JPS62259049A - Structure of measuring chamber of heat conductivity type gas analyzer - Google Patents
Structure of measuring chamber of heat conductivity type gas analyzerInfo
- Publication number
- JPS62259049A JPS62259049A JP7487086A JP7487086A JPS62259049A JP S62259049 A JPS62259049 A JP S62259049A JP 7487086 A JP7487086 A JP 7487086A JP 7487086 A JP7487086 A JP 7487086A JP S62259049 A JPS62259049 A JP S62259049A
- Authority
- JP
- Japan
- Prior art keywords
- cell wall
- measurement
- wall pipe
- measuring
- pipe
- 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.)
- Pending
Links
- 210000002421 cell wall Anatomy 0.000 claims abstract description 54
- 210000004027 cell Anatomy 0.000 claims abstract description 18
- 238000005192 partition Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 76
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 38
- 238000009792 diffusion process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は測定ガスの熱伝導率の差を測定して測定ガス
の′ａ度を測定する熱伝導率式ガス分析討の測定室の構
造に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention applies to a measuring chamber for thermal conductivity type gas analysis, which measures the temperature difference in the thermal conductivity of the gas to be measured. Regarding structure.
（ロ）従来の技術
従来のこの種の測定室の構造は、第１０図（み〜（Ｃ）
に示すように、流通形、拡散形及び対流置換形の３種か
ある。なお、第１０図（Ｊ〜（Ｃ）において、＜ Ｉａ
） 〜（ｌｃ）は測定セル、（２ａ） （２ｂ）は比
較側熱線素子、〈３ａ）〜（３Ｃ）は測定側熱線素子で
ある。(B) Conventional technology The structure of a conventional measurement chamber of this type is shown in Fig. 10 (see - (C)).
As shown in the figure, there are three types: flow type, diffusion type, and convection displacement type. In addition, in FIG. 10 (J to (C)) <Ia
) to (lc) are measurement cells, (2a) and (2b) are comparison side hot wire elements, and <3a) to (3C) are measurement side hot wire elements.
第１０図（Ｊの流通形は測定ガスの入れ変りは速いが流
量変化の影響を受は易く、第１０図中）の拡散形は流量
変化の影響は受けにくいが、拡散速度の遅いガスでは時
間遅れが非常に大きくなる。これらに対して第１０図＋
Ｃ１の対流置換形は測定ガスが測定側熱線素子（３Ｃ）
によって熱せられて上昇気流となる自然対流現象を測定
ガスの入れ変りに利用するもので、測定ガスの流は変化
の影響を受けにくく、しかも応答速度もかなり速いとい
う利点を有する。The flow type shown in Figure 10 (the flow type shown in J allows for rapid exchange of measurement gas but is easily affected by changes in flow rate; the diffusion type shown in Figure 10) is less affected by changes in flow rate, but gases with a slow diffusion rate The time delay becomes very large. For these, Figure 10 +
In the convection displacement type of C1, the measurement gas is the measurement side hot wire element (3C)
This method utilizes the natural convection phenomenon in which the gas is heated and becomes an upward current to exchange the measured gas, and has the advantage that the flow of the measured gas is not easily affected by changes, and the response speed is also quite fast.
（ハ）発明が解決しようとする問題点
しかし、上記対′ａ置換形は設８１製作が困難であると
いう問題点があった。(c) Problems to be Solved by the Invention However, the above-mentioned pair 'a substitution form has a problem in that it is difficult to fabricate the structure.
この発明は以上の事情に鑑みなされたもので、設計製作
が容易で、測定ガスの流量変化の影響を受けにくく、し
かも応答速度もかなり速い熱伝導率式ガス分析計の測定
室の提供を目的とするものである。This invention was made in view of the above circumstances, and aims to provide a measurement chamber for a thermal conductivity type gas analyzer that is easy to design and manufacture, is not easily affected by changes in the flow rate of the measured gas, and has a fairly fast response speed. That is.
（ニ）問題点を解決するための手段
この発明は熱伝導率式ガス分析計の測定室の構造であっ
て、円筒状でその外周壁の対向する部位に筒軸向きに溝
が形成された金ａ製測定側セル壁パイプと、この測定側
セル壁パイプと同一構成の比較側セル壁パイプと、この
比較側セル壁パイプ及び測定側レル壁パイプ内にそれぞ
れ挿入される長手形状の測定側熱線素子及び比較側熱線
素子と、この測定側熱線素子及び比較側熱線素子の一端
にそれぞれ取付けられこれらの熱線素子を前記両セル壁
バイ１に挿入したときに両セル壁パイプ外に突出するフ
ランジ状の測定側及び比較側素子固定金具と、測定側セ
ル壁パイプの一端側に取り（＝Ｊけられその端部側の開
口をｒ’ｌＪＭする多数の小孔を有する仕切部材と、測
定側セル壁パイプ及び比較側セル壁パイプの開放側の端
部を上向きにしてこれらの両セル壁パイプをそれぞれ係
合収納するための垂直な第１及び第２係合四部を上面に
有し、第１及び第２係合凹部の上部開口はこれらの係合
凹部に係合収納された両セル゛壁パイプにそれぞれ前記
両熱線素子を挿入したときに前記画素子固定金具によっ
て＠Ｉ’ｌＩされるように形成され、さらに内部に第１
係合凹部の底部が開口し第１係合凹部と連通ずるよう水
平方向に延出形成されその両延出端が外部に開口する測
定ガス流路を有する金属製のセルブロックと、このセル
ブロックを係合収納するための収納凹部を上面に有し、
内部に前記測定ガス流路の２つの開口に連通し外部にそ
れぞれ開口する測定ガス供給路及び測定ガス排出路とか
形成された金属製の温度制御ブロックと、この温度制御
ブロックを所定温度に加熱して温度制御ブロックに収納
されたセル１０ツク内の両セル璧パイプ内を恒温に保つ
ための加熱手段とを備えたものである。(d) Means for Solving the Problems This invention has a structure of a measurement chamber of a thermal conductivity type gas analyzer, which is cylindrical and has grooves formed in opposing parts of its outer peripheral wall in the direction of the cylinder axis. A measuring side cell wall pipe made of gold a, a comparison side cell wall pipe having the same configuration as the measuring side cell wall pipe, and a longitudinally shaped measuring side inserted into the comparison side cell wall pipe and the measuring side rail wall pipe, respectively. a hot wire element, a comparison side hot wire element, and a flange that is attached to one end of the measurement side hot wire element and the comparison side hot wire element, and projects outside of both cell wall pipes when these hot wire elements are inserted into the both cell wall pipes 1; A measuring-side and comparison-side element fixing fitting of the shape, a partitioning member having a large number of small holes installed at one end of the measuring-side cell wall pipe (= J cut, and openings on the end side of the measuring-side cell wall pipe r'lJM), and a measuring-side The upper surface has first and second vertical engaging portions for engaging and storing the cell wall pipes and the comparison side cell wall pipes, respectively, with the open end portions facing upward; The upper openings of the first and second engaging recesses are closed by the pixel element fixing fittings when both the hot wire elements are respectively inserted into the cell wall pipes that are engaged and accommodated in these engaging recesses. The first
A cell block made of metal and having a measuring gas flow path formed at an open bottom of an engagement recess and extending in a horizontal direction so as to communicate with a first engagement recess and having both extending ends open to the outside, and this cell block. It has a storage recess on the top surface for engaging and storing the
A metal temperature control block having a measurement gas supply path and a measurement gas discharge path formed therein that communicate with the two openings of the measurement gas flow path and open to the outside, respectively; and a metal temperature control block that is heated to a predetermined temperature. The device is equipped with heating means for keeping the inside of both cell pipes in the cell 10 cell housed in the temperature control block at a constant temperature.
（ホ）作用
この発明は、測定ガス流路を流れる測定ガスを仕切部材
の各小孔から測定側セル壁パイプ内に案内し、この案内
された測定ガスが測定側熱線素子によって加熱され自然
対流現象により上昇し、そして測定側セル壁パイプの上
端で反転して測定側セル壁パイプの両溝を通り測定ガス
流路内に戻るようにしたものである。(E) Function This invention guides the measurement gas flowing through the measurement gas flow path from each small hole of the partition member into the cell wall pipe on the measurement side, and the guided measurement gas is heated by the measurement side hot wire element and causes natural convection. The gas rises due to this phenomenon, turns around at the upper end of the cell wall pipe on the measurement side, and returns into the measurement gas flow path through both grooves of the cell wall pipe on the measurement side.
（へ）実施例
以下第１図から第９図に示す実施例に基づいてこの発明
を詳述する。なお、これによってこの発明は限定される
ものではない。(f) Examples The present invention will be described in detail below based on the examples shown in FIGS. 1 to 9. Note that this invention is not limited by this.
第１図及び第２図はこの発明の一実施例の平面図及び右
側面図、第３図は第１図のＡ−Ａ断面図、第４図は第１
図のＢ−８要部断面図である。1 and 2 are a plan view and a right side view of one embodiment of the present invention, FIG. 3 is a cross-sectional view taken along line A-A in FIG. 1, and FIG.
It is a sectional view of the main part of B-8 in the figure.
この実施例ぐは測定室は、測定側セル壁パイプ（４）、
比較側セル壁パイプ＋５１、測定側熱線素子（６）、比
較側熱＄１素子（７）、測定側素子固定金具（８）、比
較側素子固定金具（９）、仕切部材（財）、セルブロッ
ク（１１１１温度制御ブロック０及び加熱手段０３１か
ら主とじて構成される。In this example, the measurement chamber includes a measurement side cell wall pipe (4),
Comparison side cell wall pipe +51, measurement side hot wire element (6), comparison side heat $1 element (7), measurement side element fixing bracket (8), comparison side element fixing bracket (9), partition member (goods), cell The block (1111) is mainly composed of a temperature control block 0 and a heating means 031.
測定側セル壁パイプ（４）は黄銅製もしくはステンレス
！ｇ製の丸管からなり、その外周壁の対向する部位に筒
軸向きに満（４ａ） （４ａ）が設けられている（第
５図及び第６図参照）。The measurement side cell wall pipe (4) is made of brass or stainless steel! It is made of a round tube made of aluminum, and is provided with grooves (4a) (4a) on opposing parts of its outer circumferential wall in the direction of the cylinder axis (see Figs. 5 and 6).
比較側セル壁パイプ（５）は測定側セル壁パイプ（４）
と同一に構成されている（第３図参照）。（５ａ）は溝
である。The comparison side cell wall pipe (5) is the measurement side cell wall pipe (4)
(See Figure 3). (5a) is a groove.
測定側熱線素子（６）及び比較側熱線素子（７）は、白
金抵抗体にガラスをコーティングした棒状のもので、そ
れぞれ素子部（６ａ） （７ａ）と素子部（６ａ）（
７ａ）の一端に取付けられた太径の柄部（６ｂ）〈７ｂ
）とからなり、素子部（６ｂ） （７ｂ）は測定側セ
ル壁パイプ（４）及び比較側セル壁パイプ（５）内に挿
入ｉＪ能に形成されており、柄部（６ｂ） （７ｂ）
の端部にはリード線（図示しない）がイれぞれ取付けら
れている。The measurement side hot wire element (6) and the comparison side hot wire element (7) are rod-shaped elements made of a platinum resistor coated with glass, and have an element part (6a) (7a) and an element part (6a) (
A large diameter handle (6b) attached to one end of 7a)
), the element part (6b) (7b) is formed to be able to be inserted into the measurement side cell wall pipe (4) and the comparison side cell wall pipe (5), and the handle part (6b) (7b)
Lead wires (not shown) are attached to the ends of each.
測定側素子固定金具（８）及び比較側素子固定金具（９
）は、測定側熱線素子（６）及び比較側熱線素子（７１
の柄部（６ｂ） （７ｂ）にそれぞれ固着された７ラ
ンジ状部材からなり、それらの外径はそれぞれ珂定側セ
ル壁パイプ（４）及び比較側セル壁パイプ（５）の外径
よりも大きく形成されている。Measurement side element fixing bracket (8) and comparison side element fixing bracket (9)
) are the measurement side hot wire element (6) and the comparison side hot wire element (71).
It consists of seven flange-like members fixed to the handle parts (6b) and (7b), respectively, and their outer diameters are larger than the outer diameters of the fixed side cell wall pipe (4) and the comparison side cell wall pipe (5), respectively. Largely formed.
仕切部材（転）は、４つの小孔（１５１が穿設された円
板からなり、測定側セル壁パイプ（４）の一端にその端
部開口を閉塞するように取付けられており、その取（−
Ｉ ＧＪは接着もしくは止つばめによって行なわれる（
第７図及び第８図参照）。なお、仕切部材＠）は上記円
板の他、金網であってもよい。The partition member (roller) consists of a disc with four small holes (151), and is attached to one end of the measurement side cell wall pipe (4) so as to close the end opening. (−
I GJ is performed by gluing or snap-fitting (
(See Figures 7 and 8). In addition to the above-mentioned disk, the partition member @) may be a wire mesh.
セルブロック０Ｄはステンレス鋼、黄銅等からなるブロ
ックからなり、その上面には測定側セル壁パイプ（４）
及び比較側セル壁パイプ（５）の開放側の端部を上向き
にしてこれらのパイプｆ４） （５１をそれぞれ係合挿
入するための第１及び第２係合凹部■０７１が垂直に設
Ｇ）られており、内部には水平向きで第１係合凹部αり
の底部が開口し第１係合凹部郭）と連通ずる測定ガス流
路泗が設置ノられている（第４図参照）。この測定ガス
流路（１８）は途中で曲がり、セルブロック（１１１の
武面２１ｇ所に開口している。なお、第１及び第２係合
凹部（社）面の上部開口は前記両セル壁パイプ（４１＋
５１に熱線素子ｔ６１ （７）をそれぞれ挿入したとき
に、画素子固定金具＋８１ ＋９）によって気密に密閉
され、これらの素子固定金具［８１＋９１は、それぞれ
パツキン（２’ｌｌ ｆｌと素子固定ネジプラグ１２４
１によってセルブロック（１１Ｊに固定されている。The cell block 0D consists of a block made of stainless steel, brass, etc., and the measurement side cell wall pipe (4) is mounted on the top surface of the block.
and comparison side cell wall pipes (5) with their open ends facing upward (f4) (the first and second engaging recesses 071 for engaging and inserting the pipes 51 are vertically provided G) A measuring gas flow path (see FIG. 4) is installed inside the first engaging recess (see FIG. 4), with the bottom of the first engaging recess (alpha) open and communicating with the first engaging recess (see FIG. 4). This measurement gas flow path (18) bends in the middle and opens at the 21g point of the cell block (111).The upper openings of the first and second engaging recess (sha) surfaces are located on both cell walls. Pipe (41+
When the hot wire elements t61 (7) are respectively inserted into the pixel element fixing fittings +81 +9), these element fixing fittings [81+91 are connected to the gaskets (2'll fl and element fixing screw plugs 124).
1 is fixed to the cell block (11J).
温度制御ブロック面は、アルミニウム類のブロックから
なり、セルブロック口υを係合収納するためのセルブロ
ック（ｉｌｌの高さと同一の深さを有する収納凹部固が
形成されており、内部には測定ガス流路部）の２つの開
口に連通し外部にそれぞれ開口する測定ガス供給路０及
び測定ガス排出路■が形成されている。The temperature control block surface is made of an aluminum block, and has a storage recess with the same depth as the height of the cell block (ill) for engaging and storing the cell block opening υ. A measurement gas supply path 0 and a measurement gas discharge path (2) are formed which communicate with two openings of the gas flow path section and open to the outside, respectively.
加熱手段０３）は、温度制御ブロック面の側面に設けら
れた孔（ハ）に挿入されるヒータからなり、温度制御ブ
ロックａ７Ｊを５０〜６０°程度に加熱して、温度制御
ブロックωに収納されたセルブロック（１１）内の両セ
ル壁パイプ（４１（５１内を恒温に保つためのものであ
る（第２図参照）。The heating means 03) consists of a heater inserted into a hole (c) provided on the side surface of the temperature control block surface, and heats the temperature control block a7J to about 50 to 60 degrees and is housed in the temperature control block ω. Both cell wall pipes (41 (51) inside the cell block (11) are kept at a constant temperature (see Figure 2).
なお、第２図において３７）は温度センサ、刈は温度フ
ユーズである。また、第１図において弼は熱線素子のリ
ード線の中継ターミナルである。In FIG. 2, 37) is a temperature sensor, and 37) is a temperature fuse. Further, in FIG. 1, ``b'' is a relay terminal for the lead wire of the hot wire element.
次に上記構造における測定ガスの流れについて説明する
。Next, the flow of the measurement gas in the above structure will be explained.
まず、測定ガス供給路Ｓから測定ガスを測定ガス流路（
財）に流すと、第９図に示すように測定ガス（Ｇ）は仕
切部材□□□の小孔（１５１から測定側セル壁パイプ（
４）内に流入する。この流入した測定ガス（Ｇ）は測定
側熱線素子（６）によって加熱され自然対流現象で上昇
し、測定側セル壁パイプ（４）の上端で反転してそのパ
イプ（４）の２つのｖ４（１４１（１４１内に入り下向
きに流れ再び測定ガス流路Ｓ内に戻る。First, the measurement gas is supplied from the measurement gas supply path S to the measurement gas flow path (
As shown in Figure 9, the measurement gas (G) flows from the small hole (151) of the partition member □□□ to the measurement side cell wall pipe (
4) Flow into the interior. This inflowing measurement gas (G) is heated by the measurement-side hot wire element (6) and rises due to natural convection phenomenon, and is reversed at the upper end of the measurement-side cell wall pipe (4) and the two v4 ( 141 (enters into 141, flows downward and returns to measurement gas flow path S again.
このように測定室を構成することによっＣ以下の効果を
得ることができる。By configuring the measurement chamber in this way, effects below C can be obtained.
くＪ 構造が複雑でないため、比較的容易に測定室を製
作することができる。Since the structure is not complicated, the measurement chamber can be manufactured relatively easily.
＋ｂ＋ 測定側セル壁パイプ（４）を測定条件に適し
た大きさの筒孔を右するセル壁パイプに交換できるため
、また測定側熱線素子（６）を測定条件に適した寸法の
熱線素子に交換できるため、測定感度を向上させること
ができる。+b+ The cell wall pipe on the measurement side (4) can be replaced with the cell wall pipe on the right with a cylindrical hole of a size suitable for the measurement conditions, and the hot wire element on the measurement side (6) can be replaced with a hot wire element of a size suitable for the measurement conditions. Since it can be replaced, measurement sensitivity can be improved.
ｆｃｌ 対流置換形であるため、測定ガスの入れかわ
りが速い。fcl Since it is a convection displacement type, the measurement gas can be replaced quickly.
（ｄ） 仕切部Ｕ （ｌｏ＋を用いているため、測定
ガスの流量変化の影響を少なくすることができる。(d) Partition U (Since lo+ is used, the influence of changes in the flow rate of the measurement gas can be reduced.
（ｅ＋ ’４７４度制御ブロック面を備えているため
、外気温度の変化の影響を小さくすることができる。(e+' Since it is equipped with a 474-degree control block surface, the influence of changes in outside temperature can be reduced.
＋ｆ＋ 構造の各部が着１１５２句能に構成されてい
るため、各部の分解掃除が容易となる。+f+ Since each part of the structure is arranged in a 1152-piece structure, it is easy to disassemble and clean each part.
（ト）発明の効果 この発明は以下の効果を秦する。(g) Effects of the invention This invention provides the following effects.
＋ａ） 比較的容易に測定室を製作することができる
。+a) The measurement chamber can be manufactured relatively easily.
山） 測定感度を向上させることができる。Mt.) Measurement sensitivity can be improved.
（ｅ） 測定ガスの入れかわりが速い。(e) The measurement gas is replaced quickly.
（小 測定ガスの流ｍ変化の影響を少なくすることがで
きる。(Small) The influence of changes in the flow rate of the measurement gas can be reduced.
（ｅ） 外気温度の変化の影響を小さくすることがで
きる。(e) The influence of changes in outside temperature can be reduced.
＋ｆ＋ 各部の分解掃除が容易となる。+f+ It becomes easier to disassemble and clean each part.
第１図及び第２図はこの発明の一実施例を示す平面図及
び右側面図、第３図は第１図のＡ−Ａ断面図、第４図は
温度制御ブロックを除いた第１図の［３−Ｂ断面図、第
５図この発明に用いられる測定側セル壁パイプの平面図
、第６図は第５図のＣ−Ｃ断面図、第７図のこの発明に
用いられるイ１切部材を測定側セル壁パイプに取４１け
た状態を示す平面図、第８図は第７図のＤ−Ｃ断面図、
第９図はこの発明における測定ガスの流れを説明する説
明斜視図、第１０図は３つの従来例の構成説明図である
。
（４）・・・・・・測定側セル壁パイプ、（５）・・・
・・・比較側セル壁パイプ、（４ａ） （５ａ）・・
・・・・溝、 （６）・・・・・・測定側熱線素子、
（７）・・・・・・比較側熱線素子、
（８）・・・・・・測定側素子固定金具、（９）・・・
・・・比較側素子固定金具、００１・・・・・・イ１切
部材、 （１１）・・・・・・セルブロック、［
Ｆ］・・・・・・温度制御ブロック、０３１・・・・・
・加熱手段、６）・・・・・・仕ＦＪＪ部材の小孔、
■・・・・・・第１係合四部、肋・・・・・・第２係合
凹部、 （財）・・・・・・測定流路、Ｕ・・・・・
・測定ガス供給路、 ■・・・・・・測定ガス排出路、
固・・・・・・温度制御ブロックの収納凹部。
第１図
７ｔ）７（ｌｊ Ｚｅ）ＩＪ
第 ５ 図 ｆＪ！７ｒｊ：Ｊ第６
図 第８図
第１０閏
（ａ） （ｂ）
第 ９ｉ！１1 and 2 are a plan view and a right side view showing one embodiment of the present invention, FIG. 3 is a sectional view taken along line A-A in FIG. 1, and FIG. 4 is a diagram of the first embodiment excluding the temperature control block. Fig. 5 is a plan view of the measurement side cell wall pipe used in this invention, Fig. 6 is a sectional view taken along C-C in Fig. 5, and Fig. 7 is a sectional view taken along line C-C in Fig. 7. A plan view showing a state in which the cutting member is attached to the measurement side cell wall pipe, FIG. 8 is a sectional view taken along line D-C in FIG. 7,
FIG. 9 is an explanatory perspective view illustrating the flow of measurement gas in the present invention, and FIG. 10 is an explanatory diagram of the configuration of three conventional examples. (4)...Measurement side cell wall pipe, (5)...
...Comparison side cell wall pipe, (4a) (5a)...
...Groove, (6) ...Measurement side hot wire element,
(7)...Comparison side hot wire element, (8)...Measurement side element fixing fitting, (9)...
... Comparison side element fixing bracket, 001 ... A1 cutting member, (11) ... Cell block, [
F]...Temperature control block, 031...
・Heating means, 6)...Small hole of the finishing FJJ member,
■・・・First engaging four parts, ribs・・・Second engaging recess, (Incorporated Foundation)・・・Measurement channel, U...
・Measurement gas supply path, ■...Measurement gas discharge path,
Hard: Storage recess for temperature control block. Fig. 1 7t) 7(lj Ze) IJ Fig. 5 fJ! 7rj: J 6th
Figure 8 Figure 10 Leap (a) (b) 9i! 1
Claims (1)
が形成された金属製測定側セル壁パイプと、この測定側
セル壁パイプと同一構成の比較側セル壁パイプと、この
比較側セル壁パイプ及び測定側セル壁パイプ内にそれぞ
れ挿入される長手形状の測定側熱線素子及び比較側熱線
素子と、この測定側熱線素子及び比較側熱線素子の一端
にそれぞれ取付けられこれらの熱線素子を前記両セル壁
パイプに挿入したときに両セル壁パイプ外に突出するフ
ランジ状の測定側及び比較側素子固定金具と、測定側セ
ル壁パイプの一端側に取り付けられその端部側の開口を
閉塞する多数の小孔を有する仕切部材と、測定側セル壁
パイプ及び比較側セル壁パイプの開放側の端部を上向き
にしてこれらの両セル壁パイプをそれぞれ係合収納する
ための垂直な第１及び第２係合凹部を上面に有し、第１
及び第２係合凹部の上部開口はこれらの係合凹部に係合
収納された両セル壁パイプにそれぞれ前記両熱線素子を
挿入したときに前記両素子固定金具によって密閉される
ように形成され、さらに内部に第１係合凹部の底部が開
口し第１係合凹部と連通するよう水平方向に延出形成さ
れその両延出端が外部に開口する測定ガス流路を有する
金属製のセルブロックと、このセルブロックを係合収納
するための収納凹部を上面に有し、内部に前記測定ガス
流路の２つの開口に連通し外部にそれぞれ開口する測定
ガス供給路及び測定ガス排出路とが形成された金属製の
温度制御ブロックと、この温度制御ブロックを所定温度
に加熱して温度制御ブロックに収納されたセルブロック
内の両セル壁パイプ内を恒温に保つための加熱手段とを
備えてなる熱伝導率式ガス分析計の測定室の構造。1. Comparison of a metal measurement side cell wall pipe that is cylindrical and has grooves formed in the direction of the cylinder axis on opposing parts of its outer peripheral wall, and a comparison side cell wall pipe that has the same configuration as this measurement side cell wall pipe. A measuring side hot wire element and a comparison side hot wire element each having a longitudinal shape inserted into the side cell wall pipe and the measurement side cell wall pipe, respectively, and these hot wire elements each being attached to one end of the measuring side hot wire element and the comparison side hot wire element. A flange-shaped measurement side and comparison side element fixing fitting that protrudes outside both cell wall pipes when the cell wall pipe is inserted into both cell wall pipes, and an opening on the end side that is attached to one end side of the measurement side cell wall pipe. A partition member having a large number of small holes to be closed, and a vertical pipe for engaging and housing the cell wall pipes on the measurement side and the cell wall pipe on the comparison side with their open ends facing upward. 1 and 2 engagement recesses on the top surface;
and the upper openings of the second engagement recesses are formed so as to be sealed by the element fixing fittings when both the hot wire elements are respectively inserted into the cell wall pipes that are engaged and housed in these engagement recesses; Furthermore, the metal cell block has a measurement gas flow path formed in the interior where the bottom of the first engagement recess is open, extends horizontally so as to communicate with the first engagement recess, and has both extending ends open to the outside. and a storage recessed portion for engaging and storing the cell block on the upper surface, and a measurement gas supply path and a measurement gas discharge path that communicate with the two openings of the measurement gas flow path and open to the outside, respectively. A temperature control block made of metal and a heating means for heating the temperature control block to a predetermined temperature to maintain a constant temperature inside both cell wall pipes in the cell block housed in the temperature control block. The structure of the measurement chamber of a thermal conductivity type gas analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7487086A JPS62259049A (en) | 1986-03-31 | 1986-03-31 | Structure of measuring chamber of heat conductivity type gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7487086A JPS62259049A (en) | 1986-03-31 | 1986-03-31 | Structure of measuring chamber of heat conductivity type gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62259049A true JPS62259049A (en) | 1987-11-11 |
Family
ID=13559795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7487086A Pending JPS62259049A (en) | 1986-03-31 | 1986-03-31 | Structure of measuring chamber of heat conductivity type gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62259049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016042054A (en) * | 2014-08-18 | 2016-03-31 | 富士電機株式会社 | Thermal conductivity gas analyzer |
-
1986
- 1986-03-31 JP JP7487086A patent/JPS62259049A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016042054A (en) * | 2014-08-18 | 2016-03-31 | 富士電機株式会社 | Thermal conductivity gas analyzer |
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