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
  • G01M15/00—Testing of engines
  • G01M15/04—Testing internal-combustion engines
  • G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
  • G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
  • G01M15/00—Testing of engines
  • G01M15/02—Details or accessories of testing apparatus
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N1/00—Sampling; Preparing specimens for investigation
  • G01N1/02—Devices for withdrawing samples
  • G01N1/22—Devices for withdrawing samples in the gaseous state
  • G01N1/2247—Sampling from a flowing stream of gas
  • G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
  • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
  • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
  • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
  • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K7/00—Constructional details common to different types of electric apparatus
  • H05K7/18—Construction of rack or frame
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
  • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
  • G01N21/76—Chemiluminescence; Bioluminescence
  • G01N21/766—Chemiluminescence; Bioluminescence of gases

Definitions

• the invention relates to a control cabinet for exhaust gas measuring systems with a cabinet body, which is composed of two side walls, a ceiling, a floor and a rear wall and can be closed by a door arranged on the front side, wherein in the cabinet body a Meßgasverteiler and at least one measuring device are arranged an outlet of the sample gas distributor can be connected to an inlet of the at least one measuring device in a gastight manner.
• Such cabinets are used in particular in the automotive industry for determining the emission behavior of motor vehicles.
• the motor vehicle passes through a defined driving cycle on a chassis dynamometer, whereby the exhaust gases emitted thereby are collected, optionally diluted and fed to a control cabinet designed as an analysis unit.
• a control cabinet designed as an analysis unit.
• a power supply unit In the cabinet next to different measuring devices for determining various components of the exhaust gas, such as hydrocarbons, methane or nitrogen oxides, a power supply unit, a drive unit, the electronics, cooling units and a calibration unit are arranged.
• the control cabinet has a multiplicity of connections, lines and gas distributors, via which the gases are guided and distributed to the corresponding units.
• a control cabinet for an exhaust gas measuring system is known for example from EP 2 317 833 AI.
• This control cabinet consists of two cabinet parts. In the front part of the cabinet are measuring devices as well as a computer and an inlet interface for introducing sample gases, sample gas pumps, valves and pressure reducers arranged in the rear part of the cabinet.
• the sample gas distributor is arranged so movable relative to the cabinet body, that for gas-tight connection of the Meßgasverteilers to the at least one meter at least one attached to the Meßgasverteiler and forming an outlet coupling member with a attached to the at least one meter and forming an inlet coupling member are plugged into each other , eliminates the usually formed via hoses or metal pipes gas line, so that The temperature does not change between the sample gas distributor and the sample gas inlet of the meter and the heating and temperature monitoring integrated in the sample gas distributor can be used for all measuring instruments connected to the sample gas distributor.
• the heaters located at the measuring gas inlets of the measuring devices and the temperature monitoring can be omitted, whereby the measuring device can be made smaller and less expensive.
• maintenance of the meter does not require removal of the gas lines from the meter, which facilitates meter maintenance.
• the sample gas distributor is arranged translationally or rotationally movable in the cabinet body, whereby the coupling member of the sample gas distributor and the coupling member of the measuring device guided by a translational displacement or a rotational movement in the correct position to each other and can be easily connected together or separated from each other in this position.
• the sample gas distributor is arranged horizontally displaceable in the cabinet body via a guide, the guide having a first rail fastened to the cabinet body and a second rail fixed to the sample gas manifold and sliding in the first rail.
• a simple and inexpensive device for displaceable arrangement of the sample gas distributor is provided.
• the first rail is at least one fixed to the rear wall plate having at both ends projecting portions and the second rail clamped, wherein the two ends of the clip-like executed second rail engage behind the protruding portions of the first rail.
• a rail guide is realized in a particularly simple and cost-effective manner.
• the at least one measuring device is mounted in the cabinet body via an extension device.
• at least one element of the at least one measuring device is mounted in the cabinet body via an extension device.
• the measuring devices are placed on storage compartments, which are arranged horizontally in the cabinet body.
• the measuring device When servicing and diagnosing the gauges, they must first be pulled out of the bins and the entire connections removed, so that the maintenance and diagnostics of the gauges can only take place when the control cabinet is not in operation.
• the arrangement of the measuring device via an extension device it is possible that the measuring device can be at least partially pulled out of the cabinet body, which is sufficient to carry out the maintenance and diagnosis of the measuring devices. This makes it easier to diagnose and maintain the measuring instruments, and maintenance and diagnostics can be carried out in the control cabinet because no hoses or cables have to be loosened.
• the extension device preferably has a carrier element fixedly arranged in the cabinet body and a pivoting unit mounted pivotably thereon, wherein the at least one measuring device or an element of the at least one measuring device is fastened to the pivoting unit.
• the pivoting unit is pivotally attached to a first end on the carrier element and has a contact surface, which rests against a stop surface in its maximum extended position. This creates a simple, space-saving and cost-effective design of the extension device.
• the extension device has a hydraulic damper element, whereby the measuring device can be held in different intermediate positions.
• the coupling member of the Meßgasverteilers an external thread and the coupling member of at least one measuring device on a prestressed union nut, whereby the connection of the two coupling elements simplified and can be made in confined and hard to reach space.
• the sample gas distributor has a first and a second coupling member, wherein the second coupling member serves as a second outlet and is gas-tightly connectable to a coupling member of a second measuring device.
• the second coupling member serves as a second outlet and is gas-tightly connectable to a coupling member of a second measuring device.
• the at least one measuring device is a chemiluminescence detector analyzer or a
• Infrared detector analyzer Infrared detector analyzer.
• the sample gas distributor via a first guide is arranged horizontally and vertically displaceable in the cabinet body via a second guide.
• the sample gas distributor can be flexibly arranged in the cabinet body, so that a sample gas distributor can be moved according to the measurement to be carried out and connected to the measuring instruments required for the measurement.
• the sample gas distributor has a coupling element, which can be connected to the coupling element of a first or a second measuring device by the vertical and horizontal displacement of the sample gas distributor.
• the sample gas distributor can be moved between two positions and coupled with the respective measuring device depending on the measurement.
• the sample gas distributor on two coupling elements, which by the translational displacement of the sample gas manifold with the respective coupling links of a first and a second measuring device are connectable.
• the sample gas distributor can be coupled or decoupled simultaneously with two measuring devices.
• a control cabinet for exhaust gas measuring systems in which the measuring devices arranged therein can be made more space-saving and cost-effective by eliminating the heating and the temperature monitoring at the measuring gas inputs of the individual measuring devices. It also makes it easier to maintain the meters by not having to remove the gas lines from the meters.
• FIG. 1 shows a front view of a control cabinet for an exhaust gas measuring system.
• FIG. 2 shows a side view of a sample gas distributor from FIG. 1 with an arrangement according to the invention of the sample gas distributor.
• FIG. 3 shows a side view of the control cabinet from FIG. 1.
• the control cabinet 10 for an exhaust gas measuring system consists of a cabinet body 12 having a first side wall 14, an opposite second side wall 16, a bottom 18 and a ceiling 20 and a rear wall 22.
• An open front side 24 of the cabinet body 12 is pivotable by means of a door 26 is attached to the first side wall 14, closable.
• measuring devices 28, 30, 32 are arranged for the analysis of sample gases, which can be controlled via an arranged in the door 26 control unit 34.
• a power supply unit 36 is arranged, via which the measuring devices 28, 30, 32 and other arranged in the Schränk Sciences 12 components are supplied with power.
• the first measuring device 28 is arranged, which is an infrared detector analyzer and is used to determine, for example, carbon monoxide, carbon dioxide or hydrocarbon compounds.
• the measurement gas in the infrared detector analyzer 28 is cooled by a cooler 38 disposed above the infrared detector analyzer 28.
• the second measuring device 30 is arranged, which is designed as a chemiluminescence detector analyzer and over which the amount of nitrogen oxide in the exhaust gas is measured.
• a flame ionization detector analyzer for determining hydrocarbons is arranged as the third measuring device 32.
• a sample gas distributor 46 is arranged, which distributes the sample gas to the corresponding measuring devices 28, 30, 32.
• FIG. 2 shows a displaceable arrangement according to the invention of a sample gas distributor 46 on the side wall 16 of the cabinet body 12.
• the sample gas distributor 46 is mounted horizontally displaceable on the rear wall 22 of the cabinet body 12 via a guide 48.
• the guide 48 has a first rail 50 which is secured by screws 54, 56, 58 to the rear wall 22 of the cabinet body 12 and a second rail 52, which is secured by screws 60, 62, 64 on the sample gas manifold 46.
• the first rail 50 is composed of two adjacent to the rear wall 12 and deformed sheets 66, 68, each having a protruding portion 70, 72 at the opposite vertical ends and thereby each have a gap between the rear wall 22 and the respective projecting portion 70, 72 forms.
• the second rail 52 is of a clip-like construction and has a wall 74 resting against the sample gas distributor 46, horizontally extending walls 76, 78 adjoining both vertical ends of the wall 74 and collars 80, 82 adjoining the walls 76, 78, which run parallel to the wall 74 run.
• the collars 80, 82 engage behind the protruding portions 70, 72, so that the second rail is arranged vertically fixed and horizontally displaceable on the first rail.
• On the plate 66 engages an adjusting screw 84 which is screwed into a fixed to the cabinet body 12 holding member 86. By screwing in or out of the adjusting screw 84, the plate 66 is adjusted in the vertical direction, thereby adjusting the guide 48 for the best possible operation.
• the sample gas distributor 46 has at the measuring devices 28, 30, 32 side facing a first coupling member 86 and a second coupling member 88, which form two outlets of Meßgasvertärkers 46 and with coupling members 90, 92 of the measuring devices 30, 32, see Figure 3, gas-tight are connectable.
• Another coupling element 94 of the measuring gas distributor 46 is connected to the measuring device 28 via a hose, not shown in the figure, so that all measuring devices 28, 30, 32 arranged in the cabinet body 12 are supplied with measuring gas via the measuring gas distributor 46.
• the final fixing takes place via external threads formed on the coupling members 86, 88 of the measuring gas distributor 46 and prestressed union nuts arranged on each coupling member 90, 92 of the measuring instruments 30, 32.
• FIG. 3 shows a pivotable arrangement of an element 96 of the measuring device 30, in which embodiment the element 96 is a cooler of a chemiluminescence detector analyzer.
• the cabinet 10 and entire measuring devices 28, 30, 32 can be arranged pivotably in the cabinet body 12.
• the cooler 96 is pivotally mounted in the cabinet body 12 via an extension device 98.
• the extension device 98 has a support element 100 fixedly arranged in the cabinet body 12, which in this embodiment forms the housing of the measuring device 30, and a pivoting unit 102 pivotally mounted therein, wherein the cooler 96 is fastened to the pivoting unit 102.
• the pivoting unit 102 is pivotably mounted in the carrier element 100 via a bolt 104 and has a contact surface 106 which rests against a stop surface formed on the carrier element 100 and not shown in the figures when the pivoting unit 102 is extended to the maximum.
• the extension device 98 has a hydraulic damper 108, which is fastened at one end to the carrier element 100 and at the other end to the pivoting unit 102.
• the hydraulic damper 108 can be designed such that it is used only for damping the extension movement of the pivoting unit 102 or for realizing different extension positions of the pivoting unit 102.
• a control cabinet for exhaust gas measuring systems is created in which the sample gas line is simplified by eliminating the heating and the temperature monitoring at the measuring gas inputs of the measuring devices and thus the measuring devices can be designed to save space and cost.
• maintenance of the meters is facilitated by removing any gas lines from the meter.
• the scope of the present invention is not limited to the embodiment described.
• the sample gas distributor can also be displaced vertically in addition to the horizontal displacement by providing an additional guide for vertical displacement.
• the measuring cabinet can also be equipped with other or additional measuring devices, or measuring devices other than the chemiluminescence detector analyzer or its element can be arranged pivotably in the cabinet body 12.

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• Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Analytical Chemistry (AREA)
• Biochemistry (AREA)
• General Health & Medical Sciences (AREA)
• Immunology (AREA)
• Pathology (AREA)
• Combustion & Propulsion (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Plasma & Fusion (AREA)
• Biomedical Technology (AREA)
• Molecular Biology (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Sampling And Sample Adjustment (AREA)
• Testing Of Engines (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=58224755

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Family Cites Families (23)

• 2016
  • 2016-05-31 DE DE102016110066.8A patent/DE102016110066B3/de active Active
• 2017
  • 2017-04-13 US US16/305,060 patent/US10986749B2/en active Active
  • 2017-04-13 WO PCT/EP2017/058932 patent/WO2017207160A1/de unknown
  • 2017-04-13 KR KR1020187037801A patent/KR102203467B1/ko active IP Right Grant
  • 2017-04-13 EP EP17717700.3A patent/EP3465129A1/de not_active Withdrawn
  • 2017-04-13 CN CN201780029906.8A patent/CN109564143B/zh active Active
  • 2017-04-13 JP JP2018562528A patent/JP6738442B2/ja active Active

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