JPS6030522Y2 - Pressure equalization structure of shaft sealing device - Google Patents

Pressure equalization structure of shaft sealing device

Info

Publication number
JPS6030522Y2
JPS6030522Y2 JP2498383U JP2498383U JPS6030522Y2 JP S6030522 Y2 JPS6030522 Y2 JP S6030522Y2 JP 2498383 U JP2498383 U JP 2498383U JP 2498383 U JP2498383 U JP 2498383U JP S6030522 Y2 JPS6030522 Y2 JP S6030522Y2
Authority
JP
Japan
Prior art keywords
hole
pressure
pressure equalizing
pressure equalization
chamber
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
Application number
JP2498383U
Other languages
Japanese (ja)
Other versions
JPS58158859U (en
Inventor
佳男 瀬良
Original Assignee
三井造船株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三井造船株式会社 filed Critical 三井造船株式会社
Priority to JP2498383U priority Critical patent/JPS6030522Y2/en
Publication of JPS58158859U publication Critical patent/JPS58158859U/en
Application granted granted Critical
Publication of JPS6030522Y2 publication Critical patent/JPS6030522Y2/en
Expired legal-status Critical Current

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  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Description

【考案の詳細な説明】 本考案はバレル型−ボ圧縮機等の両軸端の軸封装置間で
の均圧構造に関するものでる。
[Detailed Description of the Invention] The present invention relates to a pressure equalization structure between shaft sealing devices at both shaft ends of a barrel-type compressor or the like.

ターボ圧縮機の両端の軸封装置ではれぞれ単位の軸封群
を軸方向に数段に並べ、それら単位軸封群の間には、両
軸封装置間で均圧するための室すなわち均圧室を設ける
構造をとる。
In the shaft seal devices at both ends of the turbo compressor, each unit shaft seal group is arranged in several stages in the axial direction, and between the unit shaft seal groups there is a chamber for equalizing the pressure between both shaft seal devices. The structure has a pressure chamber.

一方ロータの危険速度を高めるにはロータの軸受間距離
をなるべく小さくする必要があり、そのためには軸受自
体の軸方向長さが短かくなければならない。
On the other hand, in order to increase the critical speed of the rotor, it is necessary to reduce the distance between the rotor bearings as much as possible, and for this purpose, the axial length of the bearings themselves must be short.

均圧室は軸受長さの一部をしめるが、その軸方向長さは
従来構造ではこの室に連なる均圧孔の直径に概ね等しく
とらねばならず、このため均圧孔室空間は必要以上の軸
方向の長さをもつこととなる。
The pressure equalization chamber occupies a part of the bearing length, but in conventional structures, its axial length must be approximately equal to the diameter of the pressure equalization hole connected to this chamber, so the pressure equalization hole chamber space is more than necessary. It has an axial length of .

本考案は均圧孔を軸方向に狭く、輪切線方向に広くとる
ことにより均圧孔の所要の断面積を与えるようにして、
これにより均圧室の軸方向の長さも必要限度までに小と
し軸受の長さを短くし、ロータの軸受距離もそれだけ小
さくとれるようにしたものである。
The present invention provides the required cross-sectional area of the pressure equalization hole by making the pressure equalization hole narrow in the axial direction and wide in the cross section direction.
As a result, the length of the pressure equalizing chamber in the axial direction can be reduced to the necessary limit, the length of the bearing can be shortened, and the bearing distance of the rotor can be made correspondingly smaller.

第1図、第2図は従来例に示す。FIGS. 1 and 2 show a conventional example.

第1図は軸を水平にしておかれたバレル型ターボ圧縮機
の軸5を含んで、右側の端蓋2の部分のケーシング1ま
でを含む上半分の断面図で、第2図はそこでの均圧孔室
a′、b′、C′からの均圧孔の引出し部分の断面図で
ある。
Figure 1 is a sectional view of the upper half of the barrel-type turbo compressor, including the shaft 5 with the shaft kept horizontal, up to the casing 1 at the end cover 2 on the right side, and Figure 2 is a cross-sectional view of the upper half thereof. FIG. 3 is a cross-sectional view of the lead-out portion of the pressure equalization hole from the pressure equalization hole chambers a', b', and C'.

図で1はケーシング、2は端蓋、4は単位軸封群(フィ
ン群)11の支持体をなす軸封環、5はロータ軸、7′
は軸封環4を同心に納めている環状の通路ブロックで端
蓋2に同心にまめこまれている。
In the figure, 1 is a casing, 2 is an end cover, 4 is a shaft seal ring forming a support for the unit shaft seal group (fin group) 11, 5 is a rotor shaft, and 7'
is an annular passage block in which the shaft sealing ring 4 is concentrically housed, and is concentrically inserted into the end cover 2.

フィン群11同志の間には均圧室a’ 、 bl 、
cIがあり、これは通路ブロック7′の孔10、端蓋2
の肉厚内の孔イを通して均圧管12につながれ、均圧管
12は圧縮機の左側の軸封部の対称位置の均圧室につな
がれる。
Between the fin group 11, there are pressure equalization chambers a', bl,
cI, which is the hole 10 of the passage block 7', the end cover 2
The pressure equalizing pipe 12 is connected to a pressure equalizing pipe 12 through a hole in the wall thickness of the compressor, and the pressure equalizing pipe 12 is connected to a pressure equalizing chamber at a symmetrical position in the shaft sealing part on the left side of the compressor.

ここで端蓋における孔イの径d(第2図)は均圧孔とし
ての所要断面積を与えるものでなければならず、この孔
イを均圧室a′あるいはbl 、 cIに継ぐ通路ブロ
ック7′における貫通孔10も孔イの径dとほぼ同じ径
とする必要があり、これに従い均圧室at。
Here, the diameter d (Fig. 2) of the hole A in the end cover must give the required cross-sectional area as a pressure equalizing hole, and a passage block connecting this hole A to the pressure equalizing chamber a' or BL, cI. The through hole 10 in 7' also needs to have approximately the same diameter as the diameter d of hole A, and accordingly the pressure equalizing chamber at.

bl、 cIの軸方向の長さも孔イの径dに略合せる必
要があり、軸封間装置つまり軸受の軸方向長さを小にす
るには以上のような限度があった。
The axial lengths of bl and cI must also approximately match the diameter d of hole A, and there are limits to reducing the axial length of the shaft sealing device, that is, the bearing.

本考案は第3図のように通路ブロック7を均圧室a、
be cの個所で軸方向に合される円環7aの積重ねと
して構成し、この円環面に第4,5図のように均圧用の
溝二を深さを小とし、つまり浅くし、軸に切線方向の巾
を大として均圧孔としての所要断面積をもたせて半径方
向に加工し、これを軸封環側では均圧室に通じさせ、の
反対側では端蓋の均圧孔に通じる孔ホを設けたものであ
る。
In the present invention, as shown in FIG.
It is constructed as a stack of circular rings 7a which are brought together in the axial direction at points b and c, and the groove 2 for pressure equalization is made small in depth, that is, shallow, on the circular ring surface as shown in Figures 4 and 5. is machined in the radial direction by increasing the width in the cutting line direction to provide the required cross-sectional area as a pressure equalizing hole, and making it communicate with the pressure equalizing chamber on the shaft seal ring side, and into the pressure equalizing hole in the end cover on the opposite side. It has a hole for communication.

以上のように均圧孔を浅い溝で構成することにより、こ
れに続く均圧室も軸方向で狭いものとすることができ、
これが軸受長さの短縮、つまりは軸間距離の短縮を実現
しうろこととなる。
By configuring the pressure equalization hole with a shallow groove as described above, the pressure equalization chamber that follows it can also be made narrower in the axial direction.
This makes it possible to shorten the bearing length, and thus the distance between the shafts.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図、第2図は軸封部分の従来例で、第1図は右側端
蓋、における軸封装置の上半分を断面で、第2図はその
軸封部分の均圧孔引出しの状態を断面で、第3図は第1
図と同じ断面で本考案のものを示す。 第4図、第5図は本考案の通路ブロックを構成する円環
の正面図。 1・・・・・・ケーシング、2・・・・・・端蓋、4・
・・・・・軸封環、5・・・・・・軸、7,7′・・・
・・・通路ブロック。
Figures 1 and 2 show conventional examples of the shaft seal part. Figure 1 is a cross section of the upper half of the shaft seal device in the right end cover, and Figure 2 shows the condition of the pressure equalization hole drawn out in the shaft seal part. In cross section, Figure 3 shows the first
The device of the present invention is shown in the same cross section as the figure. 4 and 5 are front views of a ring constituting the passage block of the present invention. 1...Casing, 2...End cover, 4.
...Shaft seal ring, 5...Shaft, 7, 7'...
...Aisle block.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 端蓋に同心に環状の均圧孔通路ブロック7がはめこまれ
、通路ブロック7にフィン群11の支持体となる軸封環
4が同心に収められ、フィン群同志の間に軸封間物圧室
をもつとき、通路ブロック均圧室個所で軸方向に重なる
数個の円環7aの積重ねとして構威し、この円環面に深
さを小とし巾をとして均圧孔としての所要の断面積をも
たせた均圧用の溝二を半径方向に加工し、これを軸封開
側では均圧室に、その反対側では端蓋の均圧孔に通じさ
せた軸封装置の均圧構造。
An annular pressure equalizing hole passage block 7 is fitted concentrically into the end cover, a shaft seal ring 4 serving as a support for the fin group 11 is concentrically fitted in the passage block 7, and a shaft seal is placed between the fin groups. When a pressure chamber is provided, it is constructed as a stack of several rings 7a that overlap in the axial direction at the passage block pressure equalization chamber, and the depth and width are made small on this toroidal surface to form the required pressure equalization hole. A pressure equalizing structure for a shaft seal device in which a pressure equalizing groove with a cross-sectional area is machined in the radial direction, and this communicates with the pressure equalizing chamber on the shaft sealing side and the pressure equalizing hole in the end cover on the opposite side. .
JP2498383U 1983-02-21 1983-02-21 Pressure equalization structure of shaft sealing device Expired JPS6030522Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2498383U JPS6030522Y2 (en) 1983-02-21 1983-02-21 Pressure equalization structure of shaft sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2498383U JPS6030522Y2 (en) 1983-02-21 1983-02-21 Pressure equalization structure of shaft sealing device

Publications (2)

Publication Number Publication Date
JPS58158859U JPS58158859U (en) 1983-10-22
JPS6030522Y2 true JPS6030522Y2 (en) 1985-09-12

Family

ID=33307278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2498383U Expired JPS6030522Y2 (en) 1983-02-21 1983-02-21 Pressure equalization structure of shaft sealing device

Country Status (1)

Country Link
JP (1) JPS6030522Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0674798B2 (en) * 1988-01-22 1994-09-21 株式会社日立製作所 Process turbo compressor shaft seal device
JP2820234B2 (en) * 1993-06-16 1998-11-05 小松ゼノア 株式会社 Crushing pump

Also Published As

Publication number Publication date
JPS58158859U (en) 1983-10-22

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