CN215910514U - Pipeline flue gas velocity of flow measuring device - Google Patents
Pipeline flue gas velocity of flow measuring device Download PDFInfo
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- CN215910514U CN215910514U CN202122308678.4U CN202122308678U CN215910514U CN 215910514 U CN215910514 U CN 215910514U CN 202122308678 U CN202122308678 U CN 202122308678U CN 215910514 U CN215910514 U CN 215910514U
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Abstract
The utility model discloses a device for measuring the flow velocity of flue gas in a pipeline, and relates to the technical field of flow velocity detection. The utility model aims to provide a pipeline flue gas flow velocity measuring device, which comprises a telescopic rod component and a flow velocity detection component; the telescopic link subassembly includes first telescopic link, the second telescopic link, first telescopic link is the cavity pole, the second telescopic link outside is located to first telescopic link cover, velocity of flow determine module sets up the tip of keeping away from first telescopic link at the second telescopic link, velocity of flow determine module is arranged in stretching into the pipeline that awaits measuring from the test hole of the pipeline that awaits measuring, with the velocity of flow of measuring the interior flue gas of pipeline that awaits measuring, pipeline flue gas velocity of flow measuring device can adapt to the pipeline of different pipe diameters and adjustable velocity of flow in order to measure different positions in the pipeline, improve measuring result's accuracy.
Description
Technical Field
The utility model relates to the technical field of flow velocity detection, in particular to a device for measuring the flow velocity of flue gas in a pipeline.
Background
Automatic flue gas Monitoring System (Continuous Emission Monitoring System), namely CEMS System, refers to air pollutionThe concentration and the total emission amount of gaseous pollutants and particulate matters emitted by the source are continuously monitored, and the information is transmitted to a system of a competent department in real time. Wherein the flue gas refers to the waste gas pollution produced in the production process of enterprises, including: SO (SO)2、NOxParticulate matter, and the like.
In the prior art, a CEMS system usually adopts a pitot tube with a fixed length to detect the flue gas flow velocity in a pipeline. However, in practical application, because the pipe diameters of the measuring pipelines are different, when the pipe diameter of the measuring pipeline is larger, the fixed-length pitot tube can only measure the flow velocity near the pipe wall at the insertion end.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pipeline flue gas flow velocity measuring device which can adapt to pipelines with different pipe diameters and can be adjusted to measure the flow velocity of different positions in the pipelines, so that the accuracy of a measuring result is improved.
The embodiment of the utility model is realized by the following steps:
the utility model provides a pipeline flue gas flow velocity measuring device, which comprises a telescopic rod component and a flow velocity detection component, wherein the telescopic rod component is arranged on the pipeline flue gas flow velocity measuring device; the telescopic link subassembly includes first telescopic link, second telescopic link, and first telescopic link is the cavity pole, and the second telescopic link outside is located to first telescopic link cover, and the velocity of flow detection subassembly sets up the tip of keeping away from first telescopic link at the second telescopic link, and the velocity of flow detection subassembly is arranged in stretching into the pipeline that awaits measuring from the test hole of the pipeline that awaits measuring to measure the velocity of flow of flue gas in the pipeline that awaits measuring.
Optionally, the pipe flue gas flow velocity measuring device further comprises a differential pressure transmitter; the flow velocity detection assembly comprises a dynamic pressure measuring pipe, a static pressure measuring pipe, a first pressure guiding pipe and a second pressure guiding pipe; pressure differential transmitter sets up in first telescopic link outside, and the dynamic pressure is measured the pipe and is connected with pressure differential transmitter through first drawing, and static pressure is measured the pipe and is connected with pressure differential transmitter through the second drawing, and first drawing is pressed the pipe and is used for measuring the total pressure information in the pipeline that awaits measuring to pressure differential transmitter transmission dynamic pressure survey pipe, and the second is drawn and is pressed the pipe and is used for measuring the static pressure information in the pipeline that awaits measuring to pressure differential transmitter transmission static pressure survey pipe.
Optionally, a second telescopic rod of the pipeline flue gas flow velocity measuring device is a hollow rod, and the first pressure guiding pipe and the second pressure guiding pipe penetrate through cavities of the first telescopic rod and the second telescopic rod and are connected with the differential pressure transmitter.
Optionally, the opening direction of the dynamic pressure measuring pipe of the pipeline flue gas flow velocity measuring device is parallel to the flow direction of the flue gas and faces the flow direction of the flue gas, and the opening direction of the static pressure measuring pipe is opposite to the opening direction of the dynamic pressure measuring pipe.
Optionally, the dynamic pressure measuring tube of the pipeline flue gas flow velocity measuring device has an opening direction parallel to the flow direction of the flue gas and facing the flow direction of the flue gas, and the static pressure measuring tube has an opening direction perpendicular to the flow direction of the flue gas.
Optionally, the device for measuring the flue gas flow velocity of the pipeline further comprises a sealing ring sleeved on the first telescopic rod, and the sealing ring is used for sealing between the first telescopic rod and the test hole when the first telescopic rod penetrates through the test hole and is installed on the pipeline to be tested.
Optionally, the second telescopic link of pipeline flue gas velocity of flow measuring device includes a plurality ofly, and a plurality of second telescopic links cup joint in proper order, measures the tip that detection subassembly set up in the minimum second telescopic link of external diameter.
Optionally, a first bushing is arranged inside a first telescopic rod of the flue gas flow velocity measuring device, a second bushing is arranged outside a second telescopic rod, and the second bushing penetrates through the first bushing and extends to the inner side of the first telescopic rod.
Optionally, a first bushing of the flue gas flow velocity measuring device is disposed at an end of the first telescopic rod, and a second bushing is disposed at an end of the second telescopic rod.
Optionally, the outer diameter of the second bushing of the flue gas flow velocity measurement device of the duct is equal to the inner diameter of the first telescopic rod.
The beneficial effects of the utility model include:
the flue gas flow velocity measuring device provided by the embodiment of the utility model comprises a telescopic rod component and a flow velocity detection component connected to the telescopic rod component. The telescopic rod assembly comprises a first telescopic rod and a second telescopic rod, the first telescopic rod is a hollow rod, the second telescopic rod is sleeved with the first telescopic rod, and the relative distance between the first telescopic rod and the second telescopic rod is adjusted to change the length of the telescopic rod assembly. The telescopic rod assemblies with different lengths can adapt to pipelines with different pipe diameters during measurement so as to measure the flow velocity at different positions in the pipelines. The velocity of flow measuring unit sets up the tip of keeping away from first telescopic link at the second telescopic link, stretches into the inside of the pipeline that awaits measuring under the drive of telescopic link subassembly to detect the velocity of flow of flue gas in the pipeline. When using, the user is according to the length that the position adjusted telescopic link subassembly will be located, then operates telescopic link subassembly and drives the velocity of flow determine module and stretch into the pipeline that awaits measuring from the test hole of the pipeline that awaits measuring, and wherein first telescopic link is connected with the test hole to guarantee when the test sealed to the pipeline. Therefore, the flue gas flow velocity measuring device for the pipeline, provided by the utility model, can adapt to pipelines with different pipe diameters and can be adjusted to measure the flow velocity at different positions in the pipeline, so that the accuracy of a measuring result is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a flue gas flow rate measuring device for a pipeline according to an embodiment of the present invention;
FIG. 2 is a second schematic structural diagram of a flue gas flow rate measuring device for a pipeline according to an embodiment of the present invention;
FIG. 3 is a third schematic structural diagram of a flue gas flow rate measuring device of a pipeline according to an embodiment of the present invention;
FIG. 4 is a fourth schematic view of a flue gas flow rate measuring device for a pipeline according to an embodiment of the present invention;
FIG. 5 is a fifth schematic view of a flue gas flow rate measuring device for a pipeline according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a telescopic rod assembly of a flue gas flow velocity measuring apparatus for a pipeline according to an embodiment of the present invention.
Icon: 100-a pipeline to be tested; 110-test wells; 200-a telescopic rod assembly; 210-a first telescoping rod; 220-a second telescopic rod; 300-a flow rate detection assembly; 310-dynamic pressure measuring tube; 320-static pressure measuring tube; 330-a first pressure drawing pipe; 340-a second pressure drawing pipe; 400-differential pressure transmitter; 500-sealing ring; 600-a first bushing; 700-second liner.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment of the utility model provides a pipeline flue gas flow velocity measuring device which can adapt to pipelines with different pipe diameters and can be adjusted to measure the flow velocity of different positions in the pipelines, and the accuracy of a measuring result is improved. Embodiments of the present application are described below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a flue gas flow rate measuring device for a pipeline, which includes a telescopic rod assembly 200 and a flow rate detection assembly 300; the telescopic rod assembly 200 comprises a first telescopic rod 210 and a second telescopic rod 220, the first telescopic rod 210 is a hollow rod, the first telescopic rod 210 is sleeved on the outer side of the second telescopic rod 220, the flow velocity detection assembly 300 is arranged at the end part of the second telescopic rod 220 far away from the first telescopic rod 210, and the flow velocity detection assembly 300 is used for stretching into the pipeline to be detected from the test hole 110 of the pipeline to be detected so as to measure the flow velocity of smoke in the pipeline to be detected 100.
In the flue gas flow rate measuring device provided in the embodiment of the present invention, the specific connection form between the first telescopic rod 210 and the second telescopic rod 220 is not limited, as long as the first telescopic rod 210 is sleeved outside the second telescopic rod 220, and the first telescopic rod 210 and the second telescopic rod 220 can fix the relative distance after being extended and retracted. Exemplarily, the outer axial surface of the first telescopic rod 210 is provided with a plurality of first through holes uniformly and at intervals along the axial direction, the outer axial surface of the second telescopic rod 220 is provided with a second through hole, a spring is arranged in the second telescopic rod 220, one end of the spring is connected with the inner wall of the second telescopic rod 220, the other end of the spring is connected with a protrusion, and the protrusion can extend out of the second through hole and the first through hole in sequence so as to fix the first telescopic rod 210 and the second telescopic rod 220. When the telescopic rod assembly is used, the protrusion is pressed first, the protrusion drives the spring to compress, the spring accumulates elastic potential energy, then the first telescopic rod 210 slides relative to the second telescopic rod 220 to the length of the telescopic rod assembly 200 to meet the length required in measurement, then the protrusion is loosened, the spring releases the elastic potential energy, the elastic potential energy of the spring enables the spring to extend, and the spring drives the protrusion to sequentially penetrate through the second through hole and the first through hole so as to fix the relative distance between the first telescopic rod 210 and the second telescopic rod 220.
When the device for measuring the flue gas flow rate of the pipeline provided by the embodiment of the utility model is used, the relative positions of the first telescopic rod 210 and the second telescopic rod 220 are adjusted according to the position to be measured, and then the telescopic rod assembly 200 and the flow rate detection assembly 300 are extended into the pipeline 100 to be measured from the test hole 110 of the pipeline 100 to be measured, wherein the first telescopic rod 210 is connected with the test hole 110. Wherein, it should be noted that, when adjusting the relative distance of first telescopic link 210 and second telescopic link 220, can not make telescopic link subassembly 200 overlength, keep predetermineeing the within range can, avoid when the test, make second telescopic link 220 and test union coupling, can lead to pipeline flue gas velocity of flow measuring device's leakproofness not good when measuring like this to influence measuring accuracy.
The flue gas flow velocity measuring device provided by the embodiment of the utility model comprises a telescopic rod assembly 200 and a flow velocity detection assembly 300 connected to the telescopic rod assembly 200. The telescopic rod assembly 200 comprises a first telescopic rod 210 and a second telescopic rod 220, the first telescopic rod 210 is a hollow rod, the second telescopic rod 220 is sleeved with the first telescopic rod 210, and the relative distance between the first telescopic rod 210 and the second telescopic rod 220 is adjusted to change the length of the telescopic rod assembly 200. The telescopic rod assemblies 200 of different lengths can be adapted to pipes of different pipe diameters during measurement to measure flow rates at different locations within the pipe. The velocity of flow measuring assembly sets up the tip of keeping away from first telescopic link 210 at second telescopic link 220, stretches into the inside of the pipeline that awaits measuring under telescopic link assembly 200's drive to detect the velocity of flow of flue gas in the pipeline. When using, the user adjusts the length of telescopic link subassembly 200 according to the position of will finding, then operates telescopic link subassembly 200 and drives flow velocity detection subassembly 300 and stretch into to be measured in pipeline 100 from the test hole 110 of pipeline 100 that awaits measuring, and wherein first telescopic link 210 is connected with test hole 110 to guarantee when testing sealed to the pipeline. Therefore, the flue gas flow velocity measuring device for the pipeline, provided by the utility model, can adapt to pipelines with different pipe diameters and can be adjusted to measure the flow velocity at different positions in the pipeline, so that the accuracy of a measuring result is improved.
It should be noted that, in the flue gas flow rate measuring device provided in the embodiment of the present invention, the specific structure type of the flow rate detecting assembly 300 is not limited, and the flow rate detecting assembly 300 may be a commercially available positive displacement type flow rate meter, an impeller type flow rate meter, a differential pressure type flow rate meter, a variable area type flow rate meter, a momentum type flow rate meter, an impulse type flow rate meter, an electromagnetic flow rate meter, an ultrasonic flow rate meter, or the like. In an alternative embodiment of the utility model, the pitot tube flow meter in a differential pressure flow meter is exemplified.
As shown in fig. 2, in an alternative embodiment provided by the present invention, the flue gas flow rate measurement device of the duct further comprises a differential pressure transmitter 400; the flow rate detection assembly 300 comprises a dynamic pressure measuring pipe 310, a static pressure measuring pipe 320, a first pressure guiding pipe 330 and a second pressure guiding pipe 340; pressure differential transmitter 400 sets up in first telescopic link 210 outsidely, and the dynamic pressure is surveyed the pipe 310 and is connected with pressure differential transmitter 400 through first pressure pipe 330 that draws, and the static pressure is surveyed the pipe 320 and is drawn through the second and press pipe 340 and be connected with pressure differential transmitter 400, and first pressure pipe 330 that draws is used for transmitting the total pressure information in the pipeline 100 that awaits measuring of dynamic pressure survey pipe 310 measurement to pressure differential transmitter 400, and the second is drawn and is pressed pipe 340 and be used for transmitting the static pressure information in the pipeline 100 that awaits measuring of static pressure survey pipe 320 measurement to pressure differential transmitter 400.
It should be noted that when the flue gas flow rate measuring device of the pipe shown in fig. 2 is used, it is necessary to place the differential pressure transmitter 400 outside the pipe 100 to be measured to observe the measured result.
The principle of measuring the flue gas flow rate by the flue gas flow rate measuring device of the pipeline shown in FIG. 2 is as follows: the total pressure information detected by the dynamic pressure measuring tube 310 is P2The static pressure information detected by the static pressure measuring tube 320 is P1Calculating the difference between total pressure and static pressure to obtain
The flow rate can be obtained by converting the above formula (1)
Where ρ is the density of the flue gas.
The flow rate measuring device as described in fig. 2 has the following advantages: 1. the precision is high, and the accuracy is 0.5% in the range of 20% -100%; 2. the energy is saved, and the operation cost is greatly reduced because the primary measuring element is made of stainless steel with small diameter and the sectional area of the primary measuring element is small, and almost no pressure loss exists in the medium pipeline; 3. high temperature and high pressure resistance; 4. the reliability is high; 5. the installation is simple; 6. the maintenance cost is low; 7. the measuring range is wide, and the method is suitable for measuring low flow velocity, small flow and large pipe diameter flow.
Specifically, as shown in fig. 2, in an alternative embodiment provided by the present invention, the dynamic pressure measurement pipe 310 of the pipe flue gas flow velocity measurement device is opened in a direction parallel to and toward the flow direction of flue gas, and the static pressure measurement pipe 320 is opened in a direction opposite to the opening direction of the dynamic pressure measurement pipe 310. Illustratively, as shown in fig. 1, the flow direction of the flue gas is from top to bottom, and the opening of the dynamic pressure measurement pipe 310 is vertically upward, and the opening of the static pressure measurement pipe 320 is vertically downward.
Specifically, as shown in fig. 3, in an alternative embodiment provided by the present invention, the dynamic pressure measurement pipe 310 of the flue gas flow velocity measurement device is opened in a direction parallel to the flow direction of the flue gas and toward the flow direction of the flue gas, and the static pressure measurement pipe 320 is opened in a direction perpendicular to the flow direction of the flue gas. Illustratively, as shown in fig. 1, the flow direction of the flue gas is from top to bottom, the opening of the dynamic pressure measurement pipe 310 is vertically upward, and the opening of the static pressure measurement pipe 320 is horizontally rightward.
In order to make the structure of the flue gas flow rate measuring device compact and improve the sealing performance of the flue gas flow rate measuring device during measurement, as shown in fig. 2 or fig. 3, in an alternative embodiment provided by the present invention, the second telescopic rod 220 of the flue gas flow rate measuring device is a hollow rod, and the first pressure guiding pipe 330 and the second pressure guiding pipe 340 pass through the cavities of the first telescopic rod 210 and the second telescopic rod 220 to be connected with the differential pressure transmitter 400.
In order to further increase the tightness of the flue gas flow rate measuring device during flue gas flow rate measurement, as shown in fig. 4, in an alternative embodiment provided by the present invention, the flue gas flow rate measuring device further includes a sealing ring 500 sleeved on the first telescopic rod 210, and the sealing ring 500 is used for sealing between the first telescopic rod 210 and the testing hole 110 when the first telescopic rod 210 is installed on the pipe 100 to be tested through the testing hole 110.
The shape of the sealing ring 500 is not limited in the flue gas flow rate measuring device provided by the present invention, as long as the flue gas flow rate measuring device can play a sealing role in measuring the flue gas flow rate, and for example, the sealing ring may be a rubber ring sleeved on the first telescopic rod 210, and the outer diameter of the rubber ring is greater than the outer diameter of the test hole 110. In practical use, the sealing ring 500 may be a wet towel wound around the connection position of the first telescopic rod 210 and the testing hole 110 after the first telescopic rod 210 is connected to the testing hole 110.
As shown in fig. 5, in an alternative embodiment provided by the present invention, the second telescopic rods 220 of the flue gas flow rate measuring device for a pipeline include a plurality of second telescopic rods 220, the plurality of second telescopic rods 220 are sequentially sleeved, and the measuring and detecting component is disposed at an end portion of the second telescopic rod 220 having the smallest outer diameter (i.e., the innermost side).
It should be noted that the number of the second telescopic rods 220 is multiple, so that the length of the telescopic rod assembly 200 can be extended, and thus measurement of flue gas flow rates with more pipe diameters can be satisfied. And for the telescopic link assembly 200 with the same stretching length, a plurality of second telescopic links 220 which are sequentially sleeved are adopted, and when the telescopic link assembly is contracted, the telescopic link assembly occupies less volume so as to be convenient to carry. The connection mode of the plurality of second telescopic rods 220 sleeved in sequence can adopt the connection mode of the first telescopic rod 210 and the second telescopic rod 220.
As shown in fig. 6, in an alternative embodiment provided by the present invention, a first bushing 600 is disposed inside the first telescopic rod 210 of the flue gas flow rate measuring device, a second bushing 700 is disposed outside the second telescopic rod 220, and the second bushing 700 extends through the first bushing 600 to the inside of the first telescopic rod 210.
The first bushing 600 is disposed inside the first telescopic rod 210, and the second bushing 700 is disposed outside the second telescopic rod 220, wherein the second bushing 700 extends into the cavity of the first telescopic rod 210 through the first bushing 600, and when the first telescopic rod 210 and the second telescopic rod 220 are slid, the second bushing 700 abuts against the first bushing 600, so as to prevent the first telescopic rod 210 and the second telescopic rod 220 from being separated.
It should be noted that, in the flue gas flow rate measuring device provided in the present invention, the shapes of the first bushing 600 and the second bushing 700 are not limited, and for example, when the first telescopic rod 210 and the second telescopic rod 220 are cylindrical rods, the first bushing 600 and the second bushing 700 are circular rings respectively sleeved on the first telescopic rod 210 and the second telescopic rod 220.
As shown in fig. 5, in an alternative embodiment provided by the present invention, a first bushing 600 of the flue gas flow rate measuring device is disposed at an end of the first telescopic rod 210, and a second bushing 700 is disposed at an end of the second telescopic rod 220. Therefore, when the first telescopic rod 210 and the second telescopic rod 220 are slid, the telescopic rod assembly 200 can reach the longest length, so that the flue gas flow velocity measuring device for the pipeline can meet the measurement requirements of more different positions during measurement.
As shown in fig. 6, in an alternative embodiment provided by the present invention, the outer diameter of the second bushing 700 of the flue gas flow rate measuring device for a pipeline is approximately equal to the inner diameter of the first telescopic rod 210, and when the first telescopic rod 210 or the second telescopic rod 220 is slid, the second bushing 700 slides against the inner wall of the first telescopic rod 210, thereby ensuring stability during sliding.
The above description is only an alternative embodiment of the present invention, and is not intended to limit the present invention, and various modifications and variations of the present invention may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.
Claims (9)
1. A pipeline flue gas flow velocity measuring device is characterized by comprising a telescopic rod component and a flow velocity detection component;
the telescopic link subassembly includes first telescopic link, second telescopic link, first telescopic link is the cavity pole, first telescopic link cover is located the second telescopic link outside, velocity of flow detection subassembly sets up the second telescopic link is kept away from the tip of first telescopic link, velocity of flow detection subassembly is arranged in stretching into from the test hole of the pipeline that awaits measuring in the pipeline that awaits measuring, in order to measure the velocity of flow of flue gas in the pipeline that awaits measuring.
2. The ducted flue gas flow rate measurement device according to claim 1, further comprising a differential pressure transmitter; the flow velocity detection assembly comprises a dynamic pressure measuring pipe, a static pressure measuring pipe, a first pressure guiding pipe and a second pressure guiding pipe; differential pressure transmitter set up in first telescopic link is outside, the dynamic pressure survey buret passes through first draw press the pipe with differential pressure transmitter connects, the static pressure survey buret passes through the second draw press the pipe with differential pressure transmitter connects, first draw press the pipe be used for to differential pressure transmitter transmission the dynamic pressure survey buret is measured total pressure information in the pipeline that awaits measuring, the second draw press the pipe be used for to differential pressure transmitter transmission the static pressure survey buret is measured static pressure information in the pipeline that awaits measuring.
3. The flue gas flow rate measuring device of claim 2, wherein the second telescopic rod is a hollow rod, and the first pressure guiding pipe and the second pressure guiding pipe penetrate through the cavities of the first telescopic rod and the second telescopic rod and are connected with the differential pressure transmitter.
4. The flue gas velocity measuring apparatus according to claim 2, wherein the dynamic pressure measuring pipe has an opening direction parallel to and facing the flow direction of the flue gas, and the static pressure measuring pipe has an opening direction opposite to the opening direction of the dynamic pressure measuring pipe.
5. The flue gas velocity measuring apparatus according to claim 2, wherein the dynamic pressure measuring tube has an opening in a direction parallel to and toward the flow direction of the flue gas, and the static pressure measuring tube has an opening in a direction perpendicular to the flow direction of the flue gas.
6. The pipeline flue gas flow velocity measuring device according to claim 1, further comprising a sealing ring sleeved on the first telescopic rod, wherein the sealing ring is used for sealing between the first telescopic rod and the test hole when the first telescopic rod passes through the test hole and is installed on the pipeline to be tested.
7. The pipe flue gas flow velocity measuring device according to claim 1, wherein the second telescopic rods comprise a plurality of second telescopic rods which are sequentially sleeved, and the flow velocity detecting assembly is arranged at an end portion of the second telescopic rod with the smallest outer diameter.
8. The ducted flue gas flow velocity measurement apparatus according to claim 1, wherein a first bushing is provided inside the first telescopic rod, and a second bushing is provided outside the second telescopic rod, and the second bushing passes through the first bushing and extends to an inside of the first telescopic rod.
9. The ducted flue gas flow velocity measurement apparatus according to claim 8, wherein the first bushing is provided at an end of the first telescopic rod, and the second bushing is provided at an end of the second telescopic rod.
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| CN202122308678.4U CN215910514U (en) | 2021-09-23 | 2021-09-23 | Pipeline flue gas velocity of flow measuring device |
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