CN113028262A - Lubrication control method and device based on bearing temperature rise gradient change - Google Patents
Lubrication control method and device based on bearing temperature rise gradient change Download PDFInfo
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- CN113028262A CN113028262A CN202011584512.9A CN202011584512A CN113028262A CN 113028262 A CN113028262 A CN 113028262A CN 202011584512 A CN202011584512 A CN 202011584512A CN 113028262 A CN113028262 A CN 113028262A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/02—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/14—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2250/00—Measuring
- F16N2250/08—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2270/00—Controlling
- F16N2270/20—Amount of lubricant
- F16N2270/22—Amount of lubricant with restrictions
- F16N2270/26—Amount of lubricant with restrictions variable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2270/00—Controlling
- F16N2270/70—Supply
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a lubrication control method and a lubrication control device based on bearing temperature rise gradient change, which belong to the technical field of mechanical manufacturing and comprise the following steps: a database of the temperature difference value of the bearing at the time interval and the quantity of the lubricating grease required to be supplemented correspondingly is established in advance; when the equipment starts to operate, collecting the temperature of the bearing and marking the temperature as the initial temperature of the bearing; collecting the current bearing temperature after a time interval; and calculating the temperature difference value between the current bearing temperature and the initial bearing temperature, judging whether the temperature difference value is greater than a safety value, if not, continuing monitoring, otherwise, inquiring a database, and supplementing lubricating grease with the amount corresponding to the bearing temperature difference value into the bearing cavity. The invention establishes a novel relation suitable for bearing lubrication and lubricating grease supplement, is more suitable for the working mode of bearing lubrication and bearing temperature, and realizes the purpose of good lubrication.
Description
Technical Field
The invention relates to the technical field of machine manufacturing, in particular to a lubrication control method and device based on bearing temperature rise gradient change.
Background
The bearing is an important part in mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the movement process of the mechanical rotating body and ensuring the rotation precision of the mechanical rotating body. In order to ensure that the bearing reduces the abrasion as much as possible and realizes the normal work with longer service life, the lubrication plays an important role. At present, the bearing lubrication mainly comprises two modes of oil lubrication and grease lubrication. Oil lubrication needs to be carried out by arranging an oil slinger for pumping or soaking a bearing in an oil pool for forced lubrication through an oil wedge, and is relatively complex. And grease lubrication can be adopted for the rolling bearing with the rotating speed not exceeding three thousand revolutions per minute and the temperature not exceeding one hundred and fifteen degrees centigrade. Grease lubrication has the advantage of simple structure, and mainly makes the bearing work by soaking the grease in the cavity of the bearing so as to achieve the lubricating effect.
Grease lubrication of bearings needs to be supplemented with grease regularly, and at present, two supplement modes are mainly adopted: one is to manually and periodically supplement lubricating grease, and the supplement period is uniformly injected in the grease injection period according to the annual grease injection amount of the bearing. One is to change the lubrication parameters by automatically detecting whether the bearing temperature reaches an extreme value, and a lubrication control strategy is generally adopted: when the temperature of the bearing reaches an extreme value in the running process of the equipment, alarming or stopping running of the equipment is carried out, then a brand new lubricant is replaced, new lubricating parameters are set, and the equipment runs again. The disadvantage of this lubrication method is that during the operation of the equipment, when the temperature of the bearing reaches an extreme value, the bearing is actually damaged or potentially invisibly damaged, and then the planned shutdown of the equipment may be caused, which may affect the stable operation of the equipment.
In summary, in the grease replenishment system of the prior art, the control strategy is derived from the equipment operation parameters or time interval control, and the actual lubrication state of the bearing is not considered.
Disclosure of Invention
The invention aims to solve the technical problem that the lubricating grease supplement control strategy in the prior art is all controlled by equipment operation parameters or time intervals, and the defect that the actual lubricating state of a bearing is not considered, and provides a lubricating control method and a lubricating control device based on bearing temperature rise gradient change.
A lubrication control method based on bearing temperature rise gradient change comprises the following steps:
s1: pre-establishing a database of time interval tis bearing temperature difference Tbb and the amount of grease required to be supplemented correspondingly;
s2: when the equipment starts to operate, collecting the temperature of the bearing and marking the temperature as the initial bearing temperature Tb 0;
s3: collecting the current bearing temperature and marking the current bearing temperature as Tbn after a time interval tis;
s4: calculating a temperature difference value Tbb between the current bearing temperature Tbn and the initial bearing temperature Tb0, namely Tbb ═ Tb0-Tbn |, judging whether the temperature difference value Tbb is greater than a safety value T, if not, jumping to step S3, otherwise, jumping to step S5;
s5: and querying the database, filling lubricating grease with a quantity corresponding to the bearing temperature difference Tbb into the bearing cavity, and jumping to S3.
Further, the safety value T of step S4 is preset manually according to different work tasks of the bearing and by combining practical experience.
Further, the unit time interval tis is set manually according to different work tasks of the bearing and by combining practical experience.
Further, the bearing is a bearing of a generator, the time interval tis is 5 minutes, the T is 80 ℃, and 1L of lubricating grease is constantly filled in the step S5.
A lubrication control device based on bearing temperature rise gradient change comprises a temperature sensor, a lubricating grease storage tank, a grease pump and a microcomputer;
the temperature sensor is electrically connected with the microcomputer and used for collecting the temperature of the bearing and transmitting collected data to the microcomputer;
the lubricating grease storage tank is used for storing lubricating grease;
a grease pumping inlet is connected with a grease storage tank, and a grease outlet is connected with a grease injection port of the bearing chamber; the grease pumping pump is also electrically connected with the microcomputer and starts to pump the lubricating grease in the lubricating grease storage tank to be injected into a grease injection port of the bearing cavity according to a microcomputer instruction;
the microcomputer includes the following programs:
s1: initializing a database of time interval tis bearing temperature difference Tbb and the amount of grease required to be supplemented correspondingly;
s2: when the equipment starts to operate, the temperature sensor collects the temperature of the bearing and marks the temperature as the initial bearing temperature Tb 0;
s3: after a time interval tis, collecting the current bearing temperature through the temperature sensor and marking the current bearing temperature as Tbn;
s4: calculating a temperature difference value Tbb between the current bearing temperature Tbn and the initial bearing temperature Tb0, namely Tbb ═ Tb0-Tbn |, judging whether the temperature difference value Tbb is greater than a safety value T, if not, jumping to step S3, otherwise, jumping to step S5;
s5: and querying the database, filling lubricating grease with a quantity corresponding to the bearing temperature difference Tbb into the bearing cavity, and jumping to S3.
Furthermore, the safety value T is preset manually according to different work tasks of the bearing and by combining practical experience through the microcomputer I/O equipment.
Furthermore, the unit time interval tis is set manually through the microcomputer I/O equipment according to different work tasks of the bearing and combined with practical experience.
Further, the bearing is a bearing of a generator, the time interval tis is 5 minutes, the T is 80 ℃, and 1L of lubricating grease is constantly filled in the step S5.
The invention has the advantages that a novel relation suitable for bearing lubrication and lubricating grease supplement is established, the lubricating grease supplement is determined according to the bearing temperature variation, the lubricating grease supplement operation is improved, the working mode suitable for the bearing lubrication and the bearing temperature is better realized, the purpose of good lubrication is realized, and the equipment maintenance cost is favorably reduced.
Drawings
Fig. 1 is a flowchart of a lubrication control method based on gradient change of bearing temperature rise according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a lubrication control device based on bearing temperature rise gradient change according to an embodiment of the invention.
Detailed Description
In order to further disclose the technical scheme of the invention, the following describes exemplary embodiments of the invention in further detail with reference to the attached drawings, and obviously, the described embodiments are only a part of the embodiments of the application, and are not exhaustive of all the embodiments. And the embodiments and features of the embodiments in the present description may be combined with each other without conflict.
The root cause of bearing damage easily caused by the fact that the extreme temperature is used as the evaluation effect in the existing bearing lubrication effect is as follows: the lubricating lubricant is supplemented regularly, the lubricating effect is monitored only by paying attention to the maximum temperature value and not by paying attention to the change of the temperature difference value in unit time, so that the condition that the equipment cannot normally operate when an alarm occurs is caused, the equipment can only be stopped to enter maintenance or overhaul, the ordered production is not facilitated, and the safe production and the production task are greatly influenced on time. Through long-term working practices, the inventor finds that the lubricant supplement amount is controlled according to the variation of the bearing temperature, the lubricant supplement amount is dynamically adjusted, the lubricant supplement amount is responded according to the variation of the bearing temperature, the lubricating grease supplement is realized by the lubricating effect, the too fast increase of the bearing temperature is reduced, and the problem can be found at the early stage of poor bearing lubrication and improved so as to restore the bearing to the normal operation state.
The invention provides a lubrication control method based on bearing temperature rise gradient change, which comprises the following steps as shown in figure 1:
s1: pre-establishing a database of time interval tis bearing temperature difference Tbb and the amount of grease required to be supplemented correspondingly;
s2: when the equipment starts to operate, collecting the temperature of the bearing and marking the temperature as the initial bearing temperature Tb 0;
s3: collecting the current bearing temperature and marking the current bearing temperature as Tbn after a time interval tis;
s4: calculating a temperature difference value Tbb between the current bearing temperature Tbn and the initial bearing temperature Tb0, namely Tbb ═ Tb0-Tbn |, judging whether the temperature difference value Tbb is greater than a safety value T, if not, jumping to step S3, otherwise, jumping to step S5;
s5: and querying the database, filling lubricating grease with a quantity corresponding to the bearing temperature difference Tbb into the bearing cavity, and jumping to S3.
The safety value T in step S4 is preset manually according to different work tasks of the bearing and by combining practical experience. The unit time interval tis is set manually according to different work tasks of the bearing and by combining practical experience.
Typically, the bearing is a generator bearing, the time interval tis is 5 minutes, the T is 80 ℃, and the step S5 is to constantly supplement 1L of grease.
As shown in fig. 2, a lubrication control device based on gradient change of bearing temperature rise comprises a temperature sensor, a grease storage tank, a grease pump and a microcomputer;
the temperature sensor is electrically connected with the microcomputer and used for collecting the temperature of the bearing and transmitting collected data to the microcomputer;
the lubricating grease storage tank is used for storing lubricating grease;
a grease pumping inlet is connected with a grease storage tank, and a grease outlet is connected with a grease injection port of the bearing chamber; the grease pumping pump is also electrically connected with the microcomputer and starts to pump the lubricating grease in the lubricating grease storage tank to be injected into a grease injection port of the bearing cavity according to a microcomputer instruction;
the microcomputer includes the following programs:
s1: initializing a database of time interval tis bearing temperature difference Tbb and the amount of grease required to be supplemented correspondingly;
s2: when the equipment starts to operate, the temperature sensor collects the temperature of the bearing and marks the temperature as the initial bearing temperature Tb 0;
s3: after a time interval tis, collecting the current bearing temperature through the temperature sensor and marking the current bearing temperature as Tbn;
s4: calculating a temperature difference value Tbb between the current bearing temperature Tbn and the initial bearing temperature Tb0, namely Tbb ═ Tb0-Tbn |, judging whether the temperature difference value Tbb is greater than a safety value T, if not, jumping to step S3, otherwise, jumping to step S5;
s5: and querying the database, filling lubricating grease with a quantity corresponding to the bearing temperature difference Tbb into the bearing cavity, and jumping to S3.
The safety value T is preset manually according to different work tasks of the bearing and by combining practical experience through the microcomputer I/O equipment.
The unit time interval tis is set manually according to different work tasks of the bearing and by combining practical experience through the microcomputer I/O equipment.
Generally, the bearing is a bearing of a generator, the time interval tis is 5 minutes, the T is 80 ℃, and the step S5 is to constantly fill 1L of lubricating grease.
The method of the invention is automatically completed by program control of the replenishment of the lubricant and the monitoring of the temperature change, and because the replenishment of the lubricating grease is determined by the bearing temperature change, a working mode which is more suitable for the bearing lubrication and the bearing temperature is established, a novel relation between the bearing lubrication and the replenishment of the lubricant is better adapted, direct data is provided for the predictive maintenance and the maintenance of the equipment, and the maintenance cost of the equipment is reduced.
Claims (8)
1. A lubrication control method based on bearing temperature rise gradient change is characterized by comprising the following steps:
s1: pre-establishing a database of time interval tis bearing temperature difference Tbb and the amount of grease required to be supplemented correspondingly;
s2: when the equipment starts to operate, collecting the temperature of the bearing and marking the temperature as the initial bearing temperature Tb 0;
s3: collecting the current bearing temperature and marking the current bearing temperature as Tbn after a time interval tis;
s4: calculating a temperature difference value Tbb between the current bearing temperature Tbn and the initial bearing temperature Tb0, namely Tbb ═ Tb0-Tbn |, judging whether the temperature difference value Tbb is greater than a safety value T, if not, jumping to step S3, otherwise, jumping to step S5;
s5: and querying the database, filling lubricating grease with a quantity corresponding to the bearing temperature difference Tbb into the bearing cavity, and jumping to S3.
2. The lubrication control method based on bearing temperature rise gradient as claimed in claim 1, wherein the safety value T in step S4 is preset manually according to different work tasks of the bearing and by combining practical experience.
3. The lubrication control method based on bearing temperature rise gradient change as claimed in claim 1, wherein the unit time interval tis is manually set according to different work tasks of the bearing and by combining practical experience.
4. The lubrication control method based on bearing temperature rise gradient change as claimed in claim 1, wherein the bearing is a bearing of a generator, the time interval tis is 5 minutes, the T is 80 ℃, and the step S5 is implemented by constantly filling 1L of lubricating grease.
5. A lubrication control device based on bearing temperature rise gradient change is characterized by comprising a temperature sensor, a lubricating grease storage tank, a grease pumping pump and a microcomputer;
the temperature sensor is electrically connected with the microcomputer and used for collecting the temperature of the bearing and transmitting collected data to the microcomputer;
the lubricating grease storage tank is used for storing lubricating grease;
a grease pumping inlet is connected with a grease storage tank, and a grease outlet is connected with a grease injection port of the bearing chamber; the grease pumping pump is also electrically connected with the microcomputer and starts to pump the lubricating grease in the lubricating grease storage tank to be injected into a grease injection port of the bearing cavity according to a microcomputer instruction;
the microcomputer includes the following programs:
s1: initializing a database of time interval tis bearing temperature difference Tbb and the amount of grease required to be supplemented correspondingly;
s2: when the equipment starts to operate, the temperature sensor collects the temperature of the bearing and marks the temperature as the initial bearing temperature Tb 0;
s3: after a time interval tis, collecting the current bearing temperature through the temperature sensor and marking the current bearing temperature as Tbn;
s4: calculating a temperature difference value Tbb between the current bearing temperature Tbn and the initial bearing temperature Tb0, namely Tbb ═ Tb0-Tbn |, judging whether the temperature difference value Tbb is greater than a safety value T, if not, jumping to step S3, otherwise, jumping to step S5;
s5: and querying the database, filling lubricating grease with a quantity corresponding to the bearing temperature difference Tbb into the bearing cavity, and jumping to S3.
6. The lubrication control device based on bearing temperature rise gradient change as claimed in claim 5, wherein said safety value T is preset manually by said microcomputer I/O device according to different work tasks of the bearing and by combining practical experience.
7. The lubrication control device based on bearing temperature rise gradient change as claimed in claim 5, wherein the unit time interval tis is manually set by the microcomputer I/O device according to different work tasks of the bearing and combined with practical experience.
8. The lubrication control device based on bearing temperature rise gradient change as claimed in claim 5, wherein the bearing is a bearing of a generator, the time interval tis is 5 minutes, the T is 80 ℃, and the step S5 is implemented by constantly filling 1L of lubricating grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584512.9A CN113028262A (en) | 2020-12-28 | 2020-12-28 | Lubrication control method and device based on bearing temperature rise gradient change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584512.9A CN113028262A (en) | 2020-12-28 | 2020-12-28 | Lubrication control method and device based on bearing temperature rise gradient change |
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| CN113028262A true CN113028262A (en) | 2021-06-25 |
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| CN202011584512.9A Pending CN113028262A (en) | 2020-12-28 | 2020-12-28 | Lubrication control method and device based on bearing temperature rise gradient change |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127011A (en) * | 2022-05-31 | 2022-09-30 | 国电联合动力技术有限公司 | Bearing lubricating grease filling method and device |
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| CN204140156U (en) * | 2014-06-30 | 2015-02-04 | 长城汽车股份有限公司 | Lube oil cooler and vehicle |
| CN105531576A (en) * | 2013-09-12 | 2016-04-27 | 西门子公司 | Method and arrangement for monitoring an industrial device such as, for example, a machine or a system |
| GB2541183A (en) * | 2015-08-06 | 2017-02-15 | Skf Ab | Method and device for the lubrication of a machine arrangement |
| CN109899668A (en) * | 2019-04-01 | 2019-06-18 | 国电联合动力技术有限公司 | The lubrication compensation method of wind generator set main shaft bearing and system |
-
2020
- 2020-12-28 CN CN202011584512.9A patent/CN113028262A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531576A (en) * | 2013-09-12 | 2016-04-27 | 西门子公司 | Method and arrangement for monitoring an industrial device such as, for example, a machine or a system |
| CN103639848A (en) * | 2013-12-25 | 2014-03-19 | 沈阳机床(集团)有限责任公司 | Machining center lubricity test system and optimization method |
| CN204140156U (en) * | 2014-06-30 | 2015-02-04 | 长城汽车股份有限公司 | Lube oil cooler and vehicle |
| GB2541183A (en) * | 2015-08-06 | 2017-02-15 | Skf Ab | Method and device for the lubrication of a machine arrangement |
| CN109899668A (en) * | 2019-04-01 | 2019-06-18 | 国电联合动力技术有限公司 | The lubrication compensation method of wind generator set main shaft bearing and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127011A (en) * | 2022-05-31 | 2022-09-30 | 国电联合动力技术有限公司 | Bearing lubricating grease filling method and device |
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Application publication date: 20210625 |