CN1025756C - Flow measurement device for industrial pipeline gas - Google Patents
Flow measurement device for industrial pipeline gas Download PDFInfo
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- CN1025756C CN1025756C CN 91103639 CN91103639A CN1025756C CN 1025756 C CN1025756 C CN 1025756C CN 91103639 CN91103639 CN 91103639 CN 91103639 A CN91103639 A CN 91103639A CN 1025756 C CN1025756 C CN 1025756C
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- pressure
- measuring head
- industrial pipeline
- pipeline
- pressure measuring
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- Measuring Fluid Pressure (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a flow measurement device for industrial pipeline gas, particularly to a dusty gas flow continuous measurement device for industrial pipelines with major diameters. The present invention comprises a pressure measuring head (1), a pressure measuring guide pipe (2) of the pressure measuring head, a pressure measuring guide pipe (3) of a pipe wall, sealing fixing device, etc., wherein the pressure measuring head (1) is formed by the combination of a contraction-shaped bell mouth curved section and a through hole straight pipe section, and the pressure measuring head (1), the pressure measuring guide pipe (2) and the pressure measuring guide pipe (3) are fixed on an operating pipeline by the sealing fixing device. Furthermore, the flow quantity of the total volume of gas is obtained by continuously measuring a differential pressure value of the static pressure P1 of the inner surface of a straight pipe section of the pressure measuring head (1), the static pressure P1 of a section of an industrial pipeline and the static pressure P2 of a section of an industrial pipeline. The present invention has the advantages of simple structure and low manufacturing cost, and can not be influenced by the inherent reification property fluctuation of fluids. Besides, if a flow quantity automatically recording display system is accessed, automatic measurement can be realized.
Description
The present invention relates to a kind of equipment for measuring gas flow rate, especially for the determinator of diameter greater than 0.5 meter major diameter industrial pipeline dusty gas flow, and assay method.
At present, the mensuration of industrial pipeline gas flow is general many with pitot tube or various restrictive type devices, such as flow-through orifice, Venturi tube etc.There are the limitation of many shortcomings and use in these determinators and measuring method thereof, the easy blocking of pitot tube, and measuring error is bigger, can not long-time continuous measure, the restrictive type devices resistance is big, increases energy consumption, easy to wear, so generally be not suitable for the mensuration of major diameter industrial pipeline dusty gas flow.The described determinator of BrP GB-1358649 is applicable to industrial pipeline, can solve the anti-clogging problem, but structure is complicated, and it is very uneasy to make, and can not METHOD FOR CONTINUOUS DETERMINATION.
The objective of the invention is some defectives, the equipment for measuring gas flow rate of a kind of industrial pipeline that is applicable to, particularly major diameter (more than 0.5 meter) dusty gas industrial pipeline is provided at existing flow measurement device for industrial pipeline gas.Its relatively simple for structure, reliable operation, but and long-time continuous measure.
Flow measurement device for industrial pipeline gas of the present invention comprises contraction shape hydraucone pressure-measuring head, be called for short pressure-measuring head (1), pressure-measuring head pressure catheter (2), tube wall pressure catheter (3), and they are fixed on pipeline section (10) and sealed fixing device on the industrial pipeline, pressure gauge and (or) flow writes down parts such as display system automatically.Pressure-measuring head (1) directly places in the pipeline, it combines by shrinking shape hydraucone segment of curve and through hole straight length, shrink shape hydraucone segment of curve and can adopt various mathematic curve form,, also can be taken as different concave surfaces as elliptic curve, hyperbolic curve, para-curve, lemniscate or the like.The size of pressure-measuring head (1) can determine that generally its position in industrial pipeline can be by promoting or reducing pressure-measuring head pressure catheter (2) and adjust according to industrial pipeline actual diameter and gas dust-laden or the concentration that contains other solid impurities or solid material.Welding or with the pressure-measuring head pressure catheter (2) that is threaded on the through hole straight length of pressure-measuring head (1).This conduit (2) can be an independent pipe or be threaded into an integral tube by some pipeline sections, it passes the aperture of beating on industrial pipeline (10) tube wall, fixed by packoff, thereby pressure-measuring head (1) is placed in locating in the industrial pipeline reliably.The contraction hydraucone of pressure-measuring head is in face of airflow direction, sealed fixing device is formed by combining by sealing ring (5), nut (6), pressure ring (7), screw (8), airtight and watertight padding (9), pipeline section (10), is not shifted to guarantee that pressure-measuring head pressure catheter (2) does not rotate.Upstream or downstream at hydraucone pressure-measuring head (1), offer another aperture on the tube wall of position separated by a distance, hexagonal nut (4) (or female sleeve) is welded on the duct wall tube wall pressure catheter (3) of screwing on then with this aperture is concentric.Mounting distance between pressure catheter (2) and (3) is determined according to the pressure gauge range that is adopted.Hydraucone pressure-measuring head (1), pressure-measuring head pressure catheter (2) and tube wall pressure catheter (3) can be selected material such as stainless steel, copper, aluminium, engineering plastics for use according to the temperature and the chemical property of measured gas.
With method of flow in apparatus of the present invention measuring channel be, after placing this device in the pipeline, pressure-measuring head pressure catheter (2) and tube wall pressure catheter (3) are connected on the pressure gauge, or their access flows are write down display system automatically, gas in pipeline (or other fluids, as contain the liquid of small amount of impurities, when strength convey materials fluid) flowing through this device pressure-measuring head (1), continuous coverage pressure-measuring head pressure catheter (2) and tube wall pressure catheter (3) pressure differential P1-P2 of living in 2, the i.e. pressure reduction of a section static pressure P2 of pressure-measuring head (1) through hole straight length inside surface static pressure P1 and industrial pipeline (10).Utilize the funtcional relationship of pressure reduction and flow to try to achieve the interior gas flow of pipeline, perhaps write down automatically under the situation of display system, directly read flow value at the direct access flow of pressure-measuring head pressure catheter (2) and tube wall pressure catheter (3).
Generally no longer take out later on because this device is put into industrial pipeline, therefore use this device to carry out the long-time continuous monitoring, and can not stop up the flow of gas flow in the pipeline or other fluids.Because contraction shape hydraucone pressure-measuring head size is little, can not increase the pipeline fluid resistance, again so can not increase energy consumption, also need not energize, so apparatus of the present invention have characteristics of energy saving, be a kind of energy-saving flow rate-measuring device, and simple in structure, manufacturing cost is low.Be not subjected to the influence of the intrinsic physico-chemical property of fluid (as parameters such as temperature, viscosity, humidity, density, concentration) fluctuation during the work of this device.This device is as long as access flow writes down display system automatically and can realize automatic measurement.
Accompanying drawing is the structure and the mounting means of industrial pipeline gas flow apparatus.1 for shrinking shape hydraucone pressure-measuring head among the figure, and 2 is the pressure-measuring head pressure catheter, and 3 is the tube wall pressure catheter, and 4 is hexagonal nut, and 5 is sealing ring, and 6 is sealing nut, and 7 is pressure ring, and 8 is housing screw, and 9 is heat-resisting asbestos packing, and 10 is industrial pipeline.Pressure gauge and (or) flow writes down display system automatically, accompanying drawing does not give and illustrating.
Below in conjunction with accompanying drawing embodiment is elaborated.
Example 1:
Accompanying drawing is depicted as the cross-section structure of flow measurement device for industrial pipeline gas of the present invention, the pressure catheter (2) of on the through hole straight length that shrinks shape hydraucone pressure-measuring head (1), burn-oning, by utilizing sealed fixing device that pressure-measuring head pressure catheter (2) is fixing, thereby pressure-measuring head (1) is installed on the position of center line of industrial pipeline (10).The hydraucone segment of curve of pressure-measuring head (1) is a lemniscate shape, and hydraucone is over against airflow direction.Pressure-measuring head pressure catheter (2) passes the aperture that is opened on the pipeline (10) and connects pressure gauge P1.In order to prevent that pressure-measuring head pressure catheter (2) from rotating and displacement, be fixed with sealed fixing device, the sealing device comprises: the sealing ring of outer cutting thread (5), the heat-resisting asbestos material of filling (9) in the ring, be used for compressing the pressure ring (7) of filler, be tightened in the nut (6) on the sealing ring (5), the housing screw (8) that pressure-measuring head pressure catheter (2) is withstood.On the industrial pipeline wall of the upstream position (as shown in the figure) of pressure-measuring head (1) position, open an aperture in addition, hexagonal nut (4) sleeve of the car internal thread of suitable height (or have) is welded on the pipeline with this aperture is concentric, and being screwed into tube wall survey conduit (3), this conduit connects pressure gauge P2.During measurement mechanism work, measure the pressure differential of pressure-measuring head (1) straight length inside surface static pressure P1 and industrial pipeline (10) section static pressure P2 by pressure-measuring head pressure catheter (2), tube wall pressure catheter (3), utilize the funtcional relationship of pressure reduction and flow to try to achieve gas flow in the pipeline.Also pressure-measuring head pressure catheter (2) and tube wall pressure catheter (3) access flow can be write down display system automatically, realize automatic monitoring.
Embodiment 2:
Load onto pressure-measuring head pressure catheter (2) with thread connecting mode on the through hole straight length that shrinks shape hydraucone pressure-measuring head (1), this pressure catheter can be a single-alone pipe of suitable material or form (being used for larger-diameter industrial pipeline) through being threaded by the plurality of sections pipe.Other is identical with embodiment 1.
Claims (3)
1, a kind of flow measurement device for industrial pipeline gas, dusty gas flow CONTINUOUS VISCOSITY MEASURING especially for the major diameter industrial pipeline, it comprises pressure-measuring head (1), pressure-measuring head pressure catheter (2), tube wall pressure catheter (3) and they are fixed on pipeline section (10) and sealed fixing device on the industrial pipeline, pressure gauge and (or) flow writes down parts such as display system automatically, it is characterized in that pressure-measuring head (1) directly places in the pipeline, it combines by shrinking shape hydraucone segment of curve and through hole straight length, shrinks shape hydraucone segment of curve and can adopt various mathematic curve form and concave surface.
2, device according to claim 1, it is characterized in that connecting on the through hole straight length of said pressure-measuring head (1) pressure-measuring head pressure catheter (2), the position of pressure-measuring head (1) in industrial pipeline (10) can be by promoting or reduction pressure-measuring head pressure catheter (2) be adjusted.
3, a kind of method of using flow in the flow measurement device for industrial pipeline gas measuring channel, it is characterized in that by pressure-measuring head pressure catheter (2) and tube wall pressure catheter (3), the pressure difference of a section static pressure P2 of continuous coverage pressure-measuring head (1) straight length inside surface static pressure P1 and industrial pipeline (10) is tried to achieve the volume of gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103639 CN1025756C (en) | 1991-06-08 | 1991-06-08 | Flow measurement device for industrial pipeline gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103639 CN1025756C (en) | 1991-06-08 | 1991-06-08 | Flow measurement device for industrial pipeline gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055815A CN1055815A (en) | 1991-10-30 |
| CN1025756C true CN1025756C (en) | 1994-08-24 |
Family
ID=4906195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91103639 Expired - Fee Related CN1025756C (en) | 1991-06-08 | 1991-06-08 | Flow measurement device for industrial pipeline gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1025756C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897224B (en) * | 2015-06-12 | 2018-03-16 | 温晓明 | Can scale removal flue gas flow measurement apparatus |
| CN106092221A (en) * | 2016-07-29 | 2016-11-09 | 成都南方电子仪表有限公司 | A kind of fluid measurement instrument |
| CN106768170A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院上海应用物理研究所 | The fluid parameter measurement apparatus of high-temperature electric conduction liquid, method |
| CN107270979B (en) * | 2017-05-18 | 2019-10-18 | 东方电气集团东方汽轮机有限公司 | A kind of aerodynamic testing air-flow measurement device |
| EP3779372A4 (en) * | 2018-03-28 | 2021-03-31 | Kobata Gauge Mfg. Co. Ltd. | Flow-rate measurement device and flow-rate measurement method |
| CN111458069B (en) * | 2020-04-17 | 2021-12-28 | 中船黄埔文冲船舶有限公司 | Wind pressure measuring device and measuring method of ventilating duct |
-
1991
- 1991-06-08 CN CN 91103639 patent/CN1025756C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055815A (en) | 1991-10-30 |
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| C14 | Grant of patent or utility model | ||
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |