Gas protection sample collector

Abstract

The utility model belongs to the technical field of sample collection devices, and particularly relates to a gas protection sample collector which comprises a sampling pipeline, the inlet end of the sampling pipeline is connected with a sampling valve, and the outlet end of the sampling pipeline is connected with a sampling bottle; an air inlet pipe and an exhaust pipe communicated with the sampling pipeline are respectively arranged at the upper part and the lower part of the sampling pipeline; the inlet end of the gas inlet pipe is connected with an inert gas bottle, and the outlet end of the exhaust pipe is connected with a one-way valve. According to the utility model, the gas inlet pipe and the gas outlet pipe are arranged on the sampling pipeline, so that inert gas is filled into the pipeline by utilizing the gas inlet pipe before sampling, and meanwhile, residual oxygen in the device can be discharged through the gas outlet pipe; moreover, the one-way valve is arranged at the outlet of the exhaust pipe, and after gas replacement is completed, oxygen in air cannot enter the sampling device through the exhaust pipe; and the effect of protecting the sample by using the inert gas is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of sample collection devices, in particular to a gas protection sample collector. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] In industrial production, online material sampling based on process requirements is crucial for optimizing production processes and controlling product quality. Some materials, due to physical or chemical reasons, are protected by inert gas within the equipment. Upon sampling, these materials may explode or react with oxygen in the air, adversely affecting material sampling.

[0004] Furthermore, existing sample collection devices typically only take the form of sampling bottles. Before sampling, the sampling bottle is connected to the sampling device. When the sampling bottle is replaced, air is trapped inside the bottle. After sampling, the material comes into contact with the oxygen in the bottle, rendering the inert gas shielding effect ineffective. This alters the chemical properties of the sampled material, affecting subsequent analysis and testing. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a gas-shielded sample collector.

[0006] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0007] A first aspect of the utility model provides a gas protection sample collector, comprising a sampling pipeline, wherein the inlet end of the sampling pipeline is connected to a sampling valve, and the outlet end of the sampling pipeline is connected to a sampling bottle;

[0008] An air inlet pipe and an exhaust pipe communicating with the sampling pipeline are respectively provided at the upper and lower parts of the sampling pipeline; the inlet end of the air inlet pipe is connected to an inert gas bottle, and the outlet end of the exhaust pipe is connected to a one-way valve.

[0009] Furthermore, a ball valve is provided in the middle of the sampling pipeline.

[0010] Furthermore, the sampling pipeline includes an upper sampling pipeline and a lower sampling pipeline;

[0011] The bottom end of the upper sampling pipeline is connected to one end of a ball valve through a flange, and the other end of the ball valve is connected to the top flange of the lower sampling pipeline.

[0012] Furthermore, the bottom end of the lower sampling pipeline is threadedly connected to the sampling bottle.

[0013] Furthermore, a solenoid valve is provided on the air intake pipe.

[0014] Furthermore, a ferrule plug is provided at the inlet end of the exhaust pipe.

[0015] Furthermore, the inlet end of the exhaust pipe extends into the bottom of the sampling bottle.

[0016] Furthermore, the sampling pipeline is arranged vertically.

[0017] Furthermore, the inlet end of the sampling pipeline is connected to the device to be sampled through a sampling valve, and the device to be sampled is a process pipeline or a reactor.

[0018] Furthermore, a sealing ring is provided at the mouth of the sampling bottle.

[0019] One or more of the above technical solutions have the following beneficial effects:

[0020] (1) The sample collector provided by the present invention realizes that before sampling, an inlet pipe and an exhaust pipe are arranged on the sampling pipeline, and inert gas is filled into the pipeline through the inlet pipe. At the same time, the residual oxygen in the device can be discharged through the exhaust pipe. Moreover, a one-way valve is provided at the outlet of the exhaust pipe. After the gas replacement is completed, the oxygen in the air cannot enter the sampling device through the exhaust pipe. The effect of protecting the sample with inert gas is achieved, and the sampled material is prevented from contacting with the air.

[0021] (2) The utility model extends the exhaust pipe into the bottom of the sampling bottle so as to quickly and smoothly complete the replacement of the gas in the device.

[0022] (3) The utility model provides a high-temperature resistant rubber sealing ring at the mouth of the sampling bottle, which can achieve a good airtight effect.

[0023] (4) The sampling pipeline of the utility model is arranged vertically, and its upper end is the inlet end. The sampling sample can fall into the sampling sample at the bottom of the sampling pipeline by gravity. The product structure is simple, with few parts, and relies on gravity to collect samples, which is convenient and practical.

[0024] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1This is a schematic structural diagram of a gas-shielded sample collector in Example 1.

[0027] In the figure, 1. upper sampling pipeline, 2. ball valve, 3. lower sampling pipeline, 4. sampling bottle, 5. air inlet pipe, 6. exhaust pipe, 7. one-way valve, 8. ferrule plug, 9. solenoid valve, 10. sealing ring, 11. device to be sampled. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] like Figure 1 As shown, the utility model proposes a gas protection sample collector, comprising a sampling pipeline, the inlet end of the sampling pipeline is connected to the sampling valve, and the outlet end of the sampling pipeline is connected to the sampling bottle;

[0031] The sampling pipeline has an internal hollow structure, and an air inlet pipe 5 and an exhaust pipe 6 connected to the interior of the sampling pipeline are respectively provided at the upper and lower parts of the sampling pipeline; the inlet end of the air inlet pipe 5 is connected to the inert gas bottle, and the outlet end of the exhaust pipe 6 is connected to a one-way valve 7.

[0032] In this utility model, the sampling pipe is arranged vertically. Before sampling, inert gas is introduced into the sample collection device through the air inlet pipe. An exhaust pipe connected to the outside world is installed at the lower sampling pipe. As the inert gas is introduced into the device, residual oxygen in the device is discharged through the exhaust pipe. The purge process lasts about 10 seconds, and the oxygen content in the device is reduced to less than 1%, meeting the material collection requirements. If a lower oxygen content is required, the purge time can be increased.

[0033] As a further technical solution, a ball valve 2 is provided in the middle of the sampling pipeline. The sampling pipeline includes an upper sampling pipeline 1 and a lower sampling pipeline 3. The upper sampling pipeline 1 and the lower sampling pipeline 3 are connected by a flange and a ball valve 2. The ball valve 2 is closed when the sampling bottle is replaced to prevent accidental leakage of inert gas from causing harm to personnel.

[0034] Specifically: the upper end flange of the upper sampling pipeline 1 is connected to the sampling valve, the bottom end of the upper sampling pipeline 1 is connected to one end of the ball valve 2 through a flange, the other end of the ball valve 2 is connected to the top flange of the lower sampling pipeline 3, and the bottom end of the lower sampling pipeline 3 is threadedly connected to the sampling bottle;

[0035] As a further technical solution, a high-temperature resistant rubber sealing ring 10 is provided at the mouth of the sampling bottle, which can achieve a good airtight effect.

[0036] As a further technical solution, a solenoid valve 9 is provided on the air intake pipe 5, and the replacement of the gas in the device is achieved by controlling the solenoid valve 9 connected to the air intake pipe.

[0037] As a further technical solution, the sampling line can be made of 304 stainless steel, which has excellent high-temperature resistance. The sampling line is vertically arranged, with its upper inlet connected to a sampling device 11 via a sampling valve. The sampling device 11 can be a process pipeline or reactor. After sampling, the sample falls by gravity into a sampling bottle at the bottom of the sampling line.

[0038] As a further technical solution, a ferrule plug is provided at the inlet end of the exhaust pipe 6, and the inlet end of the exhaust pipe 6 extends into the bottom of the sampling bottle so as to smoothly and quickly complete the replacement of the gas in the device.

[0039] Specifically, the exhaust pipe 6 is designed as a three-section structure, including a first vertical pipe, an inclined pipe and a second vertical pipe connected in sequence, and the first vertical pipe, the inclined pipe and the second vertical pipe are designed as an integral part.

[0040] The inclination angle between the inclined tube and the sampling pipeline is 40 degrees, the distance between the first vertical tube and the sampling pipeline is 125CM, one end of the inclined tube is inserted into the sampling pipeline and then connected to the second vertical tube. The connection between the inclined tube and the sampling pipeline adopts a sealed design, and the second vertical tube is inserted into the bottom of the sampling bottle to quickly complete the replacement of gas in the device.

[0041] The working principle of this utility model is:

[0042] When the solenoid valve is energized, inert gas enters the device through the inlet pipe, increasing the pressure inside the device. The one-way valve at the exhaust pipe outlet opens, allowing the gas inside the device to exit the device through the inlet of the internal exhaust pipe. Once the gas replacement is complete, the solenoid valve is de-energized, and no more inert gas enters the device. Eventually, the pressure inside and outside the device equalizes, and the one-way valve at the exhaust pipe outlet closes, completing the gas replacement. At this point, the sampling valve connected to the process device activates, allowing the sample to fall into the sampling bottle by gravity, completing the sampling.

[0043] If the sample is solid and the temperature is high, cooling may be necessary. To do this, reopen the solenoid valve, allowing gas to enter the device through the inlet pipe and exit through the exhaust pipe. This flow of gas effectively and quickly lowers the sample temperature. To prevent material from entering the exhaust pipe during venting, the exhaust pipe inside the device has a side opening and a ferrule plug installed at the end. To clean the exhaust pipe, remove the ferrule plug and complete the cleaning.

[0044] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A gas-shielded sample collector, characterized in that: It includes a sampling pipeline, the inlet end of the sampling pipeline is connected to the sampling valve, and the outlet end of the sampling pipeline is connected to the sampling bottle; An air inlet pipe and an exhaust pipe communicating with the sampling pipeline are respectively provided at the upper and lower parts of the sampling pipeline; the inlet end of the air inlet pipe is connected to an inert gas bottle, and the outlet end of the exhaust pipe is connected to a one-way valve.

2. A gas protection sample collector according to claim 1, characterized in that: A ball valve is provided in the middle of the sampling pipeline.

3. A gas protection sample collector according to claim 2, characterized in that: The sampling pipeline includes an upper sampling pipeline and a lower sampling pipeline; The bottom end of the upper sampling pipeline is connected to one end of a ball valve through a flange, and the other end of the ball valve is connected to the top flange of the lower sampling pipeline.

4. A gas protection sample collector according to claim 3, characterized in that: The bottom end of the lower sampling pipeline is threadedly connected to the sampling bottle.

5. The gas protection sample collector according to claim 1, characterized in that: The air intake pipe is provided with a solenoid valve.

6. The gas protection sample collector according to claim 1, characterized in that: The inlet end of the exhaust pipe is provided with a ferrule plug.

7. The gas protection sample collector according to claim 1, characterized in that: The inlet end of the exhaust pipe extends into the bottom of the sampling bottle.

8. The gas protection sample collector according to claim 1, characterized in that: The sampling pipeline is arranged vertically.

9. The gas protection sample collector according to claim 1, characterized in that: The inlet end of the sampling pipeline is connected to the device to be sampled through a sampling valve, and the device to be sampled is a process pipeline or a reactor.

10. The gas protection sample collector according to claim 1, characterized in that: A sealing ring is provided at the bottle mouth of the sampling bottle.

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