JP2537328Y2 - High temperature valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high temperature valve suitable for use in fluid control of a regeneration tower in coal gasification technology.

[0002]

2. Description of the Related Art Conventionally, as a valve for ultra-high temperature used for controlling a slurry-containing gas at a maximum of 800 ° C. in coal gasification technology, for example, a heat-resistant high-grade metal or JP-A-55-163 is disclosed.
As disclosed in Japanese Patent Publication No. 372 and the like, a valve body, a plug, a seat, and the like are made of ceramics. As a gate valve, a valve body in which a heat-resistant material such as ceramics or the like is filled is also known.

[0003]

However, in such a conventional high-temperature valve of an ultra-high temperature specification, a material made of a non-ferrous heat-resistant material such as a heat-resistant high-grade metal or ceramics has a remarkably high material cost. Therefore, there is a disadvantage that the valve price is inevitably high.On the other hand, a valve filled with a heat-resistant material requires a large gap between the valve and the heat-resistant material to prevent malfunction due to thermal deformation of the seat. However, there is a drawback that the size of the valve is increased and high partitioning accuracy cannot be obtained.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and has as its object to be relatively inexpensive and to prevent malfunction due to thermal deformation. An object of the present invention is to provide a high-temperature valve capable of performing flow control with high partitioning accuracy.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
The present invention relates to a circular fluid passage and a
Fluid passages at both ends of a seat having an insertion hole
First and second forming one continuous passage with
With one end of the cylindrical body with some play in the axial direction.
The seat and the first and second cylindrical bodies are
Placed inside the body and perpendicular to the axis of this valve body
A third cylindrical body is inserted into the valve body and its inner end is
Attached to the outer periphery of the seat with some play in the axial direction
Then, a vertically movable valve plug is inserted into the third cylindrical body.
Insert and slidably insert its inner end into the insertion hole,
An inner surface of the valve body, the seat, the first, second, and third seats;
Insulation material is filled in the space surrounded by the surface of the cylindrical body
It is characterized by the following.

[0006]

In the present invention, the seat is held by the cylindrical body with some play, and can move even when thermally deformed at a high temperature, so that the valve operation is not hindered. In addition, the first, second, and third cylindrical bodies, which also have play with respect to the heat-resistant material, can be thermally deformed at a high temperature and move in the axial direction, so that the movement of the seat is not restricted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a sectional view showing an embodiment in which the high-temperature valve according to the present invention is applied to a sleeve valve, FIG. 2 is a perspective view of a cylindrical body, and FIG. 3 is a perspective view of a support member. In these figures, a high-temperature valve 1 includes a valve body 2 connected in the middle of a pipe. The valve main body 2 includes a metal main body 2A formed in a thin cylindrical shape, and a pair of left and right flange members 2B and 2C joined by welding 3 to both ends of the main body 2A.
And a cylindrical lid mounting member 2D whose lower end is fitted in an opening formed in the center of the upper surface of the main body 2A and which is joined by welding 3. A heat-resistant material 4 is provided on the inner surfaces thereof. ing. The heat-resistant material 4 is formed by sintering ceramic powder. A seat 5 is provided at the center of the inside thereof, and first and second cylindrical bodies 6 and 7 are inserted and arranged on both sides of the seat 5.

The seat seat 5 is formed in a cylindrical body having both ends open, and is disposed substantially coaxially with the valve body 2 and has a fluid passage 8 having a circular hole. Has undergone a stellite curing treatment. An insertion hole 9 communicating with the circular fluid passage 8 is formed in the center of the upper surface of the seat 5. The seat 5 is provided with the main body 2A.
The lower surface is held by a pair of left and right support members 10 (FIG. 3) provided upright on the inner bottom surface of the.

The first and second cylindrical bodies 6 and 7 are made of metal, and their inner ends are slidably inserted and connected to annular grooves 11 and 12 formed on each side of the seat 5, respectively. The other end is desired at the opening at both ends of the valve body 2, and the outer end of the other end is in contact with the surface of the heat-resistant material 4 so that a plurality of, for example, three, holding the other end are provided. Rib 13
(FIG. 2) project radially. Further, rings 14 and 15 are fitted on the outer peripheral surfaces of the other end openings of the cylindrical bodies 6 and 7, respectively, to close gaps between the cylindrical bodies 6 and 7 and the heat-resistant material 4. The outer peripheries of these rings 14, 15 are joined and fixed to the inner peripheral surface open ends of the flange members 2B, 2C by welding 3.

A plug insertion hole 16 is formed at the center of the upper surface of the heat-resistant material 4, and the plug insertion hole 16 communicates coaxially with the insertion hole 9 of the seat 5.

Reference numeral 17 denotes a third cylindrical body loosely inserted into the plug insertion hole 16. The lower end of the cylindrical body 17 is inserted into an annular groove 18 formed on the upper surface of the seat 5 through an O-ring 19. It is slidably inserted and connected.

The heat-resistant material 4 is obtained by assembling the seat 5, the support member 10 , the rings 14, 15 and the first, second, and third cylindrical bodies 6, 7, 17 in the valve body 2 in advance. The space formed between these internal components and the valve body 2 is filled and sintered from the upper end opening of the lid component 2D. The seat 5 and the first and second cylindrical members 6 , 7 and a surface of the heat-resistant material 4, a felt-like heat-resistant sheet 22 having a thickness of about 2 mm is interposed therebetween, so that the seat seat 5, the first and second cylindrical bodies 6, 7 are provided. In the axial direction and a slight upward movement is possible.

Reference numeral 23 denotes a pipe mounting member fixed to the upper end opening of the lid mounting member 2D by welding 3, and reference numeral 24 denotes a pipe whose lower end is fitted into the center hole of the pipe mounting member 23 and fixed by welding. The third end of the pipe 24
The upper end of the cylindrical body 17 is fixed by welding 3.
25 is inserted valve plug via the seal member 26 and the packing Li <br/> ring 27 into the pipe 24, the lower end portion of the valve plug 25 is inserted in the third cylindrical member 17 and the seat 5 The upper end protrudes above the pipe 24 and is operatively connected to an actuator (not shown) through the hole 9 and into the circular fluid passage 8. Accordingly, with the driving of the actuator, the valve plug 25 changes the cross-sectional area of the circular hole-shaped fluid passage 8 moves up and down, it is possible to control the flow of the controlled fluid passing through the passage 8.

Thus, in the high-temperature valve having such a configuration, the seat 5 is held movably in the axial direction by the first and second cylinders 6 and 7, and the third cylinder is used to move the seat seat 5. Since the upward movement is permitted, even if the seat 5 is thermally deformed by the heat of the fluid to be controlled, the valve plug 25 does not malfunction and a high-temperature heat-resistant valve can be provided. The movement of the seat 5 is first.
Since it is limited by the second and third cylindrical bodies 6, 7, 17 and is small, high partitioning accuracy can be obtained. further,
The fixing of the seat 5 at normal temperature is performed by the O-ring 19, so that the seat 5 can be positioned and the O-ring 1
The degree of freedom of thermal deformation is obtained by the burning of No. 9.

[0015]

As described above, the high-temperature valve according to the present invention has a circular fluid passage and an insertion hole which communicate with each other at right angles to each other.
At both ends of the seat having holes, the circular fluid passage is provided.
First and second cylinders forming one continuous passage in
Connect one end of the body with some play in the axial direction,
These seats and the first and second cylindrical bodies are placed in the valve body.
And a third orthogonal to the axis of the valve body.
The cylindrical body is inserted into the valve body, and the inner end side is the seat seat.
With some play in the axial direction on the outer circumference of
Insert a vertically movable valve plug into the third cylinder
The inner end is slidably fitted into the insertion hole, and the valve
An inner surface of a body, and the seat, the first, second, and third cylinders;
Insulation material is filled in the space surrounded by the surface of the valve, preventing malfunctions due to thermal deformation and thermal expansion, and achieving high partitioning accuracy. It is not necessary to manufacture with ceramics or ceramics, and can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a high-temperature valve according to the present invention.

FIG. 2 is a perspective view of a cylindrical body.

FIG. 3 is a perspective view of a holding member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High temperature valve 2 Valve main body 3 Welding 4 Heat resistant material 5 Seat seat 6 First cylindrical body 7 Second cylindrical body 8 Circular fluid passage 9 Insertion hole 11 Annular groove 16 Plug insertion hole 17 Third cylinder 25 Valve plug

Claims (1)

(57) [Scope of request for utility model registration] 1. A fluid passage having a circular shape and communicating with each other at right angles to each other.
Fluid at both ends of the seat having the insertion hole.
A first and a first forming a continuous passage with the passage;
Give one end of the second cylindrical body some play in the axial direction
To connect these seats and the first and second cylindrical bodies.
Placed inside the valve body and orthogonal to the axis of this valve body
A third cylindrical body to be inserted into the valve body and
With some play in the axial direction on the outer periphery of the seat
And a valve plug which can be moved up and down in the third cylindrical body.
And the inner end thereof is slidably inserted into the insertion hole.
And the inner surface of the valve body, the seat, the first, second,
Filling the space surrounded by the surface of the third cylinder with heat insulating material
High temperature valve characterized by doing.