Strong and weak current separated control electric cabinet structure of magnetic suspension water chilling unit

Abstract

The utility model belongs to the technical field of magnetic suspension water chilling units, and discloses a strong and weak current separation control electric cabinet structure of a magnetic suspension water chilling unit, which comprises a cabinet body, and a middle partition plate is vertically arranged at the middle position in the cabinet body along the height direction of the cabinet body. The internal space of the cabinet body is equally divided into a strong current chamber and a weak current chamber by the middle partition plate, a strong current backboard is installed at the position, close to the strong current chamber, of one side face of the cabinet body in a sealed mode, a weak current backboard is installed at the position, close to the weak current chamber, of one side face of the cabinet body in a sealed mode, and the strong current backboard is fixedly connected with the weak current backboard. The middle partition plate is perpendicular to the strong current back plate and the weak current back plate, and the other side face of the cabinet body is hinged to a door assembly. According to the utility model, the overall structure is simple, strong-current components and weak-current components in the magnetic suspension water chilling unit can be placed in the same control electric cabinet, the strong-current components and the weak-current components are ensured not to interfere with each other, the normal operation of a weak-current circuit is ensured, and the use effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic levitation chillers, and specifically relates to a strong and weak electricity separated control electric cabinet structure for a magnetic levitation chiller. Background Technique

[0002] With the improvement of energy conservation and environmental protection awareness and the development of magnetic levitation technology, the magnetic levitation chiller technology has become increasingly mature and is widely used in fields such as building air conditioning systems, industrial refrigeration, medicine and food, etc. It is mainly used to adjust the temperature of process water and cool down space equipment, making great contributions to the energy conservation and emission reduction of enterprises. And the magnetic levitation chiller is also undergoing a new industrial revolution. Along with the application of compressors, more problems require professional technologies and devices to optimize.

[0003] The existing traditional control electrical appliances of chillers mainly include main circuit breakers, control circuits, power distribution modules, protection devices, signal input and output modules, etc. The electrical components of the existing chillers are arranged in the same control electric cabinet. The electrical components need to run continuously to ensure the normal operation of the chiller. The equipment inside the electric cabinet is diverse. The continuous operation of the strong electricity equipment generates problems such as electromagnetic interference and surges on the weak electricity, affecting the normal operation of the weak electricity circuit, resulting in a decrease in the reliability of the control system, an increase in the failure rate of electrical components, and affecting the stable operation of the unit.

[0004] In addition, to solve the above problems, usually the strong electricity equipment and the weak electricity equipment are placed in different control cabinets respectively. However, this situation leads to an increase in the overall size of the control cabinet. At the same time, since the connecting wires are exposed outside, there are certain potential safety hazards.

[0005] For example, a Chinese patent with the application number 2021212428256 discloses a combined strong and weak electricity control cabinet, including a cabinet body: an inlet port is provided on the side wall of the cabinet body, an outlet port is provided on the top of the cabinet body, a cabinet door is hinged on the outer wall of the cabinet body, the inner wall of the cabinet body is connected with a mounting plate through a sliding assembly and drives the mounting plate to move along the depth direction of the cabinet body, a wire winding assembly is arranged on the inner wall of the cabinet body, and a wire clamping assembly that can stretch along its length direction is arranged on the wire winding assembly; in the utility model, this control cabinet adopts the wire winding method of the wire winding assembly, which can play a role in directionally winding the too long connecting wires after wiring, avoiding the contact between the too long connecting wires and components after they droop and affecting the operation safety. Combined with the clamping structure of the wire clamping assembly, it can play a role in strengthening and preventing the detachment of the connecting wires after winding, avoiding the phenomenon of loosening of the connecting wires after winding, effectively improving the winding stability of the connecting wires, and improving the operation safety of the control cabinet.

[0006] However, in this utility model, the strong electricity equipment and the weak electricity equipment are placed in one area, and it cannot solve the problems of electromagnetic interference and surges generated by the continuous operation of the strong electricity equipment on the weak electricity. Summary of the Utility Model

[0007] The main technical problem to be solved by the present utility model is to provide a strong and weak electricity separated control electric cabinet structure for a magnetic levitation chiller, which can place strong electricity components and weak electricity components in the same control electric cabinet in the magnetic levitation chiller, ensure that the two do not interfere with each other, ensure the normal operation of the weak electricity circuit, improve the reliability of the control system, reduce the failure rate of electrical components, and at the same time reduce the overall volume of the control electric cabinet.

[0008] To solve the above technical problems, the present utility model provides the following technical solutions:

[0009] A strong and weak electricity separated control electric cabinet structure for a magnetic levitation chiller, including a cabinet body. An intermediate partition is vertically arranged along the height direction of the cabinet body at the middle position inside the cabinet body. The intermediate partition divides the internal space of the cabinet body into two spaces, namely a strong electricity chamber and a weak electricity chamber. A strong electricity backplane is hermetically installed at a position on one side of the cabinet body close to the strong electricity chamber, and a weak electricity backplane is hermetically installed at a position on one side of the cabinet body close to the weak electricity chamber. The strong electricity backplane and the weak electricity backplane are fixedly connected. The intermediate partition is vertically arranged with the strong electricity backplane and the weak electricity backplane. A door assembly is hinged on the other side of the cabinet body.

[0010] The following is a further optimization of the above technical solution by the present utility model:

[0011] The cabinet body includes a bottom plate. First side plates and second side plates are respectively vertically arranged on both sides of the bottom plate in the length direction. The first side plates and the second side plates are arranged in parallel with the intermediate partition at the same time. A same top plate is fixedly connected to the ends of the first side plates and the second side plates far from the bottom plate.

[0012] Further optimization: One end of the intermediate partition is fixedly installed on the bottom plate, and the other end of the intermediate partition is fixedly installed on the top plate.

[0013] Further optimization: A first fan hole is opened at a position on the first side plate close to the bottom plate, and a wire inlet hole is opened at a position on the first side plate close to the first fan hole.

[0014] Further optimization: At least two second fan holes are arranged at intervals on the second side plate.

[0015] Further optimization: The door assembly includes a first door hinged on one side of the end face of the cabinet body far from the strong electricity backplane, and the first door is located at a position close to the strong electricity chamber at the same time;

[0016] A second door is hinged on the other side of the end face of the cabinet body far from the strong electricity backplane, and the second door is located at a position close to the weak electricity chamber at the same time;

[0017] The first door and the second door are symmetrically arranged with the plane where the intermediate partition is located as the symmetry plane.

[0018] Further optimization: wire passing holes are formed in the middle partition near the positions of the high-voltage backplane and the low-voltage backplane, and rubber rings are movably placed at the edge positions of the wire passing holes.

[0019] Further optimization: a display screen hole is formed in the second door near the top plate position, and a plurality of button holes are formed in the second door at intervals near the display screen hole.

[0020] Further optimization: door lock assemblies are fixedly installed on one side of the first door and the second door close to each other.

[0021] The control electric cabinet in the magnetic levitation chiller adopts the control electric cabinet in the present utility model, which can classify and place the electrical components in the chiller, that is, the electrical components of the high-voltage system are placed in the high-voltage chamber, and the electrical components and the control system of the low-voltage system are placed in the low-voltage chamber, realizing the separation of high-voltage and low-voltage electricity from the placement of electrical components to wiring. At the same time, the first door can seal the high-voltage chamber, and the second door can seal the low-voltage chamber, avoiding electromagnetic interference caused by mixed placement during the operation of the control electric cabinet, reducing the mutual influence between the high-voltage circuit and the low-voltage circuit, and reducing the failure rate of electrical components.

[0022] At the same time, after the high-voltage electrical components and the low-voltage electrical components are placed separately, it can avoid interfering with the low-voltage signals, improve the accuracy of signal transmission and processing of the control system, and thus ensure the stable operation of the control system.

[0023] In addition, after the separation of high-voltage and low-voltage electricity, it can also avoid the occurrence probability of installation risks such as electric shock and fire caused by the mixing of high-voltage and low-voltage electrical appliances, and then reduce potential safety hazards.

[0024] Finally, after the separation of high-voltage and low-voltage electricity, it is convenient for maintenance personnel to distinguish high-voltage and low-voltage circuits when operating the control electric cabinet, reducing the difficulty and risk of maintenance work and improving the maintenance efficiency.

[0025] The present utility model will be further described below with reference to the drawings and embodiments. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the overall structure in the embodiment of the present utility model;

[0027] Figure 2 is a right view of the overall structure in the embodiment of the present utility model;

[0028] Figure 3 is a front view of the overall structure in the embodiment of the present utility model;

[0029] Figure 4 is a left view of the overall structure in the embodiment of the present utility model.

[0030] In the figure: 1 - cabinet body; 11 - bottom plate; 12 - first side plate; 120 - wire inlet hole; 121 - first fan hole; 13 - second side plate; 130 - second fan hole; 14 - strong - electricity chamber; 15 - weak - electricity chamber; 16 - top plate; 2 - middle partition; 21 - wire - passing hole; 22 - rubber ring; 3 - strong - electricity back plate; 4 - weak - electricity back plate; 5 - door assembly; 51 - first door; 52 - second door; 520 - display - screen hole; 521 - button hole; 53 - door lock assembly. Detailed implementation manners

[0031] As Figures 1-4 shown: A structure of a strong - and - weak - electricity separated control electric cabinet for a magnetic - levitation chiller, including a cabinet body 1. A middle partition 2 is vertically arranged along the height direction of the cabinet body 1 at the middle position inside the cabinet body 1. The middle partition 2 divides the internal space of the cabinet body 1 into two spaces: a strong - electricity chamber 14 and a weak - electricity chamber 15. A strong - electricity back plate 3 is hermetically installed at a position on one side of the cabinet body 1 close to the strong - electricity chamber 14, and a weak - electricity back plate 4 is hermetically installed at a position on one side of the cabinet body 1 close to the weak - electricity chamber 15. The strong - electricity back plate 3 and the weak - electricity back plate 4 are fixedly connected. The middle partition 2 is vertically arranged with the strong - electricity back plate 3 and the weak - electricity back plate 4. A door assembly 5 is hinged to the other side of the cabinet body 1.

[0032] As Figure 1 shown, the cabinet body 1 includes a bottom plate 11 placed on the ground.

[0033] On both sides of the bottom plate 11 in the length direction, a first side plate 12 and a second side plate 13 are respectively vertically arranged.

[0034] The first side plate 12 and the second side plate 13 are arranged in parallel with the middle partition 2 at the same time.

[0035] And the first side plate 12 is close to the strong - electricity chamber 14, and the second side plate 13 is close to the weak - electricity chamber 15.

[0036] At the ends of the first side plate 12 and the second side plate 13 far from the bottom plate 11, the same top plate 16 is fixedly connected.

[0037] One end of the middle partition 2 is fixedly installed on the bottom plate 11, and the other end of the middle partition 2 is fixedly installed on the top plate 16.

[0038] As Figure 4 shown, a first fan hole 121 is opened at a position on the first side plate 12 close to the bottom plate 11.

[0039] A wire inlet hole 120 is opened at a position on the first side plate 12 close to the first fan hole 121.

[0040] As Figure 2 shown, at least two second fan holes 130 arranged at intervals are opened on the second side plate 13.

[0041] Fans are installed at both the positions of the first fan hole 121 and the second fan hole 130. The function of the fans is to increase the air flow in the strong electricity chamber 14 and the weak electricity chamber 15 for heat dissipation.

[0042] As Figure 1 shown, wire passing holes 21 are formed in the middle partition plate 2 near the positions of the strong electricity back plate 3 and the weak electricity back plate 4, and rubber rings 22 are movably placed at the edge positions of the wire passing holes 21.

[0043] The door assembly 5 includes a first door 51 hinged to one side of the end face of the cabinet body 1 away from the strong electricity back plate 3, and the first door 51 is also located near the strong electricity chamber 14.

[0044] A second door 52 is hinged to the other side of the end face of the cabinet body 1 away from the strong electricity back plate 3, and the second door 52 is also located near the weak electricity chamber 15.

[0045] The first door 51 and the second door 52 are symmetrically arranged with the plane where the middle partition plate 2 is located as the symmetry plane.

[0046] When the first door 51 is closed, the strong electricity chamber 14 is in a sealed state, and when the second door 52 is closed, the weak electricity chamber 15 is in a sealed state.

[0047] A display screen hole 520 is formed in the second door 52 near the position of the top plate 16, and a display screen is fixedly installed at the display screen hole 520.

[0048] A plurality of button holes 521 arranged at intervals are formed in the second door 52 near the position of the display screen hole 520, and a plurality of button holes 521 are used for fixedly installing operation buttons for controlling the operation of the electric cabinet.

[0049] Door lock assemblies 53 are fixedly installed on both sides of the first door 51 and the second door 52 close to each other. The function of the door lock assemblies 53 is to lock the first door 51 and the second door 52 when the first door 51 and the second door 52 are closed.

[0050] The door lock assemblies 53 are common locking assemblies in the electric cabinet and can be directly purchased on the market. The specific locking principle thereof will not be elaborated herein.

[0051] In this embodiment, the control electric cabinet of the magnetic levitation chiller internally includes a control system, a strong electricity system and a weak electricity system. The electrical components included in the control system, the strong electricity system and the weak electricity system and the functions of each electrical component are already well-known in the prior art and will not be elaborated herein.

[0052] In this embodiment, the dimensions of the high-voltage chamber 14 and the low-voltage chamber 15 are 650*480*1000 mm.

[0053] On one side of the high-voltage backplane 3 located in the high-voltage chamber 14, electrical components of the high-voltage system are fixedly installed. The electrical components of the high-voltage system include high-voltage electrical devices such as high-voltage circuit breakers, high-voltage terminal blocks, high-voltage relays, power distribution modules, and main circuit breakers.

[0054] The electrical components of the high-voltage system can convert high-voltage signals into low-voltage signals.

[0055] On one side of the low-voltage backplane 4 located in the low-voltage chamber 15, electrical components of the low-voltage system are fixedly installed. The electrical components of the low-voltage system include control circuits, protection devices, signal input / output modules, etc.

[0056] On one side of the intermediate partition 2 located in the low-voltage chamber 15, a control system is fixedly installed.

[0057] With such a design, the power cord of the magnetic levitation chiller enters the high-voltage chamber 14 from the inlet hole 120, is electrically connected to each electrical component of the high-voltage system, and then enters the low-voltage chamber 15 through the wire hole 21 and is electrically connected to the electrical components of the low-voltage system and the control system wires.

[0058] The rubber ring 22 at the edge of the wire hole 21 wraps and seals the line at the same time. When the control electric cabinet is started, the surges and electromagnetic interference generated in the high-voltage chamber 14 will not interfere with the low-voltage system and the control system in the low-voltage chamber 15, improving the operation stability of the control system.

[0059] For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions, and deformations made to the embodiments still fall within the protection scope of the present invention.

Claims

1. A strong and weak current separation control cabinet structure for a magnetic suspension chiller, comprising a cabinet body (1), characterized in that: A middle partition (2) is arranged vertically along the height direction of the cabinet (1) at the middle position inside the cabinet (1), and the middle partition (2) divides the internal space of the cabinet (1) into two spaces, namely, a strong current chamber (14) and a weak current chamber (15). A strong current back plate (3) is sealed and installed at a position close to the strong current chamber (14) on one side of the cabinet (1), and a weak current back plate (4) is sealed and installed at a position close to the weak current chamber (15) on one side of the cabinet (1). The strong current back plate (3) and the weak current back plate (4) are fixedly connected. The middle partition (2) is arranged vertically to the strong current back plate (3) and the weak current back plate (4), and a door assembly (5) is hingedly connected to the other side of the cabinet (1).

2. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 1 is characterized in that: The cabinet (1) comprises a bottom plate (11), and a first side plate (12) and a second side plate (13) are respectively arranged vertically on both sides of the bottom plate (11) in the length direction. The first side plate (12) and the second side plate (13) are arranged parallel to the middle partition plate (2) at the same time, and the first side plate (12) and the second side plate (13) are fixedly connected to the same top plate (16) at one end away from the bottom plate (11).

3. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 2 is characterized in that: One end of the middle partition (2) is fixedly mounted to the bottom plate (11), and the other end of the middle partition (2) is fixedly mounted to the top plate (16).

4. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 3 is characterized in that: A first fan hole (121) is provided on the first side plate (12) at a position close to the bottom plate (11), and a wire inlet hole (120) is provided on the first side plate (12) at a position close to the first fan hole (121).

5. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 4 is characterized in that: The second side plate (13) is provided with at least two second fan holes (130) arranged at intervals.

6. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 5 is characterized in that: A wire-passing hole (21) is provided on the middle partition plate (2) at a position close to the strong-current back plate (3) and the weak-current back plate (4), and a rubber ring (22) is movably placed at the edge of the wire-passing hole (21).

7. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 6 is characterized by: The door assembly (5) comprises a first door (51) hingedly connected to a side of the end surface of the cabinet (1) away from the high-voltage backplane (3), and the first door (51) is also located near the high-voltage chamber (14); A second door (52) is hingedly connected to the other side of the cabinet (1) away from the end surface of the strong current back panel (3), and the second door (52) is also located near the weak current chamber (15); The first door (51) and the second door (52) are symmetrically arranged with the plane where the middle partition (2) is located as a symmetry plane.

8. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 7 is characterized in that: A display screen hole (520) is provided on the second door (52) near the top plate (16), and a plurality of button holes (521) arranged at intervals are provided on the second door (52) near the display screen hole (520).

9. The strong and weak electricity separation control cabinet structure of a magnetic suspension chiller according to claim 8 is characterized in that: A door lock assembly (53) is fixedly mounted on the side of the first door (51) and the second door (52) that are close to each other.

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