CN110657990A - Online monitoring scheme for motor of screw compressor - Google Patents
Online monitoring scheme for motor of screw compressor Download PDFInfo
- Publication number
- CN110657990A CN110657990A CN201911055199.7A CN201911055199A CN110657990A CN 110657990 A CN110657990 A CN 110657990A CN 201911055199 A CN201911055199 A CN 201911055199A CN 110657990 A CN110657990 A CN 110657990A
- Authority
- CN
- China
- Prior art keywords
- vibration
- motor
- plc
- shell
- screw compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses an online monitoring scheme for a screw compressor motor, which comprises a shell, a connecting port, a display screen, an indicator lamp, a key, a mainboard, a vibration sensor, a PLC (programmable logic controller) main control board, a wiring port and a Modbus communication module.
Description
Technical Field
The invention relates to the field of motor vibration monitoring, in particular to an online monitoring scheme for a screw compressor motor.
Background
Screw compressor is also known as screw compressor, divide into single screw compressor and double screw compressor, screw compressor also need use the motor to drive, the bearing all can produce the vibration at the during operation around the motor during operation, the little vibration value of normal condition is less, but it is fixed that the motor exists to explain when the vibration value is great, need maintain, all need use the instrument of monitoring when the vibration value is measured, current adoption vibration test pen, manual detection consumes the manpower, there is the error in data, lead to efficiency reduction.
Disclosure of Invention
Aiming at the problems, the invention provides an online monitoring scheme for a screw compressor motor.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: its structure includes casing, connector, display screen, pilot lamp, button, mainboard, vibration sensor, PLC main control board, wiring mouth and Modbus communication module, the connector has been seted up to the upper left end of terminal surface before the casing, the terminal surface upper end is controlled to both ends embedding before the casing has the display screen, the display screen right side all is provided with the pilot lamp, the lower right end is fixed with the button in the casing, the middle part has the mainboard through the bolt fastening in the casing, terminal surface mid-mounting has the vibration sensor before the mainboard, the welding of the left lower extreme of terminal surface has the PLC main control board before the mainboard, the right lower extreme of PLC main control board docks with the wiring mouth through the connecting wire, PLC main control board bottom is provided with Modbus communication module, connector, display screen, pilot lamp, button, vibration sensor, wiring mouth and Modbus communication module all are connected with PLC main control board electricity.
Preferably, the monitoring method comprises the following steps:
s1, firstly, installing the monitoring device shell on the screw compressor motor;
s2, starting a vibration sensor to start sensing the vibration values of the front bearing and the rear bearing of the motor;
s3, starting the PLC to set a vibration protection value;
s4, transmitting the vibration value sensed by the vibration sensor to the PLC;
s5, if the limit value is exceeded, the PLC alarms to the upper computer through a cable; or the Modbus communication module wirelessly transmits the data to the monitoring room.
Preferably, the indicating lamps are all provided with four groups, a left group of indicating lamps A and E, and a right group of indicating lamps B and C.
Preferably, the keys are provided with five groups, the leftmost end is SET, the rightmost end is A \ M, and the three groups in the middle are direction keys.
Preferably, the bottom of the shell in the middle of S1 is connected with an external extension sensing piece through a wiring port and is respectively attached to the vibration positions of the front bearing and the rear bearing of the motor.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
according to the online monitoring scheme for the motor of the screw compressor, the vibration monitoring device is installed, the built-in vibration sensor monitors the vibration value of the front bearing and the rear bearing of the motor of the screw compressor in real time in an online mode, the plc sets a protection value, if the vibration value exceeds an upper limit, an alarm is rapidly sent to an upper computer, and the vibration value can also be sent to a monitoring room through Modbus communication, so that the purpose of unmanned monitoring is achieved, the requirement of enterprise operation cost is lowered, customers can conveniently use the vibration monitoring device, and the cost of later maintenance can be saved.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an internal structural view of the present invention;
FIG. 3 is a flow chart of the present invention monitoring;
fig. 4 is a diagram of the limit setting of the present invention.
In the figure: the device comprises a shell-1, a connector-2, a display screen-3, an indicator lamp-4, a key-5, a main board-6, a vibration sensor-7, a PLC main control board-8, a wiring port-9 and a Modbus communication module-10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The utility model provides a helical-lobe compressor motor on-line monitoring scheme, which comprises a housin 1, connector 2, display screen 3, pilot lamp 4, button 5, mainboard 6, vibration sensor 7, PLC main control board 8, wiring mouth 9 and Modbus communication module 10, connector 2 has been seted up to the upper left end of the preceding terminal surface of casing 1, both ends embedding has display screen 3 about the upper end of the preceding terminal surface of casing 1, display screen 2 right side all is provided with pilot lamp 4, the lower right end is fixed with button 5 in the casing 1, the middle part has mainboard 6 through the bolt fastening in the casing 1, the terminal surface mid-mounting has vibration sensor 7 before mainboard 6, the welding of the lower left end of the preceding terminal surface of mainboard 6 has been fixed with PLC main control board 8, the lower right end of PLC main control board 8 docks with wiring mouth 9 through the connecting wire, PLC main control board 8 bottom is provided with Modbus communication module 10, connector 2, display screen 3, pilot, And the wiring port 9 and the Modbus communication module 10 are electrically connected with the PLC main control board 8.
The monitoring method comprises the following steps:
s1, firstly, mounting the monitoring device shell on a screw compressor motor, wherein the mounting position of the monitoring device shell is close to the front bearing and the rear bearing of the screw compressor motor;
s2, starting a vibration sensor to start sensing vibration values of front and rear bearings of the motor, and realizing high-efficiency real-time sensing;
s3, starting the PLC to set a vibration protection value, wherein the protection value can refer to the upper and lower limit values of the channel shown in FIG. 4;
s4, transmitting the vibration value sensed by the vibration sensor into the PLC, and comparing the vibration value with a set protection limit value in real time;
s5, if the limit value is exceeded, the PLC alarms to the upper computer through a cable; or the Modbus communication module is wirelessly transmitted to the monitoring room, so that wired transmission or wireless transmission can be realized.
The above steps can be referred to the flow chart of fig. 3, four groups of indicator lamps are arranged in the shell 4, a left group of indicator lamps A and E are arranged, a right group of indicator lamps B and C are used for indicating SET values, vibration values and states exceeding the protection values, the key 5 is provided with five groups, the leftmost end is SET, the rightmost end is A \ M, the middle three groups are direction keys, the number of the middle three groups are stored in the PLC after adjustment, and the middle part of S1 is connected with an external extension sensing piece through a wiring port at the bottom of the shell and is respectively attached to the vibration positions of the front and rear bearings of the motor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a helical-lobe compressor motor on-line monitoring scheme which characterized in that, its structure includes: the device comprises a shell (1), a connecting port (2), a display screen (3), an indicator lamp (4), keys (5), a mainboard (6), a vibration sensor (7), a PLC main control board (8), a wiring port (9) and a Modbus communication module (10), wherein the connecting port (2) is arranged at the upper left end of the front end face of the shell (1), the display screen (3) is embedded at the left end and the right end of the upper front end face of the shell (1), the indicator lamp (4) is arranged at the right side of the display screen (2), the keys (5) are fixed at the lower right end of the inner part of the shell (1), the mainboard (6) is fixed at the middle part of the inner part of the shell (1) through bolts, the vibration sensor (7) is installed at the middle part of the front end face of the mainboard (6), the PLC main control board (8) is fixed at the lower left end of the front end face of the mainboard (6, PLC main control board (8) bottom is provided with Modbus communication module (10), connector (2), display screen (3), pilot lamp (4), button (5), vibration sensor (7), wiring mouth (9) and Modbus communication module (10) all are connected with PLC main control board (8) electricity.
2. The on-line monitoring scheme for the motor of the screw compressor is characterized by comprising the following steps:
s1, firstly, installing the monitoring device shell on the screw compressor motor;
s2, starting a vibration sensor to start sensing the vibration values of the front bearing and the rear bearing of the motor;
s3, starting the PLC to set a vibration protection value;
s4, transmitting the vibration value sensed by the vibration sensor to the PLC;
s5, if the limit value is exceeded, the PLC alarms to the upper computer through a cable; or the Modbus communication module wirelessly transmits the data to the monitoring room.
3. The on-line monitoring scheme for the screw compressor motor according to claim 1 is characterized in that the indicator lights (4) are respectively provided with four groups, namely a left group of indicator lights A and E and a right group of indicator lights B and C.
4. The screw compressor motor on-line monitoring scheme as claimed in claim 1, wherein the keys (5) are provided with five groups, the leftmost end is SET, the rightmost end is A \ M, and the three groups in the middle are direction keys.
5. The scheme as claimed in claim 2, wherein the bottom of the casing at the middle of S1 is connected to an external extension sensor through a wiring port, and the extension sensor is respectively attached to the vibration positions of the front and rear bearings of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055199.7A CN110657990A (en) | 2019-10-31 | 2019-10-31 | Online monitoring scheme for motor of screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055199.7A CN110657990A (en) | 2019-10-31 | 2019-10-31 | Online monitoring scheme for motor of screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110657990A true CN110657990A (en) | 2020-01-07 |
Family
ID=69042595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911055199.7A Pending CN110657990A (en) | 2019-10-31 | 2019-10-31 | Online monitoring scheme for motor of screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110657990A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6507790B1 (en) * | 1998-07-15 | 2003-01-14 | Horton, Inc. | Acoustic monitor |
| CN2795491Y (en) * | 2005-05-18 | 2006-07-12 | 山东铝业股份有限公司 | On-line monitor of screw compressor unit |
| CN204511848U (en) * | 2015-01-22 | 2015-07-29 | 沈阳大学 | A kind of positive displacement compressor working state on-Line Monitor Device |
| CN206311203U (en) * | 2016-12-29 | 2017-07-07 | 北京鸿瑞辰星科技有限公司 | Vibration monitor system integrated meter |
| CN107064796A (en) * | 2017-04-20 | 2017-08-18 | 哈尔滨理工大学 | Intelligent electric machine vibration online monitoring and early warning system |
| CN207816451U (en) * | 2018-02-01 | 2018-09-04 | 北京迪利科技有限公司 | Motor oscillating monitoring device and intelligent electric machine |
| CN208818331U (en) * | 2018-11-07 | 2019-05-03 | 华北电力大学（保定） | A kind of transformer online monitoring device based on vibration |
| CN209372218U (en) * | 2018-12-29 | 2019-09-10 | 戴森优能(北京)新能源科技有限公司 | A kind of motor oscillating abnormal detector |
-
2019
- 2019-10-31 CN CN201911055199.7A patent/CN110657990A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6507790B1 (en) * | 1998-07-15 | 2003-01-14 | Horton, Inc. | Acoustic monitor |
| CN2795491Y (en) * | 2005-05-18 | 2006-07-12 | 山东铝业股份有限公司 | On-line monitor of screw compressor unit |
| CN204511848U (en) * | 2015-01-22 | 2015-07-29 | 沈阳大学 | A kind of positive displacement compressor working state on-Line Monitor Device |
| CN206311203U (en) * | 2016-12-29 | 2017-07-07 | 北京鸿瑞辰星科技有限公司 | Vibration monitor system integrated meter |
| CN107064796A (en) * | 2017-04-20 | 2017-08-18 | 哈尔滨理工大学 | Intelligent electric machine vibration online monitoring and early warning system |
| CN207816451U (en) * | 2018-02-01 | 2018-09-04 | 北京迪利科技有限公司 | Motor oscillating monitoring device and intelligent electric machine |
| CN208818331U (en) * | 2018-11-07 | 2019-05-03 | 华北电力大学（保定） | A kind of transformer online monitoring device based on vibration |
| CN209372218U (en) * | 2018-12-29 | 2019-09-10 | 戴森优能(北京)新能源科技有限公司 | A kind of motor oscillating abnormal detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20180116128A (en) | Fire alarm communication method based on 3-unit chassis structure of independent module combination | |
| CN201517493U (en) | On-line monitoring and fault diagnosis device for mining main ventilator | |
| CN110657990A (en) | Online monitoring scheme for motor of screw compressor | |
| CN112309070A (en) | Normal fire power supply system | |
| CN111045503A (en) | Video splicing wall processor control device | |
| CN111336767A (en) | Remote control and data acquisition system and method for refrigeration house system | |
| CN111122928B (en) | Separately excited power supply device for electric whole set of starting test and supply method thereof | |
| CN205451378U (en) | Computer Room environmental warning system based on wireless network | |
| CN213659611U (en) | Normal fire power supply system | |
| CN211927987U (en) | Electrical complete set of separate excitation power supply device for start test | |
| CN110514956B (en) | But domestic intelligent power distribution safety coefficient of remote monitoring | |
| CN202433728U (en) | System for monitoring running state of mining ventilator on line | |
| CN209925180U (en) | Air compressor control system for realizing function of Internet of things based on Bluetooth technology | |
| CN218446430U (en) | Industrial controller with modular analysis function | |
| CN217210955U (en) | Vacuum pump on-line measuring system | |
| CN217005890U (en) | Digital computer lab intelligence environmental monitoring device | |
| CN216210643U (en) | Visual factory workshop remote data monitoring system based on thing networking | |
| CN220570595U (en) | Visual equipment fault detection system | |
| CN210052042U (en) | Environmental controller | |
| CN210742766U (en) | Outdoor communication cabinet temperature and humidity control device based on wireless technology | |
| CN212807417U (en) | Boxing and stacking pressure sensor | |
| CN211853652U (en) | Lighting system | |
| CN209028464U (en) | Reduce the control system of terminal box heater error control rate | |
| CN220368468U (en) | Remote monitoring protection system for power grid construction equipment | |
| CN210015382U (en) | Multifunctional temperature and humidity control equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200107 |
|
| RJ01 | Rejection of invention patent application after publication |