JP2021056031A - Device and method for observing inside of conduit - Google Patents

Abstract

To photograph the inside of a fluid conduit in a state where fluid is circulated.SOLUTION: An observation device 100 in a conduit includes: a fuselage 20 which can be connected via a valve provided in a fluid conduit 101; a rod (extrusion mechanism) 30 for moving a camera capsule 10 containing a camera to the outside from the inside of the fuselage; and a reel 40 for feeding and rewinding a yarn connected to the camera capsule 10.SELECTED DRAWING: Figure 1

Description

The present invention relates to an observation device and an observation method in a pipeline.

Described in Patent Documents 1 and 2 as a technique for observing a damaged state by photographing the inside of a pipeline for maintenance of a fluid pipeline installed underground, such as a water and sewage pipe or an agricultural pipeline. The technology used is known. In the technique described in Patent Document 1, a camera is mounted on a moving body moving in the pipeline to photograph the inside of the pipeline. Further, in the technique described in Patent Document 2, a float is integrated with a shell having a built-in camera, and the float is run on the flow of tap water in the water pipe to photograph the inside of the water pipe.

Japanese Unexamined Patent Publication No. 2004-333285 (published on November 25, 2004) Japanese Unexamined Patent Publication No. 2019-74497 (published on May 16, 2019)

In the technique described in Patent Document 1, the length of cords connected to a moving body or a camera is limited, and it is difficult to observe a wide range. Further, in the technique described in Patent Document 1, it is necessary to stop the flow of the fluid in the pipeline and then introduce the moving body into the pipeline, so that the pipeline cannot be used during observation and normal use. It is not possible to observe the inside of the pipeline in the state of time. Further, since the technique described in Patent Document 2 is not configured to observe a small-diameter, high-pressure pipeline for delivering and distributing irrigation water to a field, for example, a camera is introduced in the pipeline. It is difficult to do, and it is not possible to observe the inside of the pipeline while keeping it at a high pressure. Moreover, it is difficult for a person to enter the inside of such a small-diameter pipeline from the end.

Small-diameter, high-pressure pipelines for delivering and distributing irrigation water to upland fields are laid in a very wide area, and the length is enormous including the branch canals. In such a pipeline, sudden damage accidents are likely to occur due to aging. In particular, small-diameter, high-pressure pipelines for delivering and distributing irrigation water to upland fields are more prone to breakage accidents.

If the pipeline is damaged, the road will collapse and soil will flow out to the surrounding farmland, increasing the burden of repair costs. Since the damaged pipeline needs to be restored immediately, the restoration work for post-maintenance is prioritized over the replacement of equipment for preventive maintenance. However, since it is expected that the number of damage accidents due to aging pipelines will continue to increase, it is urgent to switch measures from post-maintenance to preventive maintenance. Surveillance technology is required.

One aspect of the present invention has been made to solve the above-mentioned problems, and is an observation device in a pipeline capable of photographing the inside of a pipeline in a state where a fluid is circulated even in a high-pressure pipeline. And the purpose is to realize the observation method.

In order to solve the above problems, the present invention includes the following aspects.
1) A fuselage that can be connected to the fluid conduit via a valve provided in the fluid conduit, a camera capsule that can accommodate the camera inside the fuselage, and the camera capsule that can be accommodated from the inside of the fuselage to the outside. An observation device in a pipeline provided with an extrusion mechanism for moving and a reel for feeding and rewinding a thread connected to the camera capsule.
2) The observation device in the pipeline according to 1), wherein the body has a closed structure in which the inside is sealed when connected to the fluid pipeline.
3) The tube according to 1) or 2), wherein the camera capsule is suspended in the fluid line by sending a thread from the reel while the fluid is flowing in the fluid line. Observation device in the road.
4) The extrusion mechanism in the conduit according to any one of 1) to 3), which has a recess for accommodating at least a part of the camera capsule at an abutting portion that comes into contact with the camera capsule. Observation device.
5) The camera capsule has a rear portion connected to the thread, a body portion for fixing the camera inside, a front portion facing the lens of the camera, and a disk-shaped body provided around the body portion. The observation device in a pipeline according to any one of 1) to 4), which includes a blade portion.
6) The observation device in the pipeline according to any one of 1) to 5), wherein the fuselage is connected on a control valve of an air valve provided in a fluid pipeline through which a fluid is circulated. ..
7) The method for observing the inside of a pipeline using the observation device in the pipeline according to any one of 1) to 6), which is connected to the fluid pipeline via a valve provided in the fluid pipeline. A method for observing the inside of a pipeline, which comprises an imaging step of introducing the camera capsule into the fluid pipeline and photographing the inside of the fluid pipeline in a state where the fluid is circulated in the fluid pipeline. ..

According to one aspect of the present invention, for example, even in a small-diameter, high-pressure pipeline for delivering and distributing irrigation water to a field, it is possible to photograph the inside of a pipeline in a state where a fluid is circulated.

It is a schematic diagram which shows the outline of the observation apparatus in the pipeline which concerns on one Embodiment of this invention. It is a figure explaining the installation state of the observation apparatus in the pipeline which concerns on one Embodiment of this invention. It is a figure explaining a part of the observation method in a conduit using the observation device in a conduit which concerns on one Embodiment of this invention. It is a figure explaining another part of the observation method in a conduit using the observation device in a conduit which concerns on one Embodiment of this invention. It is a schematic exploded view which shows an example of the camera capsule provided in the observation device in a conduit which concerns on one Embodiment of this invention. It is an exploded view which shows an example of the camera capsule provided in the observation device in the conduit which concerns on one Embodiment of this invention.

An embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a schematic view showing an outline of an observation device in a pipeline according to an embodiment of the present invention, and FIG. 2 illustrates an installation state of an observation device in a pipeline according to an embodiment of the present invention. It is a figure to do. FIG. 3 is a diagram for explaining a part of the observation method in the pipeline using the observation device in the pipeline according to the embodiment of the present invention, and FIG. 4 is a diagram for explaining a part of the observation method in the pipeline according to the embodiment of the present invention. It is a figure explaining a part of the observation method in a pipeline using the observation device in a road.

As shown in FIGS. 1 to 4, the observation device 100 in the pipeline is used by being attached to the valve of the fluid pipeline 101. The observation device 100 includes a body 20, a paddle (extruding mechanism) 30, and a reel 40. As a valve to which the observation device 100 is attached, the control valve 103 of the air valve 102 will be described as an example in the present embodiment. A fluid flows in the fluid pipeline 101 in the direction indicated by the arrow in FIG. The observation device 100 is used to introduce the camera capsule 10 into the fluid pipeline 101 and to remove the camera capsule 10 from the fluid pipeline 101.

By photographing the inside of the fluid pipeline 101 with the camera in the camera capsule 10 introduced by the observation device 100, the inside of the fluid pipeline 101 can be observed. Many of the breakages that occur in the fluid pipeline 101 can be easily found by observing the inside thereof. If the observation device 100 is used, the inside of the fluid pipeline 101 can be observed in a continuous state in which the fluid is circulated in the fluid pipeline 101, so that the state of the fluid pipeline 101 during normal use can be observed. .. Further, if the observation device 100 is used, the inside of the fluid pipeline 101 can be observed while the inside of the fluid pipeline 101 is maintained at a high pressure.

(Fluid pipeline)
The fluid pipeline 101 for observing the inside of the pipeline by installing the observation device 100 is, for example, a small-diameter, high-pressure pipeline for delivering and distributing irrigation water to the field. The diameter of the fluid pipeline 101 in which the observation device 100 is installed is preferably 600 mm or less, more preferably 500 mm or less, still more preferably 300 mm or less. The observation device 100 can be installed via a valve even in a fluid pipeline 101 having a small diameter of 600 mm or less, and the camera capsule 10 can be reliably introduced into the pipeline.

The pressure in the fluid pipeline 101 in which the observation device 100 is installed is preferably 0.1 MPa or more and 0.6 MPa or less, more preferably 0.4 MPa or more and 0.6 MPa or less, and 0.4 MPa or more. , 0.5 MPa or less is more preferable. The pressure in the water supply pipe is usually about 0.3 MPa, and since the sewer pipe is full and does not send water, almost no pressure is applied. The observation device 100 can be installed even at a high pressure of 0.1 MPa or more and 0.6 MPa or less in the pipeline, and the camera capsule 10 can be reliably introduced into the pipeline.

As shown in the external view 1001 of FIG. 2, an air valve 102 is provided in the fluid pipeline 101 in which the observation device 100 is installed. A control valve 103 is provided between the air valve 102 and the fluid pipeline 101. The external view 1001 of FIG. 2 shows the fluid pipeline 101 before the observation device 100 is installed. The air valve 102 is provided to remove the air generated in the fluid pipeline 101 and to introduce the air into the fluid pipeline 101. The control valve 103 is a valve that controls the inflow and outflow of fluid into the air valve 102.

The air valve 102 is a straight section in the fluid pipeline 101, and is provided at a position having a higher gradient than the other sections. The fluid pipeline 101 provided in the observation device 100 is most preferably a pipeline composed of only a straight section, but may be a pipeline having a relatively gentle curve section. Even when the fluid pipeline 101 is installed at a depth of 1 m to 2 m underground, the air valve 102 is located at a depth of several tens of centimeters underground. Since the air valve 102 is provided in the manhole, it is not necessary to dig up the ground to install the observation device 100.

When the fluid pipeline 101 is installed with a very long extension such as several km to several thousand km, for example, air valves 102 are provided at intervals of 200 m to 400 m. Therefore, the observation device 100 may be provided in the control valves 103 of all the air valves 102 provided in the fluid pipeline 101, or may be provided in every few control valves 103.

When the observation device 100 is installed in the fluid pipeline 101, first, the control valve 103 is closed and then the air valve 102 is removed. As shown in the external view 1002 of FIG. 2, the observation device 100 is installed on the control valve 103 after the air valve 102 is removed. The control valve 103 is preferably a ball valve having a spherical valve body. When the control valve 103 is a valve whose valve body is not spherical, such as a butterfly valve, the observation device 100 is installed on the control valve 103 after changing to a ball valve. The diameter of the control valve 103 is preferably 75 mm or more.

(body)
The body 20 can be connected to the fluid pipeline 101 via a valve provided in the fluid pipeline 101. The fuselage 20 is installed on the control valve 103 after removing the air valve 102 via the connecting portion 21 thereof. The connecting portion 21 is screwed to, for example, the control valve 103. The control valve 103 projects in the extending direction of the fluid pipeline 101, that is, in the direction intersecting the fluid flow direction. The fuselage 20 is provided so as to protrude from the control valve 103.

The body 20 preferably has a cylindrical shape with the connecting portion 21 opened. That is, when the fuselage 20 is connected to the fluid pipeline 101, the end portion of the fluid pipeline 101 on the valve side is open. The diameter of the body 20 is appropriately set according to the diameter of the control valve 103, but is preferably 75 mm or more, more preferably 100 mm or more, and further preferably 150 mm or more. The fuselage 20 can be made of, for example, stainless steel. The length of the body 20 is, for example, 1000 mm.

Flange lids are provided on at least one of the top end portion 22 and the side surface portion 23 of the body 20. The top end 22 is provided with an air vent valve 24 for venting air in the fuselage 20. The flange lid is preferably transparent so that the inside of the body 20 can be visually recognized, and is made of, for example, an acrylic resin. Since at least one of the top end portion 22 and the side surface portion 23 can be opened and closed by the flange lid, the camera capsule 10 can be easily moved in and out of the body 20. Further, since the flange lid is made of transparent acrylic resin and the inside of the body 20 can be visually recognized, it is possible to confirm whether or not a problem such as the camera capsule 10 getting caught in the body 20 has occurred. ..

The fuselage 20 preferably has a closed structure in which the inside of the body 20 is sealed when connected to the fluid pipeline 101. The state in which the inside of the body 20 is sealed is intended to be a state in which the fluid in the fluid line 101 connecting the body 20 does not flow out and a state in which the pressure in the fluid line 101 is not changed. .. It is preferable that the connecting portion between the connecting portion 21 and the fluid pipeline 101 is sealed by, for example, packing so that the body 20 has a closed structure when connected to the fluid pipeline 101.

If the fluid in the fluid pipeline 101 flows out or the pressure changes when the fuselage 20 is connected, the normal use state of the fluid pipeline 101 cannot be observed. Since the body 20 has a closed structure in which the inside of the body 20 is sealed when connected to the fluid pipeline 101, the fluid in the fluid pipeline 101 does not flow out or the pressure does not change. The normal use state of the fluid pipeline 101 can be observed. That is, the fuselage 20 may be connected to the control valve of the air valve provided in the fluid pipeline 101 through which the fluid flows at high pressure.

(rod)
The paddle 30 is an extrusion mechanism that extrudes the camera capsule 10 from the inside of the body 20 to the outside, that is, into the fluid pipeline 101. If the camera capsule 10 has a function of pushing out the camera capsule 10 from the inside of the body 20 to the outside, it can be used as a pushing mechanism instead of the paddle 30.

The paddle 30 is located between the inside of the body 20 and the inside of the fluid pipeline 101, and extends from the abutting portion 32 and the abutting portion 32 that abuts on the camera capsule 10 that houses the camera that photographs the inside of the fluid pipeline 101. At least a part of the operation unit 31 is located outside the body 20. The paddle 30 can move the camera capsule 10 between the inside of the body 20 and the inside of the fluid pipeline 101 by operating the operation unit 31 with the camera capsule 10 in contact with the contact portion 32. It is attached to the fuselage 20 as described above.

The paddle 30 has an operation unit 31 at one end thereof. The operation unit 31 projects out of the body 20 from a hole provided in the top end 22 of the body 20. The paddle 30 has a contact portion 32 which is a push-in end portion at an end portion on the opposite side of the operation portion 31. The contact portion 32 is located between the inside of the body 20 and the inside of the fluid pipeline 101.

The operator grips the operation unit 31 and pushes or pulls out the paddle 30 into the body 20 through the hole provided in the top end 22, so that the contact portion 32 enters the body 20 and the fluid pipeline 101. Can move between and within. Therefore, by operating the operation unit 31 with the camera capsule 10 in contact with the contact portion 32, the camera capsule 10 can be moved between the inside of the body 20 and the inside of the fluid pipeline 101. It is preferable to fill the gap between the hole provided in the top end 22 and the paddle 30 with, for example, silicon to ensure the airtightness inside the body 20 without interfering with the operation of the paddle 30.

If the camera capsule 10 is simply introduced into the body 20, the camera capsule 10 may not be properly introduced into the fluid conduit 101. In particular, when the pressure inside the fluid pipeline 101 is high, it is necessary to push the camera capsule 10 toward the fluid pipeline 101. Since the observation device 100 includes the paddle 30, the camera capsule 10 introduced into the body 20 can be appropriately pushed into the fluid pipeline 101.

The paddle 30 including the operation unit 31 is made of, for example, a vinyl chloride resin, and may be integrally formed. The contact portion 32 is preferably made of Teflon (registered trademark), which is a resin having a low friction coefficient, in order to prevent disconnection of the thread 41. Since the contact portion 32 is introduced into the fluid pipeline 101 via the control valve 103, the diameter of the contact portion 32 is smaller than the diameter of the control valve 103. Further, the contact portion 32 is preferably larger than the diameter of the camera capsule 10 so as to properly contact the camera capsule 10. The contact portion 32 may be provided with a through hole (guide) capable of accommodating the thread 41 of the reel 40 described later. As a result, the feeding and rewinding of the thread from the reel 40 is preferably guided, and the contact portion 32 does not interfere with the feeding and rewinding of the thread.

The contact portion 32 preferably has a recess 33 that accommodates a part of the camera capsule 10. The recess 33 may have a shape and size that can accommodate the end of the camera capsule 10, and is, for example, a hemispherical shape. As shown in the state 1006 of FIG. 4, when the camera capsule 10 whose end is accommodated in the recess 33 is introduced into the fluid conduit 101 and then the thread 41 is loosened by the reel 40, the camera capsule connected to the thread 41 is connected. The rear part of 10 rotates around the recess 33 as a fulcrum. As a result, as shown in the state 1007 of FIG. 4, the direction of the camera capsule 10 is changed so that the longitudinal direction of the camera capsule 10 follows the flow direction of the fluid indicated by the arrow. As a result, the photographing range R by the camera in the camera capsule 10 becomes wider in the fluid pipeline 101.

Further, when collecting the camera capsule 10, when the thread 41 is wound by the reel 40 until the end portion of the camera capsule 10 is accommodated in the recess 33, the rear portion of the camera capsule 10 connected to the thread 41 is recessed 33. Rotates around. As a result, the direction of the camera capsule 10 is changed so that the longitudinal direction of the camera capsule 10 is along the extending direction of the body 20. As a result, the camera capsule 10 can be collected without being caught in the body 20.

(reel)
The reel 40 feeds and rewinds the thread 41 connected to the camera capsule 10. The reel 40 controls the position of the camera capsule 10 in the fluid pipeline 101 by controlling the loosening of the thread 41 by applying tension to or loosening the thread 41. The reel 40 is provided on the outer surface of the body 20. After pushing the camera capsule 10 into the fluid pipeline 101 with the paddle 30, the camera capsule 10 flows down according to the flow in the fluid pipeline 101. Therefore, the reel 40 is operated to feed and rewind the thread 41 to produce the thread. Controls the relaxation of 41. Thereby, the position of the camera capsule 10 in the fluid pipeline 101 can be controlled.

The observation device 100 floats the camera capsule 10 in the fluid pipeline 101 by sending the thread 41 from the reel 40 in a state where the fluid is flowing in the fluid pipeline 101. If the thread 41 is further sent out while the camera capsule 10 is suspended in the fluid pipeline 101, the camera capsule 10 rides on the flow of the fluid and flows further in the fluid pipeline 101. This makes it possible to take a wide range of images of the fluid pipeline 101.

The thread 41 is continuously sent out from the reel 40 until the camera capsule 10 passes through the observation section in the fluid line 101, and then the thread 41 is slowly rewound to apply tension to the fluid line 101 of the camera capsule 10. Stabilize your posture inside. As a result, the image captured by the camera in the camera capsule 10 is less likely to be blurred.

It is preferable that the thread 41 is pulled out from the recess 33 through the through hole provided in the contact portion 32 of the paddle 30. As a result, the feeding and rewinding of the thread 41 by the reel 40 is not hindered by the contact portion 32. Further, by controlling the relaxation of the thread 41 by the reel 40, the direction of the camera capsule 10 can be changed with the recess 33 as a fulcrum.

(Observation method)
An observation method in a pipeline using the observation device 100 according to the embodiment of the present invention will be described. The method of observing the inside of the pipeline is a pipeline using the observation device 100 in the pipeline according to the embodiment of the present invention, which is connected to the fluid pipeline 101 via a valve provided in the fluid pipeline 101. The method of observing the inside includes a photographing step of introducing a camera capsule 10 into the fluid pipeline 101 and photographing the inside of the fluid pipeline 101 in a state where the fluid is circulated in the fluid pipeline 101.

As shown in the state 1003 of FIG. 3, when the observation device 100 is connected to the fluid pipeline 101, the control valve 103 is closed, so that the fluid flowing in the fluid pipeline 101 exists above the control valve 103. do not. In the state 1003, the flange lid of the side surface portion 23 can be opened, the camera capsule 10 can be attached to the tip of the thread 41, or the camera can be housed in the camera capsule 10 attached to the thread 41.

Next, as shown in the state 1004 of FIG. 3, the flange lid of the side surface portion 23 is closed and the control valve 103 is opened. Next, by bleeding air from the air bleeding valve 24 attached to the upper part of the observation device 100, it is filled with the fluid flowing in the fluid pipeline 101 up to the top end 22 in the body 20.

Then, as shown in the state 1005 of FIG. 3, the camera capsule 10 is pushed into the fluid pipeline 101 by the paddle 30. Further, as shown in the states 1006 and 1007 of FIG. 4, by sending the thread 41 from the reel 40, the camera capsule 10 is placed on the flow of the fluid flowing in the fluid pipeline 101 and further downstream from the place where the camera capsule 10 is to be observed. Float to the side. In this way, when the reel is wound while the camera capsule 10 is suspended in the fluid conduit 101, the camera capsule 10 applies the fluid force from the upstream side of the fluid conduit 101 to the blade portion of the camera capsule 10 described later. Receive concentrically at 15. As a result, the lens of the camera housed in the camera capsule 10 can be directed in the extending direction of the fluid pipeline 101. In this state, by photographing the inside of the fluid pipeline 101 with a camera housed in the camera capsule 10, it is possible to observe the state of the fluid pipeline 101 during normal use.

If the thread 41 is colored with a different color for each predetermined length, the position of the camera capsule 10 in the fluid pipeline 101 can be specified by the length at which the thread 41 is sent out. Further, the position of the camera capsule 10 in the fluid pipeline 101 may be specified by using the seam of the fluid pipeline 101 in the image taken by the camera as a mark. Since the position of the camera capsule 10 in the fluid pipeline 101 can be specified in this way, the defective portion observed in the image captured by the camera can be easily specified.

According to the observation device in the pipeline and the observation method in the pipeline according to the embodiment of the present invention, the observation device can be installed by using the valve provided in the fluid pipeline, and the observation device and the observation device and the observation device can be installed. A high degree of airtightness between the observation device and the fluid pipeline can be ensured. Therefore, according to the observation device in the pipeline and the observation method in the pipeline according to the embodiment of the present invention, for example, even a small-diameter, high-pressure pipeline for delivering and distributing irrigation water to the field. , It is possible to photograph the inside of the pipeline with the fluid flowing.

(Camera capsule)
The configuration of the camera capsule 10 provided in the observation device 100 will be described with reference to FIGS. 5 and 6. FIG. 5 is a schematic exploded view showing an example of a camera capsule provided in the observation device according to the embodiment of the present invention. FIG. 6 is an exploded view showing an example of a camera capsule provided in the observation device in the pipeline according to the embodiment of the present invention. FIG. 6 shows a state in which the blade portion 15 is removed for convenience of explanation. In FIG. 6, state 1008 shows a state in which the entire camera capsule 10 is disassembled, state 1009 shows a state in which a part of the camera capsule 10 is assembled, and state 1010 is a state in which the camera capsule 10 is assembled. Shows the finished product.

The camera capsule 10 can be introduced through the valve of the fluid line 101, and may have a size that allows it to float in the fluid line 101. The diameter of the portion having the largest diameter of the camera capsule 10 is preferably 75 mm or less. The length of the camera capsule 10 is preferably 65 mm or less, more preferably 100 mm or less.

The camera capsule 10 has a rear portion 11, a body portion 12, a front portion 13, and a blade portion 15. In the camera capsule 10, the space between the rear portion 11 and the body portion 12 and the space between the body portion 12 and the front portion 13 are sealed by an elastic member 14. Further, the blade portion 15 is provided between the body portion 12 and the front portion 13. The rear portion 11, the body portion 12, and the front portion 13 have cavities inside thereof.

The rear portion 11 is a member connected to the thread 41. Further, the rear portion 11 is a portion serving as a starting point for rotating the camera capsule 10 in a state of being in contact with the contact portion 32 to change the direction. The rear portion 11 is provided with a hole for connecting the thread 41. The rear portion 11 is preferably conical with no corners. When the rear part has a conical shape, the thread 41 is connected to the apex side of the conical shape. The rear portion 11 may be composed of, for example, a cap 11a and a cap nut 11b. Since the rear portion 11 may come into contact with the inner wall of the fluid pipeline 101, it is preferable that the rear portion 11 is made of a material having a predetermined elasticity. The rear portion 11 can be made of polypropylene, for example.

The body portion 12 is a member for fixing the camera 16 inside the body portion 12. The body portion 12 includes a fixing portion 19 for fixing the camera 16 inside the body portion 12. The body portion 12 is also preferably made of a material having a predetermined elasticity because it may come into contact with the inner wall of the fluid pipeline 101 as in the rear portion 11. The body part 12 can be made of polypropylene, for example.

The fixing portion 19 is preferably capable of accommodating the light 18. The light 18 is, for example, an LED light. It is preferable that a light-shielding lens cover 17 is provided at the end of the camera 16 on the lens side so that the light from the light 18 does not directly enter the lens.

The front portion 13 is a member facing the lens of the camera 16. Therefore, the front portion 13 is preferably made of a highly translucent material. The front portion 13 may be made of, for example, an acrylic resin.

The rear portion 11, the body portion 12, and the front portion 13 are preferably independent members from the viewpoint of ease of manufacture. The rear portion 11, the body portion 12, and the front portion 13 can be manufactured using, for example, a three-dimensional printing apparatus. Since the camera capsule 10 is introduced into the fluid pipeline 101 in a state where the fluid is circulated, it is preferable that the camera capsule 10 has a highly watertight structure. An elastic member 14 seals between the rear portion 11 and the body portion 12 and between the body portion 12 and the front portion 13, and the connection thereof is, for example, a screw type. Since the camera capsule 10 is introduced into the fluid pipeline 101 through which the fluid flows at high pressure, it is preferable that the camera capsule 10 has a pressure-resistant structure. By making the rear portion 11 and the body portion 12 made of polypropylene, for example, the pressure resistance of the camera capsule 10 can be increased.

The blade portion 15 is a disk-shaped or scarf-shaped member provided around the body portion 12. The blade portion 15 is for stabilizing the posture of the camera capsule 10 floating in the fluid pipeline 101. The blade portion 15 is made of an elastic member such as rubber. It is also preferable that the blade portion 15 is provided with a plurality of small-diameter holes through which the fluid passes in the disk-shaped or scarf-shaped portion thereof.

(camera)
The camera 16 housed in the camera capsule 10 is preferably a small and wireless digital camera, and more preferably a so-called action camera having a waterproof function equivalent to that of a daily life waterproof function. Further, the camera 16 may be capable of wireless communication, whereby it is possible to start or stop recording of the camera with the camera 16 built in the camera capsule 10.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

The present invention can be used in the agricultural field.

10 Camera capsule 20 Body 30 Paddle (extrusion mechanism)
33 Depression 40 Reel 41 Thread 100 Observation device (observation device in the pipeline)
101 Fluid pipeline 102 Air valve 103 Control valve (valve)

Claims (7)

A fuselage that can be connected to the fluid pipeline via a valve provided in the fluid pipeline,
A camera capsule that houses the camera and that can be housed inside the body.
An extrusion mechanism for moving the camera capsule from the body to the outside,
An observation device in a pipeline including a reel for feeding and rewinding a thread connected to the camera capsule. The observation device in a pipeline according to claim 1, wherein the body has a closed structure in which the inside is sealed when connected to the fluid pipeline. The inside of the conduit according to claim 1 or 2, wherein the camera capsule is suspended in the fluid conduit by sending a thread from the reel in a state where the fluid is flowing in the fluid conduit. Observation device. The pipeline according to any one of claims 1 to 3, wherein the extrusion mechanism has a recess for accommodating at least a part of the camera capsule at an abutting portion that abuts on the camera capsule. Observation device. The camera capsule has a rear portion connected to the thread, a body portion for fixing the camera inside, a front portion facing the lens of the camera, and a disk-shaped blade portion provided around the body portion. The observation device in a pipeline according to any one of claims 1 to 4, further comprising. The observation device in a pipeline according to any one of claims 1 to 5, wherein the fuselage is connected on a control valve of an air valve provided in a fluid pipeline through which a fluid is circulated. .. The method for observing the inside of a pipeline using the observation device in the pipeline according to any one of claims 1 to 6, which is connected to the fluid pipeline via a valve provided in the fluid pipeline. There,
An observation method in a pipeline, which comprises an imaging step of introducing the camera capsule into the fluid pipeline and photographing the inside of the fluid pipeline in a state where the fluid is circulated in the fluid pipeline.

Images