CN202790808U - Atmosphere furnace automatic overvoltage protective device - Google Patents
Atmosphere furnace automatic overvoltage protective device Download PDFInfo
- Publication number
- CN202790808U CN202790808U CN 201220079129 CN201220079129U CN202790808U CN 202790808 U CN202790808 U CN 202790808U CN 201220079129 CN201220079129 CN 201220079129 CN 201220079129 U CN201220079129 U CN 201220079129U CN 202790808 U CN202790808 U CN 202790808U
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- China
- Prior art keywords
- atmosphere furnace
- protective device
- pressure
- overvoltage protective
- microcontroller
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Abstract
The utility model discloses an atmosphere furnace automatic overvoltage protective device which comprises an electromagnetic valve, a pressure sensor and a microcontroller, wherein the electromagnetic valve, the pressure sensor and the microcontroller are connected through signal wires and are mounted inside the atmosphere furnace; and the microcontroller is a PIC or ARM or the like. The atmosphere furnace automatic overvoltage protective device provided in the utility model is characterized in that the pressure critical point for opening the valve is low, the electromagnetic valve inside the furnace hearth can be set to be opened under any pressure, the electromagnetic valve can be installed at any place inside the furnace, the electromagnetic valve is controlled through the microcontroller and therefore accurate pressure control can be realized, the electromagnetic valve is excellent in air tightness, and a vacuum-pumping function can be realized.
Description
Technical field
The utility model relates to a kind of overvoltage protective device, relates in particular to the automatic overvoltage protective device of a kind of atmosphere furnace.
Background technique
Existing atmosphere furnace overvoltage protective device generally adopts safety valve; to be a kind of mechanical type realize the Safety valve opened by spring and deadweight with safety valve; when gas pressure reached the pressure of setting, Safety valve was opened, when gas pressure be lower than cracking pressure 90% the time Safety valve close.The gas pressure that this safety mechanical valve is opened valve has minimum requirements, as is not less than 0.06Mpa, and general atmosphere furnace does not belong to pressurized container, requires the cavity internal pressure must not be greater than 0.04Mpa.The safety mechanical valve is to close by the deadweight realization of valve body, so valve body is equipped with restriction, must be to erect to install.In addition, pressure accuracy, controllability and poor air-tightness during safety mechanical valve opening and closing valve can't accomplish to vacuumize.
Therefore in order to make the critical reduction of pressure of existing atmosphere furnace overvoltage protective device Open valve, the valve in the burner hearth can be opened under any pressure; Overvoltage protective device can be installed any position in body of heater, and can realize accurate pressure control, and tightness is good, can realize vacuumizing, and is necessary existing atmosphere furnace overvoltage protective device is improved.
The model utility content
Technical problem to be solved in the utility model provides the automatic overvoltage protective device of a kind of atmosphere furnace, and the pressure transition point of Open valve is reduced, and the valve in the burner hearth can be opened under any pressure; Overvoltage protective device can be installed any position in body of heater; By the microprocessor control solenoid valve, realize accurate pressure control; Tightness is good, can realize vacuumizing.
The utility model is to solve the problems of the technologies described above the technological scheme that adopts to provide the automatic overvoltage protective device of a kind of atmosphere furnace; comprise solenoid valve, pressure transducer and microcontroller, described solenoid valve, pressure transducer and microcontroller are mounted in the atmosphere furnace by signaling line.
The automatic overvoltage protective device of above-mentioned atmosphere furnace, wherein, described solenoid valve, pressure transducer and microcontroller are installed in furnace wall one side.
The automatic overvoltage protective device of above-mentioned atmosphere furnace, wherein, described microcontroller is PIC.
The automatic overvoltage protective device of above-mentioned atmosphere furnace, wherein, described microcontroller is ARM.
The utility model contrast prior art has following beneficial effect: the automatic overvoltage protective device of the atmosphere furnace that the utility model provides, and the pressure transition point of Open valve is low, and the solenoid valve that can set in the burner hearth is opened under any pressure; Overvoltage protective device can be installed any position in body of heater; By the microprocessor control solenoid valve, realize accurate pressure control; Tightness is good, can realize vacuumizing.
Description of drawings
Fig. 1 is the automatic overvoltage protective device structural representation of the utility model atmosphere furnace.
Among the figure:
1 solenoid valve, 2 pressure transducers, 3 microcontrollers
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is the automatic overvoltage protective device structural representation of the utility model atmosphere furnace.
See also Fig. 1; the automatic overvoltage protective device of the atmosphere furnace that the utility model provides; comprise solenoid valve 1, pressure transducer 2 and microcontroller 3; described solenoid valve 1, pressure transducer 2 and microcontroller 3 are mounted in the atmosphere furnace by signaling line; can in body of heater, install any position, usually solenoid valve 1, pressure transducer 2 and microcontroller 3 are installed in furnace wall one side.Wherein, described microcontroller 3 is PIC microcontroller, ARM etc.Solenoid valve 1 is the industry equipment with Electromagnetic Control, is used in direction, flow, speed and other the parameter of adjusting medium in the industrial control system.Solenoid valve 1 can cooperate different circuit to realize the control of expecting, and precision and the flexibility of control can both guarantee.Solenoid valve 1 has a variety of, different solenoid valve 1 to play a role at the diverse location of control system, and the most frequently used is one-way valve, safety valve, position control valve, speed-regulating valve etc.Pressure transducer 2 is the sensors that pressure are converted to electrical signal output, and pressure transducer 2 generally is comprised of elastic sensing element and displacement sensing element or resistance strain gauge.The effect of elastic sensing element is to make tested pressure-acting on certain area and be converted to displacement or strain, then is converted to the electrical signal that becomes certain relation with pressure by displacement sensing element or resistance strain gauge.Sometimes the function of these two kinds of elements is integrated in one.Pressure transducer 2 changes the pressure signal in the atmosphere furnace into the 4-20A electrical signal, this electrical signal is input to microcontroller 3, microcontroller 3 compares according to the signal that receives and the artificial parameter of setting the needs opening and closing, thus the unlatching of sending solenoid valve 1 on the instruction controlled atmosphere furnace.This invention is opened the valve mechanical type and is changed the electronic type unlatching into, can be handling strong, control accuracy is high, pressure departs from setting value a little, solenoid valve 1 opens or closes at once, and cracking pressure can be set as required in the burner hearth, and the pressure that is lower than 0.06Mpa also can be set the safety valve unlatching, whether solenoid valve 1 is opened on the instrument and can be shown, and the opening and closing electromagnetic valve is at same pressure.
The automatic overvoltage protective device of the atmosphere furnace that the utility model provides changes the mechanical type unlatching into the electronic type unlatching and has following advantage: can be handling strong, the pressure security valve that is lower than 0.06Mpa in the mechanical safety valve burner hearth can't be opened, and the automatic overvoltage protective device of atmosphere furnace can be set solenoid valve and open under any pressure in burner hearth; Control accuracy is high, mechanical safety valve, and the pressure transition point of Open valve is high, and the pressure transition point of the automatic overvoltage protective device Open valve of atmosphere furnace is low; On the mounting type, mechanical safety valve needs at right angle setting, and the automatic overvoltage protective device of atmosphere furnace can be installed at an arbitrary position; Pressure demonstration aspect, mechanical safety valve do not have pressure to show, the automatic overvoltage protective system of atmosphere furnace arranges numeral and shows; The tightness aspect, the mechanical safety valve poor air-tightness can't vacuumize, and the automatic overvoltage protective system tightness of atmosphere furnace is good, can vacuumize.
Although the utility model discloses as above with preferred embodiment; so it is not to limit the utility model; any those skilled in the art; within not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (4)
1. automatic overvoltage protective device of atmosphere furnace; it is characterized in that: comprise solenoid valve (1), pressure transducer (2) and microcontroller (3), described solenoid valve (1), pressure transducer (2) and microcontroller (3) are mounted in the atmosphere furnace by signaling line.
2. the automatic overvoltage protective device of atmosphere furnace according to claim 1, it is characterized in that: described solenoid valve (1), pressure transducer (2) and microcontroller (3) are installed in furnace wall one side.
3. the automatic overvoltage protective device of atmosphere furnace according to claim 1, it is characterized in that: described microcontroller (3) is PIC.
4. the automatic overvoltage protective device of atmosphere furnace according to claim 1, it is characterized in that: described microcontroller (3) is ARM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220079129 CN202790808U (en) | 2012-03-05 | 2012-03-05 | Atmosphere furnace automatic overvoltage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220079129 CN202790808U (en) | 2012-03-05 | 2012-03-05 | Atmosphere furnace automatic overvoltage protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790808U true CN202790808U (en) | 2013-03-13 |
Family
ID=47818072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220079129 Expired - Lifetime CN202790808U (en) | 2012-03-05 | 2012-03-05 | Atmosphere furnace automatic overvoltage protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192259A (en) * | 2017-05-25 | 2017-09-22 | 明光市通力工业电炉有限责任公司 | A kind of controlled atmosphere generator of pressurization |
-
2012
- 2012-03-05 CN CN 201220079129 patent/CN202790808U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192259A (en) * | 2017-05-25 | 2017-09-22 | 明光市通力工业电炉有限责任公司 | A kind of controlled atmosphere generator of pressurization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NANJING NANDA INSTRUMENT CO., LTD. Free format text: FORMER NAME: NANJING NANDA INSTRUMENT PLANT |
|
| CP03 | Change of name, title or address |
Address after: 210038, No. 20, Guang Lu Road, Qixia street, Nanjing economic and Technological Development Zone, Jiangsu Patentee after: NANJING NANDA INSTRUMENT PLANT Address before: 210038 3B01-2 block, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: Nanjing NanDa Instrument Plant |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |