Automatic condensed water ammonia water configuration device

Abstract

The application provides a kind of condensed water ammonia water automatic configuration device, including ammonia tank, liquid level meter and PLC, is provided with liquid inlet passage and gas inlet passage in ammonia tank side wall, liquid inlet passage includes liquid inlet pipe and the liquid inlet valve of communication connection with PLC, gas inlet passage includes gas inlet pipe and the gas inlet valve of communication connection with PLC, is provided with liquid outlet passage below ammonia tank;Liquid level meter is arranged on the outside wall of ammonia tank and is communicated with ammonia tank, and a liquid level sensor is installed in it and is communicated with PLC, liquid concentration meter is also arranged in the inside of ammonia tank, including measuring head and display module, measuring head is placed in the inside of ammonia tank body, display module is communicated with PLC.The beneficial effect of the application is that the application uses PLC to control the connection and disconnection of liquid inlet passage and gas inlet passage, uses ammonia gas to prepare ammonia water in water, avoids using liquid ammonia to prepare ammonia water to volatilize a large amount of ammonia gas to cause damage to workers, while accurately controlling the concentration of prepared ammonia water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ammonia water preparation, in particular to an automatic condensate ammonia water preparation device. BACKGROUND

[0002] Because various nitrogen compounds are generated when the boiler of a thermal power plant is combusted, the atmosphere is polluted after being emitted from the chimney. Therefore, ammonia water needs to be used for denitration operation, and ammonia water is sprayed in the tail flue of the boiler to combine with the nitrogen compounds in the flue gas to sink, thereby reducing the nitrogen compound emission amount in the flue gas.

[0003] The existing power plant usually purchases high-concentration ammonia water and then uses a dilution method to prepare ammonia water solution with a concentration, and during the preparation process, a large amount of ammonia gas is volatilized, which can cause very serious ammonia smell in the dosing room, and the preparation environment is very poor, which can cause great harm to the human body. In addition, the valves of the preparation control pipeline are all manual valves, and during the manual operation process, the concentration of the prepared ammonia water cannot be accurately controlled. At the same time, the preparation of ammonia water with a concentration by the liquid ammonia dilution method and the volatilization of a large amount of ammonia gas from the liquid ammonia due to the temperature influence can also cause the concentration of the prepared ammonia water to be uncontrollable.

[0004] Therefore, in view of the above defects, an automatic condensate ammonia water preparation device is designed. SUMMARY

[0005] The technical problem to be solved by the present application is that the ammonia water is prepared by high-concentration liquid ammonia, the concentration of the ammonia water is not accurately controlled, and the volatilized ammonia gas in the preparation process can affect the environment and cause harm to the human body.

[0006] The technical solution adopted by the present application to solve the technical problem is:

[0007] An automatic condensate ammonia water preparation device is provided, which comprises an ammonia water tank, a liquid level meter and a PLC. A liquid inlet channel and a gas inlet channel are arranged on the side wall of the ammonia water tank. The liquid inlet channel comprises a liquid inlet pipe and a liquid inlet valve in communication connection with the PLC. The gas inlet channel comprises a gas inlet pipe and a gas inlet valve in communication connection with the PLC. The gas inlet pipe extends to the inside of the ammonia water tank. A liquid outlet channel is arranged below the ammonia water tank, which comprises a liquid outlet pipe and a liquid outlet valve.

[0008] The liquid level meter is arranged on the outer side wall of the ammonia water tank and is in communication with the ammonia water tank. A liquid level sensor in communication connection with the PLC is arranged in the liquid level meter. A liquid concentration meter is arranged in the inside of the ammonia water tank, which comprises a measuring head and a display module. The measuring head is arranged in the inside of the tank body of the ammonia water tank. The display module is in communication connection with the PLC.

[0009] Preferably, the gas inlet channel is arranged above the liquid inlet channel, and the gas inlet pipe is bent downward.

[0010] As preferred, a nozzle with multiple air injection holes in different directions is arranged at the end of the air inlet pipe.

[0011] As preferred, a telescopic pipe controlled by the PLC is arranged at the end of the air inlet pipe, and the nozzle is arranged at the end of the telescopic pipe.

[0012] As preferred, a stirring part is arranged at the inner bottom of the ammonia water tank.

[0013] As preferred, a flow guide pipe in communication with the ammonia water tank is arranged at the position close to the upper end and the lower end of the liquid level meter, and the liquid level meter is made of transparent material and is provided with a scale line on the surface.

[0014] As preferred, a touch screen is arranged on the PLC, which can control the opening and closing of the liquid inlet valve and the air inlet valve.

[0015] As preferred, the lower end of the measuring head of the liquid concentration meter extends to the position below the liquid level meter, and the display module is arranged outside the ammonia water tank and is sealingly connected with the ammonia water tank.

[0016] As preferred, a cooling pipe is further arranged, which is spirally arranged on the inner wall of the ammonia water tank, and the water inlet and the water outlet of the cooling pipe extend outside the ammonia water tank.

[0017] As preferred, a large gap is arranged between the pipe bodies of the spirally arranged cooling pipe.

[0018] The present application has the following advantages: the present application uses the PLC to control the opening and closing of the liquid inlet valve and the air inlet valve, thereby controlling the communication or disconnection of the liquid inlet channel and the air inlet channel arranged on the side wall of the ammonia water tank, and uses the ammonia gas dissolved in water to prepare the ammonia water, and the liquid level meter arranged in the side wall of the ammonia water tank and the liquid concentration meter arranged in the ammonia water tank are in communication connection with the PLC, and signals are sent to the PLC to control the opening and closing of the liquid inlet valve and the air inlet valve, so that the automation of preparing the ammonia water is realized, and the harm to the workers caused by the volatilization of a large amount of ammonia gas during the manual preparation of the ammonia water is avoided, and the concentration of the prepared ammonia water is accurately controlled.

[0019] The touch screen arranged on the PLC can intuitively display the data transmitted by the liquid level meter and the liquid concentration meter, and the workers can manually control the opening and closing of the liquid inlet valve and the air inlet valve through the touch screen, so that the flexibility of preparing the ammonia water is improved, and the cooling pipe spirally arranged in the ammonia water tank is used to cool the ammonia water with the temperature increased due to the heat release during the fusion of the ammonia gas and the water, so that the efficiency of dissolving the ammonia gas in water is improved, and the concentration of the ammonia water is also improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 is a schematic diagram of the overall combined three-dimensional structure provided by the embodiments of the present application;

[0022] Figure 2 is Figure 1 a front view structural schematic diagram;

[0023] Figure 3 is a schematic diagram of the three-dimensional cross-sectional structure provided by the embodiments of the present application;

[0024] Figure 4 is Figure 3 a schematic diagram of the structure of the telescopic tube in the extended state;

[0025] Figure 5 is a schematic diagram of the three-dimensional structure of the ammonia tank provided by the embodiments of the present application;

[0026] Figure 6 is Figure 5 a front view structural schematic diagram;

[0027] Figure 7 is Figure 6 a cross-sectional structural schematic diagram;

[0028] In the drawings: 1-ammonia tank, 1.1-liquid inlet channel, 1.11-liquid inlet pipe, 1.12-liquid inlet valve, 1.2-gas inlet channel, 1.21-gas inlet pipe, 1.22-gas inlet valve, 1.23-telescopic pipe, 1.24-nozzle, 1.3-liquid outlet channel, 1.31-liquid outlet pipe, 1.32-liquid outlet valve, 1.4-stirring part, 2-liquid level meter, 3-PLC, 3.1-touch screen, 4-liquid concentration meter, 4.1-measuring head, 4.2-display module, 5-cooling pipe, 5.1-water inlet, 5.2-water outlet. DETAILED DESCRIPTION

[0029] The above solutions will be further described below in combination with specific examples. It should be understood that these examples are used to illustrate the present application rather than limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not mentioned are usually the conditions in conventional experiments.

[0030] In one embodiment, an automatic water-ammonia configuration device is provided, comprising an ammonia tank 1 for preparing and storing ammonia water, a liquid level meter 2 for displaying the liquid level, and a PLC 3. The ammonia tank 1 is provided with a liquid inlet channel 1.1 and a gas inlet channel 1.2 on the side wall. The liquid inlet channel 1.1 comprises a liquid inlet pipe 1.11 and a liquid inlet valve 1.12 connected to the PLC 3. The gas inlet channel 1.2 comprises a gas inlet pipe 1.21 and a gas inlet valve 1.22 connected to the PLC 3. The gas inlet pipe 1.21 extends into the ammonia tank 1. A liquid outlet channel 1.3 is provided below the ammonia tank 1, comprising a liquid outlet pipe 1.31 and a liquid outlet valve 1.32. The PLC 3 can control the opening and closing of the liquid inlet valve 1.12 and the gas inlet valve 1.22. The liquid inlet channel 1.1 is used to inject water into the ammonia tank 1 for preparing ammonia water. The gas inlet channel 1.2 is used to inject ammonia gas into the ammonia tank 1, which is obtained by evaporating liquid ammonia. The prepared ammonia water can be discharged from the ammonia tank 1 through the liquid outlet pipe 1.31 of the liquid outlet channel 1.3, and the opening and closing of the liquid outlet valve 1.32 controls the start and stop of the discharge.

[0031] The liquid level meter 2 is installed on the outer wall of the ammonia tank 1 and communicates with the ammonia tank 1. The workers can determine the amount of water in the ammonia tank 1 by observing the liquid level meter 2. A liquid level sensor connected to the PLC 3 is installed in the liquid level meter 2. When the water injected into the ammonia tank 1 through the liquid inlet pipe 1.11 reaches the preset water level of the liquid level sensor in the liquid level meter 2, a signal is sent to the PLC 3, which closes the liquid inlet valve 1.12. Preferably, a flow guide pipe communicating with the ammonia tank 1 is installed near the upper and lower ends of the liquid level meter 2. The liquid level meter 2 is made of transparent material and has scale lines on its surface, which facilitates the workers to observe the liquid level in the ammonia tank 1. A liquid concentration meter 4 is also installed in the ammonia tank 1. The liquid concentration meter 4 is a common device for measuring the concentration of ammonia water on the market. The measuring head 4.1 of the liquid concentration meter 4 is placed inside the tank body of the ammonia tank 1, and the display module 4.2 of the liquid concentration meter 4 communicates with the PLC 3. During the preparation of ammonia water, the measuring head 4.1 is placed below the liquid level in the ammonia tank 1 to detect the concentration of ammonia water. When the concentration of the ammonia water prepared by injecting ammonia gas into water through the gas inlet pipe 1.21 reaches the preset value of the liquid concentration meter 4, a signal is sent to the PLC 3, which closes the gas inlet valve 1.22. The workers can manually control the opening and closing of the liquid inlet valve 1.12 or the gas inlet valve 1.22 by operating the PLC 3 during the preparation of ammonia water, or the PLC 3 can automatically control the liquid inlet valve 1.12 and the gas inlet valve 1.22 to complete the operation of configuring ammonia water.

[0032] To avoid water from rushing into the air inlet channel 1.2 when the air inlet channel 1.2 injects ammonia into the ammonia water tank 1. Therefore, in the case, the air inlet channel 1.2 is arranged above the liquid inlet channel 1.1, and the air inlet pipe 1.21 is bent downward. When the amount of water injected into the ammonia water tank 1 by the liquid inlet pipe 1.11 reaches the preset value, the liquid inlet valve 1.12 is closed, the air inlet channel 1.2 is above the water level in the ammonia water tank 1, and the end of the downwardly bent air inlet pipe 1.21 can extend below the water level. At this time, the end of the air inlet pipe 1.21 is perpendicular to the water surface and below the water surface, and ammonia is injected into the ammonia water tank 1 through the air inlet channel 1.2, and liquid will not rush into the air inlet channel 1.2. Preferably, a nozzle 1.24 with multiple gas injection holes facing different directions is connected to the end of the air inlet pipe 1.21. Because ammonia generates heat during dissolution in water, the liquid in the area where ammonia is injected from the end of the air inlet pipe 1.21 is higher in temperature than the liquid in other areas of the ammonia water tank 1. At this time, continuous injection of ammonia from the end of the air inlet pipe 1.21 can cause the gas bubbles to suddenly contract and explode, causing the ammonia water tank 1 to vibrate, and long-term vibration can damage the ammonia water tank 1. Therefore, the end of the air inlet pipe 1.21 is connected to the nozzle 1.24 with multiple gas injection holes facing different directions, which can inject ammonia into water from multiple directions, increase the contact area between ammonia and water, improve the efficiency of ammonia dissolving in water, and uniformly raise the water temperature in a large area, avoiding the situation of ammonia gas bubble explosion due to sudden cooling and causing the ammonia water tank to vibrate. Because ammonia generates heat when dissolving in water, and the efficiency of ammonia dissolving in water decreases when the temperature is high, which in turn affects the concentration of the prepared ammonia water. In the case, a telescopic pipe 1.23 controlled by a PLC 3 is also arranged at the end of the air inlet pipe 1.21, and the nozzle 1.24 is connected to the end of the telescopic pipe 1.23. A temperature sensor is also arranged in the telescopic pipe 1.23, and when the liquid temperature around the nozzle 1.24 is high, the PLC 3 sends a signal to the end of the telescopic pipe 1.23 to control the telescopic pipe 1.23 to expand and contract. In this embodiment, a rack is arranged on the telescopic pipe 1.23, a motor is arranged on the air inlet pipe 1.21, and a gear meshing with the rack is arranged on the output shaft of the motor. In addition, a nut can also be arranged on the telescopic pipe 1.23, a motor is arranged on the air inlet pipe 1.21, and a screw rod matched with the nut is arranged on the output shaft of the motor. The up and down movement of the telescopic pipe 1.23 is realized by rotating the motor, and the telescopic pipe 1.23 is driven by the motor to extend downward, so that the nozzle 1.24 sprays ammonia and water to be mixed near the lower end of the ammonia water tank 1, improving the efficiency of ammonia water preparation.

[0033] In the case, the stirring part 1.4 is arranged at the bottom of the ammonia water tank 1. Since the ammonia water releases heat when dissolving in water, when the nozzle 1.24 is arranged above the ammonia water tank 1, the ammonia gas sprayed by the nozzle 1.24 can only increase the temperature of the liquid in the surrounding area. Even if the telescopic pipe 1.23 is arranged, the temperature of the liquid in the ammonia water tank 1 cannot be uniform, and the ammonia gas cannot be uniformly dissolved in water. Therefore, the stirring part 1.4 is arranged to stir the liquid in the ammonia water tank 1, so that the liquid with high temperature and the liquid with low temperature are uniformly mixed, so that the temperature of the liquid in the ammonia water tank 1 is uniform, and the ammonia gas is uniformly dissolved in water, thereby improving the concentration of the prepared ammonia water.

[0034] In the case, the touch screen 3.1 is arranged on the PLC 3, which can control the opening and closing of the liquid inlet valve 1.12 and the gas inlet valve 1.22. Since the worker needs to manually operate the liquid inlet valve 1.12 and the gas inlet valve 1.22, the touch screen 3.1 is arranged to facilitate the worker to control the liquid inlet valve 1.12 and the gas inlet valve 1.22, and the worker can also directly observe the data transmitted by the liquid level meter 2 and the liquid concentration meter 4 through the touch screen 3.1. Preferably, the lower end of the measuring head 4.1 of the liquid concentration meter 4 extends to a position below the liquid level meter 2. Since the amount of water needed to be injected into the ammonia water tank 1 needs to reach the area of the liquid level meter 2, the measuring head 4.1 of the liquid concentration meter 4 is extended downward to the position below the liquid level meter 2 to extend into the liquid. The display module 4.2 of the liquid concentration meter 4 is arranged outside the ammonia water tank 1 and is sealingly connected with the ammonia water tank 1, so as to avoid the ammonia gas leaking from the gap between the display module 4.2 and the ammonia water tank 1 and polluting the air. Moreover, the display module 4.2 is arranged outside the ammonia water tank 1, so that the worker can directly observe the concentration of the ammonia water in the ammonia water tank 1.

[0035] (As shown in Figure 3 In order to improve the efficiency of dissolving ammonia gas in water and improve the concentration of prepared ammonia water, the cooling pipe 5 is arranged in the ammonia water tank 1. The cooling pipe 5 is spirally arranged on the inner wall of the ammonia water tank 1, and the water inlet 5.1 and the water outlet 5.2 of the cooling pipe 5 extend to the outside of the ammonia water tank 1. The cooling liquid is injected into the cooling pipe 5 through the water inlet 5.1, and then discharged from the water outlet 5.2. The ammonia gas releases heat when dissolving in water, and the liquid in the ammonia water tank 1 is stirred under the action of the stirring part 1.4, so that the temperature of the liquid in the ammonia water tank 1 is uniform. At this time, the liquid contacts the cooling pipe 5 to be cooled. The stirring part 1.4 can also make the liquid fully contact the cooling pipe 5 to be cooled when stirring. Preferably, a large gap is arranged between the pipe bodies of the spirally arranged cooling pipe 5. Increasing the gap between the pipe bodies can make the liquid fully contact the cooling pipe 5, thereby improving the cooling efficiency of the ammonia water in the ammonia water tank 1.

[0036] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A condensed water ammonia automatic configuration device, characterized in that, The application relates to an ammonia water tank, which comprises an ammonia water tank (1), a liquid level meter (2) and a PLC (3), wherein a liquid inlet channel (1.1) and an air inlet channel (1.2) are arranged on the side wall of the ammonia water tank (1), the liquid inlet channel (1.1) comprises a liquid inlet pipe (1.11) and a liquid inlet valve (1.12) in communication connection with the PLC (3), the air inlet channel (1.2) comprises an air inlet pipe (1.21) and an air inlet valve (1.22) in communication connection with the PLC (3), the air inlet pipe (1.21) extends into the ammonia water tank (1), a liquid outlet channel (1.3) is arranged below the ammonia water tank (1) and comprises a liquid outlet pipe (1.31) and a liquid outlet valve (1.32). The liquid level meter (2) is arranged on the outer side wall of the ammonia water tank (1) and is in communication with the ammonia water tank (1), a liquid level sensor in communication connection with the PLC (3) is arranged in the liquid level meter (2), a liquid concentration meter (4) is further arranged in the ammonia water tank (1) and comprises a measuring head (4.1) and a display module (4.2), the measuring head (4.1) is arranged in the tank body of the ammonia water tank (1), and the display module (4.2) is in communication connection with the PLC (3). A nozzle (1.24) provided with a plurality of air injection holes in different directions is arranged at the end of the air inlet pipe (1.21). A telescopic pipe (1.23) controlled by the PLC (3) is arranged at the end of the air inlet pipe (1.21), and the nozzle (1.24) is arranged at the end of the telescopic pipe (1.23). A temperature sensor is arranged in the telescopic pipe (1.23), when the liquid temperature of the surrounding area of the nozzle (1.24) is high, the PLC (3) sends a signal to the end of the telescopic pipe (1.23) to control the telescopic pipe (1.23) to stretch or retract. A rack is arranged on the telescopic pipe (1.23), a motor is arranged on the air inlet pipe (1.21), and a gear wheel meshing with the rack is arranged on the output shaft of the motor. A nut is arranged on the telescopic pipe (1.23), a motor is arranged on the air inlet pipe (1.21), and a screw rod matched with the nut is arranged on the output shaft of the motor. The up-and-down movement of the telescopic pipe (1.23) is realized by rotating the motor, and the telescopic pipe (1.23) is driven by the motor to stretch and move downward, so that the nozzle (1.24) sprays ammonia gas to fuse with water at a position close to the lower end of the ammonia water tank (1).

2. The automatic condensate ammonia water configuration device of claim 1, wherein The air inlet channel (1.2) is arranged above the liquid inlet channel (1.1), and the air inlet pipe (1.21) is bent downward.

3. The automatic condensate ammonia water configuration device of claim 1, wherein A stirring part (1.4) is arranged on the inner bottom of the ammonia water tank (1).

4. The automatic condensate ammonia water configuration device of claim 1, wherein A flow guide pipe in communication with the ammonia water tank (1) is arranged at positions close to the upper end and the lower end of the liquid level meter (2), the liquid level meter (2) is made of transparent material, and a scale line is arranged on the surface of the liquid level meter (2).

5. The automatic condensate ammonia water configuration device of claim 1, wherein A touch screen (3.1) is arranged on the PLC (3) and can control the opening or closing of the liquid inlet valve (1.12) and the air inlet valve (1.22).

6. The automatic condensate ammonia water configuration device of claim 1, wherein The lower end of the measuring head (4.1) of the liquid concentration meter (4) extends to a position below the liquid level meter (2), and the display module (4.2) is arranged outside the ammonia tank (1) and is sealingly connected with the ammonia tank (1).

7. The automatic condensate ammonia water configuration device of claim 1, wherein A cooling pipe (5) is further included, which is spirally arranged on the inner wall of the ammonia tank (1), and the water inlet (5.1) and the water outlet (5.2) of the cooling pipe (5) extend outside the ammonia tank (1).

8. The automatic condensate ammonia water configuration device of claim 7, wherein A large gap is arranged between the pipe bodies of the spirally arranged cooling pipe (5).

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