CN115085156A - Intelligent electric power monitoring terminal - Google Patents

Abstract

The invention relates to an intelligent power monitoring terminal in the technical field of power monitoring. It moves away from the transition cable, the cable. The current change in the cable can be detected more accurately by the current sensor. When the current increases, the current signal in the current sensor will be fed back to the controller, and the controller will control the drive unit to start, so that the conductive block moves away from the transition. The direction of the cable and the cable moves, so that the transition cable and the cable are disconnected from the state of electrical connection, so that the entire circuit is in an open circuit state, so as to protect the electrical components in the cabinet from overcurrent. The cable is straightened, so that the part of the cable in the cable sensor is in a straight state, so as to avoid the looseness of the cable and the reduction of the detection accuracy of the current sensor.

Description

An intelligent power monitoring terminal

technical field

The invention relates to the technical field of power monitoring, in particular to an intelligent power monitoring terminal.

Background technique

In the power system, power distribution stations and power distribution cabinets are usually used to install electrical components. Power distribution cabinets (boxes) are divided into power distribution cabinets (boxes), lighting power distribution cabinets (boxes), and metering cabinets (boxes). The final equipment of the system, the power distribution cabinet is the general name of the motor control center. The power distribution cabinet is used in the occasions where the load is relatively scattered and the circuits are less, and the motor control center is used in the occasions where the load is concentrated and the circuits are many. The electrical energy of a certain circuit of the power distribution equipment is distributed to the nearest load, and this level of equipment should provide protection, monitoring and control of the load.

The electrical components in the power distribution cabinet are powered by wires. One end of the wire penetrates into the power distribution cabinet and is connected to the air circuit breaker in the power distribution cabinet. When the current in the power distribution cabinet is too large, the air circuit breaker will trip, making the The wire is in an open circuit state to protect the electrical components in the power distribution cabinet from overcurrent. The air circuit breaker is a switch that will automatically disconnect as long as the current in the circuit exceeds the rated current. The air switch is a very important electrical appliance in the low-voltage power distribution network and power drag system, which integrates control and various protection functions. In addition to contacting and breaking the circuit, it can also protect the short circuit, severe overload and undervoltage caused by the circuit or electrical equipment, and can also be used to start the motor infrequently. However, the current detection accuracy of the air circuit breaker in the prior art is low, that is, when the current in the circuit needs to exceed a certain range to trigger the function of circuit breaker protection, when used in a power distribution cabinet with precision electrical components installed inside, this The air circuit breaker in the prior art cannot guarantee overcurrent protection for precision electrical components.

Based on this, the present invention designs an intelligent power monitoring terminal to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an intelligent power monitoring terminal, including a cabinet body of a power distribution cabinet, cables are threaded through the cabinet body, and a partition plate is arranged in the cabinet body, and the partition plate is connected to the bottom wall of the cabinet body. An installation space is formed between them, a current sensor is arranged in the installation space, the cable is passed through the ring hole of the current sensor, and a cable passage slot for the cable to pass through is arranged on the partition. A mounting seat is provided on the partition, and one end of the cable passing through the partition is inserted into the mounting seat, and a transition cable is passed through the mounting seat, and the transition cable is connected to the end of the cable that penetrates into the mounting seat. Correspondingly, the transition cable is connected to the air circuit breaker in the cabinet, the interior of the mounting seat is hollow and a conductive block is engaged, the conductive block can slide freely horizontally in the mounting seat, and the conductive block is driven by the drive unit. Move away from transition cables, cables.

In the above-mentioned intelligent power monitoring terminal, the translation unit includes a sliding rod that is horizontally fixed on the conductive block and is made of insulating material, and the sliding rod slides out of the mounting seat and passes out of the mounting seat. One end of the seat is sleeved with a floating ring, the floating ring is made of magnetically conductive material, an electromagnet is arranged on the outer wall of the mounting seat, the electromagnet is used in cooperation with the floating ring and a first spring is arranged between the two The first spring is sleeved on the sliding rod, and the two ends of the first spring in the elastic force direction elastically push against the electromagnet and the floating ring respectively.

In the above-mentioned intelligent power monitoring terminal, a cable straightening unit is arranged in the installation space, and the cable straightening unit includes a bracket arranged in the installation space, and the bracket is horizontally slid through a bracket. A pull rod, one end of the pull rod is provided with a mounting frame, a rotating wheel is rotatably connected to the mounting frame, one end of the cable passing through the current sensor is wound on the rotating wheel, and the pull rod is driven by an elastic driving structure to move away from The direction of the current sensor moves, thereby stretching the cable.

In the above-mentioned intelligent power monitoring terminal, the outer wall of the cabinet is provided with a cable end clamping structure, and the cable end clamping structure includes a clamping portion fixed on the outer wall of the cabinet, The clamping part includes a cylindrical section and a circular table section, the cylindrical section is fixed on the cabinet body, the circular table section is coaxial with the cylindrical section, and the outer diameter of the circular table section increases in turn toward the direction away from the cabinet body, so the A cable clamping hole in the form of a through hole is coaxially opened on the circular truncated segment, and a plurality of strip-shaped gaps passing through the cable clamping holes are arranged on the outer wall of the circular truncated segment along its axial direction. Extending to the cylindrical section, the cylindrical section is threadedly sleeved with a threaded sleeve, the threaded sleeve is provided with a tapered groove matched with the circular truncated section, and the circular truncated section is engaged in the tapered groove.

In the above-mentioned intelligent power monitoring terminal, the elastic driving structure includes a limit nut sleeved on the end of the pull rod away from the rotating wheel, the pull rod is sleeved with a second spring, and the second spring elastically pushes against the top of the pull rod. Limit nut.

In the above-mentioned intelligent power monitoring terminal, the support is provided with a sliding sleeve, and the pull rod is slidably penetrated on the sliding sleeve.

Compared with the prior art, the beneficial effect of the present invention is that the current change in the cable can be detected more accurately by the current sensor, and when the current increases, the current signal in the current sensor will be fed back to the controller to control the current change in the cable. The controller will control the drive unit to start, so that the conductive block moves in the direction away from the transition cable and cable, so that the transition cable and the cable are disconnected from the electrical connection state, so that the entire circuit is in an open state, so that the electrical appliances in the cabinet are in an open state. The element is protected against overcurrent, and the cable is straightened by setting the cable straightening unit, so that the part of the cable in the cable sensor is in a straight state, so as to avoid the looseness of the cable and the reduction of the detection accuracy of the current sensor.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the assembly structure schematic diagram of the present invention;

Fig. 2 is the enlarged schematic diagram of the partial structure at A place in Fig. 1;

Fig. 3 is the enlarged schematic diagram of the local structure at B in Fig. 1;

Fig. 4 is the enlarged schematic diagram of the partial structure at C in Fig. 1;

FIG. 5 is a schematic view of the structure of the clamping portion in the present invention.

In the accompanying drawings, the list of components represented by each number is as follows:

1-cabinet, 2-installation base, 3-partition, 4-cable, 5-installation space, 6-current sensor, 7-rotating wheel, 8-support, 9-transition cable, 10-first spring, 11-floating ring, 12-electromagnet, 13-slide rod, 14-conductive block, 15-tie rod, 16-installation frame, 17-slide sleeve, 18-second spring, 19-limit nut, 20-cone groove , 21-threaded sleeve, 22-cylindrical section, 23-circular truncated section, 24-bar notch, 25-cable clamping hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The embodiments of the present invention, and all other embodiments obtained by those of ordinary skill in the art without creative efforts, fall within the protection scope of the present invention.

1-5, the present invention provides a technical solution: an intelligent power monitoring terminal, including a cabinet 1 of a power distribution cabinet, the cabinet 1 is provided with cables 4, and inside the cabinet 1 A partition 3 is provided, and an installation space 5 is enclosed between the partition 3 and the inner bottom wall of the cabinet 1. A current sensor 6 is arranged in the installation space 5, and the cable 4 is formed by the loop of the current sensor 6. The separator 3 is provided with a cable passage slot for the cable 4 to pass through, the separator 3 is provided with a mounting seat 2, and the end of the cable 4 passing through the separator 3 is inserted into the installation In the seat 2, a transition cable 9 is threaded on the mounting seat 2, the transition cable 9 corresponds to the end of the cable 4 that penetrates into the mounting seat 2, and the transition cable 9 is disconnected from the air in the cabinet 1. The mounting seat 2 is hollow inside and is engaged with a conductive block 14, and the upper and lower surfaces of the conductive block are respectively against the transition cable 9 and the cable 4, so that the transition cable 9 and the cable 4 are in a state of passage in a natural state, so that the So that the electrical components in the cabinet can be energized normally, the conductive block 14 can slide freely horizontally in the mounting seat 2, and the conductive block 14 is driven by the drive unit to move in the direction away from the transition cable 9 and the cable 4. The cable When the internal current increases, the current sensor will detect the current change in the cable and feed it back to the external controller (which can be a single-chip computer or a computer device). The transition cable and the cable are disconnected from the electrical connection state.

The translation unit in this embodiment includes a sliding rod 13 that is horizontally fixed on the conductive block 14 and is made of insulating material. The sliding rod 13 slides out of the mounting seat 2 and passes through the One end is sleeved with a floating ring 11, the floating ring 11 is made of a magnetically conductive material, an electromagnet 12 is provided on the outer wall of the mounting seat 2, the electromagnet 12 is used in cooperation with the floating ring 11, and a space between the two is provided. There is a first spring 10, the first spring 10 is wrapped around the sliding rod 13, and the two ends of the spring force direction elastically push against the electromagnet 12 and the floating ring 11 respectively. When the signal generated by the current sensor is fed back to the external controller , the external controller controls the electromagnet to energize and generate magnetism, so that the electromagnet can generate magnetic attraction to the floating ring, thereby making the floating ring move in the direction of the electromagnet, so that the conductive block can be kept away from the transition cable and the cable.

In this embodiment, the installation space 5 is provided with a cable straightening unit, and the cable straightening unit includes a bracket 8 arranged in the installation space 5, and a pull rod 15 is slid horizontally through the bracket 8. One end of the pull rod 15 is provided with a mounting frame 16, a rotating wheel 7 is rotatably connected to the mounting frame 16, and the end of the cable 4 passing through the current sensor 6 is wound on the rotating wheel 7, the pull rod 15 is elastic The driving structure drives it to move in a direction away from the current sensor 6, thereby stretching the cable 4, so that the cable is in a straight state, so that the part of the cable in the current sensor is in a straight state, thereby making the detection of the current sensor possible. The accuracy will not be affected by the cable. In addition, when the rotating wheel stretches the cable, the cable can be stretched through the rotation of the rotating wheel, and the cable sheath will not be worn.

In this embodiment, the outer wall of the cabinet body 1 is provided with a cable end clamping structure, and the cable end clamping structure includes a clamping part fixed on the outer wall of the cabinet body 1. The clamping part It includes a cylindrical section 22 and a round table section 23. The cylindrical section 22 is fixed on the cabinet body 1, the round table section 23 is coaxial with the cylindrical section 22, and the outer diameter of the round table section 23 is in turn away from the cabinet body 1. Incrementally, a cable clamping hole 25 in the form of a through hole is coaxially opened on the circular truncated section 23 , and a plurality of strips passing through the cable clamping hole 25 are arranged on the outer wall of the circular truncated section 23 in an array along its axial direction. Notch 24, the strip-shaped notch 24 extends to the cylindrical section 22, the cylindrical section 22 is threadedly sleeved with a threaded sleeve 21, and the threaded sleeve 21 is provided with a tapered groove 20 that cooperates with the circular truncated section 23. The circular truncated section 23 is snapped into the tapered groove 20, the end of the cable is inserted into the cabinet through the cable clamping hole, and then the threaded sleeve is rotated, and the threaded sleeve is screwed on the cylindrical segment until the circular truncated segment can be snapped into the tapered groove, and then The threaded sleeve continues to rotate, and as the rotation progresses, the inner wall of the tapered groove squeezes the truncated truncated segment radially on the inner side, so that the truncated truncated segment elastically shrinks on the radial inner side, so that the cable clamping hole can clamp the cable, so When the cable is straightened again, the cable will not be pulled, and the cable has better anti-pull effect.

The elastic driving structure in this embodiment includes a limit nut 19 sleeved on the end of the pull rod 15 away from the rotating wheel 7 , the pull rod 15 is sleeved with a second spring 18 , and the second spring 18 elastically touches the top limit The stop nut 19 is elastically pushed against the stop nut by the second spring, so that the rotating wheel can straighten the cable. It is arranged on the sliding sleeve 17, so that the pull rod will suffer less wear when sliding on the bracket.

In the description of this specification, description with reference to the terms "one embodiment", "example", "specific example", etc. means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one of the present invention In an embodiment or example, in this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example, and the specific features, structures, materials or characteristics described may be in any one or more of the The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the described specific implementations. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can The present invention is well understood and utilized, and the present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. An intelligent power monitoring terminal comprises a cabinet body (1) of a power distribution cabinet, wherein a cable (4) penetrates through the cabinet body (1), and is characterized in that a partition plate (3) is arranged in the cabinet body (1), an installation space (5) is enclosed between the partition plate (3) and the inner bottom wall of the cabinet body (1), a current sensor (6) is arranged in the installation space (5), the cable (4) penetrates through a ring hole of the current sensor (6), a cable penetrating groove for the cable (4) to penetrate through is arranged on the partition plate (3), an installation seat (2) is arranged on the partition plate (3), one end of the cable (4) penetrating through the partition plate (3) penetrates into the installation seat (2), a transition cable (9) penetrates through the installation seat (2), and the transition cable (9) corresponds to one end of the cable (4) penetrating into the installation seat (2), transition cable (9) are connected with the air circuit breaker in the cabinet body (1), the inside hollow and block of mount pad (2) has conducting block (14), conducting block (14) can the level freely slide in mount pad (2), conducting block (14) are driven its orientation of keeping away from transition cable (9), cable (4) by drive unit and are removed.

2. The intelligent power monitoring terminal according to claim 1, wherein the translation unit comprises a sliding rod (13) horizontally and fixedly connected to a conductive block (14) and made of an insulating material, the sliding rod (13) slides out of the mounting seat (2) and one end of the sliding rod, which penetrates out of the mounting seat (2), is sleeved with a floating ring (11), the floating ring (11) is made of a magnetic conductive material, an electromagnet (12) is arranged on the outer wall of the mounting seat (2), the electromagnet (12) is matched with the floating ring (11) in use and a first spring (10) is arranged between the electromagnet (12) and the floating ring (11), the first spring (10) is sleeved on the sliding rod (13) and two ends of the sliding rod in the elastic direction elastically abut against the electromagnet (12) and the floating ring (11) respectively.

3. The intelligent power monitoring terminal according to claim 1, wherein a cable straightening unit is arranged in the installation space (5), the cable straightening unit comprises a support (8) arranged in the installation space (5), a pull rod (15) is arranged on the support (8) in a penetrating mode in a horizontal sliding mode, a mounting frame (16) is arranged at one end of the pull rod (15), a rotating wheel (7) is connected to the mounting frame (16) in a rotating mode, one end, penetrating out of the current sensor (6), of the cable (4) is wound on the rotating wheel (7), the pull rod (15) is driven by an elastic driving structure to move towards a direction far away from the current sensor (6), and the cable (4) is stretched.

4. The intelligent power monitoring terminal according to claim 3, wherein a cable end clamping structure is arranged on the outer wall of the cabinet body (1), the cable end clamping structure comprises a clamping portion fixedly connected to the outer wall of the cabinet body (1), the clamping portion comprises a cylindrical section (22) and a circular truncated cone section (23), the cylindrical section (22) is fixedly connected to the cabinet body (1), the circular truncated cone section (23) is coaxial with the cylindrical section (22), the outer diameters of the circular truncated cone section (23) are sequentially increased in a direction away from the cabinet body (1), a cable clamping hole (25) in a through hole form is coaxially formed in the circular truncated cone section (23), a plurality of strip-shaped notches (24) communicated with the cable clamping holes (25) are formed in the outer wall of the circular truncated cone section (23) along the axial direction of the outer wall, the strip-shaped notches (24) extend to the cylindrical section (22), a threaded sleeve (21) is sleeved on the cylindrical section (22), the thread bush (21) is provided with a conical groove (20) matched with the circular truncated cone section (23), and the circular truncated cone section (23) is clamped in the conical groove (20).

5. The intelligent power monitoring terminal according to claim 3, wherein the elastic driving structure comprises a limit nut (19) sleeved at one end of the pull rod (15) far away from the rotating wheel (7), a second spring (18) is sleeved on the pull rod (15), and the second spring (18) elastically abuts against the limit nut (19).

6. The intelligent power monitoring terminal according to claim 5, wherein a sliding sleeve (17) is arranged on the support (8) in a penetrating manner, and the pull rod (15) is arranged on the sliding sleeve (17) in a sliding manner.

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