WO2024116502A1 - Valve - Google Patents
Valve Download PDFInfo
- Publication number
- WO2024116502A1 WO2024116502A1 PCT/JP2023/031082 JP2023031082W WO2024116502A1 WO 2024116502 A1 WO2024116502 A1 WO 2024116502A1 JP 2023031082 W JP2023031082 W JP 2023031082W WO 2024116502 A1 WO2024116502 A1 WO 2024116502A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- seat member
- seat
- passage
- outlet
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims abstract 4
- 238000007789 sealing Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Definitions
- This invention relates to a fluid control valve, and in particular to a valve that is suitable for use as an on-off valve for controlling high-pressure fluid.
- the valve for high-pressure fluid described in Patent Document 1 shown in Figure 5 (1) has a valve body 101 in which a valve chamber 104 is formed that communicates with a fluid inlet 102 and a fluid outlet 103, and a seat member 106 is disposed in the valve chamber 104, on which a valve seat 107 is formed that abuts and separates from a valve element 114 to control the fluid.
- the seat member 106 is pressed upward from below by a pressing member 109 that is screwed into the valve body 101. This prevents fluid from leaking from the upper end of the seat member 106.
- Fig. 5(2) is a partially enlarged view of Fig. 5(1), and some of the parts described in Fig. 5(1) will not be described.
- the fluid passes from the fluid inlet 102 through the inlet passage 102a, passes through the inlet side communication passage 106a and the outlet side communication passage 106b formed in the sheet member 106, and flows out of the fluid outlet 103 through the outlet passage 103a.
- the object of the present invention was made in consideration of the above points, and its purpose is to provide a valve that is less susceptible to leakage between the seat member and the valve body when high-temperature, high-pressure fluid is flowing, etc.
- the present invention (1) which has been made to solve the above problems, is a valve that includes a valve body with a valve chamber that communicates with an inlet passage and an outlet passage for a fluid, an inlet side communicating passage that communicates with the inlet passage, an outlet side communicating passage that communicates with the outlet passage, and a valve seat formed on the periphery of the opening of the outlet side communicating passage, a cylindrical seat member disposed in the valve chamber, and a valve body that can be brought into and out of contact with the valve seat, and a male taper is formed on the valve seat side end of the seat member, and the male taper presses against a female taper formed in the valve chamber to form a seal.
- a male taper that tapers toward the valve seat is formed on the outer periphery of the seat member, and a female taper that tapers and engages with this male taper is formed in the valve chamber, and the seat member and the valve body are engaged by a taper engagement. Therefore, even if a force that reduces the engagement force acts on the seat member, a frictional force acts on the tapered slope, and the force that reduces the engagement force decreases with the sine of the taper angle, so that the sealing performance between the seat member and the valve body is unlikely to decrease. Details will be explained in the explanatory section of Figure 4.
- the present invention (2) is a valve according to the present invention (1), characterized in that the pressing force is generated by the engagement of a female thread engraved on the inner circumferential surface of the valve chamber with a male thread engraved on the outer circumferential surface of the seat member.
- the pressing force is generated by a simple structure in which a female thread engraved on the inner circumferential surface of the valve chamber and a male thread engraved on the outer circumferential surface of the seat member are screwed together, which reduces costs.
- the present invention (3) is the valve of the present invention (1), characterized in that the pressing force is generated by a seat member holder disposed below the seat member.
- the sealing performance can be maintained by applying a pressure to the seat member using a seat member holder.
- the present invention (4) is the valve of the present invention (3), characterized in that a seat retainer male screw is formed on the outer periphery of the seat retainer, and the seat retainer male screw and the female screw are screwed together to generate the pressing force.
- the pressing force is generated by a simple structure in which the male screw on the outer periphery of the seat retainer is screwed into the female screw on the valve body, which reduces costs.
- the present invention provides a valve that is less susceptible to leakage between the seat member and the valve body when high-temperature, high-pressure fluid is flowing through it.
- FIG. 1 is a partial cross-sectional view showing an entire valve according to an embodiment of the present invention.
- FIG. 2 is a partial cross-sectional view showing a part of the valve shown in FIG.
- FIG. 5 is a schematic diagram showing the state of force application etc., comparing a conventional sheet member with the sheet member of the present invention.
- FIG. FIG. 1 is a partial cross-sectional view showing an entire conventional valve.
- valve 1 shows a partial cross-sectional overall view of a valve according to an embodiment of the present invention.
- a valve element 4 attached to the tip of a stem 3 connected to an actuator 2 comes into contact with and separates from a seat member 30 on which a valve seat 31 is formed, to control the flow of a fluid.
- the seat member 30 is disposed inside a valve body 10 in which an inlet passage 11 and an outlet passage 12 are formed.
- the seat member 30 is required to maintain airtightness, abrasion resistance, thermal conductivity, and strength, and may be made of a material such as ordinary carbon or metal.
- a tapered eccentric screw 40 and a cover member 21 and a plug 20 for sealing with a gasket 22 are disposed below the seat member 30 , and the actuator 2 and the valve body 10 are joined by a fixing screw 5 .
- FIG. 2 is an enlarged view of the main parts of the valve in Figure 1. Some parts common to Figure 1 will not be described.
- a valve chamber 13 is formed inside the valve body 10, and a cylindrical seat member 30 is disposed inside the valve chamber 13.
- the valve chamber 13 has a large diameter portion 13a and a small diameter portion 13b.
- the large diameter portion 13a communicates with the inlet passage 11 through an opening formed on the inner circumferential surface, and communicates with the outlet passage 12 through an opening formed on the ceiling surface.
- the small diameter portion 13b has a female thread portion 14 engraved on the inner circumferential surface, and opens to the bottom surface of the valve body 10.
- the seat member 30 is inserted from the bottom surface of the valve body 10, and the male thread 34 engraved on the lower outer periphery of the seat member 30 is screwed into the female thread 14 to be fixed, and the male taper 35 formed on the upper end surface of the seat member is pressed against the female taper 16 formed on the ceiling surface of the large diameter portion 13a to form a seal.
- a tapered eccentric screw 40 screwed into the female thread 14 is disposed below the seat member 30, and the tapered eccentric screw 40 prevents the seat member 30 from loosening.
- the seat member 30 is formed with an inlet side communication passage 32 that opens on the outer circumferential surface of the seat member 30 and communicates with the inlet passage 11, and an outlet side communication passage 33 that opens at the upper end of the seat member 30 and communicates with the outlet passage 12.
- a valve seat 31 is formed on the periphery of the opening of the outlet side communication passage 33.
- the shape of the inlet side communication passage 32 is an ellipse that is long in the axial direction, and a total of four passages are formed, two that open on the left and right sides, and two that open on the front and back sides, as indicated by dotted lines, to provide a structure that can treat even large flow rates of fluid.
- An annular space 15 is formed between the inlet passage 11 and the inlet-side communication passage 32.
- the fluid flows in from the inlet passage 11, then circulates through this annular space 15, passes through the four inlet-side communication passages 32, passes through the outlet-side communication passage 33, and flows out of the outlet passage 12.
- FIG. 3 is a perspective view of the sheet member 30 used in the embodiment of FIGS.
- a male thread 34 is formed on the outer circumferential surface of the lower portion, and this male thread 34 screws into the female thread 14 of the valve body.
- An inlet side communicating passage 32 is formed in the center, and fluid passes through this inlet side communicating passage 32, flows through the outlet side communicating passage 33, and flows out from the outlet passage 12.
- a valve seat 31 is formed on the upper end surface.
- a male taper 35 is formed on the outer periphery of the upper part of the seat member 30, and a male taper abutment surface 36 abuts against the female taper abutment surface 17 (see Figure 2) to form a seal.
- Fig. 4(1) is a partial cross-sectional view of the valve chamber of a conventional valve
- Fig. 4(2) is a partial cross-sectional view of the valve chamber of the valve of the present invention
- Fig. 4(3) is an enlarged view of the area surrounded by the dotted line in Fig. 4(1)
- Fig. 4(4) is an enlarged view of the area surrounded by the dotted line in Fig. 4(2).
- Fig. 4 (4) of the valve of the present application if the load applied to the upper seal portion of the seat member 30 is Ft , when the load Ft is reduced by ⁇ Ft , the load Ft only needs to be reduced by sin ⁇ (where ⁇ is the taper half angle). Also, if the static friction coefficient between the valve body 10 and the seat member 30 is ⁇ , a force of ⁇ Ft sin ⁇ acts upward along the tapered surface, so the force required to maintain the seal between the seat member 30 and the valve body 10 is smaller than in the conventional structure.
- valve of the present invention can be used favorably as a valve that is less susceptible to leakage between the seat member and the valve body when passing high-temperature, high-pressure fluids, etc.
- valve body 11 inlet passage 12 outlet passage 13 valve chamber 14 female threaded portion 15 annular space 16 female taper 17 female taper abutment surface 20 plug 21 cover member 22 gasket 30 seat member 31 valve seat 32 inlet side communicating passage 33 outlet side communicating passage 34 male threaded portion 35 male taper 36 male taper abutment surface 40 tapered eccentric screw
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The purpose of the present invention is to provide a valve that hardly causes leakage between a seat member and a valve body when a high-temperature, high-pressure fluid flows. Provided is a valve comprising: a valve body 10 including a valve chamber 13 communicating with a fluid inlet path 11 and an outlet path 12; a cylindrical seat member 30 including an inlet-side communication path 32 communicating with the inlet path, an outlet-side communication path 33 communicating with the outlet path, and a valve seat 31 formed on a peripheral edge of an opening of the outlet-side communication path, the seat member being disposed in the valve chamber; and a valve disc 4 capable of coming into contact with and separating from the valve seat. A male taper 35 is formed in a valve seat-side end portion of the seat member. The male taper presses a female taper 16 formed in the valve chamber, thereby forming a seal.
Description
この発明は、流体の制御弁に関し、特に、高圧の流体を制御する開閉弁として好適に用いられるバルブに関する。
This invention relates to a fluid control valve, and in particular to a valve that is suitable for use as an on-off valve for controlling high-pressure fluid.
図５（１）に示す特許文献1に記載の高圧流体用のバルブは、流体入口１０２と流体出口１０３を連通する弁室１０４が形成されたバルブボディ１０１を備え、弁室１０４内に弁体１１４と当接離間して流体を制御する弁座１０７が形成されたシート部材１０６が配設されている。シート部材１０６は、バルブボディ１０１と螺合している押さえ部材１０９によって下方から上方に向けて押圧されている。シート部材１０６の上端部からの流体の漏れを防止している。
The valve for high-pressure fluid described in Patent Document 1 shown in Figure 5 (1) has a valve body 101 in which a valve chamber 104 is formed that communicates with a fluid inlet 102 and a fluid outlet 103, and a seat member 106 is disposed in the valve chamber 104, on which a valve seat 107 is formed that abuts and separates from a valve element 114 to control the fluid. The seat member 106 is pressed upward from below by a pressing member 109 that is screwed into the valve body 101. This prevents fluid from leaking from the upper end of the seat member 106.
図５（２）は、図５（１）の一部拡大図である。図５（１）での説明した部分については一部説明を省略する。
流体は、流体入口１０２から入口通路１０２ａを通り、シート部材１０６に形成された入口側連通路１０６ａ及び出口側連通路１０６ｂを通過して、出口通路１０３ａを通って流体出口１０３より流出する。 Fig. 5(2) is a partially enlarged view of Fig. 5(1), and some of the parts described in Fig. 5(1) will not be described.
The fluid passes from the fluid inlet 102 through the inlet passage 102a, passes through the inlet side communication passage 106a and the outlet side communication passage 106b formed in the sheet member 106, and flows out of the fluid outlet 103 through the outlet passage 103a.
流体は、流体入口１０２から入口通路１０２ａを通り、シート部材１０６に形成された入口側連通路１０６ａ及び出口側連通路１０６ｂを通過して、出口通路１０３ａを通って流体出口１０３より流出する。 Fig. 5(2) is a partially enlarged view of Fig. 5(1), and some of the parts described in Fig. 5(1) will not be described.
The fluid passes from the fluid inlet 102 through the inlet passage 102a, passes through the inlet side communication passage 106a and the outlet side communication passage 106b formed in the sheet member 106, and flows out of the fluid outlet 103 through the outlet passage 103a.
しかし、バルブ内部を流す流体の圧力をさらに大幅に上げる場合のほか、流体の温度が高温でしかも高圧の場合、ねじが緩んでシート部材とバルブボディ間の面圧が下がってシート部材当接面からの流体の漏れが発生することが懸念される。
However, if the pressure of the fluid flowing inside the valve is significantly increased, or if the fluid is hot and at high pressure, the screws may come loose, reducing the surface pressure between the seat member and the valve body, which could lead to fluid leakage from the contact surface of the seat member.
本発明の目的は、かかる点に鑑みてなされたものであり、その目的は、高温高圧流体を流す場合等において、シート部材とバルブボディとの間での漏れが起こりにくいバルブを提供することである。
The object of the present invention was made in consideration of the above points, and its purpose is to provide a valve that is less susceptible to leakage between the seat member and the valve body when high-temperature, high-pressure fluid is flowing, etc.
上記課題を解決するためになされた本発明（１）は、流体の入口通路と出口通路を連通する弁室を備えるバルブボディと、前記入口通路と連通する入口側連通路、前記出口通路と連通する出口側連通路、及び、前記出口側連通路の開口の周縁部に形成された弁座を備え、前記弁室に配設される円筒形のシート部材と、前記弁座に対し当接離間可能な弁体とを有するバルブであって、前記シート部材の弁座側端部には雄テーパが形成され、当該雄テーパが前記弁室に形成された雌テーパを押圧しシールを形成するバルブである。
The present invention (1), which has been made to solve the above problems, is a valve that includes a valve body with a valve chamber that communicates with an inlet passage and an outlet passage for a fluid, an inlet side communicating passage that communicates with the inlet passage, an outlet side communicating passage that communicates with the outlet passage, and a valve seat formed on the periphery of the opening of the outlet side communicating passage, a cylindrical seat member disposed in the valve chamber, and a valve body that can be brought into and out of contact with the valve seat, and a male taper is formed on the valve seat side end of the seat member, and the male taper presses against a female taper formed in the valve chamber to form a seal.
本発明（１）では、シート部材の外周には、弁座側が先細の雄テーパが形成され、この雄テーパとテーパ篏合をする雌テーパが弁室に形成されていて、シート部材とバルブボディ間がテーパ篏合で篏合しているので、シート部材に篏合力を下げる力が働いたとしても、テーパ斜面に摩擦力が働き、篏合力を下げる力がテーパ角度の正弦で減少するので、シート部材とバルブボディ間のシール性の低下が起こりにくい。詳しくは、図４の説明部分において説明する。
In the present invention (1), a male taper that tapers toward the valve seat is formed on the outer periphery of the seat member, and a female taper that tapers and engages with this male taper is formed in the valve chamber, and the seat member and the valve body are engaged by a taper engagement. Therefore, even if a force that reduces the engagement force acts on the seat member, a frictional force acts on the tapered slope, and the force that reduces the engagement force decreases with the sine of the taper angle, so that the sealing performance between the seat member and the valve body is unlikely to decrease. Details will be explained in the explanatory section of Figure 4.
本発明（２）は、前記押圧力は、前記弁室の内周面に刻設された雌ねじと、前記シート部材の外周面に刻設された雄ねじとの螺合により発生させられることを特徴とする本発明（１）のバルブである。
The present invention (2) is a valve according to the present invention (1), characterized in that the pressing force is generated by the engagement of a female thread engraved on the inner circumferential surface of the valve chamber with a male thread engraved on the outer circumferential surface of the seat member.
本発明（２）では、押圧力が弁室の内周面に刻設された雌ねじと、シート部材の外周面に刻設された雄ねじとの螺合というシンプルな構造で発生させられるので、コストダウンを図ることができる。
In the present invention (2), the pressing force is generated by a simple structure in which a female thread engraved on the inner circumferential surface of the valve chamber and a male thread engraved on the outer circumferential surface of the seat member are screwed together, which reduces costs.
本発明（３）は、前記押圧力は、前記シート部材の下方に配設されるシート部材押さえにより発生させられることを特徴とする本発明（１）のバルブである。
The present invention (3) is the valve of the present invention (1), characterized in that the pressing force is generated by a seat member holder disposed below the seat member.
本発明（３）では、本発明（２）のようなシート部材とバルブボディ間をねじによる螺合である場合でない場合でも、シート部材押さえによってシート部材に押圧力を加えることによってシール性を保持することができる。
In the present invention (3), even when the seat member and the valve body are not screwed together as in the present invention (2), the sealing performance can be maintained by applying a pressure to the seat member using a seat member holder.
本発明（４）は、前記シート押さえの外周にはシート押さえ雄ねじが形成され、当該シート押さえ雄ねじと前記雌ねじとが螺合して前記押圧力が発生することを特徴とする本発明（３）のバルブである。
The present invention (4) is the valve of the present invention (3), characterized in that a seat retainer male screw is formed on the outer periphery of the seat retainer, and the seat retainer male screw and the female screw are screwed together to generate the pressing force.
本発明（４）では、シート押さえの外周に形成されたシート押さえ雄ねじと、バルブボディに刻設された雌ねじとの螺合というシンプルな構造で押圧力が発生させられるので、コストダウンを図ることができる。
In the present invention (4), the pressing force is generated by a simple structure in which the male screw on the outer periphery of the seat retainer is screwed into the female screw on the valve body, which reduces costs.
本発明によれば、高温高圧流体を流す場合等において、シート部材とバルブボディとの間での漏れが起こりにくいバルブを提供することができる。
The present invention provides a valve that is less susceptible to leakage between the seat member and the valve body when high-temperature, high-pressure fluid is flowing through it.
以下、本発明の実施形態を図面に基づいて詳細に説明する。なお、以下の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。
Below, embodiments of the present invention will be described in detail with reference to the drawings. Note that the following embodiments are essentially preferred examples and are not intended to limit the scope of the present invention, its applications, or its uses.
図1は、本発明の実施形態に係るバルブの部分断面全体図を示す。バルブ1は、アクチュエータ２につながるステム３の先端に取り付けられた弁体４と、弁座３１が形成されたシート部材３０とが当接・離間して流体の流れを制御する。シート部材３０は、入口通路１１と出口通路１２が形成されたバルブボディ１０の内部に配設されている。シート部材３０は気密性の保持、耐摩耗性、熱伝導性、強度が求められ、材質は一般的なカーボンや金属製であってもよい。
シート部材３０の下方にはテーパ偏心ねじ４０及びガスケット２２でシールするための蓋部材２１及び栓体２０が配設されており、アクチュエータ２とバルブボディ１０とは固定用ねじ５で結合されている。 1 shows a partial cross-sectional overall view of a valve according to an embodiment of the present invention. In the valve 1, a valve element 4 attached to the tip of a stem 3 connected to an actuator 2 comes into contact with and separates from a seat member 30 on which a valve seat 31 is formed, to control the flow of a fluid. The seat member 30 is disposed inside a valve body 10 in which an inlet passage 11 and an outlet passage 12 are formed. The seat member 30 is required to maintain airtightness, abrasion resistance, thermal conductivity, and strength, and may be made of a material such as ordinary carbon or metal.
A tapered eccentric screw 40 and a cover member 21 and a plug 20 for sealing with a gasket 22 are disposed below the seat member 30 , and the actuator 2 and the valve body 10 are joined by a fixing screw 5 .
シート部材３０の下方にはテーパ偏心ねじ４０及びガスケット２２でシールするための蓋部材２１及び栓体２０が配設されており、アクチュエータ２とバルブボディ１０とは固定用ねじ５で結合されている。 1 shows a partial cross-sectional overall view of a valve according to an embodiment of the present invention. In the valve 1, a valve element 4 attached to the tip of a stem 3 connected to an actuator 2 comes into contact with and separates from a seat member 30 on which a valve seat 31 is formed, to control the flow of a fluid. The seat member 30 is disposed inside a valve body 10 in which an inlet passage 11 and an outlet passage 12 are formed. The seat member 30 is required to maintain airtightness, abrasion resistance, thermal conductivity, and strength, and may be made of a material such as ordinary carbon or metal.
A tapered eccentric screw 40 and a cover member 21 and a plug 20 for sealing with a gasket 22 are disposed below the seat member 30 , and the actuator 2 and the valve body 10 are joined by a fixing screw 5 .
図２は、図１のバルブの要部の拡大図である。図ｌと共通する箇所は一部説明を省略する。バルブボディ１０には内部に弁室１３が形成され、その内部に円筒形のシート部材３０が配設されている。弁室１３は大径部１３ａと小径部１３ｂとを有する。大径部１３ａは内周面に形成された開口を通じて入口通路１１と連通し、天井面に形成された開口を通じて出口通路１２と連通している。小径部１３ｂは内周面に雌ねじ部１４が刻設され、バルブボディ１０の底面に開口している。シート部材３０はバルブボディ１０の底面から挿入され、シート部材３０の下方外周に刻設された雄ねじ部３４が雌ねじ部１４と螺合して固定され、シート部材の上端面に形成された雄テーパ３５が大径部１３ａの天井面に形成された雌テーパ１６に押圧されシールが形成される
シート部材３０の下方には雌ねじ部１４と螺合したテーパ偏心ねじ４０が配設され、テーパ偏心ねじ４０により緩むことが防止されている。テーパ偏心ねじ４０の下方には、環状のガスケット２２、蓋部材２１及び栓体２０が配設され、ガスケット２２とバルブボディ１０との間にシールが形成され、流体のバルブボディ１０の底面からの外部へのリークを防止している。
シート部材３０には、シート部材３０の外周面に開口した入口側連通路３２が形成され、入口通路１１と連通し、シート部材３０の上方端部に開口した出口側連通路３３が形成され、出口通路１２と連通している。出口側連通路３３の開口の周縁には弁座３１が形成されている。図２に示す実施形態では、入口側連通路３２の形状は軸方向に長い長円形であり、左右に開口する２ヶ所と、正面と裏面に開口し点線で示されている２ヶ所の合計４ヶ所形成され、大流量の流体でも処理できる構造となっている。 Figure 2 is an enlarged view of the main parts of the valve in Figure 1. Some parts common to Figure 1 will not be described. A valve chamber 13 is formed inside the valve body 10, and a cylindrical seat member 30 is disposed inside the valve chamber 13. The valve chamber 13 has a large diameter portion 13a and a small diameter portion 13b. The large diameter portion 13a communicates with the inlet passage 11 through an opening formed on the inner circumferential surface, and communicates with the outlet passage 12 through an opening formed on the ceiling surface. The small diameter portion 13b has a female thread portion 14 engraved on the inner circumferential surface, and opens to the bottom surface of the valve body 10. The seat member 30 is inserted from the bottom surface of the valve body 10, and the male thread 34 engraved on the lower outer periphery of the seat member 30 is screwed into the female thread 14 to be fixed, and the male taper 35 formed on the upper end surface of the seat member is pressed against the female taper 16 formed on the ceiling surface of the large diameter portion 13a to form a seal. A tapered eccentric screw 40 screwed into the female thread 14 is disposed below the seat member 30, and the tapered eccentric screw 40 prevents the seat member 30 from loosening. An annular gasket 22, a cover member 21, and a plug 20 are disposed below the tapered eccentric screw 40, and a seal is formed between the gasket 22 and the valve body 10 to prevent fluid from leaking from the bottom surface of the valve body 10 to the outside.
The seat member 30 is formed with an inlet side communication passage 32 that opens on the outer circumferential surface of the seat member 30 and communicates with the inlet passage 11, and an outlet side communication passage 33 that opens at the upper end of the seat member 30 and communicates with the outlet passage 12. A valve seat 31 is formed on the periphery of the opening of the outlet side communication passage 33. In the embodiment shown in Fig. 2, the shape of the inlet side communication passage 32 is an ellipse that is long in the axial direction, and a total of four passages are formed, two that open on the left and right sides, and two that open on the front and back sides, as indicated by dotted lines, to provide a structure that can treat even large flow rates of fluid.
シート部材３０の下方には雌ねじ部１４と螺合したテーパ偏心ねじ４０が配設され、テーパ偏心ねじ４０により緩むことが防止されている。テーパ偏心ねじ４０の下方には、環状のガスケット２２、蓋部材２１及び栓体２０が配設され、ガスケット２２とバルブボディ１０との間にシールが形成され、流体のバルブボディ１０の底面からの外部へのリークを防止している。
シート部材３０には、シート部材３０の外周面に開口した入口側連通路３２が形成され、入口通路１１と連通し、シート部材３０の上方端部に開口した出口側連通路３３が形成され、出口通路１２と連通している。出口側連通路３３の開口の周縁には弁座３１が形成されている。図２に示す実施形態では、入口側連通路３２の形状は軸方向に長い長円形であり、左右に開口する２ヶ所と、正面と裏面に開口し点線で示されている２ヶ所の合計４ヶ所形成され、大流量の流体でも処理できる構造となっている。 Figure 2 is an enlarged view of the main parts of the valve in Figure 1. Some parts common to Figure 1 will not be described. A valve chamber 13 is formed inside the valve body 10, and a cylindrical seat member 30 is disposed inside the valve chamber 13. The valve chamber 13 has a large diameter portion 13a and a small diameter portion 13b. The large diameter portion 13a communicates with the inlet passage 11 through an opening formed on the inner circumferential surface, and communicates with the outlet passage 12 through an opening formed on the ceiling surface. The small diameter portion 13b has a female thread portion 14 engraved on the inner circumferential surface, and opens to the bottom surface of the valve body 10. The seat member 30 is inserted from the bottom surface of the valve body 10, and the male thread 34 engraved on the lower outer periphery of the seat member 30 is screwed into the female thread 14 to be fixed, and the male taper 35 formed on the upper end surface of the seat member is pressed against the female taper 16 formed on the ceiling surface of the large diameter portion 13a to form a seal. A tapered eccentric screw 40 screwed into the female thread 14 is disposed below the seat member 30, and the tapered eccentric screw 40 prevents the seat member 30 from loosening. An annular gasket 22, a cover member 21, and a plug 20 are disposed below the tapered eccentric screw 40, and a seal is formed between the gasket 22 and the valve body 10 to prevent fluid from leaking from the bottom surface of the valve body 10 to the outside.
The seat member 30 is formed with an inlet side communication passage 32 that opens on the outer circumferential surface of the seat member 30 and communicates with the inlet passage 11, and an outlet side communication passage 33 that opens at the upper end of the seat member 30 and communicates with the outlet passage 12. A valve seat 31 is formed on the periphery of the opening of the outlet side communication passage 33. In the embodiment shown in Fig. 2, the shape of the inlet side communication passage 32 is an ellipse that is long in the axial direction, and a total of four passages are formed, two that open on the left and right sides, and two that open on the front and back sides, as indicated by dotted lines, to provide a structure that can treat even large flow rates of fluid.
入口通路１１と入口側連通路３２との間には環状空間１５が形成されている。流体は、入口通路１１から流入し、その後、この環状空間１５を還流して４ヶ所の入口側連通路３２を通過して、出口側連通路３３を通り、出口通路１２から流出する。
An annular space 15 is formed between the inlet passage 11 and the inlet-side communication passage 32. The fluid flows in from the inlet passage 11, then circulates through this annular space 15, passes through the four inlet-side communication passages 32, passes through the outlet-side communication passage 33, and flows out of the outlet passage 12.
図３は、図１及び図２の実施形態で用いられているシート部材３０の斜視図である。
下部の外周面には雄ねじ部３４が刻設され、この雄ねじ部３４がバルブボディ雌ねじ１４と螺合する。
中央部には入口側連通路３２が形成され、この入口側連通路３２を流体が通過して出口側連通路３３を流れ、出口通路１２から流出する。上端面には弁座３１が形成されている。シート部材３０の上部の外周には雄テーパ３５が形成され、雄テーパ当接面３６が雌テーパ当接面１７（図２参照）と当接してシールが形成される。 FIG. 3 is a perspective view of the sheet member 30 used in the embodiment of FIGS.
A male thread 34 is formed on the outer circumferential surface of the lower portion, and this male thread 34 screws into the female thread 14 of the valve body.
An inlet side communicating passage 32 is formed in the center, and fluid passes through this inlet side communicating passage 32, flows through the outlet side communicating passage 33, and flows out from the outlet passage 12. A valve seat 31 is formed on the upper end surface. A male taper 35 is formed on the outer periphery of the upper part of the seat member 30, and a male taper abutment surface 36 abuts against the female taper abutment surface 17 (see Figure 2) to form a seal.
下部の外周面には雄ねじ部３４が刻設され、この雄ねじ部３４がバルブボディ雌ねじ１４と螺合する。
中央部には入口側連通路３２が形成され、この入口側連通路３２を流体が通過して出口側連通路３３を流れ、出口通路１２から流出する。上端面には弁座３１が形成されている。シート部材３０の上部の外周には雄テーパ３５が形成され、雄テーパ当接面３６が雌テーパ当接面１７（図２参照）と当接してシールが形成される。 FIG. 3 is a perspective view of the sheet member 30 used in the embodiment of FIGS.
A male thread 34 is formed on the outer circumferential surface of the lower portion, and this male thread 34 screws into the female thread 14 of the valve body.
An inlet side communicating passage 32 is formed in the center, and fluid passes through this inlet side communicating passage 32, flows through the outlet side communicating passage 33, and flows out from the outlet passage 12. A valve seat 31 is formed on the upper end surface. A male taper 35 is formed on the outer periphery of the upper part of the seat member 30, and a male taper abutment surface 36 abuts against the female taper abutment surface 17 (see Figure 2) to form a seal.
図４（１）は、従来バルブの弁室部分の部分断面図で、図４（２）は本願バルブの弁室部分の部分断面図である。図４（３）は図４（１）の点線で囲った部分の拡大図で、図４（４）は図４（２）の点線で囲った部分の拡大図である。
Fig. 4(1) is a partial cross-sectional view of the valve chamber of a conventional valve, and Fig. 4(2) is a partial cross-sectional view of the valve chamber of the valve of the present invention. Fig. 4(3) is an enlarged view of the area surrounded by the dotted line in Fig. 4(1), and Fig. 4(4) is an enlarged view of the area surrounded by the dotted line in Fig. 4(2).
従来のバルブの図４（３）において、シート部材の上側のシール部分にかかる荷重をＦｆとすると、ねじ部のゆるみ、温度変化の影響等により、荷重ＦｆがδＦｆだけ小さくなると、この減少分はそのまま１００％シール面の面圧減少となる。
In FIG. 4(3) of the conventional valve, if the load applied to the upper seal portion of the seat member is Ff , when the load Ff is reduced by δFf due to loosening of the threads, the effects of temperature change, etc., this reduction will directly result in a 100% reduction in the surface pressure of the seal surface.
一方、本願のバルブの図４（４）において、シート部材３０の上側のシール部分にかかる荷重をＦｔとすると、荷重ＦｔがδＦｔだけ小さくなると、この減少分に対してｓｉｎθだけ小さくなった大きさのみの減少で済む（ここでθはテーパ半角です）。また、バルブボディ１０とシート部材３０との間の静摩擦係数をμとするとμＦｔｓｉｎθの力がテーパ面に沿った上方に働くため、従来の構造と比べてシート部材３０とバルブボディ１０とのシールを維持するために必要な力が小さくなる。
On the other hand, in Fig. 4 (4) of the valve of the present application, if the load applied to the upper seal portion of the seat member 30 is Ft , when the load Ft is reduced by δFt , the load Ft only needs to be reduced by sinθ (where θ is the taper half angle). Also, if the static friction coefficient between the valve body 10 and the seat member 30 is μ, a force of μFt sinθ acts upward along the tapered surface, so the force required to maintain the seal between the seat member 30 and the valve body 10 is smaller than in the conventional structure.
以上説明したように、本発明のバルブは、高温高圧流体を流す場合等において、シート部材とバルブボディとの間での漏れが起こりにくいバルブとして好適に用いることができる。
As explained above, the valve of the present invention can be used favorably as a valve that is less susceptible to leakage between the seat member and the valve body when passing high-temperature, high-pressure fluids, etc.
１ バルブ
２ アクチュエータ
３ ステム
４ 弁体
５ 固定用ねじ
１０ バルブボディ
１１ 入口通路
１２ 出口通路
１３ 弁室
１４ 雌ねじ部
１５ 環状空間
１６ 雌テーパ
１７ 雌テーパ当接面
２０ 栓体
２１ 蓋部材
２２ ガスケット
３０ シート部材
３１ 弁座
３２ 入口側連通路
３３ 出口側連通路
３４ 雄ねじ部
３５ 雄テーパ
３６ 雄テーパ当接面
４０ テーパ偏心ねじ REFERENCE SIGNS LIST 1 valve 2 actuator 3 stem 4 valve element 5 fixing screw 10 valve body 11 inlet passage 12 outlet passage 13 valve chamber 14 female threaded portion 15 annular space 16 female taper 17 female taper abutment surface 20 plug 21 cover member 22 gasket 30 seat member 31 valve seat 32 inlet side communicating passage 33 outlet side communicating passage 34 male threaded portion 35 male taper 36 male taper abutment surface 40 tapered eccentric screw
２ アクチュエータ
３ ステム
４ 弁体
５ 固定用ねじ
１０ バルブボディ
１１ 入口通路
１２ 出口通路
１３ 弁室
１４ 雌ねじ部
１５ 環状空間
１６ 雌テーパ
１７ 雌テーパ当接面
２０ 栓体
２１ 蓋部材
２２ ガスケット
３０ シート部材
３１ 弁座
３２ 入口側連通路
３３ 出口側連通路
３４ 雄ねじ部
３５ 雄テーパ
３６ 雄テーパ当接面
４０ テーパ偏心ねじ REFERENCE SIGNS LIST 1 valve 2 actuator 3 stem 4 valve element 5 fixing screw 10 valve body 11 inlet passage 12 outlet passage 13 valve chamber 14 female threaded portion 15 annular space 16 female taper 17 female taper abutment surface 20 plug 21 cover member 22 gasket 30 seat member 31 valve seat 32 inlet side communicating passage 33 outlet side communicating passage 34 male threaded portion 35 male taper 36 male taper abutment surface 40 tapered eccentric screw
Claims (4)
- 流体の入口通路と出口通路を連通する弁室を備えるバルブボディと、
前記入口通路と連通する入口側連通路、前記出口通路と連通する出口側連通路、及び、前記出口側連通路の開口の周縁部に形成された弁座を備え、前記弁室に配設される円筒形のシート部材と、
前記弁座に対し当接離間可能な弁体とを有するバルブであって、
前記シート部材の弁座側端部には雄テーパが形成され、当該雄テーパが前記弁室に形成された雌テーパを押圧しシールを形成するバルブ。 a valve body having a valve chamber communicating with an inlet passage and an outlet passage for a fluid;
an inlet side communicating passage communicating with the inlet passage, an outlet side communicating passage communicating with the outlet passage, and a valve seat formed on a periphery of an opening of the outlet side communicating passage, and a cylindrical seat member disposed in the valve chamber;
a valve body that is movable toward and away from the valve seat,
A male taper is formed on the valve seat side end of the seat member, and the male taper presses against a female taper formed in the valve chamber to form a seal. - 前記弁室の内周面に刻設された雌ねじ部と、前記シート部材の外周面に刻設された雄ねじ部が螺合することを特徴とする請求項１に記載のバルブ。 The valve according to claim 1, characterized in that a female thread portion engraved on the inner peripheral surface of the valve chamber and a male thread portion engraved on the outer peripheral surface of the seat member are screwed together.
- 前記シート部材の弁座と反対側の端部側にシート部材押さえが配設され、前記シート部材押さえが前記シート部材を押圧することを特徴とする請求項１に記載のバルブ。 The valve described in claim 1, characterized in that a seat member holder is disposed on the end side of the seat member opposite the valve seat, and the seat member holder presses the seat member.
- 前記シート押さえと前記弁室の内周面に刻設された雌ねじ部とが螺合することを特徴とする請求項３に記載のバルブ。 The valve according to claim 3, characterized in that the seat retainer and a female thread portion engraved on the inner peripheral surface of the valve chamber are screwed together.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022191913 | 2022-11-30 | ||
| JP2022-191913 | 2022-11-30 |
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| Publication Number | Publication Date |
|---|---|
| WO2024116502A1 true WO2024116502A1 (en) | 2024-06-06 |
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ID=91323292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/031082 WO2024116502A1 (en) | 2022-11-30 | 2023-08-29 | Valve |
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| Country | Link |
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| WO (1) | WO2024116502A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899562U (en) * | 1981-12-28 | 1983-07-06 | コスモ工機株式会社 | Water faucet |
| JPS59110474U (en) * | 1983-01-18 | 1984-07-25 | 株式会社山武 | valve seat |
| JP2016061418A (en) * | 2014-09-20 | 2016-04-25 | 株式会社スギノマシン | Fluid coupling |
| JP2019190516A (en) * | 2018-04-20 | 2019-10-31 | 株式会社ジェイテクト | Valve gear |
| JP2022006996A (en) * | 2020-06-25 | 2022-01-13 | 株式会社フジキン | Flow regulating valve |
-
2023
- 2023-08-29 WO PCT/JP2023/031082 patent/WO2024116502A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899562U (en) * | 1981-12-28 | 1983-07-06 | コスモ工機株式会社 | Water faucet |
| JPS59110474U (en) * | 1983-01-18 | 1984-07-25 | 株式会社山武 | valve seat |
| JP2016061418A (en) * | 2014-09-20 | 2016-04-25 | 株式会社スギノマシン | Fluid coupling |
| JP2019190516A (en) * | 2018-04-20 | 2019-10-31 | 株式会社ジェイテクト | Valve gear |
| JP2022006996A (en) * | 2020-06-25 | 2022-01-13 | 株式会社フジキン | Flow regulating valve |
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