JPS60235022A - Method for measuring vinyl chloride monomer - Google Patents
Method for measuring vinyl chloride monomerInfo
- Publication number
- JPS60235022A JPS60235022A JP9088384A JP9088384A JPS60235022A JP S60235022 A JPS60235022 A JP S60235022A JP 9088384 A JP9088384 A JP 9088384A JP 9088384 A JP9088384 A JP 9088384A JP S60235022 A JPS60235022 A JP S60235022A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- bearing
- chloride monomer
- rotor
- spiral groove
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、塩化ビニルモノマー（以下塩ビモノマーと略
記）の移液における計量方法に関する〔背景技術〕
塩ビモノマーの製造工程等における液化塩ビモノマーの
配管移液において流量の連続計量にオーバル流量計が良
く使用されている。このオーバル流量計は相互にかみ合
った２つの楕円歯車型の回転子の長軸端をケースの内壁
に接しながら液体流通の差圧により回転させ回転子とケ
ース内壁とにはさまれて出来る一定の空間に相当する体
積の液体を回転子の回転と共に送り出す構造による容積
式流量計であり、比較的簡単な構造でありながら精度が
良く、液体の温度、圧力、条件や脈動に対−しても安定
であり圧損も小さし・ため工業的に広（用いられている
。しかしながら、オーバル流量計の回転子軸受部分はケ
ース内において流通する液体自体による自己潤滑及び自
己冷却によっているため液化塩ビモノマーの如く粘度が
約０．２ｃｐ（２０℃）程度では充分な潤滑作用が行わ
れない場合が多い。しかも、塩ビモノマーの沸点は−１
３，８℃と低沸点であり、軸受部分の温度が上昇すると
容易に気化するため液として浸潤することが出来なくな
り軸受部は無潤滑状態となる。このため更に温度が上昇
し軸の熱膨張により軸受とのクリアランスがなくなり回
転不能に到る。かくの如きトラブルは従来から特に口径
３吋以上の大型のオーバル流量計による塩ビモノマーの
計量において屡々発生し問題となっていた。[Detailed Description of the Invention] [Technical Field] The present invention relates to a measuring method for transferring vinyl chloride monomer (hereinafter abbreviated as vinyl chloride monomer) [Background Art] Piping transfer of liquefied vinyl chloride monomer in the manufacturing process of vinyl chloride monomer, etc. Oval flowmeters are often used to continuously measure flow rates. This oval flowmeter consists of two intermeshed elliptical gear-shaped rotors, which are rotated by the differential pressure of liquid flow while touching the inner wall of the case. It is a positive displacement flowmeter with a structure that sends out a volume of liquid equivalent to the space as the rotor rotates.It has a relatively simple structure but has high accuracy, and is resistant to liquid temperature, pressure, conditions, and pulsation. It is widely used industrially because it is stable and has small pressure loss. However, the rotor bearing part of the oval flowmeter is self-lubricated and self-cooled by the liquid itself flowing inside the case, so it is difficult to use liquefied PVC monomer. When the viscosity is about 0.2 cp (20°C), sufficient lubricating action is often not achieved.Moreover, the boiling point of vinyl chloride monomer is -1
It has a low boiling point of 3.8°C and easily vaporizes when the temperature of the bearing increases, making it impossible for it to infiltrate as a liquid, leaving the bearing in a non-lubricated state. As a result, the temperature rises further, and due to thermal expansion of the shaft, there is no clearance with the bearing, resulting in the inability to rotate. Such troubles have often occurred in the past, especially when measuring vinyl chloride monomer using a large oval flow meter with a diameter of 3 inches or more.
本発明者らは、これらの問題につき鋭意検削を行った結
果、本発明を完成したものである。The present inventors have completed the present invention as a result of diligent investigation into these problems.
即ち、本発明は塩化ビニルモノマーの製造工程及びその
他の取扱し・工程等において、液化塩化ビニルモノマー
の移液流量をオーバル流量計により連続的に計量するに
際し、回転子軸受の内面に螺旋溝を設けた構造によるオ
ーバル流量計を用いることを特徴とする塩化ビニルモノ
マーの計量方法である。That is, the present invention provides a method for forming spiral grooves on the inner surface of a rotor bearing when continuously measuring the transfer flow rate of liquefied vinyl chloride monomer using an oval flowmeter in the production process and other handling/processes of vinyl chloride monomer. This is a method for measuring vinyl chloride monomer, which is characterized by using an oval flowmeter having a structure.
軸受に設ける螺旋溝は軸受の口径、材質等を考慮して工
作が容易で有効な形状、及びピッチを実験的に定めれば
良い。The shape and pitch of the spiral groove provided in the bearing can be determined experimentally in consideration of the diameter, material, etc. of the bearing, and the shape and pitch are easy to work and effective.
この螺旋溝により、液化塩ビモノマーは軸受部に充分浸
潤流通し、潤滑作用及び冷却効果共に格段に向上するた
めＸ軸受部の過熱トラブルは完全に解消することが出来
る。Due to this spiral groove, the liquefied vinyl chloride monomer can sufficiently infiltrate and flow into the bearing part, and both the lubricating effect and the cooling effect are significantly improved, so that the overheating problem in the X bearing part can be completely eliminated.
〔発明を実施するための好ましい形態〕以下に本発明を
図により更に詳しく説明する。[Preferred embodiments for carrying out the invention] The present invention will be explained in more detail below with reference to the drawings.
第１図に示す如くブツシュ形の軸受５の内面に螺旋溝７
を設ける。As shown in FIG. 1, there is a spiral groove 7 on the inner surface of the bush-shaped bearing 5.
will be established.
第２図におし・て、螺旋溝７を設けた軸受け５は回転子
６の中心穴に両側面より嵌入し、更にスラストリング４
により押え、これに軸３を通す。この構造におし・て、
液化塩ビモノマーはスラストリング４、と軸３の間から
軸受部に到り回転子６の回転に伴って螺旋溝７により軸
受部に容昇に流通、浸潤し、潤滑及び冷却が充分行われ
る。In FIG. 2, the bearing 5 provided with the spiral groove 7 is fitted into the center hole of the rotor 6 from both sides, and the thrust ring 4 is inserted into the center hole of the rotor 6 from both sides.
Hold it down and pass the shaft 3 through it. With this structure,
The liquefied vinyl chloride monomer reaches the bearing section between the thrust ring 4 and the shaft 3, and as the rotor 6 rotates, the spiral groove 7 causes the liquefied vinyl chloride monomer to gradually flow and infiltrate into the bearing section, thereby providing sufficient lubrication and cooling.
次に実施例により更に説明する。Next, it will be further explained by examples.
実施例
塩ビモノマー製造工程において、液化塩ビモノマ−の移
液ラインにオーバル流量計を設置し、計量を行っている
。EXAMPLE In the vinyl chloride monomer manufacturing process, an oval flow meter was installed in the liquid transfer line for liquefied vinyl chloride monomer to perform metering.
このオーバル流量計は配管径に合わせて口径６１７ｄ最
大流量レンジ２７０ｍ／＋＋ｒのものを使用しているが
６０ ｒｒｅ ／ Ｈｒの連続使用に於て、２日間程度
で軸受部の過熱トラブルが頻発するため同じ流量計を常
に並列設置して使用していた。This oval flowmeter uses a diameter of 617d and a maximum flow range of 270m/++r to match the pipe diameter, but when used continuously at 60 rre/hr, overheating problems at the bearing often occur after about 2 days. The same flowmeters were always installed and used in parallel.
尚、軸は直径４５馴φのステンレス材で軸受はカーボン
材を使用し、クリアランスは９０ｔｚｍで゛ある。The shaft is made of stainless steel with a diameter of about 45 mm, the bearing is made of carbon material, and the clearance is 90 tzm.
このカーボン材の軸受にピッチ１０個のＶ形螺旋溝を設
は使用したところ１８０ ｒｒｒ ／ Ｈｒと従来の３
倍の流量による３ケ月間の連続使用において軸受部過熱
によるトラブルは皆無で極めて順調で精度の良い謂量が
行われた。When a V-shaped spiral groove with a pitch of 10 was installed on this carbon material bearing, the speed was 180 rrr/Hr compared to the conventional 3
During three months of continuous use at twice the flow rate, there were no problems due to overheating of the bearing, and the metering was carried out very smoothly and with high accuracy.
第１図は、本発明による軸受に螺旋溝を設けた１例を示
す、断面図である。
第２図は、第１図の軸受を嵌入した回転子の１例を示ず
Ｚ断面図である。
第３図は、オーバル流量計の回転子関係の主要部の構造
の１例を示す分解斜視図である。（尚、計数部及び計数
部への回転伝達機構は省略し、図示していなし・。）
図面において
１、・・・・・・・・外筒
２、・・・・・・内筒
３、・・・・・・・軸
４ ・ スラスｉ・リング
５ ・・軸受
６、・ 回転子
７・ ・・ 螺旋溝
特許出願人
三井東圧化学株式会社FIG. 1 is a sectional view showing an example of a bearing according to the present invention provided with a spiral groove. FIG. 2 is a Z sectional view, not showing an example of a rotor into which the bearing of FIG. 1 is fitted. FIG. 3 is an exploded perspective view showing an example of the structure of the main parts related to the rotor of the oval flowmeter. (In addition, the counting part and the rotation transmission mechanism to the counting part are omitted and are not shown.) In the drawings, 1, . . . outer cylinder 2, . . . inner cylinder 3,・・・・Shaft 4・・Slus I・Ring 5・・・・Bearing 6・・Rotor 7・・・・Spiral groove patent applicant Mitsui Toatsu Chemical Co., Ltd.
Claims (1)
い工程等において液化塩化ビニルモノマーの移液流量を
オーバル流量計により連続的に計量するに際し、回転子
軸受の内面に螺旋溝を設けた構造によるオーバル流量計
を用いることを特徴とする塩化ビニルモノマーの計量方
法。(1) When continuously measuring the transfer flow rate of liquefied vinyl chloride monomer using an oval flowmeter in the manufacturing process and other handling processes of vinyl chloride monomer, the oval A method for measuring vinyl chloride monomer, characterized by using a flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9088384A JPS60235022A (en) | 1984-05-09 | 1984-05-09 | Method for measuring vinyl chloride monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9088384A JPS60235022A (en) | 1984-05-09 | 1984-05-09 | Method for measuring vinyl chloride monomer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60235022A true JPS60235022A (en) | 1985-11-21 |
| JPH0546484B2 JPH0546484B2 (en) | 1993-07-14 |
Family
ID=14010834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9088384A Granted JPS60235022A (en) | 1984-05-09 | 1984-05-09 | Method for measuring vinyl chloride monomer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60235022A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644488A (en) * | 1979-09-20 | 1981-04-23 | Tokico Ltd | Two-shaft positive displacement rotary machine |
-
1984
- 1984-05-09 JP JP9088384A patent/JPS60235022A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644488A (en) * | 1979-09-20 | 1981-04-23 | Tokico Ltd | Two-shaft positive displacement rotary machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546484B2 (en) | 1993-07-14 |
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