CN114594346B

CN114594346B - Near-end measuring device and cubical switchboard of live line

Info

Publication number: CN114594346B
Application number: CN202210495953.4A
Authority: CN
Inventors: 蒋志龙; 欧阳道生; 胡昀实; 刘晓菊; 苏轶群; 耿文兵; 牛欣彤
Original assignee: Ningbo Tianan Smart Grid Technology Co ltd
Current assignee: Ningbo Tianan Smart Grid Technology Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-08-23
Anticipated expiration: 2042-05-09
Also published as: CN114594346A

Abstract

The application discloses live line's near-end measuring device includes: the measuring module is used for monitoring the working state of the live line; the display module is used for displaying the state information obtained by the measuring module; and the electricity taking module is suitable for being close to the electrified circuit, generating working electric energy in an electromagnetic induction mode and supplying power to the measuring module and the display module. The application also provides a switch cabinet with the measuring device. The power supply device has the advantages of being capable of automatically supplying power and directly displaying the working state of the live line.

Description

Near-end measuring device and cubical switchboard of live line

Technical Field

The application relates to the field of power equipment, in particular to switch equipment.

Background

The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system. Measuring elements such as a current transformer and a voltage transformer are generally arranged in the switch cabinet and used for monitoring the running state of the switch cabinet; the switch cabinet generally has an instrument room or an instrument panel for mounting display elements such as an ammeter and a voltmeter to display information such as current and voltage. The current transformer, the voltage transformer, the ammeter and the voltmeter are connected through secondary paying-off, the secondary paying-off not only occupies the space in the cabinet, but also costs a large amount of working time, and the technical requirements for workers are also high.

Disclosure of Invention

An object of the present application is to provide a near-end measuring device for a live line, which can be autonomously powered and can directly display the working state of the live line.

It is another object of the present application to provide a switchgear cabinet having a near end measuring device with live lines as described above.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a live line proximal end measurement device comprising:

the measuring module is used for monitoring the working state of the live line;

the display module is used for displaying the state information obtained by the measuring module;

and the electricity taking module is suitable for being close to the electrified line, generating working electric energy in an electromagnetic induction mode and supplying power to the measuring module and the display module.

The measuring device comprises a measuring module, a power taking module and a power supply module, wherein the measuring module comprises an annular power measuring winding and a processor, and the power taking module comprises an annular power generating winding and a converter; the display module is arranged on the front side of the upright column, the electricity measuring winding is arranged in the first ring seat, the electricity generating winding is arranged in the second ring seat, the electrified circuit is suitable for respectively penetrating through the electricity measuring winding and the electricity generating winding, the electricity measuring winding is suitable for monitoring the current state of the electrified circuit in an electromagnetic induction mode, the current state is processed into state information through the processor and displayed on the display module, the electricity generating winding is suitable for generating induced electromotive force in an electromagnetic induction mode, and the electricity generating winding is converted into working electric energy through the converter and supplies power to the processor and the display module.

Furthermore, the insulating housing seat is integrally molded by casting, the electricity measuring winding and the electricity generating winding are both fixedly sealed in the insulating housing seat, an installation cavity is formed in the front side of the upright post, a conductive contact is also fixedly sealed in the insulating housing seat, the conductive contact is respectively and electrically connected with the electricity measuring winding and the electricity generating winding and extends into the installation cavity, and the display module, the processor and the converter are all arranged in the installation cavity and are electrically connected with the conductive contact.

Furthermore, the installation cavity is a step cavity, a circuit board is further arranged in the installation cavity, the processor and the converter are both arranged on the circuit board, the circuit board is fixedly arranged at the bottom of the installation cavity, the display module is fixedly arranged above the circuit board, and a transparent cover plate is further fixedly arranged above the display module;

the circuit board is also provided with a storage battery, the converter is suitable for temporarily storing working electric energy in the storage battery, and the storage battery directly supplies power to the processor and the display module;

the periphery of the installation cavity is further provided with a shielding cover, and the shielding cover faces away from the live line.

Furthermore, bent arms are arranged between the upright post and the first ring seat and between the upright post and the second ring seat, the bent arm positioned above is bent upwards and backwards, and the bent arm positioned below is bent downwards and backwards;

umbrella skirts are further arranged at the two ends of the upright post.

Further, the display module is a luminous source, and the luminous source is suitable for changing color or brightness or flashing frequency according to the obtained state information;

or the display module is a display screen, and the display screen is suitable for displaying the obtained state information.

Furthermore, the measuring device is suitable for being fixed in an external cooperation mode, the live line penetrates through the measuring device in a suspended mode, and the insulating shell seat is provided with a mounting pin for fixing.

Furthermore, the measuring device is suitable for being fixed on the electrified line, and the insulating shell seat is provided with a fixing component which is suitable for being clamped and fixed on the electrified line.

Further, the live line is arranged vertically, the fixing assembly is arranged on at least one of the first ring seat and the second ring seat and comprises a pair of installation seats, a pair of clamping blocks and a pair of resetting pieces, the installation seats are symmetrically arranged along the live line, guide grooves are formed in the installation seats, the guide grooves gradually approach the live line from bottom to top, the clamping blocks can slide along the guide grooves, and the resetting pieces are arranged between the installation seats and the clamping blocks and are suitable for driving the clamping blocks on two sides to approach; live-line passes both sides during the grip block, it is suitable for the drive to reset the piece the grip block is contradicted live-line, and under the action of gravity, the grip block has upward movement and the trend that is close to each other, and then relies on the grip block with frictional force between the live-line limits measuring device is relative live-line is along vertical displacement.

Furthermore, the clamping block is provided with limiting convex edges on two sides, the limiting convex edges are suitable for abutting against two sides of the live line, and therefore the measuring device is limited to move along the transverse direction relative to the live line.

Furthermore, be provided with locating component on at least one in first ring seat with the second ring seat, locating component encircles the setting, locating component has defined or deformation is formed with the mouth of passing through, electrified circuit is suitable for following the mouth of passing through passes through, just locating component is suitable for to contradict electrified circuit, and then the restriction measuring device is relative electrified circuit is along horizontal displacement.

Further, the first ring seat and the electricity detection winding are of a closable opening structure, and the live line is suitable for entering and exiting the first ring seat along the transverse direction; the second ring seat and the power generation winding are of a closable opening structure, and the live line is suitable for transversely entering and exiting the second ring seat.

Furthermore, the measuring module further comprises a voltage transformer which is arranged in a split manner, the voltage transformer is electrically connected with the live line and the processor, and the voltage transformer is suitable for monitoring the voltage state of the live line in an electromagnetic induction manner, processing the voltage state into state information through the processor and displaying the state information on the display module;

the measurement module further comprises an integrally arranged temperature sensor, the temperature sensor is arranged on the stand column and extends backwards to be close to the electrified line, the electricity taking module is suitable for supplying electricity to the temperature sensor, the temperature sensor is suitable for monitoring the temperature state of the electrified line, and the temperature sensor is processed into state information through the processor and displayed on the display module;

the measuring device also comprises a remote communication module which is suitable for transmitting the state information obtained by the measuring module to a remote end in a wireless signal mode.

The utility model provides a switch cabinet, includes the cabinet body, the internal electrified circuit that is provided with of cabinet, be provided with on the electrified circuit measuring device, still be provided with transparent window on the cabinet body, and be suitable for and see through transparent window observes display module.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the arrangement of the power acquisition module in the scheme ensures that the measuring device can automatically supply power, saves the trouble of wiring and is beneficial to improving the use convenience;

(2) in the scheme, the measurement module, the display module and the power taking module are integrally arranged, so that the device has the functions of measurement, display and power supply at the same time, directly displays the measurement result at the near end of the live line, can be used as an independent measurement tool of the live line and can be assembled at any time; of course, the device can be installed for a long time and used for monitoring;

(3) the measuring device does not directly invade a live line, the rated voltage and the rated current in the device are set at lower values, and the device has use reliability and safety;

(4) in the scheme, the measuring module, the display module and the power taking module are arranged in a highly integrated manner, so that the device has a more compact and small structure, occupies less space and has higher applicability;

(5) the measuring device can be used as a part of a switch cabinet to be installed, is used for replacing the original measuring element and display element, can save the process of secondary paying-off, and has the advantages of simple structure, simple and convenient assembly, small occupied space and low cost; moreover, the measuring device can be directly installed on a live line (a copper bar or a cable) in the bus chamber, and a transparent window for observing the display module is arranged on the bus chamber, so that the bus chamber has the function of an instrument chamber, the independent instrument chamber is not required to be arranged, the size of the switch cabinet is further reduced, and the manufacturing cost is reduced.

Drawings

Fig. 1 is a diagram of a measurement circuit according to a preferred embodiment of the present application.

Fig. 2 is a perspective view of a preferred embodiment according to the present application.

Fig. 3 is a top view of a preferred embodiment according to the present application.

Fig. 4 is a cross-sectional view taken along a-a in fig. 3, according to a preferred embodiment of the present application.

Fig. 5 is a schematic structural diagram of a fixing assembly according to a preferred embodiment of the present application, and a force analysis diagram of a live line.

Figure 6 is a schematic view of a live line passing through a stationary assembly according to a preferred embodiment of the present application.

Fig. 7 is an exploded view of a preferred embodiment according to the present application.

FIG. 8 is a partial view of the location of the mounting cavity in accordance with a preferred embodiment of the present application.

Fig. 9 is a perspective view of a fixation assembly according to a preferred embodiment of the present application.

Fig. 10 is a perspective view of a mounting foot according to a preferred embodiment of the present application.

Fig. 11 is a perspective view of a cable mounted according to a preferred embodiment of the present application.

Fig. 12 is a top view of a cable mounted according to a preferred embodiment of the present application.

Fig. 13 and 14 are schematic views of an open structure according to a preferred embodiment of the present application.

Fig. 15 is a schematic diagram of an expanded structure according to a preferred embodiment of the present application.

Fig. 16 is a work flow diagram in accordance with a preferred embodiment of the present application.

Fig. 17 is a schematic view of the structure when mounted in a switchgear cabinet according to a preferred embodiment of the present application.

In the figure: 10. a live line; 1. an insulating housing base; 11. a column; 111. a mounting cavity; 112. a conductive contact; 113. a circuit board; 114. a transparent cover plate; 115. a shield case; 116. an umbrella skirt; 12. a first ring seat; 13. a second ring seat; 14. bending the arm; 15. mounting a foot; 2. a measurement module; 21. testing the electricity winding; 22. a processor; 23. a voltage transformer; 24. a temperature sensor; 3. a display module; 4. a power taking module; 41. a power generation winding; 42. a converter; 43. a storage battery; 5. a fixing component; 51. a mounting seat; 511. a guide groove; 52. a clamping block; 521. a limiting convex edge; 53. a reset member; 6. a positioning assembly; 7. a remote communication module; 8. a cabinet body; 81. and a transparent window.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations and positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Patent publication No. CN105074480A discloses a self-powered current transformation system, namely, a current transformation system in which a current transformer for detection and a current transformer for power generation are separately provided in parallel on a line, and an integrated system for managing the current transformation system through a wireless communication network, and also discloses a self-powered measuring device, namely, an intelligent measurement device for distribution lines, patent publication No. CN 110703023A. The power-taking principle is not specifically described, but the technical characteristics of the power-taking principle are not prevented.

In addition, as shown in fig. 1, a commonly used measurement wiring diagram for a three-phase live line is shown, in which the current of each phase is measured by a current transformer and displayed on an ammeter, and the voltage between any two phases is measured by a voltage transformer and displayed on a voltmeter. This application is realized based on above-mentioned measurement principle, but not being in above-mentioned mode of connection, all can realize that the mode of connection of measurement function all should fall into the scope of protection of this application.

As shown in fig. 2 to 16, a preferred embodiment of the present application includes:

an insulating housing base 1 as a mounting carrier;

the measuring module 2 is used for monitoring the working state of the live line 10;

the display module 3, the display module 3 is used for displaying the status information obtained by the measuring module 2;

and the power taking module 4 is suitable for being close to the live line 10, generating working electric energy in an electromagnetic induction mode and supplying power to the measuring module 2 and the display module 3.

Through the structure, the measuring device of the embodiment can be supplied with power autonomously, can directly display the measuring result, can be used as a measuring tool independently for measuring the working state of the live line 10, and has convenience in use; the device can be installed in the power equipment as a component for monitoring the working state of the live line 10, and has the function of simplifying the power equipment. Based on the application scenario, the specific structure of this embodiment is as follows:

as shown in fig. 2 to 4, the insulating housing base 1 includes an upright post 11, and a first ring base 12 and a second ring base 13 respectively disposed at two ends of the upright post 11, the measuring module 2 includes an annular electricity measuring winding 21 and a processor 22, and the electricity getting module 4 includes an annular electricity generating winding 41 and a converter 42; the display module 3 is arranged on the front side of the upright post 11, information is convenient to observe, the electricity measuring winding 21 is arranged in the first ring seat 12, the electricity generating winding 41 is arranged in the second ring seat 13, the electrified line 10 is suitable for respectively penetrating through the electricity measuring winding 21 and the electricity generating winding 41, the electricity measuring winding 21 is suitable for monitoring the current state of the electrified line 10 in an electromagnetic induction mode, the current state is processed into state information through the processor 22 and displayed on the display module 3, the electricity generating winding 41 is suitable for generating induced electromotive force in an electromagnetic induction mode, and the induced electromotive force is converted into working electric energy through the converter 42 and supplies power to the processor 22 and the display module 3.

By taking the application scene of the switch cabinet as an analogy, the first ring seat 12 and the electricity measuring winding 21 in the structure are equivalent to current transformers for measurement, the second ring base 13 and the generating winding 41 in the above structure are equivalent to a current transformer for generating electricity, the display module 3 has the display function of a current meter and a voltmeter, the processor 22 is a general functional block, in practical application, the device is usually in a chip form, and may be disposed in an ammeter or a voltmeter, or may be disposed on a multifunctional microcomputer, the converter 42 mainly converts an unstable induced electromotive force obtained by electromagnetic induction into a stable working power, the converter 42 may also be in a chip form, and has one or more of a voltage transformation function, an inverter function, a voltage stabilization function, and the like, and the processor 22 and the converter 42 may be implemented by existing modules, and therefore are not specifically described in this embodiment.

The insulating housing base 1 in this embodiment is a key of the integrated design of the measuring device, and has two functions of insulation and support. The design of the upright post 11 is particularly important, and specifically: on one hand, the upright post 11 is used as a support to separate the electricity measuring winding 21 and the electricity generating winding 41, so that excessive interference of induction magnetic fields of the two is avoided; on the other hand, the column 11 serves as a support for mounting electrical components such as the display module 3, the processor 22, and the converter 42, and also serves as an insulator for protecting the electrical components and reducing the influence of the electric field generated by the live line 10 on the electrical components.

Based on the above functional requirements, as shown in fig. 4, the insulating housing base 1 is preferably molded by casting epoxy resin, the electricity measuring winding 21 and the electricity generating winding 41 are both fixedly sealed in the insulating housing base 1, the front side of the upright post 11 is provided with an installation cavity 111, the insulating housing base 1 is further fixedly sealed with an electrically conductive contact 112, the electrically conductive contact 112 is respectively electrically connected with the electricity measuring winding 21 and the electricity generating winding 41 and extends into the installation cavity 111, and the display module 3, the processor 22 and the converter 42 are all arranged in the installation cavity 111 and are electrically connected with the electrically conductive contact 112.

As shown in fig. 8, more specifically, the mounting cavity 111 is a step cavity, a circuit board 113 is further disposed in the mounting cavity 111, the processor 22 and the converter 42 are both disposed on the circuit board 113, the circuit board 113 is fixedly disposed at the bottom of the mounting cavity 111, the display module 3 is fixedly disposed above the circuit board 113, and a transparent cover plate 114 is further fixedly disposed above the display module 3. The arrangement of the step cavity enables the circuit board 113, the display module 3 and the transparent cover plate 114 to be sequentially stacked and mounted, so that the internal structure of the measuring device is more compact and ordered, and the assembly is convenient. The circuit board 113 is generally a PCB for improving the integration level of the measuring device and simplifying the internal structure. The transparent cover plate 114 mainly protects the display module 3 and the circuit board 113 in the mounting cavity 111 by incoming lines, and has the functions of dust prevention, water prevention and insulation.

As shown in fig. 8, the circuit board 113 is further provided with a storage battery 43, the converter 42 is adapted to temporarily store the operating power in the storage battery 43, and the storage battery 43 directly supplies power to the processor 22 and the display module 3. The storage battery 43 is used as an intermediate module, and can supply more stable working current to the output processor 22 and the display module 3; in addition, the electric energy stored in the storage battery 43 can supply power to the processor 22 and the display module 3 when the power generation winding 41 does not generate induced electromotive force, so as to ensure the timeliness of measurement. It is contemplated that the battery 43 may be further provided with a charge-discharge module for more stable and reliable charging and discharging. Of course, other electrical components, such as capacitors, control chips, management chips, etc., may also be disposed on the circuit board 113, and the electrical components may be disposed as needed, and the electrical part is not the focus of the discussion of this embodiment.

As can be seen from fig. 4 and 7, a shield case 115 is further disposed on the circumferential side of the mounting cavity 111, and the shield case 115 is disposed away from the live line 10. The shield 115 is used to further reduce the influence of the electric field generated by the live line 10 on the electrical components in the installation cavity 111.

As shown in fig. 4, 7 and 8, the bent arms 14 are disposed between the upright post 11 and the first ring seat 12, and between the upright post 11 and the second ring seat 13, the upper bent arm 14 is bent upward and rearward, and the lower bent arm 14 is bent downward and rearward. In this embodiment, the bent arm 14 is a quarter-ring structure, and the bent arm 14 can lead the upright post 11 to increase the distance between the upright post 11 and the live line 10, so as to influence the electric field generated by the live line 10 on the electric element in the installation cavity 111, and increase the distance between the first ring seat 12 and the second ring seat 13, so as to further reduce the influence of the induced magnetic field between the electricity measuring winding 21 and the electricity generating winding 41. In order to increase the insulating property of the upright post 11, umbrella skirts 116 are further arranged at the two ends of the upright post 11.

According to the configuration level and the use requirement, the display module 3 can be configured as a light emitting source, and the light emitting source can change the color or change the brightness or change the flash frequency according to the obtained state information, for example, green indicates that the current is normal, yellow indicates that the current is abnormal, and red indicates that no current exists (the function can be realized based on the storage battery 43). And can regard emitting diode or LED lamp as the light source, transparent ya keli board is as the light guide plate to increase the display area of light emitting source, be convenient for observe.

Of course, the display module 3 may also be configured as a display screen, which is adapted to resemble the obtained status information. Wherein the display screen is preferred from the self-luminous display screen to satisfy the user demand in the cabinet.

The above structure mainly describes the functionality and the integrated structure of the measuring device, and the following describes the installation mode and the personalized configuration of the measuring device:

the fixing mode of the measuring device is two types: one is an external fixation (taking a switch cabinet as an example, namely fixed on a cabinet body), and the live line 10 is suspended to pass through the measuring device; the other is wire-holding fixation, i.e. fixation on the live line 10.

As shown in fig. 10, the insulating housing base 1 is provided with a mounting leg 15 for fixing, which is suitable for external cooperation fixing.

As shown in fig. 2 to 9, a fixing assembly 5 is disposed on the insulating housing base 1, and the fixing assembly 5 is suitable for being clamped and fixed on the live line 10 and is suitable for being fixed by a wire.

In the prior art, usually, the current transformer is fixed on the live line 10 by adopting a bolt clamping mode, but the fixing mode needs a screwdriver to screw, the installation is unchanged, and in long-term use, the bolt is easy to loosen, so that certain potential safety hazards exist, and based on the method, the line grabbing fixing mode of the measuring device is improved and specifically as follows:

in the power equipment, especially the switch cabinet, the live line 10 is generally arranged vertically, in this embodiment, a fixing assembly 5 is arranged on at least one of the first ring seat 12 and the second ring seat 13, the fixing assembly 5 includes a pair of mounting seats 51, a pair of clamping blocks 52 and a pair of resetting pieces 53, the mounting seats 51 are symmetrically arranged along the live line 10, a guide slot 511 is formed in each mounting seat 51, the guide slot 511 is gradually close to the live line 10 from bottom to top, the clamping blocks 52 can slide along the guide slots 511, and the resetting pieces 53 are arranged between the mounting seats 51 and the clamping blocks 52 and are suitable for driving the clamping blocks 52 on both sides to close; when the live line 10 passes through the clamping blocks 52 on the two sides, the resetting piece 53 is suitable for driving the clamping blocks 52 to abut against the live line 10, and under the action of gravity, the clamping blocks 52 have the tendency of moving upwards and approaching each other, so that the vertical displacement of the measuring device relative to the live line 10 is limited by means of the friction force between the clamping blocks 52 and the live line 10.

As shown in fig. 5, a simple acceptance analysis was performed: the measuring device has a vertically downward gravity G, the gravity G acts on the clamping block 52 through the mounting seat 51 and generates a component force N perpendicular to the guide slot 511, the component force N acts on the live line 10 through the clamping block 52 and generates a component force F perpendicular to the live line, the component force F is a vertical pressure of the clamping block 52 on the live line 10, as can be known from a friction force technical formula, a static friction force F = μ F between the clamping block 52 and the live line 10, and since an inclination angle α and a friction coefficient μ of the guide slot 511 are fixed values, the static friction force F and the gravity G are in a positive proportion relation, in other words, the heavier the measuring device is, the tighter the fixed component 5 is clamped, thereby ensuring that the measuring device can be stably and reliably fixed on the live line 10 through the fixed component 5.

The reset member 53 mainly ensures that the clamping block 52 can contact the live line 10 and provides an initial frictional force of the contact so that when the measuring device slides down, the clamping block 52 can move up and approach, and finally clamp the live line 10 by means of the gravity of the measuring device. After the measuring device is stabilized, the reset member 53 can provide a component of force to apply a pressure to the live line 10, but the pressure is negligible compared to the pressure provided by the weight of the measuring device.

The clamping blocks 52 are preferably made of rubber, which on the one hand has reliable insulating properties and on the other hand has a high coefficient of friction. In addition, the clamping block 52 may be in various shapes such as a cylinder, a square column, a tooth shape, etc., so as to ensure that the clamping block 52 and the live line 10 have sufficient contact area and sufficient friction strength.

In order to avoid the shaking of the measuring device in the horizontal direction, as shown in fig. 9, the two sides of the clamping block 52 are provided with limiting convex edges 521, and the limiting convex edges 521 are suitable for abutting against the two sides of the live line 10, so as to limit the displacement of the measuring device relative to the live line 10 along the transverse direction.

For the same purpose, as shown in fig. 2, 4 and 7, at least one of the first ring seat 12 and the second ring seat 13 is provided with a positioning component 6, the positioning component 6 is disposed around the positioning component 6, the positioning component 6 defines or deforms to form a through opening, the live line 10 is adapted to pass through the through opening, and the positioning component 6 is adapted to abut against the live line 10, so as to limit the displacement of the measuring device relative to the live line 10 along the transverse direction. The limiting convex edge 521 and the positioning assembly 6 further have a centering function, so that the hot-line 10 can be ensured to pass through the central positions of the first ring seat 12 and the second ring seat 13, and the stability during measurement and power taking is ensured.

In practical application, the electrical winding 21 is generally large in volume and weight, and the electrical winding 41 is relatively small in volume and weight, so that the first ring seat 12 has enough installation space, the fixing component 5 is suitable for being arranged on the first ring seat 12, the positioning component 6 is arranged on the second ring seat 13, and the fixing component 5 and the positioning component 6 are matched to stably and reliably fix the measuring device on the live line 10.

As shown in fig. 5 and 6, when the device is installed, the live line 10 can pass through the measuring device from top to bottom, or the measuring device is sleeved on the live line 10 from bottom to top, when the live line 10 slides relative to the measuring device, the clamping block 52 can be automatically pushed away and slides to an installation position, and when the device is released, the measuring device can be automatically clamped at the installation position under the action of gravity.

As shown in fig. 13 and 14, the first ring seat 12 and the electrical winding 21 are of a closable opening structure, and the live line 10 is adapted to enter and exit the first ring seat 12 in a transverse direction; the second ring base 13 and the power generation winding 41 are of a closable opening structure, and the live line 10 is adapted to enter and exit the second ring base 13 in a lateral direction. The open structure design can more conveniently install the measuring device without disassembling the live line 10 for installation, and is suitable for being used as a measuring tool.

The copper bars and the cables are common live lines 10, as shown in fig. 2 to 10 and 13, the live lines 10 are all copper bars, and at the moment, the first ring seat 12, the second ring seat 13, the electricity measuring winding 21 and the electricity generating winding 41 are suitable for being in a rectangular ring structure; as shown in fig. 11, 12 and 14, the live line 10 is a cable, and the first ring seat 12, the second ring seat 13, the electricity measuring winding 21 and the electricity generating winding 41 are suitably in a circular ring structure. It should be noted that the outer wall of the clamping block 52 is an arc concave surface attached to the outer wall of the cable to ensure the contact area therebetween.

As an expansion, as shown in fig. 15, the measurement module 2 further includes a voltage transformer 23 separately disposed, the voltage transformer 23 is electrically connected to the live line 10 and the processor 22, the voltage transformer 23 is adapted to monitor the voltage state of the live line 10 in an electromagnetic induction manner, and then the voltage state is processed into state information by the processor 22 and displayed on the display module 3; the measuring module 2 further comprises an integrally arranged temperature sensor 24, the temperature sensor 24 is arranged on the upright post 11 and extends backwards to be close to the live line 10, the electricity taking module 4 is suitable for supplying electricity to the temperature sensor 24, the temperature sensor 24 is suitable for monitoring the temperature state of the live line, and the state information is processed by the processor 22 and displayed on the display module 3; the measuring device further comprises a remote communication module 7, and the remote communication module 7 is suitable for transmitting the state information obtained by the measuring module 2 to a remote end in a wireless signal mode.

Fig. 16 is a schematic diagram of the work flow of each module, and the specific electrical working principle is the prior art, and therefore, it is not specifically described in this embodiment, but this does not prevent it from becoming the technical feature implied by this application.

As shown in fig. 17, the present application further provides a switch cabinet with the above-mentioned measuring device, including the cabinet body 8, the cabinet body 8 is provided with the live line 10, the measuring device provided on the live line 10, the cabinet body 8 is further provided with a transparent window 81, and is suitable for seeing through the transparent window 81 and observing the display module 3. It can be seen that the switch cabinet of the present embodiment eliminates the instrument room, and the measuring device of the present embodiment is directly disposed on the live line 10 of the bus bar room, so that the measuring device has the function of the instrument room.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A live line proximal end measurement device, comprising:

the measuring module is used for monitoring the working state of the live line;

the power taking module is suitable for being close to the live line, generating working electric energy in an electromagnetic induction mode and supplying power to the measuring module and the display module;

the measuring device comprises a measuring module and an electricity taking module, wherein the measuring module comprises an annular electricity measuring winding and a processor, and the electricity taking module comprises an annular electricity generating winding and a converter; the display module is arranged on the front side of the upright column, the electricity measuring winding is arranged in the first ring seat, the electricity generating winding is arranged in the second ring seat, the electrified circuit is suitable for respectively penetrating through the electricity measuring winding and the electricity generating winding, the electricity measuring winding is suitable for monitoring the current state of the electrified circuit in an electromagnetic induction mode, the current state is processed into state information through the processor and displayed on the display module, the electricity generating winding is suitable for generating induced electromotive force in an electromagnetic induction mode, and the induced electromotive force is converted into working electric energy through the converter and supplies power to the processor and the display module;

the insulating shell seat is integrally molded by casting, the electricity measuring winding and the electricity generating winding are both fixedly sealed in the insulating shell seat, an installation cavity is formed in the front side of the upright post, a conductive contact is also fixedly sealed in the insulating shell seat, the conductive contact is respectively and electrically connected with the electricity measuring winding and the electricity generating winding and extends into the installation cavity, and the display module, the processor and the converter are all arranged in the installation cavity and are electrically connected with the conductive contact;

bent arms are arranged between the upright post and the first ring seat and between the upright post and the second ring seat, the bent arm positioned above is bent upwards and backwards, and the bent arm positioned below is bent downwards and backwards;

umbrella skirts are further arranged at the two ends of the upright posts;

the measuring device is suitable for being fixed on the electrified line, the insulating shell seat is provided with a fixing component, and the fixing component is suitable for being clamped and fixed on the electrified line;

the electrified circuit is vertically arranged, at least one of the first ring seat and the second ring seat is provided with the fixing assembly, the fixing assembly comprises a pair of mounting seats, a pair of clamping blocks and a pair of resetting pieces, the mounting seats are symmetrically arranged along the electrified circuit, guide grooves are formed in the mounting seats, the guide grooves gradually approach the electrified circuit from bottom to top, the clamping blocks can slide along the guide grooves, and the resetting pieces are arranged between the mounting seats and the clamping blocks and are suitable for driving the clamping blocks on two sides to approach; when the live line passes through the clamping blocks on the two sides, the reset piece is suitable for driving the clamping blocks to abut against the live line, and under the action of gravity, the clamping blocks have the tendency of moving upwards and approaching each other, so that the friction force between the clamping blocks and the live line is relied on to limit the vertical displacement of the measuring device relative to the live line;

at least one of the first ring seat and the second ring seat is provided with a positioning assembly, the positioning assembly is arranged in a surrounding mode, the positioning assembly is defined with or deformed to form a through hole, the electrified line is suitable for passing through the through hole, the positioning assembly is suitable for abutting against the electrified line, and therefore the measuring device is limited to move transversely relative to the electrified line.

2. The live line proximal end measurement device of claim 1, wherein: the mounting cavity is a step cavity, a circuit board is further arranged in the mounting cavity, the processor and the converter are both arranged on the circuit board, the circuit board is fixedly arranged at the bottom of the mounting cavity, the display module is fixedly arranged above the circuit board, and a transparent cover plate is further fixedly arranged above the display module;

3. The live line proximal end measurement device of claim 1, wherein: the display module is a luminous source which is suitable for changing color or brightness or changing flash frequency according to the obtained state information;

4. The live line proximal end measurement device of claim 1, wherein: or the measuring device is suitable for being fixed in an external cooperation mode, the live line penetrates through the measuring device in a suspended mode, and the insulating shell seat is provided with a mounting pin for fixing.

5. The live line proximal end measurement device of claim 1, wherein: the utility model discloses a measuring device, including grip block, measuring device, electrified circuit, measuring device, grip block both sides are provided with spacing protruding edge, spacing protruding edge is suitable for conflicting electrified circuit both sides, and then the restriction measuring device is relative electrified circuit is along horizontal displacement.

6. The live line proximal end measurement device of claim 1, wherein: the first ring seat and the electricity testing winding are of closable opening structures, and the electrified circuit is suitable for transversely entering and exiting the first ring seat; the second ring seat and the power generation winding are of a closable opening structure, and the live line is suitable for transversely entering and exiting the second ring seat.

7. The live line proximal end measurement device of claim 1, wherein: the measurement module further comprises a voltage transformer which is arranged in a split mode, the voltage transformer is electrically connected with the live line and the processor, and the voltage transformer is suitable for monitoring the voltage state of the live line in an electromagnetic induction mode, processing the voltage state into state information through the processor and displaying the state information on the display module;

8. The utility model provides a switch cabinet, includes the cabinet body, the internal electrified circuit that is provided with of cabinet, its characterized in that: the live line is provided with a measuring device as claimed in any one of claims 1 to 7, and the cabinet body is further provided with a transparent window and is suitable for observing the display module through the transparent window.