CN114517866B - Pipeline is with multistage resistance to compression absorbing waterproof hammer device - Google Patents
Pipeline is with multistage resistance to compression absorbing waterproof hammer device Download PDFInfo
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- CN114517866B CN114517866B CN202210418652.1A CN202210418652A CN114517866B CN 114517866 B CN114517866 B CN 114517866B CN 202210418652 A CN202210418652 A CN 202210418652A CN 114517866 B CN114517866 B CN 114517866B
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
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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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
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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
- F16K31/46—Mechanical actuating means for remote operation
- F16K31/465—Mechanical actuating means for remote operation by flexible transmission means, e.g. cable, chain, bowden wire
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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
- F16K31/56—Mechanical actuating means without stable intermediate position, e.g. with snap action
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/055—Valves therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to the technical field of waterproof hammers, in particular to a multistage compression-resistant shock-absorbing waterproof hammer device for a pipeline. The water hammer preventing device is connected in series to the overflow pipe in front of the main valve. The water hammer is sensed to transfer the relative size of the pressure in the pipeline when the water hammer occurs, the cut-off assembly is operated to quickly cut off the backward movement trend of the water body in the pipeline in front of the cut-off point, more water bodies are prevented from being extruded by backward inertia, the pressure in front of the cut-off point is controlled to be at the pressure which can be borne by a lower pipeline wall surface, the inertia pressure generated by the water body with the backward movement trend in the overflow pipe is gradually accumulated before each cut-off assembly, and the water hammer acting force is shared and borne.
Description
Technical Field
The invention relates to the technical field of waterproof hammers, in particular to a multistage compression-resistant damping waterproof hammer device for a pipeline.
Background
The water hammer is an impact action in a fluid pipeline, because the water body in the pipeline has speed in the advancing process, when a valve is suddenly closed or a pump is suddenly stopped, the fluid in the pipeline in front of a cut-off point continues to advance due to inertia and is accumulated in front of the cut-off point, so that the pressure is increased to a higher value, the wall surface of a flow channel at the cut-off point is impacted, impact sound is given out, and the wall surface of the pipeline at the cut-off point is seriously deformed, so the water hammer action is an important problem to be considered in the field of pump valves.
Water hammer can be prevented by optimizing the pipeline overflow control, such as slowly closing valves and slowly reducing the work power of the pump to stop.
However, in many cases, the water hammer is generated when abnormal conditions occur, the valve is closed due to power loss, the pump unit is locked and stopped, and the like, and under the conditions, a certain means is needed for inhibiting the influence of the water hammer.
In the prior art, a pressure stabilizing tank, a pressure relief pipe and the like are arranged in front of a main valve or a pump which can be suddenly cut off, the volume of the pressure stabilizing tank is limited, when an overflow pipe is of a large caliber, the pressure stabilizing tank also needs to be large to fully reduce the water hammer pressure in front of a cut-off point, the size of equipment can be the biggest problem of limiting the effective use of the section, the pressure relief pipe mode is the deformation of the pressure stabilizing tank, in fact, forward fluid of inertia is drained into a low-pressure tank placed at a far place through a pipeline, the size of the equipment is limited, and if the fluid is directly drained into an open water pool and the like on one side, the fluid is not suitable for being used on a toxic and harmful working medium conveying pipeline.
Disclosure of Invention
The invention aims to provide a multistage compression-resistant damping waterproof hammer device for a pipeline, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a pipeline is with shock-absorbing waterproof hammer device of multistage resistance to compression, waterproof hammer device installs on the overflow pipe to waterproof hammer device is located the place ahead of main valve door, and waterproof hammer device includes pipeline, casing, cuts the subassembly, and the pipeline both ends are connected with the overflow pipe, set up the casing on the pipeline lateral wall, set up in the casing and cut the subassembly, cut the subassembly and produce the pipeline behind the malleation difference at the pipeline end with the front end.
The main valve is used as an example for explaining, during normal overflowing, except for the pressure rise of the booster pump, fluid advances in the overflowing pipe and is continuously reduced in pressure, the overflowing pressure curve is slowly reduced, when the main valve is suddenly closed, a water hammer action is generated on the overflowing pipe, the pressure can rise to be high in a short time before a closing point, a cut-off component is added, on a pipeline in front of the main valve, when the water hammer happens, the relative relation of the gradually reduced pressure along a flow path is turned, a point close to the back of the cut-off is a point with higher pressure, but the incoming flow direction of the flow path is a point with lower pressure, according to the turning change of the relative magnitude of the pressure difference, the cut-off component is controlled to cut off the pipeline, so that more fluid is not collided to the cut off point, but the pressure does not rise any more in a flow passage section between the cut-off component, the cut-off component and the main valve serving as a cut-off point, so that the pressure rise caused by water hammer at the position in front of the main valve is not increased too much, the limit pressure of an adjusting curve is obviously lower than the limit pressure of the water hammer without any protective measures although being higher than the common pressure during overflowing, and the overflow pipe can bear the pressure under the adjusting curve without deformation.
The cut-off component comprises a flashboard, a force storage spring, a traction rope, the water hammer preventing device also comprises a tightening component,
flashboard slidable mounting is in the casing, flashboard slip direction perpendicular to pipeline central line, the flashboard passes pipeline pipe wall position department and sets up sealedly, hold power spring one end and support the flashboard and keep away from the one end of pipeline, hold the power spring other end and support shells inner wall, haulage rope one end is connected to the flashboard and is kept away from the one end of pipeline, the pull rope other end is connected and is fastened the subassembly, it sets up in the casing to fasten the subassembly, fasten the subassembly and catch the haulage rope and loosen the haulage rope when the pipeline both ends take place the pressure differential accent and change.
When the pipeline normally overflows, the flashboard is drawn into the shell by the tractive, the pipeline carries out low resistance with big runner and overflows, when the flashboard is received in the shell, the power storage spring is compression state, the haulage rope is straight, when the water hammer change takes place for the pressure at the pipeline both ends, the haulage rope is loosened to the tightening assembly, the flashboard is sent into in the pipeline fast, cut off the runner, let the inertia of water pile up only toward flashboard department forward pressure, can not further exert pressure toward rear end point department, tightening assembly still undertakes the flashboard reset process after the water hammer, after the water hammer takes place and eliminates, the haulage rope is withheld again to the tightening assembly, can use the water that overflows in the pipeline of new period to provide power above tight haulage rope, with the flashboard again in the shell.
The tightening assembly comprises a rotating wheel, a floating shaft, a worm and a worm wheel, the rotating wheel and the worm are both arranged on the floating shaft, the axis of the floating shaft is perpendicular to the axis of the pipeline and is staggered with the axis of the pipeline, the floating shaft is arranged in a reciprocating floating mode along the axis direction of the pipeline, the worm wheel is arranged on the inner wall of the shell, the axis of the worm wheel is perpendicular to the worm, when the floating shaft moves to one side close to the worm wheel, the worm wheel is meshed with the worm wheel, a straight groove arranged along the length direction of the pipe wall is arranged on the pipe wall of the pipeline, the outer edge of the rotating wheel penetrates through the straight groove and extends into the pipeline,
and one end of the traction rope, which is far away from the flashboard, is wound on the turbine.
When normally overflowing, the water in the pipeline can drive the runner and rotate, the worm rotates when the runner rotates, for the state when worm turbine meshing this moment, the turbine rotates and rolls up the haulage rope, as long as the meshing of turbine worm, then the haulage rope just can not loosen, after pipeline both ends pressure change, floating shaft shift position, the worm turbine no longer meshes, and the turbine can free rotation, and the haulage rope is loosened, and the flashboard cuts off the pipeline fast under the effect of holding power spring. After the effect of the water hammer is used, the pressure at the two ends of the pipeline returns to a lower pressure difference again, the floating shaft moves towards the turbine again, the turbine worm is meshed, the force storage spring ejects the flashboard and then stabilizes the flashboard, a certain gap exists between the flashboard and the inner wall of the pipeline in a designed mode, the flashboard ejects and occupies the whole overflowing area in the pipeline in a short time when the water hammer occurs, after the flashboard slowly stops, a certain gap is exposed between the flashboard and the inner wall of the pipeline, after the main valve is opened in the next period, a small amount of fluid in the overflowing pipe and the pipeline starts to flow, the rotating wheel can rotate as long as overflowing occurs, the turbine is driven to roll up the traction rope, and the flashboard is opened to the maximum position. The worm gear can be self-locked, only the motion is transmitted in a single direction, the worm gear can be designed with a larger transmission ratio, the rotating wheel rotates with smaller force, and the larger counterforce of the force accumulation spring can be overcome at the last stage of the force accumulation of the flashboard.
The axis of the floating shaft is perpendicular to the sliding direction of the gate plate, the part of the rotating wheel in the pipeline is close to the plane of the gate plate, and the rotating wheel and the gate plate are respectively arranged in opposite wall surfaces of the pipeline.
The runner is just behind the pipeline plane that the flashboard will cut off, and when overflowing in the next period, the small amount of water that overflows from the gap below the flashboard can all overflow near the runner to promote the runner to rotate and more quickly roll up the haulage rope so that the pipeline is fully opened.
The truncation assembly further comprises a guide wheel which is used for guiding the bending position of the traction rope.
The guide pulley reduces the resistance that the haulage rope position slided of buckling.
The water hammer preventing device also comprises a switching component, the switching component is arranged in the shell and is used for switching the position of the floating shaft,
the switching component comprises a floating installation frame, a first cylinder body, a second cylinder body, a first connecting pipe and a second connecting pipe, wherein output shafts of the first cylinder body and the second cylinder body are arranged face to face, the connecting direction of the first cylinder body and the second cylinder body is parallel to the axis of the pipeline, the cylinder body parts of the first cylinder body and the second cylinder body are fixed on the inner wall surface of the shell, two sides of the floating installation frame are respectively connected with output ends of the first cylinder body and the second cylinder body, one end of the first connecting pipe is connected to a cavity far away from the floating installation frame in the first cylinder body, the other end of the first connecting pipe is connected to one end, close to the main valve, in the pipeline flow passage, one end of the second connecting pipe is connected to the cavity far away from the floating installation frame in the second cylinder body, the other end of the second connecting pipe is connected to one end, far away from the main valve, and the first cylinder body and the turbine are positioned on the same side of the floating shaft,
the floating shaft is rotatably mounted on the floating mounting frame.
The pressure is respectively introduced from two points in the pipeline and enters a first cylinder body and a second cylinder body, in a state except a water hammer, the pressure connected to the second cylinder body is higher than the pressure connected to the first cylinder body, the floating shaft is extruded to the turbine, the turbine and the worm are kept in a meshed state, the rotating wheel rotates to store force for a cut-off assembly, when the pressure difference at two ends of the pipeline is turned, as long as a small reverse pressure difference is reflected, the pressure is transmitted to the two cylinder bodies to push the floating shaft towards the direction away from the turbine, the self-locking of the turbine is released, the traction rope is released to prevent the trend that water in front of the pipeline moves towards the rear, the first cylinder body and the second cylinder body are both of a cylinder body plus piston structure, the piston extends out of an output shaft towards one side of the floating shaft, the cylinder body is separated into two chambers by the piston, and the chambers far away from the floating shaft in the two cylinder bodies are used for injecting pressure.
The switching assembly further comprises a pressing spring which is arranged in a cavity far away from the floating shaft in the second cylinder body. When the pressure difference between the two connecting pipes is small, the floating shaft is close to the turbine.
The water hammer preventing device further comprises a pressure guiding pipe, one end of the pressure guiding pipe is connected to the overflow pipe behind the main valve, and the other end of the pressure guiding pipe is connected to the cavity of the second cylinder body.
When the water hammer takes place, the rear side of main valve is the pressure reduction point, because the water body behind the main valve has the inertia of forward motion, can be after the main valve is closed suddenly, the great degree reduces the pressure in main valve rear, in this pressure drainage to the second cylinder, be used for further promoting two cylinders to the judgement speed when the water hammer takes place, can more change pressure differential direction in first cylinder and the second cylinder, adjust the floating shaft position, the suction pipe and first takeover, the second takeover should be thinner, so that the change propagation velocity of pressure will be faster than the pressure change propagation velocity in flow-through pipe and the pipeline.
The water hammer preventing device is connected in series to the overflow pipe in front of the main valve. The multiple water hammer devices are used for multi-stage compression resistance, each water hammer device is used for cutting off the backward flowing trend of fluid in the overflow pipe, when the water hammer devices are used, one water hammer device closest to the main valve of the cut-off point acts, then secondary water hammer action occurs in a pipeline in front of the water hammer device, each water hammer device in front is sequentially moved to cut off the backward flowing of the fluid, and the backward pressure accumulation is prevented from rising.
Compared with the prior art, the invention has the following beneficial effects: the invention operates the intercepting component to rapidly cut off the trend of the backward movement of the water body in the pipeline in front of the intercepting point by sensing the turning of the relative magnitude of the pressure in the pipeline when the water hammer action occurs, does not enable more water bodies to be extruded backwards in an inertia mode so as to further improve the pressure in front of the intercepting point, controls the pressure in front of the intercepting point to be at a lower pressure which can be borne by the wall surface of the pipeline, gradually accumulates the inertia pressure generated by the water body which moves backwards in the overflow pipe in front of each intercepting component, distributes the acting force of the water hammer to bear, prevents the pipeline at the intercepting point from being damaged by bearing high pressure locally, does not need a pressure stabilizing tank structure with larger volume, completely resists the rise of the pressure of the fluid by depending on the structural strength of the self, obtains energy from the fluid to store the force in the normal flowing process of the acting force of the intercepting component, in this position, the accumulated force is quickly released to operate after a slight amount of water hammer occurs in the water hammer preventing device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the present invention in a use position;
FIG. 2 is a graphical representation of the pressure change over the flow tube before and after use of the present invention;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a schematic view of the structure at the tightening assembly of the present invention;
FIG. 5 is a view from the direction A in FIG. 4;
FIG. 6 is a schematic diagram of the structure at the switching assembly of the present invention;
in the figure: 1-pipeline, 2-shell, 3-cut-off component, 31-flashboard, 32-power spring, 33-traction rope, 34-guide wheel, 4-tightening component, 41-rotating wheel, 42-floating shaft, 43-worm, 44-turbine, 5-switching component, 51-floating mounting rack, 52-first cylinder, 521-piston, 53-second cylinder, 54-first connecting pipe, 55-second connecting pipe, 56-abutting spring, 6-pressure pipe, 91-overflow pipe and 92-main valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution:
the utility model provides a pipeline is with absorbing waterproof hammer device of multistage resistance to compression, waterproof hammer device installs on flow tube 91 to waterproof hammer device is located the place ahead of main valve 92, and waterproof hammer device includes pipeline 1, casing 2, cuts subassembly 3, and 1 both ends of pipeline are connected with flow tube 91, sets up casing 2 on the 1 lateral wall of pipeline, sets up in the casing 2 and cuts subassembly 3, cuts subassembly 3 and cuts pipeline 1 after pipeline 1 is terminal produces the malleation difference with the front end.
As shown in fig. 1, the flow pipe 91 serves as a fluid flow passage, and has several process components, such as a booster pump, an on-off valve, etc., and in this application, a main valve 92 is taken as an example for illustration, during normal flow, except for the pressure rise of the booster pump, the fluid advances in the flow pipe 91 and is continuously depressurized, and a specific qualitative pressure change is shown in fig. 2, in which the horizontal axis represents the length direction of the flow pipe, the vertical axis represents the pressure, the water hammer position in this application means the main valve position, the curve of the flow pressure is slowly reduced, when the main valve 92 is suddenly closed, the flow pipe 91 generates a water hammer action, the pressure rises to be very high in a short time before the closing point, and the present application adds an off-off component 3, on the pipeline in front of the main valve 92, when the water hammer occurs, the pressure relative relationship that is gradually reduced along the flow pipe is turned, and the point that is higher in a place near the back of the off point, and the coming flow direction of the flow passage is a point with lower pressure, according to the adjustment change of the relative magnitude of the pressure difference, the interception component 3 is controlled to cut off the pipeline 1, no more fluid collides to the interception point but to the interception component 3, the pressure does not rise any more in the flow passage section between the interception component 3 and the main valve 92 as the interception point, so that the pressure rise caused by water hammer does not rise too much at the position in front of the main valve 92, the adjustment curve shown in fig. 2 is obtained, the limit pressure of the adjustment curve is higher than the general pressure during overflowing, but is obviously lower than the limit pressure of the water hammer without any protective measures, namely, the Δ p in fig. 2, and the overflow pipe 91 can bear the pressure under the adjustment curve without deformation.
The cut-off component 3 comprises a flashboard 31, a power storage spring 32, a traction rope 33, the water hammer preventing device also comprises a tightening component 4,
flashboard 31 slidable mounting is in casing 2, flashboard 31 slip direction perpendicular to 1 central line of pipeline, flashboard 31 passes 1 pipe wall position department of pipeline and sets up sealedly, hold power spring 32 one end and support flashboard 31 and keep away from the one end of pipeline 1, hold power spring 32 other end and support the casing 2 inner wall, haulage rope 33 one end is connected to the one end that flashboard 31 kept away from pipeline 1, the tight subassembly 4 is connected to the haulage rope 33 other end, the tight subassembly 4 sets up in casing 2, the tight subassembly 4 catches on haulage rope 33 and loosens haulage rope 33 when the pressure differential accent takes place at pipeline 1 both ends.
As shown in fig. 3, when the pipeline 1 is overflowing normally, the gate plate 31 is pulled and retracted into the housing 2, the pipeline 1 is overflowing with a large flow passage and with a low resistance, when the gate plate 31 is retracted into the housing 2, the power storage spring 32 is in a compressed state, the pulling rope 33 is straightened, when the pressure at two ends of the pipeline 1 changes due to water hammer, the pulling rope 33 is loosened by the tightening assembly 4, the gate plate 31 is rapidly sent into the pipeline 1, the flow passage is cut off, the inertia forward pressure of the water body is accumulated only towards the gate plate 31 and is not further pressed towards the rear end point, the tightening assembly 4 also undertakes the resetting process of the gate plate 31 after the water hammer, after the water hammer is generated and eliminated, the tightening assembly 4 pulls the pulling rope 33 again, the pulling rope 33 can be powered by the overflowing water body in the pipeline 1 in a new period to pull the pulling rope 33, and the gate plate 31 is retracted into the housing 2 again.
The tightening assembly 4 comprises a rotating wheel 41, a floating shaft 42, a worm 43 and a worm wheel 44, wherein the rotating wheel 41 and the worm 43 are arranged on the floating shaft 42, the axis of the floating shaft 42 is perpendicular to the axis of the pipeline 1 and is staggered with the axis of the pipeline 1, the floating shaft 42 is arranged in a reciprocating floating mode along the axis of the pipeline 1, the worm wheel 44 is arranged on the inner wall of the shell 2, the axis of the worm wheel 44 is perpendicular to the worm 43, when the floating shaft 42 moves to one side close to the worm wheel 44, the worm wheel 43 is meshed with the worm wheel 44, a straight groove arranged along the length direction of the pipe wall of the pipeline 1 is formed, the outer edge of the rotating wheel 41 penetrates through the straight groove and extends into the pipeline 1,
the end of the pull cord 33 remote from the gate 31 is wound onto the worm gear 44.
As shown in fig. 4 and 5, during normal overflowing, the water body in the pipeline 1 can drive the rotating wheel 41 to rotate, the worm 43 rotates while the rotating wheel 41 rotates, and at this time, in a state when the worm and the worm wheel are engaged, the worm wheel 44 rotates to wind up the traction rope 33, as long as the worm and the worm wheel are engaged, the traction rope 33 cannot be loosened, after the pressure at two ends of the pipeline 1 changes, the floating shaft 42 moves, the worm and the worm wheel are not engaged, the worm wheel can rotate freely, the traction rope 33 is loosened, and the flashboard 31 cuts off the pipeline 1 quickly under the action of the power storage spring 32. After the water hammer is acted, the pressure at the two ends of the pipeline 1 returns to a lower pressure difference again, the floating shaft 42 moves towards the turbine 44 again and enables the turbine worm to be meshed, when the flashboard 31 is ejected by the power storage spring 32 and then stabilized, a certain gap can exist between the flashboard 31 and the inner wall of the pipeline 1 in a designed mode, in a short time when the water hammer occurs, the flashboard 31 is ejected to occupy the whole overflowing area in the pipeline 1, after the flashboard 31 slowly stops, a certain gap is exposed between the flashboard 31 and the inner wall of the pipeline 1, after the main valve 92 is opened in the next period, a small amount of fluid starts to flow in the overflowing pipe 91 and the pipeline 1, the runner 41 can rotate as long as the overflowing occurs, the turbine 44 is driven to roll up the traction rope 33, and the flashboard 31 is opened to the maximum position. The worm gear can be self-locked, only the movement is transmitted in a single direction, the worm gear can be designed to have a larger transmission ratio, the rotating wheel 41 rotates with smaller force, and the counter force of the larger force storage spring 32 can be overcome at the end of the force storage of the gate plate 31.
The axis of the floating shaft 42 is perpendicular to the sliding direction of the shutter 31, the part of the runner 41 in the pipeline 1 is adjacent to the plane of the shutter 31, and the runner 41 and the shutter 31 are respectively in the opposite wall surfaces of the pipeline 1.
As shown in fig. 3 and 4, the wheel 41 is located just behind the plane of the pipeline 1 to be cut by the shutter 31, and at the next period of flow, a small amount of water flowing from the gap below the shutter 31 will flow all the way around the wheel 41, thereby pushing the wheel 41 to rotate and winding up the pull rope 33 more quickly to fully open the pipeline 1.
The chopping assembly 3 further comprises a guide wheel 34, which guide wheel 34 serves as a guide for the bending position of the traction rope 33.
The guide pulley 34 reduces the resistance to the sliding of the bending position of the traction rope 33.
The water hammer prevention device further comprises a switching assembly 5, the switching assembly 5 is arranged in the shell 2, the switching assembly 5 is used for position switching of the floating shaft 42,
the switching assembly 5 comprises a floating mounting frame 51, a first cylinder 52, a second cylinder 53, a first connecting pipe 54 and a second connecting pipe 55, output shafts of the first cylinder 52 and the second cylinder 53 are arranged in a face-to-face manner, the connecting direction of the first cylinder 52 and the second cylinder 53 is parallel to the axis of the pipeline 1, the cylinder parts of the first cylinder 52 and the second cylinder 53 are fixed on the inner wall surface of the shell 2, two sides of the floating mounting frame 51 are respectively connected with output ends of the first cylinder 52 and the second cylinder 53, one end of the first connecting pipe 54 is connected to a cavity in the first cylinder 52 far away from the floating mounting frame 51, the other end of the first main valve 54 is connected to one end in the flow passage of the pipeline 1 close to the connecting pipe 92, one end of the second connecting pipe 55 is connected to a cavity in the second cylinder 53 far away from the floating mounting frame 51, the other end of the second connecting pipe 55 is connected to one end in the flow passage of the pipeline 1 far away from the main valve 92, the first cylinder 52 and the turbine 44 are positioned on the same side of the floating shaft 42,
the floating shaft 42 is rotatably mounted on a floating mounting 51.
As shown in fig. 4 and 5, pressure is introduced into the first cylinder 52 and the second cylinder 53 from two points in the pipe 1, in a state except for the water hammer, the pressure connected into the second cylinder 53 is higher than the pressure connected into the first cylinder 52, the floating shaft 42 is extruded to the turbine 44, the turbine worm keeps a meshed state, the rotating wheel 41 rotates to store the force of the intercepting component 3, when the pressure difference between the two ends of the pipeline 1 is adjusted, as long as a small reverse pressure difference is reflected, the floating shaft 42 is pushed away from the turbine 44 by the transmission to the two cylinders, the self-locking of the turbine 44 is released, the traction rope 33 is released, and the tendency of water in front of the pipeline 1 to move towards the rear is prevented, the first cylinder 52 and the second cylinder 53 are both in a cylinder and piston 521 structure, the piston extends out of the output shaft towards one side of the floating shaft 42, the piston 521 separates the cylinders into two chambers, and the two chambers in the cylinders, which are away from the floating shaft 42, are used for injecting pressure.
The switching assembly 5 further comprises a biasing spring 56, the biasing spring 56 being arranged in a chamber in the second cylinder 53 remote from the floating shaft 42. As shown in fig. 5 and 6, the floating shaft 42 is located close to the turbine 44 when the pressure difference between the two pipe joints by the biasing spring 56 is small.
The water hammer prevention device further includes a pressure introduction pipe 6, one end of the pressure introduction pipe 6 is connected to the flow-through pipe 91 behind the main valve 92, and the other end of the pressure introduction pipe 6 is connected to the inside of the chamber of the second cylinder 53.
As shown in fig. 1, 2, 4, and 5, when a water hammer occurs, the rear side of the main valve 92 is a pressure reducing point, because the water body behind the main valve 92 has inertia moving forward, the pressure behind the main valve 92 is greatly reduced after the main valve 92 is suddenly closed, and the pressure is led into the second cylinder 53 to further increase the judging speed of the two cylinders for the water hammer occurrence, the pressure difference direction can be faster adjusted in the first cylinder 52 and the second cylinder 53, the position of the floating shaft 42 is adjusted, the pressure leading pipe 6 and the first connecting pipe 54, and the second connecting pipe 55 should be thin, so that the propagation speed of the pressure change is faster than the propagation speed of the pressure change in the flow pipe 91 and the pipeline 1.
A water hammer prevention device is used in series on the flow tube 91 before the main valve 92. As shown in fig. 1 and 2, a plurality of water hammer prevention devices are used for multi-stage pressure resistance, each water hammer prevention device is used for cutting off the backward flowing trend of the fluid in the overflow pipe 91, when the water hammer prevention device is used, the water hammer prevention device closest to the cut-off point main valve 92 is operated, then secondary water hammer action is generated in the pipeline in front of the water hammer prevention device, each water hammer prevention device in front is sequentially moved to cut off the backward flowing of the fluid, the backward pressure accumulation is prevented from rising, and the final adjusting curve is shown in fig. 2.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a pipeline is with multistage resistance to compression absorbing waterproof hammer device, waterproof hammer device installs on overflow pipe (91) to waterproof hammer device is located the place ahead of main valve (92), its characterized in that: the water hammer preventing device comprises a pipeline (1), a shell (2) and a cutting assembly (3), wherein two ends of the pipeline (1) are connected with an overflow pipe (91), the shell (2) is arranged on the side wall of the pipeline (1), the cutting assembly (3) is arranged in the shell (2), and the pipeline (1) is cut off after positive pressure difference is generated between the tail end and the front end of the pipeline (1) by the cutting assembly (3);
the cut-off component (3) comprises a flashboard (31), a power storage spring (32), a traction rope (33), the waterproof hammer device also comprises a tightening component (4),
the gate plate (31) is slidably mounted in the shell (2), the sliding direction of the gate plate (31) is perpendicular to the central line of the pipeline (1), the gate plate (31) penetrates through the pipe wall of the pipeline (1) to be sealed, one end of the force storage spring (32) abuts against one end, away from the pipeline (1), of the gate plate (31), the other end of the force storage spring (32) abuts against the inner wall of the shell (2), one end of the traction rope (33) is connected to one end, away from the pipeline (1), of the gate plate (31), the other end of the traction rope (33) is connected with the tightening assembly (4), the tightening assembly (4) is arranged in the shell (2), and the tightening assembly (4) hooks the traction rope (33) and loosens the traction rope (33) when pressure difference occurs at the two ends of the pipeline (1) and is adjusted;
the tightening assembly (4) comprises a rotating wheel (41), a floating shaft (42), a worm (43) and a turbine (44), wherein the rotating wheel (41) and the worm (43) are arranged on the floating shaft (42), the axis of the floating shaft (42) is perpendicular to the axis of the pipeline (1) and is staggered with the axis of the pipeline (1), the floating shaft (42) is arranged in a reciprocating floating mode along the axis direction of the pipeline (1), the turbine (44) is arranged on the inner wall of the shell (2), the axis of the turbine (44) is perpendicular to the worm (43), when the floating shaft (42) moves to one side close to the turbine (44), the worm (43) is meshed with the turbine (44), a straight groove arranged along the length direction of the pipeline (1) is formed in the pipe wall of the pipeline (1), and the outer edge of the rotating wheel (41) penetrates through the straight groove and extends into the pipeline (1),
the end of the traction rope (33) far away from the flashboard (31) is wound on the turbine (44).
2. The multistage compression-resistant and shock-absorbing waterproof hammer device for the pipeline as claimed in claim 1, wherein: the axis of the floating shaft (42) is perpendicular to the sliding direction of the gate plate (31), the part of the runner (41) in the pipeline (1) is adjacent to the plane of the gate plate (31), and the runner (41) and the gate plate (31) are respectively arranged in opposite wall surfaces of the pipeline (1).
3. The multistage compression-resistant and shock-absorbing waterproof hammer device for the pipeline as claimed in claim 1, wherein: the cutting assembly (3) further comprises a guide wheel (34), and the guide wheel (34) is used for guiding the bending position of the traction rope (33).
4. The multistage compression-resistant and shock-absorbing waterproof hammer device for the pipeline as claimed in claim 1, wherein: the water hammer prevention device further comprises a switching assembly (5), the switching assembly (5) is arranged in the shell (2), the switching assembly (5) is used for position switching of the floating shaft (42),
the switching assembly (5) comprises a floating mounting frame (51), a first cylinder body (52), a second cylinder body (53), a first connecting pipe (54) and a second connecting pipe (55), output shafts of the first cylinder body (52) and the second cylinder body (53) are arranged in a face-to-face mode, the connecting line direction of the first cylinder body (52) and the second cylinder body (53) is parallel to the axis of the pipeline (1), the cylinder body parts of the first cylinder body (52) and the second cylinder body (53) are fixed to the inner wall surface of the shell (2), two sides of the floating mounting frame (51) are respectively connected with the output ends of the first cylinder body (52) and the second cylinder body (53), one end of the first connecting pipe (54) is connected to a cavity in the first cylinder body (52) far away from the floating mounting frame (51), the other end of the first connecting pipe (54) is connected to one end, close to the main valve (92), in a flow channel of the pipeline (1), one end of the second connecting pipe (55) is connected to a cavity in the second cylinder body (53) far away from the floating mounting frame (51), the other end of the second connecting pipe (55) is connected to one end of the flow passage of the pipeline (1) far away from the main valve (92), the first cylinder (52) and the turbine (44) are positioned on the same side of the floating shaft (42),
the floating shaft (42) is rotatably mounted on a floating mounting frame (51).
5. The multistage compression-resistant and shock-absorbing waterproof hammer device for the pipeline as claimed in claim 4, wherein: the switching assembly (5) further comprises a butting spring (56), and the butting spring (56) is arranged in a cavity, far away from the floating shaft (42), in the second cylinder body (53).
6. The multistage compression-resistant damping waterproof hammer device for the pipeline according to claim 4, wherein: the water hammer preventing device further comprises a pressure guiding pipe (6), one end of the pressure guiding pipe (6) is connected to the overflow pipe (91) behind the main valve (92), and the other end of the pressure guiding pipe (6) is connected into a cavity of the second cylinder body (53).
7. The multistage compression-resistant and shock-absorbing waterproof hammer device for the pipeline as claimed in claim 1, wherein: the water hammer preventing device is connected in series to be used on an overflow pipe (91) in front of a main valve (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418652.1A CN114517866B (en) | 2022-04-21 | 2022-04-21 | Pipeline is with multistage resistance to compression absorbing waterproof hammer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210418652.1A CN114517866B (en) | 2022-04-21 | 2022-04-21 | Pipeline is with multistage resistance to compression absorbing waterproof hammer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114517866A CN114517866A (en) | 2022-05-20 |
| CN114517866B true CN114517866B (en) | 2022-07-01 |
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| CN202210418652.1A Active CN114517866B (en) | 2022-04-21 | 2022-04-21 | Pipeline is with multistage resistance to compression absorbing waterproof hammer device |
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| CN (1) | CN114517866B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100564167B1 (en) * | 2005-04-29 | 2006-03-27 | 주식회사 경동네트웍 | Flow sensing switch |
| CN201218219Y (en) * | 2008-07-11 | 2009-04-08 | 湖南泵阀制造有限公司 | Sleeve type multi-functional water power control valve |
| CN209622272U (en) * | 2019-03-06 | 2019-11-12 | 周振龙 | A kind of intake valve that can share water hammer pressure |
| CN112648465A (en) * | 2020-12-16 | 2021-04-13 | 安徽红星阀门有限公司 | Water hammer eliminating tank |
| CN216279589U (en) * | 2021-09-25 | 2022-04-12 | 左张余 | Impact-proof valve for pipeline |
-
2022
- 2022-04-21 CN CN202210418652.1A patent/CN114517866B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100564167B1 (en) * | 2005-04-29 | 2006-03-27 | 주식회사 경동네트웍 | Flow sensing switch |
| CN201218219Y (en) * | 2008-07-11 | 2009-04-08 | 湖南泵阀制造有限公司 | Sleeve type multi-functional water power control valve |
| CN209622272U (en) * | 2019-03-06 | 2019-11-12 | 周振龙 | A kind of intake valve that can share water hammer pressure |
| CN112648465A (en) * | 2020-12-16 | 2021-04-13 | 安徽红星阀门有限公司 | Water hammer eliminating tank |
| CN216279589U (en) * | 2021-09-25 | 2022-04-12 | 左张余 | Impact-proof valve for pipeline |
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| Publication number | Publication date |
|---|---|
| CN114517866A (en) | 2022-05-20 |
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