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
  • G01M99/00—Subject matter not provided for in other groups of this subclass
  • G01M99/002—Thermal testing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
  • B01L1/00—Enclosures; Chambers
  • B01L1/02—Air-pressure chambers; Air-locks therefor
  • B01L1/025—Environmental chambers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
  • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
  • B01L2200/02—Adapting objects or devices to another
  • B01L2200/028—Modular arrangements

Definitions

• Installation for testing for external influences and the method of its use are intended for testing various products and research of biological objects, electronic products under the influence of temperature, moisture, pressure, gas, aggressive environment and their combinations. Such tests are carried out during the production of products and their verification of compliance with the established requirements for resistance to climatic and other external influences, as well as to study the properties of these objects under external influences.
• Using the claimed setup allows you to determine the dependence of the characteristics and parameters of objects under external influences without moving the objects of research (measurements) into a special test chamber after examining their properties under normal conditions without changing their initial position, which is sometimes required for the purity of the experiment and proximity to the environment .
• the climate chamber consists of an assembly insulating block and contains an air conditioner that creates the necessary climatic conditions inside the chamber.
• the insulation block is assembled from polyurethane sandwich panels or polystyrene foam blocks, while the elements can be fastened together using a spike and a groove.
• the insulation block is assembled and disassembled inside the portal and is "built up" over the test object placed in the portal. After testing, the insulation block is disassembled into its constituent elements.
• This device will allow testing large objects that do not fit in stationary chambers, but it does not solve the problem of testing within the framework of a single device that does not contain air conditioning (exposure device).
• a device for thermal tests and a method for conducting thermal tests according to patent EP 2322908 "Thermal testing device and method".
• the technical result of this invention is the ability to fully provide thermal testing of individual parts of the test sample (for example, parts of the aircraft structure). The result is ensured by the use of a flexible insulating thermal casing in the device, namely, a multilayer fabric "shroud", which is worn on the test object or part thereof.
• the disadvantage of this technical solution is the impossibility of ensuring absolute tightness of the housing, the inability to ensure the immobility of the tested device and the hard life support systems and / or paths supplied to it.
• these designs Compared to stationary climatic cameras (test installations), these designs have more capabilities and allow testing with larger objects than those that are used commonly.
• they have their limitations, in particular, they do not ensure the maintenance of very high and very low temperatures (above +50 and below -50 degrees Celsius) due to the design features due to the difficulties of sealing, and are not applicable for testing in aggressive environments .
• rigid rigid and / or semi-rigid paths for example, rigid / semi-rigid coaxial paths, waveguides and glass tubes
• rigid / semi-rigid coaxial paths, waveguides and glass tubes which must be rigidly fixed and whose length should not vary depending on the need for escheniya object in a test climate chamber (as occurs in the case of glass tubes through which the supply / operation of the life support system of a biological object or, for example, in the case of microwave object when the phase stability of the (electrical length) in the tests / measurements should be provided).
• the claimed inventions are aimed at solving the problem of creating a test installation for external impact testing with a removable part of a wide-purpose camera, which allows initially in normal working conditions convenient for research (sitting at a table with communications of any complexity and a large volume of instrumentation) necessary studies and measurements (control measurements), after which, without changing the position of the object and communications due to the test room
• the object in the camera with a removable portion to create the required volume required external influences heat, cold, moisture, pressure, etc.
• the solution allows you to expand the possibilities of using the same installation for testing objects of various sizes (it is not necessary to change the entire installation, it is enough to replace the removable part of the camera with a similar, but necessary size, corresponding to the required range of sizes of the test objects), implement a method for conducting these tests.
• the use of interchangeable removable parts of the camera reduces material consumption, because instead of several installations, one installation with a set of removable parts of cameras of the desired size or shape is required.
• the device makes it possible to change the volume of the working part of the camera, including changing the volume of even the removable part of the camera, and in addition to normalizing the test conditions for stationary objects, it allows to reduce the energy consumption due to the fact that external pressure is not exposed to only necessary and sufficient to accommodate the test object.
• An additional result of the claimed inventions is to reduce the time of testing under external influences due to the exclusion of operations associated with the need to move the object, reconnect wires, paths and / or life support systems to it, reduce the time the installation goes into operation (for example, the less the additional volume the faster the required temperature is established — low or high relative to the ambient temperature).
• the solution allows you to achieve the purity of the experiment when comparing the parameters of the object before external exposure and after exposure, leaving the object motionless in all three states. Absence of necessity disconnect the wires and / or paths and / or tubes during the transition to tests for external influences significantly reduces the test time, which allows us to consider the claimed solution is very effective in many respects.
• the inventive design of the installation for testing for external influences with a removable part of the camera is an installation for testing for external influences, consisting of a table with a tabletop, an external impact unit, a measurement automation unit, a camera (the listed features are common with the signs of known technical solutions - of the majority of test installations for external influences), while this installation is distinguished from others by the design of the chamber, which consists of two parts - from a stationary and a chamber positioned on the table top of the table, and a removable portion of the chamber in a semi-closed volume open on one side, with a removable alignment end portion and the stationary portion of the chamber on a countertop
• the stationary part of the chamber consists of a grid
• the grill is located in a window carved into the table top.
• an air duct is connected to the grate to influence the object.
• the research object is fixed on the grill (2), a removable part of the chamber (5) is placed on top of the object, equipped with a perimeter elastic sealing system with a response system (contour / circuits) of the seal on the table surface in order to seal the junction of the seal of the removable part of the chamber (4) and stationary parts of the chamber around the perimeter of the seal (3).
• Under the worktop are units that provide work units (6, 7), in particular, units for providing external influences (heat, cold, steam, gases, etc.) and, possibly, a test automation system.
• the necessary wires, paths, tubes, supplied to the object pass between the elastic seals of the removable and stationary parts, providing a sealing chamber.
• the claimed solution in the form of a design device for a test setup with a removable part of the camera can be implemented in two versions - with a change in the working volume of the camera due to a change in the actual volume of the removable part of the camera and / or with a change in the working volume of the camera due to the use of an insert in the camera that changes the working volume cameras.
• the liner is made smaller than the removable camera, make it, for example, of metal (aluminum or stainless steel) or other material resistant to external influences, and provide it with an additional layer of thermal insulation, placed between the outer layer of the liner and the inner layer of the removable part of the camera, which allows not only to reduce the working volume of the chamber, but also to provide additional thermal insulation, and, consequently, faster access to the required mode of external influences and reduction of energy consumption.
• the liner can generally be made only in the form of a polyurethane foam liner (without a metal part) with a recess of the required shape and volume.
• test setup In addition to the two design options for the test setup, two corresponding test methods are claimed using these designs, representing a procedure for carrying out actions on the object of testing for external influences in the declared test facilities.
• the first is characterized by the fact that the test object
• FIG. 1 shows a General view of the test setup in preparation for testing without installed removable part of the camera.
• FIG. 2. shows a general view of the installation with the removable part of the camera installed.
• FIG. 3. shows a General view of the installation with a removable part of the camera and the liner in the context.
• the claimed solution for the device of two installation options for testing for external influences can be implemented as follows.
• An installation consisting of a table with a tabletop, an external impact support unit, a measurement automation unit, a camera with removable and stationary parts, in both cases, is equipped with at least one or several removable parts of the camera of different sizes and / or different shapes (5) with the ability to place them on the surface of the table (automatically or manually).
• the removable part of the chamber along the perimeter of the elastic seal passing in the lower part of the chamber is combined with the corresponding elastic seal of the stationary part of the chamber, sealing, and the parts are pulled together if necessary, for example, with locks (8) (a special case in the form of latches), which can be located around the perimeter or on opposite sides.
• FIG. 2 shows a removable part of the chamber (5) connected to a stationary part for testing.
• the removable part of the chamber like other well-known cameras of other manufacturers, is a two-layer metal structure (using aluminum and / or stainless steel), the gap between the layers is filled with a layer of thermal insulation (for example, of foamed polyurethane), sufficient to provide the necessary external impact - heat preservation, cold.
• the shape of the removable part of the camera can be any (hemisphere, cylinder, rectangular parallelepiped, truncated pyramid, etc.), and it is determined only by the test requirements and the shape of the test object, as well as size.
• Initial testing of the object can be carried out under normal environmental conditions when it is placed (fixed) on the surface of the countertop (1) without attaching a removable part of the camera (5).
• the removable part of the camera (5) is placed on the stationary part of the camera, external influences on the object are carried out in the chamber volume using units of the external impact unit (6, 7), and the results (parameters) of measurements are recorded automatically by the measurement automation unit under various conditions created by the aggregates of the block of external influences (6, 7) without moving the test object, including after taking measurements under normal conditions, and after taking measurements under artificially created conditions.
• the design of the installation for testing for external influences in order to change the working volume of the chamber is completed with not only at least one removable part of the chamber (5), but also with at least one insert (9) equipped with an insulating gasket placed between the removable part of the camera and with the possibility of their joint location on the stationary part of the camera (automatically or manually), with the further connection of the parts of the elastic seal loops (3) and (4), and sealing the connection, if necessary
• additional parts of the chamber can be pulled together by locks (8) (for example, in the form of latches or clips of known designs) around the perimeter.
• locks (8) for example, in the form of latches or clips of known designs
• Figure 3 shows an example of a removable chamber for testing when the volume of the chamber changes due to the insert, and the internal working volume of the camera changes due to the use of one of the inserts of the set of inserts of the set of inserts (9) of different volume and shape in accordance with the requirements and size of the test object.
• the insert (9) can be of any geometric shape (including one different from the shape of the chamber), it is provided with a heat-insulating gasket (10), for example, of foamed polyurethane filling the space between the insert and the inner wall of the chamber, while the inner surface of the gasket repeats the shape of the outer surface of the liner, adjacent to close to it, and the outer surface of the gasket follows the shape of the inner surface of the chamber, also adjacent to it closely.
• a heat-insulating gasket (10) for example, of foamed polyurethane filling the space between the insert and the inner wall of the chamber, while the inner surface of the gasket repeats the shape of the outer surface of the liner, adjacent to close to it
• the gasket horizontally adjoins the surface of the grating, and the lower edge of the liner adjoins the surface of the grate (it can also be provided with cutouts for communications if necessary) or slightly higher than the surface of the grating — higher than the height of the communications brought to the object, supported by the weight of the elastic gasket or supported by the stand appropriate height.
• insert the insert of the required size with the appropriate gasket To optimize the test process in the chamber to change its volume, insert the insert of the required size with the appropriate gasket.
• the presence of gaskets provides additional thermal insulation, which is important when testing at ultra-low and ultra-high temperatures.
• the elastic seal can be made of silicone.
• the test object does not move relative to the initial position, in which, for example, measurements were made of its parameters under normal conditions;
• the volume of the removable part of the camera or insert is set in accordance with the size of the investigated object
• the size of the removable part of the chamber, its seal and the counter sealing system (sealing) are selected according to the size of the test object with a constant perimeter of the seal;
• the object remains in its original position (without moving).
• the design of the liner with a gasket can have independent significance, be used both with climatic / test installations known from the prior art, and in conjunction with any of the embodiments of the invention.
• the test object When implementing variants of the methods of testing for external influences using the claimed devices, the test object is installed on the window grill (2) of the stationary part of the chamber in the countertop (1), the necessary communications are connected to it, and measurements and testing of the object are carried out in the initial normal conditions.
• the object is covered with a removable part of the chamber (5) of the required size, the perimeter of the lattice of the stationary part of the chamber is sealed by connecting the seals (3) and (4), for example, additionally using mechanical clamps, latches (8) and / or in another known manner, then they include aggregates of the block of external influences (6, 7), providing the mode of external influences, and a program for automatic control and registration of the test process.
• the removable part of the camera (5) After conducting tests in the mode of external influences, the removable part of the camera (5) is removed, and the object is again in its original position and under normal conditions, the object and communications remain motionless in all three states (before the tests, during and after them).
• the removable part of the chamber is a two-layer metal “cap” (made of stainless steel or aluminum), the space between the metal layers is filled with foamed polyurethane foam or other suitable insulating material, the shape of the edge of the counter part of the removable part of the chamber coincides with the shape of the counter part of the stationary part of the chamber, both parts are provided a system of elastic seals around the perimeter (for example, two-layer) to provide sealing and passage of wires, paths, tubes, depending on the test object tany.
• the sealing contour system (3) and (4) according to the claimed inventions is standard and represents a double contour of a flexible elastic seal on the camera side and on the table side, for example, made of silicone, and its thickness should be sufficient to create a good seal taking into account the thickness of between communication sealing layers, for example, if the thickness (diameter) of communications is less than 10 mm, then the thickness of the seal should be about 10 mm on each side, they do not make special recesses for communications. If the thickness (diameter) of communications is more than 10 mm, then the thickness of the seal must be more than 10 mm on each side, and with very thick paths make special notches for communications in order to ensure a more tight fit of the seal.
• the seal material may vary depending on the type of test and meet the requirements of elasticity at low or high temperatures, be resistant to aggressive environments.
• the seal passing along the end face of the removable part of the chamber and the seal of the stationary part can form a cage fastening them together hermetically.
• the stationary part of the chamber has a grid mounted in the countertop of the desktop.
• the grill has a load capacity corresponding to the weight of the test object.
• the table can also be equipped with a frame, possibly on wheels, on which the indicated aggregates of the impact support units (6, 7) are installed, which ensure the operation of the installation (in particular, heat, cold, steam, gas, and other aggregates are used). )) and the unit for automation of measurements and testing.
• the lower part of the table with the frame can be provided with grilles for safety reasons.
• Installation for testing for external influences with a removable part of the chamber can be made of known materials, by known methods based on a conventional laboratory table with a worktop (1), for example, steel.
• the installation can be used for research and testing of microwave devices with high requirements for phase characteristics during their production, for example, in the production of transceiver modules of active phased arrays (AFAR), as well as for the study and study of some biological objects for which movement is unacceptable to place them in conditions of external influences, disconnection from life support systems is unacceptable.
• Tests of the installation and methods in accordance with the claimed inventions showed stability electrical path lengths during testing in the temperature range from -70 degrees Celsius to +180 degrees Celsius. The maximum temperature deviation from the set value in the steady state was 1 degree Celsius.
• the unevenness of heating or cooling, the rate of temperature change, power consumption, noise level when using the installation are determined by the characteristics of the unit's units to ensure external influences.
• the tests carried out confirm the fulfillment of the task, which indicates the conformity of the claimed technical solution with the patentability requirement “industrial applicability”.

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• Health & Medical Sciences (AREA)
• Clinical Laboratory Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
• Studio Devices (AREA)

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Cited By (5)

Citations (6)

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• 2012
  • 2012-07-04 RU RU2012127756/28A patent/RU2516023C2/ru not_active IP Right Cessation
• 2013
  • 2013-07-04 WO PCT/RU2013/000565 patent/WO2014007681A1/fr not_active Ceased

Patent Citations (6)

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