SU899053A1

SU899053A1 - Distributing-regulating device

Info

Publication number: SU899053A1
Application number: SU802942876A
Authority: SU
Inventors: Григорий Исаакович Гиневич; Людмила Андреевна Артемьева
Original assignee: Предприятие П/Я А-1788
Priority date: 1980-06-16
Filing date: 1980-06-16
Publication date: 1982-01-23

Description

(54) РАСПРЕДЕЛИТЕЛЬНО-РЕГУЛИРУЮЩЕЕ УСТРОЙСТВО(54) DISTRIBUTION-REGULATORY DEVICE

ii

Изобретение относитс к устройствам дл равномерного распределени пленки по поверхности испарени и регулированию толщины пленки в пле- . ночных тепло-массообменных аппаратах, широко используемых в химической и смежных с ней отрасл х промышленности , где осуществл ютс процессы тепломассообмена .The invention relates to devices for uniformly distributing a film over an evaporation surface and controlling film thickness in a ple. night heat mass transfer apparatus, widely used in the chemical and related industries, where heat and mass transfer processes take place.

Известен трубчатый пленочно-тонкослойный аппарат, в котором пленочшлй слой жидкости образуетс при помощи полых трубчатых вставок, оборудованных спиральной навивкой и смонтированных внутри трубок 1 .A tubular film-thin-layer apparatus is known, in which a film layer of liquid is formed using hollow tubular inserts equipped with spiral winding and mounted inside the tubes 1.

Така конструкци не обеспечивает образовани равномерного пленочного сло ,так как жидкость стекает с конца спиральной навивки и смачивает не всю поверхность трубки. При помощи этого устройства, нельз регулировать толщину пленочного сло ,а значит и производительность тепломассообмен1тка .Such a structure does not ensure the formation of a uniform film layer, since the liquid flows from the end of the spiral winding and does not wet the entire surface of the tube. With the help of this device, it is impossible to regulate the thickness of the film layer, and hence the performance of heat and mass transfer.

Известен тепло-массообменньй аппйрат пленочного типа, в котором между вертикалышми перегородками установлены распределители, выполненные из пересекакищтхс пластин, образующих злемент V-образной формы и снабженные эластичными полосками. Пластины размещены в несколько р дов по высоте вертикальной перегородки A heat-mass transfer device of the film type is known, in which distributors are installed between the vertical partitions, made of intersecting plates, forming a V-shaped element and provided with elastic strips. Plates are placed in several rows along the height of the vertical partition.

Така конструкци сложна и неудобна в эксплуатации, и хот достигаетс достаточно равномерньй пленочный слой, регулировать его.толщину не- представл етс возможным.Such a structure is complicated and inconvenient in operation, and although a sufficiently uniform film layer is achieved, it is not possible to adjust its thickness.

Наиболее близким техническим ре15 шением к предлагаемому вл етс устройство дл калибровки жидкости к пленочному испарительному аппарату, включаищее калибровочный элемент в виде усеченного конуса,который The closest technical solution to the present invention is a device for calibrating a liquid to a film evaporator apparatus, including a calibration element in the form of a truncated cone, which

Claims

30 is assembled from individual elements (washers of a certain height and taper) and is provided with a movable body vertically f 33. This device has a number of significant drawbacks. Its design consists of four main parts of a complex configuration and a set of interchangeable washers. It is inconvenient to adjust the film thickness: every time you adjust, you have to completely disassemble the entire device ti replaceable set of washers, set the necessary gap between the washers and the device body. Due to the fact that the adjusting device is installed on the outer surface of the projections of the pipes of the plastic-exchange apparatus, the distance between the tubes, and hence the dimensions of the body, must be increased, which leads to an increase in metal intensity. . The purpose of the invention is to increase the uniformity and ensure the accuracy of the film peening. The goal is achieved by the fact that the distribution and control device for heat and mass transfer apparatus, including a calibration element made in the form of a truncated cone, a threaded and spacer sleeves, the upper part of the calibration element is provided with a screw-screw cylinder from the outside on the outer surface of the truncated cone calibration element crosspiece. It is advisable to use gas oil resistant rubber as a plastic material. Figure 1 shows the device, a longitudinal section; figure 2 - section aa in figure 5. The device includes a sleeve 1, made in the form of a cylinder, a transition. In a truncated cone with an outer thread cutting, on which the clamping sleeve 2 is screwed, and inside sleeve 1, on sleeve two is inserted sleeve 3, which is fastened with a nut A. A cross 5 is fitted on the outer surface of the tapered sleeve 1, which is alternately equipped with a cross shaft the protrusions, and the grooves through which the viscosity flows, the thickness of the wall of the sleeve at the lower base should ensure its elastic state. The cross 5 is also made of rubber to. It has V-shaped grooves on the protrusions to interact with the base of the pressure sleeve 2. The distribution and control device operates as follows. By rotating the clamping threaded bushing 2, the external thread of the bushing I presses the cross 5, which is lowered down the conical surface of the bushing 1, which seals the latter inside the apparatus tube. It does not matter at what height from the top of the tube this device is installed. Rotating the nut 4, move the spacer sleeve 3 along the slots of the sleeve I, push it upwards and, with its tapered base, expands the elastic collar of the sleeve 1, bringing the base edge to the inner surface of the apparatus tube. In this way, the necessary clearance is adjusted, and hence the thickness of the film layer. Rotating the sleeve 3 in the opposite direction, the elastic base of the sleeve 1 is weakened, which, because of its elasticity, moves away from the inner surface of the tube, increasing the gap. To dismantle the distribution and control device, it is enough to loosen the clamping threaded sleeve 2. The proposed device is easy to install and easy to use, as the film thickness is adjusted without disassembling the entire device, but only by changing the position of the base of the elastic sleeve with noMonci rotation of the spacer. Making the device from an elastic material, for example, from a gas-oil resistant rubber, reduces corrosion and ensures operation in the temperature range from 140 ° C to 100 ° C and apply this DEVICE in the process of evaporation, pentaerythritol under vacuum at 65-67 ° C, as well as for evaporators devices in other industries. Claim 1. Distribution and control device for heat and mass transfer apparatus of film type, including a calibration element, made in the form of a truncated cone, threaded and expansion bushings, so that, with increasing uniformity and ensuring the accuracy of adjusting the film thickness; the upper part of the calibration element is equipped with a screw-screw cylinder on the outside; the device is equipped with a clamping sleeve screwed onto the cylinder's external thread; the surface of a truncated cone gauge element cross. In this case, the calibration element and the crosspiece are made of plastic material.

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2. The device according to claim 1, about t l and so that in the quality of a plastic material use gas-resistant rubber.

Information sources,

taken into account in the examination

1.Nikitin A.V. and others. Film 10 thin-layer devices, - Chemical

and petroleum engineering.

2. USSR author's certificate number 615942, cl. B 01 O 3/28, 1972.

3. Authors certificate of the USSR 15 169059, cl. In 01 About 1/30, 1963.

Film

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