Sensor and assembly for monitoring operation state of rotating equipment

Abstract

The utility model discloses a sensor for monitoring the running state of rotating equipment, which comprises a shell, a circuit board, an antenna and a coil matched with a magnetic block on the rotating equipment to realize power supply and rotating speed detection of the circuit board, and the antenna and the coil are electrically connected with the circuit board; the circuit board and the coil are sealed in the shell, and the antenna is located in an open area in the shell. The state monitoring sensor is compact in structure, convenient to install, suitable for limited installation conditions on an installation site, and especially suitable for being installed in a narrow space between two adjacent carrier rollers distributed in a groove shape. The utility model further discloses an assembly for monitoring the running state of the rotating equipment. Rotating speed detection is achieved through the cooperation effect of the coil and the magnetic block on the rotating equipment, and the power supply requirement of circuit board work is met.

Description

Technical Field

[0001] This application relates to the technical field of monitoring devices, and particularly to a sensor and component for monitoring the operating state of rotating equipment. Background Art

[0002] A belt conveyor mainly consists of a frame, a conveyor belt, idlers, a tensioning device, a driving device, etc. Among them, the idler, as a rotating equipment, mainly plays the role of guiding the conveyor belt to move forward and supporting the weight of the conveyor belt and the materials. After a long time, the idler is prone to faults such as surface wear and bearing jamming. When surface wear occurs, it cannot play the role of supporting the belt, and the rotational speed of the idler will be lower than that of a normally rotating idler, resulting in an increase in the operating resistance of the belt conveyor system; when the bearing jamming problem occurs, the temperature of the idler surface and the shaft will rise, which is likely to cause an increase in the friction between the idler and the belt, shortening the belt life, and potential hazards such as belt high-temperature ignition. In summary, the rotational speed and temperature of the idler are very important for judging the operation of the belt conveyor. Considering the complexity of the on-site installation environment and the limitation of the installation space, it is very necessary to design a sensor structure that is compact and can monitor the operating state of rotating equipment. Summary of the Invention

[0003] The purpose of this application is to provide a sensor structure and component for monitoring the rotational speed and temperature of rotating equipment, which is compact in structure and convenient to install.

[0004] This application is achieved by the following technical measures: A sensor for monitoring the operating state of rotating equipment includes a housing, a circuit board, an antenna, and a coil that cooperates with a magnetic block on the rotating equipment to supply power to the circuit board and detect the rotational speed. The antenna and the coil are both electrically connected to the circuit board; the circuit board and the coil are sealed in the housing, and the antenna is located in the open area of the housing. The "open" in this application refers to the space inside the housing that is not sealed, relative to the sealed state.

[0005] Preferably, it further includes a temperature sensor, the temperature sensor is electrically connected to the circuit board, and the temperature measuring end of the temperature sensor contacts the temperature measuring surface.

[0006] Preferably, the temperature sensor is arranged in the housing, and the housing is provided with a hole through which the temperature measuring end of the temperature sensor can contact the temperature measuring surface.

[0007] Preferably, the housing includes an outer cover with an opening on one side and a cover plate adapted to the opening of the outer cover.

[0008] Preferably, the opening of the outer cover is located at the bottom of the housing.

[0009] Preferably, a partition board is provided inside the housing. The housing is divided into a first space and a second space by the partition board. A notch or hole is provided on the partition board for the connecting wire between the antenna and the circuit board to pass through. The antenna is arranged in the first space, and the circuit board and the coil are sealed in the second space.

[0010] Preferably, the opening of the outer cover is located on one side of the housing.

[0011] Preferably, a mounting plate for fixation is provided at the bottom edge of the housing.

[0012] Preferably, the circuit board and the coil are sealed in the housing with potting compound, and the antenna is located in the non-potting area inside the housing.

[0013] The present application also provides a component for monitoring the operating state of a rotating device, including the sensor as described above, and further including a magnetic block arranged on the rotating device. The coil in the sensor is arranged opposite to the magnetic block, so that when the magnetic block rotates with the rotating device, it cuts the magnetic force lines of the electromagnetic field around the coil.

[0014] Advantages of the present application: (1) Compact structure and convenient installation, suitable for installation conditions with limited installation sites, especially suitable for installation in a narrow space between two adjacent idlers distributed in a trough shape; (2) The temperature monitoring adopts a direct contact detection method, so that the temperature sensor directly contacts the installation panel, and the measured temperature is closer to the actual temperature of the idler; (3) The rotation speed is detected through the cooperation between the coil and the magnetic block on the rotating device, and the power supply requirement for the circuit board to work is met. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application, and do not constitute a limitation to the present application.

[0016] Figure 1 It is a three-dimensional schematic diagram of the rotating device state monitoring sensor in Embodiment 1.

[0017] Figure 2 It is Figure 1 The structure diagram of the outer cover.

[0018] Figure 3 It is Figure 1 The structure diagram after removing the outer cover and the cover plate.

[0019] Figure 4 It is the structure diagram of the outer cover of the rotating device state monitoring sensor in Embodiment 2.

[0020] Figure 5 It is the relative installation schematic diagram of the rotating device state monitoring sensor and the rotating device.

[0021] Figure 6Schematic diagram of the installation of the rotating equipment status monitoring sensor between two adjacent rotating equipment distributed in a trough shape. Detailed implementation mode

[0022] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art. The bottom, side, height, etc. referred to in this application are for the case where the housing is placed horizontally along the length direction (such as the orientation shown in the attached Figure 4 figure, the lower surface is the bottom, the left and right are the sides, and the up and down are the height). In this embodiment, a idler roller is taken as an example to illustrate the monitoring function of the sensor for rotating equipment, but it is not limited to this sensor being applied to other occasions for monitoring other types of rotating equipment.

[0023] A sensor for monitoring the operating state of a rotating equipment, which can be used to monitor the temperature and / or rotation condition of the rotating equipment, includes a housing, a circuit board 210, a coil 220 electrically connected to the circuit board 210, and an antenna 230.

[0024] The housing includes a semi-enclosed outer cover 110 with one side open and a cover plate 120 adapted to the opening of the outer cover. The cover plate 120 covers the opening of the outer cover and is flush with the edge of the outer cover 110. It should be noted that, according to the actual situation, the cover plate can be selected to be added or not.

[0025] Considering the poor sanitary conditions and high environmental humidity at the installation site, the circuit board 210 and the coil 220 are likely to be attached with dust when exposed for a long time, which will affect the sensitivity and function realization of each electrical component over time. Therefore, in this embodiment, the circuit board 210 and the coil 220 need to be sealed in the space housing. The sealing method can adopt baffle sealing, potting sealing or other sealing forms, and the present application does not limit this. The sealing described in this application means that the effect of being isolated from the outside can be achieved, for example, in the form of using a baffle to block the circuit board and the coil so that they are not exposed outside. The following takes potting sealing as an example for description. Embodiment 1

[0026] The open side of the outer cover is located at the bottom of the housing.

[0027] As Figures 1-3 shown, a partition 111 is provided in the outer cover 110. Through this partition 111, the space surrounded by the outer cover 110 is divided into an isolated first space 112 and a second space 113. The antenna 230 is arranged in the first space 112, and the circuit board 210 and the coil 220 are arranged in the second space 113 and sealed by potting.

[0028] A notch or hole is provided on the partition 111 for the connecting wire between the antenna 230 and the circuit board 210 to pass through, and the antenna 230 is electrically connected to the circuit board 210 through this connecting wire. In one case, the size of the circuit board 210 is adapted to the size of the opening of the outer cover 110 corresponding to the second space 113. The coil 220 is located between the circuit board 210 and the outer cover 110, and the height and shape of the outer cover 110 are preferably such that the coil 220 can be just accommodated. Such a layout makes the structure of the entire sensor 100 as compact as possible and the external dimensions of the sensor 100 as small as possible to meet the limited installation conditions on site.

[0029] In another case, the circuit board 210 and the coil 220 can also be erected in the second space 113, that is, arranged along the height direction, and the circuit board 210 is closely attached to the inner wall of the outer cover 110. The height and shape of the outer cover 110 are preferably such that they just conform to the width of the circuit board 210 and the height of the coil 220.

[0030] Mounting plates 115 flush with the outer edges of the external openings are respectively provided on both sides of the outer cover 110. A plurality of mounting holes for fixing the outer cover 110 are provided on the mounting plates 115. For the convenience of processing, the mounting plate 115 can be an integral structure with the outer cover 110 or can be set as a split component according to the situation.

[0031] The idler state monitoring sensor further includes a temperature sensor 240 for monitoring the direct temperature in space and taking it as the idler temperature. In one case, the temperature sensor 240 is electrically connected to the circuit board 210 and protrudes from the opening surface of the outer cover 110. A plurality of limit protrusions 114 are provided at the edge of the outer cover 110 where the second space 113 is located. On the one hand, it is used for the limit of the circuit board 210. During installation, the circuit board 210 with the coil 220 is placed in the second space 113 obliquely. When the circuit board 210 is adjusted to be horizontal, it just covers the opening of the outer cover 110 corresponding to the second space 113 and will not fall out under the action of the limit protrusions 114. On the other hand, the height of the limit protrusions 114 meets the space requirements of the temperature sensor 240

[0032] In the case of including a cover plate, the mounting plate 15 can also be arranged on the cover plate. A hole 121 adapted to the temperature measuring end of the temperature sensor 240 is reserved on the cover plate 120 so that the measured temperature can directly detect the temperature at the installation position. The directness mentioned here includes the case of filling thermal conductive glue between the temperature measuring end and the installation position. Embodiment 2

[0033] The opening side of the outer cover is located on one side of the housing, as Figure 4 shown.

[0034] The housing is divided into a first space and a second space by potting. The housing is erected with the antenna 230 on top, and the circuit board 210 and the coil 220 below. Potting is carried out from top to bottom. The liquid glue wraps the circuit board and the coil and stops potting when approaching the antenna 230. That is, the circuit board and the coil are potted and sealed inside the housing, and the antenna is located in the unpotted area inside the housing.

[0035] The part of the outer cover parallel to the installation surface extends outward to be provided with a mounting plate.

[0036] Other structural forms are the same as those in the first embodiment.

[0037] As an implementation method, as Figure 5 and 6 shown, the sensor 100 is fixedly installed on one side of the idler through the fixing member 400. Specifically, mounting holes through which screws can pass can be provided on the mounting plate of the sensor 100 for fixedly connecting the sensor to the fixing member. As another implementation method, the sensor can also be fixed to the fixing member by potting between the mounting plate and the fixing member. As a third implementation method, the sensor 100 can also be directly fixed at a suitable position as long as the monitoring conditions are met, and the fixing member is not an essential component. The method of fixing the sensor to the fixing member can be selected according to the on-site environment, and the fixing method is not a limitation on the protection scope of this application.

[0038] The coil 220 on the sensor 100 is arranged opposite to the end face of the idler 30, and the position of the coil 220 is adapted to the position of the magnetic block 310 installed on the end face of the idler 30. When the magnetic block 310 rotates with the idler 30, it cuts the magnetic field lines of force around the coil 220 to generate an electric current signal. On the one hand, the collected electric current signal is processed to supply power to the circuit board 210. On the other hand, by counting the number of changes in the electromagnetic field within a certain period of time, the rotation frequency of the idler 30 is determined, and thus the rotation speed of the idler 30 is obtained. As a form of speed measurement, speed measurement can also be realized by using a Hall element to assist the coil.

[0039] Electrical components required for detecting the rotation speed of the idler 30 are installed on the circuit board 210. The antenna 230 is used for externally transmitting the detected rotation speed and temperature signals of the idler 30. The temperature measuring end of the temperature sensor 240 abuts against the fixing member 400 or the installation position to detect the temperature of the fixing member 400 or the installation position, and this is used as the current temperature of the idler. The structural design of the sensor 100 in this embodiment is ingenious. By selecting appropriate electrical components and coils, the external dimensions can be 31.7 mm in length, 36 mm in width, and 20 mm in height, which is very suitable for installation in the narrow space between two adjacent idlers distributed in a trough shape, as Figure 5 shown.

[0040] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

1. A sensor for monitoring the operating status of a rotating device, characterized in that: It includes a shell, a circuit board, an antenna, and a coil that cooperates with a magnetic block on a rotating device to realize power supply to the circuit board and rotation speed detection. The antenna and the coil are electrically connected to the circuit board; the circuit board and the coil are sealed in the shell, and the antenna is located in an open area in the shell.

2. A sensor for monitoring the operating status of a rotating device according to claim 1, characterized in that: It also includes a temperature sensor, which is electrically connected to the circuit board, and a temperature measuring end of the temperature sensor is in contact with the temperature measuring surface.

3. A sensor for monitoring the operating status of a rotating device according to claim 2, characterized in that: The temperature sensor is arranged in the shell, and the shell is provided with a hole for the temperature measuring end of the temperature sensor to contact with the temperature measuring surface.

4. A sensor for monitoring the operating status of a rotating device according to any one of claims 1 to 3, characterized in that: The shell comprises an outer cover with an opening on one side and a cover plate adapted to the opening of the outer cover.

5. A sensor for monitoring the operating status of a rotating device according to claim 4, characterized in that: The outer cover opening is located at the bottom of the shell body.

6. A sensor for monitoring the operating status of a rotating device according to claim 5, characterized in that: A partition is provided in the shell, which divides the shell into a first space and a second space; a notch or a hole is provided on the partition for the connection wire between the antenna and the circuit board to pass through; the antenna is arranged in the first space, and the circuit board and the coil are sealed in the second space.

7. A sensor for monitoring the operating status of a rotating device according to claim 4, characterized in that: The outer cover opening is located at one side of the shell.

8. A sensor for monitoring the operating status of a rotating device according to any one of claims 1 to 3, characterized in that: A mounting plate for fixing is provided at the bottom edge of the shell.

9. A sensor for monitoring the operating status of a rotating device according to any one of claims 1 to 3, characterized in that: The circuit board and the coil are sealed in the shell by glue filling, and the antenna is located in the non-glue filling area in the shell.

10. A component for monitoring the operating status of a rotating device, comprising a sensor as claimed in any one of claims 1 to 3, characterized in that: It also includes a magnetic block arranged on the rotating device; the coil in the sensor is arranged opposite to the magnetic block, so that the magnetic block cuts the electromagnetic field magnetic lines around the coil when the rotating device rotates.

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