CN115824901A

CN115824901A - Anti-bubble type lubricating oil online monitoring method and device

Info

Publication number: CN115824901A
Application number: CN202211435145.5A
Authority: CN
Inventors: 李岩
Original assignee: Yunze Technology Shenyang Co ltd
Current assignee: Yunze Technology Shenyang Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-21

Abstract

An anti-bubble type lubricating oil on-line monitoring method and a device thereof, wherein the monitoring method comprises the following steps: connecting oil in the tested oil path into a pressurizing system, and pressurizing the tested oil through the pressurizing system; and (3) connecting the pressurized oil to be detected into a granularity detector for detection, discharging the oil through the detector, reducing the pressure, and then refluxing the oil to be detected into an oil path. This scheme is through optimal design, through set up pressurization and backpressure system on the series connection pipeline between surveyed oil circuit and lubricating oil granularity detector, guarantees that lubricating oil has certain pressure when the granularity detector inner tube way of flowing through, under the effect of pressure, makes the diameter of the bubble that lubricating oil contains compressed to the lower limit that need not detect, has resisted the bubble that contains in the lubricating oil and has brought the interference to granularity detector during operation, improves and detects the precision.

Description

Anti-bubble type lubricating oil online monitoring method and device

Technical Field

The invention relates to the technical field of lubricating oil monitoring, in particular to an anti-bubble lubricating oil online monitoring method and device.

Background

As is well known, when a low-pressure hydraulic and lubricating system works, for example, when a gear box of a wind power system runs at a high speed, oil liquid can be stirred by a splash type lubricating mode, a large number of bubbles are generated and mixed into high-viscosity lubricating oil and are not easy to dissipate, an oil liquid particle size detector usually detects that the particle size of particles in the oil liquid is more than 1 mu m and is limited by the principle of oil liquid shading method detection, when the oil liquid containing bubbles with the particle size larger than 1 mu m passes through the laser particle size detector, the oil liquid can be mistakenly considered as pollutant particles, the number of pollutants in the detection result can be increased more than the actual number, and the error of the counting result is overlarge and extremely inaccurate.

Disclosure of Invention

In order to solve the technical problems, the invention provides an anti-bubble type lubricating oil online monitoring method and an anti-bubble type lubricating oil online monitoring device.

The technical scheme adopted by the invention is as follows: an anti-bubble type lubricating oil on-line monitoring method comprises the following steps:

s1, connecting oil in a detected oil path into a pressurizing system, and pressurizing the detected oil through the pressurizing system;

and S2, connecting the pressurized oil to be detected into a granularity detector for detection, discharging the oil through the detector, reducing the pressure, and then refluxing the oil to be detected into an oil path.

Preferably, in step S1, when the oil is pressurized, it is required to satisfy: the diameter of the air bubbles in the oil solution to be measured is reduced to 1 μm or less.

Preferably, in step S2, a back pressure unit is disposed on a discharge oil path of the particle size detector, and the back pressure unit keeps the detected flowing oil constant under the current pressure in the detection process.

The device used in the anti-bubble type lubricating oil online monitoring method comprises a granularity detector, wherein an oil return interface and an oil inlet interface are arranged on a detected oil path, the oil inlet interface is connected to an oil inlet of a gear pump through an oil pipe and is divided into two paths after passing through the gear pump, one path is connected to a safety valve, when the pressure of the oil path is abnormal or the pressure of a pipeline exceeds the set pressure of the safety valve, the safety valve is opened, and lubricating oil flows back to the oil return interface through the safety valve; and the other path is connected with a granularity detector, and the detected lubricating oil flows back to the detected oil path after passing through a back pressure valve and an oil return interface.

Preferably, the oil pressure in the oil passage between the back pressure valve and the safety valve is provided by a gear pump.

Preferably, the back pressure valve is set in the range of 30-60bar, and the safety valve is set in the range of 70-100bar.

As the preferred scheme, be equipped with self sealss quick-operation joint on the oil circuit between granularity detector and gear pump and back pressure valve respectively.

The invention has the beneficial effects that:

according to the scheme, through the optimized design, a pressurizing and back-pressure system is arranged on a serial pipeline between a detected oil way and the lubricating oil granularity detector, so that the lubricating oil has certain pressure when flowing through an internal pipeline of the granularity detector, the diameter of bubbles contained in the lubricating oil is compressed to a lower limit which is not required to be detected under the action of the pressure, the interference of the bubbles contained in the lubricating oil on the granularity detector during working is resisted, and the detection precision is improved; the main technical effects are as follows:

1. in the scheme, the pressurizing and back pressure system consisting of the gear pump, the safety valve and the back pressure valve is arranged on the working pipeline of the granularity detector, the operation is reliable, and the pressure can be adjusted according to the requirement.

2. In this scheme, be equipped with respectively on the oil circuit between granularity detector and gear pump and back pressure valve and proclaim oneself quick-operation joint, connect through mated proclaim oneself quick-operation joint, have the installation and dismantle convenient advantage.

3. In this scheme, set up the redundant quick-operation joint of proclaiming oneself, prevent to proclaiming oneself the wearing and tearing that the frequent installation of quick-operation joint was dismantled and is brought, conveniently change check point pipeline, improve the security of system's work.

4. In the scheme, pressure measuring points are arranged in front of and behind the granularity detector, and the pressure condition in the pipeline is fed back in real time.

5. In this scheme, give the fluid flow that the granularity detector fuel feeding made to enter into the granularity detector through one set of oil pump motor more stable, it is littleer to the testing result influence.

Drawings

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

FIG. 1 is a schematic view of the structure of an apparatus used in the present invention.

Reference numerals: 1. the oil way to be measured, 11, oil return interface, 12, oil feed interface, 2, gear pump, 3, motor, 4, relief valve, 5, back pressure valve, 6, reserve interface, 7, self sealss quick-operation joint II, 8, granularity detector, 9, self sealss quick-operation joint I.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.

The working principle of the scheme is as follows:

the method utilizes the property of easy compression of gas, when oil containing bubbles passes through a pressurizing system, the oil rich in bubbles is pressurized, the bubbles are compressed to be below 1 mu m in particle size, the bubbles are not counted as particles at the moment, the influence of the bubbles on the oil particle size counting result is effectively reduced, the pollution monitoring precision of oil is greatly improved, when the detected lubricating oil is discharged into a pipeline again from a detector, natural depressurization is realized, the bubbles in the oil recover to the original volume, and then the oil flows back into an oil way again.

An anti-bubble type lubricating oil on-line monitoring method comprises the following steps:

step one, setting a section of oil path in an oil supply state as a detected oil path, connecting oil in the detected oil path into an oil path of a pressurization system, and pressurizing the detected oil path through the pressurization system so that the diameter of bubbles contained in lubricating oil is compressed to a lower limit which is not detected;

and step two, connecting the pressurized oil to be detected into a granularity detector for detection, reducing the pressure after being discharged by the detector, recovering bubbles in the oil to the original volume again after the pressure is reduced, and then refluxing the oil to be detected into the oil path.

This scheme, in step one, when fluid is by the pressure boost, need satisfy: the diameter of the air bubbles in the oil solution to be measured is reduced to 1 μm or less.

The measured oil circuit described in the scheme refers to an oil circuit with oil in a flowing state, and is an online oil circuit.

According to the scheme, in the second step, the back pressure unit is arranged on the oil discharge channel of the granularity detector, and the detected oil is kept unchanged to the current pressure in the detection process through the back pressure unit.

Examples 1,

The structure of the device used in the method is described in detail below with reference to the accompanying drawings:

as shown in fig. 1, an oil return interface 11 and an oil inlet interface 12 are arranged on a tested oil path 1 in a working state, the oil inlet interface 12 is connected to an oil inlet of a gear pump 2 through an oil pipe, the gear pump is provided with power by a motor 3, an oil outlet pipe of the gear pump 2 is divided into two paths, one path is connected to a safety valve 4, when the pressure of a pipeline exceeds the set pressure of the safety valve, the safety valve is opened, and lubricating oil flows back to the oil return interface 11 through the safety valve 4; the other path of the lubricating oil is connected to a granularity detector 8 through a self-sealing quick connector I9, the granularity of the lubricating oil is detected when the lubricating oil flows through the granularity detector 8, the detection result is displayed on a screen of the granularity detector 8, the detected lubricating oil flows into a back pressure valve 5 after flowing through a self-sealing quick connector II 7, and the lubricating oil flows out of the back pressure valve 5 and then flows back to an oil return interface 11; the pressure between the back pressure valve 5 and the safety valve 4 is provided by the gear pump 2, so that the detected lubricating oil in the internal pipeline of the granularity detector has certain pressure.

In this scheme, be equipped with reserve interface 6 on the oil circuit between granularity detector 8 and back pressure valve 5, when the pressure of this oil circuit needs to be measured, elements such as accessible reserve interface 6 high-speed joint barometer, after the measurement, self sealss is realized to the self sealss unit on the accessible reserve interface.

It should be noted that: the device for pressurizing the oil liquid can be integrated with the detector into a whole; it can also be assembled separately on site, for example: as shown in fig. 1: the motor 3, the gear pump 2, the coupler, the safety valve 4, the back pressure valve 5, the connecting valve block, the joint pipeline and the like are connected to form an integrated assembly for standby, and when detection is needed, the integrated assembly is connected with the granularity detector 8 according to a diagram, and then the oil return port and the oil outlet are connected with an oil return interface and an oil inlet interface which are preset in a pipeline in a matching mode. In the embodiment, the setting range of the back pressure valve is 30-60bar, the setting range of the safety valve is 70-100bar, a single-phase motor is adopted, the power is 100-400w, and the gear pump is used for controlling the flow to be 100-400ml/min; based on the above parameters, the particle size of the bubbles flowing through the particle size detector can be controlled not to exceed 1 μm in the implementation process.

The present invention is not described in detail in the prior art.

It should be noted that while the invention has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the appended claims and their equivalents.

Claims

1. An anti-bubble type lubricating oil on-line monitoring method is characterized in that: the method comprises the following steps:

s1, connecting oil in a tested oil path into a pressurizing system, and pressurizing the tested oil through the pressurizing system;

2. The on-line monitoring method of the anti-bubble type lubricating oil according to claim 1, characterized in that: in the step S1, when the oil is pressurized, the following requirements are satisfied: the diameter of the air bubbles in the oil solution to be measured is reduced to 1 μm or less.

3. The on-line monitoring method of the anti-bubble type lubricating oil according to claim 1, characterized in that: in the step S2, a back pressure unit is provided on a discharge oil path of the granularity detector, and the oil to be detected is kept unchanged to the current pressure in the detection process by the back pressure unit.

4. The device for the on-line monitoring method of the anti-bubble lubricating oil according to any one of claims 1 to 3, which comprises a granularity detector, and is characterized in that: the oil inlet interface is connected to an oil inlet of the gear pump through an oil pipe and divided into two paths after passing through the gear pump, wherein one path is connected to the safety valve, when the pressure of the oil path is abnormal or the pressure of the pipeline exceeds the set pressure of the safety valve, the safety valve is opened, and the lubricating oil flows back to the oil return interface through the safety valve; and the other path is connected with a granularity detector, and the detected lubricating oil flows back to the detected oil path after passing through a back pressure valve and an oil return interface.

5. The apparatus of claim 4, wherein: and oil pressure in an oil path between the back pressure valve and the safety valve is provided by a gear pump.

6. The apparatus of claim 5, wherein: the setting range of the back pressure valve is 30-60bar, and the setting range of the safety valve is 70-100bar.

7. The apparatus of claim 4, wherein: and self-sealing quick connectors are respectively arranged on oil paths between the granularity detector and the gear pump and between the granularity detector and the back pressure valve.