CN105987810A - Method for detecting whether electromagnetic valve of nitrogen pressure tank fails - Google Patents
Method for detecting whether electromagnetic valve of nitrogen pressure tank fails Download PDFInfo
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- CN105987810A CN105987810A CN201510080563.0A CN201510080563A CN105987810A CN 105987810 A CN105987810 A CN 105987810A CN 201510080563 A CN201510080563 A CN 201510080563A CN 105987810 A CN105987810 A CN 105987810A
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- nitrogen pressure
- electromagnetic valve
- nitrogen
- air intake
- intake valve
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 234
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000001514 detection method Methods 0.000 claims abstract description 57
- 230000008878 coupling Effects 0.000 claims description 27
- 238000010168 coupling process Methods 0.000 claims description 27
- 238000005859 coupling reaction Methods 0.000 claims description 27
- 239000013589 supplement Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 2
- 235000011613 Pinus brutia Nutrition 0.000 claims description 2
- 241000018646 Pinus brutia Species 0.000 claims description 2
- 230000004087 circulation Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003020 moisturizing effect Effects 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
- Magnetically Actuated Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention provides a method for detecting whether a nitrogen pressure tank electromagnetic valve has a fault, which is characterized in that the nitrogen pressure tank electromagnetic valve is detected by adopting a method combining computer detection and field pipeline detection to judge whether the nitrogen pressure tank electromagnetic valve has a fault of untight closing or automatic opening and can more quickly judge whether the electromagnetic valve works normally. If a fault occurs, the position of the electromagnetic valve with the fault can be accurately judged, and shortcuts such as analysis, judgment, maintenance and the like are provided for production, so that the normal operation of a water circulation system in a blast furnace and hot blast stove demineralized water closed circulation system is ensured, the service life of equipment is prolonged, and the normal production of the blast furnace is ensured.
Description
Technical field
The present invention relates to a kind of detect the nitrogen pressure method that whether breaks down of tank electromagnetic valve.
Background technology
Circulation water of blast furnace system process first passes through mechanical filter approximately as: the industrial fresh water from water supply plant and filters,
Subsequently into cation bed, remove the cation in water, utilize the overbottom pressure of water to enter removing carbon dioxide device, utilize depositing of intermediate water tank
Storage and regulating pondage effect, middle water pump, from intermediate water tank water suction, pressurization, enters anion bed and removes the anion in water, storage
As the supplementary water of recirculated water in sweet-water tank.Along with the consumption of water in closed circulating water system system, the water level in nitrogen pressure tank
When being reduced to the low water level of design, the small pump chain with water-level gauge starts automatically, the water in extraction sweet-water tank, passes through
Oxygen-eliminating device deoxygenation, replenishes in nitrogen pressure tank, circulates continuously for circulation current.
In blast furnace and air stove demineralized water closed circulating water system system, nitrogen pressure tank is as important moisturizing facility, in properly functioning feelings
Under condition, its top is full of nitrogen, and bottom is full of water, chain with small pump by nitrogen pressure tank water-level gauge, controls small pump low
Water level starts moisturizing, and high water level is automatically stopped operation, it is ensured that in nitrogen pressure tank, water level maintains normal interval: 2.2 meters to 2.4
Rice, it is ensured that in circulation, hydropenia or the water yield can not be not excessive.If a large amount of hydropenias in system, the water in pipeline is discontinuous,
Water would not form circulation, and the intrasystem water yield is excessive, then pressure can cause weak part to leak higher than design pressure, gives
The high and stable yields of production run brings huge hidden danger.Therefore in nitrogen pressure tank, normal water level fills for maintaining circulation flow to have
Foot water and continuous and steady operation provides safeguard.Nitrogen pressure tank top nitrogen Main Function be energy-conservation, keep water underheat degree,
Smoothly moisturizing, the effect such as expand with heat and contract with cold of buffered water.Blast furnace closed circulating water system system is in operation, and can lead under certain conditions
Causing the water cumulative volume in pipeline to increase, be full of water, and water is difficult to be compressed in pipeline, therefore nitrogen pressure tank becomes water in water system
Can the fender system of volume and moisturizing, the metering facility of sluicing, normally supplement and maintain nitrogen amount within normal range, be
Water safety ensures extremely important link.
But during actual production, the phenomenon that nitrogen pressure tank electromagnetic valve is not closed completely, electromagnetic valve one often occur
Denier is not closed completely, and the nitrogen amount allowed in nitrogen pressure tank was unable to maintain that within normal range, now will result in internal system
Imbalance of pressure, direct result is exactly that the hydraulic pressure causing water circulation system increases sharply, pump inlet pressure increase sharply, outlet pressure also with
Surge, and when pressure has exceeded the maximum working (operation) pressure (MWP) of pipeline and watering equipment, circulation arises that pipe breakage,
Sealing position leaks, and not only can shorten the service life of equipment, and blast furnace can be caused to be forced damping down and cannot normally produce.
Another situation is the fault that electromagnetic valve cannot be opened, when pressure occurs on the low side or higher, and electromagnetic valve
Can not automatically turn on or close for regulating pressure to normal range, in causing nitrogen pressure tank, nitrogen pressure is too low or too high,
Equipment in circulation there will be exception, even results in equipment damage.
Summary of the invention
It is an object of the invention to provide and a kind of detect the nitrogen pressure method that whether breaks down of tank electromagnetic valve, use COMPUTER DETECTION and
On-the-spot pipeline detects the method combined, and detects nitrogen pressure tank electromagnetic valve, it is judged that whether nitrogen pressure tank electromagnetic valve occurs closing
The fault that sternly maybe cannot not automatically turn on, can judge that electromagnetic valve is the most working properly faster.As faulty, it is possible to
To judge the position of the electromagnetic valve broken down more accurately, for produce provide analysis, judge, the shortcut such as maintenance,
Thus ensure that in blast furnace and air stove demineralized water closed circuit circulatory system, and water circulation system properly functioning, extend equipment
Service life, it is ensured that the normal production of blast furnace.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of detect the nitrogen pressure method that whether breaks down of tank electromagnetic valve, including following method:
1) the most structurally: in the direction of input nitrogen, the coupling part before air intake valve a is increased snap joint
Be flexible coupling, in the direction of denitrogen gas, the coupling part after drain tap b is increased being flexible coupling of snap joint；
2) detecting, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve has closedown not
Sternly；
3) detecting, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve cannot be automatic
Open.
Described detects, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, and whether detection nitrogen pressure tank electromagnetic valve has closedown
The tightest method step is as follows:
1) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, curve once zigzag upwards, downwards,
Being to enter nitrogen pressure tank due to nitrogen, in the nitrogen pressure upper limit, denitrogen opened by denitrogen electromagnetic valve always, use curvilinear characteristic and
Electromagnetic valve display signal may determine that, it may be possible to nitrogen air intake valve is not closed completely, and now PV value is always in the upper limit；
2) on-the-spot pipeline detection is carried out: close air intake valve a, drain tap a and air intake valve b, unclamp air intake valve a
And the snap close dismantle lower contact of being flexible coupling between air intake valve b, check whether air intake valve a and air intake valve b has leakage,
It is not closed completely if any leakage explanation air intake valve a or air intake valve b；
3) passing through COMPUTER DETECTION: observe nitrogen pressure plots changes, curve once zigzag is the most downward, then up,
Be to discharge nitrogen pressure tank due to nitrogen always, limit under nitrogen pressure, enter nitrogen electromagnetic valve and open into nitrogen, use curvilinear characteristic and
Electromagnetic valve display signal may determine that, it may be possible to drain tap is not closed completely close, and now PV value is always at lower limit；
4) detection of on-the-spot pipeline is carried out: (1) closes drain tap a, the snap close tearing open of being flexible coupling after unclamping drain tap b
Unload lower contact, seen whether leakage, be not closed completely if any leakage explanation drain tap a；(2) drain tap b is closed, pine
Begin to rehearse the snap close dismantle lower contact of being flexible coupling after air valve b, has seen whether leakage, if any leakage explanation drain tap
B is not closed completely.
The described method combined with on-the-spot pipeline detection by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve cannot be automatic
The method step opened is as follows:
1) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, when entering nitrogen electromagnetic valve and cannot open, nitrogen
Cannot supplement, pressure diminishes always, and direction of a curve reduces downwards, and nitrogen pressure reduces, and curves of water level is the most in rising trend；
Diminish in conjunction with nitrogen pressure curve values and PV value, curves of water level value raises, it is judged that being likely to be air intake valve cannot open automatically
Open；
2) on-the-spot pipeline detection is carried out: close drain tap a, unclamp being flexible coupling between air intake valve a and air intake valve b
Snap close also dismantles lower contact, detects air intake valve a and air intake valve b；
3) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, when denitrogen electromagnetic valve cannot be opened, due to
Nitrogen cannot be discharged, and pressure raises always, and direction of a curve upwards raises, and nitrogen pressure raises, and curves of water level then becomes in declining
Gesture；Change in conjunction with nitrogen pressure curve values and PV value raises, curves of water level is on a declining curve, it is judged that be likely to be denitrogen
Valve cannot automatically turn on；
4) on-the-spot pipeline detection is carried out: being flexible coupling after unclamping drain tap b, to drain tap a and drain tap b
Detect.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of method whether nitrogen pressure tank electromagnetic valve breaks down, employing COMPUTER DETECTION and on-the-spot pipeline of detecting detects and combines
Method, nitrogen pressure tank electromagnetic valve is detected, it is judged that whether nitrogen pressure tank electromagnetic valve occurs being not closed completely and maybe cannot automatically turn on
Fault, can judge that electromagnetic valve is the most working properly faster.As faulty, it is also possible to judge more accurately to set out
The position of the electromagnetic valve of raw fault, for produce provide analysiss, judge, the shortcut such as maintenance, thus ensure that blast furnace with
In air stove demineralized water closed circuit circulatory system, water circulation system properly functioning, extend the service life of equipment, it is ensured that
The normal production of blast furnace.
Accompanying drawing explanation
Fig. 1 is to need in the present invention to judge whether faulty each valve and the structural representation of each connecting line.
In figure: 1. air intake valve a. 2. air intake valve b 3. bypath valve. 4. drain tap a. 5. drain tap b
6. be flexible coupling 7. nitrogen pressure tanks
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is further illustrated:
The method whether nitrogen pressure tank electromagnetic valve breaks down is detected, including following method as it is shown in figure 1, a kind of:
1) the most structurally: in the direction of input nitrogen, the coupling part before air intake valve a1 is increased snap joint
Be flexible coupling 6, in the direction of denitrogen gas, what the coupling part after drain tap b5 increased snap joint is flexible coupling 6；
2) detecting, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve has closedown not
Sternly；
3) detecting, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve cannot be automatic
Open.
By observing computer upward pressure curve and controlling the PV value scope set by electromagnetic valve switch, believe in conjunction with electromagnetic valve switch
Number frequent degree, can make preliminary judgement to the duty of nitrogen pressure tank electromagnetic valve.
Described detects, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, and whether detection nitrogen pressure tank electromagnetic valve has closedown
The tightest method step is as follows:
1) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, curve once zigzag upwards, downwards,
Being to enter nitrogen pressure tank due to nitrogen, in the nitrogen pressure upper limit, denitrogen opened by denitrogen electromagnetic valve always, use curvilinear characteristic and
Electromagnetic valve display signal may determine that, it may be possible to nitrogen air intake valve is not closed completely, and now PV value is always in the upper limit；
2) on-the-spot pipeline detection is carried out: close air intake valve a1, drain tap a4 and air intake valve b2, unclamp intake valve
6 snap closes dismantle lower contact of being flexible coupling between door a1 and air intake valve b2, check air intake valve a1 and air intake valve b2
Whether there is leakage, be not closed completely if any leakage explanation air intake valve a1 or air intake valve b2；
3) passing through COMPUTER DETECTION: observe nitrogen pressure plots changes, curve once zigzag is the most downward, then up,
Be to discharge nitrogen pressure tank due to nitrogen always, limit under nitrogen pressure, enter nitrogen electromagnetic valve and open into nitrogen, use curvilinear characteristic and
Electromagnetic valve display signal may determine that, it may be possible to drain tap is not closed completely close, and now PV value is always at lower limit；
4) on-the-spot pipeline detection is carried out: (1) closes drain tap a4,6 snap closes that are flexible coupling after unclamping drain tap b5
And dismantle lower contact, see whether leakage, be not closed completely if any leakage explanation drain tap a4；(2) drain tap is closed
B5,6 snap closes dismantle lower contact of being flexible coupling after unclamping drain tap b5, see whether leakage, said if any leakage
Bright drain tap b5 is not closed completely.
Because in the case of connecting pipeline and connecting portion appearance leakage between nitrogen pressure tank 7 to valve, the pressure that computer is presented
Force curve also can occur abnormal curvilinear motion, therefore when each valve is carried out Site Detection, should first check for nitrogen pressure tank
Connect pipeline between 7 to valve and whether connecting portion has leakage, in the case of confirmation is leak free, just can accurately judge each electromagnetism
The duty of valve is the most normal.The method checked is: close air intake valve a1 and drain tap a4, checks nitrogen pressure tank 7
To connecting pipeline between valve and whether connecting portion has leakage.
The described method combined with on-the-spot pipeline detection by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve cannot be automatic
The method step opened is as follows:
1) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, when entering nitrogen electromagnetic valve and cannot open, nitrogen
Cannot supplement, pressure diminishes always, and direction of a curve reduces downwards, and nitrogen pressure reduces, and curves of water level is the most in rising trend；
In this case, water excess in system can be mistakenly considered and draining, and hydropenia in actually draining can aggravate circulation.
Now, diminish in conjunction with nitrogen pressure curve values and PV value, curves of water level value raise, should judge to be likely to be intake valve
Door cannot automatically turn on；
2) carrying out the detection of on-the-spot pipeline: close drain tap a4, that unclamps between air intake valve a1 and air intake valve b2 is soft
Connect 6 snap closes and dismantle lower contact, air intake valve a1 and air intake valve b2 is detected；
3) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, when denitrogen electromagnetic valve cannot be opened, due to
Nitrogen cannot be discharged, and pressure raises always, and direction of a curve upwards raises, and nitrogen pressure raises, and curves of water level then becomes in declining
Gesture；In this case, hydropenia in blood circulation can be mistakenly considered and water excess in moisturizing, actually moisturizing aggravation circulation,
Last nitrogen is compressed, and nitrogen pressure drastically raises, if relief valve again can not safe take-off, water pump discharge pressure can exceed
Design pressure and break down.
Another extreme case occurred is: safety valve jumping up, and nitrogen is discharged rapidly, and water level goes up rapidly, and water level exceeds
After water-level gauge range, small pump can be mistakenly considered hydropenia and successively moisturizing, can cause a series of harm time serious.
Therefore when observe nitrogen pressure curve values and PV value raise, curves of water level on a declining curve time, should judge to have can
Can be that denitrogen valve cannot automatically turn on；
4) on-the-spot pipeline detection is carried out: being flexible coupling after unclamping drain tap b5, to drain tap a4 and drain tap
B5 detects.
Bypath valve 3 belongs to stand-by equipment, when producing device fails and normally cannot provide nitrogen, can open bypass
Valve 3 is to ensure that produce is normally carried out；Under conditions of normal production, bypath valve 3 is in normally off, does not affects
To other each valves and the normal detection of pipeline.
Claims (3)
1. one kind is detected the nitrogen pressure method that whether breaks down of tank electromagnetic valve, it is characterised in that include following method:
1) the most structurally: in the direction of input nitrogen, the coupling part before air intake valve a is increased snap joint
Be flexible coupling, in the direction of denitrogen gas, the coupling part after drain tap b is increased being flexible coupling of snap joint；
2) detecting, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve has closedown not
Sternly；
3) detecting, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve cannot be automatic
Open.
The most according to claim 1 a kind of detect the nitrogen pressure method that whether breaks down of tank electromagnetic valve, it is characterised in that
Described detects, with on-the-spot pipeline, the method combined by COMPUTER DETECTION, and whether detection nitrogen pressure tank electromagnetic valve is not closed completely
Method step as follows:
1) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, curve once zigzag upwards, downwards,
Being to enter nitrogen pressure tank due to nitrogen, in the nitrogen pressure upper limit, denitrogen opened by denitrogen electromagnetic valve always, use curvilinear characteristic and
Electromagnetic valve display signal may determine that, it may be possible to nitrogen air intake valve is not closed completely, and now PV value is always in the upper limit；
2) on-the-spot pipeline detection is carried out: close air intake valve a, drain tap a and air intake valve b, unclamp air intake valve a
And the snap close dismantle lower contact of being flexible coupling between air intake valve b, check whether air intake valve a and air intake valve b has leakage,
It is not closed completely if any leakage explanation air intake valve a or air intake valve b；
3) passing through COMPUTER DETECTION: observe nitrogen pressure plots changes, curve once zigzag is the most downward, then up,
Be to discharge nitrogen pressure tank due to nitrogen always, limit under nitrogen pressure, enter nitrogen electromagnetic valve and open into nitrogen, use curvilinear characteristic and
Electromagnetic valve display signal may determine that, it may be possible to drain tap is not closed completely close, and now PV value is always at lower limit；
4) detection of on-the-spot pipeline is carried out: (1) closes drain tap a, the snap close tearing open of being flexible coupling after unclamping drain tap b
Unload lower contact, seen whether leakage, be not closed completely if any leakage explanation drain tap a；(2) drain tap b is closed, pine
Begin to rehearse the snap close dismantle lower contact of being flexible coupling after air valve b, has seen whether leakage, if any leakage explanation drain tap
B is not closed completely.
The most according to claim 1 a kind of detect the nitrogen pressure method that whether breaks down of tank electromagnetic valve, it is characterised in that
The described method combined with on-the-spot pipeline detection by COMPUTER DETECTION, whether detection nitrogen pressure tank electromagnetic valve cannot automatically turn on
Method step as follows:
1) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, when entering nitrogen electromagnetic valve and cannot open, nitrogen
Cannot supplement, pressure diminishes always, and direction of a curve reduces downwards, and nitrogen pressure reduces, and curves of water level is the most in rising trend；
Diminish in conjunction with nitrogen pressure curve values and PV value, curves of water level value raises, it is judged that being likely to be air intake valve cannot open automatically
Open；
2) on-the-spot pipeline detection is carried out: close drain tap a, unclamp being flexible coupling between air intake valve a and air intake valve b
Snap close also dismantles lower contact, detects air intake valve a and air intake valve b；
3) COMPUTER DETECTION is passed through: observe nitrogen pressure plots changes, when denitrogen electromagnetic valve cannot be opened, due to
Nitrogen cannot be discharged, and pressure raises always, and direction of a curve upwards raises, and nitrogen pressure raises, and curves of water level then becomes in declining
Gesture；Change in conjunction with nitrogen pressure curve values and PV value raises, curves of water level is on a declining curve, it is judged that be likely to be denitrogen
Valve cannot automatically turn on；
4) on-the-spot pipeline detection is carried out: being flexible coupling after unclamping drain tap b, to drain tap a and drain tap b
Detect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080563.0A CN105987810B (en) | 2015-02-13 | 2015-02-13 | Method for detecting whether electromagnetic valve of nitrogen pressure tank fails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080563.0A CN105987810B (en) | 2015-02-13 | 2015-02-13 | Method for detecting whether electromagnetic valve of nitrogen pressure tank fails |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105987810A true CN105987810A (en) | 2016-10-05 |
| CN105987810B CN105987810B (en) | 2019-03-26 |
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ID=57041447
Family Applications (1)
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|---|---|---|---|
| CN201510080563.0A Active CN105987810B (en) | 2015-02-13 | 2015-02-13 | Method for detecting whether electromagnetic valve of nitrogen pressure tank fails |
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Cited By (4)
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| CN110325834A (en) * | 2017-02-24 | 2019-10-11 | 加特可株式会社 | The normal decision maker of solenoid electric valve |
| CN111926132A (en) * | 2020-08-04 | 2020-11-13 | 鞍钢股份有限公司 | Method for rapidly judging damage of check valve of blast furnace water pump |
| CN111947026A (en) * | 2020-08-04 | 2020-11-17 | 鞍钢股份有限公司 | Method for rapidly judging whether gate valve flashboard between nitrogen pressure tank and water replenishing pump falls off or not |
| CN111996319A (en) * | 2020-08-04 | 2020-11-27 | 鞍钢股份有限公司 | High-water-level accident handling method for nitrogen pressure tank of demineralized water system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110325834A (en) * | 2017-02-24 | 2019-10-11 | 加特可株式会社 | The normal decision maker of solenoid electric valve |
| CN110325834B (en) * | 2017-02-24 | 2021-11-09 | 加特可株式会社 | Normality determination device for electromagnetic control valve |
| CN111926132A (en) * | 2020-08-04 | 2020-11-13 | 鞍钢股份有限公司 | Method for rapidly judging damage of check valve of blast furnace water pump |
| CN111947026A (en) * | 2020-08-04 | 2020-11-17 | 鞍钢股份有限公司 | Method for rapidly judging whether gate valve flashboard between nitrogen pressure tank and water replenishing pump falls off or not |
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| CN111996319B (en) * | 2020-08-04 | 2021-10-22 | 鞍钢股份有限公司 | High-water-level accident handling method for nitrogen pressure tank of demineralized water system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105987810B (en) | 2019-03-26 |
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