CN2503120Y - Flow balance device of hydropress - Google Patents
Flow balance device of hydropress Download PDFInfo
- Publication number
- CN2503120Y CN2503120Y CN 01260319 CN01260319U CN2503120Y CN 2503120 Y CN2503120 Y CN 2503120Y CN 01260319 CN01260319 CN 01260319 CN 01260319 U CN01260319 U CN 01260319U CN 2503120 Y CN2503120 Y CN 2503120Y
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- hydraulic press
- accommodating chamber
- pressure
- water
- flexible sheet
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Abstract
A flow equilibrium device for water press is provided, which comprises a containing chamber arranged on a water intake channel of the water press, a guiding pipe used for guiding the pressure at outlet of the water press into the containing chamber, a control component comprising an elastic membrane positioned on bottom end of the containing chamber and capable of extending towards to the direction of the flow channel pushed by the water pressure, a guiding rod with one end connected to the bottom end of the elastic membrane and another end extended to the top end of the containing chamber, a spring capable of pushing the baffle and driving the guiding rod and the elastic membrane to deform elastically in different degrees to make the area of the cross section of the water intake channel vary, so as to change the water intake volume of the water press to match the water consumption of the water supply pipelines.
Description
Technical field
The utility model relates to hydraulic press, is meant the hydraulic press flow equilibrium device of a kind of use at pressure-difference hydraulic machine especially.
Background technology
The at present general building and the water system of other public places be in order to keep the stable water pressure of supply channel, and make and all can keep suitable hydraulic pressure everywhere in the building, therefore can be provided with in order to stablize the hydraulic press of hydraulic pressure on supply channel usually.And, mainly can be divided into mechanical pressure-difference hydraulic machine, and use the frequency conversion type constant pressure type hydraulic press of inverter motor control according to its structure in order to the control system of control voltage stabilizing with hydraulic press.
Wherein frequency conversion type constant pressure type hydraulic press uses the frequency conversion type motor that can change rotating speed to drive force (forcing) pump, the rotating speed of a Frequency Converter Control motor of collocation.Frequency converter can be subjected to the control of pressure sensor and change the rotating speed of this inverter motor.Its function mode, be pressure by hydraulic pressure sensing device senses supply channel, when loine pressure is low, controllable motor turns round with high rotational speed, and work as hydraulic pressure near prescribing a time limit on the hydraulic pressure of supply channel, just reduce the rotating speed of motor, and on the hydraulic pressure overpressure, prescribe a time limit, just control motor and shut down.Therefore when the water supply volume of supply channel was big, the pressure of pipeline declined by a big margin, and frequency converter just can be controlled motor and turned round with high rotational speed this moment, and the water yield of pump can be promoted, so that the rising of the pressure of supply channel; And when the water supply volume of supply channel hour, then the pressure fall of supply channel is less, and this moment, frequency converter just can be controlled motor with lower rotation speed operation, therefore made the water yield of pump reduce, and the pressure of supply channel can fast rise.
The advantage of frequency conversion type constant voltage hydraulic press is can be by the rotating speed of Frequency Converter Control compression motor, make the water yield of pump to cooperate with the water supply volume of supply channel, therefore can accurately control the rotating speed of motor, and after avoiding motor starting, supply channel pressure fast rise, and the situation that stops at once after making motor start rapidly therefore can be so that the hydraulic press motor turn round smooth-goingly, and make the running efficiency of motor promote, and save the energy.
Yet frequency conversion type constant voltage hydraulic press must adopt the frequency conversion type motor of complex structure, and the cost of frequency-variable controller is quite expensive, therefore make that the price of this kind frequency conversion type hydraulic press is quite high, and the cost of maintenance is also quite high.And frequency converter can produce high heat when using, so the control cabinet of hydraulic press must be provided with suitable cooling system, and uses often regular meeting because overheated and make frequency converter burn.Owing to above reason, the cost costliness of the frequency conversion type constant voltage hydraulic press of prior art, and maintenance is difficult, so the frequency conversion type hydraulic press only can use usually in large-scale water system use.
Another kind of mechanical type pressure-difference hydraulic machine then is to use the start and stop of a pressure-sensing switch control motor, this motor uses the motor of fixed rotating speed, and this pressure-sensing switch can be set a upper pressure limit and a low pressure limit, when the hydraulic pressure of supply channel was lower than low pressure limit, just starter drove the pump pressurization; And when loine pressure is higher than upper pressure limit, just control motor to shut down, after the pressure of supply channel makes with water consumption that because of pipeline hydraulic pressure is reduced to low pressure limit, just restart the motor pressurization again again.In addition; in order to postpone the speed of supply channel pressure rise and fall; this supply channel can be provided with a storage pressure cylinder in the outlet of hydraulic press usually; but this storage pressure cylinder inside splendid attire air or flexible sheet, it can store hydraulic pressure, when hydraulic press starts pressurization; current enter in the storage pressure cylinder; and after hydraulic press shuts down, then can current be injected in the supply channel by the air pressure of storage pressure cylinder or the pressure of diaphragm, to replenish the speed that supply channel pressure descends.
The mechanical pressure-difference hydraulic machine of this kind is because the motor structure of its use and control system are comparatively simple and cost is comparatively cheap, and its operating maintenance work is also more or less freely, yet the motor of its use turns round with fixed rotating speed, therefore after pressure switch is controlled the motor starting of this hydraulic press, the pump of hydraulic press just is merely able to supply water with the water yield of maximum, no matter therefore the water supply volume of supply channel how, the discharge of pump of hydraulic press is all kept fixing flow.
And hydraulic press can meet supply channel at water use peak flow constantly in order to want, so the water outlet energy of the pump of its use must meet the flow of peak with aqueous condition, and enough water flows can be provided.Yet, when supply channel in the water ebb during period, though the water supply volume of supply channel reduces, but the hydraulic press motor still is merely able to turn round at full speed, therefore make the water yield of pump far above the water demand amount of supply channel, therefore after hydraulic press starts, the pressure of the supply channel upper pressure limit that the overpressure switch sets that just can rise in short time, therefore make behind the hydraulic press motor starting, just can stop at once at short notice, therefore make the start and stop action of motor become quite frequent.
And motor is in the running, and the moment of power consumption is to start in a flash, thus motor continually start and stop just can cause quite serious power consumption.And under supply channel low water usage state, the motor of hydraulic press is running at full speed still, therefore makes the hydraulic press motor still keep the high power consumption state of high water usage state, has therefore caused no small energy consumption.And more seriously under the low water usage state, the water flow of hydraulic press pump is far above the water supply volume of supply channel, therefore make the export pipeline of hydraulic press pump can cause serious pressure back-pressure, therefore make the operating load of hydraulic press pump more increase the weight of, therefore the situation that makes the hydraulic press motor power consume is even more serious.
Summary of the invention
The inventor sets about design research at the disadvantages of above-mentioned prior art, designs the technical solution of the utility model eventually.
Main purpose of the present utility model is to provide a kind of and can avoids hydraulic press start and stop rapidly, the hydraulic press flow equilibrium device of the situation that wastes energy.
Another purpose of the present utility model, be to provide a kind of can be so that cooperating with water state of the water yield of hydraulic press and supply channel to avoid the hydraulic press water yield greater than water supply volume, causes the hydraulic press flow equilibrium device of energy consumption.
Another purpose of the present utility model is to provide a kind of mechanical type pressure-difference hydraulic machine of can arranging in pairs or groups to use, and makes the mechanical type pressure-difference hydraulic machine can bring into play and the hydraulic press flow equilibrium device of frequency conversion type hydraulic press near effect.
The purpose of this utility model is achieved in that a kind of hydraulic press flow equilibrium device, comprising:
One accommodating chamber can be arranged on the intake tunnel of a hydraulic press; And
One guide wire is connected between the delivery port and this accommodating chamber of aforementioned hydraulic press pump, in order to the guiding of the outlet pressure of this hydraulic press is entered among this accommodating chamber; And
One control member is arranged among this accommodating chamber, controlled by this hydraulic press outlet pressure, and it is long-pending to change the open cross-sections of this hydraulic press intake tunnel;
It is characterized in that: this control member comprises:
One flexible sheet is arranged between this accommodating chamber and this intake tunnel, and promoted by this hydraulic press outlet pressure, towards the elastic deformation of this water stream channel direction extension; And
One guide bar, an end is connected in the bottom of this flexible sheet, and the other end extends to this accommodating chamber top; And
One baffle plate is arranged on this guide bar top; And
One spring is arranged between this baffle plate bottom and this accommodating chamber bottom, can promote this baffle plate, drives this guide bar and flexible sheet and moves up;
By above elements combination, the outlet pressure of this hydraulic press can enter this accommodating chamber, and promotes this flexible sheet generation elastic deformation in various degree, and makes the sectional area of this intake tunnel change, therefore make the inflow of this hydraulic press change, to cooperate the water supply volume of supply channel.
Description of drawings
Fig. 1 is the combination section of the flow equilibrium device of the utility model first embodiment;
Fig. 2 is the bottom view of the arc of the utility model use;
Fig. 3 one is provided with the organigram of the pressure-difference hydraulic machine of flow equilibrium device of the present utility model;
Fig. 4 is the action schematic diagram of the flow equilibrium device of the utility model first embodiment;
Fig. 5 is the combination section of the flow equilibrium device of the utility model second embodiment;
Fig. 6 is the local amplification profile of Fig. 5;
Fig. 7 is the action schematic diagram of the utility model second embodiment.The figure number explanation:
1 hydraulic press, 2 inlet pipelines
3 export pipelines, 4 flap valve
5 storage pressure cylinders, 6 pressure switches
10 bodies, 11 accommodating chambers
12 water stream channels, 13 flange sockets
14 hydraulic pressure, 15 conduits that enter the mouth
16 holders, 17 recess
20 control members, 21 flexible sheets
22 flanges, 23 retainer rings
231 guide holes, 232 pressure guide holes
24 flanges, 25 guide bars
Nut is adjusted in 25 threaded portions 252
26 arcs, 26 pressure rings
262 grooves
27 baffle plates, 28 springs
30 pumps, 31 bodies
32 intake chambers, 33 water-supplying chamber
34 vane chambers, 35 intake tunnels
36 accommodating chambers, 37 holders
38 guide holes, 39 baffle plates
40 control members, 41 flexible sheets
42 retainer rings, 43 arcs
44 guide bars, 45 baffle plates
46 springs 47 are adjusted screw
The specific embodiment
As Fig. 1 and shown in Figure 3, the flow apparatus of the utility model first embodiment wherein mainly comprises: a body 10, can be installed on the inlet pipeline 2 of a hydraulic press 1, as shown in Figure 1, this body 10 is cylindric, and its inner epimere has an accommodating chamber 11 cylindraceous, and the top of this accommodating chamber 11 is provided with hydraulic pressure inlet 14, this hydraulic pressure inlet 14 is connected with the export pipeline 3 of hydraulic press 1 by a conduit 15, enters among this accommodating chamber 11 in order to the outlet pressure of hydraulic press is guided; This body Lower Half has a water stream channel 12, and two ends of this water stream channel 12 have a flange socket 13 respectively, in order to be connected with the inlet pipeline 2 of hydraulic press.An and control member 20, device is in the inside of this body 10, and its function is promoted by the pressure of the export pipeline of hydraulic press, and changes the degree of opening of this water stream channel 12, so that change, with the operating state of hydrous water press 1 by the water flow of this water stream channel 12.
As shown in Figure 3, aforementioned hydraulic press 1 is provided with a flap valve 4 in its inlet pipeline 2, in order to prevent that flow reversal from refluxing, and its export pipeline 3 is provided with a storage pressure cylinder 5, in order to store hydraulic pressure, and a pressure switch 6, can set upper limit pressure and pressure limiting power once, to control the start and stop of this hydraulic press 1.When the hydraulic pressure of export pipeline 3 was lower than this threshold pression, this pressure switch 6 can be controlled hydraulic press 1 and start, and when pressure is higher than upper pressure limit, can controls this hydraulic press 1 and shut down.
As shown in Figure 1, the feature that the utility model is main, be the aforementioned control member 20 main devices of controlling these water stream channels 12 by flexible sheet 21 conducts of an elastically deformable, comprise among this control member 20: a flexible sheet 21, be set in place the position between this accommodating chamber 11 bottoms and water stream channel 12, and this accommodating chamber 11 is separated with water stream channel 12; This flexible sheet 21 be shaped as a U-shaped sleeve shape body that protrudes among this water stream channel 12 downwards, has an overhanging flange 22 around its top, and this body 10 is provided with an inwardly outstanding annular fixed seat 16 in the bottom of accommodating chamber 11, use for this flange 22 to be placed on it; And retainer ring 23, be cylinder, its outer rim can be linked in the inner edge of flexible sheet 21 upper ends, its outside has an overhanging flange 24, borrow this flange 24 to press on the upside of the flange 22 of this flexible sheet 21, and the upper end of this flexible sheet 21 partly is fixed on the holder 16 of this body 10.The central authorities of this retainer ring 23 have a guide hole 231 in addition; The side of guide hole is provided with a pressure guide hole 232, uses so that the hydraulic pressure in the accommodating chamber 11 can enter into the inside of flexible sheet 21.
This control member has a guide bar 25 in addition, this guide bar 25 is vertically set on this accommodating chamber 11 central authorities, its bottom penetrates the bottom of guide hole 23 flexible sheets 21 of these retainer ring 23 central authorities, and link together with an arc 26 that fits in these flexible sheet 21 bottom surfaces, this arc 26 can cooperate flexible sheet 21 bottoms, so that flexible sheet 21 dilatation stably; And a pressure ring 261, being linked in the end of guide bar 25, this pressure ring 26 can be with the bottom pressing and fixing of this flexible sheet 21 inboard at arc 26.
Therefore by this arc 26 and pressure ring 26, can be so that flexible sheet 21 be connected with the end of guide bar 25, when making the bottom of this flexible sheet 21 move down, can drive this guide bar 25 and move down together.The top of this guide bar 25 extends to the position of this accommodating chamber 11 near the top, and is provided with a baffle plate 27 in its end; An and spring 28, be sheathed on the outside of this guide bar 25, its bottom contacts with this holder 16, and the top presses on the bottom surface of this baffle plate 27, therefore when this guide bar 25 moves down, this spring 28 can be compressed, and can this guide bar 25 upwards be promoted to get back to the moving preceding location of seat by its elastic force.This baffle plate 27 is sheathed on the end of this guide bar 25 movably, and the end of guide bar 25 is provided with a threaded portion 25, and locks one adjust nut 252 on threaded portion 25, can locate this baffle plate 27 by this nut 252, and can adjust the position of this baffle plate 27.
The bottom of this water stream channel 12 is provided with the recess 17 of an arc in addition, when this flexible sheet 21 is stretched at utmost, its bottom can contact with this recess 17, block current in addition when avoiding flexible sheet 21 to contact fully with recess 17, therefore as shown in Figure 2, this case is provided with a groove 262 in the bottom surface of the arc 26 of these flexible sheet 21 bottoms, with so that arc 26 when contacting with recess 17, still has a slit that can supply weep to pass through.
As Fig. 1 and shown in Figure 3, this body 10 upper ends partly are connected with the outlet pipeline 3 of hydraulic press 1 by aforementioned conduit 15, so make the hydraulic pressure of outlet current of hydraulic press be guided to enter among this accommodating chamber 11.State as shown in Figure 1, for hydraulic press does not start as yet, or the state of its port of export pressure when low, this moment since the outlet pressure of hydraulic press much smaller than the summation of the elastic force of the elastic force of flexible sheet 21 and spring 28, therefore make flexible sheet 21 not by ejection, and remain positioned in the higher position, therefore make that the degree of opening of water stream channel 12 is bigger, and make more current can pass through water stream channel 12; And when the outlet pressure of hydraulic press rises, the pressure that this conduit 15 enters into accommodating chamber 11 rises, therefore make flexible sheet 21 suffered pressure rise, the pressure that is subjected to up to flexible sheet 21 is greater than the elastic force of itself and during the elastic force of spring 28, just can make flexible sheet 21 produce the distortion of stretching downwards, and make flexible sheet 21 produce downward displacement, and drive guide bar 25 together to bottom offset, therefore the length that makes flexible sheet 21 bottoms be inserted into this water stream channel 12 increases, therefore make that also the degree that water stream channel 12 is covered increases, and make the water flow that passes through water stream channel 12 reduce, therefore lower the inflow of hydraulic press 1.
The utility model is by the effect of above-mentioned control member 20, can be so that hydraulic press be when just starting, or the water supply volume of supply channel is big, and make the outlet pressure of hydraulic press be in when hanging down state, can be so that water stream channel 12 has bigger degree of opening, and make more current can enter among the inlet pipeline 2 of hydraulic press, therefore hydraulic press can be drawn into more water flow, make the water yield of hydraulic press increase, can be to meet hydraulic press 1 with the energy operation of maximum.And when hydraulic press is in the low water usage state, or the pressure of supply channel is when being close to the upper pressure limit that hydraulic press sets, this moment, the hydraulic pressure of outlet pipeline 3 rose, therefore this control member 20 produces the action that makes that the degree of opening of water stream channel 12 reduces, and the flow that makes current enter into hydraulic press reduces.
Effect by flow equilibrium device of the present utility model, can be so that the inflow of hydraulic press changing along with supply channel with the outlet pressure of aqueous condition and hydraulic press, when the water slack hours, because the water yield of hydraulic press is higher than the water supply volume of supply channel, therefore the outlet pressure of hydraulic press can rise, and can be when the hydraulic press outlet pressure rises the inflow of hydraulic press be reduced by flow equilibrium device of the present utility model, therefore can be so that the water yield that hydraulic press was drawn into reduces, and make the water yield of hydraulic press reduce, therefore can avoid the pressure of supply channel to rise rapidly, and can slow down the frequency of hydraulic press start and stop, and make that hydraulic press can be with lower load operation, and reach the purpose of saving the energy.Otherwise, when hydraulic press has just started or water use peak during the time, because the outlet pressure of hydraulic press is low, therefore the flow of inlet water that makes flow equilibrium device of the present utility model can control hydraulic press increases, so that hydraulic press has maximum inflow and water yield, so that the output of hydraulic press can meet the water supply volume of supply channel.
In addition, flow equilibrium device of the present utility model can combine with the pump of a hydraulic press, and makes it become the some of hydraulic press pump.As Fig. 5 and shown in Figure 6, be second embodiment of the present utility model.It is arranged on the hydraulic press pump 30, this pump 30 includes: a body 31, its inside has an intake chamber 32, a water-supplying chamber 33, and vane chambers 34, this intake chamber 32 can be connected with inlet pipeline, and can with Waterflow-guiding among vane chambers 34, after the wheel blade pressurization via vane chambers inside, send from water-supplying chamber 33 again.
This intake chamber 32 has an intake tunnel 35, and is provided with an accommodating chamber 36 in these intake tunnel 35 tops, is provided with a control member 40 in this accommodating chamber 36.This control member 40 comprises: a flexible sheet 41, be installed between this accommodating chamber 36 and this intake tunnel 35, and these flexible sheet 41 scalable distortion, and change the sectional area of this intake tunnel 35.The top of this flexible sheet 41 be fixed on by a retainer ring 42 accommodating chamber 36 the bottom a holder 37 on; Reach an arc 43, fit in the bottom surface of flexible sheet 41; And a guide bar 44, its bottom penetrates the bottom of this flexible sheet 41, and the top extends to the top of this accommodating chamber 36; Reach a baffle plate 45, be arranged on the top of guide bar 44; And a spring 46, be arranged between this baffle plate 45 and this holder 37; Reach one and adjust screw 47, be arranged on the top of guide bar 44, in order to adjust the position of baffle plate 45.And a guide hole 38, be arranged on pump 30 in order on the baffle plate 39 of separating intake chamber 32 and water-supplying chamber 33, and this guide hole 38 is communicated to this accommodating chamber 36 from this water-supplying chamber 33, therefore make the outlet hydraulic pressure of pump 30 to be guided and enter among this accommodating chamber 36.
As shown in Figure 7, the flow equilibrium device of the utility model second embodiment has identical effect with first embodiment, all can adjust the inflow of pump 30 by the outlet pressure of hydraulic press, to reach the purpose that makes that the water yield of pump 30 can cooperate with water supply volume, therefore reach the frequency of slowing down the hydraulic press start and stop, and the purpose of saving the energy.
Claims (3)
1. hydraulic press flow equilibrium device, comprising:
One accommodating chamber can be arranged on the intake tunnel of a hydraulic press; And
One guide wire is connected between the delivery port and this accommodating chamber of aforementioned hydraulic press pump, and the guiding of the outlet pressure of this hydraulic press enters among this accommodating chamber; And
One control member is arranged among this accommodating chamber, and by the control of this hydraulic press outlet pressure, and it is long-pending to change the open cross-sections of this hydraulic press intake tunnel;
It is characterized in that:
This control member comprises:
One flexible sheet is arranged between this accommodating chamber and this intake tunnel, is promoted by this hydraulic press outlet pressure, towards the elastic deformation of this water stream channel direction extension; And
One guide bar, an end is connected in the bottom of this flexible sheet, and the other end extends to this accommodating chamber top; And
One baffle plate is arranged on this guide bar top; And
One can promote this baffle plate, drives the spring that this guide bar and flexible sheet move up, and is arranged between this baffle plate bottom and this accommodating chamber bottom;
The outlet pressure of this hydraulic press can enter this accommodating chamber, and promotes this flexible sheet generation elastic deformation in various degree, and makes the sectional area of this intake tunnel change.
2. hydraulic press flow equilibrium device as claimed in claim 1 is characterized in that: wherein this accommodating chamber is arranged in the body cylindraceous, and this body can be arranged on the inlet pipeline of a hydraulic press.
3. hydraulic press flow equilibrium device as claimed in claim 1, it is characterized in that: wherein this accommodating chamber is arranged at the enclosure interior of a pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260319 CN2503120Y (en) | 2001-09-14 | 2001-09-14 | Flow balance device of hydropress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260319 CN2503120Y (en) | 2001-09-14 | 2001-09-14 | Flow balance device of hydropress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2503120Y true CN2503120Y (en) | 2002-07-31 |
Family
ID=33668502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01260319 Expired - Fee Related CN2503120Y (en) | 2001-09-14 | 2001-09-14 | Flow balance device of hydropress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2503120Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587311A (en) * | 2011-04-19 | 2012-07-18 | 长沙中联重科环卫机械有限公司 | Cleaning truck with sewage recycling function |
| CN104612978A (en) * | 2015-01-05 | 2015-05-13 | 浙江新控泵业有限公司 | Frequent-starting prevention water pump |
| CN108951764A (en) * | 2018-09-26 | 2018-12-07 | 瑞安市任想科技有限责任公司 | A kind of flow balance regulator for hydraulic press |
| CN109141565A (en) * | 2018-08-13 | 2019-01-04 | 江西百川水表有限公司 | A kind of intellectual water meter water flow adjuster |
-
2001
- 2001-09-14 CN CN 01260319 patent/CN2503120Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587311A (en) * | 2011-04-19 | 2012-07-18 | 长沙中联重科环卫机械有限公司 | Cleaning truck with sewage recycling function |
| CN104612978A (en) * | 2015-01-05 | 2015-05-13 | 浙江新控泵业有限公司 | Frequent-starting prevention water pump |
| CN104612978B (en) * | 2015-01-05 | 2017-01-25 | 浙江新控泵业有限公司 | Frequent-starting prevention water pump |
| CN109141565A (en) * | 2018-08-13 | 2019-01-04 | 江西百川水表有限公司 | A kind of intellectual water meter water flow adjuster |
| CN108951764A (en) * | 2018-09-26 | 2018-12-07 | 瑞安市任想科技有限责任公司 | A kind of flow balance regulator for hydraulic press |
| CN108951764B (en) * | 2018-09-26 | 2020-08-11 | 瑞安市任想科技有限责任公司 | Flow balance adjusting device of hydraulic press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |