A sample water recovery device for chemical instruments in power plants

Abstract

This utility model discloses a sample water recovery device for chemical instruments in power plants, relating to the field of sample water recovery technology. It includes a heat exchange tank with a front cover fitted to its front end and a rear cover fitted to its rear end. A cooling component is installed within a sealed cavity formed by the heat exchange tank, the front cover, and the rear cover. The cooling component penetrates the middle of the front end of the front cover and connects to a sample outlet. The other end of the sample outlet connects to a control component, and a recovery component is located below the other end of the control component. This utility model, through the cooperation of the cooling and control components, facilitates the rapid reduction of high-temperature sample water and controls the temperature, pressure, and flow rate of the sample water as it flows into the instrument chamber, ensuring stable instrument operation, improving practicality, and achieving instrument protection. Furthermore, the recovery component allows the sample water to be stored in the device during testing, awaiting recovery or discharge, further improving practicality and achieving water conservation. Ultimately, it solves the problem of low sample water cooling efficiency in existing equipment affecting testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sample water recovery technology, and in particular to a sample water recovery device for chemical instruments in power plants. Background Technology

[0002] The sample water recovery device for power plant chemical instruments is a device used to recover sampled water from the water-steam system of a power plant, aiming to reduce water waste and improve the recycling rate of water resources. Currently, most power plants generate a huge amount of wastewater during power generation, and water source costs are one of the major costs for power plants. To reduce water source costs and conserve water resources, power plants test the composition of wastewater and determine whether it meets recycling standards. Some of the sampled wastewater also needs to be recovered, thus requiring a sample water recovery device. Existing recovery devices typically consist of a cooling structure, a control sampling structure, and a recovery structure. The cooling structure is mainly responsible for cooling the high-temperature sample water to a certain temperature before it enters the control sampling structure, ensuring that the control equipment and testing instruments are not damaged by high temperatures. Therefore, the cooling rate of the cooling structure directly determines the detection efficiency of the device. Existing cooling structures use linear heat exchange tubes arranged in a ring, which has an insufficient heat exchange area with the cooling water, and the cooling rate needs to be improved. Therefore, this invention improves upon existing equipment to address these problems. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sample water recovery device for chemical instruments in power plants.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sample water recovery device for chemical instruments in power plants, comprising a heat exchange tank, the heat exchange tank being a hollow tube structure, a front cover fitted to the front end face of the heat exchange tank, and a rear cover fitted to the rear end face of the heat exchange tank, both the front and rear covers being hemispherical structures, a cooling component being provided within the sealed cavity formed by the heat exchange tank, the front cover, and the rear cover, the cooling component penetrating through the middle of the front end face of the front cover and connected to a sample outlet, the other end of the sample outlet being connected to a control component, the other end of the control component being connected to a recovery pipe, the recovery pipe being erected above a water storage tank, and a recovery component being provided on the water storage tank.

[0005] Preferably, the cooling assembly includes a sample inlet connected to the upper part of the outer side of the front cover, a water outlet is provided behind the sample inlet, and a water inlet is provided at a position symmetrical to the heat exchange tank about the water outlet. Both the water outlet and the water inlet are connected to the upper part of the outer side of the heat exchange tank.

[0006] Preferably, baffles are fixedly installed on both the front and rear ends of the heat exchange tank, spiral cooling pipes are uniformly connected to the periphery between the baffles, and return sample pipes are uniformly connected to the inner ring between the baffles. The front end of the return sample pipe is connected to the sample outlet, and the sample outlet passes through the front cover and is connected to the control component.

[0007] Preferably, the control component includes an electric valve, one end of which is connected to a sample outlet and the other end to a pressure gauge. A temperature sensor is connected to one side of the outer surface of the electric valve. The other end of the pressure gauge is connected to a flow regulating valve. The other end of the flow regulating valve is connected to a flow meter. The other end of the flow meter is connected to a sampling valve. A sampling bottle is connected above the sampling valve. The other end of the sampling valve is connected to a recovery pipe. A recovery component is provided below the recovery pipe.

[0008] Preferably, the recycling component includes a water storage tank, an installation plate is horizontally installed on the front end of the top of the water storage tank, a water pump is installed on one side of the installation plate, one end of the water pump is connected to the water storage tank, and the other end of the water pump is connected to a water pump.

[0009] Preferably, a liquid level rod is vertically slidably connected to the center of the top surface of the mounting plate, a limit plate is fixedly installed at the top of the liquid level rod, a float is fixedly connected to the lower end of the liquid level rod, an opening pressure sensor is installed near the liquid level rod on the bottom surface of the mounting plate, and a closing pressure sensor is installed at the symmetrical positions above and below the opening pressure sensor.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of cooling components and control components, facilitates the rapid reduction of high-temperature sample water and controls the temperature, pressure, and flow rate of sample water when it flows into the instrument chamber, ensuring stable instrument operation, improving practicality, and realizing the ability to protect the instrument; furthermore, through the recovery component, the sample water is stored in the device during the detection period for recovery or discharge treatment, improving practicality and realizing the ability to save water resources through sample water recovery; finally, it solves the problem of low sample water cooling efficiency affecting detection efficiency in existing equipment. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the device proposed in this utility model;

[0013] Figure 2 This is a cross-sectional view of the cooling component structure proposed in this utility model;

[0014] Figure 3 This is a three-dimensional schematic diagram of the control component structure proposed in this utility model;

[0015] Figure 4 This is a three-dimensional schematic diagram of the recycling component structure proposed in this utility model;

[0016] Figure 5 This is a cross-sectional schematic diagram of the recycling component structure proposed in this utility model.

[0017] The following are the components listed in the diagram: 1. Heat exchanger; 2. Front cover; 3. Rear cover; 4. Sample inlet; 5. Water inlet; 6. Water outlet; 7. Baffle; 8. Spiral cooling pipe; 9. Sample return pipe; 10. Sample outlet; 11. Electric valve; 12. Temperature sensor; 13. Pressure gauge; 14. Flow regulating valve; 15. Flow meter; 16. Sampling valve; 17. Recovery pipe; 18. Water storage tank; 19. Mounting plate; 20. Pumping pipe; 21. Liquid level rod; 22. Limiting plate; 23. Float; 24. Open pressure sensor; 25. Close pressure sensor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-5This utility model discloses a sample water recovery device for chemical instruments in a power plant, comprising a heat exchange tank 1, which is a hollow tube structure. A front cover 2 is fitted to the front end of the heat exchange tank 1, and a rear cover 3 is fitted to the rear end. Both the front cover 2 and the rear cover 3 are hemispherical structures. A cooling component is installed within the sealed cavity formed by the heat exchange tank 1, the front cover 2, and the rear cover 3. The cooling component penetrates the middle of the front end of the front cover 2 and connects to a sample outlet 10. The other end of the sample outlet 10 connects to a control component, and the other end of the control component connects to a recovery pipe 17. The recovery pipe 17 is mounted above a water storage tank 18, and the recovery component is mounted on the water storage tank 18. The modular design facilitates free combination or addition of functional components, improving practicality. The control component includes an electric valve 11, one end of which connects to the sample outlet 10, and the other end connects to a pressure gauge 13. A temperature sensor 12 is connected to one side of the outer surface of the electric valve 11, and the other end of the pressure gauge 13 connects to a flow regulating valve 14. 4. The other end is connected to the flow meter 15, and the other end of the flow meter 15 is connected to the sampling valve 16. A sampling bottle is connected above the sampling valve 16, and the other end of the sampling valve 16 is connected to the recovery pipe 17. A recovery component is provided below the recovery pipe 17. The sample water parameters are reasonably and accurately controlled by the control component, which improves the practicality. The recovery component includes a water storage tank 18. An installation plate 19 is horizontally installed on the front end of the top of the water storage tank 18. A water pumping pipe 20 is installed on one side of the installation plate 19. One end of the water pumping pipe 20 is connected to the water storage tank 18, and the other end of the water pumping pipe 20 is connected to the water pump. A liquid level rod 21 is vertically slidably connected to the middle of the top surface of the installation plate 19. A limit plate 22 is fixedly installed at the top of the liquid level rod 21, and a float ball 23 is fixedly connected to the lower end of the liquid level rod 21. An open pressure sensor 24 is installed near the liquid level rod 21 on the bottom surface of the installation plate 19. A close pressure sensor 25 is installed at the symmetrical positions above and below the open pressure sensor 24. The water sample is stored in the recovery component and processed after waiting for the test results, which improves the practicality.

[0020] In this utility model, to solve the problem of low sample water cooling efficiency affecting detection efficiency in existing equipment, the following technical solution is adopted: The cooling component includes a sample inlet 4, which is connected to the upper outer side of the front cover 2. An outlet 6 is provided behind the sample inlet 4. An inlet 5 is provided at a symmetrical position about the heat exchange tank 1. Both the outlet 6 and the inlet 5 are connected to the upper outer side of the heat exchange tank 1. Baffles 7 are installed and fixed on the front and rear end faces of the heat exchange tank 1. Spiral cooling pipes 8 are uniformly connected to the outer periphery between the baffles 7. A return sample pipe 9 is uniformly connected to the inner ring between the baffles 7. The front end of the return sample pipe 9 is connected to the sample outlet 10. The sample outlet 10 passes through the front cover 2 and is connected to the control component. Through the cooperation of the spiral cooling pipes 8 and the return sample pipes 9, the heat exchange area can be increased by utilizing the spiral structure and the cooling can be alternately applied, thereby increasing the sample water cooling rate and improving the heat transfer efficiency of the cooling water, thus improving practicality.

[0021] Working Principle: In the use of this utility model, power is first supplied to all electrical equipment. Then, high-temperature sample water is introduced into the device through the sample inlet 4. The high-temperature sample water first enters the front cover 2, then the spiral cooling pipe 8, then the rear cover 3, and finally the return sample pipe 9, and enters the next structure through the sample outlet 10. During this process, cooling water is introduced into the heat exchange tank 1 through the water inlet 5. At this time, the cooling water on the outer periphery of the heat exchange tank 1 first exchanges heat with the sample water in the spiral cooling pipe 8, and then the cooling water in the middle exchanges heat with the sample water in the return sample pipe 9. The cooling water temperatures in the spiral cooling pipe 8 and the return sample pipe 9 are different because the cooling water in the return sample pipe 9 has already undergone one cooling process. Therefore, the temperature of the outer cooling water is higher than that of the middle cooling water. The temperature difference causes the outer cooling water to conduct heat to the middle cooling water while dissipating heat to the outside air, so that the overall heat exchange capacity of the cooling water is utilized more effectively, and the high water temperature near the primary cooling pipe is avoided. The stratification of water near the secondary cooling pipe, where the water temperature is low, greatly improves cooling efficiency. After the sample water is cooled, it passes through electric valve 11 and temperature sensor 12. Temperature sensor 12 will detect the sample water temperature in real time and activate electric valve 11 to close the flow channel when the temperature is high, ensuring that the instrument is not damaged. Then the sample water will enter pressure gauge 13, flow regulating valve 14 and flow meter 15, thereby regulating the outflow of sample water and pipeline pressure. Finally, it will flow into sampling valve 16 and divert a portion of the sample water into sampling bottle for manual testing. The remaining portion will be automatically detected by the instrument room and finally flow into water storage tank 18 from recovery pipe 17. During the storage of sample water in water storage tank 18, the water level continues to rise until the float 23 squeezes and opens pressure sensor 24, causing the water pump to start and draw sample water through water pumping pipe 20 until the float 23 drops to the bottom. At this time, limit plate 22 squeezes and closes pressure sensor 25, causing the water pump to shut down, and then water storage continues.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sample water recovery device for chemical instruments of power plants, comprising a heat exchange tank (1), characterized in that: The heat exchange tank (1) is a hollow tube structure. A front cover (2) is installed on the front end face of the heat exchange tank (1), and a rear cover (3) is installed on the rear end face of the heat exchange tank (1). Both the front cover (2) and the rear cover (3) are hemispherical structures. A cooling component is provided in the sealed cavity formed by the heat exchange tank (1), the front cover (2) and the rear cover (3). The cooling component penetrates the middle of the front end face of the front cover (2) and is connected to the sample outlet (10). The other end of the sample outlet (10) is connected to the control component. The other end of the control component is connected to the recovery pipe (17). The recovery pipe (17) is mounted above the water storage tank (18). The water storage tank (18) is equipped with a recovery component.

2. A sample water recovery device for chemical instruments of power plants according to claim 1, characterized in that: The cooling assembly includes an inlet (4), which is connected to the upper part of the outer side of the front cover (2). An outlet (6) is provided behind the inlet (4). An inlet (5) is provided at the symmetrical position of the outlet (6) with respect to the heat exchange tank (1). Both the outlet (6) and the inlet (5) are connected to the upper part of the outer side of the heat exchange tank (1).

3. A sample water recovery device for chemical instruments of power plants according to claim 2, characterized in that: The heat exchange tank (1) is equipped with baffles (7) on both the front and rear ends. Spiral cooling pipes (8) are uniformly connected between the baffles (7) on the outer periphery. Sample return pipes (9) are uniformly connected between the inner rings of the baffles (7). The front end of the sample return pipe (9) is connected to the sample outlet (10). The sample outlet (10) passes through the front cover (2) and is connected to the control component.

4. A sample water recovery device for chemical instruments in a power plant according to claim 1, characterized in that: The control component includes an electric valve (11), one end of which is connected to a sample outlet (10) and the other end to a pressure gauge (13). A temperature sensor (12) is connected to one side of the outer surface of the electric valve (11). The other end of the pressure gauge (13) is connected to a flow regulating valve (14). The other end of the flow regulating valve (14) is connected to a flow meter (15). The other end of the flow meter (15) is connected to a sampling valve (16). A sampling bottle is connected above the sampling valve (16). The other end of the sampling valve (16) is connected to a recovery pipe (17). A recovery component is provided below the recovery pipe (17).

5. A sample water recovery device for chemical instruments of power plants according to claim 1 characterized in that: The recycling component includes a water storage tank (18), with an installation plate (19) horizontally installed on the front end of the top of the water storage tank (18). A water pumping pipe (20) is installed on one side of the installation plate (19), with one end of the water pumping pipe (20) connected to the water storage tank (18) and the other end of the water pumping pipe (20) connected to a water pump.

6. A sample water recovery device for a chemical instrument of a power plant according to claim 5, characterized in that: A liquid level rod (21) is vertically slidably connected to the middle of the top surface of the mounting plate (19). A limit plate (22) is fixedly installed at the top of the liquid level rod (21). A float (23) is fixedly connected to the lower end of the liquid level rod (21). An opening pressure sensor (24) is installed near the liquid level rod (21) on the bottom surface of the mounting plate (19). A closing pressure sensor (25) is installed at the symmetrical positions above and below the opening pressure sensor (24).

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