Wave dispersive spectrometer capable of rapidly adding liquid helium

Abstract

The utility model relates to the technical field of nuclear magnetic resonance spectrometer, in particular to a wavelength dispersive spectrometer capable of quickly adding liquid helium, which comprises a wavelength dispersive spectrometer body, a plurality of supporting legs are fixedly connected to the lower surface of the wavelength dispersive spectrometer body, a sample inlet is arranged on the upper surface of the wavelength dispersive spectrometer body, an auxiliary device is arranged on the surface of the wavelength dispersive spectrometer body, and the auxiliary device is connected with the liquid helium. The auxiliary device comprises a filling block fixed on the wavelength dispersive spectrometer body, three groups of filling cavities are formed in the surface of the filling block, and a pump body is fixedly connected to the surface of the wavelength dispersive spectrometer body. Liquid nitrogen can be added at multiple positions at the same time, and compared with a single-channel adding mode, the amount of the liquid nitrogen injected into the spectrometer body in unit time can be remarkably increased, so that the liquid nitrogen adding speed is greatly increased, the time needed for adding the liquid nitrogen is shortened, and the use efficiency of the spectrometer is improved.

Description

Technical Field

[0001] This utility model relates to the field of nuclear magnetic resonance spectrometer technology, and in particular to a spectrometer that can rapidly add liquid helium. Background Technology

[0002] Nuclear magnetic resonance (NMR) spectrometry is an analytical instrument that uses the nuclear magnetic resonance phenomenon to study the structure and properties of matter. Atomic nuclei have spin angular momentum and magnetic moments. In a static magnetic field, the nuclear spin magnetic moment interacts with the static magnetic field, causing the energy levels of the atomic nucleus to split. When an atomic nucleus in a static magnetic field is irradiated with a radio frequency pulse of a specific frequency, the atomic nucleus absorbs radio frequency energy and transitions from a low energy level to a high energy level, producing the NMR phenomenon. After the radio frequency pulse stops, the atomic nucleus returns from the high energy level to the low energy level, releasing the absorbed energy and generating a radio frequency signal. By detecting and analyzing these signals, information about the chemical environment and molecular structure of the atomic nucleus can be obtained.

[0003] In daily work, it has been found that when adding liquid nitrogen to existing nuclear magnetic resonance spectrometers, the connecting tank in the liquid nitrogen tank is usually connected to the spectrometer, and then the valve of the liquid nitrogen tank is opened to add liquid nitrogen. During the addition process, as liquid nitrogen flows out, the pressure inside the liquid nitrogen tank gradually decreases, and the pressure difference between the spectrometer and the liquid nitrogen tank continuously decreases. Due to the change in pressure value, the overall speed of adding liquid nitrogen slows down, thus affecting efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problems of slow liquid nitrogen addition and low efficiency in existing spectrometers, and to propose a spectrometer that can quickly add liquid helium.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a spectrometer capable of rapidly adding liquid helium, comprising a spectrometer body, multiple legs fixedly connected to the lower surface of the spectrometer body, a sample inlet provided on the upper surface of the spectrometer body, an auxiliary device provided on the surface of the spectrometer body, the auxiliary device including a filling block fixedly attached to the spectrometer body, three sets of filling chambers opened on the surface of the filling block, a pump body fixedly connected to the surface of the spectrometer body, a valve body installed at the output end of the pump body, an output pipe fixedly connected to the other end of the valve body, the other end of the output pipe communicating with the filling chamber, an input pipe fixedly connected to the input end of the pump body, a liquid storage tank connecting pipe provided on one side of the input pipe, a quick-connect assembly provided between the input pipe and the liquid storage tank connecting pipe, through the above components, the liquid storage tank connecting pipe and the input pipe can be quickly connected by the quick-connect assembly, then the pump body and valve body are opened, the pump body draws in liquid nitrogen through the input pipe, and then discharges it into the three sets of filling chambers through the valve body and the output pipe, realizing a rapid addition operation.

[0006] Preferably, each of the filling chambers is arranged in a trumpet shape. Through the above-mentioned components, the trumpet-shaped filling chamber can improve the liquid nitrogen addition rate.

[0007] Preferably, the output pipe includes a main pipe and three branch pipes. The three branch pipes are fixed on the main pipe and are respectively connected to three sets of filling chambers. Through the above components, the three sets of branch pipes can deliver liquid nitrogen to different filling chambers, thereby realizing multi-position addition and improving the addition speed.

[0008] Preferably, the quick-connect assembly includes two insert blocks fixed to the surface of the liquid storage tank connecting pipe. The surface of the input pipe has two slots, and the insert blocks are inserted into the inner walls of the slots. A retaining ring is rotatably connected to the inner wall of the input pipe. The surface of the insert blocks has a retaining groove, and the retaining ring is engaged with the inner wall of the retaining groove. The surface of the retaining ring has a groove for the insert blocks to pass through. With the above components, when making a connection, the insert blocks are inserted into the slots. After the insert blocks pass through the groove on the surface of the retaining ring, the retaining ring is rotated, and the retaining ring engages with the groove on the surface of the insert blocks, thus achieving a quick connection.

[0009] Preferably, a spring is fixedly connected to the side of the retaining ring corresponding to the inner wall of the input tube. There are two springs. Through the above-mentioned components, the springs can control the retaining ring to reset, ensuring the stability of the retaining ring.

[0010] Preferably, the surface of the retaining ring is fixedly connected with protrusions, and there are multiple protrusions. Through the above-mentioned components, the protrusions facilitate the control of the retaining ring to rotate, thereby improving ease of use.

[0011] Preferably, a gasket is fixedly connected to one end of the input tube, and the gasket is through which the insertion block passes. Through the above-mentioned components, the gasket can improve the overall connection and sealing effect.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting up an auxiliary device, the pump body, input pipe, filling block, three sets of filling chambers, output pipe and liquid storage tank connecting pipe cooperate with each other to realize the simultaneous addition of liquid nitrogen at multiple positions. Compared with the single-channel addition method, it can significantly increase the amount of liquid nitrogen injected into the spectrometer body per unit time, thereby greatly improving the liquid nitrogen addition speed, reducing the time required to add liquid nitrogen, and improving the efficiency of the instrument.

[0014] 2. In this utility model, by setting a quick-connect device, the connection between the liquid storage tank connecting pipe and the input pipe can be quickly connected. The operation is simple and convenient, saving the time required for connection and improving the overall work efficiency. Attached Figure Description

[0015] Figure 1A three-dimensional structural diagram of a spectrometer capable of rapidly adding liquid helium is provided for this utility model.

[0016] Figure 2 This invention provides a cross-sectional view of the filling block in an auxiliary device for a spectrometer capable of rapidly adding liquid helium.

[0017] Figure 3 This invention provides a schematic diagram of the explosive structure of a quick-connect component of a spectrometer capable of rapidly adding liquid helium.

[0018] Figure 4 This invention presents a schematic diagram of a partial explosion structure of a quick-connect device for a spectrometer capable of rapidly adding liquid helium.

[0019] Figure 5 This invention provides a cross-sectional structural schematic diagram of a quick-connect device for a spectrometer capable of rapidly adding liquid helium.

[0020] Legend:

[0021] 1. Spectrometer body; 2. Support leg; 3. Sample inlet; 4. Auxiliary device; 41. Filling block; 42. Output tube; 421. Main pipe; 422. Branch pipe; 43. Valve body; 44. Pump body; 45. Input pipe; 46. Storage tank connection pipe; 47. Quick-connect assembly; 471. Insert block; 472. Gasket; 473. Slot; 474. Snap ring; 475. Protrusion; 476. Groove; 477. Spring; 478. Slot; 48. Filling chamber. Detailed Implementation

[0022] Please see Figures 1-5 This utility model provides a technical solution: a spectrometer that can quickly add liquid helium, including a spectrometer body 1, a plurality of legs 2 fixedly connected to the lower surface of the spectrometer body 1, a sample inlet 3 provided on the upper surface of the spectrometer body 1, and an auxiliary device 4 provided on the surface of the spectrometer body 1.

[0023] Specifically, the auxiliary device 4 includes a filling block 41 fixed on the spectrometer body 1. The surface of the filling block 41 has three filling cavities 48. A pump body 44 is fixedly connected to the surface of the spectrometer body 1. A valve body 43 is installed at the output end of the pump body 44. An output pipe 42 is fixedly connected to the other end of the valve body 43. The other end of the output pipe 42 is connected to the filling cavity 48. An input pipe 45 is fixedly connected to the input end of the pump body 44. A liquid storage tank connecting pipe 46 is provided on one side of the input pipe 45. A quick-connect assembly 47 is provided between the input pipe 45 and the liquid storage tank connecting pipe 46.

[0024] In this implementation scheme: the storage tank connecting pipe 46 can be quickly connected to the input pipe 45 via the quick-connect assembly 47, and then the pump body 44 and valve body 43 are opened. The pump body 44 draws in liquid nitrogen through the input pipe 45, and then discharges it into the three sets of filling chambers 48 through the valve body 43 and the output pipe 42, thereby realizing a rapid addition operation.

[0025] Specifically, each filling chamber 48 is arranged in a trumpet shape, which can improve the liquid nitrogen addition rate.

[0026] Specifically, the output pipe 42 includes a main pipe 421 and three branch pipes 422. The three branch pipes 422 are fixed on the main pipe 421, and the three branch pipes 422 are respectively connected to three sets of filling chambers 48.

[0027] In this implementation scheme, three sets of branch pipes 422 can deliver liquid nitrogen to different filling chambers 48 respectively, thereby realizing multi-position addition and improving the addition speed.

[0028] Specifically, the quick-connect assembly 47 includes two inserts 471 fixed on the surface of the liquid storage tank connecting pipe 46. The surface of the input pipe 45 has two slots 473. The inserts 471 are inserted into the inner wall of the slots 473. The inner wall of the input pipe 45 is rotatably connected to a retaining ring 474. The surface of the inserts 471 has a retaining groove 478. The retaining ring 474 is engaged with the inner wall of the retaining groove 478. The surface of the retaining ring 474 has a groove 476 for the inserts 471 to pass through.

[0029] In this embodiment: When making a connection, the insert 471 is inserted into the slot 473. After the insert 471 passes through the groove 476 on the surface of the retaining ring 474, the retaining ring 474 is rotated and the retaining ring 474 is engaged in the slot 478 on the surface of the insert 471, thus achieving a quick connection.

[0030] Specifically, a spring 477 is fixedly connected to the side of the retaining ring 474 corresponding to the inner wall of the input tube 45, and there are two springs 477.

[0031] In this implementation scheme: the spring 477 can control the retaining ring 474 to reset, ensuring the stability of the retaining ring 474.

[0032] Specifically, the surface of the retaining ring 474 is fixedly connected with a protrusion 475. There are multiple protrusions 475. The protrusions 475 facilitate the control of the retaining ring 474 to rotate, thereby improving ease of use.

[0033] Specifically, a gasket 472 is fixedly connected to one end of the input tube 45. The gasket 472 allows the insertion block 471 to pass through, and the gasket 472 can improve the overall connection sealing effect.

[0034] Working principle: When liquid nitrogen needs to be added, connect the storage tube to the input tube 45, insert the plug 471 into the slot 473, and after the plug 471 passes through the groove 476 on the surface of the retaining ring 474, release the retaining ring 474. The spring 477 drives the retaining ring 474 to rotate and reset, and the retaining ring 474 is engaged in the groove 478 on the surface of the plug 471, realizing a quick connection. The gasket 472 seals the connection. Then, open the pump body 44 and the valve body 43. The pump body 44 draws in liquid nitrogen through the input tube 45 and then inputs it into the valve body 43 and the output tube 42. The three branch tubes 422 in the output tube 42 can discharge liquid nitrogen into three sets of horn-shaped filling chambers 48. The three sets of horn-shaped filling chambers 48 add liquid nitrogen to the spectrometer body 1 respectively, realizing a quick addition operation.

Claims

1. A spectrometer capable of rapidly adding liquid helium, comprising a spectrometer body (1), characterized in that: The lower surface of the spectrometer body (1) is fixedly connected to multiple support legs (2), the upper surface of the spectrometer body (1) is provided with a sample inlet (3), the surface of the spectrometer body (1) is provided with an auxiliary device (4), the auxiliary device (4) includes a filling block (41) fixed on the spectrometer body (1), the surface of the filling block (41) is provided with three sets of filling cavities (48), and the surface of the spectrometer body (1) is fixedly connected to a pump body (44). The pump body (44) is equipped with a valve body (43) at the output end. The other end of the valve body (43) is fixedly connected to an output pipe (42). The other end of the output pipe (42) is connected to the filling chamber (48). The pump body (44) is fixedly connected to an input pipe (45). A liquid storage tank connecting pipe (46) is provided on one side of the input pipe (45). A quick-connect assembly (47) is provided between the input pipe (45) and the liquid storage tank connecting pipe (46).

2. The spectrometer capable of rapidly adding liquid helium according to claim 1, characterized in that: Each of the injection chambers (48) is arranged in a trumpet shape.

3. The spectrometer capable of rapidly adding liquid helium according to claim 1, characterized in that: The output pipe (42) includes a main pipe (421) and three branch pipes (422). The three branch pipes (422) are fixed on the main pipe (421) and are respectively connected to three sets of filling chambers (48).

4. A spectrometer capable of rapidly adding liquid helium according to claim 1, characterized in that: The quick-connect assembly (47) includes two inserts (471) fixed on the surface of the liquid storage tank connecting pipe (46). The surface of the input pipe (45) has two slots (473). The inserts (471) are inserted into the inner wall of the slots (473). The inner wall of the input pipe (45) is rotatably connected to a retaining ring (474). The surface of the inserts (471) has a retaining groove (478). The retaining ring (474) is engaged with the inner wall of the retaining groove (478). The surface of the retaining ring (474) has a groove (476) through which the inserts (471) pass.

5. A spectrometer capable of rapidly adding liquid helium according to claim 4, characterized in that: The retaining ring (474) is fixedly connected to a spring (477) on the side corresponding to the inner wall of the input tube (45), and there are two springs (477).

6. A spectrometer capable of rapidly adding liquid helium according to claim 4, characterized in that: The surface of the retaining ring (474) is fixedly connected with a protrusion (475), and there are multiple protrusions (475).

7. A spectrometer capable of rapidly adding liquid helium according to claim 4, characterized in that: One end of the input tube (45) is fixedly connected to a gasket (472), through which the insert (471) passes.

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