CN202869555U - Anti-blocking type flowmeter - Google Patents

Anti-blocking type flowmeter Download PDF

Info

Publication number
CN202869555U
CN202869555U CN 201220558062 CN201220558062U CN202869555U CN 202869555 U CN202869555 U CN 202869555U CN 201220558062 CN201220558062 CN 201220558062 CN 201220558062 U CN201220558062 U CN 201220558062U CN 202869555 U CN202869555 U CN 202869555U
Authority
CN
China
Prior art keywords
pipe
blocking
pressure pipe
flowmeter
flange form
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.)
Expired - Fee Related
Application number
CN 201220558062
Other languages
Chinese (zh)
Inventor
吴建峰
赵建军
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.)
SHENZHOU OBSERVATION AND CONTROL EQUIPMENT CO Ltd
Original Assignee
SHENZHOU OBSERVATION AND CONTROL 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 SHENZHOU OBSERVATION AND CONTROL EQUIPMENT CO Ltd filed Critical SHENZHOU OBSERVATION AND CONTROL EQUIPMENT CO Ltd
Priority to CN 201220558062 priority Critical patent/CN202869555U/en
Application granted granted Critical
Publication of CN202869555U publication Critical patent/CN202869555U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model discloses an anti-blocking type flowmeter which comprises a pipe body. A connection flange is arranged on the end portion of the pipe body, radial through holes are formed in the pipe wall of the pipe body, a radial flange type positive pressure measuring pipe and a radial flange type negative pressure measuring pipe are arranged on the radial through hole portion of the pipe wall, an anti-blocking wedge is arranged on the inner wall of the pipe body between the flange type positive pressure measuring pipe and the flange type negative pressure measuring pipe, the anti-blocking wedge is in a cone-shaped body structure, and the tip end of the cone-shaped body points to the center of the section of the pipe body. The anti-blocking type flowmeter is a differential pressure type flow measuring instrument, the anti-blocking wedge is a detecting element of the anti-blocking type flowmeter and is cone-shaped throttling element, and is installed inside a pipe, the smooth apex angle of the anti-blocking wedge is downward, and therefore liquid with suspended particles or viscous liquid and dirt media can pass smoothly, and no viscous flow can be generated on the upperstream side of the throttling element. The cone-shaped body has the advantage of being stable and reliable in use.

Description

A kind of block-resistant type flowmeter
Technical field
The utility model relates to a kind of flowmeter, is specifically related to a kind of block-resistant type flowmeter.
Background technology
Cuniform hole-plate flowmeter is a kind of differential pressure type flow instrument, and its measuring principle is identical with other general differential pressure flowmeter.The detection piece of cuniform hole-plate flowmeter is Wedge shape pore plate, and it is a V-type throttling element (cuniform hole-plate flowmeter), and the V-type throttling element pours in the flowtube; When flow is crossed the V-type throttling element, because the throttling action of V-type throttling element forms pressure reduction before and after the V-type throttling element.When the fluid that contains suspended particle (dust, silt, crystalline solid and other solid particle) or high viscosity fluid (such as tar, heavy oil, crude oil) when flowing through; can not produce viscous flow at the throttling element upstream side, also can not produce accumulating of solid particle or dope in throttling element upstream and downstream side.The square root of the differential pressure that it produces is proportional to quality or volumetric flow rate, determine different flow measurement range by different arch height h from the ratio (wedge shape is than h/D) of pipe diameter D, thereby the long-time running precision of having guaranteed cuniform hole-plate flowmeter is in 1. 0 grades.
Cuniform hole-plate flowmeter is specially adapted to the dirty fluid in the industries such as oil, chemical industry, iron and steel, metallurgy, electric power, light industry, environmental protection and urban construction, measurement and the control of high viscosity fluid.When the fluid that contains suspended particle (dust, silt, crystalline solid and other solid particle) or high viscosity fluid (such as tar, heavy oil, crude oil) when flowing through, because the throttling action of V-type throttling element, below the V-type throttling element, easily assemble dirt, service time is slightly long, be easy to form deposition of dirt, affect measuring accuracy and the reliability of flowmeter.The structure of existing like product is sealed at wedge shape part place, does not have blowdown apparatus, can not carry out blowdown to this cuniform hole-plate flowmeter at any time and process.In long-time running, the measuring accuracy and the reliability that have just reduced.Simultaneously, when needs carry out blowdown and process, cuniform hole-plate flowmeter must be pulled down, very inconvenient, and affect the blowdown treatment effect, pulling down to install behind the flowmeter to affect measuring accuracy and reliability again.
The utility model content
The purpose of this utility model is to overcome the defective that exists in the prior art, provides a kind of measuring accuracy high, block-resistant type flowmeter simple in structure.
For achieving the above object, the technical solution of the utility model is a kind of block-resistant type flowmeter of design, it is characterized in that, described flowmeter comprises body, end at described body is provided with joint flange, tube wall at described body is provided with radial direction through hole, the positive pressure pipe of flange form and the flange form that are provided with radially at the radial direction through hole position of described tube wall are born pressure pipe, inboard wall of tube body between the positive pressure pipe of described flange form and the negative pressure pipe of flange form is provided with anti-blocking voussoir, the tapered body structure of described anti-blocking voussoir, the most advanced and sophisticated point tube body section center of described cone-shaped body.
Wherein preferred technical scheme is that described joint flange is welded on the two ends of body.
Preferred technical scheme also has, and the negative pressure pipe of the positive pressure pipe of described flange form and flange form is welded on the tube wall of body.
Preferred technical scheme also has, described anti-blocking voussoir riveted joint or be bolted or clamping or be bonded in the tube wall of body.
Preferred technical scheme also has, and is provided with connecting pipe between the negative pressure pipe of the positive pressure pipe of described flange form and flange form and the tube wall.
Advantage of the present utility model and beneficial effect are: this anti-blocking flowmeter is a kind of differential pressure type flow measurement instrument, anti-blocking voussoir is the detection piece of anti-blocking flowmeter, it is the throttling element of a cone-shaped body, be installed in the inside of pipeline, the sliding drift angle in its garden down, be conducive to like this to contain the liquid of suspended particle or thick liquid and dirty medium and pass through smoothly, can not produce at the throttling element upstream side and remain in a standstill.Cone-shaped body has the reliable and stable characteristics of using.
This anti-blocking flowmeter can satisfy the measurement requirement of most of fluids, and it is simple in structure, dependable performance, easy to install.Be widely used in clean liquid, high viscosity fluid, corrosive fluid, slurries, various gas and comprise the measurement of air, steam, dirty coal gas and rock gas etc.In the situation that the pipeline Reynolds number little to 500 or the tall and big 500mPas of dielectric viscosity also can use.The cone-shaped body flowmeter more desirably is applicable to the incompetent occasion of traditional flow instrument.Its high precision, Wide-range and the scope of application extensively be impayable.
Description of drawings
Fig. 1 is the structural representation of the utility model block-resistant type flowmeter.
Among the figure: 1, body; 2, joint flange; 3, radial direction through hole; 4, the positive pressure pipe of flange form; 5, the negative pressure pipe of flange form; 6, anti-blocking voussoir; 7, connecting pipe.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, the utility model is a kind of block-resistant type flowmeter, this flowmeter comprises body 1, be provided with joint flange 2 in the end of described body 1, tube wall at described body 1 is provided with radial direction through hole 3, the positive pressure pipe 4 of flange form and the flange form that are provided with radially at radial direction through hole 3 positions of described tube wall are born pressure pipe 5, inboard wall of tube body between the positive pressure pipe 4 of described flange form and the negative pressure pipe 5 of flange form is provided with anti-blocking voussoir 6, described anti-blocking voussoir 6 tapered body structures, the most advanced and sophisticated point tube body section center of described cone-shaped body.
Preferred technical scheme is that described joint flange 2 is welded on the two ends of body 1 in the utility model.
Preferred technical scheme also has in the utility model, and the positive pressure pipe 4 of described flange form is welded on the tube wall of body 1 with the negative pressure pipe 5 of flange form.
Preferred technical scheme also has in the utility model, described anti-blocking voussoir 6 riveted joints or be bolted or clamping or be bonded in the tube wall of body 1.
Preferred technical scheme also has in the utility model, is provided with connecting pipe 7 between the negative pressure pipe 5 of the positive pressure pipe 4 of described flange form and flange form and the tube wall.
This block-resistant type flowmeter has:
Accuracy: accuracy high (be better than ± 0.5%), good reproducibility (± 0.2% reading).
The pressure loss: the pressure loss is little, measures about 1/5 (are about orifice plate 1/3) of differential pressure, energy savings.
Applicable caliber: DN15mm~DN1200mm.
Wedge shape is than h/D:0.2, and 0.3,0.4,0.5.
Media-resistant pressure: below the 5MPa, also can be higher than 5MPa by particular design.
Media-resistant temperature: (the special order of user also can provide the product of anti-higher temperature) below 500 ℃.
The Reynolds number scope of application: 500~1 * 10 6(when measuring under the low reynolds number, the rangeability relative decrease, the uncertainty of efflux coefficient increases relatively).
Fluid to be measured viscosity: 500mPas or higher.
Measurement sensibility is good, and it is constant that coefficient of flow keeps for a long time, and the calibration interval are long.
Measurement range degree (range ratio) is wide, can reach 10: 1 without the secondary instrument software correction.
Simple in structure, reliability is high, long service life.Non-maintaining (without movable member) resistance to wears.
The Venturi tube of comparing same level is more exquisite.
Have the automatically cleaning ability, dirty medium can flow to the downstream smoothly.
Can measure bidirectional flow.
Require lowly to straight length is installed, can effectively avoid or reduce the additional uncertainty of measurement of flow system.General upstream 6D, downstream 3D.
But level, the vertical or installation of tilting should guarantee to be full of in the pipe liquid.
Before the restriction device, rear straight length should be straight, and is as seen crooked without naked eyes, should be simultaneously " circle ", and inwall should be clean, without pit and sediment.
The impulse pipeline is installed the standard that should meet standard code.
Adaptable to medium, can measure the high and low pressure fluid, except general gas flow, liquid, steam, be specially adapted to high viscosity, slurries, corrosivity, easily crystallization, contain the many fluids of suspension and dirty fluid, without the blockage problem of throttling element " contamination " and pressure tappings.
This anti-blocking flowmeter can successfully be measured following various fluid:
1, gas: coal gas, rock gas comprise that non-clean rock gas, air that height contains wet gas and contains other impurity comprise moisture, the air that contains solid particle and contain other suspension;
2, steam: saturated vapour, superheated vapor;
3, liquid: oils comprises crude oil, fuel oil, coal tar, asphaltum oil, paraffin oil, contains water-emulsified oil, the moisture husky sump oil etc. that contains; Slurries comprise slurry oil, iron ore slurry, paper pulp, mud, coal slurry etc.; Water comprises water purification, sewage, industrial waste water, contains the rivers source water of silt and foreign material etc.; Various aqueous solution comprise the strong various acid of corrosivity, alkali, salt solusion and easy crystallization, contain the many solution of suspension;
4, special fluid.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (5)

1. block-resistant type flowmeter, it is characterized in that, described flowmeter comprises body, end at described body is provided with joint flange, tube wall at described body is provided with radial direction through hole, the positive pressure pipe of flange form and the flange form that are provided with radially at the radial direction through hole position of described tube wall are born pressure pipe, inboard wall of tube body between the positive pressure pipe of described flange form and the negative pressure pipe of flange form is provided with anti-blocking voussoir, the tapered body structure of described anti-blocking voussoir, the most advanced and sophisticated point tube body section center of described cone-shaped body.
2. such as the described block-resistant type flowmeter of claim l, it is characterized in that, described joint flange is welded on the two ends of body.
3. block-resistant type flowmeter as claimed in claim 1 is characterized in that, the negative pressure pipe of the positive pressure pipe of described flange form and flange form is welded on the tube wall of body.
4. block-resistant type flowmeter as claimed in claim 1 is characterized in that, described anti-blocking voussoir riveted joint or be bolted or clamping or be bonded in the tube wall of body.
5. block-resistant type flowmeter as claimed in claim 1 is characterized in that, is provided with connecting pipe between the negative pressure pipe of the positive pressure pipe of described flange form and flange form and the tube wall.
CN 201220558062 2012-10-27 2012-10-27 Anti-blocking type flowmeter Expired - Fee Related CN202869555U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220558062 CN202869555U (en) 2012-10-27 2012-10-27 Anti-blocking type flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220558062 CN202869555U (en) 2012-10-27 2012-10-27 Anti-blocking type flowmeter

Publications (1)

Publication Number Publication Date
CN202869555U true CN202869555U (en) 2013-04-10

Family

ID=48036269

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220558062 Expired - Fee Related CN202869555U (en) 2012-10-27 2012-10-27 Anti-blocking type flowmeter

Country Status (1)

Country Link
CN (1) CN202869555U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104501884A (en) * 2014-12-08 2015-04-08 上海科洋科技股份有限公司 Rectangular flowmeter
CN104977050A (en) * 2015-07-17 2015-10-14 卢玖庆 Variable flow wedge shaped flowmeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104501884A (en) * 2014-12-08 2015-04-08 上海科洋科技股份有限公司 Rectangular flowmeter
CN104977050A (en) * 2015-07-17 2015-10-14 卢玖庆 Variable flow wedge shaped flowmeter

Similar Documents

Publication Publication Date Title
CN103604473A (en) Wedge-shaped flowmeter and installation method
CN202869555U (en) Anti-blocking type flowmeter
CN1963402A (en) A differential pressure type flow measuring method and flow apparatus thereof
CN202083421U (en) Flow rate measuring orifice plate and collecting well flow rate measuring and throttling device
CN203981533U (en) A kind of for measuring the device of serum density
CN210014810U (en) Plug-in air quantity measuring device
CN201434698Y (en) Reducing measuring tube flowmeter
CN202485725U (en) Expanded Venturi tube flow sensor
CN204115782U (en) Oil recovery winding pipe flow rate metering device
CN206919955U (en) A kind of auto purification type wedge shape differential pressure flowmeter
CN211085374U (en) Differential pressure type flowmeter with anti-blocking device
CN201293661Y (en) Blowdown type cuniform hole-plate flowmeter
CN2935095Y (en) Wedge-type flowmeter
CN203069218U (en) Uniform-velocity tube flowmeter
CN204831399U (en) Stifled amount of wind, flue gas flux measuring apparatu are prevented to array
CN102486445A (en) Bubble type slurry densimeter
CN207215195U (en) A kind of flowmeter for reducing measurement error
CN205981309U (en) Anticorrosive critical speed flowmeter
CN201697648U (en) Integrally machined Venturi tube
CN208621105U (en) A kind of suspended body flowmeter based on heavy caliber flow measurement
CN201434745Y (en) Pressure gauge with buffer type anti-clogging device
CN203422131U (en) Buffering measurement drum device used for on-line detection of PH value of seriflux of desulfurization system
CN201130177Y (en) Double-differential pressure type water content meter
CN203069219U (en) Elbow meter
CN2762075Y (en) Smoke wind pipe flowmeter based on V-type innor cone speed measuring pipe

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130410

Termination date: 20181027

CF01 Termination of patent right due to non-payment of annual fee