JP2711598B2 - Cage valve - Google Patents

Cage valve

Info

Publication number
JP2711598B2
JP2711598B2 JP3110886A JP11088691A JP2711598B2 JP 2711598 B2 JP2711598 B2 JP 2711598B2 JP 3110886 A JP3110886 A JP 3110886A JP 11088691 A JP11088691 A JP 11088691A JP 2711598 B2 JP2711598 B2 JP 2711598B2
Authority
JP
Japan
Prior art keywords
valve
cage
fluid passage
peripheral
flow
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP3110886A
Other languages
Japanese (ja)
Other versions
JPH05322054A (en
Inventor
義彦 長谷川
Original Assignee
株式会社テイエルブイ
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 株式会社テイエルブイ filed Critical 株式会社テイエルブイ
Priority to JP3110886A priority Critical patent/JP2711598B2/en
Publication of JPH05322054A publication Critical patent/JPH05322054A/en
Application granted granted Critical
Publication of JP2711598B2 publication Critical patent/JP2711598B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cage valve which is a type of a control valve mainly used for the purpose of controlling and controlling the flow of various fluids in a pipeline.

[0002]

2. Description of the Related Art Conventional cage valves include, for example,
There is one disclosed in Japanese Patent Publication No. 18470. This is to arrange a cage consisting of a cylindrical peripheral wall in the valve chamber, provide a window for passing fluid on the peripheral wall, provide a lower valve seat under this window, arrange a valve plug in the cage, A lower seat corresponding to the lower valve seat is provided on the outer peripheral surface of the valve plug. The valve plug is displaced up and down by the operation or sliding operation of the drive unit by the automatic control device, and the flow area is controlled by changing the opening area of the fluid passage window.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
The flow characteristics of the valve, such as flow curves such as equal percentage and linear, and flow coefficient Cv for determining the maximum flow, could not be changed. This is because the flow characteristics of the valve are determined by the shape of the fluid passage window formed in the cage, but only one type of fluid passage window is provided.

[0004] Therefore, a technical object of the present invention is to make it possible to switch to a desired flow characteristic and use it.

[0005]

Means for Solving the Problems In order to solve the above technical problems, the technical means of the present invention is to form an inlet, a valve chamber and an outlet in a valve casing, and to form a cylindrical peripheral wall in the valve chamber .
And a desired flow rate characteristic on the peripheral wall of the cage.
And a fluid passage window for
Provide a valve seat, place a valve plug in the cage,
Cage provided with an underseat portion corresponding to the lower valve seat on the outer peripheral surface
In the valve, different flow characteristics can be obtained on the peripheral wall of the cage
Provide multiple fluid passage windows and freely rotate cage
It is placed indoors, and each flow depends on the rotation position of the cage.
The feature is that the body passage windows are sequentially connected to the exit
It is assumed that .

[0006]

The operation of the above technical means is as follows.
Since a plurality of fluid passage windows for obtaining desired flow characteristics are formed in the cage and the cage is rotatably arranged, each fluid passage window can be sequentially communicated with the outlet depending on the rotational position of the cage. The valve plug is displaced up and down by operation of a drive unit by an automatic control device or manual operation, and the flow area is controlled by changing the opening area of the fluid passage window. Therefore, valves having different flow characteristics can be obtained depending on the shape of the fluid passage window communicating with the outlet.

[0007]

An embodiment showing a specific example of the above technical means will be described (see FIG. 1). Bolt 3 with body 1 and bonnet 2
To form a valve casing. An inlet 4, a valve chamber 5 and an outlet 6 are formed in the main body 1. A cylindrical partition tube 8 having a communication port 7 to an outlet 6 is accommodated in the valve chamber 5. Gasket 9, airtightness between partition 8 and main body 1 and bonnet 2
Keep at 10. A cylindrical cage 11 is accommodated in the partition tube 8.

[0008] Two fluid passage windows 1 are provided in the peripheral wall of the cage 11.
2 and 13 are formed. Both of the fluid passage windows 12 and 13 are substantially inverted triangles whose width is larger toward the top and narrower toward the bottom, and is shaped so as to obtain an equal percentage flow rate characteristic. The flow coefficient Cv of the right fluid passage window 12 is large (indicated by the dotted line A). The flow coefficient of the fluid passage window 13 on the left side is small (indicated by a dotted line B). Airtightness between the cage 11 and the partition 8 is maintained by the gasket 14.

The rotating shaft 15 is disposed through the hood 2 and the lower end of the rotating shaft 15 and the upper end of the cage 111 are engaged with each other so that the cage 11 can be rotated. The rotating shaft 15 is urged downward by a disc spring 16, and the seal ring 17 maintains airtightness with the bonnet 2. Reference numeral 18 denotes a handle for rotating the rotating shaft 15, and 19 denotes a nut.

A lower valve seat 20 is formed below the fluid passage windows 12 and 13 of the cage 11, and an upper valve seat 21 is formed above the fluid valve. The valve plug 22 is housed in the cage 11. A lower seat portion 23 and an upper valve seat 21 which are detachably seated on the lower valve seat 20 on the outer peripheral surface of the valve plug 22.
An upper seat portion 24 is formed to be separated from and seated on the upper surface. A through hole 25 is formed in the valve plug 22 so as to penetrate vertically. An operation shaft 26 for vertically operating from outside is formed integrally with the upper portion of the valve plug 22. The airtightness between the operation shaft 26 and the rotation shaft 15 is maintained by the packing 27.

In the drawing, the fluid passage window 12 of the cage 11 having a large flow coefficient communicates with the outlet 6 through the communication port 7 of the partition tube 8, and the lower seat portion 23 and the upper seat portion 24 of the valve plug 22 are connected. The valve closed state in which the cage 11 is seated on the lower valve seat 20 and the upper valve seat 21 is shown. When the operating shaft 26 is raised from this state by the operation of the drive unit by the automatic control device or by manual operation, the valve plug 22 is raised integrally and the opening area of the fluid passage window 12 is changed. Thereby, the flow rate flowing from the inlet 4 to the outlet 6 is controlled. When the rotating shaft 15 is rotated by operating the handle 18,
The cage 11 rotates and the fluid passage window 13 having a small flow coefficient
Communicates with the outlet 6 through the communication port 7.

[0012]

The present invention has the following specific effects. As described above, according to the present invention, by forming a plurality of fluid passage windows for obtaining desired flow characteristics in the cage, the flow characteristics can be switched according to the rotational position of the cage.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of a cage valve of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 4 Inlet 5 Valve room 6 Outlet 11 Cage 12 Fluid passage window 13 Fluid passage window 15 Rotation shaft 20 Lower valve seat 22 Valve plug 23 Under seat

Claims (1)

    (57) [Claims]
  1. An inlet, a valve chamber, and an outlet are formed in a valve casing, and a cage having a cylindrical peripheral wall is disposed in the valve chamber.
    Provide a fluid passage window on the peripheral wall of the
    The lower valve seat is provided under this window, and the valve is
    A plug is arranged and corresponding to the above lower valve seat on the outer peripheral surface of the valve plug
    In a cage valve provided with a closed underseat, the peripheral wall of the cage
    Provide multiple fluid passage windows with different flow characteristics
    Together with the cage inside the valve chamber so that the cage can rotate.
    Each fluid passage window communicates with the outlet sequentially according to the shift position
    A cage valve , characterized in that the cage valve is adapted to be operated.
JP3110886A 1991-04-15 1991-04-15 Cage valve Expired - Fee Related JP2711598B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3110886A JP2711598B2 (en) 1991-04-15 1991-04-15 Cage valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3110886A JP2711598B2 (en) 1991-04-15 1991-04-15 Cage valve

Publications (2)

Publication Number Publication Date
JPH05322054A JPH05322054A (en) 1993-12-07
JP2711598B2 true JP2711598B2 (en) 1998-02-10

Family

ID=14547189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3110886A Expired - Fee Related JP2711598B2 (en) 1991-04-15 1991-04-15 Cage valve

Country Status (1)

Country Link
JP (1) JP2711598B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8087638B2 (en) * 2008-08-01 2012-01-03 Fisher Controls International, Llc Apparatus to control a fluid flow characteristic of fluid regulator bypass valves
JP2011194329A (en) * 2010-03-19 2011-10-06 Nec Corp Coating system
US9297469B2 (en) * 2013-03-14 2016-03-29 Fisher Controls International Llc Valve seat assemblies

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144867A (en) * 1983-02-07 1984-08-20 Yamatake Honeywell Co Ltd Cage valve
JPH01154371U (en) * 1988-04-15 1989-10-24

Also Published As

Publication number Publication date
JPH05322054A (en) 1993-12-07

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