CN210833676U - Temperature and noise integrated sensor - Google Patents
Temperature and noise integrated sensor Download PDFInfo
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- CN210833676U CN210833676U CN201922376198.4U CN201922376198U CN210833676U CN 210833676 U CN210833676 U CN 210833676U CN 201922376198 U CN201922376198 U CN 201922376198U CN 210833676 U CN210833676 U CN 210833676U
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- conditioning circuit
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Abstract
The utility model provides a temperature, noise integral type sensor, its characterized in that: the metal protective tube is internally provided with a thermal resistor or a thermocouple; the metal protection pipe is fixed on the fixing element, and the fixing element is fixed in the mounting hole of the bearing seat; the end part of the metal protection pipe is contacted with the bearing outer ring; the fixed element is connected with the sensor shell; the other end of the metal protection tube extends into the sensor shell, the thermal resistor or the thermocouple is connected with the temperature measuring circuit, the temperature measuring circuit is connected with the temperature signal conditioning circuit, and the temperature signal conditioning circuit outputs a temperature signal; the part of the metal protection tube, which is positioned in the sensor shell, is fixedly connected with a sound pick-up, the sound pick-up is connected with a noise signal conditioning circuit through a lead, and the noise signal conditioning circuit outputs a noise signal; the power supply circuit is respectively connected with the noise signal conditioning circuit and the temperature signal conditioning circuit through leads and supplies power. The utility model provides a have integral type temperature, noise sensor of security, economic nature, high efficiency, accuracy nature concurrently.
Description
Technical Field
The utility model relates to a sensor field especially relates to the detection of mechanical equipment bearing temperature and noise.
Background
An inserted thermal resistor or thermocouple temperature sensor commonly used for detecting the temperature of the existing bearing is fixed on a bearing seat through a mounting hole on the bearing seat, and the thermal resistor or thermocouple is contacted with an outer ring of the bearing to measure the temperature of the bearing;
or the surface of the equipment is manually measured by an infrared thermometer;
the noise detection is used for hearing the noise generated by the operation of the bearing or equipment by contacting the position of the bearing seat with an auditory bar or a stethoscope on site;
or a microphone is additionally arranged to collect the noise generated by the operation of the field equipment in real time.
The disadvantages of the prior art are as follows:
the temperature sensor arranged on the bearing seat can only collect a single bearing temperature signal and cannot evaluate the overall state of the equipment according to the temperature signal;
the infrared thermometer can only detect the temperature of the surface of the equipment, cannot measure the actual temperature inside the equipment, needs manual field operation, and is low in efficiency and unsafe;
the noise generated when the bearing or the equipment runs is heard by contacting the position of the bearing seat with a listening rod or a stethoscope, the noise needs to be heard manually under the condition that the equipment runs, the safety is poor, the efficiency is low, and an experienced engineer is needed for accurately judging the state of the equipment, so that the requirement of workers is high;
the microphone is additionally arranged to collect noise signals, so that the background noise is large, and the identification and processing of the noise signals inside the equipment are difficult.
SUMMERY OF THE UTILITY MODEL
The utility model provides a temperature, noise integral type sensor, its purpose is to solve prior art's shortcoming, provides one kind to the detection of mechanical equipment especially bearing temperature and noise and has integral type temperature, noise sensor of security, economic nature, high efficiency, accuracy nature concurrently, the state of aassessment bearing and mechanical equipment that can be more comprehensive.
The utility model provides a technical scheme that its technical problem adopted is:
temperature, noise integral type sensor, its characterized in that:
the metal protective tube is internally provided with a thermal resistor or a thermocouple;
the metal protection tube is inserted into the through hole of the fixing element and fixed on the fixing element,
the fixing element penetrates through and is fixed in the mounting hole of the bearing seat;
the end part of the metal protection pipe is contacted with the bearing outer ring;
the fixed element is connected with the sensor shell;
the other end of the metal protection tube extends into the sensor shell, a lead connected with a thermal resistor or a thermocouple extends into the sensor shell from an opening at the other end, the thermal resistor or the thermocouple is connected with a temperature measuring circuit through the lead, the temperature measuring circuit is connected with a temperature signal conditioning circuit through the lead, and a temperature signal output by the temperature signal conditioning circuit is output from an output joint through the lead;
the part of the metal protection tube, which is positioned in the sensor shell, is fixedly connected with a sound pick-up, the sound pick-up is connected with the noise signal conditioning circuit through a lead, and a noise signal output by the noise signal conditioning circuit is output from the output connector through the lead;
the power supply circuit is respectively connected with the noise signal conditioning circuit and the temperature signal conditioning circuit through leads and supplies power.
The sound pick-up, the noise signal conditioning circuit, the temperature measuring circuit and the power supply circuit are packaged in the sensor shell.
The fixing element is screwed in the internal thread of the mounting hole of the bearing seat through the external thread arranged on the outer wall.
The output connector is in the form of a 5-core aviation plug.
The utility model discloses an useful part lies in:
the integrated sensor can acquire temperature signals and noise signals in real time in the running state of equipment, reduces the cost of equipment installation and maintenance, is safer in noise signal acquisition and higher in signal-to-noise ratio, can integrate the acquired signals in a master control system, is convenient for continuous monitoring, and can comprehensively detect the running state of a bearing and even mechanical equipment.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor.
As shown in fig. 1:
the probe 1 is internally provided with a thermal resistor or a thermocouple 11, and externally provided with a metal protection tube 12;
the metal protection tube 12 is inserted into the through hole of the fixing element 2 and fixed on the fixing element 2, and the outer wall of the fixing element 2 is provided with an external thread.
The fixing element 2 is screwed with external threads into internal threads of a mounting hole 81 of the bearing block 8 and passes through the mounting hole 81.
The end of the metal protection tube 12 extending into the bearing seat 8 is in contact with the bearing outer ring 9.
The end of the fastening element 2 outside the bearing seat 8 is externally screwed to the sensor housing 3 by means of an internal thread.
One end of the metal protection tube 12 extends into the sensor shell 3, a lead connected with the thermal resistor or the thermocouple 11 extends into the sensor shell 3 from an opening of the end, the thermal resistor or the thermocouple 11 is connected with the temperature measuring circuit 31 through the lead, and the temperature measuring circuit 31 carries out temperature compensation on the thermocouple (the thermal resistor is not needed), amplifies the resistance value change of the thermal resistor or the thermocouple 11 and converts the resistance value change into a voltage signal;
the temperature measuring circuit 31 is connected with the temperature signal conditioning circuit 32 through a lead, and the temperature signal conditioning circuit 32 outputs a 4-20mA standard current signal, namely a temperature signal, after performing voltage stabilization filtering, operational amplification, nonlinear correction, V/I conversion and the like on the signal; the temperature signal is output from the output terminal 4 through a wire.
The part of the metal protection tube 12 positioned in the sensor shell 3 is fixedly connected with a sound pick-up 33, the metal protection tube 12 can transmit the noise of the operation of the bearing to the sound pick-up 33 because of contacting with the outer ring 9 of the bearing, the sound pick-up 33 is connected with a noise signal conditioning circuit 34 through a lead, the noise signal conditioning circuit 34 carries out low-pass filtering, amplification, A/D conversion and other processing on the noise signal and then outputs the noise signal such as a 4-20mA standard current signal or a 0-5V standard voltage signal; the noise signal is output from the output terminal 4 through a wire.
The power supply circuit 35 is connected to the noise signal conditioning circuit 34 and the temperature signal conditioning circuit 32 through wires, respectively, and supplies power.
The sound pickup 33, the noise signal conditioning circuit 34, the temperature signal conditioning circuit 32, the temperature measuring circuit 31, and the power supply circuit 35 are enclosed in the sensor housing 3.
The sound pickup 33, the noise signal conditioning circuit 34, the temperature signal conditioning circuit 32, the temperature measuring circuit 31, and the power supply circuit 35 are all prior art circuits.
The output connector 4 is in a 5-core aviation plug form, and respectively outputs a noise signal, a temperature signal and grounding, and simultaneously provides positive and negative access of a power supply.
The utility model discloses an integral type sensor can realize under equipment running state, gathers temperature signal, noise signal in real time, has reduced the equipment and has installed and maintain the cost additional, and wherein noise signal gathers safelyr, has higher SNR, and can be integrated at the major control system with the signal of gathering, the monitoring of being convenient for last, detection bearing that can be comprehensive and even mechanical equipment's running state.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. Temperature, noise integral type sensor, its characterized in that: the metal protective tube is internally provided with a thermal resistor or a thermocouple; the metal protection pipe is inserted into the through hole of the fixing element and fixed on the fixing element, and the fixing element penetrates through and is fixed in the mounting hole of the bearing seat; the end part of the metal protection pipe is contacted with the bearing outer ring; the fixed element is connected with the sensor shell; the other end of the metal protection tube extends into the sensor shell, a lead connected with a thermal resistor or a thermocouple extends into the sensor shell from an opening at the other end, the thermal resistor or the thermocouple is connected with a temperature measuring circuit through the lead, the temperature measuring circuit is connected with a temperature signal conditioning circuit through the lead, and a temperature signal output by the temperature signal conditioning circuit is output from an output joint through the lead; the part of the metal protection tube, which is positioned in the sensor shell, is fixedly connected with a sound pick-up, the sound pick-up is connected with the noise signal conditioning circuit through a lead, and a noise signal output by the noise signal conditioning circuit is output from the output connector through the lead; the power supply circuit is respectively connected with the noise signal conditioning circuit and the temperature signal conditioning circuit through leads and supplies power.
2. The integrated temperature and noise sensor of claim 1, wherein: the sound pick-up, the noise signal conditioning circuit, the temperature measuring circuit and the power supply circuit are packaged in the sensor shell.
3. The integrated temperature and noise sensor of claim 1, wherein: the fixing element is screwed in the internal thread of the mounting hole of the bearing seat through the external thread arranged on the outer wall.
4. The integrated temperature and noise sensor of claim 1, wherein: the output connector is in the form of a 5-core aviation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922376198.4U CN210833676U (en) | 2019-12-26 | 2019-12-26 | Temperature and noise integrated sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922376198.4U CN210833676U (en) | 2019-12-26 | 2019-12-26 | Temperature and noise integrated sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210833676U true CN210833676U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922376198.4U Active CN210833676U (en) | 2019-12-26 | 2019-12-26 | Temperature and noise integrated sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210833676U (en) |
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2019
- 2019-12-26 CN CN201922376198.4U patent/CN210833676U/en active Active
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