Cooling tower frequency conversion starting cabinet

Abstract

The utility model belongs to the technical field of cooling towers, and particularly relates to a cooling tower frequency conversion starting cabinet, which comprises a frequency conversion starting cabinet main body and a baffle plate arranged at the top of the frequency conversion starting cabinet main body, the heat dissipation assembly comprises heat dissipation fans symmetrically arranged in the frequency conversion starting cabinet body, sliding blocks fixed to the two sides of the heat dissipation fans and a threaded lead screw in threaded connection with the interior of one set of the sliding blocks, and multiple sets of heat dissipation holes arranged at equal intervals are formed in the two sides of the frequency conversion starting cabinet body. A stepping motor is arranged on one side of the frequency conversion starting cabinet main body, a rotating rod is fixed to the output end of the stepping motor, through the arrangement of the heat dissipation assembly, heat dissipation equipment can be moved to the position where heat is large for centralized heat dissipation according to the actual heating condition of all elements in the frequency conversion starting cabinet main body, and therefore the heat dissipation efficiency is improved; local overheating is avoided, and the using effect of the device is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling towers, and in particular relates to a frequency conversion starting cabinet for a cooling tower. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to reduce the water temperature. It uses the heat exchange between water and air to generate steam, and the steam evaporates and takes away the heat to achieve the principles of evaporative heat dissipation, convection heat transfer and radiation heat transfer to dissipate the waste heat generated in industry or refrigeration and air conditioning to reduce the water temperature. The evaporative heat dissipation device ensures the normal operation of the system. The device is generally barrel-shaped, so it is called a cooling tower. The cooling tower in the prior art is controlled by a simple control cabinet.

[0003] After checking the announcement number; CN208924140U discloses an all-steel cooling tower integrated variable frequency starting cabinet, and this technology discloses "including a cabinet body, the front and back tops of the cabinet body are fixedly connected with curved plates, the left and right sides and the upper back of the cabinet body are opened with through holes, the internal gap of the through holes is matched with an exhaust fan, the exhaust fan is fixedly connected to the cabinet body through a baffle, and the front right side of the cabinet body is rotatably connected with a double-layer door and other technical solutions through the curved surface design of its top and the curved plate to achieve the purpose of rainproof, and there are four ventilation and cooling ports on both sides and the back of the all-steel cooling tower integrated variable frequency starting cabinet and an exhaust fan is installed, so as to take away the heat generated by the control cabinet during operation to the greatest extent, and avoid the short circuit and other faults of the electronic components inside the all-steel cooling tower integrated variable frequency starting cabinet at high temperature, and other technical effects";

[0004] When the above design is in use, although it can take away the heat generated by the control cabinet during operation, and avoid the short circuit and other faults of the electronic components inside the all-steel cooling tower integrated variable frequency starting cabinet at high temperature, the heat dissipation position is relatively fixed. Due to the flexible change of the local temperature of the variable frequency starting cabinet, the heat dissipation is uneven, some parts may be overheated, while some parts are at a lower temperature, resulting in poor heat dissipation effect and reducing the use effect of the device;

[0005] In order to solve the above problems, a cooling tower variable frequency starting cabinet is proposed in the present application. Utility Model Content

[0006] To solve the problems raised in the above background technology. The utility model provides a cooling tower variable frequency starting cabinet, which can move the heat dissipation device to a position with higher heat generation for centralized heat dissipation according to the actual heat generation of each component inside the main body of the variable frequency starting cabinet, thereby improving the heat dissipation efficiency, avoiding local overheating, and further improving the use effect of the device.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling tower variable frequency starting cabinet, comprising a variable frequency starting cabinet main body and a baffle installed on the top of the variable frequency starting cabinet main body, a heat dissipation component is installed on the variable frequency starting cabinet main body, the heat dissipation component comprises a heat dissipation fan arranged symmetrically inside the variable frequency starting cabinet main body, sliding blocks fixed on both sides of the heat dissipation fan and a threaded screw threadedly connected to one group of the sliding blocks, a plurality of groups of heat dissipation holes arranged equidistantly are provided on both sides of the variable frequency starting cabinet main body, a stepping motor is arranged on one side of the variable frequency starting cabinet main body, a rotating rod is fixed on the output end of the stepping motor, a bevel gear mechanism is fixed on the top of the threaded screw, the bevel gear mechanism and the rotating rod are fixedly connected, a temperature sensor is fixedly installed on one side of the variable frequency starting cabinet main body close to the heat dissipation hole, and a laser rangefinder is fixed on the lower surface of the heat dissipation fan.

[0008] As a preferred embodiment of a cooling tower frequency conversion starting cabinet of the utility model, the surface of the rotating rod is rotatably connected to a fixed block through a bearing, and the fixed block is fixedly connected to a main body of the frequency conversion starting cabinet, a mounting plate is fixed by bolts on the surface of the main body of the frequency conversion starting cabinet close to the stepper motor, the stepper motor and the mounting plate are fixedly connected, and the surfaces of both ends of the threaded screw are rotatably connected to the main body of the frequency conversion starting cabinet through bearings.

[0009] As a preferred embodiment of the utility model, a cooling tower variable frequency starting cabinet has a limit rod fixed on the inner wall of the variable frequency starting cabinet body close to the cooling fan, and a group of sliding blocks have sliding holes on their surfaces that match the limit rod, and the sliding blocks and the limit rod are slidably connected through the sliding holes.

[0010] As a preferred embodiment of the cooling tower variable frequency starting cabinet of the utility model, a protective cover is fixed to the surface of the mounting plate, and the stepper motor is located inside the protective cover.

[0011] As a preferred embodiment of the utility model, a cooling tower frequency conversion starting cabinet is provided with a sealing plate on the outside of the frequency conversion starting cabinet body near the heat dissipation hole, and symmetrically arranged fixing pins are fixed on the outer surface of the frequency conversion starting cabinet body near the sealing plate, and a spring is wound around the surface of the fixing pins, and an electromagnet 2 is fixed on the surface of the sealing plate, and an electromagnet 1 is fixed on the surface of the sliding block.

[0012] As a preferred cooling tower variable frequency starting cabinet of the utility model, the electromagnet one and the electromagnet two correspond to each other, the surface of the blocking plate is provided with a sliding hole adapted to the fixing pin, the blocking plate and the fixing pin are slidably connected through the sliding hole, and the two ends of the spring are fixedly connected to the fixing pin and the blocking plate respectively.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By setting up a heat dissipation component, the heat dissipation device can be moved to a position with higher heat generation for centralized heat dissipation according to the actual heat generation conditions of each component inside the main body of the variable frequency starting cabinet, thereby improving the heat dissipation efficiency, avoiding local overheating, and further improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a structural sectional view of the main body of the variable frequency starting cabinet in the utility model;

[0018] Figure 3 It is a structural schematic diagram of connecting parts such as a sliding block and a laser rangefinder in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of connecting parts such as a fixing pin and a blocking plate in the utility model.

[0020] In the figure: 1. Frequency conversion starting cabinet body; 2. Shielding plate; 3. Heat dissipation assembly; 301. Stepper motor; 302. Mounting plate; 303. Protective cover; 304. Rotating rod; 305. Bevel gear mechanism; 306. Threaded screw; 307. Cooling fan; 308. Sliding block; 309. Limit rod; 310. Laser rangefinder; 311. Temperature sensor; 312. Electromagnet 1; 313. Electromagnet 2; 314. Fixing pin; 315. Sealing plate; 316. Spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] like Figure 1 As shown:

[0024] A variable frequency starting cabinet for a cooling tower comprises a variable frequency starting cabinet body 1 and a shielding plate 2 installed on the top of the variable frequency starting cabinet body 1.

[0025] In this implementation scheme: the existing device (announcement number): CN208924140U discloses an all-steel cooling tower integrated frequency conversion starting cabinet. The frequency conversion starting cabinet body 1 in the present application document adopts the same technical means in this prior art. This technical means is not described one by one here. This application makes further improvements on this existing main body. For details, please refer to the disclosed technology below; to solve the technical problems existing in this prior art, as disclosed in the background technology above, "when the above-mentioned design is used, although it can take away the heat generated by the control cabinet during operation, and avoid short circuit and other faults of the electronic components inside the all-steel cooling tower integrated frequency conversion starting cabinet at high temperature, but the heat dissipation position is relatively fixed. Due to the flexible change of the local temperature of the frequency conversion starting cabinet, the heat dissipation is uneven, some parts may overheat, while some parts have a lower temperature, resulting in poor heat dissipation effect and reducing the use effect of the device". In terms of use, this problem is obviously a real problem that exists and is difficult to solve. In view of this, in order to solve this technical problem, a heat dissipation component 3 is added to the present application document, and the power equipment involved in this product is powered by an external power supply.

[0026] It should be noted that the accessories used in the frequency conversion starting cabinet body 1 have been disclosed by publication number CN208924140U, and the use effect can refer to publication number CN208924140U (that is, the "baffle, pin shaft, double-layer door, handle, cross bar, bracket and bottom plate components" disclosed in this prior art).

[0027] More specifically:

[0028] like Figure 1-Figure 4 As shown:

[0029] A heat dissipation component 3 is installed on the frequency conversion starting cabinet body 1, and the heat dissipation component 3 includes a heat dissipation fan 307 arranged symmetrically inside the frequency conversion starting cabinet body 1, a sliding block 308 fixed on both sides of the heat dissipation fan 307, and a threaded screw 306 threadedly connected to one group of sliding blocks 308. A plurality of groups of heat dissipation holes arranged equidistantly are provided on both sides of the frequency conversion starting cabinet body 1. A stepper motor 301 is arranged on one side of the frequency conversion starting cabinet body 1. A rotating rod 304 is fixed on the output end of the stepper motor 301. A bevel gear mechanism 305 is fixed on the top of the threaded screw 306. The bevel gear mechanism 305 and the rotating rod 304 are fixedly connected. A temperature sensor 311 is fixedly installed on one side of the frequency conversion starting cabinet body 1 near the heat dissipation hole, and a laser rangefinder 310 is fixed on the lower surface of the heat dissipation fan 307.

[0030] The surface of the rotating rod 304 is rotatably connected to a fixed block via a bearing, and the fixed block is fixedly connected to the frequency conversion starting cabinet body 1. The surface of the frequency conversion starting cabinet body 1 is fixed with a mounting plate 302 by bolts on one side close to the stepper motor 301. The stepper motor 301 and the mounting plate 302 are fixedly connected. The surfaces of both ends of the threaded screw 306 are rotatably connected to the frequency conversion starting cabinet body 1 via bearings.

[0031] In this embodiment: the cooling tower variable frequency starting cabinet, when in use, uses the temperature sensor 311 to monitor the temperature of various ranges inside the variable frequency starting cabinet body 1 in real time. When the temperature of a certain area monitored by the temperature sensor 311 is too high, the temperature sensor 311 sends a signal to the controller, so that the controller controls the stepper motor 301 to start, and through the operation of the stepper motor 301, the rotating rod 304 is driven to rotate, and with the rotation of the rotating rod 304, the bevel gear mechanism 305 is driven to rotate, and through the rotation of the bevel gear mechanism 305, the threaded screw 306 is driven to rotate. Since the threaded screw 306 is meshed with the sliding block 308, The sliding block 308 is driven to move downward, and the cooling fan 307 is driven to move by the sliding block 308. At this time, the laser rangefinder 310 on the cooling fan 307 monitors the downward movement distance of the cooling fan 307 in real time. When the cooling fan 307 moves to the position of the cooling hole where the temperature is too high, the laser rangefinder 310 sends a signal to the controller and stops the operation of the stepper motor 301. At this time, the cooling fan 307 stops moving. Through this operation, according to the actual heating conditions of the components inside the frequency conversion starting cabinet body 1, the cooling device can be moved to a position with higher heat generation for centralized heat dissipation, thereby improving the heat dissipation efficiency, avoiding local overheating, and further improving the use effect of the device.

[0032] It should be noted that when the laser rangefinder 310 is working, it emits one or a series of short pulsed laser beams toward the target. The laser beam reflected by the target is received by the photoelectric element. The timer measures the time from the emission to the reception of the laser beam, and calculates the distance from the observer to the target.

[0033] Going further;

[0034] In an optional embodiment, a limiting rod 309 is fixed to the inner wall of the frequency conversion starting cabinet body 1 near the cooling fan 307, and a group of sliding blocks 308 are provided with sliding holes matched with the limiting rod 309 on their surfaces, and the sliding blocks 308 and the limiting rod 309 are slidably connected through the sliding holes.

[0035] In this embodiment: a group of sliding blocks 308 slide on the surface of the limiting rod 309. Through the setting of the limiting rod 309, the cooling fan 307 can be limited, so that the cooling fan 307 moves more smoothly.

[0036] Going further;

[0037] In an optional embodiment, a protective cover 303 is fixed to the surface of the mounting plate 302 , and the stepper motor 301 is located inside the protective cover 303 .

[0038] In this embodiment, the protective cover 303 can protect the stepper motor 301 and extend the service life of the stepper motor 301 .

[0039] Going further;

[0040] In an optional embodiment, a blocking plate 315 is provided on the outside of the frequency conversion starting cabinet body 1 near the heat dissipation hole, and a symmetrically arranged fixing pin 314 is fixed on the side of the outer surface of the frequency conversion starting cabinet body 1 near the blocking plate 315, and a spring 316 is wound around the surface of the fixing pin 314, and an electromagnet 2 313 is fixed on the surface of the blocking plate 315, and an electromagnet 1 312 is fixed on the surface of the sliding block 308;

[0041] Electromagnet 1 312 corresponds to electromagnet 2 313 , and a sliding hole matching the fixing pin 314 is provided on the surface of the blocking plate 315 , and the blocking plate 315 and the fixing pin 314 are slidingly connected through the sliding hole, and the two ends of the spring 316 are fixedly connected to the fixing pin 314 and the blocking plate 315 respectively.

[0042] In this embodiment, when the cooling fan 307 moves downward, the electromagnet 1 312 and the electromagnet 2 313 on the sliding block 308 are misaligned, and the magnetic repulsion force is disengaged. At this time, the spring 316 rebounds and drives the blocking plate 315 to slide on the fixing pin 314, so that the blocking plate 315 is fitted with the surface of the frequency conversion starting cabinet body 1 to block the cooling holes to prevent dust from entering. When the cooling fan 307 corresponds to another set of cooling holes, the electromagnet 1 312 and the electromagnet 2 313 are in the power-on state. When the electromagnet 1 312 At the same time as corresponding to the electromagnet 2 313, the mutual repulsion of magnetism drives the blocking plate 315 to move, so that the blocking plate 315 is separated from the surface of the frequency conversion starting cabinet body 1, so as to facilitate the heat dissipation operation. At the same time, when it rains, the electromagnet 2 313 and the electromagnet 1 312 are in a power-off state. At this time, multiple groups of blocking plates 315 are tightly fitted with the surface of the frequency conversion starting cabinet body 1, thereby playing a blocking effect, preventing rainwater from entering and causing damage to the internal electronic components of the frequency conversion starting cabinet body 1, and further improving the use effect of the device.

[0043] The working principle and use process of the utility model: when the cooling tower variable frequency starting cabinet is in use, the temperature sensor 311 is used to monitor the temperature of each range inside the variable frequency starting cabinet body 1 in real time. When the temperature of a certain area monitored by the temperature sensor 311 is too high, the temperature sensor 311 is used to send a signal to the controller, so that the controller controls the stepper motor 301 to start, and the stepper motor 301 is operated and the rotating rod 304 is driven to rotate. At the same time, the protective cover 303 can protect the stepper motor 301 and extend the service life of the stepper motor 301. As the rotating rod 304 rotates, the bevel gear mechanism 305 is driven to rotate. Through the bevel gear mechanism 3 05 rotates, and drives the threaded screw 306 to rotate. Since the threaded screw 306 and the sliding block 308 are threadedly connected, the sliding block 308 is driven to move downward, and the cooling fan 307 is driven to move by the sliding block 308. At this time, the laser rangefinder 310 on the cooling fan 307 monitors the downward movement distance of the cooling fan 307 in real time. When the cooling fan 307 moves to the position of the heat dissipation hole where the temperature is too high, the laser rangefinder 310 sends a signal to the controller and stops the operation of the stepper motor 301. At this time, the cooling fan 307 stops moving. Through this operation, the cooling device can be moved to a position with higher heat generation according to the actual heat generation of each component inside the frequency conversion starting cabinet body 1. The heat dissipation is concentratedly carried out, thereby improving the heat dissipation efficiency, avoiding local overheating, and further improving the use effect of the device. At the same time, a group of sliding blocks 308 slide on the surface of the limit rod 309. Through the setting of the limit rod 309, the heat dissipation fan 307 can be limited, so that the heat dissipation fan 307 moves more smoothly. At the same time, when the heat dissipation fan 307 moves downward, the electromagnet 1 312 and the electromagnet 2 313 on the sliding block 308 are misaligned. At this time, the magnetic repulsion force is disengaged. At this time, the spring 316 rebounds and drives the blocking plate 315 to slide on the fixing pin 314, so that the blocking plate 315 is fitted with the surface of the frequency conversion starting cabinet body 1 to block the heat dissipation hole to prevent dust from entering. When the cooling fan 307 corresponds to another set of cooling holes, the electromagnet 1 312 and the electromagnet 2 313 are in a powered-on state. When the electromagnet 1 312 and the electromagnet 2 313 correspond to each other, the blocking plate 315 is driven to move through the mutual repulsion of magnetism, so that the blocking plate 315 is separated from the surface of the frequency conversion starting cabinet body 1, thereby facilitating the heat dissipation operation. At the same time, when it rains, the electromagnet 2 313 and the electromagnet 1 312 are in a powered-off state. At this time, multiple sets of blocking plates 315 are tightly fitted with the surface of the frequency conversion starting cabinet body 1, thereby playing a blocking effect, preventing rainwater from entering and causing damage to the internal electronic components of the frequency conversion starting cabinet body 1, and further improving the use effect of the device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cooling tower variable frequency starting cabinet, comprising a variable frequency starting cabinet body (1) and a shielding plate (2) installed on the top of the variable frequency starting cabinet body (1), characterized in that: The frequency conversion starting cabinet body (1) is provided with a heat dissipation assembly (3), the heat dissipation assembly (3) comprising heat dissipation fans (307) arranged symmetrically inside the frequency conversion starting cabinet body (1), sliding blocks (308) fixed on both sides of the heat dissipation fans (307), and threaded screws (306) threadedly connected to one group of the sliding blocks (308); a plurality of groups of heat dissipation holes arranged at equal intervals are provided on both sides of the frequency conversion starting cabinet body (1); a stepping motor (301) is provided on one side of the frequency conversion starting cabinet body (1); a rotating rod (304) is fixed on the output end of the stepping motor (301); a bevel gear mechanism (305) is fixed on the top end of the threaded screw (306); the bevel gear mechanism (305) and the rotating rod (304) are fixedly connected; a temperature sensor (311) is fixedly installed on one side of the frequency conversion starting cabinet body (1) close to the heat dissipation holes; and a laser rangefinder (310) is fixed on the lower surface of the heat dissipation fan (307).

2. The cooling tower frequency conversion starter cabinet according to claim 1 is characterized in that: The surface of the rotating rod (304) is rotatably connected to a fixed block via a bearing, and the fixed block is fixedly connected to the frequency conversion starting cabinet body (1). The surface of the frequency conversion starting cabinet body (1) is fixed to a mounting plate (302) via bolts on a side close to the stepping motor (301), and the stepping motor (301) and the mounting plate (302) are fixedly connected. The surfaces of both ends of the threaded screw rod (306) are rotatably connected to the frequency conversion starting cabinet body (1) via bearings.

3. The cooling tower frequency conversion starter cabinet according to claim 2 is characterized in that: A limiting rod (309) is fixed on the inner wall of the frequency conversion starting cabinet body (1) near the cooling fan (307), and a sliding hole matching the limiting rod (309) is opened on the surface of one group of the sliding blocks (308), and the sliding blocks (308) and the limiting rod (309) are slidably connected through the sliding holes.

4. The cooling tower frequency conversion starter cabinet according to claim 3 is characterized in that: A protective cover (303) is fixed on the surface of the mounting plate (302), and the stepping motor (301) is located inside the protective cover (303).

5. The cooling tower frequency conversion starter cabinet according to claim 4 is characterized in that: A blocking plate (315) is provided on the outside of the frequency conversion starting cabinet body (1) near the heat dissipation hole, and symmetrically arranged fixing pins (314) are fixed on the side of the outer surface of the frequency conversion starting cabinet body (1) near the blocking plate (315), and a spring (316) is wound around the surface of the fixing pin (314), a second electromagnet (313) is fixed on the surface of the blocking plate (315), and a first electromagnet (312) is fixed on the surface of the sliding block (308).

6. The cooling tower frequency conversion starter cabinet according to claim 5 is characterized in that: The electromagnet one (312) corresponds to the electromagnet two (313); a sliding hole matching the fixing pin (314) is provided on the surface of the blocking plate (315); the blocking plate (315) and the fixing pin (314) are slidably connected via the sliding hole; and the two ends of the spring (316) are fixedly connected to the fixing pin (314) and the blocking plate (315) respectively.

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