Sampling pipeline structure

By designing a sampling pipeline structure including sampling pipe, conveying pipe, measuring pipeline, intake pipeline and cleaning pipeline, the problem of easy blockage of sampling pipeline in the prior art is solved, and efficient and safe sampling and cleaning effects are achieved.

CN222652664UActive Publication Date: 2025-03-21XIAN JINGZHAO POWER TECH
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Patent Information

Application Number
CN202420480622.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-13
Publication Date
2025-03-21
Estimated Expiration
2034-03-13

AI Technical Summary

Technical Problem

The existing sampling pipeline structure is prone to blockage due to slurry particles deposition, resulting in the inability to effectively perform sampling, and the cleaning process is dangerous and inconvenient.

Method used

A sampling pipeline structure is designed, including sampling pipeline, conveying pipeline, measurement pipeline, air intake pipeline and cleaning pipeline. By setting up a partition and a conveying pipe at the sampling port, one end of the conveying pipe extends to the sampling port, and the other end is connected to the measurement pipeline and the intake pipeline, gas sampling and back-purging are realized; the cleaning pipeline passes through the sampling tube and enters the conveying pipe, and uses the purge gas to form a negative pressure, and sprays water mist for cleaning.

Benefits of technology

It effectively prevents blockage of the sampling port, improves sampling efficiency and safety, and significantly enhances the cleaning effect through back-purge and water mist cleaning, avoiding the risk of manual blockage.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a sampling pipeline structure which comprises a sampling pipe which is connected with a sampling opening formed in the side wall of a container, a partition plate is arranged at the end, away from the container, of the sampling pipe, a conveying pipe is arranged on the partition plate, one end of the conveying pipe penetrates through the partition plate and extends to the sampling opening, and the other end of the conveying pipe is connected with a measuring pipeline and an air inlet pipeline. The measuring pipeline is used for sampling gas in the container, and the gas inlet pipeline is used for reversely purging the sampling port through the conveying pipe; and the cleaning pipelines respectively penetrate through the sampling pipes and extend into the conveying pipes so as to feed cleaning liquid into the conveying pipes. According to the utility model, the cleaning pipeline extends into the conveying pipe, so that the conveying pipe performs reverse blowing on the conveying pipe, and during blowing, the blowing gas quickly flows, so that strong negative pressure is formed in the conveying pipe, water is sucked into the conveying pipe through the cleaning pipeline and forms water mist, and the water mist and the blowing gas are sprayed out together to form reverse blowing of air with water mist.
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Description

Technical Field

[0001] The utility model relates to the technical field of gas pipeline sampling, in particular to a sampling pipeline structure. Background Art

[0002] After the flue gas from a chemical or coal-fired boiler is desulfurized and denitrified, it is usually necessary to sample and analyze / detect the treated flue gas at the sampling port. Due to the contact reaction between the slurry and the flue gas in the reaction tower, the flue gas after the reaction inevitably contains tiny slurry particles. When the dynamic airflow passes through the static sampling port, the slurry particles will be deposited at the sampling port. As the slurry microparticles gradually condense, it is easy to cause the sampling port to be blocked, making it impossible to perform effective sampling. If the sampling port is cleared manually, on the one hand, there is a problem of untimely clearing, and on the other hand, the desulfurized gas may contain acidic deposits. It is very dangerous to open the measuring port during operation, and the installed valve will get stuck after a period of use and needs to be cleaned frequently. Therefore, the utility model proposes a sampling pipeline structure to improve the above problems. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defect of the sampling pipeline structure in the prior art that it is easy to cause blockage during use, thereby providing a sampling pipeline structure.

[0004] In order to solve the above problems, the utility model provides a sampling pipeline structure, which includes:

[0005] A sampling tube connected to a sampling port provided on the side wall of the container, a partition is provided at one end of the sampling tube away from the container, a delivery tube is provided on the partition, one end of the delivery tube passes through the partition and extends to the sampling port, the other end of the delivery tube is respectively connected to a measuring pipeline and an air intake pipeline, the measuring pipeline is used to sample the gas in the container, and the air intake pipeline back-purges the sampling port through the delivery tube;

[0006] The cleaning pipelines respectively pass through the sampling tubes and extend into the delivery tubes to deliver the cleaning liquid into the delivery tubes.

[0007] Preferably, the sampling tube is arranged obliquely to the side wall of the container, one end of the sampling tube is connected to the sampling port, and the other end of the sampling tube extends obliquely upward.

[0008] Preferably, a first solenoid valve is provided on one end of the measuring pipeline close to the delivery pipe, and a pressure transmitter is also connected to the measuring pipeline.

[0009] Preferably, a second solenoid valve is provided on the air intake pipeline close to the delivery pipe, and one end of the air intake pipeline away from the delivery pipe is externally connected to compressed air.

[0010] Preferably, a return pipeline is also arranged between the measuring pipeline and the intake pipeline, one end of the return pipeline is connected to the measuring pipeline, and the other end of the return pipeline is connected to the intake pipeline. A third solenoid valve is also arranged on the intake pipeline, and the connection between the return pipeline and the intake pipeline is located between the second solenoid valve and the third solenoid valve.

[0011] Preferably, the cleaning pipeline extends into one end of the sampling tube and is vertically arranged between the sampling tube, one end of the cleaning pipeline passes through the sampling tube and extends into the delivery tube, a nozzle is provided at one end of the delivery tube close to the sampling port, the nozzle is truncated cone-shaped, and the cross-section of the end of the nozzle close to the sampling port is smaller than the cross-section of the other end of the nozzle, a water tank is provided at the other end of the cleaning pipeline, a connecting rod is provided between the water tank and the side wall of the container to connect with each other, and the cleaning pipeline extends into the water tank.

[0012] Preferably, a one-way valve structure is further provided in the cleaning pipeline, and the one-way valve structure is a Tesla one-way valve, and the flow direction of the Tesla one-way valve is from the water storage tank to the sampling port.

[0013] Preferably, the diameter of the delivery tube is much smaller than the diameter of the sampling tube.

[0014] Preferably, the delivery tube is a capillary tube.

[0015] The sampling pipeline structure provided by the utility model has the following beneficial effects:

[0016] 1. The utility model connects the sampling line at the sampling port on the side wall of the container, and a partition is arranged at one end of the sampling tube away from the container to achieve the effect of sealing one end of the sampling tube. A delivery pipe is prefabricated in the center of the partition, one end of the delivery pipe extends to the sampling port, and the other end of the delivery pipe is respectively connected to the measuring pipeline and the air intake pipeline, so that the gas at the sampling port is transported through the delivery pipe for sampling and analysis. In the process of back-purging, the sampling port is back-purged, and the cleaning pipeline penetrates the side wall of the sampling tube from bottom to top and extends into the delivery pipe to clean the sampling port;

[0017] 2. The utility model also extends the cleaning pipeline into the delivery pipe, so that the delivery pipe is back-purged. When the purge is performed, the purge gas flows quickly, so that a strong negative pressure is formed inside the delivery pipe, and water is sucked into the delivery pipe through the cleaning pipeline to form water mist, which is sprayed out together with the purge gas to form air-water mist back-purge;

[0018] 3. The utility model also arranges a Tesla one-way valve in the cleaning pipeline. The flow direction of the Tesla one-way valve is from the water storage tank to the sampling port, so that under normal conditions, the gas in the sampling tube will not enter the sampling pipeline. At the same time, when the water on the cleaning pipeline is cleaned, the flow of water can be accelerated to intensify the spray and atomization effect formed by the sampling pipeline close to the sampling port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the general assembly structure of the utility model;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the installation of the return pipeline of the utility model;

[0022] Figure 4 This is a schematic diagram of the one-way valve structure of the utility model;

[0023] Figure 5 It is a flow direction schematic diagram of the one-way valve structure of the utility model.

[0024] The reference numerals are as follows:

[0025] 1. Sampling tube; 2. Container; 3. Sampling port; 4. Partition; 5. Delivery pipe; 6. Measuring pipeline; 7. Air intake pipeline; 8. Cleaning pipeline; 9. First solenoid valve; 10. Pressure transmitter; 11. Second solenoid valve; 12. Return pipeline; 13. Third solenoid valve; 14. Water tank; 15. One-way valve structure; 16. Connecting rod; 17. Nozzle. DETAILED DESCRIPTION

[0026] like Figure 1-5 As shown, the utility model provides a sampling pipeline structure, which includes:

[0027] A sampling tube 1 is connected to a sampling port 3 provided on the side wall of a container 2. A partition 4 is provided at one end of the sampling tube 1 away from the container 2. A delivery tube 5 is provided on the partition 4. One end of the delivery tube 5 passes through the partition 4 and extends to the sampling port 3. The other end of the delivery tube 5 is respectively connected to a measuring pipeline 6 and an air intake pipeline 7. The measuring pipeline 6 is used to sample the gas in the container 2. The air intake pipeline 7 back-purges the sampling port 3 through the delivery tube 5.

[0028] The cleaning pipeline 8 passes through the sampling tube 1 and extends into the delivery tube 5 to deliver the cleaning liquid into the delivery tube 5. Figure 1-4As shown, a sampling pipeline structure is shown, in which a sampling pipe 1 is connected to a sampling port 3 on the side wall of a container 2, a partition 4 is arranged at one end of the sampling pipe 1 away from the container 2 to achieve the sealing effect of one end of the sampling pipe 1, and a φ14x2mm delivery pipe 5 is prefabricated in the center of the partition 4. The delivery pipe 5 is made of stainless steel, one end of the delivery pipe 5 extends to the sampling port 3, and the other end of the delivery pipe 5 is respectively connected to a measuring pipe 6 and an air intake pipe 7, which can be connected through a tee connection and connected to a measuring instrument through the measuring pipe 6, so that the gas at the sampling port 3 is transported through the delivery pipe 5 for sampling and analysis. During the back-purge process , the sampling port 3 is back-purged, and the cleaning pipeline 8 passes through the side wall of the sampling tube 1 from bottom to top and extends into the interior of the delivery tube 5, flush with the inner wall of the delivery tube 5, wherein the cleaning liquid can be water, and normal operation will not cause the water in the cleaning pipeline 8 to flow into the sampling port 3. When purging, the purge gas flows quickly to form a strong negative pressure inside the delivery tube 5, and the water is sucked into the delivery tube 5 through the cleaning pipeline 8 to form water mist, which is sprayed out together with the purge gas to form air-carrying water mist back-purging, which dilutes the slurry deposition on the one hand, and at the same time, the water purge greatly enhances the purge effect, so that the blockage of the sampling port 3 can be cleared.

[0029] In some embodiments, the sampling tube 1 is disposed obliquely to the side wall of the container 2, one end of the sampling tube 1 is connected to the sampling port 3, and the other end of the sampling tube 1 extends obliquely upward. Figure 1-4 As shown, the sampling tube 1 is inclined between the side wall of the container 2, one end of the sampling tube 1 is connected to the sampling port 3, and the other end of the sampling tube 1 extends upward at an angle, so that the liquid substance and other impurities in the container 2 will not flow into the sampling tube 1 to cause an impact.

[0030] In some embodiments, a first solenoid valve 9 is provided on one end of the measuring pipeline 6 close to the delivery pipe 5, and a pressure transmitter 10 is also connected to the measuring pipeline 6. Figure 1-4 As shown, whether the measurement of the gas in the container 2 is performed on the measuring pipeline 6 can be controlled by the first solenoid valve 9, which is commercially available. The pressure transmitter 10 on the measuring pipeline 6 transmits the pressure signal to other electronic devices to obtain the pressure information of the gas in the container 2, which is commercially available. The gas measured by the measuring pipeline 6 is discharged through the other end for processing.

[0031] In some embodiments, a second solenoid valve 11 is provided on the air intake line 7 near the delivery pipe 5, and one end of the air intake line 7 away from the delivery pipe 5 is connected to compressed air. Figure 1-4 As shown, a second solenoid valve 11 is provided on the air intake pipeline 7 near the delivery pipe 5 to control the state of the air intake pipeline 7. One end of the air intake pipeline 7 away from the delivery pipe 5 is externally connected to compressed air, and the sampling port 3 is back-purged by the compressed air.

[0032] In some embodiments, a return line 12 is further provided between the measuring line 6 and the intake line 7, one end of the return line 12 is connected to the measuring line 6, and the other end of the return line 12 is connected to the intake line 7. A third solenoid valve 13 is further provided on the intake line 7, and the connection between the return line 12 and the intake line 7 is located between the second solenoid valve 11 and the third solenoid valve 13. Figure 1-4 As shown, by connecting the return line 12 between the measuring line 6 and the air intake line 7, by controlling the third solenoid valve 13 to be closed, the first solenoid valve 9 to be closed, and the second solenoid valve 11 to be opened, the compressed air intake is closed, so that the gas passing through the measuring line 6 is back-purged through the delivery pipe 5 to the sampling port 3 for back-purging, so as to utilize the gas after measurement.

[0033] In some embodiments, the cleaning pipeline 8 is arranged vertically between one end of the sampling tube 1 and the sampling tube 1, and one end of the cleaning pipeline 8 passes through the sampling tube 1 and extends into the delivery tube 5. The delivery tube 5 is provided with a nozzle 17 at one end near the sampling port 3. The nozzle 17 is truncated. The cross section of the end of the nozzle 17 near the sampling port 3 is smaller than the cross section of the other end of the nozzle 17. The other end of the cleaning pipeline 8 is provided with a water tank 14. A connecting rod 16 is provided between the water tank 14 and the side wall of the container 2 to connect with each other, and the cleaning pipeline 8 extends into the water tank 14. Figure 1-4 As shown, the cleaning pipeline 8 extends into the interior of the delivery pipe 5 and is arranged vertically with the delivery pipe 5, so that after the cleaning liquid is sucked out through the cleaning pipeline 8, an atomization effect can be quickly formed, and it is sprayed out through the book delivery pipe 5 together with the high-pressure purge gas. The cleaning liquid can be water, so as to clean most of the sampling port 3 and form air-carrying water mist back-purge, which dilutes the slurry deposition on the one hand, and greatly enhances the purge effect by purge with water at the same time. A water storage tank 14 is arranged at the other end of the cleaning pipeline 8, and the water storage tank 14 and the side wall of the container 2 are connected to each other by a connecting rod 16. The cleaning pipeline 8 extends into the water storage tank 14 to provide cleaning water, and when it is sprayed out from the delivery pipe 5, the atomization effect can be enhanced by the nozzle 17. The nozzle 17 is a truncated cone-shaped shell with openings at both ends. The cross-section of the end of the nozzle close to the sampling port 3 is smaller than the cross-section of the other end of the nozzle, so as to enhance the atomization effect.

[0034] In some embodiments, a one-way valve structure 15 is further provided in the cleaning pipeline 8. The one-way valve structure 15 is a Tesla one-way valve. The flow direction of the Tesla one-way valve is from the water storage tank 14 to the sampling port 3. Figure 1-5As shown, a one-way valve structure 15 is also provided in the cleaning pipeline 8. The one-way valve structure 15 is a Tesla one-way valve. The flow direction of the Tesla one-way valve is from the water storage tank 14 to the sampling port 3, so that under normal conditions, the gas in the sampling tube 1 will not enter the sampling tube 1. At the same time, when water cleaning is performed on the cleaning pipeline 8, the flow of water can be accelerated to intensify the injection and atomization effect formed on the sampling tube 1 near the sampling port 3, so as to form air with water mist back purge, which dilutes the slurry deposition on the one hand, and greatly enhances the purge effect with water purge at the same time.

[0035] In some embodiments, the diameter of the delivery tube 5 is much smaller than the diameter of the sampling tube 1. Figure 1-4 As shown, the diameter of the delivery pipe 5 is much smaller than the diameter of the sampling pipe 1, and the diameter of the cleaning pipe 8 is much smaller than the diameter of the sampling pipe 1, so that the purge effect can be enhanced during the back-purge process.

[0036] In some embodiments, the delivery tube 5 is a capillary tube. Figure 1-4 As shown, the delivery tube 5 is a capillary tube, which is a copper tube. The size of the delivery tube is φ14x2mm. Under a certain pressure difference, the flow rate flowing through the capillary tube is stable, and the purge effect is enhanced during the back-purge process.

[0037] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. A sampling pipeline structure, characterized in that: include: A sampling tube connected to a sampling port provided on the side wall of the container, a partition is provided at one end of the sampling tube away from the container, a delivery tube is provided on the partition, one end of the delivery tube passes through the partition and extends to the sampling port, the other end of the delivery tube is respectively connected to a measuring pipeline and an air intake pipeline, the measuring pipeline is used to sample the gas in the container, and the air intake pipeline back-purges the sampling port through the delivery tube; The cleaning pipelines respectively pass through the sampling tubes and extend into the delivery tubes to deliver the cleaning liquid into the delivery tubes.

2. The sampling pipeline structure according to claim 1, characterized in that: The sampling tube is arranged obliquely between the side wall of the container, one end of the sampling tube is connected to the sampling port, and the other end of the sampling tube extends obliquely upward.

3. The sampling pipeline structure according to claim 1, characterized in that: A first solenoid valve is arranged on one end of the measuring pipeline close to the delivery pipe, and a pressure transmitter is also connected to the measuring pipeline.

4. The sampling pipeline structure according to claim 1, characterized in that: A second solenoid valve is arranged on the air intake pipeline close to the delivery pipe, and one end of the air intake pipeline away from the delivery pipe is externally connected to compressed air.

5. The sampling pipeline structure according to claim 4, characterized in that: A return pipeline is also arranged between the measuring pipeline and the intake pipeline, one end of the return pipeline is connected to the measuring pipeline, and the other end of the return pipeline is connected to the intake pipeline. A third solenoid valve is also arranged on the intake pipeline, and the connection between the return pipeline and the intake pipeline is located between the second solenoid valve and the third solenoid valve.

6. The sampling pipeline structure according to claim 1, characterized in that: The cleaning pipeline extends into one end of the sampling tube and is vertically arranged between the sampling tube. One end of the cleaning pipeline passes through the sampling tube and extends into the delivery tube. A nozzle is arranged at one end of the delivery tube close to the sampling port. The nozzle is truncated cone-shaped. The cross-section of the end of the nozzle close to the sampling port is smaller than the cross-section of the other end of the nozzle. A water tank is arranged at the other end of the cleaning pipeline. A connecting rod is arranged between the water tank and the side wall of the container to connect them to each other. The cleaning pipeline extends into the water tank.

7. The sampling pipeline structure according to claim 6, characterized in that: A one-way valve structure is also provided in the cleaning pipeline. The one-way valve structure is a Tesla one-way valve. The flow direction of the Tesla one-way valve is from the water storage tank to the sampling port.

8. The sampling pipeline structure according to claim 1, characterized in that: The diameter of the delivery tube is much smaller than the diameter of the sampling tube.

9. The sampling pipeline structure according to claim 1 or 8, characterized in that: The delivery tube is a capillary tube.