CN202880393U - Slag conveyor scraper skewness measuring device - Google Patents
Slag conveyor scraper skewness measuring device Download PDFInfo
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- CN202880393U CN202880393U CN 201220595864 CN201220595864U CN202880393U CN 202880393 U CN202880393 U CN 202880393U CN 201220595864 CN201220595864 CN 201220595864 CN 201220595864 U CN201220595864 U CN 201220595864U CN 202880393 U CN202880393 U CN 202880393U
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- scraper plate
- skewness
- speed
- scraper
- slag conveyor
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Abstract
The utility model discloses a slag conveyor scraper skewness measuring device, and belongs to the technical field of slag conveyor equipment for coal-fired units of power plants. The slag conveyor scraper skewness measuring device is used for measuring skewness of a slag conveyor scraper of a coal-fired unit. The technical scheme includes that the slag conveyor scraper skewness measuring device comprises a scraper detecting mechanism, a slag conveyor speed measuring mechanism and a PLC (programmable logic controller), the scraper detecting mechanism comprises two groups of driving levers, induction sheets and magnetic induction proximity switches, the two driving levers are positioned on two sides of the return stroke of the slag conveyor scraper respectively, the lower ends of the two driving levers are respectively opposite to the upper portion of the scraper, a rotation shaft is arranged in the middle of each driving lever, the upper ends of the two driving levers are connected with the induction sheets respectively, the two magnetic induction proximity switches are fixed to the outer sides of chains on two sides respectively, the two induction sheets are respectively opposite to the two magnetic induction proximity switches, and signal output ends of the magnetic induction proximity switches are connected with a signal input end of the PLC. The slag conveyor scraper skewness measuring device is simple in structure, stable and reliable in operation and capable of effectively detecting skewness of all scrapers of a slag conveyor and decreasing chain jamming caused by skewing of the scrapers and load limit caused by breakage.
Description
Technical field
The utility model relates to a kind of device of measuring coal-fired unit dragveyer scraper plate measure of skewness, belongs to power plant coal-fired unit dragveyer equipment technical field.
Background technology
Now large capacity high parameter thermoelectricity has been the main flow unit of coal-fired unit, and is also more and more higher to the requirement of the operation stability of unit and reliability.Coal-fired unit dragveyer is unique passage of unit deslagging, scraper chain conveyor is in operational process, often, chain wear inconsistent owing to both sides chain dilatability, the quantity of slag be large etc., and reason causes the scraper plate deflection, deflects into and to a certain degree can cause scraper plate to block, to such an extent as to break chain.The unit proof load that this because dragveyer fault causes even the situation of fire extinguishing occur repeatedly aborning, the smooth operation of producing has been produced some impact, if therefore can in time find dragveyer scraper plate deflection and early processing, it is very important avoiding chain to break and cause the accident.
The utility model content
Technical problem to be solved in the utility model provides a kind of dragveyer scraper plate measure of skewness measurement mechanism, this measurement mechanism can send warning automatically when the scraper plate measure of skewness exceeds setting value, prompting operation and plant maintenance personnel, arrange in advance preventive maintenance, avoid fault spread.
The technical scheme that solves the problems of the technologies described above is:
A kind of dragveyer scraper plate measure of skewness measurement mechanism, comprise scraper plate testing agency and PLC controller in its formation, scraper plate testing agency is by two groups of driving levers, sensing chip, the magnetic induction approach switch forms, two driving levers lay respectively at the both sides of chain, the lower end of two driving levers is relative with scraper plate top respectively, there is rotating shaft at the middle part of driving lever, two driving lever upper ends connect respectively sensing chip, two magnetic induction approach switchs are separately fixed at the outside of both sides chain, two sensing chips are relative with two magnetic induction approach switchs respectively, and the signal output part of two magnetic induction approach switchs is connected with the signal input part of PLC controller.
Above-mentioned dragveyer scraper plate measure of skewness measurement mechanism, two groups of driving levers, sensing chip, the magnetic induction approach switch of described scraper plate testing agency are installed in respectively on the same vertical cross-section in dragveyer scraper plate backhaul both sides; Scraper plate testing agency is flexible to be contacted with scraper plate top.
Above-mentioned dragveyer scraper plate measure of skewness measurement mechanism, it also has the dragveyer velocity measurement mechanisms, the dragveyer velocity measurement mechanisms is comprised of speed measuring fluted disc, the inductive probe that tests the speed, speed measuring fluted disc is above chain, the speed measuring fluted disc circumference has gear to be meshed with chain, be arranged with a plurality of windows that test the speed along even circumferential on the card of speed measuring fluted disc, the inductive probe that tests the speed is fixedly mounted on the outside of speed measuring fluted disc, the test the speed position of inductive probe is relative with the window that tests the speed, and the signal output part of the inductive probe that tests the speed is connected with the signal input part of PLC controller.
The beneficial effects of the utility model are:
The utility model can effectively detect the measure of skewness of all scraper plates of dragveyer, is convenient to grasp status of equipment, the generation of the proof load event that the chain bite that minimizing causes because of dragveyer scraper plate deflection, fracture cause.When producing more serious deflection, arrestment immediately, the unnecessary loss that can effectively protect the scraper plate chain rupture to cause.
The utility model can also intactly be recognized by continuous recording data curve the deflection of all scraper plates, be convenient to overhaul of the equipments man analysis dragveyer running trend of the equipment, in order to adopt rational maintenance scheme, determine quickly and accurately the position of more rational chain tension, replacing, can reduce labour intensity, reliability of operation be can improve, maintenance cost and time reduced.
The utility model is simple in structure, working stability is reliable, adopts the design of software and hardware combining, can carry out easily filtering and signal and accept or reject, and has guaranteed that the reliability measured improves a lot to safety and the economic benefit of unit.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is scraper plate of the present utility model testing agency structural representation;
Fig. 3 is dragveyer velocity measurement mechanisms structural representation of the present utility model.
Mark is as follows among the figure: scraper plate testing agency 1, dragveyer velocity measurement mechanisms 2, chain 3, scraper plate 4, magnetic induction approach switch 5, driving lever 6, sensing chip 7, rotating shaft 8, the inductive probe 9 that tests the speed, speed measuring fluted disc 10, tachometer disc tooth pitch 11, the window 12 that tests the speed, upper computer 13.
The specific embodiment
The utility model comprises scraper plate testing agency 1, dragveyer velocity measurement mechanisms 2 and PLC controller.
Show among the figure, scraper plate testing agency 1 is detected by 5 pairs of scraper plate 4 both sides of magnetic induction approach switch, signal is transported in the PLC controller, simultaneously dragveyer velocity measurement mechanisms 2 tests the speed to dragveyer by the inductive probe that tests the speed, also signal is transported in the PLC controller, the PLC controller can calculate the relative displacement of the both sides of scraper plate 4.When dragveyer scraper plate 4 side-play amounts surpassed alarming value, the PLC controller was uploaded alarm message, and the notice control cabin operations staff arouse attention; When dragveyer scraper plate 4 side-play amounts surpass trip value, automatically stop the scraper plate operation, protection equipment.
Show among the figure that scraper plate testing agency 1 is comprised of two groups of driving levers 6, sensing chip 7, magnetic induction approach switch 5.Two driving levers 6 lay respectively at the both sides of chain 3, the lower end of two driving levers 6 is relative with scraper plate 4 tops respectively, there is rotating shaft 8 at the middle part of driving lever 6, two driving lever 6 upper ends connect respectively sensing chip 7, two magnetic induction approach switchs 5 are separately fixed at the outside of both sides chain 3, two sensing chips 7 are relative with two magnetic induction approach switchs 5 respectively, and the signal output part of two magnetic induction approach switchs 5 is connected with the signal input part of PLC controller.
When scraper plate 4 travelled forward, the driving lever 6 that promotes scraper plate 4 both sides rotated around rotating shaft 8, and the sensing chip 7 of driving lever 6 upper ends moves, so that the magnetic induction approach switch 5 relative with sensing chip 7 produces electric signal, electric signal is sent in the PLC controller.
Show among the figure that dragveyer velocity measurement mechanisms 2 is comprised of speed measuring fluted disc 10, the inductive probe 9 that tests the speed.Speed measuring fluted disc 10 is above chain 3, speed measuring fluted disc 10 circumference have gear to be meshed with chain 3, be arranged with a plurality of windows 12 that test the speed along even circumferential on the card of speed measuring fluted disc 10, the inductive probe 9 that tests the speed is fixedly mounted on the outside of speed measuring fluted disc 10, the test the speed position of inductive probe 9 is relative with the window 12 that tests the speed, and the signal output part of the inductive probe 9 that tests the speed is connected with the signal input part of PLC controller.
When chain 3 rotated, with speed measuring fluted disc 10 rotations of chain 3 engagements, the inductive probe 9 that tests the speed produced electric signal by the window 12 that tests the speed, and electric signal is sent in the PLC controller, and the PLC controller is sent in the upper computer 13.
Behind the above-mentioned result of a measurement input PLC controller, carry out logical calculated in the PLC controller, this design accuracy and dragveyer running velocity are irrelevant.When the dragveyer scraper plate side-play amount that calculates surpassed alarming value, the PLC controller was uploaded alarm message, and the prompting control cabin operations staff note; When dragveyer scraper plate side-play amount surpasses trip value, automatically stop the scraper plate operation, protection equipment.
Claims (3)
1. dragveyer scraper plate measure of skewness measurement mechanism, it is characterized in that: comprise scraper plate testing agency (1) and PLC controller in its formation, scraper plate testing agency (1) is by two groups of driving levers (6), sensing chip (7), magnetic induction approach switch (5) forms, two driving levers (6) lay respectively at the both sides of chain (3), the lower end of two driving levers (6) is relative with scraper plate (4) top respectively, there is rotating shaft (8) at the middle part of driving lever (6), two driving levers (6) upper end connects respectively sensing chip (7), two magnetic induction approach switchs (5) are separately fixed at the outside of both sides chain (3), two sensing chips (7) are relative with two magnetic induction approach switchs (5) respectively, and the signal output part of two magnetic induction approach switchs (5) is connected with the signal input part of PLC controller.
2. dragveyer scraper plate measure of skewness measurement mechanism according to claim 1, it is characterized in that: two groups of driving levers (6) of described scraper plate testing agency (1), sensing chip (7), magnetic induction approach switch (5) are installed in respectively on the same vertical cross-section in dragveyer scraper plate backhaul both sides; Scraper plate testing agency (1) is flexible to be contacted with scraper plate (4) top.
3. dragveyer scraper plate measure of skewness measurement mechanism according to claim 1 and 2, it is characterized in that: it also has dragveyer velocity measurement mechanisms (2), dragveyer velocity measurement mechanisms (2) is by speed measuring fluted disc (10), the inductive probe (9) that tests the speed forms, speed measuring fluted disc (10) is in the top of chain (3), speed measuring fluted disc (10) circumference has gear to be meshed with chain (3), be arranged with a plurality of windows that test the speed (12) along even circumferential on the card of speed measuring fluted disc (10), the inductive probe (9) that tests the speed is fixedly mounted on the outside of speed measuring fluted disc (10), the test the speed position of inductive probe (9) is relative with the window that tests the speed (12), and the signal output part of the inductive probe that tests the speed (9) is connected with the signal input part of PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595864 CN202880393U (en) | 2012-11-13 | 2012-11-13 | Slag conveyor scraper skewness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595864 CN202880393U (en) | 2012-11-13 | 2012-11-13 | Slag conveyor scraper skewness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202880393U true CN202880393U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220595864 Expired - Fee Related CN202880393U (en) | 2012-11-13 | 2012-11-13 | Slag conveyor scraper skewness measuring device |
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| Country | Link |
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| CN (1) | CN202880393U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017036029A1 (en) * | 2015-09-06 | 2017-03-09 | 中国矿业大学 | Breakage detection system and method of chains of a scraper conveyor |
| CN109160225A (en) * | 2018-10-16 | 2019-01-08 | 江苏丰尚智能科技有限公司 | A kind of chain chain breakage protection device |
| CN109739167A (en) * | 2018-12-01 | 2019-05-10 | 大唐贵州发耳发电有限公司 | A kind of dragveyer scraper plate monitoring system and its monitoring method |
-
2012
- 2012-11-13 CN CN 201220595864 patent/CN202880393U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017036029A1 (en) * | 2015-09-06 | 2017-03-09 | 中国矿业大学 | Breakage detection system and method of chains of a scraper conveyor |
| US10207874B2 (en) | 2015-09-06 | 2019-02-19 | China University Of Mining And Technology | Breakage detection system and method of chains of a scraper conveyor |
| CN109160225A (en) * | 2018-10-16 | 2019-01-08 | 江苏丰尚智能科技有限公司 | A kind of chain chain breakage protection device |
| CN109739167A (en) * | 2018-12-01 | 2019-05-10 | 大唐贵州发耳发电有限公司 | A kind of dragveyer scraper plate monitoring system and its monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151113 |