KR102253332B1 - Valve having 3d wave flow type separating trim-stack - Google Patents

Abstract

The present invention relates to a separable trim stack unit for a valve, comprising: a guide groove unit which is an assembly unit and which slides and accommodates and guides a protruding bump formed to protrude on an upper side surface of a lower plate placed on a lower side among a pair of plates piled up on each other to come in contact with each other on a surface, an assembly bump formed on an upper side in an axial direction of the protruding bump in a greater size than the cross-sectional area of the protruding bump, and a protruding bump formed on a lower side surface of an upper plate which is placed on an upper side by being indented and corresponding; a hanging groove unit extended from the guide groove unit toward an inner side of the upper plate to be broader than an inner area of the guide groove unit and to slide and accommodate and guide the corresponding assembly bump; and sealing bars placed between both side surfaces of the protruding bump and both side surfaces inside the guide groove unit for sealing when the assembly bump slides and is inserted into the corresponding hanging groove unit. The present invention is able to, unlike the conventional technologies, configure a cage of a trim stack unit, which reduces the pressure in a valve and guides a flow of a fluid, by piling up a plurality of plates, assemble adjacent plates by sliding them from the sides, improve assembly properties, and temporarily weld an outer side surface of the piled and assembled plates, thereby firmly fix the plates.

Description

Separate trim stack unit for valve {VALVE HAVING 3D WAVE FLOW TYPE SEPARATING TRIM-STACK}

The present invention relates to a separate-type trim stack unit for a valve, and more particularly, a cage of a trim stack unit that guides the flow of fluid while depressurizing inside the valve is constructed by stacking a plurality of plates. It relates to a detachable trim stack unit for valves for improving assembly properties by sliding the plates in the lateral direction, and for fixing the outer surfaces of the assembled plates after being laminated by temporary welding.

In general, a globe valve applied to a water heater of a power plant is a type of water level control valve. That is, the globe valve of the feed water heater serves to maintain a constant amount of fresh water in the condenser by automatically adjusting the opening amount according to the level of fresh water stored in the condenser.

At this time, the globe valve of the feedwater heater is used in the process control system of high-temperature, high-pressure fluid with a pressure of 100 bar or higher and a temperature of 320°C or higher.

Particularly, among the existing globe valves applied to the feed water heater, the trim type globe valve limits the temperature of the working fluid, which falls within the application range of the sealing material, to less than 300°C.

In addition, the conventional trim type globe valve applied to the feed water heater applies a pilot trim type that installs a spring on the plug of the trim to prevent leakage at high temperature and high pressure, or The volume was increased or the shutoff force was increased by using a hydraulic actuator.

As a related technology, it has been proposed in Korean Patent Registration No. 10-1583164 (name: fluid high pressure regulator of power plant control valve, registration date: 2015.12.30.).

The above-described technical configuration is a background technique to aid understanding of the present invention, and does not mean a conventional technique widely known in the technical field to which the present invention pertains.

Existing globe valves are fixed by brazing and fusion bonding adjacent plates by placing a thin nickel plate between the plates forming the trim stack unit by the high-speed flow of fluid and applying heat. There is a problem in that the maintenance cost increases, and there is a problem in that the manufacturing defect of the trim stack unit occurs as the nickel thin plate in a fluid state flows into the flow channel recessed in the surface of the plate.

Therefore, there is a need to improve this.

The present invention was conceived to improve the above problems, and a separate trim stack for valves intended to primarily lose energy of the fluid while changing the flow direction of the fluid supplied into the valve in the vertical direction inside the trim stack unit. Its purpose is to provide a unit.

In addition, the present invention aims to prevent cavitation inside the valve as much as possible by causing fluids to collide with each other in the trim stack unit, thereby secondaryly losing energy of the fluid, and to improve the durability of the valve by minimizing the occurrence of impact noise. It is an object of the present invention to provide a separate trim stack unit for valves.

In addition, the present invention is configured by stacking a cage of a trim stack unit that guides the flow of fluid while decompressing inside the valve by stacking a plurality of plates, and slide assembly between adjacent plates in the lateral direction. The purpose is to provide a separate trim stack unit for valves to reduce maintenance costs by improving, and fixing the outer surfaces by temporary welding after assembly, and allowing the plates to be individually replaced by removing the temporary welding by grinding work. The purpose is to provide a separate trim stack unit for valves to reduce maintenance costs. have.

Separable trim stack unit for a valve according to the present invention; A cage formed by stacking a plurality of flat plate-shaped plates through which the center holes coincide with each other for an interview; An energy reduction channel unit configured to reduce the velocity energy of the fluid by being guided so that the fluid supplied between the stacked plates is sequentially switched in a vertical direction and collides with each other; And an assembly unit for stacking the adjacent plates after slide assembly in a lateral direction.

The assembly unit may include a protruding protrusion protruding from an upper surface of a lower plate located at a relatively lower side of a pair of plates stacked for an interview; An assembly protrusion provided at an upper portion along the axial direction of the protruding protrusion and formed larger than a cross-sectional area of the protruding protrusion; A guide groove portion which is recessed in the lower surface of the upper plate located on the upper side and guides the corresponding protruding protrusion to slide; A locking groove part extending from the guide groove part to the inside of the upper plate and being formed to be wider than the inner area of the guide groove part to guide the slide receiving and guiding the corresponding assembly protrusion; And a sealing bar provided between opposite side surfaces of the protruding protrusion and both inner side surfaces of the guide groove for sealing processing when the assembly protrusion is inserted into the corresponding locking groove.

The assembly portion, along the radial direction of the lower plate, is formed recessed in both surfaces of the protruding protrusion or the inner surface facing the guide groove, and includes a receiving groove for accommodating the sealing bar.

The receiving groove portion is characterized in that the inner surface has a flat shape, the sealing bar is elastically deformable and made of a circular shape in cross section.

The energy reduction channel unit includes: a plurality of inflow allowable spaces formed along an outer edge on an upper surface of a lower plate located at a relatively lower side of the stacked plates to receive a fluid from the outside and open in an outer and upper direction; A switching oil inner space portion disposed on an upper surface of the lower plate to be discontinuously disposed along a set trajectory and formed to be open in an upper direction; A discharge allowable space part formed along the inner edge of the center hole of the lower plate, the direction of which is changed through the inner space part during the conversion oil, and allowing the flowing fluid to be discharged to the center hole; And at least two pairs of the allowable inflow space, the inner space during the conversion oil, and the allowable discharge space are disposed non-contiguously on the lower side of the upper plate located on the upper side of the stacked plates so as to overlap each other, in a vertical direction. It includes a collision allowable space for allowing the flowing fluid to collide with each other.

The stacked plates are characterized in that they form a temporary joint by welding circumferential surfaces in the height direction of the cage to increase the binding force, and the plate is separated separately when the temporary joint is removed.

Each of the stacked plates is characterized in that a recessed portion is formed on a circumferential surface forming the temporary contact portion.

As described above, the separate trim stack unit for a valve according to the present invention, unlike the prior art, changes the flow direction of the fluid supplied into the valve in the vertical direction inside the trim stack unit and primarily loses the energy of the fluid. Can improve the durability of.

In addition, the present invention prevents cavitation inside the valve as much as possible by causing fluids to collide with each other inside the trim stack unit, thereby secondaryly losing energy of the fluid, and further improving the durability of the valve by minimizing the occurrence of impact noise. I can.

In addition, the present invention is configured by stacking a cage of a trim stack unit that guides the flow of fluid while decompressing inside the valve by stacking a plurality of plates, and slide assembly between adjacent plates in the lateral direction. It improves, and after assembling, the outer surfaces are tack-welded to securely fix it, and as the tack-welding is removed by grinding, the plate can be individually replaced, thereby reducing maintenance costs.

1 is an interior view of a valve having a separate trim stack unit for a valve according to an embodiment of the present invention.
2 is a perspective view of a trim stack unit according to an embodiment of the present invention.
3 is an exploded perspective view of a trim stack unit according to an embodiment of the present invention.
4 is a cross-sectional view of a trim stack unit and a valve according to an embodiment of the present invention.
5 is a perspective view showing a plate stacking state of a trim stack unit according to an embodiment of the present invention.
6 is a rear perspective view of a stacked plate according to an embodiment of the present invention.
7 is a rear view of a plate according to an embodiment of the present invention.
8 is a perspective cross-sectional view of a stacked plate according to an embodiment of the present invention.
9 is a cross-sectional view of a stacked plate according to an embodiment of the present invention.
10 is an enlarged perspective view of a main part of an assembly unit according to an embodiment of the present invention.

Hereinafter, an embodiment of a separate trim stack unit for a valve according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is an interior view of a valve having a trim stack unit for a three-dimensional wave floor according to an embodiment of the present invention, and FIG. 2 is a perspective view of a trim stack unit according to an embodiment of the present invention.

3 is an exploded perspective view of a trim stack unit according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view of a trim stack unit and a valve according to an embodiment of the present invention.

5 is a perspective view showing a plate stacking state of a trim stack unit according to an exemplary embodiment of the present invention, FIG. 6 is a rear perspective view of a stacked plate according to an exemplary embodiment of the present invention, and FIG. 7 is an exemplary embodiment of the present invention. It is a rear view of a plate according to an example.

8 is a perspective cross-sectional view of a stacked plate according to an embodiment of the present invention, and FIG. 9 is a cross-sectional view of the stacked plate according to an embodiment of the present invention.

10 is an enlarged perspective view of a main part of an assembly unit according to an embodiment of the present invention.

1 to 10, the valve 10 according to an embodiment of the present invention is used for a feed water heater (not shown) of a power plant, and the body 20, and a trim stack unit stack unit, 100).

The body 20 forms the outer shape of the valve 10 and forms channels 22 open to both sides to guide the flow of fluid having fluidity such as liquid or gas.

At this time, the channel 22 serves to guide the fluid from one side to the other, and can be applied in various shapes.

In particular, the channel 22 may be formed in a straight line inside the body 20, but it is formed approximately along the'S'-shaped trajectory to minimize the impact sound by mounting the trim stack unit 100 and changing the flow direction of the fluid. Can be. Of course, the body 20 can be applied in a variety of shapes and materials.

In addition, the trim stack unit 100 is provided inside the channel 22 of the body 20. Thus, the trim stack unit 100 guides all fluid flowing inside the channel 22 to pass.

In particular, the trim stack unit 100 is provided at a portion bent to change the fluid flow of the channel 22 and serves to regulate the flow of the fluid and control the amount of flow. At this time, the trim stack unit 100 serves to reduce velocity energy by converting the fluid that is introduced and discharged in the vertical direction and flows.

In other words, the trim stack unit 100 is mounted inside the channel 22 to regulate the flow of fluid flowing from one side of the body 20 to the other side, and adjust the flow amount, and reduce the velocity energy of the fluid to reduce the channel ( 22) By preventing cavitation, flashing, erosion, etc. due to high-speed fluid flow inside, it prevents shortening of life due to damage. In addition, the trim stack unit 100 serves to forcibly lower the pressure inside the body 20 to prevent check flow.

Meanwhile, the trim stack unit 100 includes a cage 110, an energy reduction channel unit 120, and an assembly unit 170.

The cage 110 is composed of a plurality of plates 112 provided in a disk shape on a plane. Each plate 112 is stacked while being interviewed. And, each of the plates 112 through the center hole 114 in the same center. Thus, the cage 110 in which the plates 112 are stacked is opened in the vertical direction.

In particular, the fluid flows through the channel 22 of the body 20, flows into the stacked plates 112, falls through the central hole 114, and is discharged.

On the other hand, the cage 110 formed integrally as it is bonded to each other and stacked while being interviewed must be fixed inside the channel 22. This is to avoid being shaken by the fluid flowing at high pressure or to prevent the installation position from being deviated.

To this end, a fixing rib 24 protrudes from the body 20 corresponding to the inner surface of the bent portion of the channel 22. The fixing rib 24 serves to fix the plate 112 of the lowermost layer of the cage 110. The fixing rib 24 is in close contact with the inner surface of the center hole 114 of the lowermost plate 112 or to the edge of the lowermost plate 112. For convenience, the fixing rib 24 is shown to be in close contact with the rim of the plate 112 while supporting the plate 112 of the lowermost layer. Of course, the fixing rib 24 can be deformed into various shapes, and is preferably formed integrally with the body 20.

In addition, the trim stack unit 100 serves to adjust the flow amount of the fluid flowing between the stacked plates 112 and falling.

In detail, a plunger 30 is provided in the center hole 114 opened in the vertical direction of the stacked plates 112. The plunger 30 is in contact with the inner surface of the central hole 114 and is provided to be elevating and descending.

Accordingly, the plunger 30 is connected to an external power transmission element (not shown) to move up and down along the axial direction of the cage 110.

The plunger 30 is raised and lowered inside the center hole 114 of the cage 110, and the flow of the fluid is interrupted or the flow amount is adjusted according to the number of contact with the inner surface of the stacked plate 112.

On the other hand, the energy reduction channel unit 120 guides the fluid to the central hole 114 by repeatedly changing the flow direction of the fluid supplied between the plates 112 stacked on the circumferential surface of the cage 110 in the vertical direction. And, it plays a role of reducing the velocity energy during flow.

That is, when the fluid passes between the stacked plates 112, the flow direction is repeatedly guided in the vertical direction in three dimensions, and the velocity energy is lost as the fluid flows in the direction of the center hole 114.

In addition, the energy reduction channel unit 120 serves to further reduce the kinetic energy of the fluid by guiding the fluid flowing in parallel from both sides to collide at a specific position. After that, the fluid returns to a certain distance and flows in the direction of the corresponding central hole 114 is repeated.

In particular, the energy reduction channel unit 120 is formed of flow paths formed to take the kinetic energy of the fluid as much as possible by instantaneously increasing the flow velocity of the fluid guided to face each other and collide.

In detail, the energy reduction channel unit 120 includes an inflow allowable space part 121, an inner space part 122 during the conversion oil, a discharge allowable space part 123, and a collision allowable space part 124.

For convenience, in FIGS. 5 to 9, the cage 110 shows only a pair of stacked plates 112a and 112b. Thus, among the plates 112a and 112b shown as a pair, a plate located at a relatively lower side is referred to as a lower plate 112a, and a plate located at a relatively upper side is referred to as an upper plate 112b.

At this time, the inflow allowable space 121, the conversion oil inner space 122, and the discharge allowable space 123 are the lower side facing the lower side of the upper plate 112b among a pair of adjacent plates 112a and 112b. It is assumed that it is formed on the upper side of the plate 112a.

And, the collision allowable space part 124 is the upper side so as to face the allowable inflow space part 121, the inner space part 122 and the discharge allowable space part 123 among a pair of adjacent plates 112a and 112b. It is assumed that it is formed on the lower side of the plate 112b.

Of course, the inflow allowable space 121, the conversion oil inner space 122 and the discharge allowable space 123 are formed on the lower side of the upper plate 112b, and the collision allowable space 124 is the lower plate ( 112a) may be formed on the upper side.

The inflow allowable space 121 is formed discontinuously or continuously along the edge of the circumferential surface on the upper side of the lower plate 112a, and is formed to be open in the upper direction and the outer direction toward the upper plate 112b.

Thus, each of the allowable inflow spaces 121 serves to receive fluid from the outside of the cage 110 to the central hole 114. Of course, the number and size of the inflow allowable spaces 121 are not limited. For convenience, the inflow allowable space 121 is shown to be non-continuously formed along the circumferential direction on the upper side of the lower plate 112a.

And, the inner space portion 122 during the conversion oil is formed on the upper surface of the lower plate (112a), from each of the allowable inflow space portion 121 along the set trajectory in the direction of the center hole 114 of the lower plate (112a). It is laid out quickly.

In addition, the inner space portion 122 during the conversion oil is formed to be opened in the upper direction toward the upper plate (112b). Of course, the size, number, and spacing of the inner space portion 122 during the switching oil are not limited.

In addition, the discharge allowable space part 123 is formed continuously or discontinuously along the inner edge of the center hole 114 of the lower plate 112a, and the collision allowable space part 122 and the collision allowable space part 124 during the switching oil It serves to allow the fluid flowing through the discharge to the central hole 114.

That is, along the set trajectory, of the switching oil inner space 122 formed in the lower plate 112a, the switching oil inner space 122 and the discharge allowable space 1223 disposed closest to the corresponding central hole 114 Is connected through the collision allowable space unit 124 to guide the flow of the fluid. Of course, the allowable discharge space portion 123 is not limited to the number and size. For convenience, the discharge allowable space portion 123 is assumed to be formed non-continuously.

On the other hand, the collision allowable space part 124 is formed to be discontinuous on the lower side of the upper plate 112b. At this time, it is assumed that the collision allowable space unit 124 is disposed along the same trajectory as the opposite switching oil inner space unit 122. In particular, the collision allowable space unit 124 serves to deprive of kinetic energy by allowing flowing fluids to collide with each other.

In addition, the collision allowable space unit 124 is overlapped with at least two pairs of the allowable inflow space unit 121, the inner space unit 122 during the conversion oil, and the allowable discharge space unit 123.

In other words, each of the collision allowable spaces 124 is formed to connect a pair of inflow allowable spaces 121 and a pair of inner spaces 122 during the conversion oil, which are arranged side by side and adjacent along a set trajectory, It is formed so as to connect the inner space part 122 during the two pairs of conversion oil by a pair that are arranged side by side and adjacent, and the inner space part 122 and a pair of discharge allowable space parts are arranged side by side and adjacent to each other. It is formed to connect 123.

Therefore, the fluid is allowed to flow in the space part 121, the collision allowable space part 124, the inner space part 122 during the switching oil, the collision allowable space part 124, the inner space part 122 during the switching oil, the collision allowable space part As they flow in the vertical direction in the order of 124 and the discharge allowable space 123, they collide with each other.

As a result, the fluid flows in a three-dimensional direction between the pair of plates 112a and 112b to be interviewed, firstly losing kinetic energy, and secondarily losing kinetic energy as they collide with each other.

In particular, the allowable inflow space 121, the inner space 122 during the conversion oil, the discharge allowable space 123 and the collision allowable space 124 are based on the central hole 114 of the plates 112a and 112b. It shall be arranged radially.

At this time, one plate (112a or 112b) forms an inflow allowable space part 121, an inner space part 122 and a discharge allowable space part 123 on the upper side, and a collision allowable space part ( As 124 is formed, each of the plates 112a and 112b may be thickened to maintain strength.

In order to prevent this, the plates 112a and 112b have a position where the inflow allowable space part 121, the inner space part 122 and the discharge allowable space part 123 are formed, and the collision allowable space part 124. Positions to be formed can be arranged differently.

Meanwhile, the collision allowable space unit 124 includes a guide channel 125 and a bridge channel 126, respectively.

The guide channel 125 selectively overlaps the allowable inflow space 121, the inner space 122 or the discharge allowable space 123 disposed adjacent to each other along the set trajectory of the lower plate 112a, It serves to guide the diverting flow.

In other words, the guide channel 125 is radially non-contiguous with respect to the center hole 114 on the lower side of the upper plate 112b, and is formed in a rectangular groove shape. At this time, each of the guide channels 125 is formed so as to connect one inflow allowable space 121 and one conversion oil inner space 122 disposed adjacent to each other, and a pair of conversion oil inner spaces disposed adjacent to each other. It is formed to connect the portion 122, and is formed to connect one inner space portion 122 and one discharge allowable space portion 123 disposed adjacent to each other.

In addition, the bridge channel 126 connects a pair of guide channels 125 disposed adjacent to the upper plate 112b in the circumferential direction. Accordingly, each of the collision allowable spaces 124 may be formed in the shape of a'diguenja' that opens in the outer (circumferential) direction of the upper plate 112b.

Therefore, the fluid flowing into one side of the guide channel 125 moves along the guide channel 125 and flows into the bridge channel 126 through the bridge channel 126 to one side of the neighboring guide channel 125. It collides with the fluid that is being created.

Thereafter, the fluid flows in a direction opposite to the flow direction and is moved to the inner space 122 or the allowable discharge space 123 during the conversion oil through the other side of each of the guide channels 125.

On the other hand, each of the bridge channels 126 is formed to have a reduced cross-sectional area from both sides connected to the corresponding guide channel 125 toward the center in order to increase the velocity of the fluid flowing from both sides toward the center for collision. <b, see FIG. 7)

Accordingly, the fluids collide with each other in a state in which the flow velocity is increased instantaneously in the bridge channel 126, so that the kinetic energy after the collision can be reduced as much as possible.

In particular, when the bridge channel 126 has the same cross-sectional area, each of the bridge channels 126 is moved from both sides and the collision position is different, so that the plates 112a and 112b may be shaken.

The guide channel 125 forms an impact area 125a having a relatively small cross-sectional area (a) at the center portion so as to be smaller than the cross-sectional area (b) on both sides, so that the fluid is concentrated in the impact area 125a, so that the plate 112a , 112b) is a bar that can be balanced in the force in the radial direction, it can be prevented from shaking.

Of course, the cross-sectional area of the bridge channel 126 having a variable cross-sectional area is not limited.

In addition, the collision allowable space portion 124 formed in each of the stacked plates 112a and 112b may be formed to increase in cross-sectional area toward the fluid flow direction along the axial direction of the matched central hole 114.

Along the direction in which the fluid falls along the plurality of central holes 114, the cross-sectional area of the collision allowable space 124 gradually increases, so that the flow velocity of the fluid decreases toward the lower side of the cage 110, resulting in turbulent flow or impact noise. This can be reduced.

That is, the cross-sectional area (c) of the guide channel 125 of the lower plate 112a is larger than the cross-sectional area (d) of the guide channel 125 of the upper plate 112b. (c>d, FIGS. 2 and 6) Reference)

In addition, the plates 112a and 112b temporarily store the fluid discharged through the discharge allowable space part 123 to be evenly discharged along the central hole part 114 and may form a residual part 127 to guide the overflow.

The remaining portion 127 can be applied in various ways, such as a jaw formed protruding along the edge of the center hole 114 on the upper side of the plates 112a and 112b or a recessed groove.

Accordingly, the fluid flows three-dimensionally, and the velocity energy is lost as much as possible by changing the flow direction and colliding with each other.

Meanwhile, the assembly unit 170 slides and assembles the upper plate 112b in the lateral direction with respect to the adjacent lower plate 112a among the plurality of plates 112 to guide the stacking.

To this end, the assembly portion 170 includes a protruding protrusion 141, an assembly protrusion 172, a guide groove portion 173, a locking groove portion 174, a receiving groove portion 175, and a sealing bar 176.

The protruding protrusion 171 is formed to protrude from the upper surface of the lower plate 112a located at the lower side of the pair of plates 112a and 11b stacked for an interview.

In particular, the protruding protrusion 171 is supposed to be disposed in a straight line along the radial direction from the upper side of the lower plate 112a. Of course, the lower plate 112a does not limit the position at which the protruding protrusion 171 protrudes on the upper side.

Then, the assembly protrusion 172 is provided on the upper portion of the protruding protrusion 171 along the axial direction of the protruding protrusion 171. In addition, the assembly protrusion 172 is formed larger than the cross-sectional area of the protruding protrusion 171. In particular, the assembly protrusion 172 may be formed continuously or discontinuously along the protruding protrusion 171.

At this time, the protruding protrusion 171 and the assembly protrusion 172 may be deformed into various shapes.

In addition, the guide groove 173 is recessed in the lower side of the upper plate 112b, which is located on the upper side of the pair of plates 112a and 11b stacked to be interviewed. So, the guide groove 173 serves to guide the slide receiving the corresponding protrusion 171.

In addition, the locking groove 174 is formed extending from the guide groove 173 to the inside of the upper plate 112b, is formed wider than the inner area of the guide groove 173 to guide the slide receiving the corresponding assembly protrusion 172 . At this time, since the planar area of the assembly protrusion 172 is larger than the cross-sectional area of the guide groove 173, the assembly protrusion 172 is prevented from being separated through the guide groove 173. In addition, the guide groove 173 and the locking groove 174 are formed to be open to both sides along the radial direction of the plate 112. Thus, the lower plate 112a is slid and assembled into the upper plate 112b in the lateral direction of the upper plate 112b.

On the other hand, the sealing bar 176, when the slide is inserted into the locking groove 174 corresponding to the assembly protrusion 172, for sealing treatment, both sides of the corresponding protrusion 171 and the inner both sides of the guide groove 173 It is provided between. Accordingly, leakage of the fluid into the gap between the protruding protrusion 171 and the guide groove 173, which are mutually slide-assembled, is prevented or minimized.

At this time, when the lower plate 112a slides into the upper plate 112b in the lateral direction of the upper plate 112b, the sealing bar 176 is formed outside or the center hole 114 of the upper plate 112b due to mutual friction. Can be disengaged.

To prevent this, a receiving groove portion 175 is provided.

The receiving groove portion 175 is recessed in at least one of both surfaces of the protruding protrusion 171 and the opposite inner surface of the guide groove portion 173 along the radial direction of the lower plate 112a. Thus, by receiving the receiving grooves 175 each receiving the sealing bar 176, the sealing bar 176 seals the gap between the protruding protrusion 171 and the guide groove 173 while being fixed in position.

For convenience, the receiving groove portion 175 is assumed to be recessed in both sides of the protruding protrusion 171. Accordingly, the sealing bar 176 can be easily mounted on the receiving groove 175.

In addition, the receiving groove 175 has a flat inner surface, and the sealing bar 176 is made of a material capable of elastic deformation and has a circular shape in cross section.

Thus, when the lower plate 112a slides into the upper plate 112b, the sealing bar 176 is elastically deformed by pressing the outer surface of the corresponding protruding protrusion 171 and the inner surface of the guide groove 173 And the contact area between the opposing protruding protrusion 171 and the guide groove 173 is increased.

At this time, the number of sealing bars 176 accommodated in one receiving groove 175 is not limited. Of course, the sealing bar 176 can be deformed into various shapes.

In addition, the stacked plates 112 form a temporary joint 152 by welding circumferential surfaces in the height direction of the cage 110 in order to increase the binding force. That is, all of the stacked plates 112 increase mutually binding force by the temporary joints 152 formed by welding the circumferential surfaces of each other. The joint 152 can be applied in various ways, such as soldering.

In addition, the stacked plates 112 can be individually replaced as they are separated separately when the temporary contact portion 152 is removed. The temporary joint 152 may be removed by a grind tool or the like.

In this case, when the temporary contact part 152 protrudes to the outside of the stacked plate 112, the inside of the body 20 may be damaged by the temporary contact part 152.

To prevent this, each of the stacked plates 112 has a recessed portion 154 formed on the circumferential surface forming the temporary contact portion 152. As the temporary contact part 152 is formed in the recessed part 154, it is prevented from protruding outward of the stacked plate 112.

In addition, each of the stacked plates 112 has a plurality of positioning holes 162 that are aligned in the height direction of the cage 110 so as to completely overlap to set the position at which the temporary contact portion 152 is formed.

When the positioning holes 162 of all the stacked plates 112 coincide in a one-to-one correspondence, the plates 112 are stacked in their original positions. That is, when the positioning holes 162 coincide, the depressions 154 are arranged in a straight line in the vertical direction.

In particular, the positioning shaft 164 may be sequentially inserted into the corresponding positioning holes 162 of the slide-assembled plates 112 by the assembly unit 170. Thereby, the plate 112 is completely superimposed.

In addition, the positioning shaft 164 may be removed after the plate 112 is completely overlapped, or may be applied as a bolt or screw clamped to a nut to further enhance the binding force of the stacked plates 112.

When the positioning shaft 164 is removed after the plate 112 is completely overlapped, the positioning hole 162 may be blocked by a jaw inside the body 20. Of course, the lowermost plate 112 of the plates 112 constituting the cage 110 may have the positioning hole 162 formed in a groove shape rather than a hole shape.

In addition, the fluid may leak through the gap between the fitting protrusion 142 and the fitting groove 144, but the flow rate of the fluid that may leak through the gap is significantly Since there are many, most of the fluids tend to flow through the energy reduction channel unit 120.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those of ordinary skill in the field to which the present technology belongs, various modifications and equivalent other embodiments are possible therefrom. I will understand. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

10: valve 20: body
22: channel 24: fixed rib
100: trim stack unit
110: cage 112: plate
114: center hole 120: energy reduction channel part
121: allowable inflow space part 122: inner space part during the conversion oil
123: discharge allowable space part 124: collision allowable space part
125: guide channel 126: bridge channel
152: joint 154: depression
162: positioning hole 164: positioning shaft
170: assembly 171: protrusion
172: assembly protrusion 173: guide groove
174: locking groove 175: receiving groove
176: sealing bar

Claims (6)

A cage formed by stacking a plurality of flat plate-shaped plates through which the center holes coincide with each other for an interview;
An energy reduction channel unit configured to reduce the velocity energy of the fluid by being guided to be guided by the fluid supplied between the stacked plates in a vertical direction and successively changing directions; And
It includes an assembly unit for stacking the adjacent plates after assembling slides in a lateral direction,
The assembly unit may include a protruding protrusion protruding from an upper surface of a lower plate located at a relatively lower side of a pair of plates stacked for an interview;
An assembly protrusion provided at an upper portion along the axial direction of the protruding protrusion and formed larger than a cross-sectional area of the protruding protrusion;
A guide groove portion which is recessed in the lower surface of the upper plate located on the upper side and guides the corresponding protruding protrusion by sliding;
A locking groove part extending from the guide groove part to the inside of the upper plate and being formed to be wider than the inner area of the guide groove part to guide the slide receiving and guiding the corresponding assembly protrusion; And
Separable trim stack unit for a valve, characterized in that it comprises a sealing bar provided between both sides of the facing protrusion and both inner sides of the guide groove for sealing when the assembly protrusion is inserted into the corresponding locking groove for sealing. .
The method of claim 1,
The assembly unit, along the radial direction of the lower plate, is recessed in both surfaces of the protruding protrusion or the inner surface facing the guide groove, and a detachable type for valve, characterized in that it comprises a receiving groove for accommodating the sealing bar Trim stack unit.
The method of claim 2,
The receiving groove portion has a flat inner surface,
The sealing bar is elastically deformable and a detachable trim stack unit for a valve, characterized in that it has a circular shape in cross section.
The method of claim 1, wherein the energy reduction channel unit,
A plurality of inflow allowable spaces formed along an outer edge on an upper surface of a lower plate located at a relatively lower side of the stacked plates to receive fluid from the outside and open in an outer and upper direction;
A switching oil inner space portion disposed on an upper surface of the lower plate to be discontinuously disposed along a set trajectory and formed to be open in an upper direction;
A discharge allowable space part formed along the inner edge of the center hole of the lower plate, the direction of which is changed through the inner space part during the conversion oil, and allowing the flowing fluid to be discharged to the center hole; And
It is disposed discontinuously on the lower side of the upper plate located on the upper side of the stacked plates so as to overlap with at least two pairs of the allowable inflow space part, the inner space part during the conversion oil, and the discharge allowable space part, and flows in the vertical direction. Separable trim stack unit for valves, characterized in that it comprises a collision allowable space for allowing the fluid to collide with each other.
The method of claim 4,
The laminated plates form a temporary joint by welding circumferential surfaces in the height direction of the cage to increase binding force,
The plate is a detachable trim stack unit for valves, characterized in that the plate is separately separated when the temporary contact portion is removed.
The method of claim 5,
Each of the stacked plates has a recessed portion formed on a circumferential surface forming the temporary contact portion.

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