KR20180045248A - Emergency valve unit of valve assembly - Google Patents

Abstract

The present invention relates to an emergency valve unit of a valve assembly, including a valve and an actuator to provide driving force to the valve. According to the present invention, the emergency valve unit comprises: an emergency valve unit connected to an actuator, and having first and second flow paths connected to an external fluid supply source to alternatively supply and discharge a fluid with respect to the actuator; an opening/closing unit disposed on the first and second flow paths to selectively open/close a fluid flowing path between the fluid supply source and the actuator; and an emergency plug disposed on the first and second flow paths between the actuator and the opening/closing unit, and connected to an emergency pump to supply the fluid to the actuator through the first or second flow path. Accordingly, the fluid is able to be supplied and discharged through the emergency plug without disconnecting the fluid supply source and the actuator in emergency of a valve assembly, thus providing effects capable of ensuring operation reliability of the actuator in emergency and reducing time required for maintenance.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an emergency valve unit for a valve assembly,

The present invention relates to an emergency valve unit of a valve assembly, and more particularly, to an emergency valve unit of a valve assembly capable of providing fluid to an actuator that provides a driving force to the valve in an emergency situation.

Generally, an actuator is typically referred to as a prime mover operated by electricity, hydraulic pressure, compressed air, or the like, and usually refers to a device that performs mechanical operation using fluid energy (movable energy). These actuators are largely classified into pneumatic, hydraulic, and electric, and are mainly used for small displacement devices such as electronic pumps or valves used in machinery.

Here, an actuator used for driving a pump, a valve, or the like controls a pump or a valve by switching the motion of the piston to a rotational motion or a linear motion so as to open and close the valve by using a piston rod operated by pressure. Further, the actuator is constituted so that the motion of the piston can be effectively rotated or linearly moved to control the pump or the valve.

As described above, in general, the actuator that provides the driving force to the valve is driven by the pressure according to the supply of the fluid connected to the outside. That is, the valve is operated in conjunction with the driving of the piston in accordance with the pressure of the fluid supplied to the actuator.

However, in the event of a failure or an emergency situation of a fluid supply source supplying a fluid to a conventional actuator, the connection between the actuator and the fluid supply source is released and the emergency pump is connected to provide pressure to the actuator, There is a problem that the required time is increased together.

Japanese Patent Application Laid-Open No. 2014-040909; Emergency hydraulic source device and emergency driving circuit using this hydraulic source device

SUMMARY OF THE INVENTION It is an object of the present invention to provide an emergency valve unit of a valve assembly improved in structure so that fluid can be supplied to an actuator without releasing a connection between a conventional actuator and a fluid supply source in an emergency situation.

According to the present invention, there is provided an emergency valve unit of a valve assembly having a valve and an actuator for providing a driving force to the valve according to the present invention, the emergency valve unit being connected to the actuator and connected to an external fluid supply source, An emergency valve unit provided with first and second flow paths for alternately supplying and discharging the fluid; and an opening / closing unit disposed on the first and second flow paths to selectively open / close a flow path of the fluid between the fluid supply source and the actuator. And an emergency plug disposed on the first and second flow paths between the actuator and the opening and closing part and connected to the emergency pump to supply the fluid to the actuator through the first or second flow path. And a valve unit.

The apparatus may further include a plug opening / closing part disposed in the emergency plug for selectively opening and closing the emergency plug and the first and second flow paths.

Here, the plug opening / closing part may open between the emergency plug and the first and second flow paths when the flow path of the fluid between the fluid supply source and the actuator is closed by the opening / closing part.

When the flow path of the fluid between the fluid supply source and the actuator is closed by the opening / closing part, the flow of the fluid circulating between the fluid supply source and the actuator can be blocked.

The fluid can be supplied from the emergency pump connected to the emergency plug to the actuator when the actuator is communicated with the first and second flow paths by the plug opening and closing part.

Wherein the opening / closing portion includes: a first opening and closing portion disposed on the first flow path and selectively passing and blocking the flow of the fluid on the first flow path; and a second opening and closing portion disposed on the second flow path, And a second opening and closing part for selectively passing and blocking the second opening and closing part.

The emergency plug is disposed at one side of the emergency valve section and is disposed at the other side of the emergency valve section facing the first emergency plug and communicating with the first flow path between the actuator and the first opening and closing section And a second emergency plug communicating with the second flow path between the actuator and the second opening and closing part.

Wherein the plug opening / closing part includes: a first plug opening / closing part disposed in the first emergency plug and opening the first flow path between the emergency pump and the actuator when connected to the emergency pump; And a second plug opening / closing part for opening the second flow path between the emergency pump and the actuator when the second plug is opened.

The first emergency plug and the second emergency plug are alternately connected to the emergency pump so that fluid can be supplied from the emergency pump to the actuator so that the valve is opened or closed.

The fluid includes air, and when the emergency pump is connected to one of the first emergency plug and the second emergency plug, air is discharged to the other one when the air is supplied to the actuator.

The details of other embodiments are included in the detailed description and drawings.

The effect of the emergency valve unit of the valve assembly according to the present invention is that the fluid can be supplied and discharged through the emergency plug without disconnecting the fluid source and the actuator when the valve assembly is in an emergency, And maintenance time can be saved.

1 is a front view of a valve assembly and an emergency valve unit according to an embodiment of the present invention;
Fig. 2 is a top view of the valve assembly and the emergency valve unit shown in Fig. 1,
Fig. 3 is a right side view of the valve assembly and the emergency valve unit shown in Fig. 1,
4 is a front view of an emergency valve unit according to an embodiment of the present invention;
Fig. 5 is a plan view of the emergency valve unit shown in Fig. 4,
Fig. 6 is a right side view of the emergency valve unit shown in Fig. 4,
7 is a circuit diagram of an emergency valve unit according to an embodiment of the present invention,
8 is a first operational perspective view of a valve assembly and an emergency valve unit according to an embodiment of the present invention,
9 is a second operational perspective view of a valve assembly and an emergency valve unit according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings as to the emergency valve unit of the valve assembly.

Prior to the description, it is to be noted that the fluid used in the emergency valve unit of the valve assembly according to the embodiment of the present invention uses pneumatic pressure in which air is used, but hydraulic pressure in which oil is used is not limited to pneumatic pressure.

Accordingly, in the emergency valve unit of the valve assembly according to the embodiment of the present invention, a pneumatic pump is used as the emergency pump, but a hydraulic pump can be used when hydraulic pressure is used.

FIG. 1 is a front view of a valve assembly and an emergency valve unit according to an embodiment of the present invention, FIG. 2 is a plan view of the valve assembly and the emergency valve unit shown in FIG. 1, And a right side view of the valve unit.

1 to 3, an emergency valve unit (hereinafter referred to as an emergency valve unit) 10 of a valve assembly 1000 according to an embodiment of the present invention includes an emergency valve unit 100, an opening / closing unit 300 And an emergency plug 500. Further, the emergency valve unit 10 according to the embodiment of the present invention further includes a plug opening and closing part 700. [

The emergency valve portion 100 is connected to the actuator 1400 and is connected to an external fluid supply source 1 (see FIG. 7) to alternately supply and discharge fluid to and from the actuator 1400. Here, air supplied to the actuator 1400 through the emergency valve portion 100 and discharged from the actuator 1400 is air. The emergency valve unit 100 includes a body 120, a first flow path 140, and a second flow path 160.

The body 120 is arranged to communicate with a line through which fluid is supplied to the actuator 1400 and fluid is discharged from the actuator 1400. The first flow path 140 and the second flow path 160 are formed in the body 120 and connected to the fluid line of the actuator 1400. The first flow path 140 and the second flow path 160 are connected to an external fluid supply source 1 to form a flow path for the fluid to be supplied to and discharged from the actuator 1400. The first flow path 140 and the second flow path 160 of the embodiment of the present invention each form a flow path for the fluid to open and close the valve 1200, but may be used alternately without limitation. That is, the first flow path 140 forms a fluid discharge path from the actuator 1400 to the fluid supply source 1 for the closing operation of the valve 1200, and the second flow path 160 opens the valve 1200 The fluid supply path from the fluid supply source 1 to the actuator 1400 can be formed.

The first passage 140 includes a first main passage 142 (see FIG. 7) and a first emergency passage 144 (see FIG. 7). The first main flow path 142 interconnects the supply lines of the fluid source 1 and the actuator 1400. The first emergency passage 144 is bypassed in the first main passage 142 and connected to the emergency pump 3 (see Figs. 8 and 9) to supply the fluid from the emergency pump 3 to the actuator 1400 .

The second flow path 160 includes a second main flow path 162 (see FIG. 7) and a second emergency flow path 164 (see FIG. 7). The second main flow path 162 interconnects the discharge lines of the fluid source 1 and the actuator 1400. The second emergency passage 164 is bypassed in the second main passage 162 and connected to the emergency pump 3 to supply the fluid from the emergency pump 3 to the actuator 1400.

Here, the first emergency passage 144 is used as a flow passage for supplying the fluid to the actuator 1400 when the fluid is supplied from the emergency pump 3, and the fluid from the emergency pump 3 flows through the second emergency passage 164, And is used as a flow path for discharging the fluid from the actuator 1400 when supplied with the fluid. On the other hand, the second emergency passage 164 is used as a flow passage for supplying the fluid to the actuator 1400 when the fluid is supplied from the emergency pump 3, and the fluid from the emergency pump 3 flows through the first emergency passage 144, And is used as a flow path for discharging the fluid from the actuator 1400 when supplied with the fluid. The detailed description will be given below in the operation process of the emergency valve unit 10 according to the embodiment of the present invention.

Fig. 4 is a front view of the emergency valve unit according to the embodiment of the present invention, Fig. 5 is a plan view of the emergency valve unit shown in Fig. 4, and Fig. 6 is a right side view of the emergency valve unit shown in Fig.

4 to 6, the opening and closing part 300 is disposed on the first flow path 140 and the second flow path 160 so that the flow path of the fluid between the fluid supply source 1 and the actuator 1400 And is selectively opened and closed. The opening and closing part 300 is provided with a fluid passage between the fluid source 1 and the actuator 1400 when the fluid is circulated normally between the fluid source 1 and the actuator 1400 Open. On the other hand, the opening and closing part 300 is provided with the fluid between the fluid supply source 1 and the actuator 1400 when the fluid is circulating between the fluid supply source 1 and the actuator 1400, Lt; / RTI > Specifically, the opening / closing part 300 closes the fluid path between the fluid source 1 and the actuator 1400 so that the fluid can be supplied to the actuator 1400 through the emergency pump 3 in an emergency situation.

The opening and closing part 300 of the present invention includes a first opening and closing part 320 and a second opening and closing part 340. The first opening and closing part 320 is disposed on the first flow path 140 to selectively pass and block the flow of the fluid on the first flow path 140. The second opening and closing part 340 is disposed on the second flow path 160 to selectively pass and block the flow of the fluid on the second flow path 160. The first opening and closing part 320 closes the first flow path 140 between the fluid supply source 1 and the actuator 1400 for the opening operation of the valve 1200 in an emergency , The second opening and closing part 340 closes the second flow path 160 between the fluid source 1 and the actuator 1400 for the closing operation of the valve 1200 in an emergency. Of course, the first opening and closing part 320 and the second opening and closing part 340 may be used to alternately open and close the valve 1200.

Next, the emergency plug 500 is disposed on the first flow path 140 and the second flow path 160 between the actuator 1400 and the opening / closing part 300. The emergency plug 500 is connected to the emergency pump 3 and supplies the fluid to the actuator 1400 through the first flow path 140 or the second flow path 160. In one embodiment of the present invention, the emergency plug 500 supplies fluid to the actuator 1400 for the open operation of the valve 1200 via the first flow path 140. On the other hand, the emergency plug 500 supplies the fluid to the actuator 1400 for the closing operation of the valve 1200 through the second flow path 160.

The emergency plug (500) of the present invention includes a first emergency plug (520) and a second emergency plug (540). The first emergency plug 520 is disposed on one side of the emergency valve part 100 and communicates with the first flow path 140 between the actuator 1400 and the first opening and closing part 320. The second emergency plug 540 is disposed on the other side of the emergency valve part 100 and communicates with the second flow path 160 between the actuator 1400 and the second opening and closing part 340.

Specifically, the first emergency plug 520 is connected to the emergency pump 3 to supply fluid to the actuator 1400 for opening operation of the valve 1200. [ The second emergency plug 540 is connected to the emergency pump 3 to supply fluid to the actuator 1400 for closing operation of the valve 1200. The first emergency plug 520 discharges the fluid from the actuator 1400 when the fluid is supplied through the second emergency plug 540 and the second emergency plug 540 discharges the fluid from the first emergency plug 520, And discharges the fluid from the actuator 1400 when the fluid is supplied through the actuator 1400.

The plug opening and closing part 700 is disposed in the emergency plug 500 to selectively open and close the emergency plug 500 and the first flow path 140 and between the emergency plug 500 and the second flow path 160. The plug opening and closing part 700 establishes communication between the emergency plug 500 and the first flow path 140 and between the emergency plug 500 and the second flow path 160 in an emergency.

The plug opening and closing part 700 includes a first plug opening and closing part 720 and a second plug opening and closing part 740 as one embodiment of the present invention. The first plug opening and closing part 720 is disposed in the first emergency plug 520 and opens the first flow path 140 between the emergency pump 3 and the actuator 1400 when connected to the emergency pump 3. Of course, the first plug opening / closing part 720 closes the first emergency plug 520 and the first flow path 140 in a normal situation.

The second plug opening and closing part 740 is disposed in the second emergency plug 540 and opens the second flow path 160 between the emergency pump 3 and the actuator 1400 when the second plug opening and closing part 740 is connected to the emergency pump 3. Of course, the second plug opening / closing part 740 closes the second emergency plug 540 and the second flow path 160 in a normal situation.

7 is a circuit diagram of an emergency valve unit according to an embodiment of the present invention, FIG. 8 is a first operating perspective view of a valve assembly and an emergency valve unit according to an embodiment of the present invention, and FIG. Fig. 2 is a second operational perspective view of a valve assembly and an emergency valve unit according to the present invention.

Hereinafter, the operation of the emergency valve unit 10 according to the embodiment of the present invention will be described.

First, as shown in FIG. 8, the operation procedure for opening operation of the valve 1200 is as follows.

First, the first opening and closing part 320 is operated to close the first flow path 140 connecting the fluid supply source 1 and the actuator 1400. Then, the emergency pump 3 and the first emergency plug 520 are connected. The first plug opening and closing part 720 is operated to communicate the first emergency plug 520 and the first flow path 140 with each other. And provides the fluid from the emergency pump 3 to the first emergency plug 520.

Then, the fluid supplied to the first emergency plug 520 is supplied to the cylinder 1440 of the actuator 1400 as 'A', and the piston 1420 is linearly moved by the pressure of the fluid. The position indicator 1460 rotates counterclockwise in accordance with the linear movement of the piston 1420 and the valve 1200 connected to the axis of the position indicator 1460 in conjunction therewith performs an opening operation.

Meanwhile, the fluid supplied to the first emergency plug 520 and provided to the actuator 1400 is discharged through the second emergency plug 540 like 'B'.

Second, as shown in FIG. 9, the operation procedure for opening operation of the valve 1200 is as follows.

First, the second opening and closing part 340 is operated to close the second flow path 160 connecting the fluid supply source 1 and the actuator 1400. Then, the emergency pump 3 and the second emergency plug 540 are connected. The second plug opening and closing part 740 is operated to communicate the second emergency plug 540 and the second flow path 160 with each other. And provides the fluid from the emergency pump 3 to the second emergency plug 540.

Then, the fluid supplied to the second emergency plug 540 is supplied to the cylinder 1440 of the actuator 1400 as 'B', and the piston 1420 is linearly moved by the pressure of the fluid. The position indicator 1460 rotates in the clockwise direction in accordance with the linear movement of the piston 1420 and the valve 1200 connected to the axis of the position indicator 1460 works in conjunction therewith to perform the closing operation.

Meanwhile, the fluid supplied to the second emergency plug 540 and provided to the actuator 1400 is discharged through the first emergency plug 520 as 'A'.

Accordingly, since the fluid can be supplied and discharged through the emergency plug without releasing the connection between the fluid supply source and the actuator when the valve assembly is in an emergency, it is possible to secure the operation reliability of the actuator in the event of an emergency, have.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, . Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Emergency valve unit 140: First flow path
160: second flow path 300: opening / closing part
320: first opening and closing part 340: second opening and closing part
500: Emergency plug 520: First emergency plug
540: second emergency plug 700: plug opening / closing section
720: first plug opening and closing part 740: second plug opening and closing part

Claims (10)

An emergency valve unit of a valve assembly having a valve and an actuator for providing a driving force to the valve,
An emergency valve portion connected to the actuator and connected to an external fluid supply source, the emergency valve portion having first and second flow paths for alternately supplying and discharging fluid to and from the actuator;
An opening and closing unit disposed on the first and second flow paths for selectively opening and closing a flow path of the fluid between the fluid supply source and the actuator;
And an emergency plug disposed on the first and second flow paths between the actuator and the opening and closing part and connected to the emergency pump to supply the fluid to the actuator through the first or second flow path. Emergency valve unit.
The method according to claim 1,
Further comprising a plug opening / closing part disposed in the emergency plug for selectively opening and closing between the emergency plug and the first and second flow paths.
3. The method of claim 2,
Wherein the plug opening / closing portion opens between the emergency plug and the first and second flow paths when the flow path of the fluid between the fluid supply source and the actuator is closed by the opening / closing portion.
The method of claim 3,
Wherein when the flow path of the fluid between the fluid supply source and the actuator is closed by the opening / closing part, the flow of the fluid circulated between the fluid supply source and the actuator is blocked.
5. The method of claim 4,
And the fluid is supplied from the emergency pump connected to the emergency plug to the actuator when the actuator is communicated with the first and second flow paths by the plug opening and closing part.
3. The method of claim 2,
The opening /
A first opening / closing part disposed on the first flow path for selectively passing and blocking the flow of the fluid on the first flow path;
And a second opening / closing part disposed on the second flow path for selectively passing and blocking the flow of the fluid on the second flow path.
The method according to claim 6,
The emergency plug includes:
A first emergency plug disposed on one side of the emergency valve section and communicating with the first flow path between the actuator and the first opening and closing section;
And a second emergency plug disposed on the other side of the emergency valve section facing the first emergency plug and communicating with the second flow path between the actuator and the second opening and closing section.
8. The method of claim 7,
The plug opening /
A first plug opening / closing part disposed in the first emergency plug and opening the first flow path between the emergency pump and the actuator when connected to the emergency pump;
And a second plug opening / closing part disposed in the second emergency plug for opening the second flow path between the emergency pump and the actuator when connected to the emergency pump.
9. The method according to claim 7 or 8,
Wherein the first emergency plug and the second emergency plug are alternately connected to the emergency pump so as to supply the fluid from the emergency pump to the actuator so that the valve is opened and closed.
10. The method of claim 9,
Wherein the fluid comprises air,
Wherein the emergency pump is connected to any one of the first emergency plug and the second emergency plug and air is discharged to the other one when the air is supplied to the actuator.

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