JPH0348508Y2 - - Google Patents

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Publication number
JPH0348508Y2
JPH0348508Y2 JP1983023338U JP2333883U JPH0348508Y2 JP H0348508 Y2 JPH0348508 Y2 JP H0348508Y2 JP 1983023338 U JP1983023338 U JP 1983023338U JP 2333883 U JP2333883 U JP 2333883U JP H0348508 Y2 JPH0348508 Y2 JP H0348508Y2
Authority
JP
Japan
Prior art keywords
temperature
liquid
mounting flange
tube
cryogenic liquid
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
JP1983023338U
Other languages
Japanese (ja)
Other versions
JPS59128539U (en
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 filed Critical
Priority to JP2333883U priority Critical patent/JPS59128539U/en
Publication of JPS59128539U publication Critical patent/JPS59128539U/en
Application granted granted Critical
Publication of JPH0348508Y2 publication Critical patent/JPH0348508Y2/ja
Granted legal-status Critical Current

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  • Measuring Temperature Or Quantity Of Heat (AREA)

Description

【考案の詳細な説明】 本考案はLNG(液化天然ガス)の極低温液体の
測温装置に関するものである。
[Detailed description of the invention] The present invention relates to a temperature measuring device for cryogenic liquid such as LNG (liquefied natural gas).

従来、液体の温度は、液体が流過する配管の管
壁に測温体の感温部を埋設して測定している。配
管の管壁の温度はあくまでも管壁の温度であつて
液体そのものの温度ではなく、特に極低温液体の
LNGでは大気温度の影響を受け易い。このため、
第1図に示すように、極低温液体の温度測定に配
管に装着孔を貫設しそこから保護管1の中央部に
位置させ収容した棒状のシース型測温体2を挿入
し、極低温の液体内に没入させる。測温体2は液
中にあるといえども保護管1で覆われて液体に直
接接触してなくその基端側は大気に露出し外熱
(大気温度)を伝達し実温より高めの温度を指示
し易く、保護管1の外熱の影響をなくするために
は液中に没入する保護管1の長さを十分に長く設
定する必要がある。また、保護管1は測温体2を
中央に位置させ収容しているものであり熱容量が
大きく応答速度が遅く温度の真値を指示するのに
時間遅れがある。このように、測温体2と液体と
の間には保護管1が介在し測温体2の感温部2a
は液体が直接接触してないため、保護管の熱抵抗
を可及的に減らし液温と感温部2aとの温度差を
減少させる必要がある。さらに、−160℃程度の極
低温のLNGの測定であると、冷熱の影響により
保護管1の基端を固着する取付フランジ3上面ま
で冷却し水分が凝結し易くなり、凝結が、取付フ
ランジ3の上方に連結されたターミナルヘツド4
内に収容された端子盤までいたると端子間の絶縁
がなくなり指示不良を生じ易い。
Conventionally, the temperature of a liquid has been measured by embedding a temperature sensing part of a temperature measuring element in the wall of a pipe through which the liquid flows. The temperature of the pipe wall of a pipe is the temperature of the pipe wall, not the temperature of the liquid itself, especially for cryogenic liquids.
LNG is easily affected by atmospheric temperature. For this reason,
As shown in Fig. 1, in order to measure the temperature of cryogenic liquid, a mounting hole is provided in the piping, and a rod-shaped sheath type temperature measuring element 2 housed in the center of the protection tube 1 is inserted through the installation hole to measure the temperature of cryogenic liquid. immerse it in the liquid. Even though the temperature measuring element 2 is in the liquid, it is covered by the protective tube 1 and is not in direct contact with the liquid, but its base end is exposed to the atmosphere and transmits external heat (atmospheric temperature), resulting in a temperature higher than the actual temperature. In order to easily indicate the temperature and to eliminate the influence of external heat on the protective tube 1, it is necessary to set the length of the protective tube 1 immersed in the liquid to be sufficiently long. Further, the protection tube 1 houses the temperature measuring element 2 in the center, and has a large heat capacity, a slow response speed, and a time delay in indicating the true value of the temperature. In this way, the protective tube 1 is interposed between the temperature measuring element 2 and the liquid, and the temperature sensing part 2a of the temperature measuring element 2 is
Since the liquid is not in direct contact with the protective tube, it is necessary to reduce the thermal resistance of the protective tube as much as possible to reduce the temperature difference between the liquid temperature and the temperature sensing part 2a. Furthermore, when measuring extremely low temperature LNG of around -160°C, the influence of cold heat cools the top surface of the mounting flange 3 that fixes the proximal end of the protection tube 1, making it easy for moisture to condense. Terminal head 4 connected above
When reaching the terminal board housed inside, the insulation between the terminals is lost, which tends to cause faulty indications.

また、測温体2の交換をしようとして測温体2
を取り出すと、極低温のLNGが流れている配管
内と大気とが連通しLNGがすぐ気化してしまう。
LNGの流れをバルブ等で遮断することなく測温
体2の鋼管ができることが望まれる。
Also, when trying to replace the temperature sensor 2, the temperature sensor 2
When the LNG is removed, the inside of the pipe in which the cryogenic LNG is flowing communicates with the atmosphere, causing the LNG to immediately vaporize.
It is desired that the steel pipe of the thermometer 2 can be made without blocking the flow of LNG with a valve or the like.

そこで、本考案は上記の事情に鑑み、配管内を
流れる極低温液体のLNGの温度を正確に測定す
べく、棒状のシース型測温体を薄肉の遮蔽筒で覆
つて保護管内に収容して液体内に没入させ、測温
体の交換の時でもLNGと大気とを連通しないよ
うにし、測温体先端の感温部に対向する保護管の
側壁に液体の導入孔を穿設したものである。
Therefore, in view of the above-mentioned circumstances, in order to accurately measure the temperature of the cryogenic liquid LNG flowing inside the pipe, the present invention was developed by covering a rod-shaped sheath type temperature measuring element with a thin shielding tube and housing it in a protection tube. It is immersed in liquid to prevent communication between LNG and the atmosphere even when replacing the temperature sensor, and a liquid introduction hole is drilled in the side wall of the protection tube facing the temperature sensing part at the tip of the temperature sensor. be.

以下、本考案を第2図に基づいて詳細に説明す
る。
Hereinafter, the present invention will be explained in detail based on FIG. 2.

第2図の測温装置は、通常図に向かつて右側を
上方として使用し、配管内を流れる液体をバルブ
等で遮断することなく測温体2の交換を可能とし
たものである。すなわち、取付フランジ3上に基
板12を載置し、基板12上面中央に連結管6を
起立させ、連結管6上端にターミナルヘツド4を
取付け、基板12下端中央に測温体2を垂下状に
して溶接により固着し測温体2を挿通させて端子
盤と接続する。一方、取付フランジ3中央下面に
は前記測温体2を覆い、測温体2を取り出した
際、極低温液体と大気との連通を遮蔽する熱伝導
のよい薄肉の遮蔽筒13を固着する。基板12に
取付けた測温体2,連結管6,ターミナルヘツド
4は取付フランジ3にボルト14により螺締し、
測温体2の交換の際は遮蔽筒13が配管に取付け
られており極低温液体のLNGと大気とを遮断し
た状態で、ボルトを緩めて取外すことができる。
The temperature measuring device shown in FIG. 2 is normally used with the right side facing upward as viewed from the diagram, and allows the temperature measuring element 2 to be replaced without blocking the liquid flowing in the pipe with a valve or the like. That is, the board 12 is placed on the mounting flange 3, the connecting pipe 6 is erected at the center of the upper surface of the board 12, the terminal head 4 is attached to the upper end of the connecting pipe 6, and the temperature sensing element 2 is placed hanging down at the center of the lower end of the board 12. The thermometer 2 is fixed by welding and connected to the terminal board by inserting the temperature sensor 2 therethrough. On the other hand, a thin shielding tube 13 with good thermal conductivity is fixed to the central lower surface of the mounting flange 3 to cover the temperature measuring element 2 and to block communication between the cryogenic liquid and the atmosphere when the temperature measuring element 2 is taken out. The temperature sensing element 2, connecting pipe 6, and terminal head 4 attached to the board 12 are screwed to the mounting flange 3 with bolts 14.
When replacing the temperature sensing element 2, the shielding tube 13 is attached to the pipe and can be removed by loosening the bolts while blocking the cryogenic liquid LNG from the atmosphere.

本考案は、上述のように、棒状のシース型測温
体2を−160℃程度の極低温の液体内に没入して
測温する極低温液体の測温装置であつて、測温体
2を、測温体2を取り出した際、極低温液体と大
気との連通を遮蔽する薄肉の遮蔽筒13で覆つて
保護管内5に収容し、保護管5の基端を取付フラ
ンジ3に固着し、取付フランジ3上に装着する基
板12に取付フランジ3を挿通する測温体2の基
端および遮蔽筒13の基端を固着し、基板12上
に連結管6を起立させ、連結管6上端にターミナ
ルヘツド4を取付け、前記測温体2を垂設した基
板12をボルト14により取付フランジ3に取付
け取り外し可能とし、測温体2先端の感温部2a
に対向する保護管5の側壁に液体の導入孔7を穿
設し、保護管5と遮蔽筒13との間で感温部2a
の上端側と下端側とに断熱性の間材9を介在さ
せ、連結管6に冷熱を防ぐフイン11を設けた極
低温液体の測温装置であり、測温体を液中に没入
させ、しかも保護管には感温部に対向する箇所に
液体の導入孔が穿設されて感温部は薄肉の遮蔽筒
を介して液体に接触するので、感温部の近傍に位
置する保護管の熱容量に関係なく液体の温度を正
確で応答速度も速く測定できる。また、本考案の
測温体は保護管に収容されているため液体の流れ
により折れ曲がるようなこともない。
As described above, the present invention is a cryogenic liquid temperature measuring device that measures the temperature of a cryogenic liquid by immersing the bar-shaped sheath type temperature measuring element 2 into a cryogenic liquid of about -160°C. When the thermometer 2 is taken out, it is covered with a thin-walled shielding tube 13 that blocks communication between the cryogenic liquid and the atmosphere and housed in the protection tube 5, and the proximal end of the protection tube 5 is fixed to the mounting flange 3. , fix the base end of the temperature sensing element 2 through which the mounting flange 3 is inserted and the base end of the shielding tube 13 to the base plate 12 mounted on the mounting flange 3, make the connecting pipe 6 stand up on the base plate 12, and fix the upper end of the connecting pipe 6. The terminal head 4 is attached to the terminal head 4, and the substrate 12 on which the temperature sensing element 2 is vertically mounted is attached to and detachable from the mounting flange 3 with bolts 14, and the temperature sensing part 2a at the tip of the temperature sensing element 2
A liquid introduction hole 7 is bored in the side wall of the protective tube 5 facing the temperature sensing portion 2a between the protective tube 5 and the shielding tube 13.
This is a temperature measuring device for a cryogenic liquid, in which a heat insulating material 9 is interposed between the upper end side and the lower end side, and a connecting pipe 6 is provided with fins 11 to prevent cold heat. In addition, the protection tube has a liquid introduction hole in a location facing the temperature sensing part, and the temperature sensing part comes into contact with the liquid through a thin shielding tube, so that the protection tube located near the temperature sensing part can The temperature of a liquid can be measured accurately and with a fast response time, regardless of its heat capacity. Furthermore, since the temperature measuring element of the present invention is housed in a protective tube, it will not bend due to the flow of liquid.

さらに、測温体の感温部の上下端側には断熱性
の間材が介在されているので外熱が感温部に伝導
されないばかりか測温部を十分に補強する。保護
管には下部に液体の導入孔が穿設してあるため、
保護管内には液体が充満して常に薄肉の遮蔽筒を
介して感温部と接触している。LNGの極低温液
体の測定の際は冷熱が配管に位置する端子盤まで
伝導し端子間の絶縁がなくなり指示不良を生じ易
いが、連結管にフインを突設しているので、ここ
から冷熱が発散されて端子間で絶縁不良は生じな
い。
Furthermore, since the heat-insulating interlayer is interposed between the upper and lower ends of the temperature-sensing part of the thermometer, external heat is not conducted to the temperature-sensing part, and the temperature-sensing part is sufficiently reinforced. The protection tube has a liquid introduction hole at the bottom, so
The inside of the protective tube is filled with liquid and is always in contact with the temperature sensing part through a thin shielding tube. When measuring cryogenic liquids such as LNG, the cold heat is conducted to the terminal board located in the pipe, and the insulation between the terminals is lost, which tends to cause poor readings. There is no insulation failure between the terminals.

その上、測温体の交換をしようとして測温体を
取り出すと、極低温の−160℃程度のLNGが流れ
ている配管内と大気とが連通しLNGがすぐ気化
してしまうが、遮蔽筒を介在させているので、
LNGと大気とを遮断しており、バルブ等を作動
させることなく自由に測温体の交換が可能で、
LNGの測温装置での問題点が解決でき実用に供
することができる。
Furthermore, if you take out the temperature sensor to replace it, the inside of the pipe where the extremely low temperature of -160℃ LNG is flowing will communicate with the atmosphere, and the LNG will immediately vaporize. Because we are intervening,
The LNG is isolated from the atmosphere, and the temperature sensor can be replaced freely without operating any valves.
The problems with the LNG temperature measuring device can be solved and it can be put into practical use.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は液体の測温装置の縦断面図、第2図は
本考案の具体的実施例の縦断面図である。 2……シース型測温体、4……ターミナルヘツ
ド、13……遮蔽筒、2a……感温部、5……保
護管、7……導入孔、3……取付フランジ、9…
…間材、12……基板、11……フイン、6……
連結管。
FIG. 1 is a longitudinal sectional view of a liquid temperature measuring device, and FIG. 2 is a longitudinal sectional view of a specific embodiment of the present invention. 2... Sheath type thermometer, 4... Terminal head, 13... Shield tube, 2a... Temperature sensing part, 5... Protection tube, 7... Introductory hole, 3... Mounting flange, 9...
...Intermediate material, 12...Substrate, 11...Fin, 6...
Connecting pipe.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 棒状のシース型測温体2を−160℃程度の極低
温の液体内に没入して測温する極低温液体の測温
装置であつて、測温体2を、測温体2を取り出し
た際、極低温液体と大気との連通を遮蔽する薄肉
の遮蔽筒13で覆つて保護管5内に収容し、保護
管5の基端および遮蔽筒13の基端を取付フラン
ジ3に固着し、取付フランジ3上に装着する基板
12に取付フランジ3を挿通する測温体2の基端
を固着し、基板12上に連結管6を起立させ、連
結管6上端にターミナルヘツド4を取付け、前記
測温体2を垂設した基板12をボルト14により
取付フランジ3に取付け取り外し可能とし、測温
体2先端の感温部2aに対向する保護管5の側壁
に液体の導入孔7を穿設し、保護管5と遮蔽筒1
3との間で感温部2aの上端側と下端側とに断熱
性の間材9を介在させ、連結管6に冷熱の伝達を
防ぐフイン11を設けた極低温液体の測温装置。
This is a cryogenic liquid temperature measuring device that measures the temperature by immersing a rod-shaped sheath type temperature measuring body 2 into a cryogenic liquid of about -160°C, and the temperature measuring body 2 is taken out. At this time, the cryogenic liquid is covered with a thin shielding cylinder 13 that blocks communication between the cryogenic liquid and the atmosphere and housed in the protective tube 5, and the proximal end of the protective tube 5 and the proximal end of the shielding cylinder 13 are fixed to the mounting flange 3, The base end of the temperature sensing element 2 through which the mounting flange 3 is inserted is fixed to the board 12 mounted on the mounting flange 3, the connecting pipe 6 is erected on the board 12, the terminal head 4 is attached to the upper end of the connecting pipe 6, and the A substrate 12 on which the temperature sensor 2 is vertically mounted is attached to the mounting flange 3 with bolts 14 so that it can be removed, and a liquid introduction hole 7 is bored in the side wall of the protective tube 5 facing the temperature sensing part 2a at the tip of the temperature sensor 2. Then, the protection tube 5 and the shielding tube 1
3, a heat insulating interlayer 9 is interposed between the upper end and the lower end of the temperature sensing part 2a, and the connecting pipe 6 is provided with fins 11 to prevent the transfer of cold heat.
JP2333883U 1983-02-18 1983-02-18 Liquid temperature measuring device Granted JPS59128539U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2333883U JPS59128539U (en) 1983-02-18 1983-02-18 Liquid temperature measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2333883U JPS59128539U (en) 1983-02-18 1983-02-18 Liquid temperature measuring device

Publications (2)

Publication Number Publication Date
JPS59128539U JPS59128539U (en) 1984-08-29
JPH0348508Y2 true JPH0348508Y2 (en) 1991-10-16

Family

ID=30154425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2333883U Granted JPS59128539U (en) 1983-02-18 1983-02-18 Liquid temperature measuring device

Country Status (1)

Country Link
JP (1) JPS59128539U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4751492B2 (en) * 2007-11-02 2011-08-17 三菱重工業株式会社 thermocouple
WO2018198263A1 (en) 2017-04-27 2018-11-01 株式会社テイエルブイ Sensor device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245260A (en) * 1962-10-29 1966-04-12 Rosemount Eng Co Ltd Temperature sensor for high velocity liquid flows

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245260A (en) * 1962-10-29 1966-04-12 Rosemount Eng Co Ltd Temperature sensor for high velocity liquid flows

Also Published As

Publication number Publication date
JPS59128539U (en) 1984-08-29

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