CN-117309489-B - Flow tube device combined with spray sample injection

CN117309489BCN 117309489 BCN117309489 BCN 117309489BCN-117309489-B

Abstract

The invention provides a flow tube device combined with spray sample injection, which comprises an outer tube, an inner tube, a first sealing joint, an air inlet tube, a second sealing joint, a liquid inlet tube and a three-way joint, wherein the inner tube passes through the outer tube, the two ends of the inner tube exceed the end parts of the outer tube, the first sealing joint is arranged at the two ends of the outer tube and is abutted against the inner tube and used for limiting a sealing space between the inner tube and the outer tube, the air inlet tube is inserted from the first end of the inner tube, the second sealing joint is sleeved on the air inlet tube and is in sealing connection with the first end of the inner tube, one end of the liquid inlet tube is inserted from the second end of the air inlet tube, the other end of the liquid inlet tube is used for communicating liquid to be reacted, the three-way joint comprises a first port, a second port and a third port, the first port is communicated with the second end of the air inlet tube and is penetrated from the second port.

Inventors

XU QIANG
Yu Tongpo
WANG ZHANDONG

Assignees

中国科学技术大学

Dates

Publication Date: 20260505
Application Date: 20220622

Claims (8)

1. A flow tube apparatus for combined spray sampling, comprising: A pressure gauge; The side wall of the outer tube is provided with a sampling hole and two vent holes, and the two vent holes are respectively used for connecting an air extractor and the pressure gauge; The inner tube penetrates through the outer tube, two ends of the inner tube exceed the end parts of the outer tube, an outlet is arranged on the side wall of the inner tube, and the outlet is opposite to the sampling hole; The sampler is inserted into the sampling hole at one end and communicated with the outlet, and the other end is used for communicating with a negative pressure device; The first sealing joints are arranged at two ends of the outer tube and are abutted against the inner tube, and are used for limiting a sealing space between the inner tube and the outer tube; An air inlet pipe inserted from a first end of the inner pipe; The second sealing joint is sleeved on the air inlet pipe and is in sealing connection with the first end of the inner pipe; a liquid inlet pipe with one end inserted from the second end of the air inlet pipe and the other end for communicating the liquid to be reacted, and The three-way joint comprises a first port, a second port and a third port, wherein the first port is communicated with the second end of the air inlet pipe and is in sealing connection, the liquid inlet pipe is inserted from the first port and penetrates out of the second port, the liquid inlet pipe is in sealing connection with the second port, and the third port is used for communicating air to be introduced.
2. The flow tube apparatus of claim 1, wherein the sampler comprises: The conical part is inserted into the sampling hole, an opening is formed in the tip, the opening is abutted to or adjacent to the outlet, and the conical part is connected with the sampling hole in a sealing mode; a transition part with one end connected with the conical part, and And the connecting part is connected with the other end of the transition part and is used for connecting a negative pressure device.
3. The flow tube apparatus of claim 2, wherein the diameter of the aperture ranges from 50 to 150um.
4. The flow tube apparatus according to claim 1, wherein an outer side wall of one end of the outer tube is provided with a recess portion having a side wall provided with a receptacle for inserting in an axial direction of the outer tube, and The flow tube apparatus further includes a thermocouple inserted from the insertion hole in an axial direction of the outer tube, the thermocouple being in sealing connection with the insertion hole.
5. The flow tube apparatus of claim 4, wherein the inner wall of the outer tube is provided with a bar-shaped groove in the axial direction, the bar-shaped groove is disposed between the insertion hole and the sampling hole, the thermocouple is stuck in the bar-shaped groove, and one end of the thermocouple is close to the outlet on the inner tube.
6. The flow tube apparatus of claim 1, wherein the two ends of the outer tube further comprise: The transition pipe comprises an equal-diameter portion and a variable-diameter portion, wherein the equal-diameter portion is connected with the first sealing joint, and two ends of the variable-diameter portion are respectively connected with the end portion of the outer pipe and the equal-diameter portion.
7. The flow tube apparatus of claim 1 wherein the flow tube apparatus comprises, The outer tube and the inner tube are quartz tubes; the air inlet pipe is a steel pipe, and The liquid inlet pipe is a capillary pipe.
8. The flow tube apparatus of claim 1 wherein the flow tube apparatus comprises, The first sealing joint comprises a vacuum pipe joint, and The second sealing joint comprises a reducing cutting sleeve pipe joint.

Description

Flow tube device combined with spray sample injection Technical Field The present disclosure relates to liquid sampling devices, and more particularly, to a flow tube device capable of accurately and quantitatively sampling. Background In the process of exploration and research in the chemical field, various liquid samples exist, and a corresponding matching sample injection mode system is correspondingly used. There are two common ways of vaporizing liquids, including heating the liquid to a vaporization temperature or bubbling a gas into the liquid sample. The two sample feeding modes have defects, and for mixed liquid reagents, the sample 1 is gasified and the sample 2 is not gasified or the sample 1 is gasified and the sample 2 starts to react due to different gasification temperatures of different liquids. The amount of the bubbling sample injection cannot be accurately calculated, so that the reactants and the products cannot be quantified. Disclosure of Invention In view of the above, to solve at least some of the above technical problems, the present disclosure provides a flow tube device combined with spray injection, comprising: An outer tube; an inner tube passing through the outer tube and having both ends beyond the ends of the outer tube; The first sealing joints are arranged at two ends of the outer tube and are abutted against the inner tube, and are used for limiting a sealing space between the inner tube and the outer tube; An air inlet pipe inserted from a first end of the inner pipe; The second sealing joint is sleeved on the air inlet pipe and is in sealing connection with the first end of the inner pipe; a liquid inlet pipe with one end inserted from the second end of the air inlet pipe and the other end for communicating the liquid to be reacted, and The three-way joint comprises a first port, a second port and a third port, wherein the first port is communicated with the second end of the air inlet pipe and is in sealing connection, the liquid inlet pipe is inserted from the first port and penetrates out of the second port, the liquid inlet pipe is in sealing connection with the second port, and the third port is used for communicating air to be introduced. According to some embodiments of the disclosure, a sampling hole is provided on a side wall of the outer tube; an outlet is arranged on the side wall of the inner tube and is opposite to the sampling hole, and The flow tube device further comprises a sampler, one end of the sampler is inserted into the sampling hole and communicated with the outlet, and the other end of the sampler is used for communicating with the negative pressure device. According to some embodiments of the disclosure, the sampler comprises: The conical part is inserted into the sampling hole, an opening is formed in the tip, the opening is abutted to or adjacent to the outlet, and the conical part is connected with the sampling hole in a sealing mode; a transition part with one end connected with the conical part, and And the connecting part is connected with the other end of the transition part and is used for connecting a negative pressure device. According to some embodiments of the disclosure, the diameter range of the opening includes 50-150 um. According to some embodiments of the disclosure, the flow tube apparatus further comprises: A pressure gauge; The side wall of the outer tube is provided with two vent holes, and the two vent holes are respectively used for connecting the air extractor and the pressure gauge. According to some embodiments of the present disclosure, an outer side wall of one end of the outer tube is provided with a recess portion, a receptacle hole is provided on a side wall of the recess portion along an axial direction of the outer tube, and The flow tube apparatus further includes a thermocouple inserted from the insertion hole in an axial direction of the outer tube, the thermocouple being in sealing connection with the insertion hole. According to some embodiments of the disclosure, the inner wall of the outer tube is provided with a bar-shaped groove along the axial direction, the bar-shaped groove is arranged between the insertion hole and the sampling hole, the thermocouple is clamped in the bar-shaped groove, and one end of the thermocouple is close to the outlet on the inner tube. According to some embodiments of the disclosure, the two ends of the outer tube further comprise: The transition pipe comprises an equal-diameter portion and a variable-diameter portion, wherein the equal-diameter portion is connected with the first sealing joint, and two ends of the variable-diameter portion are respectively connected with the end portion of the outer pipe and the equal-diameter portion. According to some embodiments of the disclosure, the outer tube and the inner tube are both quartz tubes; the air inlet pipe is a steel pipe, and The liquid inlet pipe is a capillary pipe. According to some embodiments of the present disclosur