Variable frequency water pump control cabinet

Abstract

The utility model discloses a variable frequency water pump control cabinet, relates to the technical field of control cabinets, and provides the following scheme aiming at the problem of high energy consumption caused by the fact that the running frequency of a water pump cannot be adjusted in real time according to actual requirements in the prior art: the variable frequency water pump control cabinet comprises a cabinet body, four corners of the upper end of the cabinet body are connected with hanging rings, and a plurality of vertical rods are arranged in the cabinet body; a relay is installed at the upper end of one side of the vertical rod through screws, fuses are arranged below the relay at intervals, the fuses and the lower end of one side of the vertical rod are connected with a frequency converter, the frequency converter is connected with a water pump motor, one side of the cabinet body is connected with a cabinet door, and fans are installed at the upper end and the lower end of the cabinet door. And a controller is arranged in the middle of the cabinet door. The energy-saving water pump cabinet is novel in structure, the rotating speed of the water pump can be accurately adjusted according to actual requirements through the frequency converter installed in the cabinet body, the water pump is prevented from running in a low-efficiency area, energy consumption is remarkably reduced, and the energy-saving purpose is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of control cabinets, in particular to a variable-frequency water pump control cabinet. Background Art

[0002] In the existing water supply and drainage system, the water pump control cabinet usually adopts the traditional fixed-frequency control method. This control method is characterized by simplicity and directness, which is convenient for maintenance and management. However, its limitations are also obvious, and there are the following deficiencies: mainly reflected in the inability to adjust the operating frequency of the water pump in real time according to actual needs. When the demand of the water supply system changes, the fixed-frequency water pump can only adapt to this change by starting or stopping, resulting in frequent switching of the working state of the water pump, which not only consumes a large amount of energy, but also aggravates equipment wear and shortens the service life of the equipment. Content of the Utility Model

[0003] A variable-frequency water pump control cabinet proposed by the utility model solves the existing problems.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme: a variable-frequency water pump control cabinet, including a cabinet body, a plurality of vertical rods are installed inside the cabinet body, and a plurality of horizontal plates are connected between the vertical rods. A plurality of frequency converters are installed between two of the horizontal plates, and the frequency converters are connected to the water pump motor for controlling the working power frequency of the water pump motor.

[0005] Preferably, a cabinet door is connected to one side of the cabinet body. A groove is opened on the side of the cabinet door close to the cabinet body, and a sealing strip is installed around the groove. A plurality of indicator lights are installed above the inside of the cabinet door, and a system map is arranged in the middle of one side of the cabinet door. Fans are installed at the upper and lower ends of the cabinet door, and a controller is arranged in the middle of the cabinet door.

[0006] Preferably, a relay is installed on one side of the top horizontal plate through screws, and a fuse is arranged at an interval below the relay.

[0007] Preferably, the relay is installed on the first mounting strip, and both ends of the first mounting strip penetrate through the fixing box and are connected to the vertical rod, and both ends of the fixing box extend into the vertical rod.

[0008] Preferably, the fuse is installed on the second mounting strip, and the second mounting strip is installed on one side of the second horizontal plate, and both ends of the second horizontal plate are connected to the vertical rod.

[0009] Preferably, a heightening block is arranged below the cabinet body, and two rows of ventilation holes are symmetrically opened on the side of the cabinet body away from the cabinet door.

[0010] Preferably, two connecting rods are respectively connected to the upper and lower sides of both inner walls of the cabinet body, and a vertical rod is connected to one side of the connecting rod.

[0011] Preferably, one side of the lower end of the vertical rod is connected with a first horizontal plate, and a grounding row and a zero connection row are respectively arranged on one side of the first horizontal plate.

[0012] Preferably, the two lower ends of the frequency converter are connected with folding plates, and one side of the folding plate is connected with a third horizontal plate, and both ends of the two third horizontal plates are connected with the vertical rod.

[0013] Preferably, lifting rings are connected to the four corners of the upper end of the cabinet body.

[0014] The beneficial effects of the present utility model are as follows: The device can accurately adjust the speed of the water pump according to actual needs through the frequency converter installed inside the cabinet body, avoid the water pump from operating in the low-efficiency area, significantly reduce energy consumption, and achieve the purpose of energy conservation; by the controller, the operating state of the water pump is monitored in real time, and with the soft start function in the frequency converter, the impact of the starting current on the power grid is reduced, and the service life of the water pump and the motor is prolonged. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model.

[0016] Figure 2 It is a schematic structural diagram of another perspective of the present utility model.

[0017] Figure 3 It is a schematic diagram of the internal structure of the cabinet body of the present utility model.

[0018] Figure 4 It is a schematic diagram of the installation structure of the internal components of the present utility model.

[0019] Reference numerals in the figures: 1, cabinet body; 101, lifting ring; 102, vertical rod; 103, cabinet door; 104, heightening block; 105, ventilation hole; 106, connecting rod; 107, sealing strip; 108, first horizontal plate; 2, relay; 201, first mounting strip; 202, fixed box; 3, fuse; 301, second mounting strip; 302, second horizontal plate; 4, frequency converter; 401, folding plate; 402, third horizontal plate; 5, fan; 6, controller; 7, indicator light; 8, system sticker; 901, grounding row; 902, zero connection row. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Refer to Figures 1 - 4, a variable-frequency water pump control cabinet, including a cabinet body 1. At the four corners of the upper end of the cabinet body 1, there are hanging rings 101 connected. Inside the cabinet body 1, several vertical rods 102 are installed. At the upper end of one side of the vertical rod 102, a relay 2 is installed by screws, and a fuse 3 is arranged at intervals below the relay 2. At the lower end of one side of the vertical rod 102, a frequency converter 4 is connected. The frequency converter 4 is connected to the water pump motor, and the frequency converter 4 is used to control the working power frequency of the water pump motor to achieve precise control of the water pump output. One side of the cabinet body 1 is connected with a cabinet door 103. At the upper and lower ends of the cabinet door 103, fans 5 are installed. In the middle of the cabinet door 103, a controller 6 is arranged.

[0022] Refer to Figure 3 , the cabinet body 1 is a rectangular box structure. Below the cabinet body 1, there are elevation blocks 104 arranged. On the side of the cabinet body 1 far from the cabinet door 103, two rows of ventilation holes 105 are symmetrically opened. The ventilation holes 105 adopt louvered ventilation openings. On both sides of the inner wall of the cabinet body 1, two connecting rods 106 are respectively connected up and down. On one side of the connecting rod 106, a vertical rod 102 is connected. On the side of the cabinet door 103 close to the cabinet body 1, a groove is opened, and a sealing strip 107 is installed around the groove. Above the cabinet door 103, multiple indicator lights 7 are installed. In the middle of one side of the cabinet door 103, a system map 8 is arranged. The system map 8 is the overall design drawing of the control cabinet and is pasted on the inner side of the cabinet door 103 for easy viewing by operators. The cabinet body 1 adopts a standardized design, and the appearance is similar, which is convenient for installation and maintenance. Inside the cabinet body 1, the electrical components are fixedly installed through the vertical rod 102 and the cabinet door 103. Through the fans 5 arranged above and below the cabinet door 103, the working temperature of the components is effectively reduced, and the service life is prolonged.

[0023] Refer to Figure 4 , on one side of the lower end of the vertical rod 102, a first cross plate 108 is connected. On one side of the first cross plate 108, a grounding bar 901 and a zero connection bar 902 are respectively arranged. The relay 2 is installed on one side of the first installation strip 201, and both ends of the first installation strip 201 penetrate through the fixed box 202 and are connected to the vertical rod 102. The fixed box 202 is a rectangular frame structure, and both ends of the fixed box 202 extend into the vertical rod 102. The fuse 3 is installed on one side of the second installation strip 301, and the second installation strip 301 is installed on one side of the second cross plate 302. Both ends of the second cross plate 302 are connected to the inside of the vertical rod 102. At the lower two ends of the frequency converter 4, folding plates 401 are connected, and on one side of the folding plate 401, a third cross plate 402 is connected. Both ends of the two third cross plates 402 are connected to the vertical rod 102. The frequency converter 4 realizes stepless adjustment of the motor speed by changing the power frequency, so that the water pump system can output appropriate water volume according to actual needs and avoid energy waste.

[0024] Working principle: First, the relay 2, fuse 3, and frequency converter 4 are installed inside the cabinet 1 through the connecting rod 106 and vertical rod 102. Taking the industrial application scenario as an example, the cabinet 1 is lifted by the lifting ring 101 and placed in the water pump system of the production line. By presetting the machine to monitor the flow demand of the production line in real time, the controller 6 calculates the optimal speed, and the controller 6 transmits the signal to the frequency converter 4. After receiving the signal, the frequency converter 4 adjusts the speed of the water pump motor according to the control instruction, enabling the water pump to operate at the best efficiency, thus achieving the purpose of energy conservation and consumption reduction.

[0025] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A variable-frequency water pump control cabinet, comprising a cabinet body (1), characterized in that, Inside the cabinet body (1), several vertical rods (102) are installed, and several cross plates are connected between the vertical rods (102). Among them, several frequency converters (4) are installed between two of the cross plates. The frequency converters (4) are connected to the water pump motor and are used to control the working power frequency of the water pump motor. One side of the cabinet body (1) is connected with a cabinet door (103). A groove is provided on the side of the cabinet door (103) close to the cabinet body (1), and a sealing strip (107) is installed around the groove. Above the inside of the cabinet door (103), multiple indicator lights (7) are installed, and a system map (8) is arranged in the middle of one side of the cabinet door (103). Fans (5) are installed at the upper and lower ends of the cabinet door (103), and a controller (6) is arranged in the middle of the cabinet door (103). On both sides of the inner wall of the cabinet body (1), two connecting rods (106) are respectively connected up and down. One side of the connecting rod (106) is connected with a vertical rod (102). One side of the lower end of the vertical rod (102) is connected with a first cross plate (108). A grounding bar (901) and a zero connection bar (902) are respectively arranged on one side of the first cross plate (108). Folding plates (401) are connected to the lower and upper ends of the frequency converter (4), and one side of the folding plate (401) is connected with a third cross plate (402). Both ends of the two third cross plates (402) are connected to the vertical rod (102).

2. The variable-frequency water pump control cabinet according to claim 1, wherein, A relay (2) is installed on one side of the top cross plate by screws, and a fuse (3) is arranged at an interval below the relay (2).

3. A variable frequency water pump control cabinet according to claim 2, characterized in that, The relay (2) is installed on a first mounting strip (201), and both ends of the first mounting strip (201) penetrate through a fixing box (202) and are connected to the vertical rod (102). Both ends of the fixing box (202) extend into the vertical rod (102).

4. A variable-frequency water pump control cabinet according to claim 3, characterized in that The fuse (3) is installed on a second mounting strip (301), and the second mounting strip (301) is installed on one side of a second cross plate (302). Both ends of the second cross plate (302) are connected to the vertical rod (102).

5. A variable frequency water pump control cabinet according to claim 1, characterized in that, A heightening block (104) is arranged below the cabinet body (1), and two rows of ventilation holes (105) are symmetrically provided on the side of the cabinet body (1) away from the cabinet door (103).

6. The variable frequency water pump control cabinet according to claim 1, characterized in that, Lifting rings (101) are connected to the four corners of the upper end of the cabinet body (1).

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