CN110940500A - Measuring chamber and measuring rack - Google Patents
Measuring chamber and measuring rack Download PDFInfo
- Publication number
- CN110940500A CN110940500A CN201910902686.6A CN201910902686A CN110940500A CN 110940500 A CN110940500 A CN 110940500A CN 201910902686 A CN201910902686 A CN 201910902686A CN 110940500 A CN110940500 A CN 110940500A
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- measuring
- measurement
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- test
- chamber
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3281—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators removably mounted in a test cell
Abstract
The invention relates to a measuring chamber (1) for checking the leak tightness of a line arrangement (7) against a test fluid which can be pressurized to a test pressure. The measuring chamber (1) has at least one measuring device (5) which is already at least indirectly actively connected with a measuring space (3), the measuring space (3) being surrounded by the measuring chamber (1) and surrounding at least a part of the wiring arrangement (7). The measuring space (3) is hermetically sealed from an external gas space (4) surrounding the measuring chamber (1). The change in the state of the measurement fluid filling the measurement space (3) can be determined by means of a measuring device (5), so that an active connection between the test fluid and the measurement fluid, which is caused by an insufficient leak tightness of the line arrangement (7), can be determined by determining the change in the state of the measurement fluid. The invention also relates to a measuring stand (28).
Description
Technical Field
The invention relates to a measuring chamber for checking the leak tightness of a line arrangement against a test fluid pressurized to a test pressure. The invention also relates to a measuring stand with at least one measuring chamber and with an evaluation device.
Background
In the chemical industry, it is always necessary to transport many chemicals of diverse types, for example from the production site to the use site. Inside a chemical plant, this is usually done by means of pipelines connected to form a pipeline system. In order to construct these pipeline systems, many other system components are required in addition to the mentioned pipelines, such as valves, flanges, couplings, sensors, splitters and the like. In order to ensure safe operation of the pipeline system, all system components must be at least subjected to a leak tightness test. In addition, however, any emissions that escape from these system components during operation play an important role in the evaluation of worker protection.
In a known test method for checking system components of a pipeline system (hereinafter referred to as line arrangement), the line arrangement to be tested is filled with helium gas and pressurized to a test pressure. The line arrangement is then flushed with a flushing gas (e.g. nitrogen) and the flushing gas is then investigated for traces of helium. It is also known to record and detect helium gas escaping at the leak site using a sniffing probe or a suitable detection device. The disadvantage here is that the wiring arrangement cannot be tested under real conditions. The test conditions do not reflect either the installation conditions or the operating pressure, operating temperature, filling level or similar parameters. Furthermore, it is likewise not possible to check the extent to which certain substances (e.g. highly corrosive chemicals) affect the operational safety of the line arrangement.
Disclosure of Invention
It is therefore considered an object of the present invention to provide a measuring chamber which facilitates inspection of the wiring arrangement under conditions which can be approximated to the actual situation.
This object is achieved according to the invention in that the measuring chamber has at least one measuring device, wherein the measuring device is at least indirectly actively connected with a measuring space (volume) which is surrounded by the measuring chamber and surrounds at least a part of the line arrangement, wherein the measuring space is hermetically sealed off from an external gas space surrounding the measuring chamber, and wherein a change in the state of a measuring fluid filling the measuring space can be determined by means of the measuring device, such that an active connection between the test fluid and the measuring fluid caused by an insufficient leak tightness of the line arrangement can be determined by determining the change in the state of the measuring fluid.
The invention provides that, in particular, the pressure, temperature, composition, pH, conductivity, refractive index, particle concentration or similar parameters of the measurement fluid can be determined and/or monitored by means of one or more measurement devices. This enables not only to identify any leaking line arrangement, but also to record and evaluate the escaping emissions of the test fluid, for example with respect to the desired operational safety of the line arrangement during the course of the intended application.
In order to obtain a spatial and/or temporal resolution of the properties of the measurement fluid, it is further proposed that the measurement chamber can have a plurality of measurement devices which are arranged at a distance from one another and inside the measurement space. The arrangement of a plurality of temperature sensors within the measurement space enables, for example, the determination of a time-and spatially-resolved temperature profile of the measurement fluid arranged in the measurement space, which enables the escape of the heated test fluid from the line arrangement to be understood in particular.
An advantageous embodiment of the inventive concept proposes that the measuring chamber has a test supply line, wherein the test supply line passes through a measuring chamber wall and has an inner test connection arranged inside the measuring chamber and an outer test connection arranged outside the measuring chamber, wherein a test reservoir can be connected in a fluid-conveying manner to the outer test connection, wherein a test fluid pressurized to the test pressure can be provided by the test reservoir, wherein the line arrangement to be tested has at least one inlet portion and a tip portion, wherein the inlet portion can be connected in a fluid-conveying manner to the inner test connection, and wherein the line arrangement can be sealed in a leak-tight manner at the tip portion by means of a tip piece. The invention proposes that the inlet section and the internal test connection have a connection device, such as a flange, a thread with a screw cap and a sealing element, a quick coupling or the like, which are adapted to one another.
The test reservoir may for example be a pressure vessel filled with the test fluid, a supply line through which the test fluid is transported from the test fluid storage and/or production site into the area of the measurement bench, a compressor "on site" compressing and providing the test fluid, or the like.
The invention proposes that the test fluid can be supplied from the test reservoir either statically, i.e. with constant pressure and/or constant temperature and/or constant volumetric flow rate and/or constant composition, or dynamically, i.e. with variable pressure and/or variable temperature and/or variable volumetric flow rate and/or variable composition, both of these.
An advantageous embodiment of the invention provides that the line arrangement is sealed in a fluid-tight manner by the end piece, so that the test fluid is prevented from flowing through the line arrangement. In the sense of the inventive concept, "fluid-tight" means that mutual communication between the test fluid and the measurement fluid is prevented. In particular, in order to test the line arrangement while excluding flow dynamics effects (e.g. boundary layer or vortex formation), a fluid-tight design of the end piece is advantageous.
The invention also proposes that the end piece can have a so-called rupture seal or a pressure rupture seal. This type of seal undergoes material failure at a defined rupture pressure and contributes to a sudden pressure drop inside the wiring arrangement. This makes it possible to check the behavior of the line arrangement and the pressure-carrying capacity of the line arrangement in the event of a pressure surge of this type.
In an advantageous embodiment of the measuring chamber according to the invention, the invention provides that the measuring chamber has a test discharge line, wherein the test discharge line passes through the measuring chamber wall and has an inner discharge line connection arranged inside the measuring chamber and an outer discharge line connection arranged outside the measuring chamber, wherein the inner discharge line connection is connectable in a fluid-conveying manner to the fluid outlet of the end piece such that the test fluid can flow through the line arrangement. This type of measurement chamber embodiment also enables the testing of the wiring arrangement in view of dynamic effects, in particular flow dynamic effects.
Furthermore, the test can also be performed with the test fluid changing during the test operation, which also enables checking of the interaction between the various test fluids and the line arrangement.
The invention proposes that the fluid outlet and the internal drainage line connection have a connection device, such as a flange, a thread with a screw cap and a sealing element, a quick coupling or the like, which are adapted to one another.
An advantageous embodiment of the inventive concept provides that at least one valve element is or can be arranged between an end portion of the line arrangement and the outer discharge line connection, so that a flow of the test fluid through the line arrangement can be facilitated or prevented. The valve element enables, for example, switching between a static test without a volume flow rate and a dynamic test with a volume flow rate.
The invention further provides that the valve element can be designed as a throttle valve, which makes it possible to adjust the pressure and/or the volume flow rate and/or the flow rate of the test fluid by means of the valve element.
The valve element can also be designed as a pressure relief valve and/or with a pressure relief valve, so that the test fluid is discharged from the line arrangement and/or the measuring chamber at a defined, excessively high pressure and damage to the line arrangement and/or the measuring chamber is thus prevented.
An advantageous embodiment of the invention provides that the measurement chamber has a measurement supply line, wherein the measurement supply line passes through the measurement chamber wall and enters the measurement space on the inner side of the measurement chamber wall, wherein the measurement supply line has a first measurement connection arranged outside the measurement chamber, wherein a measurement reservoir can be connected to the first measurement connection in a fluid-conveying manner, wherein a measurement fluid can be provided by the measurement reservoir and can be introduced into the measurement space of the measurement chamber via the measurement supply line. This type of measurement chamber embodiment enables influencing the parameters of the measurement fluid.
In a particularly advantageous embodiment of the measuring chamber, the measuring reservoir is designed in such a way that it facilitates a change in the pressure of the measuring fluid, for example in that the measuring reservoir is or can be actively connected to a compressor. This is advantageous in particular under the following conditions: if it is intended to test a circuit arrangement which is not intended to operate in an environment with an international standard atmosphere (temperature 15 ℃, pressure 1013.25hPa), but for example inside an atmosphere with a reduced or increased pressure.
In an advantageous embodiment of the measuring chamber according to the invention, it is proposed that the measuring chamber has a measuring outlet line, wherein the measuring outlet line extends from the measuring space through the measuring chamber wall, and has a second measuring connection arranged outside the measuring chamber, wherein the measuring fluid can be conveyed out of the measuring space of the measuring chamber via the measuring outlet line. This enables the measurement fluid to flow through the measurement space.
The invention also provides that the measurement fluid can be exchanged constantly and/or for individual test portions. Thus, for example, in a first test section the measurement fluid may be nitrogen at room temperature, which fills the measurement space without flowing through it, while in a further test section the measurement fluid may be carbon dioxide at 80 ℃, which flows through the measurement space at a defined volumetric flow rate. In this type of measuring chamber embodiment, it is particularly advantageous that the measuring fluid can be adjusted and/or varied depending on the actual operating parameters of the line arrangement.
Furthermore, the invention provides that, for determining the flow mechanics of the line arrangement, a measuring fluid flowing through the measuring space can be used. For this purpose, optical markers, for example atomizers, soot or the like, which can be detected by means of optical methods and thus enable the formation of boundary layers, vortices, dead water zones or the like to be tested, may be added to the measurement fluid, for example.
An advantageous embodiment of the inventive concept provides that at least one of the measuring devices is arranged inside the measuring and discharge line or is actively connected to the measuring and discharge line. The invention proposes that the measuring device is or can be actively connected to the measurement drain, for example by means of a riser, a bypass or the like.
An advantageous embodiment of the invention provides that the measuring chamber has a temperature control device by means of which the temperature of the line arrangement can be changed directly and/or indirectly, at least in sections. The temperature control means may comprise both heating and cooling.
The temperature control device may have, for example, a channel through which the fluid flows, wherein the invention proposes that the temperature control fluid flowing through the channel can introduce and/or remove thermal energy into and/or from the measurement chamber, so that the temperature can be set inside the measurement chamber. Other possible temperature control devices are, in particular, Peltier elements, electrical heating wires, infrared lamps, microwave generators or the like.
The invention also provides that the temperature control device can be adapted to the measuring chamber and/or the line arrangement in such a way that: in order to, for example, only heat and/or cool the line arrangement, only local changes in the temperature inside the measurement chamber are facilitated.
The invention also relates to a measuring rack having at least one measuring chamber embodiment described above and an evaluation device, wherein the evaluation device is at least actively connected in signal transmission with the measuring device of the measuring chamber and a parameter of the measuring fluid which has been determined by the measuring device can be evaluated by means of the evaluation device, so that the leak tightness of a line arrangement arranged in the measuring chamber against a test fluid which is pressurized to a test pressure can be determined by means of the measuring rack.
In a particularly advantageous embodiment of the measuring stand, the invention provides that a plurality of measuring chambers, each of which may have a plurality of measuring devices, can be monitored by means of an evaluation device.
Furthermore, the invention provides that the measuring chamber can be controlled via a central control device. By means of the control device, in particular the pressure and temperature of the test fluid and the measurement fluid can be controlled and/or monitored to ensure safe operation of the measurement bench.
An advantageous embodiment of the inventive concept proposes that the measuring rack has at least one test reservoir and at least one measuring reservoir, wherein the test reservoir is connected in a fluid-conveying manner to an outer test connection of the measuring chamber, wherein the measuring reservoir is connected in a fluid-conveying manner to a first measuring connection of the measuring chamber.
The invention proposes that a test reservoir can be assigned to each measurement chamber of the measurement bench or that one test reservoir can be assigned to at least two measurement chambers. The measuring rack may also have a test reservoir, by means of which a plurality of test fluids can be provided. The combination in which the test reservoir and the measurement chamber have been and/or are fluidically connected to one another ultimately depends on the specific requirements of the measurement bench.
An advantageous embodiment of the invention provides that at least one of the measuring chambers has a test drain line and/or a test drain line which can be blocked by means of a valve element, wherein the outer drain line connection enters at least indirectly into a first exhaust gas device of the measuring rack, wherein the test fluid can be operated by the first exhaust gas device, in particular in such a way that the test fluid which has been conveyed out of the measuring chamber is prevented from influencing a gas space (volume) surrounding the measuring rack. Within the meaning of the inventive concept, "… … operable" means that both the test fluid can be disposed of, for example by being pumped into a disposal system or blown out into the environment, and the test fluid can be circulated in a test fluid circuit.
In an advantageous embodiment of the measuring rack according to the invention, it is proposed that at least one of the measuring chambers has a measuring outlet line and/or a measuring outlet line with at least one measuring device, wherein the second measuring connection enters at least indirectly into a second exhaust gas device of the measuring rack, wherein the measuring fluid can be operated by the second exhaust gas device, in particular in such a way that the measuring fluid which has been conveyed out of the measuring chamber is prevented from influencing a gas space surrounding the measuring rack. Within the meaning of the inventive concept, "… … -operable" means that both the measurement fluid can be disposed of, for example by being pumped into a disposal system or blown out into the environment, and the measurement fluid can be circulated in a measurement fluid circuit.
An advantageous embodiment of the inventive concept provides that the measuring stand has at least two measuring chambers. This makes it possible in particular to test a plurality of line arrangements simultaneously.
The invention also provides that the measuring rack can have a plurality of measuring reservoirs and/or test reservoirs which contain the same or different measuring and/or test fluids.
An advantageous embodiment of the invention provides that at least one of the measuring chambers has a temperature control device. In this case, the invention proposes that the temperature control device can be controlled by the control device.
Drawings
Further advantageous embodiments of the measuring chamber are explained with reference to the exemplary embodiments depicted in the drawings, in which:
FIGS. 1 to 4 show diagrammatic views of embodiments of the measuring chamber, and
fig. 5 shows a diagrammatic view of an embodiment of the measurement stand.
Fig. 1 shows a diagrammatic view of an embodiment of a measurement chamber 1 according to the invention. The measuring chamber 1 has a measuring chamber wall 2 which surrounds a measuring space 3. The measuring space 3 is hermetically sealed from an outer gas space 4 surrounding the measuring chamber 1. The measuring chamber 1 has a measuring device 5 which is already actively connected to the measuring space 3 and is connected in signal-transmitting manner to an evaluation device 6.
A line arrangement 7 surrounding and enclosing a line space (line volume)8 is arranged inside the measurement chamber 1 by the measured space 3. The opening (not depicted) of the wiring arrangement 7 is sealed and the wiring space 8 is filled with a test fluid pressurized to a test pressure. The measuring device 5 and the test fluid are matched to one another in such a way that a very small quantity of the test fluid can be detected by means of the measuring device 5. By means of the depicted measuring chamber 1, it can be determined whether the line arrangement 7 is sufficiently leak-proof sealed against a test fluid pressurized to a test pressure for its intended application by determining whether the test fluid enters said measurement fluid by means of the measuring device 5.
In contrast to the embodiment of the measurement chamber 1 depicted in fig. 1, the measurement chamber 1 depicted in fig. 2 has a test supply line 9 through the measurement chamber wall 2. The test supply line 9 has an inner test connection 10 which is arranged inside the test chamber 1 and is connected in a fluid-conveying manner to an inlet portion 11 of the line arrangement 7. Furthermore, the test supply line 9 has an outer test connection 12, wherein the test reservoir 13 is connected in a fluid-conveying manner to the outer test connection 12. The test reservoir 13 provides a test fluid pressurized to the test pressure. In addition to the inlet portion 11, the line arrangement 7 also has an end portion 14, wherein the line arrangement 7 is sealed in a leak-proof manner by means of an end piece 15. The line arrangement 7 is sealed in the terminal portion 14 in a fluid-tight manner by the terminal piece 15, so that the test fluid is prevented from flowing through the line arrangement 7.
In contrast to the embodiment of the measuring chamber 1 depicted in fig. 1 and 2, the measuring chamber 1 depicted in fig. 3 has a test discharge line 16 which passes through the measuring chamber wall 2 and has an inner discharge line connection 17 arranged inside the measuring chamber 1 and an outer discharge line connection 18 arranged outside the measuring chamber 1. The end piece 15 of the line arrangement 7 arranged in the measuring chamber 1 has a fluid outlet 19, wherein the inner discharge line connection 17 is connected in a fluid-conveying manner to the fluid outlet 19. The outer discharge line connection 18 enters an exhaust system 20, the exhaust system 20 being only diagrammatically depicted.
In the depicted measurement chamber 1, the test fluid flow is facilitated through the wiring arrangement 7. Furthermore, also in order to facilitate a static check of the line arrangement 7, the measuring chamber 1 has a valve element 21 between the end portion 14 of the line arrangement 7 and the outer discharge line connection 18, by means of which valve element 21 a flow of the test fluid through the line arrangement 7 can be facilitated or prevented.
In contrast to the embodiment of the measuring chamber 1 depicted in fig. 1 to 3, the measuring chamber 1 depicted in fig. 4 has a measuring supply line 22 which passes through the measuring chamber wall 2 and into the inside (not designated) of the measuring chamber wall 2 in the measuring space 3. The measuring supply line 22 has a first measuring connection 23 arranged outside the measuring chamber 1. The measuring reservoir 24 is connected in a fluid-conveying manner to the first measuring connection 23, by means of which measuring reservoir 24 a measuring fluid can be supplied and introduced via the measuring supply line 22 into the measuring space 3 of the measuring chamber 1.
Furthermore, the measuring chamber 1 depicted in fig. 4 has a measuring discharge line 25 which extends from the measuring space 3 through the measuring chamber wall 2 and has a second measuring connection 26 which is arranged outside the measuring chamber 1. The second measuring connection 26 is connected in a fluid-conveying manner to the exhaust system 20, so that the measuring fluid can be discharged from the measuring space 3 of the measuring chamber 1 via the measuring discharge line 25 into the exhaust system 20.
The measuring chamber 1 has two measuring devices 5, one of which is arranged inside the measuring and discharge line 25. The measuring device 5 is connected in signal transmission to the evaluation device 6.
In order to change the temperature of the wiring arrangement 7, the measuring chamber 1 has a temperature control device 27, the temperature control device 27 being only diagrammatically depicted. The temperature control means 27 is in the form of an electric heating wire, for example.
Fig. 5 shows a measurement bench 28 with three measurement chambers 1, an evaluation device 6, a test reservoir 13, a measurement reservoir 24 and a measurement bench control device 29. The measuring chambers 1 are connected in a fluid-conveying manner to a measuring reservoir 24 by means of their measuring supply line 22 and to the exhaust system 20 by means of their measuring discharge line 25, so that the measuring fluid can flow through the measuring space 3 of the measuring chambers.
A wiring arrangement 7 which is in each case connected in a fluid-conveying manner to a test reservoir 13 by means of a test supply line 9 and to an exhaust system 20 by means of a test exhaust line 16 is arranged in each of the measuring chambers 1. The exhaust system 20 of the depicted measurement stand 28 includes a first exhaust device 29 and a second exhaust device 30. The test fluid is reprocessed by the first exhaust gas device 29 and fed back to the test reservoir 13 by means of a supply line, which is not depicted. The measurement fluid is fed into a not depicted disposal system by means of the second exhaust gas device 30 and disposed of.
The evaluation device 6 of the measuring stand 28 is connected in a signal-transmitting manner to the measuring device 5 of the measuring chamber 1, so that the parameters of the measuring fluid which have been determined by the measuring device 1 can be evaluated by means of the evaluation device 6.
One of the measuring chambers 1 of the depicted measuring rack 28 has a temperature control device 27 for heating the line arrangement. The temperature control device 27 is actively connected to the measurement stage control device 29 in such a way that the temperature control device 27 can be controlled by the measurement stage control device 29.
In the depiction of fig. 5, individual multiple elements of the same type are in each case designated, for example, by a single reference numeral.
List of reference numerals
1. Measuring chamber
2. Measuring chamber wall
3. Measuring space
4. External gas space
5. Measuring device
6. Evaluation device
7. Line arrangement
8. Line space
9. Test supply line
10. Internal test connector
11. An inlet section
12. External test connecting piece
13. Test reservoir
14. End part
15. End piece
16. Test discharge line
17. Internal discharge line connector
18. External discharge line connector
19. Fluid outlet
20. Exhaust system
21. Valve element
22. Measuring supply line
23. First measuring connector
24. Measuring reservoir
25. Measuring discharge line
26. Second measuring connector
27. Temperature control device
28. Measuring rack
29. Measuring rack control device
30. First exhaust gas device
31. Second exhaust gas device
Claims (15)
1. A measuring chamber (1) for checking the leak tightness of the line arrangement (7) against a test fluid which can be pressurized to a test pressure, characterized in that the measuring chamber (1) has at least one measuring device (5), wherein the measuring device (5) has been brought into at least indirect active connection with the measuring space (3), the measurement space (3) is surrounded by the measurement chamber (1) and surrounds at least a part of the line arrangement (7), wherein the measurement space is hermetically sealed from an external gas space (4) surrounding the measurement chamber (1), and wherein a change in the state of the measurement fluid filling the measurement space (3) can be determined by means of the measurement device (5), whereby an active connection between the test fluid and the measurement fluid, which is caused by an insufficient leak tightness of the wiring arrangement (7), can be determined by determining a change of state of the measurement fluid.
2. Measuring chamber (1) according to claim 1, characterized in that the measuring chamber (1) has a test supply line (9), wherein the test supply line (9) passes through a measuring chamber wall (2) and has an inner test connection (10) arranged inside the measuring chamber (1) and an outer test connection (12) arranged outside the measuring chamber (1), wherein a test reservoir (13) can be connected in a fluid-conveying manner to the outer test connection (12), wherein a test fluid pressurized to the test pressure can be provided by the test reservoir (13), wherein a line arrangement (7) to be tested has at least one inlet section (11) and a tip section (14), wherein the inlet section (11) can be connected in a fluid-conveying manner to the inner test connection (10), and wherein the line arrangement (7) can be secured in the tip section (14) by means of a tip piece (15) And sealing in a leakage mode.
3. The measurement chamber (1) according to claim 2, wherein the line arrangement (7) is sealed in a fluid-tight manner by the end piece (15) such that the test fluid is prevented from flowing through the line arrangement (7).
4. Measuring chamber (1) according to claim 2, characterized in that the measuring chamber (1) has a test exhaust line (16), wherein the test exhaust line (16) passes through the measuring chamber wall (2) and has an inner discharge line connection (17) arranged inside the measuring chamber (1) and an outer discharge line connection (18) arranged outside the measuring chamber (1), wherein the inner discharge line connection (17) is connectable in a fluid-conveying manner to a fluid outlet (19) of the end piece (15) such that the test fluid can flow through the line arrangement (7).
5. Measuring chamber (1) according to claim 4, characterized in that at least one valve element (21) is or can be arranged between an end portion (14) of the wiring arrangement (7) and the outer wiring connection (18), so that a flow of the test fluid through the wiring arrangement (7) can be facilitated or prevented.
6. Measuring chamber (1) according to one of claims 1 to 5, characterized in that the measuring chamber (1) has a measuring supply line (22), wherein the measuring supply line (22) passes through the measuring chamber wall (2) and enters into the measuring space (3) on the inner side of the measuring chamber wall (2), wherein the measuring supply line (22) has a first measuring connection (23) arranged outside the measuring chamber (1), wherein a measuring reservoir (24) can be connected to the first measuring connection (23) in a fluid-conveying manner, wherein a measuring fluid can be provided by the measuring reservoir (24) and can be introduced into the measuring space (3) of the measuring chamber (1) via the measuring supply line (22).
7. Measuring chamber (1) according to claim 6, characterized in that the measuring chamber (1) has a measuring discharge line (25), wherein the measuring discharge line (25) extends from the measuring space (3) through the measuring chamber wall (2), and has a second measuring connection (26) arranged outside the measuring chamber (1), wherein the measuring fluid can be conveyed out of the measuring space (3) of the measuring chamber (1) through the measuring discharge line (25).
8. Measuring chamber (1) according to claim 7, characterized in that at least one of the measuring devices (5) is arranged inside the measuring discharge line (25) or has been actively connected with the measuring discharge line (25).
9. Measuring chamber (1) according to one of claims 1 to 8, characterized in that the measuring chamber (1) has a temperature control device (27), by means of which temperature control device (27) the temperature of the wiring arrangement (7) can be changed directly and/or indirectly, at least in sections.
10. Measurement bench (28) having at least one measurement chamber (1) according to one of claims 1 to 9 and an evaluation device (6), wherein the evaluation device (6) has been brought into active connection at least in a signal-transmitting manner with the measurement device (5) of the measurement chamber (1) and a parameter of the measurement fluid which has been determined by the measurement device (5) can be evaluated by means of the evaluation device (6), so that the leak tightness of a line arrangement (7) arranged in the measurement chamber (1) against a test fluid which is pressurized to a test pressure can be determined by means of the measurement bench (28).
11. The measurement bench (28) according to claim 10, characterized in that the measurement bench (28) has at least one test reservoir (13) and at least one measurement reservoir (24), wherein the test reservoir (13) is connected in a fluid-conveying manner to an outer test connection (12) of the measurement chamber (1), wherein the measurement reservoir (24) is connected in a fluid-conveying manner to a first measurement connection (23) of the measurement chamber (1).
12. The measurement bench (28) according to claim 11, characterized in that at least one of the measurement chambers (1) is a measurement chamber (1) according to one of claims 4 or 5, wherein the outer discharge line connection (18) enters at least indirectly into a first exhaust device (30) of the measurement bench (28), wherein the test fluid can be operated by the first exhaust device (30), in particular in such a way that it is prevented that the test fluid which has been conveyed out of the measurement chamber (1) influences a gas space surrounding the measurement bench (28).
13. The measurement bench (28) according to any one of claims 11 or 12, characterized in that at least one of the measurement chambers (1) is a measurement chamber (1) according to any one of claims 7 or 8, wherein the second measurement connection (26) enters at least indirectly into a second exhaust device (31) of the measurement bench (28), wherein the measurement fluid can be operated by the second exhaust device (31), in particular in such a way that measurement fluid which has been conveyed out of the measurement chamber (1) is prevented from influencing a gas space surrounding the measurement bench (28).
14. The measurement bench (28) according to any of claims 10 to 13, characterized in that the measurement bench (28) has at least two measurement chambers (1).
15. The measurement bench (28) according to any one of claims 10 to 14, characterized in that at least one of the measurement chambers (1) is a measurement chamber (1) according to claim 9, wherein the temperature control device (27) is controllable by a measurement bench control device (29).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18196301 | 2018-09-24 | ||
| EP18196301.8 | 2018-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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| US5553483A (en) * | 1995-08-15 | 1996-09-10 | Pilot Industries, Inc. | Leak detection system |
| US20050223779A1 (en) * | 2003-06-11 | 2005-10-13 | Charles Perkins | Methods and apparatus for leak detection by the accumulation method |
| CN101151514A (en) * | 2005-02-28 | 2008-03-26 | 高级技术材料公司 | Apparatus and process for leak-testing and qualification of fluid dispensing vessels |
| DE102007057944A1 (en) * | 2007-12-01 | 2009-06-04 | Inficon Gmbh | Method and device for leak testing |
| CN102105770A (en) * | 2008-08-08 | 2011-06-22 | 厄利孔莱博尔德真空技术有限责任公司 | Method for determining an overall leakage rate of a vacuum system and vacuum system |
| CN102621081A (en) * | 2011-01-27 | 2012-08-01 | 西克麦哈克有限公司 | Gas analyser for measuring the mercury content of a gas |
-
2019
- 2019-09-09 DE DE102019006343.0A patent/DE102019006343A1/en active Pending
- 2019-09-24 CN CN201910902686.6A patent/CN110940500A/en active Pending
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| US5553483A (en) * | 1995-08-15 | 1996-09-10 | Pilot Industries, Inc. | Leak detection system |
| US20050223779A1 (en) * | 2003-06-11 | 2005-10-13 | Charles Perkins | Methods and apparatus for leak detection by the accumulation method |
| CN101151514A (en) * | 2005-02-28 | 2008-03-26 | 高级技术材料公司 | Apparatus and process for leak-testing and qualification of fluid dispensing vessels |
| DE102007057944A1 (en) * | 2007-12-01 | 2009-06-04 | Inficon Gmbh | Method and device for leak testing |
| CN102105770A (en) * | 2008-08-08 | 2011-06-22 | 厄利孔莱博尔德真空技术有限责任公司 | Method for determining an overall leakage rate of a vacuum system and vacuum system |
| CN102621081A (en) * | 2011-01-27 | 2012-08-01 | 西克麦哈克有限公司 | Gas analyser for measuring the mercury content of a gas |
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