CN211856240U

CN211856240U - On-line weighing fluid densimeter of isolation system

Info

Publication number: CN211856240U
Application number: CN202020366426.XU
Authority: CN
Inventors: 钟方明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-22
Filing date: 2020-03-22
Publication date: 2020-11-03
Anticipated expiration: 2030-03-22

Abstract

The utility model provides an influence that isolated system to weighing, empty clear water and fluid and make the volumetric flask keep clean can accomplish automatically that measurement and calculation to fluid density that the fluid densimeter of weighing on line of isolated system can realize the full-automatic online sampling process control to the fluid. The whole device has simple structure, high automation degree and high measurement precision, and is suitable for on-line accurate measurement and monitoring application of fluid density in an industrial field.

Description

On-line weighing fluid densimeter of isolation system

Technical Field

The utility model relates to a full-automatic online sample formula liquid density measuring device, weighing device and system are isolated mutually when especially density measurement.

Background

When the density of the slurry in the desulfurization reaction tower exceeds a limit value, a slurry replacement measure in the tower is immediately adopted to remove part of high-density slurry and supplement part of fresh desulfurization original slurry.

At present, two methods for measuring the density of slurry on line are adopted in the flue gas desulfurization process of a coal-fired boiler.

One method is as follows: the double-differential-pressure liquid level measurement mode is that two double-flange differential pressure transmitters are arranged on the side wall of the desulfurization tower body, and a pressure taking port at the upper end is at one elevation; the lower pressure taking port is below the normal liquid level of the slurry, the difference between the lower pressure taking ports of the two differential pressure transmitters is a standard interval, and the differential pressure value formed by the slurry between the standard intervals is compared with the differential pressure value formed by the standard water, so that the density value of the slurry in the tower is calculated. However, this method has the disadvantages that the liquid level in the tower is changed by the fluctuation of the smoke pressure, which affects the accurate measurement of the liquid level, and it is difficult to ensure the calculated value of the slurry density. Yet another approach is: an online density measuring instrument is arranged on an outlet pipeline of the slurry circulating pump outside the tower. Because the online densitometer has strict limitation on the flow velocity of the slurry, the flow velocity is high, the measurement precision is influenced, the flow velocity is low, and larger-particle dust particles in the slurry cannot smoothly flow through the online densitometer, so that the online densitometer is easily blocked.

The on-line weighing type densimeter is invented by the other people, but when weighing, the weighing device is connected with a valve or an electric cable of the system, the weighing weight is large, and the measuring accuracy is influenced.

Aiming at the current situation, a full-automatic online weighing fluid densimeter which is convenient to operate, accurate in metering and capable of isolating a system and dumping a sample is urgently needed.

Disclosure of Invention

For solving above technical not enough, the utility model provides a degree of automation is high, isolated system, measure accurate, empty the full-automatic online sample fluid densimeter of weighing of sample.

The utility model discloses a realize through following measure:

the utility model discloses a can isolated full-automatic online weighing fluid densimeter of system, including weighing device, volumetric flask, clear water and the measured fluid sampling device, elevating gear and the controller that each independently installs, volumetric flask top is provided with the weighing module who is used for weighing, and open at the volumetric flask top has the volumetric flask gas vent, and the volumetric flask top is provided with the volumetric flask funnel, it has the volumetric flask overflow mouth to open on the bottom mouth of pipe wall of volumetric flask funnel, elevating gear contains lift, lift line hole and weight, weighing device includes weighing support, weighing module, support couple, and weighing support hangs under weighing module and lifts the bottle, weighing support is provided with the support couple in the bottom, and the support couple jointly uses with the lift line, the clear water measured fluid sampling device includes clear water and the measured fluid import, the device comprises a clean water electric valve, a clean water inlet, a measured fluid electric three-way valve and a measured fluid sample discarding outlet, wherein the lifting device, the measured fluid electric three-way valve, the clean water electric valve and a weighing module are in signal connection with a controller, and the weighing module is used for weighing the weight of the volumetric flask in a state of being filled with clean water and in a state of being filled with fluid and sending weight parameters to the controller; the controller calculates the density of the fluid in the volumetric flask according to the weight when the volumetric flask is fully filled with clear water and the fluid in the volumetric flask is fully filled with the fluid, and sends control signals to the clear water electric valve, the measured fluid electric three-way valve and the lifter.

Above-mentioned clear water is by survey fluid sampling device when needs weighing clear water, the fluid of being surveyed is switched the flow to being surveyed the fluid through being surveyed the fluid electric three-way valve and is abandoned a kind export, open clear water electric valve, clear water flows to clear water and being surveyed the fluid import, reentrant volumetric flask, clear water overflows from the volumetric flask overflow mouth after the volumetric flask is filled up, close clear water electric valve, weighing module reading, when needs weighing fluid, close clear water electric valve, the fluid of being surveyed flows to clear water and is surveyed the fluid import through being surveyed the switching of fluid electric three-way valve, fluid admission volumetric flask, the fluid overflows from the volumetric flask overflow mouth after the volumetric flask is filled up, be surveyed the fluid electric three-way valve and switch the flow to being surveyed the fluid and abandon a kind export, weighing module reading.

After the volumetric flask is filled with clear water or fluid and weighed, the controller controls the lifting device to lift the lifting wire upwards, the lifting wire hole hooks the support hook, samples in the volumetric flask are poured, and the lifting wire hole is completely separated from the support hook when returning to the original position.

The volumetric flask has a constant volume of between 0.5 and 5 liters.

The utility model has the advantages that: the utility model discloses can realize the full-automatic online sampling process control to the fluid, isolated system is to the influence of weighing, emptys clear water and fluid messenger volumetric flask and keeps clean, can accomplish the measurement and the calculation to fluid density automatically. The whole device has simple structure, high automation degree and high measurement precision, and is suitable for on-line accurate measurement and monitoring application of fluid density in an industrial field.

Drawings

Fig. 1 is a schematic structural view of the empty volumetric flask of the utility model.

Fig. 2 is the schematic view of the hook structure of the lifting line and the bracket of the present invention.

In the figure: 1 controller, 2 weighing device, 21 weighing module, 22 weighing support, 23 weighing support couple, 3 clear water and measured fluid sampling device 31 clear water and measured fluid inlet, 32 clear water motorised valve, 33 clear water import, 34 measured fluid import, 35 measured fluid motorised three-way valve, 36 measured fluid abandons a kind export, 4 elevating gear, 41 lifts, 42 lifting lines, 43 weight, 44 lifting line hole, 5 volumetric flask, 51 volumetric flask funnel, 52 volumetric flask overflow mouth, 53 volumetric flask gas vent.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1, the utility model relates to a full-automatic on-line weighing fluid densimeter capable of isolating system and dumping sample, which comprises a weighing device 2, a volumetric flask 5, a clean water and measured fluid sampling device 3, a lifting device 4 and a controller 1 which are independently installed, wherein a weighing module 21 for weighing is arranged above the bottom of the volumetric flask 5, a volumetric flask exhaust port 53 is arranged on the top of the volumetric flask 5, a volumetric flask funnel 51 is arranged above the volumetric flask 5, a volumetric flask overflow port 52 is arranged on the bottom pipe orifice wall of the volumetric flask funnel 51, the lifting device 4 comprises a lifter 41, a lifting line 42, a lifting line hole 44 and a heavy hammer 43, the weighing device 2 comprises a weighing bracket 22, the weighing module 21 and a bracket hook 23, the weighing bracket 22 is suspended below the weighing module 21 and lifts the volumetric flask 5, the weighing bracket 22 is provided with the bracket hook 23 at the bottom, the bracket hook 23 is used in combination with the lifting line 42, the clean water measured fluid sample introduction device 3 comprises a clean water and measured fluid inlet 31, a clean water electric valve 32, a clean water inlet 33, a measured fluid inlet 34, a measured fluid electric three-way valve 35 and a measured fluid sample discarding outlet 36, the lifter 41, the measured fluid electric three-way valve 35, the clean water electric valve 32 and the weighing module 21 are in signal connection with the controller 1, and the weighing module 21 is used for weighing the weight of the volumetric flask 5 in a state of being filled with clean water and the volumetric flask 5 in a state of being filled with fluid and sending the weight parameter to the controller 1; the controller 1 calculates the density of the fluid in the volumetric flask 5 according to the weights of the volumetric flask 5 in the state of being filled with clear water and the volumetric flask 5 in the state of being filled with the fluid, and sends control signals to the clear water electric valve 32, the measured fluid electric three-way valve 35 and the lifter 41.

Wherein the volumetric flask 5 has a volumetric volume of between 0.5 and 5 liters.

The full-automatic on-line weighing fluid density measurement steps are as follows:

the volumetric flask 5 is washed firstly, the measured fluid is switched to flow to the measured fluid sample discarding outlet 36 through the measured fluid electric three-way valve 35, the clean water electric valve 32 is turned on, the clean water flows to the clean water and the measured fluid inlet 31 and then enters the volumetric flask 5, the clean water overflows from the volumetric flask overflow port 52 after the volumetric flask 5 is filled, the clean water electric valve 32 is closed, the controller 1 controls the lifting device 4, when the lifting line 42 is lifted upwards, the lifting line hole 44 hooks the support hook 23, the sample in the volumetric flask 5 is dumped, and the lifting line 2 returns to the original position.

Clear water in the volumetric flask 5 weighs, the measured fluid flows to the measured fluid through being measured the switching of fluid electric three-way valve 35 and abandons a kind export 36, open clear water electric valve 32, clear water flows to clear water and measured fluid import 31, reentrant volumetric flask 5, clear water overflows from volumetric flask overflow mouth 52 after volumetric flask 5 is filled up, close clear water electric valve 32, weighing module 21 reading, controller 1 control elevating gear 4, lift lifting wire 42 when upwards, lifting wire hole 44 hooks support couple 23, empty the interior sample of volumetric flask 5, lifting wire 2 gets back to the normal position.

Weighing the fluid in the volumetric flask 5, closing the clear water motorised valve 32, the fluid to be measured switches to flow to clear water and the fluid import 31 to be measured through the fluid to be measured electro-dynamic three-way valve 35, the fluid gets into the volumetric flask 5, the fluid overflows from the volumetric flask overflow mouth 52 after the volumetric flask 5 is filled up, the fluid to be measured electro-dynamic three-way valve 35 switches to flow to the fluid to be measured and abandons a kind export 36, weighing module 21 reading controller 1 control elevating gear 4, when lifting line 42 upwards, lifting line hole 44 hooks support couple 23, empty the sample in the volumetric flask 5, lifting line 2 gets back to the normal position.

The above steps are not a loop.

The foregoing are only preferred embodiments of this patent, and it should be noted that those skilled in the art

It will be understood that various modifications and substitutions can be made without departing from the spirit of the patent and these are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides an isolated system's fluid densitometer of weighing on line which characterized in that: the device comprises a weighing device, a volumetric flask, clean water, a measured fluid sample introduction device, a lifting device and a controller which are independently installed, wherein a weighing module for weighing is arranged above the bottom of the volumetric flask, a volumetric flask exhaust port is formed in the top of the volumetric flask, a volumetric flask funnel is arranged above the volumetric flask, a volumetric flask overflow port is formed in the wall of a bottom pipe orifice of the volumetric flask funnel, the lifting device comprises a lifter, a lifting line hole and a heavy hammer, the weighing device comprises a weighing support, a weighing module and a support hook, the weighing support is hung below the weighing module and lifts the volumetric flask, the weighing support is provided with a support hook at the bottom, the support hook is combined with the lifting line for application, the measured fluid sample introduction device of the clean water comprises clean water, a measured fluid inlet, clean water, a clean water inlet, a measured fluid inlet and a measured fluid electric three-way valve, the device comprises a measured fluid abandoned sample outlet, a lifting device, a measured fluid electric three-way valve, a clean water electric valve and a weighing module which are in signal connection with a controller, wherein the weighing module is used for weighing the weight of the volumetric flask in a state of being filled with clean water and the volumetric flask in a state of being filled with fluid and sending weight parameters to the controller; the controller calculates the density of the fluid in the volumetric flask according to the weight when the volumetric flask is fully filled with clear water and the fluid in the volumetric flask is fully filled with the fluid, and sends control signals to the clear water electric valve, the measured fluid electric three-way valve and the lifter.

2. The isolated system in-line weighing fluid densitometer of claim 1, wherein: when the clean water is required to be weighed, the measured fluid flows to a measured fluid sample discarding outlet through a measured fluid electric three-way valve, a clean water electric valve is opened, the clean water flows to the clean water and the measured fluid inlet and then enters the volumetric flask, the clean water overflows from an overflow port of the volumetric flask after the volumetric flask is filled with the measured fluid, a clean water electric valve is closed, the reading of a weighing module is obtained, when the fluid is required to be weighed, the clean water electric valve is closed, the measured fluid flows to the clean water and the measured fluid inlet through the switching of the measured fluid electric three-way valve, the fluid enters the volumetric flask, the fluid overflows from the overflow port of the volumetric flask after the volumetric flask is filled with the measured fluid, the measured fluid electric three-way valve flows to a measured fluid sample discarding outlet, and the reading of the weighing module is obtained.

3. The isolated system in-line weighing fluid densitometer of claim 1, wherein: after the volumetric flask is filled with clear water or fluid and weighed, the controller controls the lifting device, when the lifting wire is lifted upwards, the lifting wire hole hooks the support hook, samples in the volumetric flask are poured, and when the lifting wire returns to the original position, the lifting wire hole is completely separated from the support hook.

4. The isolated system in-line weighing fluid densitometer of claim 1, wherein: the volumetric flask has a constant volume of between 0.5 and 5 liters.