CN207475190U - Inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting - Google Patents
Inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting Download PDFInfo
- Publication number
- CN207475190U CN207475190U CN201721617517.0U CN201721617517U CN207475190U CN 207475190 U CN207475190 U CN 207475190U CN 201721617517 U CN201721617517 U CN 201721617517U CN 207475190 U CN207475190 U CN 207475190U
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- Prior art keywords
- servo valve
- transformer
- electrode
- decline
- electric furnace
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model belongs to smelting,Transformer power supply and distribution,Hydraulic transmission technology field,Disclose the device that a kind of stainless steel electric furnace smelting inhibits harmonic wave in the process,Cause winding to solve transformer in electric furnace steel making,Lead,Switch,The problem of flashover, occurs for casing etc.,The device includes transformer,Hydraulic cylinder and the electrode being arranged in electric furnace,Transformer is equipped with voltmeter,Transformer is also associated with ammeter,Ammeter is connected with electrode,The upper end of electrode and the piston rod of hydraulic cylinder connect,Hydraulic cylinder top is connected with decline servo valve,Decline servo valve and be connected with hydraulic pump,Hydraulic pump is connected with rising servo valve,And rise servo valve,Decline servo valve,It is connect with servo valve control device,The first signal conditioner is equipped between servo valve control device and decline servo valve,Second signal adjuster is equipped between servo valve control device and rising servo valve.The utility model is simple in structure, realizes the elevating control of electrode, avoids the flashover problem of transformer.
Description
Technical field
The utility model is related to smelt, transformer power supply and distribution, hydraulic transmission technology field, and in particular to a kind of stainless steel electricity
Inhibit the device of harmonic wave in stove smelting process.
Background technology
In electric furnace steel making, various impact-furnace charges that transformer will be often subject to electric furnace smelting collapse, molten steel boils.
Arc path and arc gap degree of ionization constantly change, and are constantly mutated so as to cause electric arc arc length and electric current.In smelting process, become
The test that depressor will undergo multiple current break and service short-circuit.Transformer can not withstand the overvoltage effect for having no to inhibit,
Usually cause winding, lead, switch, casing etc. that flashover occurs.The prior art can not solve the above problems.
Utility model content
The purpose of this utility model is can not to withstand to solve transformer in prior art electric furnace steel making to have no to inhibit
Overvoltage effect, usually cause winding, lead, switch, casing etc. occur flashover the problem of.
In order to achieve the above object, the utility model uses following technical scheme：
Inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting, including transformer, hydraulic cylinder and be arranged on electricity
Electrode in stove, transformer are equipped with voltmeter, and transformer is also associated with ammeter, and ammeter is connected with electrode, electrode it is upper
End is connect with the piston rod of hydraulic cylinder, and the cylinder body top of hydraulic cylinder is connected with decline servo valve, is declined servo valve and is connected with hydraulic pressure
Pump, hydraulic pump are connected with rising servo valve, and the inferior part of the cylinder block for rising servo valve and hydraulic cylinder connects, and rise servo valve, decline
Servo valve, ammeter and voltmeter are connect with servo valve control device, are equipped between servo valve control device and decline servo valve
First signal conditioner is equipped with second signal adjuster between servo valve control device and rising servo valve.
Further, the first signal conditioner is decreased to 80% signal conditioner, second signal adjuster for output signal
120% signal conditioner is increased to for output signal.
The utility model has the advantages that relative to the prior art：
The device of harmonic wave is inhibited to use in servo valve control device under during the stainless steel electric furnace smelting of the utility model
The first signal conditioner is equipped between drop servo valve, being equipped with second signal between servo valve control device and rising servo valve is adjusted
Device.Ammeter will detect signal with voltmeter and be delivered to servo valve control device, and servo valve control device is according to current variation value, adjustment
Decline servo valve with rising the open and close state of servo valve, and then control the lifting action of hydraulic cylinder linkage electrode, make current control
In metastable numberical range.For avoid electric current excessive in addition it is short-circuit happen, servo valve control device with decline
One the first signal conditioner of series connection, is decreased to 80% by the output signal of decline in signal between servo valve；In servo valve control
Device processed increases to the output signal of rising with rising a second signal adjuster of connecting in the signal between servo valve
120%.Electrode is forced to be acted with upper slow under type soon, it is ensured that electrode during arcing, slowly it is lower it is fast on by way of keep electricity
After the distance of certain arcing, electrode is kept to be closer to steel scrap distance between pole and steel scrap, arc length shortens, and transformer current increases
The big danger for having short circuit leads to transformer flashover, and electrode wants fast lifting at this time, and electric arc elongates electric current and is decreased in lifting process
After setting value, electrode descending at slow speed continues to further ensures that electric arc is not pulled off with steel scrap distance.The utility model is simple in structure, behaviour
Facilitate, realize the elevating control of electrode, avoid the flashover problem of transformer.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Reference numeral meaning is as follows：1. electrode；2. hydraulic cylinder；3. hydraulic pump；4. transformer；5. ammeter；6. voltmeter；
7. servo valve control device；8. decline servo valve；9. rise servo valve；10. the first signal conditioner；11. second signal adjuster.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1, inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting, including transformer 4, hydraulic cylinder 2
And the electrode 1 in electric furnace is arranged on, transformer 4 is equipped with voltmeter 6, and transformer 4 is also associated with ammeter 5, and ammeter 5 connects
Electrode 1 is connected to, the upper end of electrode 1 is connect with the piston rod of hydraulic cylinder 2, and the cylinder body top of hydraulic cylinder 2 is connected with decline servo valve
8, decline servo valve 8 and be connected with hydraulic pump 3, hydraulic pump 3, which is connected with, rises servo valve 9, rises the cylinder of servo valve 9 and hydraulic cylinder 2
Body lower part connects, and rises servo valve 9, decline servo valve 8, ammeter 5 and voltmeter 6 and be respectively connected with servo valve control device 7,
The first signal conditioner 10 is equipped between servo valve control device 7 and decline servo valve 8, servo valve control device 7 is with rising servo valve 9
Between be equipped with second signal adjuster 11.First signal conditioner 10 for output signal be decreased to 80% signal conditioner, second
Signal conditioner 11 increases to 120% signal conditioner for output signal.
During work, hydraulic pump 3 is run, and ensures tubing pressure, and servo valve control device 7, which exports, opens decline servo valve 8, liquid
End pressure increases band moving electrode 1 and declines on cylinder pressure 2, and under the action of the first signal conditioner 10, electrode 1 is with normal speed
80% declines, and electrode 1 is close to after steel scrap surface, 4 energization work of transformer, 1 arcing of electrode, when electrode 1 and steel scrap surface distance
After shortening, electric arc shortens, and 5 numerical value of ammeter increase, 6 numerical value of voltmeter becomes smaller, and servo valve control device 7 is judged on electrode 1 at this time
It rises, closes and decline servo valve 8, open and rise servo valve 9,2 times end pressures of hydraulic cylinder increase band moving electrode 1 and rise, in the second letter
Rise under the action of number adjuster 11 with the 120% of normal speed, electrode 1 with after steel scrap surfaces apart distance, 5 numerical value of ammeter
Become smaller, 5 numerical value of voltmeter increase, servo valve control device 7 judges that electrode 1 declines, and performs up and down process repeatedly.
Claims (2)
1. inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting, including transformer（4）, hydraulic cylinder（2）And setting
Electrode in electric furnace（1）, transformer（4）It is equipped with voltmeter（6）, transformer（4）It is also associated with ammeter（5）, ammeter
（5）It is connected with electrode（1）, electrode（1）Upper end and hydraulic cylinder（2）Piston rod connection, it is characterized in that：Hydraulic cylinder（2）Cylinder
Body top is connected with decline servo valve（8）, decline servo valve（8）It is connected with hydraulic pump（3）, hydraulic pump（3）Rising is connected with to watch
Take valve（9）, rise servo valve（9）With hydraulic cylinder（2）Inferior part of the cylinder block connection, and rise servo valve（9）, decline servo valve（8）、
Ammeter（5）And voltmeter（6）It is respectively connected with servo valve control device（7）, servo valve control device（7）With declining servo valve（8）
Between be equipped with the first signal conditioner（10）, servo valve control device（7）With rising servo valve（9）Between be equipped with second signal adjust
Device（11）.
2. inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting according to claim 1, it is characterized in that：It is described
First signal conditioner（10）It is decreased to 80% signal conditioner, second signal adjuster for output signal（11）Believe for output
Number increase to 120% signal conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617517.0U CN207475190U (en) | 2017-11-28 | 2017-11-28 | Inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617517.0U CN207475190U (en) | 2017-11-28 | 2017-11-28 | Inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207475190U true CN207475190U (en) | 2018-06-08 |
Family
ID=62258827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721617517.0U Expired - Fee Related CN207475190U (en) | 2017-11-28 | 2017-11-28 | Inhibit the device of harmonic wave during a kind of stainless steel electric furnace smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207475190U (en) |
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2017
- 2017-11-28 CN CN201721617517.0U patent/CN207475190U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20181128 |