CN202140311U - Automatic alarming protective device for preventing screw oil delivery pump from being evacuated and dry-grinding - Google Patents
Automatic alarming protective device for preventing screw oil delivery pump from being evacuated and dry-grinding Download PDFInfo
- Publication number
- CN202140311U CN202140311U CN201120238792U CN201120238792U CN202140311U CN 202140311 U CN202140311 U CN 202140311U CN 201120238792 U CN201120238792 U CN 201120238792U CN 201120238792 U CN201120238792 U CN 201120238792U CN 202140311 U CN202140311 U CN 202140311U
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- CN
- China
- Prior art keywords
- delivery pump
- oil delivery
- power supply
- transfer pump
- screw rod
- 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 discloses an automatic alarming protective device for preventing a screw oil delivery pump from being evacuated and dry-grinding and comprises a detecting part and an alarming part. The detecting part comprises an electric contact pressure gage arranged on an outlet of the screw oil delivery pump, a contact YK of the electric contact pressure gage is connected with a coil power supply return circuit of an intermediate relay ZJ in series mode, a normally closed contact ZJ1 of the intermediate relay ZJ is connected with a power supply return circuit of a main contactor CJ of a power supply return circuit of a screw oil delivery pump motor D in series mode, and a normally open contact ZJ 2 of the intermediate relay ZJ is connected with a power supply return circuit of an alarming device SD in series mode. The power supply return circuit of the screw oil delivery pump motor D is provided with a thermal relay FR, and a normally closed contact FR1 of the thermal relay FR is connected with the power supply return circuit of the main contactor CJ of the power supply return circuit of the screw oil delivery pump motor D in series mode. When the screw oil delivery pump externally delivers raw oil to a gathering and delivering tank through pipelines, the device protects the oil delivery pump by controlling simple and effectively circuits, thereby preventing the oil delivery pump from being evacuated and dry-grinding and effectively lowering labor intensity of workers on duty.
Description
Technical field
The utility model relates to the anti-automatic alarm protecting of dry grinding of finding time of a kind of screw rod oil transfer pump, belongs to the Crude Oil Transportation technical field, particularly the technical field through pipeline outside, failed of screw rod oil transfer pump pressurization.
Background technique
In the defeated process of crude oil collection, the pattern that often adopts is: the crude oil of oil well output is concentrated to accumulator tank, handles by transporting to multi-purpose station outside the pressurization of screw rod oil transfer pump is outside pipeline again.Advantage is that flow process is simple, and efficient is high, but in use has some problems: because this accumulator tank is too many and dispersion; Defeated accumulator tank does not have simple and effective liquid level to show, does not report to the police when liquid level is reduced to dangerous liquid level, in case workman's carelessness; The screw rod oil transfer pump is found time the crude oil in the accumulator tank; If oil transfer pump is not having the situation dry grinding of fed sheet of a media (crude oil) for a long time, the pump housing can be damaged, and economic loss is produced and caused in influence.
Summary of the invention
The purpose of the utility model is the anti-automatic alarm protecting of dry grinding of finding time of a kind of screw rod oil transfer pump of design, timely Automatic Fuel Cutoff pump, and send acoustooptic alarm, oil transfer pump is played a very good protection, in addition low price.
The technological scheme of the utility model: the anti-automatic alarm protecting of finding time to dry grind of the screw rod oil transfer pump of the utility model comprises test section and warning part; Its test section comprises the pressure gauge with electric contact that is installed on the outlet of screw rod oil transfer pump; The contact YK of pressure gauge with electric contact is connected on the coil power supply loop of intermediate relay ZJ; The normally-closed contact ZJ1 of intermediate relay ZJ is connected on the current supply circuit of screw rod oil transfer pump motor D current supply circuit main contactor CJ, and the normally opened contact ZJ2 of intermediate relay ZJ is connected on the current supply circuit of alarm SD.
Current supply circuit in screw rod oil transfer pump motor D is provided with thermorelay FR, and the normally-closed contact FR1 of thermorelay FR is connected on the current supply circuit of screw rod oil transfer pump motor D current supply circuit main contactor CJ.
The advantage of the utility model: when the utility model is failed defeated jar of crude oil of collection at the screw rod oil transfer pump outside pipeline, utilize simple efficient circuit control, protect oil transfer pump.Make oil transfer pump not find time to dry grind.The utility model is installed simple, and it is reliable to report to the police, and effectively alleviates working strength of workers on duty.
Description of drawings
Fig. 1 is the electrical schematic diagram of the utility model.
Embodiment
Further specify the embodiment of the utility model below in conjunction with accompanying drawing.Fig. 1 is the electrical schematic diagram of the utility model:
The anti-automatic alarm protecting of finding time to dry grind of the screw rod oil transfer pump of the utility model comprises test section and warning part; Its test section comprises the pressure gauge with electric contact that is installed on the outlet of screw rod oil transfer pump; The contact YK of pressure gauge with electric contact is connected on the coil power supply loop of intermediate relay ZJ; The normally-closed contact ZJ1 of intermediate relay ZJ is connected on the current supply circuit of screw rod oil transfer pump motor D current supply circuit main contactor CJ, and the normally opened contact ZJ2 of intermediate relay ZJ is connected on the current supply circuit of alarm SD.
Current supply circuit in screw rod oil transfer pump motor D is provided with thermorelay FR, and the normally-closed contact FR1 of thermorelay FR is connected on the current supply circuit of screw rod oil transfer pump motor D current supply circuit main contactor CJ.
Principle: when the screw rod oil transfer pump will find time to dry grind; The pressure of oil transfer pump outlet has a small amount of decline; And follow violent shake (exporting under the intact situation of one-way valve), pressure gauge with electric contact can descend and shake by this pressure of perception on a small quantity, interlock termination of pumping warning.
Normal condition, the current supply circuit of screw rod oil transfer pump motor D is by switch knob HA, trip button TA, main contactor CJ control.
In the time will finding time to dry grind, screw rod oil transfer pump outlet pressure has a small amount of decline, and pressure gauge with electric contact begins violent shake, sets suitable lower limit, and once shake just can be moved.The contact YK of pressure gauge with electric contact is closed, and the coil of intermediate relay ZJ gets electric adhesive, and the normally-closed contact ZJ1 that is connected on main contactor CJ current supply circuit breaks off; Main contactor CJ outage; Normally opened contact CJ1, CJ2 break off, and the outage of screw rod oil transfer pump motor D plays a protective role.Normally opened contact CJ2 is a self-holding contact.
When the coil of intermediate relay ZJ got electric adhesive, normally opened contact ZJ2 was closed, and alarm SD gets electric alarm.The normally-closed contact ZJ3 of intermediate relay ZJ is a self-holding contact.
Release-push K: be used to distinguish two states; Oil transfer pump stop and the two states of finding time under; Pressure gauge with electric contact all is to be in and lower limit contacting state, thus at oil transfer pump by stopping to change over to operation after two minutes, open pressure gauge with electric contact lower limit contact; The release-push K that closes again, this moment a circuit monitoring and protection dry grinding accident.
Thermorelay FR: when screw rod oil transfer pump motor D is transshipped, thermorelay FR action, its normally-closed contact FR1 breaks off, main contactor CJ outage, the outage of screw rod oil transfer pump motor D plays a protective role.
Claims (2)
1. a screw rod oil transfer pump prevents finding time the automatic alarm protecting of dry grinding; Comprise test section and warning part; It is characterized in that: the test section comprises the pressure gauge with electric contact that is installed on the outlet of screw rod oil transfer pump; The contact YK of pressure gauge with electric contact is connected on the coil power supply loop of intermediate relay ZJ; The normally-closed contact ZJ1 of intermediate relay ZJ is connected on the current supply circuit of screw rod oil transfer pump motor D current supply circuit main contactor CJ coil, and the normally opened contact ZJ2 of intermediate relay ZJ is connected on the current supply circuit of alarm SD.
2. the anti-automatic alarm protecting of dry grinding of finding time of screw rod oil transfer pump according to claim 1; It is characterized in that: the current supply circuit in screw rod oil transfer pump motor D is provided with thermorelay FR, and the normally-closed contact FR1 of thermorelay FR is connected on the current supply circuit of screw rod oil transfer pump motor D current supply circuit main contactor CJ coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120238792U CN202140311U (en) | 2011-07-07 | 2011-07-07 | Automatic alarming protective device for preventing screw oil delivery pump from being evacuated and dry-grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120238792U CN202140311U (en) | 2011-07-07 | 2011-07-07 | Automatic alarming protective device for preventing screw oil delivery pump from being evacuated and dry-grinding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140311U true CN202140311U (en) | 2012-02-08 |
Family
ID=45551369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120238792U Expired - Fee Related CN202140311U (en) | 2011-07-07 | 2011-07-07 | Automatic alarming protective device for preventing screw oil delivery pump from being evacuated and dry-grinding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140311U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354346A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor dual protection belt alarm automation control device |
| CN103354347A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor-dual-protection automatic control device |
| CN113391565A (en) * | 2021-06-22 | 2021-09-14 | 中广核工程有限公司 | Alarm control device and method for flushing nuclear power plant fire resistant oil system |
-
2011
- 2011-07-07 CN CN201120238792U patent/CN202140311U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354346A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor dual protection belt alarm automation control device |
| CN103354347A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Motor-dual-protection automatic control device |
| CN113391565A (en) * | 2021-06-22 | 2021-09-14 | 中广核工程有限公司 | Alarm control device and method for flushing nuclear power plant fire resistant oil system |
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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: 20120208 Termination date: 20120707 |