CN107118784B - Control system of electric cylinder of dry quenching loading device - Google Patents
Control system of electric cylinder of dry quenching loading device Download PDFInfo
- Publication number
- CN107118784B CN107118784B CN201710339987.3A CN201710339987A CN107118784B CN 107118784 B CN107118784 B CN 107118784B CN 201710339987 A CN201710339987 A CN 201710339987A CN 107118784 B CN107118784 B CN 107118784B
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- China
- Prior art keywords
- electric cylinder
- limiting
- dry quenching
- limit
- limiting device
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- 238000010791 quenching Methods 0.000 title claims abstract description 32
- 230000000171 quenching effect Effects 0.000 title claims abstract description 32
- 239000000571 coke Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The control system comprises an electric cylinder controller, an external limiting device, a terminal control box and an internal limiting device arranged in the electric cylinder, wherein the control signal output end of the electric cylinder controller is connected with the electric cylinder of the dry quenching loading device; the switch signals output by the external limiting device and the internal limiting device are connected with the limiting signal input end of the electric cylinder controller through different safety terminals in the terminal control box. According to the invention, the external limiting device is additionally arranged on the basis of the traditional electric cylinder control system, when the internal limiting device fails, the connection between the internal limiting device and the electric cylinder controller is switched into the connection between the external limiting device and the electric cylinder controller through the terminal control box, so that the electric cylinder can still act according to a normal program, and the normal operation of the dry quenching furnace is ensured.
Description
Technical Field
The invention relates to a device for controlling an electric cylinder of a dry quenching loading device, which can effectively prevent shutdown accidents caused by limit faults in the electric cylinder and ensure the normal operation of a dry quenching furnace, and belongs to the technical field of coke production equipment.
Background
The dry quenching loading device is positioned at the top of the dry quenching furnace, and is matched with the lifting machine to load the red coke in the coke tank into the dry quenching furnace, thereby being important equipment in the dry quenching production. When the coke dry quenching furnace normally loads coke, the electric cylinder receives a lifting machine instruction and then pulls the trolley and the furnace cover and the hopper arranged on the trolley to walk along the track through the driving device, the furnace cover is opened, the coke tank and the hopper are aligned to the coke dry quenching furnace mouth, and the coke tank is used for dry quenching the red Jiao Fangjin in the coke dry quenching furnace through the hopper; after the coke is filled, the lifting machine removes the coke tank and sends out an automatic instruction, and the electric cylinder drives the traction trolley to remove the hopper and closes the furnace cover. The transmission of the electric cylinder is controlled by a frequency converter, and the whole action process is controlled by four built-in limit switches of the electric cylinder: namely, a closing limit switch, a pre-opening limit switch and an opening limit switch. Acceleration and deceleration and action stop control are performed through four limit switches. The four limit switches are cam rotary switches arranged in the electric cylinder and meshed with the motor main shaft through a bevel gear, and when the motor rotates, the rotary switches are driven to rotate through the bevel gear, so that contact closure in four states is sequentially realized. The long-term fast-paced operation of the electric cylinder causes serious abrasion of the bevel gear, causes frequent occurrence of faults such as position-limiting offset or poor contact of the contact, causes the electric cylinder to be unable to act according to a normal program, further causes the phenomena of unable normal coke loading of the elevator, even burning loss of the coke pot, and the like, and brings great economic loss to enterprises.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a control system of an electric cylinder of a dry quenching charging device, so as to ensure that the electric cylinder acts according to a normal program and ensure that a dry quenching furnace is charged with coke smoothly.
The invention is realized by the following technical scheme:
the control system of the electric cylinder of the dry quenching loading device comprises an electric cylinder controller, an external limiting device, a terminal control box and an internal limiting device arranged in the electric cylinder, wherein the control signal output end of the electric cylinder controller is connected with the electric cylinder of the dry quenching loading device; the switch signals output by the external limiting device and the internal limiting device are connected with the limiting signal input end of the electric cylinder controller through different safety terminals in the terminal control box.
According to the control system of the electric cylinder of the dry quenching loading device, the external limiting device comprises the trigger plate and four limiting sensors, the trigger plate is fixed on the trolley of the dry quenching loading device through the trigger plate support, the four limiting sensors are respectively a closing limiting sensor, a pre-opening limiting sensor and an opening limiting sensor, the four limiting sensors are fixed on the dry quenching furnace through the support and are sequentially arranged along the travelling track of the trigger plate, and the signal output end of each limiting sensor is connected with one limiting signal input end of the electric cylinder controller through one safety terminal in the terminal control box.
According to the control system of the electric cylinder of the dry quenching loading device, four limit switches are arranged in the built-in limit device, and are respectively a closing limit switch, a pre-opening limit switch and an opening limit switch, and the switch signal output end of each limit switch is connected with one limit signal input end of the electric cylinder controller through one safety terminal in the terminal control box.
According to the control system of the electric cylinder of the dry quenching loading device, the limit sensor is a U-shaped proximity switch.
The control system of the electric cylinder of the dry quenching loading device is characterized in that the electric cylinder controller is a PLC.
According to the invention, the external limiting device is additionally arranged on the basis of the traditional electric cylinder control system, when the internal limiting device fails, the connection between the internal limiting device and the electric cylinder controller is switched into the connection between the external limiting device and the electric cylinder controller through the terminal control box, so that the electric cylinder can still act according to a normal program, and the normal operation of the dry quenching furnace is ensured.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a conventional electric cylinder control system;
FIG. 2 is a schematic diagram of the control system of the electric cylinder of the present invention;
FIG. 3 is a schematic structural view of an external limiting device;
fig. 4 is an electrical schematic of the present invention.
The reference numerals in the figures are: 1. the electric cylinder comprises an electric cylinder body, 2, an internal limiting device, 3, an electric cylinder controller, 4, an external limiting device, 5, a terminal control box, 6, an opening sensor support, 7, guan Chuan sensor support, 8, a trigger plate, 9, a trigger plate support, S1 and Guan Xianwei switches, S2, a pre-closing limiting switch, S3, a pre-opening limiting switch, S4, an opening limiting switch, S5 and Guan Xianwei sensors, S6, a pre-closing limiting sensor, S7, a pre-opening limiting sensor and S8, an opening limiting sensor.
Detailed Description
The invention provides an improved control system of an electric cylinder of a dry quenching loading device, which can prevent accidents such as incapability of normally loading coke and even burning of a coke tank caused by incapability of operating the electric cylinder according to a normal program when a built-in limit switch of the electric cylinder fails. The invention adds the external limiting device 4 and the terminal control box 5 on the basis of the original electric cylinder control system, and the safety terminal is arranged in the terminal control box 5 to realize the switching of the internal limiting device and the external limiting device. In the normal production process, once the limit fault of the built-in cam of the electric cylinder occurs, the built-in limit device can be rapidly cut off through operation, the external limit device is put into the process, and the normal operation of the loading device is ensured to the greatest extent.
Referring to fig. 1, the invention mainly comprises an internal limiting device 2, an electric cylinder controller 3, an external limiting device 4 and a terminal control box 5, wherein a closing limiting switch S1, a pre-closing limiting switch S2, a pre-opening limiting switch S3 and an opening limiting switch S4 are arranged in the internal limiting device 2, and the external limiting device 4 comprises a closing limiting sensor S5, a pre-closing limiting sensor S6, a pre-opening limiting sensor S7, an opening limiting sensor S8, an opening sensor bracket 6, a Guan Chuan sensor bracket 7, a trigger plate 8 and a trigger plate support 9.
The manufacturing method comprises the following steps: manufacturing a closing sensor bracket 7 and an opening sensor bracket 6 by using 8# channel steel and 50 multiplied by 5 angle steel, and mounting a closing limit sensor S5 and a pre-closing limit sensor S6 on the closing sensor bracket 7; the opening sensor bracket 6 is provided with a pre-opening limit sensor S7, an opening limit sensor S8 and Guan Xianwei, wherein the functions of the pre-opening limit sensor S6, the pre-opening limit sensor S7 and the opening limit sensor S8 are respectively off limit, pre-opening limit and opening limit, and correspond to the functions of the off limit switch S1, the pre-off limit switch S2, the pre-opening limit switch S3 and the opening limit switch S4 in the built-in limit device 2. Guan Xianwei sensor S5, limit sensor S6, limit sensor S7 and limit sensor S8 are all U type proximity switches. The trigger plate 8 is an induction part of a proximity switch, is made of a cold-rolled plate with the thickness of 2mm, is rectangular with the length of 250mm and the width of 150mm, and is fixed on the trigger plate support 9 by using M6 multiplied by 20 bolts. The trigger plate support 9 is an angle steel with the length of 250mm and the length of 40 multiplied by 4. The sensor closing bracket 7 and the sensor opening bracket 6 are respectively arranged at the closing position of the furnace cover and the centering position of the hopper; the trigger plate 8 is adjusted to be inserted into the U-shaped proximity switch at 1/2 position and keep the centering degree, and after the trigger plate 8 is adjusted, the trigger plate support 9 is arranged on the edge of the trolley. A terminal control box 5 is arranged near an electric cylinder built-in limiting device 2, four output ends of four limiting switches in the built-in limiting device 2 and a common end are led into the terminal control box 5 through control cables and are respectively connected with upper ports of five safety terminals, wherein the common end is a power terminal and should be connected with a +24VDC power supply; the four limit sensors of the external limit device 4 are also led into the terminal control box 5 through the control cable and are connected into the upper ports of the other five safety terminals, a 1A safety tube is arranged in each safety terminal, and during normal production, the five safety terminals of the internal limit device 2 are put into, the five safety terminals of the external limit device 4 are disconnected, and the internal rotation limit is effective; when the internal rotation limit fails, the five safety terminals of the internal limiting device 2 are disconnected, the five safety terminals of the external limiting device 4 are put into operation, and the external proximity switch acts. When the electric cylinder acts, no matter four limit switches of the built-in limit device 2 or four limit sensors of the external limit device 4 are put into, signals can be led into a PLC program during limit action to control acceleration and deceleration and start and stop of the electric cylinder, and four action positions of pre-opening, opening in place, pre-closing and closing in place are guaranteed to accurately correspond to the actual trolley position. The external proximity switch adopts a double-plus SJ30 type U-shaped proximity switch, so that the installation is convenient and the overhaul is quick. And the trigger plate 8 passes through the center of the U-shaped proximity switch optimally, and the induction is the most sensitive.
Claims (3)
1. The control system of the electric cylinder of the dry quenching loading device is characterized by comprising an electric cylinder controller (3), an external limiting device (4), a terminal control box (5) and an internal limiting device (2) arranged in the electric cylinder (1), wherein the control signal output end of the electric cylinder controller (3) is connected with the electric cylinder (1) of the dry quenching loading device; the switch signals output by the external limiting device (4) and the internal limiting device (2) are connected with the limiting signal input end of the electric cylinder controller (3) through different safety terminals in the terminal control box (5);
the external limiting device (4) comprises a trigger plate (8) and four limiting sensors, the trigger plate (8) is fixed on a trolley of the dry quenching loading device through a trigger plate support (9), the four limiting sensors are respectively a closing limiting sensor (S5), a pre-closing limiting sensor (S6), a pre-opening limiting sensor (S7) and an opening limiting sensor (S8), and the four limiting sensors are fixed on the dry quenching furnace through a bracket and are sequentially arranged along the travelling track of the trigger plate (8), and the signal output end of each limiting sensor is connected with one limiting signal input end of the electric cylinder controller (3) through one safety terminal in the terminal control box (5);
four limit switches are arranged in the built-in limit device (2), and are respectively a closing limit switch (S1), a pre-closing limit switch (S2), a pre-opening limit switch (S3) and an opening limit switch (S4), and the switch signal output end of each limit switch is connected with one limit signal input end of the electric cylinder controller (3) through one safety terminal in the terminal control box (5).
2. The control system of an electric cylinder of a dry quenching loading device according to claim 1, wherein the limit sensor is a U-shaped proximity switch.
3. The control system of an electric cylinder of a dry quenching loading device according to claim 2, wherein the electric cylinder controller (3) is a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710339987.3A CN107118784B (en) | 2017-05-15 | 2017-05-15 | Control system of electric cylinder of dry quenching loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710339987.3A CN107118784B (en) | 2017-05-15 | 2017-05-15 | Control system of electric cylinder of dry quenching loading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107118784A CN107118784A (en) | 2017-09-01 |
| CN107118784B true CN107118784B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710339987.3A Active CN107118784B (en) | 2017-05-15 | 2017-05-15 | Control system of electric cylinder of dry quenching loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107118784B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285797A (en) * | 2018-03-22 | 2018-07-17 | 临涣焦化股份有限公司 | A kind of red burnt loading system of dry coke quenching |
| CN110205144B (en) * | 2019-05-28 | 2024-06-28 | 唐钢美锦（唐山）煤化工有限公司 | Detection device of dry quenching loading device |
| CN113088300A (en) * | 2021-03-08 | 2021-07-09 | 广东韶钢松山股份有限公司 | Falling safety detection device for cooling tower of dry quenching hoister and use method |
| CN113311501A (en) * | 2021-06-29 | 2021-08-27 | 攀钢集团西昌钢钒有限公司 | Furnace cover opening and closing in-place detection system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2222420A1 (en) * | 1973-03-19 | 1974-10-18 | Koppers Co Inc | |
| CN201540474U (en) * | 2009-09-22 | 2010-08-04 | 鞍钢股份有限公司 | Transmission control system of dry quenching loading device |
| CN206814695U (en) * | 2017-05-15 | 2017-12-29 | 宣化钢铁集团有限责任公司 | A kind of control system of coke dry-quenching loading device electric cylinder |
-
2017
- 2017-05-15 CN CN201710339987.3A patent/CN107118784B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2222420A1 (en) * | 1973-03-19 | 1974-10-18 | Koppers Co Inc | |
| CN201540474U (en) * | 2009-09-22 | 2010-08-04 | 鞍钢股份有限公司 | Transmission control system of dry quenching loading device |
| CN206814695U (en) * | 2017-05-15 | 2017-12-29 | 宣化钢铁集团有限责任公司 | A kind of control system of coke dry-quenching loading device electric cylinder |
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| Publication number | Publication date |
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| CN107118784A (en) | 2017-09-01 |
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