CN216922466U

CN216922466U - Intelligent exhaust switching system for oil pump

Info

Publication number: CN216922466U
Application number: CN202122686953.6U
Authority: CN
Inventors: 黄新; 许立群; 任浩
Original assignee: Huaneng Wuhan Power Generation Co Ltd
Current assignee: Huaneng Wuhan Power Generation Co Ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-07-08
Anticipated expiration: 2031-11-04
Also published as: DE202022103001U1

Abstract

The utility model discloses an intelligent oil pump exhaust switching system which comprises a pipeline system, an oil liquid discharge device, an oil pump exhaust device, a detection device, an oil tank, a pressure regulating valve and a controller, wherein the oil pump exhaust device is connected with the oil pump exhaust device; fluid eduction gear includes first oil pump and second oil pump, first oil pump, second oil pump with oil pump exhaust passes through respectively pipe-line system with the oil tank intercommunication, detection device with pressure regulating valve sets up on the pipe-line system, the controller respectively with first oil pump, second oil pump, oil pump exhaust and detection device electric connection. The utility model can realize the intelligent pump-to-pump work of the oil pump through automatic exhaust and remote operation in the periodical switching work of the oil pump.

Description

Intelligent exhaust switching system for oil pump

Technical Field

The utility model relates to an exhaust system on an oil pumping pipeline, in particular to the technical field of an intelligent exhaust switching system of an oil pump.

Background

The dynamic and static friction parts of the rotating equipment are generally subjected to forced lubrication, and a circulating oil system comprises an oil tank, an oil pump, a filter, an oil cooler, an electric cabinet, instruments, pipelines, valves and the like. The oil pump mostly adopts CB series, and operating pressure is not high, and the arrangement mode is one for one and spare. The oil pump periodic switching system is an important work of equipment management, and when the oil pump is switched every time, an operator needs to operate and monitor in a control room, and due to structural reasons, the CB oil pump is easy to have air seep in during the standby period, so that the oil pump cannot establish oil pressure after being started.

The conventional oil pump is complex in periodic switching work and complex in operation flow, a lubricating oil system is easy to leak in the process of discharging air of the oil pump, the oil pressure is reduced, equipment is damaged, and meanwhile, potential safety hazards exist in the work of disassembling and assembling an outlet pipe of the oil pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an intelligent exhaust switching system of an oil pump, which solves the problem that when the existing oil pump is switched, the oil pressure can not be established after a backup pump is started because air is immersed in the backup oil pump during the standby period.

In order to achieve the purpose, the utility model provides the following scheme: the utility model provides an intelligent oil pump exhaust switching system which comprises a pipeline system, an oil discharging device, an oil pump exhaust device, a detection device, an oil tank, a pressure regulating valve and a controller, wherein the oil pump exhaust device is connected with the oil tank; fluid eduction gear includes first oil pump and second oil pump, first oil pump, second oil pump with oil pump exhaust passes through respectively pipe-line system with the oil tank intercommunication, detection device with pressure regulating valve sets up on the pipe-line system, the controller respectively with first oil pump, second oil pump, oil pump exhaust and detection device electric connection.

Preferably, the controller is configured to: when the pressure regulating valve or the detection device detects that the fluid of the pipeline system is not in a first control parameter, regulating the pressure regulating valve to the first control parameter;

when the first oil pump operates, the detection device detects that the fluid pressure of the pipeline system is a first threshold value, when the first oil pump switches the second oil pump, and when the detection device detects that the fluid pressure of the pipeline system is not less than a second threshold value, the second oil pump is judged to be switched successfully, the controller controls the first oil pump to stop operating, and the oil pump switching operation is completed;

when the detection device detects that the fluid pressure of the pipeline system is still equal to the first threshold value, the second oil pump is judged to be unsuccessfully switched, the controller controls the oil pump exhaust device to be started, when the detection device detects that the fluid pressure of the pipeline system is not less than the second threshold value, the second oil pump is judged to be successfully switched, the controller controls the oil pump exhaust device to be closed and the first oil pump to stop running, and the oil pump switching operation is completed;

and the logic sequence is the same as the above when the second oil pump is operated and the first oil pump is inverted to operate.

Preferably, the pipeline system comprises a main pipe, an oil outlet pipeline and an oil return pipeline, the main pipe is connected with the oil outlet pipeline, the oil return pipeline is connected with the oil outlet pipeline, the oil outlet pipeline and the oil return pipeline are respectively communicated with the oil tank, and the pressure regulating valve is installed on the main pipe.

Preferably, the oil outlet pipeline comprises a first oil outlet pipe and a second oil outlet pipe, the oil return pipeline comprises a first oil return pipe, a second oil return pipe and a third oil return pipe, one end of the first oil outlet pipe and one end of the second oil outlet pipe are respectively connected with the main pipe, and the other ends of the first oil outlet pipe and the second oil outlet pipe are respectively communicated with the oil tank; and one ends of the first oil return pipe, the second oil return pipe and the third oil return pipe are respectively connected with the first oil outlet pipe, the second oil outlet pipe and the mother pipe, and the other ends of the first oil return pipe, the second oil return pipe and the third oil return pipe are respectively communicated with the oil tank.

Preferably, the first oil outlet pipe is communicated with the first oil pump through the oil tank, and a first one-way valve is arranged on the first oil outlet pipe; the second oil outlet pipe is communicated with the second oil pump through the oil tank, and a second one-way valve is arranged on the second oil outlet pipe.

Preferably, the oil pump exhaust device comprises an exhaust solenoid valve, and the exhaust solenoid valve is mounted on both the first oil return pipe and the second oil return pipe.

Preferably, the first oil return pipe is connected with the first oil outlet pipe between the first check valve and the first oil pump; the second oil return pipe is connected with the second oil outlet pipe between the second one-way valve and the second oil pump.

Preferably, the detection device includes an oil pressure sensor.

Preferably, the controller is a DCS system.

The utility model discloses the following technical effects: according to the intelligent exhaust switching system for the oil pump, the controller controls the operation of the whole system and the switching work of the oil pump, the first oil pump and the second oil pump are arranged in a one-use one-standby mode, the first oil pump and the second oil pump are both provided with the oil pump exhaust devices, the mixture of air and oil in the first oil pump or the second oil pump to be switched can be discharged to the oil tank, the oil pressure is improved, so that the oil pump can be started smoothly, and the switching work of the oil pump is completed. The utility model can realize the intelligent pump-to-pump work of the oil pump through automatic exhaust and remote operation in the periodical switching work of the oil pump.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a logic diagram for switching oil pumps according to the present invention;

wherein: 1. a first oil pump; 2. a second oil pump; 3. a main pipe; 4. a first oil outlet pipe; 5. a second oil outlet pipe; 6. a first oil return pipe; 7. a second oil return pipe; 8. a third oil return pipe; 9. an oil tank; 10. a first check valve; 11. a pressure regulating valve; 12. a second one-way valve; 13. an exhaust solenoid valve; 14. an oil pressure sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-2, the utility model provides an intelligent exhaust switching system for an oil pump, which comprises a pipeline system, an oil liquid discharge device, an oil pump exhaust device, a detection device, an oil tank 9, a pressure regulating valve 11 and a controller; the oil liquid discharging device comprises a first oil pump 1 and a second oil pump 2, the first oil pump 1, the second oil pump 2 and an oil pump exhaust device are respectively communicated with the oil tank 9 through a pipeline system, a detection device and a pressure regulating valve 11 are arranged on the pipeline system, and a controller is respectively electrically connected with the first oil pump 1, the second oil pump 2, the oil pump exhaust device and the detection device; the intelligent oil pump exhaust switching system can complete automatic exhaust and remote operation by arranging the oil pump exhaust device in the periodic switching work of the oil pump, so that the intelligent oil pump can work.

It should be noted that the oil pressure of the whole lubricating oil system regulated by the pressure regulating valve 11 is not only the oil pressure of the intelligent oil pump exhaust switching system, but also the pressure regulating valve 11 cannot automatically regulate the oil pressure and needs manual regulation; the pressure regulating valve 11 is not regulated after being regulated, and if the pressure of the whole system is found to be low, the pressure is regulated to be normal.

In a further refinement, the controller is configured to: when the pressure regulating valve 11 or the detection device detects that the fluid of the pipeline system is not in the first control parameter, regulating the pressure regulating valve 11 to the first control parameter; when the first oil pump 1 runs, the detection device detects that the fluid pressure of the pipeline system is a first threshold value, when the first oil pump 1 switches the second oil pump 2, and when the detection device detects that the fluid pressure of the pipeline system is not less than a second threshold value, the second oil pump 2 is judged to be switched successfully, the controller controls the first oil pump 1 to stop running, and the oil pump switching work is completed; when the detection device detects that the fluid pressure of the pipeline system is still a first threshold value, the second oil pump 2 is judged to be failed to be switched, the controller controls the oil pump exhaust device to be started, when the detection device detects that the fluid pressure of the pipeline system is not less than a second threshold value, the second oil pump 2 is judged to be successfully switched, the controller controls the oil pump exhaust device to be closed and the first oil pump 1 to stop running, and the oil pump switching work is completed; the logic sequence is the same as that of the second oil pump 2 when the first oil pump 1 is switched to operate.

In the embodiment, the first control parameter is the oil pressure of the whole lubricating oil system, the first control parameter is generally determined according to the requirements of equipment, the equipment is different, the size of the first control parameter may also be different, and the actual data of the first control parameter is determined according to the actual condition of the whole lubricating oil system; the first threshold is the oil pressure of the pipeline system when the first oil pump 1 or the second oil pump 2 operates normally, and when the switching is performed, the oil pressure of the pipeline system is still the first threshold, which indicates that the switching is unsuccessful; the second threshold is a pressure standard for judging that the first oil pump 1 and the second oil pump 2 are successfully switched, and when the second threshold is in a specified pressure range, the outlet pressure of the oil pump assembly to be switched is judged to be established, and the oil pumps are successfully switched;

in order to determine to switch the oil pump more accurately, in this embodiment of the present application, the controller is specifically configured to: when the pressure regulating valve 11 or the detection device detects that the fluid pressure of the pipeline system is not 0.4MPa, regulating the pressure regulating valve 11 to be 0.4 MPa; when the first oil pump 1 operates, the detection device detects that the fluid pressure of the pipeline system is 0.4MPa, when the first oil pump 1 switches the second oil pump 2, and when the detection device detects that the fluid pressure of the pipeline system is not less than 0.5MPa, the second oil pump 2 is judged to be switched successfully, the controller controls the first oil pump 1 to stop operating, and the switching operation of the oil pumps is completed;

when the first oil pump 1 switches the second oil pump 2, when the detection device detects that the fluid pressure of the pipeline system is still 0.4MPa, the second oil pump 2 is judged to be failed to switch, the controller controls the oil pump exhaust device to be started, when the detection device detects that the fluid pressure of the pipeline system is increased to be more than or equal to 0.5MPa, the second oil pump 2 is judged to be successfully switched, the controller controls the oil pump exhaust device to be closed and the first oil pump 1 to stop running, and the oil pump switching operation is completed; the logic sequence is the same as that of the second oil pump 2 when the first oil pump 1 is switched to operate.

It should be noted that the scheme of the above preferred embodiment is only a specific implementation manner in the present application, and other manners of adjusting the sizes of the first threshold and the second threshold when the oil pump is switched according to the difference of the first control parameter all belong to the protection scope of the present application.

According to a further optimization scheme, the pipeline system comprises a main pipe 3, an oil outlet pipeline and an oil return pipeline, the main pipe 3 is connected with the oil outlet pipeline, the oil return pipeline is connected with the oil outlet pipeline, the oil outlet pipeline and the oil return pipeline are respectively communicated with an oil tank 9, and a pressure regulating valve 11 is installed on the main pipe 3;

according to a further optimization scheme, the oil outlet pipeline comprises a first oil outlet pipe 4 and a second oil outlet pipe 5, the oil return pipeline comprises a first oil return pipe 6, a second oil return pipe 7 and a third oil return pipe 8, one end of each of the first oil outlet pipe 4 and the second oil outlet pipe 5 is connected with the main pipe 3, and the other end of each of the first oil outlet pipe 4 and the second oil outlet pipe 5 is communicated with the oil tank 9;

it should be noted that, the oil discharging device discharges the oil in the oil tank 9 through the oil discharging pipeline, and when there is a mixture of air and oil in the oil discharging device, the oil pump discharging device discharges the mixture of air and oil back into the oil tank 9 through the oil returning pipeline; the pressure regulating valve 11 is specifically arranged on a pipeline system comprising a main pipe 3, and the main pipe 3 is connected with an oil pipeline outside the system; one ends of a first oil return pipe 6, a second oil return pipe 7 and a third oil return pipe 8 are respectively connected with the first oil outlet pipe 4, the second oil outlet pipe 5 and the main pipe 3, and the other ends are respectively communicated with an oil tank 9; the third oil return pipe 8 can return oil on the main pipe 3 that has not been communicated to the system external oil line to the oil tank 9.

According to the further optimization scheme, the first oil outlet pipe 4 is communicated with the first oil pump 1 through an oil tank 9, and a first one-way valve 10 is arranged on the first oil outlet pipe 4; the second oil outlet pipe 5 is communicated with the second oil pump 2 through an oil tank 9, and a second one-way valve 12 is arranged on the second oil outlet pipe 5.

According to a further optimized scheme, the oil pump exhaust device comprises an exhaust electromagnetic valve 13, and the exhaust electromagnetic valve 13 is mounted on both the first oil return pipe 6 and the second oil return pipe 7;

it should be noted that the controller is electrically connected to the first oil pump 1, the second oil pump 2 and the exhaust solenoid valve 13, the controller controls the start and stop of the first oil pump 1 and the second oil pump 2, and controls the opening and closing of the exhaust solenoid valve 13, and the first check valve 10 and the second check valve 12 enable oil to flow only in the outlet direction of the first oil outlet pipe 4 and the second oil outlet pipe 5; when the oil pressure is low and the exhaust solenoid valve 13 needs to be opened to discharge the air and oil mixture back to the oil tank 9, the air and oil mixture in the oil pump is discharged to the oil tank.

In a further optimized scheme, the first oil return pipe 6 is connected with the first oil outlet pipe 4 between the first check valve 10 and the first oil pump 1; the second oil return pipe 7 is connected with the second oil outlet pipe 5 between the second one-way valve 12 and the second oil pump 2;

it should be noted that, a specific connection manner is that a first oil return pipe 6 is connected to the first oil outlet pipe 4 between the first check valve 10 and the first oil pump 1, and an exhaust solenoid valve 13 is installed on the first oil return pipe 6 to control the circulation of the air and oil mixture; a second oil return pipe 7 is connected to the second oil outlet pipe 5 between the second check valve 12 and the second oil pump 2, and an exhaust electromagnetic valve 13 is installed on the second oil return pipe 7 to control the circulation of the air and oil mixture.

In a further preferred embodiment, the detection device comprises an oil pressure sensor 14.

In a further optimization scheme, the controller is a DCS system.

It should be noted that the oil pressure sensor 14 detects the oil pressure on the main pipe 3 as a basis for determining whether the oil pump is operating or not or as a basis for determining whether the oil pump is successfully switched.

In order to determine to switch the oil pump more accurately, in this embodiment of the application, the DCS system is further specifically configured to: when the pressure regulating valve 11 or the oil pressure sensor 14 detects that the fluid pressure of the main pipe 3 is not 0.4MPa, regulating the pressure regulating valve 11 to be 0.4 MPa; when the first oil pump 1 operates, the oil pressure sensor 14 detects that the pressure of the main pipe 3 is 0.4MPa, when the first oil pump 1 switches the second oil pump 2, the oil pressure sensor 14 detects that the pressure of the main pipe 3 is more than or equal to 0.5MPa, the switching success of the second oil pump 2 is judged, the DCS controls the first oil pump 1 to stop operating, and the oil pump switching operation is completed;

when the first oil pump 1 switches the second oil pump 2, when the oil pressure sensor 14 detects that the pressure of the main pipe 3 is still 0.4MPa, the second oil pump 2 is judged to be failed to switch, the DCS system controls the exhaust electromagnetic valve 13 on the second oil return pipe 7 to be opened, when the oil pressure sensor 14 detects that the pressure of the main pipe 3 rises and the pressure of the main pipe 3 is not less than 0.5MPa, the second oil pump 2 is judged to be successfully switched, the DCS system controls the exhaust electromagnetic valve 13 to be closed and the first oil pump 1 to stop running, and the oil pump switching work is completed; the logic sequence is the same as that of the second oil pump 2 when the first oil pump 1 is switched to operate.

By applying the technical scheme, when the first oil pump 1 and the second oil pump 2 are switched, the controller detects the oil pressure on the main pipe 3 through the oil pressure sensor 14, judges whether the oil pumps are switched successfully or not according to the oil pressure, and discharges the air and oil mixture in the oil pumps to be switched to the oil tank 9 through the oil return pipeline through the exhaust solenoid valve 13.

The first oil pump 1, the second oil pump 2, the exhaust solenoid valve 13, the oil pressure sensor 14 and the pressure regulating valve 11 involved in the above embodiments are all products and electrical components in the prior art, and the electrical connection control modes between the oil pressure sensor and the DCS system are all the prior art and are not described again.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced item or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above embodiments are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides an oil pump intelligence exhaust switching system which characterized in that: the device comprises a pipeline system, an oil liquid discharge device, an oil pump exhaust device, a detection device, an oil tank (9), a pressure regulating valve (11) and a controller; fluid eduction gear includes first oil pump (1) and second oil pump (2), first oil pump (1), second oil pump (2) and oil pump exhaust apparatus passes through respectively pipe-line system with oil tank (9) intercommunication, detection device with pressure regulating valve (11) set up on the pipe-line system, the controller respectively with first oil pump (1), second oil pump (2), oil pump exhaust apparatus and detection device electric connection.

2. The intelligent exhaust switching system for the oil pump as claimed in claim 1, wherein: the controller is configured to: when the pressure regulating valve (11) or the detection device detects that the fluid of the pipeline system is not in a first control parameter, regulating the pressure regulating valve (11) to the first control parameter;

when the first oil pump (1) operates, the detection device detects that the fluid pressure of the pipeline system is a first threshold value, when the first oil pump (1) switches the second oil pump (2), and when the detection device detects that the fluid pressure of the pipeline system is not less than a second threshold value, the second oil pump (2) is judged to be switched successfully, the controller controls the first oil pump (1) to stop operating, and the oil pump switching operation is completed;

when the detection device detects that the fluid pressure of the pipeline system is still the first threshold value, the second oil pump (2) is judged to be unsuccessfully switched, the controller controls the oil pump exhaust device to be started, when the detection device detects that the fluid pressure of the pipeline system is not less than the second threshold value, the second oil pump (2) is judged to be successfully switched, the controller controls the oil pump exhaust device to be closed and the first oil pump (1) to stop running, and the oil pump switching work is completed;

and the second oil pump (2) operates in a reverse mode, and when the first oil pump (1) operates, the logic sequence is the same as that of the first oil pump.

3. The intelligent exhaust switching system for the oil pump as claimed in claim 1, wherein: the pipeline system comprises a main pipe (3), an oil outlet pipeline and an oil return pipeline, the main pipe (3) is connected with the oil outlet pipeline, the oil return pipeline is connected onto the oil outlet pipeline, the oil outlet pipeline and the oil return pipeline are respectively communicated with the oil tank (9), and the pressure regulating valve (11) is installed on the main pipe (3).

4. The intelligent exhaust switching system for oil pumps as claimed in claim 3, wherein: the oil outlet pipeline comprises a first oil outlet pipe (4) and a second oil outlet pipe (5), the oil return pipeline comprises a first oil return pipe (6), a second oil return pipe (7) and a third oil return pipe (8), one end of the first oil outlet pipe (4) and one end of the second oil outlet pipe (5) are respectively connected with the main pipe (3), and the other end of the first oil outlet pipe and the other end of the second oil outlet pipe are respectively communicated with the oil tank (9); and one end of the first oil return pipe (6), one end of the second oil return pipe (7) and one end of the third oil return pipe (8) are respectively connected with the first oil outlet pipe (4), the second oil outlet pipe (5) and the main pipe (3), and the other ends of the first oil return pipe, the second oil return pipe and the main pipe are respectively communicated with the oil tank (9).

5. The intelligent exhaust switching system for oil pumps as claimed in claim 4, wherein: the first oil outlet pipe (4) is communicated with the first oil pump (1) through the oil tank (9), and a first one-way valve (10) is arranged on the first oil outlet pipe (4); the second oil outlet pipe (5) is communicated with the second oil pump (2) through the oil tank (9), and a second one-way valve (12) is arranged on the second oil outlet pipe (5).

6. The intelligent exhaust switching system for oil pumps as claimed in claim 5, wherein: the oil pump exhaust device comprises an exhaust solenoid valve (13), and the exhaust solenoid valve (13) is installed on the first oil return pipe (6) and the second oil return pipe (7).

7. The intelligent exhaust switching system for oil pumps as claimed in claim 6, wherein: the first oil return pipe (6) is connected with the first oil outlet pipe (4) between the first one-way valve (10) and the first oil pump (1); the second oil return pipe (7) is connected with the second one-way valve (12) and the second oil outlet pipe (5) between the second oil pump (2).

8. The intelligent exhaust switching system for the oil pump as claimed in claim 1, wherein: the detection device includes an oil pressure sensor (14).

9. The intelligent exhaust switching system for oil pumps as claimed in claim 1, wherein: the controller is a DCS system.