KR200385686Y1 - A cutoff valve for high pressure fluid - Google Patents

Abstract

The disclosed subject matter is to improve the responsiveness under the high pressure fluid pressure action state, to maximize the valve sealing effect and to effectively block the high pressure fluid, and to prevent the pulsation caused by the instantaneous pressure release of the fluid.

In order to realize this, in the present invention, a valve body formed by forming a flange portion in each side of the fluid inlet, outlet, and forming a divided fluid passage in the valve body; A valve body which opens / closes in contact with a seating surface installed in the divided fluid passage; An actuator for controlling driving of the valve body; Provided is a high pressure fluid shutoff valve comprising a pair of damping portions provided at both ends of the valve body for selectively communicating with the divided fluid passage.

Therefore, the present invention is intended to absorb and mitigate the instantaneous pressure generated when the high-pressure water is momentarily shut off, thereby to compensate for the pressure, and to achieve a symmetrical fluid flow by the split channel.

Description

A cutoff valve for high pressure fluid

The present invention relates to a high pressure fluid shut-off valve, and more specifically, to control the flow of fluid in a pipe, and easy to open and close to control the flow of high pressure even with a small force of the actuator, compensation of the differential pressure and The present invention relates to a high pressure fluid shutoff valve capable of instantaneously absorbing and releasing fluid pressure.

The valve is for controlling the flow rate, flow rate, pressure, etc. of the fluid flowing in the pipe, and can be classified into a stop valve, a slew valve, a check valve, and a pressure reducing valve according to the purpose.

The stop valve is for stopping the flow of fluid, which includes a globe valve and an angle valve, for example, a globe valve forms a flange portion with a fluid inlet and outlet, respectively on both sides of the valve body, the inside of the valve body A valve plate is formed on the horizontal line, and a valve plate for opening and closing the through hole is provided, and an O-ring or a seal-ring such as a gasket and a teflon is inserted, as well as the valve plate. As it is connected to the handle and the operating rod and lifted when the handle is rotated, it is opened and closed.

On the other hand, the gate valve that can be classified as a kind of stop valve, as disclosed in the Republic of Korea Patent Office Utility Model Registration No. 20-0218269, has a body that is connected to the pipe in both sides, the upper plate and the lower plate is inserted into the gasket It relates to a gate valve coupled to the body under a state, the blocking portion connected to the operating rod is slidably provided in the body.

In particular, in the gate valve as described above, a passage is formed in the lower portion of the intermediate plate on both sides of which the inclined surface is formed, and the recess is formed, and the support is installed on both sides thereof, and one side of the side plate is formed as the protrusion. In addition, a passage is formed at the bottom thereof, and the stop portion is coupled to the support and both ends are coupled to the tangerine / side plates coupled to both sides of the intermediate plate, respectively. It is provided with the stopper etc. which are provided in the.

Conventional gate valve is to open and close the flow path as the plate-shaped valve body (gate) is lifted in the body (valve body), the gate need to be designed with a circular cross section to improve the workability and increase the processing precision have.

In addition, it is necessary to ensure sufficient encapsulation so as not to be scratched by hard particles such as sand mixed in the fluid, and by adopting an elastomeric coating, it is possible to smoothly open and close the operation by reducing the contact friction that may be generated. There is also a need.

In order to meet the various needs as described above, there is a gate valve No. 1985-0002548 in the Utility Model Publication of Korea Patent Office.

As shown in FIG. 1, the gate valve is formed in a cylindrical shape in which the valve box 105 and the valve body 106 which are installed through the flow passage 102 of the valve body 100 are narrowed slightly downward. The valve box 105 and the valve body 106 are raised and lowered in the pipe portion 108 extending upward of the 100.

In addition, the valve body 106 as described above is fastened to the threaded rod 110, and the threaded rod 110 passes through the tubular cover 112 and is coupled to the handle 114, thereby turning the handle 114. At this time, the valve box 105 and the valve body 106 are lifted from the position of the flow path 102 of the valve body 100 to the position of the pipe portion 108 by the treatment with the screw rod 110.

However, the conventional gate valves as described above have a problem in that the contact surface is damaged or the seal is broken due to friction at the contact surface during opening and closing, thereby lowering the sealing efficiency, and thus air or foreign matter is introduced into the valve.

In addition, there is a problem that the fluid is adsorbed / accumulated on the inner surface of the valve or the contact surface with the working plate, thereby preventing the complete sealing of the valve plate and generating a pulsation by not relieving the instantaneous pressure of the fluid.

The present invention is devised to meet the conventional needs as described above, the object of the present invention is to improve the responsiveness under the high pressure fluid pressure action state, maximize the valve sealing effect and efficient blocking of high pressure fluid, and It is an object of the present invention to provide a high-pressure fluid shutoff valve that can prevent pulsation caused by the release of the instantaneous pressure of a fluid.

Other objects and advantages of the present invention will be described below and will be appreciated by the embodiments of the present invention. Furthermore, the objects and advantages of the present invention can be realized by the means and combinations indicated in the claims.

In order to achieve the above object, the present invention is a valve body formed by forming a flange portion in each side of the fluid inlet, outlet, and forming a divided fluid passage in the valve body; A valve body which opens / closes in contact with a seating surface installed in the divided fluid passage; An actuator for controlling driving of the valve body; Provided is a high pressure fluid shutoff valve comprising a pair of damping portions provided at both ends of the valve body for selectively communicating with the divided fluid passage.

The valve body includes a pair of dividing passages, which are divided and drilled from both sides of the fluid inlet side, and a pair of opposing fluids communicating from the valve body central space formed so that the valve body can be lifted and lowered in an intersecting state. A main body having a furnace and confluence passages formed to communicate with the fluid outlet from the central space of the valve body; A pair of body heads having respective connection passages for communicating the divided passages and the joining passages of the valve body and mounted on the corresponding side of the valve body; A through hole opened and closed by the valve body is formed, and includes a pair of seating surfaces provided to be interposed between the valve body and the body head at a portion of the fluid communicating from the valve body central space. Is done.

The valve body may include a valve member installed at a center of the valve body so as to be lifted and lowered in a space formed to communicate with a divided fluid passage; A connection member disposed to be orthogonal to the center upper side of the valve member to connect the valve member to the actuator; Of the position disposed in line with the connecting member. It comprises a guide means that is partially connected to the lower center of the valve member.

The guide means is fastened to the lower portion of the valve body, the guide tube body is disposed through the center of the lower body coupled to the valve body; It is coupled to the sliding guide tube body, the upper end is made of an insertion member extending from the lower center of the valve body.

Each of the pair of damping units may include a pair of spring housings which are press-fitted in a space formed inside each of the valve ends; Dish spring members embedded in each of the spring housing; It comprises a pair of valve disks are pushed by the force supported by each of the dish spring members to be selectively in contact with the seating surface, and perforated to form a momentary fluid inflow.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to the ordinary or dictionary meanings, and the inventors will appropriately introduce the concept of terms in order to best explain their invention. Based on the principle that it can be defined in a simple manner, it should be interpreted as meanings and concepts corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be water and variations.

2 is an external perspective view of the high pressure fluid shutoff valve according to the present invention, FIG. 3 is an exploded perspective view of the high pressure fluid shutoff valve according to the present invention, and FIG. 4 is a part for showing an operating state of the high pressure fluid shutoff valve according to the present invention. And schematic plan view.

As shown in the present invention, the valve body (2) is connected to the conduits so that the fluid flows in the horizontal direction, the contact surface and spaced apart from the seating surface (24) installed in the inner fluid passage of the valve body (2) It consists of an opening and closing valve body 30, an actuator 14 for controlling the driving of the valve body 30, and a pair of damping parts provided at both ends of the valve body 30.

That is, the valve body (2) was formed with the flange portion (6) (8) having the fluid inlet and outlet, respectively on both sides thereof, the partition fluid passage (22a) (22b) was formed therein, the partition fluid The seating surface 24 is provided in the furnace 22a, 22b, and is provided with the valve body 30 which opens and closes at such a seating surface 24 at contact / separation.

Meanwhile, the valve body 30 may be driven by an actuator 14 such as a solenoid valve, and the damping part may be configured to selectively communicate the fluid passages 22a and 22b of the valve body 2. The valve body 30 is provided at both ends.

In addition, the valve body 30 is provided with a valve member 30 which is installed at a center of the valve body 2 so as to be able to move up and down in a space formed to communicate with the divided fluid passages 22a and 22b. And a connecting member (36) arranged to be orthogonal to the center upper side of the member (30) to connect the valve member (30) to the actuator (14) and in a position disposed in line with the connecting member (36). It comprises a guide means that is partially connected to the lower center of the valve member (30).

The guide means as described above is fastened to the lower portion of the valve body 2, the guide pipe body is disposed through the center of the lower body 4 is coupled to the valve body 2, and coupled to the sliding movement, The upper end is composed of insertion members 38 and 39 extending from the lower center of the valve body 30 described above.

The valve body 2 has a pair of divided passages 20, a pair of fluid passages 22a and 22b facing each other and a confluence passage which is opened so as to communicate with the fluid outlet from the central space of the valve body 2. (Omitted by reference numerals) includes a main body portion 2, a pair of body heads 10 and 12 and a pair of seating surfaces 24.

That is, the body body 2 has a pair of dividing passages 20, which are divided and drilled from both sides of the fluid inlet side, and the valve body is formed so that the valve body 30 can be elevated in a state in which the valve body 30 is laid down. (2) A pair of opposing fluid passages 22a and 22b communicating from the central space and a confluence passage (fluid outlet) are formed so as to communicate with the fluid outlet from the central space of the valve body 2.

In addition, the respective connecting passages for communicating the divided passages and the joining passages of the valve body 2 are formed, and a pair of valve covers 10 mounted on the corresponding side surfaces of the valve body 2 ( 12) is provided.

In addition, the opening and closing through the valve body 30 is formed in a form that is opened, the valve body (2) and the valve cover (10) in the fluid communication portion from the central space of the valve body (2) ( It is provided so that the seating surface 24 is interposed between 12).

Each of the pair of damping parts may include plate spring members S1 and S2 embedded in a pair of spring housings 40 that are press-fitted into a space formed inside each of both ends of the valve member 30. And a pair of valve discs 32 and 34 which are pushed by the force supported by the respective force and selectively contact with the corresponding seating surface 24, and are formed to be perforated so that instantaneous fluid inflow is achieved.

According to the present invention as described above, the connecting member 36 and the valve body 30 are elevated by the driving force of the actuator 14, thereby causing the damping portions at both ends of the valve body 30 to open the opening hole of the seating surface 24. By opening and closing, the fluid flow through the pair of dividing passages 20 and the fluid passages 22a and 22b is interrupted.

If the valve body 30 is raised to cause the damping portions at both ends thereof to open the opening holes of the seating surface 24, the fluid flows through the fluid outlet and the inlet of the flanges 6 and 8. On the contrary, if the valve body 30 is lowered to cause the damping portions at both ends thereof to close the opening holes of the seating surface 24, the fluid flow through the fluid outlet and the inlet of the flange portions 6 and 8 is blocked. The fluid pressure is momentarily reduced by the action of the damping portion, and the impact force due to the high-pressure fluid blockage is not only absorbed and relaxed, but also the occurrence of pulsation is prevented.

As described above, the high pressure fluid shutoff valve according to the present invention provides the following effects.

First, it has a useful effect of improving response in the operating conditions of high pressure and high speed fluids, maximizing valve sealing effect, efficient blocking of high pressure and high speed fluids, and preventing pulsation caused by the momentary pressure drop of the fluid. to provide.

That is, the present invention is to interrupt the high pressure water supplied to remove the scale generated on the plate surface in the steel mill hot rolling process, to absorb and mitigate the instantaneous pressure generated when the high pressure water is momentarily blocked, thereby compensating the pressure. Let this be done.

Second, the symmetrical fluid flow is made by the split channel, thereby maintaining the lifting balance to prevent the eccentric force, structurally stable to extend the life and to maintain a uniform sealing force.

Third, since the valve members are perforated, the momentary high pressure can be further reduced and absorbed, and the pressure on both sides of the valve members can be equalized quickly to prevent the occurrence of one-sided sliding of the valve members, reduce friction, and seating surface. It is also possible to prevent leakage of high pressure water in advance by increasing the adhesion to the furnace.

Fourth, even the small force of the actuator is easy to open and close the action to interrupt the high-pressure fluid flow, it is possible to expect a firm sealing effect.

Fifth, the oil tightness of the valve seat is maintained by the reverse pressure effect by the orifice and the plate spring, and the valve seat is symmetrically mirrored, so the contact pressure is small, but there is an advantage of maintaining oil tightness by surface compression.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the appended claims.

1 is a cross-sectional view showing a conventional gate valve configuration and internal structure,

2 is an external perspective view of the high pressure fluid shutoff valve according to the present invention;

3 is an exploded perspective view of the high pressure fluid shutoff valve according to the present invention;

4 is a partial and schematic plan cross-sectional view for showing the operating state of the high-pressure fluid shut-off valve according to the present invention.

Explanation of symbols on main parts of the drawing

2: Valve body 6,8: Flange part

10,12: valve cover 14: actuator

22a, 22b: divided fluid 24: seating surface

30: valve body 36: connecting member

40: spring housing S1, S2: plate spring member

32,34: valve disc

Claims (5)

A valve body formed on both sides thereof with flange portions having fluid inlets and outlets formed therein, and a divided fluid passage formed therein; A valve body which opens / closes in contact with a seating surface installed in the divided fluid passage; An actuator for controlling driving of the valve body; And a pair of damping portions provided at both ends of the valve body for selectively communicating with the divided fluid passage. The method of claim 1, wherein the valve body, A pair of dividing passages which are divided and drilled on both sides from the fluid inlet side, and a pair of opposing fluids communicating from a valve body central space formed so that the valve body can be lifted and lowered in the transverse state, and the valve body A body part having confluence passages formed therein so as to communicate with the fluid outlet from the central space; A pair of body heads having respective connection passages for communicating the divided passages and the joining passages of the valve body and mounted on the corresponding side of the valve body; A through hole opened and closed by the valve body is formed, and includes a pair of seating surfaces provided to be interposed between the valve body and the body head at a portion of the fluid communicating from the valve body central space. High pressure fluid shut-off valve, characterized in that made. The method of claim 1, wherein the valve body, A valve member installed at the center of the valve body so as to be lifted and lowered in a space formed to communicate with the divided fluid passage; A connection member disposed to be orthogonal to the center upper side of the valve member to connect the valve member to the actuator; Of the position disposed in line with the connecting member. High pressure fluid shut-off valve characterized in that it comprises a guide means that is connected to the lower portion of the valve member center. The method of claim 3, wherein the guide means, A guide tube which is fastened to the lower portion of the valve body and is disposed through the center of the lower body coupled to the valve body; A high pressure fluid shut-off valve is coupled to the guide pipe body so as to slide, the upper end is made of an insertion member extending from the lower center of the valve body. The method of claim 1, wherein each of the pair of damping units, A pair of spring housings which are press-fitted into spaces formed inside of each of the valve ends; Dish spring members embedded in each of the spring housing; High pressure fluid blocking, characterized in that it comprises a pair of valve disks which are pushed by the force supported by each of the dish spring members to be selectively in contact with the corresponding seating surface, and perforated to form a momentary fluid inflow. valve.