CN110410609A - A kind of water hammer cancellation element - Google Patents
A kind of water hammer cancellation element Download PDFInfo
- Publication number
- CN110410609A CN110410609A CN201910786322.6A CN201910786322A CN110410609A CN 110410609 A CN110410609 A CN 110410609A CN 201910786322 A CN201910786322 A CN 201910786322A CN 110410609 A CN110410609 A CN 110410609A
- Authority
- CN
- China
- Prior art keywords
- shell
- hole
- piston
- connect
- reservoir chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000005303 weighing Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 8
- 230000006378 damage Effects 0.000 abstract description 9
- 238000004080 punching Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 27
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of water hammer cancellation elements, comprising: shell, the side of shell water outlet are equipped with relief valve, are provided with through-hole on side wall of outer shell, another side wall of shell outwardly protrudes to form accommodating cavity；Reservoir chamber, reservoir chamber is connected to by through-hole with interior of shell, and weighing apparatus pressure wall and fixed part are provided in reservoir chamber, and weighing apparatus pressure wall one end is connect around through-hole and with the side wall of shell, the other end is connect with fixed part, and weighing apparatus pressure wall surface is provided with the weighing apparatus pressure hole of connection reservoir chamber and through-hole；Piston component, piston component includes block and piston, and the diameter of block is not less than the diameter of through-hole, and the side of block is connect by connector with fixed part, the other side is connect by connecting rod with piston, and piston passes through the spring being arranged in accommodating cavity and connect with accommodating cavity wall.Water hammer cancellation element of the invention can reduce water flow pressure from three directions simultaneously, and the aqueduct being particularly suitable under big flow operating condition farthest reduces punching press and damages to pipeline bring.
Description
Technical field
The present invention relates to the water hammer cancellation elements under a kind of water hammer cancellation element more particularly to high pressure operating condition.
Background technique
Water hammer refers to, suddenly by the valve rapid-closing of pipe line downstream, will form very when water flow flows in pipeline
Big punching press.Because the moment of inertia of water flow continues toward forward pass after water flow in flowing there is moment of inertia, valve to close
It passs, overpressure is caused rapidly to rise, so that pipeline is destroyed.If water hammer occurs in family housing, remove
Outside destruction pipeline slowly, very big noise can be also generated, very big puzzlement is brought to neighbours.Punching press size according to flow with
Depending on head fall, moment flow is bigger with head fall, and flow velocity is faster, and the moment of inertia of water flow is also bigger, to produce
Raw surprising immense pressure, this high pressure is there is a possibility that equipment is damaged, so usually having pressure release dress in engineer application
It is standby to lead overpressure off, lower shock wave bring sustained oscillation in managing.
In view of the above technical problems, it is necessary to which a kind of water hammer cancellation element is provided.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of water hammer cancellation elements, a part of high pressure liquid is discharged by reservoir chamber
Body, high pressure chest buffers highly pressurised liquid potential energy, and reduces the damage that water hammer brings pipeline again by the relief valve of water outlet pipe part.
To achieve the above object, the invention adopts the following technical scheme:
The present invention provides a kind of water hammer cancellation elements, comprising: shell, the shell be pipe-like, the one of the shell
End is equipped with water inlet, and the other end of the shell is equipped with water outlet, is provided with through-hole, the shell and institute on the side wall of outer shell
The opposite other side of through-hole is stated to outwardly protrude to form accommodating cavity；
Reservoir chamber, the reservoir chamber are arranged in the lateral wall of the shell, the reservoir chamber by the through-hole with it is described
Interior of shell connection, is provided with weighing apparatus pressure wall and fixed part in the reservoir chamber, weighing apparatus pressure wall one end surround the through-hole and with
The side wall of the shell connects, and the other end of the weighing apparatus pressure wall is connect with the fixed part, and the weighing apparatus pressure wall surface is provided with company
Lead to the weighing apparatus pressure hole of the reservoir chamber and the through-hole；
Piston component, the piston component are arranged in the interior of shell, and the piston component includes block and piston, institute
The diameter for stating block is not less than the diameter of the through-hole, the side of the block by pass through the connector of the through-hole with it is described
The other side of fixed part connection, the block is connect by connecting rod with the piston, and the piston is by being arranged in the accommodating
Intracavitary spring is connect with the accommodating cavity wall.When no fluid enters or fluid flow is smaller, the spring makes the gear
Block just blocks the through-hole.
Further, the shell is additionally provided with relief valve close to the side of the water outlet.When pipeline inner stream flow is excessive
When, the relief valve positioned at the water outlet side will be opened, and fluid can be flowed out from the water outlet, reduce fluid pressure
Power, to the damage of water hammer bring is reduced to minimum.
The water hammer cancellation element is mounted on valve downstream front end, using the above structure, when fluid passes through the water inlet
When flowing into the interior of shell, piston described in fluid impact makes the spring towards accommodating cavity internal compression, by pushing institute
Stating piston motion reduces the pressure of a part of fluid；Block described in piston driving is mobile so that the through-hole is opened simultaneously, and one
Divide high-pressure fluid to pass sequentially through the through-hole, the weighing apparatus pressure hole inflow reservoir chamber, reduces a part of fluid again with this
Pressure；When pipeline inner stream flow is excessive, the relief valve positioned at the water outlet side will be opened, and fluid can be from described
Water outlet outflow, further decreases Fluid pressure, to the damage of water hammer bring is reduced to minimum.
Further, the side wall of the reservoir chamber is equipped with liquid level sensor and valve, and the liquid level sensor passes through biography
Sensor support is connect with the side wall of the reservoir chamber.
Further, it is equipped with retaining ring between the piston and the accommodating cavity side wall, prevents fluid from entering the accommodating
It is intracavitary.
Further, the fixed part includes door and flange, the door and the flanged joint, the door and institute
The side for stating flanged joint is equipped with interconnecting piece, and the interconnecting piece passes through the perforation of the flange center, and the interconnecting piece is by wearing
The connector for crossing the through-hole is connect with the block.Preferably, the door and the flange by bolt and gasket and
Nut is assembled together.
Further, the interconnecting piece of the door is equipped with jack, and the connector is connecting rod, the connecting rod
It is inserted into the jack, the connecting rod is able to drive the block and does piston motion along the jack direction.
Further, the connector can also be elastic component, and the elastic component is connect with the interconnecting piece, the elastic component
It is able to drive the block and does piston motion along the through-hole direction.
Water hammer cancellation element of the invention, high-pressure fluid are depressured simultaneously by three methods: fluid impact piston makes bullet
Spring compression, then pushes piston motion to reduce a part of pressure；Simultaneously when block moves down so that through-hole is opened, a part
High-pressure fluid flows into reservoir chamber by weighing apparatus pressure hole, and reduces the pressure of a part of fluid；If last pipeline flow is excessive, that
Relief valve on water outlet will be opened, and fluid can be flowed out from water outlet, thus water hammer bring damage can be reduced to it is minimum.
The present invention can reduce water flow pressure from three directions simultaneously, and the aqueduct being particularly suitable under big flow operating condition can be most
Big degree punching press is reduced to damage to pipeline bring.
Detailed description of the invention
The present invention is described further with reference to the accompanying drawings and examples:
Fig. 1 is a kind of structural schematic diagram of water hammer cancellation element provided in an embodiment of the present invention.
Appended drawing reference:
1- water inlet；2- shell；3- through-hole；4- reservoir chamber；5- gasket；6- bolt；7- door；8- flange；9- liquid level passes
Sensor；10- sensor support base；11- weighing apparatus pressure hole；12- valve；13- relief valve；14- water outlet；15- spring；16- piston；17-
Retaining ring；18- connecting rod；19- block.
Specific embodiment
To be understood the present invention is further, with reference to the accompanying drawing and specific embodiment makees further the present invention
Illustrate, but the scope of protection of the present invention is not limited thereto.
As shown in Figure 1, the water hammer cancellation element of the present embodiment includes:
Shell 2, the shell 2 are pipe-like, and one end of the shell 2 is equipped with water inlet 1, the other end of the shell 2
Equipped with water outlet 14, through-hole 3 is provided on 2 side wall of shell, the shell 2 other side opposite with the through-hole 3 is outside
Protrusion forms accommodating cavity；
Reservoir chamber 4, the reservoir chamber 4 are arranged in the lateral wall of the shell 2, the reservoir chamber 4 by the through-hole 3 with
It is connected to inside the shell 2, weighing apparatus pressure wall and fixed part is provided in the reservoir chamber 4, described weighing apparatus pressure wall one end is around described logical
Hole 3 is simultaneously connect with the side wall of the shell 2, and the other end of the weighing apparatus pressure wall is connect with the fixed part, and the weighing apparatus presses wall surface
It is provided with the weighing apparatus pressure hole 11 for being connected to the reservoir chamber 4 and the through-hole 3；
Piston component, the piston component are arranged in the interior of shell, and the piston component includes block 19 and piston
16, the diameter of the block 19 is not less than the diameter of the through-hole 3, and the side of the block 19 is by passing through the through-hole 3
Connector is connect with the fixed part, and the other side of the block 19 is connect by connecting rod 18 with the piston 16, the piston
16 spring 15 by being arranged in the accommodating cavity is connect with the accommodating cavity wall.No fluid enters or fluid flow is smaller
When, the spring 15 makes the block 19 just block the through-hole 3.
The water hammer cancellation element is mounted on valve downstream front end, using the above structure, when fluid passes through the water inlet 1
When flowing into 2 inside of shell, piston 16 described in fluid impact makes the spring 15 towards accommodating cavity internal compression, by pushing away
Moving the movement of piston 16 reduces the pressure of a part of fluid；Piston 16 drives the block 19 mobile so that the through-hole simultaneously
3 open, and a part of high-pressure fluid passes sequentially through the through-hole 3, weighing apparatus pressure hole 11 flows into the reservoir chamber 4, are reduced again with this
The pressure of a part of fluid.
In some embodiments, the shell 2 is additionally provided with relief valve 13 close to the side of the water outlet 14.When in pipeline
When portion's flow is excessive, the relief valve 13 positioned at 14 side of water outlet will be opened, and fluid can be from the water outlet 14
Outflow, further decreases Fluid pressure, to the damage of water hammer bring is reduced to minimum.
In some embodiments, the side wall of the reservoir chamber 4 is equipped with liquid level sensor 9 and valve 12, and the liquid level passes
Sensor 9 is connect by sensor support base with the side wall of the reservoir chamber 4.
In some embodiments, between the piston 16 and the accommodating cavity side wall be equipped with retaining ring 17, prevent fluid into
Enter in the accommodating cavity.
In some embodiments, the fixed part includes door 7 and flange 8, and the door 7 is connect with the flange 8, institute
It states the side that door 7 is connect with the flange 8 and is equipped with interconnecting piece, the interconnecting piece passes through the perforation at 8 center of flange, described
Interconnecting piece is connect by passing through the connector of the through-hole 3 with the block 19.Preferably, the door 7 and the flange 8 are logical
It crosses bolt 6 and gasket 5 and nut is assembled together.
In some embodiments, the interconnecting piece of the door 7 is equipped with jack, and the connector is connecting rod, institute
It states connecting rod to be inserted into the jack, the connecting rod is able to drive the block 19 and does piston motion along the jack direction.
In possible embodiment, the connector can also be elastic component, and the elastic component is connect with the interconnecting piece, the elasticity
Part can drive the block 19 to do piston motion along 3 direction of through-hole.Certainly, other structures can also be used in the connector,
The block 19 can be made to move back and forth along 3 direction of through-hole.
In some embodiments, the reservoir chamber 4 and the weighing apparatus pressure wall surface are by being welded to connect the side wall in the shell 2
On.Preferably, the cross section of the shell 2 is rectangular or round.
In some embodiments, the connecting rod 18 is connect by welding with the block 19 and the piston 16.
In some embodiments, the spring 15 is connect by welding with the piston 16 and 2 inner wall of the shell.
Water hammer cancellation element of the invention can reduce water flow pressure from three directions simultaneously, be particularly suitable for big flow work
Aqueduct under condition can farthest reduce punching press and damage to pipeline bring.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of water hammer cancellation element characterized by comprising
Shell (2), one end of the shell (2) are equipped with water inlet, and the other end of the shell (2) is equipped with water outlet (14), institute
It states and is provided with through-hole (3) on shell (2) side wall, the shell (2) other side opposite with the through-hole (3) outwardly protrudes to be formed
Accommodating cavity；
Reservoir chamber (4), in the lateral wall of the shell (2), the reservoir chamber (4) passes through described logical for reservoir chamber (4) setting
It is connected to inside hole (3) and the shell (2), weighing apparatus pressure wall and fixed part is provided in the reservoir chamber (4), the weighing apparatus presses wall one end
It connecting around the through-hole (3) and with the side wall of the shell (2), the other end of the weighing apparatus pressure wall is connect with the fixed part,
The weighing apparatus pressure wall surface is provided with weighing apparatus pressure hole (11) for being connected to the reservoir chamber (4) and the through-hole (3)；
Piston component, the piston component setting is internal in the shell (2), and the piston component includes block (19) and piston
(16), the diameter of the block (19) is not less than the diameter of the through-hole (3), and the side of the block (19) is described by passing through
The connector of through-hole (3) is connect with the fixed part, and the other side of the block (19) passes through connecting rod (18) and the piston
(16) it connects, the piston (16) passes through the spring (15) being arranged in the accommodating cavity and connect with the accommodating cavity wall.
2. water hammer cancellation element according to claim 1, which is characterized in that the shell (2) is close to the water outlet
(14) side is equipped with relief valve (13).
3. water hammer cancellation element according to claim 1, which is characterized in that the side wall of the reservoir chamber (4) is equipped with liquid
Level sensor (9) and valve (12).
4. water hammer cancellation element according to claim 1, which is characterized in that the piston (16) and the accommodating cavity side wall
Between be equipped with retaining ring (17).
5. water hammer cancellation element according to claim 1, which is characterized in that the fixed part includes door (7) and flange
(8), the door (7) connect with the flange (8), and the side that the door (7) connect with the flange (8) is equipped with connection
Portion, the interconnecting piece pass through the perforation at the flange (8) center, and the interconnecting piece passes through the connector across the through-hole (3)
It is connect with the block (19).
6. water hammer cancellation element according to claim 5, which is characterized in that set on the interconnecting piece of the door (7)
There is jack, the connector is connecting rod, and the connecting rod is inserted into the jack, and the connecting rod is able to drive the block
(19) piston (16) are done along the jack direction to move.
7. water hammer cancellation element according to claim 5, which is characterized in that the connector is elastic component, the elasticity
Part is connect with the interconnecting piece, and the elastic component is able to drive the block (19) and does piston (16) along the through-hole (3) direction
Movement.
8. water hammer cancellation element according to claim 5, which is characterized in that the door (7) and the flange (8) pass through
Bolt and gasket (5) and nut are assembled together.
9. water hammer cancellation element according to claim 1, which is characterized in that the reservoir chamber (4) and weighing apparatus pressure wall are logical
Welded connecting is crossed on the side wall of the shell (2).
10. water hammer cancellation element according to claim 1, which is characterized in that the cross section of the shell (2) be it is rectangular or
It is round.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786322.6A CN110410609A (en) | 2019-08-24 | 2019-08-24 | A kind of water hammer cancellation element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910786322.6A CN110410609A (en) | 2019-08-24 | 2019-08-24 | A kind of water hammer cancellation element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110410609A true CN110410609A (en) | 2019-11-05 |
Family
ID=68368857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910786322.6A Pending CN110410609A (en) | 2019-08-24 | 2019-08-24 | A kind of water hammer cancellation element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382981A (en) * | 2022-01-05 | 2022-04-22 | 中国人民解放军海军工程大学 | Active and passive muffler device for liquid filling pipeline |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002023854A (en) * | 2000-07-07 | 2002-01-25 | Fujikura Rubber Ltd | Reducing valve for liquid |
| US20030019525A1 (en) * | 2001-07-24 | 2003-01-30 | Der-Fan Shen | Flow regulator for water pump |
| CN2665486Y (en) * | 2003-12-02 | 2004-12-22 | 荣成市高压泵阀厂 | An automatic pressure regulating valve |
| JP2010019394A (en) * | 2008-07-14 | 2010-01-28 | Inax Corp | Pressure accumulator |
| US20120152959A1 (en) * | 2010-12-16 | 2012-06-21 | Han-Chin Lai | Hydro-pneumatic pressure vessel |
| CN202768906U (en) * | 2012-09-19 | 2013-03-06 | 浙江工贸职业技术学院 | Water hammer eliminating combined valve |
| KR20140140452A (en) * | 2013-05-29 | 2014-12-09 | 이덕록 | Water hammer arrestor |
| CN204493974U (en) * | 2015-03-18 | 2015-07-22 | 上海威派格环保科技有限公司 | Without cutting down water soot blower device in pipeline in negative pressure pumping plant |
| CN105156755A (en) * | 2015-07-14 | 2015-12-16 | 福建金源泉科技发展有限公司 | Water hammer eliminating and pressure reducing device used for water purifier and using method of water hammer eliminating and pressure reducing device |
| CN209278503U (en) * | 2018-12-04 | 2019-08-20 | 福建省精利阀门制造有限公司 | Novel butterfly valve |
| CN210462122U (en) * | 2019-08-24 | 2020-05-05 | 江苏大学镇江流体工程装备技术研究院 | Water hammer eliminating device |
| CN213929952U (en) * | 2020-12-24 | 2021-08-10 | 杨建宇 | Water hammer eliminating equipment for long-distance water conveying pipeline |
-
2019
- 2019-08-24 CN CN201910786322.6A patent/CN110410609A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002023854A (en) * | 2000-07-07 | 2002-01-25 | Fujikura Rubber Ltd | Reducing valve for liquid |
| US20030019525A1 (en) * | 2001-07-24 | 2003-01-30 | Der-Fan Shen | Flow regulator for water pump |
| CN2665486Y (en) * | 2003-12-02 | 2004-12-22 | 荣成市高压泵阀厂 | An automatic pressure regulating valve |
| JP2010019394A (en) * | 2008-07-14 | 2010-01-28 | Inax Corp | Pressure accumulator |
| US20120152959A1 (en) * | 2010-12-16 | 2012-06-21 | Han-Chin Lai | Hydro-pneumatic pressure vessel |
| CN202768906U (en) * | 2012-09-19 | 2013-03-06 | 浙江工贸职业技术学院 | Water hammer eliminating combined valve |
| KR20140140452A (en) * | 2013-05-29 | 2014-12-09 | 이덕록 | Water hammer arrestor |
| CN204493974U (en) * | 2015-03-18 | 2015-07-22 | 上海威派格环保科技有限公司 | Without cutting down water soot blower device in pipeline in negative pressure pumping plant |
| CN105156755A (en) * | 2015-07-14 | 2015-12-16 | 福建金源泉科技发展有限公司 | Water hammer eliminating and pressure reducing device used for water purifier and using method of water hammer eliminating and pressure reducing device |
| CN209278503U (en) * | 2018-12-04 | 2019-08-20 | 福建省精利阀门制造有限公司 | Novel butterfly valve |
| CN210462122U (en) * | 2019-08-24 | 2020-05-05 | 江苏大学镇江流体工程装备技术研究院 | Water hammer eliminating device |
| CN213929952U (en) * | 2020-12-24 | 2021-08-10 | 杨建宇 | Water hammer eliminating equipment for long-distance water conveying pipeline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382981A (en) * | 2022-01-05 | 2022-04-22 | 中国人民解放军海军工程大学 | Active and passive muffler device for liquid filling pipeline |
| CN114382981B (en) * | 2022-01-05 | 2024-06-04 | 中国人民解放军海军工程大学 | Active and passive muffler device for liquid filling pipeline |
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