KR20100090024A - Position indicator for displaying a correct valve position on a remote display apparatus - Google Patents

Abstract

PURPOSE: A position indicating device for indicating the exact valve position on a remote display station is provided to accurately indicate the location of a valve by using the load of working medium. CONSTITUTION: A position indicating device comprises a block unit(110) and a display unit(150). The block unit is composed of a body(111) and a body cover(112). The body includes an opening(114) and a first inlet(115) and a second inlet(116). A piston rod(113) moves in a longitudinal direction through the opening. The fluid pressure of working medium flows in through the first inlet and the second inlet. The display unit is composed of a housing and a display unit cover. The display unit cover is coupled with the body of the block unit, and covers the housing.

Description

POSITION INDICATOR FOR DISPLAYING A CORRECT VALVE POSITION ON A REMOTE DISPLAY APPARATUS}

The present invention relates to a remote display device, and more particularly, to a position display device for displaying the correct valve position on the remote display device that can accurately display the position of the valve to be opened and closed remotely.

Various valves used in industrial sites or ships are very difficult to open and close by the operator because of their large size and wide installation locations. For this reason, the operator remotely controls the opening and closing of the valve by using a hydraulic or pneumatic actuator using a fluid such as liquid or gas as a working medium.

In order to remotely control the opening and closing of the valve as desired, it is necessary to grasp the current valve opening and closing situation. For this purpose, a remote display device is used to determine the position of the valve through the pressure of the working medium used for the operation of the actuator. The remote display device displays the position of the valve by the pressure of the working medium on the actuator, converts it into an electrical signal, and transmits it to the position of the operator.

The present invention has been made to solve the above problems of the prior art, the problem to be solved of the present invention is provided in the remote display device can accurately display the position of the valve on the remote display device using the pressure of the operating medium. It is to provide a position display device.

In order to achieve the object of the present invention, the present invention is the piston rod is installed in the center is formed in the opening hole to move in the longitudinal direction and the first and second inlet formed with the hydraulic inlet of the working medium connected to the opening hole, Block portion consisting of a body cover for covering the body; And a display unit comprising a housing having an indicator for indicating the position of the valve by the operation of the piston rod and a connecting means for connecting the piston rod and the indicator, and a display cover that is coupled to the body of the block while covering the housing. It provides a position display device for displaying the correct valve position on the remote display device, characterized in that.

In the present invention, the body cover is fixed to one end of the body is characterized in that to hold the disk spring to limit the operating distance of the piston rod and to give elasticity to the piston rod, further to the stopper for supporting the disk spring It is another feature to include.

In addition, the body cover is characterized in that the opening hole is formed in the center to move a portion of the piston rod in the longitudinal direction and the outer ring is installed to prevent the leakage of hydraulic pressure from the body, the body cover is characterized in that the piston rod on the side Another feature is that the rod cover to protect from the outside is mounted.

In addition, the housing is provided with a rubber ring made of a material with a high resistance to hold the indicator, even if the hydraulic pressure of the working medium is removed from the block portion, the indicator is always maintained so that it is not moved by any external force, The cam fixed to the set screw is mounted and the cam operates to adjust the magnitude of the operating pressure to operate the micro switch and indicate the position of the valve, and the housing adjusts the position of the micro switch or visually sees the inside of the housing. It is another feature to provide a cover. In addition, the microswitch is characterized by transmitting the position of the valve to the remote location, and compatible with any kind of switch that can provide a contact, such as a limit switch or a proximity switch.

According to the position display device of the present invention, the position of the valve can be accurately displayed on the remote display device using the pressure of the operating medium of the actuator.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the position display device for displaying the correct valve position on the remote display device according to an embodiment of the present invention.

As shown in FIG. 1, the position display apparatus 100 according to the present exemplary embodiment includes a block unit 110 and a display unit 150.

The block unit 110 is composed of a body 111 that withstands the pressure of the operating medium of the actuator (not shown) and the other parts are assembled and embedded, and a body cover 112 covering the body 111.

Body 111 has a piston rod 113 is installed in the center is formed with an opening hole 114 to move in the longitudinal direction and the first, second inlet through which the hydraulic pressure of the working medium flows into the opening hole 114 Fields 115 and 116 are formed.

Body cover 112 is fixed to one end of the body 111 serves to hold the disk spring 117 to limit the operating distance of the piston rod 113 and to give elasticity to the piston rod 113. The disk spring 117 is supported by the stopper ring 118.

In addition, the body cover 112 has an opening hole 119 is formed in the center to move a portion of the piston rod 113 in the longitudinal direction and the outer ring O (120) to prevent the leakage of hydraulic pressure from the body 111 Is installed. In addition, the side cover of the body cover 112 is equipped with a rod cover 121 for protecting the piston rod 113 from the outside.

The display unit 150 includes a housing 151 for protecting other components and a display cover 152 coupled to the body 111 of the block unit 110 while covering the housing 151.

The housing 151 is assembled with an indicator 153 for indicating the position of the valve by the operation of the piston rod 113, and a fixing bolt 154 and a washer 155 for connecting the piston rod 113 and the indicator 153. ) Is assembled. These are designed to be lengths that can be linked to the working distance of the piston rod 113.

In addition, the housing 151 is provided with a rubber ring 156 made of a material having a high resistance to hold the indicator 153, so that even if the pressure of the working medium is removed from the block 110, the indicator 153 is always No movement is maintained by any external force other than the pressure of the working medium. In addition, the indicator 153 is equipped with a cam 156 fixed by the set screw 157, which can operate the micro switch (not shown) and adjust the magnitude of the operating pressure indicating the position of the valve.

In addition, the housing 151 is attached to the housing cover 159 to adjust the position of the microswitch (not shown) or to visually see the inside, and to connect an external cable and an internal microswitch (not shown). The connector 160 is installed. Although not shown, four maintenance holes are formed in the front part of the housing 151 so that the housing 151 can be easily assembled / disassembled, and these holes are made of rubber plugs 161 to prevent moisture or dust from entering the housing. Blocked

The above-described micro switch (not shown) transmits the position of the valve to a remote location, and is designed to be compatible with any kind of switch capable of providing a contact point such as a limit switch or a proximity switch. do.

All the above-mentioned parts can be sized as needed, in particular, the size of all other parts is determined by the working distance of the piston rod 113. In addition, the tension of the disk spring 117, which is operated by the pressure of the working medium, can be sized according to the use of the consumption such as the actuator, and is designed to be compatible with other types of springs such as the coil spring.

Next, the operation of the position display device of the present invention having the above-described configuration will be described.

First, as shown in FIG. 2, when the main valve is kept closed, the hydraulic pressures of the first and second inlets 115 and 116 are all removed, so that the position of the piston rod 113 is the disk spring 117 and the stopper. It is moved to the neutral position by the spring 118. At this time, since the indicator 153 is stopped by the rubber ring 156 to maintain the "close" position, the micro switch (not shown) continues to output the "close" signal so that the driver can remotely recognize the position of the main valve. Can be.

Next, as shown in FIG. 3, when the main valve is open, hydraulic pressure flows into the first inlet 115, and the piston rod 113 is hydraulically applied to the stopper ring 118 provided at the second inlet 116. The indicator ring 163 is displayed by about 1/2 as the indicator 153, which has been moved and stopped by the rubber ring 156, is moved by this operation. This visually indicates that the main valve is being opened and at the same time the "close" side microswitch (not shown) outputs an electrically neutral signal due to the contact dropping, allowing the operator to remotely recognize the open state of the main valve.

Next, as shown in FIG. 4, when the main valve is fully opened, that is, when the main valve is fully open and the actuator is no longer operated, the hydraulic pressure flowing to the first inlet 115 rises momentarily to the maximum pressure and the force is discharged. 2 By overcoming the tension of the disc ring 117 on the inlet 116 side, the stopper ring 118 moves until it reaches the display portion cover 152. At this time, the indicator 153 is moved to the maximum so that the indicator ring 163 is completely “opened”, and at the same time, the “open” side microswitch (not shown) outputs an “open” signal. You will notice that it is fully open.

Next, as shown in FIG. 5, when the main valve is maintained in a fully open state, when the hydraulic pressure formed at the first inlet 115 is removed, the piston rod 113 is connected to the disc ring 117 and the stopper ring 118. To the neutral position. At this time, since the indicator 153 is stopped by the rubber ring 156 to maintain the "open" position, the micro switch (not shown) continues to output the "open" signal so that the operator can remotely recognize the position of the main valve. Can be.

Next, as shown in Figure 6, when the main valve is closed, when the hydraulic pressure flows into the second inlet 116, the piston rod 113 is applied to the hydraulic pressure to the stopper ring 118 installed on the first inlet 115 side Moves by. This causes the indicator 153, which has been stopped by the rubber ring 156, to move about, and the indicator ring 163 is displayed for about 1/2 so that it is visually indicated that the main valve is in the closed position and at the same time, the "open" side microswitch ( (Not shown), the contact is separated, and the electric neutral signal can be output to allow the operator to remotely recognize the closed state of the main valve.

Finally, as shown in Fig. 7, when the main valve is completely closed, i.e., when the movement of the actuator is stopped because the main valve is completely closed, the hydraulic pressure flowing to the second inlet 116 instantly rises to the maximum pressure and the force is increased. The stopper ring 118 is moved until it reaches the body cover 112 by overcoming the tension of the disc ring 117 at the first inlet 115. At this time, the indicator 153 moves to the maximum so that the indicator ring 163 shows the "close" completely, and at the same time, the "close" side microswitch (not shown) outputs the "close" signal, and the operator remotely closes the valve completely. It can be noticed.

As mentioned above, although the position display device for displaying the correct valve position on the remote display device of the present invention with reference to the preferred embodiment, various changes, modifications or variations are possible without departing from the spirit of the present invention. It is obvious to those skilled in the art.

1 is a schematic cross-sectional view of a positioning device according to a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the position indicating device of FIG. 1 when the valve is kept closed; FIG.

3 is a schematic cross-sectional view of the position display device of FIG. 1 when the valve is in an open state;

4 is a schematic cross-sectional view of the position indicator of FIG. 1 when the valve is fully open;

FIG. 5 is a schematic cross-sectional view of the position indicating device of FIG. 1 when the valve is kept fully open; FIG.

FIG. 6 is a schematic cross-sectional view of the position indicating device of FIG. 1 when the valve is in a closed state; FIG. And

7 is a schematic cross-sectional view of the position indicator of FIG. 1 when the valve is fully closed.

<Explanation of symbols for main parts of drawing>

100: position display device 110: block

111: body 112: body cover

113: piston rod 115,116: first and second inlet

117: disk spring 118: stopper ring

121: rod cover 150: display unit

151 housing 152 cover cover

153: indicator 156: rubber ring

157: cam 159: housing cover

161: Rubber Plug

Claims (10)

A block portion including a body having a first and second inlets through which a piston rod is installed at a center thereof, the opening hole being formed to move in a longitudinal direction, and the hydraulic pressure of the working medium flowing into the opening hole and the body cover covering the body; And An indicator for indicating the position of the valve by the operation of the piston rod is provided, and a housing in which the connecting means for connecting the piston rod and the indicator is assembled, and a display cover that is coupled to the body of the block portion covering the housing Position display device for displaying the correct valve position on the remote display device comprising a configured display. The position display apparatus according to claim 1, wherein the body cover is fixedly installed at one end of the body to limit a working distance of the piston rod and to hold a disk spring that provides elasticity to the piston rod. The position indicating device according to claim 2, further comprising a stopper ring for supporting the disk spring. According to claim 1, wherein the body cover has an opening hole is formed in the center so that a portion of the piston rod can move in the longitudinal direction and the outer ring is installed on the outside is installed to prevent the hydraulic leakage from the body Device. The position display apparatus according to claim 4, wherein the body cover has a rod cover mounted on a side thereof to protect the piston rod from the outside. The housing of claim 1, wherein the housing is provided with a rubber ring made of a material having a high resistance to hold the indicator so that the indicator is not moved by any external force even when the hydraulic pressure of the working medium is removed from the block part. Position display device, characterized in that maintained. 7. The position display apparatus according to claim 6, wherein the indicator is equipped with a cam fixed with a set screw, and the cam controls the magnitude of the operating pressure for operating the micro switch and indicating the position of the valve. 8. The position display apparatus of claim 7, wherein the housing includes a housing cover to adjust the position of the micro switch or to visually see the inside thereof. The method of claim 8, wherein the microswitch transmits the position of the valve to a remote location and is compatible with any kind of switch capable of providing a contact point such as a limit switch or a proximity switch. Position display device characterized in that. The method of claim 1, wherein the indicator and the piston rod is separated so that the indicator does not interlock when the pressure of the working medium is removed to move the piston rod in the neutral by the elasticity of the spring, characterized in that the connection structure Locator.

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