CN216206801U - Double-flange single-chamber liquid level meter for measuring liquid level of boiler - Google Patents
Double-flange single-chamber liquid level meter for measuring liquid level of boiler Download PDFInfo
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- CN216206801U CN216206801U CN202122454694.4U CN202122454694U CN216206801U CN 216206801 U CN216206801 U CN 216206801U CN 202122454694 U CN202122454694 U CN 202122454694U CN 216206801 U CN216206801 U CN 216206801U
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Abstract
The utility model discloses a double-flange single-chamber liquid level meter for measuring the liquid level of a boiler, which comprises a steam side root valve, a negative pressure side single-chamber balance container, a differential pressure transmitter, a positive pressure side single-chamber balance container and a water side root valve. The steam in the boiler barrel reaches the negative pressure side single-chamber balance container from the first pipeline, and then the liquefied water reaches the positive pressure side of the differential pressure transmitter from the negative pressure side single-chamber balance container; the water in the boiler barrel reaches the positive pressure side single-chamber balance container from the fourth pipeline and then reaches the negative pressure side of the differential pressure transmitter from the positive pressure side single-chamber balance container; the differential pressure transmitter measures the pressure from the negative pressure side single-chamber balance container and the positive pressure side single-chamber balance container. Because the single-chamber balance container has simple structure, high reliability, small measurement deviation, stable signal and timely following, the real water level of the boiler barrel can be timely and accurately measured after the negative pressure side single-chamber balance container, the positive pressure side single-chamber balance container and the differential pressure transmitter are matched for use, and the reliability is high.
Description
Technical Field
The utility model relates to the technical field of boiler liquid level measurement, in particular to a double-flange single-chamber liquid level meter for measuring the liquid level of a boiler.
Background
In the operating condition of the boiler, one of important reference factors for evaluating the operating safety of the boiler by the real liquid level of the boiler barrel and proper water level can ensure that the boiler can stably operate under the working conditions of high energy efficiency and low energy consumption. When the water level is too low, the boiler barrel can be burnt without water, the boiler barrel is burnt through, the water-cooled wall is broken, and the like, which seriously affect the equipment; when the water level is too high, the quality of the produced steam is affected, and the use of downstream steam users is adversely affected.
The double-chamber balance container is matched with a water level indicator or a differential pressure transmitter for use, can monitor the water level of a steam drum in the boiler starting and stopping process and under the normal operation condition of the boiler, and outputs a differential pressure signal when the water level changes to the outside to ensure the safe operation of the boiler. However, when the process conditions are changed greatly, especially during the startup and shutdown phases, the fluctuation of the water column in the double-chamber balance container is large, and even the negative pressure side is not full, so that the measured data is unreliable, and the operation safety of the boiler is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to the defects in the prior art, and the main object of the present invention is to provide a double-flange single-chamber liquid level meter for measuring the liquid level of a boiler, which has a simple structure and high reliability, so as to overcome the defects in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the application provides a double-flange single-chamber liquid level meter for measuring the liquid level of a boiler, which comprises a steam side root valve, a negative pressure side single-chamber balance container, a differential pressure transmitter, a positive pressure side single-chamber balance container and a water side root valve; a first pipeline is connected between the boiler barrel and the negative pressure side single-chamber balance container, and the steam side root valve is arranged on the first pipeline; a second pipeline is connected between the negative pressure side single-chamber balance container and the differential pressure transmitter; a third pipeline is connected between the differential pressure transmitter and the positive pressure side single-chamber balance container; the single-chamber balancing container of malleation side with be connected with the fourth pipeline between the drum, water side root valve sets up on the fourth pipeline.
Furthermore, a plug is arranged at the top of the negative pressure side single-chamber balance container.
Preferably, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are wrapped with heat insulation layers.
Further, the first pipeline is obliquely arranged between the boiler barrel and the negative pressure side single-chamber balance container, and the height of the connecting end of the first pipeline and the negative pressure side single-chamber balance container is larger than that of the connecting end of the first pipeline and the boiler barrel.
Furthermore, the positive pressure side and the negative pressure side of the differential pressure transmitter are both provided with flanges.
Preferably, the steam side root valve is a gate valve or a stop valve.
Preferably, the water side root valve is a gate valve or a stop valve.
Compared with the prior art, the double-flange single-chamber liquid level meter for measuring the liquid level of the boiler has obvious advantages and beneficial effects, and particularly, the double-flange single-chamber liquid level meter for measuring the liquid level of the boiler comprises a steam side root valve, a negative pressure side single-chamber balance container, a differential pressure transmitter, a positive pressure side single-chamber balance container and a water side root valve. The steam in the boiler barrel reaches the negative pressure side single-chamber balance container from the first pipeline, and then the liquefied water reaches the positive pressure side of the differential pressure transmitter from the negative pressure side single-chamber balance container; the water in the boiler barrel reaches the positive pressure side single-chamber balance container from the fourth pipeline and then reaches the negative pressure side of the differential pressure transmitter from the positive pressure side single-chamber balance container; the differential pressure transmitter measures the pressure from the negative pressure side single-chamber balance container and the positive pressure side single-chamber balance container, and the single-chamber balance container has simple structure, high reliability, small measurement deviation, stable signal and timely following, so that the real water level of the boiler barrel can be measured timely.
In addition, all be provided with the valve on first pipeline and the fourth pipeline, be convenient for maintain and the debugging. The first pipeline, the second pipeline, the third pipeline and the fourth pipeline are wrapped by the heat insulation layers, and the influence of the external temperature on the measurement accuracy can be reduced.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic view of a negative pressure side single chamber equalization vessel according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an embodiment of the present invention.
The attached drawings indicate the following:
10. boiler barrel 11 and steam side root valve
12. Negative pressure side single chamber balance container 13, differential pressure transmitter
14. Positive pressure side single chamber balance container 15, water side root valve
16. First pipeline 17, second pipeline
18. Third pipeline 19, fourth pipeline
20. And (7) a plug.
Detailed Description
Referring to fig. 1 to 2, a specific structure of a preferred embodiment of the present invention is shown, which is a double-flange single-chamber liquid level meter for measuring the liquid level of a boiler.
Wherein the measured two-chamber equilibrium vessel is optimized as a single-chamber equilibrium vessel. Because the single-chamber balance container has simple structure, high reliability, small measurement deviation, stable signal and timely following, the water level measured by the differential pressure transmitter 13 is accurate and stable, and the real water level of the boiler barrel 10 can be reflected in time.
The application provides a double-flange single-chamber liquid level meter for measuring the liquid level of a boiler, which comprises a steam side root valve 11, a negative pressure side single-chamber balance container 12, a differential pressure transmitter 13, a positive pressure side single-chamber balance container 14 and a water side root valve 15; a first pipeline 16 is connected between the boiler barrel 10 and the negative pressure side single-chamber balancing container 12, and the steam side root valve 11 is arranged on the first pipeline 16; a second pipeline 17 is connected between the negative pressure side single-chamber balance container 12 and the differential pressure transmitter 13; a third pipeline 18 is connected between the differential pressure transmitter 13 and the positive pressure side single-chamber balance container 14; a fourth pipeline 19 is connected between the positive pressure side single-chamber balancing container 14 and the drum 10, and the water side root valve 15 is arranged on the fourth pipeline 19. The first conduit 16 samples the steam pressure within the drum 10. The steam in the drum 10 reaches the negative pressure side single-chamber balance container 12 from the first pipeline 16, and then the liquefied water reaches the positive pressure side of the differential pressure transmitter 13 from the negative pressure side single-chamber balance container 12; the water in the drum 10 reaches the positive pressure side single-chamber balance container 14 from the fourth pipeline 19, and then reaches the negative pressure side of the differential pressure transmitter 13 from the positive pressure side single-chamber balance container 14; the differential pressure transmitter 13 measures the pressure from the negative pressure side single-chamber balance container 12 and the positive pressure side single-chamber balance container 14, and the single-chamber balance container has simple structure, high reliability, small measurement deviation, stable signal and timely following, so that the real water level of the boiler barrel 10 can be measured in time. The positive pressure side and the negative pressure side of differential pressure transmitter 13 are both provided with flanges. Second pipeline 17 and third pipeline 18 pass through flange joint on differential pressure transmitter 13, are convenient for maintain the transformation. The first pipeline 16 is led to the negative pressure side single-chamber balance container 12 from the sampling hole of the boiler barrel 10, when high-temperature steam state medium is measured, because the temperature difference is large, saturated steam entering the negative pressure side single-chamber balance container 12 is continuously condensed into water through heat exchange with the outside, redundant water flows back to a steam pocket from the first pipeline 16 due to the overflow principle, the water level in the negative pressure side single-chamber balance container 12 is kept constant, and then the liquid column height of the negative pressure side is guaranteed to be constant, namely the negative pressure side serving as a reference end of the differential pressure transmitter 13 is a fixed numerical value.
The measurement principle is as follows: under the normal working condition, two valves, namely a steam side root valve 11 and a water side root valve 15 are opened, the pressure P & lt- & gt of steam in the boiler barrel 10 is introduced into a negative pressure side single-chamber balance container 12, the pressure P & lt + & gt of water is introduced into a positive pressure side single-chamber balance container 14, the negative pressure side of a differential pressure transmitter 13 is kept unchanged due to constant water columns in the balance container, the positive pressure side changes along with the change of the water level of a steam drum, and the real water level of the boiler barrel 10 can be obtained easily by measuring the differential pressure delta P = P & lt + & gt-P & gt of a positive pipeline and a negative pipeline and then according to a formula P = rho & lt & gtg & lt.
Further, a plug 20 is arranged at the top of the negative pressure side single-chamber balancing container 12. In the starting stage, as the liquid level does not exist in the drum 10, the plug 20 is opened at the moment, the negative pressure side single-chamber balancing container 12 is filled with water to the overflow water level, and after the liquid level rises to a visible part and is compared with the field liquid level meter, the meter calibration is not needed again.
Preferably, the first pipeline 16, the second pipeline 17, the third pipeline 18 and the fourth pipeline 19 are wrapped with insulating layers. The heat-insulating layer is preferably a laminated structure made of one of polystyrene foam plastics, polyurethane foam plastics, foam glass and foam asbestos. The influence of external temperature on measurement accuracy can be reduced after the heat preservation layer is arranged.
Further, the first pipeline 16 is obliquely arranged between the boiler barrel 10 and the negative pressure side single-chamber balance container 12, wherein the height of the connecting end of the first pipeline 16 and the negative pressure side single-chamber balance container 12 is larger than that of the connecting end of the first pipeline 16 and the boiler barrel 10. Because the temperature difference is great, the saturated steam entering the negative pressure side single-chamber balance container 12 is continuously condensed into water through heat exchange with the outside, and redundant water flows back to the steam pocket from the first pipeline 16 due to the overflow principle, so that the water level in the negative pressure side single-chamber balance container 12 is kept constant, and the liquid column height of the negative pressure side is further ensured to be constant.
Preferably, the steam side root valve 11 is a gate valve or a stop valve.
Preferably, the water side root valve 15 is a gate valve or a stop valve.
In summary, the design of the present invention is characterized in that the single-chamber balance container has the characteristics of simple structure, high reliability, small measurement deviation, stable signal and follow-up. Therefore, after the negative pressure side single-chamber balance container 12, the positive pressure side single-chamber balance container 14 and the differential pressure transmitter 13 are used in a matched mode, the real water level of the boiler barrel 10 can be measured timely and accurately, and reliability is high.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (7)
1. The utility model provides a two flange list room level gauges for boiler level measurement which characterized in that: the device comprises a steam side root valve, a negative pressure side single-chamber balance container, a differential pressure transmitter, a positive pressure side single-chamber balance container and a water side root valve; a first pipeline is connected between the boiler barrel and the negative pressure side single-chamber balance container, and the steam side root valve is arranged on the first pipeline; a second pipeline is connected between the negative pressure side single-chamber balance container and the differential pressure transmitter; a third pipeline is connected between the differential pressure transmitter and the positive pressure side single-chamber balance container; the single-chamber balancing container of malleation side with be connected with the fourth pipeline between the drum, water side root valve sets up on the fourth pipeline.
2. A double flange single chamber level gauge for boiler level measurement according to claim 1, characterized in that: and a plug is arranged at the top of the negative pressure side single-chamber balance container.
3. A double flange single chamber level gauge for boiler level measurement according to claim 1, characterized in that: the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are wrapped with heat insulation layers.
4. A double flange single chamber level gauge for boiler level measurement according to claim 1, characterized in that: the first pipeline is obliquely arranged between the boiler barrel and the negative pressure side single-chamber balance container, wherein the height of the connecting end of the first pipeline and the negative pressure side single-chamber balance container is greater than that of the connecting end of the first pipeline and the boiler barrel.
5. A double flange single chamber level gauge for boiler level measurement according to claim 1, characterized in that: and flanges are arranged on the positive pressure side and the negative pressure side of the differential pressure transmitter.
6. A double flange single chamber level gauge for boiler level measurement according to claim 1, characterized in that: the steam side root valve is a gate valve or a stop valve.
7. A double flange single chamber level gauge for boiler level measurement according to claim 1, characterized in that: the water side root valve is a gate valve or a stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454694.4U CN216206801U (en) | 2021-10-12 | 2021-10-12 | Double-flange single-chamber liquid level meter for measuring liquid level of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454694.4U CN216206801U (en) | 2021-10-12 | 2021-10-12 | Double-flange single-chamber liquid level meter for measuring liquid level of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216206801U true CN216206801U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122454694.4U Active CN216206801U (en) | 2021-10-12 | 2021-10-12 | Double-flange single-chamber liquid level meter for measuring liquid level of boiler |
Country Status (1)
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| CN (1) | CN216206801U (en) |
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2021
- 2021-10-12 CN CN202122454694.4U patent/CN216206801U/en active Active
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