CN216246558U - Reducing type porous balance flowmeter - Google Patents

Reducing type porous balance flowmeter Download PDF

Info

Publication number
CN216246558U
CN216246558U CN202122948800.4U CN202122948800U CN216246558U CN 216246558 U CN216246558 U CN 216246558U CN 202122948800 U CN202122948800 U CN 202122948800U CN 216246558 U CN216246558 U CN 216246558U
Authority
CN
China
Prior art keywords
pressure sampling
sampling pipe
sensor
porous balance
pipe
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
Application number
CN202122948800.4U
Other languages
Chinese (zh)
Inventor
白青松
陈丽亚
张占林
吴美景
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD
Original Assignee
CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD filed Critical CHENGDE FISCHER-PORTER AUTOMATION EQUIPMENT CO LTD
Priority to CN202122948800.4U priority Critical patent/CN216246558U/en
Application granted granted Critical
Publication of CN216246558U publication Critical patent/CN216246558U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model relates to the technical field of flowmeters, in particular to a reducing type porous balance flowmeter, which comprises a sensor, an upstream pressure sampling pipe and a downstream pressure sampling pipe, wherein the upstream pressure sampling pipe and the downstream pressure sampling pipe are arranged on the sensor, the two pressure sampling pipes are connected with a differential pressure signal acquisition processing unit, and the reducing type porous balance flowmeter is characterized in that: the sensor comprises an instrument flange, an inlet contraction section, a throat part and an outlet diffusion section which are integrated, wherein the throat part is provided with a porous balance throttling piece. By the technical scheme, the instrument has high measurement accuracy, stable and reliable work, high integration degree, compact structure, capability of displaying and outputting various data and convenient communication; the method is convenient for users to analyze data and improve the process, improves the production efficiency, reduces the cost and adapts to the social management and control requirements of energy resources.

Description

Reducing type porous balance flowmeter
Technical Field
The utility model relates to the technical field of flowmeters, in particular to a reducing type porous balance flowmeter.
Background
When a plurality of enterprises design and lay process pipelines, based on the consideration of factors such as energy conservation, future energy expansion and the like, the phenomena of large pipe diameter and small flow or large pipe diameter and low flow speed often occur, and great difficulty is brought to the selection of a flowmeter. For the throttling type differential pressure flowmeter, in order to meet the measurement requirement, the throttling opening must be extremely small so as to meet the requirements of increasing the differential pressure signal intensity and facilitating the acquisition and processing, but the small opening is easy to cause the consequences of overlarge pressure loss, easy blockage of a pipeline, large noise, serious reduction of the measurement accuracy of the meter and the like. In general, a pipeline diameter reduction treatment measure is adopted in the field process to improve the fluid flow of the pipeline, and then an applicable flow meter is selected for flow measurement. However, the pipe reduces the trouble for users while effectively solving the problem of actual flow measurement, some users do not have existing pipelines, much effort is needed for reforming a section of suitable pipeline, and the installation cost and the workload are increased.
In view of the phenomenon and analysis, the diameter-reducing type porous balance flowmeter is designed and developed by our company on the basis of the original standard type porous balance flowmeter, and the stable, reliable and accurate measurement of the fluid flow of the large-pipe-diameter small-flow on site is met. The problem of the on-site pipeline reconstruction of a user is solved, and the cost and the workload of purchasing instruments and pipeline reconstruction are reduced. Meanwhile, the aperture application range of the flow measurement of the porous balance flowmeter is widened.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a reducing type porous balance flowmeter, which solves the problems in the prior art.
The utility model relates to a reducing porous balance flowmeter, which comprises a sensor, an upstream pressure sampling pipe and a downstream pressure sampling pipe, wherein the upstream pressure sampling pipe and the downstream pressure sampling pipe are arranged on the sensor, the two pressure sampling pipes are connected with a differential pressure signal acquisition processing unit, and the reducing porous balance flowmeter is characterized in that: the sensor comprises an instrument flange, an inlet contraction section, a throat part and an outlet diffusion section which are integrated, wherein the throat part is provided with a porous balance throttling piece.
Preferably, the differential pressure signal acquisition and processing unit comprises a differential pressure transmitter, a three-valve group and a conversion joint which are sequentially connected from top to bottom; the adapter is respectively connected with the upstream pressure sampling pipe and the downstream pressure sampling pipe.
The utility model has the beneficial effects that: in order to adapt to the trend that society attaches more and more strict importance to energy metering control, a reducing type porous balance flowmeter is provided, and the problem of fluid flow measurement of large-diameter small-flow on site is solved. The problem of the on-site pipeline reconstruction of a user is solved, and the cost and the workload of purchasing instruments and pipeline reconstruction are reduced. Meanwhile, the aperture application range of the flow measurement of the porous balance flowmeter is widened. The instrument has high measurement accuracy, stable and reliable work, high integration degree, compact structure, capability of displaying and outputting various data and convenient communication; the method is convenient for users to analyze data and improve the process, improves the production efficiency, reduces the cost and adapts to the social management and control requirements of energy resources.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the construction of the sensor of the present invention;
FIG. 3 is a schematic structural diagram of a differential pressure signal acquisition and processing unit according to the present invention;
FIG. 4 is a schematic diagram of a diameter-reducing type porous balance flowmeter of the present invention.
In the drawings, the reference numbers: the pressure measuring device comprises a sensor 1, a sensor 11, an instrument flange 12, an inlet contraction section 13, a throat part, a porous balance throttling piece 14, an outlet diffusion section 15, an upstream pressure tapping pipe 2, a differential pressure signal acquisition and processing unit 3, a differential pressure transmitter 31, a differential pressure transmitter 32, a three-valve group 33, a conversion joint and a downstream pressure tapping pipe 4.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
As shown in fig. 1 to 4, the diameter-reducing porous balance flowmeter of the present invention includes a sensor 1, and an upstream pressure sampling pipe 2 and a downstream pressure sampling pipe 4 mounted on the sensor 1, the two pressure sampling pipes are connected to a differential pressure signal acquisition processing unit 3, and the flowmeter is characterized in that: the sensor 1 comprises an instrument flange 11, an inlet contraction section 12, a throat 13 and an outlet diffusion section 15 which are integrated into a whole, wherein the throat is provided with a porous balance throttling element 14.
Preferably, the differential pressure signal acquisition and processing unit 3 comprises a differential pressure transmitter 31, a three-valve set 32 and a conversion joint 33 which are sequentially connected from top to bottom; the adapter 33 is respectively connected with the upstream pressure sampling pipe 2 and the downstream pressure sampling pipe 4.
The use principle is as follows:
compared with the original standard porous balance flowmeter, the reducing porous balance flowmeter is mainly embodied in a reducing measuring pipe part. The structure is as shown in figure 4:
in the figure: d, measuring the inner diameter of the inlet/outlet pipe; d-throat internal diameter
P1 — static pressure upstream of the orifice; p2-static pressure downstream of the restriction
The inlet contraction section is a linear contraction section, and in order to reduce the pressure loss of the contraction section, the contraction ratio is generally determined
D/D is less than or equal to 2. The flow area is reduced by reducing the diameter of the part, the Reynolds number of the fluid flow is increased (namely the flow velocity is increased), the measurement lower limit of the porous balance flowmeter is increased, the flow field is improved, and the flow velocity of the fluid is more uniform and stable.
The dimension D is equal to the inner diameter dimension of the pipeline on site.
The throat part is in a cylindrical section, the inner diameter d is designed and calculated to be suitable for the inner diameter of the fluid flow measuring instrument, the length of the throat part is not smaller than d, and when the value of d is smaller, the length of the throat part can be properly enlarged to ensure the connection of the throttling part, the pressure sampling pipe and the throat part.
The form of the porous balance throttling element is the same as that of a standard type, and a utility model patent (see the porous balance throttling meter ZL201120472412.7 in detail) is obtained, and the outer diameter and the opening size are the sizes of the throttling element which is designed and calculated to be suitable for the caliber of the fluid flow measuring instrument. The throat part is generally connected by welding, and the outer diameter size is slightly smaller than the inner diameter size d of the throat part.
The outlet diffusion section has the same form and geometric dimension as the inlet contraction section.
The joints of the inlet contraction section, the throat part and the outlet diffusion section are in smooth transition.
Through the special design of the measuring pipe part of the reducing type porous balance flowmeter, the Reynolds number of the fluid is improved (namely the flow speed is improved), the flow characteristic and the measuring condition of the instrument are improved, the small flow which cannot be measured originally is changed into a measurable quantity, and the flow measurement problem of the fluid with large pipe diameter and small flow is solved. Meanwhile, the problem of on-site pipeline modification of a user is solved, and the cost and the workload for purchasing instruments and pipeline modification are reduced; widens the aperture application range of the flow measurement of the porous balance flowmeter
The instrument flange 11, the inlet contraction section 12, the throat 13, the porous balance throttling element 14 and the outlet diffusion section 15 in the sensor unit 1 are reasonably selected according to medium physical property parameters, process parameters and the like, so that the measurement of fluids such as liquid, gas, steam and the like is met.
Parts of the sensor unit 1 are connected in a welding mode, and no movable part is arranged inside the sensor unit.
The sensor unit 1 throttling element adopts a porous balance throttling element, the throat inner diameter is determined according to the Reynolds number of fluid in a pipeline and the pipeline inner diameter size through optimization design, the throttling opening size of the throttling element ensures that a fluid differential pressure signal is stable and strong, and the differential pressure signal acquisition and processing unit 3 is favorable for acquiring and processing the signal.
The upstream pressure sampling pipe 2 is positioned at the upstream side of the throttling element, and the static pressure P1 at the upstream side of the throttling element is collected and transmitted to the differential pressure signal collection processing unit 3.
The position of the downstream pressure sampling pipe 4 is positioned at the downstream side of the throttling piece, and static pressure P2 at the downstream side of the throttling piece is collected and transmitted to the differential pressure signal collection processing unit 3.
The upstream pressure sampling pipe 2 and the downstream pressure sampling pipe 4 are in an isolated state, and static pressure signals are collected without mutual interference.
The differential pressure transmitter 31 is connected with the three valve groups 32 through valve group mounting screws, the sealing gasket is used for sealing, the adapter joint 33 is in threaded connection with the three valve groups, and the adapter joint 33 is in welded connection with the upstream pressure sampling pipe 2 and the downstream pressure sampling pipe 4.
The pressure P1, P2 in the upstream pressure sampling tube 2 and the downstream pressure sampling tube 4 are transmitted to the differential pressure transmitter 31 through the adapter 33 and the three valve groups 32, the differential pressure transmitter 31 amplifies, filters, shapes, calculates and the like the differential pressure signals of the two, converts the signals into electric signals to realize remote signal output and communication, and simultaneously can display the differential pressure value through liquid crystal on site.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (2)

1. The utility model provides a porous balanced flowmeter of undergauge formula, includes the sensor and installs the upper reaches on the sensor and get and press pipe, low reaches and get and press the pipe, two are got and are pressed the pipe and be connected its characterized in that with differential pressure signal acquisition processing unit: the sensor comprises an instrument flange, an inlet contraction section, a throat part and an outlet diffusion section which are integrated, wherein the throat part is provided with a porous balance throttling piece.
2. The reducing type porous balance flowmeter of claim 1, wherein the differential pressure signal acquisition and processing unit comprises a differential pressure transmitter, three valve groups and a crossover sub which are connected in sequence from top to bottom; the adapter is respectively connected with the upstream pressure sampling pipe and the downstream pressure sampling pipe.
CN202122948800.4U 2021-11-29 2021-11-29 Reducing type porous balance flowmeter Active CN216246558U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122948800.4U CN216246558U (en) 2021-11-29 2021-11-29 Reducing type porous balance flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122948800.4U CN216246558U (en) 2021-11-29 2021-11-29 Reducing type porous balance flowmeter

Publications (1)

Publication Number Publication Date
CN216246558U true CN216246558U (en) 2022-04-08

Family

ID=80958344

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122948800.4U Active CN216246558U (en) 2021-11-29 2021-11-29 Reducing type porous balance flowmeter

Country Status (1)

Country Link
CN (1) CN216246558U (en)

Similar Documents

Publication Publication Date Title
CN201837418U (en) High-precision wide-range integrated throttle device
CN109506729B (en) Online detection method and device for gas-liquid two-phase flow parameters
CN210293314U (en) Necking type precession vortex flowmeter
CN216246558U (en) Reducing type porous balance flowmeter
CN201007662Y (en) Wenke conical flowmeter
CN101017106A (en) Vencore flowmeter
CN201707087U (en) Vortex street mass flow meter
CN116337167A (en) Double-bent-tube flow pressure measuring structure and method thereof
CN217276326U (en) Six-communication flow meter
CN201003962Y (en) Measurement device for air liquid two-phase bubble flow and volume air content rate
CN210802568U (en) Arnuba formula gas metering device
CN214843427U (en) Structure for widening measuring range of differential pressure type flowmeter
CN203772325U (en) Integral pore plate flowmeter
CN217716511U (en) Reducing type wedge-shaped flowmeter
CN217716512U (en) Necking type Annuba flowmeter
CN211696775U (en) Annular pressure measuring device for liquid differential pressure measurement in vertical round pipe in experimental site
CN216116185U (en) Electromagnetic differential pressure type mass flowmeter
CN212482588U (en) Precession vortex differential pressure type mass flowmeter
CN210689729U (en) High-precision wide-range integrated differential pressure type flow measuring device
CN209102162U (en) A kind of multiple flow passages ultrasonic wave gas meter
CN208567986U (en) A kind of flowmeter
CN216116186U (en) Vortex street differential pressure type mass flowmeter
CN210689731U (en) Wedge type gas metering device
CN110763394A (en) Annular pressure measuring device for liquid differential pressure measurement in vertical round pipe in experimental site
CN211926970U (en) Plug-in type multi-throat-diameter Venturi tube flowmeter

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant