Special gas sampling device

Abstract

The utility model discloses a special gas sampling device which comprises buffer tanks symmetrically arranged in a suitcase body, a sampling communication mechanism arranged on one side of each buffer tank, a gas outlet pipe arranged on the other side of each buffer tank, a connector arranged on the gas outlet pipe extending out of the suitcase body, a vacuum pipe and a waste gas pipe arranged on the gas outlet pipe in a branched manner, and electric control valves arranged on the vacuum pipe and the waste gas pipe, an electric control valve is also arranged on the side, close to the connector, of the gas outlet pipe, monitoring control mechanisms are arranged on the buffer tank and the suitcase body, a purification mechanism is further arranged in the suitcase body, and the waste gas pipe is connected with the purification mechanism; according to the utility model, the plurality of groups of buffer tanks and different gas collecting and inlet structures are arranged and are matched with the control of the electric control valve, so that various different special gases can be sampled and temporarily stored, and meanwhile, the special gases or air in the pipeline can be emptied through the vacuum pipe; and inaccuracy of component detection data caused by mixing of other gases during sampling of other special gases is avoided, and the practicability is greatly improved.

Description

Technical Field

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

[0002] The special gas sampling device is used to collect the gas in a specified area for analyzing the composition of the gas in this area; in environmental protection, production or laboratories, it is necessary to bring the gas sample back to the laboratory for detailed analysis.

[0003] The current special gas sampling device blows out impurities in the pipeline by introducing high-pressure gas. For example, a special gas sampling device disclosed in the publication number CN210487397U discloses blowing away impurities in the pipeline by introducing nitrogen through a nitrogen pipeline to ensure the cleanliness of the pipeline. However, a large amount of nitrogen will remain in the pipeline by this method. After introducing the special gas, it will be mixed with the special gas, affecting the accurate concentration of the special gas and causing deviation in detection. At the same time, this sampling device has no buffer structure and can only be directly connected to the detection device. During sampling at the gas production site, it cannot be stored, and a temporary storage gas tank has to be prepared separately, which is very troublesome. Therefore, the utility model proposes a special gas sampling device to solve the problems existing in the prior art. Summary of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a special gas sampling device. The special gas sampling device can realize the sampling and temporary storage of a variety of different special gases by setting multiple buffer tanks and different collection and intake structures, and cooperating with the control of the electric control valve, which solves the defect that the existing sampling device can only be directly connected to the detector or externally connected to the storage structure. At the same time, the special gas or air in the pipeline can be emptied through the vacuum tube, avoiding the inaccurate component detection data caused by the mixing of other gases when sampling other special gases, and greatly improving the practicability.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A special gas sampling device includes a portable box body, buffer tanks, a sampling connection mechanism, an air outlet pipe, a connection port, and a monitoring and control mechanism. Multiple buffer tanks are symmetrically arranged in the portable box body. One side of the buffer tank is provided with a sampling connection mechanism, and the other side of the buffer tank is provided with an air outlet pipe. The air outlet pipe extends out of the portable box body and is provided with a connection port. A vacuum tube and a waste gas pipe are branched on the air outlet pipe. Electric control valves are arranged on both the vacuum tube and the waste gas pipe. An electric control valve is also arranged on the air outlet pipe near the connection port. A monitoring and control mechanism is arranged on the buffer tank and the portable box body. A purification mechanism is also arranged in the portable box body, and the waste gas pipe is connected to the purification mechanism.

[0006] The further improvement lies in that: the sampling connection mechanism includes a sampling interface, a sampling intake hood and a sampling air pump. The sampling interface is arranged above one side of the portable box body, and the sampling intake hood is arranged below one side of the portable box body, which can provide different sampling connection methods. A sampling air pump is arranged in the portable box body. The sampling interface and the sampling intake hood are both connected to the intake end of the sampling air pump through pipelines, and electric control valves are arranged on the pipelines. The outlet end of the sampling air pump is respectively connected to the buffer tank through pipelines, and electric control valves are arranged on the pipelines.

[0007] The further improvement lies in that: the monitoring and control mechanism includes a pressure sensor, a control display screen, a main controller and a battery pack. A pressure sensor is arranged on the buffer tank, and the detection end of the pressure sensor extends into the interior of the buffer tank. A control display screen is correspondingly arranged on the portable box body above the connection port. A main controller is arranged in the portable box body. The pressure sensor, the control display screen and the electric control valve are electrically connected to the main controller. A battery pack is arranged in the portable box body, and the start and stop of the electric control valves and devices on the buffer tank and related pipelines are controlled through the control display screen.

[0008] The further improvement lies in that: the purification mechanism includes a purification box, a sealed plug-in rack, a purification filter element and an air outlet. A purification box is arranged on one side inside the portable box body. A sealed plug-in rack is arranged in the purification box. A purification filter element is arranged in the sealed plug-in rack. The waste gas pipe is communicated with the lower side of one side of the purification box, and an air outlet is arranged above the other side of the purification box.

[0009] The further improvement lies in that: a vacuum pump is arranged in the portable box body. The intake end of the vacuum pump is connected to a vacuum pipe, and the outlet end of the vacuum pump is communicated with an exhaust port arranged on the bottom surface of the portable box body. A hinged handle is arranged above the portable box body, which is convenient for carrying by hand.

[0010] The further improvement lies in that: both the vacuum pipe and the waste gas pipe are branch and aggregation pipelines. The branch pipelines of the vacuum pipe and the waste gas pipe are connected to the outlet pipes on one side of each group of buffer tanks and are respectively aggregated to the vacuum pump and the purification mechanism. The electric control valves are all arranged on the branch pipelines of the vacuum pipe and the waste gas pipe.

[0011] The beneficial effects of the present utility model are as follows: by setting multiple groups of buffer tanks and different collection intake structures and cooperating with the control of the electric control valves, the present utility model can realize the sampling and temporary storage of various different special gases, solves the defect that the existing sampling device can only be directly connected to a detector or externally connected to a storage structure. At the same time, the special gas or air in the pipeline can be emptied through the vacuum pipe, avoiding the inaccurate component detection data caused by the mixing of other gases when sampling other special gases, and greatly improving the practicability. Description of the Drawings

[0012] Figure 1 It is the front view of the present utility model.

[0013] Figure 2 This is the front sectional view structure diagram of the utility model.

[0014] Figure 3 This is the sectional view structure diagram of the purification box of the utility model.

[0015] Wherein: 1. Portable box body; 2. Buffer tank; 3. Exhaust pipe; 4. Connection port; 5. Vacuum pipe; 6. Waste gas pipe; 7. Electric control valve; 8. Sampling interface; 9. Sampling air inlet hood; 10. Sampling air pump; 11. Air pressure sensor; 12. Control display screen; 13. Main controller; 14. Battery pack; 15. Purification box; 16. Sealed plug-in rack; 17. Purification filter element; 18. Air outlet; 19. Vacuum pump; 20. Exhaust port; 21. Hinged handle. Specific implementation mode

[0016] In order to deepen the understanding of the present utility model, the following will further describe the present utility model in conjunction with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0017] According to Figure 1 、 Figure 2 and Figure 3 shown, this embodiment provides a special gas sampling device, including a portable box body 1, a buffer tank 2, a sampling connection mechanism, an exhaust pipe 3, a connection port 4 and a monitoring and control mechanism. Buffer tanks 2 are symmetrically arranged in the portable box body 1, and multiple groups of buffer tanks are provided. A sampling connection mechanism is arranged on one side of the buffer tank 2, and an exhaust pipe 3 is arranged on the other side of the buffer tank 2. The exhaust pipe 3 extends out of the portable box body 1 and is provided with a connection port 4. A vacuum pipe 5 and a waste gas pipe 6 are branched on the exhaust pipe 3. Electric control valves 7 are arranged on both the vacuum pipe 5 and the waste gas pipe 6. An electric control valve 7 is also arranged on the exhaust pipe 3 near the connection port 4. A monitoring and control mechanism is arranged on the buffer tank 2 and the portable box body 1. A purification mechanism is also arranged in the portable box body 1. The waste gas pipe 6 is connected to the purification mechanism, and the residual special gas in the pipeline and the buffer tank can be purified and discharged.

[0018] The sampling connection mechanism includes a sampling interface 8, a sampling air inlet hood 9 and a sampling air pump 10. The sampling interface 8 is arranged above one side of the portable box body 1, and the sampling air inlet hood 9 is arranged below one side of the portable box body 1, which can provide different sampling connection methods. The sampling air pump 10 is arranged in the portable box body 1. Both the sampling interface 8 and the sampling air inlet hood 9 are connected to the intake end of the sampling air pump 10 through pipelines and electric control valves 7 are arranged on the pipelines. The outlet end of the sampling air pump 10 is respectively connected to the buffer tank 2 through pipelines and electric control valves 7 are arranged on the pipelines, which is convenient for switching buffer tanks for buffering when different special gases need to be collected.

[0019] The monitoring and control mechanism includes a pressure sensor 11, a control display screen 12, a main controller 13, and a battery pack 14. The pressure sensor 11 is provided on the buffer tank 2, and the detection end of the pressure sensor extends into the interior of the buffer tank. A control display screen 12 is correspondingly provided on the portable box body 1 above the connection port 4. The main controller 13 is arranged inside the portable box body 1. The pressure sensor 11, the control display screen 12, and the electric control valve 7 are electrically connected to the main controller 13. A battery pack 14 is arranged in the portable box body 1. The start and stop of the electric control valve and the device on the buffer tank and the related pipelines are controlled through the control display screen.

[0020] The purification mechanism includes a purification box 15, a sealed plug-in rack 16, a purification filter element 17, and an air outlet 18. A purification box 15 is arranged on one side inside the portable box body 1. A sealed plug-in rack 16 is arranged in the purification box 15. A purification filter element 17 is arranged in the sealed plug-in rack 16. The waste gas pipe 6 is communicated with the lower side of one side of the purification box 15, and an air outlet 18 is arranged above the other side of the purification box 15.

[0021] A vacuum pump 19 is arranged inside the portable box body 1. The intake end of the vacuum pump 19 is connected to the vacuum pipe 5, and the outlet end of the vacuum pump 19 is communicated with an exhaust port 20 arranged on the bottom surface of the portable box body 1. A hinged handle 21 is arranged above the portable box body 1 for easy carrying by hand.

[0022] Both the vacuum pipe 5 and the waste gas pipe 6 are branch and summary pipelines. The branch pipelines of the vacuum pipe 5 and the waste gas pipe 6 are connected to the air outlet pipes 3 on one side of each group of buffer tanks 2 and are respectively summarized to the vacuum pump 19 and the purification mechanism. The electric control valves 7 are all arranged on the branch pipelines of the vacuum pipe 5 and the waste gas pipe 6.

[0023] When the special gas sampling device is used, first close the electric control valves on the electric control valve, the waste gas pipe, and the air outlet pipe close to the sampling interface and the sampling intake hood side, open the electric control valve on the vacuum pipe, start the vacuum pump to evacuate the pipeline and the buffer tank, and then close the electric control valve on the vacuum pipe and turn off the vacuum pump;

[0024] When sampling, according to the special gas sampling requirements, open the electric control valve at one end of the sampling interface or the sampling intake hood, and open the electric control valve between a group of buffer tanks and the sampling air pump, and then start the sampling air pump to draw the special gas into the buffer tank. Observe the air pressure of the buffer tank through the control display screen, close the electric control valve between the buffer tank and the sampling air pump, and then stop the sampling air pump to complete the sampling and storage;

[0025] When detection is required, connect the intake pipeline of the detection device to the connection port of the corresponding buffer tank, and then control the solenoid valve on the outlet pipe of the corresponding buffer tank through the control display screen to discharge the special gas collected in the buffer tank for detection. When the detection is completed, there is residual special gas in the buffer tank. Close the solenoid valve on the outlet pipe, and at the same time open the solenoid valve on the waste gas pipe. Then open the solenoid valves between the sampling interface, the sampling air hood, the sampling air pump and the buffer tank, and start the sampling air pump to draw in normal air to discharge the special gas in the pipeline and the buffer tank through the waste gas pipe after purification.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A special gas sampling device, characterized in that: It includes a portable box body (1), a buffer tank (2), a sampling connection mechanism, an air outlet pipe (3), a connection port (4) and a monitoring and control mechanism. The buffer tanks (2) are symmetrically arranged in the portable box body (1). A sampling connection mechanism is provided on one side of the buffer tank (2), and an air outlet pipe (3) is provided on the other side of the buffer tank (2). The air outlet pipe (3) extends out of the portable box body (1) and is provided with a connection port (4). A vacuum pipe (5) and an exhaust pipe (6) are branched on the air outlet pipe (3). Electric control valves (7) are provided on both the vacuum pipe (5) and the exhaust pipe (6). An electric control valve (7) is also provided on the air outlet pipe (3) near the connection port (4). A monitoring and control mechanism is provided on the buffer tank (2) and the portable box body (1). A purification mechanism is also provided in the portable box body (1). The exhaust pipe (6) is connected to the purification mechanism.

2. The special gas sampling device according to claim 1, characterized in that: The sampling connection mechanism includes a sampling interface (8), a sampling air inlet hood (9) and a sampling air pump (10). The sampling interface (8) is provided above one side of the portable box body (1), the sampling air inlet hood (9) is provided below one side of the portable box body (1), and the sampling air pump (10) is provided in the portable box body (1). Both the sampling interface (8) and the sampling air inlet hood (9) are connected to the intake end of the sampling air pump (10) through pipes and electric control valves (7) are provided on the pipes. The outlet end of the sampling air pump (10) is respectively connected to the buffer tank (2) through pipes and electric control valves (7) are provided on the pipes.

3. The special gas sampling device according to claim 1, characterized in that: The monitoring and control mechanism includes a pressure sensor (11), a control display screen (12), a main controller (13) and a battery pack (14). The pressure sensor (11) is provided on the buffer tank (2), the control display screen (12) is correspondingly provided on the portable box body (1) above the connection port (4), the main controller (13) is provided in the portable box body (1), the pressure sensor (11), the control display screen (12) and the electric control valve (7) are electrically connected to the main controller (13), and the battery pack (14) is provided in the portable box body (1).

4. A special gas sampling device according to claim 1, characterized in that: The purification mechanism includes a purification box (15), a sealed plug-in rack (16), a purification filter element (17) and an air outlet (18). The purification box (15) is provided on one side inside the portable box body (1). The sealed plug-in rack (16) is provided in the purification box (15). The purification filter element (17) is provided in the sealed plug-in rack (16). The exhaust pipe (6) communicates with the lower side of one side of the purification box (15), and the air outlet (18) is provided above the other side of the purification box (15).

5. A special gas sampling device according to claim 1, characterized in that: A vacuum pump (19) is provided in the portable box body (1). The intake end of the vacuum pump (19) is connected to the vacuum pipe (5), the outlet end of the vacuum pump (19) communicates with the bottom surface of the portable box body (1) and is provided with an exhaust port (20), and a hinged handle (21) is provided above the portable box body (1).

6. The special gas sampling device according to claim 5, wherein: Both the vacuum tube (5) and the exhaust pipe (6) are branch-aggregating pipelines. The branch pipelines of the vacuum tube (5) and the exhaust pipe (6) are connected to the air outlet pipes (3) on one side of each group of buffer tanks (2) and are respectively aggregated to the vacuum pump (19) and the purification mechanism. The electric control valves (7) are all arranged on the branch pipelines of the vacuum tube (5) and the exhaust pipe (6).

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