High-pressure connecting device for mass spectrometer

Abstract

The utility model belongs to the mass spectrum technology, and particularly relates to a high-voltage connecting device for a mass spectrometer, which comprises a male head, a female head and a high-voltage wire connected with the male head. The insulating material is filled in the shielding box; the female head is arranged on the first parts, and the plurality of first parts are arranged in the shielding box and are fixed on the side wall of the shielding box; the male head is arranged on the second part, the second part is inserted into the first part, and the male head is connected with the female head. The mass spectrometer high-pressure connector has the advantages of being stable and reliable in plugging and unplugging and the like, and is used for mass spectrometer high-pressure connection.

Description

TECHNICAL FIELD

[0001] The utility model relates to mass spectrometry technology, especially for mass spectrometer's high pressure connecting device. BACKGROUND

[0002] Time-of-flight mass spectrometer is the equipment that uses mass spectrum to analyze the mass of different nucleic acid molecule fragments and carries out identification and quantification, obtains the accurate molecular weight of the substance by measuring the flight time of ions in the flight tube, can provide the information of the structure of the substance, is one of important tools for understanding the structure of organic matter, and is currently widely applied in the fields of organic matter synthesis, environment, forensic science and pharmacy.

[0003] The high voltage system is one of the core modules of the time-of-flight mass spectrometer. The sample is desorbed / ionized to generate ions by laser sputtering in a high vacuum environment, is accelerated by a double-field acceleration electric field formed by a target plate, an extraction electrode and a grounded plate, reaches a detector after being focused by an electrostatic lens to generate a signal, and the signal is collected by a collection card and transmitted to a computer for analysis and processing.

[0004] In the time-of-flight mass spectrometer, convenient and accurate control of the voltage values of various devices in the high voltage module has a greater influence on the accuracy of the final detection result. Since the high voltage module is composed of a large number of devices, the wiring is complex, and regular maintenance is required. How to conveniently and quickly maintain the high voltage module without affecting the reliability of the high voltage module devices and wiring is an important measure to ensure the performance of the mass spectrometer, improve the maintenance efficiency and reduce the maintenance cost.

[0005] The wiring of the high voltage module of the time-of-flight mass spectrometer usually adopts an integrated structure, that is, the high voltage cables of the high voltage power supply, the high voltage switch and the high voltage loading parts are connected together in the form of insulating glue potting. The potting scheme takes a long time, generally more than 24 hours; the operation is difficult and requires special training; it cannot be disassembled; and when the cable is arranged, the high voltage line is easily pulled and stressed, which causes air leakage at the potting place, destroys the high vacuum environment of the mass spectrometer and causes failure. UTILITY MODEL CONTENTS

[0006] To solve the above problems in the prior art, the utility model provides a high voltage connecting device for a mass spectrometer.

[0007] The utility model aims at the following technical scheme:

[0008] A high voltage connecting device for a mass spectrometer, comprising a male head, a female head and a high voltage cable, the high voltage cable being connected to the male head, the high voltage connecting device further comprising:

[0009] A shielding box and an insulating material, the insulating material being filled in the shielding box;

[0010] The first part, the female head is arranged on the first part, a plurality of first parts are arranged in the shielding box and fixed on the side wall of the shielding box;

[0011] The second part, the male head is arranged on the second part, the second part is inserted into the first part, and the male head is connected with the female head.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. By utilizing the design of the first part and the second part, the high-voltage connection process is convenient, fast and repeated multiple times, and the reliability of the high-voltage cable in the maintenance process is improved.

[0014] 2. By utilizing the shielding box and the filling of the insulating material, the disadvantages of long filling time and large operation difficulty of the existing common method are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] The disclosure of the utility model will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that: these drawings are only used for illustrating the technical scheme of the utility model, and are not intended to limit the protection scope of the utility model. In the drawings:

[0016] Figure 1 It is a structure schematic view of the utility model for mass spectrometer high-voltage connecting device;

[0017] Figure 2 It is a sectional structure schematic view of the utility model for mass spectrometer high-voltage connecting device;

[0018] Figure 3 It is a sectional structure schematic view of the utility model first part;

[0019] Figure 4 It is a sectional structure schematic view of the utility model second part;

[0020] Figure 5 It is a local structure schematic view of the utility model second part. DETAILED DESCRIPTION

[0021] Figures 1-5The optional specific embodiments described in the following description and illustrated in the accompanying drawings enable those skilled in the art to practice and realize the present application. One skilled in the art will appreciate that the specific embodiments described are merely illustrative of the present application and should not be construed as limiting the present application in any way. The description and drawings are illustrative of the present application and are not intended to limit the present application in any way. The scope of the present application is defined by the appended claims and their equivalents.

[0022] Embodiment 1.

[0023] A high-voltage connection device for a mass spectrometer, as shown in Figures 1-2 comprises.

[0024] A male head 32, a female head 33, and a high-voltage line 31 connecting the male head 32.

[0025] A shielding box 11 and an insulating material 21 filled in the shielding box 11.

[0026] The female head 33 is arranged on the first part 42, a plurality of first parts 42 are arranged in the shielding box 11 and fixed on the side wall 111 of the shielding box 11.

[0027] The male head 32 is arranged on the second part 41, the second part 41 is inserted into the first part 42, and the male head 32 is connected to the female head 33.

[0028] In order to fix the female head 33 and facilitate the insertion and extraction between the first part 42 and the second part 41, further, as shown in Figure 3 the first part 42 comprises.

[0029] The second protection piece 421 is open at both ends, one end of the female head 33 is outside the second protection piece 421, and the other end is arranged in the second protection piece 421, and the first protection piece 421 and the male head 32 are inserted into the second protection piece 421.

[0030] The second fixing piece 422 is used to fix the female head 33 on the second protection piece 421.

[0031] The second connecting piece 423 connects the second protection piece 421 and is fixed on the side wall 111; the second connecting piece 423 is connected to the first connecting piece 413.

[0032] In order to fix the male head 32 and facilitate the insertion and extraction, further, as shown in Figures 4-5 the second part 41 comprises:

[0033] The first protection member 411 is open at both ends, the male head 32 is located outside the first protection member 411 at one end, and the other end is arranged in the first protection member 411, and the high-voltage wire 31 is arranged in the first protection member 411 and connected with the male head 32.

[0034] The joint 412 is arranged outside the high-voltage wire 31 and the first protection member 411 and connected with the first protection member 411.

[0035] The first fixing member 414 is arranged outside the high-voltage wire 31 extending from the joint 412 and connected with the joint 412.

[0036] The first connecting member 413 is arranged outside the joint 412 and blocked by the joint 412.

[0037] In order to fix the high-voltage wire 31, further, Figure 5 as shown, the inner wall of the joint 412 has a convex 415 blocking the first protection member, and correspondingly, the first part 41 further comprises:

[0038] The conical head 416 is arranged outside the high-voltage wire 31.

[0039] The conical head 416, the silica gel tube 417 and the cylindrical head 418 are arranged outside the high-voltage wire 31 in sequence, and the conical head 416, the silica gel tube 417 and the cylindrical head 418 are pressed between the convex 415 and the first fixing member 414.

[0040] In order to prevent the high-voltage wire 31 from moving in the axial and radial directions, further, the silica gel tube 417 comprises a radial part 4171 and an axial part 4172, the high-voltage wire 31 comprises a larger diameter part 311 and a smaller diameter part 312, the radial part 4171 allows the smaller diameter part 312 to pass through and is pressed between the conical head 416 and the larger diameter part 311, and the axial part 4172, the cylindrical head 418 and the first fixing member 414 are arranged outside the larger diameter part 311.

[0041] In order to realize stable connection, further, the first protection member 411 and one end of the joint 412 are connected through threads, and the first fixing member 414 and the other end of the joint 412 are connected through threads.

[0042] Embodiment 2.

[0043] According to the application example of the high-voltage connection device for a mass spectrometer in Embodiment 1 of the utility model.

[0044] In the application example, as shown in Figures 1-2As shown, the shielding box 11 has a hollow cubic structure, including side walls 111. The insulating material 21 is an insulating sealant, which fills the shielding box 11.

[0045] Seven first parts 42 are disposed inside the shielding box 11 and fixed to the side wall 111. The second part 41 is inserted into the first part 41, so that the high voltage line 31, the male connector 32 and the female connector 33 are connected.

[0046] like Figure 3 As shown, the second protective member 421 is made of PTFE material, and the inner diameter of one end opening is smaller than the inner diameter of the other end opening. One end of the female head 33 passes through one end opening, and the other end is located inside the second protective member 421. The end has a groove that allows the male head 32 to be inserted, but is blocked by one end opening. The second fixing member 422 is a nut, which is fixed to the female head extending out of the second protective member 421, thereby fixing the female head 33 to the second protective member 421. The second protective member 421 is fixed to the second connecting member 423, which is a flange seat, fixed to the side wall 111. The outer wall of the second connecting member 423 has external threads.

[0047] like Figures 4-5 As shown, in the second part 41, the first protective member 411 is made of PTFE material, and the inner diameter of one end opening is smaller than the inner diameter of the other end opening. One end of the male connector 32 passes through one end opening, and the other end is inside the first protective member 411. The end has a groove that allows the high-voltage line 31 to be inserted, and is blocked by one end opening.

[0048] The connector 412 is made of stainless steel, and the inner walls of both open ends have internal threads. The inner walls of the two internal threads have protrusions 415. One end of the first protective member 411 extends into the connector 42, is connected by threads, and is blocked by the protrusions 415.

[0049] The high-voltage wire 31 includes a larger diameter portion 311 and a smaller diameter portion 312. A conical head 416 is securely fitted over the smaller diameter portion 312 and clamped between a protrusion 415 and the larger diameter portion 311. The silicone tube 417 includes a radial portion 4171 and an axial portion 4172. The radial portion 4171 allows the smaller diameter portion 312 to pass through and is pressed between the conical head 416 and the larger diameter portion 311. The axial portion 4172, the cylindrical head 418, and the first fixing member 414 are disposed outside the larger diameter portion 311 and are pressed by the first fixing member 414. The external thread of the first fixing member 414 matches the internal thread of the connector 412, securing it to the connector 412 and pressing the cylindrical head 418, the silicone tube 417, and the conical head 416.

[0050] In view of the relative fixation of the conical head 416 and the smaller diameter portion 312 of the high-voltage line 31, the high-voltage line 31 remains fixed in both its radial and axial directions in the event that the conical head 416 is pressed.

[0051] The working mode of the connecting device of the present embodiment is as follows:

[0052] When connection is required, the operator inserts the male head 32 into the second protective member 421 of the first part 42, with the end of the male head 32 inserted into the groove at the end of the female head 33.

[0053] The first connecting member 413 is rotated in the forward direction, thereby fixing the first connecting member 413 to the second connecting member 423, thereby fixing the male head 32 to the female head 33 within the second protective member 421, achieving electrical connection.

[0054] When the first part 41 needs to be pulled out, the first connecting member 413 is rotated in the reverse direction, thereby separating the first connecting member 413 from the second connecting member 423, and the first part 41 is pulled outwards, causing the male head 32 and the female head 33 to separate.

Claims

1. A high voltage connection device for a mass spectrometer, comprising a male head, a female head and a high voltage wire, the high voltage wire connecting the male head; characterized in that, The high-voltage connecting device further comprises: a shielding box and an insulating material filled in the shielding box; a first part on which the female head is arranged, a plurality of first parts arranged in the shielding box and fixed on the side wall of the shielding box; a second part on which the male head is arranged, the second part inserted into the first part, and the male head connected to the female head.

2. The high voltage connection for a mass spectrometer of claim 1, wherein, The second part comprises: a first protection piece with both ends open, one end of the male head outside the first protection piece and the other end arranged in the first protection piece, and the high-voltage wire arranged in the first protection piece and connected to the male head; a joint arranged outside the high-voltage wire and the first protection piece and connected to the first protection piece; a first fixing piece arranged outside the high-voltage wire extending out of the joint and connected to the joint; a first connecting piece arranged outside the joint and blocked by the joint.

3. A high voltage connection for a mass spectrometer as claimed in claim 2, characterised in that, The first part comprises: a second protection piece with both ends open, one end of the female head outside the second protection piece and the other end arranged in the second protection piece, and the first protection piece and the male head inserted into the second protection piece; a second fixing piece for fixing the female head on the second protection piece; a second connecting piece connected to the second protection piece and fixed on the side wall, and the first connecting piece connected to the second connecting piece.

4. A high pressure connection for a mass spectrometer as claimed in claim 3, characterised in that, The first connecting piece has an external thread, and the second connecting piece has an internal thread matched with the external thread.

5. The high voltage connection for a mass spectrometer of claim 3, wherein, The second connecting piece adopts a flange seat.

6. The high voltage connection for a mass spectrometer of claim 3, wherein, The second fixing piece adopts a nut.

7. A high voltage connection for a mass spectrometer as claimed in claim 2, characterised in that, An inner wall of the joint has a protrusion blocking the first protection piece.

8. A high voltage connection for a mass spectrometer as claimed in claim 7, characterised in that, The first part further comprises: a conical head arranged outside the high-voltage wire; a silica gel tube and a cylindrical head arranged outside the high-voltage wire in sequence with the first fixing piece, and the conical head, the silica gel tube and the cylindrical head squeezed between the protrusion and the first fixing piece.

9. A high voltage connection for a mass spectrometer as claimed in claim 8, characterised in that, The silica gel tube comprises a radial part and an axial part, the high-voltage wire comprises a larger diameter part and a smaller diameter part, the radial part allows the smaller diameter part to pass through and is squeezed between the conical head and the larger diameter part, and the axial part, the cylindrical head and the first fixing piece are arranged outside the larger diameter part.

10. The high voltage connection for a mass spectrometer of claim 2, wherein, The first protection piece and one end of the joint are connected by threads, and the first fixing piece and the other end of the joint are connected by threads.

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