CN112304560B - Test cabin for testing natural gas flow field - Google Patents
Test cabin for testing natural gas flow field Download PDFInfo
- Publication number
- CN112304560B CN112304560B CN201910691201.3A CN201910691201A CN112304560B CN 112304560 B CN112304560 B CN 112304560B CN 201910691201 A CN201910691201 A CN 201910691201A CN 112304560 B CN112304560 B CN 112304560B
- Authority
- CN
- China
- Prior art keywords
- test
- test chamber
- space
- chamber body
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 229
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000003345 natural gas Substances 0.000 title claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 22
- 238000002955 isolation Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 239000002775 capsule Substances 0.000 claims 2
- 238000003384 imaging method Methods 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 11
- 230000004382 visual function Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000004599 local-density approximation Methods 0.000 description 4
- 238000000917 particle-image velocimetry Methods 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066057 cabin-1 Proteins 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
- G01P5/20—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance using particles entrained by a fluid stream
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Multimedia (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a test chamber for testing a natural gas flow field, which comprises: the test chamber body, the sealed unit, ventilation unit and power supply unit, the test chamber body is inclosed cabin body, transparent window has on the lateral wall of test chamber body, the sealed unit includes first insulated door and second insulated door, first insulated door is installed on a lateral wall of test chamber body, the second insulated door is located inside the test chamber body, the second insulated door keeps apart into test space and buffer space with the inner space of test chamber body, first insulated door and buffer space intercommunication, the ventilation unit includes air conveyor and the pipeline with the safe air supply intercommunication, air conveyor's income wind gap and pipeline intercommunication, air conveyor's air outlet and test space intercommunication. The invention can be applied to particle imaging test equipment and laser Doppler test equipment, provides airtight and explosion-proof test space for the particle imaging test equipment and the laser Doppler test equipment, and simultaneously tests the natural gas flow field by using the test space with a visual function.
Description
Technical Field
The invention relates to the technical field of natural gas pipeline testing, in particular to a testing cabin for testing a natural gas flow field.
Background
Natural gas is an important clean energy source, and the demand of the natural gas is increasing. In the process of natural gas transportation, the process of natural gas flowing in the pipeline also has important research significance.
Currently, methods for detecting flow fields and flow velocities include particle imaging velocimetry and laser doppler velocimetry. The two speed measurement methods belong to non-contact type tests, and both require polishing a test area to illuminate the test area. The particle imaging test and the laser Doppler test respectively need to adopt a particle imaging test device and a laser Doppler test device to carry out speed measurement.
However, both the particle imaging test equipment and the laser doppler test equipment are non-explosion-proof products, natural gas is flammable and explosive, and in order to avoid the influence of the natural gas in the working environment on the normal operation of the particle imaging test equipment and the laser doppler test equipment, a sealed and explosion-proof test chamber with a visual function needs to be designed to test the flow field of the natural gas pipeline.
Disclosure of Invention
The embodiment of the invention provides a test cabin for testing a natural gas flow field, which can be suitable for particle imaging test equipment and laser Doppler test equipment, provides airtight and explosion-proof test for the natural gas flow field, and simultaneously tests the natural gas flow field by using a test space with a visualization function. The technical scheme is as follows:
the embodiment of the invention provides a test cabin for testing a natural gas flow field, which comprises: the test chamber comprises a test chamber body, a sealing unit, a ventilation unit and a power supply unit, wherein the test chamber body is an airtight chamber body, a transparent window is arranged on the side wall of the test chamber body, the sealing unit comprises a first isolation door and a second isolation door, the first isolation door is installed on one side wall of the test chamber body, the second isolation door is located inside the test chamber body, the second isolation door isolates the inner space of the test chamber body into a test space and a buffer space, the first isolation door is communicated with the buffer space, the ventilation unit comprises an air conveying device and a pipeline communicated with a safe air source, the air inlet of the air conveying device is communicated with the pipeline, and the air outlet of the air conveying device is communicated with the test space.
In an implementation manner of the embodiment of the present invention, the transparent window is a recessed structure, the recessed structure is recessed toward the inside of the test chamber body, and the recessed structure is used for accommodating a pipeline to be tested.
In another implementation manner of the embodiment of the present invention, the cross section of the recessed structure is arc-shaped, or the cross section of the recessed structure is rectangular.
In another implementation manner of the embodiment of the present invention, the ventilation unit further includes a pressure limiting pipeline, the pressure limiting pipeline is connected between the air outlet and the test space, and the pressure limiting pipeline is used for adjusting the pressure of the air conveyed by the air conveying device to a set pressure.
In another implementation manner of the embodiment of the present invention, the ventilation unit further includes a pressure regulating device, the pressure regulating device is located in the test space, and the pressure regulating device is configured to regulate the pressure in the test space, so that the pressure in the test space is higher than the pressure in the external environment by at least a preset pressure value.
In another implementation of the embodiment of the present invention, the ventilation unit further includes an air conditioning device located in the test space, and the air conditioning device is configured to adjust the temperature and humidity in the test space.
In another implementation manner of the embodiment of the present invention, the test chamber further includes a sliding unit, and the sliding unit is configured to control the test chamber to move along an axial direction of the pipeline to be tested.
In another implementation manner of the embodiment of the present invention, the sliding unit includes: the test chamber comprises a slide rail, a pulley capable of sliding along the slide rail and a pulley seat, wherein the pulley seat is positioned at the bottom of the test chamber, the pulley is rotatably installed on the pulley seat, and the extending direction of the slide rail is the same as the axial direction of a pipeline to be tested.
In another implementation manner of the embodiment of the present invention, a detection device and an alarm device for detecting a concentration of a gas component are disposed in the test space, the alarm device is electrically connected to the detection device, and the alarm device is configured to send an alarm signal according to a detection result of the detection device.
In another implementation manner of the embodiment of the invention, the bulkhead of the test chamber is made of a double-layer steel plate sandwiched flame-retardant foamed plate.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the test chamber comprises a test chamber body, a sealing unit, a ventilation unit and a power supply unit, wherein the test chamber body is a closed chamber body, the sealing performance of a test space is ensured to a certain extent, and a transparent window is arranged on the side wall of the test chamber body, so that particle imaging test equipment and laser Doppler test equipment in the test chamber can detect a pipeline to be tested through the test chamber, and the visual function of the test chamber is realized. And sealed unit includes first insulated door and second insulated door, the second insulated door is located inside the test chamber body, the second insulated door keeps apart the inner space of test chamber body into test space and buffer space, first insulated door and buffer space intercommunication, when the staff passes in and out the test chamber, make outside air can advance into buffer space, therefore make outside air can not get into test space easily, thereby prevent that the combustible gas (like the natural gas) that exists from sneaking into test space in the outside air, improve the security of test chamber. Meanwhile, the ventilation unit is used for introducing safe air into the test space, so that air in the external environment of the test chamber can be effectively prevented from entering the test space, and the safety of the test chamber is enhanced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a test chamber for natural gas flow field testing according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a positional relationship between a test chamber and a pipe to be tested according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a positional relationship between a test chamber and a pipe to be tested according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a positional relationship between a test chamber and a pipe to be tested according to an embodiment of the present invention.
The symbols in the figures represent the following:
1-a pipeline to be tested, 2-a test chamber body, 21-a transparent window, 211-a first window plate, 212-a second window plate, 213-a third window plate, 22-a test space, 23-a buffer space, 31-a first isolating door, 32-a second isolating door, 41-an air conveying device, 42-a pressure regulating device, 43-an air regulating device and 5-a detection device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a test chamber for natural gas flow field testing according to an embodiment of the present invention. As shown in fig. 1, the test chamber includes: the test chamber comprises a test chamber body 2, a sealing unit, a ventilation unit and a power supply unit. The test chamber body 2 is a closed chamber body, and a transparent window 21 is arranged on the side wall of the test chamber body 2. The sealing unit comprises a first isolation door 31 and a second isolation door 32, the first isolation door 31 is installed on one side wall of the test chamber body 2, the second isolation door 32 is located inside the test chamber body 2, the second isolation door 32 isolates the inner space of the test chamber body 2 into a test space 22 and a buffer space 23, and the first isolation door 31 is communicated with the buffer space 23. The ventilation unit comprises an air conveying device 41 and a pipeline communicated with a safe air source, an air inlet of the air conveying device 41 is communicated with the pipeline, and an air outlet of the air conveying device 41 is communicated with the test space 22.
The test chamber comprises a test chamber body, a sealing unit, a ventilation unit and a power supply unit, wherein the test chamber body is a closed chamber body, the sealing performance of a test space is ensured to a certain extent, and a transparent window is arranged on the side wall of the test chamber body, so that particle imaging test equipment and laser Doppler test equipment in the test chamber can detect a pipeline to be tested through the test chamber, and the visual function of the test chamber is realized. And sealed unit includes first insulated door and second insulated door, the second insulated door is located inside the test chamber body, the second insulated door keeps apart the inner space of test chamber body into test space and buffer space, first insulated door and buffer space intercommunication, when the staff passes in and out the test chamber, make outside air can advance into buffer space, therefore make outside air can not get into test space easily, thereby prevent that the combustible gas (like the natural gas) that exists from sneaking into test space in the outside air, improve the security of test chamber. Meanwhile, the ventilation unit is used for introducing safe air into the test space, so that air in the external environment of the test chamber can be effectively prevented from entering the test space, and the safety of the test chamber is enhanced.
The test chamber body can be a cavity which is hollow inside and has a continuous closed outer surface so that the outer space is not communicated with the inner space. For example, the test chamber may be a hollow hexahedron, tetrahedron, cylinder, sphere, or the like. All the cavities meeting the requirements of hollow and closed inner parts can be used as test chamber bodies, and the embodiment is not limited.
In this embodiment, the air delivery device 41 may be a blower, which provides safe air to the test chamber through a pipeline. For example, the ventilation unit may compress and deliver safe air a distance of several kilometers from the test bay into the test space 22 of the test bay. Wherein the test chamber further has an exhaust port configured to unilaterally exhaust gas from the test chamber to prevent air in the environment outside the test chamber from entering the test space 22. The power supply unit is used for supplying electric energy to the test chamber and each unit in the test chamber. For example, the power supply unit may include an explosion-proof external power supply socket mechanism, an indoor power distribution cabinet mechanism, a distribution line mechanism, and an indoor socket mechanism, and may be provided with an appliance main ground terminal and a case ground terminal.
Optionally, the transparent window 21 is a recessed structure, the recessed structure is recessed towards the inside of the test chamber body 2, and the recessed structure is used for accommodating the pipeline 1 to be tested. In this embodiment, both the particle imaging velocity measurement method and the laser doppler velocity measurement method are non-contact tests, and both require to polish the test area to illuminate the test area. Therefore, in order to conveniently drive the laser into the pipeline 1 to be tested from the test chamber, the transparent window 21 is arranged to be a sunken structure, so that the transparent window 21 covers the pipeline 1 to be tested, and the laser can be conveniently driven into the pipeline 1 to be tested from a required angle in the test chamber.
In an implementation manner of the embodiment, a cross section of the recessed structure is rectangular, as shown in fig. 2, the transparent window 21 is disposed at a corner position of the test chamber body 2, the transparent window 21 may include a first window plate 211 and a second window plate 212 whose sides are connected, each of the first window plate 211 and the second window plate 212 includes a first side and a second side opposite to each other, the two first sides are connected, a distance L1 from a second side of the first window plate 211 to the second window plate 212 is not less than a diameter of the pipe 1 to be tested, and a distance L2 from a second side of the second window plate 212 to the first window plate 211 is not less than the diameter of the pipe 1 to be tested. So that the pipe 1 to be tested is enclosed in a transparent window 21 recessed in the test chamber.
In another implementation manner of this embodiment, the cross section of the recessed structure is rectangular, as shown in fig. 3, the transparent window 21 is disposed at a side and non-side edge position of the test chamber body 2, the transparent window 21 may include a first window plate 211, a second window plate 212, and a third window plate 213, the sides of which are connected, the first window plate 211, the second window plate 212, and the third window plate 213 each include a first side and a second side plate, the second side of the first window plate 211 is connected to the first side of the second window plate 212, the second side of the second window plate 212 is connected to the first side of the third window plate, a distance L3 from the first side of the first window plate 211 to the second window plate 212, a distance L4 from the second side of the third window plate 213 to the second window plate 212, and a distance L5 between the first side of the second window plate 212 and the second side are not less than a diameter of the pipe 1 to be tested. So that the pipeline 1 to be tested is covered in the transparent window 21 in the sunken and testing cabin 1.
In another implementation of this embodiment, the recessed feature has an arc-shaped cross-section. As shown in fig. 4, the transparent window 21 may be arc-shaped, and the arc where the transparent window 21 is located is concentric with the arc corresponding to the pipeline 1 to be tested, so that the pipeline 1 to be tested is wrapped in the transparent window 21 recessed in the testing chamber, and the laser can be conveniently driven into the pipeline 1 to be tested from a required angle in the testing chamber.
Optionally, the ventilation unit further includes a pressure limiting pipeline, the pressure limiting pipeline is communicated with the air outlet, and the pressure limiting pipeline is used for adjusting the air conveyed by the air conveying device 41 to a set pressure and conveying the air to the test space 22.
For example, a pressure-limiting pipe may be provided with a pressure-reducing valve, which can reduce the pressure of the gas on the pipe to a set pressure and, depending on the energy of the gas itself, allow the gas to maintain the set pressure flowing from the pressure-limiting pipe to the test space 22.
Optionally, the ventilation unit further comprises a pressure regulating device 42, the pressure regulating device 42 being located within the test space 22, the pressure regulating device 42 being configured to regulate the pressure within the test space 22 such that the pressure within the test space 22 is higher than the pressure of the external environment by at least a preset pressure value. The pressure regulating device 42 is inside the test chamber and is capable of keeping the air pressure in the test space 22 of the test chamber at a preset pressure value higher than the air pressure in the outside environment. For example, the pressure adjusting device 42 may include an air compressor, a pressure detector and a controller, the pressure detector is configured to detect air pressures inside and outside the test chamber, and after the controller obtains the air pressures inside and outside the test chamber, the controller controls the air compressor to operate according to a pressure difference between the air pressures inside and outside the test chamber, so as to adjust the air pressure inside the test chamber until the pressure difference between the air pressures inside and outside the test chamber reaches a preset pressure value. For example, the preset pressure value may be 50Pa. Since the air pressure in the testing space 22 is higher than that in the external environment, the toxic combustible gas is not easy to permeate into the testing space 22, thereby playing the roles of explosion prevention and personal safety protection. In this embodiment, the pressure control device 42 can provide a stable working environment for the operation of the testing device, so as to improve the measurement accuracy.
Optionally, the ventilation unit further comprises an air conditioning device 43, the air conditioning device 43 being located in the test space 22, the air conditioning device 43 being used for conditioning the temperature and humidity in the test space. The air conditioning device can be an explosion-proof air conditioner arranged in the test chamber, and the explosion-proof air conditioner can keep the temperature and the humidity in the test chamber stable. For example, the relative humidity in the test chamber may be maintained at 30% to 50% for the requirements of particle imaging velocimetry and laser doppler velocimetry. The temperature in the test chamber may be maintained at 20 ℃ to 26 ℃ for reasons of working environment comfort.
Optionally, the test chamber further comprises a sliding unit for controlling the test chamber to move along the axial direction of the pipeline to be tested. The test cabin can be flexibly moved through the sliding unit, and the particle imaging speed measurement and the laser Doppler speed measurement can be more flexible and accurate.
In this embodiment, the sliding unit includes: the sliding rail, can follow gliding pulley and the pulley seat of sliding rail, the pulley seat is located the bottom of test cabin, and the pulley rotates to be installed on the pulley seat, and the extending direction of sliding rail is the same with the axial of the pipeline that awaits measuring. After the test cabin is moved to the preset position through the sliding unit, the pulley can be fixed on the sliding rail through the locking mechanism, and therefore relevant tests and observation can be conducted.
Optionally, a detection device 5 for detecting the concentration of the gas component and an alarm device are arranged in the test space 22, the alarm device is electrically connected with the detection device 5, and the alarm device is used for sending an alarm signal according to the detection result of the detection device 5. The detection device 5 can detect gas concentration, smoke and low pressure, and the alarm device obtains a detection result and judges whether to alarm or not according to the detection result. Wherein, detection device 5 can detect at least one of oxygen concentration, methane concentration, carbon dioxide concentration, smog and the low pressure in the test chamber, and alarm device can send alarm signal according to the testing result, can ensure the safety of staff and equipment effectively. The alarm device can comprise audible and visual alarms, and the audible and visual alarms can be arranged inside and outside the test cabin respectively to warn in dangerous conditions.
In this embodiment, the chamber wall of the test chamber can be made of explosion-proof and flame-retardant materials.
Illustratively, the cabin wall of the test cabin is made of a double-layer steel plate sandwiched flame-retardant foam plate so as to ensure that the test cabin has good flame-retardant and explosion-proof effects. At the same time, the test chamber also needs to have sufficient strength, rigidity, and stability.
In this embodiment, when performing particle imaging velocimetry and laser doppler velocimetry measurement in the test chamber, it is particularly necessary to control the rigidity, flatness and failure stability of the base of the placement portion of the particle imaging velocimetry and laser doppler velocimetry equipment and the bottom plate of the test chamber. For example, the test chamber has an elastic deformation of the order of less than 0.1 mm. And the elastic deformation of the bottom plate can be 0.01 to 0.05 mm.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A test chamber for natural gas flowfield testing, the test chamber comprising: a test chamber body (2), a sealing unit, a ventilation unit and a power supply unit,
the test chamber comprises a test chamber body (2), and is characterized in that the test chamber body (2) is a closed chamber body, a transparent window (21) is arranged on the side wall of the test chamber body (2), the transparent window (21) is of a recessed structure, the recessed structure is recessed towards the inside of the test chamber body (2), the recessed structure is used for accommodating a pipeline (1) to be tested, the cross section of the recessed structure is arc-shaped or rectangular, and when the cross section of the recessed structure is arc-shaped, the transparent window (21) is located at the corner position of the test chamber body (2); when the cross section of the recessed structure is rectangular, the transparent window (21) is positioned at the corner of the test chamber body (2) or at the side surface of the test chamber body (2) and the position of the non-side edge,
the sealing unit comprises a first isolation door (31) and a second isolation door (32), the first isolation door (31) is installed on one side wall of the test chamber body (2), the second isolation door (32) is located inside the test chamber body (2), the second isolation door (32) isolates the inner space of the test chamber body (2) into a test space (22) and a buffer space (23), the first isolation door (31) is communicated with the buffer space (23),
the ventilation unit comprises an air conveying device (41) and a pipeline communicated with a safe air source, an air inlet of the air conveying device (41) is communicated with the pipeline, and an air outlet of the air conveying device (41) is communicated with the test space (22).
2. Test chamber according to claim 1, wherein the ventilation unit further comprises a pressure limiting line connected between the air outlet and the test space (22), the pressure limiting line being adapted to adjust the pressure of the air delivered by the air delivery device (41) to a set pressure.
3. Test chamber according to claim 1, wherein the ventilation unit further comprises a pressure regulating device (42), the pressure regulating device (42) being located within the test space (22), the pressure regulating device (42) being adapted to regulate the pressure within the test space (22) such that the pressure within the test space (22) is higher than the pressure of the external environment by at least a preset pressure value.
4. Test chamber according to claim 1, wherein the ventilation unit further comprises an air conditioning device (43), the air conditioning device (43) being located in the test space (22), the air conditioning device (43) being used for regulating the temperature and humidity in the test space.
5. The test capsule according to claim 1, further comprising a sliding unit for controlling the axial movement of the test capsule along the pipe under test.
6. The test chamber of claim 5, wherein the sliding unit comprises: the test chamber comprises a slide rail, a pulley capable of sliding along the slide rail and a pulley seat, wherein the pulley seat is positioned at the bottom of the test chamber, the pulley is rotatably installed on the pulley seat, and the extending direction of the slide rail is the same as the axial direction of a pipeline to be tested.
7. Test chamber according to any of claims 1 to 6, characterized in that a detection device (5) for detecting the concentration of a gas component and an alarm device are arranged in the test space (22), the alarm device being electrically connected to the detection device (5) and the alarm device being adapted to emit an alarm signal depending on the detection result of the detection device (5).
8. The test chamber according to any one of claims 1 to 6, wherein the chamber wall of the test chamber is made of a double-layer steel plate sandwiched flame-retardant foamed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691201.3A CN112304560B (en) | 2019-07-29 | 2019-07-29 | Test cabin for testing natural gas flow field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691201.3A CN112304560B (en) | 2019-07-29 | 2019-07-29 | Test cabin for testing natural gas flow field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112304560A CN112304560A (en) | 2021-02-02 |
| CN112304560B true CN112304560B (en) | 2022-11-04 |
Family
ID=74330041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910691201.3A Active CN112304560B (en) | 2019-07-29 | 2019-07-29 | Test cabin for testing natural gas flow field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112304560B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113112684A (en) * | 2021-05-08 | 2021-07-13 | 中煤科工能源科技发展有限公司 | Underground unmanned vending machine and vending method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018143A (en) * | 2016-05-11 | 2016-10-12 | 浙江理工大学 | Design method for visualization pipeline flowing wear testing device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598666B (en) * | 2009-06-26 | 2010-09-08 | 中北大学 | Gas concentration detection system capable of working under explosion environment of explosive |
| CN202648041U (en) * | 2012-04-11 | 2013-01-02 | 中国石油集团工程设计有限责任公司 | Anti-explosion positive draft device in oil and gas environment |
| CN103575476B (en) * | 2013-11-19 | 2016-05-18 | 北京航星网讯技术股份有限公司 | Natural gas leaking checkout gear and method |
| JP2015206689A (en) * | 2014-04-21 | 2015-11-19 | 株式会社フローテック・リサーチ | Method and apparatus for measuring flow rate of visualized fluid |
| CN208419072U (en) * | 2018-03-10 | 2019-01-22 | 卫金平 | A kind of anti-explosion safety system in petroleum environments |
| CN209145357U (en) * | 2018-11-09 | 2019-07-23 | 烟台欧鹏防爆仪器有限公司 | A kind of positive pressure type destatics explosion-proof room |
-
2019
- 2019-07-29 CN CN201910691201.3A patent/CN112304560B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018143A (en) * | 2016-05-11 | 2016-10-12 | 浙江理工大学 | Design method for visualization pipeline flowing wear testing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112304560A (en) | 2021-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101777030B1 (en) | Method and device for determining and/or monitoring the airtightness of an enclosed room | |
| CN104122369B (en) | Smoke detection unit, smoke detection system and smoke detector | |
| CN112304560B (en) | Test cabin for testing natural gas flow field | |
| AU2013220152A1 (en) | Control system with pressure differential module operating with pressure sensing and air speed sensors | |
| US20130153060A1 (en) | Gas monitoring system with oxygen control for human life support in enclosed refuge spaces | |
| CN202866336U (en) | Small size multipurpose anti-explosion instrument chamber | |
| CN103940062B (en) | Electric appliance box and safety control method thereof, and air conditioner adopting combustible refrigerant | |
| WO2016108953A1 (en) | Methods and systems for monitoring a leak rate of a transport unit | |
| CN105259308B (en) | Test system for effect of eliminating leaked ammonia gas by water curtain | |
| CN109285323A (en) | A kind of flammable gas alarm | |
| CN102373946B (en) | Mine movable rescue capsule and rescue method | |
| CN207037895U (en) | Gas alarm calibrating installation interlocking protective device | |
| CN204044126U (en) | Gas alarm checking box | |
| CN207115707U (en) | Rail mounted monitoring harmful gases device based on Internet of Things | |
| CN112304558B (en) | Test system for testing natural gas flow field | |
| CN102095559B (en) | Calibration device of on-line SF6 (sulfur hexafluoride)-O2 leak monitoring alarm | |
| CN206770995U (en) | A kind of gas pipeline leakage detection means | |
| CN112763684B (en) | Mixing device for wet natural gas detection and wet natural gas detection system | |
| CN112763683B (en) | Mixing device for wet natural gas detection and wet natural gas detection system | |
| KR20170007014A (en) | the portable oxygen supply system for the Prevention of suffocation | |
| US20240001169A1 (en) | Method and system of air parameter based automatic purging of breathable air within a firefighter air replenishment system | |
| CN211223182U (en) | Command vehicle containing positive-pressure electric control system | |
| CN211648254U (en) | Integrated mine safety monitoring device | |
| CN218934733U (en) | Compressor and air conditioning system | |
| CN220398797U (en) | Major hazard source monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |