JPH029231B2 - - Google Patents
Info
- Publication number
- JPH029231B2 JPH029231B2 JP59053077A JP5307784A JPH029231B2 JP H029231 B2 JPH029231 B2 JP H029231B2 JP 59053077 A JP59053077 A JP 59053077A JP 5307784 A JP5307784 A JP 5307784A JP H029231 B2 JPH029231 B2 JP H029231B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure water
- valve
- passage
- inlet
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 238000005452 bending Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Description
【発明の詳細な説明】
本発明は製鋼用高圧冷却水を噴出零、低圧水噴
出、高圧水噴出の３段階に切換えてウオーターハ
ンマー緩衝バイパスを省略しかつエネルギー損失
を軽減することを目的とするものである。[Detailed Description of the Invention] The purpose of the present invention is to switch high-pressure cooling water for steel manufacturing into three stages: zero jetting, low-pressure water jetting, and high-pressure water jetting, thereby omitting the water hammer buffer bypass and reducing energy loss. It is something.
従来の圧延スラブの上下に配設したノズルヘツ
ダー用高圧水切換弁にはウオーターハンマー緩衝
用バイパス回路を有し、高圧水噴出停止時におい
ては同バイパス回路より約３Kg／cm2程度の低圧水
を常時噴出させていたため、水量の無駄のみなら
ず、2000KW〜3500KW程度の大形電動機を常時
運転しなければならないため電力の莫大な損失を
生じている。 Conventional high-pressure water switching valves for nozzle headers placed above and below the rolling slab have a water hammer buffer bypass circuit, and when high-pressure water jetting is stopped, low-pressure water of approximately 3 kg/cm 2 is constantly supplied from the bypass circuit. Not only was the amount of water was wasted, but a large electric motor of about 2000KW to 3500KW had to be operated at all times, resulting in a huge loss of electricity.
本発明は上記実情に鑑みなされたものであつて
圧延スラブａの通過後はノズルヘツダーｎからの
高圧噴出水を零に切換え得るものであつて、内部
筒状弁函に高圧水出入口を設け、内部に上記出入
口の往復摺動開閉弁を嵌合し、同開閉弁に減圧屈
曲通路を設け、同通路の入口を上記高圧水入口側
に開口し、同通路の減圧水出口を上記高圧水出口
側に開口し、上記高圧水出入口の上記開閉弁によ
る開路および閉路の中間位置において上記高圧水
出入口が上記通路により連通状態に保持されるこ
とを特徴とする高圧水切換弁に関するものであ
る。 The present invention has been made in view of the above-mentioned circumstances, and is capable of switching the high-pressure jet water from the nozzle header n to zero after the rolling slab a has passed. A reciprocating sliding on-off valve of the above-mentioned inlet/outlet is fitted to the above-mentioned inlet/outlet, a reduced-pressure bent passage is provided in the on-off valve, the inlet of the passage is opened on the above-mentioned high-pressure water inlet side, and the reduced-pressure water outlet of the same passage is opened on the above-mentioned high-pressure water outlet side. The present invention relates to a high-pressure water switching valve, wherein the high-pressure water inlet and outlet are maintained in a communicating state by the passage at an intermediate position between opening and closing by the on-off valve of the high-pressure water inlet and outlet.
本発明を図面に示す実施例について説明する
と、弁函１の内部が上下端閉鎖部２，３を有する
直立円筒４であつて下部内側面に高圧水入口５を
設け、中程内側面に高圧水出口６を設ける。上記
円筒４内には上下方向往復摺動開閉弁７を嵌合
し、同弁７の上端面には往復動作管８を接続し、
同管８は上端閉鎖部２を摺動自在にかつ水密に貫
通し同閉鎖部２の上部に連設した往復駆動装置９
に挿入される。上記開閉弁７は中空部１０を有し
上記往復動作管８を連通し、同中空部１０は上記
高圧水入口５側に連通路１１により連通し、かつ
上記動作管８の上端は上記駆動装置９の上端に設
けた密閉シリンダー１２の内部に開口連通させ
る。上記開閉弁７には第５図に示すように減圧用
のラビリンス屈曲通路１３を設け、同通路１３の
入口１４は上記高圧水入口５側に開口し、減圧水
出口１５は高圧水出口６側に開口させるものであ
る（第３図）。そしてこの通路入口４および減圧
水出口１５は第２図に示す位置即ち高圧水出入口
５，６の閉路位置ではそれぞれ高圧水入口５側に
開口し、第４図に示すように開路位置では高圧水
出口６側にそれぞれ開口するが上記開路および閉
路の中間位置では第３図に示すように入口１４が
高圧水入口５側に、出口１５が高圧水出口６側に
開口し高圧水出入口５，６を同通路１３でのみ連
通させることができる。尚図中１６で示すものは
往復駆動装置９を形成するシリンダー、１７は親
ピストンストツパー、１８は親ピストン、１９は
同親ピストン１８，１８の内周面に嵌合する子ピ
ストンであつて上記動作管８に摺動方向に固定さ
れ同管８および親子ピストン１８，１９は共通中
心線上に設けられる。又２０はシリンダー１６内
への空気インレツトである。 To explain the embodiment of the present invention shown in the drawings, the inside of the valve case 1 is an upright cylinder 4 having upper and lower end closed portions 2 and 3, a high pressure water inlet 5 is provided on the inner surface of the lower part, and a high pressure water inlet is provided on the inner surface of the middle part. A water outlet 6 is provided. A vertical reciprocating sliding on/off valve 7 is fitted into the cylinder 4, and a reciprocating pipe 8 is connected to the upper end surface of the valve 7.
The pipe 8 slidably and watertightly penetrates the upper end closing part 2, and a reciprocating drive device 9 is connected to the upper part of the closing part 2.
inserted into. The on-off valve 7 has a hollow part 10 and communicates with the reciprocating pipe 8, the hollow part 10 communicates with the high pressure water inlet 5 side through a communication passage 11, and the upper end of the operating pipe 8 is connected to the drive device. The opening communicates with the inside of a closed cylinder 12 provided at the upper end of the cylinder 9. As shown in FIG. 5, the opening/closing valve 7 is provided with a labyrinth bent passage 13 for pressure reduction, the inlet 14 of the passage 13 opens on the high pressure water inlet 5 side, and the reduced pressure water outlet 15 opens on the high pressure water outlet 6 side. (Figure 3). The passage inlet 4 and the reduced pressure water outlet 15 open toward the high pressure water inlet 5 at the positions shown in FIG. The inlet 14 opens on the high pressure water inlet 5 side, and the outlet 15 opens on the high pressure water outlet 6 side, as shown in FIG. can be communicated only through the same passage 13. 16 in the figure is a cylinder forming the reciprocating drive device 9, 17 is a parent piston stopper, 18 is a parent piston, and 19 is a child piston that fits into the inner peripheral surface of the parent pistons 18, 18. The operating tube 8 and the parent and child pistons 18 and 19 are fixed in the sliding direction to the operating tube 8 and are disposed on a common center line. Also, 20 is an air inlet into the cylinder 16.
従つて圧延スラブａがノズルヘツダーｎ内を通
過するに際して、電動機２１を始動し、高圧ポン
プ２２を始動し絞り弁（昇圧弁）２３を動作し、
逆止弁２４を介してエヤレシーバー２５内の空気
圧が200Kg／cm2に到達した状態では第２図に示す
閉鎖状態において高圧水入口５側に200Kg／cm2の
高圧水がかかる。この状態において駆動装置９を
動作して第３図に示す中間位置に開閉弁７を移動
させると通路１３の入口１４から上記高圧水が同
通路１３内に入り屈曲通過してエネルギーを損失
して減圧状態（約10Kg／cm2）となつて出口１５か
ら高圧水出口６内に排出され同高圧水出口６から
低圧水をノズルヘツダーｎに送水することができ
る。そしてさらに第４図に示す位置即ち開路位置
に開閉弁７を上昇させると上記高圧水出入口５，
６は連通してノズルヘツダーｎから上記高圧水を
噴出しスラブａを冷却することができる。スラブ
ａがノズルヘツダーｎを通過した後開閉弁７を第
３図に示す中間位置に摺動させてノズルヘツダー
ｎからの噴出水を約３Kg／cm2に低下させその後第
２図に示す閉路位置に開閉弁７を下降させて高圧
水出入口５，６を閉路しその状態において電動機
２１およびポンプ２２を停止し上述の動作を繰返
す（第６図参照）。 Therefore, when the rolled slab a passes through the nozzle header n, the electric motor 21 is started, the high pressure pump 22 is started, and the throttle valve (boosting valve) 23 is operated,
When the air pressure in the air receiver 25 reaches 200 kg/cm 2 via the check valve 24, high pressure water of 200 kg/cm 2 is applied to the high pressure water inlet 5 side in the closed state shown in FIG. In this state, when the drive device 9 is operated to move the on-off valve 7 to the intermediate position shown in FIG. 3, the high-pressure water enters the passage 13 from the entrance 14 of the passage 13 and passes through the passage 13, losing energy. The reduced pressure (approximately 10 kg/cm 2 ) is discharged from the outlet 15 into the high-pressure water outlet 6, and the low-pressure water can be fed from the high-pressure water outlet 6 to the nozzle header n. Then, when the on-off valve 7 is further raised to the position shown in FIG.
6 communicates with each other so that the high pressure water can be jetted out from the nozzle header n to cool the slab a. After the slab a passes the nozzle header n, the on-off valve 7 is slid to the intermediate position shown in Fig. 3 to reduce the water jetted from the nozzle header n to about 3 kg/ cm2 , and then opened and closed to the closed position shown in Fig. 2. The valve 7 is lowered to close the high-pressure water inlets and outlets 5 and 6, and in this state, the electric motor 21 and pump 22 are stopped, and the above-described operation is repeated (see FIG. 6).
本発明は上述のように構成したので製鋼用高圧
冷却水を零から高圧まで３段階に順次切換え得て
ウオーターハンマーによる影響を緩和し、緩衝バ
イパス回路を省略し得るばかりでなく送水を容易
に停止するこができかつ停止工程を上記高圧水噴
出工程に交互に採用し得るため停止中の動力を省
略し電力料金を著しく節減することができるよう
になつた。 Since the present invention is configured as described above, it is possible to sequentially switch high-pressure cooling water for steelmaking in three stages from zero to high pressure, thereby alleviating the effects of water hammer, and not only making it possible to omit the buffer bypass circuit, but also easily stopping the water supply. Since the stop process can be used alternately with the above-mentioned high-pressure water jetting process, it has become possible to omit the power required during the stop process and to significantly reduce electricity charges.
第１図は本発明の高圧水切換弁を用いた配管
図、第２図は同弁の閉路状態縦断面図、第３図は
中間位置の縦断面図、第４図は開路状態縦断面
図、第５図は減圧屈曲通路の拡大縦断面図、第６
図は３段階圧力・時間説明図である。
１……内部筒状弁函、５，６……高圧水出入
口、７……往復摺動開閉弁、１３……減圧屈曲通
路、１４……入口、１５……減圧水出口。
Fig. 1 is a piping diagram using the high-pressure water switching valve of the present invention, Fig. 2 is a longitudinal cross-sectional view of the valve in a closed state, Fig. 3 is a longitudinal cross-sectional view of the valve in an intermediate position, and Fig. 4 is a longitudinal cross-sectional view of the valve in an open state. , FIG. 5 is an enlarged vertical sectional view of the decompression bending passage, and FIG.
The figure is a three-stage pressure/time explanatory diagram. 1...Internal cylindrical valve box, 5, 6...High pressure water inlet/outlet, 7...Reciprocating sliding on/off valve, 13...Decompression curved passage, 14...Inlet, 15...Reduced pressure water outlet.
Claims (1)
け、内部に上記出入口５，６の往復摺動開閉弁７
を嵌合し、同開閉弁７に減圧屈曲通路１３を設
け、同通路１３の入口１４を上記高圧水入口５側
に開口し、同通路１３の減圧水出口１５を上記高
圧水出口６側に開口し、上記高圧水出入口５，６
の上記開閉弁７による開路および閉路の中間位置
において上記高圧水出入口５，６が上記通路１３
により連通状態に保持されることを特徴とする高
圧水切換弁。1 High-pressure water inlets and outlets 5 and 6 are provided in the internal cylindrical valve box 1, and reciprocating sliding on-off valves 7 for the inlets and outlets 5 and 6 are provided inside.
A reduced pressure bending passage 13 is provided in the opening/closing valve 7, an inlet 14 of the passage 13 is opened on the high pressure water inlet 5 side, and a reduced pressure water outlet 15 of the passage 13 is opened on the high pressure water outlet 6 side. The high pressure water inlets and outlets 5 and 6 are opened.
At an intermediate position between opening and closing by the on-off valve 7, the high-pressure water inlets and outlets 5 and 6 connect to the passage 13.
A high-pressure water switching valve characterized by being maintained in a communicating state by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5307784A JPS60196484A (en) | 1984-03-19 | 1984-03-19 | High-pressure water switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5307784A JPS60196484A (en) | 1984-03-19 | 1984-03-19 | High-pressure water switch valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60196484A JPS60196484A (en) | 1985-10-04 |
| JPH029231B2 true JPH029231B2 (en) | 1990-03-01 |
Family
ID=12932736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5307784A Granted JPS60196484A (en) | 1984-03-19 | 1984-03-19 | High-pressure water switch valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60196484A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715109B (en) * | 2019-10-17 | 2021-05-28 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Self-cleaning multi-stage pressure reduction regulating valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521630A (en) * | 1975-06-24 | 1977-01-07 | Hitachi Ltd | Circulation distance control type regulating valve |
-
1984
- 1984-03-19 JP JP5307784A patent/JPS60196484A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521630A (en) * | 1975-06-24 | 1977-01-07 | Hitachi Ltd | Circulation distance control type regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60196484A (en) | 1985-10-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |