CN202382778U - Hidden annular cone throttling device for pressure taping of pipeline ring chamber - Google Patents
Hidden annular cone throttling device for pressure taping of pipeline ring chamber Download PDFInfo
- Publication number
- CN202382778U CN202382778U CN2011205602860U CN201120560286U CN202382778U CN 202382778 U CN202382778 U CN 202382778U CN 2011205602860 U CN2011205602860 U CN 2011205602860U CN 201120560286 U CN201120560286 U CN 201120560286U CN 202382778 U CN202382778 U CN 202382778U
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- Prior art keywords
- pressure
- pressure pipe
- low side
- pressure tapping
- ring casing
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Abstract
The utility model discloses a hidden annular cone throttling device for pressure taping of a pipeline ring chamber. The hidden annular cone throttling device comprises a cone sensor arranged on a measuring straight pipe as well as a high-end pressure tapping tube and a low-end pressure tapping tube which are arranged on the cone sensor; the high-end pressure tapping tube is provided with a high-end pressure tapping hole; the low-end pressure tapping tube is provided with a low-end pressure tapping hole; the outer wall of the measuring straight pipe is provided with a first pressure tapping ring chamber and a second pressure tapping ring chamber; the first pressure tapping ring chamber is provided with a first pressure tapping port; the second pressure tapping ring chamber is provided with a second pressure tapping port; the outer wall of the measuring straight tube is provided with a third pressure tapping ring chamber and a fourth pressure tapping ring chamber; the third pressure tapping ring chamber is provided with a third pressure tapping port; and the third pressure tapping ring chamber is provided with a fourth pressure tapping port. The hidden annular cone throttling device disclosed by the utility model is simple in structure, reasonable in design and convenient in use, and can be used for solving the problems of large flow volatility, large pressure loss and large measurement error existing in the measuring process of a flowmeter in the prior art, reducing the instantaneous volatility of fluid and reducing the signal interference caused by the external environment.
Description
Technical field
The utility model relates to a kind of restriction device, especially relates to the built-in ring-like conical throttling gear of a kind of pipeline ring casing pressure.
Background technology
Differential pressure flowmeter is a kind of with a long history, flowmeter that consumption is maximum, is a kind of flowmeter of wherein widespread use with restriction device as the differential pressure flowmeter that detects, and we are referred to as throttle differential flowmeter.Throttle differential flowmeter is to pass through restriction device according to fluid; The principle that partial pressure can change kinetic energy generation differential pressure signal into is worked; Throttle differential flowmeter generally is made up of restriction device, differential pressure transmitter and Flow Measurement Display Meter, also can be equipped with differential pressure gauge by restriction device and form.
Industries such as metallurgy, electric power, chemical industry for flow measurements such as gas, liquid, steam in; The measurement of particularly big caliber, low flow velocity, dirty fluid; Usually adopt throttle differential flowmeter; Like standard orifice plate, calibrating nozzle, Venturi tube etc., there is following shortcoming in these flowmeters in actual metered:
(1) can not satisfy the installation requirement of straight length, thereby cause the differential pressure signal of flowmeter output extremely accurately unstable, and then influence the steady display of rate-of flow, flow rate fluctuation property is very big, and accuracy is low; In order to satisfy the installation requirement of flowmeter straight length, also waste a large amount of steel simultaneously, improved installation cost.
(2) the gaging pressure loss is excessive, owing to receive the influence of factors such as ways of measure pressure, working environment, most flowmeter all exists the pressure loss excessive, and measuring accuracy is not high.The rate of flow of fluid of this point that pressure port is got can not reflect the true flow velocity of whole pipe inner fluid, and pressure point is very single, and the differential pressure value that records also is false through the fluid flow that calculates.
(3) pressure is normally carried out pressure on the measurement straight tube, and flow rate fluctuation property like this is big, and the pressure loss is big, and measuring error is big.
The utility model content
The purpose of the utility model is to overcome above-mentioned deficiency of the prior art; The built-in ring-like conical throttling gear of a kind of pipeline ring casing pressure is provided; It is simple in structure, reasonable in design and use easy to operate; Can solve effectively that there is the problem that flow rate fluctuation property is big, the pressure loss is big, measuring error is big in flowmeter in the prior art in measuring process, reduce the momentary fluctuation property of fluid simultaneously, reduce interference and the influence of external environment condition signal.
For realizing above-mentioned purpose; The technical scheme that the utility model adopts is: the built-in ring-like conical throttling gear of a kind of pipeline ring casing pressure; It is characterized in that: comprise being arranged on and measure the inner cone sensor of straight tube and be installed on the said cone sensor and high-end pressure pipe and the low side pressure pipe of measuring straight tube passed in the end; The quantity of said high-end pressure pipe and low side pressure pipe is two; Two said high-end pressure pipes are respectively the first high-end pressure pipe and the second high-end pressure pipe, and the said first high-end pressure pipe and the second high-end pressure Guan Shangjun have high-end pressure port, and the direction of said high-end pressure port is identical with flow direction; Two said low side pressure pipes are respectively the first low side pressure pipe and the second low side pressure pipe, and the said first low side pressure pipe and the second low side pressure Guan Shangjun have the low side pressure port, and the direction of said low side pressure port is vertical with flow direction; On the said measurement straight tube outer wall and the upper end that is positioned at the first high-end pressure pipe and the first low side pressure pipe is separately installed with the first pressure ring casing and the second pressure ring casing; All be communicated with between the said first pressure ring casing and the first high-end pressure pipe and between the second pressure ring casing and the first low side pressure pipe; On the said first pressure ring casing first pressure tappings that is communicated with it is installed, on the said second pressure ring casing second pressure tappings that is communicated with it is installed; On the said measurement straight tube outer wall and the lower end that is positioned at the second high-end pressure pipe and the second low side pressure pipe is separately installed with the 3rd pressure ring casing and the 4th pressure ring casing; On said the 3rd pressure ring casing the 3rd pressure tappings that is communicated with it is installed, on said the 4th pressure ring casing the 4th pressure tappings that is communicated with it is installed.
The built-in ring-like conical throttling gear of above-mentioned a kind of pipeline ring casing pressure; It is characterized in that: said cone sensor is by setting gradually from left to right and interconnective precentrum, middle throat, back frustum and rear fender four parts are formed; The said first high-end pressure pipe and the second high-end pressure pipe are installed on the precentrum, and the said first low side pressure pipe and the second low side pressure pipe are installed in the middle throat.
The built-in ring-like conical throttling gear of above-mentioned a kind of pipeline ring casing pressure is characterized in that: the said first high-end pressure pipe and the second high-end pressure pipe are located on the same line, and the first low side pressure pipe and the second low side pressure pipe are located on the same line.
The built-in ring-like conical throttling gear of above-mentioned a kind of pipeline ring casing pressure, it is characterized in that: the two ends of said measurement straight tube all are welded with flange.
The built-in ring-like conical throttling gear of above-mentioned a kind of pipeline ring casing pressure is characterized in that: said measurement straight tube is a cylinder.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and use easy to operate.
2, can solve effectively that there is the problem that flow rate fluctuation property is big, the pressure loss is big, measuring error is big in flowmeter in the prior art in measuring process.
3, the utility model is through installing the first high-end pressure pipe, the first low side pressure pipe, the second high-end pressure pipe and the second low side pressure pipe on the cone sensor; And measuring the installation first pressure ring casing, the second pressure ring casing, the 3rd pressure ring casing and the 4th pressure ring casing on the straight tube outer wall; Can play the function of voltage stabilizing, stable output to the height of the fluid on cone sensor end pressure signal; Make the differential pressure signal of measuring through differential pressure transmitter more tend towards stability, measuring-signal is truer, and the flow of measuring is more accurate; And then reduced the momentary fluctuation property of fluid, and reduced interference and the influence of external environment condition to signal.
Through accompanying drawing and embodiment, the utility model is done further detailed description below.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model.
Description of reference numerals:
The 1-flange; The 4-1-first pressure ring casing; The 4-2-second pressure ring casing;
6-1-first pressure tappings; 6-2-second pressure tappings; 6-3-the 3rd pressure tappings;
6-4-the 4th pressure tappings; 7-1-the 3rd pressure ring casing; 7-2-the 4th pressure ring casing;
9-measures straight tube; The high-end pressure port of 11-; The 12-1-first high-end pressure pipe;
The 12-2-second high-end pressure pipe; The 13-sewage draining exit; The 14-precentrum;
Throat in the middle of the 15-; 16-low side pressure port; The 17-1-first low side pressure pipe;
The 17-2-second low side pressure pipe; Frustum behind the 18-; The 19-rear fender.
Embodiment
As shown in Figure 1; The utility model comprises being arranged on to be measured the inner cone sensor of straight tube 9 and is installed on the said cone sensor and high-end pressure pipe and the low side pressure pipe of measuring straight tube 9 passed in the end; The quantity of said high-end pressure pipe and low side pressure pipe is two; Two said high-end pressure pipes are respectively the first high-end pressure pipe 12-1 and the second high-end pressure pipe 12-2; All have high-end pressure port 11 on the said first high-end pressure pipe 12-1 and the second high-end pressure pipe 12-2, the direction of said high-end pressure port 11 is identical with flow direction; Two said low side pressure pipes are respectively the first low side pressure pipe 17-1 and the second low side pressure pipe 17-2; All have low side pressure port 16 on the said first low side pressure pipe 17-1 and the second low side pressure pipe 17-2, the direction of said low side pressure port 16 is vertical with flow direction; On said measurement straight tube 9 outer walls and the upper end that is positioned at the first high-end pressure pipe 12-1 and the first low side pressure pipe 17-1 is separately installed with the first pressure ring casing 4-1 and the second pressure ring casing 4-2; All be communicated with between the said first pressure ring casing 4-1 and the first high-end pressure pipe 12-1 and between the second pressure ring casing 4-2 and the first low side pressure pipe 17-1; On the said first pressure ring casing 4-1 the first pressure tappings 6-1 that is communicated with it is installed, on the said second pressure ring casing 4-2 the second pressure tappings 6-2 that is communicated with it is installed; On said measurement straight tube 9 outer walls and the lower end that is positioned at the second high-end pressure pipe 12-2 and the second low side pressure pipe 17-2 is separately installed with the 3rd pressure ring casing 7-1 and the 4th pressure ring casing 7-2; On said the 3rd pressure ring casing 7-1 the 3rd pressure tappings 6-3 that is communicated with it is installed, on said the 4th pressure ring casing 7-2 the 4th pressure tappings 6-4 that is communicated with it is installed.
As shown in Figure 1; In the present embodiment; Said cone sensor is by setting gradually from left to right and interconnective precentrum 14, middle throat 15, back frustum 18 and rear fender 19 parts are formed; The said first high-end pressure pipe 12-1 and the second high-end pressure pipe 12-2 are installed on the precentrum 14, and the said first low side pressure pipe 17-1 and the second low side pressure pipe 17-2 are installed in the middle throat 15.
As shown in Figure 1, in the present embodiment, the said first high-end pressure pipe 12-1 and the second high-end pressure pipe 12-2 are located on the same line, and the first low side pressure pipe 17-1 and the second low side pressure pipe 17-2 are located on the same line.
As shown in Figure 1, in the present embodiment, the two ends of said measurement straight tube 9 all are welded with flange 1.
As shown in Figure 1, in the present embodiment, said measurement straight tube 9 is a cylinder.
The principle of work of the utility model is: before the use, on the first pressure tappings 6-1, the second pressure tappings 6-2, the 3rd pressure tappings 6-3 and the 4th pressure tappings 6-4, all connect differential pressure transmitter.During use; Fluid is through the cone sensor of built-in conical throttling gear; After the rectified action of precentrum 14; Get into high-end pressure pipe and low side pressure pipe through high-end pressure port 11 respectively with low side pressure port 16, the stream pressure signal of entering is transferred to the first pressure ring casing 4-1, the second pressure ring casing 4-2, the 3rd pressure ring casing 7-1 and the 4th pressure ring casing 7-2, through the first pressure tappings 6-1, the second pressure tappings 6-2, the 3rd pressure tappings 6-3 and the 4th pressure tappings 6-4 the pressure signal that collects is introduced differential pressure transmitter respectively; Record fluid differential pressure, calculate flow.The utility model is through installing the first high-end pressure pipe 12-1, the first low side pressure pipe 17-1, the second high-end pressure pipe 12-2 and the second low side pressure pipe 17-2 on the cone sensor; And measuring the installation first pressure ring casing 4-1, the second pressure ring casing 4-2, the 3rd pressure ring casing 7-1 and the 4th pressure ring casing 7-2 on straight tube 9 outer walls; Can play the function of voltage stabilizing, stable output to the height of the fluid on cone sensor end pressure signal; Make the differential pressure signal of measuring through differential pressure transmitter more tend towards stability, measuring-signal is truer, and the flow of measuring is more accurate; And then reduced the momentary fluctuation property of fluid, and reduced interference and the influence of external environment condition to signal.
In the said process, when fluid was flowed through the cone sensor, flow velocity was maximum when middle throat 15; Its sectional area static pressure is minimum; Record the static pressure point on this sectional area, get the stagnation pressure of precentrum 14 fronts in face of flow direction again, fluid velocity is zero on precentrum 14; The pressure at two places forms pressure reduction, is obtained the real traffic of measuring in the straight tube 9 by Bernoulli equation.
Because the utility model adopts this structural design of cone sensor, so fluid is through precentrum 14 time, and fluid is very smooth, and resistance is very little, and the flow field fluctuation is disturbed very little; Fluid shrinks (throttling) towards the inwall of measuring straight tube 9 gradually simultaneously, and fluid is not the compelled pipeline center's near axis of measuring straight tube 9 that is retracted to, and no longer is a restraining mass (throttling element); Make fluid flip-flop flow direction, but fluid flows through to the two ends of measuring straight tube 9, make flow rate of fluid accelerate gradually; The dirt that the cone sensor surface is adhered to has souring; Change the physical dimension of cone sensor to a certain extent, prolonged serviceable life, guaranteed measuring accuracy.
The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any restriction; Every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment did, all still belong in the protection domain of the utility model technical scheme.
Claims (5)
1. the built-in ring-like conical throttling gear of pipeline ring casing pressure; It is characterized in that: comprise being arranged on and measure the inner cone sensor of straight tube (9) and be installed on the said cone sensor and high-end pressure pipe and the low side pressure pipe of measuring straight tube (9) passed in the end; The quantity of said high-end pressure pipe and low side pressure pipe is two; Two said high-end pressure pipes are respectively the first high-end pressure pipe (12-1) and the second high-end pressure pipe (12-2); All have high-end pressure port (11) on the said first high-end pressure pipe (12-1) and the second high-end pressure pipe (12-2), the direction of said high-end pressure port (11) is identical with flow direction; Two said low side pressure pipes are respectively the first low side pressure pipe (17-1) and the second low side pressure pipe (17-2); All have low side pressure port (16) on the said first low side pressure pipe (17-1) and the second low side pressure pipe (17-2), the direction of said low side pressure port (16) is vertical with flow direction; On said measurement straight tube (9) outer wall and the upper end that is positioned at the first high-end pressure pipe (12-1) and the first low side pressure pipe (17-1) is separately installed with the first pressure ring casing (4-1) and the second pressure ring casing (4-2); All be communicated with between the said first pressure ring casing (4-1) and the first high-end pressure pipe (12-1) and between the second pressure ring casing (4-2) and the first low side pressure pipe (17-1); On the said first pressure ring casing (4-1) first pressure tappings (6-1) that is communicated with it is installed, on the said second pressure ring casing (4-2) second pressure tappings (6-2) that is communicated with it is installed; On said measurement straight tube (9) outer wall and the lower end that is positioned at the second high-end pressure pipe (12-2) and the second low side pressure pipe (17-2) is separately installed with the 3rd pressure ring casing (7-1) and the 4th pressure ring casing (7-2); On said the 3rd pressure ring casing (7-1) the 3rd pressure tappings (6-3) that is communicated with it is installed, on said the 4th pressure ring casing (7-2) the 4th pressure tappings (6-4) that is communicated with it is installed.
2. according to the built-in ring-like conical throttling gear of the described a kind of pipeline ring casing of claim 1 pressure; It is characterized in that: said cone sensor is by setting gradually from left to right and interconnective precentrum (14), middle throat (15), back frustum (18) and rear fender (19) four parts are formed; The said first high-end pressure pipe (12-1) and the second high-end pressure pipe (12-2) are installed on the precentrum (14), and the said first low side pressure pipe (17-1) and the second low side pressure pipe (17-2) are installed in the middle throat (15).
3. according to the built-in ring-like conical throttling gear of claim 1 or 2 described a kind of pipeline ring casing pressures; It is characterized in that: the said first high-end pressure pipe (12-1) is located on the same line with the second high-end pressure pipe (12-2), and the first low side pressure pipe (17-1) is located on the same line with the second low side pressure pipe (17-2).
4. according to the built-in ring-like conical throttling gear of claim 1 or 2 described a kind of pipeline ring casing pressures, it is characterized in that: the two ends of said measurement straight tube (9) all are welded with flange (1).
5. according to the built-in ring-like conical throttling gear of claim 1 or 2 described a kind of pipeline ring casing pressures, it is characterized in that: said measurement straight tube (9) is a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205602860U CN202382778U (en) | 2011-12-28 | 2011-12-28 | Hidden annular cone throttling device for pressure taping of pipeline ring chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205602860U CN202382778U (en) | 2011-12-28 | 2011-12-28 | Hidden annular cone throttling device for pressure taping of pipeline ring chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382778U true CN202382778U (en) | 2012-08-15 |
Family
ID=46631274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205602860U Expired - Fee Related CN202382778U (en) | 2011-12-28 | 2011-12-28 | Hidden annular cone throttling device for pressure taping of pipeline ring chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382778U (en) |
-
2011
- 2011-12-28 CN CN2011205602860U patent/CN202382778U/en not_active Expired - Fee Related
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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: 20120815 Termination date: 20141228 |
|
| EXPY | Termination of patent right or utility model |