JP2008196944A - Apparatus and method for inspecting tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank inspection apparatus and a tank inspection method for easily and surely detecting the assembled state of a sealing member, which is arranged between an inner wall that demarcates the opening part of tank body and the mouthpieces for tanks, mounted on the opening part for sealing between the inner wall and the mouthpieces for tanks. <P>SOLUTION: The tank inspection apparatus inspects a tank 100, to which both the mouthpiece body 21 mounted to the opening part 11 of the tank body 10 and the mouthpiece 20, arranged in the outer circumferential surface 13 of the mouthpiece body 21 for tanks, having an O-ring 30 for sealing between the mouthpiece body 21 and the inner circumferential surface 12, demarcating the opening part 11 are assembled. The tank inspection apparatus is provided with both an energizing means for energizing a circuit, including the tank body 10, the mouthpiece body 21, and the O-ring 30 and a detection means for detecting the state of energization; the O-ring 30 has a conductor part 31 and a nonconductor part 32; and the circuit is energized, when the conductor part 31, the tank body 10 and the mouthpiece body 21 become conducting. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a sealing member that is disposed between an inner wall that defines an opening of a tank and a tank base that is attached so as to close the opening, and that seals between the inner wall and the tank base. The present invention relates to a tank inspection device and a tank inspection method for detecting the assembly state of the tank.

Conventionally, a base is attached to the opening of the tank, and an O-ring is provided between the inner wall defining the opening of the tank and the base. As such a tank, for example, a tank main body having an opening, a base attached so as to close the opening, and provided between the tank main body and the base, the tank main body and the base A first sealing member that seals between the tank main body and the base, and is disposed at a position different from the first sealing member to seal between the tank main body and the base. One end is opened in a gap formed between the tank main body and the base between the first seal member and the second seal member. A high-pressure tank having a communication path whose end opens to the outside air side is introduced. In this high-pressure tank, the inner and outer O-rings are sealed between the base and the high-pressure tank, so that hydrogen gas in the tank leaks out to the atmosphere through the gap between the base and the high-pressure tank. Is suppressed. (For example, refer to Patent Document 1).
JP 2005-291434 A

  The base is usually assembled by being inserted into the opening of the tank body with an O-ring disposed in a seal groove formed on the outer peripheral surface of the base. Here, a crushing margin is necessary for the O-ring to securely seal the gap between the base and the inner wall surface defining the opening by the O-ring. Therefore, at the time of the assembly, the base is usually press-fitted into the opening while bringing the outer peripheral surface of the O-ring into contact with the inner wall surface defining the opening. For this reason, depending on the contact condition (pressing force) between the outer peripheral surface of the O-ring and the inner wall surface that defines the opening, the O-ring disposed on the base may be twisted due to friction generated between the two. Since it is difficult to visually check the state of the O-ring after assembling the base in the opening, even if the base is assembled with the O-ring twisted, it is difficult to detect this. It is.

  The present invention has been made in view of such circumstances, and is disposed between an inner wall that defines an opening of a tank body and a tank base that is attached to close the opening, and the inner wall It is an object of the present invention to provide a tank inspection device and a tank inspection method capable of easily and reliably detecting an assembly state of a seal member that seals between a tank base.

  To achieve this object, the present invention provides a base body attached to an opening formed in a tank body, an inner peripheral surface disposed on the outer peripheral surface of the base body, and defining the base body and the opening. A tank inspection device for inspecting a tank formed by assembling a tank base having a sealing member for sealing between the tank main body, the tank main body, the base main body, and the seal member An energization means for energizing the circuit to be energized, and a detection means for detecting the energization state. The seal member has a conductor portion formed of a conductor and a nonconductor portion formed of a nonconductor. The circuit provides a tank inspection device that is energized when the conductor portion of the seal member is electrically connected to the tank body and the base body.

  In the tank inspection apparatus having this configuration, the circuit is energized when the conductor portion of the seal member is electrically connected to the tank body and the base body. That is, the position of the conductor part and the non-conductor part of the seal member when the seal member is disposed in an appropriate state (normal state), and the state in which the seal member is inappropriate (a state where an abnormality has occurred) Whether the circuit is energized or not is determined by the difference in the positions of the conductor portion and the non-conductor portion of the seal member when it is disposed. Therefore, the sealing member can have an electrical contact (ON / OFF switch) function. Specifically, when the tank base is assembled to the opening of the tank body, and the seal member is in an inappropriate state, the conductor portion of the seal member, the tank body, If the positions of the conductor part and the non-conductor part are set so as to be electrically connected to the base body, the energization state of the circuit is detected after the assembly, and when the circuit is not energized, the seal member When it is determined that the seal member is assembled in an appropriate state and the circuit is energized, it can be determined that the seal member is assembled in an inappropriate state. Therefore, the assembled state of the seal member can be detected easily and reliably.

  On the other hand, when the tank base is assembled to the opening of the tank body, and the seal member is in an appropriate state, the conductor portion of the seal member, the tank body, and the base body If the positions of the conductor part and the non-conductor part are set so as to conduct, the energization state of the circuit is detected after the assembly, and when the circuit is energized, the seal member is appropriately When it is determined that the seal member is assembled in a state and the circuit is not energized, it can be determined that the seal member is assembled in an inappropriate state. Therefore, the assembled state of the seal member can be detected easily and reliably.

  As one aspect of the tank inspection apparatus according to the present invention, the base body has a conductor region that contacts the seal member, and one terminal of the detection means is connected to the conductor region, and the tank body The inner peripheral surface that defines the opening of the tank has a conductor region that comes into contact with the seal member when the tank base is assembled to the opening, and the other terminal of the detection means is in the conductor region. The circuit can be configured to be energized when the conductor portion of the seal member comes into contact with the conductor region on the inner peripheral surface that defines the base body and the opening.

  In the tank inspection apparatus according to the present invention, the seal member is formed of an O-ring, and the conductor portion is a region that is substantially half on the inner peripheral side in a cross section in a direction substantially perpendicular to the axial direction of the O-ring. Alternatively, the non-conductor portion may be formed of one of the outer half and the other half of the outer peripheral side. In the tank inspection apparatus having this configuration, for example, when the O-ring is assembled in an inappropriate state such as twisting or shifting, the inner side of the O-ring is in the inappropriate portion. The substantially half area and the substantially half area on the outer peripheral side are displaced from the positions when assembled in an appropriate state. Therefore, when the O-ring is in an appropriate state, the O-ring is twisted and improper if it is set so that the conductor portion of the O-ring is insulated from the tank body and the base body. In this state, the conductor portion of the O-ring is electrically connected to the tank main body and the base body in this portion. On the other hand, when the O-ring is in an appropriate state, the O-ring is in an inappropriate state if it is set so that the conductor portion of the O-ring is electrically connected to the tank body and the base body. In this case, in this portion, the conductor part of the O-ring and the tank body and the base body are not electrically connected. Therefore, in the same manner as described above, the assembly state of the O-ring can be easily and reliably detected by detecting the energization state of the circuit.

  Furthermore, in the tank inspection apparatus according to the present invention, the energization means energizes the conductor portion of the seal member, and the base body has a conductor area that contacts the seal member, and the detection is performed in the conductor area. One terminal of the means is connected, and when the tank base is assembled to the opening, the tank main body is in contact with the seal member and a conductor region not in contact with the seal member. And the other terminal of the detection means is connected to the conductor region, and the circuit may be configured to be energized when the conductor portion contacts the conductor region of the base body. . When the tank cap is assembled to the opening of the tank body, the tank inspection device having this configuration, when the seal member is in an appropriate state, the conductor portion of the seal member, If it is set so as to contact the conductor region of the base body, after the assembly, the energization state of the circuit is detected, and when the circuit is energized, the seal member is assembled in an appropriate state. If the circuit is not energized, it can be determined that the seal member is assembled in an inappropriate state. Therefore, the assembled state of the seal member can be detected easily and reliably.

  Further, in the case of this configuration, when the tank base is assembled to the opening of the tank body, and the seal member is in an inappropriate state, the conductor portion of the seal member and the base body If it is set to contact with the conductor region of the circuit, after the assembly, when the energized state of the circuit is detected and the circuit is not energized, the seal member is assembled in an appropriate state. If the circuit is energized, it can be determined that the seal member is assembled in an inappropriate state. Therefore, the assembled state of the seal member can be detected easily and reliably.

  In this configuration, the tank body includes a liner disposed on the inner side thereof, and a conductor region of the tank body is disposed on an outer peripheral surface that defines an opening of the liner. You may comprise from an insert ring. In addition to the advantages described above, the tank inspection apparatus having this configuration can be provided with an outer wall for reinforcement outside the liner, and the strength of the tank body can be further improved. Therefore, it can be sufficiently applied to a very high pressure tank.

  Furthermore, as another aspect of the tank inspection apparatus according to the present invention, the energization means energizes the conductor portion of the seal member, the base body includes a non-conductor region that contacts the seal member, and the seal A conductor region not in contact with a member, and one terminal of the detecting means is connected to the conductor region, and the tank body is configured to be sealed when the tank base is assembled to the opening. A conductor region in contact with a member, the other terminal of the detection means is connected to the conductor region, and the circuit is energized when the conductor portion contacts the conductor region of the tank body. Can also be provided. When the tank cap is assembled to the opening of the tank body, the tank inspection device having this configuration, when the seal member is in an appropriate state, the conductor portion of the seal member, If it is set so that the conductor area of the tank body is in contact, after the assembly, the energization state of the circuit is detected, and when the circuit is energized, the seal member is assembled in an appropriate state. If the circuit is not energized, it can be determined that the seal member is assembled in an inappropriate state. Therefore, the assembled state of the seal member can be detected easily and reliably.

  In the case of this configuration, when the tank base is assembled to the opening of the tank body, and the seal member is in an inappropriate state, the conductor portion of the seal member and the tank body If it is set to contact with the conductor region of the circuit, after the assembly, when the energized state of the circuit is detected and the circuit is not energized, the seal member is assembled in an appropriate state. If the circuit is energized, it can be determined that the seal member is assembled in an inappropriate state. Therefore, the assembled state of the seal member can be detected easily and reliably.

  In addition, the present invention provides a base body attached to an opening formed in a tank body and an outer peripheral surface of the base body, and seals between the base body and an inner peripheral surface defining the opening. A tank inspection method for inspecting a tank in which a tank base having a sealing member is assembled, and a circuit configuration that constitutes a circuit including the tank body, the base body, and the sealing member A process, an energization process for energizing the circuit, a detection process for detecting the energization state, and a determination process for determining an assembly state of the seal member based on the energization state detected in the detection process; A tank inspection method is provided.

  The tank inspection method comprising these steps detects the assembly state of the seal member easily and reliably by detecting the energization state of the circuit after the tank base is assembled to the tank body. can do.

  In the tank inspection method according to the present invention, a step of measuring an amount of current flowing through the circuit can be performed in the detection step. In this case, when the tank base is assembled to the opening of the tank main body, the circuit main body includes the tank main body, the base main body, and the base body when the seal member is in an appropriate state. The circuit includes a step of configuring the circuit so that the seal member is electrically connected and energized, and the determination step includes an appropriate assembly state of the seal member when the amount of current exceeds a predetermined threshold value. It can have the process of judging. Alternatively, in the circuit configuration step, when the tank base is assembled to the opening of the tank main body, and the seal member is in an inappropriate state, the tank main body, the base main body, The circuit includes a step of configuring the circuit so that the seal member is electrically connected and energized, and the determination step includes an appropriate assembly state of the seal member when the amount of current is a predetermined threshold value or less. It can also have the process of judging. The threshold value may be 0.

  In addition, the energization step may include a step of energizing the circuit from the outside, and may include an energization unit as a component of the circuit.

  In the tank inspection device according to the present invention, when the conductor portion of the seal member and the tank main body and the base body are electrically connected, a circuit including the tank main body, the base body, and the seal member is energized. Therefore, the sealing member can have an electrical contact function. Therefore, the assembly state of the seal member can be easily and reliably detected by detecting the energized state of the circuit after the tank base is assembled to the opening of the tank body. As a result, it is possible to select a highly reliable tank with excellent sealing performance.

  Further, the tank inspection method according to the present invention energizes a circuit including a tank body, a base body, and a seal member, detects the energized state, and based on the detected energized state, the seal member Therefore, it is possible to easily and reliably detect the assembled state of the seal member after the tank base is assembled to the opening of the tank body. As a result, it is possible to select a highly reliable tank with excellent sealing performance.

  Next, a tank inspection apparatus and inspection method according to a preferred embodiment of the present invention will be described with reference to the drawings. In addition, embodiment described below is the illustration for demonstrating this invention, and this invention is not limited only to these embodiment. Therefore, the present invention can be implemented in various forms without departing from the gist thereof.

(Embodiment 1)
FIG. 1 is a sectional view showing a state in which a tank base is assembled to a tank body according to a first embodiment of the present invention, and FIG. 2 is a schematic diagram of a tank inspection device according to the first embodiment of the present invention. FIG. 3 is a schematic diagram of the tank inspection apparatus according to the first embodiment of the present invention, in which the seal member is properly assembled, and the seal member is not properly assembled. FIG. 4 is a plan view of a seal member disposed on the base body according to the first embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line VV shown in FIG. . In addition, in each said figure, in order to make an explanation easy to understand, the thickness, size, enlargement / reduction ratio, etc. of each member are described without matching with actual ones.

  As shown in FIG. 1, a tank 100 to be inspected by the tank inspection apparatus 1 according to the first embodiment includes a tank body 10 made of a conductor such as metal and an opening 11 formed in the tank body 10. And a tank base 20 to be assembled.

  The tank base 20 includes a base body 21 made of a conductor such as metal, an O-ring 30 as a sealing member disposed on the outer peripheral surface of the base body 21, and two backup rings 35 and 36 made of a nonconductor. It is configured with.

  As shown in FIGS. 4 and 5 in particular, the O-ring 30 has a conductor portion 31 in a substantially half region on the inner peripheral side and a substantially half region on the outer peripheral side in a cross section in a direction substantially perpendicular to the axial direction. The non-conductor portion 32 is configured. The conductor portion 31 is formed of a material that conducts electricity and has a sealing property, such as a soft metal, and the non-conductor portion 32 is formed of a conventional O-ring forming material (for example, rubber). As shown in FIG. 1, the O-ring 30 is disposed on the base body 21 with the conductor portion 31 in contact with the outer peripheral surface 13 of the base body 21. Therefore, when the tank base 20 is press-fitted into the opening 11 of the tank body 10, there is no problem such as the O-ring 30 being twisted or displaced, and the tank base 20 is properly assembled (the base body 21 When the outer peripheral surface 13 and the inner peripheral surface 12 defining the opening 11 are sealed), the outer peripheral surface 13 of the base body 21 and the conductor portion 31 of the O-ring 30 are in contact with each other, and the O-ring The 30 non-conductive portions 32 and the inner peripheral surface 12 of the tank body 10 come into contact with each other. At this time, an O-ring 30 is interposed between the base body 21 and the tank body 10, and they are not in direct contact with each other.

  The tank inspection apparatus 1 according to the present invention is for inspecting the assembled state of the O-ring 30 after the tank base 20 is assembled to the tank body 10. The tank body 10, the base body 21, A circuit including the ring 30, a power source 51 for energizing the circuit, and an ammeter 52 for measuring the amount of current flowing through the circuit are configured. The power supply 51 has one terminal connected to the base body 21 and the other terminal connected to the tank body 10. The ammeter 52 has one terminal connected to the base body 21 and the other terminal connected to the tank body 10.

  The inspection of the assembled state of the O-ring 30 is performed by turning on the power supply 51 of the tank inspection device 1, passing a current through the circuit, and observing the fluctuation of the ammeter 52. Specifically, when the O-ring 30 is assembled in an appropriate state (normal state), the outer peripheral surface 13 of the base body 21 and the conductor portion 31 of the O-ring 30 are connected as shown in FIG. Since the non-conductive portion 32 of the O-ring 30 and the inner peripheral surface 12 of the tank body 10 are in contact with each other, the base body 21 and the tank body 10 are insulated by the O-ring 30 (switch OFF state). The current is prevented from flowing through the circuit (not energized), and the ammeter 52 does not shake. Therefore, when the ammeter 52 cannot swing, it can be determined that the O-ring 30 is assembled in an appropriate state.

  On the other hand, when the O-ring 30 is assembled in an inappropriate state (an abnormal state) such as being twisted or displaced, as shown in FIG. The positions of the conductor portion 31 and the non-conductor portion 32 of the ring 30 deviate from the positions (see FIG. 2) when assembled in an appropriate state, and the conductor portion of the outer peripheral surface 13 of the base body 21 and the O-ring 30. 31 is in contact with the inner peripheral surface 12 of the tank body 10 and the conductor portion 31 of the O-ring 30. Therefore, the base body 21 and the tank body 10 are electrically connected via the conductor portion 31 of the O-ring 30 (switch ON state), current flows (energized) in the circuit, and the ammeter 52 swings. Become. Accordingly, when the ammeter 52 is shaken, it can be determined that the O-ring 30 is assembled in an inappropriate state.

  As described above, the tank inspection apparatus 1 according to the first embodiment is electrically connected to the O-ring 30 even when the O-ring 30 is not visible after the tank base 20 is assembled to the tank body 10. By providing the contact (ON / OFF switch) function, the assembled state of the O-ring 30 can be detected easily and accurately.

  In addition, in Embodiment 1, although the case where the base body 21 was comprised from the conductor was demonstrated, not only this but the base body 21 should just be a conductor at least the part which contacts the O-ring 30, and this conductor area | region. It is sufficient that one terminal of the ammeter 52 is connected to the terminal.

  In the first embodiment, the case where the tank body 10 is made of a conductor has been described. However, the present invention is not limited to this, and the tank body 10 contacts at least the O-ring 30 when the tank base 20 is assembled. It is only necessary that the portion to be conductive is a conductor, and the other terminal of the ammeter 52 only needs to be connected to this conductor region.

  In the first embodiment, the case where the O-ring 30 is used as the seal member has been described. However, the present invention is not limited thereto, and the switch ON state and the switch OFF state (electrical contacts (ON / OFF) described above are used. Needless to say, a seal member having another configuration may be used as long as the function of the switch)) can be provided.

  Furthermore, in the first embodiment, in the cross section in the direction substantially perpendicular to the axial direction of the O-ring 30, a substantially half region on the inner peripheral side is the conductor portion 31, and a substantially half region on the outer peripheral side is the non-conductor portion 32. However, the present invention is not limited to this. For example, in the cross section in a direction substantially perpendicular to the axial direction of the O-ring 30, a substantially half region on the inner peripheral side is defined as the non-conductor portion 32, and approximately half on the outer peripheral side. The region may be the conductor portion 31. Also in this configuration, the assembled state of the O-ring 30 can be determined in the same manner as described above.

  In the first embodiment, when the O-ring 30 is assembled in an appropriate state, the base body 21 and the tank body 10 are insulated from each other by the O-ring 30 (switch OFF state). The conductor portion 31 of the O-ring 30 is connected to the base body 21 and the tank body 10 through the conductor portion 31 of the O-ring 30 (switch ON state) when properly assembled. Although the case where the position of the nonconductor part 32 was determined was demonstrated, not only this but the position of the conductor part 31 and the nonconductor part 32 is between the base body 21 and the tank main body 10, and the conductor part of the O-ring 30 When conducting through 31 (switch ON state) and improperly assembled, the base body 21 and the tank body 10 are insulated by the O-ring 30 (switch OFF state). Set Good thing is a matter of course.

  In the first embodiment, the case where the assembled state of the O-ring 30 is determined based on whether or not a current flows in the circuit (the current amount threshold value is 0) has been described. According to these conditions, a threshold value of the amount of current flowing through the circuit may be set, and the assembled state of the O-ring 30 may be determined based on whether or not this threshold value is exceeded.

(Embodiment 2)
Next, a tank inspection apparatus according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a schematic diagram of a tank inspection apparatus according to the second embodiment of the present invention, and shows a case where the assembled state of the seal member is appropriate, and FIG. 7 shows the second embodiment of the present invention. FIG. 8 is a schematic diagram of such a tank inspection device, showing a case where the assembly state of the seal member is inappropriate, and FIG. 8 is a diagram of the seal member disposed on the base body according to the second embodiment of the present invention. It is sectional drawing corresponding to FIG. In addition, in each said figure, in order to make an explanation easy to understand, the thickness, size, enlargement / reduction ratio, etc. of each member are described without matching with actual ones. Moreover, in Embodiment 2, the same code | symbol is attached | subjected to the member similar to Embodiment 1, and the detailed description is abbreviate | omitted.

  As shown in FIGS. 6 to 8, the main points of the tank inspection apparatus 2 according to the second embodiment different from the tank inspection apparatus 1 according to the first embodiment are the configurations of the tank main body 110 and the O-ring 130. . That is, the tank body 110 according to the second embodiment includes a non-conductive liner 111 made of resin on the inside, and a metal insert ring 112 on the outer peripheral surface of the liner 111 that defines the opening 11 of the tank body 110. Is provided. Although not shown, the tank body 110 can be provided with a reinforcing outer wall on the outside of the liner 111 to improve the strength of the tank body 110 as a whole.

  As shown in FIG. 8 in particular, the O-ring 130 includes a conductor portion 131 in a partial area on the inner peripheral side in a cross section in a direction substantially perpendicular to the axial direction, and a non-conductor portion in a region other than the conductor portion 131. 132. The conductor 131 is made of a material that conducts electricity and has a sealing property, such as a soft metal, and the non-conductor 132 is made of a conventional O-ring forming material (for example, rubber). The O-ring 130 is disposed on the base body 21 with the conductor 131 in contact with the outer peripheral surface 13 of the base body 21. Therefore, when the tank base 20 is press-fitted into the opening 11 of the tank body 10, there is no problem such as the O-ring 130 being twisted or displaced, and the tank base 20 is properly assembled. The outer peripheral surface 13 of the base body 21 and the conductor part 131 of the O-ring 130 come into contact with each other, and the non-conductor part 132 of the O-ring 130 and the liner 111 of the tank body 110 come into contact with each other. At this time, an O-ring 130 is interposed between the base body 21 and the tank body 110, and they are not in direct contact with each other. In addition, a covered electric wire 133 (see FIG. 8) is connected to the conductor 131 of the O-ring 130 so that a current is directly supplied from an external current supply source (energization means).

  The tank inspection apparatus 2 according to the present invention is for inspecting the assembled state of the O-ring 130 after the tank base 20 is assembled to the tank body 110, and the insert ring 112 that is a component of the tank body 110. And a circuit including the base body 21 and the O-ring 130, and an ammeter 52 for measuring the amount of current flowing through the circuit. The covered electric wire 133 connected to the O-ring 130 is connected to an external power source. (Not shown) is connected. The ammeter 52 has one terminal connected to the base body 21 and the other terminal connected to the insert ring 112.

  Inspecting the assembled state of the O-ring 130, a current is passed from the external power source (not shown) of the tank inspection device 2 to the conductor 131 of the O-ring 130 through the covered electric wire 133, and the vibration of the ammeter 52 is observed. Is done. Specifically, when the O-ring 130 is assembled in an appropriate state (normal state), the outer peripheral surface 13 of the base body 21 and the conductor portion 131 of the O-ring 130 are connected as shown in FIG. Since they are in contact with each other, the base body 21 and the insert ring 112 which is a component of the tank body 110 are in a conductive state (switch ON state). Therefore, when a current is passed from the external power source (not shown) to the conductor 131 of the O-ring 130 via the covered electric wire 133, a current flows (energized) in the circuit, and the ammeter 52 swings. From this, when the ammeter 52 swings, it can be determined that the O-ring 130 is assembled in an appropriate state.

  On the other hand, when the O-ring 130 is assembled in an inappropriate state (a state in which an abnormality has occurred) such as twisting or shifting, as shown in FIG. The positions of the conductor part 131 and the non-conductor part 132 of the ring 130 deviate from the positions (see FIG. 6) when assembled in an appropriate state, and the conductor part of the outer peripheral surface 13 of the base body 21 and the O-ring 130. 131 no longer contacts. Therefore, even if a current is passed from the external power source (not shown) to the conductor 131 of the O-ring 130 via the covered wire 133, this current is not supplied to the base body 21 (insulation state: switch OFF state) Current is prevented from flowing through the circuit (not energized), and the ammeter 52 does not swing. Therefore, when the ammeter 52 cannot swing, it can be determined that the O-ring 30 is assembled in an inappropriate state.

  As described above, the tank inspection apparatus 2 according to the second embodiment electrically connects the O-ring 130 even when the O-ring 130 is not visible after the tank base 20 is assembled to the tank body 110. By providing a contact (ON / OFF switch) function, the assembled state of the O-ring 130 can be detected easily and accurately.

  In the second embodiment, the case where the inner side of the tank body 110 is constituted by the non-conductive liner 111 and the conductor insert ring 112 is disposed on the outer peripheral surface of the liner 111 has been described. The main body 110 only needs to be a non-conductor at least in contact with the O-ring 130, and has a conductor region that does not contact the O-ring 130, and the other terminal of the ammeter 52 can be connected to this conductor region. If so, a member other than the insert ring 112 or a conductor film may be used.

  In the second embodiment, the case where the base body 21 is formed of a conductor has been described. However, the present invention is not limited to this, and the base body 21 is not connected to the O-ring 130 and the conductor area does not contact the O-ring 130. The tank body 110 may be formed from a conductor. In this case, the conductor part 131 of the O-ring 130 may be arranged on the outer peripheral side so that the conductor part 131 contacts the tank body 110 when the O-ring 30 is assembled in an appropriate state. it can.

It is sectional drawing which shows the state which assembles a tank base to the tank main body concerning Embodiment 1 of the present invention. It is a schematic diagram of the tank inspection apparatus concerning Embodiment 1 of this invention, Comprising: It is a figure which shows the case where the assembly | attachment state of a sealing member is appropriate. It is a schematic diagram of the tank inspection apparatus concerning Embodiment 1 of this invention, Comprising: It is a figure which shows the case where the assembly | attachment state of a sealing member is inappropriate. It is a top view of the sealing member arrange | positioned at the nozzle | cap | die main body concerning Embodiment 1 of this invention. It is sectional drawing along the VV line shown in FIG. It is a schematic diagram of the tank inspection apparatus concerning Embodiment 2 of this invention, Comprising: It is a figure which shows the case where the assembly | attachment state of a sealing member is appropriate. It is a schematic diagram of the tank test | inspection apparatus concerning Embodiment 2 of this invention, Comprising: It is a figure which shows the case where the assembly | attachment state of a sealing member is inappropriate. It is sectional drawing corresponding to FIG. 5 of the sealing member arrange | positioned at the nozzle | cap | die main body concerning Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 ... Tank inspection apparatus 10, 110 ... Tank main body, 11 ... Opening part, 20 ... Base for tank, 21 ... Main body of base, 30, 130 ... O-ring, 31, 131 ... Conductor part, 32, 132 ... Non Conductor part 51 ... Power source 52 ... Ammeter 100 ... Tank 111 ... Liner 112 ... Insert ring 133 ... Coated wire

Claims (11)

A base body attached to an opening formed in the tank body, and a seal member disposed on an outer peripheral surface of the base body and sealing between the base body and an inner peripheral surface defining the opening. A tank inspection device for inspecting a tank in which a tank base is assembled,
Energization means for energizing a circuit including the tank body, the base body, and the seal member;
Detecting means for detecting the state of energization,
The seal member has a conductor portion formed from a conductor and a non-conductor portion formed from a non-conductor,
The circuit is a tank inspection device that is energized when the conductor portion of the seal member is electrically connected to the tank body and the base body. The base body has a conductor region in contact with the seal member, and one terminal of the detection means is connected to the conductor region,
The inner peripheral surface defining the opening of the tank body has a conductor region that contacts the seal member when the tank base is assembled to the opening, and the other of the detection means is in the conductor region. Are connected,
The tank inspection device according to claim 2, wherein the circuit is energized when a conductor portion of a seal member comes into contact with a conductor region on an inner peripheral surface that defines the base body and the opening.   The seal member includes an O-ring, and the conductor portion includes one of a substantially half region on the inner peripheral side and a substantially half region on the outer peripheral side in a cross section in a direction substantially perpendicular to the axial direction of the O-ring. The tank inspection device according to claim 1, wherein the non-conductor portion is formed of the other of the substantially half region on the inner peripheral side or the substantially half region on the outer peripheral side. The energizing means energizes the conductor portion of the seal member,
The base body has a conductor region in contact with the seal member, and one terminal of the detection means is connected to the conductor region,
The tank body has a non-conductive region that contacts the seal member and a conductive region that does not contact the seal member when the tank base is assembled to the opening, and the detection is performed in the conductive region. The other terminal of the means is connected,
The tank inspection device according to claim 1, wherein the circuit is energized when the conductor portion contacts a conductor region of the base body.   5. The tank body includes a liner disposed on an inner side thereof, and a conductor region of the tank body includes an insert ring disposed on an outer peripheral surface defining an opening of the liner. Tank inspection equipment. The energizing means energizes the conductor portion of the seal member,
The base body has a non-conductor region that contacts the seal member and a conductor region that does not contact the seal member, and one terminal of the detection means is connected to the conductor region,
The tank body has a conductor region that comes into contact with the seal member when the tank base is assembled in the opening, and the other terminal of the detection means is connected to the conductor region,
The tank inspection apparatus according to claim 1, wherein the circuit is energized when the conductor portion contacts a conductor region of the tank body. A base body attached to an opening formed in the tank body, and a seal member disposed on an outer peripheral surface of the base body and sealing between the base body and an inner peripheral surface defining the opening. A tank inspection method for inspecting a tank in which a tank base is assembled,
A circuit configuration step for configuring a circuit including the tank body, the base body, and the seal member;
An energization step of energizing the circuit;
A detection step of detecting the state of energization;
A determination step of determining an assembly state of the seal member based on the energization state detected in the detection step;
A tank inspection method comprising:   8. The tank inspection method according to claim 7, wherein the detecting step includes a step of measuring an amount of current flowing through the circuit. When the tank base is assembled to the opening of the tank body, the tank body, the base body, and the seal member when the seal member is in an appropriate state when the tank base is assembled to the opening of the tank body. And the step of configuring the circuit so that is electrically connected and energized,
The tank inspection method according to claim 8, wherein the determining step includes a step of determining that the assembled state of the seal member is appropriate when the amount of current exceeds a predetermined threshold value. In the circuit configuration step, the tank body, the base body, and the seal are formed when the seal member is in an inappropriate state when the tank base is assembled in the opening of the tank body. Having a step of configuring the circuit so that the member is conductive and energized,
The tank inspection method according to claim 8, wherein the determination step includes a step of determining that the assembled state of the seal member is appropriate when the amount of current is equal to or less than a predetermined threshold value.   The tank inspection method according to any one of claims 7 to 10, wherein the energization step includes a step of energizing the circuit from outside.

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