JP3772099B2 - Gas compressor distance piece shaft seal device - Google Patents

Gas compressor distance piece shaft seal device Download PDF

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Publication number
JP3772099B2
JP3772099B2 JP2001148246A JP2001148246A JP3772099B2 JP 3772099 B2 JP3772099 B2 JP 3772099B2 JP 2001148246 A JP2001148246 A JP 2001148246A JP 2001148246 A JP2001148246 A JP 2001148246A JP 3772099 B2 JP3772099 B2 JP 3772099B2
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Prior art keywords
box
distance piece
inner box
cylinder
fitted
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JP2001148246A
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JP2002339866A (en
Inventor
元祥 林
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三国重工業株式会社
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  • Sealing With Elastic Sealing Lips (AREA)
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Description

【0001】
【発明の属する技術分野】
本発明は、一酸化炭素等の毒性ガス、水素等の可燃性・爆発性ガス又は、ヘリウム等の高価なガスを圧縮する往復運動型ガス圧縮機の僅かなガス漏洩を防止するため、シリンダとクランクケースとの間に設けるジスタンスピースの軸封装置に関する。
【0002】
【従来の技術】
従来、この種のガス圧縮機は、シリンダとクランクケースとの間に、ジスタンスピースを設け、シリンダとジスタンスピースとの間の隔壁にピストン棒の軸封装置を設けると共に、ジスタンスピースとクランクケースの隔壁に、更にピストン棒の軸封装置いわゆるジスタンスピース軸封装置を設け、2段構えで被圧縮ガスのクランクケースへの漏洩を防止するようにしていた。その一例として 、実開昭48−1102号公報(実公昭52−005287号公報)の図2及び図3に示すように、ジスタンスピース軸封装置6に上箱6c’と下箱6c”とからなる外箱6cの上箱6c’に内嵌するパッキン箱(内箱)6dを設け、パッキン箱(内箱)6dにV字形パッキンリング6eとそのアダプタ6fとを設けると共に、パッキン箱(内箱)6dに内接するコイル状圧縮バネ6gを設け、アダプタ6fを介してV字形パッキンリング6eを押圧し、V字形パッキンリング6eがピストン棒5及びパッキン箱(内箱)6dに密接できるようにしていたが、このジスタンスピース軸封装置6は、ガス圧縮機を高速運転すると、V字形パッキングリング6eのリップの摩擦力で、パッキン箱(内箱)6dがピストン棒の上下動に従動して軸方向の振動を生じ、パッキン箱(内箱)6d下面のシールリング6iが僅かに浮き上がり、パッキン箱(内箱)6d下面と下箱6c”との間から油類の漏洩に続いて被圧縮ガスの僅かな漏洩を生ずる場合があった。
また、ピストン棒5の僅かな芯振れ(軸と直角方向の振動)に対しパッキン箱(内箱)6dの追従が遅れ、油類や被圧縮ガスの僅かな漏洩を発生する場合があった。
そこで発明者は、外箱の上箱に内接しパッキン箱(内箱)上面を押圧できるようにもう1本の新しいコイル状圧縮バネを設け、また、新しく設定したコイル状圧縮バネとパッキン箱(内箱)上面との間に摺動特性のよいスラスト板を設けると共に、パッキン箱(内箱)下面にバネ内蔵のヒツプシールを設け、ピストン棒の芯振れ(軸と直角方向の振動)に伴うパッキン箱(内箱)の横移動を極めて円滑にできるようにすると共に、ピストン棒の上下動に伴う軸方向の振動によるパッキン箱(内箱)の浮き上りによる油類及び被圧縮ガスの僅かな漏れを完全に防止することに成功した。
【0003】
【発明が解決しようとする課題】
本発明は、ピストン棒の上下動に従動した軸方向の振動による内箱の浮き上りによる油類及び被圧縮ガスの僅かな漏洩を完全に防止できるようにしたガス圧縮機のジスタンスピース軸封装置を提供するものである。
また、ピストン棒の芯振れに内箱が追従して円滑に横移動できるようにして、油類及び被圧縮ガスの僅かな漏洩を完全に防止できるようにしたガス圧縮機のジスタンスピース軸封装置を提供するものである。
【0004】
【課題を解決するための手段】
本発明のガス圧縮機のジスタンスピース軸封装置は、上記課題を達成するため、図示するように、シリンダ10とクランクケース20との間にシリンダ10に連設してジスタンスピース30を設け、シリンダ10側の隔壁31にシリンダー軸封装置40を設けると共に、ジスタンスピース30のクランクケース20側の隔壁32にジスタンスピース軸封装置50を設け、該ジスタンスピース軸封装置50は、上箱511と下箱512からなる外箱51と、上箱511に内嵌された内箱53と、内箱53とピストン棒60との間に内嵌されるアダプタ54とその上を押圧するコイル状圧縮バネ56と、アダプタ54に押圧されるV字形パッキンリング55とを備えると共に、上箱511の内壁上面に円周溝517を設けて、上端が、係止され、全体が上箱511の内壁に内接され、下端が、摺動特性のよいスラスト板571とスラスト板押え板572を介して、内箱53上面を押圧したコイル状圧縮バネ57を設けると共に、内箱53下面の円周溝5331に嵌入した、バネを内蔵するヒツプシール533を介して、内箱53下面と下箱512上面とを密着してなり、油類及び被圧縮ガスの僅かな洩れを防止できるようにしたものである。
【0005】
【発明の実施の形態1】
本発明の実施の形態1が図1及び図2に示されている。
本発明実施例のガス圧縮機は、シリンダ10とクランクケース20の間に設けたジスタンスピース30のシリンダ10側の隔壁31にシリンダ軸封装置40を設け、これから漏れた被圧縮ガスがクランクケース20へ漏れるのを防ぐため、ジスタンスピース30のクランクケース20側の隔壁32にジスタンスピース軸封装置50を設けている。
ジスタンスピース軸封装置は、外箱51と内箱53とからなる。
図2に示すように、外箱51は、上箱511と下箱512からなり、上箱511は、ジスタンスピース30のクランクケース20側の隔壁32下面に装着し、上部にピストン棒60の貫通穴515と、その上にピストン棒60に密嵌するオイルシール513を設けると共に、下箱512は、ピストン棒60の貫通穴516と、その下方にピストン棒60に密嵌するオイルシール514を設けている。
内箱53は、下部にピストン棒60の貫通穴534を設けている。
また、内箱53は、ピストン棒60と内箱53との間に内嵌されるアダプタ54と、内箱53に内接してアダプタ54を介してV字形パッキンリング55を押圧できるようにしたコイル状圧縮バネ56とを内嵌する。
被圧縮ガス漏洩防止のため、外箱51及び内箱53の間に油類が充満される。 また、コイル状圧縮バネ56の下面とアダプタ54との間に、平板状の弗素樹脂製スラスト板561及び平板状の金属板製スラスト押え板562を介在している。
なお、板状リング531、532は、内箱53及びアダプタ54とピストン棒60との接触を避けると共に密嵌するための自己潤滑性の弗素樹脂製リングである。
さらに、上箱511の内側に内接し、内箱53を押圧できるようにしたコイル状圧縮バネ57を設けている。
コイル状圧縮バネ57は、上端を上箱511の内側上面に設けた円周溝517に嵌入して係止され、下端を摺動特性のよい平板状の自己潤滑性弗素樹脂製スラスト板571及び平板状の金属板製スラスト押え板572を介して内箱53上面に押圧できるように敷設されている。また、内箱53下面には円周溝5331が設けられて、バネを内蔵したヒツプ シール533が嵌入され、内箱53下面と下箱512上面ととはヒツプシール533を介して密着している。
内箱53の下面の円周溝5331に嵌入したヒツプシール533は、図4に示すように、内面にコ字形板バネ534Aを内嵌し、上面と下面にリップ状接触縁533Aを有するもの、図5に示すように、内面にコイル状の円形バネ534Bを内嵌し、上面と下面にシール片533Bを有するものが使用される。
従って、ジスタンスピース軸封装置50において、ピストン棒60の上下動に従って内箱53が軸方向に振動し、内箱53が下箱512に対し浮き上っても、内箱53の下面の円周溝5331に嵌入しているヒツプシール533の内蔵するバネによって密着でき、僅かな油洩れや被圧縮性ガスの洩れを完全に防止することができる。
また、ピストン棒60の芯振れが発生したとしても、コイル状圧縮バネ57は上端が係止され、また全体が上箱511の内側側壁に密接に内接し、下端は、内箱53上面との間の摺動特性のよいスラスト板571とスラスト押え板572を介して内箱53を押圧しているので、内箱53が僅かに横移動してもコイル状圧縮バネ57は安定して固定を維持したまま、内箱53を押圧することができ、油及び被圧縮ガスの僅かな漏洩でも防止される。
【0006】
【発明の効果】
本発明によれば、ガス圧縮機のジスタンスピース軸封装置50の内箱53に従来のコイル状圧縮バネ56に加えて新たにコイル状圧縮バネ57を設けることにより、運転時に、ピストン棒の上下動に従って内箱が軸方向に振動しても油類や被圧縮ガスの僅かな漏れも完全に防止することができる。さらに、ピストン棒の芯振れがあっても、内箱53が円滑に横移動でき、油類や被圧縮ガスの僅かな漏洩も完全に防止できることになった。
【図面の簡単な説明】
【図1】 本発明の全体概略説明図である。
【図2】 本発明の実施の形態を示すジスタンスピース軸封装置の拡大断面図である。
【図3】 図3で使用したシールパッキンの一例を示す断面拡大斜視図である。
【図4】 図3で使用したシールパッキンのさらに別の例を示す断面拡大斜視図である。
【符号の説明】
10 シリンダ
20 クランクケース
30 ジスタンスピース
31 ジスタンスピースのシリンダ側の隔壁
32 ジスタンスピースのクランクケース側の隔壁
40 シリンダ軸封装置
50 ジスタンスピース軸封装置
51 外箱
511 上箱
512 下箱
517 凹部
53 内箱
54 アダプタ
55 V字形パッキンリング
56、57 コイル状圧縮バネ
533、533A、533B ヒツプシール
60 ピストン棒
[0001]
BACKGROUND OF THE INVENTION
In order to prevent slight gas leakage of a reciprocating gas compressor that compresses a toxic gas such as carbon monoxide, a flammable or explosive gas such as hydrogen, or an expensive gas such as helium, The present invention relates to a shaft seal device for a distance piece provided between the crankcase and the crankcase.
[0002]
[Prior art]
Conventionally, this type of gas compressor is provided with a distance piece between the cylinder and the crankcase, and a piston rod shaft sealing device is provided in a partition wall between the cylinder and the distance piece, and the distance piece A piston rod shaft sealing device, a so-called distance piece shaft sealing device, is further provided on the partition wall of the crankcase to prevent leakage of the compressed gas into the crankcase in two stages . As an example, as shown in FIGS. 2 and 3 of Japanese Utility Model Publication No. 48-1102 ( Japanese Utility Model Publication No. 52-005287 ) , an upper box 6c 'and a lower box 6c " A packing box (inner box) 6d fitted in an upper box 6c 'of the outer box 6c is provided. A V-shaped packing ring 6e and its adapter 6f are provided in the packing box (inner box) 6d. Box) A coil-shaped compression spring 6g inscribed in 6d is provided, and the V-shaped packing ring 6e is pressed through the adapter 6f so that the V-shaped packing ring 6e can be in close contact with the piston rod 5 and the packing box (inner box) 6d. and had, the di stance piece shaft sealing device 6, when high-speed operation of the gas compressor, the frictional force of the lip of the V-shaped packing rings 6e, stuffing box (inner box) 6d of the piston rod 5 moves up and down Cause vibration in the axial direction following the packing box (inner box) 6d lower surface of the seal ring 6i is lifted slightly, following the leakage of oils from between the stuffing box (inner box) 6d lower surface and the lower box 6c " As a result, a slight leakage of the compressed gas may occur.
Further, the follow-up of the packing box (inner box) 6d is delayed with respect to the slight center wobbling (vibration in the direction perpendicular to the shaft) of the piston rod 5, and there is a case where slight leakage of oils or compressed gas occurs.
Therefore, the inventor provided another new coiled compression spring so as to be inscribed in the upper box of the outer box and press the upper surface of the packing box (inner box), and the newly set coiled compression spring and packing box ( A thrust plate with good sliding characteristics is provided between the upper surface of the inner box and a seal with a built-in spring on the lower surface of the packing box (inner box). The lateral movement of the box (inner box) is made extremely smooth, and slight leakage of oils and compressed gas due to lifting of the packing box (inner box) due to axial vibration caused by the vertical movement of the piston rod Was successfully prevented.
[0003]
[Problems to be solved by the invention]
The present invention is a gas compressor distance piece shaft seal capable of completely preventing slight leakage of oils and compressed gas due to floating of the inner box due to axial vibration driven by the vertical movement of the piston rod. A device is provided.
In addition, the inner casing of the piston rod follows the runout of the piston rod and can smoothly move laterally, so that slight leakage of oils and compressed gas can be completely prevented. A device is provided.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the distance piece shaft seal device for a gas compressor according to the present invention is provided with a distance piece 30 connected to the cylinder 10 between the cylinder 10 and the crankcase 20 as shown in the figure. The cylinder shaft sealing device 40 is provided on the partition wall 31 on the cylinder 10 side, and the distance piece shaft sealing device 50 is provided on the partition wall 32 on the crankcase 20 side of the distance piece 30, The outer box 51 including the upper box 511 and the lower box 512, the inner box 53 fitted in the upper box 511, the adapter 54 fitted between the inner box 53 and the piston rod 60, and the upper side thereof are pressed. coiled compression spring 56, together with and a V-shaped packing ring 55 which is pressed into the adapter 54, with a circumferential groove 517 provided on the inner wall upper surface of the upper box 511, upper end, is engaged, The body is inscribed in the inner wall of the upper box 511, and the lower end is provided with a coiled compression spring 57 that presses the upper surface of the inner box 53 through a thrust plate 571 and a thrust plate presser plate 572 with good sliding characteristics. The lower surface of the inner box 53 and the upper surface of the lower box 512 are brought into close contact with each other through a hip seal 533 fitted in a circumferential groove 5331 on the lower surface of the box 53 and containing a spring, thereby preventing slight leakage of oils and compressed gas. It is something that can be done.
[0005]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1
Embodiment 1 of the present invention is shown in FIGS.
In the gas compressor according to the embodiment of the present invention, the cylinder shaft sealing device 40 is provided in the partition wall 31 on the cylinder 10 side of the distance piece 30 provided between the cylinder 10 and the crankcase 20, and the compressed gas leaked from this is compressed into the crankcase. In order to prevent leakage to the distance 20, a distance piece shaft sealing device 50 is provided in the partition wall 32 on the crankcase 20 side of the distance piece 30.
The distance piece shaft seal device includes an outer box 51 and an inner box 53.
As shown in FIG. 2, the outer box 51 includes an upper box 511 and a lower box 512. The upper box 511 is mounted on the lower surface of the partition wall 32 on the crankcase 20 side of the distance piece 30, and the piston rod 60 is mounted on the upper part. A through hole 515 and an oil seal 513 that is tightly fitted to the piston rod 60 are provided thereon, and the lower box 512 is provided with a through hole 516 of the piston rod 60 and an oil seal 514 that is tightly fitted to the piston rod 60 below the through hole 516. Provided.
The inner box 53 is provided with a through hole 534 of the piston rod 60 in the lower part.
The inner box 53 includes an adapter 54 fitted between the piston rod 60 and the inner box 53, and a coil that is inscribed in the inner box 53 and can press the V-shaped packing ring 55 via the adapter 54. A cylindrical compression spring 56 is fitted inside.
Oil is filled between the outer box 51 and the inner box 53 to prevent leakage of compressed gas. Further, a flat fluorine resin thrust plate 561 and a flat metal plate thrust retainer plate 562 are interposed between the lower surface of the coiled compression spring 56 and the adapter 54.
The plate-like rings 531 and 532 are self-lubricating fluorine resin rings for avoiding contact between the inner box 53 and the adapter 54 and the piston rod 60 and closely fitting.
Further, a coiled compression spring 57 is provided which is inscribed inside the upper box 511 so that the inner box 53 can be pressed .
The coiled compression spring 57 is fitted and locked with a circumferential groove 517 provided at the upper end on the inner upper surface of the upper box 511, and the lower end is a flat self-lubricating fluororesin thrust plate 571 with good sliding characteristics. A flat metal plate thrust holding plate 572 is laid on the upper surface of the inner box 53 so as to be pressed. Furthermore, the inner box 53 lower surface circumferential groove 5331 is provided, Hitsupu seal 533 with a built-in spring is fitted, and the inner box 53 the lower surface and the lower box 512 upper surface is in close contact via the Hitsupushiru 533.
As shown in FIG. 4, the hip seal 533 fitted in the circumferential groove 5331 on the lower surface of the inner box 53 has a U-shaped leaf spring 534A on the inner surface and lip-shaped contact edges 533A on the upper and lower surfaces. As shown in FIG. 5, a coil-shaped circular spring 534B is internally fitted on the inner surface and seal pieces 533B are provided on the upper and lower surfaces.
Therefore, in the distance piece shaft sealing device 50, even if the inner box 53 vibrates in the axial direction as the piston rod 60 moves up and down, and the inner box 53 floats with respect to the lower box 512, the circle on the lower surface of the inner box 53 A spring built in the hip seal 533 fitted in the circumferential groove 5331 can be brought into close contact with each other, so that slight oil leakage and leakage of compressible gas can be completely prevented.
Even if the core deflection of the piston rod 60 occurs, the upper end of the coiled compression spring 57 is locked, and the whole is closely inscribed in the inner side wall of the upper box 511, and the lower end is in contact with the upper surface of the inner box 53. Since the inner box 53 is pressed via the thrust plate 571 and the thrust holding plate 572 having good sliding characteristics, the coiled compression spring 57 is stably fixed even if the inner box 53 moves slightly laterally. The inner box 53 can be pressed while being maintained, and even a slight leakage of oil and compressed gas is prevented.
[0006]
【The invention's effect】
According to the present invention, a new coiled compression spring 57 is provided in addition to the conventional coiled compression spring 56 in the inner box 53 of the distance piece shaft sealing device 50 of the gas compressor, so that the piston rod of the piston rod can be operated during operation. Even if the inner box vibrates in the axial direction according to the vertical movement, slight leakage of oils and compressed gas can be completely prevented. Furthermore, even if the piston rod has runout, the inner box 53 can be smoothly moved laterally, and slight leakage of oils and compressed gas can be completely prevented.
[Brief description of the drawings]
FIG. 1 is an overall schematic explanatory view of the present invention.
FIG. 2 is an enlarged cross-sectional view of a distance piece shaft seal device showing an embodiment of the present invention.
3 is a cross-sectional enlarged perspective view showing an example of a seal packing used in FIG . 3. FIG .
4 is a cross-sectional enlarged perspective view showing still another example of the seal packing used in FIG . 3. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cylinder 20 Crankcase 30 Distance piece 31 Bulkhead of cylinder side of distance piece 32 Bulkhead of crankcase side of distance piece 40 Cylinder shaft seal device 50 Distance piece shaft seal device 51 Outer box 511 Upper box 512 Lower box 517 Recess 53 Inner box 54 Adapter 55 V-shaped packing ring 56, 57 Coiled compression spring 533, 533A, 533B Hip seal 60 Piston rod

Claims (1)

シリンダ10とクランクケース20との間にシリンダ10に連設してジスタンスピース30を設け、シリンダ10側の隔壁31にシリンダー軸封装置40を設けると共に、ジスタンスピース30のクランクケース20側の隔壁32にジスタンスピース軸封装置50を設け、該ジスタンスピース軸封装置50は、上箱511と下箱512からなる外箱51と、上箱511に内嵌された内箱53と、内箱53とピストン棒60との間に内嵌されるアダプタ54とその上を押圧するコイル状圧縮バネ56と、アダプタ54に押圧されるV字形パッキンリング55とを備えると共に、上箱511の内壁上面に円周溝517を設けて、上端が、係止され、全体が上箱511の内壁に内接され、下端が、摺動特性のよいスラスト板571とスラスト板押え板572を介して、内箱53上面を押圧したコイル状圧縮バネ57を設けると共に、内箱53下面の円周溝5331に嵌入した、バネを内蔵するヒツプシール533を介して、内箱53下面と下箱512上面とを密着してなり、油類及び被圧縮ガスの僅かな洩れを防止できるようにしたことを特徴とするガス圧縮機のジスタンスピース軸封装置。A distance piece 30 is provided between the cylinder 10 and the crankcase 20 so as to be connected to the cylinder 10, a cylinder shaft sealing device 40 is provided on the partition wall 31 on the cylinder 10 side, and the crankpiece 20 side of the distance piece 30 is provided on the crankcase 20 side. A distance piece shaft sealing device 50 is provided in the partition wall 32. The distance piece shaft sealing device 50 includes an outer box 51 including an upper box 511 and a lower box 512, an inner box 53 fitted in the upper box 511, An adapter 54 fitted between the inner box 53 and the piston rod 60, a coiled compression spring 56 that presses the adapter 54, and a V-shaped packing ring 55 that is pressed by the adapter 54, and the upper box 511 A circumferential groove 517 is provided on the upper surface of the inner wall, the upper end is locked, the whole is inscribed in the inner wall of the upper box 511, and the lower end is a thrust plate 571 and a thrust plate presser having good sliding characteristics. A coil-like compression spring 57 that presses the upper surface of the inner box 53 is provided via the 572, and the lower surface of the inner box 53 and the lower side are provided via a hip seal 533 that is fitted in a circumferential groove 5331 on the lower surface of the inner box 53. A distance piece shaft seal device for a gas compressor, wherein the upper surface of the box 512 is brought into close contact with each other to prevent slight leakage of oils and compressed gas .
JP2001148246A 2001-05-17 2001-05-17 Gas compressor distance piece shaft seal device Expired - Lifetime JP3772099B2 (en)

Priority Applications (1)

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JP2001148246A JP3772099B2 (en) 2001-05-17 2001-05-17 Gas compressor distance piece shaft seal device

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Application Number Priority Date Filing Date Title
JP2001148246A JP3772099B2 (en) 2001-05-17 2001-05-17 Gas compressor distance piece shaft seal device

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JP3772099B2 true JP3772099B2 (en) 2006-05-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5313439B2 (en) * 2006-07-10 2013-10-09 株式会社村田製作所 Dispersing apparatus for slurry containing metal particles or ceramic particles
JP2008281028A (en) * 2007-05-08 2008-11-20 Akatake Engineering Kk Shaft seal device
JP5059662B2 (en) * 2008-03-06 2012-10-24 株式会社神戸製鋼所 Gas leakage prevention system for reciprocating compressors
KR200462530Y1 (en) 2009-02-02 2012-09-13 이병찬 Sprayer plunger packing
JP2015017681A (en) * 2013-07-12 2015-01-29 ダイニチ工業株式会社 Part attachment structure
CN109386452A (en) * 2017-08-04 2019-02-26 天津信志达密封科技有限公司 A kind of compressor sealing arrangement

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