JPH0610640B2 - Pressure / temperature measurement sensor for high temperature fluids - Google Patents
Pressure / temperature measurement sensor for high temperature fluidsInfo
- Publication number
- JPH0610640B2 JPH0610640B2 JP1465388A JP1465388A JPH0610640B2 JP H0610640 B2 JPH0610640 B2 JP H0610640B2 JP 1465388 A JP1465388 A JP 1465388A JP 1465388 A JP1465388 A JP 1465388A JP H0610640 B2 JPH0610640 B2 JP H0610640B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- temperature
- diaphragm
- high temperature
- contact
- 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 - Lifetime
Links
- 239000012530 fluid Substances 0.000 title claims description 11
- 238000009530 blood pressure measurement Methods 0.000 title description 4
- 238000009529 body temperature measurement Methods 0.000 title description 3
- 238000003825 pressing Methods 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 229910001179 chromel Inorganic materials 0.000 description 5
- 229910000809 Alumel Inorganic materials 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000012777 electrically insulating material Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えば、溶融樹脂、油、あるいは蒸気等の高
温流体の同一箇所の圧力と温度とを同時に測れるように
した高温流体用の圧力・温度測定センサに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pressure for a high temperature fluid such as a molten resin, oil, or steam, which enables simultaneous measurement of the pressure and temperature at the same location. -Regarding the temperature measurement sensor.
一般に、プラスチックの押圧成形では、溶融樹脂の圧
力、温度を測定して、その挙動を的確に捉えることで、
製品の品質を高め、かつ押出成形機の安全と効率的稼働
が行われている。Generally, in plastic pressure molding, by measuring the pressure and temperature of the molten resin and accurately grasping its behavior,
The product quality is improved and the extruder is operated safely and efficiently.
この場合、溶融樹脂等の高温流体の圧力と温度を１個の
センサーで同時に測定するには、圧力の方では、被測定
物である高温流体に第１ダイヤフラムを接触させ、この
第１ダイヤフラムの動きを、圧力連結棒を介して、圧力
測定用のストレインゲージ貼着された第２ダイヤフラム
に伝え、ストレインゲージにより圧力の測定が行われて
いるが、温度の方では、第１ダイヤフラムの表面（即
ち、溶融樹脂温度）の温度を測定できるものがないた
め、第１ダイヤフラムの出来丈近くに、と云ってもある
程度離れた位置に、熱電対を配置して、これにより温度
の測定が行われているのが実状である。In this case, in order to simultaneously measure the pressure and temperature of a high temperature fluid such as a molten resin with one sensor, the pressure side should bring the first diaphragm into contact with the high temperature fluid that is the object to be measured, and the first diaphragm The movement is transmitted to the second diaphragm attached to the strain gauge for pressure measurement through the pressure connecting rod, and the pressure is measured by the strain gauge. However, in the temperature direction, the surface of the first diaphragm ( That is, since there is nothing that can measure the temperature of the molten resin), the thermocouple is arranged near the working length of the first diaphragm, but at a position apart to some extent, and the temperature is measured by this. It is the actual situation.
このような方法で圧力、温度の測定を行うと、圧力測定
の方は問題がないとしても、温度測定の方は第１ダイヤ
フラムからかなり離れた位置で温度を測定していること
になり、実際に高温流体が接している第１ダイヤフラム
表面の温度とは幾分異なるから、温度勾配に応じて、低
めの温度が指示され、高温流体それ自身の正確な温度の
測定が行えない難点があった。When the pressure and temperature are measured by such a method, even though the pressure measurement has no problem, the temperature measurement actually measures the temperature at a position far from the first diaphragm. Since the temperature of the first diaphragm surface, which is in contact with the high temperature fluid, is somewhat different, a lower temperature is indicated according to the temperature gradient, and there is a problem that the temperature of the high temperature fluid itself cannot be accurately measured. .
高温流体が接触する第１ダイヤフラム１を熱電対の一方
の金属で作り、この金属に接触する押圧棒３をその熱電
対の他方の金属で作成して、これら両金属の接触面を熱
電対のいわゆる測温接点としたものである。The first diaphragm 1 in contact with the high temperature fluid is made of one metal of the thermocouple, and the pressing rod 3 in contact with this metal is made of the other metal of the thermocouple, and the contact surfaces of these two metals are made of the thermocouple. This is a so-called temperature measuring contact.
第１ダイヤフラム１が薄く作られているから、高温流体
の接する受圧面１ａの温度と、その裏面である測温接点
の温度とはほぼ等しいと考えてよく、したがって、熱電
対により高温流体の測温を正確に行うことが可能であ
る。Since the first diaphragm 1 is made thin, it can be considered that the temperature of the pressure receiving surface 1a in contact with the high temperature fluid is almost equal to the temperature of the temperature measuring contact which is the back surface thereof, and therefore, the temperature of the high temperature fluid can be measured by the thermocouple. It is possible to perform the temperature accurately.
図面は本発明の一実施例の要部を示す断面概略説明図で
ある。The drawings are cross-sectional schematic explanatory views showing the main part of one embodiment of the present invention.
図中、１は円形カップ状の第１ダイヤフラムで、受圧面
１ａと側周面１ｂを備え、熱電対を構成する一方の金属
（例えば、アルメル）からなり、必要に応じ表面硬化処
理（例えば、プラズマＣＶＤによるクロム堆積層形成）
が行われる。２は先細り円筒状の保護管で、ステンレス
材からなり、左端小径部２ａには第１ダイヤフラム１の
側面１ｂが溶接(10)により固着され、中径部２ｂの左端
部には図示しない押出成形機の溶融樹脂圧送経路に取付
けるためのネジ部２b-１が形成され、又中径部２ｂの右
端部には大径部２ｃがネジ２c-１により取付けられ、大
径部２ｃ右端部は図示しない端子ボックスに連結されて
いて、ケーブルにより指示計器を備えた本体へ接続され
る。In the figure, reference numeral 1 is a circular cup-shaped first diaphragm, which is provided with a pressure receiving surface 1a and a side peripheral surface 1b and is made of one metal (for example, alumel) that constitutes a thermocouple, and if necessary, a surface hardening treatment (for example, Formation of chromium deposition layer by plasma CVD)
Is done. Reference numeral 2 denotes a tapered cylindrical protection tube made of stainless steel, the side surface 1b of the first diaphragm 1 is fixed to the left end small diameter portion 2a by welding (10), and the left end portion of the middle diameter portion 2b is extruded (not shown). A screw portion 2b-1 for attaching to the molten resin pressure feeding path of the machine is formed, and a large diameter portion 2c is attached to the right end portion of the middle diameter portion 2b by a screw 2c-1, the right end portion of the large diameter portion 2c is shown in the figure. Not connected to the terminal box and connected to the body with the indicating instrument by a cable.
３は円柱形の押圧棒で、熱電対を構成する他方の金属
（例えば、クロメル）からなり、左方端面が第１ダイヤ
フラム１の受圧面１ａの裏面中央位置に接するようにな
っている。４は電気的絶縁材（例えば、セラミック等で
高温に耐え、熱破断、膨張の少いもの）で押圧棒３と後
述の圧力伝達棒５との間に介在している。５はその圧力
伝達棒で、左端面が電気的絶縁材４に当接し、右端面が
後述の第２ダイヤフラム６に当接していて、押圧棒３、
絶縁材４と共に、図示しない保持部材により、保護管２
の中央位置に保持されている。６は第２ダイヤフラム
で、適当な弾性材からなり、左側端面には一対のストレ
インゲージ７，８が設置されている。９は保持リング
で、例えば剛材からなり、引出線１１，１３を通すため
の穴９ａ，９ｂが形成されていて、保護管２の内周面に
固着され、第２ダイヤフラム６を中央位置に保持してい
る。A cylindrical pressing rod 3 is made of the other metal (for example, chromel) that constitutes the thermocouple, and the left end face is in contact with the center position of the back surface of the pressure receiving surface 1a of the first diaphragm 1. Reference numeral 4 denotes an electrically insulating material (for example, a material such as ceramic that can withstand high temperature and has little thermal rupture and expansion), and is interposed between the pressing rod 3 and a pressure transmission rod 5 described later. 5 is a pressure transmission rod of which the left end face is in contact with the electrical insulating material 4 and the right end face is in contact with a second diaphragm 6 which will be described later.
A protective tube 2 is provided by a holding member (not shown) together with the insulating material 4.
Is held in the central position of. A second diaphragm 6 is made of a suitable elastic material and has a pair of strain gauges 7 and 8 on its left end face. Reference numeral 9 is a retaining ring, which is made of a rigid material, for example, has holes 9a and 9b for allowing the lead wires 11 and 13 to pass therethrough, and is fixed to the inner peripheral surface of the protective tube 2 so that the second diaphragm 6 is located at the center position. keeping.
このような構成において、図示しない押出経路に圧送さ
れてくる高温溶融樹脂が、第１ダイヤフラム１の受圧面
１ａに触れると、圧力測定については、受圧面１ａが右
方へ偏位させられ、これと接触している押圧棒３も右方
へ移動し、電気的絶縁材４を介して、圧力伝達棒５も右
方へ移動することになるから、結局第２ダイヤフラム６
が右方へ偏位させられることになり、この偏位が一対の
ストレインゲージ７，８で圧力として変換測定されるこ
とになる。In such a configuration, when the high-temperature molten resin pressure-fed to the extrusion path (not shown) touches the pressure receiving surface 1a of the first diaphragm 1, the pressure receiving surface 1a is displaced to the right for pressure measurement. Since the pressing rod 3 which is in contact with the pressure rod 3 also moves to the right, and the pressure transmission rod 5 also moves to the right via the electrically insulating material 4, eventually the second diaphragm 6
Will be displaced to the right, and this displacement will be converted and measured as pressure by the pair of strain gauges 7 and 8.
一方、温度については、高温樹脂と直接接触しているの
は受圧面１ａであるが、第１ダイヤフラムは薄く作られ
ているから、表面である受圧面１ａとその裏面とは温度
的にほぼ等価と考えてよく、この裏面と押圧棒３との接
触面を、アルメル（第１ダイヤフラム１）とクロメル
（押圧棒３）からなる熱電対の測温接点と考えれば、溶
融樹脂の温度を正確に測定することが可能である。On the other hand, regarding the temperature, it is the pressure receiving surface 1a that is in direct contact with the high temperature resin, but since the first diaphragm is made thin, the pressure receiving surface 1a, which is the front surface, and its back surface are substantially equivalent in temperature. If the contact surface between the back surface and the pressing rod 3 is considered to be a thermocouple temperature-measuring contact consisting of alumel (first diaphragm 1) and chromel (pressing rod 3), the temperature of the molten resin can be accurately measured. It is possible to measure.
ここで、測定回路について述べると、第１ダイヤフラム
１（アルメル）からはこれと同材質（アルメル）の引出
線１１により、又押圧棒３（クロメル）からもこれと同
材質（クロメル）の引出線１３により、それぞれ、穴９
ａ，９ｂを経て図示しない端子箱へ導かれるようになっ
ている。Here, the measurement circuit will be described. From the first diaphragm 1 (alumel), a lead wire 11 of the same material (alumel) is used, and also from the pressing rod 3 (chromel), a lead wire of the same material (chromel). 13 for holes 9
It is adapted to be guided to a terminal box (not shown) via a and 9b.
又、特に図示はしないが、図面における押圧棒３、電気
的絶縁材４、圧力伝達棒５を、一体として全体を押圧棒
とし、熱電対の他方の金属（例えば、クロメル）で製作
し、代りに保持リング９の方をセラミックのような電気
的絶縁材にしても構わない。Although not shown in the drawings, the pressing rod 3, the electrical insulating material 4, and the pressure transmitting rod 5 in the drawing are integrally formed as a pressing rod, and are made of the other metal (for example, chromel) of the thermocouple. In addition, the retaining ring 9 may be made of an electrically insulating material such as ceramic.
高温溶融体に接する受圧面を備えた第１ダイヤフラム
と、その偏位を伝える押圧棒とを、熱電体で構成したか
ら、高温溶融体の圧力と温度とを正確に測定することが
可能であると共に、その構成も簡単な実益を有してい
る。Since the first diaphragm having the pressure receiving surface in contact with the high temperature melt and the pressing rod for transmitting the displacement thereof are composed of the thermoelectric body, it is possible to accurately measure the pressure and temperature of the high temperature melt. At the same time, its structure has a simple practical benefit.
図面は本発明の一実施例の要部を示す、中間を省略して
示した断面説明図である。 １……第１ダイヤフラム、１ａ……受圧面、２……保護
管、３……押圧棒、４……電気的絶縁材、５……圧力伝
達棒、６……第２ダイヤフラム、７，８……ストレイン
ゲージ、９……保持リング、１０……溶接、１１，１３
……引出線。The drawings are cross-sectional explanatory views showing an essential part of an embodiment of the present invention with the middle part omitted. 1 ... First diaphragm, 1a ... Pressure receiving surface, 2 ... Protection tube, 3 ... Pressing rod, 4 ... Electrical insulating material, 5 ... Pressure transmitting rod, 6 ... Second diaphragm, 7,8 …… Strain gauge, 9 …… Holding ring, 10 …… Welding, 11,13
...... Leader.
Claims (1)
ａを有する第１ダイヤフラム１を電熱対の一方の金属で
構成し、かつ前記第１ダイヤフラム１に連繋し、前記受
圧面１ａの偏位を伝える押圧棒３を前記熱電対の他方の
金属で構成して、前記受圧面１ａの偏位により圧力を測
定すると共に、前記第１ダイヤフラム１と前記押圧棒３
とで構成される前記熱電対により温度を測定するように
したことを特徴とする高温流体用の圧力・温度測定セン
サ。1. A pressure receiving surface 1 in contact with a high temperature fluid which is an object to be measured.
The first diaphragm 1 having a is made of one metal of the thermocouple, and the pressing rod 3 connected to the first diaphragm 1 and transmitting the deviation of the pressure receiving surface 1a is made of the other metal of the thermocouple. Then, the pressure is measured by the deviation of the pressure receiving surface 1a, and the first diaphragm 1 and the pressing rod 3 are also measured.
A pressure / temperature measuring sensor for a high temperature fluid, characterized in that the temperature is measured by the thermocouple constituted by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1465388A JPH0610640B2 (en) | 1988-01-27 | 1988-01-27 | Pressure / temperature measurement sensor for high temperature fluids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1465388A JPH0610640B2 (en) | 1988-01-27 | 1988-01-27 | Pressure / temperature measurement sensor for high temperature fluids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01191029A JPH01191029A (en) | 1989-08-01 |
| JPH0610640B2 true JPH0610640B2 (en) | 1994-02-09 |
Family
ID=11867166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1465388A Expired - Lifetime JPH0610640B2 (en) | 1988-01-27 | 1988-01-27 | Pressure / temperature measurement sensor for high temperature fluids |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610640B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000510956A (en) * | 1997-03-21 | 2000-08-22 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Apparatus for detecting pressure and temperature in the intake pipe of an internal combustion engine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH089623Y2 (en) * | 1989-10-12 | 1996-03-21 | 株式会社スギノマシン | Pressure transducer |
| DE19700965C1 (en) * | 1997-01-14 | 1998-06-04 | Grundfos As | Sensor arrangement |
| JP2008151584A (en) * | 2006-12-15 | 2008-07-03 | Tlv Co Ltd | Temperature indicator |
| CN102892532A (en) * | 2010-03-18 | 2013-01-23 | 株式会社迪雷克特21 | Measurement sensor for information regarding inside of mold |
-
1988
- 1988-01-27 JP JP1465388A patent/JPH0610640B2/en not_active Expired - Lifetime
Non-Patent Citations (2)
| Title |
|---|
| 特開昭６３−２８６７３３（ＪＰ，Ａ）） |
| 特開昭６４−８８２２５（ＪＰ，Ａ）） |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000510956A (en) * | 1997-03-21 | 2000-08-22 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Apparatus for detecting pressure and temperature in the intake pipe of an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01191029A (en) | 1989-08-01 |
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