GB2443913A - Valve unit with housing valve blocks and control block - Google Patents

Valve unit with housing valve blocks and control block Download PDF

Info

Publication number
GB2443913A
GB2443913A GB0720316A GB0720316A GB2443913A GB 2443913 A GB2443913 A GB 2443913A GB 0720316 A GB0720316 A GB 0720316A GB 0720316 A GB0720316 A GB 0720316A GB 2443913 A GB2443913 A GB 2443913A
Authority
GB
United Kingdom
Prior art keywords
valve
control
control block
block
housing
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.)
Granted
Application number
GB0720316A
Other versions
GB0720316D0 (en
GB2443913B (en
Inventor
Martin Reuter
Johannes Koenig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marco Systemanalyse und Entwicklung GmbH
Original Assignee
Marco Systemanalyse und Entwicklung GmbH
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 Marco Systemanalyse und Entwicklung GmbH filed Critical Marco Systemanalyse und Entwicklung GmbH
Publication of GB0720316D0 publication Critical patent/GB0720316D0/en
Publication of GB2443913A publication Critical patent/GB2443913A/en
Application granted granted Critical
Publication of GB2443913B publication Critical patent/GB2443913B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/003—Housing formed from a plurality of the same valve elements
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0832—Modular valves
    • F15B13/0835—Cartridge type valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0846—Electrical details
    • F15B13/086—Sensing means, e.g. pressure sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0878—Assembly of modular units
    • F15B13/0885—Assembly of modular units using valves combined with other components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0807—Manifolds
    • F15B13/0814—Monoblock manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0832—Modular valves
    • F15B13/0839—Stacked plate type valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure

Abstract

A valve unit has a block like valve housing 12 in which valve cartridges 14 are arranged with a plurality of valve blocks 16 being fastened to the valve housing. A control block 18 is provided for the control of the valves which is fastened to the valve housing and which has an input electrical control line and a plurality of output electromagnetic valve control lines, one to each valve block underneath a protective cover 22. The valve block contains pressure sensors (24,26 Fig.2) for gathering diagnostic pressure information e.g. filter blockage, on an external surface of the block which mate with ports on the housing, and/or a structure borne sound sensor (28). The sound sensor is used to determine the closure state of any of the valves.

Description

Marco Systemanalyse und Entwicklung Ml 0436PGB GmbH A valve unit The
present invention relates to a valve unit for underground mining having a block-like valve housing in which valve cartridges are arranged as well as having a plurality of valve blocks which are fastened next to one another at the valve housing and in which the electromagnetic actuation elements as well as pilot valves for a respective one valve are arranged.
In conventional electrohydraulic longwall controls, the control of the valves normally takes place separately from the valve block in which, for one or two respective solenoid valves, the electrical signal for the actuation of the electromagnet is supplied in a cable which is plugged in at a so-called valve strip which is fastened to a longwall support frame separate from the valve block. The electronic longwail control is then connected to the valve strip using a control cable to be able to control the individual valves.
It is the object of the invention to further develop a valve unit of the initially named kind such that it is more compact and the wiring of the valves is protected better.
This object is satisfied by the features of claim 1 and in particular in that a control block is provided next to the valve blocks at the valve housing, said control block having a control line at the input side and a plurality of valve control cabk.3 at the output side. An extremely compact assembly is provided by such a control block integrated into the valve block, with the cable length simultaneously being minimized. Since the control block is connected to the valve block or to the valve housing, the cables for the control of the individual valves can be made very short and can be laid in the region of the valve block so that they cannot be torn off by accident.
Advantageous embodiments of the invention are described in the following description, in the drawing and in the dependent claims.
In accordance with a first advantageous embodiment, the valve control cables which are located between the control block and the valve blocks can be covered by a protective section which can in particular be fastened to the valve housing. Such a protective section can advantageously be made of metal and be screwed to the valve block such that all valve cables are covered under the protective section. The protective section can simultaneously serve for the inscription of individual functions of the valve block.
A fastening of the control block to the valve housing by a screw connection permits an easy change.
In accordance with a further advantageous embodiment, at least one sensor can be provided in the control block, said sensor detecting a pressure or a flow or a structure-borne sound of the hydraulic medium. It is thus possible, for example, to integrate a structure-borne sound sensor in the form of a piezoelement into the control block, whereby the respective switching noise of the individual valves can be measured. Such a structure-borne noise sensor can be coupled to the electrohydraulic control which has a microcontroller so that a check can be made on the switching of a valve as to whether it has actually also switched.
Furthermore, the flow noise generated by a leakage current can also be detected by such a structure-borne sound sensor so that a determination can be made by the control, for example, whether a leakage current is present with closed valves if a valve leaks.
It is furthermore possible to integrate one or more pressure sensors into the control block so that information can be supplied to the support control as to whether the supply pressure is sufficient to withdraw a ram, for example. Furthermore, a plurality of diagnosis possibilities are provided when the supply pressure and/or the return pressure can be measured in the region of the valve unit. It is in particular also possible to draw a conclusion on the successful or unsuccessful course of a setting action from the time course of the pressure.
Since the sensors are integrated into the control block in accordance with the invention, no separate housing is required for the sensors. The wiring can be carried out inside one and the same block so that no additional wiring effort is required between the sensor and the control device, which is of great advantage under the rough conditions of mining.
In accordance with a further advantageous embodiment, the pressure sensor can be arranged at or in a wall of the control block such that the pressure sensor can be acted on with fluid via a bore provided in the valve housing. It is thus only necessary to provide a bore in the valve housing which connects a fluid conducting passage to the outer wall of the valve housing. Since the valve block is pressed onto this outer wall of the valve housing, for example by a screw connection, the pressure sensor can be acted on by system pressure, with the interface between the valve housing and the control block being able to be sealed by a sealing ring.
It is advantageous for an electronic control switch to be additionally provided in the control block to control the sensors.
The present invention will be described in the following purely by way of example with reference to an advantageous embodiment and to the enclosed drawings. There are shown: Fig. 1 a perspective view of a valve unit; Fig. 2 a schematic plan of the valve unit of Fig. 1; Fig. 3A a signal of a structure-borne sound sensor on the switching of a valve; and Fig. 3B a flow noise recorded by the structure-borne sound sensor.
The valve unit 10 shown in Fig. 1 serves for the control of longwall support frames in underground mining and has a block-like valve housing 12. A plurality of valve cartridges 14 are screwed into the valve housing 12 in a known manner, with the individual valve cartridges 14 being arranged parallel to one another.
Five valve blocks 16 are arranged next to one another at the upper side of the valve housing 12 -in the embodiment shown -with pilot valves as well as electromagnets for the actuation of the individual valve being provided in each valve block 16.
As Fig. 1 further shows, a control block 18 is provided to the left of the valve blocks 16 at the valve housing 12 and its dimensions substantially correspond to those of the valve blocks 16, with the control block 18 being screwed to the valve housing 12 by two screws 20. As Fig. 1 shows, the control block 18 does not project beyond the outer dimensions of the valve housing 12.
An electric control line (not shown in Fig. 1) is provided at the rear side of the control block 18 at the input side and serves for the connection to the associated electrohydraulic control. A total of five control cables, which are each connected to a valve 16, are led out of the control block at the front side of the control block 18. However, these control cables cannot be recognized in Fig. 1 since they are arranged behind a U-shaped protective section 22 which is screwed to the valve housing 12 by means of two screws 24. The protective section 22 is made of metal and has different switch symbols at its front side which designate the switch functions of the individual valves.
As Fig. 1 shows, the total arrangement is extremely compact, with no cables being freely accessible with the exception of the control cable guided out of the control block 18 at the rear side.
Fig. 2 shows a schematic plan of the valve unit 10 which is shown in Fig. 1 and is understandable on its own due to the generally known symbols and will therefore not be explained in more detail. The schematic plan additionally illustrates the arrangement of the control block 18 directly contacting a wall of the valve housing 12, with the interface between both modules being designated by the reference symbol G. Fig. 2 furthermore shows that two pressure sensors 24 and 26 as well as a structure-borne sound sensor 28 are integrated into the hydraulic block 18. The sensors are arranged at the interface 0 between the control block 18 and the valve housing 12, with the two pressure sensors 24 and 26 being connected to pressure conducting lines inside the valve housing via two bores 25 and 27 provided in the valve housing 12. The pressure sensors are arranged at the interface G of the control block 18 such that the sensors are acted on by pressure solely by screwing the control block 18 to the valve housing 12. A respective 0 ring is only provided for sealing in the region of the pressure sensors.
Valuable information on the pressure conditions can be obtained with the help of the two pressure sensors 24 and 26 and can then be forwarded to a central control. If the supply pressure is, for example, too low, a ram may not be withdrawn since the pressure to set it again would not be present. If the supply pressure drops unusually during a function, it can be concluded from this that the filter in front of the hydraulic system is probably clogged. If, however, the pressure only drops at the start of a function, the filter for the pilot control is probably clogged in the pressure sensor arrangement shown in Fig. 2. Valuable diagnostic information can thus be deduced from the different pressures at different times and in particular from the time development of the pressure.
Due to the tight connection between the control block 18 and the valve housing 12, a noise generated in a respective valve can be measured with the help of the structure-borne sound sensor 28 provided at the interface G, with a check being able to be made by the electronic control through the measured sound signal whether the valve is in a proper state or not. If is thus possible, for example, to measure the switching noise on a switching of a valve and to thereby check whether the valve has switched properly. Fig. 3A shows an output signal of the structure-borne noise sensor on the switching on, holding and switching off of a valve. If a valve has jammed, for example, this could be detected by the structure-borne sound sensor 28.
It is furthermore possible in accordance with the invention, to measure a flow noise within a valve or the valve housing and thereby to check whether a valve is leaking or not. Fig. 3B shows a sensor signal in a state in which a valve is open. It can thus be determined in a simple manner by such an output signal if a valve is leaking since then a noise spectrum corresponding to Fig. 3B is recorded even though the valve should actually be closed.

Claims (1)

  1. Marco Systemanalyse und Entwicklung Ml 0436PGB GmbH Claims 1. A valve
    unit (10) for underground mining, comprising a block-like valve housing (12) in which valve cartridges (14) are arranged; and a plurality of valve blocks (16) fastened next to one another at the valve housing, wherein a control block (18) is provided at the valve housing (12) next to the valve blocks (16) and has a control line (30) at the input side and a plurality of valve control cables (32) at the output side, characterized in that at least one pressure sensor and/or structure-borne sound sensor (24, 26, 28) is provided in the control block (18) 2. A valve unit in accordance with claim 1, characterized in that the valve control cables (32) are covered by a protective section or cover (24) which is in particular fastened to the valve housing (12).
    3. A valve unit in accordance with claim 1 or claim 2, characterized in that the control block (18) is screwed to the valve housing (12).
    4. A valve unit in accordance with at least one of the preceding claims, characterized in that at least one pressure sensor (24, 26) is provided in the control block (18) and is arranged on a wall of the control block (18) such that the pressure sensor can be acted on by fluid via a bore (25, 27) provided in the valve housing (12).
    5. A valve unit in accordance with at least one of the preceding claims, characterized in that an electronic control switch (34) is provided in the control block (18).
    6. A method for the monitoring of a valve, in particular of a valve unit in accordance with at least one of the preceding claims 1 -5, characterized in that a noise generated in the valve is measured by a structure-borne sound sensor; and in that a check is made by the measured signal as to whether the valve is in a proper state.
    7. A method in accordance with claim 6, characterized in that a switching noise of the valve is measured and a check is thereby made whether the valve has switched properly.
    9. A method in accordance with claim 6 or claim 7, characterized in that a flow noise of the valve is measured and a check is thereby made of whether the valve is leaking.
GB0720316A 2006-11-14 2007-10-17 A valve unit Expired - Fee Related GB2443913B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006053628A DE102006053628A1 (en) 2006-11-14 2006-11-14 valve unit

Publications (3)

Publication Number Publication Date
GB0720316D0 GB0720316D0 (en) 2007-11-28
GB2443913A true GB2443913A (en) 2008-05-21
GB2443913B GB2443913B (en) 2009-08-26

Family

ID=38813992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0720316A Expired - Fee Related GB2443913B (en) 2006-11-14 2007-10-17 A valve unit

Country Status (5)

Country Link
CN (1) CN101182892A (en)
DE (1) DE102006053628A1 (en)
GB (1) GB2443913B (en)
PL (1) PL213004B1 (en)
RU (1) RU2362017C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392666A (en) * 2010-07-05 2012-03-28 玛珂系统分析和开发有限公司 Protective profile
RU2691784C2 (en) * 2015-04-01 2019-06-18 Сандвик Интеллекчуал Проперти Аб Control unit for mining machine
RU2713288C1 (en) * 2018-12-21 2020-02-04 Акционерное Общество "Копейский Машиностроительный Завод" Mining machine actuator control device, mining machine, mining machine control system and data medium

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DE202014104599U1 (en) * 2014-09-25 2014-10-09 Bürkert Werke GmbH Modular valve system
EP3067516A1 (en) * 2015-03-13 2016-09-14 Caterpillar Global Mining Europe GmbH Hydraulic assembly for a mining system
PL71744Y1 (en) * 2018-03-29 2021-01-11 Centrum Hydrauliki Doh Spolka Z Ograniczona Odpowiedzialnoscia Control panel
RU189465U1 (en) * 2018-12-06 2019-05-23 Общество с ограниченной ответственностью "Научно-производственное предприятие "Автоматика" ELECTRO-HYDRAULIC DISTRIBUTION UNIT
CN109915193B (en) * 2019-04-02 2020-12-22 北京天地玛珂电液控制系统有限公司 Hydraulic support control system
EP4212741A1 (en) * 2022-01-18 2023-07-19 Asco Numatics GmbH Device and method for controlling and regulating fluid streams

Citations (1)

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US20020112765A1 (en) * 2001-02-16 2002-08-22 Dieter Frank Control device for pressurized fluids

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DE3634349C1 (en) * 1986-10-09 1987-05-21 Daimler Benz Ag Assembly of several directional valves that can be switched electromagnetically independently
DE3742830C2 (en) * 1987-12-17 1995-11-16 Teves Gmbh Alfred Valve block assembly
JP3355775B2 (en) * 1994-03-10 2002-12-09 アイシン精機株式会社 Solenoid valve unit
DE19619968A1 (en) * 1996-05-17 1997-11-20 Teves Gmbh Alfred Pressure regulator esp for electrohydraulic and/or electropneumatic automotive braking systems
JPH10132122A (en) * 1996-10-25 1998-05-22 Aisin Seiki Co Ltd Solenoid valve unit
DE19940696A1 (en) * 1999-04-15 2000-10-19 Continental Teves Ag & Co Ohg Coil mounting for magnetically operated valves of motor vehicle brake control system
DE10063471A1 (en) * 2000-12-19 2002-06-20 Claas Industrietechnik Gmbh Device for making contact between adjusting device and electrical connections for functional support like a hydraulic valve block, makes the adjusting device protrude from the functional support with a magnetic coil.
DE10328221B4 (en) * 2003-06-24 2006-06-14 Sauer-Danfoss Aps Electromagnetic valve actuator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020112765A1 (en) * 2001-02-16 2002-08-22 Dieter Frank Control device for pressurized fluids

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392666A (en) * 2010-07-05 2012-03-28 玛珂系统分析和开发有限公司 Protective profile
CN102392666B (en) * 2010-07-05 2014-06-18 玛珂系统分析和开发有限公司 Protective profile
RU2691784C2 (en) * 2015-04-01 2019-06-18 Сандвик Интеллекчуал Проперти Аб Control unit for mining machine
RU2713288C1 (en) * 2018-12-21 2020-02-04 Акционерное Общество "Копейский Машиностроительный Завод" Mining machine actuator control device, mining machine, mining machine control system and data medium

Also Published As

Publication number Publication date
GB0720316D0 (en) 2007-11-28
RU2362017C1 (en) 2009-07-20
RU2007142003A (en) 2009-05-20
DE102006053628A1 (en) 2008-05-15
PL213004B1 (en) 2012-12-31
GB2443913B (en) 2009-08-26
CN101182892A (en) 2008-05-21
PL383360A1 (en) 2008-05-26

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20181017