CN201555643U - Upper clapboard pressure stabilizing tank provided with hole - Google Patents

Abstract

The utility model discloses an upper clapboard pressure stabilizing tank provided with a hole, which has the advantages of being simple in structure and convenient for use, fully ensuring the stability of liquid instantaneous flow rate, guaranteeing the reliability of test data and the like, and has the structure of comprising a pressure stabilizing tank body which is provided with a water inlet pipeline and a water outlet pipeline; the upper part inside the pressure stabilizing tank is provided with a ventilating horizontal clapboard; and the bottom part of the pressure stabilizing tank is provided with a vertical clapboard.

Description

Upper spacer buffer tank with holes

Technical field

The utility model relates to a kind of device of normal flow device buffer tank constant-voltage system, especially a kind of upper spacer buffer tank with holes of keeping the flow apparatus stability of flow.

Background technology

The fluid flow standard set-up, be the major criterion equipment of flow metering, be used for the metering performance test of velocity flowmeter, volumeter, mass flowmeter, as water meter, electromagnetic flowmeter, ultrasonic flow meter, the accuracy of mass flowmeter etc. how, generally needs the fluid flow standard set-up to test and obtain a result.

Flowmeter (can carry out the utensil of metering performance test on the fluid flow standard set-up, be designated hereinafter simply as " flowmeter ") when carrying out the metering performance test, as " the fluid flow standard set-up " of measurement standard, be to have certain requirements to its " stability of flow " in process of the test.

The calibration method regulation following (the text is as follows) of the relevant discharge stability of national metrological verification regulations " fluid flow standard set-up JJG164-200 ":

5.2.1 select one of following method to carry out the discharge stability calibrating according to matching requirements.

(1) discharge stability calibrating in the accumulated time:

The output signal q of continuous recording reaction flow size _1i(i=1,2,3 ...., n 〉=60)

Mean value $q_{}$ ${}_1=\frac{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{q}_{1i}}{n}$

Relative error $\mathrm{Ei}=\frac{q_{1i}-q_1}{{\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="H2009202814494E00011.png"\; state="\{\{state\}\}">q</figure-callout>}}_1}\&times;100\%$

Related function $R_j=\frac{\underset{i=1}{\overset{n-j}{\mathrm{\&Sigma;}}}{E}_i\&CenterDot;E_{i+j}}{n-j}$

In the formula: j=1,2 ..., n-1.

Stability $E_q$ $1_{}=k{\left[\frac{2}{n}\underset{j=1}{\overset{n}{\mathrm{\&Sigma;}}}\right|R_j\left|\right]}^{1/2}\&times;100\%$

(2) discharge stability calibrating between each accumulated time:

The inferior flow q of continuous coverage n (n 〉=10) _2i(i=1,2 ..., n)

Mean value $q_{}$ ${}_2=\frac{\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{q}_{2i}}{n}$

Stability $E_q$ $2_{}=\frac{k}{q_2}{\left[\frac{\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{(q_{2i}-q_2)}^2}{n-1}\right]}^{1/2}\&times;100\%;(k=2)$

" fluid flow standard set-up JJG164-200 " is to not concrete " numerical value " requirement of flow stability requirement.The stability influence of flow and the characteristic of underproof flowmeter have much relations, simultaneously also be the inner sampling time of flowmeter relation to be arranged, simultaneously with test in time and length relation is arranged, the reliability of test figure depends on the characteristic of underproof flowmeter and the characteristic of fluid flow standard set-up simultaneously.In any case discharge stability is high more good more.

The pulsation of flow also influences the uncertain factor of flow metering.Stability is meant that the undulate quantity relative cycle is longer, and the pulsation period is shorter relatively.

Pressurizing vessel is to be usually used in the device that flow apparatus improves discharge stability, eliminates flow pulsation.

Summary of the invention

The purpose of this utility model is exactly in order to improve the discharge stability of fluid flow standard set-up, provide a kind of have simple in structure, easy to use, can fully ensure the stability of transient liquid flow, the upper spacer buffer tank with holes of the reliability of warranty test data.

For achieving the above object, the utility model adopts following technical scheme:

A kind of upper spacer buffer tank with holes, it comprises the voltage stabilizing tank body, and the voltage stabilizing tank body is provided with inlet channel and outlet conduit, is provided with the ventilative dividing plate of level at the buffer tank internal upper part, and the buffer tank bottom is provided with vertical clapboard.

Described ventilative dividing plate level is installed in voltage stabilizing tank body internal upper part, is the ventilative dividing plate of stainless steel with holes, and the dividing plate present position should be immersed buffer tank and sets under the working pressure in the buffer tank in the water below the air.

The top of described buffer tank is provided with electric contact point pressure gauge.

Described buffer tank side is provided with pressure unit, and pressure unit is arranged on ventilative dividing plate below.

Principle of work of the present utility model:

Buffer tank plays the effect that regime flow reduces pulsation as an ingredient of fluid flow device.Water pump is evacuated to buffer tank with the water in the pond, flows out from buffer tank again, promptly plays the function that regime flow reduces pulsation.The top memory air of buffer tank utilizes the compressibility of air to slow down because the discharge stability problem that voltage fluctuation and pipe vibration cause.

The effect of going up ventilative dividing plate is that the air of preserving in the jar can not taken away because of flowing of liquid wherein, thereby guarantees the pressure stabilization function of buffer tank.

The beneficial effects of the utility model are:

A) the buffer tank design volume is little

B) filtered air efficient height

C) preserve the gas that gas can not taken away pressure stabilization function by velocity of medium greatly.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is ventilative diaphragm structure synoptic diagram.

Wherein, 1. voltage stabilizing tank body, 2. ventilative dividing plate, 3. electric contact point pressure gauge, 4. pressure unit, 5. inlet channel, 6. dividing plate, 7. outlet conduit.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Among Fig. 1, Fig. 2, it comprises voltage stabilizing tank body 1, is provided with electric contact point pressure gauge 3 at the top of voltage stabilizing tank body 1, is provided with the ventilative dividing plate 2 of horizontal positioned at voltage stabilizing tank body 1 internal upper part 1/3rd places, and ventilative dividing plate 2 is the ventilative dividing plate of stainless steel with holes.Be provided with the dividing plate 6 of vertical setting in the bottom of voltage stabilizing tank body 1.Be provided with pressure unit 4 below ventilative dividing plate 2, voltage stabilizing tank body 1 bottom is provided with inlet channel 5 and outlet conduit 7.

Claims (4)

1. upper spacer buffer tank with holes, it comprises the voltage stabilizing tank body, and the voltage stabilizing tank body is provided with inlet channel and outlet conduit, it is characterized in that, is provided with the ventilative dividing plate of level at the buffer tank internal upper part, and the buffer tank bottom is provided with vertical clapboard.

2. upper spacer buffer tank with holes as claimed in claim 1, it is characterized in that, described ventilative dividing plate level is installed in voltage stabilizing tank body internal upper part, is the ventilative dividing plate of stainless steel with holes, and the dividing plate present position should be immersed buffer tank and sets under the working pressure in the buffer tank in the water below the air.

3. upper spacer buffer tank with holes as claimed in claim 1 is characterized in that the top of described buffer tank is provided with electric contact point pressure gauge.

4. upper spacer buffer tank with holes as claimed in claim 3 is characterized in that described buffer tank side is provided with pressure unit, and pressure unit is arranged on ventilative dividing plate below.

Images