CN104391518A - Shielding pump pressure control system - Google Patents
Shielding pump pressure control system Download PDFInfo
- Publication number
- CN104391518A CN104391518A CN201410625035.4A CN201410625035A CN104391518A CN 104391518 A CN104391518 A CN 104391518A CN 201410625035 A CN201410625035 A CN 201410625035A CN 104391518 A CN104391518 A CN 104391518A
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- China
- Prior art keywords
- pressure
- pump
- intelligent controller
- drive motor
- canned motor
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- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a shielding pump pressure control system. The shielding pump pressure control system includes the following components of: a pressure difference transmitter which is used for detecting pressure difference between the inlet of a shielding pump and a driving motor cavity and outputting pressure difference signals and is arranged between the shielding pump and the driving motor cavity; an intelligent control instrument which receives the pressure difference signals transmitted by the pressure difference transmitter, performing signal processing and data analysis on the received signals, and controlling the opening and closing of a pressure relief electromagnetic valve and a metering pump; a driving module; and an AC contactor; the intelligent control instrument is connected with the AC contactor; the AC contactor is connected with the metering pump; the intelligent control instrument is also connected with the driving module; and the driving module is connected with the pressure relief electromagnetic valve. With the shielding pump pressure control system adopted, it can be ensured that the pressure difference between the cavity of the shielding pump and the driving motor cavity is constantly kept in a prescribed range when pressures at the inlet of the pump changes.
Description
Technical field
The present invention relates to a kind of control pressurer system, particularly relate to and utilize the process of intelligent controller to pressure difference transmitter signal automatically to open, close pressure release electromagnetic valve and volume pump to control the control system of canned motor pump pump chamber and drive motor chamber pressure reduction.
Background technology
Canned motor pump is used widely in oil, chemical industry with its leak free feature, under some special operation conditions, need with the medium of canned motor pump conveying containing solid impurity, and pump inlet pressure is change, and canned motor pump uses sliding bearing, must be cooled by the medium cleaned, lubricate, adopt regular mud type canned motor pump, when pump inlet pressure increases, the medium that pump chamber includes solid impurity will enter in motor cavity, damage shield pump bearing, cause canned motor pump fault.In prior art when canned motor pump Stress control, the pressure differential between in canned motor pump porch and motor cavity not being monitored in real time, to making impurity enter in motor cavity during Stress control, canned motor pump being damaged.For the problems referred to above, a kind of canned motor pump control pressurer system of research and design, thus solution existing issue is very necessary.
Summary of the invention
According to prior art Problems existing, the invention discloses a kind of canned motor pump control pressurer system, comprise: for the pressure differential between detecting in canned motor pump porch and drive motor chamber, this differential pressure signal is carried out the pressure difference transmitter that exports, described pressure difference transmitter is arranged between canned motor pump and drive motor chamber;
Receive the differential pressure signal of described pressure difference transmitter transmission, carry out the intelligent controller of the opening and closing of signal transacting and data analysis control pressure release electromagnetic valve and volume pump to the received signal;
This system also comprises driver module and A.C. contactor, and described intelligent controller is connected with A.C. contactor, and described A.C. contactor is connected with volume pump; Described intelligent controller is also connected with driver module, and described driver module is connected with pressure release electromagnetic valve,
Under duty: when canned motor pump pressure at inlet raises, described intelligent controller is analyzed the differential pressure signal that pressure difference transmitter transmits, when pressure differential between in canned motor pump porch and drive motor chamber is greater than the threshold value of setting, the A.C. contactor that described intelligent controller output instruction signal controls motors of metering pumps power supply closes, start volume pump, described volume pump pressurizes to drive motor cavity liquid injecting, pressure differential between in canned motor pump porch and drive motor chamber is when setting in threshold range, described intelligent controller controls volume pump and quits work,
When canned motor pump pressure at inlet reduces, described intelligent controller is analyzed the differential pressure signal that pressure difference transmitter transmits, when pressure differential between in canned motor pump porch and drive motor chamber is greater than the threshold value of setting, command signal is sent to driver module by described intelligent controller, described driver module controls pressure release electromagnetic valve and opens, and reduces drive motor cavity pressure; Pressure differential between in canned motor pump porch and drive motor chamber is when setting in threshold range, and described intelligent controller controls pressure release electromagnetic valve and closes.
Fluid injection pressure pipeline between described volume pump and drive motor chamber is provided with retaining valve.
Connecting line between described drive motor chamber and retaining valve is provided with the pressure unit for detected pressures data, described pressure unit is connected with pressure digital display meter.
Owing to have employed technique scheme, canned motor pump control pressurer system provided by the invention, this canned motor pump control pressurer system can when pump inlet pressure changes, and the pressure differential between ensureing in canned motor pump cavity pressure and motor cavity remains in specialized range.By pressure difference transmitter, motor cavity and the pressure reduction in shielding pump chamber are monitored, and signal is sent to intelligent controller, by intelligent controller, the pressure difference in motor cavity and pump chamber is judged, the open and close of automatic control pressure release electromagnetic valve and volume pump, regulate motor cavity pressure, stable within the specific limits to ensure the pressure reduction in motor cavity and pump chamber.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of canned motor pump control pressurer system of the present invention.
Embodiment
For making technical scheme of the present invention and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear complete description is carried out to the technical scheme in the embodiment of the present invention:
Canned motor pump control pressurer system as shown in Figure 1, comprises pressure difference transmitter 1, intelligent controller 2, pressure release electromagnetic valve 3, volume pump 4, driver module 5, A.C. contactor 6.Described pressure difference transmitter 1 carries out signal with intelligent controller 2 and communicates, and intelligent controller 2 is connected with A.C. contactor 6, and A.C. contactor 6 is connected with volume pump 4.Pressure release electromagnetic valve 3 and pressure difference transmitter 1 is connected with between canned motor pump and drive motor chamber.Described intelligent controller 2 is connected with driver module 5, and described driver module 5 is connected with pressure release electromagnetic valve 3, and described intelligent controller 2 controls the work of A.C. contactor 6 and driver module 5.Described pressure difference transmitter 1 is for the pressure differential between detecting in canned motor pump porch and drive motor chamber, undertaken exporting intelligent controller 2 to by this differential pressure signal, and intelligent controller 2 receives differential pressure signal that pressure difference transmitter 1 transmits, carries out the opening and closing that signal transacting and data analysis control pressure release electromagnetic valve 3 and volume pump 4 to the received signal.
In working order: when canned motor pump pressure at inlet raises, the differential pressure signal that described intelligent controller 2 pairs of pressure difference transmitters 1 transmit is analyzed, when pressure differential between in canned motor pump porch and drive motor chamber is greater than the threshold value of setting, the A.C. contactor 6 that described intelligent controller 2 output instruction signal controls volume pump 4 motor power closes, start volume pump 4, described volume pump 4 pressurizes to drive motor cavity liquid injecting, pressure differential between in canned motor pump porch and drive motor chamber is when setting in threshold range, described intelligent controller 2 controls volume pump 4 and quits work,
When canned motor pump pressure at inlet reduces, the differential pressure signal that described intelligent controller 2 pairs of pressure difference transmitters 1 transmit is analyzed, when pressure differential between in canned motor pump porch and drive motor chamber is greater than the threshold value of setting, command signal is sent to driver module 5 by described intelligent controller 2, described driver module 5 controls pressure release electromagnetic valve 3 and opens, and reduces drive motor cavity pressure; Pressure differential between in canned motor pump porch and drive motor chamber is when setting in threshold range, and described intelligent controller 2 controls pressure release electromagnetic valve 3 and closes.Thus realize the pressure automatically controlling pump chamber and motor cavity.
Further, the fluid injection pressure pipeline between described volume pump 4 and drive motor chamber is provided with retaining valve 7.
Further, the connecting line between described drive motor chamber and retaining valve 7 is provided with the pressure unit 8 for detected pressures data, described pressure unit 8 is connected with pressure digital display meter 9.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a canned motor pump control pressurer system, it is characterized in that comprising: for the pressure differential between detecting in canned motor pump porch and drive motor chamber, this differential pressure signal is carried out the pressure difference transmitter (1) that exports, described pressure difference transmitter (1) is arranged between canned motor pump and drive motor chamber;
Receive differential pressure signal that described pressure difference transmitter (1) transmits, carry out the intelligent controller (2) that signal transacting and data analysis control the opening and closing of pressure release electromagnetic valve (3) and volume pump (4) to the received signal;
This system also comprises driver module (5) and A.C. contactor (6), described intelligent controller (2) is connected with A.C. contactor (6), and described A.C. contactor (6) is connected with volume pump (4); Described intelligent controller (2) is also connected with driver module (5), and described driver module (5) is connected with pressure release electromagnetic valve (3),
Under duty: when canned motor pump pressure at inlet raises, described intelligent controller (2) is analyzed the differential pressure signal that pressure difference transmitter (1) transmits, when pressure differential between in canned motor pump porch and drive motor chamber is greater than the threshold value of setting, the A.C. contactor (6) that described intelligent controller (2) output instruction signal controls volume pump (4) motor power closes, start volume pump (4), described volume pump (4) pressurizes to drive motor cavity liquid injecting, pressure differential between in canned motor pump porch and drive motor chamber is when setting in threshold range, described intelligent controller (2) controls volume pump (4) and quits work,
When canned motor pump pressure at inlet reduces, described intelligent controller (2) is analyzed the differential pressure signal that pressure difference transmitter (1) transmits, when pressure differential between in canned motor pump porch and drive motor chamber is greater than the threshold value of setting, command signal is sent to driver module (5) by described intelligent controller (2), described driver module (5) controls pressure release electromagnetic valve (3) and opens, and reduces drive motor cavity pressure; Pressure differential between in canned motor pump porch and drive motor chamber is when setting in threshold range, and described intelligent controller (2) controls pressure release electromagnetic valve (3) and closes.
2. canned motor pump control pressurer system according to claim 1, is further characterized in that: the fluid injection pressure pipeline between described volume pump (4) and drive motor chamber is provided with retaining valve (7).
3. canned motor pump control pressurer system according to claim 2, be further characterized in that: the connecting line between described drive motor chamber and retaining valve (7) is provided with the pressure unit (8) for detected pressures data, described pressure unit (8) is connected with pressure digital display meter (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410625035.4A CN104391518A (en) | 2014-11-06 | 2014-11-06 | Shielding pump pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410625035.4A CN104391518A (en) | 2014-11-06 | 2014-11-06 | Shielding pump pressure control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104391518A true CN104391518A (en) | 2015-03-04 |
Family
ID=52609435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410625035.4A Pending CN104391518A (en) | 2014-11-06 | 2014-11-06 | Shielding pump pressure control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104391518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296323A (en) * | 2019-06-21 | 2019-10-01 | 中海石油气电集团有限责任公司 | A kind of pipeline cleaner discharge orifice dynamic duty device and its application method |
| CN112413395A (en) * | 2019-08-22 | 2021-02-26 | 中国石油天然气股份有限公司 | Liquid ammonia delivery system and method |
-
2014
- 2014-11-06 CN CN201410625035.4A patent/CN104391518A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296323A (en) * | 2019-06-21 | 2019-10-01 | 中海石油气电集团有限责任公司 | A kind of pipeline cleaner discharge orifice dynamic duty device and its application method |
| CN110296323B (en) * | 2019-06-21 | 2021-06-08 | 中海石油气电集团有限责任公司 | Dynamic working device for drainage hole of pipeline cleaner and using method thereof |
| CN112413395A (en) * | 2019-08-22 | 2021-02-26 | 中国石油天然气股份有限公司 | Liquid ammonia delivery system and method |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150304 |
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| WD01 | Invention patent application deemed withdrawn after publication |