KR101554315B1

KR101554315B1 - Cokes gas cock valve

Info

Publication number: KR101554315B1
Application number: KR1020140032892A
Authority: KR
Inventors: 서준
Original assignee: 주식회사 엠티에스
Priority date: 2014-03-20
Filing date: 2014-03-20
Publication date: 2015-09-18

Abstract

The present invention improves the airtightness of the valve to prevent backlash and explosion due to gas leakage, prevent troubles caused by plugging and scratches, and prolong the life of the valve, prevent excessive torque, To a cock valve for a coke gas so as to reduce costs.
The present invention relates to a body (10) having a tapered plug groove (11), two side gas passages (12) and a lower side tube (13) and a plurality of grease holes (14); And a sine curve groove 24 formed on the upper and lower shafts 21 and 22, the gas passages 23 and the upper shafts 21, which are rotatably mounted on the plug groove 11 of the body 10 A plug 20; An upper cover 30 which is airtightly assembled to the upper portion of the body 10 and has a shaft hole 31 through which the upper shaft 21 passes; A pair of lifting balls 41 which are hermetically assembled to the upper portion of the upper cover 30 and are fitted to both sides of the sine curve groove 24 to move the plug 20 up and down during rotation and a pair of lifting balls 41, A lifting block (40) having a grease inlet (40a) and a grease inlet (40b); A restoring spring 50 mounted on the lower shaft 22 to closely contact the plug 20 with the plug groove 11; A lower cover 60 airtightly assembled to the lower portion of the lower shaft tube 13; And an indicator 70 provided on the upper shaft 21 and indicating the degree of rotation of the plug 20.

Description

[0001] Cock gas cock valve [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cock valve for opening and closing a flow of a fluid including a large amount of sticking material such as tar, and more particularly, to a cock valve for a coke gas which increases the air- To a cock valve for a coke oven gas which can prevent troubles due to plugs and scratches, prolong the life of the valve, prevent over torque, and reduce the cost of replacing the valve.

Generally, piping for guiding the flow of gas is used in steel making facilities and the like, and a gas valve for opening and closing the flow of the gas is employed in such a pipe.

Particularly, it is important that the valve for coke gas, which is equipped in a facility for producing coke and is installed in a pipe for supplying fuel gas, is maintained in a state of excellent airtightness. This is important in terms of prevention of environmental pollution due to leakage of fuel gas, This is especially important.

In addition, many facilities in the steelworks have installed and operate a large number of feed pipes to transport fluids such as gas or oil or cooling water to the facility.

Such a transfer pipe is provided with a number of valves for opening and closing the pipe as required. Normally, conventional valves are sealed by using gland packing, but the sealing function of the packing is weak and the sealing is not completely done due to deformation, damage or the like. Therefore, the conventional valve has a problem that when the valve shaft moves during the operation of the handle for opening and closing the pipe, gas is leaked to the valve shaft assembly due to the high pressure of the fluid flowing in the transfer pipe. This problem is exacerbated by the deformation or wear of the packing when the material being transported is oil or corrosive.

For example, the CDQ (Cokes Dry Quenching) facility is a facility for dry digesting red coke extruded from coke ovens. COG (Cokes Oven Gas), a byproduct gas generated during the process, do.

The COG includes various acid components such as tar, ammonia, light oil, sulfur, and hydrogen sulfide. Therefore, the packing of the valve shaft assembly is deformed by the COG and gas is leaked out. When COG leaks through the valve shaft assembly, the working environment is contaminated by harmful volatile substances, and corrosion of various equipments occurs.

Particularly, since the valves are horizontally installed due to the handling of high temperature, high pressure and corrosive materials and the structure of the equipment, the phenomenon of leaking gas through the valve shaft assembly becomes more serious. Details of a valve that is provided at an appropriate portion of the fuel gas transfer pipe and configured to open and close the flow of gas are disclosed in Korean Patent Application Publication No. 1999-0018289.

However, since COG (Cokes Oven Gas) generally includes various kinds of sticking materials due to the principle of gas production, the inside of the valve is fixed, and the hardened fixture has a strong hardness so as to scratch the body, Thereby shortening the lifetime of the driving part and the valve.

Also, since the plug is inevitably used at a constant distance from the valve body due to the sticking water, there is a problem that the gas leakage is inevitably caused and that the work efficiency is not improved due to frequent replacement and maintenance.

Patent Document: Published Utility Model Publication No. 1999-0018289 (Jun. 1999)

It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art, and to provide a valve for opening and closing a flow of fluid including a large amount of sticky material such as tar to improve the airtightness of the valve to prevent backlash and explosion The present invention provides a cock valve for a coke oven gas.

It is another object of the present invention to provide a cock valve for a coke oven gas which is capable of preventing an over-torque trouble due to the insertion and scratch of a plug.

It is still another object of the present invention to provide a cock valve for coke gas which can prevent erosion of a gas contact portion.

It is still another object of the present invention to provide a cock valve for coke gas which can extend the service life of the valve, prevent excessive torque, and reduce the cost of replacing the valve.

In order to achieve the above object, the present invention provides a tapered plug, a gas passage, a lower shaft tube, and a plurality of grease holes, each of which has a tapered plug groove, a gas inlet, A plug having a sine curve groove is rotatably mounted on the upper cover, and an upper cover having a shaft hole penetrating the upper shaft is hermetically assembled to an upper portion of the body, And a lifting block having a shaft hole and a greasing hole through which the upper shaft is passed, is airtightly assembled, and a restoring spring is attached to the lower shaft so as to bring the plug into close contact with the plug groove , A lower cover is airtightly assembled to a lower portion of the lower shaft tube, and an indicator for indicating a rotation degree of the plug is provided on the upper shaft The.

The lower shaft of the plug is provided with a bearing for supporting the restoring spring and a tension adjusting ring for adjusting the tension of the restoring spring.

The height adjustment groove is formed on the upper surface of the upper cover, and an altitude adjusting protrusion protruding from the height adjusting groove is protruded to a lower portion of the lifting block. The height adjusting is performed through a plurality of block bolts To the upper cover.

Further, the lifting ball is configured to receive elasticity of a spring whose tension is adjusted by a tongue wrench bolt.

Further, Teflon coating is applied to the surface of the plug, and the surface of the sine curve groove and the lifting ball is cured.

According to the cock valve for coke oven gas of the present invention, since the plug groove and the plug rotate separately while reducing the rotational friction of the valve through simultaneous upward and downward and rotational movement of the plug using the sinusoidal groove and the lifting ball, It is possible to fundamentally solve the problem.

In addition, by utilizing the restoring force of the restoring spring, the plug is always pushed to the lower part of the plug groove, thereby preventing the eccentricity of the plug and allowing the plug to come into close contact with the plug groove at the start and end of rotation. There is an effect that can be.

In addition, since the airtightness of the valve can be structurally increased, backfire and explosion due to gas leakage can be prevented, structure lifetime extension, over torque prevention, and valve replacement cost can be reduced.

In addition, it is possible to prevent erosion by applying Teflon coating on the whole outer surface of the plug, and it is possible to shorten the cost and time because the plug is damaged first when the parts are damaged or scratches, There is an effect.

1 is a perspective view of the present invention.
2 is an exploded perspective view of the present invention.
3 is a sectional view of the present invention.
4 is an enlarged view of the "A" portion of FIG.
5 is an enlarged view of a portion "B" in FIG. 3;
6 is an enlarged view of a portion "C" in FIG. 3;
7 is a cross-sectional view showing a state in which a block bolt is assembled in a lifting block according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the technical structure of the present invention will be described in detail with reference to the accompanying drawings.

1 to 7, the cock valve for coke oven gas according to the present invention includes a tapered plug groove 11, a pair of gas passages 12 and a lower shaft tube 13, and a plurality of grease holes 14 (10); And a sine curve groove 24 formed on the upper and lower shafts 21 and 22 and the gas passages 23 and the upper shafts 21 so as to be rotatably mounted on the plug groove 11 of the body 10 A plug 20; An upper cover 30 which is airtightly assembled to the upper portion of the body 10 and has a shaft hole 31 through which the upper shaft 21 passes; A pair of lifting balls 41 which are hermetically assembled to the upper portion of the upper cover 30 and are fitted to both sides of the sine curve groove 24 to move the plug 20 up and down during rotation and a pair of lifting balls 41, A lifting block 40 having a grease inlet 40a and a grease inlet 40b; A restoring spring 50 mounted on the lower shaft 22 of the plug 20 to closely contact the plug 20 with the plug groove 11; A lower cover 60 airtightly assembled to the lower portion of the lower shaft tube 13; And an indicator 70 provided in the upper shaft 21 and indicating the degree of rotation of the plug 20.

Here, the cock valve for coke oven gas according to the present invention opens and closes a flow of fluid including a large amount of sticky material such as tar. The cock valve for coke oven gas according to the present invention includes a body 10, a plug 20, A lifting block 40, a restoring spring 50, a lower cover 60, and an indicator 70. The lifting block 40,

The body 10 constitutes the body of the cock valve for coke gas according to the present invention. In the center of the body 10, a plug groove 11 is formed in a tapered shape having a smaller diameter from top to bottom A gas passage 12 is formed on both sides of the body 10 and a lower shaft tube 13 is provided at a center lower portion of the body 10 and a plurality of A grease injection port 14 is formed. At this time, a flange 11a is provided on the upper outer side of the plug groove 11 so as to connect the upper cover 30, and flanges 12a are provided on the outer side of the gas passages 12 on both sides, And a nipple 14a is provided on each of the plurality of grease injection ports 14. Each of the plurality of grease injection ports 14 is provided with a nipple 14a for supporting the upper portion of the restoration spring 50 on the inner diameter side of the lower shaft tube 13.

The plug 20 is rotatably mounted in the plug groove 11 of the body 10 so as to open and close the gas passage 12. Upper and lower portions of the plug 20 are provided with an upper shaft 21, A gas passage 23 is formed in the plug 20 so as to discharge the gas and a sinusoidal groove 24 for lifting is provided on the upper shaft 21 of the plug 20, . The plug 20 is formed in a tapered shape having a small diameter from top to bottom and a grease groove 20a is formed on the outer surface of the plug 20. The top shaft 21 is connected to the top cover 30 and the lifting block 40 A tool such as a handle or a spanner is coupled to the upper shaft 21 protruding to the outside so as to rotate the plug 20 and the lower shaft 22 is coupled to a lower shaft And bushes 1a and 1b are mounted on the upper and lower shafts 21 and 22 so as to align the center of rotation with each other. 20, the lifting balls 41 for moving the plugs 20 up and down at the same time are respectively fitted.

Since the grease groove 20a is machined and grease is injected into the plug 20, the flow of gas is prevented when the plug 20 is separated from the plug groove 11, and when the plug 20 is opened in a completely closed state or vice versa So that the plug 20 can be smoothly lifted and rotated. At this time, according to the present invention, the airtightness of the valve is increased to prevent backlash and explosion due to gas leakage, to prolong the life of the valve, to prevent over torque, and to reduce the cost of replacing the valve.

The upper cover 30 is airtightly assembled to the upper portion of the body 10. A shaft hole 31 through which the upper shaft 21 passes is formed at the center of the upper cover 30. [ At this time, the upper cover 30 is assembled to the body 10 through a plurality of bolts, and the gasket 2 is mounted between the upper cover 30 and the body 10.

The lifting block 40 is airtightly assembled to the upper part of the upper cover 30. The lifting block 40 is fitted to both sides of the sine curve groove 24 on both sides of the lifting block 40, A shaft hole 40a through which the upper shaft 21 passes is formed at the center of the lifting block 40. Grease is injected into one side of the lifting block 40 A grease injection port 40b is formed. At this time, installation holes 40-1 for receiving the lifting balls 41 are formed on both sides of the lifting block 40, nipples 40b-1 are formed on the grease injection port 40b of the lifting block 40, Respectively.

The lifting ball 41 supports the sinusoidal groove 24 of the upper shaft 21 when the plug 20 rotates and the lifting ball 41 rotates the plug 20 and the body 10, Thereby separating the plug 20 from the plug groove 11. The plug 20 is thus simultaneously rotated and moved up and down to prevent the plug 20 from being easily caught by the plug 20 and the trouble due to scratches And reduces the rotational friction force. At this time, according to the present invention, the plug groove 11 is formed by simultaneously vertically and rotationally moving the plug 20 using the sinusoidal groove 24 of the upper shaft 21 and the lifting ball 41 of the lifting block 40, And the plug 20 are spaced apart from each other, so that the rotational friction of the valve can be reduced, and the plug 20 can be fundamentally eliminated.

The restoring spring 50 is mounted on the lower shaft 22 of the plug 20. The restoring spring 50 elastically pulls the plug 20 downward to closely contact the plug groove 11 do. According to the present invention, when the valve is horizontally installed, the plug 20 is always pushed to the lower portion of the plug groove 11 by using the restoring force of the restoring spring 50, thereby blocking the eccentricity of the plug 20, The plug 20 can be brought into close contact with the plug groove 11 at the start point (open or closed) and at the end point of rotation (open or closed), and gas leakage can be cut off from the source.

The lower cover 60 is airtightly assembled to the lower portion of the lower shaft tube 13, and the lower cover 60 is assembled to the lower shaft tube 13 through a plurality of bolts. At this time, a gasket (3) is mounted between the lower cover (60) and the lower shaft tube (13).

The indicator 70 is installed on the upper shaft 21 of the plug 10 and the indicator 70 serves to represent the rotational opening degree of the plug 20. At this time, the indicator 70 is provided with a pointer pin 71, and the upper cover 30 is provided with a display unit 72.

Hereinafter, various embodiments of the cock valve for coke oven gas according to the present invention will be described.

6, the lower shaft 22 of the plug 20 is provided with a bearing 51 for supporting the restoring spring 50 and a tension adjusting member for adjusting the tension of the restoring spring 50, Ring 52 is mounted.

The bearing 51 is mounted on the lower shaft 22 so as to be disposed below the restoring spring 50. The bearing 51 serves to lubricate the rotation so that the restoring spring 51 is not caught by the retaining spring 51 .

The tension adjusting ring 52 is mounted on the lower shaft 22 so as to be disposed below the bearing 51. The tension adjusting ring 52 integrally connects the restoring spring 50 with the plug 20, (50). At this time, the tension adjusting ring 52 is fixed to the rotary shaft 22 through a plurality of set screws 52a.

According to the embodiment of the present invention, as shown in FIGS. 5 and 7, an upper height adjustment groove 32 is formed on the upper surface of the upper cover 30 in a two-stage circular shape, An elevation adjustment projection 40c is fitted to the upper cover 30 and the lifting block 40 is airtightly assembled to the upper cover 30 so as to be capable of height adjustment through a plurality of block bolts 40d.

That is, according to the present invention, the altitude of the lifting block 40 can be adjusted through the altitude adjusting groove 32, the altitude adjusting projections 40c, and the block bolts 40d. Considering that a slight difference in the taper angle between the plug 20 and the plug groove 11 (processing error) and a certain height due to the difference between the outer diameter of the plug 20 and the inner diameter of the plug groove 11 can not be maintained, The plug 40 can be adjusted by the block bolt 40d so that the height of the plug 20 can be kept constant. At this time, if the position of the sine curve groove 24 and the lifting ball 41 is checked while the upper cover 30 is covered during assembly, if the height of the lifting block 40 is adjusted, 24 are positioned so that the lifting ball 41 is fitted.

5, mounting holes 40-1 for receiving the lifting balls 41 are formed on both sides of the lifting block 40, and the lifting balls 41 are installed Is configured to receive the elastic force of the spring (43) whose tension is adjusted by the tundra wrench bolt (42) provided outside the hole (40-1). According to the present invention, since the lifting ball 41 can support the sinusoidal groove 24, the spring 43 can be installed to maintain a constant thrust and at the same time to allow the lifting ball 41 to rotate, It is possible to minimize the wear of the ball 41 and the sine curve groove 24, thereby prolonging the service life. 5, reference numerals 44 and 45 denote spring bases and reference numeral 46 denotes an O-ring.

4 shows how the sinusoidal groove 24 and the lifting ball 41 engage and the current state is that the lifting ball 41 supports the highest point of the sinusoidal groove 24, Is naturally in contact with the lowest point of the altitude, that is, the plug groove 11 of the body 10. As the upper shaft 21 rotates, the plug 20 is gradually lifted to reach the highest point. In this state, the plug 20 and the plug groove 11 of the body 10 are spaced apart from each other by a maximum distance, Thereafter, the plug 20 is lowered along the sinusoidal grooves 24 to come into contact with the plug groove 11 of the body 10.

According to the embodiment of the present invention, the surface of the plug 20 is coated with Teflon, and the surfaces of the sinusoidal grooves 24 and the lifting balls 41 are hard coated.

The plug 20 can be used immediately after Teflon surface coating is performed after polishing, and Teflon coating is only repaired at the time of maintenance. At this time, Teflon coating is applied to the entire outer surface of the plug 20 to prevent erosion, while maintaining hardness lower than that of the body 10, and various kinds of foreign substances are interrupted and rotated to break or scratch the parts It is possible to obtain economical efficiency and shorten the time because the plug 20 is first bumped, and only the plug 20 is coated and grease grooved during valve maintenance.

The surface hardness of the sinusoidal grooves 24 and the lifting balls 41 is increased by hard coating to minimize wear.

2, reference numerals 4a, 4b and 4c denote O-rings, 4d denotes a plate, 5a denotes a seal, 5b denotes a seal cover, and 6 denotes a collar.

Therefore, the present invention can be applied to the plug groove 11 and the plug groove 11 by simultaneously vertically and rotationally moving the plug 20 using the sinusoidal groove 24 of the upper shaft 21 and the lifting ball 41 of the lifting block 40 There is an advantage in that it is possible to fundamentally solve the plugging of the plug 20 structurally because the plug 20 rotates and rotates to reduce the rotational friction of the valve.

The present invention is also advantageous in that the plug 20 is always pushed to the lower portion of the plug groove 11 by using the restoring force of the restoring spring 50 so as to block the eccentricity of the plug 20, 20 can be brought into close contact with the plug groove 11, there is an advantage that gas leakage can be structurally cut off from the source.

As described above, since the present invention can structurally increase the airtightness of the valve as described above, it is possible to prevent backflushing and explosion due to gas leakage, structurally, to prolong the life of the valve, prevent over torque, There is an advantage to be saved.

In addition, the present invention can prevent erosion by applying Teflon coating on the entire outer surface of the plug 20, and when the parts are broken or scratches, the plug 20 is damaged first, The plug (20) can be reused simply by Teflon coating, which is advantageous in that it is economical and can shorten the time.

10: Body 11: Plug groove
12: gas cylinder 13: lower shaft tube
14: Grease inlet 20: Plug
21: upper shaft 22: lower shaft
23: gas cylinder 24: sinusoidal groove
30: upper cover 31:
32: height adjusting groove 40: lifting block
40a: shaft hole 40b: grease inlet
40c: altitude adjustment projection 40d: block bolt
41: Lifting ball 42: Tundish wrench bolt
43: spring 50: restoring spring
51: Bearing 52: Tension adjustment ring
60: lower cover 70: indicator

Claims

A body 10 having a tapered plug groove 11, a pair of gas passages 12 and a lower shaft tube 13, and a plurality of grease injection ports 14; And a sine curve groove 24 formed on the upper and lower shafts 21 and 22 and the gas passages 23 and the upper shafts 21 so as to be rotatably mounted on the plug groove 11 of the body 10 A plug 20; An upper cover 30 which is airtightly assembled to the upper portion of the body 10 and has a shaft hole 31 through which the upper shaft 21 passes; A pair of lifting balls 41 which are hermetically assembled to the upper portion of the upper cover 30 and are fitted to both sides of the sine curve groove 24 to move the plug 20 up and down during rotation and a pair of lifting balls 41, A lifting block (40) having a grease inlet (40a) and a grease inlet (40b); A restoring spring 50 mounted on the lower shaft 22 to closely contact the plug 20 with the plug groove 11; A lower cover 60 airtightly assembled to the lower portion of the lower shaft tube 13; And an indicator (70) provided on the upper shaft (21) and indicating the degree of rotation of the plug (20).

The spark plug according to claim 1, wherein a bearing (51) for supporting a restoring spring (50) and a tension adjusting ring (52) for adjusting a tension of a restoring spring (50) Wherein the coke oven valve is a coke oven.

2. The elevator according to claim 1, wherein an upper height adjustment groove (32) is formed on the upper surface of the upper cover (30) And the lifting block 40 is assembled to the upper cover 30 so that the lifting block 40 can be vertically adjusted through a plurality of block bolts 40d.

The lifting device according to claim 1, wherein mounting holes (40-1) for receiving lifting balls (41) are formed on both sides of the lifting block (40) And is adapted to receive the elastic force of a spring (43) whose tension is adjusted by a tundish wrench bolt (42) provided outside.

delete

2. The coke oven cock according to claim 1, wherein a surface of the plug (20) is coated with Teflon, and the surface of the sinusoidal groove (24) and the lifting ball (41)