[특허]Apparatus and method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus

GL&V Luxembourg S.å.r.l.

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Apparatus and method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01F-005/04 B01F-015/04 B01F-015/00 D21C-009/00
출원번호	US-0821979 (2011-09-09)
등록번호	US-9427716 (2016-08-30)
우선권정보	SE-1000921 (2010-09-10)
국제출원번호	PCT/SE2011/051098 (2011-09-09)
§371/§102 date	20130815 (20130815)
국제공개번호	WO2012/033461 (2012-03-15)
발명자 / 주소	Jansson, Ulf Björkström, Janos
출원인 / 주소	GL&V Luxembourg S.å.r.l.
인용정보	피인용 횟수 : 0 인용 특허 : 7

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An apparatus for mixing a first fluid into a flow path (44) of a second fluid, said apparatus having a chamber (12), which encloses the flow path and exhibits a first inlet (13) for receiving the second fluid, a second inlet (15) arranged downstream of the first inlet for receiving the first fluid, as well as an outlet arranged downstream of the second inlet for discharging a mixture of the first fluid and the second fluid, said flow path extending from the first inlet to the outlet and said second inlet opening into the flow path, a throttle body (29), which is pivotally arranged inside the chamber for controlling the flow area of the flow path, and pivoting means (50, 51) for pivoting the throttle body for said controlling of the flow area. According to the invention, the pivoting means is adapted to pivot the throttle body so that the flow area decreases with a decreasing flow rate of the second fluid and increases with an increasing flow rate of the second fluid, in order to maintain the flow velocity of the second fluid at the second inlet within a predetermined range.

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1. An apparatus for mixing a first fluid into a flow path of a second fluid, said apparatus comprising: a chamber, which encloses the flow path and exhibits a first inlet for receiving the second fluid, a second inlet arranged downstream of the first inlet for receiving the first fluid, as well as an outlet arranged downstream of the second inlet for discharging a mixture of the first fluid and the second fluid, said flow path extending from the first inlet to the outlet and said second inlet opening into the flow path, a throttle body, which is pivotally arranged inside the chamber for controlling the flow area of the flow path; and pivoting means, for pivoting the throttle body for said controlling of the flow area, the pivoting means being adapted to pivot the throttle body, so that the flow area decreases with a decreasing flow rate of the second fluid and increases with an increasing flow rate of the second fluid in order to maintain a flow velocity of the second fluid at the second inlet within a predetermined range, wherein the throttle body comprises a flap that has a first end that is pivotally arranged at the chamber and a second end that is free, the free end being directly adjacent the second inlet so that the flap maintains the flow rate of the second fluid at the second inlet in a desired range. 2. The apparatus according to claim 1, the pivoting means being adapted to continuously exert a first torque on the throttle body, which balances a second torque exerted by the second fluid on the throttle body wherein the throttle body is adapted to adjust itself around an equilibrium position, which is a function of the flow rate of the second fluid. 3. The apparatus according to claim 2, the throttle body exhibiting a surface for diverting the direction of flow of the flow path. 4. The apparatus according to claim 1, the first end being pivotally arranged, via an axle, at a base portion of the chamber. 5. The apparatus according to claim 4, wherein the apparatus comprises at least one compressively loaded lever arm arranged on the axle. 6. The apparatus according to claim 5, the pivoting means comprising a pneumatic cylinder, which is adapted to produce the compressive load on the lever arm. 7. The apparatus according to claim 1, wherein the apparatus comprises a second conduit, which connects to the outlet on the downstream side of the outlet, wherein the cross-sectional area of the second conduit is at least 50% larger than the cross-sectional area of the outlet. 8. The apparatus according to claim 1, wherein the throttle body exhibits turbulence-generating means, which are adapted to promote the formation of turbulence in the second fluid when it leaves the throttle body. 9. The apparatus according to claim 8, said turbulence-generating means having the shape of elongated, parallel grooves or recesses, which are disposed at the second end of the flap and extend in a longitudinal direction of the flap. 10. The apparatus according to claim 1, wherein the apparatus is adapted for mixing steam into a pulp suspension. 11. The apparatus according to claim 1, wherein the apparatus is adapted for mixing a process chemical into a pulp suspension. 12. The apparatus according to claim 1, wherein the chamber has a width and a top and wherein the second inlet is in the chamber top, and wherein the flap has a width substantially equal to the chamber width. 13. A method for mixing a first fluid into a flow path of a second fluid, comprising the steps of: causing the second fluid to flow in a chamber from a first inlet to an outlet, said chamber enclosing said flow path; supplying the first fluid to the flow path of the second fluid via a second inlet of the chamber, said second inlet being arranged downstream of the first net and upstream of the outlet; and causing pivoting means to pivot a throttle body, arranged in the flow path, to control the flow area of the flow path, the pivoting means being caused to pivot the throttle body, so that the flow area decreases with a decreasing flow rate of the second fluid and increases with an increasing flow rate of the second fluid in order to maintain a flow velocity of the second fluid at the second inlet within a predetermined range, wherein the throttle body comprises a flap that has a first end that is pivotally arranged at the chamber and a second end that is free, the free end being directly adjacent the second inlet so that the flap maintains the flow rate of the second fluid at the second inlet in a desired range. 14. The method according to claim 13, the pivoting means being caused to continuously exert a first torque on the throttle body, which balances a second torque exerted by the second fluid on the throttle, wherein the throttle body is caused to adjust itself around an equilibrium position, which is a function of the flow rate of the second fluid. 15. The apparatus according to claim 13, wherein the chamber has a width and a top and wherein the second inlet is in the chamber top, and wherein the flap has a width substantially equal to the chamber width.

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Apparatus and method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus

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Apparatus and method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus

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