CN202101222U - Automatic boiler safety system - Google Patents
Automatic boiler safety system Download PDFInfo
- Publication number
- CN202101222U CN202101222U CN201120177820XU CN201120177820U CN202101222U CN 202101222 U CN202101222 U CN 202101222U CN 201120177820X U CN201120177820X U CN 201120177820XU CN 201120177820 U CN201120177820 U CN 201120177820U CN 202101222 U CN202101222 U CN 202101222U
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- China
- Prior art keywords
- boiler
- control unit
- liquid level
- automatic control
- magnetic valve
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- 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.)
- Expired - Fee Related
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses an automatic boiler safety system, which comprises a liquid level sensor, a pressure sensor, a boiler water inlet solenoid valve, a boiler emptying solenoid valve and a programmable logic controller (PLC) automatic control unit. Because the liquid level sensor and the pressure sensor are arranged on the automatic boiler safety system , and relevant solenoid valves are controlled by the PLC automatic control unit, water inlet and outlet quantity and emptying quantity can be automatically adjusted according to liquid level and steam pressure in a boiler, thereby avoiding over-high liquid level in the boiler or burning without water, ensuring that the pressure in the boiler is not excessive, relieving labor intensity of an operator and avoiding safety accidents. Simultaneously, load of a safety valve is reduced, and frequent bounce and checking can be avoided.
Description
Technical field
A kind of security system of the utility model is specifically related to a kind of explosion-proof system attachment of boiler safety that is used for.
Background technology
Boiler is a kind of energy conversion, to the energy of boiler input the forms such as heat energy of chemical energy in the fuel, electric energy, high-temperature flue gas is arranged, and through the boiler conversion, and outwards steam, high-temperature water or the organic heat of output with certain heat energy is carried.The boiler legacy high-temperature vapour that generally uses is the master.
Steam boiler is the thermal hardware with high temperature, high pressure, is one of special equipment, be widely used in industrial and mining enterprises etc., and be the principal mode that carries out waste heat recovery, owing to have HTHP, its character is dangerous and special.In case have an accident, relate to public safety, particularly for Industrial Boiler, can influence the normal operation of whole production after having an accident, cause bigger economic loss.
In the prior art, the safety attachment of boiler is commonly used comprises Pressure gauge, safety valve and liquid level gauge, and the operative employee operates according to its parameter, and after the pressure superpressure, safety valve jumping up is emitted high pressure, guarantees boiler safety.In fact, boiler belongs to Continuous Running Equipment, and only the operation with operating personnel detects and regulates, and is difficult to guarantee not occur the security incident because of operate miss or carelessness appearance.To in the bigger system of pressure oscillation, security incident appears easily especially particularly.Particularly after the boiler superpressure,, do not jump for a long time the insensitive situation of work to occur, can not guarantee the normal operation of boiler owing to safety valve belongs to mechanical action.And according to safety regulation for operations, safety valve jumping up is i.e. effect and installation again once, has also just caused the increase of workload, improves operating cost.
Therefore; Need a kind of automatic protection security system that is used to pass by on one's way; Can guarantee that liquid level is avoided too high or dry combustion method in the boiler automatically according to the size adjustment Inlet and outlet water and the emptying amount of liquid level in the boiler and steam pressure, guarantee not superpressure of boiler; Alleviate operator's labour intensity, avoid occurring security incident.
The utility model content
In view of this; The purpose of the utility model provides a kind of unattended boiler security system; Can guarantee that liquid level is avoided too high or dry combustion method in the boiler automatically according to the size adjustment Inlet and outlet water and the emptying amount of liquid level in the boiler and steam pressure, guarantee not superpressure of boiler; Alleviate operator's labour intensity, avoid occurring security incident.
The unattended boiler security system of the utility model comprises:
Liquid level sensor is arranged at boiler and is used to detect boiler liquid level;
Pressure sensor is arranged at the Boiler Steam phase, is used to detect steam pressure in the boiler;
The boiler feed water magnetic valve is arranged at the boiler feed water pipeline and is used to control inflow;
Boiler emptying magnetic valve is arranged at the Boiler Steam blowdown piping and is used to control boiler pressure;
The PLC automatic control unit is used to receive the data-signal of liquid level sensor and pressure sensor, and to the control circuit of the control circuit of boiler feed water magnetic valve and the boiler emptying magnetic valve signal of giving an order.
Further, also comprise the supply-water pump control module, comprising:
Magnetic rheological clutch is connected in and is used for according to transmission between power output shaft and the supply-water pump pump shaft of drive motors or breaks off driving-chain, and the control circuit of magnetic rheological clutch is connected in the PLC automatic control unit and accepts its control command;
The return line magnetic valve is arranged on the return line between supply-water pump export pipeline and the inlet ductwork, and the control circuit of return line magnetic valve is connected in the PLC automatic control unit and accepts its control command;
The pump discharge pressure sensor is arranged at the supply-water pump export pipeline and is used to detect the supply-water pump outlet pressure and transfers to the PLC automatic control unit;
Further, also comprise the temperature sensor that is arranged at the Boiler Steam phase, be used to detect the interior vapor (steam) temperature of boiler and transfer to the PLC automatic control unit;
Further, the magnetorheological medium of said magnetic rheological clutch is a magneto-rheological grease;
Further, also comprise alarm unit, the order output terminal of said PLC automatic control unit is connected in alarm unit.
The beneficial effect of the utility model is: the unattended boiler security system of the utility model; Pressure and liquid level sensor are set, and, can adjust Inlet and outlet water and emptying amount according to the size of liquid level in the boiler and steam pressure automatically through PLC automatic control unit control associated solenoid valve; Guarantee that liquid level is avoided too high or dry combustion method in the boiler; Guarantee not superpressure of boiler, alleviate operator's labour intensity, avoid occurring security incident; Simultaneously, reduce the safety valve load, avoid frequent take-off and verification.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Fig. 1 is the structure and the principle schematic of the utility model.
The specific embodiment
Fig. 1 is the structure and the principle schematic of the utility model, and is as shown in the figure: the unattended boiler security system of present embodiment comprises:
Liquid level sensor 4 is arranged at boiler 1 and is used to detect boiler liquid level;
Pressure sensor 5 is arranged at boiler 1 vapor phase, is used to detect steam pressure in the boiler 1; As shown in the figure, be arranged near near boiler 1 steam (vapor) outlet 12;
Boiler feed water magnetic valve 10 is arranged at boiler 1 inlet pipeline and is used to control inflow;
Boiler emptying magnetic valve 7 is arranged at the Boiler Steam blowdown piping and is used to control boiler 1 steam pressure;
PLC automatic control unit 9 is used to receive the data-signal of liquid level sensor 4 and pressure sensor 5, and to the control circuit 71 of the control circuit 101 of boiler feed water magnetic valve 10 and boiler emptying magnetic valve 7 signal of giving an order.As shown in the figure, safety valve 8 also is set on the boiler, when automatic safety system was malfunctioning, safety valve 8 played final explosion-proof.
In the present embodiment, also comprise the supply-water pump control module, comprising:
Magnetic rheological clutch 15 is connected in and is used for according to transmission between power output shaft 31 and supply-water pump 2 pump shafts 21 of drive motors 3 or breaks off driving-chain, and the control circuit 151 of magnetic rheological clutch 15 is connected in PLC automatic control unit 9 and accepts its control command;
Return line magnetic valve 13 is arranged on the return line between supply-water pump 2 export pipelines and the inlet ductwork, and the control circuit 131 of return line magnetic valve 13 is connected in PLC automatic control unit 9 and accepts its control command;
Pump discharge pressure sensor 14 is arranged at supply-water pump 2 export pipelines and is used to detect supply-water pump 2 outlet pressures and transfers to PLC automatic control unit 9;
Liquid level is too high in boiler, regulates inflow through boiler feed water magnetic valve 10, if boiler 1 internal pressure is too high, when supply-water pump 2 loads exceeded designed capacity, then return line magnetic valve 13 was opened, and reduces outlet pressure, avoids drive motors 3 to burn; Simultaneously, PLC automatic control unit 9 is given an order, and cuts off magnetic rheological clutch 15, guarantees not overload operation of drive motors 3, avoids burn-down of electric motor, guarantees security of system.
In the present embodiment, also comprise the temperature sensor 6 that is arranged at boiler 1 vapor phase, be used to detect boiler 1 interior vapor (steam) temperature and transfer to PLC automatic control unit 9; According to temperature parameter, adjustment boiler emptying and fired state further guarantee its safe operation.
In the present embodiment, the magnetorheological medium of said magnetic rheological clutch 15 is a magneto-rheological grease; Phenomenon with corrosion can not appear depositing, service life extended period.
In the present embodiment, also comprise alarm unit 16, the order output terminal of said PLC automatic control unit 9 is connected in alarm unit 16; Alarm unit 16 can be that acoustic alarm, light are reported to the police or sound and light alarm, when generation superpressure, overtemperature or liquid level are unusual, sends alarm signal, avoids causing security incident because the magnetic valve operation is not smooth.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (5)
1. unattended boiler security system is characterized in that: comprising:
Liquid level sensor is arranged at boiler and is used to detect boiler liquid level;
Pressure sensor is arranged at the Boiler Steam phase, is used to detect steam pressure in the boiler;
The boiler feed water magnetic valve is arranged at the boiler feed water pipeline and is used to control inflow;
Boiler emptying magnetic valve is arranged at the Boiler Steam blowdown piping and is used to control boiler pressure;
The PLC automatic control unit is used to receive the data-signal of liquid level sensor and pressure sensor, and to the control circuit of the control circuit of boiler feed water magnetic valve and the boiler emptying magnetic valve signal of giving an order.
2. unattended boiler security system according to claim 1 is characterized in that: also comprise the supply-water pump control module, comprising:
Magnetic rheological clutch is connected in and is used for according to transmission between power output shaft and the supply-water pump pump shaft of drive motors or breaks off driving-chain, and the control circuit of magnetic rheological clutch is connected in the PLC automatic control unit and accepts its control command;
The return line magnetic valve is arranged on the return line between supply-water pump export pipeline and the inlet ductwork, and the control circuit of return line magnetic valve is connected in the PLC automatic control unit and accepts its control command;
The pump discharge pressure sensor is arranged at the supply-water pump export pipeline and is used to detect the supply-water pump outlet pressure and transfers to the PLC automatic control unit.
3. unattended boiler security system according to claim 2 is characterized in that: also comprise the temperature sensor that is arranged at the Boiler Steam phase, be used to detect the interior vapor (steam) temperature of boiler and transfer to the PLC automatic control unit.
4. unattended boiler security system according to claim 3 is characterized in that: the magnetorheological medium of said magnetic rheological clutch is a magneto-rheological grease.
5. unattended boiler security system according to claim 4 is characterized in that: also comprise alarm unit, the order output terminal of said PLC automatic control unit is connected in alarm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120177820XU CN202101222U (en) | 2011-05-30 | 2011-05-30 | Automatic boiler safety system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120177820XU CN202101222U (en) | 2011-05-30 | 2011-05-30 | Automatic boiler safety system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202101222U true CN202101222U (en) | 2012-01-04 |
Family
ID=45387231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120177820XU Expired - Fee Related CN202101222U (en) | 2011-05-30 | 2011-05-30 | Automatic boiler safety system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202101222U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335300A (en) * | 2013-07-17 | 2013-10-02 | 沈阳大学 | Wireless sensor network boiler monitoring system |
| CN104534449A (en) * | 2014-12-15 | 2015-04-22 | 倪传华 | Automatic liquid level control system of boiler |
-
2011
- 2011-05-30 CN CN201120177820XU patent/CN202101222U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335300A (en) * | 2013-07-17 | 2013-10-02 | 沈阳大学 | Wireless sensor network boiler monitoring system |
| CN104534449A (en) * | 2014-12-15 | 2015-04-22 | 倪传华 | Automatic liquid level control system of boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20140530 |