Conductivity controller for treating radioactive uranium-containing wastewater

Abstract

The present invention discloses a conductivity controller for treating radioactive uranium-containing wastewater, comprising a chassis, a conductivity electrode and a tank for a solution to be tested arranged in the chassis, characterized in that: it also comprises a cleaning mechanism connected to the lower part of the tank for the solution to be tested, one end of the conductivity electrode is inserted into the tank for the solution to be tested, and the bottom end is immersed in the solution to be tested; corresponding liquid inlet holes are provided at the top of the chassis and the tank for the solution to be tested, and liquid drainage pipes are provided at the bottom of both. The present invention cleans the conductivity electrode and the tank for the solution to be tested multiple times by providing a cleaning device, which can be convenient for the next use; and when cleaning the tank for the solution to be tested and the conductivity electrode in the conductivity controller, it is not necessary to disassemble the conductivity controller, therefore, not only the time for disassembling the conductivity controller is saved, but also the sealing of the conductivity controller is ensured, and it has strong practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of instrument protection, and in particular relates to a conductivity controller for treating radioactive uranium-containing wastewater. Background Art

[0002] As we all know, most military, civilian, and scientific research nuclear facilities will produce radioactive wastewater when carrying out nuclear activities. Since wastewater is fluid, there are many risks. It is easy to leak or seep when stored, which may cause pollution to the soil and water in the environment. In addition, radioactive nuclides can enter the human body through various ways such as inhalation and ingestion, posing a potential threat to the environment and the public. Once a nuclear accident occurs, it will cause mental and psychological anxiety and even panic among the public, which is not conducive to social stability and even affects the development of the industry. Due to its liquid physical properties, radioactive wastewater has received extensive attention from regulatory authorities for its safety during temporary storage and treatment. Therefore, the proper management and treatment of radioactive wastewater is particularly important, and corresponding technical means are needed to transform radioactive wastewater into a safe physical and chemical state.

[0003] Radioactive wastewater is treated by distillation for single uranium-containing wastewater, which is converted into distilled water and high-concentration water after treatment. The distilled water is collected and reused; the high-concentration water is dried and converted into solid salt. Therefore, the uranium-containing wastewater is finally converted into harmless distilled water and relatively stable solid salt, which greatly improves storage safety.

[0004] In current technology, the conductivity of the solution to be tested is generally detected by immersing the conductivity electrode in the solution to be tested. Therefore, the electrode needs to be cleaned every time the test is performed to ensure the cleanliness of the electrode. However, fixed conductivity meters generally need to be disassembled regularly to clean the electrodes, and the operation process is complicated. In addition, frequent disassembly and assembly can easily damage the sealing of the instrument installation location.

[0005] Based on this, how to design a conductivity controller that does not require disassembly and is easy to clean is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0006] The present invention is proposed to overcome the shortcomings of the prior art and aims to provide a conductivity controller for treating radioactive uranium-containing wastewater.

[0007] The present invention is achieved through the following technical solutions:

[0008] A conductivity controller for treating radioactive uranium-containing wastewater, comprising a chassis, a conductivity electrode and a test solution tank arranged in the chassis, and also comprising a cleaning mechanism connected to the lower part of the test solution tank, wherein one end of the conductivity electrode is inserted into the test solution tank, and the bottom end is immersed in the test solution; corresponding liquid inlet through holes are provided on the tops of the chassis and the test solution tank, and drainage pipes are provided at the bottoms of both;

[0009] The cleaning mechanism comprises a distilled water tank and a detergent tank which are connected to the test solution tank through pipelines Ⅰ and Ⅱ respectively. A water pump Ⅰ and a solenoid valve Ⅰ are arranged on pipeline Ⅰ; a water pump Ⅱ and a solenoid valve Ⅱ are arranged on pipeline Ⅱ.

[0010] In the above technical solution, a No. III solenoid valve is provided in the liquid discharge pipe; a piston is provided in the liquid inlet through hole, and the piston is interference-connected with the liquid inlet through hole; one end of the liquid discharge pipe is connected to the solution tank to be tested, and the other end is connected to the receiving tank.

[0011] In the above technical solution, auxiliary handles are provided on both sides of the chassis, and a plurality of machine feet are provided on the bottom.

[0012] In the above technical solution, check valves are arranged at the ends of pipelines I and II extending into the test solution tank; and a pressure regulating valve is arranged at the end of pipeline II close to the test solution tank.

[0013] The above technical solution also includes a stirring mechanism, which includes a motor arranged at the bottom of the chassis, whose output shaft is connected to the rotating shaft, the rotating shaft extends into the test solution tank, and a stirring fan blade is arranged at the free end.

[0014] The above technical solution also includes a controller and a power supply device fixedly mounted on the inner wall of the chassis and electrically connected; the controller is electrically connected to water pumps No. Ⅰ and No. Ⅱ, solenoid valves No. Ⅰ to No. Ⅲ, the pressure regulating valve and the motor respectively.

[0015] In the above technical solution, the controller is provided with a timer.

[0016] In the above technical solution, the outer wall of the chassis is provided with a conductivity electrode interface and a pH electrode interface.

[0017] In the above technical solution, an emergency stop button is provided on the top of the chassis.

[0018] In the above technical solution, a conductivity meter is arranged on the outer wall of the chassis.

[0019] The beneficial effects of the present invention are:

[0020] The invention provides a conductivity controller for treating radioactive uranium-containing wastewater, which solves the problem of inconvenient cleaning of the conductivity controller and ensures the sealing performance of the conductivity controller.

[0021] The present invention provides a cleaning device to clean the conductivity electrode and the solution tank to be tested for multiple times, which can be convenient for next use; and when the solution tank to be tested and the conductivity electrode in the conductivity controller are cleaned, the conductivity controller does not need to be disassembled, so not only the time for disassembling the conductivity controller is saved, but also the sealing of the conductivity controller is guaranteed, and the conductivity controller has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the conductivity controller for treating radioactive uranium-containing wastewater according to the present invention;

[0023] Figure 2 It is a rear view of the conductivity controller for treating radioactive uranium-containing wastewater of the present invention;

[0024] Figure 3 It is a front view of the conductivity controller for treating radioactive uranium-containing wastewater according to the present invention.

[0025] in:

[0026] 1 Chassis

[0027] 11 Auxiliary handle 12 Machine foot

[0028] 13 Conductivity electrode interface 14 pH electrode interface

[0029] 15 Emergency stop button 16 Conductivity meter

[0030] 2 Conductivity electrode

[0031] 3 Test solution tank

[0032] 4 Cleaning device

[0033] 41 Distilled water tank 42 Detergent tank

[0034] 43 No. Ⅰ water pump 44 No. Ⅰ solenoid valve

[0035] 45 No. Ⅰ pipeline 46 No. Ⅱ pipeline

[0036] 47 No. Ⅱ water pump 48 No. Ⅱ solenoid valve

[0037] 49 Pressure regulating valve

[0038] 5 Discharge pipe 6 Piston

[0039] 7 Receiver slot

[0040] 8. Stirring mechanism

[0041] 81 Motor 82 Shaft

[0042] 83 stirring blade

[0043] 9 Controller 10 Power supply device.

[0044] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the conductivity controller for treating radioactive uranium-containing wastewater of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0046] like Figures 1 to 3 As shown, a conductivity controller for treating radioactive uranium-containing wastewater comprises a chassis 1, a conductivity electrode 2, a test solution tank 3 arranged inside the chassis 1, and a cleaning mechanism 4;

[0047] The chassis 1 and the top of the solution tank 3 to be tested are provided with liquid inlet holes at corresponding positions, so that the solution to be tested can be poured into the solution tank 3 to be tested through the liquid inlet holes; and the bottom of the chassis 1 and the solution tank 3 to be tested is provided with a drainage pipe 5 for discharging the liquid in the solution tank 3 to be tested, and a valve is provided on the drainage pipe 5, and the valve is a No. III solenoid valve;

[0048] The conductivity electrode 2 passes through the chassis 1 and the top of the solution tank 3 to form a conductivity electrode jack and is inserted into the solution tank 3, and its bottom is immersed in the solution to be tested to measure the conductivity of the solution to be tested; a sealing structure is set between the conductivity electrode 2 and the conductivity electrode jack, and the sealing structure can be any structure that can achieve a sealing function, such as a sealing ring or a sealant;

[0049] The cleaning mechanism 4 is arranged on one side of the chassis 1, connected to the test solution tank 3, and cleans the test solution tank 3 after the test is completed. The cleaning mechanism includes a distilled water tank 41 and a detergent tank 42, which are connected to the test solution tank 3 through No. I and No. II pipelines 45 and 46, respectively. No. I water pump 43 and No. I solenoid valve 44 are arranged on No. I pipeline 45; No. II water pump 47 and No. II solenoid valve 48 are arranged on No. II pipeline 46. Through the cleaning mechanism 4, distilled water and detergent are transported to the test solution tank 3 through No. I and No. II pipelines 45 and 46, respectively, so as to clean the test solution tank 3.

[0050] In this embodiment, in order to prevent the mixed liquid of distilled water and detergent from flowing into the distilled water tank or the detergent tank, the ends of the No. Ⅰ and No. Ⅱ pipelines 45 and 46 extending into the test solution tank 3 are both provided with check valves, which ensure the cleanliness of the distilled water in the distilled water tank and the detergent in the detergent tank, and avoid interference from impurities.

[0051] In this embodiment, in order to quantitatively deliver the detergent in the detergent tank 42 to the test solution tank 3 , a pressure regulating valve 49 is provided at one end of the No. II pipeline 46 close to the test solution tank 3 .

[0052] In this embodiment, in order to ensure the sealing of the device, a piston 6 is arranged in the liquid inlet through hole, and the piston 6 is interference-connected with the liquid inlet through hole to ensure that the solution tank to be tested forms a closed space to prevent dust from falling in.

[0053] In this embodiment, one end of the liquid discharge pipe 5 is connected to the test solution tank 3, and the other end is connected to the receiving tank 7. The receiving tank 7 is used to receive the solution discharged from the test solution tank 3 to prevent the solution from polluting the environment.

[0054] In this embodiment, auxiliary handles 11 are provided on both sides of the chassis 1, and a plurality of machine feet 12 are provided at the bottom, and the auxiliary handles 11 are made of stainless steel. The provision of the auxiliary handles 11 facilitates the operator to move the conductivity controller through the auxiliary handles, providing convenience for the operator, and the use of stainless steel can prevent the auxiliary handles from rusting due to a humid environment, thereby causing damage to the auxiliary handles, which is not conducive to the operator moving the conductivity controller; the provision of the machine feet realizes the support of the conductivity controller.

[0055] In this embodiment, in order to enhance the cleaning strength, the conductivity controller for treating radioactive uranium-containing wastewater further includes a stirring mechanism 8 for stirring the liquid in the test solution tank 3. The stirring mechanism 8 includes a motor 81 arranged at the bottom of the chassis 1, whose output shaft is connected to a rotating shaft 82, and the rotating shaft 82 passes through the chassis 1 and the bottom of the test solution tank 3 and extends into the test solution tank 3, and a stirring fan blade 83 is arranged at the free end. By setting the stirring mechanism 4, the distilled water and the detergent in the test solution tank 3 are stirred to be fully mixed, which can enhance the cleaning strength, reduce the cleaning time to a certain extent, and improve the efficiency.

[0056] In this embodiment, in order to realize the automatic control of the device, the inner wall of the chassis 1 is also provided with a controller 9 and a power supply device 10 which are electrically connected to each other, and the power supply device 10 is used to provide working power for the controller 9. The controller 9 is electrically connected to the electromagnetic valves 44, 48, the pressure regulating valve 49 and the motor 81 respectively to realize the control of the corresponding components. The controller 9 is provided with a timer. Through the relevant settings of the controller 9 and the power supply device 10, the conductivity controller can be automatically controlled and operated normally, which is conducive to the subsequent cleaning of the solution tank to be tested. The model of the controller 9 is ZBIO-1E5AA.

[0057] In this embodiment, the outer wall of the case 1 is provided with a conductivity electrode interface 13 for connecting other conductivity electrodes and a pH electrode interface 14 for connecting pH electrodes, both of which can be provided on the rear side wall of the case 1 for easy operation. By providing the conductivity electrode interface 13 and the pH electrode interface 14, additional conductivity electrodes and pH electrodes can be connected respectively, so that the conductivity and pH value of other solutions can be measured.

[0058] In this embodiment, in order to deal with emergencies, an emergency stop button 15 is provided on the top of the chassis 1. When an emergency occurs, the operator can press the emergency stop button 15 to stop the conductivity controller from working, thereby avoiding accidents and extending the service life of the conductivity controller. The emergency stop button 15 is electrically connected to the controller 9, and all water pumps stop working when the emergency stop button is pressed.

[0059] In this embodiment, in order to facilitate the operator to read the data in real time, the outer wall of the chassis 1 is provided with a conductivity meter 16 for displaying the conductivity value of the solution to be tested, thus providing convenience for the operator to record the data.

[0060] Working principle and working process of the present invention:

[0061] Open the piston to expose the liquid inlet hole, so that the solution to be tested can be poured into the test solution tank. After pouring the test solution, cover the piston, the power supply device supplies power to the controller, and the conductivity electrode is inserted into the test solution tank through the conductivity electrode jack and immersed in the test solution to detect the conductivity of the test solution, and the conductivity is displayed by the conductivity meter.

[0062] After measuring the conductivity of the solution to be tested, all the solution to be tested is output to the receiving tank through the drainage pipe. At this time, the controller controls the start of water pumps No. Ⅰ and No. Ⅱ respectively, and controls the opening of solenoid valves No. Ⅰ and No. Ⅱ and the pressure regulating valve. At this time, the timer in the controller starts timing and the timing time can be set to 5 seconds, so that the distilled water in the distilled water tank is transported to the solution tank to be tested through pipeline No. Ⅰ, and the detergent in the detergent tank is transported to the solution tank to be tested through pipeline No. Ⅱ. After the timing ends, the controller controls water pump No. Ⅱ to stop running, and the controller controls solenoid valve No. Ⅱ and the pressure regulating valve to close, that is, the detergent in the detergent tank stops being transported to the solution tank to be tested. At this time, the controller controls the motor to start, and the motor drives the shaft to rotate, thereby driving the stirring blades to rotate, stirring the distilled water and detergent to form a mixed liquid, and flushing the solution tank to be tested. Among them, the solution tank to be tested can be cleaned multiple times;

[0063] It should be noted that a control panel is also provided on the surface of the conductivity controller, and the user can set the target conductivity on the control panel. When the conductivity of the solution in the test solution tank detected in real time by the conductivity electrode is greater than or equal to the target conductivity, it indicates that the test solution tank has been rinsed clean;

[0064] After the cleaning is completed, the controller controls the No. III solenoid valve to open, so that the solution in the solution tank to be tested is output to the receiving tank through the drainage pipe.

[0065] In addition, a conductivity electrode interface and a PH electrode interface are provided on the back of the chassis 1. Therefore, through the conductivity electrode interface and the PH electrode interface, the external conductivity electrode and the PH electrode in the pipeline can be connected respectively, so that the conductivity and PH value of the solution in the pipeline can be measured.

[0066] In this way, when cleaning the test solution tank in the conductivity controller, there is no need to disassemble the conductivity controller, thus not only saving the time of disassembling the conductivity controller, but also ensuring the sealing of the conductivity controller, which has strong practicality;

[0067] In addition, since the test solution tank is not open but sealed by a piston, the test solution can avoid affecting the controller and power supply device in the chassis 1, further protecting the controller and power supply device and preventing the controller and power supply device from being corroded.

[0068] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0070] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0071] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A conductivity controller for treating radioactive uranium-containing wastewater, comprising a chassis (1), a conductivity electrode (2) and a test solution tank (3) arranged in the chassis (1), characterized in that: It also includes a cleaning mechanism (4) connected to the lower part of the test solution tank (3), one end of the conductivity electrode (2) is inserted into the test solution tank (3), and the bottom end is immersed in the test solution; the tops of the chassis (1) and the test solution tank (3) are provided with corresponding liquid inlet holes, and the bottoms of the two are provided with liquid discharge pipes (5); The cleaning mechanism comprises a distilled water tank (41) and a detergent tank (42) which are respectively connected to the test solution tank (3) through No. I and No. II pipelines (45, 46); No. I water pump (43) and No. I solenoid valve (44) are arranged on No. I pipeline (45); and No. II water pump (47) and No. II solenoid valve (48) are arranged on No. II pipeline (46); The drainage pipe (5) is provided with a No. III solenoid valve; one end of the drainage pipe (5) is connected to the test solution tank (3), and the other end is connected to the receiving tank (7); The ends of the No. Ⅰ and No. Ⅱ pipelines (45, 46) extending into the test solution tank (3) are both provided with check valves; and the end of the No. Ⅱ pipeline (46) close to the test solution tank (3) is provided with a pressure regulating valve (49).

2. The conductivity controller for treating radioactive uranium-containing wastewater according to claim 1, characterized in that: A piston (6) is arranged in the liquid inlet through hole, and the piston (6) is in interference connection with the liquid inlet through hole.

3. The conductivity controller for treating radioactive uranium-containing wastewater according to claim 1, characterized in that: Auxiliary handles (11) are arranged on both sides of the chassis (1), and a plurality of machine feet (12) are arranged on the bottom.

4. The conductivity controller for treating radioactive uranium-containing wastewater according to claim 1, characterized in that: The device also comprises a stirring mechanism (8), wherein the stirring mechanism (8) comprises a motor (81) arranged at the bottom of the housing (1), wherein the output shaft of the motor is connected to a rotating shaft (82), the rotating shaft (82) extends into the test solution tank (3), and a stirring fan blade (83) is arranged at the free end.

5. The conductivity controller for treating radioactive uranium-containing wastewater according to claim 1, characterized in that: It also includes a controller (9) and a power supply device (10) fixedly mounted on the inner wall of the case (1) and electrically connected; the controller (9) is electrically connected to water pumps No. 1 and No. 2 (43, 47), solenoid valves No. 1 to No. 3, a pressure regulating valve (49), and a motor (81), respectively.

6. The conductivity controller for treating radioactive uranium-containing wastewater according to claim 5, characterized in that: The controller (9) is provided with a timer.

7. The conductivity controller for treating radioactive uranium-containing wastewater according to claim 1, characterized in that: The outer wall of the chassis (1) is provided with a conductivity electrode interface (13) and a pH electrode interface (14).

8. The conductivity controller for treating radioactive uranium-containing wastewater according to claim 1, characterized in that: An emergency stop button (15) is provided on the top of the chassis (1).

Images