CN113028091A - Ball valve - Google Patents
Ball valve Download PDFInfo
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- CN113028091A CN113028091A CN202110221280.9A CN202110221280A CN113028091A CN 113028091 A CN113028091 A CN 113028091A CN 202110221280 A CN202110221280 A CN 202110221280A CN 113028091 A CN113028091 A CN 113028091A
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- 238000004891 communication Methods 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims description 58
- 238000013016 damping Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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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
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
- F16K31/055—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation for rotating valves
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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
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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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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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
- F16K5/0647—Spindles or actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention belongs to the technical field of pipeline valves, and discloses a ball valve which comprises a valve body and a valve ball; the valve body is provided with an inlet, an outlet, an inlet flow passage, an outlet flow passage and a control groove, and the valve ball is positioned in the valve body and is provided with a control plate and a through hole; the control plate extends into the control groove, the control groove is divided into a first control groove and a second control groove, the control plate can reciprocate along the control groove to drive the valve ball to rotate relative to the valve body, and the communication relation between the through hole and the inlet and the outlet is controlled; one end of the inlet flow passage is communicated with the inlet, the other end of the inlet flow passage is selectively communicated with the first control groove and the second control groove, one end of the outlet flow passage is communicated with the outlet, and the other end of the outlet flow passage is selectively communicated with the second control groove and the first control groove. The ball valve is used in a high-pressure pipeline, is low in manufacturing cost, has smaller weight and volume, and has higher installation flexibility and use convenience.
Description
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to a ball valve.
Background
The opening and closing piece of the ball valve is a ball body provided with a through hole, and the opening and closing piece rotates around the axis vertical to the channel, so that the purpose of opening and closing the channel is achieved. The ball valve has the advantages of small fluid resistance, simple structure, tightness, reliability, convenient operation, rapid opening and closing, wide application range and the like, and is widely applied to various departments of petroleum, chemical industry, power generation, paper making, atomic energy, aviation, rockets and the like, and daily life of people.
However, the conventional ball valve has the following problems in opening or closing process:
1. when the ball valve is used in a high-pressure pipeline, because the pressure difference before and after the ball valve is closed is very big, especially when export one side is zero pressure, the valve ball of the ball valve can tightly press on the driving piece under the action of medium pressure difference, resulting in that the ball valve needs very big drive moment to open, consequently need be equipped with powerful ball valve opening device, so not only can greatly increased equipment purchase expense, still can lead to the weight and the volume increase of whole ball valve, lead to the inconvenience of installation use.
2. If the speed of opening and close to the ball valve is too fast, then form the water hammer easily, cause the impact damage to the inside structure of ball valve, make sealing member or disk seat appear not hard up even and influence the leakproofness and the life of whole ball valve.
Disclosure of Invention
In order to solve the problems existing when the existing ball valve with the structure is used for a high-pressure pipeline, the invention provides a ball valve with a brand-new structure. The ball valve comprises a valve body and a valve ball; the valve body is provided with an inlet, an outlet, an inlet flow passage, an outlet flow passage and a control groove, and the valve ball is positioned in the valve body and is provided with a control plate and a through hole; the control plate extends into the control groove, the control groove is divided into a first control groove and a second control groove, and the control plate can reciprocate along the control groove to drive the valve ball to rotate relative to the valve body and control the communication relation between the through hole and the inlet and the outlet; one end of the inlet flow passage is communicated with the inlet, the other end of the inlet flow passage is selectively communicated with the first control groove and the second control groove, one end of the outlet flow passage is communicated with the outlet, and the other end of the outlet flow passage is selectively communicated with the second control groove and the first control groove; when the inlet channel is communicated with the first control groove, the second control groove is communicated with the outlet channel; when the inlet channel is communicated with the second control groove, the first control groove is communicated with the outlet channel.
Preferably, the ball valve is also provided with an adjusting valve core, an adjusting elastic piece and an adjusting damper, and the valve body is provided with an adjusting groove; the adjusting valve core is positioned in the adjusting groove and divides the adjusting groove into a first adjusting groove, a second adjusting groove and a third adjusting groove; wherein the first regulating groove is selectively communicated with the inlet flow passage, the first regulating groove is communicated with the second regulating groove, the first regulating groove is communicated with the third regulating groove, the regulating damper is positioned between the first regulating groove and the third regulating groove, the third regulating groove is selectively communicated with the first control groove and the second control groove, and the regulating elastic element is positioned in the third regulating groove to drive the regulating valve core to move towards the second regulating groove so as to keep the maximum flow area between the first regulating groove and the inlet flow passage;
when the acting force of the medium in the second adjusting groove on the control valve core is larger than the common acting force of the medium in the adjusting elastic part and the third adjusting groove on the control valve core, the control valve core moves towards the third adjusting groove, and the flow area between the first adjusting groove and the inlet flow channel is reduced;
when the acting force of the medium in the second adjusting groove on the control valve core is smaller than the common acting force of the medium in the adjusting elastic part and the third adjusting groove on the control valve core, the control valve core moves towards the second adjusting groove, and the flow area between the first adjusting groove and the inlet flow channel is increased.
Further preferably, the adjusting elastic member is a coil spring.
Further preferably, the adjusting damper is a damping screw and is located between the first adjusting groove and the third adjusting groove.
Further preferably, the ball valve is also provided with a valve shaft; the valve shaft is movably connected with the valve body, one end of the valve shaft is a control end and is positioned in the valve body, and the other end of the valve shaft is a driving end and is positioned outside the valve body; a first flow passage and a second flow passage are arranged at the control end of the valve shaft, one end of the first flow passage is communicated with the third adjusting groove, the other end of the first flow passage is selectively communicated with the first control groove and the second control groove, one end of the second flow passage is communicated with the outlet flow passage, and the other end of the second flow passage is selectively communicated with the first control groove and the second control groove; when the first flow passage communicates the third regulation groove with the first control groove, the second flow passage communicates the second control groove with the outlet flow passage; when the first flow passage communicates the third regulation groove with the second control groove, the second flow passage communicates the first control groove with the outlet flow passage.
Further preferably, the valve shaft is rotatably connected to the valve body.
Further preferably, the ball valve is further provided with a handle, and the handle is fixedly connected with the control end of the valve shaft so as to drive the valve shaft to rotate in a reciprocating manner relative to the valve body.
Further preferably, a passage communicating between the first adjustment groove and the third adjustment groove is located on the valve shaft, and the adjustment damper is coupled to the valve shaft.
Preferably, the ball valve is further provided with a valve seat, the valve seat is located between the valve body and the valve ball, the valve seat is detachably connected with the valve body, and the valve seat is movably and hermetically connected with the valve ball through a sealing piece.
Further preferably, the valve seat is in threaded connection with the valve body.
Compared with the ball valve with the existing structure, the ball valve has the following beneficial technical effects:
1. according to the invention, the inlet flow passage, the outlet flow passage and the control groove are arranged on the valve body, the control plate is arranged on the valve ball and extends into the control groove, the inlet medium and the outlet medium are respectively guided to two sides of the control plate by the inlet flow passage and the outlet flow passage, an acting force reciprocating along the control groove is formed on the control plate, and the valve ball is driven to rotate relative to the valve body in the reciprocating movement process of the control plate along the control groove. At this moment, just can realize by the poor drive valve ball of medium between import and the export rotating to saved the use to high-power ball valve opening device, so not only can the manufacturing cost of the whole ball valve of greatly reduced, but also can reduce the weight and the volume of whole ball valve, improved the nimble convenience of this ball valve installation and use.
2. In the invention, the adjusting valve core, the adjusting damper, the adjusting elastic part and the adjusting groove are arranged between the inlet flow channel and the control groove, and the medium flow which flows into the control groove and drives the control board to reciprocate along the control groove is automatically adjusted according to the pressure change of the medium at the inlet, namely, when the pressure of the inlet medium is overhigh, the medium flow which flows into the control groove is reduced, so that the rotating speed of the control board driving the valve ball is reduced, the water hammer phenomenon is avoided, otherwise, when the pressure of the inlet medium is not high, the medium at the inlet flows into the control groove at the maximum flow, so that the control board quickly drives the valve ball to rotate, and the opening and closing response speed of the ball valve is improved.
3. In the invention, the valve shaft connected with the handle is arranged, the first flow passage and the second flow passage are arranged on the valve shaft, and the rotation of the valve shaft is controlled by manually operating the handle, so that the communication relations between the first flow passage and the second flow passage and the inlet flow passage, between the outlet flow passage and the control groove are controlled, the flow directions of the inlet medium and the outlet medium are changed, and the change of the rotation direction of the valve ball is achieved. Like this, not only can make the valve shaft reach the effect of pilot control to can reach the control to valve ball pivoted with less drive power, obtain and carry out the effect of nimble open and close control to this ball valve, moreover under this condition, no matter how to the slew velocity of handle, all do not influence the slew velocity of valve ball, thereby avoided because operating personnel is too fast to the handle rotational speed and the water hammer phenomenon that probably produces, eliminated the manual operation error, further improved this ball valve and opened and close the reliable and stable nature of work.
Drawings
FIG. 1 is a schematic structural diagram of the ball valve of the present embodiment in an open state;
FIG. 2 is a schematic structural view of a cross section taken along the direction M-M in FIG. 1;
FIG. 3 is a schematic structural view of a cross section in the direction N-N in FIG. 1;
FIG. 4 is a schematic structural diagram of the ball valve of the present embodiment in a closed state;
FIG. 5 is a schematic structural view of a cross section taken along the direction M-M in FIG. 4;
fig. 6 is a schematic structural view of the cross section in the direction of N-N in fig. 4.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 6, the ball valve in the present embodiment includes a valve body 1, a valve ball 2, a valve seat 3, and a valve shaft 4.
An inlet 11, an outlet 12, an inlet channel 13, an outlet channel 14 and a control groove 15 are provided on the valve body 1, wherein a valve seat 3 is provided at the inlet 11 and the outlet 12, respectively, and the valve ball 2 is located inside the valve body 1 and is simultaneously in movable sealing connection with the two valve seats 3 via a sealing element.
A through hole 21 and a control plate 22 are provided on the valve ball 2. The through hole 21 penetrates through the valve ball 2 along the radial direction and is used for communicating and cutting off the inlet 11 and the outlet 12, one end of the control plate 22 is fixedly connected with the valve ball 2, the other end of the control plate extends into the control groove 15, the control groove 15 is divided into a first control groove 151 and a second control groove 152, the control plate 22 can move back and forth along the direction from the control groove 15 to the first control groove 151 and the direction from the control groove 152, the valve ball 2 is driven to rotate back and forth relative to the valve body 1, and then the communication relation between the through hole 21 and the inlet 11 and the outlet 12 is controlled.
The valve shaft 4 is rotatably connected to the valve body 1. Wherein one end of the valve shaft 4 is located inside the valve body 1 as a control end, and a first flow passage 41 and a second flow passage 42 are provided at the end; the other end of the valve shaft 4 is located outside the valve body 1 as a driving end and connected with a driving device so as to drive the whole valve shaft 4 to rotate in a reciprocating manner relative to the valve body 1. One end of the first flow path 41 is in communication with the inlet flow path 13, the inlet flow path 13 is in communication with the inlet 11, and the other end of the first flow path 41 is in selective communication with the first control groove 151 and the second control groove 152. One end of the second flow passage 42 is in communication with the outlet flow passage 14, the outlet flow passage 14 is in communication with the outlet 12, and the other end of the second flow passage 42 is in selective communication with the first control operation 151 and the second control groove 152.
When the valve shaft rotates to the first flow channel relative to the valve body to communicate the inlet flow channel with the first control groove, the second flow channel is communicated with the second control groove and the outlet flow channel, so that the inlet is communicated with the first control groove, the second control groove is communicated with the outlet, and the control plate can move towards the second control groove under the action of pressure difference between inlet media in the first control groove and outlet media in the second control groove, so that the valve ball is driven to rotate relative to the valve body, the inlet and the outlet are communicated through the through hole, and the ball valve is opened.
When the valve shaft rotates to the first flow channel relative to the valve body to communicate the inlet flow channel with the second control groove, the second flow channel is communicated with the first control groove and the outlet flow channel, so that the outlet is communicated with the first control groove, the second control groove is communicated with the inlet, and the control plate can move towards the first control groove under the action of pressure difference between outlet media in the first control groove and inlet media in the second control groove, so that the valve ball is driven to rotate relative to the valve body, the inlet and the outlet are disconnected and communicated through the through hole, and the ball valve is closed.
In this embodiment, through regard as the guide control spare with the valve shaft, carry out reciprocating rotation for the valve body through the drive valve shaft promptly to control the intercommunication relation between import and export and first control groove and the second control groove, and then by the pressure differential drive valve ball between import medium and the export medium rotate, just so can avoid completely because between import and the export because medium pressure differential is great probably need high-power drive equipment to carry out the rotation drive of big moment of torsion to the valve ball, thereby reduce the cost and the structure size of whole ball valve, improve the nimble convenience to this ball valve use.
Meanwhile, a handle 5 is provided in the ball valve of the present embodiment. The handle 5 is fixedly connected to the drive end of the valve shaft 4 located outside the valve body 1, so that a reciprocating rotational drive of the valve shaft 4 relative to the valve body 1 is achieved by rotation of the operating handle 5. Therefore, the opening and closing control of the whole ball valve can be achieved only by operating the handle with low torque. Similarly, in other embodiments, the handle may be replaced by a low-torque electric driving device, such as a stepper motor, which is coaxially connected with the valve shaft, so as to realize remote driving control of the valve shaft, and meet the requirements of the ball valve in special working conditions.
In addition, in the present embodiment, the valve shaft 4 and the valve body 1 are connected in a relative rotation manner, and the first flow passage 41 and the second flow passage 42 are directly opened on the valve shaft 4, and each of the first flow passage 41 and the second flow passage 42 includes three flow passage openings, one flow passage opening of the first flow passage 41 is used for keeping communication with the inlet flow passage, the other two flow passage openings are located at different cross-sectional positions and are respectively used for forming communication with the first control groove and the second control groove, similarly, one flow passage opening of the second flow passage 42 is used for keeping communication with the outlet flow passage, and the other two flow passage openings are located at different cross-sectional positions and are respectively used for forming communication with the first control groove and the second control groove, so that the compact structure of the valve shaft is improved. Meanwhile, the valve body 1 is further provided with a first auxiliary flow passage 16 and a second auxiliary flow passage 17, and under the condition that one end of the first auxiliary flow passage 16 and one end of the second auxiliary flow passage 17 are respectively communicated with the first control groove 151 and the second control groove 152, the other ends of the first auxiliary flow passage 16 and the second auxiliary flow passage 17 respectively extend to different positions on a surface of the valve body 1, which rotates relative to the valve shaft 4, so that selective communication can be formed between the first auxiliary flow passage and the second auxiliary flow passage, and the switching control of the communication relation among the inlet flow passage, the outlet flow passage, the first control groove and the second control groove can be realized in the process that the valve shaft rotates relative to the valve body.
At this moment, because the valve shaft only needs to carry out reciprocating rotation for the valve body and can accomplish the opening and closing control of whole ball valve to can reduce the whole ball valve greatly and to the occupation in space in the course of the work, in order to reach higher use flexibility.
Similarly, in other embodiments, the valve shaft and the valve body may be connected in a sliding manner along a linear direction, and the switching of the communication relationship between the inlet and the outlet and the first control groove and the second control groove may be satisfied by adjusting the opening form and the relative position relationship of the first flow passage, the second flow passage, the first auxiliary flow passage and the second auxiliary flow passage, and in this case, the handle may be replaced by an electric pole or a linear motor, so as to achieve driving control of the valve shaft to perform a relative reciprocating linear movement with respect to the valve body.
Referring to fig. 1 and 2, in the ball valve of the present embodiment, an adjustment valve body 6, an adjustment elastic member 7, and an adjustment damper 8 are further provided, and an adjustment groove 18 is provided in the valve body 1. Wherein, the adjusting slot 18 is an arc slot and keeps coaxial relation with the valve shaft 4. The regulator spool 6 is also of arcuate configuration and is located within the regulator groove 18, dividing the regulator groove 18 into a first regulator groove 181, a second regulator groove 182 and a third regulator groove 183. The first regulation groove 181 is selectively communicated with the inlet flow passage 13, the first regulation groove 181 is communicated with the second regulation groove 182, the first regulation groove 181 is also communicated with the third regulation groove 183, and the regulation damper 8 is positioned between the first regulation groove 181 and the third regulation groove 183, so that a pressure difference is formed between the second regulation groove 182 and the third regulation groove 183, and the third regulation groove 183 is communicated with the first flow passage 41, and is further selectively communicated with the first control groove 151 and the second control groove 152. The regulation resilient member 7 is a coil spring and is located in the third regulation groove 183 to drive the regulation spool 6 to move in the direction of the second regulation groove 182.
At this time, when the acting force of the medium in the second adjusting groove on the control valve core is greater than the common acting force of the medium in the adjusting elastic part and the third adjusting groove on the control valve core, the control valve core moves towards the third adjusting groove, so that the flow area between the first adjusting groove and the inlet flow channel is reduced, the medium flow flowing into the first adjusting groove from the inlet flow channel is reduced, the medium flow flowing into the first flow channel is further reduced, the moving speed of the control plate in the control groove is reduced, and the valve ball rotates relative to the valve body at a slow speed.
On the contrary, when the acting force of the medium in the second adjusting groove on the control valve core is smaller than the common acting force of the medium in the adjusting elastic part and the medium in the third adjusting groove on the control valve core, namely the medium pressure difference between the inlet and the outlet is not large, the control valve core moves towards the direction of the second adjusting groove, so that the flow area between the first adjusting groove and the inlet flow channel is recovered to the maximum, the medium in the inlet flow channel flows into the first adjusting groove in a maximum flow mode and then flows into the first control groove or the second control groove, the moving speed of the control panel in the control groove is improved, the valve ball can rapidly complete rotation, and the opening and closing response speed of the whole valve ball is improved.
At this time, by arranging the adjusting valve core, the adjusting groove, the adjusting elastic piece and the adjusting damper between the inlet flow channel and the first flow channel, the incoming flow medium of the inlet flow channel is divided into two streams of media with pressure difference by the adjusting damper, and the adjusting valve core is subjected to reciprocating drive control according to the two streams of media with pressure difference, so that the flow area between the inlet flow channel and the first flow channel is controlled. Like this, when the medium pressure in the inlet flow channel is higher, when inlet medium pressure is higher promptly, will form great pressure differential between second adjustment tank and third adjustment tank through adjusting the damping to control the movement of adjusting the case and reduce the through-flow area between inlet flow channel and the first adjustment tank, reduce the medium volume that flows in first runner, reduce the translation rate of control panel in the control groove, reach the control effect to the slow start-stop of ball valve, avoid the emergence of water hammer phenomenon.
In the present embodiment, the most common coil spring is selected for the adjusting elastic member to reduce the manufacturing cost, and similarly, in other embodiments, other elastic members may be replaced to achieve the effect of driving the adjusting valve core toward the second adjusting groove. For example, when the regulating valve core adopts a straight valve core structure form to form a slide valve structure, the regulating elastic part can even directly select an electromagnet and be directly connected with the regulating valve core to achieve the effect of actively controlling the regulating valve core, at the moment, the arrangement of the second regulating groove and the third regulating groove can be omitted, the movement of the regulating valve core is directly controlled according to the pressure of the inlet medium, and then the flow area between the inlet flow channel and the first regulating groove is regulated.
Further, in the present embodiment, the passage for communication between the first adjustment groove and the third adjustment groove is provided on the valve shaft in accordance with the positional relationship between the adjustment groove and the valve shaft, and the adjustment damper is detachably attached to the valve shaft, for example, a damper screw that is screwed for adjustment damper. Like this, according to the requirement of different operating modes, just can carry out quick assembly disassembly to the damping screw and change to reach the damping effect adjustment to adjusting damping, improve the availability factor of this ball valve.
In addition, as shown in fig. 1, in the present embodiment, the valve seat 3 is connected to the valve body 1 by a screw thread, so that the valve seat 3 can be quickly disassembled. Like this, not only can be according to the difference of valve ball, the disk seat that the quick replacement corresponds to satisfy and use with the cooperation of different valve balls, but also can change the sealing member that is used for sealed valve ball at any time, in order to guarantee to improve the stability in use of whole ball valve to the sealed effect of valve ball.
In addition, in this embodiment, through being split type structure with the valve body design, there are a plurality of subassemblies to assemble the constitution through bolted connection's mode, so not only the equipment operation of the whole ball valve of being convenient for, but also be convenient for to the manufacturing of valve body, guarantee the machining precision, improve the control precision of whole ball valve. In this case, the inlet channel and the outlet channel provided in the valve body in this embodiment are formed by connecting a plurality of channels in sequence. However, in other embodiments, the inlet channel and the outlet channel may be designed as complete channels or even as external pipes according to different processing levels and different use requirements, and the accurate drainage of the inlet medium and the outlet medium is also realized.
Referring to fig. 1 to 6, when the ball valve of the present embodiment works, the inlet 11 is communicated with the upstream pipeline in the control line, and the outlet 12 is communicated with the downstream pipeline in the control line, and the specific working process is as follows:
when the ball valve needs to be opened, the handle 5 is rotated first, the valve shaft 4 is rotated to the position shown in fig. 1 by the handle 5, that is, the first flow passage 41 is rotated to the position where it is communicated with the first auxiliary flow passage 16, the second flow passage 42 is rotated to the position where it is communicated with the second auxiliary flow passage 17, and the regulating valve core 6 is kept at the end position of the second regulating groove 182 by the regulating elastic member 7, so that the inlet flow passage 13 and the first regulating groove 181 are kept in the communication state of the maximum flow area. At this time, the medium at the inlet 11 flows into the first control groove 151 through the inlet flow passage 13, the first regulation groove 181, the regulation damper 8, the first flow passage 41, and the first auxiliary flow passage 16 in order, and the medium in the second control groove 152 flows to the outlet 12 through the second auxiliary flow passage 17, the second flow passage 42, and the outlet flow passage 14 in order. Thus, the control plate 22 starts to move towards the second control groove 152 under the action of the pressure difference between the first control groove 151 and the second control groove 152, and further drives the valve ball 2 to rotate relative to the valve body 1, so as to rotate the through hole 21 to a position communicated with the inlet 11 and the outlet 12, and thus the opening operation of the ball valve is completed under the action of the pressure difference between the inlet medium and the outlet medium.
When the ball valve needs to be closed, the handle 5 is rotated first, the handle 5 drives the valve shaft 4 to rotate to the position shown in fig. 4, that is, the first flow passage 41 rotates to the position where the first flow passage is communicated with the second auxiliary flow passage 17, the second flow passage 42 rotates to the position where the second flow passage is communicated with the first auxiliary flow passage 16, and meanwhile, the regulating valve core 6 is still kept at the terminal position of the second regulating groove 182 under the action of the regulating elastic member 7, so that the inlet flow passage 13 and the first regulating groove 181 are kept in the communication state of the maximum flow area. At this time, the medium at the inlet 11 flows into the second control groove 152 through the inlet flow passage 13, the first regulation groove 181, the regulation damper 8, the first flow passage 41, and the second auxiliary flow passage 17 in order, and the medium in the first control groove 151 flows to the outlet 12 through the first auxiliary flow passage 16, the second flow passage 42, and the outlet flow passage 14 in order. Thus, the control plate 22 starts to move towards the first control groove 151 under the action of the pressure difference between the first control groove 151 and the second control groove 152, and further drives the valve ball 2 to rotate relative to the valve body 1, so as to rotate the through hole 21 to a position where the through hole is disconnected from the inlet 11 and the outlet 12, and thus the closing operation of the ball valve is completed under the action of the pressure difference between the inlet medium and the outlet medium.
Wherein, during the opening operation or closing operation of the ball valve, if the medium pressure at the inlet 11 is too high, a part of the medium flowing into the first regulating groove 181 through the inlet channel 13 directly flows into the second regulating groove 182 while maintaining the same pressure, and another part of the medium flows into the first channel 41 and the third regulating groove 183 through the regulating damper 8 to form a significant pressure drop, so that a large medium pressure difference is formed between the second regulating groove 182 and the third regulating groove 183, when the pressure difference reaches a value that the regulating valve core 6 can move towards the third regulating groove 183 against the action force of the regulating elastic member 7, the regulating valve core 6 covers the flow cross section between the inlet channel 13 and the first regulating groove 181, thereby reducing the flow area between the inlet channel 13 and the first regulating groove 181 and reducing the medium flow rate flowing into the first regulating groove 181, further, the medium flow flowing into the first control groove 151 or the second control groove 152 is reduced, the moving speed of the control plate 22 in the control groove 15 is reduced, and the valve ball 2 completes opening and closing rotation at a slow speed, so as to avoid the problem of water hammer.
Claims (10)
1. The ball valve is characterized by comprising a valve body and a valve ball; the valve body is provided with an inlet, an outlet, an inlet flow passage, an outlet flow passage and a control groove, and the valve ball is positioned in the valve body and is provided with a control plate and a through hole; the control plate extends into the control groove, the control groove is divided into a first control groove and a second control groove, and the control plate can reciprocate along the control groove to drive the valve ball to rotate relative to the valve body and control the communication relation between the through hole and the inlet and the outlet; one end of the inlet flow passage is communicated with the inlet, the other end of the inlet flow passage is selectively communicated with the first control groove and the second control groove, one end of the outlet flow passage is communicated with the outlet, and the other end of the outlet flow passage is selectively communicated with the second control groove and the first control groove;
when the inlet channel is communicated with the first control groove, the second control groove is communicated with the outlet channel; when the inlet channel is communicated with the second control groove, the first control groove is communicated with the outlet channel.
2. The ball valve according to claim 1, wherein the ball valve is further provided with an adjustment spool, an adjustment elastic member and an adjustment damper, and an adjustment groove is provided on the valve body; the adjusting valve core is positioned in the adjusting groove and divides the adjusting groove into a first adjusting groove, a second adjusting groove and a third adjusting groove; wherein the first regulating groove is selectively communicated with the inlet flow passage, the first regulating groove is communicated with the second regulating groove, the first regulating groove is communicated with the third regulating groove, the regulating damper is positioned between the first regulating groove and the third regulating groove, the third regulating groove is selectively communicated with the first control groove and the second control groove, and the regulating elastic element is positioned in the third regulating groove to drive the regulating valve core to move towards the second regulating groove so as to keep the maximum flow area between the first regulating groove and the inlet flow passage;
when the acting force of the medium in the second adjusting groove on the control valve core is larger than the common acting force of the medium in the adjusting elastic part and the third adjusting groove on the control valve core, the control valve core moves towards the third adjusting groove, and the flow area between the first adjusting groove and the inlet flow channel is reduced;
when the acting force of the medium in the second adjusting groove on the control valve core is smaller than the common acting force of the medium in the adjusting elastic part and the third adjusting groove on the control valve core, the control valve core moves towards the second adjusting groove, and the flow area between the first adjusting groove and the inlet flow channel is increased.
3. The ball valve according to claim 2, wherein the adjusting elastic member employs a coil spring.
4. The ball valve of claim 2, wherein the adjustment damping is a damping screw and is located between the first adjustment groove and the third adjustment groove.
5. A ball valve according to claim 2, wherein the ball valve is further provided with a valve shaft; the valve shaft is movably connected with the valve body, one end of the valve shaft is a control end and is positioned in the valve body, and the other end of the valve shaft is a driving end and is positioned outside the valve body; a first flow passage and a second flow passage are arranged at the control end of the valve shaft, one end of the first flow passage is communicated with the third adjusting groove, the other end of the first flow passage is selectively communicated with the first control groove and the second control groove, one end of the second flow passage is communicated with the outlet flow passage, and the other end of the second flow passage is selectively communicated with the first control groove and the second control groove;
when the first flow passage communicates the third regulation groove with the first control groove, the second flow passage communicates the second control groove with the outlet flow passage; when the first flow passage communicates the third regulation groove with the second control groove, the second flow passage communicates the first control groove with the outlet flow passage.
6. The ball valve of claim 5, wherein the valve shaft is rotationally coupled to the valve body.
7. The ball valve of claim 6, further comprising a handle fixedly attached to the control end of the valve shaft for driving the valve shaft to rotate reciprocally relative to the valve body.
8. The ball valve of claim 5, wherein a passage communicating between the first and third adjustment grooves is located on the valve shaft, and the adjustment damper is coupled to the valve shaft.
9. The ball valve according to any of claims 1-8, further comprising a valve seat, wherein the valve seat is located between the valve body and the valve ball, and the valve seat is detachably connected with the valve body, and the valve seat and the valve ball form a movable sealing connection through a sealing member.
10. The ball valve of claim 9, wherein the valve seat is threadably connected to the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110221280.9A CN113028091B (en) | 2021-02-27 | 2021-02-27 | Ball valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110221280.9A CN113028091B (en) | 2021-02-27 | 2021-02-27 | Ball valve |
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| Publication Number | Publication Date |
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| CN113028091A true CN113028091A (en) | 2021-06-25 |
| CN113028091B CN113028091B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110221280.9A Active CN113028091B (en) | 2021-02-27 | 2021-02-27 | Ball valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542748A (en) * | 2022-02-22 | 2022-05-27 | 浙江旭腾阀门有限公司 | Soft and hard sealing ball valve |
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| KR101902275B1 (en) * | 2017-05-24 | 2018-09-28 | 지종필 | Ball valve that can be installed by selecting automatic door or manual door |
| CN111520500A (en) * | 2020-04-30 | 2020-08-11 | 邵玉刚 | Ball valve |
| CN111536254A (en) * | 2020-04-30 | 2020-08-14 | 韩国昊 | Low-torque high-pressure ball valve |
| CN111649155A (en) * | 2020-06-16 | 2020-09-11 | 孙龙 | Ceramic valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550900A (en) * | 2009-05-12 | 2009-10-07 | 福建万新发电设备有限公司 | Valve control device and control method thereof |
| CN102537402A (en) * | 2011-12-23 | 2012-07-04 | 中国航天科技集团公司第六研究院第十一研究所 | Low flow resistance and high pressure pneumatic damping ball valve with self-locking function |
| CN102878317A (en) * | 2012-10-23 | 2013-01-16 | 浙江超达阀门股份有限公司 | Pneumatic ball valve reliable in sealing and low in opening-closing torque |
| KR101902275B1 (en) * | 2017-05-24 | 2018-09-28 | 지종필 | Ball valve that can be installed by selecting automatic door or manual door |
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| CN111536254A (en) * | 2020-04-30 | 2020-08-14 | 韩国昊 | Low-torque high-pressure ball valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114542748A (en) * | 2022-02-22 | 2022-05-27 | 浙江旭腾阀门有限公司 | Soft and hard sealing ball valve |
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| CN113028091B (en) | 2023-06-23 |
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