CN114738544A - Piston ring indicating device of hydraulic turbine ball valve - Google Patents

Piston ring indicating device of hydraulic turbine ball valve Download PDF

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Publication number
CN114738544A
CN114738544A CN202210429208.XA CN202210429208A CN114738544A CN 114738544 A CN114738544 A CN 114738544A CN 202210429208 A CN202210429208 A CN 202210429208A CN 114738544 A CN114738544 A CN 114738544A
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CN
China
Prior art keywords
cavity
sliding
liquid cavity
movable piece
valve body
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
Application number
CN202210429208.XA
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Chinese (zh)
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CN114738544B (en
Inventor
王洪运
王雄文
杨宇茂
罗光武
杨呈
喻明武
李兵兵
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Hubei Hongcheng General Machinery Co ltd
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Hubei Hongcheng General Machinery Co ltd
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Application filed by Hubei Hongcheng General Machinery Co ltd filed Critical Hubei Hongcheng General Machinery Co ltd
Priority to CN202210429208.XA priority Critical patent/CN114738544B/en
Publication of CN114738544A publication Critical patent/CN114738544A/en
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Publication of CN114738544B publication Critical patent/CN114738544B/en
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    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/004—Valve arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/008—Measuring or testing arrangements
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Taps Or Cocks (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)

Abstract

The invention provides a piston ring indicating device of a hydraulic turbine ball valve, which comprises a valve body, a ring body, a movable piece and an indicating component, wherein the valve body is provided with a valve seat; a liquid cavity and a sliding cavity are arranged in the valve body, the liquid cavity is isolated from the interior of the valve body, the sliding cavity extends along the moving direction of the ring body, and two ends of the sliding cavity are respectively communicated with the interior of the valve body and the liquid cavity; the movable part is arranged in the sliding cavity and can move along the extending direction of the sliding cavity, one end of the movable part is abutted against the ring body, the other end of the movable part is inserted into the liquid cavity, a channel is formed in the movable part, and two ends of the channel are respectively communicated with the liquid cavity and the interior of the valve body; the indicating component is arranged on the movable piece and can synchronously move along with the movable piece, and the indicating component can know that the ring body moves towards the liquid cavity or moves away from the liquid cavity in the valve body; the liquid inlet and outlet cavity enables the movable part to continuously support the ring body, so that the position of the ring body in the valve body can be known through the indicating assembly, the movable part is not required to be fixedly connected with the ring body, and the installation difficulty is small for the installation precision requirement angle.

Description

Piston ring indicating device of hydraulic turbine ball valve
Technical Field
The invention relates to the technical field of ball valves, in particular to a piston ring indicating device of a water turbine ball valve.
Background
The water turbine inlet ball valve is used as a protection valve of the water turbine and is arranged between the hydropower station pressure steel pipe and the volute. Plays an important role in the operation and maintenance of the hydropower station: closing the water turbine set during maintenance and cutting off upstream water; when the unit is stopped for a long time, the valve is closed by still water to reduce water leakage and abrasion of the water distributor; under the condition that an accident occurs to the unit or the guide vane is out of order, the water is moved to be closed emergently to prevent the unit from overspeed.
A ball valve generally includes a valve body as a main body and a ball rotatably disposed in the valve body, and piston rings are disposed between both sides of the ball and an inner wall of the valve body. When the valve ball is opened to enable the fluid in the ball valve to flow, a gap exists between the piston ring and the valve ball, so that the valve ball can be rotated to be opened; when the valve ball is closed to make the fluid in the ball valve not be circulated, the piston ring can be moved and supported on the surface of the valve ball, so that the valve ball is prevented from rotating and plays a role of sealing. Therefore, in order to monitor and control the opening and closing conditions of the ball valve, an operator generally installs a piston ring indicating mechanism in the ball valve, so that the piston ring indicating mechanism can indicate the position of the piston ring in the ball valve.
In the traditional product, when the piston ring indicating mechanism is installed on the ball valve, the piston ring indicating mechanism is fixedly connected with a piston ring in the ball valve, so that when the piston ring indicating mechanism is installed on site, the piston ring indicating mechanism is required to be accurately butted with an upstream short pipe flange, a piston ring and other components, a high requirement is provided for site installation accuracy, the installation period of the valve is directly influenced, and the installation period and the disassembly period on site are greatly increased. Meanwhile, when the ball valve is installed, the piston ring indicating mechanism can penetrate through the upstream short pipe flange at multiple positions, so that the ball valve is easy to leak water, and the overall structural strength of the ball valve is reduced.
Disclosure of Invention
In view of the above, the invention provides a piston ring indicating device of a hydraulic turbine ball valve, which solves the problem that a sealing locking mechanism needs to be fixedly connected with a piston ring in a traditional product, so that high requirements on installation accuracy are met.
The technical scheme of the invention is realized as follows: the invention provides a piston ring indicating device of a hydraulic turbine ball valve, which comprises a valve body, a ring body arranged in the valve body, a movable part and an indicating component, wherein the ring body can move along the flowing direction of fluid in the valve body; a liquid cavity and a sliding cavity are arranged in the valve body, the liquid cavity is isolated from the interior of the valve body, the sliding cavity extends along the moving direction of the ring body, and two ends of the sliding cavity are respectively communicated with the interior of the valve body and the liquid cavity; the movable part is arranged in the sliding cavity and can move along the extending direction of the sliding cavity, one end of the movable part is abutted against the ring body, the other end of the movable part is inserted into the liquid cavity, a channel is formed in the movable part, and two ends of the channel are respectively communicated with the liquid cavity and the interior of the valve body; the indicating component is arranged on the movable piece and can move along with the movable piece synchronously, and the indicating component can know that the ring body moves towards the liquid cavity or moves away from the liquid cavity in the valve body.
On the basis of the technical scheme, preferably, the indicating assembly comprises a sliding block, a sliding groove is further formed in the valve body, one end of the sliding groove is communicated with the sliding cavity, the other end of the sliding groove is communicated with the external environment, and the extending direction of the sliding groove and the extending direction of the sliding cavity are arranged in a crossed mode; the slider sets up in the spout, and slider one end sets up on the moving part, and the slider other end extends to external environment, and the width of slider along sliding chamber extending direction is less than the width of spout along sliding chamber extending direction, and the slider can follow the moving part along sliding chamber extending direction synchronous motion in the spout.
It is further preferred that the direction of extension of the runner is perpendicular to the direction of extension of the slide cavity.
Still more preferably, the indicating assembly further comprises an indicating plate and two limiting members; the indicating plate is arranged at the end part of the sliding block extending to the external environment; the two limiting parts are respectively arranged on two sides of the indicating plate along the moving direction of the sliding cavity.
It is further preferred that the distance between the two stop members is the same as the maximum distance the ring body can move.
Preferably, when the ring body moves in the direction away from the liquid cavity, the fluid in the valve body enters the liquid cavity through the channel and fills the liquid cavity, and meanwhile, the movable member is pushed to move towards the ring body and abut against the ring body, so that the indicating plate is driven to synchronously move along with the movable member and abut against one of the limiting members; when the ring body moves towards the liquid cavity, the ring body pushes the movable piece supported on the ring body to move synchronously, so that the volume of the part of the movable piece inserted into the liquid cavity is increased, fluid in the liquid cavity is discharged into the valve body through the channel, and the indicating plate is driven to move synchronously along with the movable piece and supported on the other limiting piece.
On above technical scheme's basis, preferred, the moving part includes the round pin body and block, and the round pin body sets up in the sliding chamber, and the block setting is kept away from the tip of ring body and is set up in the sap cavity at the round pin body, and the block is less than the length of sap cavity extending direction along the length of sliding chamber extending direction.
It is further preferred that the inner diameter of the liquid chamber is larger than the inner diameter of the slide chamber.
More preferably, the pin body and the sliding cavity have the same radial cross-sectional shape and area, and the block body and the liquid cavity have the same radial cross-sectional shape and area.
It is further preferred that the axial length of the pin body is greater than the length of the slide cavity in the direction of extension.
Compared with the prior art, the piston ring indicating device of the water turbine ball valve has the following beneficial effects:
according to the invention, the fluid enters and exits the liquid cavity to enable the movable piece to continuously abut against the ring body, so that the position of the ring body in the valve body can be known through the indicating assembly, the movable piece does not need to be fixedly connected with the ring body, the mounting difficulty is low for the mounting precision requirement angle, and the indicating device cannot penetrate through the flange in the mounting process, so that water leakage or reduction of the structural strength of the ball valve is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side cross-sectional view of a piston ring indicating device of the present invention;
fig. 2 is an enlarged view of the invention at a in fig. 1.
In the figure: 1. a valve body; 101. a liquid chamber; 102. a slide chamber; 103. a chute; 2. a ring body; 3. a movable member; 31. a pin body; 32. a block body; 301. a channel; 4. an indicating component; 41. a slider; 42. an indicator panel; 43. and a limiting member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, the piston ring indicating device of a ball valve of a water turbine of the present invention comprises a valve body 1 and a ring body 2 disposed in the valve body 1, wherein the ring body 2 can move along the flow direction of fluid in the valve body 1, and further comprises a movable member 3 and an indicating component 4.
Wherein, set up liquid chamber 101 and smooth chamber 102 in the valve body 1, liquid chamber 101 is isolated with the valve body 1 inside, and smooth chamber 102 extends along the direction of movement of ring body 2, and smooth chamber 102 both ends are linked together with the inside of valve body 1 and liquid chamber 101 respectively.
The movable part 3 is arranged in the sliding cavity 102 and can move along the extending direction of the sliding cavity 102, one end of the movable part 3 is propped against the ring body 2, the other end of the movable part 3 is inserted into the liquid cavity 101, a channel 301 is arranged in the movable part 3, and two ends of the channel 301 are respectively communicated with the liquid cavity 101 and the interior of the valve body 1.
When the ball valve is closed, the ring body 2 abuts against the ball valve, so that the ring body 2 is far away from the liquid cavity 101, the channel 301 is communicated with the interior of the valve body 1, the fluid in the valve body 1 enters the liquid cavity 101 through the channel 301, and the liquid cavity 101 is filled to push the movable piece 3 to move towards the interior of the valve body 1 and finally abut against the ring body 2.
When the ball valve is opened, the ring body 2 releases the ball valve and moves towards the liquid chamber 101, and simultaneously pushes the movable member 3 into the liquid chamber 101, so as to press the fluid in the liquid chamber 101 and discharge the fluid to the environment inside the valve body 1 through the passage 301.
In the opening and closing process of the ball valve, the movable member 3 is always supported on the ring body 2, so that the position change of the ring body 2 can drive the position change of the movable member 3. Meanwhile, compared with the traditional product, the movable piece 3 is fixedly connected with the ring body 2, and in the invention, the position of the ring body 2 can be indicated only by abutting the movable piece 3 against the ring body 2, so that the installation precision of the movable piece 3 and the ring body 2 is not required to be considered during installation, and the installation difficulty is further reduced.
The indicating component 4 is arranged on the movable element 3 and can move synchronously with the movable element 3, and the indicating component 4 can know that the ring body 2 moves towards the liquid cavity 101 or moves away from the liquid cavity 101 in the valve body 1, so that if the indicating component 4 knows the position of the movable element 3, the position of the ring body 2 can be indicated.
Example two:
on the basis of the first embodiment, in particular, the indicating assembly 4 comprises a slider 41.
Wherein, still seted up spout 103 in the valve body 1, spout 103 one end is linked together and the other end is linked together with external environment with smooth chamber 102, and the extending direction of spout 103 sets up with the extending direction cross of smooth chamber 102, therefore spout 103 can not just can avoid the ball valve to leak and reduce the problem of ball valve structural strength like traditional product, need pierce through mounting flange. Preferably, the extending direction of the sliding slot 103 is perpendicular to the extending direction of the sliding cavity 102.
The sliding block 41 is arranged in the sliding groove 103, one end of the sliding block 41 is arranged on the movable element 3, the other end of the sliding block 41 extends to the external environment, the width of the sliding block 41 along the extending direction of the sliding cavity 102 is smaller than that of the sliding groove 103 along the extending direction of the sliding cavity 102, and the sliding block 41 can synchronously move along with the movable element 3 along the extending direction of the sliding cavity 102 in the sliding groove 103.
Example three:
in the second embodiment, the indicating assembly 4 further includes an indicating plate 42 and two position-limiting members 43.
Wherein the indicator plate 42 is arranged at the end of the slider 41 extending to the environment.
The two limiting members 43 are respectively arranged on two sides of the indicating plate 42 along the moving direction of the sliding cavity 102, and the distance between the two limiting members 43 is the same as the maximum movable distance of the ring body 2, so that a person can clearly judge the moving distance and the specific position of the ring body 2.
Example four:
on the basis of the third embodiment, the specific operation steps of the piston ring indicating device of the invention are as follows:
when the ring body 2 moves away from the liquid chamber 101, the fluid in the valve body 1 enters the liquid chamber 101 through the channel 301 and fills the liquid chamber 101, and meanwhile, the movable member 3 is pushed to move towards the ring body 2 and abut against the ring body 2, so that the indicating plate 42 is driven to synchronously move along with the movable member 3 and abut against one of the limiting members 43.
When the ring body 2 moves towards the liquid chamber 101, the ring body 2 pushes the movable element 3 abutting against the ring body 2 to move synchronously, so that the volume of the part of the movable element 3 inserted into the liquid chamber 101 is increased, the fluid in the liquid chamber 101 is discharged into the valve body 1 through the channel 301, and the indicating plate 42 is driven to move synchronously along with the movable element 3 and abut against the other limiting member 43.
Example five:
in the first embodiment, the movable element 3 includes a pin 31 and a block 32.
Wherein the inner diameter of the fluid chamber 101 is larger than the inner diameter of the slide chamber 102.
The pin body 31 is arranged in the sliding cavity 102, the radial cross-sectional shapes and areas of the pin body 31 and the sliding cavity 102 are the same, the axial length of the pin body 31 is larger than the length of the sliding cavity 102 in the extending direction, so that the pin body 31 has enough length to extend out of the sliding cavity 102 to be abutted against the ring body 2, or the pin body 31 has enough length to be inserted into the liquid cavity 101 to extrude and discharge fluid in the liquid cavity 101.
The block 32 is arranged at the end of the pin 31 far away from the ring body 2 and arranged in the liquid cavity 101, the length of the block 32 along the extending direction of the sliding cavity 102 is smaller than that of the liquid cavity 101, the radial section shapes and areas of the block 32 and the liquid cavity 101 are the same, the block 32 can limit the moving distance of the moving part 3, and meanwhile, the contact surface of the liquid cavity 101 for extruding the moving part 3 is larger.
Example six:
any combination of embodiments one to five is also included in the case where there is no technical conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The utility model provides a piston ring indicating device of hydraulic turbine ball valve, includes valve body (1) and ring body (2) of setting in valve body (1), and the flow direction of fluid matter removes its characterized in that in valve body (1) can be followed in ring body (2): the device also comprises a movable part (3) and an indicating component (4);
a liquid cavity (101) and a sliding cavity (102) are formed in the valve body (1), the liquid cavity (101) is isolated from the interior of the valve body (1), the sliding cavity (102) extends along the moving direction of the ring body (2), and two ends of the sliding cavity (102) are respectively communicated with the interior of the valve body (1) and the liquid cavity (101);
the movable piece (3) is arranged in the sliding cavity (102) and can move along the extending direction of the sliding cavity (102), one end of the movable piece (3) is abutted against the ring body (2) and the other end of the movable piece is inserted into the liquid cavity (101), a channel (301) is formed in the movable piece (3), and two ends of the channel (301) are respectively communicated with the liquid cavity (101) and the interior of the valve body (1);
the indicating component (4) is arranged on the movable piece (3) and can move synchronously with the movable piece (3), and the indicating component (4) can know that the ring body (2) moves towards the liquid cavity (101) or moves away from the liquid cavity (101) in the valve body (1).
2. The piston ring indicating device of a water turbine ball valve as claimed in claim 1, wherein: the indicating assembly (4) comprises a sliding block (41), a sliding groove (103) is further formed in the valve body (1), one end of the sliding groove (103) is communicated with the sliding cavity (102), the other end of the sliding groove (103) is communicated with the external environment, and the extending direction of the sliding groove (103) and the extending direction of the sliding cavity (102) are arranged in a crossed mode;
the sliding block (41) is arranged in the sliding groove (103), one end of the sliding block (41) is arranged on the movable piece (3), the other end of the sliding block (41) extends to the external environment, the width of the sliding block (41) in the extending direction of the sliding cavity (102) is smaller than that of the sliding groove (103) in the extending direction of the sliding cavity (102), and the sliding block (41) can move synchronously in the sliding groove (103) along the extending direction of the sliding cavity (102) along with the movable piece (3).
3. The piston ring indicating device of a ball valve of a water turbine as claimed in claim 2, wherein: the extending direction of the sliding chute (103) is vertical to the extending direction of the sliding cavity (102).
4. The piston ring indicating device of a ball valve of a water turbine as claimed in claim 2, wherein: the indicating assembly (4) further comprises an indicating plate (42) and two limiting pieces (43);
the indicating plate (42) is arranged at the end part of the sliding block (41) extending to the external environment;
the two limiting pieces (43) are respectively arranged on two sides of the indicating plate (42) along the moving direction of the sliding cavity (102).
5. The piston ring indicator of a hydraulic turbine ball valve as claimed in claim 4, wherein: the distance between the two limiting pieces (43) is the same as the movable maximum distance of the ring body (2).
6. The piston ring indicating device of a hydraulic turbine ball valve as set forth in claim 5, wherein: when the ring body (2) moves towards the direction far away from the liquid cavity (101), the fluid in the valve body (1) enters the liquid cavity (101) through the channel (301) and fills the liquid cavity (101), and meanwhile, the movable piece (3) is pushed to move towards the ring body (2) and abut against the ring body (2), so that the indicating plate (42) is driven to synchronously move along with the movable piece (3) and abut against one limiting piece (43);
when the ring body (2) moves towards the liquid cavity (101), the ring body (2) pushes the movable piece (3) which is supported on the ring body (2) to move synchronously, so that the volume of the part, inserted into the liquid cavity (101), of the movable piece (3) is increased, the fluid in the liquid cavity (101) is discharged into the valve body (1) through the channel (301), and meanwhile, the indicating plate (42) is driven to move synchronously along with the movable piece (3) and is supported on the other limiting piece (43).
7. The piston ring indicating device of a water turbine ball valve as claimed in claim 1, wherein: the movable piece (3) comprises a pin body (31) and a block body (32), the pin body (31) is arranged in the sliding cavity (102), the block body (32) is arranged at the end part, far away from the ring body (2), of the pin body (31) and arranged in the liquid cavity (101), and the length of the block body (32) in the extending direction of the sliding cavity (102) is smaller than that of the liquid cavity (101).
8. The piston ring indicator of a hydraulic turbine ball valve as claimed in claim 7, wherein: the inner diameter of the liquid cavity (101) is larger than that of the sliding cavity (102).
9. The piston ring indicator of a hydraulic turbine ball valve as claimed in claim 7, wherein: the pin body (31) and the sliding cavity (102) have the same radial cross section shape and area, and the block body (32) and the liquid cavity (101) have the same radial cross section shape and area.
10. The piston ring indicator of a hydraulic turbine ball valve as claimed in claim 7, wherein: the axial length of the pin body (31) is greater than the length of the sliding cavity (102) in the extending direction.
CN202210429208.XA 2022-04-22 2022-04-22 Piston ring indicating device of hydraulic turbine ball valve Active CN114738544B (en)

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Application Number Priority Date Filing Date Title
CN202210429208.XA CN114738544B (en) 2022-04-22 2022-04-22 Piston ring indicating device of hydraulic turbine ball valve

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Application Number Priority Date Filing Date Title
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CN114738544A true CN114738544A (en) 2022-07-12
CN114738544B CN114738544B (en) 2023-06-23

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101685196B1 (en) * 2016-06-03 2016-12-09 채희관 Device for multistage quantitative opening and closing of the ball valve
CN205956430U (en) * 2016-07-20 2017-02-15 林洁 Polyethylene ball valve
CN205978595U (en) * 2016-08-26 2017-02-22 浙江阳旭阀业有限公司 Ball valve with disk seat regulatory function
CN210510488U (en) * 2019-08-27 2020-05-12 上海科科阀门集团有限公司 Valve seat stroke indicating system
CN211039716U (en) * 2019-10-25 2020-07-17 湖北洪城通用机械有限公司 Electric double-sealing butterfly valve
CN214404770U (en) * 2021-02-02 2021-10-15 陕西格物普瑞自控工程有限公司 Ball valve for pump station

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101685196B1 (en) * 2016-06-03 2016-12-09 채희관 Device for multistage quantitative opening and closing of the ball valve
CN205956430U (en) * 2016-07-20 2017-02-15 林洁 Polyethylene ball valve
CN205978595U (en) * 2016-08-26 2017-02-22 浙江阳旭阀业有限公司 Ball valve with disk seat regulatory function
CN210510488U (en) * 2019-08-27 2020-05-12 上海科科阀门集团有限公司 Valve seat stroke indicating system
CN211039716U (en) * 2019-10-25 2020-07-17 湖北洪城通用机械有限公司 Electric double-sealing butterfly valve
CN214404770U (en) * 2021-02-02 2021-10-15 陕西格物普瑞自控工程有限公司 Ball valve for pump station

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Denomination of invention: A piston ring indicator device for ball valves in hydraulic turbines

Granted publication date: 20230623

Pledgee: Jingzhou Financing Guarantee Group Co.,Ltd.

Pledgor: HUBEI HONGCHENG GENERAL MACHINERY Co.,Ltd.

Registration number: Y2024980003519