KR20060028915A - Device for counting number of balls for cleaning conduits - Google Patents

Abstract

The present invention is connected to the system having a pipe flowing the working fluid flows through the pipe every cycle of the cleaning process in the cleaning device in the cleaning device configured to supply a plurality of cleaning balls into the pipe and to recover the cleaning ball via the pipe The present invention relates to a ball counting device for cleaning pipes, which accurately monitors the number of balls collected by the monitoring unit and monitors whether the cleaning ball is caught in the pipe. A plurality of alignment plates having a plurality of holes through which the cleaning ball can pass are installed in the housing, spaced apart from each other, and the holes formed in two adjacent alignment plates are staggered from each other. The washing balls passing through the alignment plate are introduced and moved one by one into the counter tube, and the counter tubes are provided with first and second sensing plates disposed with the same positional difference as the diameter of the balls in the traveling direction of the washing ball. . The first and second sensing plates are elastically deformed in contact with the cleaning ball, and the first and second sensors generate a detection signal for the deformation. The control unit measures the number of balls for washing in response to the detection signals detected from the first and second sensors, and if the detection signals of the first and second sensors overlap, it determines that the number of balls for washing passed through the counter tube is two. do.

Piping, cleaning balls, counters, detection plates, sensors

Description

Ball counting device for pipe cleaning {DEVICE FOR COUNTING NUMBER OF BALLS FOR CLEANING CONDUITS}

1 is a schematic view showing a conventional wastewater heat exchanger washing apparatus;

2 is a schematic view showing a wastewater heat exchanger washing apparatus to which a ball counting device for washing pipe according to the present invention is applied;

Figure 3 is a partial cutaway perspective view showing the internal structure of the ball counting device for pipe washing according to the present invention,

Figure 4 is a cross-sectional view of the ball counting device for washing pipe according to the present invention,

5a and 5b is a view showing the first and second alignment plate of the ball counting device for washing pipe according to the present invention, respectively;

6 is a view showing a flow rate control plate of the ball counting device for washing pipe according to the present invention,

7 is a cross-sectional view showing an example of operation of the ball counting device for washing pipe according to the present invention;

8 is a view showing an output signal of a sensor according to the operation shown in FIG.

9 is a cross-sectional view showing another operation example of the ball counting device for washing pipe according to the present invention;

10 is a view showing an output signal of the sensor according to the operation shown in FIG.

<Description of the symbols for the main parts of the drawings>

110: housing

122: first alignment plate

124: second alignment plate

132: counter

134: first flow rate control plate

136: second flow control plate

140: the first detection plate

150: second sensing plate

160: first proximity sensor

170: second proximity sensor

B: cleaning ball

The present invention relates to a ball counting device for pipe washing, and more particularly, to accurately monitor the number of balls that are collected by the ball collector through the pipe at every cycle of the washing process, and monitors whether the washing ball is caught in the pipe. The present invention relates to a ball counting device for cleaning pipes.

In general, pipes through which a working fluid, such as water, flows, may cause rust or foreign matter in the pipes over time, and if left as it is, the pipes are narrowed, which causes a problem of shortening the efficiency or life of the device. In order to solve such a problem, the technique which removes the scale which generate | occur | produced in the inside of a pipe by injecting a lot of washing balls made of sponge, silicon | silicone, etc. in a pipe in recent years is circulated in a pipe.

Hereinafter, it will be described by taking an example of applying the washing device using the washing ball to the heat exchanger for waste water.

Figure 1 is a schematic view showing a conventional wastewater heat exchanger washing apparatus.

As shown, the conventional heat exchanger cleaning apparatus for wastewater has an air compressor 20 for generating high pressure compressed air, and a high pressure compression receiving wastewater w and discharged from the air compressor 20. Injector 30, which receives air and discharges the wastewater w to the heat exchanger system for the wastewater, receives a plurality of cleaning balls B and is washed together with the high pressure wastewater discharged from the injector 30. A ball collector 40 for discharging the ball B for the wastewater to the heat exchanger system side, and a ball collector 40 discharged from the ball collector 40 and passed through the heat exchanger 10. It is largely composed of a bolt trap (50, ball trap) for returning to the side.

The first solenoid valve 72 is installed in the pipe 22 connecting the air compressor 20 and the injector 30, and the pipe 42 connecting the ball collector 40 and the inlet pipe 12 of the heat exchanger system 42. ), A first check valve 82 is installed, and a second check valve 84 is installed at a pipe 44 connecting the bolt wrap 50 and the ball collector 40. In addition, the injector 30 is provided with a drain pipe 24 for discharging the high pressure compressed air in the injector 30 to the outside, and the second solenoid valve 74 is installed in the middle of the drain pipe 24.

Reference numeral 14 denotes a water pump for supplying wastewater to the heat exchanger 10 in a wastewater heat exchanger system, and 60 denotes the first and second solenoid valves so that the wastewater heat exchanger cleaning device can be operated smoothly. 72 and 74, the control unit for controlling the opening and closing timing.

Hereinafter, the operation of the conventional wastewater heat exchanger washing apparatus configured as described above will be described.

In the initial state in which both the first and second solenoid valves 72 and 74 are closed, the plurality of cleaning balls B are collected in the ball collector 40 and the waste water w is filled in the injector 30, When the air compressor 20 is operated by the 60 and the first solenoid valve 72 is opened, high pressure air flows from the compressor 20 into the injector 30 to pressurize the waste water w. This pressing force is transferred into the ball collector 40 so that a plurality of washing balls B in the ball collector 40 are introduced into the inlet of the heat exchanger 10 through the first check valve 82 and the pipe 42. . When a predetermined time period in which the washing ball B can be introduced into the heat exchanger 10 from the ball collector 40 has elapsed, the controller 60 switches the first solenoid valve 72 to the closed state. do.

The plurality of washing balls B introduced into the heat exchanger 10 collide with the inner wall of the pipe of the heat exchanger 10 to remove the scale fixed to the wall, and then pass through the bolt wrap 50 to form a heat exchanger ( Wastewater passing through 10) flows to the cooling tower (not shown), and the washing ball B passes through the pipe 44 and stands by at the inlet of the second check valve 84 in a stopped state. When a predetermined time period in which all the cleaning balls B pass through the heat exchanger 10 has elapsed, the controller 60 opens the second solenoid valve 74 so that the high pressure air in the injector 30 is drain pipe. Discharge to outside through (24). At the same time, the cleaning ball B is returned to the ball collector 40 via the second check valve 84, and the waste water passes through the ball collector 40 to refill the inside of the injector 30. When a predetermined time period for the washing ball B to be recovered to the ball collector 40 has elapsed, the control unit 60 closes the second solenoid valve 74, thereby initializing the wastewater heat exchanger washing apparatus. Return to.

However, in the cleaning apparatus using the conventional cleaning ball as described above, to check whether the cleaning ball is caught in the pipe, the cleaning ball collected in the ball collector should be periodically counted, at which time the user Since the number of balls for washing should be checked visually through the transparent window provided in the ball collector, it is not only cumbersome, but in the system with a large amount of balls of washing balls, errors occur when counting with the naked eye, resulting in low accuracy. There was a problem that the ball is left for a long time in a jammed state.

Furthermore, when applied to a heat exchanger for waste water, if the turbidity of the waste water is high, there is a problem that can not be identified by the naked eye through the transparent window of the ball collector.

The present invention is to solve the problems of the prior art, the object of the present invention is to accurately measure the number of balls to be returned to the ball collector by passing through the pipe every cycle of the cleaning process, whether the washing ball is caught in the pipe It is to provide a ball counting device for pipe washing to enable the timely warning of the user.

The present invention for achieving the above object is a device for measuring the number of the washing ball to be recovered via the pipe in the washing apparatus for supplying a plurality of washing balls into the pipe flowing the working fluid, is installed in the middle of the pipe A housing through which the plurality of cleaning balls pass therein; Alignment means for aligning and advancing a plurality of cleaning balls introduced into the housing; Sensing means for sensing a plurality of washing balls that are aligned and advanced by the alignment means; And a control unit for measuring the number of washing balls in response to the detection signal detected by the detection unit.

Alignment means is installed in the housing spaced apart from each other, consisting of a plurality of alignment plates having a plurality of holes through which the cleaning ball can pass, the holes formed in two adjacent alignment plates are arranged to cross each other do.

The sensing means includes a counter tube formed so that a plurality of washing balls passing through the alignment means pass through the inside one by one, the first and second cutouts having a predetermined position difference in the advancing direction of the washing ball in the counter tube; First and second sensing plates, one end of which is fixed to an outer surface of the counter tube and the other end of which is positioned in the first and second incisions and is elastically deformed in contact with the washing ball passing through the inside of the counter tube; And first and second sensors for generating a detection signal for deformation of the second sensing plate. The first sensing plate and the second sensing plate are disposed with a position difference of the same size as the diameter of the washing ball in the direction of movement of the washing ball.

The control unit determines that the number of washing balls passing through the counter tube is two when the detection signals of the first and second sensors overlap.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Figure 2 is a schematic view showing that the pipe washing ball counting device according to the present invention is applied to the waste water heat exchanger washing device, Figure 3 and Figure 4 is an internal structure of the pipe washing ball counting device according to the present invention, respectively Partial incision perspective view and cross-sectional view. However, since the heat exchanger washing apparatus for wastewater to which the ball counting device for pipe washing according to the present invention is applied is the same in construction as the conventional washing apparatus described above with reference to FIG. 1, the same components are given the same numbers, Detailed description thereof will be omitted.

As shown in Figure 2, the ball counting device for cleaning 100 according to the present invention is connected between the outlet side of the bolt wrap 50 and the inlet side of the second check valve 84 in the heat exchanger cleaning device for waste water It is installed in the middle of the pipe 44.

As shown in FIGS. 3 and 4, the cleaning ball counter 100 may include a housing 110 connected to the pipe 44 in the middle of the pipe 44 and a housing 110 from the bolt wrap 50. ) A sensing means 130 for aligning a plurality of washing balls (B) introduced into the line in a row and washing balls (B) proceeding in a line by the alignment means 120. And a speed adjusting means for adjusting the flow rate of the working fluid flowing in the housing 110, that is, the waste water w, to adjust the flow rates of the plurality of washing balls B passing through the sensing means 130. Is done.

The housing 110 is coupled to both ends of the hollow cylindrical body 112 having the alignment means 120 and the sensing means 130 and the body 112 to shield the body 112 from the outside while the pipe 44 ) And first and second covers 114 and 116 in communication with each other.

The washing balls B introduced into the housing 110 from the bolt wrap 50 via the pipe 44 are often crowded together in groups in many cases, and the alignment means 120 is thus crowded. It is to give a time difference to each other so as to enter the cleaning means (B) one by one to move the sensing means 130. To this end, as shown in FIGS. 5A and 5B, the alignment means 120 includes a plurality of holes 122a and 124a each having a size approximately 1.5 times larger than the diameter of the cleaning ball B. And first and second alignment plates 122, 124. When two or more of the alignment plates 122 and 124 are provided and the holes 122a and 124a are arranged to be staggered with each other, the cleaning balls B may have different holes 122a and 124a of the alignment plates 122 and 124. By passing randomly through the speed difference between each other is generated, thereby moving toward the sensing means 130 one by one. In the present embodiment, four holes 122a and 124a are formed in the alignment plates 122a and 124a so as to be equiangular, that is, arranged at intervals of 90 °, and the holes 122a and the first alignment plate 122 are arranged. The holes 124a of the two alignment plates 124 were arranged to be staggered with each other by an angle of 45 °.

The sensing means 130 is a hollow cylindrical counter tube 132 having an inner diameter substantially the same as the diameter of the washing ball B so that the washing balls B pass therein one by one, and installed in the counter tube 132. (132) the first and second sensing plates (140, 150) elastically deformed in contact with the cleaning ball (B) passing through the inside, and the sensing plate in contact with the cleaning ball (B) ( First and second non-contact proximity sensors (160, 170) for detecting the deformation of the 140, 150 to generate a signal, respectively.

Each of the sensing plates 140 and 150 is fixed on the outer circumferential surface of the counter tube 132 by the support units 148 and 158 and the other end thereof extends toward the cutouts 132 a and 132 b formed in the counter tube 132. 142 and 152, and one end is fixed to the support portion 148, 158 and the other end is attached to the leaf spring (142, 152) for applying a force for biasing the leaf spring (142, 152) to the counter tube 132 side Toggle springs 144, 154. The toggle springs 144 and 154 are intended to increase the speed of returning to the original position after deformation of the leaf springs 142 and 152. Since the characteristics of the toggle springs are well known, a description thereof will be omitted. Protrusions for increasing the amount of deformation of the leaf spring (142, 152) by the contact of the cleaning ball (B) on one surface of the leaf spring (142, 152 toward the inside of the counter tube 132 through the incisions (132a, 132b) 146 and 156 are formed.

If the cleaning ball (B) is separated one by one and the ideal conditions to pass through the counter tube 132 at a sufficient distance from each other, the detection plate and one proximity sensor may be provided each one. However, in practice, the two cleaning balls (B) are often stuck together and pass through, and when the passing speed of the cleaning ball (B) is faster than the reaction speed of the proximity sensor, the proximity sensor is the cleaning ball (B). It detects that only one of these passes and an error occurs. In order to solve this problem, the present invention includes two sensing plates 140 and 150 and two proximity sensors 160 and 170 corresponding to the two sensing plates 140 and 150, respectively. It is set to have a position difference of the same size as the diameter of the ball (B) in the advancing direction of B), its working effect will be described later.

The speed control means is composed of flow control plates 134, 136 coupled to both ends of the inlet and outlet sides of the counter tube 132, these flow control plates (134, 136), as shown in Figure 6, A plurality of bypass holes for setting the flow rate of the holes (134a, 136a) through which the ball (B) passes, and the waste water (w) that is bypassed to the outlet of the housing (110) without passing through the counter tube (132) ( 134b and 136b are formed. The plurality of bypass holes 134b and 136b control the flow rate of the waste water w that is bypassed to the outlet of the housing 110 without passing through the counter tube 132. It has the function to adjust the speed of passage. This is to prevent the signal generation time of the proximity sensor (160, 170) is too short to determine if the speed of the cleaning ball (B) passing through the counter tube 132 is too fast.

Hereinafter, the effect of the ball counting device for pipe washing according to the present invention configured as described above will be described with an example applied to the waste water heat exchanger cleaning device.

As shown in FIG. 2, both the first and second solenoid valves 72, 74 are closed, a plurality of cleaning balls B are collected in the ball collector 40, and the waste water w in the injector 30. In the initial state filled with), when the air compressor 20 is operated by the control unit 60 and the first solenoid valve 72 is opened, high pressure air flows into the injector 30 from the compressor 20 to discharge wastewater ( press w). This pressing force is transferred into the ball collector 40 so that a plurality of washing balls B in the ball collector 40 are introduced into the inlet of the heat exchanger 10 through the first check valve 82 and the pipe 42. . When a predetermined time period in which the washing ball B can be introduced into the heat exchanger 10 from the ball collector 40 has elapsed, the controller 60 switches the first solenoid valve 72 to the closed state. do.

The plurality of washing balls B introduced into the heat exchanger 10 collide with the inner wall of the pipe of the heat exchanger 10 to remove the scale fixed to the wall, and then pass through the bolt wrap 50 to form a heat exchanger ( Waste water passing through 10) flows to the cooling tower (not shown), and the cleaning ball B is introduced into the housing 110 of the ball counter 100 for cleaning through the pipe 44.

As shown in FIG. 7, the plurality of cleaning balls B introduced into the housing 110 of the cleaning ball counter 100 are formed of the first and second alignment plates 122 and 124. It passes through the holes 122a and 124a in turn. At this time, the holes 122a and 124a of the first alignment plate 122 and the second alignment plate 124 are arranged to be staggered by 45 ° from each other, so that the cleaning balls B are aligned with the alignment plates 122 and 124. By passing randomly through different holes 122a and 124a of each other, the speed difference between each other is generated and moved one by one toward the sensing means 130, so that the balls B for cleaning the counter tube 132 of the sensing means 130 ) Try to enter several at the same time to prevent being caught in the entrance.

The cleaning balls B enter the inside of the counter tube 132 one by one through the center hole 134a of the first flow rate control plate 134 located at the inlet side of the counter tube 132. As shown in FIGS. 7 and 8, the washing ball B moving along the counter tube 132 is separated without contact with each other and passes through the counter tube 132. Since the two sensing plates 150 are not deformed at the same time, when the signals of the first and second proximity sensors 160 and 170 are observed as a function of time, the overlapping sections do not exist, so the counting is easy.

On the other hand, as shown in Figure 9 and 10, when the two cleaning balls (B) attached to pass through the position difference of the same size and diameter of the ball (B) in the traveling direction of the cleaning ball (B) The sensing signals of the two proximity sensors 160 and 170 due to the deformation of the two sensing plates 140 and 150 are provided, and the section S overlaps in time. At this time, each of the proximity sensor (160, 170) is generated once signal, but through the logic process of the control unit 60 that receives this signal to determine the number of passes of the cleaning ball (B) to two, Since the logic processing of the control unit 60 is a well-known technique, a description thereof will be omitted.

On the other hand, the plurality of bypass holes 134b, 136b (see FIG. 6) formed in the first and second flow rate control plates 134 and 136 installed at the inlet and the outlet of the counter tube 132 do not pass through the counter tube 132. By controlling the flow rate of the waste water bypassed to the outlet of the housing 110 has a function of adjusting the speed at which the ball for cleaning (B) passes through the counter tube (132). This is to prevent the signal generation time of the proximity sensor (160, 170) is too short to determine if the speed of the cleaning ball (B) passing through the counter tube 132 is too fast.

As described above, the plurality of cleaning balls (B) discharged after the number is counted in the counting device 100 to stand by the inlet of the second check valve 84 in the stop state via the pipe 44 do. When a predetermined time for all the cleaning balls B to pass through the counter 100 passes, the controller 60 opens the second solenoid valve 74 so that the high pressure air in the injector 30 is drained. Discharge to outside through (24). At the same time, the cleaning ball B returns to the ball collector 40 via the second check valve 84 and the waste water w passes through the ball collector 40 to refill the inside of the injector 30. do. When a predetermined time period for the washing ball B to be recovered to the ball collector 40 has elapsed, the control unit 60 closes the second solenoid valve 74, thereby initializing the wastewater heat exchanger washing apparatus. Return to.

The present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims.

As described above in detail, the ball counting device for pipe washing according to the present invention is automatically discharged from the ball collector and after passing through the piping of the system to be cleaned, automatically detecting the number of balls for washing to be recovered back to the ball collector, The operator can easily determine whether or not the ball is caught in the pipe is effective to ensure the operation safety of the system.

In addition, the ball counting device for pipe washing according to the present invention by using a plurality of alignment plates to guide the washing balls to pass through the counter tube sequentially with a time difference from each other, and the ball for washing through the counter using the flow rate control plate By adjusting the speed, using two proximity sensors, even if two washing balls are attached, there is an effect that can accurately detect the number.

Claims (7)

An apparatus for measuring the number of the washing ball recovered via the pipe in a washing apparatus for supplying a plurality of washing balls into the pipe flowing working fluid, A housing installed in the middle of the pipe and through which the plurality of cleaning balls pass; Alignment means for aligning and advancing the plurality of washing balls introduced into the housing; Sensing means for sensing the plurality of washing balls that are aligned by the alignment means; And a control unit for measuring the number of the plurality of washing balls in response to the detection signal detected by the sensing means. The method of claim 1, wherein the alignment means is installed in the housing spaced apart from each other, and consists of a plurality of alignment plates having a plurality of holes through which the cleaning ball can pass, The ball counting device for pipe washing, characterized in that the holes formed in the two adjacent alignment plates are arranged to cross each other. The method of claim 1, wherein the sensing means has a counter tube formed so that the plurality of washing balls passing through the alignment means one by one inside, and the counter tube has a predetermined position difference in the advancing direction of the washing ball First and second incisions are formed, one end is fixed to the outer surface of the counter tube and the other end is located in the first and the second incision in contact with the washing ball passing through the interior of the counter tube is elastic And a first and second sensors for deforming to the first and second sensing plates, and first and second sensors for generating a detection signal for deformation of the first and second sensing plates. According to claim 3, The first sensing plate and the second sensing plate is a pipe washing ball, characterized in that disposed in the traveling direction of the washing ball having a position difference of the same size as the diameter of the washing ball. Counter. The ball counting device for pipe washing according to claim 4, wherein the control unit is configured to determine the number of the washing balls passing through the counter tube as two when the detection signals of the first and second sensors overlap. According to claim 1, wherein the housing further includes a speed adjusting means for adjusting the flow rate of the working fluid flowing in the housing to adjust the flow rate of the plurality of washing balls passing through the sensing means; Ball counting device for pipe washing, characterized in that. According to claim 6, The speed adjusting means is a pipe washing ball coefficient, characterized in that consisting of one or more flow rate control plate formed with a hole through which the washing ball passes one by one and a plurality of bypass holes through which the working fluid passes. Device.

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