CN210923539U - Dust cloud minimum ignition temperature measurement system - Google Patents
Dust cloud minimum ignition temperature measurement system Download PDFInfo
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- CN210923539U CN210923539U CN201921585519.5U CN201921585519U CN210923539U CN 210923539 U CN210923539 U CN 210923539U CN 201921585519 U CN201921585519 U CN 201921585519U CN 210923539 U CN210923539 U CN 210923539U
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- control module
- heating furnace
- dust cloud
- electrically connected
- ignition temperature
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Abstract
The utility model discloses a minimum ignition temperature survey system of dust cloud, including the heating furnace, the winding of heating furnace inner wall has resistance wire electric connection on the controllable silicon, the controllable silicon electric connection is on control module, fixed mounting has first thermocouple and second thermocouple electric connection on control module in the heating furnace, the upper portion of heating furnace connects gradually powder storage chamber, second solenoid valve, gas holder, first solenoid valve and compression air pump through the pipeline, control module electric connection has the touch-sensitive screen, control module is connected with the survey and control computer through the LAN, control module is through LAN electric connection router; the utility model measures the temperature by two groups of thermocouples and realizes the control by the control module; the resistance wire is finely controlled through the silicon controlled resistor; and the control module is provided with a touch screen, a measurement and control computer and a wireless terminal, so that the system can be adjusted and the temperature operation condition of the system can be monitored.
Description
Technical Field
The utility model relates to a tubular furnace dust technical field that catches fire specifically is a minimum ignition temperature survey system of dust cloud.
Background
The minimum ignition temperature of the dust cloud is defined as: when the dust cloud in the heating furnace catches fire, the lowest temperature of the inner wall of the middle part of the heating furnace. Dust cloud ignition is defined as: the bottom of the test furnace has obvious flame ejection.
However, the existing heating furnace temperature detection devices directly detect the ignition temperature inside the heating furnace and do not detect the temperature of the heating furnace, so that dangerous accidents easily occur when the heating furnace is in operation, and the detection of the ignition point of dust cloud is not comprehensive; the temperature of the existing resistance wire is not accurately controlled during heating, and generally fluctuates in a larger range, so that the ignition point detection of dust cloud is not accurate enough; in addition, the prior art has a single control mode for the ignition point of the dust cloud and is inconvenient to operate; therefore, the dust cloud minimum ignition temperature measuring system with accurate measurement and convenient control is urgently needed
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a minimum ignition temperature survey system of dust cloud has two sets of thermocouple contrast and detects, advantages such as silicon controlled rectifier adjusting resistance wire and multiple detection control mode for solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a minimum ignition temperature measuring system for dust cloud comprises a heating furnace, wherein a resistance wire is wound on the inner wall of the heating furnace, the resistance wire is electrically connected to a controllable silicon, the controllable silicon is electrically connected to a control module, a first thermocouple is fixedly installed inside the heating furnace, a second thermocouple is fixedly installed on the inner wall of the heating furnace, the first thermocouple and the second thermocouple are electrically connected to the control module, the upper part of the heating furnace is fixedly connected with a powder storage chamber through a pipeline, the powder storage chamber is fixedly connected with a second electromagnetic valve through a pipeline, the second electromagnetic valve is connected with a gas storage tank through a pipeline, the gas storage tank is fixedly connected with a first electromagnetic valve through a pipeline, the first electromagnetic valve is fixedly connected with a compression air pump through a pipeline, the control module is electrically connected with a touch screen, and the control module is connected with a measurement and control computer, the control module is electrically connected with a router through a local area network, and the router is in wireless connection with a wireless terminal.
Preferably, the control module is electrically connected with a first electromagnetic valve and a second electromagnetic valve for controlling the opening and closing.
Preferably, at least two groups of storage modules are arranged in the control module, wherein one group of storage modules is used for storing a programming program body of the control module, and the other group of storage modules is used for storing data records of temperature detection.
Preferably, the air storage tank and the powder storage chamber are both fixedly provided with pressure gauges for detecting the air pressure in the air storage tank and the powder storage chamber.
Preferably, a quartz tube for heat conduction is fixedly arranged on the inner wall of the heating furnace.
Preferably, a D/A module and an amplifying module are arranged in the control module and electrically connected with the controllable silicon.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model realizes stable measurement of temperature through two groups of thermocouples and realizes control through the control module; the resistance wire is controlled and adjusted through the silicon controlled rectifier, so that the temperature of the resistance wire can be finely controlled; the control module is provided with a touch screen, so that the control and detection of the system can be realized on the equipment; and the detection, control and regulation are realized by connecting the serial RS485 communication or the local area network with a monitoring and control computer, and the temperature operation condition of the system can be monitored constantly by wirelessly connecting the router with a remote wireless terminal.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a control block diagram of the control module of the present invention;
fig. 3 is a circuit diagram of the wireless transmitting module of the present invention;
fig. 4 is a circuit diagram of the wireless receiving module of the present invention;
fig. 5 is a circuit diagram of the control module control chip of the present invention.
In the figure: 1. heating furnace; 2. a resistance wire; 3. a first thermocouple; 4. a second thermocouple; 5. silicon controlled rectifier; 6. a control module; 7. compressing the air pump; 8. a first solenoid valve; 9. a gas storage tank; 10. a second solenoid valve; 11. a powder storage chamber; 12. a touch screen; 13. a router; 14. measuring and controlling a computer; 15. a wireless terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "third," "upper," "lower," "front," "rear," "inner," "outer," "end," "portion," "section," "width," "thickness," "zone," and the like, may be used solely for convenience in reference to the figures and to aid in describing the invention, and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a technical solution: a minimum ignition temperature measuring system of dust cloud comprises a heating furnace 1, in order to enable the temperature of a resistance wire 2 to be conducted into the heating furnace 1 and ignite the dust cloud, a quartz tube for heat conduction is fixedly arranged on the inner wall of the heating furnace 1, in order to realize the ignition of the dust cloud in the heating furnace 1, the resistance wire 2 is wound on the inner wall of the heating furnace 1, in order to realize the temperature controllability of the resistance wire 2, the resistance wire 2 is electrically connected to a controllable silicon 5, the controllable silicon 5 is electrically connected to a control module 6, in order to detect the temperature in the heating furnace 1 and the temperature of the inner wall of the heating furnace 1, a first thermocouple 3 is fixedly arranged in the heating furnace 1, in addition, a second thermocouple 4 is fixedly arranged on the inner wall of the heating furnace 1, and the first thermocouple 3 and the second thermocouple 4 are electrically connected to the control module;
according to fig. 1, in order to realize that dust cloud can be blown into the heating furnace 1, a dust storage chamber 11 is fixedly connected to the upper portion of the heating furnace 1 through a pipeline, in order to realize gas control, a second electromagnetic valve 10 is fixedly connected to the dust storage chamber 11 through a pipeline, a gas storage tank 9 is connected to the second electromagnetic valve 10 through a pipeline, the gas storage tank 9 is fixedly connected to a first electromagnetic valve 8 through a pipeline, in order to provide a gas source, a compression air pump 7 is fixedly connected to the first electromagnetic valve 8 through a pipeline, and in order to prevent the gas pressure inside the gas storage tank 9 and the dust storage chamber 11 from being maintained within a stable range, pressure gauges for detecting the gas pressure inside the gas storage tank 9 and the dust storage chamber 11 are fixedly installed on the gas storage tank 9 and the;
according to fig. 1-5, in order to realize the control adjustment of the control module 6, the control module 6 is electrically connected with a touch screen 12, the control module 6 is connected with a monitoring computer 14 through a local area network, in order to realize the wireless remote monitoring of the control module 6, the control module 6 is electrically connected with a router 13 through the local area network, the router 13 is wirelessly connected with a wireless terminal 15, in order to realize the digital-to-analog conversion between the control module 6 and the controllable silicon 5, a D/a module and an amplifying module are arranged inside the control module 6 and electrically connected with the controllable silicon 5, in order to realize the recording of program and temperature data, at least two groups of storage modules are arranged inside the control module 6, one group of storage modules is used for storing the programming program of the control module 6, the other group is used for storing the data recording of temperature detection, in order to realize the automatic control of the first solenoid valve 8 and the, the electromagnetic valve is electrically connected with a first electromagnetic valve 8 and a second electromagnetic valve 10 for controlling the on-off function through a control module 6;
a wireless sending module and a wireless receiving module are arranged in the router, a wireless communication module is formed by pairing a PT2272 and a PT2262 encoding and decoding chip, and a pin 17 (VT) of the PT2272 is connected with an I/O port P3.2(INT0) of the singlechip for receiving effective state indication; the 10-13 pins (D0-D3) are four decoded data pins which are respectively connected with I/O ports P2.0-P2.3 of the single chip microcomputer; pins 1-8 are tri-state (VSS, VDD, null) encoding pins; the output of pin 1 (RXD) of LM358 is a demodulated square wave signal. From the analysis of the sampling result of the logic analyzer, when the PT2272 receives the valid encoded data, the VT terminal outputs a high level. By utilizing the characteristic, the external interrupt triggering mode of the singlechip can be set as falling edge triggering, and the external interrupt of the singlechip is driven by the output of the VT end when the wireless receiving module receives effective data. In an external interrupt handler. The wireless transmitting module sends a coding signal by a coding chip PT2262 according to the working principle of the wireless transmitting and receiving module: after the decoding chip PT2272 receives the signal, the address code is compared and checked twice, the VT pin outputs high level, and at the same time, the corresponding data pin also outputs high level.
The control module adopts an AT89S52 single chip, can reduce the production cost and can effectively realize the use of control programming, and the AT89S52 is a low-power-consumption and high-performance CMOS 8-bit microcontroller which is provided with an AT89S52-24PU and AT89S52-24PU program Flash memory which can be programmed in a system AT 8K. Is fully compatible with industrial 80C51 product instructions and pins. On-chip Flash allows program memory to be programmable in the system, and is also suitable for conventional programmers. On a single chip, a smart 8-bit CPU and a system programmable Flash are provided, so that the AT89S52 provides a highly flexible and super-effective solution for a plurality of embedded control application systems. AT89S52 has the following standard functions: 8 kbyte Flash, 256 bytes RAM, 32-bit I/O port line, watchdog timer, 2 data pointers, three 16-bit timers/counters, a 6-vector 2-level interrupt structure, and full-duplex serial port. In addition, AT89S52 can operate down to 0Hz static logic, supporting 2 software selectable power saving modes. In the idle mode, the CPU stops working, and the RAM, the timer/counter, the serial port and the interrupt are allowed to continue working. Under the power-down protection mode, the RAM content is stored, the oscillator is frozen, and all work of the single chip microcomputer is stopped until the next interruption or hardware reset.
The working principle is as follows: the controllable silicon 5 is controlled by the control module 6 to enable the resistance wire 2 to start heating, then the compressed air pump 7 is started to enable the compressed air pump 7 to start to convey air pressure, then the control module 6 controls the second electromagnetic valve 10 to enable the air pressure to be conveyed into the air storage tank 9, then the control module 6 controls the first electromagnetic valve 8 to enable the air pressure to enter the powder storage chamber 11, so that dust in the powder storage chamber 11 enters the heating furnace 1 under the action of the air pressure, then when the temperature in the heating furnace 1 reaches a certain height, the dust is ignited, and after the dust is ignited, the dust can rush out a flame from the bottom of the heating furnace 1, namely, the dust cloud is ignited, at the moment, the temperature detected by the first thermocouple 3 is the ignition temperature of the dust cloud, then the control module 6 can perform control adjustment through the touch screen 12, and the control module 6 performs MIT-GG, Ethernet communication or MIT-, the 485 serial communication is electrically connected with a monitoring and controlling computer 14 for monitoring, and is connected with a wireless terminal 15 through a router 13, so that remote control and monitoring are realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a minimum ignition temperature survey system of dust cloud, includes heating furnace (1), its characterized in that: the heating furnace is characterized in that a resistance wire (2) is wound on the inner wall of the heating furnace (1), the resistance wire (2) is electrically connected to a controllable silicon (5), the controllable silicon (5) is electrically connected to a control module (6), a first thermocouple (3) is fixedly arranged inside the heating furnace (1), a second thermocouple (4) is fixedly arranged on the inner wall of the heating furnace (1), the first thermocouple (3) and the second thermocouple (4) are electrically connected to the control module (6), the upper portion of the heating furnace (1) is fixedly connected with a powder storage chamber (11) through a pipeline, the powder storage chamber (11) is fixedly connected with a second electromagnetic valve (10) through a pipeline, the second electromagnetic valve (10) is connected with a gas storage tank (9) through a pipeline, the gas storage tank (9) is fixedly connected with a first electromagnetic valve (8) through a pipeline, the first electromagnetic valve (8) is fixedly connected with a compression air pump, the control module (6) is electrically connected with a touch screen (12), the control module (6) is connected with a measurement and control computer (14) through a local area network, the control module (6) is electrically connected with a router (13) through the local area network, and the router (13) is wirelessly connected with a wireless terminal (15).
2. The system for determining the minimum ignition temperature of a dust cloud according to claim 1, wherein: the control module (6) is electrically connected with a first electromagnetic valve (8) and a second electromagnetic valve (10) for controlling opening and closing.
3. The system for determining the minimum ignition temperature of a dust cloud according to claim 1, wherein: at least two groups of storage modules are arranged in the control module (6), wherein one group of storage modules is used for storing a programming program body of the control module (6), and the other group of storage modules is used for storing data records of temperature detection.
4. The system for determining the minimum ignition temperature of a dust cloud according to claim 1, wherein: and pressure gauges for detecting the air pressure in the air storage tank (9) and the powder storage chamber (11) are fixedly mounted on the air storage tank (9) and the powder storage chamber (11).
5. The system for determining the minimum ignition temperature of a dust cloud according to claim 1, wherein: and a quartz tube for heat conduction is fixedly arranged on the inner wall of the heating furnace (1).
6. The system for determining the minimum ignition temperature of a dust cloud according to claim 1, wherein: and a D/A module and an amplification module which are electrically connected with the controllable silicon (5) are arranged in the control module (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921585519.5U CN210923539U (en) | 2019-09-23 | 2019-09-23 | Dust cloud minimum ignition temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921585519.5U CN210923539U (en) | 2019-09-23 | 2019-09-23 | Dust cloud minimum ignition temperature measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210923539U true CN210923539U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921585519.5U Active CN210923539U (en) | 2019-09-23 | 2019-09-23 | Dust cloud minimum ignition temperature measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210923539U (en) |
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- 2019-09-23 CN CN201921585519.5U patent/CN210923539U/en active Active
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