Sampling device suitable for water vapor quality detection of power station boiler

Abstract

The utility model relates to a sampling device suitable for water vapor quality detection of a power station boiler, which comprises a box body provided with moving wheels at the bottom, a sealed flow cell is arranged in the box body, a cooling assembly is arranged in the sealed flow cell, the sealed flow cell is connected with a sampling pipeline and a feeding pipeline, and the feeding pipeline is connected with the sampling pipeline. And the pipe head of the feeding pipeline is connected with a water pipe universal joint. The device has the function of collecting a water sample to be tested, can ensure the sealing performance of an instrument in the whole test process, can effectively connect various sampling pipe joints of different models on a boiler with a feeding pipeline of the device, and ensures that the temperature and the flow of the water sample to be tested meet the test requirements of the instrument in the test process of the instrument; therefore, the accuracy and effectiveness of field test results are ensured. In addition, the device meets the requirement for portable sampling in field inspection of the water vapor quality of the power station boiler, and the standardization and accuracy of the test are improved.

Description

Technical Field

[0001] This utility model relates to a sampling device suitable for detecting the quality of steam and water in power plant boilers. Background Technology

[0002] As special equipment, boilers are directly related to the safety of people's lives and property. Power plant boilers operate at high temperatures and pressures, with rated steam pressures typically ranging from 3.8 to 30 MPa. If the water quality is substandard, impurities in the water will concentrate during heating and evaporation, causing corrosion and scaling on the heating surfaces, reducing thermal efficiency. Simultaneously, it can easily lead to overheating of the heating surfaces, causing bulging and cracking, ultimately resulting in accidents. Excessive impurities in the boiler water can cause water carryover in the steam, leading to azeotropic effects, affecting steam quality and seriously impacting the safe operation of the boiler. The quality of boiler water has a significant impact on the safe operation of boiler equipment and energy conservation and emission reduction; therefore, boiler water and steam quality testing is a crucial part of water quality monitoring during boiler operation.

[0003] Currently, many operating power plant boilers in our province, especially self-owned power plant boilers, face harsh on-site testing and sampling environments for water and steam quality inspection due to factors such as their age or poor maintenance by management personnel. During routine testing, only flexible sleeves are used for sampling and testing. In actual testing, the complex testing site faces many interfering factors such as excessively high water sample temperature, inconsistent sampling pipe diameter, and insufficient water flow, which have a significant impact on the accuracy of on-site testing results, work efficiency, and the safety of testing personnel.

[0004] To address the above technical issues, this paper proposes a sampling device suitable for detecting the quality of steam and water in power plant boilers. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a sampling device suitable for detecting the quality of water and steam in power plant boilers.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a sampling device suitable for water and steam quality detection in power plant boilers, including a box with wheels at the bottom, a sealed flow pool inside the box, a cooling component inside the sealed flow pool, and a sampling pipe and a feed pipe connected to the sealed flow pool, with a universal water pipe connector connected to the end of the feed pipe.

[0007] Preferably, the sealed flow pool is an inner liner with a sealed top cover fixedly connected to the top.

[0008] Preferably, the cooling assembly includes a coolant circulation pipe that spirals from top to bottom inside the inner liner, with both ends extending outside the inner liner and connected to a miniature refrigeration compressor.

[0009] Preferably, the refrigeration compressor is fixedly connected to the bottom of the box body outside the inner liner.

[0010] Preferably, the sampling pipeline is connected to the bottom of the inner liner and its sampling port extends to the outside of the box. A sampling pump and a throttle valve are sequentially arranged on the sampling pipeline along the liquid flow direction.

[0011] Preferably, the feed pipe is connected to the top of the inner liner, and a feed switch valve is provided on the feed pipe.

[0012] Preferably, the top of the inner liner is connected to an exhaust port, and an exhaust switch valve is installed on the exhaust port.

[0013] Preferably, the top of the inner liner is also connected to a cleaning pipe, the other end of which extends to the outside of the box for use with an external cleaning water source, and a cleaning switch valve is provided on the cleaning pipe.

[0014] Preferably, the casters are omnidirectional casters with brakes and are fixedly connected to the four corners of the bottom of the housing.

[0015] Preferably, the enclosure wall is provided with a control display panel and an exhaust fan, and a storage battery is provided at the bottom of the enclosure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Temperature and Flow Rate Control: This invention incorporates a sealed flow cell and a cooling assembly, which rapidly cools the water sample to a suitable temperature and ensures stable flow rate during instrument testing. This helps guarantee the representativeness of the water vapor sample collection, facilitates accurate water vapor quality testing, and improves the reliability of the test results.

[0018] 2. Sealing Guarantee: The feed pipe is equipped with a universal water pipe connector, which can be connected to various sampling pipe connectors of different models on the boiler. This effectively ensures the sealing requirements of the water sample throughout the entire process of passing through the testing instrument during on-site testing, avoiding test errors and inaccurate data due to sealing problems.

[0019] 3. Improved portability: The entire device is designed to be portable and is equipped with a box with wheels at the bottom, which facilitates flexible operation and movement at the power station site, improves work efficiency, and reduces time waste and work delays caused by inconvenient equipment transportation.

[0020] Through the above design, this invention can play an important role in the inspection of water and steam quality in power plant boilers, providing convenience and guarantee for related work, and has significant technical advantages and practical value.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0023] Figure 2 This is a top view of a showerhead.

[0024] Figure 3 This is a 3D diagram of a universal water pipe connector.

[0025] In the diagram: 1. Moving wheel; 2. Box body; 3. Sealed flow tank; 4. Sampling pipeline; 5. Feed pipeline; 6. Universal water pipe connector; 7. Sealed top cover; 8. Shower head; 9. Refrigeration compressor; 10. Sampling pump; 11. Throttling valve; 12. Feed switch valve; 13. Exhaust port; 14. Cleaning pipeline; 15. Cleaning switch valve; 16. Pull rod; 17. Control display panel; 18. Exhaust fan; 19. Battery; 20. Silicone sleeve inner plug; 21. Clamp; 22. Knob; 23. Coolant circulation pipeline; 24. Boiler sampling pipe connector. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] like Figures 1-3 As shown, this embodiment provides a sampling device suitable for detecting the steam and water quality of power plant boilers, including a box 2 with a movable wheel 1 at the bottom, a sealed flow pool 3 inside the box, a cooling component inside the sealed flow pool, and a sampling pipe 4 and a feed pipe 5 connected to the sealed flow pool. A universal water pipe connector 6 is connected to the end of the feed pipe.

[0030] This device is capable of collecting water samples for testing, ensuring the airtightness of the instrument throughout the testing process. It can effectively connect various types of sampling pipe connectors from boilers to the device's feed line, while ensuring that the temperature and flow rate of the water sample meet the instrument's testing requirements, thus guaranteeing the accuracy and validity of the on-site test results. Furthermore, this device meets the need for portable sampling in on-site inspection of water and steam quality in power plant boilers, improving the standardization and accuracy of the testing.

[0031] In this embodiment of the utility model, the sealed flow pool is an inner liner with a sealed top cover 7 fixedly connected to the top. The inner liner is used to collect the water sample to be tested, and a temperature sensor is installed inside the inner liner.

[0032] In this embodiment of the utility model, a shower head 8 connected to the feed pipe is provided below the sealing cover. This design allows the water sample to flow evenly into all parts of the inner tank, which is convenient for rinsing the inner tank and avoids interference from residues inside the inner tank on the test results.

[0033] In this embodiment of the present invention, the cooling assembly includes a coolant circulation pipe 23, which is spirally coiled from top to bottom inside the inner liner, and both ends of the coolant circulation pipe extend out of the inner liner and are connected to a miniature refrigeration compressor 9.

[0034] The coolant circulation pipeline is filled with coolant, and the coolant temperature is controlled by a refrigeration compressor, thereby achieving rapid cooling of the water sample in the inner tank and ensuring a stable flow rate of the water sample during instrument testing.

[0035] In this embodiment of the invention, the refrigeration compressor is fixedly connected to the bottom of the box body outside the inner liner.

[0036] In this embodiment of the utility model, the sampling pipeline is connected to the bottom of the inner tank and its sampling port extends to the outside of the box. The sampling pipeline is provided with a sampling pump 10 and a throttle valve 11 in sequence along the liquid flow direction, which can accurately control the water flow rate of the sampling port.

[0037] In this embodiment of the utility model, the feed pipe is connected to the top of the inner liner, and a feed switch valve 12 is provided on the feed pipe.

[0038] In this embodiment of the utility model, the top of the inner liner is connected to an exhaust port 13 for discharging air from the inner liner, and an exhaust switch valve is installed on the exhaust port.

[0039] In this embodiment of the invention, the top of the exhaust port extends to the outside of the housing.

[0040] In this embodiment of the utility model, the top of the inner liner is also connected to a cleaning pipe 14, the other end of the cleaning pipe extends to the outside of the box for external cleaning water source, and a cleaning switch valve 15 is provided on the cleaning pipe.

[0041] During the switching of different water samples for testing, the cleaning pipeline can be used to purge and rinse the inner tank to remove residual liquid inside the tank and avoid interference with the test results.

[0042] In this embodiment of the utility model, the movable wheels are universal wheels with brakes and are fixedly connected to the four corners of the bottom of the box; a pull rod 16 is provided on the top of the box to facilitate the dragging and moving of the device.

[0043] In this embodiment of the utility model, a control display panel 17 is provided on the wall of the box, and an exhaust fan 18 is installed to expel the hot air inside the box in a timely manner; a storage battery 19 is provided at the bottom of the box, which is used to power all the electrical components of the device.

[0044] In this embodiment of the utility model, the universal water pipe connector is existing technology, which facilitates the connection of various sampling pipe connectors of different models in the boiler. Based on the diameter of the boiler sampling pipe connector, the corresponding number of concentric silicone sleeve inner plugs 20 are first removed from the silicone sleeve to match the inner diameter of the sleeve with the diameter of the boiler sampling pipe connector. After inserting the boiler sampling pipe connector into the silicone sleeve, the knob 22 on the adjustable clamp 21 is rotated to tighten the clamp, applying pressure to the silicone sleeve and tightly wrapping it around the boiler sampling pipe connector 24, thus achieving a tight seal and ensuring the water pipe's airtightness. Furthermore, after use, the connector can be removed by rotating the clamp knob in reverse, facilitating reuse.

[0045] In this embodiment of the invention, the working principle of the sampling device for detecting the steam and water quality of a power plant boiler is as follows: During the on-site testing of steam and water quality, the water sample flows from the feed pipe into a sealed flow tank for cooling to meet the testing requirements, and then flows from the sampling pipe into the instrument pipe for testing, thus avoiding any impact on the test results. The following is a detailed description of the operation for different water sample effluent conditions:

[0046] Firstly, it addresses the issue of inconsistent sampling pipe diameters on boilers. Universal water pipe connectors can connect to various boiler sampling pipes of different diameters, improving testing efficiency.

[0047] Secondly, in cases where the water sample temperature is too high, the water sample flow rate is evenly distributed into the sealed flow tank through the showerhead. After rinsing is complete, the throttle valve is closed, allowing the water sample to fill the inner tank. Excess air is discharged through the vent. The cooling components are then turned on, and the water sample temperature is observed through the control display panel. Once the temperature reaches a suitable range for testing, the throttle valve and sampling pump are opened, and data analysis is performed using testing instruments to improve the accuracy of the test data and avoid damaging the testing instruments.

[0048] Thirdly, there are situations where the water sample outflow rate is too low and cannot come into contact with air. Because the water sample cannot come into contact with air and there are requirements for the water sample flow rate during dissolved oxygen testing, a sealed flow-through tank is used to ensure that no air comes into contact during the test. The water sample flows evenly into the sealed flow-through tank through the showerhead. After rinsing is complete, the throttle valve is closed, allowing the water sample to fill the inner tank. Excess air is then discharged through the vent. After the water sample overflows from the vent, the vent valve is closed, and the throttle valve and sampling pump are opened for instrument testing. Readings are taken after the values ​​stabilize, which improves the accuracy of the test data.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A sampling device suitable for detecting the quality of steam and water in power plant boilers, characterized in that: The device includes a housing with casters at the bottom, a sealed flow pool inside the housing, a cooling assembly inside the sealed flow pool, and a sampling pipe and a feed pipe connected to the sealed flow pool. A universal water pipe connector is connected to the end of the feed pipe.

2. The sampling device for detecting steam and water quality in power plant boilers according to claim 1, characterized in that: The sealed flow pool is an inner liner with a sealed top cover fixedly connected to it.

3. The sampling device for detecting steam and water quality in power plant boilers according to claim 2, characterized in that: The cooling assembly includes a coolant circulation pipe that spirals from top to bottom inside the inner liner, with both ends extending outside the inner liner and connected to a miniature refrigeration compressor.

4. The sampling device for detecting steam and water quality in power plant boilers according to claim 3, characterized in that: The refrigeration compressor is fixedly connected to the bottom of the box body outside the inner liner.

5. The sampling device for detecting steam and water quality in power plant boilers according to claim 2, characterized in that: The sampling pipeline is connected to the bottom of the inner liner and its sampling port extends to the outside of the box. A sampling pump and a throttle valve are sequentially installed on the sampling pipeline along the liquid flow direction.

6. The sampling device for detecting steam and water quality in power plant boilers according to claim 2, characterized in that: The feed pipe is connected to the top of the inner liner, and a feed switch valve is installed on the feed pipe.

7. The sampling device for detecting steam and water quality in power plant boilers according to claim 2, characterized in that: The top of the inner liner is connected to an exhaust port, and an exhaust switch valve is installed on the exhaust port.

8. The sampling device for detecting steam and water quality in power plant boilers according to claim 2, characterized in that: The top of the inner liner is also connected to a cleaning pipe, the other end of which extends to the outside of the box for external cleaning water source, and a cleaning switch valve is installed on the cleaning pipe.

9. The sampling device for detecting steam and water quality in power plant boilers according to claim 1, characterized in that: The casters are omnidirectional wheels with brakes and are fixedly connected to the four corners of the bottom of the box.

10. The sampling device for detecting steam and water quality in power plant boilers according to claim 1, characterized in that: The enclosure is equipped with a control display panel and an exhaust fan, and a battery is installed at the bottom of the enclosure.

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