WO2001096765A2 - Dispositif de controle de l'usure d'un joint de piston et appareil de radiocommunication distant - Google Patents

Dispositif de controle de l'usure d'un joint de piston et appareil de radiocommunication distant Download PDF

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Publication number
WO2001096765A2
WO2001096765A2 PCT/US2001/040984 US0140984W WO0196765A2 WO 2001096765 A2 WO2001096765 A2 WO 2001096765A2 US 0140984 W US0140984 W US 0140984W WO 0196765 A2 WO0196765 A2 WO 0196765A2
Authority
WO
WIPO (PCT)
Prior art keywords
seal
wear
monitor
piston
monitors
Prior art date
Application number
PCT/US2001/040984
Other languages
English (en)
Other versions
WO2001096765A3 (fr
Inventor
Fred B. Pippert
Joel J. Pippert
Original Assignee
Pippert Fred B
Pippert Joel J
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pippert Fred B, Pippert Joel J filed Critical Pippert Fred B
Priority to AU2001273582A priority Critical patent/AU2001273582A1/en
Publication of WO2001096765A2 publication Critical patent/WO2001096765A2/fr
Publication of WO2001096765A3 publication Critical patent/WO2001096765A3/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/005—Sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/143—Sealing provided on the piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0205—Piston ring wear

Definitions

  • This invention is primarily related to monitoring the wear of seals in pumps. More
  • the present invention relates to monitoring the wear of piston seals in pumps
  • the pumps used to pump and pressurize fluids used in the drilling of wells include
  • piston rubber 4 is mounted on a metallic piston body 5. After a certain period of use, the rear
  • section 4a of the piston rubber wears to the point that the metal piston body may engage
  • 5540448 and 5246235 disclose, among other features, embedded or adhered electrical
  • the present invention describes wear detection means in seals that indicate the amount of seal wear and/or the distribution of the seal wear over the seal surface.
  • information regarding the seal is monitored and transmitted wirelessly
  • An obj ect of the present invention is to develop a " smart piston" that can measure and determine when the piston rubber has worn to the point that there is imminent danger of damage to the piston liner.
  • Another object of the invention is to detect eccentric wear on a seal.
  • Yet another obj ect of the present invention is to wirelessly transmit information about a seal to a remote location for analysis.
  • Figure 1 illustrates a piston body 5 operating within a piston liner 11.
  • a liner adapter 12 encircles the piston.
  • a rod nut 1 holds the piston body 5 on a threaded end of a piston rod 7.
  • a piston rubber 4 is held at the end of the piston body 5 with a frustro-conical retaining plate 3. The plate 3 is held axially on the rod end with a snap-ring 2.
  • a rear section 4a of the piston rubber 4 is equipped with several proximity sensors P of the present invention
  • a piston O-ring 6 seals the piston body 5
  • Drilling mud DM is pumped through a pump body PB by reciprocating the piston body 5 in the liner 11.
  • the liner 11 is contained within a liner adapter 12 extending at one end from a pump body PB.
  • a liner gland nut 13 that secures the liner to the adapter engages the opposite end of the adapter. The gland nut is locked in place with a gland nut set screw 15.
  • the assembly illustrated in Figure 1 includes additional components found in a conventional piston and liner assembly.
  • the additional components include, on the drilling
  • an intermediate rod 14 extends from the piston rod 7 to a pony rod 20 which in turn extends to the pump motor (not illustrated).
  • a splashguard 16 extends about
  • a liner water flushing system supplies water from a supply line 17 to provide cleansing, lubricating water that flows through central openings in the
  • intermediate rod 14 is secured to the piston rod 7 with an intermediate rod clamp 21.
  • clamp 21 is held in place by a cap screw 22.
  • An O-ring 23 maintains a seal between the
  • the sensors P are capable of detecting the distance from the sensor to the encircling
  • the sensors P are positioned such that the sensors will translate toward the
  • Figure 1 illustrates proximity sensors P being carried or encased within the body of
  • the rubber 4 provides a sliding seal between the reciprocating piston body 5
  • the proximity sensors urges the proximity sensors P radially outwardly toward the surrounding liner 11. As the rear section 4a wears, the proximity sensors are permitted to move radially outwardly toward the surrounding liner.
  • the sensors are transducers that produce a signal indicative of the distance between the sensor and the surrounding liner. Electrical conductors with power and processing means at a separate processing location connect to the sensors. When the separation between a sensor and the surrounding liner falls below a predetermined value, a warning is initiated to advise the need for replacement of the seal.
  • the sensors P preferably have sensitivity capable of providing measurements in increments
  • the senor will preferably be capable of determining when the sensor, or a portion of the sensor, has come within 0.010 in. of the liner, which may indicate the occurrence of a maximum amount of permissible wear before the piston rubber must be changed.
  • An example of critical spacing would the 0.010 in. between the end of the proximity sensor P and the surrounding liner 11.
  • the processing means at the processing location may also evaluate the difference in spacing between the multiple transducers and the surrounding sleeve to determine if the seal wear is uniform or eccentric.
  • the information at the processing location may be transmitted through a suitable wireless transmission means to a remote site where the information will be evaluated.
  • the remote site may be a doghouse or control panel for the drilling rig.
  • Figures 3, 4 and 5 illustrate alternative forms of the piston rubber of the invention used to detect wear in the outer sliding circumferential area of the piston rubber.
  • the outer circumferential surface 30 of a piston rubber 31 is adapted to engage and slidingly seal with the internal surface of a piston sleeve in a manner similar to that of the piston rubber 4 illustrated in Figure 1.
  • probes 32, 33 and 34 are carried in the body of the piston rubber 31. Electrical conductors 35, 36 and 37, connect the probes respectively, to the processing location (not illustrated). As the outer surface 30 of the piston seal 31 wears away, the tips 32a, 33a, and 34a of the
  • probes will eventually make contact with the metal liner surrounding the packer rubber. The occurrence of physical contact by any one of the probes with the surrounding liner will be signaled by the completion of an electrical circuit.
  • Processing means at the processing location or remote site can determine eccentric wear if the probes engage the liner at different times.
  • a piston rubber 40 having an outer circumferential surface 41 is equipped with proximity sensors 42, 43, 44 and 45.
  • the proximity sensors are carried in the body of the piston rubber and are disposed at four locations around the periphery of the rubber seal. The proximity sensors determine the distance between the radially outermost
  • the processing equipment determines the rate, amount and location of seal wear by evaluating the distances between the sensors and the surrounding piston liner.
  • conductor 50 reduces the possibility of mechanical breakage of the conductor caused by the
  • Conductor 50 may be a resistive element that also indicates the circumferential
  • liner indicates the point at which contact with the liner occurred. This information may be

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Sealing Devices (AREA)

Abstract

Selon l'invention, pour contrôler la vitesse et la répartition de l'usure d'un joint, on place des transducteurs dans les joints coulissants. On surveille ainsi l'usure totale du joint ainsi que son usure non uniforme. Les valeurs relevées peuvent ensuite être transmises par radiocommunication à un point éloigné en vue de leur analyse. Les informations relatives à l'usure du joint peuvent se présenter sous la forme de valeurs de mesure discrètes ou elles peuvent être déduites de la réalisation ou de la rupture d'un circuit.
PCT/US2001/040984 2000-06-15 2001-06-15 Dispositif de controle de l'usure d'un joint de piston et appareil de radiocommunication distant WO2001096765A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001273582A AU2001273582A1 (en) 2000-06-15 2001-06-15 Piston seal wear monitor and remote wireless communicator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21158600P 2000-06-15 2000-06-15
US60/211,586 2000-06-15

Publications (2)

Publication Number Publication Date
WO2001096765A2 true WO2001096765A2 (fr) 2001-12-20
WO2001096765A3 WO2001096765A3 (fr) 2005-06-30

Family

ID=22787534

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/040984 WO2001096765A2 (fr) 2000-06-15 2001-06-15 Dispositif de controle de l'usure d'un joint de piston et appareil de radiocommunication distant

Country Status (2)

Country Link
AU (1) AU2001273582A1 (fr)
WO (1) WO2001096765A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013170418A1 (fr) * 2012-05-14 2013-11-21 山西潞安矿业(集团)有限责任公司 Système de réparation et de gestion pour composants d'étanchéité d'un compresseur chimique à charbon
US20180363698A1 (en) * 2017-06-19 2018-12-20 Fanuc Corporation Abnormal wearing detection device for seal members and rotor device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321045A (en) * 1966-04-11 1967-05-23 Bernard J Veilleux Brake lining sensing device
US5540448A (en) * 1992-02-25 1996-07-30 Heinzen; Ralph Seal with electrical conductor wear indicator
US6003872A (en) * 1993-12-30 1999-12-21 Nord; Klaus Juergen Method of monitoring a seal for correct operation, and monitoring device for carrying out the method
WO2000043592A1 (fr) * 1999-01-07 2000-07-27 Jocell Aktiebolag Bande d'etancheite
US6318147B1 (en) * 1998-07-31 2001-11-20 Hoerbiger Ventilwerke Gmbh Wear monitor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321045A (en) * 1966-04-11 1967-05-23 Bernard J Veilleux Brake lining sensing device
US5540448A (en) * 1992-02-25 1996-07-30 Heinzen; Ralph Seal with electrical conductor wear indicator
US6003872A (en) * 1993-12-30 1999-12-21 Nord; Klaus Juergen Method of monitoring a seal for correct operation, and monitoring device for carrying out the method
US6318147B1 (en) * 1998-07-31 2001-11-20 Hoerbiger Ventilwerke Gmbh Wear monitor
WO2000043592A1 (fr) * 1999-01-07 2000-07-27 Jocell Aktiebolag Bande d'etancheite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013170418A1 (fr) * 2012-05-14 2013-11-21 山西潞安矿业(集团)有限责任公司 Système de réparation et de gestion pour composants d'étanchéité d'un compresseur chimique à charbon
US20180363698A1 (en) * 2017-06-19 2018-12-20 Fanuc Corporation Abnormal wearing detection device for seal members and rotor device
US10520014B2 (en) * 2017-06-19 2019-12-31 Fanuc Corporation Abnormal wearing detection device for seal members and rotor device

Also Published As

Publication number Publication date
AU2001273582A1 (en) 2001-12-24
WO2001096765A3 (fr) 2005-06-30

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