KR200309153Y1 - dump function type valve - Google Patents

Abstract

Disclosure of the Invention The present invention is to solve the problem of fluid leakage due to poor parallelism between two valve seat portions caused by deformation and repeated seat surface polishing maintenance caused by the valve being used in a high temperature atmosphere for a long time.

In the present invention for realizing this, in the dump-type valve configured to open and close the valve port 6 in the valve body 8 by the action force from the actuator 30 transmitted through the stem 24, the valve It is provided to be embedded in the body (8), the valve seat portion 12a is formed, a plurality of holes 14a, 16a (18a) (14b) (16b, 18b) of the cage formed in a structure that is drilled ( 10), the valve plug 20 is built to slide up and down by moving the cage 10, the pilot disk 46 is built up to be moved up and down by sliding to the valve plug 20 as described above, A spring member 50 which is inherent in the valve plug 20 to the lower position of the pilot disk 46 and exerts elasticity, and an upper end portion of the pilot disk 46 may pass through the valve plug 20. It can be configured to further include a disk cap 52 coupled to Is a dump valve built in, the pilot disk as claimed there is provided a. Therefore, the present design replaces the conventional double seat type dump function valve without increasing the actuator capacity, thereby preventing economic and time loss caused by fluid leakage due to poor seat surface contact of the double seat type valve.

Description

Dump function type valve with built-in pilot disc

The present invention relates to a dump valve with a built-in pilot disk.

More particularly, the present invention relates to a valve having a built-in pilot disk and a dump function, which effectively removes the upper pressure resistance applied to the plug when the plug is raised to open the valve, thereby maintaining the pressure balance inside the valve.

The valve is used to control or block the flow rate of gas or liquid flowing in the pipe, or flow out of the container, and stop valve (globe valve and angle valve) / slot valve / check valve / pressure reducing valve / Various valves, such as safety valves, are widely used. The type and dimensions are defined in the standard, and may be divided into screw type and flange type according to the connection method with the pipe, and the material is medium temperature and medium pressure. ) Bronze is used, high temperature and high pressure, single copper is used, and large size is bronze, cast iron, copper alloy, alloy steel, etc., depending on the pressure and temperature.

On the other hand, the slew valve is a valve in which the flow rate is reduced or blocked by the lifting amount of the valve plate installed at right angles to the flow of the fluid, a similar valve has a dump function valve according to the present invention have.

The dump-type valve as described above generally has a valve port (seat bore size) that has the same size as the valve inlet and outlet diameters so that the fluid can be flowed and interrupted at one time.

That is, as shown in Figs. 1 and 2, the tubular body (2) (4) is provided with a valve body (8) having a valve port (6) formed in a direction perpendicular to the flow direction of the fluid can be connected to both sides It is done.

The valve body 8 has a cylindrical cage 10 embedded therein, the cage 10 is formed with a valve seat portion 12 and a plurality of through holes 14a, 16a, 18a, 14b. 16b and 18b are open.

In addition, the cage 10 as described above is built so that the cylindrical valve plug 20 to slide, the plurality of balance holes (22a, 22b) in the longitudinal direction of the valve plug 20, have.

Meanwhile, an end portion of the stem 24 is connected to a central portion of the upper surface of the valve plug 20, and the stem 24 is connected to the valve body 8 to cover the upper opening of the valve body 8. It is connected with the actuator 30 in the state which penetrates the 26 and the yoke 28 couple | bonded with the upper side.

As such, the flow path is formed from the fluid inlet side to the upper portion of the valve plug 20 through the plurality of balance holes 22a and 22b even when the valve port 6 is closed by the valve plug 20. As a result, the differential pressure of the upper and lower parts of the valve plug 20 is not generated while the valve plug 20 is lifted.

In addition, the fluid exits through the balance holes 22a and 22b of the valve plug 20 while the valve seat 12 of the lower end of the valve plug 20 is in close contact with the corresponding portion of the cage 10. In order not to flow to the side, another valve seat portion 32 is formed at a corresponding portion between the valve plug 20 and the cage 10.

By the way, in the conventional valve having the valve seat portion in at least two positions as described above, the two valve seat portions may be completely circumferentially in close contact with each other to prevent fluid leakage, but deformation and repeated seat surface polishing caused by the valve being used in a high temperature atmosphere for a long time There was a problem in that fluid leakage occurred due to the poor parallelism between the two valve seat parts due to maintenance, and in order to solve such a problem, an enormous loss was caused by the investment of time due to economic investment and repair replacement work.

The present invention is devised to solve the above problems, the present invention is a problem of fluid leakage due to poor parallelism between the two valve seat portion due to the deformation and repeated seat surface polishing maintenance caused by the valve used in a high temperature atmosphere for a long time It is an object of the present invention to provide a dump-type valve that can be eliminated inherently, thereby preventing the enormous loss caused by the investment of time due to economic investment and repair replacement work.

1 is an exploded perspective view for illustrating a dump function valve configuration incorporating a conventional pilot disc;

2 is an assembled cross-sectional view for illustrating a dump function valve configuration incorporating a conventional pilot disc;

3 is an exploded perspective view for illustrating a dump function valve configuration incorporating a pilot disc according to the present invention;

4 is an exploded cross-sectional view for illustrating a dump function valve configuration incorporating a pilot disk according to the present invention;

5A to 5C are assembled cross-sectional views for illustrating a dump function valve incorporating a pilot disc according to the present invention.

<Explanation of symbols for the main parts of the drawings>

6, 44: valve port 8: valve body

10: cage 12a, 12b, 42a, 42b: valve seat

14a, 16a, 18a, 14b, 16b, 18b: Through hole 20: Valve plug

22a, 22b: Balance hole 24: Stem

26: Bonnet 28: York

30: actuator 46: pilot disc

48: flange 50: spring member

52: disc cap

In order to achieve the object of the present invention as described above, the present invention is provided with a dump-type valve configured to open and close the valve port inside the valve body with the action force from the actuator transmitted through the stem, provided to be embedded in the valve body However, the valve seat portion is formed, the cage is formed of a structure in which a plurality of holes are drilled, the valve plug is built so as to slide up and down by moving the cage, and the built-in to be moved up and down by sliding on the valve plug as described above A pilot disk, a spring member embedded in the valve plug in a lower position of the pilot disk and exerting elasticity, and a disk cap coupled to the upper end of the pilot disk through the valve plug. A dump with a built-in pilot disk, characterized in that it is configured to include It provides intelligent valve.

In addition, in the present invention, the valve plug, which is built to slide and move up and down by the cage, is formed with another valve seat portion corresponding to the valve seat portion of the cage, and another valve seat portion and another valve port are positioned at the lower center thereof. Provided is a dump function valve with a built-in pilot disk, characterized in that formed in a structure formed.

In addition, in the present invention, the pilot disk, which is built so that the valve plug slides and moves up and down, is formed with another valve seat portion corresponding to another valve seat portion of the valve plug, and a flange portion having a plurality of balance holes is formed. Provided is a dump-type valve with a built-in pilot disk, characterized in that formed in a structure.

Hereinafter, with reference to the accompanying drawings an embodiment of a valve according to the present invention equipped with a pilot disk in detail as follows. Hereinafter, with reference to the accompanying drawings will be described in detail the present invention in accordance with a preferred embodiment of the present invention.

Attached Figure 3 is an exploded perspective view for showing a dump function valve configuration with a built-in pilot disk according to the present invention, Figure 4 is an exploded cross-sectional view for showing a dump function valve configuration with a built-in pilot disk according to the present invention As a dump function valve of the present invention, the actuator 30, the yoke 28, the bonnet 26, the stem 24, the cylindrical cage 10, the valve body 8, and the like, as in the related art, are provided. Made of structure.

That is, an end portion of the stem 24 is connected to a central portion of the upper surface of the valve plug 20, and the stem 24 is connected to the valve body 8 to cover the upper opening of the valve body 8. It is connected with the actuator 30 in the state which penetrates the 26 and the yoke 28 couple | bonded with the upper side.

Meanwhile, a cylindrical cage 10 is embedded in the valve body 8, and the cage 10 has a valve seat portion 12a formed therein, and a plurality of through holes 14a, 16a, 18a, and 14b. 16b and 18b are drilled, and the cage 10 is built in such a way that the cylindrical valve plug 20 can slide.

In addition, another valve seat portion 12b corresponding to the valve seat portion 12a of the cage 10 is formed at a lower circumferential outer portion of the valve plug 20, and another valve is positioned at a lower center thereof. The seat portion 42a and the other valve port 44 are formed.

In addition, the pilot plug 46 is incorporated in the valve plug 20 so as to slide and move up and down. The pilot disc 46 has another valve seat portion 42a of the valve plug 20. Another valve seat portion 42b corresponding to this is formed, and a flange portion 48 through which a plurality of balance holes 22a and 22b is formed is formed.

The flange portion 48 of the pilot disc 46 is always applied to the upward force by the spring member 50, which is embedded in the valve plug 20 in the lower position thereof to exert elasticity.

In addition, the upper side of the valve plug 20 is coupled to the disk cap 52 in a state where the upper end of the pilot disk 46 can be coupled, and the valve plug 20 in the upper central position As one end of the stem 24 is engaged.

The present invention configured as described above is functioned as follows.

(Action 1)

As shown in FIG. 5A, the fluid working pressure is provided between the plurality of through holes 14a, 16a, 18a, 14b, 16b, and 18b of the cage 10 and the valve plug 20 from the fluid valve inlet side. Through the valve plug 20 is acted on the upper space.

At this time, the corresponding valve seat portions 42a and 42b and the corresponding valve port 44 of the pilot disc 46 and the valve plug 20 are closed to maintain the flow of the fluid.

(Action 2)

When the pilot disc 46 is pulled up through the stem 24 by the action force of the actuator 30, the corresponding valve seat portions 42a and 42b of the pilot disc 46 and the valve plug 20 and the corresponding valve port are shown. 44 is opened as shown in FIG. 5B.

At this time, the fluid working pressure that has been held in the upper space of the valve plug 20 exits to the fluid outlet side through the valve port 44 opened as the valve seat portions 42a and 42b are opened.

(Action 3)

As shown in FIG. 5C, when the pilot disc 46 is further pulled up through the stem 24 by the force of the actuator 30, the corresponding valve seat portion of the pilot disc 46 and the valve plug 20 ( 42a) 42b and the valve port 44 opened by it are in the maximum opening state.

At this time, the plurality of through holes 14a, 16a, 18a, 14b, 16b, 18b of the cage 10 and the valve seat portions 12a, 12b between the cage 10 and the valve plug 20 are Simultaneously opened, the working fluid on the inlet side exits to the outlet side through the valve port 6 opened by the corresponding valve seat portions 12a and 12b.

With this configuration and action, even when the valve port 6 is closed by the valve plug 20, the valve plug 20 is operated from the fluid inlet side through the plurality of balance holes 22a and 22b in the operation of the pilot disc 46. A flow path is formed up to a lower portion thereof, so that the differential pressure of the upper and lower portions of the valve plug 20 is not generated while the valve plug 20 is elevated.

In addition, even if the valve is used in a high temperature atmosphere for a long time, deformation is caused, or even if the parallelism between the two valve seat portions 12a, 12b, 42a, 42b is caused by repeated seat surface polishing maintenance, As long as an independent close action is performed at the valve seat portions 12a, 12b, 42a, 42b at the position, leakage of the fluid can be prevented at the source.

The present invention is not limited to the embodiments described above, it can be variously modified and changed by those skilled in the art, which is included in the spirit and scope of the present invention defined in the claims.

As described above, the present invention can solve the problem of fluid leakage due to the poor parallelism between the two valve seat portion due to the deformation and repeated seat surface polishing maintenance caused by the valve used in a high temperature atmosphere for a long time. Achieve effect.

Accordingly, the present invention can achieve the effect that can ultimately prevent the enormous loss caused by the investment of time according to the economic investment and repair replacement work.

Claims (3)

In the dump-type valve configured to open and close the valve port 6 inside the valve body 8 by the action force from the actuator 30 transmitted through the stem 24, It is provided to be embedded in the valve body 8, the valve seat portion 12a is formed, a plurality of through holes 14a, 16a, 18a, 14b, 16b, 18b is formed in a perforated structure Cage 10, A valve plug (20) embedded in the cage (10) to slide and move up and down, A pilot disc 46 built in such a manner as to be moved up and down by sliding on the valve plug 20 as described above; A spring member 50 inherent in the valve plug 20 to the lower position of the pilot disk 46 to exert elasticity; The valve plug 20, the upper side of the pilot disk 46, characterized in that it further comprises a disk cap 52 which is coupled in a state that can be penetrated, dump function with a built-in pilot disk valve. According to claim 1, The valve plug 20 is built so as to slide up and down by moving the cage 10, Another valve seat portion 12b corresponding to the valve seat portion 12a of the cage 10 is formed, and another valve seat portion 42a and another valve port 44 are formed at the lower center position thereof. A dump function valve with a built-in pilot disc, characterized in that the structure. According to claim 1, The pilot disk 46 is built so that it can be moved up and down by sliding on the valve plug 20, Another valve seat portion 42b corresponding to another valve seat portion 42a of the valve plug 20 is formed, and a flange portion 48 through which a plurality of balance holes 22a and 22b are formed is formed. A dump function valve with a built-in pilot disc, characterized in that the structure.