Superconducting magnetic resonance imager magnet state monitoring alarm device

Abstract

The utility model discloses a superconducting magnetic resonance imager magnet state monitoring alarm device, relates to the technical field of superconducting magnets, and aims to solve the problems that all positions of a superconducting magnetic resonance imager cannot be monitored in real time, whether a superconducting magnet is in a quench state cannot be known in time and the practicability is low in the background technology. According to the scheme, the device comprises a mounting frame, the mounting frame comprises a top plate arranged above the superconducting magnetic resonance imager, and the top of the top plate is provided with an adjusting mechanism; the adjusting mechanism comprises a mounting plate fixedly arranged on the outer wall of the top of the top plate, an adjusting motor connected to the outer wall of one side of the mounting plate through a bolt, a screw rod connected to the outer wall of one end of an output shaft of the adjusting motor through a coupler, a connecting block slidably arranged on the outer wall of the screw rod in a sleeving mode and a threaded barrel. According to the utility model, the magnetic field intensity of each position of the superconducting magnetic resonance imager can be detected in real time, the situation that whether the superconducting magnet quench phenomenon occurs or not cannot be known in time is prevented, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of superconducting magnets, in particular to a magnet state monitoring and alarm device for a superconducting magnetic resonance imaging instrument. Background Art

[0002] A superconducting magnet refers to an electromagnet whose coil is made of a type II superconductor with a high transition temperature and a particularly high critical magnetic field at low temperature. Its main characteristics are that there is no electrical loss caused by wire resistance, and no magnetic loss caused by the existence of an iron core. Superconductors have three basic characteristics: zero resistance, Meissner effect, and Josephson effect. Critical temperature, critical magnetic field, and critical current are three important parameters of superconductors. If any of the temperature, magnetic field, and current exceeds the critical value, the superconducting magnet will undergo a phase change and become a normal conductor. This process is called quenching.

[0003] During the operation of a superconducting magnetic resonance imager, it is necessary to monitor the operating state of a superconducting magnet inside the superconducting magnetic resonance imager to prevent the superconducting magnet from being in a quenched state. Based on the prior art, when monitoring the operating state of the superconducting magnet, it is impossible to monitor various positions of the superconducting magnetic resonance imager in real time, and it is impossible to know in time whether the superconducting magnet is in a quenched state, which has low practicality. Utility Model Content

[0004] The utility model provides a superconducting magnetic resonance imaging device magnet state monitoring alarm device, which solves the problem that the prior art cannot monitor various positions of the superconducting magnetic resonance imaging device in real time when monitoring the operating state of the superconducting magnet, cannot timely know whether the superconducting magnet is in a quenched state, and has low practicality.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A superconducting magnetic resonance imager magnet state monitoring and alarm device comprises a mounting frame, the mounting frame comprises a top plate arranged above the superconducting magnetic resonance imager, an adjusting mechanism is arranged on the top of the top plate, the adjusting mechanism comprises a mounting plate fixedly arranged on the outer wall of the top plate, an adjusting motor connected to the outer wall of one side of the mounting plate by bolts, a screw connected to the outer wall of one end of the output shaft of the adjusting motor by a coupling, a connecting block slidably sleeved on the outer wall of the screw and a threaded barrel screwed on the outer wall of the screw, a limiting mechanism is arranged at the bottom of the top plate, the limiting mechanism comprises two mounting blocks respectively fixedly arranged on the outer wall of the bottom of the top plate and a limiting block of a "T"-shaped structure, a mounting mechanism is arranged at the bottom of the limiting block, the mounting mechanism comprises a mounting frame fixedly arranged on the outer wall of the bottom of the limiting block, a mounting cover connected to the outer wall of one side of the mounting frame by bolts, a magnetic field strength detector is arranged in the mounting frame, and an audible and visual alarm is arranged on one side of the mounting cover.

[0007] Preferably, a slideway is formed on the outer wall of the top of the top plate along the length direction, and support columns are connected to the outer walls of the four corners at the bottom of the top plate through bolts.

[0008] Preferably, a fixing plate is fixedly arranged on the outer wall of the top of the top plate, one end of the screw rod is connected to the outer wall of one side of the fixing plate through a bearing, the lower part of the connecting block is slidably installed in the slideway, and the threaded cylinder penetrates and is fixedly arranged on the outer wall of the connecting block.

[0009] Preferably, the two mounting blocks form a limiting groove with an inverted "convex" structure therebetween, and the limiting block is slidably installed in the limiting groove.

[0010] Preferably, the top of the mounting frame abuts against the outer walls of the bottoms of the two mounting blocks, and a fixing cover is connected to the outer wall of one side of the mounting frame through bolts.

[0011] Preferably, the magnetic field intensity detector is embedded in the mounting frame, and both sides of the magnetic field intensity detector abut against the outer walls of one side of the fixing cover and the mounting cover respectively, and the sound and light alarm is connected to the outer wall of one side of the mounting cover through bolts.

[0012] Through the above scheme, by adjusting the intermittent forward and reverse rotation of the output shaft of the motor, the screw rod is driven to rotate. The screw rod drives the threaded cylinder and the connecting block to move along the slideway, and then drives the limiting block to move along the limiting groove formed by the two mounting blocks, and further drives the mounting frame, the magnetic field intensity detector and the sound and light alarm to move. The probe of the magnetic field intensity detector monitors the magnetic field intensity of the superconducting magnet in the superconducting magnetic resonance imaging device in real time. When the magnetic field intensity of the superconducting magnet changes greatly, the sound and light alarm emits red light and gives an alarm.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By adjusting the intermittent forward and reverse rotation of the output shaft of the motor, the screw rod is driven to rotate. The screw rod drives the threaded cylinder and the connecting block to move along the slideway, and then drives the limiting block to move along the limiting groove formed by the two mounting blocks, and further drives the mounting frame, the magnetic field intensity detector and the sound and light alarm to move. The probe of the magnetic field intensity detector monitors the magnetic field intensity of the superconducting magnet in the superconducting magnetic resonance imaging device in real time. When the magnetic field intensity of the superconducting magnet changes greatly, the sound and light alarm emits red light and gives an alarm, which can detect the magnetic field intensity at each position of the superconducting magnetic resonance imaging device in real time, prevent the failure to timely know whether the superconducting magnet has a quench phenomenon, and improve the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic diagram of the overall front view structure of a superconducting magnetic resonance imaging device magnet state monitoring and alarm device proposed by the present utility model.

[0016] Figure 2Schematic diagram of the overall front sectional structure of a magnet status monitoring and alarming device for a superconducting magnetic resonance imaging instrument proposed by the present utility model.

[0017] Figure 3 Schematic diagram of the front view structure of the mounting rack of a magnet status monitoring and alarming device for a superconducting magnetic resonance imaging instrument proposed by the present utility model.

[0018] Figure 4 Schematic diagram of the front view structure of the adjusting mechanism of a magnet status monitoring and alarming device for a superconducting magnetic resonance imaging instrument proposed by the present utility model.

[0019] Figure 5 Schematic diagram of the front view structure of the limiting mechanism of a magnet status monitoring and alarming device for a superconducting magnetic resonance imaging instrument proposed by the present utility model.

[0020] Figure 6 Schematic diagram of the front view structure of the mounting mechanism of a magnet status monitoring and alarming device for a superconducting magnetic resonance imaging instrument proposed by the present utility model.

[0021] In the figure: 1. Mounting rack; 101. Top plate; 102. Support column; 2. Adjusting mechanism; 201. Mounting plate; 202. Adjusting motor; 203. Screw rod; 204. Fixed plate; 205. Connecting block; 206. Threaded cylinder; 3. Limiting mechanism; 301. Mounting block; 302. Limiting block; 4. Mounting mechanism; 401. Mounting frame; 402. Fixed cover; 403. Mounting cover; 5. Magnetic field intensity detector; 6. Acousto-optic alarm. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Example 1, refer to Figures 1-3 , a magnet status monitoring and alarming device for a superconducting magnetic resonance imaging instrument, including a mounting rack 1. The mounting rack 1 includes a top plate 101 arranged above the superconducting magnetic resonance imaging instrument. A slideway is opened on the outer wall of the top of the top plate 101 along the length direction. Support columns 102 are bolted to the outer walls of the four corners at the bottom of the top plate 101, and the bottoms of the four support columns 102 are respectively fixed on the ground.

[0024] Example 2, refer to Figures 4-6, A superconducting magnetic resonance imaging magnet status monitoring and alarm device, further comprising an adjusting mechanism 2, a magnetic field intensity detector 5 and an audible and visual alarm 6. The adjusting mechanism 2 includes a mounting plate 201 fixedly provided on the outer wall of the top of the top plate 101, an adjusting motor 202 bolted to the outer wall of one side of the mounting plate 201, a screw rod 203 connected to the outer wall of one end of the output shaft of the adjusting motor 202 through a coupling, a connecting block 205 slidably sleeved on the outer wall of the screw rod 203, and a threaded cylinder 206 screwed on the outer wall of the screw rod 203. The adjusting motor 202 is a servo motor. A fixing plate 204 is fixedly provided on the outer wall of the top of the top plate 101. One end of the screw rod 203 is connected to the outer wall of one side of the fixing plate 204 through a bearing. The lower part of the connecting block 205 is slidably installed in the slideway. The threaded cylinder 206 penetrates and is fixedly provided on the outer wall of the connecting block 205. A limiting mechanism 3 is provided at the bottom of the top plate 101. The limiting mechanism 3 includes two mounting blocks 301 respectively fixedly provided on the outer wall of the bottom of the top plate 101 and a limiting block 302 in a "T" shape. The two mounting blocks 301 form a limiting groove in an inverted "convex" shape between them. The limiting block 302 is slidably installed in the limiting groove. An installation mechanism 4 is provided at the bottom of the limiting block 302. The installation mechanism 4 includes a mounting frame 401 fixedly provided on the outer wall of the bottom of the limiting block 302, and a mounting cover 403 bolted to the outer wall of one side of the mounting frame 401. The top of the mounting frame 401 abuts against the outer walls of the bottoms of the two mounting blocks 301. A fixing cover 402 is bolted to the outer wall of one side of the mounting frame 401. The magnetic field intensity detector 5 is embedded in the mounting frame 401. The two sides of the magnetic field intensity detector 5 respectively abut against the outer walls of one side of the fixing cover 402 and the mounting cover 403. The audible and visual alarm 6 is bolted to the outer wall of one side of the mounting cover 403.

[0025] Working principle: The output shaft of the adjusting motor 202 rotates forward and backward intermittently, driving the screw rod 203 to rotate. The screw rod 203 drives the threaded cylinder 206 and the connecting block 205 to move along the slideway, and then drives the limiting block 302 to move along the limiting groove formed by the two mounting blocks 301, and then drives the mounting frame 401, the magnetic field intensity detector 5 and the audible and visual alarm 6 to move. The probe of the magnetic field intensity detector 5 monitors the magnetic field intensity of the superconducting magnet in the superconducting magnetic resonance imaging device in real time. When the magnetic field intensity of the superconducting magnet changes greatly, the audible and visual alarm 6 emits red light and an alarm.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A superconducting magnetic resonance imaging device magnet state monitoring alarm device, comprising a mounting frame (1), characterized in that: The mounting frame (1) comprises a top plate (101) arranged above the superconducting magnetic resonance imager; An adjusting mechanism (2) is provided at the top of the top plate (101), and the adjusting mechanism (2) comprises a mounting plate (201) fixedly mounted on the outer wall of the top of the top plate (101), an adjusting motor (202) connected to the outer wall of one side of the mounting plate (201) by bolts, a screw rod (203) connected to the outer wall of one end of the output shaft of the adjusting motor (202) by a coupling, a connecting block (205) slidably sleeved on the outer wall of the screw rod (203), and a threaded barrel (206) screwed to the outer wall of the screw rod (203); A limiting mechanism (3) is provided at the bottom of the top plate (101), and the limiting mechanism (3) comprises two mounting blocks (301) respectively fixed on the outer wall of the bottom of the top plate (101) and a limiting block (302) of a "T"-shaped structure; The bottom of the limit block (302) is provided with a mounting mechanism (4), and the mounting mechanism (4) comprises a mounting frame (401) fixedly mounted on the outer wall of the bottom of the limit block (302), and a mounting cover (403) connected to the outer wall of one side of the mounting frame (401) by bolts; A magnetic field intensity detector (5) is provided in the installation frame (401), and an audible and visual alarm (6) is provided on one side of the installation cover (403).

2. A superconducting magnetic resonance imaging device magnet state monitoring alarm device according to claim 1, characterized in that: A slideway is provided on the top outer wall of the top plate (101) along the length direction, and support columns (102) are connected to the outer walls at the four corners of the bottom of the top plate (101) via bolts.

3. A superconducting magnetic resonance imaging device magnet state monitoring alarm device according to claim 1, characterized in that: A fixing plate (204) is fixedly arranged on the top outer wall of the top plate (101), and one end of the screw rod (203) is connected to the outer wall of one side of the fixing plate (204) through a bearing. The lower part of the connecting block (205) is slidably installed in the slideway, and the threaded tube (206) passes through and is fixedly arranged on the outer wall of the connecting block (205).

4. A superconducting magnetic resonance imaging device magnet state monitoring alarm device according to claim 1, characterized in that: The two installation blocks (301) mutually form a limiting groove with an inverted "convex" structure, and the limiting block (302) is slidably installed in the limiting groove.

5. A superconducting magnetic resonance imaging device magnet state monitoring alarm device according to claim 1, characterized in that: The top of the installation frame (401) is in contact with the outer walls of the bottoms of the two installation blocks (301), and a fixing cover (402) is connected to the outer wall of one side of the installation frame (401) via bolts.

6. A superconducting magnetic resonance imaging device magnet state monitoring alarm device according to claim 1, characterized in that: The magnetic field strength detector (5) is embedded in the installation frame (401), and two sides of the magnetic field strength detector (5) are respectively abutted against the outer wall of one side of the fixing cover (402) and the installation cover (403), and the sound and light alarm (6) is connected to the outer wall of one side of the installation cover (403) by bolts.

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