CN202192104U - Electronic control system for water supply of hot rolling mill - Google Patents
Electronic control system for water supply of hot rolling mill Download PDFInfo
- Publication number
- CN202192104U CN202192104U CN2011202355325U CN201120235532U CN202192104U CN 202192104 U CN202192104 U CN 202192104U CN 2011202355325 U CN2011202355325 U CN 2011202355325U CN 201120235532 U CN201120235532 U CN 201120235532U CN 202192104 U CN202192104 U CN 202192104U
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- water
- valve
- rolling mill
- circulating pump
- control system
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Abstract
The utility model discloses an electronic control system for water supply of a hot rolling mill, which comprises a water pool, a water inlet pipeline and a cooling water inlet of the hot rolling mill, wherein the water inlet pipeline is communicated with the water pool. The water inlet pipeline is connected with a circulating pump controlled by a motor, the circulating pump is connected with a PLC (programmable logic controller), an input end of the PLC is connected with a water switch, an output end of the PLC is respectively connected with a main water supply valve and a bypass valve through a valve controller, the circulating pump is communicated with the cooling water inlet of the hot rolling mill through a water outlet pipeline, the main water supply valve is arranged in the water outlet pipeline, and the bypass valve is arranged in a pipeline communicating the water outlet pipeline with the water pool. The electronic control system has the following advantages that firstly, a great quantity of cooling water is delivered to the cooling water inlet of the hot rolling mill by the aid of the circulating pump under control of the electronic control system; and secondly, low-flow cooling water circulates between the pipeline and the water pool through the bypass valve by the aid of the circulating pump under control of the electronic control system when cooling is not required, and accordingly frequent starting of a motor is avoided while electric energy is saved.
Description
Technical field
The utility model relates to the hot-rolling mill technical field, particularly a kind of water supply electric-control system of hot-rolling mill.
Background technology
In the hot-rolling mill production process, need cooling water that discontinuity uses big flow to rolling high temperature band cool off.Existing water system is a kind of to be that pump is opened operation always, and cooling water continues to supply water; Another kind of water system is when needs cool off, to open water supplying pump, after cooling finishes, closes pump, in actual use, causes the excessive and heavy-duty motor frequent starting of energy consumption.These two kinds of water systems mainly contain following problem:
Because produced a coiled strip in the general 8-10 of hot-rolling mill minute, band just in the end a time need cooling, about 2 minutes of cool time, the about 600M of cooling water amount
3/ h, no matter whether power of motor 110KW in use, have band to need cooling, and pump is opened always, causes waste of electric energy.Stop pump if every cooling once reaches, when needs cool off, just open, so just cause the numerous startup of pumping frequency, cause water hammer effect impact pipeline and heavy-duty motor frequent starting that the impact of supply transformer and the life-span of motor itself are all produced very big influence.
The utility model content
The utility model technical problem to be solved is to the deficiency of prior art, to provide a kind of big capacity of hot-rolling mill of realizing to be interrupted the water supply electric-control system of the hot-rolling mill of water supply.
For solving the problems of the technologies described above; The technical scheme of the utility model is: a kind of water supply electric-control system of hot-rolling mill; Comprise pond, the inlet channel that is connected with the pond, hot-rolling mill cooling water intake; Described inlet channel is connected with circulating pump by Electric Machine Control, and described circulating pump is connected with the PLC controller through frequency converter, and the input of described PLC controller is connected with uses taps; The output of described PLC controller is connected with by-passing valve with main feed water valve respectively through valve positioner; Described circulating pump is connected with the hot-rolling mill cooling water intake through outlet conduit, and described main feed water valve even is arranged in the outlet conduit, and described by-passing valve is arranged in the pipeline that is communicated with outlet conduit and pond.
During described water switch opens, described PLC controller is controlled main feed water valve through valve positioner and is opened, and closes by-passing valve simultaneously, and improves pump-out through the Frequency Converter Control circulating pump.
Described when closing with taps, described PLC controller controls main feed water valve through valve positioner and cuts out, and opens by-passing valve simultaneously, and reduces pump-out through the Frequency Converter Control circulating pump.
The utility model adopts said structure, has the following advantages: 1, when hot-rolling mill needs big flow water that band is cooled off, open and use taps, system's control circulating pump is transported to the hot-rolling mill cooling water intake with a large amount of cooling waters; When 2, need not cool off, system's control circulating pump realizes that the low discharge cooling water circulates in pipeline and pond through by-passing valve, thereby avoids the frequent starting of motor, saves electric energy simultaneously.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation;
Fig. 1 is the structural representation of the utility model;
In Fig. 1,1, the pond; 2, inlet channel; 3, hot-rolling mill cooling water intake; 4, circulating pump; 5, frequency converter; 6, PLC controller; 7, use taps; 8, valve positioner; 9, main feed water valve; 10, by-passing valve; 11, outlet conduit.
The specific embodiment
The water supply electric-control system of a kind of hot-rolling mill as shown in Figure 1; The inlet channel 2 that comprise pond 1, is connected, hot-rolling mill cooling water intake 3 with the pond; Inlet channel 2 is connected with circulating pump 4 by Electric Machine Control, and circulating pump is connected with PLC controller 6 through frequency converter 5, and the input of PLC controller 6 is connected with taps 7; The output of PLC controller 6 is connected with by-passing valve 10 with main feed water valve 9 respectively through valve positioner 8; Circulating pump 4 is connected with hot-rolling mill cooling water intake 3 through outlet conduit 11, and main feed water valve even is arranged in the outlet conduit, and by-passing valve is arranged in the pipeline that is communicated with outlet conduit and pond.PLC adopts the PLC of S7-200 model.Frequency converter adopts the water pump special converter.
During the water switch opens, PLC controller 6 is opened through the main feed water valve of valve positioner 8 controls, closes by-passing valve simultaneously, and improves pump-out through the Frequency Converter Control circulating pump.When closing with taps, PLC controller 6 cuts out through the main feed water valve of valve positioner 8 controls, opens by-passing valve simultaneously, and reduces pump-out through frequency converter 5 control circulating pumps 4.
When hot-rolling mill needs water, open with taps 7, send the water signal and give PLC controller 6; After PLC controller 6 receives signal,, valve positioner 8 is sent signal through handling; Valve positioner 8 is opened main feed water valve 9, and the signal that valve is reached the position feeds back to PLC controller 6 through valve positioner 8, sends the by-passing valve shutdown signal after PLC controller 6 is handled and gives valve positioner 8; Valve positioner 8 is closed by-passing valve 10, after by-passing valve 10 cuts out, valve is closed the signal that puts in place feed back to PLC controller 6 through valve positioner 8; After PLC controller 6 is handled; Send full frequency water supply signal and give frequency converter 5, frequency converter 5 full operations frequently drive circulating pump motor, begin big flow and supply water to hot-rolling mill cooling water intake 3.
When hot-rolling mill does not need water, close with taps 7, send the signal of cutting off the water and give PLC controller 6; After PLC controller 6 receives signal,, valve positioner 8 is sent signal through handling; Valve positioner 8 closes opens by-passing valve 10, and the signal that valve is reached the position feeds back to PLC controller 6 through valve positioner 8, sends main feed water valve shutdown signal after PLC controller 6 is handled and gives valve positioner 8; Valve positioner 8 is closed main feed water valve 6, after main feed water valve 6 is closed, valve is closed the signal that puts in place feed back to PLC controller 6 through valve positioner 8; After PLC controller 6 is handled, send low frequency water supply signal and give frequency converter 5, low-frequency operation drives circulating pump motor; Beginning low discharge bypass is circulated to the pond, waits for next water signal.Native system is avoided the frequent starting of motor, saves electric energy simultaneously.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted method design of the utility model and the various improvement that technical scheme is carried out; Or directly apply to other occasion without improvement, all within the protection domain of the utility model.
Claims (3)
1. the water supply electric-control system of a hot-rolling mill; The inlet channel (2) that comprise pond (1), is connected, hot-rolling mill cooling water intake (3) with the pond; It is characterized in that: described inlet channel (2) is connected with circulating pump (4) by Electric Machine Control; Described circulating pump is connected with PLC controller (6) through frequency converter (5); The input of described PLC controller (6) is connected with taps (7), and the output of described PLC controller (6) is connected with by-passing valve (10) with main feed water valve (9) respectively through valve positioner (8), and described circulating pump (4) is connected with hot-rolling mill cooling water intake (3) through outlet conduit (11); Described main feed water valve even is arranged in the outlet conduit, and described by-passing valve is arranged in the pipeline that is communicated with outlet conduit and pond.
2. the water supply electric-control system of a kind of hot-rolling mill according to claim 1; It is characterized in that: during described water switch opens; Described PLC controller (6) is opened through the main feed water valve of valve positioner (8) control; Close by-passing valve simultaneously, and improve pump-out through the Frequency Converter Control circulating pump.
3. the water supply electric-control system of a kind of hot-rolling mill according to claim 1; It is characterized in that: described when closing with taps; Described PLC controller (6) cuts out through the main feed water valve of valve positioner (8) control; Open by-passing valve simultaneously, and reduce pump-out through frequency converter (5) control circulating pump (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202355325U CN202192104U (en) | 2011-07-06 | 2011-07-06 | Electronic control system for water supply of hot rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202355325U CN202192104U (en) | 2011-07-06 | 2011-07-06 | Electronic control system for water supply of hot rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202192104U true CN202192104U (en) | 2012-04-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202355325U Expired - Fee Related CN202192104U (en) | 2011-07-06 | 2011-07-06 | Electronic control system for water supply of hot rolling mill |
Country Status (1)
| Country | Link |
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| CN (1) | CN202192104U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2541480C1 (en) * | 2014-02-24 | 2015-02-20 | Александр Алексеевич Соловьев | Cooling method of circulating water in cooling water pond |
| CN104768667A (en) * | 2012-09-03 | 2015-07-08 | 西马克·西马格公司 | Method and device for dynamically supplying coolant to a cooling device for cooling metal strip or other rolled stock |
| CN104971947A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Method for controlling liquid level of laminar flow water tank |
| CN110049830A (en) * | 2016-12-14 | 2019-07-23 | 首要金属科技奥地利有限责任公司 | Cooling equipment for cold rolling part |
| CN114130832A (en) * | 2021-10-29 | 2022-03-04 | 张家港荣盛特钢有限公司 | Method and device for controlling water shortage of cooling water and computer readable storage medium |
-
2011
- 2011-07-06 CN CN2011202355325U patent/CN202192104U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104768667A (en) * | 2012-09-03 | 2015-07-08 | 西马克·西马格公司 | Method and device for dynamically supplying coolant to a cooling device for cooling metal strip or other rolled stock |
| CN110788147A (en) * | 2012-09-03 | 2020-02-14 | Sms集团有限公司 | Device for dynamically supplying a cooling medium to a cooling device for cooling metal strips or other rolling stock |
| CN110788147B (en) * | 2012-09-03 | 2021-12-28 | Sms集团有限公司 | Device for dynamically supplying a cooling medium to a cooling device for cooling metal strips or other rolling stock |
| RU2541480C1 (en) * | 2014-02-24 | 2015-02-20 | Александр Алексеевич Соловьев | Cooling method of circulating water in cooling water pond |
| CN104971947A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Method for controlling liquid level of laminar flow water tank |
| CN110049830A (en) * | 2016-12-14 | 2019-07-23 | 首要金属科技奥地利有限责任公司 | Cooling equipment for cold rolling part |
| EP3554727B1 (en) | 2016-12-14 | 2020-12-30 | Primetals Technologies Austria GmbH | Cooling system for cooling rolling stock |
| US11103906B2 (en) | 2016-12-14 | 2021-08-31 | Primetals Technologies Austria GmbH | Cooling system for cooling metal rolling stock |
| CN114130832A (en) * | 2021-10-29 | 2022-03-04 | 张家港荣盛特钢有限公司 | Method and device for controlling water shortage of cooling water and computer readable storage medium |
| CN114130832B (en) * | 2021-10-29 | 2023-11-03 | 张家港荣盛特钢有限公司 | Method and device for controlling cooling water shortage and computer readable storage medium |
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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: 20120418 Termination date: 20160706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |