Temperature difference circulation heating constant-pressure boosting frequency conversion control cabinet

Abstract

The utility model discloses a temperature difference circulation heating constant-pressure pressurization frequency conversion control cabinet which comprises a control cabinet body and a sliding table installed at the bottom of the control cabinet body in a sliding mode, a frequency conversion pressurization unit is installed at the top end of the sliding table, and an electric protection device and a frequency conversion driver are installed on the inner wall of one side of the control cabinet body. A PLC control panel electrically connected with the input end of the frequency conversion booster unit is installed on one side of the surface of the control cabinet body. According to the utility model, through the moving-out mechanism of the sliding table and the variable-frequency booster unit, maintenance personnel can easily contact the variable-frequency booster unit and other internal components, the fault diagnosis is more direct and efficient than the fault diagnosis in a fixed control cabinet, and rapid problem positioning and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of control cabinets, in particular to a temperature difference circulation heating constant pressure boosting frequency conversion control cabinet. Background Art

[0002] The constant pressure booster variable frequency control cabinet and its water supply and heating device represent an efficient and intelligent control technology in modern heating systems. It realizes precise control of pressure, flow and temperature in heating and water supply systems by comprehensively using variable frequency speed regulation, pressure and temperature monitoring, and automatic adjustment technology. The core of these systems lies in their intelligent control unit, which is usually a programmable logic controller (PLC) or microprocessor, which is responsible for receiving real-time data from various sensors (such as pressure sensors, flow sensors and temperature sensors), and according to these data and user-set parameters, it controls the frequency converter to adjust the running speed of the water pump, thereby accurately controlling the pressure and flow of the heating and water supply system, ensuring efficient and stable operation of the system;

[0003] For example, a multiple water pump variable frequency interconnected constant pressure circulating water supply and cooling system disclosed in the authorization announcement number CN219797613U includes a cooling water supply pool, a hot water recovery pool, a frequency conversion control cabinet, a cooling component and a water supply component. The cooling water supply pool and the hot water recovery pool are arranged at intervals, and the water supply component and the cooling component are arranged at intervals on the top of the cooling water supply pool and the hot water recovery pool, respectively. The water supply component is connected to the frequency conversion control cabinet, and the hot water generated after the equipment and facilities are cooled is promptly cooled by the cooling component and the water supply component, and cooling water is continuously provided to the equipment and facilities. The hot water generated after cooling is recycled to avoid wasting water resources. However, the frequency conversion control cabinet in this technical solution needs to arrange various pipes, water tanks, pump bodies and other structures inside itself. At this time, the staff needs to enter the interior of the frequency conversion control cabinet to operate when repairing parts. Since all components are integrated in a compact space, regular inspection and maintenance become more difficult. In particular, the inspection and replacement of internal components of the frequency conversion control cabinet may require the complete removal of some components, which not only increases the workload, but also brings trouble to the staff's daily inspection and maintenance work. Utility Model Content

[0004] The purpose of the utility model is to provide a temperature difference circulation heating constant pressure boost frequency conversion control cabinet, which can enable the slide loaded with the variable frequency boost unit to be actively moved out of the control cabinet body through components such as a worm gear drive unit and a gear rack removal structure, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a temperature difference circulation heating constant pressure boost frequency conversion control cabinet, comprising a control cabinet body and a slide slidably installed at the bottom of the control cabinet body, and a variable frequency boost unit is installed on the top of the slide, an electrical protection device and a variable frequency driver are installed on the inner wall of one side of the control cabinet body, a PLC control panel electrically connected to the input end of the variable frequency boost unit is installed on one side of the surface of the control cabinet body, a right angle frame is fixed on one side of the top of the slide, a rack is fixed on the inner wall of one side of the control cabinet body, and a worm gear drive unit is arranged on the top of the rack, a horizontal axis is rotatably installed on the inner wall of the control cabinet body below the rack, one end of the horizontal axis is installed with a gear rack removal structure for driving the right angle frame and the slide to move in the Y-axis direction, the worm gear drive unit is used to drive the horizontal axis to rotate, and the input end of the worm gear drive unit is electrically connected to the output end of the PLC control panel.

[0006] Preferably, dovetail rails are fixed on both sides of the bottom of the control cabinet body, and sliding sleeves that slidably cooperate with the dovetail rails are fixed on both sides of the bottom end of the slide, and the sliding sleeves and the dovetail rails are of equal length.

[0007] Preferably, the gear rack removal structure includes a bevel gear fixed to one end of the horizontal axis surface, and a bevel rack fixed to the outer wall of one side of the right-angle frame, and the bevel rack and the bevel gear are meshed with each other.

[0008] Preferably, the worm gear drive unit includes a servo motor installed on the top of the frame, and a worm gear transmission structure installed on the output end of the servo motor for driving the horizontal axis to rotate.

[0009] Preferably, the variable frequency booster unit includes a constant temperature heating water tank installed on one side of the top of the slide, and a horizontal liquid outlet pipe installed at the liquid outlet of the constant temperature heating water tank, a temperature sensor is installed on one side of the top of the constant temperature heating water tank, variable frequency multistage pumps are installed on both sides of the top of the slide, the liquid inlet end of the variable frequency multistage pump is connected to the liquid outlet of the horizontal liquid outlet pipe, a right-angle guide pipe is installed at the liquid outlet end of the variable frequency multistage pump, a horizontal liquid collecting pipe is installed at the top of the right-angle guide pipe, and a pressure sensor is installed on one side of the top of the horizontal liquid collecting pipe.

[0010] Preferably, an air-cooled radiator is installed on one side of the top of the slide, and a liquid inlet copper tube is installed at the liquid inlet end of the air-cooled radiator, and one end of the liquid inlet copper tube is interconnected with the liquid outlet of the horizontal liquid collecting pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are: this temperature difference circulation heating constant pressure boost frequency conversion control cabinet is equipped with a slide and a gear rack removal structure and other structures that cooperate with each other. When the system needs to check or diagnose a fault, the slide and the frequency conversion boost unit removal mechanism allow maintenance personnel to easily access the frequency conversion boost unit and other internal components, which is more direct and efficient than fault diagnosis in a fixed control cabinet, and helps to quickly locate the problem and perform repairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a side view structural schematic diagram of the utility model;

[0014] Figure 3 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0015] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0016] In the figure: 1. control cabinet body; 2. PLC control panel; 3. electrical protection device; 4. frequency conversion drive; 5. slide; 6. right-angle frame; 7. rack; 8. worm gear drive unit; 9. horizontal axis; 10. gear rack removal structure; 1001. bevel gear; 1002. bevel rack; 11. air-cooled radiator; 1101. liquid inlet copper pipe; 12. constant temperature heating water tank; 13. horizontal liquid outlet pipe; 14. frequency conversion multi-stage pump; 15. right-angle guide pipe; 16. horizontal liquid collecting pipe; 17. pressure sensor; 18. temperature sensor. DETAILED DESCRIPTION

[0017] 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. 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.

[0018] See also Figure 1-4 The utility model provides an embodiment: a temperature difference cycle heating constant pressure boost frequency conversion control cabinet, comprising a control cabinet body 1 and a slide 5 slidably mounted at the bottom of the control cabinet body 1, and a variable frequency boost unit is installed on the top of the slide 5, both sides of the bottom of the control cabinet body 1 are fixed with dovetail rails, both sides of the bottom of the slide 5 are fixed with sliding sleeves that slide with the dovetail rails, and the sliding sleeves and the dovetail rails are of equal length;

[0019] An electrical protection device 3 and a frequency conversion driver 4 are installed on the inner wall of one side of the control cabinet body 1. The electrical protection device 3 includes a circuit breaker, a contactor, and a relay, etc., which provide a stable power supply for the control cabinet and other electrical components by preventing dangers such as current overload, short circuit, and electrical fire;

[0020] A PLC control panel 2 electrically connected to the input end of the variable frequency booster unit is installed on one side of the surface of the control cabinet body 1, a right angle frame 6 is fixed on one side of the top of the slide 5, a rack 7 is fixed on the inner wall of one side of the control cabinet body 1, and a worm gear drive unit 8 is arranged on the top of the rack 7, a horizontal axis 9 is rotatably installed on the inner wall of the control cabinet body 1 below the rack 7, and a gear rack removal structure 10 for driving the right angle frame 6 and the slide 5 to move in the Y-axis direction is installed at one end of the horizontal axis 9, the worm gear drive unit 8 is used to drive the horizontal axis 9 to rotate, and the input end of the worm gear drive unit 8 is electrically connected to the output end of the PLC control panel 2;

[0021] The gear rack removal structure 10 includes a bevel gear 1001 fixed on one end of the surface of the horizontal axis 9, and a bevel rack 1002 fixed on the outer wall of one side of the right angle frame 6. The bevel rack 1002 and the bevel gear 1001 are meshed with each other. The worm gear drive unit 8 includes a servo motor installed on the top of the frame 7, and a worm gear transmission structure installed at the output end of the servo motor for driving the horizontal axis 9 to rotate. The rotary power of the worm gear drive unit 8 is transmitted to the horizontal axis 9, so that the horizontal axis 9 drives the right angle frame 6 and the slide 5 to move in the Y-axis direction through the gear rack removal structure 10. At this time, the slide 5 and the variable frequency supercharger unit loaded on the slide 5 can be gradually moved out of the control cabinet body 1 together;

[0022] The variable frequency booster unit includes a constant temperature heating water tank 12 installed on one side of the top of the slide 5, and a horizontal liquid outlet pipe 13 installed at the liquid outlet of the constant temperature heating water tank 12. The constant temperature heating water tank 12 is used to provide and adjust the temperature of the heating water to ensure that the water temperature output by the heating system meets the preset constant temperature requirements;

[0023] A temperature sensor 18 is installed on one side of the top of the constant temperature heating water tank 12, and a variable frequency multistage pump 14 is installed on both sides of the top of the slide 5. The liquid inlet end of the variable frequency multistage pump 14 is connected to the liquid outlet of the horizontal liquid outlet pipe 13. The variable frequency multistage pump 14 is controlled by a variable frequency driver and can adjust the operating speed according to the real-time needs of the system, so as to maintain a constant pressure in the heating system and ensure the continuity and stability of the heating. A right-angle guide pipe 15 is installed at the liquid outlet end of the variable frequency multistage pump 14, and a horizontal liquid collecting pipe 16 is installed at the top of the right-angle guide pipe 15. A pressure sensor 17 is installed on one side of the top of the horizontal liquid collecting pipe 16. The variable frequency multistage pump 14 actively pumps the hot water in the horizontal liquid outlet pipe 13 to the horizontal liquid collecting pipe 16 through the right-angle guide pipe 15. In this process, the pressure sensor 17 actively detects the water pressure in the horizontal liquid collecting pipe 16.

[0024] The PLC control panel 2 executes a control algorithm to adjust the operation of the variable frequency drive 4, the constant temperature heating water tank 12, and the variable frequency multi-stage pump 14 according to the data collected from the pressure sensor 17 and the temperature sensor 18. At this time, the variable frequency drive 4 adjusts the operating speed of the variable frequency multi-stage pump 14 and automatically adjusts the power output according to the real-time heating demand, thereby ensuring that the heating system can maintain a constant pressure under different loads, while improving energy efficiency and reducing energy consumption;

[0025] An air-cooled radiator 11 is installed on one side of the top of the slide 5, and a liquid inlet copper tube 1101 is installed at the liquid inlet end of the air-cooled radiator 11. One end of the liquid inlet copper tube 1101 is interconnected with the liquid outlet of the horizontal collecting pipe 16. The horizontal collecting pipe 16 delivers hot water to the liquid inlet copper tube 1101 and the air-cooled radiator 11, and the air-cooled radiator 11 delivers hot water to the next level of water load. The pressure sensor 17 and the temperature sensor 18 provide accurate real-time data to the PLC control panel 2, so that the control system can adjust the operating parameters based on the actual heating demand. When the water temperature is too high, the air-cooled radiator 11 actively cools the high-temperature medium flowing through itself, thereby achieving the purpose of constant heating pressure.

[0026] When the embodiment of the present application is in use, the staff first opens the cabinet door on the control cabinet body 1, and then turns on the worm gear drive unit 8 by opening the PLC control panel 2 to work, so that the rotational power of the worm gear drive unit 8 is transmitted to the horizontal axis 9, so that the horizontal axis 9 drives the right-angle frame 6 and the slide 5 to move in the Y-axis direction through the gear rack removal structure 10. At this time, the slide 5 and the variable frequency booster unit loaded on the slide 5 can be gradually moved out of the control cabinet body 1 together. Through the removal mechanism of the slide 5 and the variable frequency booster unit, maintenance personnel can easily access the variable frequency booster unit and other internal components without entering the narrow control cabinet. When the system needs to check or diagnose a fault, the various parts of the unit can be directly observed and accessed by removing the slide 5. This is more direct and efficient than fault diagnosis in a fixed control cabinet, which helps to quickly locate the problem and perform repairs. During this process, the self-locking function of the worm gear drive unit 8 can maintain the moving position of the slide 5 and the variable frequency booster unit to ensure its odor stability.

Claims

1. A temperature difference cycle heating constant pressure boost frequency conversion control cabinet, characterized in that: The invention comprises a control cabinet body (1) and a slide (5) slidably mounted at the bottom of the control cabinet body (1), wherein a variable frequency booster unit is mounted on the top of the slide (5), an electrical protection device (3) and a variable frequency driver (4) are mounted on the inner wall of one side of the control cabinet body (1), a PLC control panel (2) electrically connected to the input end of the variable frequency booster unit is mounted on one side of the surface of the control cabinet body (1), a right angle bracket (6) is fixed on one side of the top of the slide (5), and a A frame (7) is provided, and a worm gear drive unit (8) is arranged at the top of the frame (7); a horizontal axis (9) is rotatably mounted on the inner wall of a control cabinet body (1) below the frame (7); one end of the horizontal axis (9) is mounted with a gear rack removal structure (10) for driving a right-angle frame (6) and a slide table (5) to move in the Y-axis direction; the worm gear drive unit (8) is used to drive the horizontal axis (9) to rotate; and the input end of the worm gear drive unit (8) is electrically connected to the output end of the PLC control panel (2).

2. A temperature difference cycle heating constant pressure boost frequency conversion control cabinet according to claim 1, characterized in that: Dovetail rails are fixed on both sides of the bottom of the control cabinet body (1), and sliding sleeves that slide with the dovetail rails are fixed on both sides of the bottom of the slide table (5), and the sliding sleeves and the dovetail rails are of equal length.

3. A temperature difference cycle heating constant pressure boost frequency conversion control cabinet according to claim 1, characterized in that: The gear rack removal structure (10) comprises a bevel gear (1001) fixed to one end of the surface of the horizontal axis (9), and a bevel gear rack (1002) fixed to an outer wall of one side of the right-angle frame (6), and the bevel gear rack (1002) and the bevel gear (1001) are meshed with each other.

4. A temperature difference cycle heating constant pressure boost frequency conversion control cabinet according to claim 1, characterized in that: The worm gear drive unit (8) comprises a servo motor mounted on the top of the frame (7), and a worm gear transmission structure mounted on the output end of the servo motor and used for driving the horizontal shaft (9) to rotate.

5. A temperature difference cycle heating constant pressure boost frequency conversion control cabinet according to claim 1, characterized in that: The variable frequency booster unit comprises a constant temperature heating water tank (12) installed on one side of the top of the slide (5), and a horizontal liquid outlet pipe (13) installed at the liquid outlet of the constant temperature heating water tank (12), a temperature sensor (18) is installed on one side of the top of the constant temperature heating water tank (12), and variable frequency multistage pumps (14) are installed on both sides of the top of the slide (5), the liquid inlet end of the variable frequency multistage pump (14) is connected to the liquid outlet of the horizontal liquid outlet pipe (13), and the liquid outlet end of the variable frequency multistage pump (14) is installed with a right-angle guide pipe (15), and the top of the right-angle guide pipe (15) is installed with a horizontal liquid collecting pipe (16), and the top of the horizontal liquid collecting pipe (16) is installed with a pressure sensor (17) on one side.

6. A temperature difference cycle heating constant pressure boost frequency conversion control cabinet according to claim 5, characterized in that: An air-cooled radiator (11) is installed on one side of the top end of the slide (5); a liquid inlet copper tube (1101) is installed at the liquid inlet end of the air-cooled radiator (11); one end of the liquid inlet copper tube (1101) is interconnected with the liquid outlet of the horizontal liquid collecting pipe (16).

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