CN202302753U - Pressure alarm of oil conveying pipeline - Google Patents
Pressure alarm of oil conveying pipeline Download PDFInfo
- Publication number
- CN202302753U CN202302753U CN2011204365798U CN201120436579U CN202302753U CN 202302753 U CN202302753 U CN 202302753U CN 2011204365798 U CN2011204365798 U CN 2011204365798U CN 201120436579 U CN201120436579 U CN 201120436579U CN 202302753 U CN202302753 U CN 202302753U
- Authority
- CN
- China
- Prior art keywords
- pressure
- contact
- power supply
- alternating current
- conveying pipeline
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a pressure alarm of an oil conveying pipeline, and belongs to an alarming device. A normally-open contact of an electric contact pressure meter is connected in series with an alternating current contactor coil and is electrically connected to a direct current power supply; another normally-open contact of the alternating current contactor is connected in series with an electric bell and is electrically connected to an alternating current power supply; and a normally-closed contact of the alternating current contactor is serially connected with an indicating lamp and is electrically connected to the alternating current power supply. In the using process, when pressure in the pipeline is emptied, the pressure alarm of the oil conveying pipeline can send an alarm signal to remind an operator on duty of treating the situation; and the pressure alarm of the oil conveying pipeline is simple and reasonable in structure and high in alarming reliability.
Description
Technical field
The utility model provides a kind of warning device, especially a kind of warning device that is used on the petroleum pipeline.
Background technique
On the oil field petroleum pipeline that oil transfer pump is installed, there are not reasons such as pressure warning unit owing to the scene, vaccuum phenomenon can appear in pipeline sometimes.This just need the operator on duty by rule of thumb certain interval of time go inspection once, open, the operation of termination of pumping, wasted operating time and manpower greatly.
Summary of the invention
The utility model technical problem to be solved is, a kind of petroleum pipeline pressure alarm is provided, and it can carry out alarm when the pipeline emptying.
The utility model is to realize like this; The petroleum pipeline pressure alarm; It is connected electrically on the DC electrical source after having normally opened contact and the ac contactor coil of pressure gauge with electric contact to be cascaded; Another normally opened contact that it also has A.C. contactor be connected electrically on the ac power supply after electric bell is connected, the normally-closed contact of A.C. contactor be connected electrically on the ac power supply after tutorial light is connected.
Adopt the petroleum pipeline pressure warning unit of said structure, in the using process, when the pressure emptying in the pipeline, can send alarm signal, remind the operator on duty to handle.And simple and reasonable, the good reliability of warning.
Description of drawings
Fig. 1 is the schematic diagram of a part of circuit of the utility model.
Fig. 2 is the schematic diagram of another part circuit of the utility model.
Embodiment
The concrete structure and the working principle of the instance explanation the utility model that provides below in conjunction with accompanying drawing.
Shown in accompanying drawing; The petroleum pipeline pressure alarm of the utility model; It is connected electrically on the DC electrical source E after having normally opened contact K1 and the ac contactor coil KM of pressure gauge with electric contact to be cascaded; Another normally opened contact K2 that it also has A.C. contactor be connected electrically on the ac power supply after electric bell B connects, the normally-closed contact K3 of A.C. contactor be connected electrically on the ac power supply after tutorial light L connects.
Pressure gauge with electric contact is installed on the pipeline, detects the pressure in the pipeline, and pressure gauge with electric contact is configured lower limit, prescribes a time limit when pressure is reduced to down, and the normally opened contact K1 of pressure gauge with electric contact connects, and ac contactor coil KM gets.Ac contactor coil KM get electric after, correspondingly, another normally opened contact K2 of A.C. contactor is closed, electric bell gets the electrician and does, and sends chimes of doom.The normally-closed contact K3 of A.C. contactor breaks off, and tutorial light L extinguishes, and is that the emptying phenomenon appears in the pipeline that is connected on which oil transfer pump to operator's prompting.
The voltage of described DC electrical source E can be 24V, can guarantee the on-the-spot Security of using like this.Described ac power supply can be the 220V ac power supply.
Obviously, the principle of this pressure alarm also can be used for the warning that the line pressure superpressure is just felt suffocated.Capping on pressure gauge with electric contact is prescribed a time limit when pressure is reduced to, and the normally opened contact K1 of pressure gauge with electric contact connects.The subsequent working process as stated, electric bell gets the electric chimes of doom that sends, tutorial light extinguishes.
On pressure gauge with electric contact, wiring and contact, the lower position on the dial plate of pressure gauge with electric contact that pointer can be used as normally opened contact K1 are provided with another contact, constitute normally opened contact K1.Pressure in the pipeline descends, and makes pointer when another contact on the dial plate contacts, and normally opened contact K1 is conducting.
During use, electric bell, tutorial light can be connected in the residing control room of operator through lead, so that observe.
Claims (1)
1. petroleum pipeline pressure alarm; It is characterized in that; It is connected electrically on the DC electrical source E after having normally opened contact K1 and the ac contactor coil KM of pressure gauge with electric contact to be cascaded; Another normally opened contact K2 that it also has A.C. contactor be connected electrically on the ac power supply after electric bell B connects, the normally-closed contact K3 of A.C. contactor be connected electrically on the ac power supply after tutorial light L connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204365798U CN202302753U (en) | 2011-10-30 | 2011-10-30 | Pressure alarm of oil conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204365798U CN202302753U (en) | 2011-10-30 | 2011-10-30 | Pressure alarm of oil conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202302753U true CN202302753U (en) | 2012-07-04 |
Family
ID=46371646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204365798U Expired - Fee Related CN202302753U (en) | 2011-10-30 | 2011-10-30 | Pressure alarm of oil conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202302753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976278A (en) * | 2017-12-11 | 2018-05-01 | 辽宁厚能科技股份有限公司 | A kind of vacuum low pressure alarm |
-
2011
- 2011-10-30 CN CN2011204365798U patent/CN202302753U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976278A (en) * | 2017-12-11 | 2018-05-01 | 辽宁厚能科技股份有限公司 | A kind of vacuum low pressure alarm |
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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: 20120704 Termination date: 20121030 |