CN115854160A - Piston type water hammer slow release device - Google Patents
Piston type water hammer slow release device Download PDFInfo
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- CN115854160A CN115854160A CN202211487410.4A CN202211487410A CN115854160A CN 115854160 A CN115854160 A CN 115854160A CN 202211487410 A CN202211487410 A CN 202211487410A CN 115854160 A CN115854160 A CN 115854160A
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- valve core
- valve
- water hammer
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- release device
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Abstract
The embodiment of the invention provides a piston type water hammer slow-release device, relates to the technical field of water hammer slow-release devices, and has the functions of protecting pipelines and prolonging the service life of pipeline components. The device comprises: the valve comprises a valve shell, a valve core seat, a spring seat, a valve core supporting plate, a valve core and a transition pipe; the valve core seats are fixedly connected with the valve shell respectively, the spring seats are connected with the valve core seats through threads respectively, the spring pressure is adjusted through the rotary spring seats respectively, the lower valve core supporting plate moves under the action of spring force, the corresponding valve cores are pushed by the valve core supporting plate to move, and the transition pipes are arranged between the valve shells and connected through flanges.
Description
Technical Field
The invention relates to the technical field of water hammer slow-release devices, in particular to a piston type water hammer slow-release device.
Background
During the process of transporting fluid in a pipeline, water hammer can be caused by the sudden stop of pipe flow. Due to the large impact force of the water hammer, damage or damage to the connection equipment in the pipeline may result. In the current pipeline design, an energy accumulator CN107842646A or a water hammer protection valve CN208381402U or the like is used for absorbing kinetic energy of a water hammer, discharging or storing the kinetic energy of the water hammer or eliminating water hammer impact in a pipeline pressure relief mode.
As shown in fig. 1, the accumulator CN107842646a is mainly composed of 2 parts, such as a housing 11, an expandable liner 12, an inflation valve 111, a pressure relief valve 112, and a connecting pipe. As shown in fig. 2, when there is a water hammer in the pipeline, the accumulator draws the water hammer pressure into the inflatable bladder 12, the air between the inflatable bladder 12 and the housing 11 is compressed and the pressure increases, and when the pipeline pressure decreases, the inflatable bladder 12 contracts and the fluid in the accumulator is squeezed back into the pipeline.
As shown in fig. 3, the water hammer protection valve CN208381402U is mainly composed of a valve body 1, a valve rod 2, a large valve flap 3, a small valve flap 4, a guide seat 5, an upper cavity 6, a lower cavity 7, a liquid inlet valve 8, a liquid outlet valve 9, a valve cover 10 and guide columns 11 and 12. When the pipe flow entering the protection valve from the inlet valve 8 is flowing normally, the valve flap 3,4 is normally open; as shown in fig. 4, when the flow of pipe from the inlet valve 8 into the protection valve stops, the valve flap 3,4 closes, thereby blocking the flow and isolating the effect of the water hammer.
With reference to fig. 1 and 2, the tank-type energy accumulator is often internally provided with a compression airbag, so that the energy accumulator has a larger overall structure and a larger occupied space, and has certain space requirements for installation areas. The energy accumulator regulating valve is positioned at the top, and the requirements on regulation and maintenance are higher. The air bag in the accumulator is easy to be damaged due to long-term deformation and needs to be replaced regularly.
With reference to fig. 3 and 4, the water hammer protection valve can only block the transmission of pressure in one direction, when the water hammer is transmitted to the wall surface of the valve clack 3,4, the pressure can be transmitted in the opposite direction, and the water hammer protection valve can only protect the pipeline equipment upstream of the valve from being impacted by the water hammer and cannot protect the pipeline equipment downstream. And the diaphragm inside the valve cavity is deformed for a long time, is easy to damage and needs to be replaced regularly.
Disclosure of Invention
In order to solve the technical problems, the invention provides a piston type water hammer slow release device which has the functions of protecting a pipeline and prolonging the service life of a pipeline assembly by isolating and gradually releasing water hammers appearing in the pipeline and has the advantages of small volume, simple structure, durable use and the like.
The invention adopts the following technical scheme:
a piston-type water hammer release device comprising: the valve comprises a valve shell, a valve core seat, a spring seat, a valve core supporting plate, a valve core and a transition pipe; the valve core seats are fixedly connected with the valve shell respectively, the spring seats are connected with the valve core seats through threads respectively, the spring pressure is adjusted through the rotary spring seats respectively, the lower valve core supporting plate moves under the action of spring force, the corresponding valve cores are pushed by the valve core supporting plate to move, and the transition pipes are arranged between the valve shells and connected through flanges.
The valve cartridge includes: the device comprises a hydraulic plate, a closed ring, a thick limiting rod and a thin limiting rod; the hydraulic plates comprise four pieces and are uniformly distributed in the closed ring in the circumferential direction, one end of each hydraulic plate is fixedly connected with the closed ring, and the other end of each hydraulic plate is connected with one end of the thick limiting rod; the other end of the thick limiting rod is connected with one end of the thin limiting rod.
The valve spring seat includes: the device comprises a hexagonal bolt head, a threaded seat and a limiting cylinder; the limiting sleeve is a hollow cylinder; the valve core seat is in threaded connection with the threaded seat, and the hexagonal bolt head is rotated to install and adjust the pressure of the spring; the thin limiting rod is accommodated in the limiting cylinder to limit the limiting cylinder, and the spring is limited outside the limiting cylinder.
The valve housing includes: an external pipe connector, a flow cavity, a valve core slide way and a transition pipe connector; one end of the external pipe connecting port is communicated with one end of the flow cavity, and the other end of the flow cavity is communicated with one end of the valve core slide way; the flow cavity is a hollow cylinder, the external pipe connecting port and the transition pipe connecting port are hollow cylinders, and the diameter of the flow cavity is larger than that of the external pipe connecting port or the transition pipe connecting port; the other end of the external pipe connector and the other end of the transition pipe connector are both provided with flange interfaces; the spool slide is used to limit the direction of movement of the spool.
The valve core seat comprises: the valve core slide way is arranged on the outer wall of the valve core slide way;
the thread inner barrel is matched with the thread seat; the smooth inner cylinder is internally provided with the valve core supporting plate and is used for limiting the moving direction of the valve core supporting plate; the valve core is accommodated in the valve core slide way and used for limiting the moving direction of the valve core; and the outer wall is provided with a connecting end for connecting with the shell, and fluid flows between the shell and the outer wall of the valve core seat.
The transition pipe is a metal pipeline and is provided with a flange connector.
The outer diameter of the spring is smaller than the inner diameter of the sent thread inner cylinder and the inner diameter of the smooth inner cylinder, and is larger than the outer diameter of the spring seat limiting cylinder.
The link includes a plurality ofly along the circumferencial direction equipartition on the outer wall.
Has the advantages that:
in the piston type water hammer slow-release device provided by the embodiment of the invention, the water hammer is isolated in two directions, the forward transmission of the water hammer is prevented, and the reverse transmission of the water hammer is restrained. The valve isolation valve core is returned by the spring, so that the water hammer can be released quickly, and the pipeline is not impacted. The two ends of the valve are designed into piston type valve cores, the valve cores are reset through springs, and the spring force strength of the valve cores can be adjusted through bottom nuts. The water hammer is isolated between the two valves through the valve baffle, so that the water hammer is prevented from being transmitted to other equipment in the pipeline. The valve core is under the pressure of the spring, and the flow channel can be opened after being impacted by the water hammer, so that the kinetic energy of the water hammer can be released at a certain speed in the oscillation process. The baffle of valve resets with the spring, and fatigue resistance is strong. The valve has small integral structure, high strength and high reliability.
Drawings
FIG. 1 is a schematic diagram of an accumulator according to the prior art;
FIG. 2 is a cross-sectional view of the accumulator shown in FIG. 1;
FIG. 3 is a schematic diagram of a prior art water hammer prevention valve;
FIG. 4 is a schematic fluid flow diagram of the water hammer prevention valve shown in FIG. 3;
fig. 5 is a schematic structural diagram of a piston-type water hammer sustained-release device in a normal state according to an embodiment of the present invention;
FIG. 6 is a schematic view of a piston-type water hammer slow-release device provided by an embodiment of the invention when a water hammer enters an inlet end and passes through a transition pipe;
fig. 7 is a schematic diagram of the piston-type water hammer slow-release device according to the embodiment of the invention after the water hammer impacts the outlet valve core to close the outlet valve core;
FIG. 8 is a schematic structural diagram of a valve core of a piston type water slow release device provided by an embodiment of the invention;
FIG. 9 is a schematic structural diagram of a valve spring seat of the piston type water slow-release device provided by the embodiment of the invention;
fig. 10 is a schematic structural diagram of a valve housing of a piston type water slow-release device provided by an embodiment of the invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example one
As shown in fig. 5, the oil inlet valve and the outlet valve of the piston-type water hammer slow-release device are formed in the same way, and comprise valve housings 11 and 12, valve core seats 21 and 22, springs 31 and 32, spring seats 41 and 42, valve core supporting plates 51 and 52, valve cores 61 and 62 and a transition pipe 7. The valve core seats 21 and 22 are fixedly connected with the valve housings 11 and 12 respectively, the spring seats 41 and 42 are connected with the valve core seats 21 and 22 respectively through threads, the pressure of the springs 31 and 32 can be adjusted through rotating the spring seats 41 and 42 respectively, the valve core supporting plates 51 and 52 move under the action of spring force, the valve core supporting plates 51 and 52 push and push the corresponding valve cores to move 61 and 62, and the valve housings 11 and 12 are connected with the transition pipe 7 through standard flanges and fixed through bolts.
Under normal pressure, the valve cores 61 and 62 are pushed by the springs 31 and 32 to move, and are limited by the nozzle of the transition pipe 7 to move, and the valve is in an open state. Under the normal conveying state of the pipeline, the valve core 61 at the inlet end and the valve core 62 at the outlet end of the piston type water hammer slow release device are both in an open state, and fluid in the pipeline can normally flow.
Example two
As shown in fig. 6, the oil inlet valve and the outlet valve of the piston-type water hammer slow-release device are formed in the same way, and comprise valve housings 11 and 12, valve core seats 21 and 22, springs 31 and 32, spring seats 41 and 42, valve core supporting plates 51 and 52, valve cores 61 and 62 and a transition pipe 7. The valve core seats 21 and 22 are fixedly connected with the valve housings 11 and 12 respectively, the spring seats 41 and 42 are connected with the valve core seats 21 and 22 respectively through threads, the pressure of the springs 31 and 32 can be adjusted through rotating the spring seats 41 and 42 respectively, the valve core supporting plates 51 and 52 move under the action of spring force, the valve core supporting plates 51 and 52 push and push the corresponding valve cores to move 61 and 62, and the valve housings 11 and 12 are connected with the transition pipe 7 through standard flanges and fixed through bolts. When the water hammer enters the inlet end of the piston type water hammer slow-release device and passes through the transition pipe 7, the valve core 62 at the outlet end moves under the action of the pressure of the water hammer and is limited by the valve core seat 22 to move, and the valve is in a closed state. After the water hammer enters the piston type water hammer slow-release device, the valve core 61 at the inlet end is in an open state, the valve core 62 at the outlet end is in a closed state, and the water hammer is not transmitted forwards after entering the device.
Example three
As shown in fig. 7, the oil inlet valve and the outlet valve of the piston-type water hammer slow-release device are formed in the same way, and comprise valve housings 11 and 12, valve core seats 21 and 22, springs 31 and 32, spring seats 41 and 42, valve core supporting plates 51 and 52, valve cores 61 and 62 and a transition pipe 7. The valve core seats 21 and 22 are fixedly connected with the valve shells 11 and 12 respectively, the spring seats 41 and 42 are connected with the valve core seats 21 and 22 respectively through threads, the pressure of the springs 31 and 32 can be adjusted through the rotating spring seats 41 and 42 respectively, the valve core supporting plates 51 and 52 move under the action of spring force, the valve core supporting plates 51 and 52 push and push the corresponding valve cores 61 and 62 to move, and the valve shells 11 and 12 are connected with the transition pipe 7 through standard flanges and fixed through bolts. When the water hammer impacts the valve core 62 at the outlet end to close the valve core 62 at the outlet end, the water hammer is reversely transferred, the pressure at the valve core 62 at the outlet end is reduced, the valve core 62 at the outlet end is opened, and the pressure in the pipeline is released. When the water hammer is transmitted to the valve core 61 of the inlet end in a reverse direction, the valve core 62 of the inlet end is closed, and the reverse movement of the valve core of the inlet end is prevented. When the water hammer is reversely transmitted in the transition pipe, the valve core 62 at the outlet end is in an open state, the valve core 61 at the inlet end is in a closed state, and the water hammer is not reversely transmitted after entering the piston type water hammer slow-release device.
Example four
As shown in figure 8, the valve core 61 at the inlet end of the piston type water slow-releasing device is consistent with the valve core 62 at the outlet end, and the valve core comprises a hydraulic plate 611, a closed ring 612, a thick limiting rod 613 and a thin limiting rod 614. According to the invention, the downstream direction 8 and the flow-resisting direction 9 are designed for the valve core, when fluid flows in the downstream direction 8, the resistance to the fluid is smaller, the pressure to the valve core is smaller, and when fluid flows in the flow-resisting direction 9, the resistance to the fluid is larger, and the pressure to the valve core is larger.
Example five
As shown in fig. 9, the inlet end valve spring seat 41 of the piston type water hammer slow-release device is matched with the outlet end valve spring seat 42, and the spring seat 41 comprises a hexagonal bolt head 411, a threaded seat 412 and a limiting cylinder 413. The threaded seat 412 is in threaded connection with the valve core seat, and the spring pressure is installed and adjusted by rotating the hexagonal bolt head 411. The limiting cylinder 413 limits the valve core thin limiting rod 614, and the limiting cylinder 413 limits the spring 31.
Example six
As shown in fig. 10, the inlet valve housing 11 of the piston type water hammer slow-releasing device is identical with the outlet valve housing 12. The valve housing 11 includes an external pipe interface 111, a flow chamber 112, a valve core slide way 113 and a transition pipe interface 114, wherein the external pipe interface 111 and the transition pipe interface 114 adopt standard flange interfaces with corresponding pipe diameters, and the valve core slide way 113 is used for limiting the moving direction of the valve core.
Example seven
The inlet valve core seat 21 of the piston type water hammer slow release device is consistent with the outlet valve core seat 22. The valve core seat 21 comprises a threaded inner cylinder 211, a smooth inner cylinder 212, a valve core slide way 213, an outer wall 214 and a connecting end 215, wherein the threaded inner cylinder 211 is used for being connected with a threaded seat 411 of a spring seat, the smooth inner cylinder 212 is used for limiting the moving direction of the valve core supporting plate 51, the valve core slide way 213 is used for limiting the moving direction of the valve core 61, the connecting end 215 is used for being connected with the shell 11, and fluid flows between the shell 11 and the outer wall 214.
In the above embodiment, the transition pipe 7 of the piston-type water hammer slow-release device is a common metal pipeline, and the transition pipe 7 is a standard flange interface with a corresponding pipe diameter.
The springs 31 and 32 of the piston type water hammer slow-release device adopt mature standard products, the outer diameters of the springs 31 and 32 are smaller than the inner diameters of the thread inner cylinder and the smooth inner cylinder of the valve core seat, and the inner diameters of the springs 31 and 32 are larger than the outer diameter of the limiting cylinder 413.
The valve core supporting plates 51 and 52 of the piston type water hammer slow-release device adopt common metal cutting parts, the thickness is determined by the overall design characteristics of the device, the outer diameters of the valve core supporting plates 51 and 52 are smaller than the inner diameter of a smooth inner cylinder of a valve core seat, the outer diameters of the valve core supporting plates 51 and 52 are larger than the inner diameter of a valve core slide way of the valve core seat, the inner diameters of the valve core supporting plates 51 and 52 are larger than the diameter of a valve core thin limiting rod 614, and the inner diameters of the valve core supporting plates 51 and 52 are smaller than the diameter of a valve core thick limiting rod 613.
In the piston type water hammer slow-release device provided by the embodiment of the invention, the water hammer is isolated in two directions, the forward transmission of the water hammer is prevented, and the reverse transmission of the water hammer is restrained. The valve isolation valve core is returned by the spring, so that the water hammer can be released quickly, and the pipeline is not impacted. The two ends of the valve are designed into piston type valve cores, the valve cores are reset through springs, and the spring force strength of the valve cores can be adjusted through bottom nuts. The water hammer is isolated between the two valves through the valve baffle, and the transmission of the water hammer to other equipment in a pipeline is avoided. The valve core is under the pressure of the spring, and the flow channel can be opened after being impacted by the water hammer, so that the kinetic energy of the water hammer can be released at a certain speed in the oscillation process. The baffle of the valve is reset by a spring, and the fatigue resistance is strong. The valve has small integral structure, high strength and high reliability.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, device or terminal claims may also be implemented by one and the same unit, module or means in software or hardware.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting, and although the embodiments of the present invention are described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the embodiments of the present invention without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A piston-type water hammer slow-release device, comprising: the valve comprises valve housings (11, 12), valve core seats (21, 22), springs (31, 32), spring seats (41, 42), valve core supporting plates (51, 52), valve cores (61, 62) and a transition pipe (7); the valve core seats (21, 22) are fixedly connected with the valve housings (11, 12) respectively, the spring seats (41, 42) are connected with the valve core seats (21, 22) through threads respectively, the elastic forces of the springs (31, 32) are adjusted through rotating the spring seats (41, 42) respectively, the valve core supporting plates (51, 52) move under the elastic force action of the springs (31, 32), the valve core supporting plates (51, 52) push the corresponding valve cores (61, 62) to move, and the transition pipe (7) is arranged between the valve housings (11, 12) and connected through flanges.
2. The piston-type water hammer release device according to claim 1, wherein the valve core (61, 62) comprises: the device comprises a hydraulic plate (611), a closed ring (612), a thick limiting rod (613) and a thin limiting rod (614); the hydraulic plates (611) comprise four pieces and are uniformly distributed in the closed ring (612) in the circumferential direction, one end of each hydraulic plate (611) is fixedly connected with the closed ring (612), and the other end of each hydraulic plate is connected with one end of the coarse limiting rod (613); the other end of the thick limiting rod (613) is connected with one end of the thin limiting rod (614).
3. The piston-type water hammer release device according to claim 2, wherein the spring seat (41, 42) comprises: a hexagonal bolt head (411), a threaded seat (412) and a limiting cylinder (413); the limiting sleeve (413) is a hollow cylinder; the valve core seats (21, 22) are in threaded connection through the threaded seats (412), and spring pressure is installed and adjusted through rotating the hexagonal bolt head (411); the thin limiting rod (614) is contained in the limiting barrel (413) to limit the thin limiting rod, and the spring (31) is limited outside the limiting barrel (413).
4. A piston-type water hammer release device according to claim 3, wherein the valve housing (11, 12) comprises: an external pipe connection port (111), a flow chamber (112), a spool slide (113), and a transition pipe connection port (114); one end of the external pipe connecting port (111) is communicated with one end of the flow cavity (112), and the other end of the flow cavity (112) is communicated with one end of the valve core slide way (113); the flow cavity (112) is a hollow cylinder, the external pipe connection port (111) and the transition pipe connection port (114) are hollow cylinders, and the diameter of the flow cavity (112) is larger than that of the external pipe connection port (111) or the transition pipe connection port (114); the other end of the external pipe connecting port (111) and the other end of the transition pipe connecting port (114) are both provided with flange interfaces; the spool slide (113) is used to restrict the direction of movement of the spool (61, 62).
5. The piston-type water hammer release device according to claim 4, wherein the valve core seat (21, 22) comprises: the valve core comprises a threaded inner cylinder (211), a smooth inner cylinder (212), a valve core slide way (213), an outer wall (214) and a connecting end (215);
the threaded inner barrel (211) is matched with the threaded seat (412); the smooth inner cylinder (212) is internally provided with the valve core supporting plates (51, 52) for limiting the moving direction of the valve core supporting plates (51, 52); the valve core (61, 62) is accommodated in the valve core slide way (213) and used for limiting the moving direction of the valve core (61, 62); the outer wall (214) is provided with a connecting end (215) for connecting with the housing (11), and fluid flows between the housing (11, 12) and the outer wall (214).
6. The piston-type water hammer slow release device as claimed in claim 5, wherein the transition pipe (7) is a metal pipeline, and the transition pipe (7) is provided with a flange interface.
7. The piston-type water hammer release device as claimed in claim 6, wherein the outer diameter of the spring (31, 32) is smaller than the inner diameter of the fed threaded inner cylinder (211) and the smooth inner cylinder (212) and larger than the outer diameter of the limiting cylinder (413).
8. The piston-type water hammer release device as claimed in claim 6, wherein the connection ends (215) comprise a plurality of connection ends, which are circumferentially and uniformly distributed on the outer wall (214).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211487410.4A CN115854160A (en) | 2022-11-25 | 2022-11-25 | Piston type water hammer slow release device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211487410.4A CN115854160A (en) | 2022-11-25 | 2022-11-25 | Piston type water hammer slow release device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115854160A true CN115854160A (en) | 2023-03-28 |
Family
ID=85666221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211487410.4A Pending CN115854160A (en) | 2022-11-25 | 2022-11-25 | Piston type water hammer slow release device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115854160A (en) |
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2022
- 2022-11-25 CN CN202211487410.4A patent/CN115854160A/en active Pending
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