JP2730184B2 - Diagnosis method for paper machine dryer lubrication - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a paper machine dryer lubrication diagnosis method.

[Prior Art] For example, a dryer (drying section) of a paper machine is a section that is placed next to a press section to perform dehydration of wet paper by heating and drying, and is operated at high speed.

The dryer of the paper machine is partially shown in FIG.
The drying drums 1 are arranged vertically in two stages and vertically shifted from each other in a staggered arrangement.
, And rotatably supported on the underframe 3, the driving shafts of the upper and lower drying drums 1 are connected to each other by a plurality of power transmission gear trains 4 shown in FIG. The endless upper canvas (felt) 6 is alternately wrapped around the upper drying drum 1 and the canvas roll 5 by using the canvas rolls 5 arranged in parallel between the drying drums 1 so that each upper drying drum 1 So that it covers the top,
Similarly, the endless lower canvas 8 is also used for the lower drying drum 1 by using the canvas roll 7 between the lower drying drums 1.
To cover the lower surface of each lower drying drum 1,
The wet paper 9 guided from the press unit is passed through a smoothing press 10 at the entrance of the drying unit to smooth the paper surface. Then, the surface of the wet paper 9 is applied to the surface of the lower drying drum 1, and then the upper drying drum In order to remove the moisture in the paper between the upper and lower canvases 6, 8 and the respective drying drums 1 by successively following the upper and lower two-stage drying drums 1 so that the opposite side of the wet paper 9 is applied, Further, steam is blown into each drying drum 1 and the latent heat of the steam is released to transfer heat to the paper through the wall of each drying drum 1 to dry the paper. 11 is a drum for drying canvas, 12 is a canvas guide roll,
13 is a gear case.

[Problems to be Solved by the Invention] However, the dryer of such a paper machine is a part that is exposed to a bad environment of high-speed operation in a high-temperature drying state, and each drying drum used in such a place is used. 1
Are easily damaged, and the drive system such as the gear train 4 connecting the drying drums 1 is easily worn. For this reason, conventionally, a means such as supplying lubricating oil to the driving system such as the gear train 4 to lubricate the bearing 2 is employed. However, in a bad environment as described above, the bearing 2 may be damaged. There have been problems such as vibrations, rattling due to wear of the drive system such as the gear train 4 and the like, generating noise, and adversely affecting the quality of paper.

Therefore, the present invention constantly monitors the oil amount and wear of the lubricating oil of the bearing or the like used in the high-speed operation as described above via the lubricating oil, and immediately diagnoses and displays the details of the abnormality when an abnormality occurs. It is to try to make it.

[Means for Solving the Problems] The present invention divides a lubricating section of a paper machine dryer into a plurality of groups, and comprises a pair of distribution pipes for supplying lubricating oil and a collecting pipe for collecting lubricating oil for each group. 1, the distribution pipe is provided with an oil supply sensor, and the recovery pipe is provided with an abrasion sensor adapted to capture the iron powder particles in the lubricating oil by an electromagnet and detect the accumulation amount of the iron powder particles, The detection signals from the lubrication sensor and the wear sensor are input to a computing device in which the wear determination data and the optimal oil amount of the lubricating oil are input in advance, and it is determined whether the wear and the oil amount of each group are normal or abnormal. The present invention relates to a paper machine dryer lubrication diagnosis method, wherein the determination result is displayed on a display device.

[Operation] The amount of lubricating oil supplied to each lubricating part of the paper dryers divided into a plurality of groups and the wear of each lubricating part are constantly detected, and from the detection signals, it is determined whether there is any abnormality in the oil amount and the wear amount. Each group is examined, and if there is an abnormality, the contents are determined (diagnosed) up to the content and displayed for each group. Therefore, measures such as stopping the line can be taken according to the display. When grouped detection is performed, the number of detection points is reduced, diagnosis and display are facilitated, and the display is more visible. Furthermore,
Equipped with an abrasion sensor that detects the amount of accumulated iron powder particles by capturing the iron powder particles in the lubricating oil with an electromagnet, and detects the wear of each lubricating part, so wear of the lubricating parts is easy. Can be detected with a simple configuration.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an example of an apparatus for performing the method of the present invention,
The lubricating parts (bearing 2 and gear train 4) on the operation side and the drive side of the paper machine dryer in which a number of drying drums 1 are arranged along the paper passing line are moved in the first paper dryer 14 direction in the paper passing line S direction.
a, a plurality of groups such as a second group dryer 14b and a third group dryer 14c.

The lubricating mains (bearings 2) (see FIG. 6) on the operating side of the drying drum 1 of each of the divided groups 14a, 14b, 14c are provided.
The lubrication unit (the bearing 2 and the gear train 4) supplies oil through the operation side distribution pipes 18 a, 19 a, and 20 a having the operation side oil supply pipe 16 a and the valve 17 a connected to the drive side 15. 7) a drive-side oil supply pipe 16b connected to the oil supply main pipe 15 and a valve 17b.
The oil is supplied through the drive side distribution pipes 18b, 19b, 20b having the above.

Drained oil from each lubricating part of each of the divided dryer groups 14a, 14b, 14c is collected separately by the operation-side recovery pipes 21a, 22a, 23a and the drive-side recovery pipes 21b, 22b, 23b. The collected oil is collected in a main collecting pipe 24 and sent to a forced lubricating oil tank 25, and the lubricating oil in the forced lubricating oil tank 25 is supplied through an oil pump 26 and an oil cooler 27. The main pipe 15 is circulated and supplied. In the forced lubricating oil tank 25, the viscosity of the lubricating oil is adjusted.

In the above configuration, each of the refueling main pipe 15 and the collecting main pipe 24 is provided with a total refueling sensor 28 and a total refueling sensor 29 for detecting a total refueling amount and a total refueling amount, respectively. Are detected by the scanner 30.

On the other hand, the operation side distribution pipes 18a, 19a, 20a and the drive side distribution pipes 18b, 19b, 20b respectively have refueling sensors 31a, 32a, 33a, 31b.
b, 32b, 33b are provided, and the refueling sensors 31a, 32a, 33a, 31b, 3
The respective detection signals of 2b and 33b are introduced into the scanner 30, and the operation-side recovery pipes 21a, 22a and 23a and the drive-side recovery pipes 21b, 22b and 23b are respectively provided with wear sensors 34a, 35a and 36a. , 3
4b, 35b, 36b are provided, and the wear sensors 34a, 35a, 36a, 34b,
The detection signals of 35b and 36b are input to the scanner 30.

As the wear sensors 34a, 35a, 36a, 34b, 35b, 36b,
As shown in FIG. 2, an electromagnet 38 is provided on a lower surface of a bypass pipe 37 provided in each recovery pipe (an example of the operation-side recovery pipe 21a).
Is installed, the accumulation of iron powder particles in the lubricating oil changes the magnetic flux of the electromagnet base, converts the change into an electric signal,
Use the one in which the amount of iron powder particles captured in 38 is measured.

In the wear sensors 34a, 35a, 36a, 34b, 35b, 36b,
By expressing the amount of iron powder particles in the lubricating oil adhering to the electromagnet 38 by time as shown in FIG. 3, the wear amount of the lubricating parts on the operating side and the driving side of each of the dryer groups 14a to 14c is reduced. calculated, it is possible to determine the extent of wear by measuring the time until the amount of wear reaches a certain amount of wear V _0. In the figure, time T ₀ or more is normal, and 1 / 3T ₀
The following are abnormal, and the middle is caution.

Further, the oil supply sensor 31a, 32a, 33a, 31b, 32 b, the signal from 33b can monitor the amount of lubricating oil, if the fourth predetermined proper amount of oil as shown in FIG. Q ₀ or more If it is normal or less, it is possible to make a judgment such as caution or abnormality depending on the degree.

Each sensor 28, 29, 31a, 31b input to the scanner 30
The detection signals from .about.36a and 36b are sequentially switched and input to the arithmetic unit 39.

The arithmetic unit 39 includes lubricating oil conditions (oil specifications: viscosity, oil amount, type) as shown in FIG. 5, the number of wear sensors and lubrication sensors, the number of all supply / drain sensors, and wear determination data.
T ₀ , 1 / 3T ₀ , the input device 40 for inputting the appropriate oil amount Q ₀ of the lubricating oil is connected, and further information such as normality, caution, abnormalities and the response in the case of abnormalities obtained by calculation,
A display device 41 for displaying each grouped unit by a display or a printout is connected.

 Next, the operation of the above embodiment will be described.

Lubricating oil conditions (oil specifications: viscosity, oil amount, type) and the number of sensors 28, 29, 31a, 31b to 36a, 36b (FIGS. 1 and 5 show the dryers in three groups 14a, 14b, 14c), the wear determination data T ₀ , 1 / 3T ₀ , and the appropriate amount of lubricating oil Q ₀ are input, and the sensors 28, 29, 3
Each detection signal from 1a, 31b to 36a, 36b is input to the arithmetic unit 39 via the scanner 30.

Then, the arithmetic unit 39 first sets the wear amount obtained from the detection signal of the wear sensor 34a to a constant wear amount V _{0 as} shown in FIG.
Is longer or smaller than the set wear determination data T ₀ and smaller than 1 / 3T ₀ (in the case of FIG. 5, it is determined only whether it is smaller than 1 / 3T ₀ ).
If the _{value is} smaller than 1 / 3T0, the display device displays "The operating side of the first-group dryer is abnormally worn" and "It is necessary to check the bearings on the operating side of the first-group dryer."
Display at 41. Similarly, the time required for the wear amount obtained from the detection signal of the wear sensor 34b to reach a constant wear amount V ₀ is
Set worn configuration data 1 / 3T ₀ less than or determined, smaller displays information driving side of the first group dryer similar to the above is that there is an abnormality on the display device 41.

Thereafter, the wear of the lubricating parts of each group is similarly determined.

Next, as shown in FIG. 5, whether the amount of lubricating oil supplied to the lubricating units of each group is appropriate, that is, as shown in FIG. 4, the operation side and the drive of each group 14a, 14b, 14c The oil amount on the side is appropriate oil amount Q ₀
(For example, 40 to 50 / MIN), and if it is normal, normality is displayed, and if there is an abnormality, information on the abnormality is displayed on the display device 41.

The determination based on the wear amount and the determination based on the refueling amount are analyzed in association with each other, and when an abnormality is determined, a warning is issued and measures such as operation stop are taken.

When an abnormality is displayed, the group is adjusted, inspected, repaired, etc. to restore the normal state.

The method of diagnosing dryer lubrication of a paper machine according to the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention.

[Effects of the Invention] As described above, according to the paper machine dryer lubrication diagnosis method of the present invention, the lubricating units of the paper machine dryer are divided into groups to constantly detect the amount of lubricating oil supplied to each group, and Equipped with an abrasion sensor that detects the amount of accumulated iron powder particles by capturing the iron powder particles in the lubricating oil with an electromagnet, constantly detects the wear of each lubrication part, diagnoses and displays abnormalities for each group The oil amount and wear can be detected with a simple configuration, and detection can be performed with a small number of detection points, signal processing is facilitated, and the display is easy to see. The effect can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall view showing an example of an apparatus for implementing the method of the present invention, FIG. 2 is a view showing an example of a wear sensor, FIG. 3 is a diagram showing the relationship between the amount of wear and operating time, FIG. FIG. 5 is a diagram showing the relationship between the amount of oil and operation time, FIG. 5 is a flowchart of the lubrication diagnosis method of the present invention, FIG. 6 is a side view of the dryer of the paper machine, and FIG. FIG. 3 is a schematic diagram showing a gear train of FIG. 1 is a drying drum, 2 is a bearing (lubricating oil), 4 is a gear train (lubricating portion), 14a, 14b, and 14c are dryer groups, 15 is an oil supply main pipe, 18
a, 19a, 20a are operating side distribution pipes, 18b, 19b, 20b are drive side distribution pipes, 21a, 22a, 23a are operation side recovery pipes, 21b, 22b, 23b are drive side recovery pipes, 24 is a recovery main pipe, 28 is a full refueling sensor, 29 is a full refueling sensor, 30 is a scanner, 31a, 31b, 32a, 32b, 33a, 33b is a refueling sensor, 34a, 34b, 35a, 35b, 36a, 36b is a wear sensor, 39
Denotes an arithmetic device, 40 denotes an input device, and 41 denotes a display device.

Claims (1)

(57) [Claims] The lubricating section of a paper machine dryer is divided into a plurality of groups, and a distribution pipe for supplying lubricating oil and a collecting pipe for collecting lubricating oil are provided for each group in a one-to-one correspondence. Equipped with a wear sensor that captures iron powder particles in the lubricating oil with an electromagnet and detects the accumulated amount of iron powder particles in the recovery pipe. The detection signal is input to an arithmetic unit in which the optimum oil amount and wear determination data of the lubricating oil are input in advance, and it is determined whether the oil amount and wear of each group are normal or abnormal, and the result of the determination is displayed. Paper machine dryer lubrication diagnosis method characterized by displaying on the machine