WO1992008918A1 - Vanne regulatrice de debit a au moins deux voies - Google Patents

Vanne regulatrice de debit a au moins deux voies Download PDF

Info

Publication number
WO1992008918A1
WO1992008918A1 PCT/SE1991/000775 SE9100775W WO9208918A1 WO 1992008918 A1 WO1992008918 A1 WO 1992008918A1 SE 9100775 W SE9100775 W SE 9100775W WO 9208918 A1 WO9208918 A1 WO 9208918A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
spindle
designed
flow
seat
Prior art date
Application number
PCT/SE1991/000775
Other languages
English (en)
Inventor
Hans Palmertz
Viveca Mundt
Original Assignee
Tour & Andersson Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tour & Andersson Ab filed Critical Tour & Andersson Ab
Priority to DE4192834A priority Critical patent/DE4192834C2/de
Publication of WO1992008918A1 publication Critical patent/WO1992008918A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/52—Means for additional adjustment of the rate of flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
    • F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve

Definitions

  • the present invention relates to a valve of the type set forth in detail in the preamble of claim 1.
  • valve In case such a valve is mounted in a pipe line circuit with a flow of water or air, the pressure on the inlet side of the valve being higher than on the outlet side of it , a driving power of the fluid is obtained, a flow through the valve resulting.
  • the flow amount is dependent on the size of the driving force, which shows itself in the differential pressure across the valve, and the size of the opening area between the valve body and the valve seat.
  • the ratio of the maximum adjustable flow and the minimum adjustable flow for a constant differential pressure across the valve is called the adjustment area of the valve or the adjustment ratio.
  • the size of the adjustment area is a function of the ratio between the largest and the smal ⁇ lest opening area between the adjustment body and the valve seat. In a construction of the above-described type the ad ⁇ justment area, due to manufacturing technical reasons, will be limited to 100:1 - 200:1.
  • a valve having a certain capacity value is selected.
  • the decrease in pressure of the feeding is substantially higher, e.g. as high as 1000 KPa, and the feeding temperature is higher than in summer.
  • the selected valve will have a too large capacity in winter.
  • a circulation pump is used in multiple-family houses, which circulates the hot water in the pipes, when no tapping takes place, in the night ⁇ time as well as in the daytime. The hot water circulation is designed to compensate for the heat losses in the hot water system. With a view to having the valve regulate from the largest required flow down to the smallest re ⁇ quired flow the regulation area preferably will be larger than 300:1. This is not possible to achieve, according to experience, using just one valve or regulation body.
  • valves also mainly function in the de ⁇ sired way, but partly they do not produce a sufficiently exact and even fine regulation, and partly they do not have a satisfactory regulation characteristic in the transition area from a fine to a coarse regulation.
  • DE-C-152 868 and SE-B-357422 show additional known tech ⁇ nique.
  • DE-C-152 868 relates to a steam valve with double cones on a common spindle and is designed to avoid steam leakage, which in course of time tends to increase.
  • Accor ⁇ ding to Fig. 1 the cones are mounted on a common spindle.
  • the lower cone is connected to the valve spindle.
  • the upper cone is axially movable on the valve spindle. By means of a spring the upper cone is prestressed in order to obtain a satisfactory sealing of the two cones.
  • Figs. 4 and 5 show other variants of the design shown in Fig. 1.
  • the patent claims relate to a cone valve, which is self-sealing against steam.
  • the inventive concept is that the steam will enter the cavity between the two cones, in which cavity the steam will be transformed from the steam phase to the liquid phase. When the cavity has been filled with a condensate, a satisfactory steam sea ⁇ ling has been obtained.
  • This construction is designed to achieve a leakproof valve and not a construction, designed to allow a regulation of the valve.
  • SE-B-357 422 relates to a steam regulation valve having two coaxially disposed valve cones, each one being cont ⁇ rolled by its regulation element, which regulation ele ⁇ ments are operated individually.
  • the advantage of such a valve is supposed to be that two valves are mounted in one valve body, which is advantageous if there is a lack of space. Also, this valve construction is supposed to allow a simpler pipe connection than when two valves are used.
  • the object of this invention is not enhance the cont ⁇ rollability of a valve by means of the two coaxially dis ⁇ posed cones.
  • the object of the present invention is to, as regards the above-mentioned considerations, improve the already known valves and also in additional respects to develop the state of the art in this field, through a construction, which is more expedient as regards e.g. its manufacturing and/or mounting and/or its maintenance and life as well as ex ⁇ traditionss.
  • Fig. 1 a valve according to the invention in its comple ⁇ tely closed position in a mainly diametrical section
  • Fig. 2 a and b an enlarged partial view of the valve ac ⁇ cording to Fig. 1 with a partially open fine regulation and an at least partially open coarse regulation
  • Fig. 3 a modified valve design according to the invention in a view corresponding to a portion of Fig. 1 and in a sec ⁇ tional view along line A-A in the same figure respectively, and with a flow diagram respectively;
  • Fig. 4 an additional modified valve design according to the invention in a view corresponding to Fig. 3, and a matching flow diagram;
  • Fig. 5 a valve design according to a portion of Fig. 1, the small valve being at a maximum and the large valve still being closed, and the matching diagram; and Fig. 6 a diagram showing the ratio between the stroke and the opening area of a small valve according to Figs. 1, 2 and 5.
  • valve according to the present invention is suited for use in two-way as well as multiple-way constructions. Also, several valves according to the invention can be connected in series, the valve bodies being opened and closed respec ⁇ tively in the same direction or in the opposite direction, i.e. the valve bodies being oriented in the same direction or with a mirror-symmetrical orientation.
  • a manual, electromagnetic, electrohydraulic, pneu ⁇ matic or magnetic adjusting element 1 is shown, which is attached to a valve shoulder 2, which in its turn, bymeans of threaded bolts 3 and nuts 4 is attached to a valve body 5, the two portions of the shoulder and the body respec ⁇ tively facing each other and being designed as flanges 6 and 7 respectively with an intermediate seal 8.
  • Adjusting element 1 comprises a spindle 9, which extends along the center line of valve body 5 and which within the valve shoulder is surrounded by a packing box 10, which is locked by a safety ring 11, inserted in a groove 12 in a central bore 13 in the shoulder.
  • Valve body 5 is in the shown embodiment a two-way construc ⁇ tion having an inlet 14 and an outlet 15, which are sepa ⁇ rated by a partition wall 16, in the central part of which in an opening 17 a sleeve 18 is inserted, which forms a valv seat 19 at its end which faces the outlet.
  • This seat is de ⁇ signed to allow large flows and consequently also a coarse regulation.
  • Sleeve 18 suitably has a reduced diameter with ⁇ in the seat area, e.g.
  • the free end of spindle 9 extends all the way into the cent ⁇ ral part of sleeve 18 and supports within the area of seat 19 a valve body 22, which can also be called a coarse re ⁇ gulation body.
  • the latter bears at the outlet area on seat 19 with a flange 23 and is provided inside the flange with a cone 24, the sides of which are parabola-shaped in an ax ⁇ ial section, whereas its free end is designed as a radial end surface 25.
  • the diameter of the cone is at the shoulder or at the surface of flange 23, which faces the cone, rough ⁇ ly the same as the inner diameter of passage 26, which ex ⁇ tends through body 18.
  • the parabola-shaped or possibly straight conical outer surface of the cone is designed/di ⁇ mensioned according to the desired regulation characteris ⁇ tic.
  • Regulation body 22 is axially displaceably mounted on spindle 9 and is for this purpose provided with a central axial through bore 27 having roughly the same inner diame ⁇ ter as the outer diameter of the spindle.
  • the spindle pro ⁇ jects with its free end out of this bore and is outside body 22 provided with a stop 28, which is designed to act on and lift the regulation body, when the spindle is re ⁇ tracted/lifted (see Fig. 2b) but allow a spindle movement downwards beyond the closing position for regulation body 22 (see Figs . 1 and 2a) .
  • a helicoidal compressive spring 29 is mounted, which with its one end concentricly surrounds the spindle, whereas the other end of the spring is pressed against a stopping disc 30, which is fastened to the spindle by fastening means 31 and 32, which are inserted in grooves 33 and 34 respectively in the spindle in the direction of packing box 10.
  • Spring 29 is designed to push regulation body 22 into a sealing contact against seat 19.
  • a transverse displacementdisc 30 and flange 23 can be provided with annular recesses 35 and 36 respectively in their opposite surfaces.
  • the free end of spindle 9 is designed as a valve body 37, which also can be called a fine regulation body.
  • the spindle is for this purpose designed with prefe ⁇ rably one recess, in its entirety designated 38, which mainly is located inside bore 27. Recess 38 may be divi ⁇ ded into several different sections. In the area of flange
  • the recess suitably is designed as a cut parabola-shaped surface 39, which extends towards the free end of the spindle, oblique ⁇ ly and inwardly and to which an axial surface 40 is connec ⁇ ted, which according to Figs. 1, 2 and 5 is connected to a cylinder surface 41, having a reduced diameter, up to the free end surface of the spindle, an annual gap 42 being formed jointly with the lower part of bore 27 in the area of this cylinder surface, said gap being open downwards.
  • axial surface 40 extends all the way to the free end of the spindle.
  • the seat for this small valve is the upper end or the end close to the outlet of bore 27, with which the spindle can interfere somewhat with a not reduced diameter or in which there is a cylinder- shaped recess 43 in the end surface of coarse regulation body 22, connected to the outlet, against bottom 44 of which recess is pressed a substantially cylinder-shaped sealing body 45, which encases the spindle, end surface 47 of which, which is reduced by a bevel surface 46 around the spindle, sealingly is pressed against said bottom.
  • the parabola-top of surface 39 can also be loca ⁇ ted within roughly the same plane as bottom 44 and end surface 47, when the small valve is fully closed.
  • Surf c- ces 44 and 47 suitably are finely ground in order to im ⁇ prove the efficiency of the additional sealing surface, which is produced in this way.
  • Sealing body 47 is retained by an upper stop ring 48 and is sealed against the spindel by an 0-ring 50, which is inserted inside the body in an annular groove 49 in the spindle.
  • mutually opposite sur ⁇ faces 19, 23 and 24 are also finely ground.
  • Such a valve works in the following way: According to Fig. 1 the two valve bodies 22 and 37 (45) are pressed against their respective seats and no flow occurs between the inlet and the outlet. According to Fig. 2a spindle 9 has been lifted slightly and via seat 51 of the small valve and point to sector-shaped opening 52, lo ⁇ cated inside said seat, a fluid can flow from the inlet to the outlet.
  • the opening area of the small valve is shown in Fig. 6.
  • the flow is shown in Figs.3-5.
  • the diagram shows the substantial evenness of the opening area along the entire stroke of e.g. 4 mm of valve body 9, 37, the area of opening 52 increasing continuously from 0 to e.g. 4 mm 2.
  • stop 28 bears on end surface 25 of body 22 and lifts, when the valve spindle movement continues, the coarse re- gulation body from its seat and uncovers a coarse regula ⁇ tion opening 53, which continuously grows. See Fig. 2b and the right-hand side of the diagram in Fig. 5. However, it must be interposed in this connection , that the central part of said diagram, which part forms an even and imper- cetible transition between the small and the large valve or between the fine and the coarse regulation, is the re ⁇ sult of an additional important feature of the invention, which feature is illustrated as an embodiment in the upper part of Fig. 5, showing from below the central part.
  • stop 28 is designed as a restriction element, which covers three quarters of gap 42 in the contact posi ⁇ tion.
  • the restriction element is an open flat ring and con ⁇ sequently it is C-shaped and is retained by e.g. lugs 54, pressed from spindle 9. Since gap 42 extends around the en ⁇ tire spindle, the location of opening 55 of restriction element 28 is not critical, i.e. this element can be rota ⁇ ted to another position than the one shown in Fig. 5 with ⁇ out influencing the diagram according to Fig. 5.
  • the cross- sectional area of gap 42 is in a practical embodiment about
  • the angle of surface 39 in relation to the longitudinal axis of the spindle can be as high as 5-45 , preferably about 14 .
  • this surface can also be positioned at a distance from or be slightly covered by this body, depending on the desired flow characteristic.
  • surface 39 can have another shape than being flat or parabola-shaped.
  • a convex and/or concave design in the circumferential direction of the spindle and/or in its axial direction is possible.
  • the second and/or the third valve can be a separate part, which is attached to the spindle, if it is desirable to avoid a machining of the spindle and to take advantage of other materials having other properties, e.g. plastic materials, respectively.
  • stop/rest ⁇ riction element 28 is important for the flow pattern.
  • element 28 is designed as a pin, which is positioned right through the spindle and does not have any substantial restriction properties.
  • the flow pattern in Fig. 3 indi ⁇ cates clearly a substantial temporary flow increase and a following flow decrease during the transition from the small to the large valve or more particularly during the final phase of the fine regulation and the intial phase of the coarse regulation.
  • stop element 28 is designed as a closed disc, which, when the small valve is opened up at a maximum, comp ⁇ letely shuts off the flow to it.
  • a "dip" is ob ⁇ tained in the opposite direction as compared to the bulge shown in Fig. 3.
  • the two flow characteristics are of course equally objectionable during normal operations and of course difficult to overcome as regards the control aspects.
  • openings in the disc can be used in order to coun ⁇ teract the inferior flow characteristics.
  • the openings can be designed in an arbitrary way and be located in arbitrary places in the disc and/or in the lower part of body 22.
  • the stroke of the course regulation body in the described practical embodi ⁇ ment suitably is about 18 mm.
  • the stroke of the fine regu ⁇ lation body suitably is 2-10 mm, preferably about 4 mm.
  • the diameter of bore 27 suitably is 10 mm, whereas the dia ⁇ meter of cylinder 41 may be as high as 8.8 mm, according to a practical and not limiting embodiment. Consequently, gap width 42 suitably is 0.6 mm.
  • the overlapping, which exists between bore 27 and cylinder surface 41, can be as high as e.g. 2 mm, when the small valve is completely open, and e.g. 20 mm, when the small valve is completely closed.
  • the overlapping area generally will be mul ⁇ tiplied during the closing movement of the small valve.
  • the term "choking" includes a friction or turbulence increase effect, e.g. due to an in ⁇ crease in the contact surface between the passages and the flowing liquid.
  • Fine regulation opening 52 is of course comparatively compact and consequently has a small friction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

Vanne régulatrice de débit à au moins deux voies munie d'une tige (9) montée dans une boîte (5), et d'un premier corps (22) monté sur ladite boîte et destiné à réguler des débits importants en association avec un siège (19) fixé à la boîte entre un orifice d'entrée (14) et un orifice de sortie (15). Ledit coprs (22) forme un siège (51) pour un second corps (37) apte à réguler des débits peu importants. Ce second corps est formé par l'extrémité libre de la tige à l'endroit où elle s'engage dans un perçage (27) traversant le premier corps, tandis que l'extrémité de la tige située de l'autre côté dudit corps porte un élément de butée (28) conçu pour soulever le premier corps de son siège (19) lorsque la tige se retire/remonte, afin de permettre à la tige de se déplacer au-delà de la position de fermeture de ce corps, et d'étrangler l'écoulement dans la seconde vanne dans la phase finale de son ouverture.
PCT/SE1991/000775 1990-11-19 1991-11-15 Vanne regulatrice de debit a au moins deux voies WO1992008918A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4192834A DE4192834C2 (de) 1990-11-19 1991-11-15 Ventil zur Zwei- oder Mehrwegeströmungsregulierung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9003674A SE467223B (sv) 1990-11-19 1990-11-19 Ventil foer tvaa- eller flervaegs floedesreglering
SE9003674-0 1990-11-19

Publications (1)

Publication Number Publication Date
WO1992008918A1 true WO1992008918A1 (fr) 1992-05-29

Family

ID=20380943

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1991/000775 WO1992008918A1 (fr) 1990-11-19 1991-11-15 Vanne regulatrice de debit a au moins deux voies

Country Status (4)

Country Link
AU (1) AU8927091A (fr)
DE (2) DE4192834C2 (fr)
SE (1) SE467223B (fr)
WO (1) WO1992008918A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0713036A1 (fr) * 1994-11-17 1996-05-22 Sagem Sa Clapet d'électrovanne et circuit de recyclage de vapeurs d'essence de moteur à combustion interne
FR2727734A1 (fr) * 1994-12-06 1996-06-07 Control Valves Sarl Vannes de reglage a double debit
EP2256072A1 (fr) * 2002-05-17 2010-12-01 PepsiCo, Inc. Système de distribution et de formation de boisson
CN110630757A (zh) * 2018-06-22 2019-12-31 Smc株式会社 真空阀
CN110630758A (zh) * 2019-10-23 2019-12-31 西安庆安航空试验设备有限责任公司 一种粗细调针形开关

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006036294A1 (de) * 2006-08-03 2008-02-07 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Gasventil und Verfahren zur Ansteuerung eines Gasventils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE152868C (fr) *
SE357422B (fr) * 1969-01-28 1973-06-25 Sulzer Ag
SE456689B (sv) * 1987-03-05 1988-10-24 Tour & Andersson Ab Trevaegsventil med kombinerat system foer reglering och hydraulisk inbalansering

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2251833C3 (de) * 1972-10-21 1980-06-19 Vereinigte Baubeschlagfabriken Gretsch & Co Gmbh, 7250 Leonberg Absatzhaltevorrichtung fur Sicherheitsskibindungen
US3971413A (en) * 1975-03-04 1976-07-27 American Air Filter Company, Inc. Damper arrangement
DE2831733A1 (de) * 1978-06-26 1980-01-03 Landis & Gyr Ag Zweistufen-gasventil
GB2208421B (en) * 1987-07-30 1991-09-04 Kent Process Control Ltd Flow control valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE152868C (fr) *
SE357422B (fr) * 1969-01-28 1973-06-25 Sulzer Ag
SE456689B (sv) * 1987-03-05 1988-10-24 Tour & Andersson Ab Trevaegsventil med kombinerat system foer reglering och hydraulisk inbalansering

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0713036A1 (fr) * 1994-11-17 1996-05-22 Sagem Sa Clapet d'électrovanne et circuit de recyclage de vapeurs d'essence de moteur à combustion interne
FR2727185A1 (fr) * 1994-11-17 1996-05-24 Sagem Allumage Clapet d'electrovanne et circuit de recyclage de vapeurs d'essence de moteur a combustion interne
US5657962A (en) * 1994-11-17 1997-08-19 Sagem Sa Solenoid valve closure part and recycling circuit for the petrol vapours of internal combustion engines
FR2727734A1 (fr) * 1994-12-06 1996-06-07 Control Valves Sarl Vannes de reglage a double debit
EP2256072A1 (fr) * 2002-05-17 2010-12-01 PepsiCo, Inc. Système de distribution et de formation de boisson
CN110630757A (zh) * 2018-06-22 2019-12-31 Smc株式会社 真空阀
EP3587881A1 (fr) * 2018-06-22 2020-01-01 SMC Corporation Soupape à vide
US10895331B2 (en) 2018-06-22 2021-01-19 Smc Corporation Vacuum valve
CN110630757B (zh) * 2018-06-22 2023-02-28 Smc株式会社 真空阀
CN110630758A (zh) * 2019-10-23 2019-12-31 西安庆安航空试验设备有限责任公司 一种粗细调针形开关

Also Published As

Publication number Publication date
SE467223B (sv) 1992-06-15
DE4192834C2 (de) 1996-02-01
SE9003674D0 (sv) 1990-11-19
DE4192834T1 (de) 1993-10-07
AU8927091A (en) 1992-06-11
SE9003674A (fr) 1992-05-20

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