JP2010104906A - Water separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water separator settable in a space limited in the inside height dimension, suppressing splash of water droplets downstream caused by turbulence of a swirling flow of gas and increasing the water removing efficiency, while suppressing the flow resistance and pressure loss of the gas small. <P>SOLUTION: The water separator 1 removing moisture in gas is provided with an inlet pipe 2 laterally extended and introducing gas containing moisture; a swirl vane 3 generating the swirl flow in the inlet pipe; a straight part laterally set in the downstream of the swirl vane; a cylindrical trap part 4 laterally extended and communicated with the inlet pipe downstream; return parts 14, 18 provided by extending the inlet pipe into the trap part; and an outlet pipe 5 laterally extended from the downstream end of the trap part. The inner diameters D2, D3 of the trap part are set larger than the inner diameter D1 of the inlet pipe. Dripping regions 13, 17 having dripping holes 13a, 17a communicated with the outside are provided at part of the outer wall of the trap part 4, with D1≤the outlet pipe inner diameter D4<D2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water separator used in equipment such as an air conditioner for aircraft.

Conventionally, in a nuclear power plant or the like, it is widely known to provide a water separator in a pipe in order to separate water droplets from a gas flow. As such a water separator, a configuration in which a gas flow is made to flow from the lower side to the upper side, a swirl flow is generated, and moisture is discharged to the outside (for example, patent document). 1 and 2). In the configurations described in Patent Documents 1 and 2, a gap is provided between the inlet pipe and the outlet pipe. And in the structure of the said patent document 1, a restriction | limiting is provided in the downstream end of a clearance gap, and the site | part with a little water content near an axial center is led preferentially to an exit pipe | tube. Further, Patent Document 2 also describes a configuration in which a draining hole formed using a punching hole or a slit is provided over the entire circumference at a portion between the inlet pipe and the outlet pipe. The moisture contained in the gas flow is subjected to centrifugal force, guided from the gap or drainage hole to the outside of the inlet pipe and the outlet pipe, falls by gravity, and passes through an outer cylinder or the like provided outside the inlet pipe. It is discharged outside the water separator.
Japanese Unexamined Patent Publication No. 62-35291 JP-A-9-122536

  By the way, in a water separator provided in a pipe provided in a place where it is difficult to take a large space in the vertical direction such as an air conditioner for an aircraft, if the water separator as described above is used as it is in a horizontal direction, It is difficult to use the drop of water droplets due to gravity to separate the discharged water droplets. That is, the water droplet once guided to the outside of the inlet pipe and the outlet pipe by the centrifugal force may fall due to gravity and may enter into the outlet pipe from the gap between the inlet pipe and the outlet pipe. In addition, the following problems may occur. That is, in the configuration described in Patent Document 1, since there is a restriction in the pipe, the flow resistance and pressure loss of the gas flow are large, which may be inappropriate for placement in the pipe of the air conditioner. Further, when the drain hole is arranged over the entire circumference as in the configuration described in Patent Document 2, the gas flow is disturbed in the vicinity of the drain hole, and the water flow is caused near the axis of the pipe line by the disturbance of the gas flow. There is also a problem that the water droplets move and the water droplets are guided downstream.

  The present invention aims to solve such problems.

  A water separator according to the present invention is a water separator that removes moisture contained in a gas flow path, and in order to solve the above problems, an inlet formed by introducing a gas containing moisture that extends laterally. A tube, a swirling flow generating element for generating a swirling flow in the inlet pipe, a straight pipe portion provided laterally downstream of the swirling flow generating element, and a tubular shape extending laterally and communicating with the downstream side of the inlet pipe And a trap having a draining area having a draining hole communicating with the outside and having a larger inner diameter than the inlet pipe, and a return provided by extending the inlet pipe inside the trap. And an outlet pipe extending laterally from the downstream end of the trap and having an inner diameter greater than or equal to the inlet pipe and less than the trap.

  In such a case, the inner diameter of the outlet pipe is equal to or larger than that of the inlet pipe, and the inner diameter of the trap is larger than the inner diameters of the inlet pipe and the outlet pipe. There is no portion smaller than the inner diameter of the inlet pipe, so that the gas flow in the water separator can be made smooth, and the flow resistance and pressure loss can be kept small. In addition, since the draining region of the trap is formed only in a part of the outer wall, the disturbance of the swirling flow caused by the presence of the draining hole in the draining region can be reduced, and the water droplets are downstream due to the disturbance of the swirling flow. Scattering to the side can be suppressed. Furthermore, since the return portion is provided, it is possible to suppress water droplets from being scattered downstream when being introduced into the trap from the inlet pipe. Since the inlet pipe, the trap, and the outlet pipe are all extended sideways, no high-level action is required when installing such a water separator, and the inner height is limited. Can be installed in a space.

  In such a water separator, in order to further improve the moisture removal efficiency, it is desirable to provide a plurality of the traps in series. Here, when a plurality of the traps are provided in series, “the outlet pipe extends laterally from the downstream end of the trap” means that the trap located on the most downstream side among the plurality of traps provided in series. It shows extending an exit pipe sideways from the downstream end.

  In order to further improve the moisture removal efficiency, it is desirable to provide the draining region at the lower end of the trap. This is because water droplets can be discharged from the drain hole using not only centrifugal force but also gravity.

  According to the configuration of the water separator according to the present invention, since it has a configuration for connecting the inlet pipe, the trap, and the outlet pipe, both of which are extended in the lateral direction, it does not require a high-altitude action during installation. It can be installed in a space where the inner height is limited. In addition, since there is no portion whose inner diameter is smaller than that of the inlet pipe, the flow resistance and pressure loss of the gas passing through the water separator can be suppressed to be small. In addition, since the draining region of the trap is formed only on a part of the outer wall, the turbulence of the swirling flow of the gas inside is suppressed, the water droplets are prevented from scattering downstream, and the water removal efficiency Can be improved. And by extending the said inlet pipe inside the said trap and providing the return part, when a water droplet is guide | induced into a trap from an inlet pipe, it suppresses scattering to the downstream of a water droplet, and water removal efficiency is improved. Improvements can be made.

  Hereinafter, an embodiment of the present invention will be described.

  The water separator 1 according to the present embodiment is mainly used in an air flow path of an air conditioner for an aircraft, and moisture contained in engine bleed or engine bleed is cooled by a heat exchanger or the like and condensed in the bleed. Used to remove moisture.

  As shown in FIGS. 1 and 2, the water separator 1 includes an inlet pipe 2 formed by introducing a gas containing water that is stretched sideways and a swirling flow for generating a swirling flow in the inlet pipe 2. A punching hole that is a draining hole that communicates with the swirl vane 3 that is a generating element, has a cylindrical shape that extends laterally and communicates with the downstream side of the inlet pipe 2 and has an inner diameter D2 that is larger than the inner diameter D1 of the inlet pipe 2 Trap part 4 having first and second traps 8 and 9 having draining regions 13 and 17 having 13a and 17a as a part of the outer wall, and an inner diameter extending laterally from the downstream end of the trap part 4 D4 is provided with an outlet pipe 5 which is not less than the inner diameter D1 of the inlet pipe 2 and smaller than the inner diameter D2 of the trap section 4.

  The inlet pipe 2 is a round pipe-like member connected to a pipe on the upstream side of the water separator 1. Further, the inlet pipe 2 has the same inner diameter D1 over the entire longitudinal direction.

  The swirl vane 3 is provided in the inlet pipe 2 and has a core 6 located in the vicinity of the axial center of the inlet pipe 2 and an outer side while changing the phase when viewed axially from the core 6 toward the downstream side. And a plurality of fins 7 extending in the direction. The air flow in the inlet pipe 2 passes between the fins 7 of the swirl vane 3 so that the air flow in the inlet pipe 2 becomes a swirling flow. Further, the downstream edge of the fin 7 of the swirl vane 3 is upstream from the downstream edge of the inlet pipe 2 by a predetermined distance, specifically 1 to 1.5 times the diameter D1 of the inlet pipe 2. It is desirable to provide a straight pipe part in the inlet pipe 2 so as to be arranged at a position on the side. In this embodiment, the length of the straight pipe part is set to 1.3 times the inner diameter D1 of the inlet pipe 2. Yes.

  In the present embodiment, the trap section 4 is provided with a first trap 8 located on the upstream side and a second trap 9 located on the downstream side in series.

  The first trap 8 includes an upstream end wall 10 that forms an upstream edge, a partition wall 11 that forms a downstream edge, and an interval between the upstream end wall 10 and the outer edges of the partition wall 11. It is the member which makes | forms the cylindrical shape provided with the surrounding wall 12 which connects. The inner diameter D2 of the first trap 8 is preferably in the range of 1.35 times to 1.65 times the inner diameter D1 of the inlet pipe 2. In this embodiment, the inner diameter D2 is 1.5 times the inner diameter D1 of the inlet pipe 2. It is set. Further, as described above, the draining region 13 having the punching hole 13a serving as the draining hole is provided at the lower end portion of the first trap 8. In this embodiment, the draining region 13 is formed only in a range of a predetermined angle θ sandwiching the lower end. Further, a first return portion 14 provided by extending the inlet pipe 2 is formed inside the first trap 8.

  The second trap 9 includes a partition wall 11 that forms an upstream end edge, a downstream end wall 15 that forms a downstream end edge, and an outer edge between the partition wall 11 and the downstream end wall 15. It is the member which makes | forms the cylindrical shape provided with the surrounding wall 16 which connects. The partition wall 11 also serves as the partition wall 11 constituting the first trap 8. Further, the peripheral wall 16 is provided so as to be integrally extended from the downstream side edge of the peripheral wall 12 constituting the first trap 8 while maintaining the same inner diameter. That is, the inner diameter D3 of the second trap 9 is also preferably in the range of 1.35 times to 1.65 times the inner diameter D1 of the inlet pipe 2. In this embodiment, the inner diameter D3 of the inlet pipe 2 is 1.5. It is set to double. Further, as described above, the draining region 17 having the punching hole 17a which is a draining hole is also provided at the lower end portion of the second trap 9. In this embodiment, the draining region 17 is also formed only in a range of a predetermined angle θ sandwiching the lower end. Further, a second return portion 18 provided by extending the inlet pipe 2 is formed inside the second trap 9. The second return portion 18 starts from the upstream surface of the partition wall 11 and has the same inner diameter D1 and longitudinal dimension as the first return portion 14.

  Then, outside the draining regions 13 and 17 of the first and second traps 8 and 9, the water discharged to the outside of the first and second traps 8 and 9 is outside the water separator 1. A drainage 19 and a drainage channel 20 are provided for discharging to the direction.

  The outlet pipe 5 is a round pipe-like member that is connected to a pipe on the downstream side of the water separator 1. In the present embodiment, the inner diameter of the outlet pipe 5 is set to be the same as the inner diameter D1 of the inlet pipe 2. Further, the outlet pipe 2 has the same inner diameter D4 over the entire longitudinal direction. The outlet pipe 5 extends laterally from the downstream end of the trap portion 4, more specifically from the downstream end wall 15 of the trap portion 4.

  When water containing moisture is introduced into such a water separator 1, first, the air flow passes between the fins 7 of the swirl vanes 3 to form a spiral swirl flow. At that time, water droplets contained in the air flow downstream while adhering to the inner wall of the inlet pipe 2 by centrifugal force.

  Then, the air flow is introduced into the first trap 8 in the swirl state. At that time, the water droplets flowing while adhering to the inner wall of the inlet pipe 2 reach the peripheral wall 12 by receiving a centrifugal force. Then, while advancing to the downstream side spirally along the peripheral wall 12, when reaching the punching hole 13 a of the draining region 13, it is guided to the ridge 19 and discharged to the outside through the drainage channel 20. In addition, since the flow which once goes upstream along the outer wall of the 1st return part 14 arises, when the water droplet which was flowing while adhering to the inner wall of the inlet pipe 2 receives a centrifugal force and reaches the surrounding wall 12, it is downstream. Can be prevented from splashing to the side.

  The air flow that has passed through the first trap 8 then passes through the second return portion 18 and is introduced into the second trap 9. At that time, water droplets that have jumped over the first trap 8 are subjected to centrifugal force and reach the peripheral wall 16. Then, while advancing to the downstream side spirally along the peripheral wall 16, when reaching the punching hole 17 a of the draining region 17, it is guided to the ridge 19 and discharged to the outside through the drainage channel 20. In addition, since the flow which once goes upstream along the outer wall of the 2nd return part 18 arises, when the water droplet which jumped over the 1st trap 8 receives a centrifugal force and reaches the surrounding wall 16, it will scatter downstream. Can be prevented.

  As described above, according to the configuration of the water separator 1 according to the present embodiment, the inner diameter D4 of the outlet pipe 5 is equal to the inner diameter D1 of the inlet pipe 2, and the first and second traps. Since the inner diameters D2 and D3 of 8, 9 are larger than the inner diameters D1 and D4 of the inlet pipe 2 and the outlet pipe 5, specifically 1.5 times, the inner diameter is smaller than the inlet pipe 2. Therefore, the flow resistance and pressure loss of the air passing through the water separator 1 can be kept small.

  Further, the position where the downstream edge of the fin 7 of the swirl vane 3 is upstream from the downstream edge of the inlet pipe 2 by 1 to 1.5 times the diameter D1 of the inlet pipe 2, more specifically, Since the straight pipe portion is provided so as to be upstream by 1.3 times, the downstream edge of the fin 7 of the swirl vane 3 is moved from the downstream edge of the inlet pipe 2 to the diameter D1 of the inlet pipe 2. Inconvenience that may occur when set to less than 1 time, that is, in the first and second traps 8 and 9, since the swirl flow is not spread in the outer peripheral direction when viewed from the axial direction, water droplets are first and second traps. 8 and 9, while suppressing the occurrence of a problem that does not flow into the fins 7, the downstream edge of the fin 7 of the swirl vane 3 is 1.5 times the diameter D1 of the inlet pipe 2 from the downstream edge of the inlet pipe 2. Possible malfunctions when set to over, i.e. swirling flow weakens The water droplets are efficiently attached to the trap portion 4, that is, the peripheral walls 12 and 16 of the first and second trap portions 8 and 9, while suppressing the occurrence of a problem that the water droplets do not flow into the first and second trap portions 8 and 9. Can be removed.

  Further, the inner diameters D2 and D3 of the first and second traps 8 and 9 are set in a range of 1.35 to 1.65 times the inner diameter D1 of the inlet pipe 2, more specifically, 1.5 times. Therefore, a malfunction that may occur when the inner diameters D2 and D3 of the first and second traps 8 and 9 are set to be less than 1.35 times the inner diameter D1 of the inlet pipe 2, that is, water drops when the amount of water is large. While suppressing the occurrence of problems that jump over the step between the inner diameter D3 of the second trap 9 and the outlet pipe 5, the inner diameters D2, D3 of the first and second traps 8, 9 are set to the inner diameter of the inlet pipe 2. Inconvenience that may occur when D1 is set to be more than 1.65 times, that is, the swirl flow along the peripheral walls 12 and 16 of the first and second traps 8 and 9 is weakened, and water droplets on the upper portions of the peripheral walls 12 and 16 are discharged to the outlet pipe 5. Efficient trapping of water droplets while suppressing the occurrence of problems 4 or first, to adhere to the peripheral wall 12, 16 of the second trap portion 8,9 can be removed.

  In addition, since the draining regions 13 and 17 are formed only at the lower ends of the peripheral walls 12 and 16, the disturbance of the swirling flow caused by the presence of the punching holes 13a and 17a in the draining regions 13 and 17 is reduced. It is possible to suppress the water droplets from being scattered downstream due to the disturbance of the swirling flow.

  Further, since the first and second return portions 14 and 18 are provided in the first and second traps 8 and 9, they are once upstream along the outer walls of the first and second return portions 14 and 18. Therefore, when the water droplet flowing into the trap portion 4 from the inlet pipe 2 receives the centrifugal force and reaches the peripheral walls 12 and 16, it can be prevented from scattering to the downstream side.

  Moreover, since all of the inlet pipe 2, the trap part 4, and the outlet pipe 5 are extended sideways, no high-level action is required when installing such a water separator 1, and the inner height is high. It can be installed without difficulty in the space in the aircraft where the size is limited.

  In addition, since the inlet pipe 2 has the same inner diameter D1 over the entire length direction, there is a problem that may occur when a ridge or a tapered portion is provided on the downstream edge of the inlet pipe 2, that is, the ridge surface or the tapered surface. Generation | occurrence | production of the malfunction which a water | moisture content stays and a part of the staying water | moisture content scatters downstream can be prevented.

  Further, since the outlet pipe 5 is not extended upstream from the downstream end wall 15 of the trap part 4, that is, the downstream end wall 15 of the second trap, a return part is provided on the downstream side of the trap part 4. Therefore, a malfunction that may occur when a return portion is provided on the downstream side, that is, when the swirling flow of gas reaches this return portion, the return portion disturbs the swirl flow, and the disturbance of the swirl flow causes water droplets to flow out of the outlet pipe. It is possible to suppress the occurrence of a problem that the air is scattered inside 5 and led to the downstream side as it is.

  Furthermore, in this embodiment, since the trap part 4 has the 1st and 2nd traps 8 and 9 provided in series, the water | moisture-content removal efficiency can be improved further.

  Since the water draining regions 13 and 17 are provided only at the lower end of the trap portion 4, water droplets can be discharged from the punching holes 13a and 17a using not only centrifugal force but also gravity, and moisture is removed from this point as well. The efficiency can be further improved.

  The present invention is not limited to the embodiment described above.

  For example, only one trap may be provided, or three or more traps may be provided.

  Further, the draining hole does not need to be a punching hole, and may be a slit extending in a longitudinal direction of the trap or a direction perpendicular to the longitudinal direction, for example. In the embodiment described above, the draining region is provided at the lower end of the trap so that water droplets can be discharged using gravity. However, the centrifugal force and gravity due to the swirling flow in the trap balances the water. You may provide in the diagonal position which is easy to accumulate. Further, when used in a weightless space, it may be provided in a region other than the lower end as long as it is provided only in a region within a predetermined angle range of the peripheral wall of the trap. Furthermore, it is not always necessary to provide a ridge outside the draining region.

  In addition, the droplet separator having such a configuration may be provided in the piping of various gas supply devices, not limited to the air flow path of the aircraft air conditioner.

  Furthermore, instead of using swirl vanes as the swirl flow generating element, a gas introduction pipe for introducing a gas containing moisture in the tangential direction of the inlet pipe may be used.

  In the embodiment, the downstream edge of the fin 7 of the swirl vane 3 is upstream from the downstream edge of the inlet pipe 2 by 1 to 1.5 times the diameter D1 of the inlet pipe 2. Position, more specifically, a straight pipe part is set so as to be set at a position 1.3 times larger, but depending on conditions such as the diameter of the water separator 1, the air flow rate, the air pressure, the amount of water, the shape of the fin 7, etc. The appropriate range of straight pipe lengths may vary.

  In the above embodiment, the inner diameters D2 and D3 of the first and second traps 8 and 9 are in the range of 1.35 to 1.65 times the inner diameter D1 of the inlet pipe 2, more specifically 1.5. The appropriate range of the inner diameters D2 and D3 of the first and second traps 8 and 9 depends on conditions such as the diameter of the water separator 1, the air flow rate, the air pressure, the amount of water, the shape of the fin 7, etc. May be different.

  In addition, various changes may be made without departing from the spirit of the present invention.

The center longitudinal cross-sectional view of the water separator which concerns on one Embodiment of this invention. AA sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Water separator 2 ... Inlet pipe 3 ... Swirl vane (swirl flow generation element)
DESCRIPTION OF SYMBOLS 4 ... Trap 5 ... Outlet pipe 8, 9 ... 1st, 2nd trap part 13, 17 ... Draining area | region 13a, 17a ... Punching hole (draining hole)
14, 18 ... first and second return parts D1 ... inner diameter of inlet pipe D2, D3 ... inner diameters of first and second trap parts (inner diameter of trap)
D4 ... Inner diameter of outlet pipe

Claims (3)

A water separator for removing moisture contained in a gas flow path, an inlet pipe formed by introducing a gas containing moisture that extends laterally and a swirling flow generating element for generating a swirling flow in the inlet pipe A straight pipe portion provided laterally downstream of the swirling flow generating element, and a drain hole extending laterally and communicating with the downstream side of the inlet pipe and having a larger inner diameter than the inlet pipe and communicating with the outside A trap formed by setting a draining region having a part of the outer wall, a return portion provided by extending the inlet pipe inside the trap, and an inner diameter extending laterally from the downstream end of the trap. A water separator comprising the above and an outlet pipe that is less than the trap. The water separator according to claim 1, wherein a plurality of the traps are provided in series. The water separator according to claim 1 or 2, wherein the draining region is provided at a lower end portion of the trap.

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