SU1500820A1 - Device for trapping balls - Google Patents

Abstract

This invention relates to a power system. The purpose of the invention is to increase the efficiency of trapping the balls by improving the flow hydrodynamics. A device for trapping balls contains a sieve and a chamber for withdrawing balls. To reduce the hydraulic resistance, the sieve is partitioned with a decrease in the width of the slotted channels along the water flow, and the plate is rotatably mounted in the output part in front of the chamber to discharge the balls. At the exit of the screen, a flat pad with teeth placed in the channels of the screen is installed along the perimeter. 1 hp f-ly, 11 ill.

Description

The invention relates to a power system and can be used in systems for cleaning tubes of heat exchangers from contamination.

The purpose of the invention is to increase the efficiency of trapping the balls by improving the flow hydrodynamics.

Figure 1 shows a dual-pitched device for trapping globular balls; FIG. 2 is view A of FIG. fig.Z - node 1 in figure 2; Figure 4 - section BB of Figure 3; figure 5 - shed device; in fig. 6 is a view In figure 5; figure 7 - node II in figure 6; Fig.8 is a section of GGD in Fig.7; Fig. 9 illustrates a gable device for large circulation water flow rates; 10 and 1I is a diagram and a graph of the water pressure drop.

The device for pressing the balls contains a case with two inclined screens 2 (Figures 1-4 and 9) or one screen (Figures 5-8). The sieve consists of separate sections with slotted channels formed using wire 3 with a diameter of 3 mm HJIH plates 2-2Q mm, set vertically to the surface of a hundred. In the output part of the sieve 2 there is a chamber 4 for collecting balls; parts of the sieve 2 is located /) and the center pad 8 with teeth 9. / 1 or: .-; The device for w.;, chilivanie balls equipped; g, o1 ".). gpppch 1p ny gshastina 10 with pivots hp) Nnoy on

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case. Sieve 2 contains sections, the width of the channels of which is reduced during the course of water-cooling.

The device works as follows.

Circulating water from the condenser drain chamber together with elastic balls enters the device body 1 and passes through the slotted channels of the sieve 2. The balls are separated on the sieve 2 and through the slot channels formed by the wire 3 as if by gravity flow. towards the camera 4.

Reducing the pressure drop of water on an inclined sieve is achieved by reducing the total hydraulic resistance of the sieve (differentiated by the width of the water movement of the sieve) and installing the plate 5, which limits the flow of water through the outlet part of the sieve. The latter is provided with the help of adjusting tool 6. The result of adjusting the flow rates of water to the outlet part is observed through the viewing window: -or f-balls accumulate in the outlet part, i.e. stick to the sieve 2, or freely pass into the chamber 4 to collect the balls.

Setting the optimal mode of collecting the balls is associated with a rather complex hydrodynamics of the movement of the pains and their water flow (from 5 to 20).

Elimination of dead-end zones at the joints of the sieve with the body is achieved by installing the lining 8 along the sieve's perimeter. At the expense of blocking the passage of water through the sieve, transverse movement of water occurs

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chambers 4. Teeth 9, bent into the slotted channels, bring the balls to the surface of the lining 8, from where a water note transfers the balls to the chamber 4.

Thus, all the balls separated from the sieve 2 are directed to the chamber 4 without sticking to the surface of the sieve, both in the exit part and the dead-end zones, ensuring the efficient operation of the device for trapping the balls.

Claims (1)

1. A device for trapping the balls of the steam turbine condenser tube cleaning system, which contains an inclined flat screen installed in the condenser drain conduit with longitudinal slit channels and a ball collecting chamber, in order to improve the flow dynamics by the wall of the conduit: 1 in front of the collection chamber, the balls are mounted with a plate that can be rotated around an axis parallel to the sieve plane, along the perimeter of the output part of the sieve there is a flat As a plate with teeth, the ends of which are placed in the slotted channels of the sieve, the sieve is sectioned, and the width of the slotted channels of each section decreases as water moves, 2, The apparatus according to claim 1, 1 and 2, so that it is provided with an additional plate placed in front of the chamber for collecting the balls and a guide placed on the wall of the conduit with. In this case, one side of the additional plate is pivotally connected to the main plate, and the opposite side is fixed in the guide. Fa., G Phases. H   with tuoflu cfMU (puaS AND 0tBy ujopuftoB Type B fi & .8 gd efJue.8 ff / fecfiocfTTo nefl0opi / ftffBafftJA OfnSfflCfrujft u 8m FIG. 10 fig.Z LRWTH. cm. Q, 0.0 FIG. eleven