JP2015125080A - Position attitude adjustor of accumulated object height measuring instrument and irradiation axis adjustment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust an irradiation axis of a radiation source part and a radiation detection part by arranging the radiation source part and the radiation detection part of an accumulated object height measuring instrument at a prescribed location.SOLUTION: Light reception marks (73) of a position attitude adjustor (68A) are arranged in parallel with an irradiation axis (60) in a radiation source part (20) and a radiation detection part (22). Beam emitters (70A, 70B) emit beams (72) at a right angle with respect to a set target of the irradiation axis (60). Distance measuring devices (70A, 70B) measure the distance between the radiation source part (20) and the radiation detection part (22). The position adjustment of the irradiation axis (60) in a Z-axis direction is performed by making the beams (72) match the light reception marks (73), and the position adjustment of the irradiation axis in a Y-axis direction is performed by using the distance measuring devices (70A, 70B). The attitude adjustment of the irradiation axis (60) around the Y-axis is performed by making the beams (72) match the light reception marks (73).

Description

  The present invention relates to a position / orientation adjuster and an irradiation axis adjusting method for a stored height measuring device using radiation.

  The water level in the steam drum used in the steam plant should be strictly monitored and managed in order to prevent so-called empty kettle burning and to prevent a drop in steam purity due to carry-over, and to perform efficient operation. Is required. Conventionally, a water level detector in a steam drum obtains a water level by measuring a differential pressure between a steam side introduction pipe (upper part) and a water side introduction pipe (lower part).

  However, since steam and water flow intermittently from the boiler into the steam drum, when these flow rates are large, dynamic pressure due to the water flow is applied to the water-side introduction pipe. Due to the influence of this dynamic pressure, the water level detector may detect higher or lower than the actual water level.

  In addition, if water enters the steam side introduction pipe, the head pressure of the water increases and the water level may be detected erroneously. As described above, in the water level measurement using the conventional water level detector, whether the detected water level accurately measures the water level in the steam drum or whether it is influenced by the dynamic pressure that fluctuates sequentially, There was a problem that the accuracy of the water level gauge was lowered or could not be distinguished.

  Japanese Patent Application Laid-Open No. 60-159502 discloses an invention of a water level control method for stabilizing the water level of a steam drum in a short time with a small deviation. The water level detector of the steam drum used in the water level control method of Patent Document 1 is a differential pressure type water level detector that measures a pressure difference between an upper part and a lower part in the steam drum.

JP-A-60-159502

  It is conceivable to use a radiation transmission amount measuring device as a measuring device capable of measuring the storage height of a storage material stored inside a storage container such as a steam drum from the outside of the storage container without contact.

  The radiation transmission amount measuring device includes a radiation source unit that emits radiation along an irradiation axis and a radiation detection unit that detects radiation, and a storage container is disposed between the radiation source unit and the radiation detection unit. The amount of radiation transmission is detected. The height of the reservoir can be measured from the outside of the storage container in a non-contact manner by utilizing the fact that the radiation transmission amount detected by the radiation detection unit varies depending on the presence or absence of the storage in the storage container.

  However, since the steam drum in the steam plant has a diameter of 1 to 3 m and a length of 5 to 10 m, the radiation detector can be seen from the radiation source side behind the shadow of the steam drum. Can not. Therefore, it has been difficult to efficiently perform position adjustment and posture adjustment between the irradiation axis from which the radiation source unit emits radiation and the irradiation axis on the radiation detection unit side in a short time in the field of the steam plant.

  The object of the present invention is to easily and accurately adjust the irradiation axes of the radiation source and radiation detectors when installing the radiation source and radiation detectors of the reservoir height measuring device. It is to provide a position / orientation adjuster and an irradiation axis adjusting method capable of performing the above.

  The means for solving the problem will be described below using the numbers used in the (DETAILED DESCRIPTION). These numbers are added to clarify the correspondence between the description of (Claims) and (Mode for Carrying Out the Invention). However, these numbers should not be used to interpret the technical scope of the invention described in (Claims).

  The position / orientation adjuster (68A, 68B) according to the present invention includes a light receiving mark (73), a light emitter (70A, 70B, 80), and a distance measuring device (70A, 70B, 82). The position and orientation adjusters (68A, 68B) are the irradiation axes (60) of the radiation source unit (20) and the radiation detection unit (22) in the radiation transmission amount measuring device that emits radiation along the irradiation axis (60). Is a device that performs adjustment to match the set target. The light reception mark (73) is arranged in the radiation source unit (20) and the radiation detection unit (22) in parallel with the irradiation axis (60). The light emitters (70A, 70B, 80) emit light rays (72) perpendicular to the set target of the irradiation axis (60). The distance measuring devices (70A, 70B, 82) measure the distance between the radiation source unit (20) and the radiation detection unit (22). Then, when the irradiation axis (60) is defined as the X axis, the vertical direction is defined as the Z axis, and the axis orthogonal to both the X axis and the Z axis is defined as the Y axis, the light spot irradiated with the light beam (72) is the light receiving mark. (73) to adjust the position of the irradiation axis (60) in the Y-axis direction or Z-axis direction with respect to the set target, and using the distance measuring devices (70A, 70B, 82), Adjust the position in the Y-axis direction. Further, by adjusting the light spot irradiated with the light beam (72) to the light receiving mark (73), the posture adjustment around the Z axis or Y axis of the irradiation axis (60) with respect to the set target is performed.

  The light receiving marks (73) are arranged at two positions separated by a predetermined distance, and the light emitters (70A, 70B) emit two light beams (72) separated by the same distance as the two light receiving marks (73). The distance measuring devices (70A, 70B) measure the distances from the light emitters (70A, 70B) to the light receiving marks (73) in the radiation source section (20) and the radiation detection section (22).

  Using the position / orientation adjuster (68A), the two light receiving marks (73) and the light spot irradiated with the light beam (72) are matched to adjust the position in the X-axis direction and the Z-axis direction, and The posture adjustment around the axis and the Z axis is performed, and the position adjustment in the Y axis direction is performed using the distance measuring devices (70A, 70B).

  Further, the light receiving marks (73) are formed at two places separated by a predetermined distance and at two places separated by a predetermined distance perpendicular to the irradiation axis (60). The light emitters (70A, 70B) emit light rays (72) separated by the same distance as the light receiving marks (73), and the distance measuring devices (70A, 70B) emit radiation rays from the light emitters (70A, 70B). The distance to the light reception mark (73) in the source part (20) and the radiation detection part (22) can be measured.

  Using the position and orientation adjuster, the position adjustment in the X-axis direction and the Z-axis direction and the orientation adjustment around the Y-axis are performed by matching the light receiving mark (73) with the light spot irradiated with the light beam (72). Then, the position adjustment in the Y-axis direction is performed using the distance measuring devices (70A, 70B), and the posture adjustment around the Z-axis and the X-axis is performed based on the difference in distance to the light receiving mark (73).

  The light emitter (80) of the position / orientation adjuster (68B) can emit a linear light beam (72).

  The light beam (72) emitted from the light emitter (80) is parallel to the Z-axis direction, and a water manometer (82) can be used as the distance measuring device (82).

  Furthermore, a level (74) and a leveling device (13) can be arranged in the radiation source section (20) and the radiation detection section (22). The level (74) detects the posture around the X axis and the Y axis in the radiation source unit (20) and the radiation detection unit (22), and the leveling unit (13) is the radiation source unit (20). And the posture around the X axis and the Y axis in the radiation detection unit (22) are adjusted.

  The irradiation axis adjustment method according to the present invention sets the irradiation axis (60) of the radiation source unit (20) and the radiation detection unit (22) in the radiation transmission amount measuring device that emits radiation along the irradiation axis (60). This is an adjustment method using position and orientation adjusters (68A, 68B) that perform adjustment to match the above. Here, the irradiation axis (60) is defined as the X axis, the vertical direction is defined as the Z axis, and an axis orthogonal to both the X axis and the Z axis is defined as the Y axis. The irradiation axis adjusting method according to the present invention includes a step of arranging the light receiving mark (73) in the radiation source unit (20) and the radiation detection unit (22) in parallel with the irradiation axis (60), and a position and orientation adjuster ( 68A, 68B) and the light emitters (70A, 70B, 80) of the position / orientation adjusters (68A, 68B) emit light (72) perpendicular to the set target of the irradiation axis (60). A step of emitting light, and a step of measuring the distance between the radiation source unit (20) and the radiation detection unit (22) by the distance measuring devices (70A, 70B, 82) of the position and orientation adjusters (68A, 68B). Including. Furthermore, the irradiation axis adjustment method according to the present invention adjusts the position of the irradiation axis (60) in the Y-axis direction or the Z-axis direction with respect to the set target by matching the light spot irradiated with the light beam (72) with the light receiving mark (73). , A step of adjusting the position in the Z-axis direction or the Y-axis direction using the distance measuring devices (70A, 70B, 82), and a light spot irradiated with the light beam (72) as the light receiving mark (73). And adjusting the posture of the irradiation axis (60) around the Z axis or around the Y axis with respect to the set target.

  By using the position and orientation adjuster and the irradiation axis adjustment method according to the present invention, the position and orientation of the storage height measuring device installed in the vicinity of the storage container such as a steam drum during operation is adjusted, and the irradiation axis is adjusted. Adjustments can be made to meet the set target. And it becomes possible to measure the storage height of the storage stored inside the storage container from the outside of the storage container in a non-contact manner using the storage height measuring device with the irradiation axis adjusted.

FIG. 1 is a view showing a state in which a reservoir height measuring device is disposed on the side of a steam drum using the position / orientation adjuster and the irradiation axis adjusting method of the present invention. It is side surface sectional drawing observed from. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 when the steam drum is observed from the longitudinal direction. FIG. 3 is a plan view of FIG. 1 in which the steam drum is observed from above. FIG. 4 is a side view for explaining another embodiment of the lifting mechanism and the lifting height measuring instrument. FIG. 5 is a flowchart for explaining an irradiation axis adjusting method of the stored height measuring device. FIG. 6 is a table for explaining a method for adjusting a deviation in each axial direction and around each axis in an irradiation axis adjusting method using biaxial light beams. FIG. 7 is a diagram for explaining an irradiation axis adjustment method using triaxial light beams. FIG. 8 is a flowchart showing a method for measuring the height of the stored product stored in the storage container using the stored product height measuring instrument. FIG. 9 is a diagram showing the relationship of the amount of radiation transmission with respect to the distance (measurement distance) between the radiation source section and the radiation detection section. FIG. 10 is a diagram showing the relationship between the amount of radiation transmission and the amount of deviation from the center of the irradiation axis. FIG. 11 is a diagram showing the relationship of the radiation transmission amount with respect to the deviation angle from the center of the irradiation axis. FIG. 12 is a diagram illustrating the relationship between the irradiation axis of the radiation transmission amount measuring device and the detection window. FIG. 13 is a diagram obtained by measuring the relationship between the water level stored in the storage container and the radiation transmission amount when the irradiation axis is the water level origin. FIG. 14 is a view showing another embodiment of the position / orientation adjuster of the present invention, and is a front view of the steam drum observed from the longitudinal direction. FIG. 15 is a plan view of FIG. 14 in which the storage height measuring instrument and the steam drum are observed from above.

  With reference to the attached drawings, a method of adjusting the irradiation axis 60 of the stored height measuring device 10 by arranging the stored height measuring device 10 on the side of the steam drum 30 will be described below.

  First, with reference to FIG. 1 thru | or FIG. 3, the position / orientation adjuster 68A which concerns on this invention, the stored object height measuring device 10, and the steam drum 30 of a measuring object are demonstrated.

  FIG. 1 is a diagram illustrating a situation in which the position and orientation of the storage height measuring instrument 10 disposed on the side of the steam drum 30 is adjusted using the position and orientation adjuster 68A. FIG. 1 is a side sectional view of the steam drum 30 observed from the side in the longitudinal direction. 2 and 3 are a cross-sectional view and a plan view taken along the line AA when the steam drum 30 shown in FIG. 1 is observed from the longitudinal direction. Further, as shown in FIG. 3, the radiation irradiation axis 60 in the radiation ray source unit 20 and the radiation detection unit 22 of the radiation transmission amount measuring device is defined as the X axis. Then, the vertical direction is defined as the Z axis, and an axis orthogonal to both the X axis and the Z axis is defined as the Y axis.

  A steam drum 30 shown in FIGS. 1 to 3 is a boiler cylinder (also called an air / water cylinder or an upper drum) that is provided at an upper part of a boiler in a steam plant and takes out steam.

  A plurality of pipes 32, a steam side introduction pipe 41, a water side introduction pipe 42, and differential pressure type water level gauges 40 </ b> N and 40 </ b> S are connected to the steam drum 30. Inside the steam drum 30, a lower baffle plate 34, an upper baffle plate 36, and a steam / water separator 38 are disposed. Inside the steam drum 30, water 31 is stored so as to be between the upper limit water level (NWL + 200) and the lower limit water level (NWL-80). A heat insulating material and an exterior material (not shown) are attached to the outer periphery of the body portion of the steam drum 30. In addition, a scaffold 9 for installing the storage height measuring device 10 is installed at the lower side portion of the steam drum 30.

  The steam drum 30 is a metal cylindrical pressure vessel. The plurality of pipes 32 connected to the steam drum 30 are composed of a water supply pipe, a saturated steam discharge pipe, a safety valve, a precipitation pipe, a slow heat pipe, and the like. The steam side introduction pipe 41 and the water side introduction pipe 42 are connected to differential pressure type water level gauges 40N and 40S, respectively. The differential pressure type water level meters 40N and 40S are devices that constantly measure the water level of the water 31 stored in the steam drum 30.

  The differential pressure type water level meters 40N and 40S are connected to the inside of the steam drum 30 via the steam side introduction pipe 41 and the water side introduction pipe 42, and measure the pressure difference between the steam side introduction pipe 41 and the water side introduction pipe 42. Then, the water level of the water 31 stored in the steam drum 30 is measured. When the steam plant is in operation, there are many bubbles due to boiling, particularly in the water 31 or on the surface of the water 31 where the lower baffle plate 34 is disposed. It is also conceivable that the water level is inclined in the steam drum 30 due to the water flow.

  Since the inside of the steam drum 30 is kept at a high temperature and high pressure during operation of the steam plant, a glass tube type water level meter with a simple structure and high reliability cannot be used. Therefore, differential pressure type water level gauges 40N and 40S are used.

  The lower baffle plate 34, the upper baffle plate 36, and the steam / water separator 38 arranged inside the steam drum 30 are devices for separating boiling water and steam and taking out only the steam from the upper pipe 32. It is.

  The reservoir height measuring device 10 shown in FIG. 1 and FIG. 2 is a storage container to be measured (see FIG. 1 to FIG. 3) when it becomes necessary to calibrate the differential pressure type water level gauges 40N and 40S at the time of periodic inspection. In the embodiment shown, it is a device that measures the water level of the water 31 stored in the storage container in a non-contact manner, facing the both sides of the steam drum 30.). In addition, the storage height measuring device 10 can synchronize the ascending / descending operation of the radiation ray source unit 20 and the radiation detecting unit 22 of the radiation transmission measuring device and can measure the elevation height of the radiation transmission measuring device. It has a configuration.

  The storage height measuring device 10 includes a pair of bases 11, a column 12, lifting height measuring devices 14 </ b> A and 14 </ b> B, and a lifting mechanism 16. The storage height measuring device 10 includes a storage height calculator 18, a display unit 19, a radiation source unit 20, a radiation detection unit 22, a leveling unit 13, and a level 74. Yes.

  The storage height measuring instrument 10 has a column 12 fixed vertically to the base 11. The base 11 is provided with a leveling unit 13 for standing the column 12 vertically. The leveling device 13 disposed in the storage height measuring instrument 10 is arranged around the X axis (roll direction with respect to the irradiation axis 60) and around the Y axis (pitch with respect to the irradiation axis 60) in order to align the irradiation axis 60 horizontally. Direction.). The level 74 arranged in the storage height measuring device 10 is a device that measures whether or not the irradiation axis 60 is horizontal. The level 74 can be arranged as required.

  The column 12 has a guide for guiding the elevating mechanism 16 so as to be movable up and down in the vertical direction. Each of the two lifting mechanisms 16 is provided with a drive mechanism, and can perform a synchronized lifting operation based on an instruction from the storage height calculator 18.

  The column 12 is provided with a lifting height measuring device 14A such as a non-contact scale, and the lifting mechanism 16 is provided with a lifting height measuring device 14B such as a reading head. By using the elevation height measuring devices 14A and 14B, the elevation height of the elevation mechanism 16 with respect to the base 11 or the column 12 can be measured, and the result can be output to the storage height calculator 18.

  The storage height calculator 18 drives and controls the drive mechanism using the acquired elevation height of the elevation mechanism 16. When an open loop drive / positioning mechanism such as a stepping motor is used as the drive mechanism of the lift mechanism 16, the lift height measuring devices 14A and 14B are omitted, and an origin sensor or the like is disposed instead.

  The display unit 19 displays various setting information and measurement results in the stored height measuring device 10 based on instructions from the stored height calculator 18. In addition, information and commands can be input from the user as a touch panel.

  Of the pair of reservoir height measuring devices 10 disposed on both sides of the steam drum 30, the radiation mechanism 20 that emits radiation is disposed on one lifting mechanism 16. The other lifting mechanism 16 is provided with a radiation detection unit 22 that detects the amount of radiation transmitted from the radiation source unit 20 and transmitted through the storage container (in the steam drum 30).

  The radiation emitted from the radiation source 20 is transmitted through the side wall of the steam drum 30, the stored water 31, piping in the steam drum 30, structures such as the lower baffle plate 34, and the like, and the radiation detection unit 22. Will detect. At this time, since the amount of transmitted radiation is different depending on whether or not water 31 is present, the radiation is changed while changing the height of the radiation transmission amount measuring device composed of the radiation source unit 20 and the radiation detecting unit 22. By detecting the permeation amount, the water level of the water 31 stored in the steam drum 30 in operation can be measured from the outside of the steam drum 30 in a non-contact manner. And it can be used for the calibration of the differential pressure type water level gauges 40N and 40S.

  As shown in FIGS. 1 to 3, a plurality of structures exist inside the steam drum 30. In the storage height measuring instrument 10, the water level of the water 31 can be measured even if there are structures such as the outer wall of the steam drum 30 and the lower baffle plate 34. However, when there are many other pipes 32 and brackets, it is predicted that the measurement error of the water level will increase, so that it is difficult to be affected by the structure by referring to the drawing of the steam drum 30 in advance. It is preferable to set the installation position 8 (measurement range).

  Gamma rays and neutron rays can be used as radiation used in the radiation transmission amount measuring device. An authentication device with a display is commercially available as a radiation transmission amount measuring device using gamma rays. This radiation transmission amount measuring device is not required by the person in charge of radiation handling, does not need to set a management area, and is excellent in safety, workability, and availability. In a radiation transmission amount measuring device using a neutron beam, a substance having a high density of neutron rays is transmitted and easily absorbed by water, which is advantageous for measuring a water level in a structure.

  The position / orientation adjuster 68A shown in FIGS. 1 and 3 is an apparatus used when adjusting the irradiation axis 60 of the radiation source unit 20 and the radiation detection unit 22 with respect to the setting target of the irradiation axis 60. The setting target of the irradiation axis 60 is set to a predetermined height of the installation position 8 in the storage container to be measured (in the embodiment shown in FIGS. 1 to 3, the steam drum 30).

  In general, the position / orientation adjuster 68 </ b> A is disposed on the scaffold 9. The position / orientation adjuster 68A includes light transmitters / receivers 70A and 70B (light emitters and distance measuring devices). Further, the leveling unit 13 and the level 74 can be disposed in the light transmitter / receivers 70A and 70B as necessary. On the storage height measuring instrument 10 side, a mark 73 (light receiving mark) of the position / orientation adjuster 68A is provided.

  The light transmitters / receivers 70A and 70B (light emitters) are perpendicular to the target set for the irradiation axis 60 of the radiation source 20 and the radiation detector 22 (in the Y-axis direction in the examples shown in FIGS. 1 and 3). A light beam 72 (laser or the like) is emitted. Further, the light transmitter / receivers 70A and 70B (ranging devices) can measure the distance in the Y-axis direction between the radiation source unit 20 and the radiation detection unit 22. Thereby, the irradiation axis 60 of the radiation source part 20 and the radiation detection part 22 can be matched with the setting target of the irradiation axis 60. As a distance measuring method using the light transmitter / receivers 70A and 70B, a distance meter using a laser can be used.

  The light receiving marks 73 (see FIG. 6 described in detail later for the arrangement) are arranged in parallel to the irradiation axes 60 of the radiation source section 20 and the radiation detection section 22, respectively. The position and posture of the irradiation axis 60 with respect to the set target of the irradiation axis 60 can be adjusted by matching the received light mark 73 with the light spot of the light beam 72 emitted by the light transmitters / receivers 70A and 70B.

  The level 74 arranged in the light transmitter / receivers 70A and 70B is a measuring device used when the light beam 72 emitted from the light transmitter / receivers 70A and 70B is leveled. The leveling unit 13 disposed in the light transmitter / receivers 70A and 70B is a device for horizontally adjusting the light beam 72 emitted by the light transmitter / receivers 70A and 70B.

  In the embodiment shown in FIG. 3, the light transmitter / receiver 70 </ b> A emits two light beams 72 in the direction of the set target of the storage height measuring device 10 in parallel with the Y axis, and also emits two light beams 72 in the X axis direction. Adjustment is performed so that the light receiving mark 73 and the light spot of the light beam 72 coincide with the light receiving mark 73 arranged on the XZ plane of the light transmitter / receiver 70B. Accordingly, the light beams 72 emitted from the light transmitter / receivers 70A and 70B can be adjusted in parallel, and the positions of the light transmitter / receiver 70A and the light transmitter / receiver 70B in the Z-axis direction and the Y-axis direction can be adjusted. The transmitter / receiver 70A, 70B can be configured integrally.

  Next, another embodiment of the lifting mechanism and the lifting height measuring device in the stored height measuring device will be described with reference to FIG. In FIG. 1 to FIG. 3, an embodiment of the storage height measuring device 10 using the direct acting lifting mechanism 16 and the lifting height measuring devices 14 </ b> A and 14 </ b> B is shown. When the range of the storage height of the storage stored in the storage container is limited, the storage height using the pantograph lift mechanism 116 or the stepping motor 117 as shown in FIG. A measuring device 110 can be used.

  4 is arranged on the scaffold 9 and raises and lowers the radiation source unit 20 and the radiation detector 22 of the radiation transmission measuring device in synchronization with each other. It is a device that measures the elevation height.

  The storage height measuring device 110 includes a lifting mechanism 116, a stepping motor 117, a lifting height measuring device 114, a pulse generator 115, a storage height calculator 118, a display unit 19, and a leveling device 13. , And a spirit level 74.

  The elevating mechanism 116 has a pantograph type elevating guide mechanism and a drive mechanism including a stepping motor 117. By driving the stepping motor 117 in pulses, the elevating operation according to the number of pulses can be performed to set the radiation transmission amount measuring device to a predetermined elevating height.

  The pulse generator 115 generates a driving pulse for the stepping motor 117 according to the number of pulses acquired from the storage height calculator 118. Then, the drive pulse is output to the stepping motor 117.

  The lifting / lowering height measuring device 114 is a counter that acquires and accumulates driving pulses from the storage height calculator 118 and stores the lifting / lowering height.

  The storage height calculator 118 outputs a pulse corresponding to the lift amount to the pulse generator 115 and the lift height measuring instrument 114. Further, the storage height calculator 118 can acquire the elevation height from the elevation height measuring instrument 114.

  The display unit 19 displays various setting information and measurement results in the stored height measuring device 110 based on instructions from the stored height calculator 118. In addition, information and commands can be input from the user as a touch panel.

  The radiation beam source unit 20 and the radiation detection unit 22 of the stored height measuring device 110 are provided with a leveling unit 13 used when the irradiation axis 60 is set horizontally. The leveler 13 is a device that adjusts around the X axis (the roll direction with respect to the irradiation axis 60) and around the Y axis (the pitch direction with respect to the irradiation axis 60) in order to align the irradiation axis 60 horizontally.

  When the range of the storage height of the storage stored in the storage container is limited, the storage height measuring instrument 110 can be adjusted by using a compact lifting mechanism 116 as shown in FIG. It can be downsized. In addition, the configuration can be simplified by using the elevation height measuring device 114 configured by an integrating counter instead of the elevation height measuring devices 14A and 14B such as the linear scale shown in FIG. .

  Next, an irradiation axis adjustment method using the position / orientation adjuster 68A of the present invention will be described with reference to FIG. FIG. 5 is a flowchart showing an irradiation axis adjustment method of the storage height measuring devices 10 and 110.

  First, in step S2 “level adjustment of the position / orientation adjuster”, the user places the position / orientation adjuster 68A on the scaffold 9 so that the light beam 72 is emitted at right angles to the set target of the irradiation axis 60. Then, the level of the position / orientation adjuster 68A is adjusted. Here, for example, using the level 74 and the leveling unit 13, the position / orientation adjuster is configured so that the light beam 72 is emitted at a predetermined height (a predetermined position in the Z-axis direction) parallel to the Y-axis. 68A level adjustment and position adjustment are performed.

  In the next step S4 “Adjusting the radiation axis of the radiation source unit” and Step S6 “Adjusting the irradiation axis of the radiation detection unit”, the user sets the irradiation axes 60 of the radiation source unit 20 and the radiation detection unit 22 to the set target. Make adjustments to match. Here, by using the adjustment method of the deviation in each axial direction and each axis shown in FIG. 6, the position adjustment in the X axis direction, the Y axis direction, and the Z axis direction, and the X axis direction, the Y axis direction, and the Z axis are performed. Adjustments can be made around the axis.

  In the irradiation axis adjustment method using the biaxial light beam 72 shown in FIG. 6, the received light mark 73 is parallel to the irradiation axis 60 and separated by a predetermined distance in the radiation source unit 20 and the radiation detection unit 22. It is arranged in each place. The light emitters of the light transmitters / receivers 70A and 70B emit two light beams 72 that are separated by the same distance as the two light receiving marks 73, respectively. The distance measuring devices of the light transmitter / receivers 70A and 70B can measure the distance from the light emitter to the light reception mark 73 in the radiation source 20 and the radiation detector 22.

Hereinafter, an irradiation axis adjustment method using the biaxial light beam 72 shown in FIG. 6 will be described.
(1) When the irradiation axis 60 is deviated in the X-axis direction, the distance between the two points of the two laser points (light points of the light beam 72) and the two marks 73 is equal, and the respective centers A line connecting the two is observed with being shifted parallel to the X-axis direction. When observed in this way, the radiation beam source unit 20 or the radiation detection unit 22 is moved in the X-axis direction so as to adjust the light spot of the light beam 72 and the light reception mark 73 to coincide with each other.
(2) When the irradiation axis 60 is deviated around the X axis, the distance between the two points of the two laser points (light points of the light beam 72) and the two marks 73 is equal, and the respective centers A line connecting the two is observed with being shifted parallel to the Z-axis direction. When observed in this way, the radiation source unit 20 or the radiation detection unit 22 is rotated around the X axis so that the light spot of the light beam 72 and the light reception mark 73 are aligned.
(3) When the irradiation axis 60 is displaced in the Y-axis direction, the distance between the two laser points (light points of the light beam 72) and the two marks 73 are equal and coincide with each other. Observed. When observed in this way, no deviation in the X-axis direction, deviation around the X-axis, deviation around the Y-axis, deviation in the Z-axis direction, and deviation around the Z-axis are not observed. However, there may be a shift in the Y-axis direction. The deviation in the Y-axis direction is measured using the distance measuring devices of the light transmitter / receivers 70A and 70B. Then, the radiation ray source unit 20 or the radiation detection unit 22 is moved in the Y-axis direction so that the distances from the radiation ray source unit 20 and the radiation detection unit 22 to the irradiation axis 60 are adjusted.
(4) When the irradiation axis 60 is deviated around the Y axis, the distance between the two points of the two laser points (light points of the light beam 72) and the two marks 73 are equal, and the respective centers Lines that connect are not parallel. When observed in this way, the radiation level source unit 20 or the radiation detection unit 22 is rotated around the Y axis by adjusting the leveling unit 13 of the reservoir height measuring devices 10 and 110, and the light beam Adjustment is made so that the light spot 72 and the light receiving mark 73 coincide with each other.
(5) When the irradiation axis 60 is displaced in the Z-axis direction, the distance between the two points of the two laser points (light points of the light beam 72) and the two marks 73 are equal, and the respective centers A line connecting the two is observed with being shifted parallel to the Z-axis direction. When observed in this way, the radiation source section 20 or the radiation detection section 22 is moved in the Z-axis direction so that the light spot of the light beam 72 and the received light mark 73 are adjusted.
(6) When the irradiation axis 60 is shifted around the Z axis, the distance between the two laser points (light points of the light beam 72) is longer than the distance between the two points 73 of the two marks 73. A line connecting the centers is observed parallel to the X-axis direction. When observed in this way, the radiation source unit 20 or the radiation detection unit 22 is rotated around the Z axis so that the light spot of the light beam 72 and the received light mark 73 coincide with each other.

  As shown in FIG. 6, by aligning the two light receiving marks 73 with the light spot irradiated with the light beam 72, the position adjustment in the X-axis direction and the Z-axis direction, the X-axis rotation, the Y-axis rotation, and the Z-axis rotation are performed. While adjusting the attitude around the axis, the position adjustment in the Y-axis direction can be performed using a distance measuring device. In addition to the method shown in FIG. 6, the posture adjustment around the Z axis can be performed based on the difference in distance to the two light receiving marks 73.

  Next, the irradiation axis adjustment method using the triaxial light beam 72 will be described with reference to FIG. In FIG. 6, the irradiation axis adjustment method using the biaxial light beam 72 has been described. However, in FIG. 7, in addition to the two marks 73 and the light beam 72 that are parallel to the irradiation shaft 60 and separated by a predetermined distance, A mark 73 and a light beam 72 that form two positions that are perpendicular to 60 and separated by a predetermined distance are arranged.

  Also by using the arrangement of the three-axis light beam 72 and the mark 73 shown in FIG. 7, it is possible to adjust the irradiation axis 60 of the stored height measuring device to the set target. Further, the posture adjustment around the Z axis and the X axis can be performed based on the difference in distance to the three light receiving marks 73.

  Next, a method for measuring the height of the stored object using the stored object height measuring devices 10 and 110 will be described with reference to FIG. FIG. 8 is a flowchart showing a method for measuring the height of the stored product stored in the storage container.

  In step S10 “moving the lifting mechanism to the measurement upper end”, the storage height calculator 18 outputs an instruction to move both the lifting mechanisms 16 to the measurement upper end. As the upper end of measurement, the ascending end of the elevating mechanism 16 can be used, or an upper limit can be set in advance so that no stored substance exists at a higher height.

  In step S12 “lowering the lifting mechanism by a predetermined amount”, the storage height calculator 18 outputs an instruction to lower and stop the lifting mechanism 16 with a predetermined distance (measurement pitch) in a synchronized state.

  In step S14 “detection and recording of radiation transmission amount”, the storage height calculator 18 emits radiation from the radiation source 20 and transmits through the steam drum 30 with both the lifting mechanisms 16 stopped. The radiation is detected using the radiation detection unit 22. Then, the detected radiation transmission amount and the height of the lifting mechanism 16 are associated with each other and recorded in a storage device arranged in the storage height calculator 18. Here, it is also possible to detect the radiation transmission amount a plurality of times, calculate an average value, and calculate the stored height of the stored matter using the average value.

In step S16 “Calculation of stored reservoir height (A)”, the stored height calculator 18 calculates the stored height using the radiation transmission amount detected in S14. For example, the calculation methods of Cases 1 to 3 shown below can be considered as the calculation method of the storage height.
(Case 1)
The threshold value of the radiation transmission amount set in advance and the radiation transmission amount detected in S14 are compared, and when the radiation transmission amount is smaller than the threshold value, it is determined that there is a stored object, A calculation method for determining that the upper end of the stored object exists between the elevation height.
(Case2)
The amount of change in the amount of radiation transmission for each elevation is calculated, and the calculated amount of change is compared with a preset amount of change threshold. When the amount of change is greater than the threshold, it is determined that there is a reservoir. And the calculation method which judges that the upper end of a stored object exists between the last raising / lowering height and this raising / lowering height.
(Case3)
A calculation method for representing the value of the amount of radiation transmission for each elevation height as a curve, calculating the inflection point of this curve, and determining the elevation height at this inflection point as the storage height of the stored matter.

  In the case of using the above (Case 1) calculation method, in step S16, the threshold value of the radiation transmission amount is compared with the radiation transmission amount. If the radiation transmission amount is smaller than the threshold value, there is a reservoir. to decide. Then, it is determined that the upper end of the stored object exists between the previous lifting height and the current lifting height.

  When the above (Case 2) calculation method is used, in step S16, a change amount of the radiation transmission amount for each elevation height is calculated, and the calculated change amount and a preset change amount threshold value are obtained. In comparison, if the amount of change is greater than the threshold value, it is determined that there is a reservoir. Then, for example, it is determined that the upper end of the stored object exists between the previous lifting height and the current lifting height.

  When the above (Case 3) calculation method is used, calculation is not performed in step S16, but calculation is performed in step S20 in the subsequent stage.

  In step S18 “measurement lower end?”, The storage height calculator 18 determines whether or not the elevation height of the elevation mechanism 16 has reached the measurement lower end. If the elevation height of the elevation mechanism 16 has not reached the measurement lower end, the process branches back to step S12, and the radiation transmission amount is detected again. If the elevation height of the elevation mechanism 16 has reached the lower end of measurement, the measurement of the amount of transmitted radiation is terminated and the process proceeds to step S20.

  In step S20 “Calculation of stored reservoir height (B)”, the storage height calculator 18 calculates the storage height by the calculation method of (Case 3) using the radiation transmission amount detected in step S14. I do. In addition, when using the calculation method of said (Case1) and (Case2), calculation of the storage height is not performed in step S20.

  In step S20, the storage height calculator 18 uses the radiation transmission amount detected in step S14 to represent the value of the radiation transmission amount for each elevation height as a curve, and calculates the inflection point of this curve. And the raising / lowering height in this inflection point is obtained, and this raising / lowering height is made into the storage height of a stored matter.

  In step S <b> 22 “display / output of stored reservoir height”, the stored height calculator 18 displays the stored reservoir height calculated in step S <b> 16 or step S <b> 20 on the display unit 19. In addition, information such as the storage height of the storage can be output to other devices via an output unit (not shown).

  Next, the results of the radiation transmission amount measurement will be described with reference to FIGS. 9 to 13. A gamma ray level meter TH-100 manufactured by Nano Gray Co., Ltd. using a scintillation detector was used as a radiation transmission amount measuring device.

  First, with reference to FIG. 9, the measurement result of the radiation transmission amount with respect to the measurement distance when the distance (measurement distance) between the radiation source unit 20 and the radiation detection unit 22 is changed will be described. FIG. 9 is a diagram illustrating the relationship between the distance (measurement distance) between the radiation source unit 20 and the radiation detection unit 22 and the radiation transmission amount. In the measurement shown in FIG. 9, since the purpose is to confirm the relationship between the measurement distance and the amount of radiation transmission, no radiation attenuation object such as the steam drum 30 is disposed, and the radiation source unit 20 The emitted radiation reaches the radiation detection unit 22 directly.

  The vertical axis of the diagram shown in FIG. 9 is the amount of radiation transmitted detected using the radiation source unit 20 and the radiation detection unit 22. Further, the horizontal axis of the diagram shown in FIG. 9 is an interval (measurement distance) between the radiation source unit 20 and the radiation detection unit 22. In FIG. 9, for convenience of explanation, a curve that is inversely proportional to the square of the measurement distance is represented as an estimated value on the basis of the radiation transmission amount when the measurement distance is 2000 mm.

  Generally, it is known that the radiation transmission amount is inversely proportional to the square of the interval (measurement distance) between the radiation source unit 20 and the radiation detection unit 22. The measurement results shown in FIG. 9 are the results along the estimated value curve.

  Next, with reference to FIG. 10, the measurement result of the radiation transmission amount when the irradiation axes 60 of the radiation beam source unit 20 and the radiation detection unit 22 are shifted in parallel will be described. FIG. 10 is a diagram showing the relationship between the amount of radiation transmission (vertical axis) and the amount of deviation (horizontal axis) from the center of the irradiation axis 60. Also in the measurement shown in FIG. 10, no radiation attenuation object such as the steam drum 30 is disposed, and the radiation emitted from the radiation source unit 20 reaches the radiation detection unit 22 directly.

  As shown in FIG. 10, when the amount of deviation of the irradiation axis 60 between the radiation source unit 20 and the radiation detection unit 22 is 50 mm or less, there is no significant change in the amount of transmitted radiation. Decrease. Therefore, it is preferable that the amount of deviation of the irradiation axis 60 between the radiation source unit 20 and the radiation detection unit 22 is adjusted and set so as to be 50 mm.

  Next, with reference to FIG. 11, the measurement result of the radiation transmission amount when the angle of the irradiation axis 60 between the radiation source unit 20 and the radiation detection unit 22 is shifted will be described. FIG. 11 is a diagram showing the relationship of the amount of radiation transmission (vertical axis) with respect to the deviation angle (horizontal axis) from the center of the irradiation axis 60. Also in the measurement shown in FIG. 11, the radiation attenuation target such as the steam drum 30 is not arranged, and the radiation emitted from the radiation source unit 20 reaches the radiation detection unit 22 directly.

  As shown in FIG. 11, it can be seen that there is no significant change in the amount of radiation transmitted due to the deviation angle of the irradiation axis 60 between the radiation source 20 and the radiation detector 22. Therefore, it is sufficient to set the deviation angle of the irradiation axis 60 between the radiation source 20 and the radiation detector 22 within 30 °, more preferably within 10 °.

  Next, the result of measuring the relationship between the water level of the water 31 stored in the steam drum 30 and the radiation transmission amount will be described. FIG. 12 is a diagram showing the relationship between the irradiation axis 60 and the detection window of the radiation transmission amount measuring instrument used for the measurement. FIG. 13 is a diagram in which the relationship between the water level of the water 31 stored in the steam drum 30 and the radiation transmission amount when the irradiation axis 60 is the water level origin is measured.

  Referring to FIG. 12, the detection window of the radiation transmission measuring device used in the experiment has a circular shape of about 60 mm with the irradiation axis 60 as the center. Therefore, the radiation transmission amount was measured by changing the water level of the water 31 stored in the steam drum 30 from -80 mm to +70 mm every 5 mm with the irradiation axis 60 as the water level origin. The result is shown in FIG.

Referring to FIG. 13, when the water level of water 31 stored in steam drum 30 is changed from −80 mm to +70 mm with respect to the water level origin, it can be seen that the radiation transmission amount draws an S-shaped curve. According to the experimental results shown in FIG. 13, it is considered that the following criteria can be used as a criterion for determining the presence or absence of water 31 (for example, a criterion for determining whether or not the water level is higher than the origin).
(Case 1) A threshold value of radiation transmission amount or radiation attenuation rate (in the example shown in FIG. 13, for example, 150 Count / sec) is set in advance, and the threshold value of the radiation transmission amount is compared with the detected radiation transmission amount for storage. Calculate the storage height of objects.
(Case 2) The amount of change in radiation transmission amount is calculated for each elevation height (for each water level in the example shown in FIG. 13), and the calculated change amount is compared with a preset change amount threshold value. Calculate the storage height.
(Case 3) The value of the radiation transmission amount for each elevation height (for each water level in the example shown in FIG. 13) is represented by a curve, the inflection point of this curve is calculated, and the elevation height at this inflection point is stored. Calculation to determine the storage height of the.

  In addition, an approximate curve and a multi-order curve can be used for the curve showing the value of the radiation transmission amount for every elevation height. In (Case 2), when calculating the amount of change in the amount of radiation transmission for each elevation height and comparing it with a preset threshold value for the variation amount, the range of elevation height exceeding the predetermined threshold value is obtained. And the calculation which determines the center of the range of this raising / lowering height as the storage height of a stored thing can also be performed. By using the measurement method described above, it can be estimated that the storage height of the storage in the storage container can be measured with a measurement accuracy of at least 30 mm.

  In this way, by using the storage height measuring devices 10 and 110, the storage height of the water 31 stored in a large storage container such as the steam drum 30 in operation is measured, The water level gauge can be calibrated.

  Next, another embodiment of the position / orientation adjuster of the present invention will be described with reference to FIGS. 14 and 15. FIG. 14 is a front view of the position / orientation adjuster 68B, the storage height measuring device 10, and the steam drum 30 observed from the longitudinal direction. FIG. 15 is a plan view of FIG. 14 when adjusting the position and orientation of the storage height measuring device 10 using the position and orientation adjuster 68B of the present invention. In addition, about the member which has the same function as the member described in FIG. 1 thru | or FIG. 3, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the embodiment shown in FIG. 6 and FIG. 7, the position and orientation adjustment is performed using the biaxial or triaxial light beam 72 to match the irradiation axes 60 of the radiation source unit 20 and the radiation detection unit 22 with the set target. On the other hand, in FIG. 14 and FIG. 15, the position and orientation adjustment is performed by using the linear light beam 72 to match the irradiation axes 60 of the radiation source unit 20 and the radiation detection unit 22 with the set target.

  The position / orientation adjuster 68 </ b> B includes a light emitter 80 disposed across the steam drum 30 above the storage height measuring instrument 10, and a water manometer 82 (ranging device). Further, a leveling device and a level 74 can be arranged in the light emitter 80 as necessary. As shown in FIG. 15, a mark 73 (light receiving mark) of the position / orientation adjuster 68 </ b> B is provided on the upper surface of the stored object height measuring device 10.

  The light emitter 80 is a linear light beam 72 (in the Z-axis direction in the embodiment shown in FIGS. 14 and 15) perpendicular to the set target of the irradiation axis 60 of the radiation source unit 20 and the radiation detection unit 22. Laser). Further, the distance in the Z-axis direction between the radiation source unit 20 and the radiation detection unit 22 is measured using the water level of the water manometer 82 (ranging device), and the irradiation axis 60 and the radiation detection unit 22 of the radiation source unit 20 are measured. Are aligned with each other in the Z-axis direction. Further, instead of the water manometer 82, a distance meter using a laser can be used.

  The received light marks 73 shown in FIG. 15 are arranged in parallel (X-axis direction) to the irradiation axes 60 of the radiation source unit 20 and the radiation detection unit 22, respectively. By matching the light reception mark 73 with the light spot of the light beam 72 emitted by the light emitter 80, the position and orientation of the irradiation axis 60 with respect to the set target of the irradiation axis 60 can be adjusted.

  The level 74 of the light emitter 80 is a device that measures that the light 72 emitted from the light emitter 80 is emitted vertically.

The irradiation axis adjustment method using the position / orientation adjuster 68B shown in FIGS. 14 and 15 will be described below.
(1) Whether or not the irradiation axis 60 is displaced in the X-axis direction cannot be detected using the light spot of the linear light beam 72 and the two marks 73. However, even if the irradiation axis 60 is deviated in the X-axis direction, there is no significant effect on the measurement of the storage height of the stored material, so adjustment in the X-axis direction can be omitted.
(2) Whether or not the irradiation axis 60 is displaced around the X axis cannot be detected using the light spot of the linear light beam 72 and the two marks 73. However, even if the irradiation axis 60 is deviated around the X axis, there is no effect on the measurement of the storage height of the stored matter, so adjustment around the X axis can be omitted. In addition, the adjustment around the X axis can be performed using the level 74 and the leveling unit 13 of the stored height measuring device 10.
(3) When the irradiation axis 60 is shifted in the Y-axis direction, the linear light spot of the light beam 72 and the two marks 73 are observed shifted in parallel to the Y-axis direction. When observed in this way, the radiation source unit 20 or the radiation detection unit 22 is moved in the Y-axis direction so that the linear light spot of the light beam 72 and the two marks 73 coincide with each other. To do.
(4) Whether or not the irradiation axis 60 is shifted around the Y axis cannot be detected using the light spot of the linear light beam 72 and the two marks 73. Adjustment around the Y axis is performed using the level 74 and the leveling unit 13 of the stored height measuring device 10.
(5) Whether or not the irradiation axis 60 is displaced in the Z-axis direction cannot be detected using the light spot of the linear light beam 72 and the two marks 73. Adjustment in the Z-axis direction is performed using a water manometer 82 (ranging device).
(6) When the irradiation axis 60 is displaced around the Z axis, the linear light spot of the light beam 72 and the two marks 73 are not parallel. When observed in this way, the radiation source section 20 or the radiation detection section 22 is rotated in the Z-axis direction so that the linear light spots of the light beam 72 and the two marks 73 coincide with each other. To do.

  As shown in FIG. 14 and FIG. 15, the position adjustment in the Y-axis direction and the posture adjustment around the Z-axis are performed by matching the two light receiving marks 73 with the light spot irradiated with the linear light beam 72. And the posture adjustment around the Y axis and the X axis is performed by using the level 74 and the leveling device 13 arranged in the storage height measuring device 10. Further, the position adjustment in the Z-axis direction is performed using a distance measuring device (water manometer 82).

  The position / orientation adjuster and the irradiation axis adjustment method according to the present invention have been described above with reference to the embodiments. However, the position / orientation adjuster and the irradiation axis adjustment method according to the present invention are not limited to the above embodiments. Various modifications can be made to the above embodiment. It is possible to combine the matters described in the above embodiment with the matters described in the other embodiments.

DESCRIPTION OF SYMBOLS 10 ... Reservoir height measuring device 11 ... Base 12 ... Column 14A, 14B ... Elevating height measuring device 16 ... Elevating mechanism 18 ... Reserving height calculator 19 ... Display unit 20 ... Radiation ray source unit 22 ... Radiation detection unit 30 ... Steam drum 31 ... Water 34 ... Lower baffle plate 36 ... Upper baffle plate 38 ... Steam-water separator 40N, 40S ... Differential pressure type water level gauge 60 ... Irradiation axis 68A, 68B ... Position and orientation adjusters 70A, 70B ... Transmitter / receiver (light emitter, distance measuring device)
72 ... light 73 ... mark (light receiving mark)
74 ... Level 80 ... Light emitter 82 ... Water manometer (ranging device)
DESCRIPTION OF SYMBOLS 110 ... Storage height measuring device 116 ... Elevating mechanism 117 ... Stepping motor 114 ... Elevating height measuring device 115 ... Pulse generator 118 ... Storage height calculator

Claims (16)

A light receiving mark,
A light emitter,
A position / orientation adjuster that adjusts the radiation axes of the radiation source unit and radiation detection unit to a set target in a radiation transmission amount measuring device that emits radiation along the irradiation axis. ,
The light receiving mark is disposed in parallel to the irradiation axis in the radiation source unit and the radiation detection unit,
The light emitter emits light at right angles to the set target of the irradiation axis;
The distance measuring device measures the distance between the radiation source unit and the radiation detection unit,
When the irradiation axis is defined as the X axis, the vertical direction is defined as the Z axis, and the axis perpendicular to both the X axis and the Z axis is defined as the Y axis,
By aligning the light spot irradiated with the light beam with the light receiving mark, the position of the irradiation axis with respect to the set target is adjusted in the Y-axis direction or the Z-axis direction, and the Z-axis is measured using the distance measuring device. Adjust the position in the axial direction or the Y-axis direction,
A position and orientation adjuster that adjusts the orientation of the irradiation axis around the Z axis or the Y axis with respect to the set target by matching the light spot irradiated with the light beam with the light receiving mark. The light receiving landmarks are arranged at two locations separated by a predetermined distance,
The light emitter emits two light beams separated by the same distance as the two light receiving marks,
The position / orientation adjuster according to claim 1, wherein the distance measuring device measures a distance from the light emitter to the light receiving mark in the radiation source unit and the radiation detection unit. By aligning the two light receiving marks and the light spot irradiated with the light beam, the position adjustment in the X-axis direction and the Z-axis direction, and the posture adjustment around the Y-axis and the Z-axis are performed,
The position and orientation adjuster according to claim 2, wherein the position adjustment in the Y-axis direction is performed using the distance measuring device. The light receiving marks are formed at two locations separated by a predetermined distance and at two locations separated by a predetermined distance perpendicular to the irradiation axis,
The light emitter emits the light beam separated by the same distance as the light receiving mark;
The position / orientation adjuster according to claim 1, wherein the distance measuring device measures a distance from the light emitter to the light receiving mark in the radiation source unit and the radiation detection unit. By matching the light receiving mark and the light spot irradiated with the light beam, the position adjustment in the X-axis direction and the Z-axis direction, and the posture adjustment around the Y-axis,
Adjust the position in the Y-axis direction using the distance measuring device,
The position / orientation adjuster according to claim 4, wherein the attitude adjustment about the Z axis and the X axis is performed based on a difference in distance to the light receiving mark. The position and orientation adjuster according to claim 1, wherein the light emitter emits a linear light beam. The light emitted by the light emitter is parallel to the Z-axis direction,
The position / orientation adjuster according to claim 6, wherein the distance measuring device is a water manometer. Equipped with a level and leveler,
The level and the leveling device are disposed in the radiation source unit and the radiation detection unit,
The spirit level detects postures around the X axis and the Y axis in the radiation source unit and the radiation detection unit,
The position / orientation adjuster according to claim 2, 4 or 6, wherein the leveling device adjusts the attitude around the X axis and the Y axis in the radiation source unit and the radiation detection unit. This is an irradiation axis adjustment method using a position / orientation adjuster that adjusts the irradiation axes of the radiation source unit and the radiation detection unit of the radiation transmission amount measuring device that emits radiation along the irradiation axis to a set target. And
When the irradiation axis is defined as the X axis, the vertical direction is defined as the Z axis, and the axis perpendicular to both the X axis and the Z axis is defined as the Y axis,
A step of arranging a light reception mark in the radiation source unit and the radiation detection unit in parallel with the irradiation axis;
Installing the position and orientation adjuster;
The light emitter of the position and orientation adjuster emits light at right angles to the set target of the irradiation axis;
A step of measuring a distance between the radiation source unit and the radiation detection unit by the distance measuring device of the position and orientation adjuster;
By aligning the light spot irradiated with the light beam with the light receiving mark, the position of the irradiation axis with respect to the set target is adjusted in the Y-axis direction or the Z-axis direction, and the Z-axis is measured using the distance measuring device. Adjusting the position in the axial direction or the Y-axis direction;
Adjusting the attitude of the irradiation axis around the Z axis or the Y axis with respect to the set target by matching the light spot irradiated with the light beam with the light receiving mark. Placing the light receiving landmarks at two locations separated by a predetermined distance;
The light emitter emitting two light beams separated by the same distance as the two light receiving landmarks;
The irradiation range adjustment method according to claim 9, wherein the distance measuring device includes a step of measuring a distance from the light emitter to the light reception mark in the radiation source unit and the radiation detection unit. Performing the position adjustment in the X-axis direction and the Z-axis direction, and the attitude adjustment around the Y-axis and around the Z-axis by matching the two light receiving marks with the light spot irradiated with the light beam When,
Adjusting the position in the Y-axis direction using the distance measuring device;
The irradiation axis adjusting method according to claim 10, comprising: Forming the light receiving marks at two locations separated by a predetermined distance and at two locations separated by a predetermined distance perpendicular to the irradiation axis;
The light emitter emitting the light beam spaced the same distance as the light receiving landmark;
The irradiation range adjustment method according to claim 9, wherein the distance measuring device includes a step of measuring a distance from the light emitter to the light reception mark in the radiation source unit and the radiation detection unit. Performing the position adjustment in the X-axis direction and the Z-axis direction, and the posture adjustment around the Y-axis by matching the light receiving mark with the light spot irradiated with the light beam;
Adjusting the position in the Y-axis direction using the distance measuring device;
The irradiation axis adjustment method according to claim 12, further comprising: adjusting a posture around the Z axis and around the X axis based on a difference in distance to the light receiving mark. The irradiation axis adjusting method according to claim 9, wherein the light emitter emits a linear light beam. The light emitted by the light emitter is parallel to the Z-axis direction,
The irradiation axis adjusting method according to claim 14, wherein the distance measuring device is a water manometer. Equipped with a level and leveler,
The level and the leveling device are disposed in the radiation source unit and the radiation detection unit,
The spirit level detecting the posture around the X axis and the Y axis in the radiation source unit and the radiation detection unit;
The irradiation axis adjustment according to claim 10, 12, or 14, including a step of adjusting postures around the X axis and the Y axis in the radiation source unit and the radiation detection unit using the leveling device. Method.

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