CN219574340U

CN219574340U - Monitoring sensor and monitoring equipment

Info

Publication number: CN219574340U
Application number: CN202222732108.2U
Authority: CN
Inventors: 王建忠
Original assignee: Shenzhen Wan District Communication Technology Co ltd
Current assignee: Shenzhen Wan District Communication Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-08-22
Anticipated expiration: 2032-10-17

Abstract

The utility model discloses a monitoring sensor and monitoring equipment, which comprises a shell, a coupling component, a vibration conversion component and a circuit board component, wherein the shell is provided with a mounting cavity, the coupling component is at least partially arranged in the mounting cavity, the vibration conversion component is connected with the coupling component and is used for converting a feedback signal generated by the coupling component into an electric signal, and the circuit board component is arranged in the mounting cavity and is electrically connected with the vibration conversion component. According to the technical scheme, the load of the transformer is different, the vibration is different, the open-circuit state of the transformer is changed, and the vibration condition is also changed.

Description

Monitoring sensor and monitoring equipment

Technical Field

The utility model relates to the technical field of monitoring, in particular to a monitoring sensor and monitoring equipment.

Background

The power transformer is an important device in the operation of the power system, once faults occur to cause great influence on the production operation of a factory and the daily life of residents, a large amount of maintenance time and materials are required for equipment maintenance personnel, so that the real-time monitoring of the working state of the transformer is of great significance to the operation of the power system, however, the conventional power monitoring device of the transformer is complex in structure, high in manufacturing cost and high in later maintenance cost.

Disclosure of Invention

The utility model mainly aims to provide a monitoring sensor, and aims to provide a monitoring sensor with low manufacturing cost offset and low post maintenance cost.

To achieve the above object, the present utility model provides a monitoring sensor, comprising:

the shell is provided with a mounting cavity and is used for being arranged on the transformer;

the coupling component is at least partially arranged in the mounting cavity;

the vibration conversion component is connected with the coupling component and used for converting a feedback signal generated by the coupling component into an electric signal; the method comprises the steps of,

and the circuit board assembly is arranged in the mounting cavity and is electrically connected with the vibration conversion assembly.

Optionally, the coupling component comprises an electromagnetic material and a coil wound around the electromagnetic material;

the coil is electrically connected with the circuit board assembly.

Optionally, the vibration conversion assembly comprises a piezoceramic wafer.

Optionally, the circuit board assembly comprises a circuit board, and the voltage ceramic plate is fixed on the circuit board;

the monitoring sensor further comprises a shock absorbing member disposed between the vibration conversion assembly and the circuit board.

Optionally, the shock absorbing member includes a shock absorbing rubber pad.

Optionally, an amplifying circuit is disposed on the circuit board assembly and is used for amplifying the circuit signals in the circuit board assembly.

Optionally, the shell material comprises metal.

Optionally, the monitoring sensor comprises a plurality of springs;

the springs are circumferentially arranged on the coupling assembly, and the other ends of the springs are connected with the inner wall of the mounting cavity.

The utility model also proposes a monitoring device comprising a monitoring sensor comprising:

the coupling component is at least partially arranged in the mounting cavity;

Optionally, the monitoring sensors are arranged in a plurality and distributed at different positions of the transformer.

According to the technical scheme, the load of the transformer is different, the vibration is different, the open-circuit state of the transformer is changed, and the vibration condition is also changed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a monitoring sensor according to an embodiment of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Monitoring sensor	31	Voltage ceramic plate
1	Shell body	4	Circuit board
				2	Coupling assembly	5	Shock absorbing member
21	Electromagnetic material	51	Damping rubber pad
				22	Coil	6	Spring
3	Vibration conversion assembly

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In order to solve the above-mentioned problems, the present utility model provides a monitoring sensor with low cost and low maintenance, wherein fig. 1 is a schematic structural diagram of an embodiment of the monitoring sensor according to the present utility model.

Referring to fig. 1, the monitoring sensor 100 includes a housing 1, a coupling assembly 2, a vibration conversion assembly 3, and a circuit board 4 assembly, wherein the housing 1 is formed with a mounting cavity, the coupling assembly 2 is at least partially disposed in the mounting cavity, the vibration conversion assembly 3 is connected with the coupling assembly 2, so as to convert a feedback signal generated by the coupling assembly 2 into an electrical signal, and the circuit board 4 assembly is disposed in the mounting cavity and is electrically connected with the vibration conversion assembly 3.

According to the technical scheme of the utility model, the load of the transformer is different, the emitted vibration is different, the open-circuit state of the transformer is changed, and the vibration condition is also changed, therefore, the monitoring sensor 100 provided by the utility model can transmit the vibration of the transformer to the vibration conversion assembly 3 through the shell 1 and the coupling assembly 2 arranged in the installation cavity of the shell 1, and convert the vibration signal into an electric signal which can be recognized by a computer terminal through the vibration conversion assembly 3, the vibration frequency emitted by the transformer is different, and the converted electric signal is also different, so that the load condition of the transformer can be monitored through the vibration condition of the transformer.

It will be appreciated that when the load of the transformer changes, in addition to the change of the vibration frequency, the magnetic field around the transformer also changes, so that in order to improve the monitoring sensitivity of the monitoring sensor 100, in an embodiment of the present utility model, the coupling assembly 2 includes an electromagnetic material 21 and a coil 22 wound around the electromagnetic material 21, the coil 22 is electrically connected to the circuit board 4 assembly, and when the magnetic field around the transformer changes due to the change of the load or the change of the operation state, the current generated by the coil 22 also changes, so that the change of the load of the transformer can be monitored by monitoring the change of the current of the coil 22.

It should be explained that, in the present utility model, the vibration converting assembly 3 should include all objects capable of converting vibration signals into electrical signals, based on which, the vibration converting assembly 3 may be a vibration sensing resistor or a voltage ceramic plate 31, which is not limited in this aspect of the present utility model, preferably, in an embodiment of the present utility model, the vibration converting assembly 3 employs the voltage ceramic plate 31, the voltage ceramic plate 31 is connected to the coupling assembly 2, when the coupling assembly 2 collides with the voltage ceramic plate 31 due to vibration, the voltage ceramic plate 31 will transmit electrical signals to the circuit board 4 assembly, the collision frequencies are different, and the transmitted electrical signals are different, so as to convert the vibration signals of the coupling assembly 2 into electrical signals that can be recognized by a computer terminal.

It should be understood that, in the above embodiment, both the electrical signal converted by the piezoelectric ceramic plate and the electrical signal converted by the coil 22 belong to weak signals, so that the electrical signal can be quickly identified by a computer terminal, in one embodiment of the present utility model, the circuit board 4 assembly is provided with an amplifying circuit for amplifying the circuit signal in the circuit board 4 assembly, so that the weak signal converted by the piezoelectric ceramic plate or the coil 22 is amplified into a strong electrical signal that can be more quickly identified by the computer terminal, so as to improve the sensitivity of the monitoring sensor 100.

The circuit board 4 assembly comprises a circuit board 4, the voltage ceramic plate 31 is fixed on the circuit board 4, in order to prevent the circuit board 4 from being damaged when the coupling assembly 2 vibrates, in one embodiment of the utility model, the monitoring sensor 100 further comprises a shock absorbing member 5, and the shock absorbing member 5 is arranged between the vibration conversion assembly 3 and the circuit board 4, so as to achieve the purpose of buffering the impact of the coupling assembly 2.

The shock absorbing member 5 may be a spring or a rubber pad, and in consideration of difficulty in mounting the spring on the circuit board 4, the latter is preferable in the present utility model, and in particular, in an embodiment of the present utility model, the shock absorbing member 5 is a shock absorbing rubber pad 51.

The material of the housing 1 may be plastic or metal, and in order to improve the durability of the housing 1, in an embodiment of the present utility model, the material of the housing 1 may be metal such as iron, copper, or alloy.

To mount the coupling assembly 2 in the mounting cavity, in an embodiment of the present utility model, the monitoring sensor 100 includes a plurality of springs 6, the plurality of springs 6 are circumferentially disposed on the coupling assembly 2, and the other end of the springs 6 is connected to the inner wall of the mounting cavity, so that the housing 1 can transmit the received vibration to the coupling assembly 2 through the springs 6.

The utility model also provides a monitoring device, which comprises a monitoring sensor, wherein the specific structure of the monitoring sensor refers to the embodiment, and as the monitoring device adopts all the technical schemes of all the embodiments, the monitoring device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.

In order to improve the sensitivity of the monitoring device to the transformer test, in an embodiment of the utility model, the monitoring sensors are arranged in a plurality of positions of the transformer, so that the sampling sample of the monitoring device to the transformer is increased, and the sensitivity of the monitoring device is improved.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A monitoring sensor for monitoring transformer load changes, comprising:

the coupling component is at least partially arranged in the mounting cavity;

2. The monitoring sensor of claim 1, wherein the coupling assembly comprises an electromagnetic material and a coil wrapped around the electromagnetic material;

the coil is electrically connected with the circuit board assembly.

3. The monitoring sensor of claim 1, wherein the vibration conversion assembly comprises a voltage ceramic plate.

4. The monitoring sensor of claim 3, wherein the circuit board assembly comprises a circuit board, the voltage ceramic wafer being secured to the circuit board;

5. The monitoring sensor of claim 4, wherein the shock absorbing member comprises a shock absorbing rubber pad.

6. The monitoring sensor of claim 1, wherein the circuit board assembly has amplification circuitry disposed thereon for amplifying the circuit signals in the circuit board assembly.

7. The monitoring sensor of claim 1, wherein the housing material comprises metal.

8. The monitoring sensor of claim 1, wherein the monitoring sensor comprises a plurality of springs;

9. A monitoring device comprising a monitoring sensor according to any one of claims 1 to 8.

10. The monitoring device of claim 9, wherein the monitoring sensors are provided in plurality and are disposed at different locations of the transformer.