CN113357235A - Detachable overhaul sealing ingot locking mechanism for large ball valve - Google Patents
Detachable overhaul sealing ingot locking mechanism for large ball valve Download PDFInfo
- Publication number
- CN113357235A CN113357235A CN202110777149.0A CN202110777149A CN113357235A CN 113357235 A CN113357235 A CN 113357235A CN 202110777149 A CN202110777149 A CN 202110777149A CN 113357235 A CN113357235 A CN 113357235A
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- CN
- China
- Prior art keywords
- locking
- wall
- bush
- ball valve
- connecting pipe
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 title claims abstract description 16
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 25
- 230000009471 action Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16B1/02—Means for securing elements of mechanisms after operation
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- 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
-
- 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)
- Valve Housings (AREA)
- Details Of Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a detachable overhaul sealing ingot locking mechanism of a large ball valve, which comprises a locking long rod, an upstream connecting pipe flange and a locking lining; the inner wall of the locking bush is in threaded connection with the outer wall of the locking long rod, and the outer wall of the locking bush is in threaded connection with the inner wall of the flange of the upstream connecting pipe; the diameter of the outer end of the locking bush is larger than that of the inner end; correspondingly, the diameter of the outer end screw hole of the upstream connecting pipe flange is larger than that of the inner end screw hole. The diameter of the outer end of the locking bush is set to be larger than that of the inner end of the locking bush, and the shape of the flange of the upstream connecting pipe is correspondingly set; when the phenomenon of fine thread biting of the locking long rod and the locking lining is generated, the locking lining can be directly rotated, the long rod and the lining are removed from the ball valve body together, the locking lining and the locking long rod which are updated are not required to be hung out of a valve, normal operation of a unit is not influenced, and economic loss caused by reduction is reduced.
Description
Technical Field
The invention relates to the technical field of water turbines, in particular to a large ball valve detachable overhaul sealing locking ingot mechanism.
Background
The water turbine is usually provided with a large valve at the volute and used for cutting off a power generation water source of the water turbine, and is one of main equipment of a hydropower station. The large ball valve comprises a valve body, a valve, an overhaul seal, a working seal, a servomotor, a bypass valve and the like, wherein the overhaul seal is provided with a mechanical ingot locking mechanism to ensure the safety of overhaul operation of personnel entering the equipment. When the water turbine or the ball valve is overhauled, the ball valve is required to be put into maintenance sealing and the mechanical locking ingot mechanism is required to be put into maintenance sealing, so that the safety of maintenance operation of entering equipment personnel is ensured.
In the in-service use discovery, because of overhauing sealed mechanical locking spindle mechanism screw rod and being fine thread structure, when "bite" phenomenon appears in locking spindle pole screw thread and locking spindle bush screw thread, can cause the unable condition of moving back of throwing of locking spindle stock. The unable locking ingot stock that drops into can lead to the maintenance operation personnel work safety can't obtain guaranteeing, can't withdraw from the locking ingot stock can lead to the unable normal work of equipment.
As shown in fig. 1, when the conventional maintenance sealing locking mechanism has a locking long rod thread occlusion phenomenon (such as the damage of the locking long rod 1 or the locking bush 2), the ball valve needs to be lifted out integrally, the ball valve upstream connecting pipe flange 3 is disassembled, and then the locking long rod 1 or the locking bush 2 is replaced. The removal of the ball valve requires the complete water cut-off of a power station, which not only affects the power generation of equipment, but also has extra construction cost, and causes huge economic loss (millions of yuan).
Therefore, a detachable overhaul sealing locking ingot mechanism of a large ball valve needs to be developed to solve the problems.
Disclosure of Invention
The invention aims to solve the problems and designs a detachable overhaul sealing locking ingot mechanism of a large ball valve.
The invention realizes the purpose through the following technical scheme:
large-scale ball valve is detachable overhauls sealed locking spindle mechanism, includes:
locking the long rod;
an upstream connection pipe flange;
a locking bush; the inner wall of the locking bush is in threaded connection with the outer wall of the locking long rod, and the outer wall of the locking bush is in threaded connection with the inner wall of the flange of the upstream connecting pipe; the diameter of the outer end of the locking bush is larger than that of the inner end; correspondingly, the diameter of the outer end screw hole of the upstream connecting pipe flange is larger than that of the inner end screw hole.
Specifically, the overhaul sealing ingot locking mechanism further comprises a locking short rod, the first end of the locking short rod is connected with the action end of the locking long rod, and the second end of the locking short rod is used for pushing the movable ring for overhauling sealing.
Specifically, the inner wall of the locking bush is in threaded connection with an external thread on the locking long rod through a fine thread, and the outer wall of the locking bush is in threaded connection with an internal thread of the upstream connecting pipe flange through a coarse thread.
In particular, the outer wall of the locking bush comprises a plurality of different sized diameters, and correspondingly, the inner wall of the upstream connector pipe flange comprises a plurality of different sized diameters.
In particular, the outer wall of the locking bush comprises two different sizes of diameter, correspondingly, the inner wall of the upstream connecting pipe flange comprises two different sizes of diameter.
The invention has the beneficial effects that:
the diameter of the outer end of the locking bush is set to be larger than that of the inner end of the locking bush, and the shape of the flange of the upstream connecting pipe is correspondingly set; when the phenomenon of fine thread biting of the locking long rod and the locking lining is generated, the locking lining can be directly rotated, the long rod and the lining are removed from the ball valve body together, the locking lining and the locking long rod which are updated are not required to be hung out of a valve, normal operation of a unit is not influenced, and economic loss caused by reduction is reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration;
FIG. 2 is a schematic structural diagram of the present application;
wherein, 1-locking long rod; 2-a locking bush; 3-an upstream connecting pipe flange; 4-locking the short bar; 5, overhauling and sealing; 6-ball valve end cover; 7-ball valve body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 2, the detachable overhaul sealing locking mechanism for large ball valve includes:
locking long rod 1;
an upstream connecting pipe flange 3;
a locking bush 2; the inner wall of the locking bush 2 is in threaded connection with the external thread of the outer wall of the locking long rod 1 through a fine thread, and the outer wall of the locking bush 2 is in threaded connection with the internal thread of the inner wall of the upstream connecting pipe flange 3 through a coarse thread (the coarse thread can bear large force and is not easy to damage); the locking bush 2 comprises a first outer diameter section and a second outer diameter section, the outer diameter of the first outer diameter section is larger than that of the second outer diameter section, the first outer diameter section is arranged at the outer end, and the second outer diameter section is arranged at the inner end; correspondingly, the upstream connecting pipe flange 3 internally comprises a first internal thread section and a second internal thread section, the diameter of the first internal thread section is larger than that of the second internal thread section, the first internal thread section is arranged at the outer end, the second internal thread section is arranged at the inner end, the external thread on the first external diameter section is matched with the internal thread of the first internal thread section, and the external thread on the second external diameter section is matched with the internal thread of the second internal thread section;
the first end of the locking short rod 4 is connected with the action end of the locking long rod 1, and the second end of the locking short rod 4 is used for pushing the movable ring of the maintenance seal 5. Also shown in fig. 2 are a ball valve end cap 6, a ball valve body 7, which is prior art and not described herein.
The diameter of the outer end of the locking bush 2 is set to be larger than that of the inner end, and the shape of the upstream connecting pipe flange 3 is correspondingly set; when the phenomenon of fine thread biting of the locking long rod and the locking lining is generated, the locking lining can be directly rotated, the long rod and the lining are removed from the upstream connecting pipe flange 3 together, and then the new locking lining and the new locking long rod are replaced without hanging out a valve, so that the normal operation of a unit is not influenced, and the economic loss caused by reduction is reduced.
In this application lock spindle stock and lock spindle bush are with thin threaded connection, and the lock spindle stock can freely the screw in the lock spindle bush and unscrew, and lock spindle stock screw in promotes the lock spindle quarter butt, and the sealed 5 rotating rings of lock spindle quarter butt promotion maintenance realize mechanical lock spindle function.
When the phenomenon that the locking long rod is engaged with the fine threads of the locking lining, the locking lining can be directly rotated, the locking long rod and the locking lining are unscrewed from the upstream connecting pipe flange 3 together to be detached, and then a new locking lining and a new locking long rod can be replaced without hanging out a valve, so that the normal operation of a unit is not influenced. The main meaning of this application is that will overhaul sealed 5 locking spindle mechanisms and become detachable, can avoid lifting by crane ball valve body 7 and the power station and cut off water entirely, does not influence the power generation of power station, can avoid the huge loss that leads to the fact from this.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (5)
1. Large-scale ball valve is detachable overhauls sealed locking spindle mechanism, its characterized in that includes:
locking the long rod;
an upstream connection pipe flange;
a locking bush; the inner wall of the locking bush is in threaded connection with the outer wall of the locking long rod, and the outer wall of the locking bush is in threaded connection with the inner wall of the flange of the upstream connecting pipe; the diameter of the outer end of the locking bush is larger than that of the inner end; correspondingly, the diameter of the outer end screw hole of the upstream connecting pipe flange is larger than that of the inner end screw hole.
2. The detachable overhaul sealing locking mechanism of a large ball valve according to claim 1, further comprising a locking short rod, wherein a first end of the locking short rod is connected with an action end of the locking long rod, and a second end of the locking short rod is used for pushing a movable ring for overhauling sealing.
3. The detachable overhaul sealing ingot locking mechanism of the large ball valve according to claim 1, wherein the inner wall of the locking bush is in threaded connection with the external thread on the long locking rod through a fine thread, and the outer wall of the locking bush is in threaded connection with the internal thread of the upstream connecting pipe flange through a coarse thread.
4. A large ball valve removable service seal locking pig mechanism as claimed in claim 1, wherein the outer wall of the locking bush comprises a plurality of different sized diameters, and correspondingly, the inner wall of the upstream connector flange comprises a plurality of different sized diameters.
5. A large ball valve detachable service seal locking pig mechanism according to claim 4, characterized in that the outer wall of the locking bush comprises two different sizes of diameters, correspondingly, the inner wall of the upstream connecting pipe flange comprises two different sizes of diameters.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110777149.0A CN113357235A (en) | 2021-07-09 | 2021-07-09 | Detachable overhaul sealing ingot locking mechanism for large ball valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110777149.0A CN113357235A (en) | 2021-07-09 | 2021-07-09 | Detachable overhaul sealing ingot locking mechanism for large ball valve |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113357235A true CN113357235A (en) | 2021-09-07 |
Family
ID=77538775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110777149.0A Pending CN113357235A (en) | 2021-07-09 | 2021-07-09 | Detachable overhaul sealing ingot locking mechanism for large ball valve |
Country Status (1)
Country | Link |
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CN (1) | CN113357235A (en) |
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2021
- 2021-07-09 CN CN202110777149.0A patent/CN113357235A/en active Pending
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