JP5731619B2 - Remote position detector for multi-rotation drive - Google Patents

Description

  The present invention relates to a remote position detection device, and more particularly to a remote position detection device for a multi-rotation drive capable of detecting an open / close position of a multi-rotation drive that opens and closes a valve located at a long distance.

  Generally, when a valve is installed in a ship, plant, etc., it is difficult to reach people because it is installed in deep water like a tank or in the sea. It is operating.

  In the case of a general hydraulic drive, it is a cylinder and the open side and the shield side inside the cylinder are separated by the cylinder head or piston, so that the valve position is determined by the flow rate sent to the open side or the shield side. Can be confirmed remotely.

  However, in the case of a multi-turn actuator used for multi-rotation (multi-turn actuator), the drive system is usually a hydraulic motor that rotates continuously by hydraulic pressure. In the case of such a hydraulic motor, By adopting a structure in which the rotated fluid flows out to the opposite side, the opening and shielding are not sealed together, so there is a problem that it is impossible to recognize the position with the flow rate sensing type like the cylinder .

  On the other hand, in the case of most remotely operated multi-rotation drive machines, in order to remotely recognize the position of the valve, an electric limit switch is installed and checked, but in the case of an electric limit switch, Although accuracy is excellent, there is a problem that safety and watertightness are lowered when used in deep water.

  Further, in the case of an electric limit switch, there is an inconvenience that an electric wire must be connected to the hydraulic operation portion of the valve side limit switch. Furthermore, there is a problem that when the electric line is cut in the middle or when a power failure occurs, the power supply is interrupted and the position of the valve cannot be detected.

  The present invention has been made to solve the above-described problems. A hydraulic circuit breaker is used to allow hydraulic oil to flow to the multi-rotation drive during the operation of the valve so that the valve is in a fully open state or a complete shield. An object is to provide a remote position detecting device for a multi-rotation drive machine that can detect the position of a valve remotely by shutting off the hydraulic pressure and confining the hydraulic pressure when the state is reached.

  Another object of the present invention is to provide a remote position detecting device for a multi-rotation driving machine that can accurately and safely detect the open / close position of a valve without a separate electric limit switch. There is.

  Problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems to be solved by the present invention not described here have ordinary knowledge in the technical field to which the present invention belongs from the following description. Clearly understandable to those who have.

  In order to achieve the above object, a remote position detecting apparatus for a multi-rotation drive device according to the present invention includes a multi-rotation drive device that opens and closes a valve by generating a rotational force with hydraulic oil supplied from a hydraulic pump; A first hydraulic circuit breaker which is provided on a first hydraulic line connected to a rotary drive machine and which cuts off the supply of hydraulic oil to the multi-rotation drive machine when the valve completely moves to the open side; A second hydraulic circuit breaker which is provided on a second hydraulic line connected to the machine and shuts off the supply of hydraulic oil to the multi-rotation drive machine when the valve moves completely to the shielding side; A solenoid valve that is connected to the other end and the other end of the second hydraulic line and interrupts supply and recovery of hydraulic oil when the first hydraulic circuit breaker or the second hydraulic circuit breaker is interrupted; Shut off And a first pressure gauge for detecting a fully opened state of the valve if a first hydraulic pressure value generated in the first hydraulic line is equal to or higher than a preset pressure threshold value; And when the second hydraulic pressure value generated in the second hydraulic line is greater than or equal to the pressure threshold value, a fully shielded state of the valve is detected. 2 pressure gauges.

  The first hydraulic circuit breaker of the present invention includes a first circuit breaker main body, a first circuit breaker channel provided on one side of the first circuit breaker main body and connected to the first hydraulic line, A second circuit breaker channel provided at a position higher than the first circuit breaker channel on the other side of the first circuit breaker body and connected to the multi-rotation drive unit, and a vertical direction from the inside of the first circuit breaker body A third breaker having a lower portion connected to the first breaker flow path, an upper portion connected to the second breaker flow path, and an inner diameter reduced at a connection point with the second breaker flow path A first flow path breaker ball that is accommodated in the third breaker flow path so as to be vertically movable and has a diameter larger than a reduced diameter portion of the third breaker flow path; A first circuit breaker gear provided on the upper side of the circuit breaker body and rotating in conjunction with the multi-rotation drive; and the first circuit breaker gear A first circuit breaker gear that extends to the inside of the third circuit breaker channel, contacts the upper end of the first channel blocker ball, and moves the first channel blocker ball in the vertical direction by rotation. Can do.

  The second hydraulic circuit breaker of the present invention includes a second circuit breaker body, a fourth circuit breaker channel provided on one side of the second circuit breaker body, and connected to the second hydraulic line, On the other side of the second circuit breaker body, a fifth circuit breaker path provided at a position higher than the fourth circuit breaker flow path and connected to the multi-rotation drive unit, and the vertical direction from the inside of the second circuit breaker body A sixth breaker having a lower portion connected to the fourth breaker flow path, an upper portion connected to the fifth breaker flow path, and an inner diameter reduced at a connection point with the fifth breaker flow path A second flow path breaker ball that is accommodated in the sixth breaker flow path so as to be vertically movable and has a diameter larger than the reduced diameter portion of the sixth breaker flow path, A second circuit breaker gear provided on the upper side of the circuit breaker body and rotating in conjunction with the multi-rotation drive; and the second circuit breaker gear A second circuit breaker gear that extends to the inside of the sixth circuit breaker channel, contacts the upper end of the second channel blocker ball, and moves the second channel blocker ball in the vertical direction by rotation. it can.

  In addition, the multi-rotation driving machine of the present invention is provided in the vertical direction, and is provided on the driving machine rotating shaft, the driving machine rotating shaft transmitting the rotational force for opening and closing the valve, and the driving machine rotating shaft. And the first hydraulic circuit breaker and the second hydraulic circuit breaker are arranged on both sides of the rotating shaft of the driving machine, and the first circuit breaker gear and the second circuit breaker are included. The gear is fastened to both sides of the drive gear and rotates, and the first breaker gear shaft and the second breaker gear shaft are threaded in opposite directions, and the drive gear is rotated in one direction. The first circuit breaker gear shaft rises in conjunction with the third circuit breaker flow path, and the second circuit breaker gear shaft descends to open the sixth circuit breaker flow path. The first breaker gear shaft descends in conjunction with the rotation of the machine gear in the other direction, and the third breaker flow Can was opened, the second breaker gear shaft blocking the sixth breaker passage rises.

  In the present invention, when the first circuit breaker gear shaft and the second circuit breaker gear shaft are moved up and down, the first circuit breaker gear and the second circuit breaker gear are not separated from the driving machine gear. In addition, the thickness of the driving machine gear can be formed thicker than the vertical movement amount of the first circuit breaker gear shaft and the second circuit breaker gear shaft.

  In the present invention, the first hydraulic pressure value and the second hydraulic pressure value are the same when the valve is open or shielded, and the first hydraulic pressure value is the same when the valve is fully open. The second hydraulic pressure value is higher than the second hydraulic pressure value, and the second hydraulic pressure value can be higher than the first hydraulic pressure value when the valve is completely shielded.

  Also, the solenoid valve of the present invention is configured to connect the first hydraulic line to the supply end of the hydraulic pump and open the second hydraulic line to the recovery end of the hydraulic tank in order to open the valve. A second valve flow path that connects the second hydraulic line to the supply end of the hydraulic pump and connects the first hydraulic line to the recovery end of the hydraulic tank to form a flow path and shield the valve And the other end of the first hydraulic line and the second hydraulic line is shut off from the supply end of the hydraulic pump and the recovery end of the hydraulic tank when the valve is fully open and fully shielded. It is possible to form an intermediate valve cutoff path that maintains the above.

  According to the means for solving the above-mentioned problems, the remote position detecting device for a multi-rotation driving machine of the present invention uses a hydraulic circuit breaker to allow hydraulic oil to flow through the multi-rotation driving machine during operation of the valve. When the valve is in a fully opened state or a completely shielded state, the valve position can be detected remotely by shutting off the hydraulic pressure and confining the hydraulic pressure.

  In addition, the remote position detection apparatus for a multi-rotation drive machine according to the present invention has an effect that the open / close position of the valve can be detected remotely and accurately without a separate electric limit switch.

FIG. 2 is a schematic diagram illustrating a remote position detection apparatus for a multi-rotation driving machine according to an embodiment of the present invention. It is sectional drawing of the 1st hydraulic circuit breaker by one Example of this invention. It is sectional drawing of the 2nd hydraulic circuit breaker by one Example of this invention. It is sectional drawing which showed the fastening state of the multi-rotation drive machine by the one Example of this invention, the 1st hydraulic circuit breaker, and the 2nd hydraulic circuit breaker. It is a figure explaining the operating characteristic of the remote position detection apparatus for the multi-rotation drive machine by one Example of this invention.

  Specific matters including the problems to be solved by the present invention, the means for solving the problems, and the effects of the invention are included in the following embodiments and drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with reference to the accompanying drawings.

  Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

  1 to 4 are diagrams illustrating a remote position detecting apparatus for a multi-rotation driving machine according to an embodiment of the present invention. Specifically, FIG. 1 is a diagram schematically illustrating a remote position detecting device for a multi-rotation drive according to an embodiment of the present invention, and FIG. 2 is a first hydraulic pressure according to an embodiment of the present invention. FIG. 3 is a sectional view of a second hydraulic circuit breaker according to an embodiment of the present invention, and FIG. 4 is a multi-rotation drive unit, a first hydraulic circuit breaker, and a second hydraulic circuit breaker according to an embodiment of the present invention. It is sectional drawing which showed the fastening state of the container.

  As shown in FIGS. 1 to 4, the remote position detector for a multi-rotation drive according to an embodiment of the present invention includes a multi-rotation drive 110, a first hydraulic circuit breaker 120, a second hydraulic circuit breaker 130, A solenoid valve 140, a first pressure gauge 150, and a second pressure gauge 160 are included.

  The multi-rotation drive 110 opens and closes the valve 10 by generating a rotational force with hydraulic oil supplied from a hydraulic pump. Specifically, since the valve 10 is installed in a tank or deep sea in a ship, a plant, etc., a valve body in which a guide hole is formed inside on one side and a screw portion is formed on the inner peripheral surface of the guide hole, and a screw A screw that meshes with the part and rotates and moves along the guide hole to open or shield the valve. The multi-rotation driver 110 is connected to a screw to provide a rotational force.

  That is, the multi-rotation drive 110 is a kind of hydraulic motor that generates a rotational force by the hydraulic pressure of the hydraulic oil. In the multi-rotation drive 110, the first hydraulic line 121 and the second hydraulic line 131 are connected to both sides, the hydraulic oil is supplied to one side, and the rotational force is generated by the hydraulic pressure generated by the operation of collecting the hydraulic oil from the other side. Will be generated. Regarding the structural features and operational characteristics of the multi-rotation driving device 110 according to an embodiment of the present invention, after examining the structure of the first hydraulic circuit breaker 120 and the second hydraulic circuit breaker 130 shown in FIGS. This will be described in more detail with reference to FIG. 4 showing the fastening relationship between the multi-rotation drive 110 and the first hydraulic circuit breaker 120 and the second hydraulic circuit breaker 130.

  The first hydraulic circuit breaker 120 is provided on the first hydraulic line 121 connected to the multi-rotation drive unit 110, and shuts off the hydraulic oil supply to the multi-rotation drive unit 110 when the valve 10 moves completely to the open side. .

  Specifically, referring to FIG. 2, the first hydraulic circuit breaker 120 is provided on the first circuit breaker body 122 and one side surface of the first circuit breaker body 122 and connected to the first hydraulic line 121. A first circuit breaker flow path 123, a second circuit breaker flow path 124 provided at a position higher than the first circuit breaker flow path 123 on the other side of the first circuit breaker body 122, and connected to the multi-rotation drive unit 110; The first circuit breaker body 122 extends in the vertical direction, the lower part is connected to the first circuit breaker flow path 123, the upper part is connected to the second circuit breaker flow path 124, and the connection point with the second circuit breaker flow path 124 In the third circuit breaker flow path 125 whose inner diameter is reduced, the third circuit breaker flow path 125 is accommodated in the third circuit breaker flow path 125 so as to be vertically movable, and is formed to have a larger diameter than the reduced diameter portion of the third circuit breaker flow path 125. Provided on the upper side of the first flow path blocking ball 126 and the first circuit breaker body 122; A first circuit breaker gear 127 that rotates in conjunction with the rotation drive unit 110, extends from the first circuit breaker gear 127 to the inside of the third circuit breaker flow path 125, contacts the upper end of the first flow path breaker ball 126, A first circuit breaker gear shaft 128 that moves the first flow path block ball 126 in the vertical direction by rotation may be included.

  With this structure, the first circuit breaker gear 127 rotates to move the first circuit breaker gear shaft 128 up and down, and the first circuit breaker gear shaft 128 has a first lower portion of the first circuit breaker gear shaft 128 inside. The operation characteristic is shown in which the flow path blocking ball 126 is pushed up by hydraulic pressure to block the hydraulic pressure.

  That is, when the hydraulic oil is supplied to the multi-rotation driving device 110 through the first hydraulic circuit breaker 120 for opening the valve 10, the hydraulic oil is directed from the first circuit breaker flow path 122 to the second circuit breaker flow path 123. Is generated, and a rising force of the first flow path blocking ball 126 is generated in the third circuit breaker flow path 124. At this time, as shown in FIG. 2A, when the first circuit breaker gear 127 moves downward due to rotation, the first circuit breaker gear shaft 128 moves downward to raise the first flow path breaking ball 126. It suppresses and the open state of the 1st hydraulic circuit breaker 120 is maintained. In addition, when the first circuit breaker gear 127 is moved upward by rotation as shown in FIG. 2B, the first circuit breaker gear shaft 128 is moved upward and the first flow path breaker ball 126 is raised. As a result, when the valve 10 is fully open, the reduced diameter portion of the third circuit breaker flow path 125 is blocked by the first flow path cut-off ball 126, and the cut-off state of the first hydraulic circuit breaker 120 is maintained. On the other hand, in addition to the hydraulic pressure, an elastic spring may be provided below the second flow path blocking ball 136 in order to further provide the lifting force of the first flow path blocking ball 126.

  Here, FIG. 2 shows a case in which hydraulic oil is supplied to the multi-rotation drive unit 110 through the first hydraulic circuit breaker 120, and conversely, the operation from the multi-rotation drive unit 110 through the first hydraulic circuit breaker 120. In the direction in which the oil is recovered, the hydraulic oil moves to the first circuit breaker flow path 123 through the second circuit breaker flow path 124, so that the hydraulic oil does not depend on the vertical position of the first circuit breaker gear shaft 128. Due to the hydraulic pressure, the first flow path blocking ball 126 always keeps moving downward. As a result, in the direction of recovery, the hydraulic oil recovery operation can always be performed without the first hydraulic circuit breaker 120 being shut off.

  The second hydraulic circuit breaker 130 is provided on the second hydraulic line 131 connected to the multi-rotation drive unit 110, and shuts off the hydraulic oil supply to the multi-rotation drive unit 110 when the valve 10 moves completely to the shielding side. .

  Specifically, referring to FIG. 3, the second hydraulic circuit breaker 130 is provided on the second circuit breaker body 132 and one side surface of the second circuit breaker body 132, and is connected to the second hydraulic line 131. A fourth circuit breaker flow path 133, a fifth circuit breaker flow path 134 provided at a position higher than the fourth circuit breaker 133 flow path on the other side of the second circuit breaker body 132, and connected to the multi-rotation drive unit 110, The second circuit breaker main body 132 extends in the vertical direction, the lower part is connected to the fourth circuit breaker channel 133, the upper part is connected to the fifth circuit breaker channel 134, and the connection point with the fifth circuit breaker channel 134 In the sixth circuit breaker flow path 135 whose inner diameter is reduced, and is accommodated in the sixth circuit breaker flow path 135 so as to be vertically movable, the diameter is larger than the reduced diameter portion of the sixth circuit breaker flow path 135. Provided on the upper side of the second flow path blocking ball 136 and the second circuit breaker main body 132. A second circuit breaker gear 137 that rotates in conjunction with the multi-rotation driving device 110, and extends from the second circuit breaker gear 137 to the inside of the sixth circuit breaker channel 135 and contacts the upper end of the second channel circuit breaker ball 136. , And a second circuit breaker gear shaft 138 that moves the second flow path block ball 136 in the vertical direction by rotation.

  With such a structure, the second circuit breaker gear 137 rotates to move the second circuit breaker gear shaft 138 up and down, and the second circuit breaker gear shaft 138 below the second circuit breaker gear shaft 138 is moved inside the second circuit breaker body 132. The operation characteristic is shown in which the flow path blocking ball 136 is pushed up by the hydraulic pressure to block the hydraulic pressure.

  That is, when hydraulic oil is supplied to the multi-rotation drive unit 110 through the second hydraulic circuit breaker 130 for shielding the valve 10, the hydraulic oil flows from the fourth circuit breaker channel 132 toward the fifth circuit breaker channel 133. Is generated, and a rising force of the second flow path blocking ball 136 is generated in the sixth circuit breaker flow path 134. At this time, as shown in FIG. 3A, when the second circuit breaker gear 137 is moved downward by rotation, the second circuit breaker gear shaft 138 is moved downward to raise the second flow path breaker ball 136. It suppresses and the open state of the 2nd hydraulic circuit breaker 130 is maintained. Further, when the second circuit breaker gear 137 is moved upward by rotation as shown in FIG. 2B, the second circuit breaker gear shaft 138 is moved upward and the second flow path breaker ball 136 is raised. As a result, when the valve 10 is completely shielded, the reduced diameter portion of the sixth circuit breaker channel 135 is blocked by the second channel blocker ball 136 and the second hydraulic circuit breaker 130 is maintained in the blocked state. On the other hand, in addition to the hydraulic pressure, an elastic spring may be provided below the second flow path blocking ball 136 in order to further provide the lifting force of the second flow path blocking ball 136.

  Here, FIG. 3 shows a case where the hydraulic oil is supplied to the multi-rotation drive unit 110 through the second hydraulic circuit breaker 130, and conversely from the multi-rotation drive unit 110 through the second hydraulic circuit breaker 130. In the case of the direction in which the hydraulic oil is collected, the hydraulic oil moves to the fourth circuit breaker flow path 133 through the fifth circuit breaker flow path 134, so that the operation can be performed regardless of the vertical position of the second circuit breaker gear shaft 138. Due to the oil pressure of the oil, the state where the second flow path blocking ball 136 is always moved downward is maintained. As a result, in the direction of recovery, the operation of recovering hydraulic oil can always be performed without the second hydraulic circuit breaker 130 being shut off.

  Meanwhile, referring to FIG. 4 showing the fastening relationship between the multi-rotation driving device 110 and the first hydraulic circuit breaker 120 and the second hydraulic circuit breaker 130, the multi-rotation driving device 110 according to an embodiment of the present invention operates. A hydraulic drive unit 111 that rotates by the hydraulic pressure of the oil, a drive unit rotary shaft 112 that is provided below the hydraulic drive unit 111 in the vertical direction and transmits a rotational force for opening and closing the valve 10, and a drive unit rotary shaft 112 And a drive gear 113 that is provided above and rotates in conjunction with the drive rotary shaft 112.

  Here, the first hydraulic circuit breaker 120 and the second hydraulic circuit breaker 130 are arranged on both sides of the driving machine rotating shaft 112, and the first circuit breaker gear 127 and the second circuit breaker gear 137 are arranged on both sides of the driving machine gear 113, respectively. Fastened and rotated.

  The first circuit breaker gear shaft 128 and the second circuit breaker gear shaft 138 are threaded in opposite directions, and the first circuit breaker gear shaft 128 is raised in conjunction with the one-way rotation of the drive gear 113. Thus, the third circuit breaker flow path 125 is blocked, and the second circuit breaker gear shaft 128 is lowered to open the sixth circuit breaker flow path 135.

  On the contrary, the first circuit breaker gear shaft 128 descends in conjunction with the other direction rotation of the drive gear 113 to open the third circuit breaker flow path 125, and the second circuit breaker gear shaft 138 rises to The circuit breaker channel 135 is blocked.

  Thus, the first circuit breaker gear 127 and the second circuit breaker gear 137 are fastened to both sides of the drive gear 113, respectively, and the first circuit breaker gear shaft 128 and the second circuit breaker gear shaft 138 are screwed in directions opposite to each other. The first circuit breaker gear 127 and the second circuit breaker gear 137 can be driven in conjunction with each other in the rotational direction of the driving machine gear 113 by the structure in which the portion is formed.

  In one embodiment of the present invention, when the first circuit breaker gear shaft 128 and the second circuit breaker gear shaft 138 are moved up and down, the first circuit breaker gear 127 and the second circuit breaker gear 137 are connected to the driving machine gear 113. It is preferable to form the thickness of the drive gear 113 thicker than the vertical movement amount of the first circuit breaker gear shaft 128 and the second circuit breaker gear shaft 138 so as not to disengage from the first circuit breaker gear shaft 138.

  The solenoid valve 140 is connected to the other end of the first hydraulic line 121 and the other end of the second hydraulic line 131. When the first hydraulic circuit breaker 120 or the second hydraulic circuit breaker 130 is interrupted, supply and collection of hydraulic oil is performed. Interrupt. Specifically, the solenoid valve 140 connects the first hydraulic line 121 to the supply end of the hydraulic pump 20 and opens the second hydraulic line 131 to the recovery end of the hydraulic tank 30 to open the valve 10. A flow path 141 is formed. The solenoid valve 140 connects the second hydraulic line 131 to the supply end of the hydraulic pump 20 and shields the first hydraulic line 121 to the recovery end of the hydraulic tank 30 in order to shield the valve 10. 142 is formed. In addition, the solenoid valve 140 shuts off the other ends of the first hydraulic line 121 and the second hydraulic line 131 from the supply end of the hydraulic pump 20 and the recovery end of the hydraulic tank 30 when the valve 10 is in a fully open state and a complete shield state. Thus, the intermediate valve cutoff path 143 that maintains the hydraulic pressure can be formed.

  Meanwhile, the remote position detection apparatus for a multi-rotation driving machine according to an embodiment of the present invention further includes a separate controller (not shown) for operating the respective flow paths 141, 142, and 143 of the solenoid valve 140. When the valve 10 is in the fully open state and the completely shielded state, the switching operation of the first hydraulic circuit breaker 120 and the second hydraulic circuit breaker 130 is performed by the circuit breaker gear in order to switch to the state of the intermediate valve circuit 143. When the controller senses this by a position sensor that senses the position of the shaft or a pressure sensor that senses a rapid increase in pressure during the shut-off operation, the state of the intermediate valve shut-off path 143 can be switched. Further, the rotation amount of the driving gear 113 of the multi-rotation driving device 110 is sensed and switched, or the intermediate valve shut-off path 143 is brought into a state when a predetermined time has elapsed after the command to fully open or completely close the valve 10. Switching methods are also possible.

  The first pressure gauge 150 is provided between the first hydraulic circuit breaker 120 and the solenoid valve 140. If the first hydraulic pressure value generated in the first hydraulic pressure line 121 is equal to or greater than a preset pressure threshold value, the valve 10 Detects the fully open state.

  The second pressure gauge 160 is provided between the second hydraulic circuit breaker 130 and the solenoid valve 140. When the second hydraulic pressure value generated in the second hydraulic line 131 is equal to or greater than the pressure threshold value, the valve 10 is completely shielded. Is detected.

  For example, when the multi-rotation driving device 110 is operated exclusively by the hydraulic pressure of the hydraulic pump 20 without the first hydraulic circuit breaker 120 and the second hydraulic circuit breaker 130 being shut off, the hydraulic pressure does not increase to a constant pressure of 40 bar or more. When the operation of the hydraulic pump 20 is stopped, the pressure returns to 0 bar, which is the natural pressure. On the other hand, if the breaking operation of the first hydraulic circuit breaker 120 or the second hydraulic circuit breaker 130 is performed, a high pressure of 80 bar or more is formed. At this time, even if the operation of the hydraulic pump 20 is stopped, the first hydraulic circuit breaker is formed. The hydraulic pressure is interrupted by 120 or the second hydraulic circuit breaker 130, and the other ends of the first hydraulic line 121 and the second hydraulic line 131 are blocked by the solenoid valve 140, so that the existing pressure is maintained without returning to the natural pressure. It becomes like this.

  That is, in one embodiment of the present invention, the pressure threshold value is set in advance to 80 bar, and the first hydraulic pressure value generated in the first hydraulic line 121 by the first pressure gauge 150 during the opening operation of the valve 10 is 80 bar or more. If so, it can be sensed that the valve 10 is fully open. Further, if the second hydraulic pressure value generated in the second hydraulic line 131 by the second pressure gauge 160 during the shielding operation of the valve 10 is 80 bar or more, it can be detected that the valve 10 is in a completely shielded state. On the other hand, 80 bar is an example of a pressure threshold value, and can be set lower than 80 bar or higher than 80 bar within a certain range for sensitivity adjustment.

  In another embodiment of the present invention, it is also possible to sense the operating state of the valve 10 by comparing the magnitudes of the first hydraulic pressure value and the second hydraulic pressure value. Specifically, when the valve 10 is opened or shielded, the first hydraulic pressure value and the second hydraulic pressure value are the same, and when the valve 10 is fully opened, the first hydraulic circuit breaker 120 is shut off and the first hydraulic pressure value is the first. When the hydraulic pressure value is higher than the second hydraulic pressure value and the valve 10 is completely shielded, the second hydraulic pressure value becomes higher than the first hydraulic pressure value due to the interruption of the second hydraulic circuit breaker 130. During the shielding operation, the fully opened state and the completely shielded state can be detected.

  FIG. 5 is a diagram for explaining the operating characteristics of the remote position detecting device for a multi-rotation driving machine according to an embodiment of the present invention.

  FIG. 5A shows a state in which the valve 10 is open. The solenoid valve 140 forms a first valve flow path 141, and the first hydraulic pressure is supplied from the supply end of the hydraulic pump 20 through the first hydraulic line 121. The hydraulic oil is supplied in the order of the circuit breaker 120 and the multi-rotation drive unit 110 to rotate the multi-rotation drive unit 110 in one direction. Thereafter, the supplied hydraulic oil is collected in the hydraulic tank 30 through the second hydraulic circuit breaker 130 through the second hydraulic line 131. In this case, referring to FIG. 4, the driving machine gear 113 rotates in one direction, the first circuit breaker gear 127 rotates in conjunction with the driving machine gear 113, and the first circuit breaker gear shaft 128 rises. Thus, the second circuit breaker gear 137 rotates in conjunction with the driving machine gear 113, and the second circuit breaker gear shaft 138 descends. At this time, if it is assumed that the normal hydraulic pressure for driving the multi-rotation driving device 110 is 40 bar, both the first pressure gauge 150 and the second pressure gauge 160 show a hydraulic pressure value of 40 bar.

  FIG. 5B shows the fully opened state of the valve 10. When the first circuit breaker gear shaft 128 rises to the upper end (see FIGS. 2 and 4), the first flow path blocking ball 126 is moved to the first position. The internal flow path of one hydraulic circuit breaker 120 is interrupted, one end of the first hydraulic line 121 is suddenly interrupted, and the hydraulic pressure in the first hydraulic line 121 is instantaneously increased by the hydraulic pump 20. . Soon, the solenoid valve 140 forms an intermediate valve shut-off path 143 and the other end of the first hydraulic line 121 is shut off. As a result, the first hydraulic line 121 maintains the increased hydraulic pressure, and the first pressure gauge 150 shows a preset pressure threshold value of 80 bar or more, so the valve 10 is fully opened. The state can be detected remotely. The second pressure gauge 160 at this time shows a hydraulic pressure value of 40 bar or less.

  FIG. 5C shows a state in which the valve 10 is being shielded. The solenoid valve 140 forms a second valve flow path 142, and the second hydraulic pressure is supplied from the supply end of the hydraulic pump 20 through the second hydraulic line 131. The hydraulic oil is supplied in the order of the circuit breaker 130 and the multi-rotation drive unit 110 to rotate the multi-rotation drive unit 110 in the other direction. Thereafter, the supplied hydraulic oil is collected in the hydraulic tank 30 through the first hydraulic circuit breaker 120 and the first hydraulic line 121. Referring to FIG. 4, the driving machine gear 113 rotates in the other direction, the second circuit breaker gear 137 rotates in conjunction with the driving machine gear 113, and the second circuit breaker gear shaft 138 is raised. Thus, the first circuit breaker gear 127 rotates in conjunction with the drive machine gear 113, and the first circuit breaker gear shaft 128 descends. At this time, if it is assumed that the normal hydraulic pressure for driving the multi-rotation driving device 110 is 40 bar, the second pressure gauge 160 and the first pressure gauge 150 both show a hydraulic pressure value of 40 bar.

  FIG. 5 (d) shows a completely shielded state of the valve 10. When the second breaker gear shaft 138 is raised to the upper end (see FIGS. 3 and 4), the second flow path blocking ball 136 is moved to the first position. 2 The internal flow path of the hydraulic circuit breaker 130 is interrupted, one end of the second hydraulic line 131 is suddenly interrupted, and the hydraulic pressure in the second hydraulic line 131 is instantaneously increased by the hydraulic pump 20. . Soon, the solenoid valve 140 forms the intermediate valve cutoff path 143 and the other end of the second hydraulic line 131 is shut off. As a result, the second hydraulic line 131 maintains an increased hydraulic pressure, so the second pressure gauge 160 shows a preset pressure threshold value of 80 bar or more, so that the valve 10 is completely shielded. The state can be detected remotely. At this time, the first pressure gauge 150 shows a hydraulic pressure value of 40 bar or less.

  As described above, in the embodiment of the present invention, the hydraulic pressure generated by the hydraulic pump remotely is supplied through the solenoid valve, so that the multi-rotation driving machine operates. And when a valve opens and closes completely, a hydraulic circuit breaker operates and it interrupts | blocks a hydraulic line. At this time, when the solenoid valve is remotely returned to the middle level, the hydraulic pressure on each hydraulic line in the fully open state and the fully shielded state is not reduced, and the pressure at the time of operation is maintained. The opening and closing of the valve can be confirmed.

  In the case of a hydraulic circuit breaker, the circuit breaker gear shaft moves up and down as the circuit breaker gear rotates, and the flow path block ball is pushed up by the hydraulic pressure inside the circuit breaker body to block the hydraulic pressure.

  In addition, one hydraulic breaker is installed on each of the open side and the shield side of the multi-rotation drive machine, and the breaker gear of the hydraulic circuit breaker is rotated by rotating the drive machine rotating shaft and the drive machine gear. .

  Therefore, the remote position detector for a multi-rotation drive according to an embodiment of the present invention uses a hydraulic circuit breaker so that hydraulic oil flows in the multi-rotation drive when the valve is in operation. There is an advantage that the valve position can be detected remotely by shutting off the hydraulic pressure and confining the hydraulic pressure when the valve is fully open or fully shielded, and there is no separate electric limit switch. Can be remotely detected accurately and safely.

  As described above, the technical configuration of the present invention described above can be implemented in other specific forms by those skilled in the art to which the present invention belongs without changing the technical idea and essential features of the present invention. I can understand what I can do.

  Therefore, it should be understood that the embodiments described above are illustrative and not restrictive in all aspects, and the scope of the present invention is defined by the following claims rather than the foregoing detailed description. All modifications or variations that are determined and derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

  The present invention can be applied to a remote position detection device for a multi-rotation drive capable of detecting an open / close position of a multi-rotation drive that opens and closes a valve located at a long distance.

DESCRIPTION OF SYMBOLS 10 Valve 20 Hydraulic pump 30 Hydraulic tank 110 Multi-rotation drive 111 Hydraulic drive part 112 Drive rotary shaft 113 Drive gear 120 1st hydraulic circuit breaker 121 1st hydraulic line 122 1st circuit breaker main body 123 1st circuit breaker flow path 124 2nd circuit breaker flow path 125 3rd circuit breaker flow path 126 1st flow path breaker ball 127 1st circuit breaker gear 128 1st circuit breaker gear shaft 130 2nd hydraulic circuit breaker 131 2nd hydraulic circuit line 132 2nd circuit breaker Body 133 Fourth circuit breaker channel 134 Fifth circuit breaker channel 135 Sixth circuit breaker channel 136 Second channel circuit breaker ball 137 Second circuit breaker gear 138 Second circuit breaker gear shaft 140 Solenoid valve 141 First valve flow Path 142 Second valve flow path 143 Intermediate valve cutoff path 150 First pressure gauge 160 Second pressure gauge

Claims (7)

A multi-rotation drive that opens and closes a valve by generating a rotational force by hydraulic oil supplied from a hydraulic pump;
A first hydraulic circuit breaker provided on a first hydraulic line connected to the multi-rotation drive unit, wherein the valve is completely moved to the open side to cut off hydraulic oil supply to the multi-rotation drive unit;
A second hydraulic circuit breaker which is provided on a second hydraulic line connected to the multi-rotation driving machine and shuts off the hydraulic oil supply to the multi-rotation driving machine by the valve completely moving to the shielding side;
A solenoid that is connected to the other end of the first hydraulic line and the other end of the second hydraulic line and interrupts the supply and recovery of hydraulic fluid when the first hydraulic circuit breaker or the second hydraulic circuit breaker is interrupted. valve;
Provided between the first hydraulic circuit breaker and the solenoid valve, if the first hydraulic pressure value generated in the first hydraulic line is equal to or higher than a preset pressure threshold value, the fully open state of the valve is detected. And a first pressure gauge that is provided between the second hydraulic circuit breaker and the solenoid valve, and if the second hydraulic pressure value generated in the second hydraulic line is equal to or greater than the pressure threshold value, the valve is completely A second pressure gauge for detecting the shielding state;
A remote position detecting apparatus for a multi-rotation drive machine, characterized in that The first hydraulic circuit breaker includes:
A first circuit breaker body;
A first circuit breaker channel provided on one side of the first circuit breaker body and connected to the first hydraulic line;
A second circuit breaker channel provided at a position higher than the first circuit breaker channel on the other side of the first circuit breaker body, and connected to the multi-rotation drive;
The first circuit breaker main body extends in the vertical direction, the lower part is connected to the first circuit breaker flow path, the upper part is connected to the second circuit breaker flow path, and the connection point with the second circuit breaker flow path Then, a third circuit breaker channel whose inner diameter is reduced,
A first flow path breaker ball that is accommodated in the third breaker flow path so as to be vertically movable, and is formed to have a diameter larger than a reduced diameter portion of the third breaker flow path;
A first circuit breaker gear provided on an upper side of the first circuit breaker body and rotating in conjunction with the multi-rotation drive;
A first circuit breaker that extends from the first circuit breaker gear to the inside of the third circuit breaker channel, contacts the upper end of the first channel circuit breaker ball, and moves the first channel circuit breaker ball up and down by rotation. A gear shaft ,
The remote position detecting device for a multi-rotation drive device according to claim 1, characterized in that The second hydraulic circuit breaker is
A second breaker body,
A fourth circuit breaker channel provided on one side of the second circuit breaker body and connected to the second hydraulic line;
A fifth circuit breaker channel provided at a position higher than the fourth circuit breaker channel on the other side of the second circuit breaker body, and connected to the multi-rotation drive;
The second circuit breaker body extends in the vertical direction, the lower part is connected to the fourth circuit breaker flow path, the upper part is connected to the fifth circuit breaker flow path, and the connection point with the fifth circuit breaker flow path Then, a sixth circuit breaker channel whose inner diameter is reduced,
A second flow path breaker ball accommodated in the sixth breaker flow path so as to be vertically movable and formed to have a diameter larger than the reduced diameter portion of the sixth breaker flow path;
A second circuit breaker gear provided on the upper side of the second circuit breaker body and rotating in conjunction with the multi-rotation drive;
A second circuit breaker that extends from the second circuit breaker gear to the inside of the sixth circuit breaker channel, contacts the upper end of the second channel blocker ball, and moves the second channel blocker ball in the vertical direction by rotation. A gear shaft ,
The remote position detecting device for a multi-rotation driving machine according to claim 2, characterized in that The multi-rotation drive machine is
A driving machine rotary shaft that is provided in the vertical direction and transmits a rotational force for opening and closing the valve;
A drive gear provided on the rotation axis of the drive machine and rotating in conjunction with the rotation axis of the drive machine,
The first hydraulic circuit breaker and the second hydraulic circuit breaker are arranged on both sides of the driving machine rotation shaft, and the first circuit breaker gear and the second circuit breaker gear are the rotation of the driving machine of the driving machine gear. Meshing with both sides facing each other across the shaft, rotating in conjunction with the rotation direction of the drive gear ,
The first circuit breaker gear shaft and the second circuit breaker gear shaft are threaded in opposite directions, and the first circuit breaker gear shaft rises in conjunction with the one-way rotation of the drive gear. The third circuit breaker flow path is cut off, the second circuit breaker gear shaft is lowered to open the sixth circuit breaker flow path, and the first circuit breaker gear is interlocked with the other direction rotation of the drive gear. The shaft according to claim 3, wherein the shaft is lowered to open the third circuit breaker channel, and the second circuit breaker gear shaft is raised to block the sixth circuit breaker channel. Remote position detection device for rotary drive.   When the first breaker gear shaft and the second breaker gear shaft are moved up and down, the first breaker gear and the second breaker gear are not separated from the drive gear. 5. The remote position detecting device for a multi-rotation driving machine according to claim 4, wherein a thickness of the first circuit breaker gear shaft and the second circuit breaker gear shaft is greater than a vertical movement amount. In a state where the valve is opened or shielded, the first hydraulic pressure value and the second hydraulic pressure value are the same,
In the fully opened state of the valve, the first hydraulic pressure value is higher than the second hydraulic pressure value,
2. The remote position detecting device for a multi-rotation driving machine according to claim 1, wherein the second hydraulic pressure value is higher than the first hydraulic pressure value when the valve is completely shielded. The solenoid valve is
In order to open the valve, the first hydraulic line is connected to a supply end of the hydraulic pump, and a first valve flow path is formed to connect the second hydraulic line to a recovery end of the hydraulic tank,
In order to shield the valve, the second hydraulic line is connected to the supply end of the hydraulic pump, and a second valve flow path is formed to connect the first hydraulic line to the recovery end of the hydraulic tank,
When the valve is fully opened and completely shielded, the other ends of the first hydraulic line and the second hydraulic line are blocked from the supply end of the hydraulic pump and the recovery end of the hydraulic tank to maintain the hydraulic pressure. The remote position detecting device for a multi-rotation driving machine according to claim 1, wherein a valve blocking path is formed.

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