Pulsator

FIELD: machine building.

SUBSTANCE: pulsator comprises a casing with sealed pulsation chambers 1, where motor-driven shafts 2 with discs rigidly fixed on them are mounted coaxially to the chambers. The casing consists of 4 vertically set cylindrical pulsation chambers 1 that are communicating and are symmetrically set on mutually perpendicular axes in plan view. The chambers 1 are connected pairwise by two parallel upper branch pipes and perpendicular to them - by two parallel lower branch pipes. The discs are installed at an angle to the shafts 2 in their central part so that their upper edge is below the upper branch pipe and the lower edge is above the lower branch pipe. External branch pipes 8 are mounted at the casing diagonals on the outer side of every chamber at half of their height.

EFFECT: increased efficiency of item washing.

4 cl, 5 dwg

 

The invention relates to the field of power engineering, in particular to methods of washing contour of atomic systems paroprovody installations (APPU), and can be used for flushing of piping and hydraulics systems of various transportation facilities, and repair of power and transportation systems.

The life and operational reliability of systems for various applications depends on the purity of inner cavities, careful cleaning can prevent premature wear of critical components and to increase the duration of their uptime. Therefore, the purity requirements of internal cavities and channels are required for virtually all systems and power plants, including nuclear. These requirements are set out in the relevant regulations.

Modern washing methods can be divided into instantaneous and intense. The duration of the wash systems running method is sufficiently large, and the approximate complexity of flushing pipelines hydraulic systems can be up to 40% of the total time spent on the manufacture and Assembly of the entire unit. The drive power of once-through wash stand in shipbuilding can reach more than 100 kW, so the cost of electricity across Cadastro the part of the plant is very significant.

These shortcomings of the method straight flush can be greatly reduced using the method of intensive leaching. For intensive wash in flow wash stands include devices intensification flushing of pipelines and systems.

There are several methods of intensive flushing of pipelines and systems. Of these methods the most practical spread rinsing method of a pulsating flow and flushing method of changing the direction of movement of the scrubbing medium.

The pulsating flow of the scrubbing medium arises from the operation of the pulsator, which connects to a flow bench washing directly in the path or a parallel path. When the pulsator occurs flow with pulsatile flow and pressure washing environment.

The changed direction of flow of the scrubbing medium is created using a system of switches that are installed directly in the path of flow of the wash stand, for changing the direction of flow must be turned off, the drive of the stand to avoid water hammer.

Known hydropulse along.with. No. 520460, providing a pulsating flow of the scrubbing medium (fluid)containing a cylindrical housing with radial inlet and outlet Windows for work and communicates with them the distribution box, the implementation of the tion on the outer cylindrical surface of the spool, rotating inside the housing. Distribution box spool is made of profiled in accordance with the form specified pulse cleaning of the environment and housing in the zone of discharge of the working window is placed a device for changing the shape of this working window, made for example in the form of a set of profiled plates, fixed in the regulations define required for a given pulse shape of the window.

The disadvantages of this pulsator are:

- washing medium when the pulsator is moving in only one direction, so it is possible the accumulation of stagnant zones of dirt in the wash cavity, and as a result, additional time is needed for leaching;

- given the shape of the pressure pulse cleaning of the environment is determined by the profile of the distribution box in the rotating spool and a set of core plates in the zone of discharge of the working window of the housing, so the pulsator does not have the regulatory capacity of the pressure pulse in a wide range without stopping the process of leaching cavities.

A device that changes the direction of flow of washing liquid to wash the product and wash stand with a valve system connected to the hydraulic bridge (J. "Shipbuilding". No. 6. 2011 (November-December), S. 56).

The disadvantage of this device are:

- when washing the strips is she using this device does not occur pulse pressure variation washing environment, that slows the separation of particles from the washed surfaces;

- before switching the direction of motion of the scrubbing liquid to eliminate the phenomenon of water hammer, you must stop the washing process.

The closest in technical essence and the achieved result is a pulsator in A. S. No. 335015 adopted for the prototype.

The pulsator includes a housing, comprising sequentially arranged, communicating the high pressure chamber and the chamber pulsations passing through the camera shaft, mounted on the shaft in the high pressure chamber, a rotating disc with Windows and placed between the rotating disk and the camera pulsations stationary disk with Windows, identical to the Windows of the rotating disc and located at the same distance from the axis of the shaft, and that the Windows of the rotating disc. Open each of the disks have different sizes and are located on the fixed disk radius, in order to increase or decrease their size, and on a rotating disk in a spiral, in order so that when the disk rotates, the combination of its Windows with Windows of the same size fixed disk.

However, the prototype has the following disadvantages:

- when the pulsator washing medium moves in only one direction, so it is possible the accumulation of stagnant zones of dirt in the wash cavities, so you need extra is time for washing;

- given the shape of the pressure pulse cleaning of the environment is determined by the number and diameters of the holes in the Windows, which are located on the rotating and stationary disks, so the pulsator does not have the regulatory capacity of the pressure pulse in a wide range without stopping the process of washing and replacement of rotating and stationary discs with a different number and diameter of holes.

The task of the invention is to develop a high-performance, reliable and relatively inexpensive pulsator with adjustable periodic pulse pressure wash water in a wide range while changing the flow direction for one revolution of the drive shaft of the pulsator only in the cavity wash products, without changing the direction of flow flow of the flushing stand.

The main technical result, which provides a task, is to improve the washing efficiency of the products due to:

- combining the two methods of washing products - generate periodic pressure pulses and changing the direction of flow of the scrubbing medium;

control pulse pressure drilling fluid in a wide range without stopping the drive flow of the wash stand.

Getting the technical rez is ltate provided by the pulsator is made in the form of housing with sealed chamber pulsations, which coaxially them mounted rotating engine shaft with rigidly mounted disks. In addition, the casing is made of 4-connected and symmetrically located on mutually perpendicular axes vertically mounted cylindrical chambers pulsations, United in pairs by two parallel top tubes and perpendicular to them, two parallel bottom nozzles. The disks are set at an angle to the shafts so that their upper edge is located below the upper nozzle and the lower edge above the lower pipe, and a gap between the inner wall of the chamber and the outer edge of the disc should be no more than 2 mm, and the disks rotate synchronously and in the same direction with a speed of not more than 1 rpm, in addition, the diagonals of the housing from the outer side of each camera is set to half the height of the outer pipe.

In the particular case of the pulsator at the ends of the outer pipes installed flanges.

In another particular case, the shaft with disks rotate from a common drive, for example, a gear motor through a system of gears.

In the third special case profiles disks cameras pulsations made in the form of z-shaped.

The invention is illustrated in the following graphic figures:

F the year 1 General view of the pulsator.

Fig.2 Section A-A cross section of the pulsator through the upper nozzles.

Fig.3 Section B-B (rotated 90), a longitudinal section of the camera ripple.

Fig.4 diagram of the operation of the pulsator and its connection to the wash stand and wash the product. The maximum flow of washing liquid to wash the product in the direction of A.

Fig.5 diagram of the operation of the pulsator and its connection to the wash stand and wash the product. The flow of washing liquid to wash the product is not present.

The pulsator consists of the following elements.

The pulsator is made in the form of the body (Fig.1), which consists of four chambers pulsations 1. Each chamber pulsations has a rotating shaft 2 with the disk 3, one of the top 5 and one lower opening 7, through which the camera pairs are connected to each other, the upper 4 and lower 6 nozzles for internal hydraulic connections the four chambers of the pulsations. For external hydraulic connection between the outer pipe 8 is equipped with flanges 9 and through the flange connection 10 is connected to a wash product 11 and wash stand 12 (Fig.4, 5).

Luggage ripple 1 made in the form of shells and two caps - the top 13 and bottom 14. In the top cover 13 and the bottom cover 14 has bearing assemblies and seals designed to rotate them in the shafts 2, as well as for sealing gaps of the surface the values of rotation in bearing assemblies.

In the middle part of the rotating shaft 2 at an angle thereto fixed disk 3, and the top and bottom edges of each disk can be bent and have a side profile of a z-shaped. The gap between the inner wall of the shell of each chamber pulsations 1 and the outer edge of the rotating disk 3 must be at least 2 mm

The pulsator is equipped with the necessary automation system, switching software and instrumentation (instrumentation), all of the controls displayed on the remote control (not shown).

The pulsator operates as follows.

Before you begin the pulsator is connected to the wash stand 12, consisting of a pump, a feeder tank and the washing chamber, and to wash the product 11 according to the scheme depicted in Fig.4, 5. Four of the outer pipe 8 via the flange connection 10 is connected to wash the product 11, and wash stand 12 according to the following scheme: pulsator washing stand 12, the pulsator - wash product 11; pulsator washing stand 12; pulsator - wash product 11. Then fill the wash water to the entire system, consisting of a pulsator, the washing stand and wash products.

After that, the operator using system automation (SA) control the operation of the pulsator includes one of the programmed modes washing. Cleaning mode is opredelennosti consecutive starts, stops, and change speed gear motor, which leads to changes in pressure and direction of flow of flush water to wash the product 11 intervals of time. The maximum speed of revolutions of the shaft with the disks obtained by calculation, should not be more than 1 rpm to avoid the possibility of water hammer.

Geared motor driven CA, rotates drive shaft with pinion. From the drive shaft through gearing, the rotation is transmitted simultaneously to the four driven gears mounted on the shafts 2, which leads to the rotation of all four rotating disks 3 with the same speed. Revolving inside each cell pulsations 1, disk 3 (Fig.4) suitable to the passage bore of the outer pipe 8 turn the top, lower shelf, thus there is a hydraulic connection of the outer pipe 8 with the lower pipe 6, with the upper pipe 4 each camera ripple 1 and the corresponding change in flow (Fig.4, 5). Synchronous rotation of the disk 3 in all four chambers of the pulsations 1 leads to programmed to reverse the flow of water to wash the product 11.

Flow scheme of wash water under the various provisions of the disk 3 is set forth in Fig.4, 5. This flow chart shows the maximum flow of flush water and the flow direction in pan isdel and 1 in direction A, while turning the rotating disk 3 by 180 in the cells ripple 1 (Fig.4 relative to Fig.5) is the maximum water flow in opposite to A direction.

When the rotation of the disk 3 is continuously changing flow cross section of flow of flush water in the pipes 4, 6, 8 and, therefore, there is a continuous change of pressure, and every 0.5 turnover disk 9 is the change in the direction of flow of flush water to wash the product 11, the nozzles 4, 6, 8 and cameras ripple 1 (Fig.4, 5).

When rotating disks simultaneously and periodic overlapping stream of washing liquid flowing from the wash stand and wash products, at the top or bottom openings of each chamber pulsations, thus changing the direction of flow of washing liquid only in the leached product.

The gap between the inner wall of each chamber pulsations and the outer edge of the rotating disk must be at least 2 mm, so that when the direction of flow of washing liquid has been part of the surge and thus lacked the conditions for the destruction of the leached product.

The drive rotating shaft 2 can be used a motor-reducer consisting of induction motor, assembled together with the bevel gear. The motor of which are equipped with sensor speed and equipped with frequency Converter for speed control. Management of a gear motor is controlled through a control system according to a specially developed program. Geared motor through a drive shaft with pinion and gearing connected with the driven gears cameras pulsations 1, simultaneously rotating the shafts 2 of all four chambers of the pulsations 1.

The present invention provides reliable, relatively inexpensive pulsator with the ability to connect to systems once-through wash stand and wash products, providing significant reduction of time washing and power savings by controlling the pulse wash water in a wide range without stopping the drive flow of the wash stand, and combining the two methods of washing products - generate periodic pressure pulses and changes the flow direction of the wash water.

1. Pulsator, comprising a housing with a sealed chamber pulsations, which coaxially them mounted rotating engine shaft with rigidly mounted disks, characterized in that the casing is made of 4-connected and symmetrically located on mutually perpendicular axes vertically mounted cylindrical chambers pulsations, United in pairs by two parallel top tubes and perpendicular the im - two parallel bottom nozzles, disks are set at an angle to the shafts in their middle part so that their upper edge is located below the upper nozzle and the lower edge above the lower pipe, and a gap between the inner wall of the chamber and the outer edge of the disc should be no more than 2 mm, while the disks are rotating synchronously and in the same direction with a speed of not more than 1 rpm, in addition, the diagonals of the housing from the outer side of each camera is set to half the height of the outer pipe.

2. The pulsator under item 1, characterized in that at the ends of the outer pipes installed flanges.

3. The pulsator under item 1, characterized in that the shaft with disks rotate from a common drive, for example, a gear motor through a system of gears.

4. The pulsator under item 1, characterized in that the profile disks made in the form of z-shaped.



 

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