JPWO2021251862A5 - - Google Patents
Download PDFInfo
- Publication number
- JPWO2021251862A5 JPWO2021251862A5 JP2022575488A JP2022575488A JPWO2021251862A5 JP WO2021251862 A5 JPWO2021251862 A5 JP WO2021251862A5 JP 2022575488 A JP2022575488 A JP 2022575488A JP 2022575488 A JP2022575488 A JP 2022575488A JP WO2021251862 A5 JPWO2021251862 A5 JP WO2021251862A5
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- hydraulic circuit
- flow fluctuations
- representation
- accumulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims 11
- 238000013016 damping Methods 0.000 claims 10
- 238000005553 drilling Methods 0.000 claims 6
- 238000009530 blood pressure measurement Methods 0.000 claims 5
- 239000012530 fluid Substances 0.000 claims 4
- 238000009527 percussion Methods 0.000 claims 4
- 238000002405 diagnostic procedure Methods 0.000 claims 3
- 239000011435 rock Substances 0.000 claims 3
- 238000009412 basement excavation Methods 0.000 claims 2
- 238000003745 diagnosis Methods 0.000 claims 2
- 238000004364 calculation method Methods 0.000 claims 1
- 238000004590 computer program Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Claims (15)
前記油圧回路が、ドリル工具（１０６）内に応力波を発生するための往復衝撃ピストン（１１５）及び／又は減衰ピストン（２２０）を備えた衝撃装置（１０５）に動力を供給するために油圧流体を提供し、
前記衝撃ピストン（１１５）及び／又は前記減衰ピストン（２２０）の往復運動が、油圧回路内に圧力変動及び流量変動を生じさせ、
少なくとも一つのアキュムレータ（１１２、２０８、２２４）が、油圧回路内の圧力変動及び／又は流量変動を低減するように構成されている
前記診断方法において、
該診断方法が、掘削中に、
・第一期間中、複数の圧力測定値を得るステップであって、前記複数の圧力測定値が、衝撃ピストン（１１５）及び／又は減衰ピストン（２２０）の往復運動の周波数の少なくとも二倍である周波数で得られるステップと、
・前記第一期間中の前記衝撃ピストン（１１５）及び／又は前記減衰ピストン（２２０）の往復運動によって引き起こされる油圧回路内の圧力変動及び／又は流量変動の表現を決定するステップと、
・ 油圧回路内の圧力変動及び／又は流量変動の決定された表現と、油圧回路内の圧力変動及び／又は流量変動の基準表現とに基づいて、少なくとも一つのアキュムレータ（１１２，２０８，２２４）の機能を診断するステップであって、前記診断ステップは、油圧回路における圧力変動及び／又は流量変動の決定された表現を、油圧回路における圧力変動及び／又は流量変動の基準表現と比較するステップを含むステップと、
・油圧回路内の圧力変動及び／又は流量変動に関する決定された表現が、圧力変動及び／又は流量変動に関する基準表現から所定の差で逸脱し、前記少なくとも一つのアキュムレータ（１１２、２０８、２２４）の不適切な機能を示す場合に、故障を示す信号を生成するステップと
を有することを特徴とする診断方法。 A diagnostic method for diagnosing the functioning of at least one accumulator (112, 208, 224) in a hydraulic circuit in percussive rock excavation, comprising:
the hydraulic circuit providing hydraulic fluid to power an impact device (105) having a reciprocating impact piston (115) and/or a damping piston (220) for generating stress waves in a drill tool (106);
The reciprocating motion of the impulse piston (115) and/or the damping piston (220) creates pressure and flow fluctuations in a hydraulic circuit;
At least one accumulator (112, 208, 224) is configured to reduce pressure and/or flow fluctuations in the hydraulic circuit.
The diagnostic method includes, during drilling,
- obtaining a plurality of pressure measurements during a first period , said plurality of pressure measurements being obtained at a frequency that is at least twice the frequency of the reciprocating motion of the impulse piston (115) and/or the damping piston (220);
- determining a representation of pressure and/or flow fluctuations in a hydraulic circuit caused by reciprocating motion of the impulse piston (115) and/or the damping piston (220) during the first period ;
diagnosing the functioning of at least one accumulator (112, 208, 224) based on the determined representation of the pressure and/or flow fluctuations in the hydraulic circuit and on a reference representation of the pressure and/or flow fluctuations in the hydraulic circuit, said diagnosing step comprising comparing the determined representation of the pressure and/or flow fluctuations in the hydraulic circuit with a reference representation of the pressure and/or flow fluctuations in the hydraulic circuit;
generating a signal indicating a fault if the determined representation of the pressure and/or flow fluctuations in the hydraulic circuit deviates by a predetermined difference from a reference representation of the pressure and/or flow fluctuations, indicating an improper functioning of said at least one accumulator (112, 208, 224);
A diagnostic method comprising the steps of:
をさらに含むことを特徴とする請求項１に記載の方法。The method of claim 1 further comprising:
をさらに含むことを特徴とする請求項１又は２に記載の方法。The method according to claim 1 or 2, further comprising:
請求項１～３の何れか一項に記載の方法。The method according to any one of claims 1 to 3.
・油圧回路の圧力変動又は流量変動の上側包絡線と下側包絡線との差分、及びThe difference between the upper and lower envelopes of the pressure or flow rate fluctuations of the hydraulic circuit, and
・圧力変動及び／又は流量変動の一つ以上の高調波の振幅であって、フーリエ変換に基づく圧力変動及び／又は流量変動の信号処理のような、圧力変動及び／又は流量変動の信号処理を用いて決定される前記高調波の振幅the amplitude of one or more harmonics of the pressure and/or flow fluctuations, the amplitude of said harmonics being determined using signal processing of the pressure and/or flow fluctuations, such as signal processing of the pressure and/or flow fluctuations based on a Fourier transform;
一つ又はそれ以上を用いて決定されるDetermined using one or more
ことを特徴とする請求項４に記載の方法。5. The method of claim 4.
ことを特徴とする請求項１～５の何れか一項に記載の方法。The method according to any one of claims 1 to 5.
をさらに含むことを特徴とする請求項１～６の何れか一項に記載の方法。The method according to any one of claims 1 to 6, further comprising:
をさらに有することを特徴とする請求項１～７の何れか一項に記載の方法。 The method according to any one of the preceding claims, further comprising the step of determining a representation of the pressure and/or flow rate fluctuations using a pressure sensor arranged downstream of a hydraulic pump (116, 221) supplying the hydraulic fluid flow and/or a pressure sensor arranged downstream of the impact device (105) and/or a pressure sensor arranged in a damping circuit of the impact device (105).
ことを特徴とする請求項１～８の何れか一項に記載の方法。 9. The method according to any one of the preceding claims, characterized in that the reference representation of the fluctuations of the hydraulic fluid is set and/or determined in dependence on the impact pressure and/or the supply pressure.
ことを特徴とする請求項１～９の何れか一項に記載の方法。 The method according to any one of claims 1 to 9, further comprising the step of diagnosing at least one accumulator (112, 208, 224) continuously and/or at predetermined intervals during drilling, and if the diagnosis indicates a fault , generating a signal indicative of the fault to alert a drilling operator and/or a control system controlling the drilling.
ことを特徴とするコンピュータプログラム。 A computer program comprising instructions which, when said program is executed by a computer, cause said computer to carry out the method according to any one of claims 1 to 10.
ことを特徴とするコンピュータ可読媒体。 A computer readable medium comprising instructions which, when executed by a computer, cause the computer to carry out the method of any one of claims 1 to 10.
前記油圧回路が、ドリル工具（１０６）内に応力波を発生するための往復衝撃ピストン（１１５）及び／又は減衰ピストン（２２０）を備えた衝撃装置（１０５）に動力を供給するために油圧流体を提供し、
前記衝撃ピストン（１１５）及び／又は前記減衰ピストン（２２０）の往復運動が、油圧回路内に圧力変動及び流量変動を生じさせ、
少なくとも一つのアキュムレータ（１１２、２０８、２２４）が、油圧回路内の圧力変動及び／又は流量変動を低減するように構成されており、
該システムが、
・第一期間中、前記衝撃ピストン（１１５）及び／又は前記減衰ピストン（２２０）の往復運動の周波数の少なくとも二倍である周波数で複数の圧力測定値を獲得するように構成された獲得手段とし、
・掘削中、第一期間中の前記衝撃ピストン（１１５）及び／又は前記減衰ピストン（２２０）の往復運動によって引き起こされる油圧回路内の圧力変動及び／又は流量変動の表現を決定するように構成された決定手段とし、
・油圧回路内の圧力変動及び／又は流量変動の決定された表現と、油圧回路内の圧力変動及び／又は流量変動の基準表現とに基づいて、少なくとも一つのアキュムレータ（１１２，２０８，２２４）の機能を診断するように構成された計算手段であって、前記診断が油圧回路における圧力変動及び／又は流量変動の決定された表現を、油圧回路における圧力変動及び／又は流量変動の基準表現と比較するステップを含む、計算手段と、
・油圧回路における圧力変動及び／又は流量変動に関する決定された表現が、圧力変動及び／又は流量変動に関する基準表現から所定の差で逸脱し、前記少なくとも一つのアキュムレータ（１１２、２０８、２２４）の不適切な機能を示す場合に、故障を示す信号を生成するように構成された故障指摘手段と、
を有することを特徴とするシステム。 A system for diagnosing the functioning of at least one accumulator (112, 208, 224) in a hydraulic circuit in percussive rock excavation, comprising:
the hydraulic circuit providing hydraulic fluid to power an impact device (105) having a reciprocating impact piston (115) and/or a damping piston (220) for generating stress waves in a drill tool (106);
The reciprocating motion of the impulse piston (115) and/or the damping piston (220) creates pressure and flow fluctuations in a hydraulic circuit;
At least one accumulator (112, 208, 224) is configured to reduce pressure and/or flow fluctuations in the hydraulic circuit ;
The system comprises:
acquisition means configured to acquire, during a first period , a plurality of pressure measurements at a frequency that is at least twice the frequency of the reciprocating motion of said percussion piston (115) and/or said damping piston (220);
determining means configured to determine, during drilling, a representation of pressure and/or flow fluctuations in a hydraulic circuit caused by a reciprocating movement of said percussion piston (115) and/or said damping piston (220) during a first period ;
- calculation means arranged to diagnose a function of at least one accumulator (112, 208, 224) on the basis of a determined representation of the pressure and/or flow fluctuations in the hydraulic circuit and a reference representation of the pressure and/or flow fluctuations in the hydraulic circuit, said diagnosis comprising a step of comparing the determined representation of the pressure and/or flow fluctuations in the hydraulic circuit with a reference representation of the pressure and/or flow fluctuations in the hydraulic circuit;
fault indication means configured to generate a signal indicative of a fault if a determined representation of the pressure and/or flow fluctuations in the hydraulic circuit deviates by a predetermined difference from a reference representation of the pressure and/or flow fluctuations, indicating an improper functioning of said at least one accumulator (112, 208, 224);
A system comprising:
・ 油圧を供給する油圧ポンプ（１１６、２２１）の下流で、衝撃装置（１０５）の上流に配置されたアキュムレータ（１１２）、
・衝撃装置（１０５）の下流に配置されたアキュムレータ（２０８）、及び
・衝撃装置（１０５）の減衰回路に配置されたアキュムレータ（２２４）
の一つ又は複数である
ことを特徴とする請求項１３に記載のシステム。 At least one accumulator (112, 208, 224) of the hydraulic circuit is
an accumulator (112) arranged downstream of a hydraulic pump (116, 221) supplying hydraulic pressure and upstream of the impact device (105);
an accumulator (208) arranged downstream of the percussion device (105), and an accumulator (224) arranged in the damping circuit of the percussion device (105).
14. The system of claim 13, wherein the one or more of:
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2050667-1 | 2020-06-08 | ||
| SE2050667A SE2050667A1 (en) | 2020-06-08 | 2020-06-08 | Method and System for Diagnosing an Accumulator in a Hydraulic Circuit |
| PCT/SE2021/050455 WO2021251862A1 (en) | 2020-06-08 | 2021-05-12 | Method and system for diagnosing an accumulator in a hydraulic circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2023529438A JP2023529438A (en) | 2023-07-10 |
| JPWO2021251862A5 true JPWO2021251862A5 (en) | 2024-06-12 |
Family
ID=76076417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022575488A Pending JP2023529438A (en) | 2020-06-08 | 2021-05-12 | Accumulator diagnostic method and system in hydraulic circuit |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP4162141A1 (en) |
| JP (1) | JP2023529438A (en) |
| KR (1) | KR20230020390A (en) |
| CN (1) | CN115698458A (en) |
| AU (1) | AU2021289190A1 (en) |
| CA (1) | CA3180154A1 (en) |
| SE (1) | SE2050667A1 (en) |
| WO (1) | WO2021251862A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4493783A1 (en) * | 2022-03-15 | 2025-01-22 | Epiroc Rock Drills Aktiebolag | A damping arrangement and a hydraulic rock drilling machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2633339A1 (en) * | 1988-06-28 | 1989-12-29 | Eimco Secoma | DEVICE FOR MONITORING THE CORRECT OPERATION OF AN ACCUMULATOR BELONGING TO A HYDRAULIC APPARATUS OR CIRCUIT |
| FI121219B (en) * | 2001-10-18 | 2010-08-31 | Sandvik Tamrock Oy | Method and apparatus for monitoring the operation of the impactor and for adjusting the operation of the impactor |
| FI115552B (en) * | 2002-11-05 | 2005-05-31 | Sandvik Tamrock Oy | Arrangement for controlling rock drilling |
| SE532482C2 (en) * | 2007-04-11 | 2010-02-02 | Atlas Copco Rock Drills Ab | Method, apparatus and rock drilling rig for controlling at least one drilling parameter |
| US9151117B2 (en) * | 2012-08-31 | 2015-10-06 | Caterpillar Global Mining Llc | Media pressure cavitation protection system for rock drills |
| SE536711C2 (en) * | 2012-10-29 | 2014-06-10 | Atlas Copco Rock Drills Ab | Damping device for percussion, percussion, rock drill and method of damping at a rock drill |
| DE102014108848A1 (en) * | 2014-06-25 | 2015-12-31 | Construction Tools Gmbh | Device for pressure monitoring |
| GB2546790A (en) * | 2016-01-29 | 2017-08-02 | Ge Oil & Gas Uk Ltd | Hydraulic accumulator monitoring system |
-
2020
- 2020-06-08 SE SE2050667A patent/SE2050667A1/en not_active Application Discontinuation
-
2021
- 2021-05-12 EP EP21727619.5A patent/EP4162141A1/en active Pending
- 2021-05-12 JP JP2022575488A patent/JP2023529438A/en active Pending
- 2021-05-12 AU AU2021289190A patent/AU2021289190A1/en active Pending
- 2021-05-12 CN CN202180039304.7A patent/CN115698458A/en active Pending
- 2021-05-12 KR KR1020227038370A patent/KR20230020390A/en active Search and Examination
- 2021-05-12 CA CA3180154A patent/CA3180154A1/en active Pending
- 2021-05-12 WO PCT/SE2021/050455 patent/WO2021251862A1/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2999968C (en) | Pump integrity detection, monitoring and alarm generation | |
| EP2296724B1 (en) | Applications of pump performance monitoring | |
| CN109386279B (en) | Shaft gas invasion detection method and system | |
| CN106089184B (en) | method and device for diagnosing working condition of underground oil well pump | |
| JP4317017B2 (en) | Method and apparatus for monitoring operation of impact device | |
| RU2008109210A (en) | VIBRATION MONITORING | |
| US8365840B2 (en) | Method and device for controlling at least one drilling parameter for rock drilling | |
| JP2008542587A5 (en) | ||
| US20140305636A1 (en) | Sensing in artificial lift systems | |
| WO2017156353A1 (en) | Method and apparatus for suction monitoring and control in rig pumps | |
| JPWO2021251862A5 (en) | ||
| US7830749B2 (en) | Method of filtering pump noise | |
| WO2020077469A1 (en) | System and method for operating downhole pump | |
| JP2023529438A (en) | Accumulator diagnostic method and system in hydraulic circuit | |
| CN204283407U (en) | Based on borehole pump performance monitoring and the fault diagnosis system of pump pressure test | |
| CN103069100A (en) | Method and system for determining a variation in a flushing medium flow and rock drilling apparatus | |
| JP6653072B2 (en) | Method for evaluating the number of impacts of hydraulic hammer, method for exploring front ground using the same, and system for exploring front ground | |
| KR100804205B1 (en) | Remote Sensing System and Fault Diagnosis Method of Hydraulic Pump | |
| RU2183266C1 (en) | Method of determining rock-cutting tool serviceability | |
| JP4822745B2 (en) | Pressure pulsation analyzer | |
| JP6481500B2 (en) | Method for evaluating number of hammer hits, exploration method for front ground using the hammer, and exploration system for front ground | |
| JP6593624B2 (en) | Method for evaluating the number of hammer hits and a method for exploring the front ground using the hammer | |
| Liu et al. | Study on Vibration Monitoring of Water Hammer in Pipeline Structure | |
| Premachandran | Charecteristics of Performance Monitering system for DTH drilling-Atlas Copco Edge | |
| Martinez et al. | Dynamic Monitoring For Early Failure Diagnosis And Modern Techniques For Design Of Positive Displacement Pumping Systems |