CN203374507U - Oil pressure control system in fan oil station - Google Patents
Oil pressure control system in fan oil station Download PDFInfo
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- CN203374507U CN203374507U CN201320461231.3U CN201320461231U CN203374507U CN 203374507 U CN203374507 U CN 203374507U CN 201320461231 U CN201320461231 U CN 201320461231U CN 203374507 U CN203374507 U CN 203374507U
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Abstract
The utility model provides an oil pressure control system in a fan oil station. The oil pressure control system in the fan oil station comprises two oil pump control loops which are arranged to be in parallel connection. Each oil pump control loop comprises an oil pump interlock control switch which is in interlock control with an oil station outlet oil pressure switch and an oil pump, and further comprises a reset button which is connected between the oil pump interlock control switch and the oil pump in series. According to the oil pressure control system in the fan oil station, when a standby oil pump is started in an interlock mode due to low oil pressure of an oil station outlet, oil pressure rises, and high signals of the oil pressure of the oil station outlet are emitted, the standby oil pump can not be stopped in an interlock mode, an oil pressure high warning device of an oil pressure high warning loop gives an alarm on a DCS image, and only when the reset buttons are pressed and the oil pressure of the oil station outlet is high, the standby oil pump can be stopped. If low signals of the oil pressure of the oil station outlet are generated again at the moment, the standby oil pump can be started again, operation or maintenance personnel can check equipment analysis reasons in the scene, frequent starting and stopping of the standby oil pump in the period can be avoided, and meanwhile the facts that the oil pressure in the oil station is normal and the fan can operate safely are guaranteed.
Description
Technical field
The utility model belongs to power industry oil pressure control technique field, is specifically related to a kind of blower fan petrol station oil pressure control system.
Background technique
The blower fan petrol station can be divided into lubricating oil station and hydraulic oil unit usually.Lubricating oil station is a kind of pressure lubrication equipment, and fan bearing is carried out to pressure lubrication, bearing is also had to cooling action simultaneously.Some large fan of thermal power plant (as gas fan etc.) be to realize by controlling the movable vane aperture control that blower fan is exerted oneself, and the power of movable vane motion is provided by hydraulic oil unit.Sometimes a petrol station also can realize the function of above-mentioned two kinds of petrol stations.So the blower fan petrol station is the important supplementary equipment of large fan, it can be lubricated with cooling fan bearing, the power that simultaneously provides wind motor leaf to rotate, the size of exerting oneself to control blower fan.The security of operation of the reliability direct relation blower fan of blower fan petrol station and reliable control, for guaranteeing the reliability of petrol station, every petrol station is provided with two oil pumps usually: a main oil pump, an emergency bearing oil pump, this main oil pump and emergency bearing oil pump can regularly switch.
At present, the interlocked control mode of two oil pumps of blower fan petrol station and petrol station outlet oil pressure can be divided into following two kinds: (1) is sent out when petrol station outlet oil pressure low signal, is switched to emergency bearing oil pump, and main oil pump stops; (2) when petrol station outlet oil pressure low signal, send out, main pump keeps starting, the stand by pump interlocked startup; When the high signal of petrol station outlet oil pressure is sent out, main pump keeps starting, and stand by pump stops.Usually the low reason of petrol station outlet oil pressure has: 1. electric the or mechanical part of main oil pump breaks down; 2. the filter screen of petrol station has blocking phenomenon, or the pressure of manual tune approaches the pressure alarm value, triggering pressure low signal when pressure surge.There is following shortcoming in two kinds of above-mentioned control modes: the first control mode; when low former of petrol station outlet oil pressure because during the second situation; obvious switching oil pump can not make the outlet oil pressure of petrol station recover normal or be that inspection failure judgement reason is raced against time; because itself does not have fault main oil pump, the switching oil pump can not play the effect of improvement.The control system figure of the second control mode as shown in Figure 1, comprise two oil pump control loops that are arranged in parallel, active and standby oil pump switching circuit and low fuel pressure alarm circuit, described oil pump control loop comprise successively serial connection with the oil pump interlocked control switch of petrol station outlet oil pressure pressure switch interlocked control, the normally closed high Signal-controlled switch of oil pressure and oil pump, two oil pump control loops are respectively A pump control loop and B pump control loop; Be provided with active and standby switch knob SW on described active and standby oil pump switching circuit, the switching for main oil pump between A, B pump; Described low fuel pressure alarm circuit comprises low fuel pressure Signal-controlled switch and the low fuel pressure warning device of serial connection.The A pump of take is example as main oil pump, B pump as emergency bearing oil pump, the working principle of this control system is as follows: active and standby switch knob SW switches to A pump control loop, the A pump is often opened, and when petrol station outlet oil pressure low signal sends, the low fuel pressure Signal-controlled switch on the low fuel pressure alarm circuit is closed to be connected, send alarm signal, interlocked startup B pump, until the petrol station outlet oil pressure recovers normal, send the high signal of oil pressure simultaneously, the high Signal-controlled switch of oil pressure on B pump control loop disconnects, and stops the B pump.It is more common that this control mode possesses the lubricated petrol station with the hydraulic pressure oil supply function at the same time, because the rotation of movable vane can make fuel feeding increase suddenly, for guaranteeing that oil pressure is stable, may occur starting emergency bearing oil pump temporarily, stops emergency bearing oil pump when pressure is normal.This kind of control mode seems reasonable, the shortcoming that there is no the first control mode, but there is a significant deficiency in this control mode: when low former of petrol station outlet oil pressure because during the second situation, be that main oil pump operation and petrol station outlet pressure are when low, emergency bearing oil pump starts, then the high signal of petrol station outlet oil pressure is sent out usually, and emergency bearing oil pump stops; After emergency bearing oil pump stops; the petrol station outlet oil pressure reduces; emergency bearing oil pump starts ... emergency bearing oil pump is repeatedly starting and stopping (empirical value: emergency bearing oil pump was understood start and stop more than twice in 5 seconds) so fast; will cause the heat protection action of motor in one minute or directly damage the contactor of emergency bearing oil pump motor; when serious, motor is caused to damage; can, because pressure low delay protection action causes the blower fan tripping operation, cause larger impact afterwards.
The model utility content
The technical problems to be solved in the utility model is to provide a kind of blower fan petrol station oil pressure control system, improvement by structure, when emergency bearing oil pump hangs down by interlocked startup because of the petrol station outlet oil pressure, can not cause the frequent start-stop of emergency bearing oil pump because of the variation of oil pressure, avoid emergency bearing oil pump and electrical equipment thereof are caused to damage.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of blower fan petrol station oil pressure control system, comprise two oil pump control loops that are arranged in parallel, described oil pump control loop comprises oil pump interlocked control switch and the oil pump with petrol station outlet oil pressure pressure switch interlocked control, and described oil pump control loop also comprises the reset button be serially connected with between described oil pump interlocked control switch and oil pump.
Above-mentioned blower fan petrol station oil pressure control system also comprises that the active and standby oil pump be arranged in parallel with two described oil pump control loops moves alarm circuit simultaneously, and this active and standby oil pump moves alarm circuit simultaneously and moves warning device serial connection by main oil pump control switch, emergency bearing oil pump control switch and active and standby oil pump simultaneously and form.
Above-mentioned blower fan petrol station oil pressure control system also comprises the high alarm circuit of oil pressure be arranged in parallel with two described oil pump control loops, and the high alarm circuit of this oil pressure is formed by the high Signal-controlled switch of oil pressure and the high warning device serial connection of oil pressure.
Above-mentioned blower fan petrol station oil pressure control system also comprises the active and standby oil pump switching circuit be arranged in parallel with two described oil pump control loops, be provided with active and standby switch knob on described active and standby oil pump switching circuit, article two, described oil pump control loop is called main oil pump control loop and emergency bearing oil pump control loop, and described active and standby switch knob often contacts with described main oil pump control loop.
Above-mentioned blower fan petrol station oil pressure control system also comprises the low fuel pressure alarm circuit be arranged in parallel with two described oil pump control loops, and this low fuel pressure alarm circuit is formed by low fuel pressure Signal-controlled switch and low fuel pressure warning device serial connection.
Wherein, described oil pump interlocked control switch comprises oil pump control switch in parallel and low fuel pressure Signal-controlled switch.
Wherein, described active and standby switch knob is single-pole double-throw switch (SPDT).
The beneficial effect of technique scheme of the present utility model is as follows:
In such scheme, cancel the high Signal-controlled switch of original oil pressure in the emergency bearing oil pump control loop, increase long-range or local reset button, and set up the high alarm circuit of oil pressure in control system, when emergency bearing oil pump hangs down by interlocked startup because of the petrol station outlet oil pressure, after oil pressure rises, when the high signal of petrol station outlet oil pressure sends, emergency bearing oil pump can not interlocked and stop, but the high warning device of the oil pressure of the high alarm circuit of oil pressure reports to the police on the DCS picture, when press reset button and petrol station outlet oil pressure when high emergency bearing oil pump just can stop; If now petrol station outlet oil pressure low signal occurs again, emergency bearing oil pump can start again, the active and standby oil pump that active and standby oil pump moves alarm circuit simultaneously moves warning device simultaneously and sends alarm signal, operation or maintainer can arrive site inspection device analysis reason, can not cause during this time the frequent start-stop of emergency bearing oil pump, guarantee that the petrol station oil pressure is normal, the blower fan safe operation simultaneously.
The accompanying drawing explanation
Fig. 1 is existing blower fan petrol station oil pressure control system figure in the utility model background technique;
The blower fan petrol station oil pressure control system figure that Fig. 2 is the utility model embodiment one.
Embodiment
For making the technical problems to be solved in the utility model, technological scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The utility model can cause the damage problem to emergency bearing oil pump and electrical equipment thereof because the variation of oil pressure cause the frequent start-stop of emergency bearing oil pump for existing blower fan petrol station oil pressure control system, and the blower fan petrol station oil pressure control system after a kind of the improvement is provided.
As shown in Figure 2, embodiment of the present utility model provides a kind of blower fan petrol station oil pressure control system, comprise that two oil pump control loops that are arranged in parallel, active and standby oil pump switching circuit, active and standby oil pump move alarm circuit, the high alarm circuit of oil pressure and low fuel pressure alarm circuit simultaneously, article two, described oil pump control loop is respectively main oil pump control loop and emergency bearing oil pump control loop, in the present embodiment, described main oil pump control loop is designated as A pump control loop, and described standby control loop is designated as B pump control loop.
Described A pump control loop is connected in series and is formed by A pump interlocked control switch, reset button RSET and A pump PUMPA with petrol station outlet oil pressure pressure switch 11 interlocked control.Wherein, described A pump interlocked control switch comprises A pump (PUMPA) control switch in parallel (being please an English name that is different from " PUMPA " of this A pump control switch definition) and low fuel pressure Signal-controlled switch pSL.
Described B pump control loop is connected in series and is formed by B pump interlocked control switch, reset button and B pump PUMPB with petrol station outlet oil pressure pressure switch 11 interlocked control.Wherein, described B pump interlocked control switch comprises B pump (PUMPB) control switch in parallel (being please an English name that is different from " PUMPB " of this B pump control switch definition) and low fuel pressure Signal-controlled switch pSL.
Be provided with active and standby switch knob SW on described active and standby oil pump switching circuit, this active and standby switch knob SW is single-pole double-throw switch (SPDT), it often contacts with described main oil pump control loop, in the present embodiment, described active and standby switch knob SW often contacts with described A pump control circuit, guarantees to work as the A pump of main oil pump always.
Described active and standby oil pump moves alarm circuit simultaneously and moves warning device AL1 serial connection by main oil pump control switch, emergency bearing oil pump control switch and active and standby oil pump simultaneously and form.In the present embodiment, described active and standby oil pump moves alarm circuit simultaneously and moves warning device AL1 serial connection by A pump (PUMPA) control switch, B pump (PUMPB) control switch and active and standby oil pump simultaneously and form.
The high alarm circuit of described oil pressure is formed by the high Signal-controlled switch pSU of oil pressure and the high warning device AL3 serial connection of oil pressure.
Described low fuel pressure alarm circuit is formed by low fuel pressure Signal-controlled switch pSL and low fuel pressure warning device AL2 serial connection.
The utility model is cancelled the high Signal-controlled switch of original oil pressure, is increased long-range or local reset button in the emergency bearing oil pump control loop, and set up the high alarm circuit of oil pressure in control system, when emergency bearing oil pump hangs down by interlocked startup because of the petrol station outlet oil pressure, after oil pressure rises, when the high signal of petrol station outlet oil pressure sends, emergency bearing oil pump can not interlocked and stop, but the high warning device of the oil pressure of the high alarm circuit of oil pressure reports to the police on the DCS picture, when press reset button and petrol station outlet oil pressure when high emergency bearing oil pump just can stop; If now petrol station outlet oil pressure low signal occurs again, emergency bearing oil pump can start again, the active and standby oil pump that active and standby oil pump moves alarm circuit simultaneously moves warning device simultaneously and sends alarm signal, operation or maintainer can arrive site inspection device analysis reason, can not cause during this time the frequent start-stop of emergency bearing oil pump, guarantee that the petrol station oil pressure is normal, the blower fan safe operation simultaneously.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a blower fan petrol station oil pressure control system, comprise two oil pump control loops that are arranged in parallel, described oil pump control loop comprises oil pump interlocked control switch and the oil pump with petrol station outlet oil pressure pressure switch interlocked control, it is characterized in that, described oil pump control loop also comprises the reset button be serially connected with between described oil pump interlocked control switch and oil pump.
2. blower fan petrol station oil pressure control system according to claim 1, it is characterized in that, also comprise that the active and standby oil pump be arranged in parallel with two described oil pump control loops moves alarm circuit simultaneously, this active and standby oil pump moves alarm circuit simultaneously and moves warning device serial connection by main oil pump control switch, emergency bearing oil pump control switch and active and standby oil pump simultaneously and form.
3. blower fan petrol station oil pressure control system according to claim 1 and 2, it is characterized in that, also comprise the high alarm circuit of oil pressure be arranged in parallel with two described oil pump control loops, the high alarm circuit of this oil pressure is formed by the high Signal-controlled switch of oil pressure and the high warning device serial connection of oil pressure.
4. blower fan petrol station oil pressure control system according to claim 1 and 2, it is characterized in that, also comprise the active and standby oil pump switching circuit be arranged in parallel with two described oil pump control loops, be provided with active and standby switch knob on described active and standby oil pump switching circuit, article two, described oil pump control loop is called main oil pump control loop and emergency bearing oil pump control loop, and described active and standby switch knob often contacts with described main oil pump control loop.
5. blower fan petrol station oil pressure control system according to claim 1 and 2, it is characterized in that, also comprise the low fuel pressure alarm circuit be arranged in parallel with two described oil pump control loops, this low fuel pressure alarm circuit is formed by low fuel pressure Signal-controlled switch and low fuel pressure warning device serial connection.
6. blower fan petrol station oil pressure control system according to claim 1, is characterized in that, described oil pump interlocked control switch comprises oil pump control switch in parallel and low fuel pressure Signal-controlled switch.
7. blower fan petrol station oil pressure control system according to claim 4, is characterized in that, described active and standby switch knob is single-pole double-throw switch (SPDT).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461231.3U CN203374507U (en) | 2013-07-30 | 2013-07-30 | Oil pressure control system in fan oil station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461231.3U CN203374507U (en) | 2013-07-30 | 2013-07-30 | Oil pressure control system in fan oil station |
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| Publication Number | Publication Date |
|---|---|
| CN203374507U true CN203374507U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320461231.3U Expired - Fee Related CN203374507U (en) | 2013-07-30 | 2013-07-30 | Oil pressure control system in fan oil station |
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| CN (1) | CN203374507U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237287A (en) * | 2018-11-09 | 2019-01-18 | 四川川润液压润滑设备有限公司 | A kind of method that lubricating oil system failure of pump determines and standby usage pump automatically switches |
| CN110675836A (en) * | 2019-10-18 | 2020-01-10 | 合肥维信诺科技有限公司 | Scanning circuit, driving method thereof and display panel |
| CN112253518A (en) * | 2020-10-15 | 2021-01-22 | 国电泉州热电有限公司 | Fan moving blade control method and device |
| CN112922832A (en) * | 2021-02-04 | 2021-06-08 | 华能（天津）煤气化发电有限公司 | Quick switching method for screw oil pump |
-
2013
- 2013-07-30 CN CN201320461231.3U patent/CN203374507U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237287A (en) * | 2018-11-09 | 2019-01-18 | 四川川润液压润滑设备有限公司 | A kind of method that lubricating oil system failure of pump determines and standby usage pump automatically switches |
| CN110675836A (en) * | 2019-10-18 | 2020-01-10 | 合肥维信诺科技有限公司 | Scanning circuit, driving method thereof and display panel |
| CN110675836B (en) * | 2019-10-18 | 2021-08-27 | 合肥维信诺科技有限公司 | Scanning circuit, driving method thereof and display panel |
| CN112253518A (en) * | 2020-10-15 | 2021-01-22 | 国电泉州热电有限公司 | Fan moving blade control method and device |
| CN112253518B (en) * | 2020-10-15 | 2022-01-07 | 国能(泉州)热电有限公司 | Fan moving blade control method and device |
| CN112922832A (en) * | 2021-02-04 | 2021-06-08 | 华能（天津）煤气化发电有限公司 | Quick switching method for screw oil pump |
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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: 20140101 Termination date: 20140730 |
|
| EXPY | Termination of patent right or utility model |