water outlet plate (28). A placement hole is arranged on the water outlet plate (28). The turbine (15) is fixed in the placement hole of the water outlet plate (28). The water outlet plate (28) is a concave plate, and an opening is arranged at the lowest point of the water outlet plate (28). The opening at the lowest point of the water outlet plate (28) is fixedly connected to the water outlet pipe (29). A circulation port (11) is arranged at the bottom of the cooling shell (2), and the water outlet pipe (29) is fixed to the circulation port (11) on the cooling shell (2).

5. A temperature alarm device for electrical equipment according to claim 2, characterized in that: The two oblique air ducts (22) of the two fan casings (21) are arranged obliquely correspondingly, and a positioning rod (25) is provided at the bottom of each of the two oblique air ducts (22), and the bottom of each positioning rod (25) is fixedly connected to a water outlet plate (28). Wind enters from the front of the fan casing (21), moves along the inner wall of the fan casing (21) to the position of the oblique air outlet (27), and exits along the oblique air duct (22), and the oblique air ducts (22) on both sides are inclined at forty-five degrees.

6. A temperature alarm device for electrical equipment according to claim 1, characterized in that: The feed pipe (13) and the discharge pipe (14) both extend to the interior of the water tank (3); the water pump housing (4) is fixed to the top of the water tank (3); a water pump (30) is provided inside the water pump housing (4); the water pump (30) is fixed to the lower end of the discharge pipe (14); and the diameter of the discharge pipe (14) is greater than the diameter of the feed pipe (13).

7. A temperature alarm device for electrical equipment according to claim 1, characterized in that: The spray box (16) is provided with four spray nozzles (20) inside, and the four spray nozzles (20) are all inclined at forty-five degrees and fixed correspondingly to the lower half of the spray box (16). A bearing is provided at the center of the spray box (16), and the transmission shaft (18) is fixed to the inner ring of the bearing of the spray box (16).

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