CN211256035U - Real-time state monitoring equipment for well type annealing furnace - Google Patents
Real-time state monitoring equipment for well type annealing furnace Download PDFInfo
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- CN211256035U CN211256035U CN201922307511.9U CN201922307511U CN211256035U CN 211256035 U CN211256035 U CN 211256035U CN 201922307511 U CN201922307511 U CN 201922307511U CN 211256035 U CN211256035 U CN 211256035U
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Abstract
A real-time state monitoring device for a well-type annealing furnace comprises an electric control cabinet, wherein the electric control cabinet is connected with a plurality of K-type thermocouples in the well-type annealing furnace through three-phase cables, a sealing mechanism is arranged on the annealing furnace, a power sensor, a PID temperature controller and a temperature acquisition module are installed in the electric control cabinet, an alarm is arranged at the upper end of the electric control cabinet, the K-type thermocouples are connected with the temperature acquisition module through signal lines, and the K-type thermocouples are connected with the PID temperature controller through the three-phase cables; each phase line on the three-phase cable at the main input end of the electric control cabinet is provided with a current transformer, the current transformer is connected with the power sensor through a signal line, and the current transformer is connected with the multi-path combined three-phase electric measuring terminal through an insulated wire. But this scheme real-time supervision temperature, but when the high temperature automatic alarm.
Description
Technical Field
The utility model relates to a stainless steel hot rolling belted steel processing technology field especially relates to a well formula annealing stove real-time status monitoring facilities.
Background
The aluminum wire has the characteristics of acid and alkali resistance, good toughness, good strength, atmospheric corrosion resistance, chemical corrosion resistance, high-temperature corrosion resistance, good electric and thermal conductivity and the like after annealing treatment. The cable can be widely applied to the aspects of cable television coaxial cables, high-capacity communication network signal cables, control signal cables, shielding wires and the like, and is applied to variable environments, bridges, ocean facilities, chemical equipment, oil refining equipment, ships and the like.
The annealing heat treatment temperature of the aluminum wire is generally below 500 ℃ (Yinliping, complete annealing process of aluminum wire, 1989(3): 66-68), so that a large-scale pit type low-temperature resistance furnace is adopted, and the large-scale production can be realized. And heating the workpiece in the hearth to a target annealing process temperature in an electric heating mode, preserving the heat for a period of time, cooling the workpiece along with the furnace for a certain period of time, and taking out the workpiece for air cooling.
At present, the electric control cabinet is mostly adopted in the industry to carry out electric energy conversion, distribution and control on the resistance furnace equipment. The electric control system is mainly composed of a main circuit switch, a voltage regulating mechanism and a current-limiting fusing loop. The main circuit switch mainly controls the heating power current and plays a role in switching on and off heating. The pressure regulating mechanism is mainly controlled by a contactor position type or a solid relay to regulate pressure so as to maintain the temperature of the hearth.
The control loop of the system is simple, the maintenance is facilitated, the economical efficiency is good, but in the process of mass production, because the electric control cabinet can only display the temperature of each area in the current hearth, an operator can manually control the heat preservation and cooling time of wires with different specifications in the annealing furnace only by experience according to data displayed by an instrument, the manual control is not easy to ensure the accuracy of the switching of the operation process, the energy waste is easy to cause, the quality of the wires in each task is different after annealing, and even the technological requirement cannot be met.
The heat preservation process is the process that a contactor, a relay and a temperature controller control a heating circuit to be disconnected, and as a resistance furnace control system has large inertia, time lag and nonlinearity (allowable wave, application of an intelligent temperature controller in a vacuum resistance furnace [ J ] science and technology field, 2019(05): 101-plus 103.), a certain hysteresis phenomenon exists in the temperature change of a hearth in the heat preservation process, so that the actual temperature floats up and down at the target temperature. Because the temperature deviation even reaches +/-10 ℃ due to the influence of factors such as voltage fluctuation, environmental temperature and the like, the annealing quality is greatly influenced, and therefore, a temperature monitoring and alarming system of the annealing furnace is very necessary.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model provides a well type annealing stove real-time condition monitoring facilities can guarantee annealing quality.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a real-time state monitoring device for a well-type annealing furnace comprises an electric control cabinet, wherein the electric control cabinet is connected with a plurality of K-type thermocouples in the well-type annealing furnace through three-phase cables, a sealing mechanism is arranged on the annealing furnace, a power sensor, a PID temperature controller and a temperature acquisition module are installed in the electric control cabinet, an alarm is arranged at the upper end of the electric control cabinet, the K-type thermocouples are connected with the temperature acquisition module through signal lines, and the K-type thermocouples are connected with the PID temperature controller through the three-phase cables; each phase line on a three-phase cable at the main input end of the electric control cabinet is provided with a current transformer, the current transformer is connected with the power sensor through a signal line, the current transformer is connected with a multi-path combined three-phase electric measuring terminal through an insulated wire, and the multi-path combined three-phase electric measuring terminal and the temperature acquisition module are connected with an RS 485-to-USB module through an RS485 communication cable; the PID temperature controller, the power sensor and the alarm are connected with the RS 485-to-USB module through insulated wires, and the RS 485-to-USB module is connected with an upper computer through a USB data line; the annealing furnace comprises a cavity, the K-type thermocouple is arranged in the cavity, an electric heating wire is further arranged in the cavity, and the electric heating wire is connected with the PID temperature controller through an insulated wire.
In the technical scheme, the current signal of each phase of electricity of the three-phase cable obtained by induction is transmitted to the power sensor through the signal wire by the current transformer, the acquired voltage signal without an ideal point, the current signal and the frequency signal are transmitted to the upper computer through the RS 485-USB conversion module by the power sensor, a power load curve for judging the annealing state in the furnace is generated and displayed, the temperature signal of the corresponding K-type thermocouple obtained by detection is transmitted to the upper computer through the RS 485-USB conversion module by the temperature acquisition module, the temperature signal of the corresponding electric heating wire obtained by detection is transmitted to the upper computer through the RS 485-USB conversion module by the PID temperature controller for keeping the annealing temperature in the furnace, an anaerobic space can be formed in the furnace by the sealing mechanism, and the phenomenon of iron wire oxidation can not occur.
As optimization, the upper computer comprises a monitoring computer host and a display screen, the monitoring computer host is connected with the display screen through a video cable, and the monitoring computer host is connected with the RS 485-USB module through a USB data cable.
Therefore, the display screen can display the monitoring data of the monitoring computer host, and is convenient for the staff to watch.
Preferably, the lower end of the alarm is provided with an inner thread groove, and the inner thread of the inner thread groove is connected with a vacuum chuck.
Thus, the fixing of the alarm can be ensured.
And as optimization, the device further comprises a fan, and the fan is connected with the PID temperature controller through an insulated wire.
Therefore, the processed workpiece can be taken out after being cooled in the furnace for a certain time and then can be air-cooled by the fan.
Preferably, the sealing mechanism comprises a furnace cover arranged at the mouth of the annealing furnace, an air outlet pipeline and a valve, a through hole is formed in the furnace cover, the lower end of the air outlet pipeline penetrates through the through hole and enters the inside of the annealing furnace through the through hole, and the valve is arranged at the tail end of the air outlet pipeline.
Therefore, when the furnace cover is used, a workpiece is placed into the annealing furnace by opening the furnace cover, alcohol is sprayed into the furnace, then the furnace cover is covered and the valve is opened, the PID temperature controller is controlled to open the electric heating wire after the furnace cover is covered, the electric heating wire is enabled to generate heat, the alcohol can be combusted in the heating process of the electric heating wire and burn oxygen in the furnace, expanded gas after combustion is discharged from the gas outlet pipeline, the valve is closed after the gas is discharged, an oxygen-free space is formed in the furnace, and therefore the phenomenon of iron wire oxidation cannot occur.
Preferably, a sealing ring is arranged at the junction of the air outlet pipeline and the through hole.
In this way, the entry of outside air into the cavity can be prevented.
Preferably, the air outlet pipeline is a high-temperature-resistant hose.
Thus, the service life of the air outlet pipeline can be longer.
Preferably, the surface of the furnace cover is provided with a handle.
Thus, the furnace cover is convenient to open.
The utility model has the advantages that:
1. the utility model can monitor the temperature in real time, and can automatically alarm when the temperature is too high;
2. the utility model transmits the current and voltage signals of the well-type annealing furnace to the monitoring computer host through the power sensor, and generates the power load curve for judging the annealing state in the furnace so as to ensure the annealing quality; the annealing state is judged by the electric load curve, and the monitoring is simple and easy to operate; meanwhile, the temperature signal of the electric heating wire of the pit furnace is transmitted to a monitoring computer host through a temperature acquisition module, and the electric heating wire is controlled through a PID temperature controller and is used for keeping the annealing temperature in the furnace consistent so as to ensure the annealing quality;
3. the utility model discloses an inside anaerobic environment that presents of furnace body of annealing stove makes the iron wire can not take place oxidation phenomenon because of contacting oxygen when the work piece.
Drawings
FIG. 1 is a schematic structural view of a real-time status monitoring device for an annealing furnace according to the present invention;
FIG. 2 is an enlarged schematic view of A in FIG. 1;
FIG. 3 is a flow chart showing the operation state judgment of the annealing furnace real-time state monitoring device;
FIG. 4 is a flow chart of the automatic control of the annealing furnace real-time status monitoring device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower, front, rear, left, right" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself. The fixed connection in this embodiment may be understood as being fixed by welding, or may be fixed by bolts or screws.
A real-time state monitoring device for a well type annealing furnace comprises an electric control cabinet 3, wherein the electric control cabinet 3 is connected with a plurality of K-type thermocouples 2 in the well type annealing furnace 1 through three-phase cables, a power sensor 5, a PID temperature controller 6 and a temperature acquisition module 4 are installed in the electric control cabinet 3, an alarm 8 is arranged at the upper end of the electric control cabinet, the K-type thermocouples 2 are connected with the temperature acquisition module 4 through signal lines, and the K-type thermocouples 2 are connected with the PID temperature controller 6 through three-phase cables; each phase line on a three-phase cable at the main input end of the electric control cabinet 3 is provided with a current transformer 7, the current transformer 7 is connected with the power sensor 5 through a signal line, the current transformer 7 is connected with a multi-path combined three-phase electric measuring terminal 9 through an insulated wire, and the multi-path combined three-phase electric measuring terminal 9 and the temperature acquisition module 4 are connected with an RS 485-to-USB module 10 through an RS485 communication cable; the PID temperature controller 6, the power sensor 5 and the alarm 8 are connected with the RS 485-to-USB module 10 through insulated wires, and the RS 485-to-USB module 10 is connected with an upper computer 11 through a USB data line; annealing stove 1 includes cavity 12, K type thermocouple 2 sets up in the cavity 12, still be equipped with electric heating wire in the cavity 12, electric heating wire with PID temperature controller 6 is through insulating wire connection, the fire door department of annealing stove 1 is equipped with bell 13, pipeline 14 and valve 15 of giving vent to anger be equipped with a through-hole (not sign in the figure) on the bell 13, the lower extreme of pipeline 14 of giving vent to anger passes the through-hole is passed through the through-hole gets into the inside of annealing stove 1, valve 15 is installed the tail end of pipeline 14 of giving vent to anger. The valve adopts a gas one-way valve, so that the gas in the annealing furnace can only flow out and not flow in.
Thus, the current transformer transmits the current signal of each phase of electricity of the three-phase cable obtained by induction to the power sensor through a signal wire, the power sensor transmits the acquired voltage signal, current signal and frequency signal without points to the upper computer through the RS 485-USB module to generate and display an electricity load curve for judging the annealing state in the furnace, the temperature acquisition module transmits the detected temperature signal of the corresponding K-type thermocouple to the upper computer through the RS 485-USB module, the PID temperature controller transmits the detected temperature signal of the corresponding electric heating wire to the upper computer through the RS 485-USB module for keeping the annealing temperature in the furnace, when in use, the furnace cover is opened to put the workpiece into the annealing furnace, alcohol is sprayed into the furnace cover, then the furnace cover is closed and the valve is opened, and the PID temperature controller is controlled to open the electric heating wire after the furnace cover is closed to heat the electric heating wire, the alcohol in the heating process of the electric heating wire can be combusted and burns oxygen in the furnace, the expanded gas after combustion is discharged from the gas outlet pipeline, and the valve is closed after the gas is discharged, so that an oxygen-free space is formed in the furnace, and the phenomenon of iron wire oxidation can not occur.
In the embodiment, three heating furnace areas are shared, current transformers are respectively installed on a three-phase cable which is input into an electric control cabinet and the three-phase cables of the three heating furnace areas, a K-type electric heating head is installed in each heating furnace of each heating furnace, a temperature acquisition module adopts an HC-2083 circuit thermocouple temperature acquisition module, a multi-path combined three-phase electric measurement terminal adopts an HC-33D6L type multi-path combined three-phase electric measurement electric meter, the K-type thermocouple can select specific models according to actual conditions, the selected models are all conventional models on the market, and an RS 485-to-USB module can refer to RS-485 bus-to-USB interface micro development.
In this embodiment, the host computer 11 includes monitoring computer 11a and display screen 11b, connect through the video line between monitoring computer 11a and the display screen 11b, monitoring computer 11a with connect through the USB data line between the RS485 changes the USB module 10.
Therefore, the display screen can display the monitoring data of the monitoring computer host, and is convenient for the staff to watch.
In this embodiment, the lower end of the alarm 8 is provided with an inner thread groove, and the inner thread of the inner thread groove is connected with a vacuum chuck 16.
Thus, the fixing of the alarm can be ensured.
In this embodiment, a sealing ring is disposed at a junction between the air outlet pipe 14 and the through hole.
In this way, the entry of outside air into the cavity can be prevented.
In this embodiment, the air outlet pipe 14 is a high temperature resistant hose.
Thus, the service life of the air outlet pipeline can be longer.
In this embodiment, the air conditioner further comprises a fan 17, and the fan 17 is connected with the PID temperature controller 6 through an insulated wire.
Therefore, the processed workpiece can be taken out after being cooled in the furnace for a certain time and then can be air-cooled by the fan.
In this embodiment, a handle 18 is disposed on the surface of the furnace cover 13.
Thus, the furnace cover is convenient to open.
The utility model discloses can realize following purpose:
real-time condition monitoring
The upper computer analyzes and calculates the collected current, voltage, power and temperature information through a set of compiled real-time state monitoring and intelligent control system of the annealing furnace (the compiled real-time state monitoring and intelligent control system of the annealing furnace collects the current, voltage, power and temperature information, which is the prior art and is not repeated here), so as to obtain the real-time energy consumption information and the running state information of the annealing furnace, wherein the energy consumption information comprises total input power, input power of each region, output power (the sum of the powers of three heating furnace regions), instantaneous efficiency (the output power is compared with the upper input power), input energy (the total input energy processed for one shift), output energy (the total output energy of the three furnace regions for one shift), and energy utilization rate (the output energy is compared with the upper input energy). The operation state information includes the annealing furnace state (heating, heat preservation, early warning, alarm), operation time, heating time, heat preservation time, and effective operation rate, the operation state is judged by the collected power and temperature information, and the judgment process is shown in FIG. 3, wherein T1For a set lower limit value of the holding temperature, ThFor a set upper limit value of the holding temperature, TwSetting I as a state judgment parameter for the set alarm temperature, initializing the system to be 0 when starting up, setting I to be 1 when reaching a heat preservation state, and setting I to be 0 after the set cooling time when monitoring a cooling state.
Intelligent control
When the heat preservation temperature is reached, heat preservation control needs to be carried out on the heat preservation process, and the heat preservation control is realized by controlling a thermal resistance wire through a PID controller. Before the annealing furnace works, the heat preservation temperature of different annealing wires is set as the preset temperature value of the PID controller, the control mode of the developed annealing furnace real-time monitoring and intelligent control system has two modes of manual control and automatic control, and under the manual control mode, the opening and closing of the annealing furnace door, each heating furnace area and each heating furnace area PID controller and the starting and stopping of alarming are realized by clicking corresponding function buttons. Under the automatic control mode, acquire annealing stove furnace district temperature and judge the running state in real time through K type electric heat couple, when reaching the heat preservation temperature automatically open the PID controller through program control and carry out PID control to annealing stove heat preservation stage, realize keeping warm, if the temperature reaches warning temperature value then reports to the police, when reaching to set for the heat preservation duration then automatically closed PID controller and stop heating, close the annealing stove, make the annealing stove automatically enter the cooling stage, realize the heat preservation intelligent control of annealing stove. The control flow is shown in fig. 4.
Historical queries
And establishing a task management, parameter setting, energy consumption information, running state information and real-time temperature information database, inputting the detailed processing task information and parameter setting information of the current shift into a developed annealing furnace real-time monitoring and intelligent control system before each annealing task, and storing the energy consumption information, running state information and real-time temperature information of the current shift into the database after the annealing furnace finishes working, so that the subsequent historical query is facilitated.
Energy saving and wire quality improvement
The annealing furnace automatically enters a heat preservation stage when reaching the heat preservation temperature through heat preservation intelligent control, automatically stops heating after reaching the set heat preservation time length and enters a cooling stage, shortens the operation time of the annealing furnace to the minimum, is favorable for energy conservation and emission reduction of the annealing furnace, controls the heat preservation temperature and the heat preservation time length accurately and stably, and is favorable for improving the quality of the annealed wires.
It should be noted that: the present invention may be embodied in the form of software for real-time monitoring of the condition of an annealing furnace, but the software used is the software most commonly used by those skilled in the art and is not intended to be protected by the claims.
Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.
Claims (8)
1. The utility model provides a well formula annealing stove real-time condition monitoring facilities which characterized in that: the annealing furnace comprises an electric control cabinet (3), wherein the electric control cabinet (3) is connected with a plurality of K-type electric thermocouples (2) in a well-type annealing furnace (1) through three-phase cables, a sealing mechanism is arranged on the annealing furnace (1), a power sensor (5), a PID temperature controller (6) and a temperature acquisition module (4) are installed in the electric control cabinet (3), an alarm (8) is arranged at the upper end of the electric control cabinet, the K-type electric thermocouples (2) are connected with the temperature acquisition module (4) through signal lines, and the K-type electric thermocouples (2) are connected with the PID temperature controller (6) through three-phase cables; each phase line on a three-phase cable at the main input end of the electric control cabinet (3) is provided with a current transformer (7), the current transformer (7) is connected with the power sensor (5) through a signal line, the current transformer (7) is connected with a multi-path combined three-phase electric measuring terminal (9) through an insulated wire, and the multi-path combined three-phase electric measuring terminal (9) and the temperature acquisition module (4) are connected with an RS 485-to-USB module (10) through an RS485 communication cable; the PID temperature controller (6), the power sensor (5) and the alarm (8) are connected with the RS 485-to-USB module (10) through insulated wires, and the RS 485-to-USB module (10) is connected with an upper computer (11) through a USB data line; the annealing furnace (1) comprises a cavity (12), the K-type thermocouple (2) is arranged in the cavity (12), an electric heating wire is further arranged in the cavity (12), and the electric heating wire is connected with the PID temperature controller (6) through an insulated wire.
2. The real-time state monitoring equipment for the well type annealing furnace according to claim 1, wherein the upper computer (11) comprises a monitoring computer host (11a) and a display screen (11b), the monitoring computer host (11a) and the display screen (11b) are connected through a video line, and the monitoring computer host (11a) is connected with the RS 485-to-USB module (10) through a USB data line.
3. The real-time state monitoring equipment for the well-type annealing furnace according to claim 1, wherein the lower end of the alarm (8) is provided with an inner thread groove, and the inner thread of the inner thread groove is connected with a vacuum chuck (16).
4. The real-time state monitoring equipment of the well annealing furnace according to the claim 1, characterized by further comprising a fan (17), wherein the fan (17) is connected with the PID temperature controller (6) through an insulated wire.
5. The real-time state monitoring equipment for the well-type annealing furnace according to claim 1, characterized in that the sealing mechanism comprises a furnace cover (13) arranged at the mouth of the annealing furnace (1), an air outlet pipe (14) and a valve (15), a through hole is arranged on the furnace cover (13), the lower end of the air outlet pipe (14) passes through the through hole and enters the inside of the annealing furnace (1) through the through hole, and the valve (15) is arranged at the tail end of the air outlet pipe (14).
6. The real-time state monitoring equipment for the well-type annealing furnace according to claim 5, characterized in that a sealing ring is arranged at the junction of the gas outlet pipeline (14) and the through hole.
7. The real-time state monitoring equipment of the well annealing furnace according to claim 5, characterized in that the gas outlet pipeline (14) is a high temperature resistant hose.
8. A real-time state monitoring device for a well-type annealing furnace according to claim 5, characterized in that the surface of the furnace cover (13) is provided with a handle (18).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922307511.9U CN211256035U (en) | 2019-12-20 | 2019-12-20 | Real-time state monitoring equipment for well type annealing furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922307511.9U CN211256035U (en) | 2019-12-20 | 2019-12-20 | Real-time state monitoring equipment for well type annealing furnace |
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| CN201922307511.9U Active CN211256035U (en) | 2019-12-20 | 2019-12-20 | Real-time state monitoring equipment for well type annealing furnace |
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