CN102864816A - Alternate-replacement gas-lift water supply unit - Google Patents
Alternate-replacement gas-lift water supply unit Download PDFInfo
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- CN102864816A CN102864816A CN2012103714678A CN201210371467A CN102864816A CN 102864816 A CN102864816 A CN 102864816A CN 2012103714678 A CN2012103714678 A CN 2012103714678A CN 201210371467 A CN201210371467 A CN 201210371467A CN 102864816 A CN102864816 A CN 102864816A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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Abstract
The invention discloses an alternate-replacement gas-lift water supply unit which comprises at least two gas pressure water tanks. An inflow check valve is serially disposed on a connecting pipe between a water source and each gas pressure water tank. An outflow check valve is serially disposed on a connecting pipe between each gas pressure water tank and a water outlet. An intake control valve is serially disposed on a connecting pipe between each gas pressure water tank and a gas storage cylinder. Each gas pressure water tank is communicated with the outside through an exhaust control valve. Part or all of the inflow check valves and the outflow check valves can be replaced by controllable valves. The defect that the existing gas-lift water supply unit is high in production cost and transport cost, difficult to move, and difficult to mount, requires large carriage passages reserved, occupies large area, is unable to continuously supply water for a long period of time is overcome. Limited use in places with small lift and replacement water capacity due to high cost is eliminated. The alternate-replacement gas-lift water supply unit full-automatically controlled is unattended and easy to produce.
Description
Technical field
The present invention relates to gaseous prepressing water supplying equipment and make the field, water supply facilities is pressed on the substitution gas that is specifically related to rotate top.
Background technology
See also shown in Figure 1, existing gaseous prepressing water supplying equipment is by the auto-pneumatic cylinder water storage, Compressed Gas fill gas pressure tank, displacing the tank inner storing water keeps certain pressure to pipe network water supply, the auto-pneumatic cylinder water storage is replaced complete, water supply process namely finishes, and needs again can again to supply water after the water filling in the auto-pneumatic cylinder.Auto-pneumatic cylinder bears the air pressure that equates with pressure of supply water and belongs to pressure container type, for satisfying the proof pressure demand, usually adopts steel plate or corrosion resistant plate to manufacture cylinder, two ends punching press dome end socket welded seal; Auto-pneumatic cylinder is born main water storage function, presses the replacing water volume requirements for satisfying the top, and the bodily form, weight are all comparatively huge.Example: it is 18m that the replacing water volume is pressed on the top
3, operating pressure is the gaseous prepressing water supplying equipment of 0.6MPa, supporting external diameter is the steel auto-pneumatic cylinder of 2 meters of φ: length of tank＞6 meter, tank body weight＞3.5 ton.There is the drawback that cost of production is high, cost of transportation is high, carrying is difficult, installation is difficult, the need reservation is larger transport passage for transporting, floor space are large, can not continue for a long time water supply in existing gaseous prepressing water supplying equipment, limit by above-mentioned drawback, existing gaseous prepressing water supplying equipment only is used for the top and presses the less occasion of replacing water volume.
Summary of the invention
The object of the invention is to solve the shortcoming of gaseous prepressing water supplying equipment described in the background technology, provide a kind of cost of production low, be convenient to transport, be convenient to install, push up press the replacing water volume to continue to supply water greatly, long-term, the substitution gas top of rotating that floor space is less presses water supply facilities.
For realizing above purpose, the present invention has taked following technical scheme: water supply facilities is pressed on the substitution gas of rotating top, comprise at least two auto-pneumatic cylinders, connecting pipe string between water source and each auto-pneumatic cylinder is put into Water Check Valve, and the connecting pipe string between each auto-pneumatic cylinder and delivery port takes on Water Check Valve; Connecting pipe string between each auto-pneumatic cylinder and gas bomb is put into gas control valve, and each auto-pneumatic cylinder is communicated with extraneous by gas exhausting valve; Water inlet flap valve and go out Water Check Valve and can partly or entirely adopt controllable valve to replace.
Water supply facilities is pressed on the substitution gas of rotating top, adopt pond or water tank etc. to need not to bear the container of pressure of supply water as main tank, owing to need not to bear pressure of supply water, the container such as pond or water tank can be cuboid, floor space is dwindled greatly than cylindrical auto-pneumatic cylinder, the pond can be built at the scene, but the water tank Assembling has solved that cost of transportation is high, carrying is difficult, difficult, as to need to reserve larger transport passage for transporting drawback is installed; Two or more auto-pneumatic cylinders are as less important tank, a plurality of auto-pneumatic cylinder water storage volume summations can be down to below 1/10th of total water storage volume, pond or water tank two or more small pneumatic water pots of arranging in pairs or groups replace large capacity auto-pneumatic cylinder, can significantly reduce production costs, removed the expensive restriction that only is used for the less occasion of top pressure replacing water volume that causes, certain or a plurality of auto-pneumatic cylinder that Compressed Gas is filled with wherein displace the tank inner storing water, keep certain pressure in the process of pipe network water supply, other needs the outlet valve of the auto-pneumatic cylinder of water storage to open, the water storage of the container such as pond or water tank enters other auto-pneumatic cylinder that needs water storage, before the water storage of the auto-pneumatic cylinder that supplies water does not replace, certain or a plurality of auto-pneumatic cylinder that Compressed Gas is filled with other displace the tank inner storing water and keep certain pressure to pipe network water supply, then the Compressed Gas that turn-offs previous certain that supplies water or whole auto-pneumatic cylinders is filled with, the outlet valve that is turned off the auto-pneumatic cylinder that Compressed Gas is filled with is opened, in the process that other auto-pneumatic cylinder supplies water, the water storage of the container such as pond or water tank enters, and finishes the preparation of water storage process and again drops into for water state.
Also be connected with respectively decompression release device and air compressor on the described gas bomb, an end of described decompression release device is connected between the air intake control valve.
Also include operating-controlling mechanism, described operating-controlling mechanism is connected with air intake control valve, gas exhausting valve, auto-pneumatic cylinder respectively, and it is used for the water level in the induction air pressure water pot, and the switching situation of control air intake control valve and gas exhausting valve.
Described operating-controlling mechanism comprises controls cabinet, and one termination power, the other end are drawn respectively control electric wire and signal wires, and described control electric wire is electrically connected with air intake control valve, gas exhausting valve respectively; Be respectively equipped with the water level controller that is electrically connected with signal wires at auto-pneumatic cylinder.
The course of work of the present invention is as follows: halted state, 1# gas exhausting valve and 2# gas exhausting valve are opened, the pond water storage flows to respectively 1# auto-pneumatic cylinder and 2# auto-pneumatic cylinder by water inlet pipe, 1# water inlet flap valve and 2# water inlet flap valve, gas is discharged by 1# gas exhausting valve and 2# gas exhausting valve, stack in the auto-pneumatic cylinder, the storage full water is finished the water storage process in the auto-pneumatic cylinder.
Enter for water state, controlling cabinet closes by control electric wire control 1# gas exhausting valve and 2# gas exhausting valve, control 1# air intake control valve is opened, stored-gas reduces to preset pressure by decompression release device in the gas bomb, the 1# air intake control valve of flowing through enters the 1# auto-pneumatic cylinder, 1# auto-pneumatic cylinder internal pressure raises, the water storage 1# that flows through goes out Water Check Valve, delivery port is to pipe network water supply, water level reduces gradually in the 1# auto-pneumatic cylinder, be low to moderate 1# water level controller action water level, the action of 1# water level controller, by signal wires the low water stage signal is reached and to control cabinet, controlling cabinet opens by control electric wire control 2# air intake control valve, stored-gas reduces to preset pressure by decompression release device in the gas bomb, the 2# air intake control valve of flowing through enters the 2# auto-pneumatic cylinder, 2# auto-pneumatic cylinder internal pressure raises, the water storage 2# that flows through goes out Water Check Valve, delivery port is to pipe network water supply, the 2# air intake control valve is opened and is finished, controlling cabinet closes by control electric wire control 1# air intake control valve, the 1# air intake control valve is closed and is finished, controlling cabinet opens by control electric wire control 1# gas exhausting valve, the pond water storage passes through water inlet pipe, 1# water inlet flap valve flows to the 1# auto-pneumatic cylinder, gas is by the 1# gas exhausting valve in the 1# auto-pneumatic cylinder, stack is discharged, again store up full water through scheduled time 1# auto-pneumatic cylinder, control cabinet and close by control electric wire control 1# gas exhausting valve.Water level reduces gradually in the 2# auto-pneumatic cylinder, be low to moderate 2# water level controller action water level, the action of 2# water level controller, by signal wires the low water stage signal is reached and to control cabinet, controlling cabinet opens by control electric wire control 1# air intake control valve, stored-gas reduces to preset pressure by decompression release device in the gas bomb, the 1# air intake control valve of flowing through enters the 1# auto-pneumatic cylinder, 1# auto-pneumatic cylinder internal pressure raises, the water storage 1# that flows through goes out Water Check Valve, delivery port is to pipe network water supply, the 1# air intake control valve is opened and is finished, controlling cabinet closes by control electric wire control 2# air intake control valve, the 2# control valve is closed and is finished, control cabinet and open by control electric wire control 2# gas exhausting valve, the pond water storage passes through water inlet pipe, 2# water inlet flap valve flows to the 2# auto-pneumatic cylinder, and gas is by the 2# gas exhausting valve in the 2# auto-pneumatic cylinder, stack is discharged, again store up full water through scheduled time 2# auto-pneumatic cylinder, control cabinet and close by control electric wire control 2# gas exhausting valve.Before the not compressed gas displacement of 1# auto-pneumatic cylinder water storage is complete, starting the 2# auto-pneumatic cylinder supplies water, the 2# auto-pneumatic cylinder enters and supplies water state fully, 1# auto-pneumatic cylinder water storage, exhaust before the not compressed gas displacement of 2# auto-pneumatic cylinder water storage is complete, starts the 1# auto-pneumatic cylinder and supply water, the 1# auto-pneumatic cylinder enters and supplies water state fully, 2# auto-pneumatic cylinder water storage, exhaust, 1# auto-pneumatic cylinder, the 2# auto-pneumatic cylinder displacement water storage of so rotating reaches the purpose of uninterrupted water supply.The external water source of filling pipe, water level in water pool reduces, and the moisturizing control valve is opened automatically to the pond moisturizing, and water level in water pool raises, and moisturizing control valve autoshutdown stops moisturizing.The gas bomb stored-gas reduces pressure decreased, and air compressor starts tonifying Qi automatically, and the gas bomb stored-gas increases pressure and raises, and air compressor stops tonifying Qi automatically.Water storage and Compressed Gas all can replenish automatically, have solved the drawback that existing gaseous prepressing water supplying equipment can not continue water supply for a long time.
The present invention compared with prior art has following advantage: the one, solved the drawback that existing gaseous prepressing water supplying equipment cost of production is high, cost of transportation is high, carrying is difficult, installation is difficult, the need reservation is larger transport passage for transporting, floor space are large, can not continue for a long time water supply.The 2nd, removed the expensive restriction that only is used for the less occasion of top pressure replacing water volume that causes.The 3rd, Automatic Control need not to control personnel, easily produces.
Description of drawings
Fig. 1 is prior art gaseous prepressing water supplying equipment system drawing;
Fig. 2 is the substitution gas top pressure water supply facilities system drawing of rotating;
Description of reference numerals: 1-pond, 2-1# gas exhausting valve, 3-1# air intake control valve, the 4-decompression release device, 5-1# auto-pneumatic cylinder, 6-water inlet pipe, the 7-1# water level controller, the 8-gas bomb, 9-1# goes out Water Check Valve, the 10-1# flap valve of intaking, the 11-2# flap valve of intaking, 12-2# goes out Water Check Valve, the 13-delivery port, 14-2# water level controller, 15-2# auto-pneumatic cylinder, the 16-air compressor, the 17-2# air intake control valve, 18-2# gas exhausting valve, 19-signal wires, 20-controls electric wire, 21-controls cabinet, 22-power supply, 23-stack, 24-moisturizing control valve, the 25-filling pipe.
The specific embodiment
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further details.
Embodiment:
See also shown in Figure 2, water supply facilities is pressed on the substitution gas of rotating top, comprise at least two auto-pneumatic cylinders (5,15), the connecting pipe string between water source and each auto-pneumatic cylinder (5,15) is put into Water Check Valve (10,11), the connecting pipe string that each auto-pneumatic cylinder (5,15) and delivery port are 13 takes on Water Check Valve (9,12); The connecting pipe string that each auto-pneumatic cylinder (5,15) and gas bomb are 8 is put into gas control valve (3,17), and each auto-pneumatic cylinder (5,15) is communicated with extraneous by gas exhausting valve (2,18); Water inlet flap valve (10,11) and go out Water Check Valve (9,12) and can partly or entirely adopt the replacement of controllable valve.
Further, supply with for making things convenient for gas, also be connected with respectively decompression release device 4 and air compressor 16 on the gas bomb 8, an end of decompression release device 4 is connected between the air intake control valve (3,17).
Further, automatically control for convenient, also include operating-controlling mechanism, operating-controlling mechanism respectively with air intake control valve (3,17), gas exhausting valve (2,18), auto-pneumatic cylinder (5,15) connects, it is used for induction air pressure water pot (5,15) water level in, and the switching situation of control air intake control valve (3,17) and gas exhausting valve (2,18).
Operating-controlling mechanism comprises controls cabinet 21, and one termination power 22, the other end are drawn respectively control electric wire 20 and signal wires 19, and control electric wire 20 is electrically connected with air intake control valve (3,17), gas exhausting valve (2,18) respectively; Be respectively equipped with the water level controller (7,14) that is electrically connected with signal wires 19 on auto-pneumatic cylinder (5,15), water level controller (7,14) is 1# water level controller 7 and 2# water level controller 14.
Be the convenient the present embodiment of describing, main tank can be made as pond 1, above-mentioned auto-pneumatic cylinder (5,15) be respectively 1# auto-pneumatic cylinder 5,2# auto-pneumatic cylinder 15, water inlet flap valve (10,11) is 1# water inlet flap valve 10 and 2# water inlet flap valve 11, go out Water Check Valve (9,12) go out Water Check Valve 9 for 1# and 2# goes out Water Check Valve 12, air intake control valve (3,17) is 1# air intake control valve 3 and 2# air intake control valve 17, gas exhausting valve (2,18) is 1# gas exhausting valve 2 and 2# gas exhausting valve 18.
Its concrete syndeton is: water supply facilities is pressed on the substitution gas of rotating top, and the water source is the main tank that need not to bear pressure of supply water, and at least two auto-pneumatic cylinders (5,15) are time tank; Main tank is connected with water inlet pipe 6, water inlet pipe 6 is told at least two branch roads, article one, is connected with 1# water inlet flap valve 10,1# auto- pneumatic cylinder 5,1# gas exhausting valve 2, stack 23 on the branch road in turn, is connected with 2# water inlet flap valve 11,2# auto-pneumatic cylinder 15,2# gas exhausting valve 18, stack 23 on the second branch road in turn; Pipeline one side at 1# water inlet flap valve 10,2# water inlet flap valve 11 places also is parallel with lateral, is connected with 1# on this lateral in turn and goes out Water Check Valve 9, delivery port 13,2# and go out Water Check Valve 12; Pipeline one side at 1# gas exhausting valve 2,2# gas exhausting valve 18 places also is parallel with lateral, be connected with 1# air intake control valve 3,2# air intake control valve 17 on this lateral in turn, between 1# air intake control valve 3,2# air intake control valve 17, also be connected with for gas being filled into the gas bomb 8 in order to displace water storage in 1# auto-pneumatic cylinder 5 or the 2# auto-pneumatic cylinder 15.
Below describe for the present embodiment course of work:
Halted state, 1# gas exhausting valve 2 and 2# gas exhausting valve 18 are opened, the pond water storage flows to respectively 1# auto-pneumatic cylinder 5 and 2# auto-pneumatic cylinder 15 by water inlet pipe 6,1# water inlet flap valve 10 and 2# water inlet flap valve 11, auto-pneumatic cylinder (5,15) interior gas is discharged by 1# gas exhausting valve 2 and 2# gas exhausting valve 18, stack 23 respectively, the storage full water is finished the water storage process in the auto-pneumatic cylinder (5,15).
Enter for water state, controlling cabinet 21 closes by control electric wire 20 control 1# gas exhausting valves 2 and 2# gas exhausting valve 18, control 1# air intake control valve 3 is opened, gas bomb 8 interior stored-gas reduce to preset pressure by decompression release device 4, the 1# air intake control valve 3 of flowing through enters 1# auto- pneumatic cylinder 5,1# auto-pneumatic cylinder 5 internal pressures raise, the water storage 1# that flows through goes out Water Check Valve 9, delivery port 13 is to pipe network water supply, 1# auto-pneumatic cylinder 5 interior water levels reduce gradually, be low to moderate 1# water level controller 7 action water levels, 7 actions of 1# water level controller, by signal wires 19 the low water stage signal is reached and to control cabinet 21, controlling cabinet 21 opens by control electric wire 20 control 2# air intake control valves 17, gas bomb 8 interior stored-gas reduce to preset pressure by decompression release device 4, the 2# air intake control valve 17 of flowing through enters 2# auto-pneumatic cylinder 15,2# auto-pneumatic cylinder 15 internal pressures raise, the water storage 2# that flows through goes out Water Check Valve 12, delivery port 13 is to pipe network water supply, 2# air intake control valve 17 is opened and is finished, controlling cabinet 21 closes by control electric wire 20 control 1# air intake control valves 3,1# air intake control valve 3 is closed and is finished, controlling cabinet 21 opens by control electric wire 20 control 1# gas exhausting valves 2, the pond water storage is by water inlet pipe 6,1# water inlet flap valve 10 flows to 1# auto- pneumatic cylinder 5,1# auto-pneumatic cylinder 5 interior gases are by 1# gas exhausting valve 2, stack 23 is discharged, again store up full water through scheduled time 1# auto-pneumatic cylinder 5, control cabinet 21 and close by control electric wire 20 control 1# gas exhausting valves 2.2# auto-pneumatic cylinder 15 interior water levels reduce gradually, be low to moderate 2# water level controller 14 action water levels, 14 actions of 2# water level controller, by signal wires 19 the low water stage signal is reached and to control cabinet 21, controlling cabinet 21 opens by control electric wire 21 control 1# air intake control valves 3, gas bomb 8 interior stored-gas reduce to preset pressure by decompression release device 4, the 1# air intake control valve 3 of flowing through enters 1# auto- pneumatic cylinder 5,1# auto-pneumatic cylinder 5 internal pressures raise, the water storage 1# that flows through goes out Water Check Valve 9, delivery port 13 is to pipe network water supply, 1# air intake control valve 3 is opened and is finished, controlling cabinet 21 closes by control electric wire 20 control 2# air intake control valves 17,2# air intake control valve 17 is closed and is finished, controlling cabinet 21 opens by control electric wire 20 control 2# gas exhausting valves 18, the pond water storage is by water inlet pipe 6,2# water inlet flap valve 11 flows to 2# auto-pneumatic cylinder 15,2# auto-pneumatic cylinder 15 interior gases are by 2# gas exhausting valve 18, stack 6 is discharged, again store up full water through scheduled time 2# auto-pneumatic cylinder 15, control cabinet 21 and close by control electric wire 20 control 2# gas exhausting valves 18.Before the not compressed gas displacement of 1# auto-pneumatic cylinder 5 water storages is complete, starting 2# auto-pneumatic cylinder 15 supplies water, 2# auto-pneumatic cylinder 15 enters and supplies water state fully, 1# auto-pneumatic cylinder 5 water storages, exhaust before the not compressed gas displacement of 2# auto-pneumatic cylinder 15 water storages is complete, starts 1# auto-pneumatic cylinder 5 and supply water, 1# auto-pneumatic cylinder 5 enters and supplies water state fully, 2# auto-pneumatic cylinder 15 water storages, exhaust, 1# auto-pneumatic cylinder 5, the 2# auto-pneumatic cylinder 15 displacement water storage of so rotating reaches the purpose of uninterrupted water supply.On pond 1, also be connected with filling pipe 25, the external water source of filling pipe 25 1 terminations, the other end is connected with moisturizing control valve 24 in being arranged on pond 1, pond 1 water level reduces, moisturizing control valve 24 is opened 1 moisturizing to the pond automatically, and pond 1 water level raises, and moisturizing control valve 24 autoshutdowns stop moisturizing.Gas bomb 8 stored-gas reduce pressure decreased, and air compressor 16 starts tonifying Qi automatically, and gas bomb 8 stored-gas increase pressure and raise, and air compressor 16 stops tonifying Qi automatically.Water storage and Compressed Gas all can replenish automatically, have solved the drawback that existing gaseous prepressing water supplying equipment can not continue water supply for a long time.
Above-listed detailed description is that this embodiment limits claim of the present invention for the specifying of possible embodiments of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (4)
1. water supply facilities is pressed on the substitution gas of rotating top, it is characterized in that: comprise at least two auto-pneumatic cylinders (5,15), water source and each auto-pneumatic cylinder (5,15) the connecting pipe string between is put into Water Check Valve (10,11), each auto-pneumatic cylinder (5,15) and the connecting pipe string between delivery port (13) take on Water Check Valve (9,12); Connecting pipe string between each auto-pneumatic cylinder (5,15) and gas bomb (8) is put into gas control valve (3,17), and each auto-pneumatic cylinder (5,15) is communicated with extraneous by gas exhausting valve (2,18); Water inlet flap valve (10,11) and go out Water Check Valve (9,12) and can partly or entirely adopt the replacement of controllable valve.
2. water supply facilities is pressed on the substitution gas top of rotating as claimed in claim 1, it is characterized in that: also be connected with respectively decompression release device (4) and air compressor (16) on the described gas bomb (8), one end of described decompression release device (4) is connected between the air intake control valve (3,17).
3. water supply facilities is pressed on the substitution gas top of rotating as claimed in claim 1, it is characterized in that: also include operating-controlling mechanism, described operating-controlling mechanism respectively with air intake control valve (3,17), gas exhausting valve (2,18), auto-pneumatic cylinder (5,15) connect, it is used for the water level in the induction air pressure water pot (5,15), and control air intake control valve (3,17) and the switching situation of gas exhausting valve (2,18).
4. water supply facilities is pressed on the substitution gas top of rotating as claimed in claim 3, it is characterized in that: described operating-controlling mechanism comprises controls cabinet (21), one termination power (22), the other end is drawn respectively control electric wire (20) and signal wires (19), described control electric wire (20) respectively with air intake control valve (3,17), gas exhausting valve (2,18) is electrically connected; On auto-pneumatic cylinder (5,15), be respectively equipped with the water level controller (7,14) that is electrically connected with signal wires (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103714678A CN102864816A (en) | 2012-09-28 | 2012-09-28 | Alternate-replacement gas-lift water supply unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103714678A CN102864816A (en) | 2012-09-28 | 2012-09-28 | Alternate-replacement gas-lift water supply unit |
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| CN102864816A true CN102864816A (en) | 2013-01-09 |
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| CN2012103714678A Pending CN102864816A (en) | 2012-09-28 | 2012-09-28 | Alternate-replacement gas-lift water supply unit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2084996U (en) * | 1990-11-17 | 1991-09-18 | 浙江衢州凿岩机厂 | Air-compressing continuous water injector |
| JP2850278B2 (en) * | 1993-12-24 | 1999-01-27 | 株式会社佐山製作所 | Water supply unit |
| CN2342024Y (en) * | 1998-08-13 | 1999-10-06 | 金福生 | Pneumatic contineous booster water supply device |
| CN201158836Y (en) * | 2007-08-17 | 2008-12-03 | 张新群 | Pressure-compensating water supply device without additional influence to common ductwork hydraulic pressure |
-
2012
- 2012-09-28 CN CN2012103714678A patent/CN102864816A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2084996U (en) * | 1990-11-17 | 1991-09-18 | 浙江衢州凿岩机厂 | Air-compressing continuous water injector |
| JP2850278B2 (en) * | 1993-12-24 | 1999-01-27 | 株式会社佐山製作所 | Water supply unit |
| CN2342024Y (en) * | 1998-08-13 | 1999-10-06 | 金福生 | Pneumatic contineous booster water supply device |
| CN201158836Y (en) * | 2007-08-17 | 2008-12-03 | 张新群 | Pressure-compensating water supply device without additional influence to common ductwork hydraulic pressure |
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Application publication date: 20130109 |