CN219590252U

CN219590252U - Gas chromatograph-mass spectrometer with vacuum detection function

Info

Publication number: CN219590252U
Application number: CN202320807550.9U
Authority: CN
Inventors: 张萍; 隋娜娜; 周祎菲; 任倩倩; 徐熙英
Original assignee: Qingdao Wanfu Quality Testing Co ltd
Current assignee: Qingdao Wanfu Quality Testing Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-08-25
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses a gas chromatograph-mass spectrometer with a vacuum detection function, which comprises a base, wherein a box body is arranged at the top of the base, and a gas chromatograph-mass spectrometer body is arranged at the top of the box body; a detection assembly is arranged in the box body; when the vacuum system vacuumizes the interior of the mass spectrum part, the bottle body is in a vacuum state, the detection end of the vacuum degree sensor is communicated with the bottle body, and the purpose of detecting the vacuum degree in the vacuum main pipeline is realized by detecting the vacuum degree in the bottle body; according to the utility model, when leakage and unsmooth connection occur at the joint of the vacuum degree sensor and the bottle body, the bottle body in the vacuum state can pump the clear water in the shell into the bottle body, so that a user can timely find the leakage condition by observing the conditions in the shell and the bottle body, and the tightness and stability of the joint of the vacuum degree sensor and the bottle body are ensured.

Description

Gas chromatograph-mass spectrometer with vacuum detection function

Technical Field

The utility model relates to the technical field of gas chromatograph-mass spectrometer, in particular to a gas chromatograph-mass spectrometer with a vacuum detection function.

Background

The gas chromatograph and the mass spectrometer are combined to be used, and the gas chromatograph and the mass spectrometer can be used as a high-efficiency qualitative and quantitative analysis tool for complex organic compounds.

Chinese patent No.: CN213689501U provides a gas chromatograph-mass spectrometer, the upper surface of gas chromatograph-mass spectrometer body is equipped with two fixed plates, the upper surface of gas chromatograph-mass spectrometer body is equipped with the sampling pipe, the upper end of sampling pipe is equipped with the sampling joint, the sampling box is arranged in between two fixed plates, the upper surface of sampling box is equipped with the mounting bracket, the one end of the output fixed connection pivot of motor, the lower extreme of sampling box is equipped with out the sampling pipe, be equipped with solenoid valve and filter membrane on the sampling pipe, vacuum sensor and vacuum pump all are arranged in gas chromatograph-mass spectrometer body upper surface, the induction end of vacuum sensor is arranged in gas chromatograph-mass spectrometer body, the air inlet of vacuum pump communicates gas chromatograph-mass spectrometer body through the blast pipe, can replace the manpower to prepare the solid into the solvent, comparatively use manpower sparingly still has vacuum degree detection function, guarantee the vacuum degree in the gas chromatograph-mass spectrometer body, guarantee the precision of detection.

The vacuum detection structure is arranged outside the top of the gas chromatograph body, lacks a protective structure, is easy to damage, and secondly, the connection mode of the vacuum degree sensor and the vacuum main pipeline is not described, the connection between the vacuum degree sensor and the vacuum main pipeline lacks a sealing structure and a protective structure, and the phenomenon of air leakage is easy to occur, so that the gas chromatograph with the vacuum detection function is required to be provided.

Disclosure of Invention

The utility model aims to provide a gas chromatograph-mass spectrometer with a vacuum detection function, which has the advantages of good sealing performance and stable connection, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the gas chromatograph-mass spectrometer with the vacuum detection function comprises a base, wherein a box body is arranged at the top of the base, and a gas chromatograph-mass spectrometer body is arranged at the top of the box body; a detection assembly is arranged in the box body; the bottom of the gas chromatograph-mass spectrometer body is communicated with a detection tube; the bottom of detecting tube runs through and extends to the inside of box, the bottom intercommunication of detecting tube has the control valve, the top of detecting the subassembly and the exhaust end intercommunication of control valve.

Preferably, the detection assembly comprises a bottle body, wherein a connecting pipe is communicated with the top of the bottle body, and the top of the connecting pipe is communicated with the exhaust end of the control valve.

Preferably, the outside cover of bottle is equipped with the casing, the top intercommunication of casing one side has the inlet tube, the front intercommunication of inlet tube has first sealed lid, first sealed positive inside of lid is inlayed and is equipped with first rubber piece.

Preferably, the lower part of one side of the bottle body is communicated with a drain pipe, the front side of the drain pipe is communicated with a second sealing cover, and a second rubber block is embedded in the front side of the second sealing cover.

Preferably, the detection assembly further comprises a vacuum degree sensor, a PLC (programmable logic controller) and a buzzer, the bottom of the inner cavity of the box body is provided with a bracket, and the bottoms of the vacuum degree sensor, the shell, the PLC and the buzzer are all connected with the top of the bracket.

Preferably, the detection end of the vacuum degree sensor penetrates through the shell and extends to the inside of the bottle body, the vacuum degree sensor is electrically connected with the PLC, and the PLC is electrically connected with the buzzer.

Preferably, the gas chromatograph-mass spectrometer body comprises a chromatographic part and a mass spectrum part, wherein the mass spectrum part comprises an ion source, a mass analyzer, a detector and a vacuum main pipeline, the ion source, the mass analyzer and the detector are all positioned in the vacuum main pipeline, and the top of the detection pipe is communicated with the vacuum main pipeline.

Preferably, one side of the chromatographic part is provided with and communicated with a gas connection pipe, and one end of the gas connection pipe, which is far away from the chromatographic part, is communicated with an ion source.

Compared with the prior art, the utility model has the beneficial effects that:

1. in the utility model, when the vacuum system vacuumizes the interior of the mass spectrum part, the bottle body is in a vacuum state, the detection end of the vacuum degree sensor is communicated with the bottle body, and the purpose of detecting the vacuum degree in the vacuum main pipeline is realized by detecting the vacuum degree in the bottle body.

2. According to the utility model, when leakage and unsmooth connection occur at the joint of the vacuum degree sensor and the bottle body, the bottle body in the vacuum state can pump the clear water in the shell into the bottle body, so that a user can timely find the leakage condition by observing the conditions in the shell and the bottle body, and the tightness and stability of the joint of the vacuum degree sensor and the bottle body are ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic perspective view of a detecting unit according to the present utility model;

FIG. 3 is an enlarged partial schematic view of the area A of FIG. 2 in accordance with the present utility model;

FIG. 4 is a first perspective view of the housing of the present utility model;

fig. 5 is a second perspective view of the housing of the present utility model.

In the figure: 1. a base; 2. a case; 3. a gas chromatograph-mass spectrometer body; 4. a detection tube; 5. a control valve; 6. a bottle body; 7. a connecting pipe; 8. a housing; 9. a water inlet pipe; 10. a first sealing cover; 11. a first rubber block; 12. a drain pipe; 13. a second sealing cover; 14. a second rubber block; 15. a vacuum sensor; 16. a PLC controller; 17. a buzzer; 18. a bracket; 19. a chromatographic section; 20. a mass spectrum section; 21. and (5) taking over the gas quality.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-5, the present utility model provides a technical solution: the gas chromatograph-mass spectrometer with the vacuum detection function comprises a base 1, wherein a box body 2 is arranged at the top of the base 1, and a gas chromatograph-mass spectrometer body 3 is arranged at the top of the box body 2; by providing a base 1 for supporting and mounting the device.

Further, the gas chromatograph body 3 includes a chromatograph portion 19 and a mass spectrometer portion 20, the mass spectrometer portion 20 includes an ion source, a mass analyzer, a detector and a vacuum main pipe, and the ion source, the mass analyzer and the detector are all located in the vacuum main pipe; the mass spectrometer section 20 is both a generic and selective detector. The method comprises the steps of ionizing sample molecules in an ion source part to form ions and fragment ions, separating the ions and the fragment ions according to different mass-to-charge ratios by a mass analyzer, generating signals in a detector part, amplifying and recording to obtain a mass spectrogram.

Because the mass spectrometer must work under vacuum conditions, the quality of the vacuum directly affects the performance of the gas chromatograph. The general vacuum system consists of two stages of vacuum, a front stage vacuum pump and a high vacuum pump, and is communicated with a vacuum main pipeline and used for providing a vacuum working environment for the mass spectrometer.

In addition, one side of the chromatographic section 19 is provided with and communicates with a gas connection pipe 21, and one end of the gas connection pipe 21 away from the chromatographic section 19 communicates with an ion source. The chromatographic section 19 is substantially identical to a typical chromatograph and includes a column box, a vaporization chamber, and a carrier gas system. Most do not have a detector, except for special needs, but rather use the MS as a detector. In addition, the main function of the chromatographic section 19 is to separate, under suitable chromatographic conditions, a sample of the mixture into individual components which are then passed to a mass spectrometer for identification. The chromatograph is operated at normal pressure and the mass spectrometer requires a high vacuum, so if the chromatograph uses a packed column, the chromatographic carrier gas must be removed through an interface device and molecular separator to allow the sample gas to enter the mass spectrometer section 20. If a capillary column is used in the chromatograph, the capillary can be inserted directly into the mass spectrometer ion source without breaking the mass spectrometer vacuum because the carrier gas flow in the capillary is much smaller than the packed column.

In addition, a detection component is arranged in the box body 2; through setting up box 2, can protect detection component, avoid detection component direct exposure to receive the damage easily in the outside.

The bottom of the gas chromatograph body 3 is communicated with a detection tube 4; the top of the detection tube 4 is communicated with a vacuum main pipeline. The bottom of the detection tube 4 penetrates through and extends to the inside of the box body 2, the control valve 5 is communicated with the bottom of the detection tube 4, and the top of the detection assembly is communicated with the exhaust end of the control valve 5. By providing the control valve 5, communication of the detection pipe 4 is controlled. By providing the detection tube 4, the vacuum main pipe is communicated with the detection assembly positioned inside the box body 2, so that the vacuum degree inside the mass spectrum part 20 can be detected outside by a user conveniently.

Noteworthy are: the detection component comprises a bottle body 6, a connecting pipe 7 is communicated with the top of the bottle body 6, and the top of the connecting pipe 7 is communicated with the exhaust end of the control valve 5. By arranging the bottle body 6, after the control valve 5 is opened, the air pressure in the bottle body 6 is the same as the air pressure in the bottle body 6.

Wherein, the outside cover of bottle 6 is equipped with casing 8, through setting up casing 8 for protect the outside of bottle 6, can prevent that external foreign matter from directly contacting with bottle 6, reduce the damage that causes bottle 6 when bumping, cause the not hard up of being connected between bottle 6 and connecting pipe 7 and control valve 5 easily when bumping, cause leaking, improved the stability of connection, provide effectual guarantee for the detection of vacuum.

Still further, the detection assembly further comprises a vacuum degree sensor 15, a PLC (programmable logic controller) 16 and a buzzer 17, wherein the detection end of the vacuum degree sensor 15 penetrates through the shell 8 and extends to the inside of the bottle body 6, the vacuum degree sensor 15 is electrically connected with the PLC 16, and the PLC 16 is electrically connected with the buzzer 17. When the vacuum system vacuumizes the interior of the mass spectrum part 20, the interior of the bottle body 6 is in a vacuum state as well, and the detection end of the vacuum degree sensor 15 is communicated with the bottle body 6, so that the purpose of detecting the vacuum degree in the vacuum main pipeline is realized by detecting the vacuum degree in the bottle body 6.

The vacuum degree sensor 15 converts the vacuum condition into an electronic signal and transmits the electronic signal to the PLC 16, when the vacuum degree in the bottle body 6 changes, the PLC 16 controls the buzzer 17 to give an alarm, so that the purpose of detecting the vacuum degree in the mass spectrum part 20 is achieved, after the vacuum state in the mass spectrum part 20 is kept stable, the detection tube 4 is closed through the control valve 5, and therefore the gas chromatograph body 3 can detect substances and is not easy to block.

Example 2

Referring to fig. 2-5, the difference between the present embodiment 2 and embodiment 1 is that: the upper side of one side of the shell 8 is communicated with a water inlet pipe 9, the front side of the water inlet pipe 9 is communicated with a first sealing cover 10, and a first rubber block 11 is embedded in the front side of the first sealing cover 10. The inlet tube 9 is used for pouring clear water into the casing 8, and wherein casing 8 and bottle 6 are transparent setting, can directly observe the inside condition of casing 8 and bottle 6 from the outside.

Through adopting the syringe, the syringe needle passes in first rubber piece 11 enters into inlet tube 9, pours into the clear water into in inlet tube 9, and the clear water enters into in the casing 8 afterwards to realize the purpose of pouring into, adopts the mode that the syringe was poured into simultaneously, conveniently operates in box 2, and also be difficult for taking place to leak when the water injection, the water injection rate is also controlled easily simultaneously.

It is worth noting that, when the housing 8 is filled with clear water and the clear water is not close to the connection between the vacuum degree sensor 15 and the bottle 6, when the connection between the vacuum degree sensor 15 and the bottle 6 is leaked and connected, the bottle 6 in a vacuum state can pump the clear water in the housing 8 into the bottle 6, so that a user can timely find the leakage condition by observing the conditions in the housing 8 and the bottle 6, and the tightness and stability of the connection between the vacuum degree sensor 15 and the bottle 6 are ensured.

In addition, the lower part of one side of the bottle body 6 is communicated with a drain pipe 12, the front surface of the drain pipe 12 is communicated with a second sealing cover 13, and a second rubber block 14 is embedded in the front surface of the second sealing cover 13; when the water body in the shell 8 needs to be discharged, the syringe is also adopted, and the needle head is inserted into the drain pipe 12 through the second rubber block 14 to extract the water body therein, so that the purpose of water discharge is realized.

Further, a bracket 18 is installed at the bottom of the inner cavity of the box body 2, and the bottoms of the vacuum degree sensor 15, the shell 8, the PLC controller 16 and the buzzer 17 are all connected with the top of the bracket 18. Through setting up support 18, can stabilize and support vacuum sensor 15, casing 8, PLC controller 16 and buzzer 17 and fix, improve its stability, be difficult for taking place to rock and lead to the connection between each part to appear not hard up, influence the normal work of gas chromatograph-mass spectrometer body 3.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a gas mass spectrometer with vacuum detection function, includes base (1), its characterized in that: the top of the base (1) is provided with a box body (2), and the top of the box body (2) is provided with a gas chromatograph-mass spectrometer body (3); a detection component is arranged in the box body (2);

the bottom of the gas chromatograph-mass spectrometer body (3) is communicated with a detection tube (4); the bottom of detection tube (4) runs through and extends to the inside of box (2), the bottom intercommunication of detection tube (4) has control valve (5), the top of detection component and the exhaust end intercommunication of control valve (5).

2. The gas chromatograph-mass spectrometer with the vacuum detection function according to claim 1, wherein: the detection assembly comprises a bottle body (6), a connecting pipe (7) is communicated with the top of the bottle body (6), and the top of the connecting pipe (7) is communicated with the exhaust end of the control valve (5).

3. The gas chromatograph-mass spectrometer with the vacuum detection function according to claim 2, wherein: the bottle is characterized in that a shell (8) is sleeved outside the bottle body (6), a water inlet pipe (9) is communicated with the upper portion of one side of the shell (8), a first sealing cover (10) is communicated with the front side of the water inlet pipe (9), and a first rubber block (11) is embedded in the front side of the first sealing cover (10).

4. A gas chromatograph-mass spectrometer with vacuum detection function as claimed in claim 3, wherein: the lower part of one side of the bottle body (6) is communicated with a drain pipe (12), the front surface of the drain pipe (12) is communicated with a second sealing cover (13), and a second rubber block (14) is embedded in the front surface of the second sealing cover (13).

5. The gas chromatograph-mass spectrometer with the vacuum detection function according to claim 4, wherein: the detection assembly further comprises a vacuum degree sensor (15), a PLC (programmable logic controller) (16) and a buzzer (17), wherein a bracket (18) is arranged at the bottom of the inner cavity of the box body (2), and the bottoms of the vacuum degree sensor (15), the shell (8), the PLC (16) and the buzzer (17) are connected with the top of the bracket (18).

6. The gas chromatograph-mass spectrometer with the vacuum detection function according to claim 5, wherein: the detection end of the vacuum degree sensor (15) penetrates through the shell (8) and extends to the inside of the bottle body (6), the vacuum degree sensor (15) is electrically connected with the PLC (16), and the PLC (16) is electrically connected with the buzzer (17).

7. The gas chromatograph-mass spectrometer with the vacuum detection function according to claim 1, wherein: the gas chromatograph-mass spectrometer body (3) comprises a chromatographic part (19) and a mass spectrum part (20), wherein the mass spectrum part (20) comprises an ion source, a mass analyzer, a detector and a vacuum main pipeline, the ion source, the mass analyzer and the detector are all positioned in the vacuum main pipeline, and the top of the detection pipe (4) is communicated with the vacuum main pipeline.

8. The gas chromatograph-mass spectrometer with the vacuum detection function of claim 7, wherein: one side of the chromatographic part (19) is provided with and communicated with a gas connection pipe (21), and one end of the gas connection pipe (21) far away from the chromatographic part (19) is communicated with an ion source.