CN104330653A - Marine central slip ring box intelligent detection device - Google Patents
Marine central slip ring box intelligent detection device Download PDFInfo
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- CN104330653A CN104330653A CN201410527255.3A CN201410527255A CN104330653A CN 104330653 A CN104330653 A CN 104330653A CN 201410527255 A CN201410527255 A CN 201410527255A CN 104330653 A CN104330653 A CN 104330653A
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- Prior art keywords
- slip ring
- ring box
- control unit
- box
- main control
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- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 230000005693 optoelectronics Effects 0.000 claims description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- 229910052799 carbon Inorganic materials 0.000 claims description 30
- 230000003993 interaction Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
Provided is a marine central slip ring box intelligent detection device which comprises a temperature control anti-damping unit and a master control unit. The master control unit is connected with a marine equipment master control system PLC in a communication way. The temperature control anti-damping unit comprises a heater, a cooling fan and multipath temperature sensors (1). The path number of the temperature sensors (1) is consistent with the number of slip rings of a slip ring box. The multipath temperature sensors (1) are respectively installed on all the slip rings of the slip ring box, and the multipath temperature sensors (1) are respectively connected with the master control unit. The heater and the cooling fan are respectively connected with the master control unit. The detected temperature signal is fed back to the master control unit by the multipath temperature sensors (1), and the master control unit automatically controls startup and shutdown of the cooling fan and the heater so that intelligent control of temperature and humidity of the central slip ring box can be realized.
Description
Technical field
The present invention relates to a kind of slip ring box pick-up unit, relate to a kind of center peculiar to vessel slip ring box intelligent detection device in particular, belong to boats and ships and technical field of measurement and test.
Background technology
Center peculiar to vessel slip ring box is a kind of power transfer peculiar to vessel being widely used in the occasions such as rotary table, hoisting device high building, reel, and it mainly realizes the transmission of electric energy between electromechanical equipment relative movement part.Center peculiar to vessel slip ring box usually work in humidity high, vibrate the severe marine environment such as large, and its installation site is without human attendance, therefore needs to detect slip ring box; If slip ring box duty detects not in time, easily cause serious security incident.
At present, existing center peculiar to vessel slip ring box pick-up unit mainly comprises well heater, slewing limit control device and monitoring main control unit, thus realizes the monitoring of slip ring box wet temp and slewing limit control.Heater configuration is inner at slip ring box, and it carries out monitoring temperature, and detailed process is as follows: when the setting value of temperature detect switch (TDS) during temperature value is lower than well heater, and well heater brings into operation; When temperature reaches the setting value of temperature detect switch (TDS) in well heater, well heater quits work, and this kind of mode is mainly used in heating and drives tide.Slewing limit control device comprises limit switch and limit guide rail, and limit switch is arranged on the rotor upper box of slip ring box, and limit guide rail is arranged on the stator lower box of slip ring box; During work, if limit switch bumps against the positive stop in limit guide rail, then limit switch contact disconnects, detection signal is fed back to monitoring main control unit by limit switch contact, detection signal is fed back to shipborne equipment master control system PLC by monitoring main control unit further, thus achieve the restriction of slip ring box angle of revolution, center, and then achieve the control of slip ring box slewing limit.But the pick-up unit of this kind of slip ring box has following defect: one, well heater is heated to be automatic control, under, high humidity environment high in temperature, artificially cannot start well heater, therefore cannot realize driving tide, space heating.Two, slewing limit control mode can only realize the detection of turning round continuum, function singleness, cannot realize multizone angle and detect; And limit switch controls to there is time delay, thus affect control accuracy, make control accuracy low.
Summary of the invention
The object of the invention is to artificially cannot initiatively carry out problems such as heating, slewing limit control accuracy is low for existing center peculiar to vessel slip ring box pick-up unit, a kind of center peculiar to vessel slip ring box intelligent detection device is provided.
For achieving the above object, technical solution of the present invention is: a kind of center peculiar to vessel slip ring box intelligent detection device, comprise temperature control and drive damp unit and main control unit, communicate to connect between described main control unit and shipborne equipment master control system PLC, described temperature control is driven damp unit and is comprised well heater, cooling fan and multi way temperature sensor, described temperature sensor way is consistent with the slip ring progression of slip ring box, multi way temperature sensor is arranged on the slip rings at different levels of slip ring box respectively, and multi way temperature sensor is connected with main control unit respectively, described well heater is connected with main control unit respectively with cooling fan.
Also include angular encoder, described angular encoder connects on dish under being arranged on slip ring box, and angular encoder is connected with main control unit.
Also include optoelectronic switch, described optoelectronic switch is arranged on the first order slip ring of slip ring box stator lower box, and described optoelectronic switch is connected with main control unit.
Described optoelectronic switch is fixed on the first order slip ring of slip ring box stator lower box by mounting bracket.
The quantity of described optoelectronic switch is consistent with the carbon brush quantity on slip ring box stator lower box first order slip ring, and the upper and lower vertical alignment of carbon brush on optoelectronic switch and slip ring box stator lower box first order slip ring.
Described main control unit comprises dsp controller, man-machine interaction unit, communication unit and detecting unit, described detecting unit comprises temperature sensing circuit and photoelectric detective circuit, and described man-machine interaction unit, communication unit are connected with dsp controller respectively with detecting unit.
Described communication unit interface is RS485 interface.
Described multi way temperature sensor is arranged on the carbon brush surface of contact of slip ring box slip ring at different levels respectively.
compared with prior art, the invention has the beneficial effects as follows:
1, the Intelligent Measurement realizing slip ring box temperature and humidity controls.The present invention includes temperature control and drive damp unit and main control unit, communicate to connect between main control unit and shipborne equipment master control system PLC, temperature control is driven damp unit and is comprised well heater, cooling fan and multi way temperature sensor, temperature sensor way is consistent with the slip ring progression of slip ring box, multi way temperature sensor is arranged on the slip rings at different levels of slip ring box respectively, and multi way temperature sensor is connected with main control unit respectively, described well heater is connected with main control unit respectively with cooling fan; During work, the temperature signal detected is fed back to main control unit by multi way temperature sensor, the startup of the automatic controlled cooling model fan of main control unit and well heater and closedown, thus realizes the Based Intelligent Control to center slip ring box temperature and humidity.
2, also include angular encoder in the present invention, angular encoder connects on dish under being arranged on slip ring box, and angular encoder is connected with main control unit; Angular encoder can Real-Time Monitoring shipborne equipment rotation angle value, and is transferred to main control unit and carries out Data Analysis Services, and detect to realize slip ring angle, this kind of accuracy of detection is high, and reliability is strong, and the subregion that can realize different angles value controls.
3, also include optoelectronic switch in the present invention, optoelectronic switch is arranged on the first order slip ring of slip ring box stator lower box, and described optoelectronic switch is connected with main control unit; Optoelectronic switch realizes carbon brush fault detection capability, thus makes it possible to safeguard in time or change carbon brush.
accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is temperature sensor scheme of installation in the present invention.
In Fig. 3 the present invention, temperature control is driven damp unit and is connected block diagram with main control unit.
Main control unit structured flowchart in Fig. 4 the present invention.
Optoelectronic switch scheme of installation in Fig. 5 the present invention.
In Fig. 6 the present invention, optoelectronic switch is connected block diagram with main control unit.
In figure, temperature sensor 1, optoelectronic switch 2.
Embodiment
Illustrate that the present invention is described in further detail with embodiment below in conjunction with accompanying drawing.
See Fig. 1 to Fig. 3, a kind of center peculiar to vessel slip ring box intelligent detection device, comprises temperature control and drives damp unit and main control unit, communicate to connect between described main control unit and shipborne equipment master control system PLC.Slip ring box is a kind of electric energy gearing, it realizes two electric power mutually between dynamic moving component and Signal transmissions, slip ring box comprises slip ring at different levels, stator side and rotor-side, and stator side refers to geo-stationary side in slip ring box, and rotor-side refers to the center driving parts of slip ring box.Stator side and the rotor-side of center peculiar to vessel slip ring box are made up of upper lower box respectively, i.e. stator lower box and rotor upper box; Slip ring as central rotation parts respectively by connect dish be connected with rotor upper box, pass through under connect coil and be connected with stator lower box, under connect the base bearing realization rotation of coiling by being installed on stator lower box.Described temperature control is driven damp unit and is comprised well heater, cooling fan and multi way temperature sensor 1, described temperature sensor 1 way is consistent with the slip ring progression of slip ring box, multi way temperature sensor 1 is arranged on the slip rings at different levels of slip ring box respectively, namely every one-level slip ring installs a road temperature sensor 1; And multi way temperature sensor 1 is connected with main control unit respectively; Described well heater is connected with main control unit respectively with cooling fan, and well heater and cooling fan are separately positioned in slip ring box.
See Fig. 4, described main control unit comprises dsp controller, man-machine interaction unit, communication unit and detecting unit, and described detecting unit comprises temperature sensing circuit and photoelectric detective circuit; Described man-machine interaction unit, communication unit are connected with dsp controller respectively with detecting unit.Described dsp controller is the core cell of main control unit; Described man-machine interaction unit is generally display screen, and it mainly realizes real-time display parameter and instruction of reporting to the police, and mainly comprises Temperature displaying, angle of revolution display and other warning functions; Described communication unit mainly realizes dsp controller and communicates with angular encoder and data communication between shipborne equipment master control system PLC.Described communication unit interface is serial RS485 interface, and namely communication unit adopts RS485 communication modes.
See Fig. 1 to Fig. 4, in the course of the work, temperature rise produces primarily of main power level slip ring center peculiar to vessel slip ring box, the main power carbon brush of every one-level and center copper ring rubs and in conduct electrical energy process, can form local big current, thus cause local temperature too high; And the metal material all conducted electricity very well due to brush holder and copper ring, therefore forming heat transfer very soon, therefore described multi way temperature sensor 1 is arranged on the carbon brush surface of contact of slip ring box slip ring at different levels respectively.During work, the temperature signal detected is fed back to dsp controller by the detecting unit of main control unit by multi way temperature sensor 1, and temperature value is presented on man-machine interaction unit by dsp controller on the one hand; The setting value that dsp controller provides according to shipborne equipment master control system PLC on the other hand carries out data analysis, if the setting value that temperature value provides higher than shipborne equipment master control system PLC, then dsp controller sends cooling fan startup in order-driven slip ring box, thus temperature in the slip ring of reduction slip ring box; If the setting value that temperature value provides lower than shipborne equipment master control system PLC, then dsp controller to send in order-driven slip ring box cooling fan and closes, thus temperature in the slip ring no longer reducing slip ring box; If the setting value that temperature value provides lower than shipborne equipment master control system PLC, then dsp controller sends order-driven heater, temperature increase in slip ring box, and humidity also constantly reduces; If the setting value that temperature value provides higher than shipborne equipment master control system PLC, then dsp controller sends order-driven and closes well heater.During work, artificial mode selection can also be carried out by the man-machine interaction unit of main control unit, force start cooling fan and well heater.Meanwhile, temperature value is fed back to shipborne equipment master control system PLC by dsp controller, is used to indicate or controls to use; And dsp controller is by communication connection, when can receive the steering order of shipborne equipment master control system PLC, thus also can the operation of artificially control heater and cooling fan.
See Fig. 1, can there is relative motion between the stator lower box of center peculiar to vessel slip ring box and rotor upper box, therefore this center peculiar to vessel slip ring box intelligent detection device also includes angular encoder, and angular encoder is connected with main control unit; Connect on dish under described angular encoder is arranged on slip ring box, be specially down to connect on dish and be provided with the mechanical joints be connected with angular encoder.Angular encoder can Real-Time Monitoring shipborne equipment rotation angle value, and the multizone angle of revolution realizing slip ring is detected; This kind of accuracy of detection is high, and reliability is strong, and the subregion that can realize different angles value controls.During work, angular samples value is transferred to dsp controller by the communication unit of main control unit by angular encoder, dsp controller is through data analysis, sampling processing etc., on the one hand angle-data is shown on man-machine interaction unit, data are sent to shipborne equipment master control system PLC by communication unit by dsp controller on the other hand, shipborne equipment master control system PLC, according to control panel operation demand situation peculiar to vessel, controls accordingly.
See Fig. 1, Fig. 5 to Fig. 6, the carbon brush of center peculiar to vessel slip ring box in use, continuous and copper ring produces and rubs, and there is certain serviceable life in carbon brush self, the serviceable life of carbon brush and own material, copper ring hardness and smooth finish closely bound up, brush holder also constantly can compress carbon brush simultaneously, and therefore carbon brush can produce wearing and tearing and fault in the course of the work, and due to each level work environment of slip ring of center peculiar to vessel slip ring box, working time is basically identical, the working condition of the carbon brush on every grade of slip ring, material is basically identical, therefore the carbon brush abrasion situation of every one-level slip ring is basically identical, consider cost control, adopt carbon brush on the first order slip ring of slip ring box stator lower box to detect to check as whole slip ring carbon brush, therefore this center peculiar to vessel slip ring box intelligent detection device also includes optoelectronic switch 2 to realize carbon brush fault detection capability, described optoelectronic switch 2 is arranged on the first order slip ring of slip ring box stator lower box, described optoelectronic switch 2 is connected with main control unit.Further, described optoelectronic switch 2 is fixed on the first order slip ring of slip ring box stator lower box by mounting bracket.The quantity of described optoelectronic switch 2 is consistent with the carbon brush quantity on slip ring box stator lower box first order slip ring; And optoelectronic switch 2 and the upper and lower vertical alignment of carbon brush on slip ring box stator lower box first order slip ring, present lower vertical alignment relation with carbon brush when namely optoelectronic switch 2 is arranged, and control in suitable distance.Optoelectronic switch 2 is used for detecting the carbon brush abrasion state of slip ring box stator lower box first order slip ring, thus makes it possible to safeguard in time or change carbon brush.The slip ring of center peculiar to vessel slip ring box is at the use initial stage, and optoelectronic switch 2 can detect carbon brush edge; When carbon brush reaches serviceable life soon, optoelectronic switch 2 can't detect carbon brush edge, now the detection probe of optoelectronic switch 2 detects carbon brush malposition, then the level signal of optoelectronic switch 2 changes, optoelectronic switch 2 passes through the detecting unit transmission level signal of main control unit to dsp controller simultaneously, thus realizes the detection to carbon brush abrasion state.Detection signal is transferred to shipborne equipment master control system PLC by data transmission by the dsp controller of main control unit on the one hand, is supplied to equipment operator and changes; On the other hand, microcontroller PLC signal transmission, to display screen, realizes warning reminding.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, said structure all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a center peculiar to vessel slip ring box intelligent detection device, comprise temperature control and drive damp unit and main control unit, communicate to connect between described main control unit and shipborne equipment master control system PLC, it is characterized in that: described temperature control is driven damp unit and comprised well heater, cooling fan and multi way temperature sensor (1), described temperature sensor (1) way is consistent with the slip ring progression of slip ring box, multi way temperature sensor (1) is arranged on the slip rings at different levels of slip ring box respectively, and multi way temperature sensor (1) is connected with main control unit respectively, described well heater is connected with main control unit respectively with cooling fan.
2. one according to claim 1 center peculiar to vessel slip ring box intelligent detection device, is characterized in that: also include angular encoder, and described angular encoder connects on dish under being arranged on slip ring box, and angular encoder is connected with main control unit.
3. one according to claim 1 center peculiar to vessel slip ring box intelligent detection device, it is characterized in that: also include optoelectronic switch (2), described optoelectronic switch (2) is arranged on the first order slip ring of slip ring box stator lower box, and described optoelectronic switch (2) is connected with main control unit.
4. one according to claim 3 center peculiar to vessel slip ring box intelligent detection device, is characterized in that: described optoelectronic switch (2) is fixed on the first order slip ring of slip ring box stator lower box by mounting bracket.
5. the center peculiar to vessel of the one according to claim 3 or 4 slip ring box intelligent detection device, it is characterized in that: the quantity of described optoelectronic switch (2) is consistent with the carbon brush quantity on slip ring box stator lower box first order slip ring, and optoelectronic switch (2) and the upper and lower vertical alignment of carbon brush on slip ring box stator lower box first order slip ring.
6. one according to claim 1 center peculiar to vessel slip ring box intelligent detection device, it is characterized in that: described main control unit comprises dsp controller, man-machine interaction unit, communication unit and detecting unit, described detecting unit comprises temperature sensing circuit and photoelectric detective circuit, and described man-machine interaction unit, communication unit are connected with dsp controller respectively with detecting unit.
7. one according to claim 6 center peculiar to vessel slip ring box intelligent detection device, is characterized in that: described communication unit interface is RS485 interface.
8. one according to claim 1 center peculiar to vessel slip ring box intelligent detection device, is characterized in that: described multi way temperature sensor (1) is arranged on the carbon brush surface of contact of slip ring box slip ring at different levels respectively.
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CN201410527255.3A CN104330653A (en) | 2014-10-09 | 2014-10-09 | Marine central slip ring box intelligent detection device |
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CN201410527255.3A CN104330653A (en) | 2014-10-09 | 2014-10-09 | Marine central slip ring box intelligent detection device |
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CN201410527255.3A Pending CN104330653A (en) | 2014-10-09 | 2014-10-09 | Marine central slip ring box intelligent detection device |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106229783A (en) * | 2016-08-31 | 2016-12-14 | 陕西旋星电子科技有限公司 | A kind of slip ring with on-line automatic diagnostic function |
CN107976628A (en) * | 2017-11-22 | 2018-05-01 | 三集团有限公司北京分公司 | Collector ring experimental rig, collector ring pilot system and test method |
CN108051677A (en) * | 2017-12-13 | 2018-05-18 | 杭州欣扬科技有限公司 | Slip ring signal transmission device for detecting performance and control method |
CN109471028A (en) * | 2018-11-22 | 2019-03-15 | 深圳市默孚龙科技有限公司 | A kind of slip-ring brush test equipment |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2614884A1 (en) * | 1975-04-16 | 1977-01-20 | Sigma Generalni Reditelstvi | Hydrodynamic sliding ring seal for reactor water pump - has coolers around capillary tubes interconnecting different sealing stages |
CN1395343A (en) * | 2001-06-28 | 2003-02-05 | 西门子公司 | Apparatus for detecting sliding contact parts of electric rotary equipment |
CN102627232A (en) * | 2012-04-17 | 2012-08-08 | 中联重科股份有限公司 | Gyration angle monitoring device, method and system as well as engineering mechanical equipment |
CN203728332U (en) * | 2014-01-27 | 2014-07-23 | 史建忠 | Cable reel of program-controlled damp flooding slip ring box |
CN205240772U (en) * | 2015-10-12 | 2016-05-18 | 赫杰姆机电科技(西安)有限责任公司 | Special sliding ring case of humid environment stacker -reclaimer |
-
2014
- 2014-10-09 CN CN201410527255.3A patent/CN104330653A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2614884A1 (en) * | 1975-04-16 | 1977-01-20 | Sigma Generalni Reditelstvi | Hydrodynamic sliding ring seal for reactor water pump - has coolers around capillary tubes interconnecting different sealing stages |
CN1395343A (en) * | 2001-06-28 | 2003-02-05 | 西门子公司 | Apparatus for detecting sliding contact parts of electric rotary equipment |
CN102627232A (en) * | 2012-04-17 | 2012-08-08 | 中联重科股份有限公司 | Gyration angle monitoring device, method and system as well as engineering mechanical equipment |
CN203728332U (en) * | 2014-01-27 | 2014-07-23 | 史建忠 | Cable reel of program-controlled damp flooding slip ring box |
CN205240772U (en) * | 2015-10-12 | 2016-05-18 | 赫杰姆机电科技(西安)有限责任公司 | Special sliding ring case of humid environment stacker -reclaimer |
Non-Patent Citations (1)
Title |
---|
曹红军: "港口高压电缆卷筒滑环箱防凝露措施", 《港口科技》 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106229783A (en) * | 2016-08-31 | 2016-12-14 | 陕西旋星电子科技有限公司 | A kind of slip ring with on-line automatic diagnostic function |
CN107976628A (en) * | 2017-11-22 | 2018-05-01 | 三集团有限公司北京分公司 | Collector ring experimental rig, collector ring pilot system and test method |
CN108051677A (en) * | 2017-12-13 | 2018-05-18 | 杭州欣扬科技有限公司 | Slip ring signal transmission device for detecting performance and control method |
CN108051677B (en) * | 2017-12-13 | 2020-02-14 | 杭州欣扬科技有限公司 | Slip ring signal transmission performance detection device and control method |
CN109471028A (en) * | 2018-11-22 | 2019-03-15 | 深圳市默孚龙科技有限公司 | A kind of slip-ring brush test equipment |
CN109471028B (en) * | 2018-11-22 | 2021-03-30 | 深圳市默孚龙科技有限公司 | Slip ring electric brush test equipment |
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