RU2108135C1 - Gas cleaner - Google Patents

Abstract

FIELD: devices for separation of moisture, oil, water-and-oil emulsion and dust in gas-conditioning systems in pipe lines running from compressors and ventilators to consumers. SUBSTANCE: cleaner includes housing with gas supply and discharge branch pipes, swirler, separation chamber and drain hole. It also includes recirculation tube, discharge passage, discharge cock, slotted traps and circular trap. Tangential swirler made in form of slit is located in wall of separation chamber. Recirculation tube is located in rarefaction area of swirler. Slotted traps are made in form of skew slots in wall of separation chamber. Circular trap made in form of ring is located between wall and housing of separation chamber. Discharge passage is made in wall of separation chamber on side of swirler. Discharge cock is mounted on housing of separation chamber on side of discharge passage. EFFECT: high quality of cleaning; enhanced reliability and wide range of operating conditions. 3 dwg

Description

 The invention relates to devices for separating moisture, oil, oil-in-water emulsion, dust in gas conditioning systems in pipelines going from compressors of various types to consumption sources.

 Known gas purifier (separator) (ed. St. N 1717187, class B 01 D 45/12, 03/07/92), comprising a housing with gas supply and exhaust pipes, a drain hole, a swirl, a separation chamber, an annular gap (trap) for condensate deposition, an ejector to reduce the pressure in the separation chamber.

 However, this device has a drawback. The ejector is located behind the annular gap. During ejection, along with the gas, moisture is released from the separation chamber into the pipeline, which goes to consumers. The range of operation from the design mode is small.

 Known gas purifier (separator) (US patent N 4238210, class B 01 D 45/12, 1980), which is the prototype of the invention, comprising a housing with gas supply and exhaust pipes, a twisting device (swirl), a separation chamber. Holes are made in the wall of the separation chamber at an angle of inclination, which are arranged transversely to the rotational movement of the gas stream, there are annular openings for removing moisture (condensate), and a drain hole.

 However, this device has disadvantages. The holes during operation are clogged with coarse dust, oiled with oil, which leads to its partial or complete exit from the work. The ingress of moisture, oil, dust to consumers indicates poor cleaning. The range of operation from the design mode is small. Not effective at low cost.

 The analysis of the prior art indicates that the object of the invention is to provide a gas purifier having a higher quality of purification and reliability and a wider range of operation from the design mode.

 This is achieved by the fact that in the gas purifier containing a housing with gas supply and exhaust pipes, a swirl, a separation chamber, a drain hole, a recirculation pipe, a discharge channel, a discharge valve, slotted and annular traps are introduced, while the specified swirl is made tangential in the form of a gap and is located in the wall of the separation chamber, the recirculation tube is located between the wall and the housing of the separation chamber, an annular trap (in the form of a ring) is located between the wall and the housing of the separation chamber, the trap being located married to the swirl, the discharge channel is made in the wall of the separation chamber from the side of the swirl, the discharge valve is installed on the housing of the separation chamber from the side of the discharge channel.

 In FIG. 1 shows a section of the proposed gas purifier; figure 2 - scan slot trap; figure 3 - percent gas purification depending on the speed (flow rate) of the discharge channel, annular and slotted traps.

 The device (Fig. 1) contains an input inlet 1; tangential swirler 2; plug 3; reset channel 4; separation chamber 4, 5; the wall 6 of the separation chamber 5; slot trap 7; ring trap 8; drain hole 9; dump valve 10; dump valve body 11; lock nut 12 of the dump valve 10; outlet fitting 13; recirculation tube 14; swirl case 15; the housing 16 of the separation chamber 5.

In this case, the tangential swirler 2 is made in the form of a gap on the wall 6 of the separation chamber 5, the discharge channel 4 is made in the wall 6 of the separation chamber 5 and connects the separation chamber 5 to the beginning of the wall 6 of the separation chamber 5, the separation chamber 5 is formed between the housing 16 of the separation chamber 5 and wall 6 of the separation chamber 5, a wall 6 of the separation chamber 5 is mounted between the body of the swirler 15 and the housing 16 of the separation chamber 5, crevice trap 7 is formed on the wall 6 of the separation chamber 5 at an angle of 45 ^o with a smooth transition to the radius A ring trap 8 is formed between the end of the wall 6 of the separation chamber 5 and the housing 16 of the separation chamber 5, the drain hole 9 is made in the lower part of the housing 16 of the separation chamber 5, the dump valve 10 is screwed into the housing of the dump valve 11, the housing of the dump valve 11 is screwed into the drain hole 9 , the recirculation tube 14 connects the cavity of the separation chamber 5 with a swirling gas flow in the wall 6 of the separation chamber 5 in the area of the swirl 2, the swirl housing 15 is screwed into the housing 16 of the separation chamber 5.

 The device (Fig. 1) works as follows.

 The gas purifier is installed in the line of increased gas pressure in front of consumers. Gas from the pressure line through the inlet pipe 1 enters the slit of the tangential swirl 2. The gas flow swirls. Drops of water and dust are deposited on the plug 3 of the wall 6 of the separation chamber 5, dust, which under the action of centrifugal forces are displaced to the wall and through the discharge channel 4 enter the separation chamber 5 (the smaller the gas flow from the design mode, the more moisture is deposited on the plug 3). The swirling flow moves along the wall 6 of the separation chamber 5. Drops of water, oil, dust under the action of centrifugal forces are deposited on the wall 6, are displaced along it in the form of a film with subsequent removal through the slotted trap 7 and the annular trap 8 into the separation chamber 5.

The separation efficiency depends on the angle between the gas flow and the traps (the gas swirl angle depends on the flow velocity). Gas purifiers are calculated on a certain flow rate (speed) of gas. Normal separation occurs in the design modes, with off-design modes, the separation effect is reduced. To increase the optimal angle between the gas flow and the slots, to increase the normal operation of the gas separator when the flow velocity changes from the calculated one, the slit trap slots are performed at an angle of 45 ^o with a smooth transition to a radius with overlapping each other along the gas flow (Fig. 2). The width of the slots is 1 - 2.5 mm and the length is 10 - 50 mm (depending on the calculation of the flow rate). The size of the slots allows you to catch large particles of dust, oils. Slots are more effective than holes. The holes are usually tightened with oil and dust. Slots are less exposed to this phenomenon. Precipitated in the separation chamber 5, water, oil, dust fall into the drain hole 9 and are discharged into the atmosphere through the discharge valve 10. The purified gas through the outlet fitting 13 is supplied to consumers. At high gas flow rates (speeds), the majority of moisture, oil, and dust are removed from the design mode through the slit trap (Fig. 3).

 To reduce the pressure in the separation chamber 5 there is a recirculation tube 14, which is brought into the discharge zone and is located in front of the slot 7 and ring 8 traps. Gas from the separation chamber 5 through the recirculation tube 14 enters the discharge zone, reducing the pressure in the separation chamber 5. The droplets of water, oil, dust falling into the recirculation tube 14 are thrown onto the wall 6 of the separation chamber 5 and recaptured by traps 7 and 8, eliminating to consumers.

 Thus, the proposed device in comparison with the prototype and analogue has the advantage. The quality of cleaning has been increased, since moisture, oil, and dust have been prevented from reaching consumers by installing a recirculation tube in the swirl cavity before the slot and ring traps. Reliability is improved, since the gas purifier is prevented from exiting due to the removal of large particles of dust and oil into the separation chamber through slots (larger than openings), followed by removal through a vent valve to the atmosphere.

 The range of normal operation from the calculated one is expanded by ± 80% due to the constructive implementation of the discharge channel, slot trap, and ring trap.

 Conducted in NSTU research gas purifier (separator) type (US patent N 4238210, B 01 D 45/12, 1980). The degree of gas purification in the design modes of 85%. The proposed device has a purity of 96%.

Claims (1)

 A gas purifier comprising a housing with gas supply and exhaust pipes, a swirl, a separation chamber, a drain hole, characterized in that a recirculation pipe, a discharge channel, a discharge valve, slotted and annular traps are introduced into it, while the specified swirl is made tangential in the form of a gap and is located in the wall of the separation chamber, the recirculation tube is located in the discharge zone of the swirl, slit traps made in the form of oblique slits are located in the wall of the separation chamber, an annular trap in the form of a ring of races olozhena between the wall and the housing of the separation chamber, the trap located behind the swirler, discharge channel formed in the wall of the separation chamber from the swirler relief valve mounted on the housing of the separation chamber from the discharge channel.

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