JPS5933588A - Counter of ball for tube cleaner - Google Patents

Abstract

PURPOSE:To count the number of ball with high accuracy, by taking the length of a ball in the passing direction passing through a tube as a function of a pulse number having a prescribed width and comparing the result with other large or small foreign material. CONSTITUTION:The ball 7 passing through the tube 9 shuts a ray irradiated from a light source 2 and a photoelectric tube 3 detects the ball or a foreign material. Further, the pulse number having a prescribed width generated from a pulse generator 35 from the start and the end of detection is counted at a pulse counter 36, the pulse is compared with the pulse number having a prescribed width at the passing of the ball having a preset upper and lower limit size, the disrimination and comparison between the ball and other large or small foreign material are attained at a foreign material discriminator 37. When discriminated as a ball, the pulse is counted at a ball counter 31. Thus, the number of ball is counted with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a highly accurate cutting device for 1tJ balls in a tube cleaning device.

Conventionally, the ball 70 counting device can only monitor points as shown in Fig. 1, so bubbles 5- and large and small foreign objects 8.6 in the fluid can be detected by light 2, ultrasonic waves, laser beams, etc. There was a drawback that the number of nF was increased due to the fact that the counting accuracy was poor.

The object of the present invention is to determine the number of pulses of a short constant width that occur while an object passes through the detection range of a detector of a counting device;
A ball dF number device that compares the number of pulses with a constant width generated while the ball passes and distinguishes between balls and other foreign objects! All on offer.

The key point of the present invention is that the length of the ball passing through the 1F path in the passing direction is taken as a function of the number of pulses with a constant width, and compared with other large and small foreign objects.

Hereinafter, the configuration of the present invention will be explained with reference to FIG.

21 is a condenser equipped with a large number of heat transfer #22 inside, 2
3 is an introduction pipe for introducing cooling water into the heat transfer/R22, and 24 is a cooling water discharge pipe. When cooling water is passed through this device and time elapses, sludge and scale are formed on the inner surface of the cooling tube, which causes a decline in the performance of the ascites device 21. One way to prevent this is to introduce all the cooling water into the sponge ball.
! There is a method of cleaning the heat exchanger tubes 22 continuously without stopping the operation of the condenser 21 by throwing the water into the heat exchanger tube 23 and passing it through the inside of the heat exchanger tubes 2.2. As shown in the figure, the device 4 includes a ball vfi ring surface 26 that circulates water containing balls from the cooling water discharge 'α24 side to the cooling water introduction '1f23Ill11, and 2. cooling water introduction g2.
Inject the ball into 3 and spread the ball into the 11th woman ゛A29
And, the inside of the heat exchanger tube 22 is drained, cooled water is drained [124
A ball catcher 25 that extracts all of the gold-passing balls and introduces them into the pole circulation pipe 26; and a ball 'f' provided in the middle of the ball circulation pipe W26; A pump 27, a ball collector 28 provided in the middle of the ball circulation piping 26 for inserting balls passing through this piping 26 into the circuit and taking them out of the circuit, a valve 30 provided in the ball +r64 distribution U26, and A ball counting device 1t that counts passing balls provided within the ball circulation pipe 26 or by bypassing this pipe 26.
It consists of 31.

FIG. 3 shows an outline of a ball N1 numbering device according to an embodiment of the present invention. The ball 7 passing through the path a 9 is emitted by the light beam ti emitted from the light source 2, so that the light X'ff3 detects the ball or a foreign object. Then, the number of constant-width pulses generated by the pulse generator 35 from the start of detection to the end of detection r is calculated by the pulse counter + t36, and is calculated as the number of constant-width pulses when the ball passes the upper and lower limits set in advance. The foreign object cutting device 37-C compares the ball with other large and small foreign objects, and if it is determined to be a ball, the ball counting device t31 counts 31 balls. FIG. 4 shows a time chart of the pulse generator 35, and FIGS. 2g and 5e show a flowchart of the foreign object determination device 37.

In the figure, nMI is the limit set value, nMAX is the 11 old setting, ■ is the origin, and 4 is the counter.

According to the present invention, it is possible to accurately determine the number of balls #fa.

[Brief explanation of the drawing]

Figure 1 shows the configuration of a conventional ball counting device, Figure 2 is a system diagram of a condenser cleaning device, and Figure 31 V shows the configuration of a ball counting device according to an embodiment of the present invention. Figure V is a time chart of the pulse generator, and Figure i51gn is a flow chart of the foreign matter determination device. 5...Bubble, 6...Small object, 7...Ball, 8...
...Long object, 31...Ball counting device, 35...Pulse generator 1m! . Grass 1 Figure 2 Mouth 3 Mouth grass t7 Input-J- $

Claims (1)

[Claims] ■, Duplex cleaning equipment for heat exchanger system internal metal o1t, i
In an apparatus for calculating the numerical aperture of a ball using light, ultrasonic waves, laser beams, etc., there is a means for determining the length of the ball as a function of the number of pulses of a constant width, and A ball cleaning device for a tube cleaning device, which comprises a means for determining the size of a foreign object.