RU2000549C1 - Metering device for viscous component introduced in pipeline - Google Patents

Abstract

Use the introduction of low consumption components in oil pipelines. SUBSTANCE: dispenser comprises a pipeline, a constricting element connected to the pipeline, a hollow body in the form of a metering and working cylindrical cavities separated by a sealed partition, dual first and second pistons, nozzles, a spool valve, a container for a viscous component, the spool valve being installed coaxially with the housing on its outer wall from the side of the working cylindrical cavity and is mechanically connected with twin pistons. The metering cavity of the housing is connected to the cavity of the constricting element through the nozzle, the first piston is located in the working cylindrical cavity of the housing, and the second piston is located in the metering cavity of the housing. In this case, each of the chambers of the metering cavity of the housing formed on opposite sides of the second piston is connected by nozzles with a container for a viscous component and with a cavity of the constricting element, and the spool valve through the inlet pipe is connected with the cavity of the pipeline, through the outlet pipe with the cavity of the constricting element through two other nozzles, respectively, with chambers of a working cylindrical cavity formed on opposite sides of the first piston. 2 ill. 73 C

Description

The invention relates to automatic dosing and can be used to introduce low consumption components into oil pipelines.

Known dispenser containing a housing with a consumable capacity, a shut-off valve and a piston with a hydraulic actuator, the piston is equipped with a valve and is made in the form of a cup, in the bottom of which are located the valve seat and sleeve (and S. M-553461, class G01 F 11/00, 1977).

The disadvantage of this device is its complexity, due to the presence of hydraulic and electrical circuits for automatic control

The technical solution closest to the invention is a viscous component dispenser comprising a pipeline, a constricting element connected to the pipeline, a hollow body in the form of a metering and working cylindrical cavities, dual first and second pistons, a nozzle, the metering cavity of the housing being connected to the cavity element through the nozzle, the first piston is placed in the working cylindrical cavity of the housing, and the second piston is in the metering cavity of the housing (A.S. No. 1530921. CL G 01 F 13/00, 1986).

A disadvantage of the known device is the insufficiently high performance associated with the inability to repeat the process until

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automatic mode, which reduces the autonomy of its use when it is necessary to continuously introduce additional substances, for example corrosion inhibitors, into the pipeline for a long period of time.

The purpose of the invention is to increase the autonomy of the dispenser,

The goal is achieved due to the fact that a spool valve, additional nozzles, a container for a viscous component, and Ј cavities of the casing are separated by a sealed partition are introduced into the dispenser, and the spool valve is installed

flax coaxially to the casing on its outer wall from the side of the working cylindrical cavity and mechanically spaced with twin pistons, each of the chambers of the metering cavity of the casing, formed against

the positive sides of the second piston is connected by nozzles with a container for a viscous component and with a cavity of the constricting element, and the spool valve through the inlet pipe is connected to the cavity of the constricting element, through the other two cuttings, respectively, with chambers of the working cylindrical cavity formed from opposite sides of the first piston,

In FIG. 1 shows a dispenser device; on figa, b - spool valve. The dispenser contains a housing 1 (Fig. 1), inside which a twin piston 2 is placed. A sludge 3 is attached to the piston 2 to the actuator 3 of the spool valve 4.

Cavities in the housing 1 on both sides of the large (first) piston from the twin piston 2 are connected by nozzles 5 and 6 to the spool distributor 4. Cavities on both sides of the smaller (second) piston from the twin piston 2 are connected by means of the nozzle 7 and check valves 8 with a container 9 of a viscous component (liquid) and using a pipe 10 and non-return valves 11 are connected to the outlet pipe 12. The pipe 12 connects the drain channel of the 4 g spool valve with a narrow part of the restriction element 13. The inlet pipe 14 is connected through an adjustable emy nozzle 15 wide part of a tapered element 13 the inlet distributor spool bodies 4.

The spool valve 4 (Fig. 2) comprises a housing 16, inside of which a spool 17 and a ball retainer 18 of the spool position are located. The rod 13 is connected to the spool 17 through the accelerating springs 19 and 20

The proposed device operates as follows.

When a stream of liquid flows through the constricting element 13 (Fig. 1), a part of the liquid

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the bones through the nozzle 14, the nozzle 15, the spool valve 4 and the nozzle b enters the cavity of the housing 1. Under pressure of the fluid, the piston 2 starts axial movement, while the fluid located on the other side of the large piston through the nozzle 5, the spool valve 4 and the nozzle 12 enters the narrow zone of the constricting element 13. In connection with this. that in the narrow zone of the constricting element 13, the pressure of the fluid pumped through the pipeline is less than in its wide part, the fluid from the nozzle 12 is injected by a stream passing through the pipeline. At the same time, a viscous component is introduced into the nozzle 12 through the nozzle 10, valves 11 and the piston cavities of the small piston of the twin piston 2. Upon reaching the extreme position, the piston 2 moves the spool 17 through the rod 3 (Fig. 2), thereby switching the inlet and outlet ports. Piston 2 starts moving in the opposite direction.

The viscous component from the container 9 through the nozzle 7 and the valves 0 is sucked in turn into both piston cavities of the small piston and, with the reciprocating movement of the twin piston 2, is continuously fed into the pipeline. The feed rate is controlled by the nozzle 15.

Acceleration springs 19 and 20 were introduced to increase the clarity and reliability of operation of the spool valve. When the piston 2 and rod 3 are moved slowly, the spring 20 (Fig. 2a) is gradually compressed, not the spool 17 being fixed, held by the latch 18.

When approaching the extreme position, the thickening of the stem 3 abuts against the jumper made inside the hollow spool 17 and, overcoming the force of the retainer 18, moves it along the axis. The spring 20 expands and quickly moves the spool 17 to another fixed position. When the piston 2 and the rod 3 move in the opposite direction, the process repeats, the spool 17 is returned to its original position using the spring 19 (Fig. 26).

The proposed dispenser can operate continuously in an autonomous mode due to the pressure difference of the pumped liquid in the narrow and wide parts of the constricting element.

Compared with the prototype, the proposed solution has the following advantages: uniformly introducing the viscous component and the pipeline, which is ensured by the use of both piston strips. a small piston; alternately suctioning and displacing the injected material; an extended range of rogueproducts for the daily administration of a viscous component, for example a corrosion inhibitor, from 0.1 to 25 l / h; battery life for a long time (up to 2-3 months)

Claims (1)

The formula is invented and a dispenser of a viscous component in a pipeline containing a pipeline, a constricting epemont, connected to the pipeline, a hollow body in the form of a metering and working cylindrical cavities, joined the first and second pistons, a pipe, and the metering cavity of the body is connected to the cavity of the constricting element through , cut the nozzle, the first piston is placed about the working cylindrical cavity of the housing, and the second piston - and the metering cavity of the housing, with the exception of the fact that in the NDGO / 3 / w one of them is a common distributor, more accurate and quieter pipes capacity for easy access by needle and housing cavity pi /;, 1 they are sealed by a septum,, n I will install a special distributor i foocno to the case pa its outer wall is the th cylinder working cylinder. cavity of the cavity n is mechanically associated with dual n I the parts of the housing formed on opposite sides of the second piston are connected by tubes with the capacity of the viscous component and with the cavity of the constricting element ss. The one-way distributor of one branch pipe is connected to the cavity T1;. Г of ropod, through the current branch pipe - from the strips i- about the constricting element, through the other two pipes corresponding to the chambers of the working cylindrical cavity, by image-panes from the opposite sides of the perpHP R 3 | it LF. FIG. / / 1 € V F "g 2 ,sixteen ii