JPS6267395A - Valve with steam separator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a valve that is attached to a gas piping system mixed with liquid such as steam or compressed air to control the flow of gas.

Gas piping is originally intended to supply only gas to the user, but when using water vapor, for example, the generation of condensate cannot be avoided. Condensed water is generated during the compression process even with compressed air, and the same is true for other gases, so unless a large-scale device is used to separate and remove the condensed liquid by cooling, the liquid will be completely removed and sent to the piping. It is impossible to avoid it.

Rust and corrosion are likely to occur in gas piping where liquid is mixed.
Together with the mixed liquid, it is causing trouble for the equipment used. This also applies to valves, where solid foreign matter due to rust or corrosion can get caught in gaps between valve parts, preventing the valve body from fully seating, or blocking or covering the movement of the valve stem. Liquids also cause erosion of the valve surface and valve seat surface, causing electrolytic corrosion.

Conventional Technology and Problems Conventionally, a strainer was installed on the inlet side of the valve to remove solid foreign matter, but a steam separator was rarely installed. Since the strainer was simply a filtering net, the removal of minute foreign matter was incomplete.

Therefore, the above-mentioned disadvantages have hardly been solved.

Technical Means of the Invention The technical means of the present invention taken to solve the above-mentioned problems is to provide a cylindrical valve below the valve port in a valve used in a gas piping system where liquid such as steam or compressed air is mixed. A partition wall with a shape of
The lower end of the partition wall is bent outward, an inlet is opened on the outside of the upper part of the partition wall, and swirl vanes are provided around the outer periphery of the partition wall.

To explain how it works, the fluid that enters from the inlet cannot go directly to the valve port because of the partition wall, but is swirled by swirling vanes placed around the outer periphery of the partition wall, and liquid with a large mass and foreign matter are removed by the action of centrifugal force. Only light gas is blown out to the vertical side, and only the light gas heads from the lower end opening of the cylindrical partition wall to the valve port and flows out to the outlet side. The lower part of the cylindrical bulkhead is bent outward, so
Liquid adhering to the partition wall is also shaken out without going inside. The separated liquid and foreign matter are removed with a drain valve.

Effects of the Invention Since liquid and foreign matter are separated from gas by the action of centrifugal force by the swirl vanes, the separation efficiency is high and even minute foreign matter can be separated along with the liquid.

The use of a cylindrical bulkhead and swirl vane structure results in a compact structure and small size.

Since the lower end of the cylindrical partition wall is bent outward, the liquid at the lower end position of the partition wall rides on the surrounding swirling flow and jumps out to the outside, so the liquid does not travel along the partition wall and go around to the valve port side.

Example An example showing a specific example of the above technical means will be described.

Embodiment 1 (See FIG. 1) This embodiment combines a lift type check valve with a steam separator and an automatic discharge valve.

The valve body 1 forms an inlet 4 and an outlet 5 for fluid.

A valve seat 6 forming a valve lower is screwed to the transverse wall of the valve body 1, and the inlet 4 and the outlet 5 are communicated through the valve lower.

Attach the trap body 2 to the bottom of the valve body 1 with bolts,
A lower opening of the trap body 2 is closed with a trap lid body 3. In this way, the air/water separation Y20 and the drain valve chamber 13 are formed in the space below the valve lower.

A steam and water separation unit in which an inner double partition wall 8 and a swirling blade 10 are integrally formed is arranged in a steam and water separator 20. The steam/water separation unit is attached by placing the lower end of the outer cylinder on an annular step formed inside the upper end of the trap body 2. A wave spring ring 12 is interposed between the two. The lower part of the inner cylinder is gradually expanded downward to form a drainer 11,
The upper end is biased by a wave spring ring and is in contact with the lower surface of the partition wall of the valve body 1. Conical screen 9 on the outside of the inner cylinder
Place. The lower end of the screen 9 is in contact with the upper end of the outer cylinder, and the upper end is in contact with the lower surface of the transverse wall.

A spherical hollow float 14 is disposed in a free state in the drain valve chamber 13 below the steam/water separation unit i. The float cover 15 that covers the float 14 and is fixed to the trap lid body 3 can be removed. A ventilation hole 16 is opened in the float cover 15. A float seat 17 is formed on the trap body 3, and a discharge valve port 18 communicating with a drain port 19 is attached.

A valve body 1 is attached to the upper part of the valve body 1 via a gasket 10''4.
Attach 01 with the port (~), and attach the main valve 102 above the valve lower.
Place. The main valve 102 has a valve body 106 that opens and closes the valve lower.
and a piston 107 that slides on the inner circumferential wall of the valve body 1, and an outlet 5 is formed between the valve body 106 and the piston 107.
A through hole 105 is formed that communicates the side and the center hole of the piston. A labeling groove 103 is formed around the outer circumference of the piston 107.

If the pressure on the inlet 4 side is higher than the pressure on the outlet 5 side, the main valve 102 is pushed up by the inlet fluid, moves away from the valve seat 6, opens the valve lower, and the fluid at the inlet 4 flows to the outlet 5.

Conversely, if the pressure on the inlet 4 side is lower than the pressure on the outlet 5 side, the area of the fluid on the inlet 4 side acting on the valve body 106 of the main valve 102 is greater than the area of the outlet acting on the main valve 106 and piston 107 of the main valve 102. Since the fluid area on the 5th side is large, the main valve 102 is pushed up, and the valve seat 6 is separated into air and water by the action of cardiac force. That is, the water droplets are shaken out to the outside, flow down along the inner circumferential wall of the trap body 2, and are automatically removed from the drain valve port 18 to the drain port 19 as the float 14 ascends and descends. Embodiment 2 (See Figure 2) This embodiment combines a hero's valve with a steam separator and an automatic discharge valve.

The structures of the steam/water separator and the automatic discharge valve are substantially the same as those of the first embodiment (FIG. 1), so the same reference numerals will be used and detailed explanations will be omitted.

An adjusting screw 205 having a handle 202 at the upper end is provided on the upper part of the valve cover body 201 via a screw ring 204.

The lower end of the adjusting screw 205 is rotatably connected to the upper end of a bellows 203 with a valve stem 206 disposed in the center. The bellows retainer 201 receives the bellows 203 below, and the valve body 1 is seated neatly with a guide 209 inserted in the center of the lower part. The valve body 20G is lowered by lowering the valve body 208 to 11.
12 inch ('), and is in contact with the valve seat 6 of the valve body 1 through the guide. The valve body 1 has an inlet 4 and an outlet 5 coaxially, and communicates between them through a valve seat 6.

By rotating the adjusting screw 20'5 with the handle 203 and moving it up and down, the L valve body and the valve element connected to the adjusting screw move up and down, opening and closing the valve part. The bellows 203 expands and contracts as the valve stem 206 moves up and down.

Here, the bellows is provided to completely block fluid leakage to the outside from the connection between the valve body 206 and the valve body 1.

The fluid at the inlet 4 is operated by a steam separator and an automatic discharge valve so that only gas flows toward the valve lower.

Embodiment 3 (See Figure 3) In this embodiment, a control valve is combined with a steam separator and an automatic discharge valve.
It is something that

The structures of the steam separator and the automatic discharge valve are substantially the same as those in the embodiment shown in FIG.

A valve cover body 304 is placed on the top of the valve body 1, and a yoke 3 is placed on top of the valve cover body 304.
08 and the diaphragm case 311 is attached to its upper part. A main valve 301 is arranged below the valve lower. inner cylinder 6
A rib and a guide 303 are integrally formed inside the main valve 301 to guide the valve shaft of the main valve 301. The main valve 301 has a spring 30
Press it against the valve seat 6 with the elastic force of 2.

A valve rod 305 is placed through the valve cover body 304, and its lower end surface is brought into contact with the upper end surface of the boss of the main valve 301. Valve body 30
5 is guided by a kite 306 attached to the valve cover body 304, and is kept airtight with the valve cover body 304 by a backing 307. Above and above the central transverse wall of the yoke 308 of the valve stem 305, spring receivers 309 are attached vertically, and a spring 310 is arranged. Reference number 314 is a position detection means for detecting the position of the valve stem 305, and 315 is an adjustment screw for adjusting the elastic force of the spring 310.

The lower end surface is the upper spring receiver 3 inside the diaphragm case 311.
A diaphragm plate 313 is placed in contact with the top surface of 09 and into which the upper end of the valve body 304 is fitted, and a diaphragm 312 whose outer periphery is fitted into the diaphragm case 311 is placed on the top surface. Reference number 316 is an air port through which air for driving the diaphragm 312 is introduced.

Air is introduced from the air port 316 at the top of the diaphragm case 311 to apply air pressure to the top surface of the diaphragm 311. The diaphragm 311 becomes a downward force due to the thrust force obtained by multiplying its area by the air pressure, and comes to rest at a position balanced with the upward reaction force of the spring 310. In response to this displacement of the diaphragm, the valve stem 304 is displaced up and down. Then,
Main valve 301 and spring 302 in contact with the lower end of valve stem 304
The opening area of the valve lower is changed to adjust the flow rate from the inlet 4 to the outlet 5.

The position detection means 314 detects the position of the valve stem 305 and displays the opening degree of the main valve 301.

The elastic force of the spring 310 can be adjusted by turning the adjustment screw 315.

The fluid at the inlet 4 is operated by a steam separator and an automatic discharge valve so that only gas flows toward the valve lower.

Embodiment 4 (See FIG. 4) In this embodiment, a differential pressure valve is combined with a steam separator and an automatic drain valve.

The structure and operation of the lower steam separator and automatic drain valve refer to the first embodiment, and therefore, the differential pressure valve will be described below.

A yoke 4 is mounted on the upper part of the valve body 1 with a diaphragm 406 in between.
01 with port 1 ~, and the main valve 402 is installed below the valve lower.
Place. A lower cylindrical shaft of the main valve 402 is passed through a guide 404, and a spring 403 urges the main valve 402 against the valve seat 6 from below. Main valve upper protrusion and valve stem 40 below the diaphragm
5 can butt inside the valve lower.

Inside the yoke 401 is a spring 4 that biases the diaphragm 406.
The valve stem 409 is placed in the center of the yoke 401, with the bellows in the upper part and the diaphragm in the lower part.

In the lower yoke space, a spring receiver 410 is located above,
The spring 408 that biases the diaphragm 406 via the spring holder (pu 407 below) is housed in the yoke lower space.
A spring 413 is located below the spring receiver 412, and a bellows 414 is housed above the spring 413.

Valve stem 409 passes through the center of springs 413 and 408 and is placed in the center of yoke 401 . A fluid supply port to the bellows is provided at the upper end of the yoke.

This is a valve that detects the differential pressure between two points and adjusts the image to keep it constant to allow a constant flow rate to flow.

Two pressure points are detected at the intake port at the upper part of the yoke 401 and directly at the lower part of the diaphragm 406.

When the pressure under the diaphragm becomes lower than at another point and higher at another point, the diaphragm lowers and at the same time, pressure is supplied from another point to the bellows to expand it, lower the valve stem, and open the main valve. . Conversely, when the pressure below the diaphragm increases, it pushes up the diaphragm and at the same time reduces the supply to the bellows, causing the valve stem and main valve to rise and close the valve.

Embodiment 5 (See FIG. 5) An embodiment applied to a temperature control valve will be described. Since the steam separator and the drain valve are the same as those shown in FIG. 1, they will be given the same reference numerals and detailed explanations will be omitted.

A valve cover body 509 is attached to the upper part of the valve body 1, and a yoke 511 is fixed around it. The valve stem 5 is placed in the center of the valve cover body 509.
12 is hermetically sealed with a backing 513 and is slidably attached.

A spring 5 is attached to the main valve 501 below the valve seat 6 forming the valve lower.
02, it is elastically biased and placed. A sliding shaft located below the main valve 501 is guided by a hole in a guide portion 503 formed integrally with the partition wall 8. The spring 502 connects the guide portion 503 and the main valve 501
Place it between.

The lower end surface of the valve (512) contacts the tip end surface of the boss on the upper surface of the main valve 501, and the upper end portion is fixed to the end plate of the bellows 516.

The lower end of the bellows 516 is fixed to the lower opening edge of a casing 521 forming a pressure chamber 520 supported by the yoke 511. A flexible tube of the temperature sensing section 517 is connected to a hole made in the ceiling wall of the casing 521. The temperature sensing portion 517 and the pressure chamber 520 are filled with a thermal expansion fluid such as ether, that is, a temperature sensing fluid.

A bridge plate is passed across the middle part of the yoke 511, a pipe with a thread formed on the outer periphery is fixed, and the handle 514 is screwed together. A spring catch is disposed on the handle 514, and a spring 515 is interposed between the upper surface of the spring catch and the end plate of the bellows 516. By rotating the handle 514, the spring receiver is moved up and down, the compression period of the spring 515 is adjusted, and the bellows 516
Pressing the end plate upward, the pressure inside the pressure chamber 520 is adjusted.

The temperature control valve of this embodiment is used by inserting and attaching the temperature sensing portion 517 into a tank or the like, and connecting the inlet 4 and outlet 5 of the valve body 1 to piping for the fluid to be controlled. The temperature of the object whose temperature is to be controlled, such as a tank, is detected by the temperature sensing part, and the bellows 516 is compressed by pressure saw change due to thermal expansion of the enclosed temperature sensing fluid, and the main valve 501 is displaced via the valve stem 512. The flow rate from the inlet 4 to the outlet 5 is adjusted by opening and closing the valve lower.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a check valve according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a bellows valve according to another embodiment, FIG. 3 is a cross-sectional view of a control valve according to another embodiment, and FIG. The figure is a sectional view of a differential pressure valve of another embodiment, and FIG. 5 is a sectional view of a temperature control valve of another embodiment. 4: Inlet 5: Outlet A: Valve port 8: Partition wall 9 Niscreen 10: Swivel vane 11: Drainer 14: Float 19: Drain port

Claims (1)

[Claims] 1. A cylindrical partition wall is provided below the valve opening, the lower end of the partition wall is bent outward, an inlet is opened on the outside of the upper part of the partition wall, and a swirl vane is provided around the outer periphery of the partition wall. A valve equipped with a water separator for use in piping systems with mixed gases.