JPH01203764A - High pressure fluid sealing device - Google Patents
High pressure fluid sealing deviceInfo
- Publication number
- JPH01203764A JPH01203764A JP63026534A JP2653488A JPH01203764A JP H01203764 A JPH01203764 A JP H01203764A JP 63026534 A JP63026534 A JP 63026534A JP 2653488 A JP2653488 A JP 2653488A JP H01203764 A JPH01203764 A JP H01203764A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- packing
- packing ring
- tapered surface
- top adapter
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 27
- 239000012530 fluid Substances 0.000 title claims description 14
- 238000012856 packing Methods 0.000 claims abstract description 70
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 210000004907 gland Anatomy 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［ａ業上の利用分野］
本発明は例えばバルブやスイベルジヨイントのような装
置において、高圧の流体をシールするのに好適な装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device suitable for sealing high-pressure fluid in devices such as valves and swivel joints.
［従来の技術］
従来、一般的によく使用されてきた流体シール用パツキ
ンには、大別してセルフシール形パツキンと圧縮型パツ
キンとがある。[Prior Art] Fluid sealing packings that have been commonly used in the past can be roughly divided into self-sealing packings and compression-type packings.
本出願人は、適用圧力が数千にｇ−ｆ／ｃｍ２以上の高
圧流体封止装置を既に提案（特公昭６１−８３１１号）
した。The applicant has already proposed a high-pressure fluid sealing device with an applied pressure of several thousand gf/cm2 or more (Japanese Patent Publication No. 8311/1983).
did.
第３図は前記従来の超高圧パツキンの側断面図である。FIG. 3 is a side sectional view of the conventional ultra-high pressure packing.
図において、１はピストンなどの内側部材、２はシリン
ダなどの外側部材、３は内側部材１と外側部材２の間に
形成された環状間隙の一部に設置されたパツキン箱であ
り、パッキン箱３内には高圧室４側から低圧側へ向って
順次、剛性のトップアダプタリング５、弾性リング（０
−リング）６、パツキンリング７、バックアップリング
８、剛性のボトムアダプタリング９を配し、これらをグ
ランドナツト（図示せず）によフて外側部材２に固定し
ている。In the figure, 1 is an inner member such as a piston, 2 is an outer member such as a cylinder, and 3 is a packing box installed in a part of the annular gap formed between the inner member 1 and the outer member 2. Inside 3, a rigid top adapter ring 5 and an elastic ring (0
- ring) 6, a packing ring 7, a backup ring 8, and a rigid bottom adapter ring 9, which are fixed to the outer member 2 by means of a gland nut (not shown).
パツキンリング７には、前記トップアダプタリング５と
パッキン箱３内面との間で断面三角型状の環状空間１０
を形成すべく外周面の所定長さにわたって先端へ向って
縮径するテーパ面７１が形成されており、グランドナツ
トの固定により、図示の好適な例では前記テーパ面７１
は、弾性リング６の圧縮力を内側部材１方向の力に変換
して内側部材１方向に縮小すべく作用し、初期シールを
完了する。逆に弾性リング６は合成ゴム、天然ゴム等の
復元力を有する部材よりなる断面五角形状のリングで形
成し、グランドナツトの固定により、図示の好適な例で
はパツキンリング７との当接面は弾性リング６の圧縮力
をパッキン箱３内面方向の力に変換して、パッキン箱３
内面方向に縮小すべく作用し、初期シールを完了する。The packing ring 7 has an annular space 10 having a triangular cross section between the top adapter ring 5 and the inner surface of the packing box 3.
A tapered surface 71 whose diameter decreases toward the tip is formed over a predetermined length of the outer circumferential surface to form a
acts to convert the compressive force of the elastic ring 6 into a force in the direction of the inner member 1 and to reduce the force in the direction of the inner member 1, thereby completing the initial sealing. On the other hand, the elastic ring 6 is formed of a member having a restoring force such as synthetic rubber or natural rubber and has a pentagonal cross section, and by fixing it with a gland nut, in the preferred example shown, the contact surface with the packing ring 7 is The compressive force of the elastic ring 6 is converted into a force directed toward the inner surface of the packing box 3.
It acts to shrink inward, completing the initial seal.
またトップアダプタリング側の端面は軸心と直交する平
らな端面に形成されている。Further, the end face on the top adapter ring side is formed into a flat end face perpendicular to the axis.
更に、第３図において高圧室４の流体圧が上昇すると、
パッキン箱３内のトップアダプタリング５は高圧室４の
流体圧によって図の左方向へ押され、トップアダプタリ
ング５はさらに環状空間１０内の弾性リング６を圧縮し
、弾性リング６はパッキン箱３内面に更に強く押圧され
、パツキンリング７は弾性リング６により内側部材１方
向に更に強く押圧され、初期シールより更に強固なシー
ルを成すものとなる。Furthermore, in FIG. 3, when the fluid pressure in the high pressure chamber 4 increases,
The top adapter ring 5 inside the packing box 3 is pushed to the left in the figure by the fluid pressure in the high pressure chamber 4, and the top adapter ring 5 further compresses the elastic ring 6 inside the annular space 10, which causes the elastic ring 6 to press against the packing box 3. The sealing ring 7 is pressed even more strongly against the inner surface, and the packing ring 7 is pressed even more strongly in the direction of the inner member 1 by the elastic ring 6, forming an even stronger seal than the initial seal.
［発明が解決しようとする課題］
ところがパツキンリング７は、その摩擦や応力による破
損等の要因を考慮して、その縮径端部７２をある程度の
厚み（径方向）を持つて形成されており、弾性リング６
の圧縮力をパツキンリング７の内側部材１へ向う圧縮力
に変換した時、内側部材１とパツキンリング７との間の
面圧が初期シールを安定に維持するまでに達しないとい
う問題があった。[Problems to be Solved by the Invention] However, the packing ring 7 is formed with its reduced diameter end 72 having a certain thickness (in the radial direction) in consideration of factors such as damage caused by friction and stress. , elastic ring 6
When converting the compressive force of the packing ring 7 toward the inner member 1, there was a problem that the surface pressure between the inner member 1 and the packing ring 7 did not reach a level to maintain a stable initial seal. .
そこで、初期シール時にグランドナツトを強く締めて、
弾性リング６とパツキンリング７への圧縮力を大きくす
ることが行われていたが、圧縮のため寿命が短くなった
り、下記のようにシール性に問題が生じることがあった
。Therefore, tighten the gland nut strongly during initial sealing.
Although it has been attempted to increase the compression force applied to the elastic ring 6 and the packing ring 7, the compression may shorten the service life or cause problems in sealing performance as described below.
第４図はその時のパツキン箱３の拡大断面図である。な
お、図において第３図と同一符号は同−又は相当部分を
示す。FIG. 4 is an enlarged sectional view of the packing box 3 at that time. In the drawings, the same reference numerals as in FIG. 3 indicate the same or corresponding parts.
トップアダプタリング５が高圧側の流体圧によって押さ
れた時、図に示すように、弾性リング６がパツキンリン
グ７とトップアダプタリング５との間に咬み込まれるこ
とがあり、そのために、シール性に問題を生じると共に
、弾性リング６の破損、永久変形により寿命が減少する
などの問題が生じていた。When the top adapter ring 5 is pushed by the fluid pressure on the high-pressure side, the elastic ring 6 may be caught between the packing ring 7 and the top adapter ring 5, as shown in the figure, and therefore the sealing performance may be impaired. In addition, problems such as damage and permanent deformation of the elastic ring 6, resulting in a shortened lifespan, have also occurred.
そこで本発明は、弾性リングがパツキンリングとトップ
アダプタリング間に咬み込まれ難く、しかもシール性が
高く、弾性リングおよびパツキンリングの寿命の長い高
圧流体封止装置を得ることを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a high-pressure fluid sealing device in which an elastic ring is less likely to be caught between a packing ring and a top adapter ring, has high sealing performance, and has a long lifespan for the elastic ring and packing ring.
［課題を解決するための手段］
本発明に係る高圧流体封止装置では、相対移動する外側
部材と内側部材からなる二部材間に形成された環状間隙
を封止して高圧部と低圧部とを仕切るために、前記環状
間隙内に、剛性のトップアダプタリング、弾性リング、
該リング圧縮用のパツキンリング、該パツキンリングよ
りも高い降伏強度を有するバックアップリングを、前記
高圧部側から順に配置してなる超高圧封止装置において
、前記パツキンリングが、前記外側部材内壁面と前記ト
ップアダプタリングの端面との間で台形断面形状の環状
空間を形成すべく前記トップアダプタリング側の端面へ
向って縮径する外周テーパ面と該テーパ面の縮径側先端
に連なる縮径平行筒状端部を有し、前記弾性リングが、
前記台形断面形状の環状空間内にて、前記外側部材内壁
面と、パツキンリングの前記テーパ面及び前記縮径平行
筒状端部外周面と、前記トップアダプタリングの端面と
によって圧縮されているものである。[Means for Solving the Problems] In the high-pressure fluid sealing device according to the present invention, the annular gap formed between two members, which are relatively movable, consisting of an outer member and an inner member, is sealed, and a high-pressure part and a low-pressure part are connected to each other. A rigid top adapter ring, an elastic ring,
In the ultra-high pressure sealing device, in which a packing ring for compressing the ring and a backup ring having a higher yield strength than the packing ring are arranged in order from the high pressure part side, the packing ring is in contact with the inner wall surface of the outer member. An outer circumferential tapered surface that reduces in diameter toward the end surface on the top adapter ring side to form an annular space having a trapezoidal cross-section with the end surface of the top adapter ring, and a diameter-reduced parallel surface that continues to the tip of the tapered surface on the reduced diameter side. the elastic ring has a cylindrical end;
Compressed in the annular space having a trapezoidal cross-sectional shape by the inner wall surface of the outer member, the tapered surface of the packing ring, the outer peripheral surface of the reduced diameter parallel cylindrical end, and the end surface of the top adapter ring. It is.
［作用］
本発明においては、パツキンリングが外側部材の内壁面
と前記トップアダプタリングとの間で台形断面形状の環
状空間を形成すべくトップアダプタリング側の端面へ向
って縮径する外周テーパ面と該テーパ面の縮径側先端に
連なる縮径平行筒状端部を有し、弾性リングが、前記台
形断面形状の環状空間内にて、前記外側部材内壁面と、
前記パツキンリングのテーパ面及び前記縮径平行筒状端
部外周面と、前記トップアダプタリングの端面とによっ
て圧縮されているため、前記弾性リングが前記パツキン
リングと前記トップアダプタリング間に咬み込まれ難い
と共に、前記トップアダプタリングの縮径平行筒状端部
が容易に内側へ押圧されてめんあつが確保されるのでシ
ール性が高くなる。[Function] In the present invention, the packing ring has an outer peripheral tapered surface whose diameter decreases toward the end surface on the top adapter ring side so as to form an annular space having a trapezoidal cross section between the inner wall surface of the outer member and the top adapter ring. and a diameter-reduced parallel cylindrical end connected to the diameter-reduced side tip of the tapered surface, and the elastic ring is connected to the inner wall surface of the outer member within the annular space having the trapezoidal cross-sectional shape;
Since the elastic ring is compressed by the tapered surface of the packing ring and the outer peripheral surface of the reduced diameter parallel cylindrical end and the end surface of the top adapter ring, the elastic ring is bitten between the packing ring and the top adapter ring. At the same time, the diameter-reduced parallel cylindrical end of the top adapter ring is easily pressed inward to ensure hotness, resulting in high sealing performance.
［実施例］ 第１図は本発明の一実施例の構成を示す断面図である。[Example] FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention.
図において、従来例と同一の符号は同一部を示しており
、その部分の説明は省略する。In the figure, the same reference numerals as in the conventional example indicate the same parts, and the explanation of those parts will be omitted.
６ａは台形断面形状の環状空間１０ａに配置された断面
略五角形状の弾性リング、７ａは外周テーパ面７１の縮
径側先端に内側部材の内周面と平行な縮径筒状端部７３
を一体に有するパツキンリングである。6a is an elastic ring with a substantially pentagonal cross section arranged in an annular space 10a with a trapezoidal cross section, and 7a is a reduced diameter cylindrical end portion 73 parallel to the inner circumferential surface of the inner member at the reduced diameter side tip of the outer peripheral tapered surface 71.
This is a packing ring that has an integral part.
パツキンリング７ａは、前記トップアダプタリング５と
パツキン箱３内面との間で台形断面形状の環状空間１０
ａを形成すべく外周所定長さにわたって先端方向にテー
パ面７１を有すると共に、その縮径側先端に連なって縮
径平行筒状端部７３を一体に有しており、逆に弾性リン
グ６ａは合成ゴム、天然ゴム等の復元力を有する部材よ
りなる断面五角形状のリングで形成され、しかもパツキ
ンリング７ａの縮径平行筒状端部７３の外周面に接する
面の寸法は、縮径平行筒状端部７３の長さと同値か、よ
り短く構成されている。The packing ring 7a has an annular space 10 having a trapezoidal cross section between the top adapter ring 5 and the inner surface of the packing box 3.
The elastic ring 6a has a tapered surface 71 in the distal direction over a predetermined length of the outer periphery to form a shape, and integrally has a diameter-reduced parallel cylindrical end portion 73 connected to the diameter-reduced end of the surface. It is formed of a ring with a pentagonal cross section made of a material having restoring force such as synthetic rubber or natural rubber, and the dimension of the surface in contact with the outer peripheral surface of the reduced diameter parallel cylindrical end 73 of the packing ring 7a is that of a reduced diameter parallel cylinder. The length is equal to or shorter than the length of the shaped end portion 73.
弾性リング６ａを嵌合したとき、該環状空間１０ａを形
成するパツキン箱３の各内面及びパツキンリング７ａの
テーパ面７１と縮径平行筒状端部７３の外周面にそれぞ
れ密着状に面接触する３つの当接面がそれぞれ全周に互
って確実にかつ充分確保されることが重要であり、図示
の好適な例では、弾性リング６ａのパツキンリング７ａ
との当接面は、パツキンリング７ａのテーパ面７１と対
応する形状の斜面部及びパツキンリング７ａの縮径平行
筒状端部７３の外周面と対応する形状の円筒内面部で形
成され、また高圧側端面の外周縁部は鋭角断面に形成さ
れている。When the elastic ring 6a is fitted, it comes into close surface contact with each inner surface of the packing box 3 forming the annular space 10a, the tapered surface 71 of the packing ring 7a, and the outer peripheral surface of the diameter-reduced parallel cylindrical end 73. It is important that the three contact surfaces are reliably and sufficiently secured to each other around the entire circumference, and in the preferred example shown, the packing ring 7a of the elastic ring 6a
The contact surface with the sealing ring 7a is formed by an inclined surface portion having a shape corresponding to the tapered surface 71 of the packing ring 7a, and a cylindrical inner surface portion having a shape corresponding to the outer peripheral surface of the diameter-reduced parallel cylindrical end portion 73 of the packing ring 7a, and The outer peripheral edge of the high-pressure side end face is formed to have an acute-angled cross section.
勿論弾性リング６ａの形状は上記断面五角形状のものに
限定されず、第２図の６ｂに示されるような断面略円形
状のもの又は断面略三角形状に近いもの等種々変形可能
であり、その時、パツキンリング７ａの縮径平行筒状端
部７３の外周面に接する面の寸法が、縮径平行筒状端部
７３の長さと同値か、より短く構成されていればよい。Of course, the shape of the elastic ring 6a is not limited to the pentagonal cross-section described above, and can be modified in various ways, such as a substantially circular cross-section as shown in 6b of FIG. 2, or a substantially triangular cross-section, etc. The dimension of the surface in contact with the outer peripheral surface of the reduced diameter parallel cylindrical end 73 of the packing ring 7a may be equal to or shorter than the length of the reduced diameter parallel cylindrical end 73.
このような構成において、初期シール時には、パツキン
箱３、トップアダプタリング５およびパツキンリング７
ａによって形成された台形断面形状の環状空間１０ａ内
に嵌装された弾性リング６ａは圧縮された状態にある。In such a configuration, at the time of initial sealing, the packing box 3, top adapter ring 5, and packing ring 7 are
The elastic ring 6a fitted in the annular space 10a having a trapezoidal cross-sectional shape formed by a is in a compressed state.
その結果、弾性リング６ａの復元力は全周に作用し、各
当接面はパツキンリング７ａにより全周で密着状態とさ
れる。As a result, the restoring force of the elastic ring 6a acts on the entire circumference, and each contact surface is brought into close contact with the packing ring 7a on the entire circumference.
パツキン箱３およびトップアダプタリング５は剛性の材
料で形成されているためそれ以上変形することがなく、
従って弾性リング６ａの復元力はパツキンリング７ａを
変形せしめるように作用する。Since the packing box 3 and the top adapter ring 5 are made of rigid material, they will not deform any further.
Therefore, the restoring force of the elastic ring 6a acts to deform the packing ring 7a.
ところが、パツキンリング７ａは外周をパツキン箱３内
面、一方の端部をバックアップリング８によって拘束さ
れており、しかも形状的にも弾性リング６ａの復元力が
パツキンリング７ａの特に縮径平行筒状端部７３を内側
部材１に押圧するように変形させるものである。However, the outer periphery of the packing ring 7a is restrained by the inner surface of the packing box 3, and one end is restrained by the backup ring 8, and furthermore, the restoring force of the elastic ring 6a is constrained by the shape, especially at the reduced diameter parallel cylindrical end of the packing ring 7a. The portion 73 is deformed so as to be pressed against the inner member 1.
かくしてパツキンリング７ａは、テーパ面７１および縮
径平行筒状端部７３での押圧により、内側部材１との間
に接面圧力を生じ、またパツキンリング７ａは弾性リン
グ６ａに密着してシールすると共に、弾性リング６ａは
パッキン箱３内面に密着することによって初期シールが
達成される。In this way, the packing ring 7a generates contact pressure with the inner member 1 due to the pressure applied by the tapered surface 71 and the diameter-reduced parallel cylindrical end 73, and the packing ring 7a closely contacts and seals the elastic ring 6a. At the same time, the elastic ring 6a comes into close contact with the inner surface of the packing box 3, thereby achieving an initial seal.
さらに、第１図において高圧室４の流体圧が上昇すると
、パッキン箱３内のトップアダプタリング５は高圧室４
の流体圧によって図の左方向へ押され、トップアダプタ
リング５はさらに環状空間１０ａ内の弾性リング６ａを
楔状に押し付ける。Furthermore, in FIG. 1, when the fluid pressure in the high pressure chamber 4 increases, the top adapter ring 5 in the packing box 3
The top adapter ring 5 is pushed to the left in the figure by the fluid pressure of the top adapter ring 5, and the top adapter ring 5 further presses the elastic ring 6a in the annular space 10a in a wedge shape.
しかし、パツキンリング７ａはテーパ面７１を持つため
、高圧室４の流体圧によって押圧されたトップアダプタ
リング５は弾性リング６ａと共にパツキンリング７ａを
も押圧する。これにより、弾性リング６ａは以前よりも
さらにパツキンリング７ａのテーパ面７１および縮径平
行筒状端部７３で内側部材１に押し付け、これらの間で
接面圧力として作用することとなり、弾性リング６ａは
パッキン箱３内面に更に強く押し付けられたシールを成
すと同時に、縮径平行筒状端部７３の存在により弾性リ
ング６ａがトップアダプタリング５とパツキンリング７
ａの間に咬み込まれ難くなる。However, since the packing ring 7a has a tapered surface 71, the top adapter ring 5 pressed by the fluid pressure of the high pressure chamber 4 also presses the packing ring 7a together with the elastic ring 6a. As a result, the elastic ring 6a is pressed against the inner member 1 by the tapered surface 71 and the diameter-reduced parallel cylindrical end 73 of the packing ring 7a, and a contact pressure acts between these, and the elastic ring 6a forms a seal that is more strongly pressed against the inner surface of the packing box 3, and at the same time, due to the presence of the reduced diameter parallel cylindrical end 73, the elastic ring 6a is tightly pressed against the top adapter ring 5 and the packing ring 7.
It becomes difficult to get caught between a.
この結果、本発明のシールを用いることで、所期シール
の問題をなくすと共に、シール寿命時間を１．５〜３倍
に成し得た。As a result, by using the seal of the present invention, it was possible to eliminate the problem of the intended seal and to increase the seal life time by 1.5 to 3 times.
［発明の効果］
本発明は以上説明したとおり、弾性リングがパツキンリ
ングとトップアダプタリングに咬み込まれ難く、パツキ
ンリングのテーパ面でのシールに加えて縮径平行筒状端
部でのシールが存在するため、シール性が高く、初期シ
ールでの弾性リングとトップアダプタリングに加える圧
縮力が小さくなるため弾性リングおよびパツキンリング
の寿命が長いという効果がある。[Effects of the Invention] As explained above, the present invention prevents the elastic ring from being bitten by the packing ring and the top adapter ring, and in addition to the sealing at the tapered surface of the packing ring, the sealing at the diameter-reduced parallel cylindrical end is achieved. Because of its presence, the sealing performance is high and the compressive force applied to the elastic ring and top adapter ring during initial sealing is reduced, which has the effect of extending the life of the elastic ring and packing ring.
第１図は本発明の一実施例の構成を示す断面図、第２図
は別の実施例の構成を示す断面図、第３図は従来のパツ
キン部の構成を示す断面図、第４図は高圧側に圧力が加
わった時の封止部の断面図である。
図において、５はトップアダプタリング、６ａ・６ｂは
弾性リング、７ａはパツキンリング、７１はテーパ面、
７３は縮径平行筒状端部、１０ａは環状空間である。
なお、図において同一符号は同−又は相当部分を示す。
代理人 弁理士 佐 藤 正 年
第１図
第２図FIG. 1 is a sectional view showing the structure of one embodiment of the present invention, FIG. 2 is a sectional view showing the structure of another embodiment, FIG. 3 is a sectional view showing the structure of a conventional packing part, and FIG. 4 is a sectional view showing the structure of a conventional packing part. is a sectional view of the sealing portion when pressure is applied to the high pressure side. In the figure, 5 is a top adapter ring, 6a and 6b are elastic rings, 7a is a packing ring, 71 is a tapered surface,
73 is a diameter-reduced parallel cylindrical end, and 10a is an annular space. In the figures, the same reference numerals indicate the same or equivalent parts. Agent: Patent Attorney Tadashi Sato Figure 1 Figure 2
Claims (1)
成された環状間隙を封止して高圧部と低圧部とを仕切る
ために、前記環状間隙内に、剛性のトップアダプタリン
グ、弾性リング、該リング圧縮用のパッキンリング、該
パッキンリングよりも高い降伏強度を有するバックアッ
プリングを、前記高圧部側から順に配置してなる超高圧
封止装置において、 前記パッキンリングが、前記外側部材内壁面と前記トッ
プアダプタリングの端面との間で台形断面形状の環状空
間を形成すべく前記トップアダプタリング側の端面へ向
って縮径する外周テーパ面と該テーパ面の縮径側先端に
連なる縮径平行筒状端部を有し、 前記弾性リングが、前記台形断面形状の環状空間内にて
、前記外側部材内壁面と、パッキンリングの前記テーパ
面及び前記縮径平行筒状端部外周面と、前記トップアダ
プタリングの端面とによって圧縮されていることを特徴
とする高圧流体封止装置。[Claims] In order to seal the annular gap formed between the two members consisting of the outer member and the inner member that move relative to each other and partition the high-pressure part and the low-pressure part, a rigid top is installed in the annular gap. An ultra-high pressure sealing device comprising an adapter ring, an elastic ring, a packing ring for compressing the ring, and a backup ring having a higher yield strength than the packing ring, arranged in this order from the high-pressure part side, the packing ring comprising: an outer peripheral tapered surface that reduces in diameter toward the end surface on the top adapter ring side to form an annular space with a trapezoidal cross section between the inner wall surface of the outer member and the end surface of the top adapter ring; and a reduced diameter side of the tapered surface. The elastic ring has a diameter-reduced parallel cylindrical end portion connected to a tip, and the elastic ring has an inner wall surface of the outer member, the tapered surface of the packing ring, and the diameter-reduced parallel cylindrical end portion in the annular space having a trapezoidal cross-sectional shape. A high-pressure fluid sealing device, characterized in that the high-pressure fluid sealing device is compressed by an outer circumferential surface of an end portion and an end surface of the top adapter ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026534A JPH0735858B2 (en) | 1988-02-09 | 1988-02-09 | High pressure fluid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026534A JPH0735858B2 (en) | 1988-02-09 | 1988-02-09 | High pressure fluid sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01203764A true JPH01203764A (en) | 1989-08-16 |
| JPH0735858B2 JPH0735858B2 (en) | 1995-04-19 |
Family
ID=12196156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63026534A Expired - Lifetime JPH0735858B2 (en) | 1988-02-09 | 1988-02-09 | High pressure fluid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735858B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161982A (en) * | 2000-11-24 | 2002-06-07 | Sugino Mach Ltd | Sealing arrangement |
| EP3121447A1 (en) | 2015-07-23 | 2017-01-25 | Sugino Machine Limited | Ultrahigh-pressure sealing device and reciprocatiing pump |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4632282B2 (en) * | 2001-08-24 | 2011-02-16 | 株式会社スギノマシン | High pressure fluid sealing device |
| JP2014101938A (en) * | 2012-11-20 | 2014-06-05 | Kawasaki Heavy Ind Ltd | Slide seal and seal structure |
-
1988
- 1988-02-09 JP JP63026534A patent/JPH0735858B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161982A (en) * | 2000-11-24 | 2002-06-07 | Sugino Mach Ltd | Sealing arrangement |
| EP3121447A1 (en) | 2015-07-23 | 2017-01-25 | Sugino Machine Limited | Ultrahigh-pressure sealing device and reciprocatiing pump |
| US20170023135A1 (en) * | 2015-07-23 | 2017-01-26 | Sugino Machine Limited | Ultrahigh-pressure sealing device and reciprocating pump |
| US9638330B2 (en) | 2015-07-23 | 2017-05-02 | Sugino Machine Limited | Ultrahigh-pressure sealing device and reciprocating pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0735858B2 (en) | 1995-04-19 |
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