JPS62276280A - Sealing method for pump shaft seal part - Google Patents
Sealing method for pump shaft seal partInfo
- Publication number
- JPS62276280A JPS62276280A JP61120831A JP12083186A JPS62276280A JP S62276280 A JPS62276280 A JP S62276280A JP 61120831 A JP61120831 A JP 61120831A JP 12083186 A JP12083186 A JP 12083186A JP S62276280 A JPS62276280 A JP S62276280A
- Authority
- JP
- Japan
- Prior art keywords
- packing
- gland
- pump
- pump shaft
- leakage
- 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
- 238000000034 method Methods 0.000 title claims description 11
- 238000007789 sealing Methods 0.000 title claims description 9
- 238000012856 packing Methods 0.000 claims abstract description 30
- 210000004907 gland Anatomy 0.000 claims abstract description 17
- 229920000728 polyester Polymers 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 6
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000003118 aryl group Chemical group 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compressor (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明はポンプ軸封部のシール方法の改良に関する。更
に詳しくは漏れが少なく、寿命の長いグランドパツキン
を用いるシール方法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an improvement in a sealing method for a pump shaft seal. More specifically, the present invention relates to a sealing method using a gland packing with little leakage and long life.
化学プラント等には多くのポンプが使用されている。ポ
ンプの軸封装置としては一般的に知られているように、
メカニカルシール、グランドシールがある。メカニカル
シールはフラッシング液が必要であり、液物性や製品品
質の関係でフラッシング液が使用できないポンプにはメ
カニカルシールを使用することは困難であり、通常グラ
ンドシールが使用されている。Many pumps are used in chemical plants and the like. As generally known as a pump shaft sealing device,
There are mechanical seals and ground seals. Mechanical seals require flushing liquid, and it is difficult to use mechanical seals in pumps where flushing liquid cannot be used due to liquid properties or product quality, so gland seals are usually used.
グランドシールに用いられるグランドパツキンにはアス
ベスト、グラファイト、ポリテトラフルオロエチレン、
ガラス繊維、炭素繊維等を組み合わした材料を用い、正
方形、丸形等の断面をもった編組、より、成形体をスタ
フィンボックスに充填して使用している。The gland packing used for gland seals contains asbestos, graphite, polytetrafluoroethylene,
A stuffing box is used with a braided or twisted material made of a combination of glass fiber, carbon fiber, etc. with a square or round cross section, or a molded body.
グランドパツキン方式は、グランド押さえでパツキンを
締めつけ、漏れを押さえる構造であり、漏れを出来る限
り少なくするためには締めつけを強める必要がある。締
めつけを強めるとシャフトとグランドパツキンとの摺動
面での発熱、摩耗が大きくなり、グランドパツキンの寿
命が短くなる。■型パツキンはグランド押さえからの押
しつけ力の他に、液の圧力により更に接触圧力が増加す
るので初めは漏れにくくはなるが、パツキンの寿命が短
く、これまではポンプのような高速回転している個所で
は使用されていない。The gland packing method uses a gland holder to tighten the packing to prevent leakage, and in order to minimize leakage, it is necessary to strengthen the tightening. If the tightening is strengthened, heat generation and wear on the sliding surface between the shaft and gland packing will increase, and the life of the gland packing will be shortened. ■In addition to the pressing force from the gland holder, the contact pressure of the molded gasket is further increased by the pressure of the liquid, so it is difficult to leak at first, but the life of the gasket is short, and until now it has not been possible to use high-speed rotation like a pump. It is not used where it is.
水等がポンプグランドシール部から多量漏れても大きな
問題にはならないが、取り扱う液体によっては損失にな
るだけでなく、大災害へつながる恐れがある。また漏れ
を少なくするために締めつけ過ぎると、発熱、摩耗が大
きくなり寿命を短くしたり、また焼きつきによりポンプ
の停止をきたし、プラントの停止、更には災害を起こす
可能性を有している。特に高粘度あるいは接着性の液体
の場合には、従来のパツキンではシール部からの多量漏
れに至る寿命は約１週間以内であり、漏れが少なく、よ
り寿命の長いパツキンあるいはシール方法の開発が望ま
れていた。このような状況に鑑み、シール方法について
鋭意検討した結果、材質と形状を特定化したグランドパ
ツキンを用いることにより、本発明を完成するに至った
。Even if a large amount of water or the like leaks from the pump gland seal, it will not cause a major problem, but depending on the liquid being handled, it may not only result in a loss but also lead to a major disaster. Furthermore, if the pump is tightened too much in order to reduce leakage, heat generation and wear will increase, shortening the life of the pump, and the pump will stop due to seizing, which may lead to plant shutdown and even disaster. Particularly in the case of highly viscous or adhesive liquids, conventional gaskets have a service life of about one week or less before a large amount of leakage occurs from the seal, and it is desirable to develop gaskets or sealing methods that have a longer lifespan and less leakage. It was rare. In view of this situation, as a result of intensive study on sealing methods, the present invention was completed by using a gland packing with a specified material and shape.
ｃ問題点を解決するための手段〕
本発明は、ポンプのグランドパツキンとして、オキシベ
ンゾイルポリエステル類とテトラフルオロエチレン（以
下ＰＴＦＥと称す）を含有する組成物からなるＶ型成形
パツキンを用いることを特徴とするポンプ軸封部のシー
ル方法に関するものである。Means for Solving Problems c] The present invention is characterized in that a V-shaped molded packing made of a composition containing oxybenzoyl polyesters and tetrafluoroethylene (hereinafter referred to as PTFE) is used as the gland packing of the pump. This invention relates to a method for sealing a pump shaft seal.
本発明に用いられるオキシベンゾイルポリエステル類は
エンジニアリングブラスチノクである芳香族ポリエステ
ルの一種であり、パラオキシ安息香酸の単独重合、およ
びバラオキシ安息香酸、ビフェノール、イソフタール酸
等を共重合することにより得られる。これらのオキシベ
ンゾイルポリエステル類の製造法は特公昭４６−６７９
６、特公昭４７−４７８７０、特開昭５４−４６２８７
等に示されており、またこれらのものはエコノール０（
住友化学工業製）という商品名で市販されている。本発
明で用いられるＰＴＦＥは一般に市販されている粉末が
用いられるが、平均粒径２０μ未満の滑剤縁ＰＴＦＥ粉
末が好ましく、これらはテフロン＠ＴＬＰ−１０（デュ
ポン社製）等の商品名で市販されている０本発明で用い
られるオキシベンゾイルポリエステル類とＰＴＦＥを含
有する組成物はＰＴＦＥ１００部に２０〜３０部のオキ
シベンゾイルポリエステル類を配合したものである。The oxybenzoyl polyesters used in the present invention are a type of aromatic polyesters that are engineering blastinok, and are obtained by homopolymerization of paraoxybenzoic acid and copolymerization of paraoxybenzoic acid, biphenol, isophthalic acid, etc. The manufacturing method of these oxybenzoyl polyesters is disclosed in Japanese Patent Publication No. 46-679.
6, Japanese Patent Publication No. 47-47870, Japanese Patent Publication No. 54-46287
etc., and these are also shown in Econol 0 (
It is commercially available under the trade name (manufactured by Sumitomo Chemical Industries). The PTFE used in the present invention is generally a commercially available powder, but lubricant-edge PTFE powder with an average particle size of less than 20 μm is preferred, and these are commercially available under the trade name Teflon@TLP-10 (manufactured by DuPont). The composition containing oxybenzoyl polyester and PTFE used in the present invention is one in which 100 parts of PTFE is blended with 20 to 30 parts of oxybenzoyl polyester.
更に第３成分として黒鉛を少量添加したものも用いられ
る。これらは一般の圧縮成形法により成形することがで
き、エコノールのＳ（住友化学工業製）の商品名で市販
されている。Furthermore, a material to which a small amount of graphite is added as a third component is also used. These can be molded by a general compression molding method and are commercially available under the trade name of ECONOL S (manufactured by Sumitomo Chemical Industries).
これらの成形体は切削加工ができ、通常の金属切削加工
用機械で容易に加工出来る。これらの成形体を切削して
第１図および第２図に示すような■型パツキンを製作す
る。Ｖ型の角度は内側は６０〜９０゛、外側は９０’程
度に通常作られるが、制限されるものではなく、適宜選
択される。 また摺動面の大きさもスタフィンボックス
の大きさ、組み込む数、液質等を考慮して適宜法められ
る。組み込む数、方向も液質圧力バランス等を考慮して
適宜選択される。第３図にスタフィンボックスに徂み込
んだ一例を示す。図中、２のパツキンリングが本発明の
エコノール＠Ｓ製の■型成形パツキンである。These molded bodies can be easily machined using ordinary metal cutting machines. These molded bodies are cut to produce a ■-shaped packing as shown in FIGS. 1 and 2. The angle of the V-shape is usually made to be about 60 to 90 degrees on the inside and about 90 degrees on the outside, but is not limited to this and can be selected as appropriate. Further, the size of the sliding surface is determined as appropriate, taking into consideration the size of the stuffing box, the number of stuffing boxes to be installed, the quality of the liquid, etc. The number and direction of installation are also appropriately selected in consideration of liquid pressure balance and the like. FIG. 3 shows an example of a stuffing box. In the figure, the packing ring 2 is a ■-shaped packing made by ECONOL@S of the present invention.
実施例１
オキシベンゾイルポリエステル３０部とＰＴＦＥＩＱＯ
部を混合、圧縮成形してなる組成物（エコノール＠３３
００ 住友化学工業！りを切削加工して、第１図およ
び第２図に示すような形状の■型成形パツキンを製作し
た。これを第１表に示す４台のポンプのグランドシール
に用いた。いずれのポンプについても使用開始後６ケ月
経過しても漏れはほとんどなかった。Example 1 30 parts of oxybenzoyl polyester and PTFEIQO
A composition obtained by mixing and compression molding (Econol@33
00 Sumitomo Chemical Industries! By cutting the material, a ■-shaped molded packing having the shape shown in FIGS. 1 and 2 was manufactured. This was used for the gland seals of four pumps shown in Table 1. There was almost no leakage in any of the pumps even after 6 months of use.
量
ト
比較例１
実施例１で用いたＶ型成形パツキンの代わりに市販のグ
ラフオイル成形パツキン（黒鉛製、日本アスベスト社製
）を用いた以外は実施例１と同様に行った。使用開始後
約１週間でいずれも漏れが発生し、パンキンを更新した
。Comparative Example 1 The same procedure as in Example 1 was carried out except that a commercially available graph oil molded packing (made by graphite, manufactured by Nippon Asbestos Co., Ltd.) was used instead of the V-shaped molded packing used in Example 1. Leakage occurred in each case about a week after the start of use, so the pump was replaced.
比較例２
実施例１で用いた■型成形パツキンの代わりに市販のＶ
＃７１３２を２本、Ｖ＃６２３２を３本、Ｖ＃７１３７
を２本（いずれもＰＴＦＥ／アスベスト製、日本パルカ
ー社製）Ｕみ合わせて用いた以外は実施例１と同様に行
った。使用開始後２〜３日でいずれも漏れが発生し、更
新した。Comparative Example 2 Commercially available V was used instead of the ■ molded packing used in Example 1.
2 #7132, 3 V#6232, V#7137
The same procedure as in Example 1 was carried out, except that two pieces (both made of PTFE/asbestos, manufactured by Nippon Palcar Co., Ltd.) were used in combination. Leakage occurred within 2 to 3 days after the start of use, and the product was replaced.
実施例２
実施例１で用いたＶ型成形パツキンをトリプロピレング
リコールとメタフェニレンイソシアネートの混合溶液（
粘土１５０ＣＰ）のポンプ（吸入圧；常圧、吐出圧；
３ ｋｇ／ｃｄＧ、 ４２０ｒｐｍ ）に用いたとこ
ろ、３ケ月後も漏れはほとんど見られなかった。Example 2 The V-shaped molded packing used in Example 1 was treated with a mixed solution of tripropylene glycol and metaphenylene isocyanate (
Clay 150CP) pump (suction pressure: normal pressure, discharge pressure;
3 kg/cdG, 420 rpm), almost no leakage was observed even after 3 months.
本発明によるグランドパツキンは耐摩耗性、自己潤滑性
が高く、自緊効果に優れ、摺動面への圧着も良いため、
このパツキンを用いることにより長く漏れの少ないシー
ル状態を保つことができ、その工業的価値は非常に大き
い。The gland packing according to the present invention has high wear resistance, self-lubricating properties, excellent self-tightening effect, and good pressure bonding to sliding surfaces.
By using this packing, a sealed state with little leakage can be maintained for a long time, and its industrial value is extremely large.
第１図は本発明に係わるパツキンの一実施例の断面図、
第２図は第１図のＩ−［線断面図である。第３図はスタ
フィンボックスに組み込んだ一例を示す断面図である６
図中、ｌは受はリング、２はパツキンリング、３は中間
リング、４は雨中間リング、５は押さえリングある。FIG. 1 is a sectional view of an embodiment of the packing according to the present invention,
FIG. 2 is a cross-sectional view taken along the line I-[ of FIG. 1. Figure 3 is a cross-sectional view showing an example of the structure incorporated into a stuffing box.
In the figure, l is a ring, 2 is a packing ring, 3 is an intermediate ring, 4 is a rain intermediate ring, and 5 is a holding ring.
Claims (1)
リエステル類とテトラフルオロエチレンを含有する組成
物からなるＶ型成形パッキンを用いることを特徴とする
ポンプ軸封部のシール方法。1. A method for sealing a pump shaft sealing portion, characterized in that a V-shaped molded packing made of a composition containing oxybenzoyl polyesters and tetrafluoroethylene is used as a gland packing of the pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61120831A JPS62276280A (en) | 1986-05-26 | 1986-05-26 | Sealing method for pump shaft seal part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61120831A JPS62276280A (en) | 1986-05-26 | 1986-05-26 | Sealing method for pump shaft seal part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62276280A true JPS62276280A (en) | 1987-12-01 |
Family
ID=14796042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61120831A Pending JPS62276280A (en) | 1986-05-26 | 1986-05-26 | Sealing method for pump shaft seal part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62276280A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455440A (en) * | 2013-09-16 | 2015-03-25 | 进典工业股份有限公司 | Tough seal ring used as stuffing box |
| TWI601894B (en) * | 2013-10-18 | 2017-10-11 | 進典工業股份有限公司 | Stuffing box seal ring with toughness |
-
1986
- 1986-05-26 JP JP61120831A patent/JPS62276280A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455440A (en) * | 2013-09-16 | 2015-03-25 | 进典工业股份有限公司 | Tough seal ring used as stuffing box |
| CN104455440B (en) * | 2013-09-16 | 2017-10-20 | 进典工业股份有限公司 | Has the seal ring as stuffing-box of toughness |
| TWI601894B (en) * | 2013-10-18 | 2017-10-11 | 進典工業股份有限公司 | Stuffing box seal ring with toughness |
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