CN104384458A - Method for detecting internal leakage of hydraulic cylinders of CSP (compact strip production) continuous casting segments - Google Patents
Method for detecting internal leakage of hydraulic cylinders of CSP (compact strip production) continuous casting segments Download PDFInfo
- Publication number
- CN104384458A CN104384458A CN201410654021.5A CN201410654021A CN104384458A CN 104384458 A CN104384458 A CN 104384458A CN 201410654021 A CN201410654021 A CN 201410654021A CN 104384458 A CN104384458 A CN 104384458A
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- hydraulic cylinder
- hydraulic cylinders
- fan
- detection method
- continuous casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a method for detecting the internal leakage of hydraulic cylinders of CSP (compact strip production) continuous casting segments, which includes two types of detection states: (Step 1) flow meters are respectively mounted on the oil inlet and outlet tubes of the hydraulic cylinders of the CSP continuous casting segments; (Step 2) the hand-operated reversing valves of the hydraulic cylinders are operated, so that the piston rods of the hand-operated reversing valves are extended out or retracted until a static state; or the hand-operated reversing valves of the hydraulic cylinders are operated to move toward the closing direction of the segments; (Step 3) the reading changes on the dials of the flow meters are observed, and if the motion of the piston rods of the hydraulic cylinders already stops but the flow meters show that flow still exists, then the hydraulic cylinders have internal leakage. The method has the following advantages: the hydraulic cylinders do not need to be dismounted, operation is simple, equipment maintenance problems are solved, the overhaul period is shortened, the hydraulic cylinders with internal leakage are prevented from getting on line, and by identifying and replacing the hydraulic cylinders with internal leakage in time, the method prevents the adverse affection of the on-line usage of the hydraulic cylinders with internal leakage on production, thus ensuring the normality of the liquid core reduction function and product specifications.
Description
Technical field
The present invention relates to field of metallurgy, particularly relate to CSP continuous casting segment hydraulic cylinder interior leakage detector and method.
Background technology
CSP continuous casting segment has liquid core press function, and except wherein one section is passed through except two hydraulic cylinders controls, all the other sections are four hydraulic cylinders and control, and function is advanced, control complexity.CSP does not have fan-shaped section hydraulic cylinder interior leakage detection method at the beginning of going into operation, only have the fan-shaped section position that shows when using of reaching the standard grade out of control, or pressure anomaly, can judge to let out in whether hydraulic cylinder, do not detect outside interior drainage cylinder pressure is online, there will be position excursion after reaching the standard grade, even cause casting blank bulging, bring to production and have a strong impact on.Conventional detection method is pulled down by each hydraulic cylinder, and testboard detects, wastes time and energy like this, the time between overhauls(TBO) is quite long.
Summary of the invention
Technical problem to be solved by this invention be realize a kind of CSP continuous casting segment quick, convenient, efficiently, detection method accurately.
To achieve these goals, the technical solution used in the present invention is: a kind of CSP continuous casting segment hydraulic cylinder interior leakage detection method, comprises two kinds of detected states:
The uninstalled detection method of (a) fan-shaped section active side:
Step 1, respectively flowmeter is installed by the turnover oil pipe line of CSP continuous casting segment hydraulic cylinder;
The hand-operated direction valve of step 2, operation hydraulic cylinder makes its piston rod extended or retracted, until inactive state;
Step 3, the reading change observed on flowmeter dial plate, if hydraulic cylinder piston rod stop motion, but still there is flow in flowmeter display, then hydraulic cylinder exists Inner and lets out;
The mounted detection method of (b) fan-shaped section active side:
Step 1, respectively flowmeter is installed by the turnover oil pipe line of CSP continuous casting segment hydraulic cylinder;
The hand-operated direction valve of step 2, operation hydraulic cylinder makes it move towards fan-shaped section closing direction;
Step 3, the reading change observed on flowmeter dial plate, if hydraulic cylinder piston rod stop motion, but still there is flow in flowmeter display, then hydraulic cylinder exists Inner and lets out.
Do not install with in the step 3 of mounted detection method in fan-shaped section active side, if flowmeter display still there is flow, and when there is no external leakage then in let out fault, if flow > 0.5l/min, hydraulic cylinder be changed.
Do not install with in mounted detection method in fan-shaped section active side, for there being fan-shaped 1 section of two hydraulic cylinders, when letting out fault in existing, after hand-operated direction valve being switched to meta, the hydraulic tube on the left of fan-shaped section or right side is pulled out, opposite side retains, again repeat above operation, can judge it is let out in any side cylinder.
Do not install with in mounted detection method in fan-shaped section active side, for there being fan-shaped 2,3,4 sections of four hydraulic cylinders, when letting out fault in existing, a set of oil piping system is used between two in four hydraulic cylinders, retain a hydraulic cylinder works in a set of oil piping system, and after hand-operated direction valve is switched to meta, the hydraulic tube on the left of fan-shaped section or right side is pulled out, opposite side retains, again repeat above operation, can judge it is let out in any side cylinder.
On the pipeline that described flowmeter is arranged on hydraulic cylinder or valve block.
The invention has the advantages that without the need to dismantling hydraulic cylinder, simple to operate, solve a maintenance of equipment difficult problem, shorten the time between overhauls(TBO), stopped interior drainage cylinder pressure and reached the standard grade, by identifying interior drainage cylinder pressure in time, replace in time, avoid reaching the standard grade using and bring adverse effect to production, ensure that liquid core press function is normal, ensure that product specification is cashed.Substitute common detection methods, use manpower and material resources sparingly, increase work efficiency, shorten the time between overhauls(TBO).
Detailed description of the invention
CSP continuous casting machine fan-shaped segment liquid core Reduction Technology (LCR) is a casting stream guidance system, be made up of the fan-shaped section of four position changeables, each fan-shaped section is made up of active side and fixation side, respectively installed pair of hydraulic cylinders (fan-shaped 1 section is only had bottom a pair at its top and bottom, tip position is fixed), each hydraulic cylinder is equipped with position and pressure sensor, for detecting position and the pressure of fan-shaped section active side.
During particular exam, first, hydraulic cylinder turnover oil pipe line installs flowmeter (this flowmeter can be arranged on pipeline or on valve block), afterwards according to the uninstalled detection method of fan-shaped section active side and the mounted detection method of fan-shaped section active side, two kinds of diverse ways check.
The uninstalled detection method of fan-shaped section active side:
The uninstalled detection method of (a) fan-shaped section active side:
Step 1, first fan-shaped section hydraulic tube to be connected, and four pin plugs of MF1 survey tool are connected on the flowmeter 1 or 2 of valve platform, then 220V attaching plug is plugged;
The hand-operated direction valve of step 2, operation hydraulic cylinder makes its piston rod extended or retracted, until inactive state;
Step 3, the reading change observed on MF1 flowmeter dial plate, if hydraulic cylinder stop motion, and also have reading, then this fan-shaped section is let out in inspection does not have to have when external leakage, and flow > 0.5l/min then will change hydraulic cylinder;
Step 4, hand-operated direction valve is switched to meta after the hydraulic tube on the left of fan-shaped section or right side is pulled out, opposite side retain, again repeat above operation, can judge it is let out in which cylinder.After again hand-operated direction valve being switched to meta, fan-shaped section A1, B1 or A2, B2 oil pipe are pulled out, all the other retain, and again repeat above operation, can judge it is let out in which side cylinder.
The mounted detection method of (b) fan-shaped section active side:
Step 1, first fan-shaped section hydraulic tube to be connected, and four pin plugs of MF1 survey tool are connected on the flowmeter 1 or 2 of valve platform, then 220V attaching plug is plugged;
The hand-operated direction valve of step 2, operation hydraulic cylinder makes it towards the motion of fan-shaped section closing direction, can only move, make sure to keep in mind to move towards opening direction, otherwise fan-shaped section can be damaged time namely reversing valve operated towards fan-shaped section closing direction;
Observe the reading change on MF1 flowmeter dial plate, if hydraulic cylinder stop motion, and also have reading, then this fan-shaped section is let out in inspection does not have to have when external leakage, and flow > 0.5l/min then will change hydraulic cylinder;
Step 4, hand-operated direction valve is switched to meta after the hydraulic tube on the left of fan-shaped section or right side is pulled out, opposite side retain, again repeat above operation, can judge it is let out in which cylinder.After again hand-operated direction valve being switched to meta, fan-shaped section A1, B1 or A2, B2 oil pipe are pulled out, all the other retain, and again repeat above operation, can judge it is let out in which side cylinder.
Claims (5)
1. a CSP continuous casting segment hydraulic cylinder interior leakage detection method, is characterized in that:
Comprise two kinds of detected states:
The uninstalled detection method of (a) fan-shaped section active side:
Step 1, respectively flowmeter is installed by the turnover oil pipe line of CSP continuous casting segment hydraulic cylinder;
The hand-operated direction valve of step 2, operation hydraulic cylinder makes its piston rod extended or retracted, until inactive state;
Step 3, the reading change observed on flowmeter dial plate, if hydraulic cylinder piston rod stop motion, but still there is flow in flowmeter display, then hydraulic cylinder exists Inner and lets out;
The mounted detection method of (b) fan-shaped section active side:
Step 1, respectively flowmeter is installed by the turnover oil pipe line of CSP continuous casting segment hydraulic cylinder;
The hand-operated direction valve of step 2, operation hydraulic cylinder makes it move towards fan-shaped section closing direction;
Step 3, the reading change observed on flowmeter dial plate, if hydraulic cylinder piston rod stop motion, but still there is flow in flowmeter display, then hydraulic cylinder exists Inner and lets out.
2. CSP continuous casting segment hydraulic cylinder interior leakage detection method according to claim 1, it is characterized in that: do not install with in the step 3 of mounted detection method in fan-shaped section active side, if still there is flow in flowmeter display, and when there is no external leakage then in let out fault, if flow > 0.5l/min, hydraulic cylinder be changed.
3. CSP continuous casting segment hydraulic cylinder interior leakage detection method according to claim 2, it is characterized in that: do not install with in mounted detection method in fan-shaped section active side, for there being fan-shaped 1 section of two hydraulic cylinders, when letting out fault in existing, after hand-operated direction valve being switched to meta, the hydraulic tube on the left of fan-shaped section or right side is pulled out, opposite side retains, and again repeats above operation, can judge it is let out in which side cylinder.
4. CSP continuous casting segment hydraulic cylinder interior leakage detection method according to claim 2, it is characterized in that: do not install with in mounted detection method in fan-shaped section active side, for there being fan-shaped 2,3,4 sections of four hydraulic cylinders, when letting out fault in existing, a set of oil piping system is used between two in four hydraulic cylinders, retain a hydraulic cylinder works in a set of oil piping system, and after hand-operated direction valve is switched to meta, the hydraulic tube on the left of fan-shaped section or right side is pulled out, opposite side retains, again repeat above operation, can judge it is let out in any side cylinder.
5. the CSP continuous casting segment hydraulic cylinder interior leakage detection method according to claim 3 or 4, is characterized in that: on the pipeline that described flowmeter is arranged on hydraulic cylinder or valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654021.5A CN104384458B (en) | 2014-11-17 | 2014-11-17 | A kind of CSP continuous casting segment hydraulic cylinder interior leakage detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410654021.5A CN104384458B (en) | 2014-11-17 | 2014-11-17 | A kind of CSP continuous casting segment hydraulic cylinder interior leakage detection method |
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| CN104384458A true CN104384458A (en) | 2015-03-04 |
| CN104384458B CN104384458B (en) | 2016-04-20 |
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| CN201410654021.5A Active CN104384458B (en) | 2014-11-17 | 2014-11-17 | A kind of CSP continuous casting segment hydraulic cylinder interior leakage detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842822A (en) * | 2020-07-29 | 2020-10-30 | 安阳市新普钢铁有限公司 | Continuous casting sector section pressure control process |
| CN112985861A (en) * | 2021-02-19 | 2021-06-18 | 北京首钢自动化信息技术有限公司 | Fault diagnosis method for sector section of withdrawal and straightening machine |
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| RU2234004C1 (en) * | 2002-12-04 | 2004-08-10 | Красноярский государственный технический университет | Bench for testing hydraulic cylinders |
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2014
- 2014-11-17 CN CN201410654021.5A patent/CN104384458B/en active Active
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| RU2234004C1 (en) * | 2002-12-04 | 2004-08-10 | Красноярский государственный технический университет | Bench for testing hydraulic cylinders |
| CN201110290Y (en) * | 2007-09-30 | 2008-09-03 | 比亚迪股份有限公司 | Device for detecting multifunctional oil cylinder |
| CN201522363U (en) * | 2009-11-10 | 2010-07-07 | 武汉钢铁(集团)公司 | Crystallizer width adjusting servo cylinder internal leakage detection device |
| CN102310179A (en) * | 2011-09-07 | 2012-01-11 | 河北钢铁股份有限公司邯郸分公司 | Dynamic slight press fan-shaped section hydraulic system leakage fault on-line judging and early warning method |
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| 刘德军: ""判断油缸内泄的几种实用方法"", 《机床与液压》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842822A (en) * | 2020-07-29 | 2020-10-30 | 安阳市新普钢铁有限公司 | Continuous casting sector section pressure control process |
| CN112985861A (en) * | 2021-02-19 | 2021-06-18 | 北京首钢自动化信息技术有限公司 | Fault diagnosis method for sector section of withdrawal and straightening machine |
| CN112985861B (en) * | 2021-02-19 | 2022-08-09 | 北京首钢自动化信息技术有限公司 | Fault diagnosis method for sector section of withdrawal and straightening machine |
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| CN104384458B (en) | 2016-04-20 |
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