CN110986603A - Dry burning prevention device for heating electric furnace of air separation device and control method of dry burning prevention device - Google Patents
Dry burning prevention device for heating electric furnace of air separation device and control method of dry burning prevention device Download PDFInfo
- Publication number
- CN110986603A CN110986603A CN201911205828.XA CN201911205828A CN110986603A CN 110986603 A CN110986603 A CN 110986603A CN 201911205828 A CN201911205828 A CN 201911205828A CN 110986603 A CN110986603 A CN 110986603A
- Authority
- CN
- China
- Prior art keywords
- electric furnace
- heating
- temperature measuring
- dry burning
- furnace body
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/04—Arrangements of indicators or alarms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D2021/0057—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects
- F27D2021/0071—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects against explosions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses an anti-dry heating device of a heating electric furnace of an air separation device, which comprises an electric furnace body and a silicon controlled power regulator, the silicon controlled rectifier power regulator is arranged on the outer wall of the electric furnace body, a plurality of heating rods are arranged in the electric furnace body, the heating rods penetrate through a fixed groove arranged at the upper end of the electric furnace body and are inserted into the electric furnace body, each heating rod is connected with a silicon controlled power regulator through a cable, the upper end and the lower end of the same side of the electric furnace body are respectively and correspondingly provided with an air inlet and an air outlet, a temperature measuring port I and a temperature measuring port II are respectively arranged at the air inlet and the air outlet, the electric furnace heating device is simple in structure, and effectively prevents the electric furnace from heating under the condition that the electric furnace is not ventilated when the thyristor regulator fails.
Description
Technical Field
The invention relates to an air separation device heating electric furnace dry-burning prevention device and a control method thereof.
Background
When a silicon controlled rectifier fault occurs in a molecular sieve system heating electric furnace which is one of key devices for air separation plant production, the electric furnace is heated under the condition that the electric furnace is not ventilated, an electric furnace heating pipe is burnt, the electric furnace body is overheated, and scalding hazards are brought to passing personnel. The service effect and the service life of the electric furnace can be influenced if the electric furnace is used for a long time, and the operation safety of the electric furnace is seriously influenced. The heating electric furnace can be ignited and exploded because the heating electric furnace is not ventilated and dried for a long time.
Disclosure of Invention
The invention aims to solve the technical problem that the air separation device heating electric furnace dry-burning prevention device and the control method thereof effectively prevent the electric furnace heating from being carried out under the condition that the electric furnace is not ventilated when the silicon controlled regulator of the heating electric furnace fails, so that the electric furnace heating pipe is burnt, the electric furnace body is overheated, and the scalding damage is brought to passing personnel.
The technical scheme for solving the technical problems is as follows: an air separation plant heating electric furnace dry burning prevention device comprises an electric furnace body and a silicon controlled power regulator, wherein the silicon controlled power regulator is arranged on the outer wall of the electric furnace body, a plurality of heating rods are arranged in the electric furnace body, the heating rods penetrate through a fixing groove formed in the upper end of the electric furnace body and are inserted in the electric furnace body, the whole electric furnace body is distributed annularly, each heating rod is connected with the silicon controlled power regulator through a cable, an air inlet and an air outlet are correspondingly arranged on the upper end and the lower end of the same side of the electric furnace body respectively, the air inlet is connected with an air inlet pipeline, the air outlet is connected with an air outlet pipeline, an electromagnetic valve is arranged on the inlet pipeline, a temperature measuring port I and a temperature measuring port II are respectively arranged at the air inlet and the air outlet, temperature measuring sleeves are arranged on the two temperature measuring ports, and a temperature measuring resistor I and a temperature measuring resistor, and the temperature measuring resistor I and the temperature measuring resistor II are respectively connected with a temperature transmitter.
The invention further defines the scheme:
the power regulating device comprises a power regulating circuit, a temperature measuring resistor I, a temperature measuring resistor II and a temperature transmitter, wherein the power regulating circuit is connected with the power regulating circuit through a signal.
The temperature measuring sleeve is welded in the temperature measuring port.
The temperature measuring resistor is a platinum resistor.
The number of the heating rods is at least 50, and each heating rod has 8kW of power.
The heating rod adopted in the invention is an electric heater plant of Zhejiang Haining, the model number of the electric heater plant is 1400C, and the temperature measuring resistor adopts a German imported thin film platinum thermal resistance element.
The invention also provides a control method of the heating electric furnace dry-burning prevention device of the air separation device, which comprises the following steps:
firstly, a temperature measuring resistor I and a temperature measuring resistor II are respectively arranged on an inlet and an outlet of the on-site heating electric furnace;
secondly, mounting a monitoring point in a power regulating cabinet of the heating electric furnace, and taking out an operation signal of a silicon controlled rectifier of the power regulating cabinet of the electric furnace;
and (III) connecting temperature measurement signals of a first temperature measurement resistor and a second temperature measurement resistor which are arranged at the inlet and the outlet of the heating electric furnace and a silicon controlled operation signal to a DCS control system, participating in logic configuration, exciting screen flash alarm, completing the requirement of comprehensively monitoring the dry burning prevention of the electric furnace, and connecting a DO point out for flash alarm of equipment according to the requirement at the later stage, wherein the specific logic configuration is that the temperature measurement of the first temperature measurement resistor is more than 300 ℃ and the electric furnace does not work, alarm is output to prompt that the dry burning phenomenon exists and needs to be processed by an operator, and the temperature measurement of the first temperature measurement resistor is more than 300 ℃ and the electric furnace works, and the program judges the normal situation.
The invention has the beneficial effects that: the electric furnace dry burning monitoring and alarming device is simple in structure, monitors and alarms the dry burning condition of the electric heating furnace, can quickly master whether the electric furnace has the dry burning condition when the electric furnace is stopped, can effectively and safely protect equipment and inspection personnel of the electric furnace, and can effectively prevent the electric furnace heating from being carried out under the condition that the electric furnace is not ventilated when the silicon controlled regulator of the electric heating furnace fails, burn out an electric furnace heating pipe, cause overheating of an electric furnace body, bring scalding damage to the passing personnel, influence the use effect and the service life of the electric furnace, and cause the electric heating furnace to be ignited and exploded due to long-time non-ventilation dry burning, thereby seriously influencing the operation safety of the electric furnace;
according to the invention, the temperature measuring platinum resistors are arranged at the inlet and the outlet of the heating electric furnace, so that the temperature condition of the electric furnace can be monitored, the abnormal temperature condition of the non-working electric furnace can be found at the first time, emergency treatment measures are made to ensure the safety of electric furnace equipment, and the platinum thermal resistor adopts a German imported thin film platinum thermal resistor element, so that the deviation is extremely small, and the electric performance is stable; the vibration resistance and the reliability are high, and meanwhile, the precision and the sensitivity are high, the stability is good, and the service life of a product is long; the silicon controlled rectifier power regulator is connected with the DCS control system through signals, the running condition of the silicon controlled rectifier of the electric furnace power regulating cabinet can be monitored, the two temperature measuring resistors are respectively connected with the temperature transmitters, and when the temperature difference of the two temperature transmitters exceeds a set value, an alarm can be given to the user to prompt the worker of a fault.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
Example 1
The embodiment provides an air separation plant heating electric furnace dry burning prevention device, the structure is shown in figure 1, and the device comprises an electric furnace body 1, a silicon controlled power regulator 2 and a DCS control system, the silicon controlled power regulator 2 is arranged on the outer wall of the electric furnace body 1, the silicon controlled power regulator is connected with the DCS control system through signal transmission, 78 heating rods 3 with the power of 8kW are arranged in the electric furnace body, the heating rods penetrate through a fixing groove arranged at the upper end of the electric furnace body and are inserted in the electric furnace body, the whole body is distributed annularly, each heating rod is connected with the silicon controlled power regulator through a cable, an air inlet and an air outlet are respectively and correspondingly arranged at the upper end and the lower end of the same side of the electric furnace body, the air inlet is connected with an air inlet pipeline 4, the air outlet is connected with an air outlet pipeline 5, an electromagnetic valve 6 is arranged on, all install temperature measurement sleeve pipe 7 on two temperature measurement mouths, the temperature measurement sleeve pipe welding is in the temperature measurement mouth to correspondingly install temperature measurement resistance 8 and temperature measurement resistance two 9 on the intraoral temperature measurement sleeve pipe of temperature measurement that corresponds, temperature measurement resistance one and temperature measurement resistance two are connected with temperature transmitter 10 respectively, and temperature measurement resistance one and temperature measurement resistance two all adopt platinum resistance, and temperature measurement resistance one, temperature measurement resistance two and solenoid valve all pass through signal connection DCS control system.
The embodiment also provides a control method of the dry-burning prevention device of the heating electric furnace of the air separation device, which specifically comprises the following steps:
firstly, a temperature measuring resistor I and a temperature measuring resistor II are respectively arranged on an inlet and an outlet of the on-site heating electric furnace;
secondly, mounting a monitoring point in a power regulating cabinet of the heating electric furnace, and taking out an operation signal of a silicon controlled rectifier of the power regulating cabinet of the electric furnace;
and (III) connecting temperature measurement signals of a first temperature measurement resistor and a second temperature measurement resistor which are arranged at the inlet and the outlet of the heating electric furnace and a silicon controlled operation signal to a DCS control system, participating in logic configuration, exciting screen flash alarm, completing the requirement of comprehensively monitoring the dry burning prevention of the electric furnace, and connecting a DO point out for flash alarm of equipment according to the requirement at the later stage, wherein the specific logic configuration is that the temperature measurement of the first temperature measurement resistor is more than 300 ℃ and the electric furnace does not work, alarm is output to prompt that the dry burning phenomenon exists and needs to be processed by an operator, and the temperature measurement of the first temperature measurement resistor is more than 300 ℃ and the electric furnace works, and the program judges the normal situation.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. An air separation plant heating electric furnace dry burning prevention device comprises an electric furnace body and a silicon controlled power regulator, wherein the silicon controlled power regulator is arranged on the outer wall of the electric furnace body, and the air separation plant heating electric furnace dry burning prevention device is characterized in that a plurality of heating rods are arranged in the electric furnace body, penetrate through fixing grooves formed in the upper end of the electric furnace body and are inserted in the electric furnace body, the whole electric furnace body is distributed annularly, each heating rod is connected with the silicon controlled power regulator through a cable, an air inlet and an air outlet are correspondingly formed in the upper end and the lower end of the same side of the electric furnace body respectively, the air inlet is connected with an air inlet pipeline, the air outlet is connected with an air outlet pipeline, an electromagnetic valve is arranged on the air inlet pipeline, a temperature measuring port I and a temperature measuring port II are respectively arranged at the air inlet and the air outlet, temperature measuring sleeves are respectively arranged on the two temperature measuring ports, and, the temperature measuring resistor I and the temperature measuring resistor II are respectively connected with a temperature transmitter through electric wires.
2. The air separation plant heating electric furnace dry burning prevention device of claim 1, characterized in that: the intelligent power control system is characterized by further comprising a DCS control system, and the silicon controlled rectifier power regulator, the electromagnetic valve, the temperature measuring resistor I, the temperature measuring resistor II and the temperature transmitter are all connected with the DCS control system through signals.
3. The air separation plant heating electric furnace dry burning prevention device of claim 1, characterized in that: the temperature measuring sleeve is welded in the temperature measuring port.
4. The air separation plant heating electric furnace dry burning prevention device of claim 1, characterized in that: the temperature measuring resistor is a platinum resistor.
5. The air separation plant heating electric furnace dry burning prevention device of claim 1, characterized in that: the number of the heating rods is at least 50, and each heating rod has 8kW of power.
6. The method for controlling the dry-heating preventing device of the heating electric furnace of the air separation plant according to any one of claims 1 to 5, characterized in that: the method specifically comprises the following steps:
firstly, a temperature measuring resistor I and a temperature measuring resistor II are respectively arranged on an inlet and an outlet of the on-site heating electric furnace;
secondly, mounting a monitoring point in a power regulating cabinet of the heating electric furnace, and taking out an operation signal of a silicon controlled rectifier of the power regulating cabinet of the electric furnace;
and (III) connecting temperature measurement signals of a first temperature measurement resistor and a second temperature measurement resistor which are arranged at the inlet and the outlet of the heating electric furnace and a silicon controlled operation signal to a DCS control system, participating in logic configuration, exciting screen flash alarm, completing the requirement of comprehensively monitoring the dry burning prevention of the electric furnace, and connecting a DO point out for flash alarm of equipment according to the requirement at the later stage, wherein the specific logic configuration is that the temperature measurement of the first temperature measurement resistor is more than 300 ℃ and the electric furnace does not work, alarm is output to prompt that the dry burning phenomenon exists and needs to be processed by an operator, and the temperature measurement of the first temperature measurement resistor is more than 300 ℃ and the electric furnace works, and the program judges the normal situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911205828.XA CN110986603A (en) | 2019-11-29 | 2019-11-29 | Dry burning prevention device for heating electric furnace of air separation device and control method of dry burning prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911205828.XA CN110986603A (en) | 2019-11-29 | 2019-11-29 | Dry burning prevention device for heating electric furnace of air separation device and control method of dry burning prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110986603A true CN110986603A (en) | 2020-04-10 |
Family
ID=70088706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911205828.XA Pending CN110986603A (en) | 2019-11-29 | 2019-11-29 | Dry burning prevention device for heating electric furnace of air separation device and control method of dry burning prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110986603A (en) |
-
2019
- 2019-11-29 CN CN201911205828.XA patent/CN110986603A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103744316B (en) | A kind of based on thermometric control system protection device and guard method | |
| WO2019206059A1 (en) | Power protection circuit breaker | |
| CN204981164U (en) | Detection apparatus for electric current is revealed to polycrystalline silicon reduction furnace ground connection | |
| CN110986603A (en) | Dry burning prevention device for heating electric furnace of air separation device and control method of dry burning prevention device | |
| CN104155012A (en) | Monitoring system capable of displaying temperature rise of cable head on site | |
| CN105181175A (en) | Switch cabinet temperature measurement control and adjustment device | |
| CN211291066U (en) | Dry burning prevention device for heating electric furnace of air separation device | |
| CN102818956A (en) | Lightning arrester online monitoring system with hot-spot detection | |
| CN107769158A (en) | A kind of safe leakage protection circuit | |
| CN116381555A (en) | Fault monitoring and alarming method for electric tracing system | |
| CN205826159U (en) | A kind of power equipment overtemperature protection automatization alarm control system | |
| CN104269811B (en) | A kind of system for being used for electric power protection and fire-fighting | |
| CN204461609U (en) | The infrared remote wired alarming device of high voltage isolator hot stall | |
| TWI740336B (en) | Warning system | |
| CN103986229B (en) | A kind of high voltage customer work monitoring system and method for being applied to power domain | |
| CN105717954A (en) | Double-thermocouple temperature control system and control method | |
| TWI721633B (en) | Current monitoring method and device of transformer | |
| CN107436585B (en) | The control method of temperature interlock protection | |
| CN210181487U (en) | Temperature control system of wire-making electric heating furnace and wire-making electric heating furnace | |
| CN205608120U (en) | Detect motor protector's device | |
| CN219938844U (en) | Intelligent heat dissipation management control device | |
| KR20010111431A (en) | An accident detector of circuit breaker | |
| KR200314285Y1 (en) | The temp_controller that has the function detecting temperature_change_ratio and the function detecting earth_leakage_ current and the function breaking off from earth_leakage_current. | |
| CN207064294U (en) | The safety in production monitoring device of forming machine | |
| CN211697949U (en) | Independent intelligent electrical fire communication transmission equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |