CN216844141U - Heating furnace instrument power air supply safety coefficient - Google Patents
Heating furnace instrument power air supply safety coefficient Download PDFInfo
- Publication number
- CN216844141U CN216844141U CN202220563738.9U CN202220563738U CN216844141U CN 216844141 U CN216844141 U CN 216844141U CN 202220563738 U CN202220563738 U CN 202220563738U CN 216844141 U CN216844141 U CN 216844141U
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- pipe
- heating furnace
- air inlet
- 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.)
- Active
Links
Images
Landscapes
- Furnace Details (AREA)
Abstract
The utility model provides a heating furnace instrument power air supply safety coefficient, belongs to instrument air supply control technical field, this safety coefficient, including the gas holder, the intake pipe is installed to the air inlet department of gas holder, installs automatically controlled valve along the direction of admitting air in proper order in the intake pipe, installs the pressure detection part on the gas holder, and the pressure detection part passes through PLC and links to each other with automatically controlled valve, and the gas outlet department of gas holder installs the instrument valve, the beneficial effects of the utility model are that, the utility model discloses a structural design is simple, and reliable operation can be stabilized heating furnace instrument air supply at working range, makes output pressure more stable, has avoided pipeline pressure oscillation to instrument air supply operating pressure's influence, has improved the security of using gas.
Description
Technical Field
The utility model relates to an instrument air supply control technical field especially relates to a heating furnace instrument power air supply safety coefficient.
Background
In the use of a pneumatic regulating valve or a high-temperature detection instrument of a heating furnace, compressed air or nitrogen is often used as an instrument power air source to cool equipment or provide working kinetic energy, the working pressure of the pneumatic instrument is generally 0.4-0.5Mpa, the normal work of an instrument valve is influenced if the working pressure is too low, even the interlocking and shutdown of the heating furnace are caused, and the damage of a sealing piece of a pneumatic execution structure of the instrument valve can be accelerated if the working pressure is too high.
The gas source of the instrument of the heating furnace is generally used in a plurality of factories or a plurality of places, in the using process, the valve position of a general gas inlet valve is opened according to the gas working pressure for the heating furnace, but the pressure fluctuation of a pipe network is caused by the gas consumption of the user, particularly, compressed air is used as a gas source medium, slight impurities and water quality exist in the transmission process, a locator is blocked, the adjusting precision of the valve is influenced, and even the valve is knocked. When the air source leakage suddenly occurs due to the failure of the pneumatic instrument valve of the heating furnace, the reflecting speed and the reflecting precision of the pressure reducing valve cannot meet the control requirements, and when the pressure fluctuation is lower than the lower limit protection value, if the air inlet valve position cannot increase the air inlet amount in time, the interlocking protection blowing-out of the heating furnace can be caused. In addition, during routine maintenance, the use of the pneumatic instrument valve is easily affected by the fault replacement of the pressure reducing valve.
Therefore, the problem to be solved urgently in the air source control of the instrument at present is to provide stable pressure for the pneumatic instrument of the heating furnace and to timely remove the influence of moisture and slight impurities in the air source.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a heating furnace instrument power air supply safety coefficient can stabilize heating furnace instrument air supply at working range, makes output pressure more stable, has avoided pipeline pressure fluctuation to instrument air supply operating pressure's influence, has improved the security of using gas.
In order to achieve the above object, the present invention provides a technical solution for solving the technical problem: heating furnace instrument power air supply safety coefficient, including the gas holder, the air inlet department of gas holder installs the intake pipe, install automatically controlled valve in proper order along the direction of admitting air in the intake pipe, install the pressure measurement part on the gas holder, the pressure measurement part pass through PLC with the automatically controlled valve links to each other, the gas outlet department of gas holder installs the instrument valve.
The air inlet pipe is connected with a bypass pipe communicated with the air inlet pipe, a manual valve I is arranged in the bypass pipe, a manual valve II and a manual valve III are arranged on the air inlet pipe between the two communication ports of the air inlet pipe and the bypass pipe, and the electric control valve is arranged between the manual valve II and the manual valve III.
The pressure reducing valve is installed on an air inlet pipe connected with the bypass pipe and the air storage tank.
The pressure detection part is set as a pressure transmitter, the pressure transmitter is communicated with an upper computer through a PLC, and an air inlet pipe at an air inlet of the air storage tank or the air storage tank is provided with a digital display pressure gauge.
The bottom of the gas storage tank is also provided with a drain pipe, and a drain valve is arranged on the drain pipe.
The pressure relief pipe is installed at the top of the gas storage tank, a pressure relief valve is installed on the pressure relief pipe, and the pressure detection part is connected with the pressure relief valve through a PLC.
The utility model has the advantages that:
1. the utility model solves the fluctuation influence in the pressure adjusting process when the air storage tank is used for air inlet pressure fluctuation, so that the output pressure is more stable; the air inlet pipe of the air storage tank is provided with the electric control valve and the pressure reducing valve, the pressure detection part on the air storage tank monitors the internal pressure in real time and is in interlocking control with the electric control valve through the PLC, the pressure of the air storage tank can be controlled within a safe working range and is matched with the pressure reducing valve for use, the defects that the pressure reducing valve is poor in adjustment precision and untimely in reaction speed are overcome, the gas using safety is improved through redundancy design, and the influence of pipeline pressure fluctuation on the working pressure of an instrument gas source is avoided.
2. The bypass pipe is connected to the air inlet pipe, when the electric control valve breaks down, the manual valve II and the manual valve III can be closed, the manual valve I is opened, the pressure of the gas tank is controlled within the working pressure range, and the electric control valve can be conveniently replaced or maintained without stopping the furnace; through set up hydrophobic blowoff valve on the blow off pipe of gas holder bottom, can be regularly arrange the outer row of water and slight impurity in the gas holder, through set up the relief valve on the pressure release pipe at gas holder top, make pressure measurement part pass through PLC and relief valve interlocking control, when relief valve and automatically controlled valve break down suddenly, can carry out the pressure release protection when making the pressure in the gas holder exceed the safety threshold of relief valve, further improved the security of air supply air feed.
To sum up, the utility model discloses structural design is simple, and reliable operation can be stabilized heating furnace instrument air supply at working range, makes output pressure more stable, has avoided pipeline pressure fluctuation to instrument air supply operating pressure's influence, has improved the security of using gas.
Drawings
The contents of the various figures of the specification and the labels in the figures are briefly described as follows:
fig. 1 is a schematic structural view of the present invention;
the labels in the above figures are: 1. the automatic control device comprises an air storage tank, an air inlet pipe, an electric control valve, a pressure reducing valve, a pressure detecting part, a bypass pipe, a manual valve I, a manual valve II, a manual valve III, a blow-off pipe 10, a drainage blow-off valve 11, a pressure relief pipe 12, a pressure relief valve 13 and an instrument valve 14.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses specific embodiment does: as shown in figure 1, the heating furnace instrument power air source safety system comprises an air storage tank 1, an air inlet pipe 2 is installed at an air inlet of the air storage tank 1, an electric control valve 3 and a pressure reducing valve 4 are sequentially installed on the air inlet pipe 2 along the air inlet direction, a pressure detection part 5 is installed on the air storage tank 1, the pressure detection part 5 is connected with the electric control valve 3 through a PLC, an instrument valve 14 is installed at an air outlet of the air storage tank 1, the pressure detection part 5 monitors the internal pressure of the air storage tank 1 in real time and is in interlocking control with the electric control valve 3 through the PLC, the pressure of the gas storage tank 1 can be controlled within a safe working range, the working pressure of the pressure reducing valve 4 is corrected to a set value, the interlocking control of the electric control valve 3 is matched with the pressure reducing valve 4 for use, the defects of poor adjusting precision and untimely reaction speed of the pressure reducing valve 4 are overcome, the redundant design improves the gas utilization safety and avoids the influence of pipeline pressure fluctuation on the working pressure of the instrument gas source.
Specifically, a bypass pipe 6 communicated with the air inlet pipe 2 is connected to the air inlet pipe 2, a manual valve I7 is arranged in the bypass pipe 6, a manual valve II 8 and a manual valve III 9 are arranged on the air inlet pipe 2 between the air inlet pipe 2 and two communication ports of the bypass pipe 6, an electric control valve 3 is arranged between the manual valve II 8 and the manual valve III 9, and a pressure reducing valve 4 is arranged on the air inlet pipe 2, connected with the air storage tank 1, of the bypass pipe 6. Under a normal working state, the manual valve I7 is closed, and the manual valve II 8 and the manual valve III 9 are opened, so that an air source enters the air storage tank 1 from the air inlet pipe 2; when the electric control valve 3 breaks down, close manual valve II 8 and manual valve III 9, and open manual valve I7, make the air supply get into bypass pipe 6 by intake pipe 2 again and get into in the gas holder 1 by intake pipe 2, make bypass pipe 6 become the reserve passageway when overhauing, with gas tank pressure control in the operating pressure scope, the electric control valve 3 can conveniently be changed or maintain without blowing out, after electric control valve 3 resumes normally, can close manual valve I7, manual valve II 8 and manual valve III 9 are opened.
Specifically, pressure detection part 5 wherein sets up to pressure transmitter, and pressure transmitter links to each other with the host computer communication through PLC, and pressure transmitter transmits the pressure data of the gas holder 1 who detects to the host computer through PLC and shows, and PLC exports control command through comparing the detected value with the settlement range value simultaneously to the aperture of control automatically controlled valve 3 adjusts the pressure in the gas holder 1 in real time in the scope of settlement. The pressure transmitter can be set as a digital display pressure transmitter, a digital display pressure gauge is arranged on an air inlet pipe 2 at an air inlet of the air storage tank 1 or the air storage tank 1, when the digital display pressure gauge is arranged on the air inlet pipe 2 at the air inlet of the air storage tank 1, and when the difference value of the pressure data of the digital display pressure gauge and the pressure transmitter is too large, the situation that the air inlet pipe 2 is likely to be blocked can be judged, so that countermeasures can be taken in time; when the digital display pressure gauge is installed on the gas storage tank 1, when the pressure data difference value of the digital display pressure gauge and the pressure transmitter is too large, the working of the pressure transmitter can be judged to be abnormal, so that the pressure display can be checked and processed in time, and the safety of pressure display can be improved.
Specifically, a drain pipe 10 is further arranged at the bottom of the air storage tank 1, a drain valve 11 is mounted on the drain pipe 10, the drain valve 11 can be opened periodically, the air flow in the air storage tank 1 can discharge water and light impurities deposited at the bottom of the air storage tank 1, the situation that the light impurities and the water quality block the instrument valve 14 to influence the adjustment accuracy of the instrument valve 14 is avoided, and even the instrument valve 14 is knocked.
Specifically, the pressure release pipe 12 is installed at the top of air storage tank 1 therein, install relief valve 13 on the pressure release pipe 12, and pressure detection part 5 links to each other with relief valve 13 through PLC, and when relief valve 4 and automatically controlled valve 3 broke down suddenly, when making the pressure in the air storage tank 1 exceed the safety threshold of relief valve 13, PLC received behind the superpressure detection signal control relief valve 13 output pressure release instruction, can carry out the pressure release protection, has further improved the security of air supply gas supply.
The working principle of the power gas source safety system of the heating furnace instrument is as follows: when an air source enters the air storage tank 1 through the air inlet pipe 2, the manual valve II 8 and the manual valve III 9 are opened, the manual valve I7 is closed, the correction value of the pressure reducing valve 4 is the upper limit of the working pressure of the air source of the instrument valve, the pressure detecting component 5 detects the pressure of the air storage tank 1 and then transmits the pressure to the PLC, and the PLC compares the data with a set target value (the target value is generally set on the upper limit of the working pressure of the air source of the instrument valve) to adjust the opening degree of the electric control valve 3 and control the pressure of the air storage tank 1 at the target value.
When the electric control valve 3 is in fault and needs to be replaced or maintained, the manual valve II 8 and the manual valve III 9 are closed, the manual valve I7 is manually opened, the pressure of the gas storage tank 1 is controlled within a working pressure range, and after the electric control valve 3 is recovered to be normal, the manual valve I7 is closed, and the manual valve II 8 and the manual valve III 9 are opened. When the pressure reducing valve 4 and the electric control valve 3 both suddenly break down and the pressure in the air storage tank 1 exceeds the safety threshold of the pressure reducing valve 13, the PLC controls the pressure reducing valve 13 to output a pressure reducing instruction, so that pressure reducing protection can be performed.
In normal operation, the blowdown trap at the bottom of the gas storage tank 1 can be opened periodically, and when the blowdown trap is opened, the air flow discharges impurities and water deposited at the bottom, so that the influence of slight impurities and water quality on the instrument valve 14 is avoided, and meanwhile, the electric control valve 3 can still balance the pressure of a working gas source at a set target value according to the pressure of the gas storage tank 1.
To sum up, the utility model discloses structural design is simple, and reliable operation can be stabilized heating furnace instrument air supply at working range, makes output pressure more stable, has avoided pipeline pressure fluctuation to instrument air supply operating pressure's influence, has improved the security of using gas.
The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.
Claims (6)
1. The utility model provides a heating furnace instrument power air supply safety coefficient, its characterized in that, includes the gas holder, the intake pipe is installed to the air inlet department of gas holder, install automatically controlled valve and relief pressure valve in proper order along the direction of admitting air in the intake pipe, install the pressure measurement part on the gas holder, the pressure measurement part pass through PLC with the automatically controlled valve links to each other, instrument valve is installed to the air outlet department of gas holder.
2. A heating furnace instrument power gas supply safety system according to claim 1, wherein: the air inlet pipe is connected with a bypass pipe communicated with the air inlet pipe, a manual valve I is arranged in the bypass pipe, a manual valve II and a manual valve III are arranged on the air inlet pipe between the two communication ports of the air inlet pipe and the bypass pipe, and the electric control valve is arranged between the manual valve II and the manual valve III.
3. A heating furnace instrument power gas supply safety system according to claim 2, characterized in that: the pressure reducing valve is installed on an air inlet pipe connected with the bypass pipe and the air storage tank.
4. A heating furnace instrument power gas supply safety system according to claim 1, wherein: the pressure detection part is set as a pressure transmitter, the pressure transmitter is communicated with an upper computer through a PLC, and an air inlet pipe at an air inlet of the air storage tank or the air storage tank is provided with a digital display pressure gauge.
5. A heating furnace instrument power gas supply safety system according to claim 1, wherein: the bottom of the gas storage tank is also provided with a drain pipe, and a drain valve is arranged on the drain pipe.
6. A heating furnace instrument power gas supply safety system according to claim 1, wherein: the pressure relief pipe is installed at the top of the gas storage tank, a pressure relief valve is installed on the pressure relief pipe, and the pressure detection part is connected with the pressure relief valve through a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220563738.9U CN216844141U (en) | 2022-03-15 | 2022-03-15 | Heating furnace instrument power air supply safety coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220563738.9U CN216844141U (en) | 2022-03-15 | 2022-03-15 | Heating furnace instrument power air supply safety coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216844141U true CN216844141U (en) | 2022-06-28 |
Family
ID=82095718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220563738.9U Active CN216844141U (en) | 2022-03-15 | 2022-03-15 | Heating furnace instrument power air supply safety coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216844141U (en) |
-
2022
- 2022-03-15 CN CN202220563738.9U patent/CN216844141U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113931754B (en) | Gaseous fuel supply system | |
| CN112547295B (en) | Purging method and system for primary wind speed measurement of coal mill | |
| CN216844141U (en) | Heating furnace instrument power air supply safety coefficient | |
| CN209960222U (en) | Gas pressure regulating metering cabinet capable of monitoring gas leakage in cabinet in real time | |
| CN109216732B (en) | High-pressure hydrogen supply system of hydrogen fuel cell ship | |
| CN111853753A (en) | Steam generation system based on SOEC and control method thereof | |
| CN113782789B (en) | Anode pressure protection method of fuel cell system | |
| CN214036885U (en) | Liquid level stabilizing system for oil tank of sealed oil floater of generator | |
| CN217421444U (en) | Water-cooling automatic water replenishing system | |
| CN215668070U (en) | Based on blast furnace blast system prevents negative pressure system with accident condition | |
| CN217202075U (en) | Intelligent control device for hydrogen chloride synthesis production in chlor-alkali process | |
| CN219526686U (en) | Blast furnace pressure regulating valve group alarm system | |
| CN219530574U (en) | Natural gas pressure regulating sled | |
| CN218820502U (en) | Cooling air system is examined to fire | |
| CN110527760A (en) | Blast furnace blower system and blast furnace air supply method | |
| CN214890515U (en) | Spare valve position switching device for pneumatic valve | |
| CN216743845U (en) | Bleeding valve redundancy control device and natural gas pressure regulating station of gas power plant thereof | |
| CN217423528U (en) | Positive pressure ventilation system of explosion-proof door hopper | |
| CN219829981U (en) | Gas purity detection flow control system and welding equipment | |
| CN212319678U (en) | Steam generation system based on SOEC | |
| CN215765192U (en) | Parallel energy-saving system of methane fuel gas furnace and gas fuel gas furnace | |
| CN215569774U (en) | Modified natural gas regulating valve | |
| CN214064579U (en) | Closed safe recovery system of storage tank waste gas of coke-oven plant | |
| CN214572081U (en) | Blast furnace gas system overpressure safety interlocking control equipment | |
| CN211902378U (en) | Gas pressure regulating system with automatic pressure relief function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |