MTS 286-30 User Manual

Model 286.30 Pore Pressure Intensifier Product Information

015-022-701 B

Trademark information MTS and TestWare are registered trademarks of MTS Systems Corporation.

Contact information MTS Systems Corporation

14000 Technology Drive Eden Prairie, Minnesota 55344-2290 USA Toll Free Phone: 800-328-2255 (within the U.S. or Canada) Phone: 952-937-4000 (outside the U.S. or Canada) Fax: 952-937-4515 E-mail: info@mts.com http://www.mts.com

Publication information

Manual Part Number Publication Date

015-022-701 A January 1992 015-022-701 B October 2007

Contents

Preface 5

About This Manual 6 Conventions 7 Technical Support 8

Introduction 13

Overview of Typical Pore Pressure Intensifier System 14 Description of Major Components 15 Specifications and Dimensions 17

Operation 19

Functions of the Front Panel Controls 20 High Pressure Precaution 22 High Temperature Precaution 22 Pore Pressure System Operation Considerations 23

Operating in Conjunction with a Confining Pressure System 23 Closed-loop Control Modes Used for Pressurizing Pore Fluid 24 Typical Calibration of Control Parameters 25 Effects of Thermal Expansion of Pore Fluid 26 Use of Error Detectors and Limit Detectors While Pressurizing 27 Effects of Air in the System, Need to Expel 28

Operating Procedures 29

Filling the Reservoir 30 Filling the Pressure Intensifier 32 Filling the Specimen’s Pores with Pore Fluid 35 Heating the Triaxial Cell 39 Pressurizing and Depressurizing the Pore Fluid 40 Draining the Reservoir to an External Location 42

286.30 Pressure Intensifier Contents

Contents

286.30 Pressure Intensifier

Preface

Safety first! Before you attempt to use your MTS equipment in your test system, read and

Contents About This Manual 6

understand the Safety manual. Like an automobile, your test system is very useful—but if misused, it is capable of deadly force. You should not be afraid of your test system, but you should always maintain a healthy respect for it.

Improper installation, operation, or maintenance of MTS equipment in your test system can result in hazardous conditions that can cause severe personal injury or death, and damage to your equipment and specimen. Again, read and understand the Safety manual before you continue. It is very important that you remain aware of hazards that apply to your test system.

Conventions 7 Technical Support 8

286.30 Pressure Intensifier Contents

About This Manual

Purpose This manual provides detailed information about the Model 286.30 Pore Pressure

Intensifier. The information includes an overview and operation.

Summary This manual includes the following sections.

Introduction This section provides an overview of typical confining pressure control system, a

description of major components, and specifications.

Operation This section contains procedures for operations involving the flow and

pressurization of confining fluid.

Contents

286.30 Pressure Intensifier

Conventions

The following paragraphs describe some of the conventions that are used in your MTS manuals.

Hazard conventions Hazard notices are embedded in this manual and contain safety information that

is specific to the task to be performed. Hazard notices immediately precede the step or procedure that may lead to an associated hazard. Read all hazard notices carefully and follow the directions that are given. Three different levels of hazard notices may appear in your manuals. Following are examples of all three levels.

Note For general safety information, see the Safety manual included with your

system.

Danger notices Danger notices indicate the presence of a hazard which will cause severe personal

injury, death, or substantial property damage if the danger is ignored.

Warning notices Warning notices indicate the presence of a hazard which can cause severe

personal injury, death, or substantial property damage if the warning is ignored.

Caution notices Caution notices indicate the presence of a hazard which will or can cause minor

personal injury, cause minor equipment damage, or endanger test integrity if the caution is ignored.

Other conventions Other conventions used in your manuals are described below:

Notes Notes provide additional information about operating your system or highlight

easily overlooked items.

Special terms The first occurrence of special terms is shown in italics.

Illustrations Illustrations appear in this manual to clarify text. It is important for you to be

aware that these illustrations are examples only and do not necessarily represent your actual system configuration, test application, or software.

Electronic manual

conventions

This manual is available as an electronic document in the Portable Document File (PDF) format. It can be viewed on any computer that has Adobe Acrobat Reader installed.

Hypertext links The electronic document has many hypertext links displayed in a blue font. All

blue words in the body text, along with all contents entries and index page numbers are hypertext links. When you click a hypertext link, the application jumps to the corresponding topic.

286.30 Pressure Intensifier Contents

Technical Support

Start with your

manuals

Technical support

numbers

MTS web site

www.mts.com

E-mail: General information:info@mts.com

Telephone HELPLine 800-328-2255

The manuals supplied by MTS provide most of the information you will need to use and maintain your equipment. If your equipment includes MTS software, you should look for README files for additional product information.

If you cannot find answers to your technical questions from these sources, you can use the internet, telephone, or fax to contact MTS for assistance. You can also fill out the Problem Submittal Form that is available on the MTS web site and in the back of many MTS manuals that are distributed in paper form.

MTS provides a full range of support services after your system is installed. If you have any questions about a system or product, contact MTS in one of the following ways.

The MTS web site gives you access to our technical support staff by means of a Problem Submittal Form and a Technical Support link.

• Problem Submittal Form:

www.mts.com > Contact MTS > Problem Submittal Form

• Technical Support:

www.mts.com > Contact Us > Service & Technical Support

Weekdays 7:00 A.M. to 6:00 P.M., Central Time

Fax 952-937-4515

Please include an MTS contact name if possible.

Contents

286.30 Pressure Intensifier

Technical Support

Before you

contact MTS

Know your site number

and system number

Know information from

prior technical

assistance

MTS can help you more efficiently if you have the following information available when you contact us for support.

The site number contains your company number and identifies your equipment type (material testing, simulation, and so forth). The number is usually written on a label on your MTS equipment before the system leaves MTS. If you do not have or do not know your MTS site number, contact your MTS sales engineer.

Example site number: 571167

When you have more than one MTS system, the system project number identifies which system you are calling about. You can find your project number in the papers sent to you when you ordered your system.

Example system project number: US1.30123

If you have contacted MTS about this problem before, we can recall your file. You will need to tell us the:

• MTS notification number

• Name of the person who helped you

Identify the problem Describe the problem you are experiencing and know the answers to the

following questions.

Know relevant computer

information

• How long has the problem been occurring?

• Can you reproduce the problem?

• Were any hardware or software changes made to the system before the

problem started?

• What are the model and serial numbers of the suspect equipment?

If you are experiencing a computer problem, have the following information available.

• Manufacturer ’s name and model number

• Operating software type and service patch information. Examples:

– Windows XP Service Pack 1 (SP1) – Windows 2000 Service Pack 3 (SP3)

• Amount of system memory. Example: 512 MB of RAM.

• Amount of free space on the hard drive in which the application resides.

Example: 11.2 GB free space, or 72% free space.

• Current status of hard-drive fragmentation. Example: 3% total

fragmentation.

286.30 Pressure Intensifier Contents

Technical Support

Know relevant software

information

If you contact MTS

by phone

For MTS software application problems, have the following information available.

• TestWorks 4 version; for example Version 4.09

• Names of other non-MTS applications that are running on your computer,

such as screen savers, keyboard enhancers, print spoolers, and so forth

Your call will be registered by a HELPLine agent if you are calling within the United States or Canada. Before connecting you with a technical support specialist, your agent will ask you for your site number, name, company, company address, and the phone number where you can normally be reached.

Identify system type To assist your HELPLine agent with connecting you to the most qualified

technical support specialist available, identify your system as one of the following types:

• • Electromechanical materials test system

• • Hydromechanical materials test system

• • Vehicles test system

• • Vehicles component test system

• • Aero test system

Be prepared to

troubleshoot

Prepare yourself for troubleshooting while on the phone.

• Call from a telephone close to the system so that you can try implementing

suggestions made over the phone.

• Have the original operating and application software media available.

• If you are not familiar with all aspects of the equipment operation, have an

experienced user nearby to assist you.

Contents

286.30 Pressure Intensifier

Technical Support

Write down relevant

information

After you call MTS logs and tracks all calls to ensure that you receive assistance and that action

Problem Submittal

Form in MTS manuals

Prepare yourself in case we need to call you back.

• Remember to ask for the notification number.

• Record the name of the person who helped you.

• Write down any specific instructions to be followed, such as data recording

or performance monitoring.

is taken regarding your problem or request. If you have questions about the status of your problem or have additional information to report, please contact MTS again.

In addition to the Problem Submittal Form on the MTS web site, there is also a paper version of this form (postage paid) in the back of many MTS manuals. Use this form to forward problems you are experiencing with your MTS equipment, whether it be software, hardware, manuals, or service. This form includes check boxes that allow you to select when you expect us to respond to your input. We guarantee a timely response—your feedback is important to us.

286.30 Pressure Intensifier Contents

Technical Support

Contents

286.30 Pressure Intensifier

Introduction

815

Fluid Reservoir

Control Panel

This section describes the Model 286.30 Pore Pressure Intensifier, its role in the typical rock mechanics test system, and other system components typically used with the Pore Pressure Intensifier. Specifications and dimensions are also included.

The Model 286.30 Pore Pressure Intensifier is designed to provide a source of fluid at pressures suitable for use in applying pore pressure to a rock specimen in a triaxial cell. The PPI is used to fill the specimen’s pores with pore fluid, pressurize the fluid, and control the pressure.

Some model versions produce pore pressures up to 20,000 psi (140 MPa). The maximum fluid volume that can flow during one stroke of the PPI’s internal

pressure intensifier can be as high as 80 cubic inches (1300 cm

“Specifications and Dimensions” on page 17 for specifications for all models.

). See

286.30 Pressure Intensifier Introduction

Overview of Typical Pore Pressure Intensifier System

Pore Pressure

Instensifier

(PPI)

815

Triaxial

Cell

High

Pressure

Hoses

Typical Load Frame

(rear view)

Pressure

Return

*Feedback Signals

Electronic Controller

Equipment

Hydraulic

Power

Supply

Displacement*

Pressure*

286.30_001

Overview of Typical Pore Pressure Intensifier System

The major system components typically used with the Pore Pressure Intensifier are shown below.

Introduction

As shown in the figure, a separate hydraulic power supply acts as the primary power source for the Pore Pressure Intensifier. Hydraulic fluid pressures up to 21 MPa (3,000 psi) are translated into pore fluid pressures up to 140 MPa (20,000 psi) under servo control provided by separate electronic controller equipment.

Pressure and displacement transducers in the PPI provide signals proportional to their respective variables, enabling the external electronic controller equipment to measure these variables and to control either the pressure produced by the PPI, or the linear displacement of the pressure intensifier’s piston relative to a fixed reference.

While the displacement transducer output signal is proportional to the displacement of the pressure intensifier’s piston, relative to a reference point, the electronic control equipment associated with this transducer is usually calibrated in units of displacement.

286.30 Pressure Intensifier

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