CN203215289U - Automatic control system for methane delivery pressure - Google Patents
Automatic control system for methane delivery pressure Download PDFInfo
- Publication number
- CN203215289U CN203215289U CN 201320174303 CN201320174303U CN203215289U CN 203215289 U CN203215289 U CN 203215289U CN 201320174303 CN201320174303 CN 201320174303 CN 201320174303 U CN201320174303 U CN 201320174303U CN 203215289 U CN203215289 U CN 203215289U
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- pressure
- booster fan
- electrically connected
- control system
- controller
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Abstract
The utility model relates to an automatic control system for a methane delivery pressure. The automatic control system comprises a delivery pipeline and a booster fan, wherein the delivery pipeline is arranged on an outlet of a gas storage tank; the booster fan is arranged on the delivery pipeline; the delivery pipeline is provided with a first pressure sensor and a second pressure sensor on the pipe sections in front of and behind the booster fan respectively; signal output ends of the two pressure sensors are electrically connected to a controller; the controller is electrically connected with a frequency converter; the frequency converter is electrically connected to a driving motor of the booster fan; the delivery pipeline is provided with a pressure stabilizing tank on the pipe section between the second pressure sensor and the booster fan and is provided with an electric control valve on the pipe section between the pressure stabilizing tank and the booster fan; a control end of the electric control valve is electrically connected to the controller. The automatic control system has the advantages of a simple structure, convenience in control, a stable supply gas pressure and a capability of preventing negative pressure.
Description
Technical field
The utility model belongs to biogas and uses field, a kind of biogas discharge pressure automatic control system specifically.
Background technique
In the biogas transporting system, biogas is stored in the gas storage holder (as flexible two film gas holders, wet gasholder etc.), be connected with the biogas conveyance conduit on the air outlet of gas storage holder, the terminal of biogas conveyance conduit is connected to biogas and uses on the equipment (as methane boiler, biogas generator etc.), wherein, in order to improve the transfer efficiency of biogas, at the biogas conveyance conduit booster fan is installed.In use there is following shortcoming in existing biogas transporting system: 1) the normal suction pressure of biogas use equipment (as methane boiler, biogas generator etc.) is 5～8KPa, the atmospheric pressure that goes out of booster fan tends to be higher than the normal operating pressure that biogas uses equipment, thereby causes biogas to use the equipment can't proper functioning; 2) when biogas storage in the gas storage holder is not enough, because booster fan is still extracting biogas, can make and produce negative pressure in the gas holder, for flexible two film gas holders, be connected with positive negative pressure protector on it, after the formation negative pressure, under the effect of positive negative pressure protector, flexible two film gas holder can form explosive gas by a large amount of air of inspiration, in case start can produce blast again; For wet gasholder, after the formation negative pressure, wet gasholder bell jar housing can be out of shape, and jeopardizes the security of operation of equipment.
The model utility content
The technical problems to be solved in the utility model provide a kind of simple in structure, control is convenient, can stablize supply gas pressure, prevent the biogas discharge pressure automatic control system of negative pressure.
For solving the problems of the technologies described above, biogas discharge pressure automatic control system of the present utility model comprises the conveyance conduit that is installed in the gas storage holder outlet and the booster fan that is installed on the conveyance conduit, its structural feature be on the described conveyance conduit before booster fan and pipeline afterwards be separately installed with first pressure transducer and second pressure transducer, the signal output part of two pressure transducers is electrically connected to a controller, be electrically connected with frequency variator on the controller, frequency variator is electrically connected on the drive motor of booster fan.
Adopt said structure, first pressure transducer can in time detect the pressure of gas storage holder outlet, and when pressure was too small, controller was closed booster fan by frequency variator, avoids producing in the gas storage holder negative pressure; Second pressure transducer can in time detect the supply gas pressure that biogas uses equipment end, when pressure is excessive, controller reduces the rotating speed of booster fan by Frequency Converter Control, when pressure is too small, controller improves the rotating speed of booster fan by Frequency Converter Control, make supply gas pressure be stabilized in the suitable scope, thereby guaranteed gas supply under constant pressure.
As a kind of improvement of the present utility model, the pipeline section on the described conveyance conduit between second pressure transducer and booster fan is equipped with surge tank.In this kind structure, surge tank has played the effect of buffering, has guaranteed that further supply gas pressure is stable, and simultaneously to a certain extent, surge tank has also played the effect of temporary transient gas storage.
As further improvement of the utility model, the pipeline section on the described conveyance conduit between surge tank and booster fan is equipped with electrically-controlled valve, and the control end of electrically-controlled valve is electrically connected with described controller.In this kind structure, solenoid valve is used for cutting out air delivering pipeline at any time, avoids gas.
In sum, the utlity model has simple in structure, control is convenient, stablize supply gas pressure and prevent the advantage of negative pressure.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to accompanying drawing; biogas discharge pressure automatic control system of the present utility model comprises the conveyance conduit 2 and the booster fan 3 that is installed on the conveyance conduit 2 that is installed in gas storage holder 1 outlet; wherein; the front end of conveyance conduit 2 is connected with gas storage holder 1; the terminal of gas pipeline 2 connects biogas and uses equipment 11, also is connected with positive negative pressure protector 10 on the gas storage holder 1.On the conveyance conduit 2 before booster fan 3 and pipeline afterwards be separately installed with first pressure transducer 4 and second pressure transducer 5, the signal output part of two pressure transducers is electrically connected to a controller 6, be electrically connected with frequency variator 7 on the controller 6, booster fan 3 is driven by drive motor 31, its general Roots blower that adopts, frequency variator 7 is electrically connected on the drive motor 31 of booster fan 3.First pressure transducer 4 is used in time detecting the pressure in gas storage holder 1 outlet port, and when pressure during at 0-100Pa, booster fan 3 is closed in controller 6 controls, avoids producing in the gas storage holder 1 negative pressure.Second pressure transducer 5 is used in time detecting the supply gas pressure that biogas uses equipment 11 ends, when pressure is excessive, controller 6 reduces the rotating speed of booster fan 3 by frequency variator 7 controls, when pressure is too small, controller 6 improves the rotating speed of booster fan 3 by frequency variator 7 controls, make supply gas pressure be stabilized in the suitable scope, thereby guarantee gas supply under constant pressure.
With reference to accompanying drawing, the pipeline section on the conveyance conduit 2 between second pressure transducer 5 and booster fan 3 is equipped with surge tank 8.Surge tank 8 is used for stablizing the pressure output of gas pipeline 2 terminals.Pipeline section on the conveyance conduit 2 between surge tank 8 and booster fan 3 is equipped with electrically-controlled valve 9, and the control end of electrically-controlled valve 9 is electrically connected with controller 6.Electrically-controlled valve 9 can in time be cut off the path between biogas use equipment 11 and the gas holder 1, avoids gas backstreaming.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art under the prerequisite that does not break away from spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (3)
1. biogas discharge pressure automatic control system, comprise and be installed in the conveyance conduit (2) in gas storage holder (1) outlet and be installed in booster fan (3) on the conveyance conduit (2), it is characterized in that described conveyance conduit (2) go up booster fan (3) before and pipeline afterwards be separately installed with first pressure transducer (4) and second pressure transducer (5), the signal output part of two pressure transducers is electrically connected to a controller (6), be electrically connected with frequency variator (7) on the controller (6), frequency variator (7) is electrically connected on the drive motor (31) of booster fan (3).
2. biogas discharge pressure automatic control system as claimed in claim 1 is characterized in that the pipeline section that described conveyance conduit (2) is gone up between second pressure transducer (5) and booster fan (3) is equipped with surge tank (8).
3. biogas discharge pressure automatic control system as claimed in claim 2, it is characterized in that the pipeline section that described conveyance conduit (2) is gone up between surge tank (8) and booster fan (3) is equipped with electrically-controlled valve (9), the control end of electrically-controlled valve (9) is electrically connected with described controller (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174303 CN203215289U (en) | 2013-04-09 | 2013-04-09 | Automatic control system for methane delivery pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174303 CN203215289U (en) | 2013-04-09 | 2013-04-09 | Automatic control system for methane delivery pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203215289U true CN203215289U (en) | 2013-09-25 |
Family
ID=49204827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320174303 Expired - Fee Related CN203215289U (en) | 2013-04-09 | 2013-04-09 | Automatic control system for methane delivery pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203215289U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696705A (en) * | 2015-03-20 | 2015-06-10 | 重庆市科学技术研究院 | System and method for controlling intelligent dynamic gas storage |
| CN111734946A (en) * | 2020-07-04 | 2020-10-02 | 南京天人环保设备有限公司 | Overpressure protector for biogas double-membrane gas storage cabinet |
-
2013
- 2013-04-09 CN CN 201320174303 patent/CN203215289U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696705A (en) * | 2015-03-20 | 2015-06-10 | 重庆市科学技术研究院 | System and method for controlling intelligent dynamic gas storage |
| CN104696705B (en) * | 2015-03-20 | 2017-11-24 | 重庆市科学技术研究院 | Intelligent Dynamic lays in the gas storage control system and method for biogas |
| CN111734946A (en) * | 2020-07-04 | 2020-10-02 | 南京天人环保设备有限公司 | Overpressure protector for biogas double-membrane gas storage cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |