CN102816884A - Hot-blast stove cold air stop-valve close valve interlocking and unlocking methods - Google Patents
Hot-blast stove cold air stop-valve close valve interlocking and unlocking methods Download PDFInfo
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- CN102816884A CN102816884A CN2012102857886A CN201210285788A CN102816884A CN 102816884 A CN102816884 A CN 102816884A CN 2012102857886 A CN2012102857886 A CN 2012102857886A CN 201210285788 A CN201210285788 A CN 201210285788A CN 102816884 A CN102816884 A CN 102816884A
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Abstract
The invention relates to hot-blast stove cold air stop-valve close valve interlocking and unlocking methods, and belongs to the technical field of metallurgy hot-blast stove cold air valve controlling. According to interlocking control, additional relays are added at a controlling cabinet; with the interlocking and linkage controls among the relays, interlocking and linkage controls of the cold air valves are realized. A signal line of an in-place status of a valve of a hot-blast stove cold air valve is connected in series with the coils of the added relays, such that coil electricity gains of the relays are controlled. Controlling lines of close valve commands of the cold air valves of other hot-blast stoves are connected in series with the open points of the added relays. Therefore, only when the cold air valve of at least one hot-blast stove is in a completely open state, the other hot-blast stove cold air valves can perform close valve operations of the cold air valves. The unlocking controlling method is realized with the added relays. The coil electricity gain statuses of the added relays are provided with an unlocking controlling command. When the unlocking command is outputted, the interlocking-controlled relays fail, such that an unlocking requirement is realized. The methods have advantages that accidents such as blast furnace blower pressure-out, blast furnace instant wind-off, and tuyere slag-filling are avoided.
Description
Technical field
The invention belongs to metallurgical industry hotblast stove cold blast valve control techniques field, particularly provide a kind of hotblast stove cold wind trip valve to close valve interlocking, unlock method.
Background technology
For the metallurgy industry, hotblast stove has important role in metallurgy ironmaking industry, has guaranteed the burning of crude fuel in blast furnace air quantity, the stove.At present, domestic many iron and steel enterprises (especially large-scale iron and steel enterprise) all adopt many hotblast stove parallel connection air supply modes, during the ordinary production of blast furnace, need a hotblast stove at ventilation state at least, guarantee the air quantity of blast furnace.This carries out the rigid line interlocking with regard to the cold blast valve that needs many hotblast stoves; The cold blast valve that guarantees at least one hotblast stove always at open mode, hotblast stove at ventilation state; Avoid occurring the cold blast valve Close All that breaks down, hotblast stove, blast furnace are caused great industrial accident.Simultaneously, the existence of interlocking needs a kind of effective lock means of separating, and can separate lock control fast.When the blast furnace maintenance blowing-out, the hotblast stove cold blast valve can carry out the Close All operation.The technology of introducing below will address this problem.
Summary of the invention
The purpose of this invention is to provide a kind of hotblast stove cold wind trip valve and close valve interlocking, unlock method; Interlocking between many hotblast stove cold blast valves, release have been realized; Avoid during the blast furnace normal operation; The great industrial accident that the cold blast valve Close All causes that the blast furnace blowing engine blower fan builds the pressure, blast furnace disconnected wind of moment, air port are irritated slag takes place, and guarantees that intact, the blast furnace of hot-blast furnace equipment produced along steady.Simply, fast, has very high Practical significance.
Interlocking control of the present invention is through at the newly-increased rly. of housing, realizes the interlocking of cold blast valve, chain control through the interlocking between the rly., chain control; Wherein, The valve of a hotblast stove cold blast valve reach a state SW and newly-increased rly. coil tandem together; It is electric to come the coil of relay to get, and the wire of the pass valve order of the cold blast valve of other hotblast stove was connected in series with the battle on the newly-increased rly., guaranteed that at least one hotblast stove cold blast valve is when full-gear; Other hotblast stove cold blast valve can carry out the pass valve operation of cold blast valve, has guaranteed that at least one hotblast stove is at ventilation state; The release mode is to adopt newly-increased rly. to realize; The electricity condition that gets of newly-increased relay1 coil provides through the release control command; Rly. with the pass valve order wire of battle and the cold blast valve of a hotblast stove parallelly connected; After unlock command output, the rly. of interlocking control is promptly ineffective, has realized the release requirement.
The realization of interlocking mode: (with all the people present's hotblast stove is example, and other principle is identical)
Newly-increased five rly.s are respectively: K1, K2, K3, K4, K5.Coil the first terminal 13, the second terminals 14 of K1 rly. are connected in series a signal that reaches of 1# hotblast stove cold wind trip valves; Coil the first terminal 13, the second terminals 14 of K2 rly. are connected in series a signal that reaches of 2# hotblast stove cold wind trip valves; Coil the first terminal 13, the second terminals 14 of K3 rly. are connected in series a signal that reaches of 3# hotblast stove cold wind trip valves; Coil the first terminal 13, the second terminals 14 of K4 rly. are connected in series a signal that reaches of 4# hotblast stove cold wind trip valves; The K1 rly. be with second battle terminal 6; The 6th battle terminal 10 serial connection 2# hotblast stove cold wind trip valves shutdown command, the K1 rly. be with the 3rd battle terminal 7, the minion point terminals 11 be connected in series the shutdown command of 3# hotblast stove cold wind trip valves; The K1 rly. be with the 4th battle terminal 8; The shutdown command of octavo point terminal 12 serial connection 4# hotblast stove cold wind trip valves, K2 rly. be with first battle terminal terminal 5, the five battle 9 be connected in series the shutdown command of 1# hotblast stove cold wind trip valves.
The realization of release mode: (with all the people present's hotblast stove is example, and other principle is identical)
Coil the first terminal 13, the second terminals 14 serial connection unlock command of newly-increased relay K 5; The 9 serial connection 1# hotblast stove cold wind trip valve shutdown commands (with terminal 5,9 parallel connections of K2 rly.) of rly. terminal first battle terminal 5, the five battle; The 10 serial connection 2# hotblast stove cold wind trip valve shutdown commands (with terminal 6,10 parallel connections of K1 rly.) of rly. terminal second battle terminal 6, the six battle; The 11 serial connection 3# hotblast stove cold wind trip valve shutdown commands (with terminal 7,11 parallel connections of K1 rly.) of rly. terminal the 3rd battle 7, the minion point terminals; The 12 serial connection 4# hotblast stove cold wind trip valve shutdown commands (with terminal 8,12 parallel connections of K1 rly.) of rly. terminal the 4th battle 8, the octavo point terminals.
Of the present inventionly be a little, can avoid blast furnace because of hotblast stove cold wind trip valve Close All causes that the blast furnace blowing engine blower fan builds the pressure, blast furnace disconnected wind of moment, air port are irritated the great industrial accident of slag generation.Through using a plurality of rly.s interrelatedly to accomplish, separating lock control to the interlocking between a plurality of cold wind trip valves of hotblast stove; Guarantee that hotblast stove exists a hotblast stove cold wind trip valve in open mode at least, has satisfied the demand of removing this interlocking under given conditions simultaneously in normal blast furnace production.
Description of drawings
Fig. 1 is the wiring schematic diagram between the K1 rly..
Fig. 2 is the wiring schematic diagram between the K2 rly..
Fig. 3 is the wiring schematic diagram between the K3 rly..
Fig. 4 is the wiring schematic diagram between the K4 rly..
Fig. 5 is the wiring schematic diagram between the K5 rly..
Among the figure: the first close point terminal 1, the second close point terminal 2, the 3rd close point terminal 3, the 4th close point terminal 4, first battle terminal 5, second battle terminal 6, the 3rd battle terminal 7, the 4th battle terminal 8, the 5th battle terminal 9, the 6th battle terminal 10, minion point terminal 11, octavo point terminal 12, the first terminal 13, the second terminals 14
Embodiment
Be example with all the people present's hotblast stove below, illustrating this patent of invention is how to realize realizing interlocking mode reconciliation lock control mode through rly.:
The realization of 1, interlocking mode: newly-increased five relay K 1, K2, K3, K4, K5.The coil of K1 rly. (terminal 13, terminal 14) is connected in series a signal that reaches of 1# hotblast stove cold wind trip valve; The coil of K2 rly. (terminal 13, terminal 14) is connected in series a signal that reaches of 2# hotblast stove cold wind trip valve; The coil of K3 rly. (terminal 13, terminal 14) is connected in series a signal that reaches of 3# hotblast stove cold wind trip valve; The coil of K4 rly. (terminal 13, terminal 14) is connected in series a signal that reaches of 4# hotblast stove cold wind trip valve; The K1 rly. is with battle (terminal 6; Terminal 10) shutdown command of (terminal 7, terminal 11) serial connection 3# hotblast stove cold wind trip valve is with battle in the shutdown command of serial connection 2# hotblast stove cold wind trip valve, K1 rly.; The K1 rly. is with battle (terminal 8; Terminal 12) shutdown command of (terminal 5, terminal 9) serial connection 1# hotblast stove cold wind trip valve is with battle in the shutdown command of serial connection 4# hotblast stove cold wind trip valve, K2 rly.; K1, K2, K3, the mode of connection between the K4 rly. is shown in Fig. 1 in the Figure of description～4:
2. the realization of release mode: (with all the people present's hotblast stove is example, and other principle is identical) K5 relay1 coil (terminal 13, terminal 14) serial connection unlock command; Serial connection 1# hotblast stove cold wind trip valve shutdown command (with the terminal 5 of K2 rly., terminal 9 parallel connections) K5 rly. battle (terminal 5, terminal 9); Serial connection 2# hotblast stove cold wind trip valve shutdown command (with the terminal 6 of K1 rly., terminal 10 parallel connections) K5 rly. battle (terminal 6, terminal 10); Serial connection 3# hotblast stove cold wind trip valve shutdown command (with the terminal 7 of K1 rly., terminal 11 parallel connections) K5 rly. battle (terminal 7, terminal 11); Serial connection 4# hotblast stove cold wind trip valve shutdown command (with the terminal 8 of K1 rly., terminal 12 parallel connections) K5 rly. battle (terminal 8, terminal 12); Shown in Figure 5 in K5 relay wiring mode such as the Figure of description.
Claims (3)
1. a hotblast stove cold wind trip valve closes valve interlocking, unlock method, it is characterized in that:
Interlocking control is through at the newly-increased rly. of housing, realizes the interlocking of cold blast valve, chain control through the interlocking between the rly., chain control; Wherein, The valve of a hotblast stove cold blast valve reach a state SW and newly-increased rly. coil tandem together; It is electric to come the coil of relay to get, and the wire of the pass valve order of the cold blast valve of other hotblast stove was connected in series with the battle on the newly-increased rly., guaranteed that at least one hotblast stove cold blast valve is when full-gear; Other hotblast stove cold blast valve can carry out the pass valve operation of cold blast valve, has guaranteed that at least one hotblast stove is at ventilation state;
The release mode is to adopt newly-increased rly. to realize; The electricity condition that gets of newly-increased relay1 coil provides through the release control command; Rly. with the pass valve order wire of battle and the cold blast valve of a hotblast stove parallelly connected; After unlock command output, the rly. of interlocking control is promptly ineffective, has realized the release requirement.
2. method according to claim 1 is characterized in that, described interlocking mode is following:
Newly-increased five rly.s, the coil the first terminal (13) of K1 rly., second terminal (14) are connected in series a SW that reaches of 1# hotblast stove cold wind trip valve; The coil the first terminal (13) of K2 rly., (140 are connected in series a SW that reaches of 2# hotblast stove cold wind trip valves to second terminal; The coil the first terminal (13) of K3 rly., second terminal (14) are connected in series a SW that reaches of 3# hotblast stove cold wind trip valve; The coil the first terminal (13) of K4 rly., second terminal (14) are connected in series a SW that reaches of 4# hotblast stove cold wind trip valve; The K1 rly. is with second terminal battle (6); The shutdown command wire of the 6th terminal battle (10) serial connection 2# hotblast stove cold wind trip valve; The K1 rly. is with the 3rd terminal battle (7); The shutdown command wire of minion point terminal (11) serial connection 3# hotblast stove cold wind trip valve, the K1 rly. is with the 4th terminal battle (8), the shutdown command wire of octavo point terminal (12) serial connection 4# hotblast stove cold wind trip valve; The K2 rly. is with first terminal battle (5), the shutdown command wire of the 5th terminal battle (9) serial connection 1# hotblast stove cold wind trip valve.
3. method according to claim 1 is characterized in that, described release mode is following:
The coil the first terminal (13) of newly-increased relay K 5, second terminal (14) serial connection unlock command; Rly. terminal first battle (5), the shutdown command of the 5th terminal battle (9) serial connection 1# hotblast stove cold wind trip valve, first terminal battle (5) of shutdown command and K2 rly., the 5th terminal battle (9) parallel connection; Rly. terminal second battle (6), the shutdown command of the 6th terminal battle (10) serial connection 2# hotblast stove cold wind trip valve, second terminal battle (6) of shutdown command and K1 rly., the 6th terminal battle (10) parallel connection; Rly. terminal the 3rd battle (7), the shutdown command of minion point terminal (11) serial connection 3# hotblast stove cold wind trip valve, the 3rd terminal battle (7) of shutdown command and K1 rly., minion point terminal (11) parallel connection; Rly. terminal the 4th battle (8), the shutdown command of octavo point terminal (12) serial connection 4# hotblast stove cold wind trip valve, the 4th terminal battle (8) of shutdown command and K1 rly., octavo point terminal (12) parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210285788 CN102816884B (en) | 2012-08-10 | 2012-08-10 | Hot-blast stove cold air stop-valve close valve interlocking and unlocking methods |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210285788 CN102816884B (en) | 2012-08-10 | 2012-08-10 | Hot-blast stove cold air stop-valve close valve interlocking and unlocking methods |
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| CN102816884A true CN102816884A (en) | 2012-12-12 |
| CN102816884B CN102816884B (en) | 2013-09-04 |
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| CN 201210285788 Active CN102816884B (en) | 2012-08-10 | 2012-08-10 | Hot-blast stove cold air stop-valve close valve interlocking and unlocking methods |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112029941A (en) * | 2020-08-13 | 2020-12-04 | 北京首钢自动化信息技术有限公司 | Cold air valve closing valve control circuit and hot blast stove control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104443A (en) * | 1985-06-13 | 1986-02-10 | 冶金工业部包头钢铁设计研究院 | The control of Control of hot-blast of alter-parallel blasting from stove of blast furnace temperature |
| US20110170377A1 (en) * | 2010-01-12 | 2011-07-14 | Ferdinand Villegas Legaspi | Systems and methods for automatically disabling appliances |
| CN202252257U (en) * | 2011-08-31 | 2012-05-30 | 卡尔迈耶（中国）有限公司 | Chain control device for air blowing valve |
-
2012
- 2012-08-10 CN CN 201210285788 patent/CN102816884B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104443A (en) * | 1985-06-13 | 1986-02-10 | 冶金工业部包头钢铁设计研究院 | The control of Control of hot-blast of alter-parallel blasting from stove of blast furnace temperature |
| US20110170377A1 (en) * | 2010-01-12 | 2011-07-14 | Ferdinand Villegas Legaspi | Systems and methods for automatically disabling appliances |
| CN202252257U (en) * | 2011-08-31 | 2012-05-30 | 卡尔迈耶（中国）有限公司 | Chain control device for air blowing valve |
Non-Patent Citations (1)
| Title |
|---|
| 卢燕等: "高炉热风炉监控系统", 《电气传动》, vol. 38, no. 6, 30 June 2008 (2008-06-30), pages 48 - 51 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112029941A (en) * | 2020-08-13 | 2020-12-04 | 北京首钢自动化信息技术有限公司 | Cold air valve closing valve control circuit and hot blast stove control system |
| CN112029941B (en) * | 2020-08-13 | 2021-12-10 | 北京首钢自动化信息技术有限公司 | Cold air valve closing valve control circuit and hot blast stove control system |
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| CN102816884B (en) | 2013-09-04 |
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