CN2578586Y - Assembled water hammer pump - Google Patents
Assembled water hammer pump Download PDFInfo
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- CN2578586Y CN2578586Y CN 02279747 CN02279747U CN2578586Y CN 2578586 Y CN2578586 Y CN 2578586Y CN 02279747 CN02279747 CN 02279747 CN 02279747 U CN02279747 U CN 02279747U CN 2578586 Y CN2578586 Y CN 2578586Y
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Abstract
The utility model relates to an assembly type water hammer pump, which belongs to the field of pumps and motors, and the utility model particular relates to a water hammer pump. The utility model is used for conveniently achieving the working mode switch of DC hydraulic pressure and AC hydraulic pressure; the utility model can be not only used as an AC hydraulic pressure water hammer pump but also can be used as a DC hydraulic pressure water hammer pump; the utility model can ensure effective accumulated energy of compressed air in an accumulated tank under the condition of long-time diumping running, and the utility model has reasonable lift head fall ratio and pump device efficiency. The utility model comprises a pulse generation assembly, a coupler assembly and an accumulator assembly, wherein, the coupler component comprises a liquid cylinder and a main connecting barrel arranged above the liquid cylinder thereof, wherein, a lower opening of the liquid cylinder is provided with a diaphragm pipece and butted with the pulse generation assembly; the neck part of the liquid cylinder is provided with a water-absorbing valve, the butting part between the liquid cylinder and the main connecting barrel is provided with a water pumping valve, and the side wall of the main connecting barrel is provided with a water pumping pipe. Outer interface components of each assembly of the utility model can achieve a dynamic sealing effect by a diaphragm, and the utility model can conveniently achieve the switch of the AC-hydraulic pressure working state and can guarantee that the accumulated energy of the compressed air in an air chamber of the accumulator can meet the operating requirements.
Description
Technical field
The utility model belongs to pump and motor, particularly hydraulic ram.
Background technique
Hydraulic ram is a kind of automatic water supply device that utilizes the hydraulic shock principle design to make.From the energy viewpoint, constitute by pulser unit, coupler device and accumulator apparatus three parts as the hydraulic ram of liquid (fluid) transmission device.Pulser unit is as a hydraulic energy update device, can regard the association of power engine and water pump as, adopt the hydraulic shock working principle to produce water hammer effect, purpose is to make the kinetic energy of working water in the water power pipe into to convert quite high pressure potential to, by Coupler and accumulator, hydraulic energy is transferred to the conveying ground of small flow high pressure head.Pulser unit can be described as water hammer generator, hydraulic shock wave-generator again, is the power input device of hydraulic ram.
This two part of coupler device and accumulator apparatus all belongs to hydraulic transmission, forms the output unit that pumps up water of hydraulic ram jointly.Coupler device can be divided into dc-couple device and ac-coupled device by the hydraulic work mode.The dc-couple device is pressed the work of direct current hydraulic principle, as blooming water valve.Ac-coupled device is by the work of AC hydraulic principle, as liquid---liquid converter.Hydraulic work mode by coupler device can be divided into hydraulic ram direct current hydraulic hydraulic ram and alternating flow hydraulic die mould hydraulic ram.
Accumulator apparatus is done pulse canceller, hydraulic accumulator, water-hammer arrester and output and is promoted the current purposes in hydraulic ram, issuable water hammer and minimizing promote the wave properties of current in hydraulic shock, storage and the transmission hydraulic energy of buffering and absorption hydraulic ram pulser unit, the elimination lifting pipe pipeline.
Whether no matter be direct current hydraulic hydraulic ram or alternating flow hydraulic die mould hydraulic ram, accumulator apparatus commonly used generally adopts the hydraulic type accumulator, contact by gas in the container and liquid to be divided into direct contact type (air water contact-type) and isolated two kinds of hydraulic accumulators.The direct contact type hydraulic accumulator is commonly used to the simple air jar, and isolated hydraulic accumulator is commonly used to bladder accumulator.
The novel hydraulic ram that magazine " new energy " 1997,19 (7), 17～19 " novel hydraulic ram design and research " literary composition is proposed is made up of drain valve 1, pump seat 2, pump chamber 3, water intake 4, delivery outlet 5, connection tube 6, blooming water valve 7, accumulator 8, lifting pipe 13, as shown in Figure 1, pulse oscillator is made up of pump seat 2, pump chamber 3, water intake 4, delivery outlet 5 and drain valve 1.The dc-couple device adopts blooming water valve 7, and accumulator 8 adopts the simple air jar.
Current enter pump seat 2 from 2--8 rice water source highly through water intake 4, open drain valve 1, and water can flow out.Along with the flow velocity of water is more and more faster, drain valve cuts out rapidly.At this moment, because closing suddenly of drain valve produces very strong hydraulic shock ripple in pump chamber 3, sub-fraction water just can enter in the cylindrical shell of accumulator 8 by blooming water valve 7 from delivery outlet 5, delivers to the eminence of 30-60 rice.After impacting for the first time, the vanishing in pump chamber 3 of the flow velocity of water, at this moment drain valve 1 is opened again automatically, and the water in the pump seat 2 begins to flow, and so just begins to impact for the second time and send water.Entire pump water motion circulation is always like this gone down.
With the accumulator apparatus of simple air jar as hydraulic ram, adopt a flange or welding connecting modes by connecting tube 6 between the cylindrical shell of accumulator 8 and the pump seat 2, arrange blooming water valve 7 in the bottom of the cylindrical shell of accumulator 8.Because the aperture position 9 of lifting pipe 13 on the cylindrical shell of accumulator 8 is positioned at the cylindrical shell intermediate portion of accumulator 8, the internal capacity that the original volume of hydroecium 12 equals the cylindrical shell of whole accumulator 8 deducts the volume of hydroecium 12.So even under the non-working state of pumping up water, the tank body of simple air jar (cylindrical shell of accumulator 8) volume also can not be utilized as air chamber 11 fully.According to the boyle theorem, under the effect of press water, air chamber 11 is compressed and further reduces, and the water line of hydroecium 12 further rises; The volume compression ratio of air chamber is the inverse of the ratio of pressure head and atmospheric pressure.
When hydraulic ram lift head is higher; air in the simple air jar top air chamber 11 is absorbed by the high pressure water of its lower end hydroecium 12 gradually; can not guarantee air chamber 11 compressed-air actuated energy storage capacities under the runnability of pumping up water for a long time; make the air chamber 11 of simple air jar finally inoperative; final result is that the hydraulic shock wave pressure peak value of hydraulic ram pulser unit constantly raises, and can cause simple air jar (cylindrical shell of accumulator 8) to break to lose efficacy or the hydraulic ram stopping accident.Therefore, after hydraulic ram moves a period of time, when hydroecium 12 water surface sites rise to restraining line 10, need shut down the hydraulic ram device and safeguard, carry out the emptying tonifying Qi to the simple air jar again, prevent that the cylindrical shell of accumulator 8 from becoming hydroecium 12 fully.
Adopt the negative pressure making-up air device also can avoid the generation of above-mentioned consequence to hydraulic ram pump chamber 3, but also need to adopt simultaneously venting gas appliance (exhaust tube, drip valve etc.) and gas sealer, gas unnecessary in the air tank is discharged, make again to remain an amount of gas in the air tank air chamber.Hydraulic ram is installed negative pressure tonifying Qi, exhaust and is ended compression gas regulation control gear such as gas.Can consume the hydraulic energy output of hydraulic ram pulser unit, cause the minimizing of effective water lift amount.Simultaneously, the most high-lift head of pump is only reaching between 20 to 40 times of drop head, and pump assembly efficiency descends gradually along with the increase of lift drop ratio.
Magazine " water conservancy and hydropower wall bulletin " the 17th volume the 13rd periodical July in 1996 has been stepped on " design method of novel hydraulic ram " literary composition, author Norman Carter, and bright red is translated, the Xiao Shiyi school.Introduced in the literary composition adopt the simple air jar its lift head of general type hydraulic ram only reaching 20 times of drop heads, and can cause the decline of pump assembly efficiency along with the increase of lift drop ratio.And the novel hydraulic ram device of band bladder accumulator (being to adopt the air sac type water-hammer arrester of plumbing pumping plant as accumulator apparatus), its lift head can surpass 40 times of drop heads, and efficient is between 75% to 80%; With the modified model hydraulic ram of automatic Aspirating valves and drip valve, the lift drop than performance bound between the two above-mentioned.
(adopt the negative pressure tonifying Qi from above-mentioned several frequently seen direct current hydraulic hydraulic ram-general type hydraulic ram (adopting the simple air jar), modified model hydraulic ram as accumulator 8, automatic Aspirating valves is installed and drip valve is installed at the pump chamber cavity of general type hydraulic ram device delivery outlet 5 at simple air jar (cylindrical shell of accumulator 8) lower semisection), the technical development of the novel hydraulic ram of band bladder accumulator sees, mainly with improve the lift drop than and pump assembly efficiency be starting point.
Magazine " irrigation and water conservancy and water power " 1988 the 8th phases 29 to 31 pages of " hydraulic ram " literary composition second half sections have been introduced the hydraulic ram that a kind of low water head water that utilizes sewage can submit the extraordinary type of clear water, and its structure as shown in Figure 2.
Be different from the hydraulic ram of common employing direct current hydraulic work mode, the hydraulic ram of this specific type can be classified it as alternating flow hydraulic die mould hydraulic ram by the liquid kind of drive.It structurally is integrated pulse generator, ac-coupled device, accumulator.
Pulse oscillator is made up of hydraulic ram pump seat 2, pump chamber 3 (being furnished with draining dash valve 1) and water intake 4, delivery outlet 5.
Ac-coupled device adopts piston-type hydro---liquid converter, its working principle is identical with reciprocating pump (this reciprocating pump belongs to the single action reciprocating pump), and its main body is made up of piston 14, spring 16, piston cylinder 15, suction valve 18, blooming water valve 7, fluid cylinder 19, liquid chamber 20, suction sleeve 17, lifting pipe 13.Accumulator adopts air tank, and the connection tube 6 of the cylindrical shell lower end by accumulator 8 is connected with fluid cylinder 19.Discharge by drain valve 1 from the sewage that water intake 4 flows into.At this moment because the outflow of sewage is closed draining dash valve 1, pump chamber 3 internal pressures rise, and promote piston 14; In case and drain valve 1 is opened, piston 14 sucks clear water because the elastic force of spring 16 presses down automatically, and piston 14 moves one on the other like this by suction valve 18, is sent by blooming water valve 7, clear water is transported to the hydroecium 12 of lifting pipe 13 and accumulator 8; The cylindrical shell of accumulator 8 forms the simple air jar, except that the hydraulic accumulator as pulse oscillator and reciprocating pump main body, also as the water-hammer arrester of lifting pipe 13 pipelines.
The alternating flow hydraulic die mould hydraulic ram that documents is enumerated is to transmit energy to liquid-liquid converter (piston 14 and reciprocating pump main body) by the fluctuation of working water (sewage is as working medium) in the water inlet power conduit or pulsation, can keep apart these two kinds of working mediums (working water) of the clear water of sewage that flows through pulse oscillator and reciprocating pump main body by the piston in liquid-liquid converter 14 (containing seal arrangement), can make working medium (sewage) sealing in the pulser unit of hydraulic ram under the drop head environment that works in sewage, not flow to the output unit that pumps up water (working medium is a clear water) of hydraulic ram.The reciprocating pump main body one on the other under the to-and-fro motion, is transported to clear water the hydroecium 12 of lifting pipe 13 and accumulator 8 at piston 14.The high frequency working environment requirement that draining dash valve 1 per minute of automatic valve (suction valve 18 and blooming water valve 7) incompatibility hydraulic ram pulser unit is 30 to 360 times.Fluid cylinder 19 between suction valve 18 and the blooming water valve 7 with piston 14 and piston 15 not point-blank, so compare with direct current hydraulic hydraulic ram, the output unit that pumps up water of alternating flow hydraulic die mould hydraulic ram is more complicated on structural configuration.If fluid cylinder 19 and piston 15 are taken off, because the pump chamber 3 of hydraulic ram pulser unit lacks blooming water valve 7, and the connection tube 6 of the cylindrical shell lower end of accumulator 8 lacks the lifting pipe opening, the cylindrical shell and the direct assembly unit mutually of hydraulic ram pulser unit of the feasible accumulator 8 that stays, main process equipment can not constitute direct current hydraulic hydraulic ram complete on the structure.So the hydraulic ram device can not directly be realized the working state switching of direct current hydraulic pressure and AC hydraulic.Piston 14 needs dynamic seal apparatus, and along with the increase of pumping head head, the leakage of piston 14 is also serious more, and the effective water lift amount that causes hydraulic ram to promote clear water reduces.
In a word, the development and use of middle low water head hydraulic power potentials comprise that the low water head of development and use sewage effluent and streams muddy water can submit clear water, need a kind of mixed doubles hydraulic transmission type hydraulic ram that adapts to direct current hydraulic pressure and two kinds of working methods of AC hydraulic; This hydraulic ram must have rational lift drop ratio and pump assembly efficiency.
Summary of the invention
A kind of groupware type hydraulic ram that the utility model proposes, purpose are that the working method that can conveniently realize direct current hydraulic pressure and AC hydraulic is switched, and both can make alternating flow hydraulic die mould hydraulic ram and use, and also can make direct current hydraulic hydraulic ram and use; Another purpose is to make groupware type hydraulic ram of the present utility model, adopt air tank or adopt bladder accumulator no matter be as energy storage apparatus, can both guarantee the compressed-air actuated effective energy storage capacity of air chamber in the accumulator tank body under the motion conditions of pumping up water for a long time, hydraulic ram has rational lift drop ratio and pump assembly efficiency simultaneously.
A kind of groupware type hydraulic ram of the present utility model comprises the pulsing assembly, coupler component and accumulator assembly, and the pump seat inner cavity of pulsing assembly constitutes pump chamber, and the one end is a water intake, and the other end is equipped with drain valve, and the pump chamber Vertical direction is a delivery outlet; Pulsing assembly top is the accumulator assembly, and the coupler component that comprises blooming water valve is arranged between them, it is characterized in that:
Described coupler component also comprises the main coupling tunnel that fluid cylinder and top counterpart thereof connect, the fluid cylinder lower opening is equipped with diaphragm member and docks with pulsing assembly delivery outlet, the fluid cylinder neck is equipped with suction valve, and fluid cylinder and main coupling tunnel joint are equipped with blooming water valve, and main coupling tunnel sidewall is equipped with lifting pipe.
Described groupware type hydraulic ram, main coupling tunnel or accumulator cylindrical shell can be provided with gas charging valve.
Described groupware type hydraulic ram is further characterized in that between pulsing assembly, coupler component and the accumulator assembly and adopts flange to connect or be threaded; Described suction valve and blooming water valve adopt the diaphragm type safety check; The barrier film below or the rear of described diaphragm member, suction valve and blooming water valve are lined with web plate, and it is the structure rigidity flat body or the curved surface of eye with holes.
Described groupware type hydraulic ram, described accumulator assembly can adopt bladder accumulator, and its lower end and main coupling tunnel joint are lined with web plate, and it is the structural rigidity flat body or the curved surface of eye with holes.
Groupware type hydraulic ram of the present utility model adopts diaphragm type liquid---liquid converter (working principle is identical with diaphragm pump).This installs each assembly external interface parts and all can rely on the sealability of barrier film itself to reach or strengthen the motive sealing effect, does not have other motive sealing parts, does not also have the mechanical parts of motion.Owing to diaphragm member has in light weight, advantages such as inertia is little, anti-water hammer performance is good, manufacturing is simple, cost is low, noise is little when working, the self seal performance is good, nothing leakage, diaphragm type liquid---liquid converter and accumulator are as the output unit that pumps up water of AC hydraulic working method so adopt, can adapt to the high frequency job requirement of the draining dash valve 1 of pulser unit, and reduce amount of leakage.
In the AC hydraulic working state, fluid cylinder 19, suction valve 18 are taken off with diaphragm member 22, lifting pipe 13, accumulator 8, the main web plate 21 that connects tube 27, blooming water valve 7 directly are connected with the output port 5 that can flow of barrier film 23 with the pulser unit of hydraulic ram, just can change direct current hydraulic work mode over to.
. the utility model groupware type hydraulic ram, adopt air water contact-type air tank or bladder accumulator as accumulator apparatus no matter be, the tank body of accumulator apparatus has only lower ending opening and is transferred the water body sealing, is the seal-off pressure container of splendid attire pressurized gas and pressured fluid.The air chamber original volume that accumulator has is suitable with this body bulk of accumulator tank body.Hydraulic ram pumps up water under the running working state for a long time, by adopting supplementary energy to the regular tonifying Qi of air chamber, pressurized gas is regulated on the certain proportion of this body bulk that is controlled at the accumulator tank body, and the energy storage capacity that assurance air chamber pressurized gas has can satisfy the operation needs of hydraulic ram.So the utility model groupware type hydraulic ram is the same with the existing hydraulic ram that documents is enumerated, have similar lift drop ratio and pump assembly efficiency.
Description of drawings:
Fig. 1 is existing direct current hydraulic hydraulic ram schematic representation;
Fig. 2 is a kind of alternating flow hydraulic die mould hydraulic ram schematic representation;
Fig. 3 is the utility model groupware type hydraulic ram schematic representation, and accumulator adopts air water contact-type air tank;
Fig. 4 is another mode of execution of the present utility model, adopts bladder accumulator.
Embodiment:
Below in conjunction with accompanying drawing 3, the present invention is described in further detail for accompanying drawing 4.
The pulsing assembly is made up of hydraulic ram pump seat 2, pump chamber 3, drain valve 1 and water intake 4, delivery outlet 5.Coupler component adopts diaphragm type liquid---liquid converter, is made up of web plate 21, diaphragm member 22, barrier film 23, fluid cylinder 19, liquid chamber 20, main tube 27, suction sleeve 17, lifting pipe 13, blooming water valve 7 and the suction valve 18 of connecting.
Accumulator adopts air tank (as the accumulator 8 of accompanying drawing 3) or bladder accumulator (as the accumulator 8 of accompanying drawing 4).
Coupler component and accumulator assembly form the output unit that pumps up water of alternating flow hydraulic die mould hydraulic ram jointly.
In the AC hydraulic working state, coupler component adopts diaphragm member 22 in the motive sealing of delivery outlet 5 positions, is transmitted the hydraulic energy of the hydraulic shock ripple of hydraulic ram pulsing assembly generation by diaphragm member 22; Suction valve 18 all adopts the diaphragm type safety check with blooming water valve 7, and blooming water valve 7 and suction valve 18 are formed by web plate 21 and barrier film 23, form board-like connection valve, are fixed on the connecting plate of pipeline and container.
The air bag 29 of diaphragm member 22, diaphragm type safety check (suction valve 18 and blooming water valve 7), bladder accumulator 8 all can rely on the sealability of film itself to reach or strengthen the motive sealing effect, does not have other motive sealing parts, does not also have the mechanical parts of motion.
The opening of the barrier film 29 of barrier film 22, diaphragm type safety check (suction valve 18 and blooming water valve 7), bladder accumulator 8 all adopts web plate 21 protections; Web plate 21 be positioned at barrier film under, be used to prevent that barrier film from being scratched by mouth of pipe damage under back-pressure; Web plate 21 is structural strength solid or curved surfacies of the structural rigidity eye dull and stereotyped or with holes of eye with holes, and the corner of web plate 21 or exposed surface are streamlined, can not damage or scratch diaphragm member; The physical dimension of barrier film is corresponding with web plate 21; The barrier film 29 of diaphragm member 22 and bladder accumulator 8 adopts half film or the full membranous type formula in the pneumatic installation water supply, can produce the elastic dilatation distortion under the hydraulic shock ripple effect that the hydraulic ram pulse generating unit produces, and produces the swept volume of diaphragm pump in fluid cylinder 19; In case and the drain valve 1 of hydraulic ram pulse generating unit is opened, diaphragm member 22 contraction because the elastic force of self is pulled back automatically; Diaphragm member 22 produces flexiblely expansion and contractile motion, sucks clear water by suction valve 18 and enters liquid chamber 20, is sent by blooming water valve 7, clear water is delivered to the hydroecium 12 of lifting pipe 13 and accumulator 8; The hydraulic energy characteristic of the physical dimension of fluid cylinder 19 and hydraulic ram pulser unit adapts.
The coupler component of hydraulic ram is connected by the main tube 27 that connects with accumulator 8, and lifting pipe 13 is arranged on the sidewall of main connection tube 27; Main connect between tube 27 and the fluid cylinder 19, be threaded by flange.Like this, the adapter mouth of pipe of suction sleeve 18, overcurrent runner (main tube 27 and the fluid cylinder 19 of connecting) and lifting pipe 13 all be positioned at accumulator 8 connecting cylinder 6 under, thereby make this body bulk of original volume that the air chamber 11 of accumulator 8 has and accumulator tank body suitable.
The accumulator of hydraulic ram device can adopt air water contact-type air tank or bladder accumulator.
For the compression gas regulation control gear such as making-up air device that make mixed solution die mould hydraulic ram do not consume hydraulic energy, do not reduce effective water lift amount, and guarantee that under the runnability of pumping up water for a long time the air chamber pressurized air in the accumulator tank body has effective energy storage capacity, even the phenomenon that makes the hydroecium of accumulator exist air to be absorbed by press water, therefore the air chamber of accumulator can not lose the air chamber gas volume yet and become hydroecium fully, air chamber pressurized air and effective energy storage capacity thereof can in time and arrive and recover, and can adopt supplementary energy that the accumulator air chamber is carried out regular tonifying Qi.
Adopt air water contact-type air tank as accumulator, energy storage capacity for the pressurized gas in the regular replenishment air chamber 11, to air chamber 11 tonifying Qi, therefore cylindrical shell or the master at accumulator 8 connects tube 27 design and installation gas charging valves 26 to need to adopt supplementary energy (as air compressor, manual inflator, pressure cylinder etc.).
Adopt bladder accumulator as accumulator, make air bag 29 form the auxiliary energy-storage devices at main connection tube 27 design and installation gas charging valves 26 and liquid-filling valve 25.The air bag of air water separatrix more than 24 forms air chamber 11, to increase the actual volume of pressurized gas, so that increase standby energy storage capacity, so also can reduce the container of the output unit that pumps up water of hydraulic ram and the variation in pressure of pipe-line system effectively.
Under alternating flow hydraulic die mould hydraulic ram state, fluid cylinder 19, suction valve 18 and diaphragm member 22 are taken off, allow hydraulic ram pulsing assembly directly connect tube 27, accumulator 8, lifting pipe 13 assembly unit mutually with web plate 21 and barrier film 23, the master of blooming water valve 7, main process equipment just can intactly constitute direct current hydraulic hydraulic ram, and realizes the work of normally pumping up water.Oppositely assembly unit just can be returned to the AC hydraulic working method, uses as alternating flow hydraulic die mould hydraulic ram.
Claims (5)
1. a groupware type hydraulic ram comprises the pulsing assembly, coupler component and accumulator assembly, and the pump seat inner cavity of pulsing assembly constitutes pump chamber, and the one end is a water intake, and the other end is equipped with drain valve, and the pump chamber Vertical direction is a delivery outlet; Pulsing assembly top is the accumulator assembly, and the coupler component that comprises blooming water valve is arranged between them, it is characterized in that:
Described coupler component also comprises the main coupling tunnel that fluid cylinder and top counterpart thereof connect, the fluid cylinder lower opening is equipped with diaphragm member and docks with pulsing assembly delivery outlet, the fluid cylinder neck is equipped with suction valve, and fluid cylinder and main coupling tunnel joint are equipped with blooming water valve, and main coupling tunnel sidewall is equipped with lifting pipe.
2. groupware type hydraulic ram as claimed in claim 1 is characterized in that main coupling tunnel or accumulator cylindrical shell are provided with gas charging valve.
3. groupware type hydraulic ram as claimed in claim 1 or 2 is characterized in that adopting the flange connection between pulsing assembly, coupler component and the accumulator assembly or being threaded; Described suction valve and blooming water valve adopt the diaphragm type safety check; The barrier film below or the rear of described diaphragm member, suction valve and blooming water valve are lined with web plate, and it is the structure rigidity flat body or the curved surface of eye with holes.
4. groupware type hydraulic ram as claimed in claim 1 or 2 is characterized in that the accumulator assembly adopts bladder accumulator, and its lower end and main coupling tunnel joint are lined with web plate, and it is the structural rigidity flat body or the curved surface of eye with holes.
5. groupware type hydraulic ram as claimed in claim 3 is characterized in that the accumulator assembly adopts bladder accumulator, and its lower end and main coupling tunnel joint are lined with web plate, and it is the structural rigidity flat body or the curved surface of eye with holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279747 CN2578586Y (en) | 2002-10-28 | 2002-10-28 | Assembled water hammer pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279747 CN2578586Y (en) | 2002-10-28 | 2002-10-28 | Assembled water hammer pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578586Y true CN2578586Y (en) | 2003-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279747 Expired - Fee Related CN2578586Y (en) | 2002-10-28 | 2002-10-28 | Assembled water hammer pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578586Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819121A (en) * | 2015-04-24 | 2015-08-05 | 西藏华之源生态科技有限公司 | Energy-saving environment-friendly water drawing device |
| CN105179329A (en) * | 2015-08-07 | 2015-12-23 | 柳超 | Efficient hydraulic ram |
| CN107725960A (en) * | 2017-11-15 | 2018-02-23 | 中北大学 | A kind of valve module for preventing water hammer for colliery |
| CN113107574A (en) * | 2021-04-27 | 2021-07-13 | 太原理工大学 | Unpowered pulse water hammer pump generating device |
-
2002
- 2002-10-28 CN CN 02279747 patent/CN2578586Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819121A (en) * | 2015-04-24 | 2015-08-05 | 西藏华之源生态科技有限公司 | Energy-saving environment-friendly water drawing device |
| CN105179329A (en) * | 2015-08-07 | 2015-12-23 | 柳超 | Efficient hydraulic ram |
| CN107725960A (en) * | 2017-11-15 | 2018-02-23 | 中北大学 | A kind of valve module for preventing water hammer for colliery |
| CN107725960B (en) * | 2017-11-15 | 2024-03-15 | 中北大学 | Valve assembly for preventing water hammer in coal mine |
| CN113107574A (en) * | 2021-04-27 | 2021-07-13 | 太原理工大学 | Unpowered pulse water hammer pump generating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Chengjian Document name: payment instructions |
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| DD01 | Delivery of document by public notice |
Addressee: Runze Hydraulic Technology Co., Ltd., Wuhan City Zhang Chengjian Document name: Notification of Termination of Patent Right |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031008 Termination date: 20101028 |