Time-of-flight mass spectrometry flight tube

Abstract

The utility model relates to a time-of-flight mass spectrometry flight tube, which comprises a sealing cover, an ion flow inlet and a reflector installation opening are formed in the two ends, in the length direction, of the flight tube base body respectively, and a detector installation opening is formed in the end, close to the ion flow inlet, of the flight tube base body; the two sealing cover mounting flanges are arranged on the reflector mounting opening and the detector mounting opening correspondingly, a plurality of through holes are formed in the end faces, away from the flight pipe base body, of the sealing cover mounting flanges, locking planes are arranged at the two opposite ends of the sealing cover mounting flanges correspondingly, and the locking planes are perpendicular to the axes of the through holes; the locking plane is provided with a plurality of first threaded blind holes. By arranging the locking plane and the first threaded blind hole, the tightness of the butt joint face of the sealing cover and the sealing cover installation flange is guaranteed, and the air tightness of an inner cavity of the flight pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of time-of-flight mass spectrometry, in particular to a time-of-flight mass spectrometry flight tube. Background Art

[0002] An existing time-of-flight mass spectrometer flight tube includes a reflector and a detector arranged in the flight tube. In order to facilitate maintenance or cleaning, installation ports are respectively set near the reflector and the detector of the flight tube and are closed by a cover. The cover is usually connected to the installation port through a flange. At this time, since the bolts connecting the flanges are all arranged in the same direction, the bolts are easily loosened by vibration, resulting in a reduction in the airtightness of the internal cavity of the flight tube, affecting the accuracy of the detection result.

[0003] Therefore, it is urgent to propose a time-of-flight mass spectrometer flight tube that can improve the air tightness of the internal cavity. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a time-of-flight mass spectrometer flight tube.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A time-of-flight mass spectrometer flight tube, comprising:

[0007] Capping;

[0008] A flight tube substrate, wherein two ends of the flight tube substrate along the length direction are respectively provided with an ion flow inlet and a reflector mounting port, and one end of the flight tube substrate close to the ion flow inlet is provided with a detector mounting port;

[0009] Two cover mounting flanges, the two cover mounting flanges are respectively arranged on the reflector mounting port and the detector mounting port, a plurality of through holes are arranged on the end surface of the cover mounting flange away from the flight tube base, locking planes are respectively arranged at opposite ends of the cover mounting flange, the locking planes are perpendicular to the axis of the through hole, and a plurality of first threaded blind holes are arranged on the locking planes.

[0010] As a further improvement: the end surface of the cover mounting flange away from the flight tube base extends in a direction away from the cover mounting flange to form a plurality of arcuate support plates, and the plurality of arcuate support plates are evenly spaced along the circumference of the opening of the cover mounting flange.

[0011] As a further improvement: a plurality of second threaded blind holes are provided on the end surface of the cover mounting flange away from the flight tube base.

[0012] As a further improvement: the detector mounting port is connected to the cover mounting flange through an extension tube.

[0013] As a further improvement: a docking flange is provided on the ion flow inlet, and mounting planes are respectively provided at opposite ends of the docking flange, and the mounting planes and the locking planes of the cover mounting flange arranged on the reflector mounting port are parallel to each other.

[0014] As a further improvement: a reflector connecting flange is provided at one end of the flight tube base body close to the reflector mounting opening.

[0015] As a further improvement: the axis of the opening of the reflector connecting flange and the axis of the opening of the cover mounting flange arranged on the detector mounting port are offset to form a 90° angle, and any one of the mounting planes is arranged within the angle.

[0016] The utility model has the following beneficial effects:

[0017] 1. The cover mounting flange is provided with a locking plane perpendicular to the axis of the through hole on the basis of providing a through hole, and a first threaded blind hole is provided on the locking plane. The cover mounting flange can be further connected to the cover through the first threaded blind hole while being connected to the cover through the through hole. Since the locking plane is perpendicular to the axis of the through hole, when the cover is vibrated, the cover mounting flange is connected to the cover through the first threaded blind hole to lock the cover from loosening along the axis direction of the through hole, thereby ensuring the tightness of the joint surface between the cover and the cover mounting flange and improving the air tightness of the internal cavity of the flight tube.

[0018] 2. By setting the locking plane, the connection area between the cover and the cover mounting flange is increased, and the connection stability between the cover and the cover mounting flange is improved.

[0019] 3. By setting locking planes at the opposite ends of the cover mounting flange, the connection points between the cover and the cover mounting flange along the axis of the first threaded blind hole can be evenly set at both ends of the cover mounting flange, further improving the connection stability between the cover and the cover mounting flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 Another overall structural schematic diagram of the utility model;

[0023] Figure 3 for Figure 1 Enlarged view of part A in .

[0024] Reference numerals:

[0025] 1-flight tube base; 2-cover mounting flange; 3-extension tube; 4-butt flange; 5-reflector connection flange

[0026] 11- ion flow inlet; 12- reflector mounting port; 13- detector mounting port;

[0027] 21-through hole; 22-locking plane; 23-first threaded blind hole; 24-arc support plate; 25-second threaded blind hole

[0028] 41-Mounting surface. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0030] In the description of the present invention, the terms "upper", "lower", "above", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0032] The following combination Figure 1-3 The utility model is described in further detail.

[0033] Example 1

[0034] Reference Figure 1-3 As shown, this embodiment provides a time-of-flight mass spectrometer flight tube, comprising:

[0035] Capping;

[0036] A flight tube substrate 1, wherein two ends of the flight tube substrate 1 along the length direction are respectively provided with an ion flow inlet 11 and a reflector mounting port 12, and one end of the flight tube substrate 1 close to the ion flow inlet 11 is provided with a detector mounting port 13;

[0037] Two cover mounting flanges 2 are respectively arranged on the reflector mounting port 12 and the detector mounting port 13. A plurality of through holes 21 are arranged on the end surface of the cover mounting flange 2 away from the flight tube substrate 1. Locking planes 22 are respectively arranged at opposite ends of the cover mounting flange 2. The locking planes 22 are perpendicular to the axis of the through holes 21. The locking planes 22 are provided with a plurality of first threaded blind holes 23.

[0038] In one of the embodiments, the cover may be provided with an extension plate corresponding to the locking plane 22 to facilitate connection with the locking plane 22 .

[0039] As a further improvement, the end surface of the cover mounting flange 2 away from the flight tube base 1 extends in a direction away from the cover mounting flange 2 to form a plurality of arcuate support plates 24 , and the plurality of arcuate support plates 24 are evenly spaced along the circumference of the opening of the cover mounting flange 2 .

[0040] By setting the arc support plate 24, the connection area between the cover mounting flange 2 and the cover is extended, and the sealing between the cover mounting flange 2 and the cover is further improved. At the same time, the arc support plate 24 can provide additional support for the cover, thereby improving the connection stability between the cover and the cover mounting flange 2.

[0041] As a further improvement, a plurality of second threaded blind holes 25 are provided on the end surface of the cover mounting flange 2 away from the flight tube base 1 .

[0042] By arranging a second threaded blind hole 25 on the end face of the cover mounting flange 2 away from the flight tube base 1, and cooperating with the through hole 21, the axial connecting bolts along the opening of the cover mounting flange 2 can be connected from two different directions at the same time, and the threaded connection end can exist in the cover mounting flange 2 and the cover at the same time, further improving the connection stability between the cover and the cover mounting flange 2.

[0043] In order to facilitate the installation of the detector, as a further improvement, the detector installation port 13 is connected to the cover installation flange 2 through an extension tube 3.

[0044] An installation structure such as a mounting frame for installing the detector may be provided in the extension tube 3 .

[0045] Example 2

[0046] Reference Figure 1 , Figure 3 As shown, in order to facilitate the installation of the utility model on other structures, this embodiment proposes an improvement based on embodiment 1, and a docking flange 4 is provided on the ion flow inlet 11, and mounting planes 41 are respectively provided at the opposite ends of the docking flange 4, and the mounting plane 41 and the locking plane 22 of the cover mounting flange 2 arranged on the reflector mounting port 12 are parallel to each other.

[0047] The docking flange 4 is provided to facilitate the connection of the ion flow inlet 11 to other structures.

[0048] By arranging the mounting plane 41 and the locking plane 22 of the cover mounting flange 2 arranged on the reflector mounting opening 12 to be parallel to each other, it is convenient to install the flight tube base 1 on the planar structure.

[0049] In order to facilitate the connection and installation of the reflector in the flight tube base 1 , as a further improvement, a reflector connecting flange 5 is provided at one end of the flight tube base 1 close to the reflector installation opening 12 .

[0050] As a further improvement, the axis of the opening of the reflector connecting flange 5 and the axis of the opening of the cover mounting flange 2 arranged on the detector mounting port 13 are offset to form a 90° angle, and any mounting plane 41 is arranged within the angle.

[0051] By arranging the reflector connecting flange 5 and the cover mounting flange 2 arranged on the detector mounting opening 13 at the two ends of the mounting plane 41 respectively, the overall stability of the utility model during use is improved.

[0052] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A time-of-flight mass spectrometer flight tube, comprising a cover, characterized in that: Also includes: A flight tube substrate, wherein two ends of the flight tube substrate along the length direction are respectively provided with an ion flow inlet and a reflector mounting port, and one end of the flight tube substrate close to the ion flow inlet is provided with a detector mounting port; Two cover mounting flanges, the two cover mounting flanges are respectively arranged on the reflector mounting port and the detector mounting port, a plurality of through holes are arranged on the end surface of the cover mounting flange away from the flight tube base, locking planes are respectively arranged at opposite ends of the cover mounting flange, the locking planes are perpendicular to the axis of the through hole, and a plurality of first threaded blind holes are arranged on the locking planes.

2. The time-of-flight mass spectrometer flight tube according to claim 1, characterized in that: The end surface of the cover mounting flange away from the flight tube base extends in a direction away from the cover mounting flange to form a plurality of arcuate support plates, and the plurality of arcuate support plates are evenly spaced along the circumference of the opening of the cover mounting flange.

3. The time-of-flight mass spectrometer flight tube according to claim 1, characterized in that: A plurality of second threaded blind holes are arranged on the end surface of the cover mounting flange away from the flight tube base.

4. The time-of-flight mass spectrometer flight tube according to claim 1, characterized in that: The detector mounting port is connected to the cover mounting flange through an extension tube.

5. The time-of-flight mass spectrometer flight tube according to claim 1, characterized in that: The ion flow inlet is provided with a docking flange, and the opposite ends of the docking flange are respectively provided with mounting planes, and the mounting planes and the locking planes of the cover mounting flange arranged on the reflector mounting port are parallel to each other.

6. The time-of-flight mass spectrometer flight tube according to claim 5, characterized in that: A reflector connecting flange is provided at one end of the flight tube base body close to the reflector mounting opening.

7. The time-of-flight mass spectrometer flight tube according to claim 6, characterized in that: The axis of the opening of the reflector connecting flange and the axis of the opening of the cover mounting flange arranged on the detector mounting port are offset to form a 90° angle, and any one of the mounting planes is arranged within the angle.

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