RU177206U1 - COILABLE, VIBRATION RESISTANT MULTI-JET NOZZLE PUMP EJECTOR - Google Patents

Abstract

The utility model relates to inkjet technology, mainly to liquid-gas ejector pumps used in vacuum systems, and intended, in particular, for pumping various vapors and gases from containers and pipelines. A useful model, in comparison with analogues, allows to obtain the following advantages : increased efficiency of the ejection process, by ensuring increased alignment of the nozzle apparatus / pipes / nozzles with mixing chambers; reduced power losses of the active liquid, due to a decrease in nozzle vibration atov / pipes / nozzles; improved process start-up and output to the pump-ejector mode ZHGS flow stabilization by transmitting reduced pressure from the nozzle medium in a passive outlet; stabilization / leveling operation modes, due to depressurization of the outlet pipe.

Description

The utility model relates to inkjet technology, mainly to liquid-gas ejector pumps used in vacuum systems, and intended, in particular, for pumping various vapors and gases from tanks and pipelines.

Currently, monogas nozzle liquid-gas ejectors are widely used in vacuum systems of thermal power plants. For example, water-air ejector pumps of the model EV-7-100 consist of seven parallel-connected flow parts / channels having a common receiving chamber (Sokolov E.Ya., Singer N.M. Inkjet devices. - 3rd ed. Revised. - M .: Energoatomizdat, 1989-352 pp., A.S. 484378 USSR, MKI F28b 9/10. Water-jet gas-liquid ejector / GI Efimochkin, B.E. Korennov (USSR). - No. 1903066 / 24-6. ; Stated 09.04.73; Publish. 09.15.75, Bull. No. 34, Bulletin of the South Ural State University (SUSU), No. 1, 2005) (1-3). To reduce the negative effect of the angular distortion of the jet emanating from the nozzle, the receiving chamber of such pumps / ejectors is shortened. However, the shortened length of the receiving chamber worsens the initial suction of the ejected gas into the receiving chamber itself from the inlet pipe. The efficiency of such devices also largely depends on the alignment of the working nozzles and mixing chambers. In practice, in the manufacture of such pumps it is difficult or, in some cases, impossible to ensure sufficient alignment of the nozzles (jet streams) relative to their mixing chambers.

Known technical solutions for pumping and conveying devices [patent for utility model No. 155118 of the Russian Federation, IPC B65G 53/14, 2015 and patent for utility model No. 99466 of the Russian Federation, IPC B65G 65/30, 2010) (4, 5] having an elongated nozzle apparatus , in which the nozzle is located in the receiving chamber. The technical solution [4] has one nozzle apparatus equipped with one centering washer. The presence of a centering washer reduces the misalignment of the nozzle apparatus relative to the mixing chamber. But the washer, according to its technical definition / term, except for the central hole has other holes, and thus in the technical solution [4] is impermeable to the suction / transported medium. Therefore, the washer in the solution [4] can be located in the chamber only up to the supply line of the suction / transported medium. This determines the distance of the centering washer from the mixing chamber Which, in practice, can lead to insufficient alignment of the nozzle apparatus relative to the mixing chamber. liyat on the efficiency of the process.

Ejector pumps model EV-7-100 [1] are multi-nozzle, but do not have any centering device nozzles relative to the mixing chambers. The nozzle apparatus of the transport pump-ejector [4] is equipped with a centering element - a washer. But this ejector pump is single-nozzle, which limits its effective field of application when working with liquid-gas media.

Due to these contradictions, none of these devices can be accepted as a prototype of the claimed utility model. Because The technical solution of the claimed model is as follows: the presence of several nozzle devices, with their simultaneous centering, which is carried out by one or more guides. In this case, the guide, in addition to the holes for centering the nozzles, has additional holes for the passage of the pumped medium. The presence of windows allows the guide to be placed in close proximity to the mixing chambers, which significantly increases the accuracy of centering the nozzles relative to the chambers.

The utility model allows to solve two tasks connected with each other:

to provide increased alignment of nozzle pipes with nozzles relative to the mixing chambers in a multi-nozzle pump-ejector;

reduce vibrations of nozzle pipes during operation of the ejector pump.

The tasks in this utility model are solved as follows.

To solve the first problem, a guide is installed in the receiving chamber, with centering holes for nozzle pipes. The guide has windows for the passage of the suction medium. That allows you to install the guide directly in front of the mixing chambers, and thereby provide increased alignment.

To solve the second problem, the nozzle pipes are equipped with vibration isolators located in the centering holes of the guide.

In FIG. 1 presents a possible implementation of the claimed utility model. In FIG. 2 shows its cross section. In FIG. 3 shows a possible variant of the guide.

The inventive pump ejector contains the following elements:

the inlet pipe of the active medium 1,

suction medium inlet 2,

receiving chamber 3,

removable replaceable nozzle pipes 4,

nozzles 5,

mixing chambers 6,

outlet pipe 7,

guide 8,

holes 8-a,

vibration isolators 9,

centering holes 9-a,

message highway 10,

message control device 11,

pressure gauges 12 and 13,

discharge / pressure relief line 14,

discharge control device 15.

The ejector pump operates as follows.

The active medium, for example water or a hydrocarbon mixture, is supplied under high pressure through the nozzle 1 to the nozzle pipes 4, the nozzles 5 are installed at its outlet. The active medium emerging from the nozzles 5 with high speed enters through the lower part of the receiving chamber 3 into the mixing chambers 6 When moving in the receiving chamber, the active medium entrains a suction medium (for example, low-pressure gas) from the lower part of the receiving chamber 3. Gas is drawn into it through openings 8a from the upper part of the chamber 3. Gas initially enters the upper part of the chamber 3 and h inlet pipe 2. The flows of the active medium, mixed with the gas in the chambers 6, fall into the pipe 7, which the liquid-gas mixture (GHS) leaves due to the residual energy. The efficiency of the ejector pump is improved thanks to the guide 8, the presence of which increases the accuracy of centering of nozzle pipes with nozzles relative to the mixing chambers 6.

To reduce the vibrations that occur during the operation of the ejector pump, the nozzle pipes are equipped with vibration isolators 9 located in the centering holes of the guide 8.

The technical result from the application of the solutions of this utility model is as follows:

increased efficiency of the ejection process, by ensuring alignment of the nozzle pipes with nozzles relative to the mixing chambers;

reduced power losses due to reduced vibration of nozzle pipes.

To achieve a technical result, the pump-ejector containing the inlet pipe of the active medium, the inlet pipe of the suction medium, a receiving chamber of both media, removable replaceable nozzle pipes with nozzles, a mixing chamber, an outlet pipe of mixed media, includes one or more guides with centering located in the receiving chamber holes for holding the nozzle pipes and centering them relative to the mixing chambers, and the nozzle pipes are equipped with vibration isolators located in the centering holes, and for medium passage sucks in additional guide holes formed.

Thus, the application of the claimed utility model allows to obtain the following advantages compared to analogues:

increasing the efficiency of the ejection process, by ensuring the alignment of nozzle pipes with nozzles relative to the mixing chambers;

reduction of power losses due to reduction of vibrations of nozzle pipes.

Claims (2)

Coaxial, vibration-proof multi-jet nozzle pump-ejector comprising an active medium inlet pipe, a suction medium inlet pipe, a receiving chamber of both media, removable replaceable nozzle pipes with nozzles, a mixing chamber, a mixed media outlet pipe, characterized in that it includes one located in the receiving chamber or more a guide with centering holes for holding the nozzle pipes and centering them relative to the mixing chambers, and the nozzle pipes are provided with vibration isolators located centering bores for the passage of a medium is sucked into the guide hole made further.

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