Secondary steam condensate water flow measuring device of desulfurization wastewater flash evaporation system

Abstract

The utility model discloses a secondary steam condensate water flow measuring device of a desulfurization wastewater flash evaporation system, which is mounted on a condensate water pipeline, a separation collecting pipe is arranged between an inlet pipe and an outlet pipe, measuring pipes are communicated below the separation collecting pipe, an isolation plate is arranged between the measuring pipes, and a negative pressure transmission channel is formed between the upper part of the isolation plate and the separation collecting pipe. The horizontal position of the negative pressure transmission channel is higher than that of the inlet and outlet pipe, the horizontal position of the measuring pipe is lower than that of the inlet and outlet pipe, the outlet pipe is not higher than the inlet pipe, and a flowmeter is installed on a vertical pipeline of the measuring pipe. The pipe diameters of the inlet pipe and the outlet pipe are equal, the pipe diameter of the measuring pipe is not larger than the pipe diameter of the inlet pipe and not smaller than 3 / 4 of the pipe diameter of the inlet pipe, the pipeline sectional area of the separation collecting pipe is not smaller than two times of the sectional area of the inlet pipe, and the sectional area of the isolation plate is half of the pipeline sectional area of the separation collecting pipe. Under the condition of not influencing condensate water flow and negative pressure transmission, flow measurement of condensate water is achieved through a conventional flow meter.

Description

TECHNICAL FIELD

[0001] The utility model belongs to industrial wastewater zero discharge treatment technical field, be applied to the evaporation concentration treatment of high concentration pollution wastewater such as industrial wastewater, desulfurization wastewater negative pressure multi -effect evaporation system, and specifically related to a kind of desulfurization wastewater flash system secondary steam condensate flow measuring device. BACKGROUND

[0002] In the evaporation concentration treatment of high concentration pollution wastewater such as industrial wastewater, desulfurization wastewater, negative pressure multi -effect evaporation system is mostly applied to concentrate, in the system operation process, the evaporation of each effect or secondary steam quantity is important parameter reflecting system operation condition, and is also the basis of system equipment operation adjustment.Secondary steam pipeline diameter of desulfurization wastewater negative pressure evaporation system is very large, if using steam flow meter to measure, first, large-diameter flow meter is expensive, second, according to the installation requirement of flow meter, there is basically no space to install flow meter on site, and it is not realistic to directly measure secondary steam.

[0003] The flow measurement of secondary steam can also use condensate flow measurement, combined with the pressure, temperature measurement data of secondary steam and the steam density under corresponding pressure, temperature to calculate the flow value of secondary steam.But in desulfurization wastewater negative pressure evaporation system, secondary steam is condensed after heat exchange, flows to condensate tank through condensate pipe horizontally or downward, and the water pipe is in non-full pipe state gravity flow in condensate pipe, the lower space in pipe is condensate water, and the upper space is used as negative pressure transmission, and normal flow measurement is pressure pipeline, which is full pipe flow state, so it is impossible to measure flow data by conventional method, so that whether the actual evaporation of each effect of evaporation system reaches or exceeds the design value cannot be checked.At present, secondary steam flow measurement is not used in most existing evaporation concentration systems of industrial wastewater and desulfurization wastewater, and only relies on design quantity estimation or measurement of each effect liquid concentration to estimate concentration ratio to calculate secondary steam flow, which cannot realize full-process data monitoring, and greatly affects the safe and stable operation of desulfurization wastewater negative pressure evaporation concentration system. SUMMARY

[0004] In view of the above problems existing in the prior art, the utility model provides a kind of desulfurization wastewater flash system secondary steam condensate flow measuring device.

[0005] The utility model has the advantages of the following manner:

[0006] The application discloses a secondary steam condensate flow measuring device of a desulfurization wastewater flash system, which comprises a measuring assembly installed on a condensate pipeline, wherein the measuring assembly comprises an inlet pipe and an outlet pipe, a separation and collection pipe is arranged between the inlet pipe and the outlet pipe, a measuring pipe is communicated below the separation and collection pipe, a separation plate is arranged between the measuring pipes, a negative pressure transmission channel is formed between the separation plate and the separation and collection pipe above the separation plate, a liquid inlet channel is formed between the separation plate and the inlet pipe, a liquid outlet channel is formed between the separation plate and the outlet pipe, the horizontal position of the negative pressure transmission channel is higher than the horizontal positions of the inlet pipe and the outlet pipe, the horizontal position of the measuring pipe is lower than the horizontal positions of the inlet pipe and the outlet pipe, the horizontal position of the outlet pipe is not higher than the horizontal position of the inlet pipe, and a flow meter is installed on the vertical pipeline of the measuring pipe; the pipe diameter of the inlet pipe is equal to that of the outlet pipe, the pipe diameter of the measuring pipe is not greater than that of the inlet pipe and not less than 3 / 4 of the pipe diameter of the inlet pipe, the pipeline cross-sectional area of the separation and collection pipe is not less than 2 times the cross-sectional area of the inlet pipe, and the cross-sectional area of the separation plate is half of the pipeline cross-sectional area of the separation and collection pipe.

[0007] The measuring pipe is in a U shape or a V shape.

[0008] There is a straight pipe section with a length of more than 10 times the pipe diameter before the installation point of the flow meter, and there is a straight pipe section with a length of more than 5 times the pipe diameter after the installation point of the flow meter.

[0009] Compared with the prior art, the application installs a specially designed measuring assembly on the condensate pipeline, divides the pipeline into a measuring pipeline and a negative pressure transmission channel, makes the measuring pipeline in a full-pipe flow state so as to measure the flow of the condensate by using a conventional flow meter, and does not affect the negative pressure transmission of the system.

[0010] The application realizes the indirect measurement of the flow of the secondary steam by using the measuring device to measure the flow of the secondary steam of the desulfurization wastewater flash system, using the conventional flow meter to measure the flow of the condensate under the condition of not affecting the flow and negative pressure transmission of the condensate, using the flow measurement of the condensate, the pressure and temperature measurement data of the secondary steam and the steam density under the corresponding pressure and temperature to calculate the flow value of the secondary steam, and realizing the indirect measurement of the flow of the secondary steam. The application realizes the monitoring and evaluation of the actual evaporation of each effect of the desulfurization wastewater negative pressure evaporation system and provides the most direct operation data for the operation control of the evaporation system. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structure schematic of the application Figure 1 .

[0012] Figure 2 is a structure schematic of the application Figure 2 .

[0013] Figure 3 is a structure schematic of the application Figure 3 .

[0014] Figure 4The structure diagram of the utility model Figure 4 . DETAILED DESCRIPTION

[0015] The utility model will be further described below in combination with the drawings and specific embodiments. It should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model. After reading the content of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms are also within the scope defined by the utility model.

[0016] As Figure 1 Indicated, a kind of desulfurization wastewater flash system secondary steam condensate flow measuring device, including the measuring component of being installed on condensate pipe, measuring component includes inlet pipe 1, outlet pipe 2, separation manifold 3 is arranged between inlet pipe 1, outlet pipe 2, separation manifold 3 is communicated with measuring pipe 4 below, separation manifold 3 is formed between the negative pressure transmission channel between measuring pipe 4 and separation manifold 3 top, separation manifold 3 and inlet pipe 1 form liquid inlet passage between separation manifold 3 and inlet pipe 1, separation manifold 3 and outlet pipe 2 form liquid outlet passage between separation manifold 3 and outlet pipe 2, the horizontal position of negative pressure transmission channel is higher than the horizontal position of inlet pipe and outlet pipe, the horizontal position of measuring pipe 4 is lower than the horizontal position of inlet pipe and outlet pipe, and outlet pipe horizontal position is not higher than the horizontal position of inlet pipe, flowmeter 6 is installed on measuring pipe 4, flowmeter 6 is installed on the vertical pipe of measuring pipe 4, and its measured value can indirectly reflect the flow value of secondary steam. The pipe cross-sectional area of separation manifold 3 is not less than 2 times the cross-sectional area of inlet pipe 1;The cross-sectional area of separation manifold 5 is half of the pipe cross-sectional area of separation manifold 3;In measuring component, inlet pipe, outlet pipe diameter is equal, and the diameter of measuring pipe is not greater than the diameter of inlet pipe and not less than 3 / 4 of the diameter of inlet pipe.

[0017] In the flow direction of condensate, inlet pipe 1 is connected with condensate inflow direction, outlet pipe 2 is connected with condensate outflow direction, and condensate is turned down into measuring pipe 4 through liquid inlet passage between separation manifold 5 and inlet pipe 1, is turned up into liquid outlet passage between separation manifold 5 and outlet pipe 2 at the tail end of measuring pipe 4, and the horizontal position of measuring pipe 4 is lower than the horizontal position of inlet pipe 1 and outlet pipe 2, so that the condensate in measuring pipe 4 is full, is full pipe flow state, meets the flowmeter measurement condition, and the flow can be normally measured when flowmeter is installed on measuring pipe. The negative pressure transmission channel between separation manifold 5 top and separation manifold 3 is empty pipe without condensate, so the transmission of negative pressure before and after measuring component is not affected by condensate in measuring pipe 4.

[0018] The flow meter 6 is most preferably a mass flow meter, a turbine flow meter, and secondly an electromagnetic flow meter, and other forms such as orifice, vortex flow meter are not suitable. The data measured by the flow meter 6 can be combined with the pressure and temperature measurement data of the secondary steam, and the steam density at the corresponding pressure and temperature to calculate the flow value of the secondary steam.

[0019] Further, the measuring pipe 4 is U-shaped. As shown in Figure 1 、 Figure 2 and Figure 3 , the bottom of the U shape can be a circular arc transition, or a right angle transition, or a V-shaped transition. In addition to the above U shape, as shown in Figure 4 , the shape of the measuring pipe can also be that one side pipe is a vertical pipe and the other side pipe is an inclined pipe, and the vertical pipe and the inclined pipe form a V shape as a whole. The measuring pipe can also be other shapes in which one pipe is a vertical pipe.

[0020] The length of the measuring pipe shall meet the installation requirements of the flow meter. Generally, there shall be a straight pipe section of more than 10 times the pipe diameter before the installation point of the flow meter, and a straight pipe section of more than 5 times the pipe diameter after the installation point.

[0021] Compared with the prior art, the measurement device disclosed by the utility model is used to measure the flow of secondary steam condensate water in a desulfurization wastewater flash evaporation system, and the flow of the condensate water is measured by a conventional flow meter without affecting the flow of the condensate water and the transmission of negative pressure. The flow value of the secondary steam is calculated by combining the flow measurement of the condensate water with the pressure and temperature measurement data of the secondary steam, and the steam density at the corresponding pressure and temperature, so as to realize the indirect measurement of the flow of the secondary steam. The actual evaporation amount of each effect of the desulfurization wastewater negative pressure evaporation system is monitored and evaluated, and the most direct operation data is provided for the operation control of the evaporation system.

[0022] The preferred embodiments described above are only preferred embodiments of the utility model, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the utility model, a number of changes and improvements can be made, and these should also be regarded as the protection range of the utility model.

Claims

1. A desulfurization wastewater flash system secondary steam condensate water flow measuring device, characterized in that: The utility model relates to a kind of condensate water measuring devices, including the measuring component installed on condensate water pipeline, measuring component includes inlet pipe (1), outlet pipe (2), and the separating collector pipe (3) is arranged between inlet pipe (1), outlet pipe (2), and the measuring pipe (4) is communicated below separating collector pipe (3), and the separating plate (5) is arranged between measuring pipe (4), and the negative pressure transmission channel is formed between separating plate (5) top and separating collector pipe (3), and the liquid inlet channel is formed between separating plate (5) and inlet pipe (1), and the liquid outlet channel is formed between separating plate (5) and outlet pipe (2), and the horizontal position of negative pressure transmission channel is higher than the horizontal position of inlet pipe and outlet pipe, and the horizontal position of measuring pipe (4) is lower than the horizontal position of inlet pipe and outlet pipe, and outlet pipe horizontal position is not higher than the horizontal position of inlet pipe, and flowmeter (6) is installed on the vertical pipeline of measuring pipe (4);Inlet pipe (1), outlet pipe (2) pipe diameter is equal, and the pipe diameter of measuring pipe (4) is not greater than the pipe diameter of inlet pipe (1) and not less than 3 / 4 of the pipe diameter of inlet pipe (1), and the pipeline cross-sectional area of separating collector pipe (3) is not less than 2 times the cross-sectional area of inlet pipe (1), and the cross-sectional area of separating plate (5) is half of the pipeline cross-sectional area of separating collector pipe (3).

2. The desulfurization wastewater flash system secondary steam condensate flow measuring device of claim 1, wherein: Measuring pipe (4) is U-shaped or V-shaped.

3. The desulfurization wastewater flash system secondary steam condensate flow measuring device of claim 1, wherein: There is 10 times pipe diameter or more straight pipe section before the installation point of flowmeter (6), and there is 5 times pipe diameter or more straight pipe section after the installation point.

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