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Pitot tube for measuring average pressure

An average pressure, Pitot tube technology, applied in the direction of measuring fluid pressure, measuring devices, simultaneous measurement of multiple hydraulic valves, etc., can solve the problems of unstable and uneven fluid flow state, cumbersome and time-consuming operation process, etc., to increase detection Dimensions, reduce human error, improve the effect of detection area

Pending Publication Date: 2022-06-07
SHANGHAI NAUTILUS GENERAL EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The L-shaped Pitot tube in the above-mentioned related technology has only one detection head, that is, it can only measure the total pressure, static pressure or dynamic pressure of one position point at a time; because the fluid flow state on the measurement surface in the pipeline is generally unstable And uneven, so on the measurement plane at this position, it is necessary to repeatedly adjust the position of the probe of the Pitot tube to obtain the corresponding pressure values ​​of each point, and then calculate the average value to obtain the pressure on the measurement plane at this position. The average pressure, the operation process is cumbersome and time-consuming, there is room for improvement

Method used

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  • Pitot tube for measuring average pressure
  • Pitot tube for measuring average pressure
  • Pitot tube for measuring average pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to figure 1 and figure 2 , the pit tube for measuring the average pressure includes a rod body 1, a stagnant pressure flow channel 11 is opened in the middle of the rod body 1, and a static pressure flow channel 12 is opened on the peripheral side of the rod body 1 at the stagnant pressure flow channel 11; The main rod collection part 2 and the support rod confluence part 3. The strut converging part 3 realizes the data collection of stagnation pressure and static pressure at multiple positions of the fluid, and confluences it to the main rod collecting part 2 for collection and output of the average value.

[0043] refer to figure 1 and figure 2 , the strut confluence portion 3 is provided with a plurality of detection heads 4 with the same orientation and parallel arrangement along the vertical direction, any detection head 4 is provided with a stagnation pressure hole 41 and a static pressure hole 42, and the stagnation pressure hole 41 is located at the ...

Embodiment 2

[0050] refer to image 3 , the difference between this embodiment and Embodiment 1 is that,

[0051] The strut confluence portion 3 also includes a transverse confluence bar 32 that communicates with the vertical confluence bar. Several vertical confluence bars are arranged along the length direction of the transverse confluence bar 32. In the implementation of this application, the number of vertical confluence bars is set to four. , and the four vertical bus bars 31 can be arranged at equidistant or non-equidistant distances according to the application. Correspondingly, the detection heads 4 on any vertical bus bar 31 are arranged in multiples along its vertical direction. This application In implementation, the number of detection heads 4 on any vertical confluence bar 31 is set to four; that is, a rectangular detection plane is formed between the transverse confluence bar 32 and the vertical confluence bar, and the fluid pressure in the detection plane is detected. , inc...

Embodiment 3

[0053] refer to Figure 4 , the difference between this embodiment and Embodiment 1 is that,

[0054] The strut converging portion 3 includes a plurality of first arc-shaped converging rods 33 arranged concentrically and on the same plane. The first arc-shaped converging rods 33 can be set as a semi-circular arc segment or a full circular arc segment. The first arc-shaped bus bar 33 provided in the shape of the first arc bus bar 33 is used as an example to illustrate, and in the embodiment of the present application, there are three first arc bus bar 33, and the detection head 4 has a plurality of detection heads 4 on any first arc bus bar 33. , the detection heads 4 on the three first arc-shaped bus bars 33 are distributed along the radial direction of the first arc-shaped bus bars 33 and are located in the same radial plane, and the number of detection heads 4 in the same radial plane is the same.

[0055] A plurality of first arc-shaped confluence rods 33 that are concentr...

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Abstract

The invention relates to a Pitot tube for measuring average pressure, which comprises a rod body, a stagnation pressure flow channel and a static pressure flow channel are arranged in the rod body, the rod body comprises a main rod collection part and a branch rod confluence part which are communicated, the main rod collection part is provided with a static pressure interface and a stagnation pressure interface, and the branch rod confluence part is provided with a static pressure flow channel and a static pressure flow channel. A plurality of detection heads facing the same direction are arranged at intervals on the convergence part of the support rod along the vertical direction, any one of the detection heads is provided with stagnation pressure holes and static pressure holes, all the stagnation pressure holes are located in the same plane and face the same direction, and all the static pressure holes are located in the same plane and face the same direction. The orientation of the stagnation pressure hole is perpendicular to the orientation of the static pressure hole, the stagnation pressure hole, the stagnation pressure flow channel and the stagnation pressure interface are communicated, the static pressure hole, the static pressure flow channel and the static pressure interface are communicated, and the main rod collection part is provided with a correction rod with the same orientation as the detection head. The detection operation steps are simplified.

Description

technical field [0001] The invention relates to the technical field of pitot tube measurement, in particular to a pitot tube for measuring average pressure. Background technique [0002] In most fluid transportation occasions, it is necessary to monitor the pressure of the transportation equipment or system during the fluid transportation process, or to perform real-time measurement on the site where necessary, such as the pump operation site, to measure whether the pump lift meets the customer's transportation requirements. Pressure demand; at the fan operation site, measure whether the fan operation and the pipeline pressure of the conveying medium can reach the pressure required by the customer, etc. [0003] In the related art, as shown in Figure X, there is an L-shaped pit tube, which includes a main body, the main body includes a horizontal section and a vertical section that are integrally formed and vertically arranged, the end of the horizontal section is provided w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L15/00G01L19/08G01L19/00
CPCG01L15/00G01L19/08G01L19/00Y02E30/30
Inventor 曹晨阳韩泳涛金守清张劲戈
Owner SHANGHAI NAUTILUS GENERAL EQUIP MFG CO LTD
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