CN110230704B - Damping butterfly valve - Google Patents
Damping butterfly valve Download PDFInfo
- Publication number
- CN110230704B CN110230704B CN201910538720.6A CN201910538720A CN110230704B CN 110230704 B CN110230704 B CN 110230704B CN 201910538720 A CN201910538720 A CN 201910538720A CN 110230704 B CN110230704 B CN 110230704B
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- China
- Prior art keywords
- butterfly valve
- heat supply
- valve body
- hole
- supply butterfly
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- 238000013016 damping Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910002804 graphite Inorganic materials 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 21
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/222—Shaping of the valve member
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/224—Details of bearings for the axis of rotation
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
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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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly 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
- F16K47/00—Means in valves for absorbing fluid energy
-
- 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
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a damping butterfly valve, in particular to the field of butterfly valves, which comprises a heat supply butterfly valve body, wherein a heat supply butterfly valve rod is arranged in the heat supply butterfly valve body, a heat supply butterfly valve plate is arranged on the heat supply butterfly valve rod, and a damping flow-through mechanism is arranged on the heat supply butterfly valve plate; the damping through-flow mechanism comprises a plurality of through-flow holes, one ends of the through-flow holes are communicated with horn holes, the opening angle of each horn hole is set to 90 degrees, a plurality of communication grooves are formed in the valve plate of the heat supply butterfly valve, and valve rod fixing grooves are formed in the valve plate of the heat supply butterfly valve. According to the invention, the damping through-flow mechanism is arranged, the opening of the valve body of the heat supply butterfly valve is smaller, steam passes through the through-flow hole, the horn hole, the communication groove and the auxiliary through-flow hole on the valve plate of the heat supply butterfly valve, so that the minimum flow is ensured, the generated vortex is reduced, the sealing ring with the through hole can play a good role in absorbing vibration, the damping effect is better as a whole, and the safety of a heat supply pipeline and the unit efficiency can be effectively ensured.
Description
Technical Field
The invention relates to the technical field of butterfly valves, in particular to a damping butterfly valve.
Background
The butterfly valve is also called as a flap valve, and is a valve which has a simple structure and can be used for opening and closing low-pressure pipeline media.
The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe is mainly used for cutting and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly valve opening and closing piece in the valve body, so that the purpose of opening and closing or adjusting is achieved.
The butterfly valve is a valve which is turned back and forth by about 90 degrees by a disc type opening and closing member to open, close or regulate the flow of medium. The butterfly valve has the advantages of simple structure, small volume, light weight, material consumption saving, small installation size, small driving moment, simple and rapid operation, and can simultaneously have good flow regulating function and closing sealing property, thereby being one of the fastest-developing valve varieties in more than ten years. Butterfly valves are very widely used. The variety and number of the used valve are still expanding, and the valve is developed towards high temperature, high pressure, large caliber, high tightness, long service life, excellent regulation property and multifunction, and the reliability and other performance indexes of the valve reach higher level.
The heat supply butterfly valve is used for a medium-low pressure cylinder communication pipe of a turbine of a cogeneration unit of a power plant, the minimum flow of the heat supply butterfly valve is ensured by a gap between a butterfly plate and a valve body, so that under the low-load heat supply working condition of the power plant, the valve is in a small opening degree, steam in a pipeline generates vortex at the moment, and the whole pipeline generates serious vibration, so that the safety of the heat supply pipeline and the efficiency of the unit are affected.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a damping butterfly valve, through steam passing through a through hole, a horn hole, a communication groove and an auxiliary through hole on a valve plate of a heating butterfly valve in a valve body of the heating butterfly valve, the opening angle of the horn hole is 90 degrees, smooth passing of the steam can be ensured, adverse effects on the passing rate of the steam can not be caused, the minimum flow rate of the steam is ensured by the through hole, the horn hole, the communication groove and the auxiliary through hole, when vibration is generated by a low-pressure communication pipe, the low-pressure communication pipe transmits the vibration to a short pipe, the short pipe transmits the vibration to a second connecting flange, a sealing ring between the second connecting flange and the valve body of the heating butterfly valve is made of rubber, a through hole is arranged in a main body of the sealing ring, and the through hole and the sealing ring made of graphite and stainless steel strip materials can enable the sealing ring to play a role in good shock absorption.
In order to achieve the above purpose, the present invention provides the following technical solutions: the damping butterfly valve comprises a heating butterfly valve body, wherein a heating butterfly valve rod is arranged in the heating butterfly valve body, a heating butterfly valve plate is arranged on the heating butterfly valve rod, and a damping through-flow mechanism is arranged on the heating butterfly valve plate;
the damping through-flow mechanism comprises a plurality of through-flow holes, one ends of the through-flow holes are communicated with each other to form horn holes, the opening angle of each horn hole is set to be 90 degrees, a plurality of communication grooves are formed in the valve plate of the heat supply butterfly valve, a valve rod fixing groove is formed in the valve plate of the heat supply butterfly valve, a valve rod fixing plate is fixedly arranged on the inner wall of the valve rod fixing groove, and a plurality of auxiliary through-flow holes are formed in the side surface of the valve plate of the heat supply butterfly valve;
a diversion mechanism is arranged on one side of the valve body of the heat supply butterfly valve;
The bypass mechanism comprises a bypass pipe and an electric bypass valve, the electric bypass valve comprises an electric valve body and an electric valve rod, and a first connecting flange is arranged between the electric bypass valve and the bypass pipe;
The utility model discloses a heat supply butterfly valve, including heat supply butterfly valve body, heat supply butterfly valve body both ends all are equipped with the nozzle stub, the nozzle stub both ends all are equipped with second flange, be equipped with the sealing washer standing groove between second flange and the heat supply butterfly valve body, the inside sealing washer that is equipped with of sealing washer standing groove, the sealing washer includes the main part, the inside vertical through-hole that is equipped with of main part, the inside dead lever that is equipped with of through-hole, the dead lever both ends all are equipped with sealed pad, the sealing washer is made by graphite and stainless steel strip material.
In a preferred embodiment, one end of the bypass pipe is communicated with the input end of the heating butterfly valve body, and the other end of the bypass pipe is communicated with the output end of the heating butterfly valve body.
In a preferred embodiment, the electrically operated bypass valve is fastened to the bypass line via a first connecting flange.
In a preferred embodiment, the valve stem fixing plate is made of a rubber material.
In a preferred embodiment, the auxiliary through-flow hole is provided in a sector-shaped cross-section.
In a preferred embodiment, the sealing ring placement groove is matched with a sealing ring.
In a preferred embodiment, the second connecting flange is provided with a fixing bolt, and a fixing screw hole is formed inside the second connecting flange.
In a preferred embodiment, the fixing bolt is matched with the fixing screw hole.
The invention has the technical effects and advantages that:
When the opening degree of the valve body of the heat supply butterfly valve is smaller, steam passes through the through holes, the horn holes, the communication grooves and the auxiliary through holes on the valve plate of the heat supply butterfly valve in the valve body of the heat supply butterfly valve, the opening angle of the horn holes is 90 degrees, smooth passing of the steam can be ensured, adverse effects on the passing rate of the steam can not be caused, the through holes, the horn holes, the communication grooves and the auxiliary through holes ensure minimum flow of the steam, and when the low-pressure communication pipe vibrates, the low-pressure communication pipe transmits vibration to the short pipe, the short pipe transmits the vibration to the second connecting flange, the sealing ring between the second connecting flange and the valve body of the heat supply butterfly valve is made of graphite and stainless steel strips, through holes are formed in the main body of the sealing ring, the through holes and the sealing ring made of graphite and stainless steel strips can enable the sealing ring to have good vibration absorbing effect, a fixing rod is arranged in the through holes, the sealing effect of the sealing rings is ensured, the opening degree of the through holes is smaller, the through holes on the valve body of the heat supply butterfly valve is ensured, the vibration absorbing effect of the low-pressure communication pipe is ensured, the vibration absorbing effect of the whole butterfly valve plate is guaranteed, the vibration absorbing effect of the heat supply butterfly valve is better, and the vibration absorbing effect of the heat supply butterfly valve is guaranteed, and the vibration absorbing effect is achieved, and the vibration absorbing effect is better and the whole and vibration absorbing effect is guaranteed;
The unit is in heat supply state operation, when effectively adjusting the steam extraction volume through the regulation of heat supply butterfly valve body aperture within range, and under the acceptable condition of low pressure communication pipe amplitude range, the electronic bypass valve on the bypass pipe keeps in full-open operating condition, can share the effect to the heat supply butterfly valve body, effectively reduces the amplitude and prolongs the life of heat supply butterfly valve body and increase work efficiency.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is an enlarged view of the structure of fig. 1a according to the present invention.
Fig. 3 is an enlarged view of the structure of fig. 1B according to the present invention.
Fig. 4 is a top view of a valve plate of a heating butterfly valve of the invention.
Fig. 5 is a cross-sectional side view of the through-flow aperture of the present invention.
Fig. 6 is a cross-sectional side view of a seal ring of the present invention.
Fig. 7 is a perspective view of a seal ring according to the present invention.
The reference numerals are: the valve comprises a valve body of a heat supply butterfly valve, a valve rod of the 2 heat supply butterfly valve, a valve plate of the 3 heat supply butterfly valve, a damping through-flow mechanism 4, a through-flow hole 5, a horn hole 6, a communicating groove 7, a valve rod fixing groove 8, a valve rod fixing plate 9, an auxiliary through-flow hole 10, a flow dividing mechanism 11, a bypass pipe 12, an electric bypass valve 13, an electric valve body 14, an electric valve rod 15, a first connecting flange 16, a short pipe 17, a second connecting flange 18, a sealing ring placing groove 19, a sealing ring 20, a main body 21, a through hole 22, a fixing rod 23, a sealing pad 24, a fixing bolt 25 and a fixing screw hole 26.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the damping butterfly valve shown in fig. 1-7, the damping butterfly valve comprises a heating butterfly valve body 1, a heating butterfly valve rod 2 is arranged in the heating butterfly valve body 1, a heating butterfly valve plate 3 is arranged on the heating butterfly valve rod 2, and a damping through-flow mechanism 4 is arranged on the heating butterfly valve plate 3;
The damping through-flow mechanism 4 comprises a plurality of through-flow holes 5, one end of each through-flow hole 5 is communicated with a horn hole 6, the opening angle of each horn hole 6 is set to 90 degrees, a plurality of communication grooves 7 are formed in the valve plate 3 of the heat supply butterfly valve, a valve rod fixing groove 8 is formed in the valve plate 3 of the heat supply butterfly valve, a valve rod fixing plate 9 is fixedly arranged on the inner wall of each valve rod fixing groove 8, and a plurality of auxiliary through-flow holes 10 are formed in the side surface of the valve plate 3 of the heat supply butterfly valve;
A diversion mechanism 11 is arranged on one side of the valve body 1 of the heating butterfly valve;
The bypass mechanism 11 comprises a bypass pipe 12 and an electric bypass valve 13, the electric bypass valve 13 comprises an electric valve body 14 and an electric valve rod 15, and a first connection flange 16 is arranged between the electric bypass valve 13 and the bypass pipe 12;
The two ends of the heating butterfly valve body 1 are respectively provided with a short pipe 17, the two ends of the short pipe 17 are respectively provided with a second connecting flange 18, a sealing ring placing groove 19 is arranged between the second connecting flange 18 and the heating butterfly valve body 1, a sealing ring 20 is arranged in the sealing ring placing groove 19, the sealing ring 20 comprises a main body 21, a through hole 22 vertically penetrates through the main body 21, a fixed rod 23 is arranged in the through hole 22, sealing gaskets 24 are respectively arranged at the two ends of the fixed rod 23, and the sealing ring 20 is made of graphite and stainless steel strip materials;
one end of the bypass pipe 12 is communicated with the input end of the heat supply butterfly valve body 1, and the other end of the bypass pipe 12 is communicated with the output end of the heat supply butterfly valve body 1;
The electric bypass valve 13 is fixed on the bypass pipe 12 through a first connecting flange 16;
the valve rod fixing plate 9 is made of rubber material;
the cross-sectional shape of the auxiliary through-flow hole 10 is set to be a sector;
The seal ring placing groove 19 is matched with the seal ring 20;
The second connecting flange 18 is provided with a fixing bolt 25, and a fixing screw hole 26 is formed in the second connecting flange 18 in a penetrating manner;
The fixing bolt 25 is matched with the fixing screw hole 26.
The implementation mode specifically comprises the following steps: when the invention is used, the two ends of the heat supply butterfly valve body 1 are connected with the short pipe 17, the two ends of the short pipe 17 are provided with the second connecting flange 18, a sealing ring placing groove 19 is reserved between the second connecting flange 18 and the heat supply butterfly valve body 1, a sealing ring 20 which is matched with the sealing ring placing groove 19 and is made of graphite and stainless steel strips is placed in the sealing ring placing groove 19, a fixing bolt 25 is screwed into a fixing screw hole 26, thereby the short pipe 17 and the heat supply butterfly valve body 1 are fixed together, the electric valve body 14 of the electric bypass valve 13 is fixed on the bypass pipe 12 through the first connecting flange 16, one end of the bypass pipe 12 is communicated with the input end of the heat supply butterfly valve body 1, the other end of the bypass pipe 12 is communicated with the output end of the heat supply butterfly valve body 1, so that the bypass pipe 12 can have a shunting effect on the heat supply butterfly valve body 1, one end of the two short pipes 17 is connected with a low-pressure communication pipe of a unit, the heat supply butterfly valve body 1 can work normally, in normal operation, the heat supply butterfly valve body 1 can effectively regulate ventilation in the opening range of 25% -100%, and a small part of steam passing through the low-pressure communication pipe enters the bypass pipe 12, the bypass pipe 12 can reduce the work load of the heat supply butterfly valve body 1, the service life of the heat supply butterfly valve body 1 is prolonged, and when the opening of the heat supply butterfly valve body 1 is smaller, the steam flows through the through hole 5 on the heat supply butterfly valve plate 3, namely, the heat supply butterfly valve body 1, The horn hole 6, the communication groove 7 and the auxiliary through hole 10 pass through, the opening angle of the horn hole 6 is 90 degrees, the smooth passing of steam can be ensured, adverse effect on the passing rate of steam can not be caused, the minimum flow rate of steam is ensured by the through hole 5, the horn hole 6, the communication groove 7 and the auxiliary through hole 10, when the low-pressure communication pipe vibrates, the low-pressure communication pipe transmits vibration to the short pipe 17, the short pipe 17 transmits the vibration to the second connecting flange 18, the sealing ring 20 between the second connecting flange 18 and the heating butterfly valve body 1 is made of graphite and stainless steel belts, the through hole 22 is arranged in the main body 21 of the sealing ring 20, the sealing ring 20 made of graphite and stainless steel belt materials can enable the sealing ring 20 to play a good role in absorbing vibration, the through hole 22 is internally provided with the fixing rod 23, the two sealing gaskets 24 cover the through hole 22 through the fixing rod 23, so that the sealing effect of the sealing ring 20 is ensured, the unit operates in a heat supply state, when the steam extraction quantity is effectively regulated through regulating the opening range of the heat supply butterfly valve body 1, and under the condition that the amplitude range of the low-pressure communication pipe is acceptable, the electric bypass valve 13 on the bypass pipe 12 is kept in a fully-opened working state, the heat supply butterfly valve body 1 can be shared, the amplitude is effectively reduced, the service life of the heat supply butterfly valve body 1 is prolonged, and the working efficiency is increased; when the steam extraction amount cannot be effectively regulated through the opening range regulation of the valve body 1 of the heat supply butterfly valve, or under the condition that the amplitude range of the low-pressure communication pipe is not acceptable, the valve body 1 of the heat supply butterfly valve is in a zero opening state, the opening of the electric bypass valve on the bypass pipe 12 is reduced and regulated until the requirement of the steam extraction amount is met, the opening of the valve body 1 of the heat supply butterfly valve is smaller through the arrangement of the damping through-flow mechanism 4 and the flow dividing mechanism 11, steam passes through the through-flow hole 5, the horn hole 6, the communication groove 7 and the auxiliary through-flow hole 10 on the valve plate 3 of the heat supply butterfly valve, the generated vortex is reduced while the minimum flow is ensured, and the sealing ring 20 with the through hole 22 can play a good shock absorption role, the damping effect of the invention is better, and the safety of the heat supply pipeline and the efficiency of the unit can be effectively ensured.
The working principle of the invention is as follows:
Referring to fig. 1 to 7 of the specification, when the opening of the heating butterfly valve body 1 is small, steam passes through the through-hole 5, the flare hole 6, the communication groove 7 and the auxiliary through-hole 10 on the heating butterfly valve plate 3 in the heating butterfly valve body 1, the opening angle of the flare hole 6 is 90 degrees, smooth passing of the steam can be ensured, adverse effect on the passing rate of the steam is not caused, the minimum flow rate of the steam is ensured by the through-hole 5, the flare hole 6, the communication groove 7 and the auxiliary through-hole 10, and when vibration is generated by the low-pressure communicating pipe, the low-pressure communicating pipe transmits the vibration to the short pipe 17, the short pipe 17 transmits the vibration to the second connecting flange 18, the sealing ring 20 between the second connecting flange 18 and the heating butterfly valve body 1 is made of graphite and stainless steel strips, the through hole 22 is arranged in the main body 21 of the sealing ring 20, the through hole 22 and the sealing ring 20 made of graphite and stainless steel strip materials can enable the sealing ring 20 to play a good role in absorbing shock, the fixing rod 23 is arranged in the through hole 22, the two sealing gaskets 24 cover the through hole 22 through the fixing rod 23, the sealing effect of the sealing ring 20 is guaranteed, the opening of the heat supply butterfly valve body 1 is smaller through the arrangement of the shock absorption through-flow mechanism 4 and the flow distribution mechanism 11, steam passes through the through-flow hole 5, the horn hole 6, the communication groove 7 and the auxiliary through-flow hole 10 on the heat supply butterfly valve plate 3, the generated vortex is reduced while the minimum flow is guaranteed, and the sealing ring 20 with the through hole 22 can play a good role in absorbing shock, so that the shock absorption effect is better, and the safety and the unit efficiency of a heat supply pipeline can be effectively guaranteed;
Referring to the attached figure 1 of the specification, the unit operates in a heating state, when the steam extraction amount is effectively regulated by regulating the opening range of the heating butterfly valve body 1, and under the condition that the amplitude range of the low-pressure communication pipe is acceptable, the electric bypass valve 13 on the bypass pipe 12 is kept in a fully-opened working state, so that the heat supply butterfly valve body 1 can be shared, the amplitude is effectively reduced, the service life of the heat supply butterfly valve body 1 is prolonged, and the working efficiency is increased.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
Secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The utility model provides a shock attenuation butterfly valve, includes heat supply butterfly valve body (1), its characterized in that: a heat supply butterfly valve rod (2) is arranged in the heat supply butterfly valve body (1), a heat supply butterfly valve plate (3) is arranged on the heat supply butterfly valve rod (2), and a damping flow-through mechanism (4) is arranged on the heat supply butterfly valve plate (3);
The damping through-flow mechanism (4) comprises a plurality of through-flow holes (5), one end of each through-flow hole (5) is communicated with a horn hole (6), the opening angle of each horn hole (6) is set to 90 degrees, a plurality of communication grooves (7) are formed in the heat supply butterfly valve plate (3), a valve rod fixing groove (8) is formed in the heat supply butterfly valve plate (3), a valve rod fixing plate (9) is fixedly arranged on the inner wall of each valve rod fixing groove (8), and a plurality of auxiliary through-flow holes (10) are formed in the side surface of the heat supply butterfly valve plate (3);
A diversion mechanism (11) is arranged on one side of the heating butterfly valve body (1);
The bypass mechanism (11) comprises a bypass pipe (12) and an electric bypass valve (13), the electric bypass valve (13) comprises an electric valve body (14) and an electric valve rod (15), and a first connecting flange (16) is arranged between the electric bypass valve (13) and the bypass pipe (12);
The utility model discloses a butterfly valve body, including heat supply butterfly valve body (1), heat supply butterfly valve body (1) and sealing washer, heat supply butterfly valve body (1) both ends all are equipped with nozzle stub (17), nozzle stub (17) both ends all are equipped with second flange (18), be equipped with sealing washer standing groove (19) between second flange (18) and heat supply butterfly valve body (1), sealing washer standing groove (19) inside is equipped with sealing washer (20), sealing washer (20) include main part (21), inside vertical the running through of main part (21) is equipped with through-hole (22), inside dead lever (23) that are equipped with of through-hole (22), dead lever (23) both ends all are equipped with sealed pad (24), sealing washer (20) are made by graphite and stainless steel strip material.
2. A damper butterfly valve according to claim 1, wherein: one end of the bypass pipe (12) is communicated with the input end of the heat supply butterfly valve body (1), and the other end of the bypass pipe (12) is communicated with the output end of the heat supply butterfly valve body (1).
3. A damper butterfly valve according to claim 1, wherein: the electric bypass valve (13) is fixed on the bypass pipe (12) through a first connecting flange (16).
4. A damper butterfly valve according to claim 1, wherein: the valve rod fixing plate (9) is made of rubber materials.
5. A damper butterfly valve according to claim 1, wherein: the cross-sectional shape of the auxiliary through-flow hole (10) is set to be a sector.
6. A damper butterfly valve according to claim 1, wherein: the sealing ring placing groove (19) is matched with the sealing ring (20).
7. A damper butterfly valve according to claim 1, wherein: the second connecting flange (18) is provided with a fixing bolt (25), and a fixing screw hole (26) is formed in the second connecting flange (18) in a penetrating mode.
8. The damper butterfly valve of claim 7, wherein: the fixing bolt (25) is matched with the fixing screw hole (26).
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| CN201910538720.6A CN110230704B (en) | 2019-06-20 | 2019-06-20 | Damping butterfly valve |
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| CN201910538720.6A CN110230704B (en) | 2019-06-20 | 2019-06-20 | Damping butterfly valve |
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| CN110230704A CN110230704A (en) | 2019-09-13 |
| CN110230704B true CN110230704B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255901A (en) * | 2020-01-15 | 2020-06-09 | 王中雨 | High-efficiency electromechanical valve |
| CN114396480A (en) * | 2022-02-08 | 2022-04-26 | 国工控股集团有限公司 | Ultra-low torque butterfly valve |
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| CN110230704A (en) | 2019-09-13 |
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