WO2022070266A1 - 圧力容器 - Google Patents

圧力容器 Download PDF

Info

Publication number
WO2022070266A1
WO2022070266A1 PCT/JP2020/036952 JP2020036952W WO2022070266A1 WO 2022070266 A1 WO2022070266 A1 WO 2022070266A1 JP 2020036952 W JP2020036952 W JP 2020036952W WO 2022070266 A1 WO2022070266 A1 WO 2022070266A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure vessel
outer peripheral
container body
contact portion
peripheral portion
Prior art date
Application number
PCT/JP2020/036952
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
雄誠 小野
赳弘 古谷野
尚弘 市川
勝也 谷口
Original Assignee
三菱電機株式会社
三菱電機ビルテクノサービス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社, 三菱電機ビルテクノサービス株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2020/036952 priority Critical patent/WO2022070266A1/ja
Priority to CN202080105073.0A priority patent/CN116097078B/zh
Priority to JP2022553268A priority patent/JP7374337B2/ja
Publication of WO2022070266A1 publication Critical patent/WO2022070266A1/ja

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Definitions

  • This disclosure relates to a pressure vessel, and particularly to a pressure vessel used for an airtightness test using a differential pressure gauge.
  • the refrigerating cycle device When the refrigerating cycle device is filled with refrigerant during installation and repair, it is necessary to check the airtightness of the refrigerating cycle device before filling in order to avoid leakage of the refrigerant.
  • the airtightness of the refrigeration cycle device is confirmed by an airtight test such as a nitrogen pressure leakage test.
  • nitrogen pressure leakage test nitrogen gas is filled in a refrigerating cycle device and pressurized before filling with the refrigerant, and the airtightness is evaluated by whether or not there is a pressure drop within a certain period of time.
  • the pressure of the refrigeration cycle device is detected by the pressure gauge, and the presence or absence of pressure drop is determined.
  • the measurement range of the pressure gauge depends on the pressurized pressure, so that the measurement range becomes large and the responsiveness to the pressure change becomes poor. Therefore, it took a long time, for example, one day, to evaluate the airtightness after enclosing nitrogen gas in the refrigeration cycle device and pressurizing it.
  • the differential pressure gauge method is a method in which an object to be inspected such as a refrigeration cycle device and a reference object called a master are simultaneously pressurized, and a pressure change due to leakage in the inspected object is detected as a difference from the pressure of the master.
  • the measurement range of the differential pressure gauge does not depend on the pressurizing pressure, so the measurement range can be reduced. Therefore, the responsiveness can be improved as compared with the case of using a pressure gauge.
  • Patent Document 1 proposes to suppress the influence of temperature change by insulating the pressure vessel used as the master of the differential pressure gauge method with a material having low thermal conductivity. ..
  • the present disclosure is for solving the above-mentioned problems, and an object of the present disclosure is to provide a pressure vessel capable of suppressing the influence of temperature changes due to installation conditions.
  • the pressure vessel according to the present disclosure includes a container body capable of enclosing a fluid inside and a heat insulating portion covering the container main body, and the heat insulating portion includes a contact portion in contact with an installation target and an outer peripheral portion other than the contact portion. , And the thermal resistance of the contact portion is larger than the thermal resistance of the outer peripheral portion.
  • the thermal resistance of the contact portion in contact with the installation target larger than the thermal resistance of the outer peripheral portion, the heat conduction from the installation target can be reduced, and the temperature changes depending on the installation condition. The influence of can be suppressed.
  • FIG. It is sectional drawing of the pressure vessel which concerns on Embodiment 1.
  • FIG. It is a schematic block diagram of the airtightness test system which concerns on Embodiment 1.
  • FIG. It is a flowchart which shows the flow of the airtightness test which concerns on Embodiment 1.
  • FIG. It is sectional drawing of the pressure vessel which concerns on modification 2.
  • FIG. It is sectional drawing of the pressure vessel which concerns on modification 3.
  • FIG. It is sectional drawing of the pressure vessel which concerns on the modification 4.
  • FIG. It is a schematic block diagram of the airtightness test system which concerns on Embodiment 3.
  • FIG. 1 is a schematic cross-sectional view of the pressure vessel 100 according to the first embodiment.
  • the pressure vessel 100 is a vessel used as a master in an airtightness test using a differential pressure gauge method. As shown in FIG. 1, the pressure vessel 100 includes a container main body 1, a heat insulating portion 2 that covers the container main body 1, a connection port 3, and a pressure gauge 4.
  • the container body 1 is a spherical container in which a fluid such as nitrogen gas is sealed. By making the shape of the container body 1 spherical, the heat dissipation area can be reduced with respect to the volume, and the heat insulating performance is improved.
  • the shape of the container body 1 is not limited to a spherical shape, and may be, for example, a cylindrical shape.
  • the inside of the container body 1 is pressurized by the enclosed fluid, resulting in a high pressure. Therefore, the container body 1 is made of a metal such as iron, copper, steel or stainless steel.
  • the volume of the container body 1 is, for example, 1000 mL to 3000 mL. The volume of the container body 1 is not limited to this, and is appropriately selected depending on the intended use.
  • the heat insulating portion 2 is made of a material having a lower thermal conductivity than that of the container body 1. By increasing the difference in thermal conductivity between the material of the heat insulating portion 2 and the material of the container body 1, the heat insulating performance of the heat insulating portion 2 can be improved.
  • the heat insulating portion 2 two types of heat insulating materials, which are roughly classified as fiber-based or foamed plastic-based, are used. Fiber-based heat insulating materials include glass wool and rock wool. They have excellent fire resistance and soundproofing, are relatively inexpensive and lightweight.
  • examples of the foamed plastic-based heat insulating material include polystyrene foam and polyurethane foam. Foamed plastic-based insulation has higher insulation performance and is more expensive than fiber-based insulation.
  • the heat insulating portion 2 is fixed to the outer surface of the container body 1 so as to cover the entire container body 1.
  • the heat insulating portion 2 may be attached to the container body 1 with an adhesive tape or the like, or may be bound and fixed to the container body 1 with a binding band or a string.
  • the method for fixing the heat insulating portion 2 is appropriately selected according to the size or material of the container body 1. Further, it is desirable that the heat insulating portion 2 can be adjusted according to the size of the container main body 1 in consideration of the adhesion with the container main body 1.
  • the heat insulating portion 2 has an outer peripheral portion 21 and a contact portion 22.
  • the contact portion 22 is a portion of the heat insulating portion 2 including a contact surface in contact with an installation target in which the pressure vessel 100 is installed. In the case of this embodiment, the pressure vessel 100 is placed on the ground outdoors and installed. Therefore, the portion of the heat insulating portion 2 that covers the bottom of the container body 1 becomes the contact portion 22.
  • the outer peripheral portion 21 is a portion of the heat insulating portion 2 other than the contact portion 22. More specifically, the outer peripheral portion 21 is a portion of the heat insulating portion 2 that does not come into contact with the installation target and covers the side portion and the upper portion of the container main body 1.
  • the outer peripheral portion 21 and the contact portion 22 may be integrally formed of the same material, or may be individually formed of the same material and then integrally joined.
  • the outer peripheral portion 21 has a spherical shape that follows the shape of the container body 1.
  • the contact portion 22 has a rectangular parallelepiped shape and has a flat bottom surface.
  • the pressure vessel 100 can be stably installed on the ground.
  • the thickness L2 of the contact portion 22 is larger than the thickness L1 of the outer peripheral portion 21.
  • the thickness L2 of the contact portion 22 is the thickness from the contact surface in contact with the installation target of the contact portion 22 to the end portion of the bottom portion of the container body 1.
  • the thermal resistance of the contact portion 22 is larger than the thermal resistance of the outer peripheral portion 21.
  • the thickness L1 of the outer peripheral portion 21 and the thickness L2 of the contact portion 22 are appropriately selected according to environmental conditions such as the temperature of the place where the pressure vessel 100 is installed.
  • connection port 3 One end of the connection port 3 is arranged so as to project outside the heat insulating portion 2, and the other end is arranged inside the container body 1.
  • a screw thread is formed at one end of the connection port 3, and is connected to a differential pressure gauge 300 (FIG. 2) described later via a charging hose.
  • the pressure gauge 4 detects the pressure inside the container body 1.
  • the pressure gauge 4 is connected to the container body 1 by, for example, a screw.
  • the pressure receiving portion of the pressure gauge 4 is arranged inside the container body 1, and the dial is arranged so as to project to the outside of the heat insulating portion 2 so that the measurement result can be easily seen.
  • pressurization of about 2 Mpa is performed, so the maximum range of the pressure gauge 4 is set to 2 Mpa or more. Since the pressure inside the container body 1 can be confirmed by the pressure gauge 4, when the fluid is sealed inside the container body 1 during the test, it becomes easy to determine whether the filling is completed.
  • the recovery time can be shortened because the fluid can be recovered while confirming the process in which the inside of the container body 1 is depressurized. Further, even if a fluid leak occurs in the pressure vessel 100 due to a poor connection of the pressure vessel 100 or the like, it is possible to determine the leak from the pressure of the pressure gauge 4.
  • the pressure gauge 4 is not an essential configuration for the pressure vessel 100 and may be omitted.
  • FIG. 2 is a schematic configuration diagram of the airtightness test system according to the first embodiment.
  • a nitrogen pressure leakage test is performed as an airtightness test on the air conditioner to be inspected.
  • the airtightness test system includes a pressure vessel 100 which is a master, an outdoor unit 200 of an air conditioner, a differential pressure gauge 300, and a cylinder 400.
  • the outdoor unit 200 is arranged outdoors.
  • the outdoor unit 200 includes a housing 210 and a connection port 220 in which a fluid for an airtightness test is sealed. Further, inside the housing 210 of the outdoor unit 200, a compressor (not shown), an outdoor heat exchanger, and an outdoor fan are provided.
  • the compressor and outdoor heat exchanger of the outdoor unit 200, and the indoor heat exchanger and pressure reducing valve of the indoor unit provided in the room are connected by a refrigerant pipe to form a refrigerant circuit.
  • the connection port 220 is arranged inside the housing 210 and is connected to the refrigerant pipes constituting the refrigerant circuit.
  • the pressure vessel 100 is installed on the outdoor ground. At this time, the pressure vessel 100 is placed on the ground so that the contact portion 22 comes into contact with the ground.
  • the differential pressure gauge 300 detects the differential pressure between the pressure vessel 100 and the outdoor unit 200.
  • the differential pressure gauge 300 includes a hook 310.
  • the differential pressure gauge 300 is attached so as to be hung on the outdoor unit 200 by hooking a hook 310 on a convex portion or a concave portion provided on the outside of the housing 210 of the outdoor unit 200.
  • the connection port 3 of the pressure vessel 100 and the connection port 220 of the outdoor unit 200 are connected to the measurement port of the differential pressure gauge 300, and the cylinder 400 is connected to the filling port.
  • the cylinder 400 is connected to the differential pressure gauge 300, and the fluid is sealed in the pressure vessel 100 and the outdoor unit 200.
  • the cylinder 400 is, for example, a nitrogen gas cylinder that encloses nitrogen gas.
  • the fluid used in the airtightness test is not limited to nitrogen gas, but may be air or the like.
  • the pressure vessel 100 and the outdoor unit 200 may be pressurized by using a pressurizing device other than the cylinder 400.
  • FIG. 3 is a flowchart showing the flow of the airtightness test according to the first embodiment.
  • the airtightness test of the present embodiment is carried out by a serviceman at the time of installation or repair of the outdoor unit 200.
  • the pressure vessel 100 is installed on the ground near the outdoor unit 200 (S1).
  • the differential pressure gauge 300 is attached to the housing 210 of the outdoor unit 200, and the differential pressure gauge 300 and the pressure vessel 100 are connected by a charging hose (S2).
  • the differential pressure gauge 300 and the outdoor unit 200 are connected (S3). Specifically, a part of the housing 210 of the outdoor unit 200 is opened, and the connection port 220 of the outdoor unit 200 arranged inside the housing 210 and the differential pressure gauge 300 are connected by a charging hose. Then, the differential pressure gauge 300 and the cylinder 400 are connected (S4).
  • the airtightness test is conducted throughout the day.
  • the temperature around the pressure vessel 100 rises due to the radiant heat generated by the sunlight, and when the sun tilts, the outside air temperature drops and the temperature around the pressure vessel 100 drops. Therefore, in order to prevent the influence of the ambient temperature on the pressure vessel 100, it is necessary to take measures against the rise and fall of the ambient temperature, and it is effective to take measures from both heat insulation and heat insulation.
  • the airtightness test of this embodiment is carried out outdoors, and the pressure vessel 100 is placed on the outdoor ground.
  • the pressure vessel 100 is strongly affected not only by the rise and fall of the radiant heat and the outside air temperature, but also by the temperature rise and fall due to the heat conduction from the ground.
  • the thickness of the contact portion 22 in the heat insulating portion 2 that comes into contact with the ground to be installed is made larger than the thickness of the outer peripheral portion 21 that does not come into contact with the ground, and the heat of the contact portion 22 is increased.
  • the resistance is made larger than the thermal resistance of the outer peripheral portion 21.
  • the heat resistance to heat conduction from the ground can be improved, and the influence of the temperature change due to the installation condition in the pressure vessel 100 can be suppressed.
  • the influence of the temperature change on the differential pressure detected by the differential pressure gauge 300 can be reduced, and the evaluation accuracy of the airtightness of the outdoor unit 200 can be improved.
  • FIG. 4 is a schematic cross-sectional view of the pressure vessel 100A according to the first modification.
  • the heat insulating portion 2A of this modification has an outer peripheral portion 21 and a contact portion 23 made of a material having a lower thermal conductivity than the material of the outer peripheral portion 21.
  • the outer peripheral portion 21 is made of glass wool and the contact portion 23 is made of polystyrene foam.
  • the thermal resistance of the contact portion 23 of the heat insulating portion 2A is larger than the thermal resistance of the outer peripheral portion 21.
  • the thickness L2 of the contact portion 23 may be larger than the thickness L1 of the outer peripheral portion 21, or may be the same as the thickness L1 of the outer peripheral portion 21.
  • FIG. 5 is a schematic cross-sectional view of the pressure vessel 100B according to the modified example 2.
  • the heat insulating portion 2B of this modification comprises an outer peripheral portion 21A that covers the entire container body 1 including the bottom portion, and a contact portion 24 provided at the bottom portion of the outer peripheral portion 21A.
  • the contact portion 24 is made of a material having a lower thermal conductivity than the material of the outer peripheral portion 21A.
  • the outer peripheral portion 21 is made of glass wool and the contact portion 23 is made of polystyrene foam.
  • the contact portion 24 is attached to the bottom of the outer peripheral portion 21A with an adhesive tape or an adhesive.
  • the thermal resistance of the contact portion 24 of the heat insulating portion 2B is larger than the thermal resistance of the outer peripheral portion 21A.
  • the material of the contact portion 24 and the outer peripheral portion 21A may be the same.
  • the thickness of the heat insulating portion 2B at the bottom of the container body 1 is the sum of the thickness of the contact portion 24 and the thickness of the outer peripheral portion 21A, and the influence of heat conduction from the ground can be suppressed.
  • FIG. 6 is a schematic cross-sectional view of the pressure vessel 100C according to the modified example 3.
  • the heat insulating portion 2C of this modification comprises an outer peripheral portion 21A that covers the entire container body 1 including the bottom portion, and a contact portion 25 provided at the bottom portion of the outer peripheral portion 21A.
  • the contact portion 25 of this modification is composed of two or more legs, and is composed of a material having a lower thermal conductivity than the material of the outer peripheral portion 21A. By forming the contact portion 25 with a plurality of legs, the contact area with the ground to be installed can be reduced and the thermal resistance of the contact portion 25 can be made larger than the thermal resistance of the outer peripheral portion 21A.
  • the reflective material 26 is provided at the bottom of the outer peripheral portion 21A, that is, the portion of the outer peripheral portion 21A facing the installation target.
  • the reflective material 26 is made of a material having a higher reflectance than the heat insulating portion 2C.
  • a general heat insulating material has a reflectance of about 10%.
  • a yellow reflective tape having a reflectance of about 60 to 80% or an aluminum tape having a reflectance of about 70 to 85% is used.
  • the reflective material 26 is attached to the bottom of the outer peripheral portion 21A with an adhesive or an adhesive tape.
  • the method of fixing the reflective material 26 is not limited to these, and is appropriately selected in consideration of the material of the outer peripheral portion 21A.
  • the color of the bottom of the outer peripheral portion 21A may be white or the like having a high reflectance. As a result, it is possible to reduce the labor of attaching the reflective material 26 and the cost of the material.
  • Examples of the method for making the color of the bottom of the outer peripheral portion 21A white include adopting an originally white heat insulating material or coloring the outer peripheral portion 21A into white with paint. The reflectance of white paint is 70-85%.
  • the reflectance of the portion of the outer peripheral portion 21A facing the installation target higher than the reflectance of the contact portion 25, it is possible to reduce the intrusion of radiant heat from the ground when the pressure vessel 100C is installed on the ground. It is possible to suppress an increase in the temperature of the bottom of the pressure vessel 100C.
  • the thermal resistance of the contact portion 25 of the heat insulating portion 2C is larger than the thermal resistance of the outer peripheral portion 21A.
  • FIG. 7 is a schematic cross-sectional view of the pressure vessel 100D according to the modified example 4.
  • the outer peripheral portion 21B of the heat insulating portion 2D may have a rectangular parallelepiped shape.
  • the configuration of the contact portion 22 is the same as that of the first embodiment. Further, the thickness L2 of the contact portion 22 is larger than the thickness L1 of the outer peripheral portion 21B.
  • the thermal resistance of the contact portion 22 of the heat insulating portion 2D is larger than the thermal resistance of the outer peripheral portion 21B.
  • FIG. 8 is a schematic cross-sectional view of the pressure vessel 100E according to the second embodiment.
  • the pressure vessel 100E of the second embodiment is different from the first embodiment in that the pressure vessel 100E is provided with the temperature sensor 5.
  • Other configurations of the pressure vessel 100E are the same as those in the first embodiment.
  • the temperature sensor 5 is arranged between the container body 1 and the heat insulating portion 2 and detects the temperature of the container body 1.
  • the temperature sensor 5 is, for example, a thermocouple.
  • the temperature sensor 5 is attached to the outer surface of the container body 1 with an adhesive tape, or is tied and fixed with a binding band.
  • a display device 50 that displays the measurement result by the temperature sensor 5 is connected to the temperature sensor 5.
  • the length of the wiring connecting the temperature sensor 5 and the display device 50 is 0.5 m to 2.0 m.
  • the display device 50 can be arranged outside the pressure vessel 100E, and the measurement result of the temperature of the pressure vessel 100E can be monitored from the outside.
  • the pressure vessel 100E of the present embodiment is provided with the temperature sensor 5 so that the temperature change of the vessel body 1 during the airtightness test can be detected. This makes it possible to determine whether the change in the differential pressure detected by the differential pressure gauge 300 is due to a leak in the outdoor unit 200 or a temperature change. Further, the temperature of the container body 1 detected by the temperature sensor 5 can be used to correct the differential pressure detected by the differential pressure gauge 300. As a result, the evaluation accuracy of the airtightness of the outdoor unit 200 can be further improved.
  • FIG. 9 is a schematic configuration diagram of the airtightness test system according to the third embodiment.
  • the installation status of the pressure vessel 100 is different from that of the first embodiment.
  • the configuration of the pressure vessel 100 and the configuration of the other airtightness test system are the same as those of the first embodiment.
  • the pressure vessel 100 which is the master, is arranged in the housing 210 of the outdoor unit 200. That is, in the present embodiment, the installation target of the pressure vessel 100 is the housing 210 of the outdoor unit 200, and the contact portion 22 of the pressure vessel 100 comes into contact with the inner surface of the housing 210.
  • the pressure vessel 100 By arranging the pressure vessel 100 inside the outdoor unit 200, the influence of radiant heat due to solar radiation is suppressed. However, the pressure vessel 100 is affected by heat conduction from the inner surface of the housing 210 of the outdoor unit 200.
  • the thickness of the contact portion 22 of the heat insulating portion 2 that contacts the inner surface of the housing 210 to be installed is larger than the thickness of the outer peripheral portion 21 that does not contact, and the heat of the contact portion 22 is increased.
  • the resistance is larger than the thermal resistance of the outer peripheral portion 21.
  • the influence of the temperature change due to the heat conduction from the inner surface of the housing 210 of the outdoor unit 200 can be suppressed, and as a result, the evaluation accuracy of the airtightness of the outdoor unit 200 can be improved. can.
  • the temperature of the pressure vessel 100 can be adjusted to the temperature inside the outdoor unit 200.
  • the temperature difference between the pressure vessel 100 and the outdoor unit 200 can be reduced. Therefore, the heat insulating performance of the heat insulating portion 2 of the pressure vessel 100 may be lower than that of the first embodiment.
  • the thickness of the outer peripheral portion 21 and the contact portion 22 of the heat insulating portion 2 may be made smaller than that of the first embodiment, or the material of the heat insulating portion 2 may be a material having a higher thermal conductivity than that of the first embodiment. good. As a result, it is possible to reduce the material of the heat insulating portion 2 or reduce the cost as compared with the first embodiment.
  • FIG. 10 is a schematic configuration diagram of the airtightness test system according to the fourth embodiment.
  • the airtightness test system of the present embodiment differs from that of the first embodiment in the configuration and installation status of the pressure vessel 100F.
  • the configuration of the other airtightness test system is the same as that of the first embodiment.
  • the master pressure vessel 100F is attached to the housing 210 of the outdoor unit 200. That is, in the present embodiment, the installation target of the pressure vessel 100F is the housing 210 of the outdoor unit 200.
  • the heat insulating portion 2F of the pressure vessel 100F includes a contact portion 22A provided so as to cover one side portion of the container main body 1 and an outer peripheral portion 21C provided so as to cover the other side portion and the bottom portion of the container main body 1. Have.
  • the thickness of the contact portion 22A is larger than the thickness of the outer peripheral portion 21C, and the thermal resistance of the contact portion 22A is larger than the thermal resistance of the outer peripheral portion 21C. Then, the contact portion 22A of the pressure vessel 100F comes into contact with the side surface of the housing 210.
  • the pressure vessel 100F is provided with a hook 6 for being attached to the housing 210 of the outdoor unit 200.
  • the hook 6 of the pressure vessel 100F is hooked on the convex portion or the concave portion provided on the side surface of the housing 210 of the outdoor unit 200, and the pressure vessel 100F is attached to the outdoor unit 200.
  • Subsequent test methods are the same as steps S2 to S10 in FIG. 3 of the first embodiment.
  • the pressure vessel 100F is affected by heat conduction from the side surface of the housing 210.
  • the thickness of the contact portion 22A in the heat insulating portion 2F that contacts the side surface of the housing 210 to be installed is larger than the thickness of the outer peripheral portion 21C that does not contact, and the heat of the contact portion 22A.
  • the resistance is larger than the thermal resistance of the outer peripheral portion 21C. Therefore, also in the present embodiment, the influence of the temperature change due to the heat conduction from the side surface of the housing 210 of the outdoor unit 200 can be suppressed, and the evaluation accuracy of the airtightness of the outdoor unit 200 can be improved.
  • the present disclosure is not limited to the above-described embodiment, and can be variously modified and combined without departing from the gist of the present disclosure. ..
  • the pressure vessel 100 is not limited to the one used as the master of the airtightness test of the outdoor unit 200 of the air conditioner, and may be used as the master of the airtightness test of the object to be inspected other than the air conditioner.
  • the reflective material 26 may be provided on a part or the whole of the outer surface of the outer peripheral portion 21.
  • a heat shield sheet may be provided on the outer surface of the outer peripheral portion 21. In the case of only the outer peripheral portion 21, about 5% to 10% of radiant heat can be blocked, whereas by providing a heat shield sheet, 98% of radiant heat can be blocked. However, since the heat shield sheet receives heat conduction when it comes into direct contact with a solid or liquid, it is preferable not to provide the heat shield sheet on the contact portion 22.
  • the size and position of the contact portion 22 of the heat insulating portion 2 are not limited to the above-described embodiment and modification, and can be appropriately deformed according to the installation target. Further, the configuration in which the thermal resistance of the contact portion 22 of the heat insulating portion 2 is larger than the thermal resistance of the outer peripheral portion 21 is not limited to the above-described embodiment and modification. For example, the thermal resistance may be increased by providing a plurality of recesses on the bottom surface of the contact portion 22 to reduce the contact area with the installation target.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
PCT/JP2020/036952 2020-09-29 2020-09-29 圧力容器 WO2022070266A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2020/036952 WO2022070266A1 (ja) 2020-09-29 2020-09-29 圧力容器
CN202080105073.0A CN116097078B (zh) 2020-09-29 2020-09-29 压力容器
JP2022553268A JP7374337B2 (ja) 2020-09-29 2020-09-29 圧力容器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/036952 WO2022070266A1 (ja) 2020-09-29 2020-09-29 圧力容器

Publications (1)

Publication Number Publication Date
WO2022070266A1 true WO2022070266A1 (ja) 2022-04-07

Family

ID=80951556

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/036952 WO2022070266A1 (ja) 2020-09-29 2020-09-29 圧力容器

Country Status (3)

Country Link
JP (1) JP7374337B2 (enrdf_load_stackoverflow)
CN (1) CN116097078B (enrdf_load_stackoverflow)
WO (1) WO2022070266A1 (enrdf_load_stackoverflow)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163897A (ja) * 1982-03-19 1983-09-28 Ishikawajima Harima Heavy Ind Co Ltd 低温タンクの支持構造
JP2004526101A (ja) * 2000-12-20 2004-08-26 エナージー　コンバーション　デバイセス　インコーポレイテッド 統合的熱管理装置を備えた水素貯蔵床装置
JP2017026559A (ja) * 2015-07-28 2017-02-02 株式会社日立製作所 ガスリーク検知装置およびガスリーク検知方法
JP2017075842A (ja) * 2015-10-14 2017-04-20 株式会社カネカ エアリークテスターの基準容器及びリークテスト方法
JP2020132246A (ja) * 2019-02-22 2020-08-31 株式会社Ｉｈｉプラント タンクおよびその施工方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852082A (ja) * 1981-09-14 1983-03-28 株式会社日立製作所 タンクの支持構造
JP4920468B2 (ja) * 2007-03-26 2012-04-18 ニチアス株式会社 断熱容器及びその製造方法
KR20100102885A (ko) * 2009-03-12 2010-09-27 주식회사 디섹 Ｌｎｇ저장탱크의 기밀검사를 위한 압력 및 온도 제어 모니터링시스템
JP4924745B2 (ja) * 2010-08-12 2012-04-25 東洋製罐株式会社 密封容器の密封検査方法、及び、その検査装置
JP2013172692A (ja) * 2012-02-27 2013-09-05 Samson Co Ltd 加熱殺菌装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163897A (ja) * 1982-03-19 1983-09-28 Ishikawajima Harima Heavy Ind Co Ltd 低温タンクの支持構造
JP2004526101A (ja) * 2000-12-20 2004-08-26 エナージー　コンバーション　デバイセス　インコーポレイテッド 統合的熱管理装置を備えた水素貯蔵床装置
JP2017026559A (ja) * 2015-07-28 2017-02-02 株式会社日立製作所 ガスリーク検知装置およびガスリーク検知方法
JP2017075842A (ja) * 2015-10-14 2017-04-20 株式会社カネカ エアリークテスターの基準容器及びリークテスト方法
JP2020132246A (ja) * 2019-02-22 2020-08-31 株式会社Ｉｈｉプラント タンクおよびその施工方法

Also Published As

Publication number Publication date
JP7374337B2 (ja) 2023-11-06
CN116097078B (zh) 2024-07-09
JPWO2022070266A1 (enrdf_load_stackoverflow) 2022-04-07
CN116097078A (zh) 2023-05-09

Similar Documents

Publication Publication Date Title
AU2018207266B2 (en) Device and method for determining the heat insulation quality of dual-wall, vacuum-insulated containers
US10564063B2 (en) System and method for detecting failures in insulating glass units
EP2510508A1 (en) Multi -sheet glazing unit with internal sensor
CN110394202B (zh) 一种可实时观测的模拟深海低温超高压环境的测试装置
KR200462979Y1 (ko) 누수 감지 기능을 구비한 격막식 팽창탱크
US20200132228A1 (en) Conduit seal assembly
CN101529170A (zh) Co2制冷系统中的制冷剂释放检测
CN110529974B (zh) 空调器的冷媒泄露检测方法、冷媒泄露检测装置及空调器
WO2022070266A1 (ja) 圧力容器
JP2015113991A (ja) 空気調和機及び空気調和機用熱交換器の腐食診断方法
KR20170015865A (ko) 배관용 히팅 보온 커버
JP2012122925A (ja) 漏洩検出装置及び空調装置
JP7433508B2 (ja) 漏洩判定装置および漏洩判定システム
CN210487175U (zh) 一种管道法兰泄漏在线监测设备
EP4323742A1 (en) Apparatus and method for automatic leak detection
CN110095146A (zh) 带有mems传感系统的泄爆墙监控装置及其布置方法
CN108332912A (zh) 一种水下连接器用高低温循环高压试验系统
JP3093940B2 (ja) 電気冷蔵庫
US9400055B2 (en) Bladder accumulator volume indicating device
JPH06117736A (ja) 冷媒封入量検知装置
KR200281814Y1 (ko) 동파방지용 수도계량기
JPH07324988A (ja) 密閉型圧縮機
EP3087299B1 (en) Conduit seal assembly
CN210285439U (zh) 带有平衡阀的移动式槽罐
CN104110530B (zh) 隔热密封装置和空调器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20956196

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022553268

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20956196

Country of ref document: EP

Kind code of ref document: A1