Pulsation valve submersible pump

 

(57) Abstract:

The pump is designed for use in the chemical industry, in particular in submersible pump installations, and can find application in chemical, petrochemical, and other industries, mainly in the nuclear industry for the handling of radioactive effluents and solutions from containers. The pump contains Polaroid, the inlet and outlet ball valves, injection pipe, a flexible pipe connected to the inlet ball valve, the ball is made of floating in the liquid. The exhaust valve is placed in service and installed in polycaproamide, which made holes and the plate is placed in the case. Moreover, the inlet ball valve is provided with a limiter lifting the ball with the fairing. The invention provides enhanced functionality, increased reliability of operation in conditions of inaccessibility for maintenance and repair, reducing installation time. 1 C.p. f-crystals, 2 Il.

The invention relates to the field of chemical engineering, in particular to the submersible pump installations, and can find application in chemical, petrochemical, and other Onesti for pumping radioactive effluents and solutions from containers.

Known pneumatic submersible pump replacement, closest to the invention to the technical essence and the achieved technical result, which includes a housing, Polaroid, inlet ball valve with limiter lifting of the ball, and the discharge pipe from the exhaust ball valve, placed in the upper part of the discharge in the service area (ed. St. USSR N 620679 /CL F 04 F 1/02, publ. 1978).

A disadvantage of the known device, taken as a prototype, is the fact that before the removal of sediments will require an additional device to carry out their washing to form a slurry. In addition, the pulp is heterogeneous and contains solid particles up to 6 mm, and the penetration of these particles between the spherical seat and the ball can destroy the inlet ball valve, which reduces the reliability of the known pump. These drawbacks are due to the fact that in existing tanks storage radiochemical plants nuclear industry radioactive waste is in the form of a stock solution, slurry and sludge, with most activity concentrated in the pulp and sludge. Due to radiolysis temperature of the slurry reaches 120CI, you must first remove the pulp, and always from under the layer of mother liquor.

The present invention is to expand the functional capabilities of a pump of this type, as well as improving the reliability of its operation in terms of inaccessibility for maintenance and repair, reducing installation time and mean radiation exposure of the operating personnel due to more rational connection scheme.

The solution of this problem is provided by the fact that the pulsation valve submersible pump, comprising a housing, Polaroid, inlet ball valve with limiter lifting of the ball, and the discharge pipe from the exhaust ball valve, located in the service area, according to the invention, is further provided with a flexible pipe connected to the inlet ball valve, the ball is made of floating in the liquid, and the discharge pipe is installed in polycaproamide, the latter provided with a bottom and has a hole and is placed in the case. In a preferred embodiment of the pulsation valve submersible pump is additionally provided that a lift stopper ball inlet valve is equipped with a fairing.

Installing polycaproamide in case, the presence of holes in the upper part inside the body section of polycaproamide and the bottom at its bottom end, as well as placement of the injection pipeline in polycaproamide helped to create two of the separation cavity, the inner cavity of polycaproamide and the cavity between polycaprolactam and the housing, whereby the first liquid is expelled into the discharge line, and the second back into the tank, which contributes to erosion in the vicinity Flex sediment and prevents the assertion of the resulting slurry in the casing, and into the inlet ball valve on the shutdown period of the pump. In addition, politopoulou advance in the capacity of the reagents, wash solutions and water, and decontamination of the pump and its inlet valve.

Running the ball inlet valve floating in the pumping and flushing fluids, the presence of the fairing on the limiter allow lifting during operation of the pump and the installation of the liquid level falls below the valve in its seat and closes the inlet.

The invention is illustrated by drawings:

in Fig. 1 shows a General view of the pump in section,

in Fig. 2 shows the circuit connection.

Pulsation valve submersible pump contains (Fig. 1) case 1, the bottom of which has an inlet ball valve 2 floating in a liquid ball 3 made, for example, hollow, with the rise of the ball 3 is regulated by the stopper 4 and the deflector 5, in addition to the valve 2 is connected a flexible conduit 6. Polaroid 7 with an inlet pipe 8 and hermetically installed bottom 9 is mounted on the housing 1 so that the holes 10 made in 4 polycaproamide 7, was on the inside of the housing 1. The discharge line 11 to the inlet side 12 is installed in polycaproamide 7 and the outlet valve ball 13 from the outlet pipe 14 located in the service area of the pump.

According to the invention (Fig. 2) the pump is installed in the tank 16 through the bolt 17 in the concrete ceiling. Polaroid 7 through the inlet 8 and the exhaust valve 18 is connected to the distribution device 19, which is connected to the sources of pressure and suction. Through the inlet pipe 14 of the injection pipe 11 communicates with the shut-off valve 20, and promino the

The proposed pulse valve submersible pump operates as follows.

In the vessel 16 under the influence of the liquid column and / or vacuum polycaproamide 7 is filled in the housing 1 by the liquid coming from the tank 16 through a flexible pipe 6 through the inlet valve ball 2, ball 3, which floats in the fluid. Through holes 10 polycaproamide 7, the liquid fills the inner cavity of polycaproamide 7 above the level of the holes 10.

When switching distribution device 19 for the supply of compressed air, the latter displaces the liquid from polycaproamide 7, with one part of liquid in polycaproamide 7 below the holes 10, is displaced through the pipe 12 into the discharge line 11 and then transmitted to the line attached to the inlet pipe 14 through the outlet ball valve 13, and the other part of the liquid in polycaproamide 7 above the level of the holes 10 and in the inner cavity between the housing 1 and polycaprolactam 7 is displaced back into the tank 16 through the inlet ball valve 2, as the ball 3 POPs up under the fairing 14 limiter lifting 13, not preventing the reverse flow of liquid into the container 16. When all the liquid from the inlet clack 16. In addition, the breakthrough of compressed air through the discharge pipe 11 is excluded by the selection frequency ripple distribution device 19 or the value of the pressure of compressed air.

Then, connecting Polaroid 7 to the source of vacuum through a distribution device 19, the compressed air from the pump is discharged and Polaroid 7 again filled with liquid, repeating the cycle.

During operation of the pump open the valves 18 and 20 and the shut-off valve 21 is closed.

Flushing pump, if necessary, as follows. Shut-off valves 18 and 20 overlap and through the valve 21, which is open, make the flow of the washing solution. On politopoulou 7 and through holes 10 solution enters the housing 1. Ball 3 being in its upper position under the fairing 5 limiter lifting 4, does not prevent the free passage of drilling fluid through the flexible tubing 6 into the container 16, with stream erosion produces sediment with the formation of the pulp.

1. Pulsation valve submersible pump containing polysaprobic, inlet ball valve with limiter lifting the bowl and the discharge pipe from the exhaust ball valve, located in the area obsluzhivaniia made floating in the liquid, the discharge pipe is installed in polycaproamide, and the latter is provided with a bottom has holes and is placed in the case.

2. The pump p. 1, characterized in that a lift stopper ball inlet ball valve is equipped with a fairing.

 

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SUBSTANCE: proposed water lifting device contains lifting, suction and air delivering pipes and mixing chamber with inclined nozzle holes uniformly spaced over circumference of inner cup of mixing chamber. Axes of holes are generative of one-nappe hyperboloid of rotation. Suction branch pipe is furnished with hood head made in form of truncated cone with larger base pointed downwards and attachment of smaller base to end face of suction branch pipe. Vertical trapezoidal plates are installed on inner surface of hood head tangentially to cylindrical part of suction branch pipe in direction of circular inclination of axes of mixing chamber nozzle holes. Smaller bases of trapezia are arranged over outer perimeter of head.

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2 dwg

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