Closed pool or closed tank sampling system and use method thereof

Abstract

The invention provides a closed pool or closed tank sampling system. The closed pool or closed tank sampling system comprises a closed pool, a sampler, a closed pool water inlet pipeline, a closed pool water outlet pipeline, a water outlet header pipe and a gas outlet header pipe, wherein the closed pool water inlet pipeline is connected to an inlet of the closed pool; one end of the closed tank water outlet pipeline is connected with a water outlet of the closed tank; the other end of the closed tank water outlet pipeline is connected with a water outlet main pipe; and a branch pipeline of the gas outlet header pipe is connected with a gas outlet of the closed tank. According to the invention, the risk of environmental pollution caused by gas in the system overflowing through the blow-down pipe of the water outlet pipeline of the closed tank when no water enters the closed tank in an unexpected condition in the sampling process is effectively solved, and continuous tracking analysis of water in the water outlet main pipe is realized, so that the sampling accuracy is improved. The problem that data are inaccurate due to the fact that water is reserved in the pipeline is solved.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment, and in particular to a closed pool or closed tank sampling system and a use method thereof. Background Art

[0002] The present invention is suitable for continuous sampling of a closed pool or tank that continuously produces gas and continuously inflows and outflows water. During the sampling process, it is necessary to prevent pollutants in the wastewater from causing harm to the environment. At the same time, there is a risk of gas overflow when the closed pool is temporarily without water inflow. In the prior art, when sampling occurs temporarily without water inflow, the environmental protection, stability and safety of wastewater treatment cannot be guaranteed, and the wastewater indicators for sampling and analysis have no reference.

[0003] In the traditional process of continuous sampling of a closed pool or a closed tank, the sampling pipe is directly downward into the sampling barrel. When there is a temporary lack of water in the closed pool or the closed tank, the water in the closed pool or the closed tank will gradually drop to the position of the closed pool outlet through the water inlet pipe of the sampler, thereby enlarging the air chamber in the closed pool or the closed tank, causing the gas in the gas outlet main pipe to flow back. Then the gas in the gas outlet main pipe will overflow through the vent pipe of the closed pool outlet valve, and finally the gas in the gas outlet main pipe will pollute the atmosphere. These pollutants are extremely harmful to the environment and will cause irreparable losses.

[0004] The traditional sampling method is to lead a sampling tube from the main outlet pipe of the closed water pool for sampling. If there is a blockage in the branch pipe, the water quality of the outlet water cannot be continuously observed, there is a certain deviation in the sampling, and there may be pipeline retention causing incorrect sample analysis, and there are certain safety hazards in dealing with blockages. Operators need to go to various destinations to take samples, which is not only labor-intensive and dangerous to operators. Water samples can also easily splash onto the ground and pollute the environment. Summary of the invention

[0005] The purpose of the present invention is to provide a closed pool or closed tank sampling system that can avoid the above-mentioned sampling difficulties, achieve simple and safe sampling, and at the same time prevent the gas in the system from escaping into the atmosphere, and avoid problems such as water samples splashing out to pollute the environment.

[0006] In order to solve the above technical problems, the present invention provides a closed pool or closed tank sampling system: including a closed pool, a sampler, a closed pool water inlet pipeline, a closed pool water outlet pipeline, a water outlet main pipe and a gas outlet main pipe, the closed pool water inlet pipeline is connected to the entrance of the closed pool; one end of the closed pool water outlet pipeline is connected to the water outlet of the closed pool; the other end of the closed pool water outlet pipeline is connected to the water outlet main pipe; the branch pipeline of the gas outlet main pipe is connected to the gas outlet of the closed pool; the water inlet pipeline of the sampler is connected to the water outlet of the closed pool; one end of the water outlet pipeline of the sampler is connected to the water outlet of the sampler; the other end of the water outlet pipeline of the sampler is connected to the underground pipe network; the height of the water inlet pipeline of the sampler is higher than the sampler.

[0007] Furthermore, the closed pool water inlet pipeline is fixedly connected to the inlet of the closed pool through flange 1; and a closed pool water inlet valve is arranged on the closed pool water inlet pipeline.

[0008] Furthermore, the air outlet of the closed tank is fixedly connected to the branch pipeline of the air outlet main pipe through flange three.

[0009] Furthermore, the closed pool outlet pipe is composed of an outlet pipe section, a vertical pipe section and a return pipe section in sequence; the pipe section at the connection between the closed pool outlet pipe and the water outlet of the closed pool is the outlet pipe section; the water outlet pipe section is a horizontal pipe section; the vertical pipe section extends to the top of the water outlet main pipe; the outlet of the return pipe section is connected to the water outlet main pipe; the water outlet of the closed pool is fixedly connected to the outlet pipe section through flange 2.

[0010] Furthermore, a closed pool outlet valve is provided on the vertical pipe section; and the top end of the vertical pipe section is connected to the vent pipe section via a reducer.

[0011] Furthermore, the water inlet pipeline of the sampler is composed of vertical pipe section one, lower horizontal pipe section, vertical pipe section two, upper horizontal pipe section and vertical pipe section three in sequence; the inlet of the vertical pipe section one is connected to the outlet pipe section; the outlet of the vertical pipe section three is connected to the sampler; the upper horizontal pipe section is higher than the lower horizontal pipe section; and a sampler water inlet valve is arranged at the inlet of the sampler.

[0012] Furthermore, the height of the water outlet main pipe is higher than the height of the water outlet pipe section.

[0013] Furthermore, the height of the water outlet pipe section is higher than the height of the lower horizontal pipe section.

[0014] Furthermore, the height of the upper transverse pipe section is higher than the height of the water outlet main pipe.

[0015] Method for using the closed pool or closed tank sampling system: (1) When the closed pool is continuously inflowing, open the closed pool water inlet valve and the closed pool water outlet valve; the water in the closed pool continuously flows in from the closed pool water inlet pipe, and at the same time continuously flows out from the closed pool water outlet pipe and the sampler water inlet pipe, ensuring that the actual liquid level of the water in the closed pool is higher than the height of the upper horizontal pipe section, and the gas in the closed pool continuously flows out from the branch pipe of the gas outlet main pipe; (2) Open the sampler water inlet valve; the water in the closed pool flows into the sampler through the sampler water inlet pipe, and at the same time flows into the underground pipe network through the sampler water outlet pipe, and the sampling is continued, and the sampler maintains continuous water inflow and continuous water outflow; (3) When there is no water inflow into the closed pool, the water in the closed pool continues to flow out through the water outlet of the closed pool until the actual liquid level of the water in the closed pool drops to the height of the water outlet main pipe, and the water in the closed pool reaches a stable state; (4) Close the water inlet valve of the sampler.

[0016] The beneficial effects of the present invention are: it effectively solves the problem that when an unexpected situation occurs during the sampling process and there is no water in the closed pool, the gas in the system is prevented from escaping through the vent pipe of the closed pool outlet pipeline, causing the risk of environmental pollution. The present invention also realizes continuous tracking and analysis of the water in the outlet main, which not only avoids inaccurate data caused by water quality retention in the pipeline, but also prevents operational inconvenience and safety hazards caused by pipe blockage, greatly improves the convenience, environmental protection and safety of closed pool sampling, and avoids safety hazards such as climbing and forced posture during sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the closed pool or closed tank sampling system and the use method thereof of the present invention; Figure 2 It is a schematic diagram of the structure of a conventional sampling system of a closed pool or closed tank of the present invention; In the figure: 1. closed pool, 2. sampler, 3. closed pool water inlet pipeline, 5. water outlet main pipe, 6. air outlet main pipe, 8. outlet pipe section, 9. vertical pipe section, 10. reflux pipe section, 11. vertical pipe section one, 12. lower horizontal pipe section, 13. vertical pipe section two, 14. upper horizontal pipe section, 15. vertical pipe section three, 16. sampler water outlet pipeline, 17. flange one, 18. flange two, 19. flange three, 20. closed pool water inlet valve, 21. closed pool water outlet valve, 22. vent pipe section, 23. sampler water inlet valve, h1, actual liquid level of closed water pool. DETAILED DESCRIPTION

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings.

[0019] Refer to the attached Figure 1 As shown, the closed pool or closed tank sampling system includes a closed pool 1, a sampler 2, a closed pool water inlet pipe 3, a closed pool water outlet pipe, a water outlet main pipe 5 and a gas outlet main pipe 6, wherein the closed pool water inlet pipe 3 is connected to the entrance of the closed pool 1; one end of the closed pool water outlet pipe is connected to the water outlet of the closed pool 1; the other end of the closed pool water outlet pipe is connected to the water outlet main pipe 5; the branch pipe of the gas outlet main pipe 6 is connected to the gas outlet of the closed pool 1; the water inlet pipe of the sampler 2 is connected to the water outlet of the closed pool 1; one end of the water outlet pipe 16 of the sampler is connected to the water outlet of the sampler 2; the other end of the water outlet pipe 16 of the sampler is connected to the underground pipe network; the height of the water inlet pipe of the sampler 2 is higher than that of the sampler 2.

[0020] Furthermore, the closed pool water inlet pipeline 3 is fixedly connected to the inlet of the closed pool 1 through a flange 17; and a closed pool water inlet valve 20 is provided on the closed pool water inlet pipeline 3.

[0021] Furthermore, the air outlet of the closed tank 1 is fixedly connected to the branch pipeline of the air outlet main pipe 6 through a flange three 19.

[0022] Furthermore, the closed pool outlet pipeline is composed of an outlet pipe section 8, a vertical pipe section 9 and a return pipe section 10 in sequence; the pipe section at the connection between the closed pool outlet pipeline and the water outlet of the closed pool 1 is the outlet pipe section 8; the water outlet pipe section 8 is a horizontal pipe section; the vertical pipe section 9 extends to the top of the water outlet main pipe 5; the outlet of the return pipe section 10 is connected to the water outlet main pipe 5; the water outlet of the closed pool 1 is fixedly connected to the outlet pipe section 8 through a flange 2 18.

[0023] Furthermore, a closed pool outlet valve 21 is provided on the vertical pipe section 9; and the top end of the vertical pipe section 9 is connected to a vent pipe section 22 via a reducer.

[0024] Furthermore, the water inlet pipeline of the sampler 2 is composed of a vertical pipe section 11, a lower horizontal pipe section 12, a vertical pipe section 2 13, an upper horizontal pipe section 14 and a vertical pipe section 3 15 in sequence; the inlet of the vertical pipe section 11 is connected to the outlet pipe section 8; the outlet of the vertical pipe section 3 15 is connected to the sampler; the upper horizontal pipe section 14 is higher than the lower horizontal pipe section 12; and a sampler water inlet valve 23 is provided at the inlet of the sampler 2.

[0025] It should be noted that the sampler 2 is barrel-shaped with a barrel cover on top. When the sampler water inlet valve 23 is fully opened, the water quality in the sampler 2 and the actual water quality of the on-site outlet water can be observed above the barrel cover. The sampler's water outlet pipe 16 continuously discharges water to the underground pipe network. At this time, the sampler 2 maintains continuous water inlet and outlet.

[0026] Furthermore, the height of the water outlet main pipe 5 is higher than the height of the water outlet pipe section 8 .

[0027] Furthermore, the height of the water outlet pipe section 8 is higher than the height of the lower transverse pipe section 12 .

[0028] Furthermore, the height of the upper transverse pipe section 14 is higher than the height of the water outlet main pipe 5 .

[0029] It should be noted that, in the figure, the closed pool inlet valve 20 and the closed pool outlet valve 21 remain fully open, the closed water pool 1 continuously takes in water and discharges water, gas is continuously produced in the closed water pool 1, and the closed pool is continuously sampled from the vertical pipe section 11, wherein the actual height of the liquid level in the closed water pool 1 is h1, ensuring that h1 is higher than the height of the upper horizontal pipe of the sampler inlet pipeline.

[0030] Method for using the closed pool or closed tank sampling system: (1) When the closed pool 1 is continuously inflowing, the closed pool water inlet valve 20 and the closed pool water outlet valve 21 are opened; the water in the closed pool 1 is continuously inflowed from the closed pool water inlet pipe 3, and the water is continuously discharged from the closed pool water outlet pipe and the water inlet pipe of the sampler 2, ensuring that the actual liquid level h1 of the water in the closed pool is higher than the height of the upper horizontal pipe section 14, and the gas in the closed pool 1 is continuously discharged from the branch pipe of the gas outlet main pipe 6; (2) Open the sampler water inlet valve 23; the water in the closed pool 1 flows into the sampler 2 through the water inlet pipe of the sampler 2, and at the same time flows into the underground pipe network through the water outlet pipe 16 of the sampler, and the sampling is continued, and the sampler 2 maintains continuous water inflow and continuous water outflow; (3) When there is no water inflow into the closed pool, the water in the closed pool 1 continues to flow out through the water outlet of the closed pool 1 until the actual liquid level h1 of the water in the closed pool drops to the height of the water outlet main pipe 5, and the water in the closed pool 1 reaches a stable state; (4) Close the sampler water inlet valve 23.

[0031] It should be noted that in the traditional sampling system, when there is no water inflow into the closed water pool 1, the sampling water inlet pipe directly goes down into the sampling barrel, and the liquid level height h1 in the closed water pool or tank will be discharged through the water inlet pipe of the sampler 2 and drop to the water outlet of the closed water pool 1. This will cause the air chamber of the closed water pool 1 to become larger, and the gas in the gas outlet main pipe 6 to flow back. For the closed pool 1 that is connected to the grid and continuously produces gas, there is no water flow at this time, which will cause the gas in the gas outlet main pipe 6 to overflow through the vent pipe section 22 of the closed pool outlet pipe, causing process fluctuations, environmental pollution and other problems.

[0032] When there is temporarily no water inflow into the closed pool in the present invention, the water in the closed pool 1 will continuously flow out through the water outlet of the closed pool 1. Since the height of the water outlet main pipe 5 is higher than the height of the water outlet pipe section 8, and the height of the upper horizontal pipe section 14 is higher than the height of the water outlet pipe section 8, the actual liquid level height h1 cannot drop any further until it drops to the height of the water outlet main pipe 5. At this time, the sampler water inlet valve 23 is closed, and the water inlet pipeline of the closed sampler 2 acts as a water seal to prevent the gas in the gas outlet main pipe 6 from overflowing through the vent pipe section 22 of the water outlet pipeline of the closed pool 1, thereby effectively achieving a safety and environmental protection effect.

[0033] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. Closed pool or closed tank sampling system, characterized by: It includes a closed pool, a sampler, a closed pool water inlet pipe, a closed pool water outlet pipe, a water outlet main pipe and an air outlet main pipe, wherein the closed pool water inlet pipe is connected to the entrance of the closed pool; one end of the closed pool water outlet pipe is connected to the water outlet of the closed pool; the other end of the closed pool water outlet pipe is connected to the water outlet main pipe; the branch pipe of the air outlet main pipe is connected to the air outlet of the closed pool; the water inlet pipe of the sampler is connected to the water outlet of the closed pool; one end of the water outlet pipe of the sampler is connected to the water outlet of the sampler; the other end of the water outlet pipe of the sampler is connected to the underground pipe network; the height of the water inlet pipe of the sampler is higher than the sampler.

2. The closed pool or closed tank sampling system according to claim 1, characterized in that: The enclosed pool water inlet pipeline is fixedly connected to the inlet of the enclosed pool through flange 1; and a enclosed pool water inlet valve is arranged on the enclosed pool water inlet pipeline.

3. The closed pool or closed tank sampling system according to claim 1, characterized in that: The air outlet of the closed tank is fixedly connected to the branch pipeline of the air outlet main pipe through flange three.

4. The closed pool or closed tank sampling system according to claim 1, characterized in that: The closed pool water outlet pipeline is composed of an outlet pipe section, a vertical pipe section and a return pipe section in sequence; the pipe section at the connection between the closed pool water outlet pipeline and the water outlet of the closed pool is the outlet pipe section; the water outlet pipe section is a horizontal pipe section; the vertical pipe section extends to the top of the water outlet main pipe; the outlet of the return pipe section is connected to the water outlet main pipe; the water outlet of the closed pool is fixedly connected to the outlet pipe section through flange 2.

5. The closed pool or closed tank sampling system according to claim 4, characterized in that: A closed pool outlet valve is arranged on the vertical pipe section; and the top end of the vertical pipe section is connected to the vent pipe section via a reducer.

6. The closed pool or closed tank sampling system according to claim 4, characterized in that: The water inlet pipeline of the sampler is composed of vertical pipe section one, lower horizontal pipe section, vertical pipe section two, upper horizontal pipe section and vertical pipe section three in sequence; the inlet of the vertical pipe section one is connected to the outlet pipe section; the outlet of the vertical pipe section three is connected to the sampler; the upper horizontal pipe section is higher than the lower horizontal pipe section; and a sampler water inlet valve is arranged at the inlet of the sampler.

7. The closed pool or closed tank sampling system according to claim 4, characterized in that: The height of the water outlet main pipe is higher than the height of the water outlet pipe section.

8. The closed pool or closed tank sampling system according to claim 6, characterized in that: The height of the water outlet pipe section is higher than that of the lower transverse pipe section.

9. The closed pool or closed tank sampling system according to claim 6, characterized in that: The height of the upper transverse pipe section is higher than that of the water outlet main pipe.

10. A method for using the closed pool or closed tank sampling system according to any one of claims 1 to 9: Step 1: When the closed pool is continuously inflowing, open the closed pool water inlet valve and the closed pool water outlet valve; the water in the closed pool continuously flows in from the closed pool water inlet pipe, and at the same time continuously flows out from the closed pool water outlet pipe and the sampler water inlet pipe, ensuring that the actual liquid level of the water in the closed pool is higher than the height of the upper horizontal pipe section, and the gas in the closed pool continuously flows out from the branch pipe of the gas outlet main pipe; Step 2: Open the sampler water inlet valve; the water in the closed pool flows into the sampler through the sampler water inlet pipe, and at the same time flows into the underground pipe network through the sampler water outlet pipe, and the sampling is continued, and the sampler maintains continuous water inflow and continuous water outflow; Step 3: When there is no water inflow into the closed pool, the water in the closed pool continues to flow out through the water outlet of the closed pool until the actual liquid level of the water in the closed pool drops to the height of the water outlet main pipe, and the water in the closed pool reaches a stable state; Step 4: Close the sampler water inlet valve.

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