WO2016063582A1 - Valve mechanism - Google Patents

Valve mechanism Download PDF

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Publication number
WO2016063582A1
WO2016063582A1 PCT/JP2015/069754 JP2015069754W WO2016063582A1 WO 2016063582 A1 WO2016063582 A1 WO 2016063582A1 JP 2015069754 W JP2015069754 W JP 2015069754W WO 2016063582 A1 WO2016063582 A1 WO 2016063582A1
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WO
WIPO (PCT)
Prior art keywords
seal member
valve
valve body
shaft portion
head
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Application number
PCT/JP2015/069754
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French (fr)
Japanese (ja)
Inventor
公平 多屋
初男 森
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株式会社Ihi
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Publication of WO2016063582A1 publication Critical patent/WO2016063582A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details

Definitions

  • the present disclosure relates to a valve mechanism.
  • the present application claims priority based on Japanese Patent Application No. 2014-213570 filed in Japan on October 20, 2014, the contents of which are incorporated herein by reference.
  • Patent Document 1 discloses a pneumatically operated valve used for a rocket engine or the like used in space development.
  • This pneumatically operated valve includes a seal member having an opening through which a fluid (for example, a propellant) is discharged, and a poppet head (valve element) that comes into contact with the seal member.
  • a fluid for example, a propellant
  • a poppet head valve element
  • the pneumatically operated valve as described above is used in a very wide temperature range, for example, from a high temperature environment of about several tens of degrees Celsius to a cryogenic environment close to minus 200 degrees Celsius. For this reason, the thermal deformation of the seal member or the like tends to increase and the aging deterioration tends to be accelerated. Moreover, there is a tendency that aging deterioration is accelerated by constantly applying vibration.
  • the poppet head may be biased against the seal member, and the pressing force may be locally excessive. As a result, problems such as the occurrence of creep and the like shorten the life of the sealing member and increase the frequency of maintenance.
  • This disclosure is made in view of the above-described problems, and an object of the present disclosure is to suppress the occurrence of creep in a seal member or the like in a valve mechanism that closes a valve body by contacting the seal member.
  • a first aspect according to the present disclosure includes a seal member having an opening for discharging a fluid, a valve body that closes the opening by contacting the seal member, and the valve A valve mechanism including a shaft portion to which a body is attached and moved toward the seal member, the valve body tilting mechanism supporting the valve body so as to be tiltable with respect to a moving direction of the shaft portion.
  • the valve body is supported by the valve body tilting mechanism so as to be tiltable with respect to the moving direction of the shaft portion. For this reason, even when the seal member or the valve body is deformed due to aging or the like, when the valve body is brought into contact with the seal member, the valve body tilts and is most stable with respect to the seal member. It is aligned so that it is in the position. As a result, it is possible to prevent the valve body from being in contact with the seal member in a biased manner, and to prevent the pressing force of the valve body from being applied to the seal member locally. Therefore, according to the present disclosure, it is possible to suppress the occurrence of creep in the seal member or the like in the valve mechanism that opens and closes by bringing the valve body into contact with the seal member.
  • FIG. 1 is a cross-sectional view showing a configuration of a pneumatically operated valve 1 (valve mechanism) of the present embodiment.
  • the left half shows the closed state of the pneumatically operated valve 1
  • the right half shows the opened state of the pneumatically operated valve 1.
  • the posture of the pneumatically operated valve 1 is arbitrary, in the following description, for the sake of convenience, the upper side of FIG. 1 is referred to as the upper side, and the lower side of FIG.
  • the pneumatically operated valve 1 of this embodiment is a propellant valve for controlling the supply of liquid propellant for a rocket engine.
  • a casing 2, a piston 3, and a first disc spring 4, a working gas supply device 5, a first bellows 6, a shaft portion 7, a second disc spring 8, a poppet head 9 (valve element), a seal member 10, a spherical bearing mechanism 11, Two bellows 12 and a tilt restricting portion 13 are provided.
  • the casing 2 includes a cylinder 2a, a body 2b, a head 2c, a first bolt 2d, a first spring 2e, a second bolt 2f, and a second spring 2g.
  • the cylinder 2a is a part that houses the piston 3, and is connected to the upper part of the body 2b.
  • the body 2b has a piston 3 connected to the upper part and a head 2c connected to the lower part.
  • the body 2b is a cylindrical portion whose inside is a flow path 2b1, and has a fluid inlet 2b2.
  • the head 2c communicates with the inside of the body 2b and has a fluid outlet 2c1 for discharging the liquid propellant.
  • the cylinder 2a and the body 2b, and the body 2b and the head 2c are connected through a slight gap. These gaps are spaces for allowing deformation when the cylinder 2a, the body 2b, and the head 2c are thermally deformed. These gaps are sealed by other members, thereby preventing the liquid propellant and the working gas from leaking out.
  • the first bolt 2d is inserted from the cylinder 2a side and screwed with the body 2b to fasten the cylinder 2a and the body 2b.
  • the first spring 2e is a disc spring inserted between the head of the first bolt 2d and the cylinder 2a.
  • the cylinder 2a and the body 2b are heated by urging the cylinder 2a against the body 2b.
  • the second bolt 2f is inserted from the head 2c side and is screwed to the body 2b to fasten the body 2b and the head 2c.
  • the second spring 2g is a disc spring interposed between the head of the second bolt 2f and the head 2c, and the body 2b and the head 2c are heated by urging the head 2c against the body 2b. Even if it is deformed, rattling is prevented.
  • the piston 3 is accommodated in the cylinder 2a and is moved up and down by the working gas supplied from the working gas supply device 5.
  • the first disc spring 4 is inserted between the cylinder 2a and the piston 3, and biases the piston 3 downward. As a result, the piston 3 is always positioned below when the working gas is not supplied from the working gas supply device 5.
  • the operating gas supply device 5 includes a closing operation gas supply device 5a for supplying the operating gas to the closing operation pressure chamber 2a1 in which the upper end surface of the piston 3 is exposed, and an opening operation in which the lower end surface of the piston 3 is exposed.
  • An opening operation gas supply device 5b for supplying an operation gas to the pressure chamber 2a2 is provided.
  • the first bellows 6 has an upper end fixed to the piston 3 and a lower end fixed to the body 2b, and isolates the inside of the cylinder 2a into a closing operation pressure chamber 2a1 and a closing operation gas supply device 5a.
  • the shaft portion 7 is a rod member that is connected to the lower portion of the piston 3 via the second disc spring 8 and extends downward from the piston 3.
  • a poppet head 9 is attached to the tip (lower end portion). It has been.
  • Such a shaft portion 7 is moved in the vertical direction by the vertical movement of the piston 3. Since the seal member 10 is disposed below the shaft portion 7, the shaft portion 7 is moved toward the seal member 10 by the movement of the piston 3.
  • the second disc spring 8 is interposed between the shaft portion 7 and the piston 3, and biases the shaft portion 7 downward when the poppet head 9 is in contact with the seal member 10. As a result, the poppet head 9 is pressed against the seal member 10. That is, the urging force of the second disc spring 8 defines the pressing force of the poppet head 9 against the seal member 10.
  • FIGS. 2A and 2B are partial enlarged views including the poppet head 9 and the seal member 10, and FIG. 2A shows a state in which the poppet head 9 is in contact with the seal member 10, and FIG. 9 shows a separated state.
  • the poppet head 9 has a substantially hemispherical shape with a lower portion curved in a spherical shape, and is formed of, for example, a nickel-base superalloy.
  • the poppet head 9 has a larger diameter than an opening 10a (described later) of the seal member 10 as viewed from above, and closes the opening 10a by contacting the seal member 10.
  • the seal member 10 is a resin member provided with an opening 10a for discharging fluid, and is sandwiched between the body 2b and the head 2c so that the opening 10a communicates with the fluid outlet 2c1 of the head 2c.
  • a tapered surface 10b is provided on the peripheral surface of the opening 10a so that the opening 10a is narrowed downward.
  • the tapered surface 10b is a position where the poppet head 9 abutted from above contacts the seal member 10 with a uniform pressing force over the entire circumference (for example, the center of the opening 10a when viewed from above). And the center of the poppet head 9 are overlapped, and the poppet head 9 abutting against the seal member 10 is guided to a stable position).
  • Such a sealing member 10 can be formed using resin, such as PCTFE (polychlorotrifluoroethylene), for example.
  • FIG. 3 is a partially enlarged view including the spherical bearing mechanism 11.
  • the spherical bearing mechanism 11 includes an inner ring 11a, an outer ring 11b, and a retaining ring 11c.
  • the inner ring 11a is an annular member having an opening through which the outer peripheral surface is spherical and the shaft portion 7 is inserted.
  • the inner ring 11a is supported by being fitted to the outer ring 11b. Further, the inner ring 11a is in contact with the outer ring 11b with its outer peripheral surface as a sliding surface, and can be tilted with respect to the outer ring 11b.
  • the outer ring 11b is fixed to the body 2b by a retaining ring 11c.
  • the inner ring 11a can tilt with respect to the outer ring 11b, such a spherical bearing mechanism 11 supports the shaft portion 7 inserted through the inner ring 11a so as to tilt.
  • the inner ring 11a surrounds the shaft portion 7 with a very small gap, and the shaft portion 7 can be moved in the vertical direction.
  • wheel 11a may contact
  • the diameter, the length in the extending direction of the shaft portion 7 of the inner ring 11a, and the like are set. Specifically, the contact area between the inner ring 11a and the shaft portion 7 is increased so that the frictional force between the shaft portion 7 and the inner ring 11a does not become excessively large to the extent that the smooth movement of the shaft portion 7 is hindered. It is necessary to secure.
  • the friction coefficient of the inner ring 11a and the shaft part 7, the inner diameter of the inner ring 11a, the outer diameter of the shaft part 7, the length of the inner ring 11a in the extending direction of the shaft part 7 and the like are set so as to ensure such a contact area. Is done.
  • the second bellows 12 is disposed inside the body 2b so as to surround the shaft portion 7.
  • Such a second bellows 12 isolates the space in which the spherical bearing mechanism 11 and the connecting portion between the shaft portion 7 and the piston 3 are arranged from the flow path 2b1 formed inside the body 2b.
  • the second bellows 12 can prevent the fluid supplied to the flow path 2b1 of the body 2b from flowing into the cylinder 2a through the spherical bearing mechanism 11 or the connecting portion between the shaft portion 7 and the piston 3.
  • FIG. 4A and 4B are partial enlarged views including the tilt restricting portion 13.
  • FIG. 4A shows a state where the poppet head 9 is separated from the seal member 10
  • FIG. 4B shows a state where the poppet head 9 is in contact with the seal member 10. Is shown.
  • the tilt restricting portion 13 is provided in an upper portion inside the cylinder 2a, and includes a guide portion 13a, a thick portion 13b, and a thin portion 13c.
  • the guide portion 13a is a protrusion that hangs downward from the ceiling of the cylinder 2a.
  • the thick part 13b and the thin part 13c are provided in the upper part of the piston 3, and the thin part 13c is provided above the thick part 13b.
  • the thick portion 13b is a portion formed thicker than the thin portion 13c so as to bulge toward the center of the piston 3 rather than the thin portion 13c.
  • the thick portion 13b slidably contacts the outer peripheral surface of the guide portion 13a when the poppet head 9 is separated from the seal member 10, that is, when the piston 3 is raised.
  • the thick portion 13b is formed at a position and thickness that does not contact the guide portion 13a when the poppet head 9 is in contact with the seal member 10, that is, when the piston 3 is lowered. Yes.
  • the piston 3 when the operating gas is supplied from the closed operating gas supply device 5a to the closed operating pressure chamber 2a1, the piston 3 is pushed downward. The shaft portion 7 is lowered and the poppet head 9 comes into contact with the seal member 10. As a result, the opening 10a of the seal member 10 is closed, and the fluid is not discharged from the fluid outlet 2c1.
  • the piston 3 when the operating gas is supplied from the gas supply device 5b for opening operation to the pressure chamber 2a2 for opening operation, the piston 3 is pushed upward, the shaft portion 7 is raised, and the poppet head 9 is separated from the seal member 10. To do. Thereby, the opening 10a of the seal member 10 is opened, and the fluid is discharged from the fluid outlet 2c1.
  • the poppet head 9 is supported by the spherical bearing mechanism 11 so as to be tiltable with respect to the moving direction of the shaft portion 7. For this reason, according to the pneumatically operated valve 1 of the present embodiment, even when the seal member 10 is deformed due to deterioration over time or the like, the poppet head 9 abuts and tilts against the seal member 10, The poppet head 9 is automatically aligned so that it is in the most stable position with respect to the seal member 10. As a result, it is possible to suppress the poppet head 9 from abutting against the seal member 10 in a biased manner, and to prevent the pressing force of the poppet head 9 against the seal member 10 from being locally excessive. .
  • the opening 10a is formed in a funnel shape having a tapered surface 10b that narrows downward, so that the substantially hemispherical poppet head 9 is supported so as to be able to contact and tilt with the seal member 10, and the shaft portion 7 shifts can be eliminated.
  • a spherical bearing mechanism 11 that supports the shaft portion 7 so as to be tiltable and movable in the axial direction is used as the valve body tilting mechanism of the present disclosure. According to the pneumatically operated valve 1 of this embodiment, it is possible to align the poppet head 9 with a simple mechanism.
  • the pneumatically operated valve 1 of the present embodiment includes a tilt restricting portion 13 that restricts the tilt of the shaft portion 7 when the poppet head 9 is separated from the seal member 10. For this reason, when the poppet head 9 is separated from the seal member 10, the shaft portion 7 can be prevented from vibrating.
  • a coil spring 20 (elastic member) interposed between the shaft portion 7 and the poppet head 9 is provided, and this coil spring 20 is used as the valve body tilting mechanism of the present disclosure. It is also possible. In such a case, only the poppet head 9 can be tilted without tilting the shaft portion 7.
  • the shaft portion 7 has a structure including a head 7a to which the poppet head 9 is fixed and a base portion 7b connected to the head 7a via a spherical bearing mechanism 30.
  • the mechanism 30 may be the valve body tilting mechanism of the present disclosure.
  • the valve body tilting mechanism can be formed inside the shaft portion 7, and by manufacturing the shaft portion 7, the valve body tilting mechanism can be provided at the same time.
  • the seal member 10 is made of resin.
  • the present disclosure is not limited to this, and the poppet head 9 can be formed of resin, and the seal member 10 can be formed of metal.
  • valve mechanism of the present disclosure is applied to the pneumatically operated valve 1 .
  • present disclosure is not limited to this, and is suitable for a valve mechanism used in a wide temperature range, a valve mechanism used in an environment with vibration, and the like.
  • valve mechanism of the present disclosure in which the valve body is closed by contacting the seal member, it is possible to suppress the occurrence of creep in the seal member or the like.
  • valve mechanism 1 Pneumatically operated valve (valve mechanism) 2 Casing 2a Cylinder 2a1 Pressure chamber 2a2 for closing operation Pressure chamber 2b for opening operation Body 2b1 Flow path 2b2 Fluid inlet 2c Head 2c1 Fluid outlet 2d First bolt 2e First spring 2f Second bolt 2g Second spring 3 Piston 4 First Belleville spring 5 operating gas supply device 5a closing operation gas supply device 5b opening operation gas supply device 6 first bellows 7 shaft portion 7a head 7b base portion 8 second disc spring 9 poppet head (valve element) DESCRIPTION OF SYMBOLS 10 Seal member 10a Opening 10b Tapered surface 11, 30 Spherical bearing mechanism (valve body tilting mechanism) 11a Inner ring 11b Outer ring 11c Retaining ring 12 Second bellows 13 Tilt restricting part 13a Guide part 13b Thick part 13c Thin part 20 Coil spring (elastic member, valve body tilting mechanism)

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

This valve mechanism (1) comprises: a seal member (10) having an opening (10a) for discharging fluid; a valve body (9) coming into contact with the seal member (10) to close the opening (10a); a shaft section (7) adapted to be moved toward the seal member (9) and having the valve body (9) mounted thereto; and a valve body tilt mechanism (11, 20, 30) for supporting the valve body (9) so that the valve body (9) can tilt relative to the movement direction of the shaft section (7).

Description

バルブ機構Valve mechanism
 本開示は、バルブ機構に関する。
 本願は、2014年10月20日に、日本に出願された特願2014-213570号に基づき優先権を主張し、その内容をここに援用する。
The present disclosure relates to a valve mechanism.
The present application claims priority based on Japanese Patent Application No. 2014-213570 filed in Japan on October 20, 2014, the contents of which are incorporated herein by reference.
 例えば、特許文献1には、宇宙開発において用いられるロケットエンジン等に用いられる空圧作動バルブが開示されている。この空圧作動バルブは、流体(例えば推進剤)が吐出される開口を有するシール部材と、シール部材に対して当接されるポペットヘッド(弁体)とを備えている。このような空圧作動バルブにおいては、シール部材に対してポペットヘッドが押圧されているときには、上記開口が閉塞されて流体の吐出が停止される。一方、シール部材に対してポペットヘッドが離間しているときには、上記開口が開放されて流体が吐出される。 For example, Patent Document 1 discloses a pneumatically operated valve used for a rocket engine or the like used in space development. This pneumatically operated valve includes a seal member having an opening through which a fluid (for example, a propellant) is discharged, and a poppet head (valve element) that comes into contact with the seal member. In such a pneumatically operated valve, when the poppet head is pressed against the seal member, the opening is closed and the discharge of fluid is stopped. On the other hand, when the poppet head is separated from the seal member, the opening is opened and fluid is discharged.
日本国特開2004-301318号公報Japanese Unexamined Patent Publication No. 2004-301318
 しかしながら、上述のような空圧作動バルブは、例えば数十℃程度の高温環境からマイナス200℃近い極低温環境まで、極めて広い温度範囲で用いられる。このため、シール部材等の熱変形が大きくなり経年劣化が早まる傾向にある。また、常に振動が加わることによっても経年劣化が早まる傾向にある。このようにシール部材等が経年劣化した場合や機械的誤差があると、ポペットヘッドのシール部材への当たりに偏りが生じ、押圧力が局所的に過大となる可能性がある。この結果、クリープが生じる等によりシール部材等の寿命が短くなり、メンテナンスの頻度が増加する等の問題が生じる。 However, the pneumatically operated valve as described above is used in a very wide temperature range, for example, from a high temperature environment of about several tens of degrees Celsius to a cryogenic environment close to minus 200 degrees Celsius. For this reason, the thermal deformation of the seal member or the like tends to increase and the aging deterioration tends to be accelerated. Moreover, there is a tendency that aging deterioration is accelerated by constantly applying vibration. When the seal member or the like deteriorates with age or has a mechanical error as described above, the poppet head may be biased against the seal member, and the pressing force may be locally excessive. As a result, problems such as the occurrence of creep and the like shorten the life of the sealing member and increase the frequency of maintenance.
 なお、このような問題は、シール部材等の経年劣化に係る時間の長短はあるものの、ロケットエンジン等に搭載される空圧作動バルブに限られない。上記の問題は、弁体をシール部材に対して当接させることで閉塞を行うバルブ機構全体において生じる。 Note that such a problem is not limited to a pneumatically operated valve mounted on a rocket engine or the like, although the time required for aging of the seal member or the like is long or short. The above problem occurs in the entire valve mechanism that closes by bringing the valve body into contact with the seal member.
 本開示は、上述する問題点に鑑みてなされ、弁体をシール部材に当接させることによって閉塞を行うバルブ機構において、シール部材等にクリープが生じることを抑制することを目的とする。 This disclosure is made in view of the above-described problems, and an object of the present disclosure is to suppress the occurrence of creep in a seal member or the like in a valve mechanism that closes a valve body by contacting the seal member.
 上記課題を解決するために、本開示に係る第1の態様は、流体を吐出する開口を有するシール部材と、上記シール部材と当接されることで上記開口を閉塞する弁体と、上記弁体が取り付けられると共に上記シール部材に向けて移動される軸部とを備えるバルブ機構であって、上記弁体を上記軸部の移動方向に対して傾動可能に支持する弁体傾動機構を備える。 In order to solve the above problems, a first aspect according to the present disclosure includes a seal member having an opening for discharging a fluid, a valve body that closes the opening by contacting the seal member, and the valve A valve mechanism including a shaft portion to which a body is attached and moved toward the seal member, the valve body tilting mechanism supporting the valve body so as to be tiltable with respect to a moving direction of the shaft portion.
 本開示のバルブ機構によれば、弁体傾動機構によって弁体が軸部の移動方向に対して傾動可能に支持されている。このため、経年劣化等によってシール部材あるいは弁体が変形したような場合であっても、弁体をシール部材に対して当接させるときに、弁体が傾動してシール部材に対して最も安定した位置となるように調芯される。この結果、弁体がシール部材に対して偏って当接することを抑制することができ、弁体のシール部材への押圧力が局所的に過大となることを防止することができる。したがって、本開示によれば、弁体をシール部材に当接させることによって開閉を行うバルブ機構において、シール部材等にクリープが生じることを抑制することができる。 According to the valve mechanism of the present disclosure, the valve body is supported by the valve body tilting mechanism so as to be tiltable with respect to the moving direction of the shaft portion. For this reason, even when the seal member or the valve body is deformed due to aging or the like, when the valve body is brought into contact with the seal member, the valve body tilts and is most stable with respect to the seal member. It is aligned so that it is in the position. As a result, it is possible to prevent the valve body from being in contact with the seal member in a biased manner, and to prevent the pressing force of the valve body from being applied to the seal member locally. Therefore, according to the present disclosure, it is possible to suppress the occurrence of creep in the seal member or the like in the valve mechanism that opens and closes by bringing the valve body into contact with the seal member.
本開示の一実施形態における空圧作動バルブの構成を示す断面図である。It is sectional drawing which shows the structure of the pneumatically actuated valve in one Embodiment of this indication. 本開示の一実施形態における空圧作動バルブが備えるポペットヘッド及びシール部材を含む、シール部材にポペットヘッドが当接した状態の部分拡大図である。It is the elements on larger scale of the state where the poppet head contacted the seal member including the poppet head and seal member with which the pneumatic operation valve in one embodiment of this indication is provided. 本開示の一実施形態における空圧作動バルブが備えるポペットヘッド及びシール部材を含む、シール部材からポペットヘッドが離間した状態の部分拡大図である。It is the elements on larger scale of the state where the poppet head separated from the seal member including the poppet head and seal member with which the pneumatic operation valve in one embodiment of this indication is provided. 本開示の一実施形態における空圧作動バルブが備える球面軸受機構を含む部分拡大図である。It is the elements on larger scale including the spherical bearing mechanism with which the pneumatically operated valve in one embodiment of this indication is provided. 本開示の一実施形態における空圧作動バルブが備える傾動規制部を含む、シール部材からポペットヘッドが離間した状態の部分拡大図である。It is the elements on larger scale of the state where the poppet head separated from the seal member including the tilt control part with which the pneumatic operation valve in one embodiment of this indication is provided. 本開示の一実施形態における空圧作動バルブが備える傾動規制部を含む、シール部材にポペットヘッドが当接した状態の部分拡大図である。It is the elements on larger scale of the state where the poppet head contacted the seal member including the tilt control part with which the pneumatic operation valve in one embodiment of this indication is provided. 本開示の一実施形態における空圧作動バルブの変形例における部分拡大図である。It is the elements on larger scale in the modification of the pneumatically operated valve in one embodiment of this indication. 本開示の一実施形態における空圧作動バルブの変形例における部分拡大図である。It is the elements on larger scale in the modification of the pneumatically operated valve in one embodiment of this indication.
 以下、図面を参照して、本開示に係るバルブ機構の一実施形態について説明する。なお、以下の図面において、各部材を認識可能な大きさとするために、各部材の縮尺を適宜変更している。なお、以下の実施形態においては、ロケットエンジン用の液体推進剤の供給を制御するための推薬弁である空圧作動バルブに対して本開示を適用した例について説明する。 Hereinafter, an embodiment of a valve mechanism according to the present disclosure will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size. In the following embodiments, an example in which the present disclosure is applied to a pneumatically operated valve that is a propellant valve for controlling the supply of a liquid propellant for a rocket engine will be described.
 図1は、本実施形態の空圧作動バルブ1(バルブ機構)の構成を示す断面図である。なお、図1において、左半分は空圧作動バルブ1の閉状態を示し、右半分は空圧作動バルブ1の開状態を示す。また、空圧作動バルブ1の姿勢は任意であるが、以下の説明においては便宜上、図1の上側を上、図1の下側を下と称する。 FIG. 1 is a cross-sectional view showing a configuration of a pneumatically operated valve 1 (valve mechanism) of the present embodiment. In FIG. 1, the left half shows the closed state of the pneumatically operated valve 1, and the right half shows the opened state of the pneumatically operated valve 1. Further, although the posture of the pneumatically operated valve 1 is arbitrary, in the following description, for the sake of convenience, the upper side of FIG. 1 is referred to as the upper side, and the lower side of FIG.
 本実施形態の空圧作動バルブ1は、ロケットエンジン用の液体推進剤の供給を制御するための推薬弁であり、図1に示すように、ケーシング2と、ピストン3と、第1皿バネ4と、作動用ガス供給装置5と、第1ベローズ6と、軸部7と、第2皿バネ8と、ポペットヘッド9(弁体)と、シール部材10と、球面軸受機構11と、第2ベローズ12と、傾動規制部13とを備えている。 The pneumatically operated valve 1 of this embodiment is a propellant valve for controlling the supply of liquid propellant for a rocket engine. As shown in FIG. 1, a casing 2, a piston 3, and a first disc spring 4, a working gas supply device 5, a first bellows 6, a shaft portion 7, a second disc spring 8, a poppet head 9 (valve element), a seal member 10, a spherical bearing mechanism 11, Two bellows 12 and a tilt restricting portion 13 are provided.
 ケーシング2は、シリンダ2aと、ボディ2bと、ヘッド2cと、第1ボルト2dと、第1バネ2eと、第2ボルト2fと、第2バネ2gとを備えている。シリンダ2aは、ピストン3を収容する部位であり、ボディ2bの上部と連結されている。ボディ2bは、上部にピストン3が連結され、下部にヘッド2cが連結されている。ボディ2bは、内部が流路2b1とされた筒形状の部位であり、流体入口2b2を有している。ヘッド2cは、ボディ2bの内部と連通し、液体推進剤を吐出するための流体出口2c1を有している。 The casing 2 includes a cylinder 2a, a body 2b, a head 2c, a first bolt 2d, a first spring 2e, a second bolt 2f, and a second spring 2g. The cylinder 2a is a part that houses the piston 3, and is connected to the upper part of the body 2b. The body 2b has a piston 3 connected to the upper part and a head 2c connected to the lower part. The body 2b is a cylindrical portion whose inside is a flow path 2b1, and has a fluid inlet 2b2. The head 2c communicates with the inside of the body 2b and has a fluid outlet 2c1 for discharging the liquid propellant.
 また、シリンダ2aとボディ2b、及び、ボディ2bとヘッド2cは、僅かな隙間を介して連結されている。なお、これらの隙間は、シリンダ2a、ボディ2b及びヘッド2cが熱変形したときに、その変形を許容するための空間である。なお、これらの隙間は他の部材によって封止されており、これによって液体推進剤や作動用ガスが漏出することが防止されている。第1ボルト2dは、シリンダ2a側から挿入されると共にボディ2bと螺合することによってシリンダ2aとボディ2bとを締結する。第1バネ2eは、第1ボルト2dの頭部とシリンダ2aとの間に介挿される皿バネであり、シリンダ2aをボディ2bに対して付勢することにより、シリンダ2a及びボディ2bとが熱変形した場合であってもガタツキを防止する。第2ボルト2fは、ヘッド2c側から挿入されると共にボディ2bと螺合することによってボディ2bとヘッド2cとを締結する。第2バネ2gは、第2ボルト2fの頭部とヘッド2cとの間に介挿される皿バネであり、ヘッド2cをボディ2bに対して付勢することにより、ボディ2bとヘッド2cとが熱変形した場合であってもガタツキを防止する。 Further, the cylinder 2a and the body 2b, and the body 2b and the head 2c are connected through a slight gap. These gaps are spaces for allowing deformation when the cylinder 2a, the body 2b, and the head 2c are thermally deformed. These gaps are sealed by other members, thereby preventing the liquid propellant and the working gas from leaking out. The first bolt 2d is inserted from the cylinder 2a side and screwed with the body 2b to fasten the cylinder 2a and the body 2b. The first spring 2e is a disc spring inserted between the head of the first bolt 2d and the cylinder 2a. The cylinder 2a and the body 2b are heated by urging the cylinder 2a against the body 2b. Even if it is deformed, rattling is prevented. The second bolt 2f is inserted from the head 2c side and is screwed to the body 2b to fasten the body 2b and the head 2c. The second spring 2g is a disc spring interposed between the head of the second bolt 2f and the head 2c, and the body 2b and the head 2c are heated by urging the head 2c against the body 2b. Even if it is deformed, rattling is prevented.
 ピストン3は、シリンダ2aの内部に収容されており、作動用ガス供給装置5から供給される作動用ガスによって上下に移動される。第1皿バネ4は、シリンダ2aとピストン3との間に介挿されており、ピストン3を下方に向けて付勢する。これによって、ピストン3は、作動用ガス供給装置5から作動用ガスが供給されていない場合には常に下方に位置することになる。 The piston 3 is accommodated in the cylinder 2a and is moved up and down by the working gas supplied from the working gas supply device 5. The first disc spring 4 is inserted between the cylinder 2a and the piston 3, and biases the piston 3 downward. As a result, the piston 3 is always positioned below when the working gas is not supplied from the working gas supply device 5.
 作動用ガス供給装置5としては、ピストン3の上端面が露出する閉作動用圧力室2a1に作動用ガスを供給する閉作動用ガス供給装置5aと、ピストン3の下端面が露出する開作動用圧力室2a2に作動用ガスを供給する開作動用ガス供給装置5bとが設けられている。第1ベローズ6は、上端がピストン3に固定され下端がボディ2bに固定されており、シリンダ2aの内部を閉作動用圧力室2a1と、閉作動用ガス供給装置5aとに隔離している。 The operating gas supply device 5 includes a closing operation gas supply device 5a for supplying the operating gas to the closing operation pressure chamber 2a1 in which the upper end surface of the piston 3 is exposed, and an opening operation in which the lower end surface of the piston 3 is exposed. An opening operation gas supply device 5b for supplying an operation gas to the pressure chamber 2a2 is provided. The first bellows 6 has an upper end fixed to the piston 3 and a lower end fixed to the body 2b, and isolates the inside of the cylinder 2a into a closing operation pressure chamber 2a1 and a closing operation gas supply device 5a.
 軸部7は、第2皿バネ8を介してピストン3の下部に接続されていると共にピストン3から下方に向けて延びる棒部材であり、先端(下方側の端部)にポペットヘッド9が取り付けられている。このような軸部7は、ピストン3の上下動により上下方向に移動される。このような軸部7の下方にはシール部材10が配置されていることから、軸部7はピストン3の移動によりシール部材10に向けて移動される。 The shaft portion 7 is a rod member that is connected to the lower portion of the piston 3 via the second disc spring 8 and extends downward from the piston 3. A poppet head 9 is attached to the tip (lower end portion). It has been. Such a shaft portion 7 is moved in the vertical direction by the vertical movement of the piston 3. Since the seal member 10 is disposed below the shaft portion 7, the shaft portion 7 is moved toward the seal member 10 by the movement of the piston 3.
 第2皿バネ8は、軸部7とピストン3との間に介挿されており、ポペットヘッド9がシール部材10に対して当接しているときに、軸部7を下方に向けて付勢することで、ポペットヘッド9をシール部材10に対して押圧する。つまり、この第2皿バネ8の付勢力によって、ポペットヘッド9のシール部材10に対する押圧力が規定される。 The second disc spring 8 is interposed between the shaft portion 7 and the piston 3, and biases the shaft portion 7 downward when the poppet head 9 is in contact with the seal member 10. As a result, the poppet head 9 is pressed against the seal member 10. That is, the urging force of the second disc spring 8 defines the pressing force of the poppet head 9 against the seal member 10.
 図2A、Bは、ポペットヘッド9及びシール部材10を含む部分拡大図であり、図2Aは、シール部材10にポペットヘッド9が当接した状態を示し、図2Bは、シール部材10からポペットヘッド9が離間した状態を示している。図2A、Bに示すように、ポペットヘッド9は、下部が球面状に湾曲された略半球型形状を有しており、例えばニッケル基超合金によって形成されている。このポペットヘッド9は、上方から見てシール部材10の後述する開口10aよりも大径とされており、シール部材10に当接することによって開口10aを閉塞する。 2A and 2B are partial enlarged views including the poppet head 9 and the seal member 10, and FIG. 2A shows a state in which the poppet head 9 is in contact with the seal member 10, and FIG. 9 shows a separated state. As shown in FIGS. 2A and 2B, the poppet head 9 has a substantially hemispherical shape with a lower portion curved in a spherical shape, and is formed of, for example, a nickel-base superalloy. The poppet head 9 has a larger diameter than an opening 10a (described later) of the seal member 10 as viewed from above, and closes the opening 10a by contacting the seal member 10.
 シール部材10は、流体を吐出するための開口10aが設けられた樹脂製の部材であり、開口10aがヘッド2cの流体出口2c1と連通するようにボディ2bとヘッド2cとによって挟持されている。開口10aの周面には、開口10aが下方に向けて窄むようにテーパ面10bが設けられている。このテーパ面10bは、上方から当接されるポペットヘッド9を、ポペットヘッド9が全周に亘ってシール部材10に対して均一な押圧力で当接する位置(例えば上方から見て開口10aの中心とポペットヘッド9の中心とが重なる位置であり、シール部材10に当接するポペットヘッド9が安定する位置)に案内する。
 このようなシール部材10は、例えばPCTFE(ポリクロロトリフルオロエチレン)等の樹脂を用いて形成することができる。
The seal member 10 is a resin member provided with an opening 10a for discharging fluid, and is sandwiched between the body 2b and the head 2c so that the opening 10a communicates with the fluid outlet 2c1 of the head 2c. A tapered surface 10b is provided on the peripheral surface of the opening 10a so that the opening 10a is narrowed downward. The tapered surface 10b is a position where the poppet head 9 abutted from above contacts the seal member 10 with a uniform pressing force over the entire circumference (for example, the center of the opening 10a when viewed from above). And the center of the poppet head 9 are overlapped, and the poppet head 9 abutting against the seal member 10 is guided to a stable position).
Such a sealing member 10 can be formed using resin, such as PCTFE (polychlorotrifluoroethylene), for example.
 図3は、球面軸受機構11を含む部分拡大図である。この図に示すように、球面軸受機構11は、内輪11aと、外輪11bと、リテーニングリング11cとを備えている。内輪11aは、外周面が球面とされると共に軸部7が挿通される開口を有する環状部材である。この内輪11aは、外輪11bに嵌合することにより支持されている。また、内輪11aはその外周面を摺動面として外輪11bに当接し、外輪11bに対して傾動可能とされている。外輪11bは、リテーニングリング11cによってボディ2bに固定されている。 FIG. 3 is a partially enlarged view including the spherical bearing mechanism 11. As shown in this figure, the spherical bearing mechanism 11 includes an inner ring 11a, an outer ring 11b, and a retaining ring 11c. The inner ring 11a is an annular member having an opening through which the outer peripheral surface is spherical and the shaft portion 7 is inserted. The inner ring 11a is supported by being fitted to the outer ring 11b. Further, the inner ring 11a is in contact with the outer ring 11b with its outer peripheral surface as a sliding surface, and can be tilted with respect to the outer ring 11b. The outer ring 11b is fixed to the body 2b by a retaining ring 11c.
 このような球面軸受機構11は、内輪11aが外輪11bに対して傾動可能とされていることから、内輪11aに挿通される軸部7を傾動可能に支持する。また、内輪11aが極めて微小な隙間を空けて軸部7を囲っており、軸部7を上下方向に移動可能としている。なお、軸部7が上下方向に移動可能であれば、内輪11aは、軸部7の周面に対して摺動可能に当接されていても良い。 Since the inner ring 11a can tilt with respect to the outer ring 11b, such a spherical bearing mechanism 11 supports the shaft portion 7 inserted through the inner ring 11a so as to tilt. The inner ring 11a surrounds the shaft portion 7 with a very small gap, and the shaft portion 7 can be moved in the vertical direction. In addition, as long as the axial part 7 can move to an up-down direction, the inner ring | wheel 11a may contact | abut to the surrounding surface of the axial part 7 so that sliding is possible.
 このような球面軸受機構11においては、軸部7が軸部7の本来の移動方向(ピストン3の移動方向であって上下方向)に対して僅かにでも傾動した場合には、軸部7が内輪11aに接触した状態でピストン3の移動に伴って移動する。例えばロケットエンジンに空圧作動バルブ1が搭載される場合には、広い温度範囲で使用されることから、グリース等の潤滑剤を用いることはできない。このため、軸部7が内輪11aに接触している場合であっても、軸部7が円滑に移動できるよう、内輪11a及び軸部7の摩擦係数、内輪11aの内径、軸部7の外径、及び内輪11aの軸部7の延びる方向の長さ等が設定されている。具体的には、軸部7と内輪11aとの間の摩擦力が軸部7の円滑な移動を阻害する程度に局所的に過大とならないよう、内輪11aと軸部7との接触面積を広く確保する必要がある。このような接触面積が確保されるように、内輪11a及び軸部7の摩擦係数、内輪11aの内径、軸部7の外径、及び内輪11aの軸部7の延びる方向の長さ等が設定される。 In such a spherical bearing mechanism 11, when the shaft portion 7 is tilted even slightly with respect to the original movement direction of the shaft portion 7 (the moving direction of the piston 3, the vertical direction), the shaft portion 7 is The piston 3 moves with the movement of the piston 3 in a state of being in contact with the inner ring 11a. For example, when the pneumatically operated valve 1 is mounted on a rocket engine, a lubricant such as grease cannot be used because it is used in a wide temperature range. For this reason, even when the shaft part 7 is in contact with the inner ring 11a, the friction coefficient of the inner ring 11a and the shaft part 7, the inner diameter of the inner ring 11a, and the outer part of the shaft part 7 so that the shaft part 7 can move smoothly. The diameter, the length in the extending direction of the shaft portion 7 of the inner ring 11a, and the like are set. Specifically, the contact area between the inner ring 11a and the shaft portion 7 is increased so that the frictional force between the shaft portion 7 and the inner ring 11a does not become excessively large to the extent that the smooth movement of the shaft portion 7 is hindered. It is necessary to secure. The friction coefficient of the inner ring 11a and the shaft part 7, the inner diameter of the inner ring 11a, the outer diameter of the shaft part 7, the length of the inner ring 11a in the extending direction of the shaft part 7 and the like are set so as to ensure such a contact area. Is done.
 図1に戻り、第2ベローズ12は、軸部7を囲うようにしてボディ2bの内部に配置されている。このような第2ベローズ12は、球面軸受機構11や軸部7とピストン3との接続部位が配置される空間をボディ2bの内部に形成される流路2b1から隔離する。この第2ベローズ12によって、ボディ2bの流路2b1に供給される流体が球面軸受機構11や軸部7とピストン3との接続部位を通じてシリンダ2a内部に流入することを防止することができる。 Referring back to FIG. 1, the second bellows 12 is disposed inside the body 2b so as to surround the shaft portion 7. Such a second bellows 12 isolates the space in which the spherical bearing mechanism 11 and the connecting portion between the shaft portion 7 and the piston 3 are arranged from the flow path 2b1 formed inside the body 2b. The second bellows 12 can prevent the fluid supplied to the flow path 2b1 of the body 2b from flowing into the cylinder 2a through the spherical bearing mechanism 11 or the connecting portion between the shaft portion 7 and the piston 3.
 図4A、Bは、傾動規制部13を含む部分拡大図であり、図4Aがシール部材10からポペットヘッド9が離間した状態を示し、図4Bがシール部材10にポペットヘッド9が当接した状態を示している。傾動規制部13は、シリンダ2a内部の上部に設けられており、ガイド部13a、厚肉部13bと、薄肉部13cとを備えている。ガイド部13aは、シリンダ2aの天井から下方に向けて垂下された突起部である。厚肉部13b及び薄肉部13cは、ピストン3の上部に設けられており、厚肉部13bの上方に薄肉部13cが設けられている。厚肉部13bは、薄肉部13cよりもピストン3の中心側に膨出するように、薄肉部13cよりも肉厚に形成された部位である。この厚肉部13bは、図4Aに示すように、シール部材10からポペットヘッド9が離間した状態すなわちピストン3が上昇した状態においてガイド部13aの外周面に対して摺動可能に当接する。また、図4Bに示すように、厚肉部13bは、シール部材10にポペットヘッド9が当接した状態すなわちピストン3が下降した状態においてガイド部13aと接触しなくなる位置及び厚さに形成されている。 4A and 4B are partial enlarged views including the tilt restricting portion 13. FIG. 4A shows a state where the poppet head 9 is separated from the seal member 10, and FIG. 4B shows a state where the poppet head 9 is in contact with the seal member 10. Is shown. The tilt restricting portion 13 is provided in an upper portion inside the cylinder 2a, and includes a guide portion 13a, a thick portion 13b, and a thin portion 13c. The guide portion 13a is a protrusion that hangs downward from the ceiling of the cylinder 2a. The thick part 13b and the thin part 13c are provided in the upper part of the piston 3, and the thin part 13c is provided above the thick part 13b. The thick portion 13b is a portion formed thicker than the thin portion 13c so as to bulge toward the center of the piston 3 rather than the thin portion 13c. As shown in FIG. 4A, the thick portion 13b slidably contacts the outer peripheral surface of the guide portion 13a when the poppet head 9 is separated from the seal member 10, that is, when the piston 3 is raised. Further, as shown in FIG. 4B, the thick portion 13b is formed at a position and thickness that does not contact the guide portion 13a when the poppet head 9 is in contact with the seal member 10, that is, when the piston 3 is lowered. Yes.
 このような傾動規制部13では、ピストン3が上昇した状態においてガイド部13aの外周面に対して当接することから、シール部材10からポペットヘッド9が離間した状態においてピストン3すなわち軸部7が傾動しないように規制する。 In such a tilt restricting portion 13, the piston 3 abuts against the outer peripheral surface of the guide portion 13 a when the piston 3 is raised, and therefore the piston 3, that is, the shaft portion 7 tilts when the poppet head 9 is separated from the seal member 10. Regulate not to.
 このように構成された本実施形態の空圧作動バルブ1によれば、閉作動用ガス供給装置5aから作動用ガスが閉作動用圧力室2a1に供給されると、ピストン3が下方に押され、軸部7が下降してポペットヘッド9がシール部材10に当接する。これによって、シール部材10の開口10aが閉鎖されて流体が流体出口2c1から吐出されない状態となる。一方、開作動用ガス供給装置5bから作動用ガスが開作動用圧力室2a2に供給されると、ピストン3が上方に押され、軸部7が上昇してポペットヘッド9がシール部材10から離間する。これによって、シール部材10の開口10aが開放され、流体が流体出口2c1から吐出される。 According to the pneumatically operated valve 1 of the present embodiment configured as described above, when the operating gas is supplied from the closed operating gas supply device 5a to the closed operating pressure chamber 2a1, the piston 3 is pushed downward. The shaft portion 7 is lowered and the poppet head 9 comes into contact with the seal member 10. As a result, the opening 10a of the seal member 10 is closed, and the fluid is not discharged from the fluid outlet 2c1. On the other hand, when the operating gas is supplied from the gas supply device 5b for opening operation to the pressure chamber 2a2 for opening operation, the piston 3 is pushed upward, the shaft portion 7 is raised, and the poppet head 9 is separated from the seal member 10. To do. Thereby, the opening 10a of the seal member 10 is opened, and the fluid is discharged from the fluid outlet 2c1.
 以上のような本実施形態の空圧作動バルブ1においては、球面軸受機構11によってポペットヘッド9が軸部7の移動方向に対して傾動可能に支持されている。このため、本実施形態の空圧作動バルブ1によれば、経年劣化等によってシール部材10が変形した場合であっても、ポペットヘッド9がシール部材10に対して当接及び傾動することによって、ポペットヘッド9がシール部材10に対して最も安定した位置となるように、自動で調芯される。この結果、ポペットヘッド9がシール部材10に対して偏って当接することを抑制することができ、ポペットヘッド9のシール部材10への押圧力が局所的に過大となることを防止することができる。したがって、本実施形態の空圧作動バルブ1によれば、シール部材10にクリープが生じることを抑制することができる。
 また、開口10aが、下方に向けて窄むようなテーパ面10bを有する漏斗型をなすことにより、略半球型形状のポペットヘッド9が、シール部材10に当接及び傾動可能に支持され、軸部7のずれを無くすことができる。
In the pneumatically operated valve 1 of the present embodiment as described above, the poppet head 9 is supported by the spherical bearing mechanism 11 so as to be tiltable with respect to the moving direction of the shaft portion 7. For this reason, according to the pneumatically operated valve 1 of the present embodiment, even when the seal member 10 is deformed due to deterioration over time or the like, the poppet head 9 abuts and tilts against the seal member 10, The poppet head 9 is automatically aligned so that it is in the most stable position with respect to the seal member 10. As a result, it is possible to suppress the poppet head 9 from abutting against the seal member 10 in a biased manner, and to prevent the pressing force of the poppet head 9 against the seal member 10 from being locally excessive. . Therefore, according to the pneumatically operated valve 1 of the present embodiment, the occurrence of creep in the seal member 10 can be suppressed.
Further, the opening 10a is formed in a funnel shape having a tapered surface 10b that narrows downward, so that the substantially hemispherical poppet head 9 is supported so as to be able to contact and tilt with the seal member 10, and the shaft portion 7 shifts can be eliminated.
 また、本実施形態の空圧作動バルブ1においては、本開示の弁体傾動機構として、軸部7を傾動可能かつ軸心方向へ移動可能に支持する球面軸受機構11を用いている。このような本実施形態の空圧作動バルブ1によれば、簡易な機構によって、ポペットヘッド9の調芯を行うことが可能となる。 Further, in the pneumatically operated valve 1 of the present embodiment, a spherical bearing mechanism 11 that supports the shaft portion 7 so as to be tiltable and movable in the axial direction is used as the valve body tilting mechanism of the present disclosure. According to the pneumatically operated valve 1 of this embodiment, it is possible to align the poppet head 9 with a simple mechanism.
 また、本実施形態の空圧作動バルブ1においては、ポペットヘッド9がシール部材10から離間している場合に、軸部7の傾動を規制する傾動規制部13を備えている。このため、ポペットヘッド9がシール部材10から離間しているときに、軸部7が振動等することを防止することができる。 Further, the pneumatically operated valve 1 of the present embodiment includes a tilt restricting portion 13 that restricts the tilt of the shaft portion 7 when the poppet head 9 is separated from the seal member 10. For this reason, when the poppet head 9 is separated from the seal member 10, the shaft portion 7 can be prevented from vibrating.
 以上、添付図面を参照しながら本開示の好適な実施形態について説明したが、本開示は上記実施形態に限定されない。上述した実施形態において示した各構成部材の諸形状や組み合わせ等は一例であって、本開示の趣旨から逸脱しない範囲において設計要求等に基づき種々変更可能である。 The preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, but the present disclosure is not limited to the above embodiments. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the spirit of the present disclosure.
 例えば、本開示においては、図5に示すように、軸部7とポペットヘッド9との間に介在されるコイルバネ20(弾性部材)を設け、このコイルバネ20を本開示の弁体傾動機構とすることも可能である。このような場合には、軸部7を傾動させることなくポペットヘッド9のみを傾動させることができる。また、図6に示すように、軸部7を、ポペットヘッド9が固定されるヘッド7aと、ヘッド7aに対して球面軸受機構30を介して接続される基部7bとを有する構造とし、球面軸受機構30を本開示の弁体傾動機構とすることも可能である。このような場合には、弁体傾動機構を軸部7の内部に形成することができ、軸部7を製造することによって同時に弁体傾動機構を設けることが可能となる。 For example, in the present disclosure, as shown in FIG. 5, a coil spring 20 (elastic member) interposed between the shaft portion 7 and the poppet head 9 is provided, and this coil spring 20 is used as the valve body tilting mechanism of the present disclosure. It is also possible. In such a case, only the poppet head 9 can be tilted without tilting the shaft portion 7. As shown in FIG. 6, the shaft portion 7 has a structure including a head 7a to which the poppet head 9 is fixed and a base portion 7b connected to the head 7a via a spherical bearing mechanism 30. The mechanism 30 may be the valve body tilting mechanism of the present disclosure. In such a case, the valve body tilting mechanism can be formed inside the shaft portion 7, and by manufacturing the shaft portion 7, the valve body tilting mechanism can be provided at the same time.
 また、上記実施形態においては、シール部材10が樹脂からなる構成について説明した。しかしながら、本開示はこれに限定されず、ポペットヘッド9を樹脂によって形成し、シール部材10を金属によって形成することも可能である。 In the above embodiment, the configuration in which the seal member 10 is made of resin has been described. However, the present disclosure is not limited to this, and the poppet head 9 can be formed of resin, and the seal member 10 can be formed of metal.
 また、上記実施形態においては、本開示のバルブ機構を空圧作動バルブ1に適用した例について説明した。しかしながら、本開示はこれに限定されず、広い温度範囲で使用されるバルブ機構や振動のある環境で使用されるバルブ機構等に好適である。 In the above embodiment, the example in which the valve mechanism of the present disclosure is applied to the pneumatically operated valve 1 has been described. However, the present disclosure is not limited to this, and is suitable for a valve mechanism used in a wide temperature range, a valve mechanism used in an environment with vibration, and the like.
 弁体をシール部材に当接させることによって閉塞を行う、本開示のバルブ機構によれば、シール部材等にクリープが生じることを抑制することが可能である。 According to the valve mechanism of the present disclosure in which the valve body is closed by contacting the seal member, it is possible to suppress the occurrence of creep in the seal member or the like.
1 空圧作動バルブ(バルブ機構)
2 ケーシング
2a シリンダ
2a1 閉作動用圧力室
2a2 開作動用圧力室
2b ボディ
2b1 流路
2b2 流体入口
2c ヘッド
2c1 流体出口
2d 第1ボルト
2e 第1バネ
2f 第2ボルト
2g 第2バネ
3 ピストン
4 第1皿バネ
5 作動用ガス供給装置
5a 閉作動用ガス供給装置
5b 開作動用ガス供給装置
6 第1ベローズ
7 軸部
7a ヘッド
7b 基部
8 第2皿バネ
9 ポペットヘッド(弁体)
10 シール部材
10a 開口
10b テーパ面
11、30 球面軸受機構(弁体傾動機構)
11a 内輪
11b 外輪
11c リテーニングリング
12 第2ベローズ
13 傾動規制部
13a ガイド部
13b 厚肉部
13c 薄肉部
20 コイルバネ(弾性部材、弁体傾動機構)
1 Pneumatically operated valve (valve mechanism)
2 Casing 2a Cylinder 2a1 Pressure chamber 2a2 for closing operation Pressure chamber 2b for opening operation Body 2b1 Flow path 2b2 Fluid inlet 2c Head 2c1 Fluid outlet 2d First bolt 2e First spring 2f Second bolt 2g Second spring 3 Piston 4 First Belleville spring 5 operating gas supply device 5a closing operation gas supply device 5b opening operation gas supply device 6 first bellows 7 shaft portion 7a head 7b base portion 8 second disc spring 9 poppet head (valve element)
DESCRIPTION OF SYMBOLS 10 Seal member 10a Opening 10b Tapered surface 11, 30 Spherical bearing mechanism (valve body tilting mechanism)
11a Inner ring 11b Outer ring 11c Retaining ring 12 Second bellows 13 Tilt restricting part 13a Guide part 13b Thick part 13c Thin part 20 Coil spring (elastic member, valve body tilting mechanism)

Claims (5)

  1.  流体を吐出する開口を有するシール部材と、前記シール部材と当接されることで前記開口を閉塞する弁体と、前記弁体が取り付けられると共に前記シール部材に向けて移動される軸部とを備えるバルブ機構であって、
     前記弁体を前記軸部の移動方向に対して傾動可能に支持する弁体傾動機構を備えるバルブ機構。
    A seal member having an opening for discharging fluid; a valve body that closes the opening by being in contact with the seal member; and a shaft portion to which the valve body is attached and moved toward the seal member. A valve mechanism comprising:
    A valve mechanism including a valve body tilting mechanism that supports the valve body so as to be tiltable with respect to a moving direction of the shaft portion.
  2.  前記弁体傾動機構は、前記軸部を傾動可能かつ軸心方向へ移動可能に支持する球面軸受機構からなる請求項1記載のバルブ機構。 The valve mechanism according to claim 1, wherein the valve body tilting mechanism comprises a spherical bearing mechanism that supports the shaft portion so as to be tiltable and movable in the axial direction.
  3.  前記弁体が前記シール部材に対して離間している場合に前記軸部の傾動を規制する傾動規制部を備える請求項2記載のバルブ機構。 3. The valve mechanism according to claim 2, further comprising a tilt restricting portion that restricts tilting of the shaft portion when the valve body is separated from the seal member.
  4.  前記弁体傾動機構は、前記軸部と前記弁体との間に介在される弾性部材からなる請求項1記載のバルブ機構。 The valve mechanism according to claim 1, wherein the valve body tilting mechanism is formed of an elastic member interposed between the shaft portion and the valve body.
  5.  前記軸部が、前記弁体が固定されるヘッドと、当該ヘッドに対して球面軸受機構を介して接続される基部とを有し、
     前記弁体傾動機構は、前記球面軸受機構からなる請求項1記載のバルブ機構。
    The shaft portion has a head to which the valve body is fixed, and a base portion connected to the head via a spherical bearing mechanism,
    The valve mechanism according to claim 1, wherein the valve body tilting mechanism includes the spherical bearing mechanism.
PCT/JP2015/069754 2014-10-20 2015-07-09 Valve mechanism WO2016063582A1 (en)

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* Cited by examiner, † Cited by third party
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JP2018131962A (en) * 2017-02-15 2018-08-23 三菱日立パワーシステムズ株式会社 Steam valve and steam turbine facility
WO2024080066A1 (en) * 2022-10-14 2024-04-18 株式会社デンソー Electric expansion valve and refrigeration cycle device

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Publication number Priority date Publication date Assignee Title
JPS59101074U (en) * 1982-12-27 1984-07-07 太平洋工業株式会社 Valve shape of proportional control valve
JPS59122465U (en) * 1983-02-07 1984-08-17 阪口 貞夫 fusing or welding machine valve
JPS6455477A (en) * 1987-08-24 1989-03-02 Fukada Kogyo Kk Sealing type opening and closing valve
JPH02116069U (en) * 1989-03-03 1990-09-17
JP2010071397A (en) * 2008-09-19 2010-04-02 Aisan Ind Co Ltd Bearing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101074U (en) * 1982-12-27 1984-07-07 太平洋工業株式会社 Valve shape of proportional control valve
JPS59122465U (en) * 1983-02-07 1984-08-17 阪口 貞夫 fusing or welding machine valve
JPS6455477A (en) * 1987-08-24 1989-03-02 Fukada Kogyo Kk Sealing type opening and closing valve
JPH02116069U (en) * 1989-03-03 1990-09-17
JP2010071397A (en) * 2008-09-19 2010-04-02 Aisan Ind Co Ltd Bearing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018131962A (en) * 2017-02-15 2018-08-23 三菱日立パワーシステムズ株式会社 Steam valve and steam turbine facility
WO2024080066A1 (en) * 2022-10-14 2024-04-18 株式会社デンソー Electric expansion valve and refrigeration cycle device

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