CN203968010U - A kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) - Google Patents
A kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) Download PDFInfo
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- CN203968010U CN203968010U CN201420319529.5U CN201420319529U CN203968010U CN 203968010 U CN203968010 U CN 203968010U CN 201420319529 U CN201420319529 U CN 201420319529U CN 203968010 U CN203968010 U CN 203968010U
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- magnet
- sheet metal
- skeleton
- piezoelectric patches
- circuit board
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- 238000011084 recovery Methods 0.000 title claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 34
- 238000012544 monitoring process Methods 0.000 abstract description 16
- 238000010248 power generation Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 240000008168 Ficus benjamina Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The utility model relates to a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT), belongs to new forms of energy and technical field of power generation.The two ends, left and right of outer ring and inner ring are respectively equipped with inner groove and outer groove, and described two inner ring outer groove places are provided with by interference fit the skeleton that is provided with disc respectively; Each skeleton both sides are provided with respectively circuit board and sheet metal and form raia, on the sheet metal at corresponding raia place, are bonded with piezoelectric patches, and excited magnet is connected with piezoelectric patches and sheet metal by screw; On skeleton, corresponding raia place is provided with transducer; Piezoelectric patches, sheet metal and transducer are connected with circuit board by different wire groups; Two exciting magnets are embedded in respectively cylindrical roller both sides just right with two excited magnets, and the opposite pole of described each axially adjacent two magnet is near installing.Features and advantages: there is self energizing sensor monitoring function, as independently standarized component use, without the structure that changes its erection unit, can realize real time on-line monitoring truly.
Description
Technical field
The utility model belongs to new forms of energy and power field, is specifically related to a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT).
Background technology
Bearing is a kind of typical mechanical basic part, has application extremely widely in fields such as machinery, vehicle, Aero-Space, steamer and the energy; But bearing is also one of the most flimsy part in rotary machine, 30% of rotating machinery fault is to be caused by bearing failure.Therefore, the status monitoring of bearing and Incipient Fault Diagnosis have caused people's great attention.The on-line monitoring of bearing state has progressively become the indispensable technology in field such as large-scale wind driven generator, steamer, high ferro and airborne vehicle, and the index of required monitoring comprises such as temperature, vibration, rotating speed and noise etc.Early stage bearing monitoring system is mainly external hanging type, and one of its drawback is distant between transducer and signal source, belongs to non-contacting indirect measurement, therefore error is larger.In recent years, people have proposed again multi-form Embedded Monitoring System in succession, this method can solve certainty of measurement and accuracy problem, but need to change structure or its integrality of relevant device, so that installation sensing and monitoring system, the problems such as this not only easily causes that the stress of equipment component is concentrated also cannot realize on the equipment of some complex structures or limited space; The most key, in the time that monitoring system need to be rotated with bearing inner race or outer ring, inconvenience is by line powered, and employing powered battery is very short service time.Therefore, current bearing monitoring system is all also non real-time, non-cpntact measurement indirectly substantially, is difficult to obtain timely and accurately the running status of bearing.
Summary of the invention
For existing bearing monitoring system existing all kinds of problem in actual applications, the utility model provides a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT).The embodiment that the utility model adopts is: a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT), and mainly by outer ring, cylindrical roller, pearl frame one and pearl frame two, inner ring, ring skeleton one and skeleton two, annular circuit board one and circuit board two, sheet metal one and sheet metal two, piezoelectric patches one and piezoelectric patches two, excited magnet one and excited magnet two, exciting magnet one with exciting magnet is second-class forms.Two ends, described outer ring are provided with inner groove, inner ring two ends are provided with outer groove, and described two inner ring outer groove places are provided with by interference fit the skeleton one and the skeleton two that are provided with disc respectively; Circuit board one and sheet metal one are fixed by screws in skeleton one left and right sides, and form airtight raia one with skeleton one; Piezoelectric patches one is bonded on sheet metal one and is placed in raia one; Excited magnet one is connected with piezoelectric patches one and sheet metal one by screw; Piezoelectric patches one and sheet metal one are connected with circuit board one by wire group one; Transducer one is fixed on ring skeleton one and is placed in raia one; Described transducer one is connected with circuit board one by wire group two; Sheet metal two and circuit board two are fixed by screws in the left and right sides of skeleton two, and form airtight raia two with ring skeleton two; Piezoelectric patches two is bonded on sheet metal two and is placed in airtight raia two; Excited magnet two is connected with piezoelectric patches two and sheet metal two by screw; Piezoelectric patches two and sheet metal two are connected with circuit board two by wire group three; Transducer two is fixed on ring skeleton two and is placed in airtight raia two; Described transducer two is connected with circuit board two through wire group four; Exciting magnet one and exciting magnet two are embedded in cylindrical roller both sides, and just right with excited magnet one and excited magnet two respectively, and the opposite pole of described each axially adjacent two magnet is near installing.
For improving energy output, the radius of described each magnet equates and by formula
calculate, wherein: R is the radius of cylinder roller bearing inner ring raceway, r is cylindrical roller radius, n
0for the quantity of cylindrical roller, that is the quantity of exciting magnet one and exciting magnet two;
be called and determine angle ratio, Q2=360/n
0be the angle between the line of two adjacent exciting magnet one or two adjacent exciting magnet Er centers and its centre of gyration O, Q1 be by centre of gyration O and and the tangent straight line of described exciting magnet one or two between angle; Preferably determine angle than being k=1.5～3.5.
In the course of work, cylindrical roller is along with outer ring or inner ring rotate and roll, also drive cylindrical roller simultaneously and rotate together with exciting magnet two with the exciting magnet one on being embedded in described cylindrical roller, thereby make to produce relative motion between exciting magnet one and excited magnet one and exciting magnet two and excited magnet two, and active force between active force between exciting magnet one and excited magnet one and exciting magnet two and excited magnet two is changed, chase after the flexural deformation that piezoelectric patches one and piezoelectric patches two are replaced, convert mechanical energy to electric energy; The electric energy that piezoelectric patches one generates is exported to the power conversion treatment circuit on circuit board one through wire group one, then exports to transducer one through wire group two; The electric energy that piezoelectric patches one generates is exported to the power conversion treatment circuit on circuit board two through wire group three, then exports to transducer two through wire group four; Thereby realize the self-powered Real-Time Monitoring of bearing movable state.
For guaranteeing that the electric energy of energy accumulator generation can meet the self-powered demand of transducer, should improve the electric energy that energy accumulator produces as far as possible.When exciting magnet and excited magnet relatively rotate one week, the electric energy that single energy accumulator produces is
wherein: C
ffor the free capacitance of energy accumulator, V
g=η F is the open circuit voltage that energy accumulator generates, and η is the coefficient relevant with energy accumulator yardstick and material, and F is the suffered applied external force of energy accumulator, h=nF
2be called energy coefficient.Obviously, in the time that other condition is constant, can improve voltage by improving the suffered applied external force F of energy accumulator, improve electric energy by improving energy coefficient h.The actual conditions that are spatial distribution according to the operation principle of the utility model cylinder roller bearing and magnetic field, arbitrary excited magnet one is all subject to that multiple exciting magnets one act on, arbitrary excited magnet two is all subject to multiple exciting magnet two effects simultaneously simultaneously.Therefore in the situation that other condition is definite, corresponding to determine angle more relevant than k with it respectively for described certain excited magnet one and the suffered active force of excited magnet two, and exist and preferably determine angle and make directed force F, voltage V than k
g, and electric energy E
glarger; In the time getting k=1.5～3.5, the voltage obtaining and electric energy are all larger, can guarantee coefficient of discharge be not less than its peaked 1/2.
Fig. 6 provided different determine angle than time excited magnet suffered directed force F with corner than the trial curve of j=Q3/Q1, wherein Q3 is the angle between the line of excited magnet and exciting magnet center and its centre of gyration O, is the distance between excited magnet and exciting magnet therefore corner characterizes than j.Fig. 6 explanation, determine angle when different, the suffered exciting magnet active force of excited magnet big or small and the number of times difference encouraging.Active force maximum, excitation number of times and energy coefficient and determine angle than the relation curve of k as shown in Figure 7.Obviously, in the time getting k=1.5～3.5, gained voltage and electric energy are all larger, energy coefficient be greater than its peaked 1/2.
The voltage that energy accumulator produces and electric energy except with directed force F, determine outside the Pass angle has than k, follow and also have action time of directed force F very large relation.Work as directed force F, determine angle while determining than k, according to I=Ft, if exciting magnet t one or two action time is too small, energy accumulator produces voltage and electric energy hardly, can improve the momentum to energy accumulator by improving action time t.According to calculating, cylindrical roller (exciting magnet one or two) revolution week age is T=120 (R+r)/nR, wherein R is inner ring raceway radius, and r is cylindrical roller radius, and n (r/min) is inner ring rotating speed (supposing that outer ring rotating speed is 0).T=240 action time (R+r) arctan (r
0/ (R+r)) and/n π R, wherein r
0for exciting magnet radius.Also the direct time that exciting magnet public affairs circle is in relative rotation T with the identical radius of turn of the utility model exciting magnet one or two (cylindrical roller)
0=60/n, be t action time
0=120arctan (r
0/ (R+r))/π n, the time is than γ=t/r
0=2 (R+r)/R.So the utility model can extend the action time of exciting magnet one or two, can improve energy accumulator and produce voltage and electric energy.
Advantage and characteristic: bearing self has self energizing sensor monitoring function, as independently standarized component use, without the structure that changes its erection unit, can realize real time on-line monitoring truly.
Brief description of the drawings
Fig. 1 is the section of structure of cylinder roller bearing in preferred embodiment of the utility model;
Fig. 2 is the structural representation while ring skeleton not being installed on bearing inner race and outer ring;
Fig. 3 is the A-A view of Fig. 1;
Fig. 4 is the B-B view of Fig. 1;
Fig. 5 is exciting magnet and the excited magnet structural representation after relatively rotating in the utility model;
Fig. 6 be different determine angle than time excited magnet suffered active force and corner ratio relation curve;
Fig. 7 is energy coefficient, maximum force and excitation number of times and the relation curve of determining angle ratio;
Embodiment
For existing bearing monitoring system existing all kinds of problem in actual applications, the utility model provides a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT).The embodiment that the utility model adopts is: a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT), mainly by outer ring 1, cylindrical roller 2, pearl frame 1 and pearl frame 23 ', inner ring 4, ring skeleton 1 and skeleton 25 ', annular circuit board 1 and circuit board 26 ', sheet metal 1 and sheet metal 27 ', piezoelectric patches 1 and piezoelectric patches 2 10 ', excited magnet 1 and excited magnet 2 11 ', exciting magnet 1 and exciting magnet 28 ' etc. formation.
In the utility model, 1 two ends, left and right, described outer ring are respectively equipped with inner groove 101 and 101 ', and described inner ring 4 two ends, left and right are respectively equipped with outer groove 401 and 401 '; The left outside annular groove 401 of described inner ring is provided with the ring skeleton 25 that is provided with disc 501 by interference fit, the outer hole of described ring skeleton 25 and the right inside annular groove of outer ring 1 101 are matched in clearance; The outer hole that the right outside annular groove 401 ' of described inner ring is provided with the ring skeleton 25 that is provided with disc 501 ' by interference fit ', described ring skeleton 25 ' and the right inside annular groove 101 ' of outer ring 1 are matched in clearance; Described circuit board 1 and sheet metal 1 are fixed by screws in respectively left side and the right side of ring skeleton 1, and jointly form airtight raia 1 with ring skeleton 1 and disc 501; Described piezoelectric patches 1 is bonded on sheet metal 1 and is placed in raia 1; Excited magnet 1 is connected with piezoelectric patches 1 and sheet metal 1 by screw; Described piezoelectric patches 1 and sheet metal 1 are connected with circuit board 1 by wire group 1; Transducer 1 is fixed on ring skeleton 1 and is placed in raia 1; Described transducer 1 is connected with circuit board 1 by wire group 2 12; Described sheet metal 27 ' and circuit board 26 ' is fixed by screws in respectively ring skeleton 25 ' the left and right sides, and jointly form airtight raia 2 502 with the disc 501 ' on ring skeleton 25 ' and described ring skeleton 25 ' '; Described piezoelectric patches 2 10 ' be bonded in sheet metal 27 ' is upper and be placed in airtight raia 2 502 ' in; Excited magnet 2 11 ' by screw and piezoelectric patches 2 10 ' and sheet metal 27 ' be connected; Described piezoelectric patches 2 10 ' and sheet metal 27 ' is by wire group 39 ' with circuit board 26 ' is connected; Transducer 2 13 ' be fixed on ring skeleton 25 ' is upper and be placed in airtight raia 2 502 ' in; Described transducer 2 13 ' by wire group 4 12 ' and circuit board 26 ' be connected; Exciting magnet 1 and exciting magnet 28 ' be embedded in cylindrical roller 2 both sides, and respectively with excited magnet 1 and excited magnet 2 11 ' just right; Opposite pole between excited magnet 1 and exciting magnet 1, between exciting magnet 1 and exciting magnet 28 ' between and exciting magnet 28 ' and excited magnet 11 ' is near installing.
For improving energy output, the radius of described each magnet equates and by formula
calculate, wherein: R is the radius of cylinder roller bearing inner ring raceway, r is cylindrical roller 2 radiuses, n
0for the quantity of cylindrical roller 2, that is exciting magnet 1 and exciting magnet 28 ' quantity;
be called and determine angle ratio, Q2=360/n
0be two adjacent exciting magnets 1 or two adjacent exciting magnets 28 ' center and the line of its centre of gyration O between angle, Q1 is for by centre of gyration O and and described exciting magnet one 8 or 28 ' angle between tangent straight line; Preferably determine angle than being k=1.5～3.5.
In the course of work, cylindrical roller 2 is along with outer ring 1 or inner ring 4 rotate and roll, also drive simultaneously cylindrical roller 2 and with exciting magnet 1 and exciting magnet 28 on being embedded in described cylindrical roller ' together with rotate, thereby make exciting magnet 1 and excited magnet 1 and exciting magnet 28 and produce relative motion between ' and excited magnet 2 11 ', and make the active force between exciting magnet 1 and excited magnet 1, between and exciting magnet 28 ' and excited magnet 2 11 ', active force changes, force piezoelectric patches 1 and piezoelectric patches 2 10 ' flexural deformation that replaces, convert mechanical energy to electric energy, the electric energy that piezoelectric patches 1 generates is exported to the power conversion treatment circuit on circuit board 1 through wire group 1, then exports to transducer 1 through wire group 2 12, piezoelectric patches 1 ' generate electric energy through wire group 39 ' is exported to circuit board 26 ' on power conversion treatment circuit, then through wire group 4 12 ' export to transducer 2 13 ', thereby realize the self-powered Real-Time Monitoring of bearing movable state.
For guaranteeing that the electric energy of energy accumulator generation can meet the self-powered demand of transducer, should improve the electric energy that energy accumulator produces as far as possible.When exciting magnet and excited magnet relatively rotate one week, the electric energy that single energy accumulator produces is
wherein: C
ffor the free capacitance of energy accumulator, V
g=η F is the open circuit voltage that energy accumulator generates, and η is the coefficient relevant with energy accumulator yardstick and material, and F is the suffered applied external force of energy accumulator, h=nF
2be called energy coefficient.Obviously, in the time that other condition is constant, can improve voltage by improving the suffered applied external force F of energy accumulator, improve electric energy by improving energy coefficient h.Effect that the actual conditions that are spatial distribution according to the operation principle of the utility model cylinder roller bearing and magnetic field, arbitrary excited magnet 1 is all subject to multiple exciting magnets one 8 effects, arbitrary excited magnet 2 11 simultaneously ' be all subject to multiple exciting magnets 28 ' simultaneously.Therefore in the situation that other condition is definite, described certain excited magnet 1 and excited magnet 2 11 ' corresponding to determine angle more relevant than k with it respectively for suffered active force, and exist and preferably determine angle and make directed force F, voltage V than k
g, and electric energy E
glarger.In the utility model, preferably determine angle than being k=1.5～3.5 o'clock, the voltage obtaining and electric energy are all larger.
Fig. 6 provided different determine angle than time excited magnet suffered directed force F with corner than the trial curve of j=Q3/Q1, wherein Q3 is the angle between the line of excited magnet and exciting magnet center and its centre of gyration O, is the distance between excited magnet and exciting magnet therefore corner characterizes than j.Fig. 6 explanation, determine angle when different, the suffered exciting magnet active force of excited magnet big or small and the number of times difference encouraging.Active force maximum, excitation number of times and energy coefficient and determine angle than the relation curve of k as shown in Figure 7.Obviously, in the time getting k=1.5～3.5, gained voltage and electric energy are all larger, energy coefficient be greater than its peaked 1/2.
The voltage that energy accumulator produces and electric energy except with directed force F, determine outside the Pass angle has than k, follow and also have action time of directed force F very large relation.Work as directed force F, determine angle while determining than k, according to I=Ft, if exciting magnet one 8 or 28 ' action time t too small, energy accumulator produces voltage and electric energy hardly, can improve the momentum to piezoelectric patches by improving action time t.According to calculating, cylindrical roller 2 (exciting magnet one 8 or 28 ') revolution week age is T=120 (R+r)/nR, wherein R is inner ring 4 raceway radiuses, r is cylindrical roller 2 radiuses, and n (r/min) is inner ring 4 rotating speeds (supposing that outer ring 1 rotating speed is 0).T=240 action time (R+r) arctan (r
0/ (R+r)) and/n π R, wherein r
0for exciting magnet radius.With the utility model exciting magnet one 8 or 28 ' also the direct time that exciting magnet public affairs circle is in relative rotation T to (cylindrical roller 2) identical radius of turn
0=60/n, be t action time
0=120arctan (r
0/ (R+r))/π n, the time is than γ=t/t
0=2 (R+r)/R.So the utility model can extend exciting magnet one 8 or 28 ' action time, can improve energy accumulator and produce voltage and electric energy.
Claims (3)
1. a Blast Furnace Top Gas Recovery Turbine Unit (TRT), mainly by outer ring, cylindrical roller, pearl frame one and pearl frame two, inner ring, ring skeleton one and skeleton two, annular circuit board one and circuit board two, sheet metal one and sheet metal two, piezoelectric patches one and piezoelectric patches two, excited magnet one and excited magnet two, exciting magnet one with exciting magnet is second-class forms, it is characterized in that: two ends, described outer ring are provided with inner groove, inner ring two ends are provided with outer groove, two inner ring outer groove places are provided with by interference fit the skeleton one and the skeleton two that are provided with disc respectively; Circuit board one and sheet metal one are fixed by screws in skeleton one left and right sides, and form airtight raia one with skeleton one; Piezoelectric patches one is bonded on sheet metal one and is placed in raia one; Excited magnet one is connected with piezoelectric patches one and sheet metal one by screw; Piezoelectric patches one and sheet metal one are connected with circuit board one by wire group one; Transducer one is fixed on ring skeleton one and is placed in raia one; Described transducer one is connected with circuit board one by wire group two; Sheet metal two and circuit board two are fixed by screws in the left and right sides of skeleton two, and form airtight raia two with ring skeleton two; Piezoelectric patches two is bonded on sheet metal two and is placed in airtight raia two; Excited magnet two is connected with piezoelectric patches two and sheet metal two by screw; Piezoelectric patches two and sheet metal two are connected with circuit board two by wire group three; Transducer two is fixed on ring skeleton two and is placed in airtight raia two; Described transducer two is connected with circuit board two through wire group four; Exciting magnet one and exciting magnet two are embedded in respectively on retainer one and retainer two, and just right with excited magnet one and excited magnet two respectively, and the opposite pole of described each axially adjacent two magnet is near installing.
2. a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) according to claim 1, is characterized in that: the radius of described each magnet equates and by formula
calculate, wherein: R is the radius of cylinder roller bearing inner ring raceway, r is cylindrical roller radius, n
0for the quantity of cylindrical roller;
be called and determine angle ratio, Q2=360/n
0be the angle between the line of two adjacent exciting magnet one or two adjacent exciting magnet Er centers and its centre of gyration O, Q1 be by centre of gyration O and and the tangent straight line of described exciting magnet one or two between angle; Preferably determine angle than being k=1.5～3.5.
3. a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) according to claim 1, it is characterized in that: exciting magnet one/bis-revolution week age is T=120 (R+r)/nR, wherein R is inner ring raceway radius, r is cylindrical roller radius, n (r/min) is inner ring rotating speed, t=240 action time (R+r) arctan (r
0/ (R+r)) and/n π R, wherein r
0for exciting magnet radius; Radius of turn identical with exciting magnet one/bis-time that directly exciting magnet public affairs circle are in relative rotation T
0=60/n, be t action time
0=120arctan (r
0/ (R+r))/π n, the time is than γ=t/t
0=2 (R+r)/R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420319529.5U CN203968010U (en) | 2014-06-05 | 2014-06-05 | A kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420319529.5U CN203968010U (en) | 2014-06-05 | 2014-06-05 | A kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203968010U true CN203968010U (en) | 2014-11-26 |
Family
ID=51928551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420319529.5U Expired - Fee Related CN203968010U (en) | 2014-06-05 | 2014-06-05 | A kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203968010U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019163566A1 (en) * | 2018-02-23 | 2019-08-29 | Ntn株式会社 | Bearing |
| CN113364349A (en) * | 2021-07-05 | 2021-09-07 | 浙江师范大学 | Train wheel set monitoring device |
-
2014
- 2014-06-05 CN CN201420319529.5U patent/CN203968010U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019163566A1 (en) * | 2018-02-23 | 2019-08-29 | Ntn株式会社 | Bearing |
| JP2019143765A (en) * | 2018-02-23 | 2019-08-29 | Ntn株式会社 | bearing |
| CN111727328A (en) * | 2018-02-23 | 2020-09-29 | Ntn株式会社 | Bearing assembly |
| US11293494B2 (en) | 2018-02-23 | 2022-04-05 | Ntn Corporation | Bearing |
| JP7074500B2 (en) | 2018-02-23 | 2022-05-24 | Ntn株式会社 | bearing |
| CN111727328B (en) * | 2018-02-23 | 2022-08-09 | Ntn株式会社 | Bearing assembly |
| CN113364349A (en) * | 2021-07-05 | 2021-09-07 | 浙江师范大学 | Train wheel set monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |