RU2341335C2 - Vortex apparatus - Google Patents

Abstract

FIELD: mechanics.

SUBSTANCE: vortex apparatus comprises casing wit upper and lower covers, the lower one making a condensate collector, gas inlet/outlet and condensate outlet branch pipes, partitions, vortex pipe, initial compressed gas flow rate control device and condensate-separation units. Aforesaid vortex pipe includes a cold flow and hot flow pipes. Initial compressed gas flow rate control device incorporates a screw-type tightening device (STD) with adjusting washer furnished with a cross-piece with stem arranged in the STD membrane hole. The said stem passes via the cold flow pipe and through the gland in the upper cover out from the apparatus and is furnished with the rotation drive. The condensate-separation units comprise pipe laid between the said partitions, two pairs of crosswise slots arranged opposite to each other on the hot flow pipe at the distance of (1.25 to 1.45) d, where d is the pipe ID, from the STD edge and shifted relative to each other by 90°. Note that the said slots are arranged along the axis at the distance of (0.15 to 0.25) d. The circular chamber outlet channels, inside the hot flow pipe, are terminates at the gap between the casing wall and thin-wall cylinder. The hot flow pipe outlet is furnished with a nozzle and thin-wall cylinder is provided with confuser-diffuser element making an injector.

EFFECT: control over initial compressed gas flow rate by external effects and higher efficiency of condensation-separation processes.

1 cl, 4 dwg

Description

The invention relates to vortex devices in which the Rank-Hilsh effect is realized - energy temperature separation of gas, and can be used in the oil, gas, chemical and other industries to produce cold and heat and for cleaning gas mixtures from condensing impurities.

Known vortex apparatus under the name of a three-flow vortex tube-TBT, used for purification of associated petroleum gas (f. "Chemical and oil and gas engineering", No. 7, 2000, S. 16-18).

The TWT contains a housing with gas inlets and outlets and condensate outlets, a tangential twisting device with a rectangular channel with a wedge-shaped element having the possibility of reciprocating movement, which is a device for controlling the flow of the original compressed gas, hot and cold flow pipes, a separating unit in the form of perforations or annular rupture of a hot flow pipe at a certain distance from the nozzle inlet and a condensate collector covering the hot flow pipe with a nozzle for outlet ode to condensate.

The disadvantages of TBT are as follows:

- in the gas flow control device, this is the location of the wedge-shaped element with a rod in the gas channel of the tangential input, which violates the aerodynamics of gas movement.

- the perforation of the hot flow pipe does not exclude the condensate from perforating holes, and in the case of an annular gap, it is practically impossible to align the two parts of the pipe, which leads to disruption in the aerodynamics of the movement of the rotating stream with a decrease in the efficiency of the temperature separation of the gas stream. The TWT does not use cold flow to cool the source compressed gas and the hot pipe, and the warm condensate in the condensate collector reduces the condensation efficiency of the vapors that are carried away from the TWT with cold and hot flows.

Closest to the proposed invention is a vortex apparatus (AS USSR No. 861914, Bull. No. 33, 09/09/81), comprising a housing with a top cover and a bottom condensate collector with gas inlet and outlet pipes and condensate outlet, partitions forming with the camera body vortex tubes with screw twisting devices (VZU), with orifice plates and an adjusting washer at the end, which is a device for regulating the flow of the source gas, and condensation-separating units.

The disadvantages of this vortex apparatus are:

- a change in the flow rate of the source gas in the vortex apparatus is possible only due to the displacement of the position of the adjusting washer at the end of the VZU after partial disassembly of the apparatus;

- to remove condensate in the hot flow pipe, screw-shaped slots are made - labor-intensive to manufacture, and a phase separator with spacer centering springs violates the hydrodynamics of the jets and can be displaced under gas pressure;

- the cold stream is not used in the apparatus to intensify vapor condensation.

The objectives of the invention are:

- providing regulation of the flow rate of the original compressed gas by external action in the vortex apparatus;

- increase the efficiency of condensation separation processes.

The tasks are solved in that the device for controlling the flow of compressed source gas contains a VZU with an adjusting washer, which has a cross with a rod installed in the diaphragm hole, and the rod passing along the axis of the cold flow pipe is withdrawn from the apparatus through an oil seal in the upper cover and is equipped with the mechanism of its rotation, and condensation-separating nodes include pipes between partitions, providing communication between the cold flow chamber and the space between the housing and the hot flow pipe, two ies of transverse slots located opposite to each other on the hot flow pipe at a distance of (1.25 ÷ 1.45) d (d is the inner diameter of the pipe) from the cut of the screw twisting device, made to an angle of 90 ° from the axis and offset relative to each other 90 °, and located in the direction of the axis at a distance of (0.15 ÷ 0.25) d; the chamber outside the hot flow pipe is circular, the outlet channels of which are brought into the gap between the wall of the housing and a thin-walled cylinder, lowered to the beginning of the lower cover-condensate collector; the outlet of the hot flow pipe is provided with a nozzle, and a thin-walled cylinder is equipped with a confuser-diffuser element, which form an injector; at the same time, a condensate drain is fixed at the end of the diffuser in the form of a semicircular section channel, coiled into a spiral before the start of the lower condensate collector cover.

In front of the nozzle, a crosspiece is installed in the hot flow pipe along the axis, and a movable valve is installed behind the nozzle along the axis, with a rod passing through the crosspiece pipe and the lower condensate collector cover outside the apparatus and entering its axial movement mechanism.

Figure 1 shows a vortex apparatus in longitudinal section.

Figure 2 is a view along aa.

Figure 3 is a view along BB.

Figure 4 is a view along arrow C.

The vortex apparatus contains a housing 1, an upper cover 2 and a lower condensate collector cover 3 with flanges, gas inlet 4 and gas outlet 5 and condensate outlet 6 nozzles, a fixed partition 7 and a removable 8, forming a receiving chamber 9 and a cold stream 10 with the camera body 1, and also between the fixed partition 7 and the bottom cover of the condensate collector 3, a combined chamber 11, a vortex tube with pipes of hot 12 and cold 13 flows, a screw twisting device (VZU) 14 with an adjusting washer 15 (see figure 4), equipped with a crosspiece 16 with a rod 17 installed into the diaphragm opening of the VZU, while the rod passing along the axis of the cold flow pipe is discharged through the gland (not shown) in the upper cover from the apparatus and is equipped with a mechanism for its rotation 18.

The condensation-separating nodes of the vortex apparatus include pipes 19, welded around the circumference in a fixed partition 7 (see figure 2). On top of the pipes 19 and the cold flow pipe 13, a partition 8 is put on and sealed with oil seals 20 and 26; the partition is clamped between the flanges of the housing 1 and the cover 2. The tubes 19 connect the space of the cold flow chamber 10 and the combined chamber 11; two pairs of transverse slots 21 and 22 (see FIG. 3) are made on the hot flow pipe opposite to each other at a distance of (1.25 ÷ 1.45) d (d is the inner diameter of the pipe) from the slice of the rotary grinding device, made to an angle width of 90 ° from the axis and 90 ° offset from each other and located in the direction of the axis at a distance of (0.15 ÷ 0.25) d; the space of the hot pipe through the slots is communicated with the annular chamber 23 outside the hot pipe 12, the output channels 24 of which are brought into the gap between the wall of the housing and a thin-walled cylinder 25, lowered to the beginning of the lower cover-condensate collector 3; the outlet of the hot flow pipe is provided with a nozzle 27, and the thin-walled cylinder 25 is equipped with a confuser-diffuser element 29, which together form an injector; at the same time, a condensate drain 30 is fixed at the end of the diffuser in the form of a semicircular cross-section channel, coiled into a spiral before the start of the lower condensate collector cover 3 and brought out of the partition 28.

The vortex apparatus operates as follows.

Compressed feed gas containing condensing impurities, such as high-boiling hydrocarbons and moisture, enters the receiving chamber 9 through the tangential inlet pipe 4, washing the cold stream pipe 13 and tube 19 with the cooled gas stream from the cold stream chamber 10.

Compressed gas enters the screw channels of the VZU 14, capturing the introduced and formed condensate through the slots 32 in the protruding pipe of the hot stream 12. Accelerating to sound speeds already in the screw channels, temperature separation and active condensation of high-boiling vapors begin, which continues after the outflow of the jets from the channels of the VZU. The liquid film, having reached the transverse slots 21, 22, is removed through them into the annular chamber 23, from where it passes through the channels 24 into the gap between the cylinder 25 and the housing 1 and flows into the lower condensate collector cover 3 and leaves through the pipe 6 outside the apparatus. By adjusting the valve 36, the required amount of cold flow generated due to temperature separation in the axial zone of the pipe 12 is discharged through the cold flow pipe 13 into the cold flow chamber 10. In the area of the diaphragm opening 34, the crosspiece 16 with the adjusting washer 15 with the stem 17 serves to unwind the cold flow and regulation of the flow rate of the source compressed gas. Using the mechanism of rotation of the rod 18, you can reduce or increase the output section of the channels 33 of the VZU 14 (see Fig. 4 with a view along arrow c on the adjusting washer 15 for a two-channel VZU in the fully open position of the output channels). A pair of VZU and an adjusting washer with a crosspiece is made of a material with a high slip coefficient, for example, a VZU made of fluoroplastic.

The cold stream from the chamber 10 passes through the tubes 19, cooling the original compressed gas, and enters the combined chamber 11, being a refrigerant for the hot stream in the pipe 12. The hot stream, having a higher pressure level, passes through the nozzle and injects the cold stream from the combined chamber. Condensate, not isolated through slots 21, 22 and introduced with a cold stream using the confuser-diffuser assembly 29, is collected in a steam trap 30 and flows through a screw channel into the lower condensate collector cover 3 and is removed through a pipe 6 for use.

In front of the nozzle, a crosspiece 35 is installed in the hot flow pipe to promote the flow, as shown in FIG. The mixed purified and dried stream is discharged from the vortex apparatus through the pipe 5 and valve 31 for use.

To regulate the operating mode of the vortex apparatus, a valve 36 is installed in front of the nozzle 27 along the axis 37 with a rod 37 entering the upper end into the central tube 38 of the crosspiece 35, and the lower end is discharged through the lower condensate collector cover 3 outside the apparatus and mounted in the mechanism of controlling the operating mode of the vortex apparatus 39 providing movement of the valve 36 along the axis.

Thus, based on the tasks set, the flow rate of the source compressed gas is carried out outside the vortex apparatus using the rotation-displacement mechanism of the adjusting washer, and the condensation and separation processes are intensified inside the vortex apparatus with the maximum use of cold flow cold and a successful solution of condensate separation, excluding it secondary evaporation. Provided a prostate in the assembly-disassembly of the apparatus and reliability in operation.

So the vortex apparatus can be effectively used to remove high-boiling hydrocarbons and moisture from natural and associated petroleum gases, which change costs depending on the season and for other reasons.

Claims (1)

A vortex apparatus comprising a housing with a top cover and a lower condensate collector cover, with gas inlet and outlet pipes and condensate outlet pipes, partitions forming a vortex tube with a cold flow pipe and a hot flow pipe with a chamber body, the space of which is communicated through the slots on the hot flow pipe with a chamber outside the hot flow pipe, a screw twisting device, a device for controlling the flow of compressed source gas, condensation-separating nodes, characterized in that the device for regulating The flow metering of the compressed source gas contains a screw twisting device with an adjusting washer, which has a cross with a rod installed in the orifice of the screw twisting device, and the rod passing along the axis of the cold flow pipe is withdrawn from the apparatus through the gland in the upper cover and equipped with a mechanism for its rotation and condensation-separating units include pipes between partitions, providing communication between the cold flow chamber and the space between the housing and the hot pipe current, two pairs of transverse slots located opposite each other on the hot flow pipe at a distance of (1.25 ÷ 1.45) d (d is the inner diameter of the pipe) from the section of the screw twisting device, made to a 90 ° angle from the axis and offset relative to each other by 90 °, and located in the direction of the axis at a distance of (0.15 ÷ 0.25) d, while the chamber outside the hot flow pipe is made annular, the outlet channels of which are brought into the gap between the wall of the housing and a thin-walled cylinder, lowered to start bottom cover condensate On the other hand, the outlet of the hot flow pipe is equipped with a nozzle, and the thin-walled cylinder is equipped with a confuser-diffuser element, which form an injector, and at the end of the diffuser there is a condensate collector in the form of a semicircular cross-section channel, coiled into a spiral before the bottom of the condensate collector cover, before the nozzle into the hot pipe flow mounted cross.

Images