CN117515212B - Oil leakage prevention valve for transformer oil tank - Google Patents
Oil leakage prevention valve for transformer oil tank Download PDFInfo
- Publication number
- CN117515212B CN117515212B CN202311840802.9A CN202311840802A CN117515212B CN 117515212 B CN117515212 B CN 117515212B CN 202311840802 A CN202311840802 A CN 202311840802A CN 117515212 B CN117515212 B CN 117515212B
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- sealing
- valve
- fixed
- cylinder
- rod
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- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 118
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 230000000712 assembly Effects 0.000 claims abstract description 13
- 238000000429 assembly Methods 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000000670 limiting effect Effects 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000003305 oil spill Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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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
- 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
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
-
- 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
- F16K35/00—Means to prevent accidental or unauthorised actuation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to the technical field of oil leakage prevention valves and discloses an oil leakage prevention valve for a transformer oil tank, which comprises a valve seat, a valve core arranged in the valve seat, a valve rod arranged on the valve core, sealing seats, sealing parts, a top groove and connecting mechanisms, wherein the two sealing seats are movably arranged in the valve seat, the two sealing parts are respectively arranged on the two sealing seats, the two sealing parts and the valve core form a sealing structure together, the top groove is formed in the top end of the valve rod, the two connecting mechanisms are arranged, and each connecting mechanism comprises two identical connecting assemblies. According to the invention, through the synergistic effect of the driving assembly, the air extraction assembly and the connecting assembly, the sealing element is separated from the valve core, so that friction between the valve core and the sealing element in an initial stage is effectively avoided, abrasion phenomenon is prevented, and no direct friction between the valve core and the sealing element is ensured in the rotating process of the valve core.
Description
Technical Field
The invention relates to the technical field of oil leakage prevention valves, in particular to an oil leakage prevention valve for a transformer oil tank.
Background
The oil leakage prevention valve of the transformer oil tank is a valve device for preventing oil leakage of the transformer oil tank, and when the oil tank leaks, the oil tank can be timely disconnected from the outside, so that the oil is prevented from continuing to leak, and the influence of accidents is reduced.
The oil leakage prevention function of a valve depends on the sealing performance of the valve, the sealing of the valve generally comprises a hard seal and a soft seal, the hard seal is realized by adopting contact between metals, the sealing is realized by precisely machining and pressure on the surfaces of the metals, the soft seal is realized by elastic materials such as rubber, polymers and the like, when the valve is closed, the elastic materials are compressed to form an effective seal, but when the valve is closed, both the hard seal and the soft seal are closed, friction inevitably occurs between a valve core and a sealing structure, the friction can lead to abrasion of the surface of the valve core and the surface of the sealing structure, the sealing performance is gradually reduced in long-term use, particularly for the hard seal, the abrasion is more remarkable due to the direct contact between the metals, the sealing performance is reduced with the increase of the abrasion, the valve leakage is caused in a closed state, and in addition, the service life of the valve core and the sealing structure can be shortened due to abrasion caused by the friction, and the more frequent maintenance and the higher operation cost can be caused.
Therefore, it is necessary to design an oil leakage prevention valve of a transformer oil tank to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an oil leakage prevention valve for a transformer oil tank.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a transformer tank leak protection oil valve, includes the disk seat, installs the inside case of disk seat and install the valve rod on the case still includes:
the two sealing seats are movably arranged in the valve seat;
the two sealing parts are respectively arranged on the two sealing seats, and the two sealing parts and the valve core form a sealing structure together;
the top groove is formed in the top end of the valve rod;
the two connecting mechanisms comprise two identical connecting assemblies, and the two sealing seats are connected with the valve seat through the connecting mechanisms;
the two limiting assemblies are movably connected between the two sealing seats and the valve seat through the limiting assemblies, and the limiting assemblies provide limiting for the movement of the sealing seats;
a drive assembly disposed on the valve stem;
the air extraction assembly is arranged at the bottom of the top groove and driven by the driving assembly, and when the air extraction assembly operates, the two sealing seats move synchronously.
As a preferred embodiment of the present invention, the connection assembly includes:
the outer cylinder body is fixed in the valve seat, is a cylinder with two closed ends, is hollow, and is provided with a through hole at one end;
the first sliding plug is hermetically and slidably connected in the outer cylinder body;
one end of the first spring is connected with the inner wall of the outer cylinder body, and the other end of the first spring is connected with the first sliding plug;
the connecting rod, the one end of connecting rod is fixed in on the first sliding plug, and the other end passes the wearing mouth and extends to the outside of outer barrel, the connecting rod is located between the outside one end of outer barrel and the sealing seat fixed connection.
As a preferred technical solution of the present invention, the limiting assembly includes:
the two limiting blocks are fixed on the outer peripheral surface of the sealing seat;
the two limiting grooves are formed in the inner wall of the valve seat, and the two limiting blocks are respectively and slidably connected in the two limiting grooves.
As a preferred embodiment of the present invention, the driving assembly includes:
the driving rod is movably assembled in the top groove;
the sliding block is fixedly sleeved on the driving rod;
the sliding groove is formed in the groove wall of the top groove, and the sliding block is connected in the sliding groove in a sliding manner;
the fixed cylinder is fixed at the top end of the valve rod, one end of the fixed cylinder is closed, the other end of the fixed cylinder is open, the closed end of the fixed cylinder is provided with an avoidance opening, and the top end of the driving rod penetrates through the avoidance opening to extend to the outside of the fixed cylinder and is provided with a handle;
the stop block is fixed on the inner wall of the fixed cylinder;
and the driving block is fixed on the outer circumferential surface of the driving rod.
As a preferred embodiment of the present invention, the air extraction assembly includes:
the sealing cylinder is fixed at the bottom of the top groove, both ends of the sealing cylinder are closed, the inside of the sealing cylinder is hollow, and a through hole is formed in one end of the sealing cylinder;
the second sliding plug is connected in the sealing cylinder in a sealing sliding manner;
one end of the connecting rod is fixed on the second sliding plug, the other end of the connecting rod penetrates through the through hole and extends to the outside of the sealing cylinder, and one end of the connecting rod positioned outside the sealing cylinder is rotationally assembled on the driving assembly;
one end of the second spring is connected with the inner surface of the sealing cylinder, and the other end of the second spring is connected with the second sliding plug;
and one ends of the four communicating pipes are communicated with the sealing cylinder, and the other ends of the four communicating pipes are communicated with the connecting mechanism.
As a preferred embodiment of the present invention, the positioning assembly includes:
the fixed ring is fixedly sleeved on the valve rod;
the positioning ring is sleeved on the valve rod in a sliding manner, and the fixing ring and the positioning ring are arranged in a vertically opposite manner;
a plurality of positioning teeth are arranged at the bottom of the fixed ring and the top of the positioning ring;
and one end of the spring III is connected with the valve seat, and the other end of the spring III is connected with the positioning ring.
As a preferable technical scheme of the invention, the valve rod, the driving rod, the fixed cylinder and the sealing cylinder are coaxially arranged.
As a preferable technical scheme of the invention, the sections of the sliding block and the sliding groove are of annular structures, and the outer surface of the sliding block is mutually attached to the groove wall of the sliding groove.
The invention has the following beneficial effects:
1. in the initial stage of opening the valve, the valve core does not directly rotate along with the handle, but the sealing element is separated from the valve core through the synergistic effect of the driving assembly, the air extraction assembly and the connecting assembly, so that friction between the valve core and the sealing element in the initial stage is effectively avoided, abrasion phenomenon is prevented, the sealing effect between the sealing element and the valve core is maintained by ensuring that no direct friction exists between the sealing element and the valve core in the rotating process of the valve core, the valve is critical to long-term stable operation of the valve and oil leakage prevention, and the abrasion speed of parts is reduced by avoiding friction in the initial stage, particularly friction between the sealing element and the valve core, so that the service life of the valve is prolonged;
2. through the meshing effect of a plurality of positioning teeth on fixed ring and the positioning ring, realized the fixed to valve rod position, this position stability of valve under the specific state of having guaranteed prevents unexpected removal or rotation under the non-artificial condition, and this design has effectively avoided the staff to open the valve under the state that the maloperation arouses further rotation, has increased the security and the controllability of operation, and this design has a mechanical protection mechanism simultaneously, has restricted the rotation of valve rod through the mode of meshing to the problem that unexpected damage or excessive operation probably arouse has been reduced.
Drawings
FIG. 1 is a schematic diagram of an explosion structure of an oil leakage prevention valve of a transformer oil tank;
FIG. 2 is a schematic diagram of an explosion structure of an oil leakage prevention valve of a transformer oil tank at another view angle;
FIG. 3 is a schematic view of the valve seat and seal seat;
FIG. 4 is a schematic cross-sectional view of a valve cartridge;
FIG. 5 is an enlarged view of a portion of the structure of FIG. 4;
FIG. 6 is an enlarged view of the structure at A of FIG. 3;
FIG. 7 is an enlarged view of the structure at B of FIG. 2;
FIG. 8 is an enlarged view of the structure at C of FIG. 1;
fig. 9 is an enlarged view of a partial structure of fig. 1.
In the figure: 1. a valve seat; 2. a sealing seat; 3. a seal; 4. a valve core; 5. a valve stem; 6. a top groove; 71. an outer cylinder; 72. a first slide plug; 73. a first spring; 74. a connecting rod; 81. a limiting block; 82. a limit groove; 91. a driving rod; 92. a slide block; 93. a chute; 94. a fixed cylinder; 95. a stop block; 96. a driving block; 101. a sealing cylinder; 102. a second slide plug; 103. a connecting rod; 104. a second spring; 105. a communicating pipe; 11. a handle; 111. a fixing ring; 112. a positioning ring; 113. positioning teeth; 114. and a third spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 and 2, an oil leakage prevention valve for a transformer oil tank comprises a valve seat 1, a valve core 4 arranged in the valve seat 1, and a valve rod 5 arranged on the valve core 4, and further comprises two sealing seats 2, sealing elements 3 and a top groove 6, wherein the two sealing seats 2 are movably arranged in the valve seat 1, the two sealing elements 3 are arranged in the two sealing seats 2, the two sealing elements 3 are respectively arranged on the two sealing seats 2, the two sealing elements 3 and the valve core 4 form a sealing structure together, the top groove 6 is arranged at the top end of the valve rod 5, two connecting mechanisms are arranged on the valve seat 1, each connecting mechanism comprises two identical connecting assemblies, and the two sealing seats 2 are connected with the valve seat 1 through the connecting mechanisms.
The connecting assembly comprises an outer cylinder 71, a first sliding plug 72, a first spring 73 and a connecting rod 74, wherein the outer cylinder 71 is fixed in the valve seat 1, the outer cylinder 71 is a cylinder with two closed ends, a through hole is formed in one end of the outer cylinder 71, the first sliding plug 72 is connected in the outer cylinder 71 in a sealing sliding mode, one end of the first spring 73 is connected with the inner wall of the outer cylinder 71, the other end of the first spring 73 is connected with the first sliding plug 72, one end of the connecting rod 74 is fixed on the first sliding plug 72, the other end of the connecting rod 74 penetrates through the through hole to extend to the outer part of the outer cylinder 71, the connecting rod 74 is fixedly connected between one end of the outer cylinder 71 and the sealing seat 2, the outer cylinder 71 and the connecting rod 74 play a limiting role in the movement of the sealing seat 2 in the moving process of the sealing seat 2 so as to ensure the stability of the sealing seat 2 in the moving process, when the valve is in the closing state, the connecting rod 74 has a trend of moving towards the outer cylinder 71 under the elastic force of the first spring 73, at the moment, the two sealing seats 2 have trends of pressing the valve cores 4, and the two sealing pieces 3 can tightly press the valve cores 4, so as to ensure the sealing performance of the valve in the closing state.
Referring to fig. 3, two limiting assemblies are arranged on the valve seat 1, two sealing seats 2 are movably connected with the valve seat 1 through the limiting assemblies, and the limiting assemblies provide limiting for movement of the sealing seats 2.
Limiting component includes stopper 81 and spacing groove 82, and stopper 81 is provided with two, and two stopper 81 are all fixed at sealing seat 2's outer peripheral face, and spacing groove 82 is provided with two, and two spacing groove 82 are all offered on disk seat 1's inner wall, and two stopper 81 sliding connection respectively are in two spacing grooves 82, and sealing seat 2 is at the in-process of removal, and two stopper 81 play spacing effect with two spacing grooves 82 to sealing seat 2's removal to guarantee sealing seat 2 in-process stability.
Referring to fig. 4, 5, 6 and 9, the valve seat 1 is provided with a driving assembly provided on the valve stem 5. The drive assembly comprises a drive rod 91, a slide block 92, a slide groove 93, a fixed cylinder 94, a stop block 95 and a drive block 96, wherein the drive rod 91 is movably assembled in the jacking groove 6, the slide block 92 is fixedly sleeved on the drive rod 91, the slide groove 93 is formed in the groove wall of the jacking groove 6, the slide block 92 is slidably connected in the slide groove 93, the sections of the slide block 92 and the slide groove 93 are of annular structures, the outer surface of the slide block 92 and the groove wall of the slide groove 93 are mutually attached, the fixed cylinder 94 is fixed at the top end of the valve rod 5, one end of the fixed cylinder 94 is closed, the other end of the fixed cylinder 94 is open, an avoidance opening is formed in the closed end of the fixed cylinder 94, the top end of the drive rod 91 penetrates through the avoidance opening to the outside of the fixed cylinder 94, a handle 11 is assembled, the stop block 95 is fixed on the inner wall of the fixed cylinder 94, the drive block 96 is fixed on the outer peripheral surface of the drive rod 91, when a valve is required to be opened, a worker pulls the handle 11 first, the drive rod 91 can be driven to move upwards along with the upward movement of the drive rod 91, the drive block 96 can also be correspondingly moved upwards, the drive block 91 is fixed in the upward movement, the slide block 94 is fixed cylinder 94 is fixed in the upper movement, the slide block 92 is driven to move the slide rod 92, when the slide block 95 is driven to move the slide block 95, the drive block 95 is driven to move the slide block 95, and the drive block 95 can be driven to move the valve rod 95 to move in the inside the slide rod 95, and the drive block 95 and the drive block is driven to rotate, and the drive block 95 can be driven to rotate and move the slide block 95 in the slide block and move.
Referring to fig. 5, an air extraction assembly is disposed on the valve seat 1 and is disposed at the bottom of the top groove 6, and the air extraction assembly is driven by a driving assembly, so that when the air extraction assembly operates, the two sealing seats 2 move synchronously.
The air extraction assembly comprises a sealing cylinder 101, a second sliding plug 102, a connecting rod 103, a second spring 104 and a communicating pipe 105, wherein the sealing cylinder 101 is fixed at the bottom of the top groove 6, two ends of the sealing cylinder 101 are of a closed structure, the inside of the sealing cylinder is hollow, one end of the sealing cylinder 101 is provided with a through hole, the second sliding plug 102 is connected in the sealing cylinder 101 in a sealing sliding manner, one end of the connecting rod 103 is fixed on the second sliding plug 102, the other end of the connecting rod 103 penetrates through the through hole to extend to the outside of the sealing cylinder 101, one end of the connecting rod 103 is positioned at the outer end of the sealing cylinder 101 and is rotationally assembled at the bottom end of the driving rod 91, one end of the second spring 104 is connected with the inner wall of the sealing cylinder 101, the other end of the second spring 104 is connected with the second sliding plug 102, the communicating pipe 105 is provided with four communicating pipes, one ends of the four communicating pipes 105 are all communicated with the sealing cylinder 101, the other ends of the four communicating pipes 105 are respectively communicated with the four outer cylinders 71, the valve rod 5, the driving rod 91, the fixing cylinder 94 and the sealing cylinder 101 are coaxially arranged, when the second sliding plug 102 moves upwards, the sealing cylinder 101 can perform air extraction actions, and air extraction actions are performed through the four outer cylinders 71, one end of the four communicating pipes 71 is separated from the four outer cylinders, and the four outer cylinders 71, and the two inner cylinders are separated from the four outer cylinders 71, and the four outer cylinders 2 can be separated by the four sealing cylinders, and the two sealing bodies and the two bodies 72.
Referring to fig. 8, the positioning assembly includes a fixing ring 111, a positioning ring 112, positioning teeth 113 and a third spring 114, the fixing ring 111 is fixedly sleeved on the valve rod 5, the positioning ring 112 is slidably sleeved on the valve rod 5, the fixing ring 111 and the positioning ring 112 are vertically and oppositely arranged, a plurality of positioning teeth 113 are respectively arranged at the bottom of the fixing ring 111 and the top of the positioning ring 112, one end of the third spring 114 is connected with the valve seat 1, the other end of the third spring is connected with the positioning ring 112, when the valve needs to be opened, a worker firstly presses down the positioning ring 112 to enable the positioning ring 112 to move towards the valve seat 1 until a plurality of positioning teeth 113 on the positioning ring 112 are separated from a plurality of positioning teeth 113 on the fixing ring 111, the limiting action of a plurality of positioning teeth 113 is lacked, the valve rod 5 can rotate freely, after the opening and closing degree of the valve is adjusted, the worker loosens the positioning ring 112 at the moment, the positioning ring 112 moves upwards under the action of the third spring 114 until a plurality of positioning teeth 113 on the positioning ring 112 are mutually meshed with a plurality of positioning teeth 113 on the fixing ring 111, the valve rod 5 is prevented from playing a fixing role, and the stability of the valve is ensured under the condition that the valve is not rotated manually. The positioning ring 112 is relatively fixed with the valve seat 1, so that the positioning ring 112 can only relatively slide with the valve seat 1 and cannot relatively rotate with the valve seat 1. An arc-shaped plate can be fixed on the valve seat 1, an internal spline is arranged on the arc-shaped plate, and an external spline meshed with the internal spline is arranged on the positioning ring 112.
The specific working principle of the invention is as follows:
when the oil leakage prevention valve for the transformer oil tank is used, when the valve is in a closed state, under the action of the elastic force of the second spring 104, the second sliding plug 102 is positioned at the bottom of the sealing cylinder 101, the sliding block 92 is positioned at the bottom of the sliding groove 93, the driving block 96 is positioned in the top groove 6, under the action of the elastic force of the first spring 73, the connecting rod 74 has a tendency to move towards the outside of the outer cylinder 71, at the moment, the two sealing seats 2 have a tendency to press the valve core 4, and the two sealing pieces 3 can tightly press the valve core 4, so that the sealing performance of the valve in the closed state is ensured.
When the valve needs to be opened, a worker firstly presses down the positioning ring 112 to enable the positioning ring 112 to move towards the valve seat 1 until a plurality of positioning teeth 113 on the positioning ring 112 are separated from a plurality of positioning teeth 113 on the fixing ring 111, the valve rod 5 can rotate freely, then, when the worker pulls up the handle 11 and moves up the handle 11, the driving rod 91 can be driven to move up, the driving rod 91 can pull the connecting rod 103 to drive the second sliding plug 102 to move up, when the second sliding plug 102 moves up, the sealing cylinder 101 can perform air suction action, air in the four outer cylinders 71 is sucked through the four connecting pipes 105, when the air in the four outer cylinders 71 is sucked out, the four first sliding plugs 72 can move in the four outer cylinders 71 under the action of negative pressure, so that the four connecting rods 74 can be respectively retracted into the four outer cylinders 71, the two sealing seats 2 can be separated from each other, and the two sealing elements 3 can be separated from the valve core 4.
Along with the upward movement of the driving rod 91, the driving block 96 moves upward along with the upward movement of the driving rod 91, the sliding block 92 moves in the sliding groove 93, when the sliding block 92 moves to the top position of the sliding groove 93, the driving block 96 just moves to the inside of the fixed cylinder 94, at this time, the handle 11 is rotated by a worker, the driving rod 91 can drive the driving block 96 to rotate when rotating, the driving block 96 can be contacted with the stop block 95 in the rotating process and push the stop block 95 to rotate, the fixed cylinder 94 can be driven to rotate when stressed, the valve rod 5 can rotate along with the rotation, the valve rod 5 can drive the valve core 4 to rotate when rotating, so that the valve is gradually opened, and before the valve core 4 rotates, the two sealing pieces 3 are separated from each other and separated from the valve core 4, the valve core 4 can not rub with the two sealing pieces 3 in the rotating process.
After the opening and closing degree of the valve is adjusted, a worker releases the positioning ring 112, at the moment, the positioning ring 112 moves upwards under the action of the third spring 114 until a plurality of positioning teeth 113 on the positioning ring 112 are meshed with a plurality of positioning teeth 113 on the fixed ring 111, at the moment, the plurality of positioning teeth 113 can fix the valve rod 5, the valve rod 5 is prevented from rotating under the condition of no personnel, and the stability of the working state of the valve is ensured.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The utility model provides a transformer tank leak protection oil valve, includes disk seat (1), installs case (4) inside disk seat (1) and install valve rod (5) on case (4), its characterized in that still includes:
the two sealing seats (2) are movably arranged in the valve seat (1);
the two sealing elements (3), the two sealing elements (3) are respectively arranged on the two sealing seats (2), and the two sealing elements (3) and the valve core (4) form a sealing structure together;
the top groove (6) is formed in the top end of the valve rod (5);
the two connecting mechanisms comprise two identical connecting assemblies, and the two sealing seats (2) are connected with the valve seat (1) through the connecting mechanisms;
the two limiting assemblies are movably connected between the two sealing seats (2) and the valve seat (1) through the limiting assemblies, and the limiting assemblies provide limiting for the movement of the sealing seats (2);
the driving assembly is arranged on the valve rod (5);
the air extraction assembly is arranged at the bottom of the top groove (6), and driven by the driving assembly, and when the air extraction assembly operates, the two sealing seats (2) synchronously move;
the positioning assembly is arranged between the valve seat (1) and the valve rod (5) and is used for limiting the opening and closing degree of the valve rod (5);
the connection assembly includes:
the outer cylinder body (71), the outer cylinder body (71) is fixed in the valve seat (1), the outer cylinder body (71) is a cylinder with two closed ends, the inside of the outer cylinder body is hollow, and a through hole is formed in one end of the outer cylinder body (71);
a first slide plug (72), wherein the first slide plug (72) is in sealed sliding connection in the outer cylinder body (71);
one end of the first spring (73) is connected with the inner wall of the outer cylinder body (71), and the other end of the first spring is connected with the first sliding plug (72);
one end of the connecting rod (74) is fixed on the first sliding plug (72), the other end of the connecting rod (74) penetrates through the through hole and extends to the outside of the outer cylinder body (71), and one end of the connecting rod (74) positioned outside the outer cylinder body (71) is fixedly connected with the sealing seat (2);
the drive assembly includes:
the driving rod (91), the said driving rod (91) is assembled in the roof groove (6) movably;
the sliding block (92) is fixedly sleeved on the driving rod (91);
the sliding groove (93) is formed in the groove wall of the top groove (6), and the sliding block (92) is connected in the sliding groove (93) in a sliding way;
the fixed cylinder (94), the fixed cylinder (94) is fixed on the top end of the valve rod (5), one end of the fixed cylinder (94) is closed, the other end of the fixed cylinder is open, the closed end of the fixed cylinder (94) is provided with an avoidance opening, and the top end of the driving rod (91) passes through the avoidance opening to extend to the outside of the fixed cylinder (94) and is provided with a handle (11);
a stopper (95), wherein the stopper (95) is fixed on the inner wall of the fixed cylinder (94);
a drive block (96), the drive block (96) being fixed on the outer peripheral surface of the drive lever (91);
the air extraction assembly includes:
the sealing cylinder (101), the sealing cylinder (101) is fixed at the bottom of the top groove (6), both ends of the sealing cylinder (101) are closed, the inside of the sealing cylinder is hollow, and a through hole is formed at one end of the sealing cylinder (101);
a second slide plug (102), the second slide plug (102) is in sealed sliding connection in the sealed cylinder (101);
one end of the connecting rod (103) is fixed on the second sliding plug (102), the other end of the connecting rod (103) penetrates through the through hole and extends to the outside of the sealing cylinder (101), and one end of the connecting rod (103) positioned outside the sealing cylinder (101) is rotatably assembled on the driving assembly;
the second spring (104), one end of the second spring (104) is connected with the inner surface of the sealing cylinder (101), and the other end is connected with the second sliding plug (102);
and the four communicating pipes (105) are communicated with the sealing cylinder (101) at one ends of the four communicating pipes (105), and the other ends of the four communicating pipes (105) are communicated with the connecting mechanism.
2. The oil spill resistant valve of a transformer tank of claim 1, wherein the limiting assembly comprises:
the two limiting blocks (81) are respectively fixed on the outer peripheral surface of the sealing seat (2);
the two limiting grooves (82) are formed in the inner wall of the valve seat (1), and the two limiting blocks (81) are respectively and slidably connected in the two limiting grooves (82).
3. The oil spill valve of claim 1, wherein said positioning assembly comprises:
the fixed ring (111), the fixed ring (111) is fixedly sleeved on the valve rod (5);
the positioning ring (112) is sleeved on the valve rod (5) in a sliding way, and the fixing ring (111) and the positioning ring (112) are arranged in an up-down opposite way;
a plurality of positioning teeth (113), a plurality of positioning teeth (113) are arranged at the bottom of the fixed ring (111) and the top of the positioning ring (112);
and one end of the spring III (114) is connected with the valve seat (1), and the other end of the spring III (114) is connected with the positioning ring (112).
4. The oil leakage prevention valve for the transformer oil tank according to claim 1, wherein the sections of the sliding block (92) and the sliding groove (93) are of annular structures, and the outer surface of the sliding block (92) is mutually attached to the groove wall of the sliding groove (93).
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| CN202311840802.9A CN117515212B (en) | 2023-12-29 | 2023-12-29 | Oil leakage prevention valve for transformer oil tank |
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| CN202311840802.9A CN117515212B (en) | 2023-12-29 | 2023-12-29 | Oil leakage prevention valve for transformer oil tank |
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| CN117515212B true CN117515212B (en) | 2024-04-09 |
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| KR20170052174A (en) * | 2015-11-04 | 2017-05-12 | 대우조선해양 주식회사 | Ball valve with holding seat |
| CN111425617A (en) * | 2020-03-05 | 2020-07-17 | 浙江中德自控科技股份有限公司 | Sealed ball valve of preventing leaking |
| CN214367913U (en) * | 2021-03-23 | 2021-10-08 | 浙江力诺流体控制科技股份有限公司 | Take fire resistive construction's soft seal ball valve |
| CN215908433U (en) * | 2021-07-09 | 2022-02-25 | 浙江川一阀门有限公司 | High-temperature-resistant high-pressure-resistant bidirectional wear-free ball valve |
| CN114396486A (en) * | 2022-01-06 | 2022-04-26 | 东营联合石化有限责任公司 | Be applied to coke drum gasoline adsorption equipment's wear-resisting ball valve |
| CN114962696A (en) * | 2022-07-11 | 2022-08-30 | 江苏竹箕阀业有限公司 | Be used for polycrystalline silicon production to carry wear-resisting ball valve with silica flour of being convenient for |
| CN116181928A (en) * | 2022-09-19 | 2023-05-30 | 欧德克阀业股份有限公司 | Ball valve of manual operation seal structure |
-
2023
- 2023-12-29 CN CN202311840802.9A patent/CN117515212B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5111839A (en) * | 1991-04-24 | 1992-05-12 | Rogerson Aircraft Corporation | Airplane toilet drain valve assembly |
| US5440969A (en) * | 1994-03-09 | 1995-08-15 | Shin; Wan-Sheng | Cylinder-operated and spring-loaded driving mechanism for a ball valve |
| KR20170052174A (en) * | 2015-11-04 | 2017-05-12 | 대우조선해양 주식회사 | Ball valve with holding seat |
| CN111425617A (en) * | 2020-03-05 | 2020-07-17 | 浙江中德自控科技股份有限公司 | Sealed ball valve of preventing leaking |
| CN214367913U (en) * | 2021-03-23 | 2021-10-08 | 浙江力诺流体控制科技股份有限公司 | Take fire resistive construction's soft seal ball valve |
| CN215908433U (en) * | 2021-07-09 | 2022-02-25 | 浙江川一阀门有限公司 | High-temperature-resistant high-pressure-resistant bidirectional wear-free ball valve |
| CN114396486A (en) * | 2022-01-06 | 2022-04-26 | 东营联合石化有限责任公司 | Be applied to coke drum gasoline adsorption equipment's wear-resisting ball valve |
| CN114962696A (en) * | 2022-07-11 | 2022-08-30 | 江苏竹箕阀业有限公司 | Be used for polycrystalline silicon production to carry wear-resisting ball valve with silica flour of being convenient for |
| CN116181928A (en) * | 2022-09-19 | 2023-05-30 | 欧德克阀业股份有限公司 | Ball valve of manual operation seal structure |
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|---|---|
| CN117515212A (en) | 2024-02-06 |
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