CN216669057U

CN216669057U - Novel multichannel high accuracy temperature acquisition device

Info

Publication number: CN216669057U
Application number: CN202123213434.4U
Authority: CN
Inventors: 王伦; 王茂松
Original assignee: Sichuan Elbit Technology Co ltd
Current assignee: Sichuan Elbit Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-03
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a novel multi-path high-precision temperature acquisition device which comprises a plurality of acquisition groups which are distributed along the axial direction of a water turbine shaft, wherein each acquisition group comprises two semi-annular mounting rings, the two semi-annular mounting rings can be combined into a complete ring, an arc-shaped bearing bush is arranged in the inner circle direction of each mounting ring, and the bearing bush is combined into a circle after the two mounting rings are combined; and the bearing bush is provided with a temperature sensor, and the temperature sensor is connected with a signal input end of the central processing unit. The novel multi-path high-precision temperature acquisition device monitors the temperature of the bearing bush through the central processing unit in real time, the plurality of acquisition sets correspond to the plurality of monitoring points, and through temperature data of different monitoring points, a maintainer can be prompted to position where friction occurs, so that a good monitoring effect is achieved on the normal operation of a water turbine shaft.

Description

Novel multichannel high accuracy temperature acquisition device

Technical Field

The utility model relates to the field of temperature monitoring of hydraulic turbine units, in particular to a novel multi-channel high-precision temperature acquisition device.

Background

The bearing bush is usually arranged on a water turbine shaft of a power plant, the bearing bush is surrounded to form a concentric circle and is arranged outside the water turbine shaft, a gap exists between the bearing bush and the water turbine shaft, when the water turbine shaft oscillates, the water turbine shaft deviates laterally to contact with the bearing bush, the bearing bush plays a role in stabilizing and supporting the water turbine shaft, but the structure cannot be found by maintenance personnel timely, the bearing bush is possibly contacted with the rotating water turbine shaft for a long time, and the service life of the bearing bush is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides a novel multi-channel high-precision temperature acquisition device. According to the novel multi-path high-precision temperature acquisition device, the acquisition groups are arranged, the bearing bushes are arranged in the acquisition groups, the temperature sensors are arranged in the bearing bushes, and the temperature of the bearing bushes can be increased when the bearing bushes rub against a continuously rotating water turbine shaft.

The technical scheme of the utility model is as follows:

a novel multi-path high-precision temperature acquisition device comprises a plurality of acquisition groups which are distributed along the axial direction of a water turbine shaft, wherein each acquisition group comprises two semi-annular mounting rings, the two semi-annular mounting rings can be combined into a complete ring, an arc-shaped bearing bush is arranged in the inner circle direction of each mounting ring, and the bearing bush is combined into a circular shape after the two mounting rings are combined;

and the bearing bush is provided with a temperature sensor, and the temperature sensor is connected with a signal input end of the central processing unit.

The working principle of the technical scheme is as follows:

when the temperature sensor is used, the temperature sensors respectively collect the temperature of a plurality of points of the water turbine shaft on a plurality of collecting groups along the axial direction of the water turbine shaft, and meanwhile, the temperature sensors on each collecting group are arranged around the water turbine shaft, so that the water turbine shaft is vibrated, the water turbine shaft is contacted with the bearing bush in the vibration direction to generate friction, and a maintainer can immediately react when finding out the temperature rise of a certain point through the central processing unit, so that the water turbine shaft can be recovered to normally run.

According to the novel multi-path high-precision temperature acquisition device, the acquisition groups are arranged, the bearing bushes are arranged in the acquisition groups, the temperature sensors are arranged in the bearing bushes, and the temperature of the bearing bushes can be increased when the bearing bushes rub against a continuously rotating water turbine shaft.

In a further technical scheme, the system further comprises a signal receiving transmitter, and the central processing unit is connected with the signal receiving transmitter.

The signal receiving and sending device can send temperature data of each point of the water turbine shaft to the remote monitoring end for remote monitoring, and further good monitoring effect is achieved.

In a further technical scheme, the wind driven generator further comprises a generator, a current output end of the generator is connected with a power interface of the central processing unit, and an electromagnetic winding of the generator is wound on a shaft of the water turbine.

Through setting up the generator, utilize pivoted water turbine shaft electricity generation, supply whole temperature acquisition device to use, the energy saving has reduced the power demand simultaneously, does not need external power supply, and the setting up of device is more convenient.

In a further technical scheme, a mounting frame is arranged outside the mounting ring, reinforcing ribs are arranged between the mounting ring and the mounting frame, a junction box is arranged on the reinforcing ribs, and a wiring port connected with a line of the temperature sensor is arranged on the junction box.

Stable support is realized to the collar through the mounting bracket, and the setting of terminal box is convenient to be connected with central processing unit simultaneously, and temperature sensor's circuit can be protected.

The utility model has the beneficial effects that:

1. according to the novel multi-path high-precision temperature acquisition device, the acquisition groups are arranged, the bearing bushes are arranged in the acquisition groups, the temperature sensors are arranged in the bearing bushes, and the temperature of the bearing bushes can be increased when the bearing bushes rub against a continuously rotating water turbine shaft.

2. The signal receiving and sending device can send temperature data of each point of the water turbine shaft to the remote monitoring end for remote monitoring, and further good monitoring effect is achieved.

3. Through setting up the generator, utilize pivoted water turbine shaft electricity generation, supply whole temperature acquisition device to use, the energy saving has reduced the power demand simultaneously, does not need external power supply, and the setting up of device is more convenient.

4. Stable support is realized to the collar through the mounting bracket, and the setting of terminal box is convenient to be connected with central processing unit simultaneously, and temperature sensor's circuit can be protected.

Drawings

FIG. 1 is a schematic structural diagram of an acquisition group of a novel multi-path high-precision temperature acquisition device according to an embodiment of the utility model;

FIG. 2 is a schematic view of an axial installation structure of the novel multi-path high-precision temperature acquisition device according to the embodiment of the utility model;

fig. 3 is a schematic circuit diagram of the novel multi-channel high-precision temperature acquisition device according to the embodiment of the utility model.

Reference numerals:

10. collecting groups; 11. a mounting ring; 12. bearing bushes; 13. a connecting arm; 14. a temperature sensor; 15. a mounting frame; 16. reinforcing ribs; 20. a generator; 21. an electromagnetic winding; 30. a central processing unit; 31. a quick-connect terminal; 32. a signal receiving transmitter; 40. a water turbine shaft.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.

Example (b):

the utility model provides a novel multichannel high accuracy temperature acquisition device, as shown in figure 2, including a plurality of collection group 10 that prolongs water turbine shaft 40 axial and arrange, in this embodiment, the quantity of collection group 10 is three, as shown in figure 1, collection group 10 includes two and is semi-annular collar 11, two semi-annular collars 11 can make up and become a complete annular, in this embodiment, fixed platform has been seted up at the junction of two collar 11, be provided with the fixed orifices on this fixed platform, when carrying out collar 11's combination, set up the fixed block and paste on fixed platform, and squeeze into set screw from the fixed block and pass the fixed orifices, make two collar 11 connect. The inner circle direction of the mounting ring 11 is provided with an arc-shaped bearing bush 12, in the embodiment, two bearing bushes 12 are arranged on a single mounting ring 11, and after the two mounting rings 11 are combined, the four bearing bushes 12 are combined into a circle;

in this embodiment, the inner circumferential surface of the mounting ring 11 is connected to the bearing shell 12 by means of a plurality of connecting arms 13, in such a way that a temperature transfer of the bearing shell 12 to the mounting ring 11 is avoided.

In the present embodiment, the number of the temperature sensors 14 is 12 in total. Monitoring is performed on 12 bearing shells 12 of the turbine shaft 40.

In this embodiment, a gap is formed between the bearing pads 12 to prevent the temperature from being transmitted between the bearing pads 12.

The bearing bush 12 is provided with a temperature sensor 14, and the temperature sensor 14 is connected with a signal input end of the central processing unit 30.

In the embodiment, the central processing unit 30 with the model number of 6ES7288-1SR40-0AA0 and the temperature sensor with the model number of WZP-PT100 are selected.

In the present embodiment, the sensors each detect the rotating water turbine shaft 40 by using a non-contact sensor.

In the present embodiment, the central processing unit 30 has 24 signal access ports. The 12 temperature sensors 14 are respectively connected with signal access ports I1.0-I2.1 of the central processing unit 30, and the rest signal ports which are not accessed are reserved for standby.

In this embodiment, the alarm may be performed by connecting a warning light to the output end of the central processing unit 30, which is not described herein again.

The working principle of the technical scheme is as follows:

when the utility model is used, the temperature sensors 14 respectively collect the temperature of a plurality of points of the water turbine shaft 40 on a plurality of collecting groups 10 along the axial direction of the water turbine shaft 40, and meanwhile, a plurality of temperature sensors 14 on each collecting group 10 are arranged around the water turbine shaft 40, so that the water turbine shaft 40 vibrates, the water turbine shaft 40 is in contact with the bearing bush 12 in the vibrating direction to generate friction, and a maintainer can immediately respond to the temperature rise of a certain point through the central processing unit 30 so as to restore the normal operation of the water turbine shaft 40.

According to the novel multi-channel high-precision temperature acquisition device, the acquisition groups 10 are arranged, the bearing bush 12 is arranged in the acquisition groups 10, the temperature sensor 14 is arranged in the bearing bush 12, when the bearing bush 12 is rubbed with the water turbine shaft 40 which rotates continuously, the temperature of the bearing bush 12 can rise, the vibration of the water turbine shaft 40 is indirectly monitored by monitoring the temperature of the bearing bush 12, the temperature of the bearing bush 12 is monitored by the central processing unit 30 in real time, the acquisition groups 10 correspond to a plurality of monitoring points, and through temperature data of different monitoring points, the position where friction occurs can be prompted to maintenance personnel, so that a good monitoring effect is achieved on normal operation of the water turbine shaft 40.

In another embodiment, as shown in fig. 3, a signal receiving/transmitting device 32 is further included, and the central processing unit 30 is connected to the signal receiving/transmitting device 32.

In this embodiment, the signal receiving/transmitting unit 32 with the model of TPC1061TI is selected, the internet port of the signal receiving/transmitting unit 32 is connected to the internet port of the central processing unit 30, and the signal receiving/transmitting unit 32 and the central processing unit 30 are connected to each other through a network cable.

The signal receiving and sending device 32 can send the temperature data of each point of the water turbine shaft 40 to the remote monitoring terminal for remote monitoring, and further good monitoring effect is achieved.

In another embodiment, as shown in fig. 2 and fig. 3, a generator 20 is further included, a current output end of the generator 20 is connected to the power interface of the central processing unit 30, and the electromagnetic winding 21 of the generator 20 is wound on the water turbine shaft 40.

Through setting up generator 20, utilize pivoted water turbine shaft 40 electricity generation, supply whole temperature acquisition device to use, the energy saving has reduced the power demand simultaneously, does not need external power supply, and the erectting of device is more convenient.

In another embodiment, as shown in fig. 1, a mounting frame 15 is disposed outside the mounting ring 11, a reinforcing rib 16 is disposed between the mounting ring 11 and the mounting frame 15, a terminal box is disposed on the reinforcing rib 16, and a connection port connected to a line of the temperature sensor 14 is disposed on the terminal box.

In the present embodiment, the connection port is a quick-connect terminal 31.

The mounting ring 11 is stably supported through the mounting frame 15, meanwhile, the junction box is convenient to arrange and is connected with the central processing unit 30, and circuits of the temperature sensor 14 can be protected.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. A novel multi-path high-precision temperature acquisition device is characterized by comprising a plurality of acquisition groups which are distributed along the axial direction of a water turbine shaft, wherein each acquisition group comprises two semi-annular mounting rings, the two semi-annular mounting rings can be combined into a complete ring, an arc-shaped bearing bush is arranged in the inner circle direction of each mounting ring, and the bearing bush is combined into a circular shape after the two mounting rings are combined;

2. The novel multipath high-precision temperature acquisition device according to claim 1, further comprising a signal receiving and transmitting device, wherein the central processing unit is connected with the signal receiving and transmitting device.

3. A novel multi-channel high-precision temperature acquisition device according to claim 1 or 2, further comprising a generator, wherein the current output end of the generator is connected with the power interface of the central processing unit, and the electromagnetic winding of the generator is wound on the shaft of the water turbine.

4. The novel multipath high-precision temperature acquisition device according to claim 1, wherein a mounting frame is arranged outside the mounting ring, a reinforcing rib is arranged between the mounting ring and the mounting frame, a junction box is arranged on the reinforcing rib, and a wiring port connected with a line of the temperature sensor is arranged on the junction box.