A liquid helium adding device for maintenance of nuclear magnetic resonance equipment

Abstract

The utility model relates to the technical field of maintenance and repair of nuclear magnetic resonance equipment, and discloses a liquid helium adding device for maintenance and repair of nuclear magnetic resonance equipment, comprising a frame, a liquid helium storage tank and a bottom plate, the frame is welded and fixed on the bottom plate, the liquid helium storage tank is placed on the bottom plate, the upper end of the frame is fixedly connected to a rotating lifting mechanism, a pipeline bin is arranged at the upper end of the rotating lifting mechanism, a fixing frame and a slide rail are arranged on the top wall of the inner cavity of the pipeline bin, a scissor-type telescopic frame is fixed at the lower end of the fixing frame, the scissor-type telescopic frame is controlled by an electric cylinder, a liquid helium filling pipe is arranged at the lower end of the scissor-type telescopic frame, a liquid inlet of the liquid helium filling pipe is connected with the liquid helium storage tank, and a liquid outlet of the liquid helium filling pipe is connected with a liquid helium gun head, and the utility model avoids the possible danger of manual operation by controlling the rotating lifting device and the scissor-type telescopic frame for filling and docking.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance and repair of nuclear magnetic resonance equipment, in particular to a liquid helium adding device for maintenance and repair of nuclear magnetic resonance equipment. Background Art

[0002] Nuclear magnetic resonance technology is a technology that uses a strong magnetic field to produce magnetic resonance with the human body to diagnose diseases. The generation of a strong magnetic field requires a superconducting state, and to achieve a superconducting state requires a refrigerant liquid helium. Therefore, nuclear magnetic resonance equipment needs to be regularly added with liquid helium for maintenance, and a liquid helium adding device is required.

[0003] For example, patent document CN216345382U discloses a nuclear magnetic resonance liquid nitrogen safety charging device, including a filling tank, a storage tank and a filling pipe for connecting the filling tank and the storage tank, both of which are provided with valves, and also includes: an upper box body and a lower box body connected by hinges, both ends of which are provided with clamping grooves, and the upper box body and the lower box body are sleeved on the filling pipe and the valve; this utility model is to install a sleeve on the filling pipe connecting the filling tank and the storage tank when filling liquid nitrogen The upper box body and the lower box body are used to sleeve the valves and the filling pipe on the filling tank and the storage tank into the upper box body and the lower box body, and the water pump circulates the water in the water box to spray the valves and the filling pipe to disperse the frost, effectively preventing the valves and the filling pipe from rupturing due to the long-term attachment of frost; however, the existing technology still has many shortcomings, for example: manual operation is required during the filling work, and the liquid helium filling pipe is connected to the filling port of the filling object equipment. The liquid helium and other substances overflowed during the installation process may cause harm to the staff. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid helium adding device for repairing and maintaining nuclear magnetic resonance equipment to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid helium adding device for repairing and maintaining nuclear magnetic resonance equipment, comprising a frame, a liquid helium storage tank and a base plate, the frame being welded and fixed to the base plate, the liquid helium storage tank being placed on the base plate, the upper end of the frame being fixedly connected to a rotating lifting mechanism, the upper end of the rotating lifting mechanism being provided with a pipeline bin, a fixed frame and a slide rail being installed on the top wall of the inner cavity of the pipeline bin, a scissor-type telescopic frame being fixed at the lower end of the fixed frame, a first electric cylinder being installed on the right side wall of the fixed frame, a slider being fixed at the telescopic end of the first electric cylinder, the slider being slidably installed on the slide rail, the lower end of the slider being fixedly connected to one of the hinge shafts of the scissor-type telescopic frame, a liquid helium filling pipe being provided at the lower end of the scissor-type telescopic frame, a liquid inlet of the liquid helium filling pipe being connected to the liquid helium storage tank, and a liquid outlet of the liquid helium filling pipe being connected to a liquid helium gun head.

[0006] As a further improvement to the above scheme, the front and rear inner walls of the pipeline bin are both installed with inner slide rails, and the two inner slide rails are slidably connected with outer slide rails. The right ends of the two outer slide rails are jointly fixed with a pipeline bin cover for fixing the liquid helium gun head. The pipeline bin cover is matched with the bin opening of the pipeline bin, and the left side wall of the pipeline bin cover is connected to the right end of the scissor-type telescopic frame.

[0007] As a further improvement to the above scheme, a plurality of circular hanging rings are provided at the lower end of the scissor-type telescopic frame, and the liquid helium filling pipe is collectively sleeved inside the plurality of circular hanging rings. An annular rubber pad is installed on the inner wall of each circular hanging ring, and a circular hole for passing the liquid helium filling pipe is opened on the outer wall of the pipeline warehouse.

[0008] As a further improvement of the above scheme, the rotating lifting mechanism includes a casing, a motor, a reducer and a rotating shaft. A second electric cylinder is fixed at the center of the bottom surface of the inner cavity of the casing. The telescopic end of the second electric cylinder is connected to a lifting platform, and the lifting platform is slidably installed inside the casing.

[0009] As a further improvement to the above scheme, the motor is installed on the lifting circular platform, the output end of the motor is connected to the reducer, the output end of the reducer is connected to the rotating shaft, and the top end of the rotating shaft is fixedly connected to the lower surface of the pipeline bin.

[0010] As a further improvement to the above solution, the top of the liquid helium storage tank is connected to a first neck tube, a first pressure gauge is installed on the first neck tube, a feed pipe and a first pipe joint are installed on the outer wall of the first neck tube, and valves are provided on the feed pipe and the first pipe joint.

[0011] As a further improvement to the above scheme, a helium booster tank is also placed on the bottom plate, the center of the upper end of the helium booster tank is connected to the second neck tube, a second pressure gauge is installed on the upper end of the second neck tube, and a second pipe joint is installed on the side wall of the second neck tube.

[0012] As a further improvement to the above solution, a control box is also provided on the top of the frame, a control panel is provided on the outer wall of the control box, a battery is installed inside the control box, a handle is welded on the right side wall of the frame, and a number of universal wheels are installed under the bottom plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a rotating lifting mechanism above the frame where the liquid helium storage tank is located, the rotating lifting mechanism is connected to the pipeline warehouse, a scissor-type lifting and retracting frame is arranged in the warehouse, the rotating lifting mechanism and the scissor-type telescopic frame are both controlled by a control box, and can be finely adjusted according to the position of the filling port, and accurately dock the filling port of the equipment. When performing the filling work, the staff does not need to come into close contact with the liquid helium, thereby avoiding the possible damage of the liquid helium to the staff during the liquid helium filling process; the liquid helium filling pipe connected to the pipe joint of the liquid helium storage tank enters the pipeline warehouse from the through hole on the side wall of the pipeline warehouse, passes through the scissor-type lifting and retracting frame arranged on the side wall of the pipeline warehouse, and passes through the scissor-type lifting and retracting frame arranged on the side wall of the pipeline warehouse. The lifting ring under the scissor-type telescopic frame is connected to the filling gun head on the pipeline bin cover to fill the equipment with liquid helium. The scissor-type telescopic frame fixes the liquid helium filling pipe. At the same time, the pipeline bin cover connected to the filling gun head is fixedly connected to the outer slide rail by bolts. The outer slide rail is slidably installed on the inner slide rail. The inner slide rail is fixedly connected to the inner wall of the pipeline bin by bolts to limit and support the extended scissor-type telescopic frame, enhance the stability during the filling process, prevent the leakage of liquid helium caused by uneven force at the connection caused by the instability of the filling pipe during the filling process, and avoid damage to the staff and equipment.

[0015] The utility model installs a helium booster tank on the frame. When in use, the outlet of the helium booster tank is connected to the feeding pipe of the liquid helium storage tank, the pressurized helium enters the liquid helium storage tank, the liquid helium in the liquid helium storage tank is pressed into the liquid helium filling pipe through the liquid helium storage tank pipe joint to perform the liquid helium filling work. At the same time, the upper ends of the helium booster tank and the liquid helium storage tank are both provided with pressure gauges to detect the pressure in the container in real time. The method of integrating the helium booster tank and the liquid helium storage tank makes the filling work smoother and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0019] Figure 3 This is a schematic diagram of the structure inside the pipeline bin of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the rotary lifting mechanism in the utility model;

[0021] Figure 5This is a schematic diagram of the structure of the liquid helium storage tank in the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the helium booster tank in the utility model;

[0023] Figure 7 This is a close-up structural diagram of the circular lifting ring in the utility model;

[0024] In the figure: 1, frame; 2, liquid helium storage tank; 3, bottom plate; 4, rotating lifting mechanism; 401, casing; 402, motor; 403, reducer; 404, rotating shaft; 405, second electric cylinder; 406, lifting round table; 5, pipeline warehouse; 501, fixed frame; 502, slide rail; 503, scissor-type telescopic frame; 504, first electric cylinder; 505, slider; 506, inner slide rail; 507, outer slide rail; 508, annular rubber pad; 509, round lifting ring; 6, liquid helium filling pipe; 7, liquid helium gun head; 8, pipeline warehouse cover; 9, round hole; 10, first neck tube; 11, feeding pipe; 12, first pipe joint; 13, helium booster tank; 14, second neck tube; 15, second pipe joint; 16, first pressure gauge; 17, second pressure gauge; 18 control box. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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. Example 1

[0026] A liquid helium adding device for maintenance of nuclear magnetic resonance equipment, such as Figure 1 As shown in the figure, it includes a frame 1, a liquid helium storage tank 2 and a base plate 3. The frame 1 is welded and fixed on the base plate 3. The liquid helium storage tank 2 is placed on the base plate 3. The upper end of the frame 1 is fixedly connected to a rotating lifting mechanism 4. A pipeline bin 5 is provided on the upper end of the rotating lifting mechanism 4. A circular hole 9 for passing a liquid helium filling pipe 6 is opened on the outer wall of the pipeline bin 5. A scissor-type telescopic frame 503 is provided in the pipeline bin 5. The liquid inlet of the liquid helium filling pipe 6 fixed under the scissor-type telescopic frame 503 is connected to the liquid helium storage tank 2, and the liquid outlet of the liquid helium filling pipe 6 is connected to a liquid helium gun head 7.

[0027] like Figures 3 to 7As shown, a fixing frame 501 and a slide rail 502 are installed on the top wall of the inner cavity of the pipeline warehouse 5, a scissor-type telescopic frame 503 is fixed at the lower end of the fixing frame 501, a first electric cylinder 504 is installed on the right side wall of the fixing frame 501, a slider 505 is fixed on the telescopic end of the first electric cylinder 504, the slider 505 is slidably installed on the slide rail 502, the lower end of the slider 505 is fixedly connected to one of the hinge shafts of the scissor-type telescopic frame 503, a plurality of circular lifting rings 507 are provided at the lower end of the scissor-type telescopic frame 503, a liquid helium filling pipe 6 is jointly sleeved in the plurality of circular lifting rings 507, an annular rubber pad 508 is installed on the inner wall of each circular lifting ring 507, the annular rubber pad 508 can effectively limit the movement of the liquid helium filling pipe 6, so that it can be stably fixed at the lower end of the scissor-type telescopic frame 503 when the device is working, and when the pipeline needs to be replaced, it can be completed quickly and losslessly.

[0028] like Figure 4 As shown, the rotating lifting mechanism 4 includes a casing 401, a motor 402, a reducer 403 and a rotating shaft 404. A second electric cylinder 405 is fixed at the center of the bottom surface of the inner cavity of the casing 401. The telescopic end of the second electric cylinder 405 is connected to the lifting table cylinder 406. The lifting table cylinder 406 is slidably installed inside the casing 401; the lifting table cylinder 406 is installed with a motor 402, the output end of the motor 402 is connected to the reducer 403, the output end of the reducer 403 is connected to the rotating shaft 404, and the top of the rotating shaft 404 is fixedly connected to the lower surface of the pipeline bin 5.

[0029] like Figure 1 , Figure 5 and Figure 6 As shown, the top of the liquid helium storage tank 2 is connected to a first neck tube 10, a first pressure gauge is installed on the first neck tube 10, a feed pipe 11 and a first pipe joint 12 are installed on the outer wall of the first neck tube 10, and valves are provided in the feed pipe 11 and the first pipe joint 12; a helium booster tank 13 is also placed on the bottom plate 3, the center of the upper end of the helium booster tank 13 is connected to a second neck tube 14, a second pressure gauge is installed on the upper end of the second neck tube 14, and a second pipe joint 15 is installed on the side wall of the second neck tube 14; a control box 18 is also arranged on the top of the frame 1, a control panel is arranged on the outer wall of the control box 18, a battery is installed inside the control box 18, a handle is welded to the right side wall of the frame 1, and a plurality of universal wheels are installed under the bottom plate 3.

[0030] When the embodiment 1 is working, the device is moved to the working area, the outlet of the helium booster tank 13 is connected to the feed pipe 11 of the liquid helium storage tank 2, the first pipe joint 12 is connected to the liquid inlet end of the liquid helium filling pipe 6, the liquid helium filling pipe 6 is inserted into the pipeline bin 5 from the circular hole 9 on the side wall of the pipeline bin 5, and is fixed below the scissor-type telescopic frame 503. The liquid outlet end of the liquid helium filling pipe 6 is connected to the liquid helium gun head 7, the second electric cylinder 405 is controlled by the control box 18 to adjust the liquid helium gun head 7 up and down, the motor 402 is controlled by the control box 18 to rotate and adjust the left and right angles of the liquid helium gun head 7, the first cylinder 504 is controlled by the control box 18 to push the slider 505 to move on the slide rail 502 so that the scissor-type telescopic frame 503 is extended and retracted, and finally the liquid helium gun head 7 is accurately inserted into the filling port of the filling target equipment, and the liquid is opened first. The valve of the first pipe joint 12 on the top of the helium storage tank 2 is opened, and then the valve of the feed pipe 11 on the top of the liquid helium storage tank 2 is opened, and finally the second pipe joint 15 on the top of the helium booster tank 13 is opened, and the high-pressure helium in the helium booster tank 13 enters the liquid helium storage tank 2, and the liquid helium is pressed into the liquid helium filling pipe 6 through the first pipe joint 12. According to the existing liquid helium filling technology, the first pipe joint 12 here is connected to a pipeline below the liquid helium liquid level inside the liquid helium storage tank 2, and the filling speed is adjusted by controlling the valve of the second pipe joint 15 of the helium booster tank 13. During the filling process, the staff needs to pay attention to the two pressure gauges and the filled equipment at all times. Finally, after the liquid helium in the liquid helium storage tank is filled to the specified amount, the valve of the second pipe joint 15, the valve of the feed pipe 11 and the valve of the first pipe joint 12 are closed in sequence. Example 2

[0031] Embodiment 2 is based on embodiment 1, as Figure 3 As shown, the front and rear inner walls of the pipeline bin 5 are both installed with inner slide rails 506, and the two inner slide rails 506 are slidably connected with outer slide rails 507. The right ends of the two outer slide rails 507 are jointly fixed with a pipeline bin cover 8 for fixing the liquid helium gun head 7. The pipeline bin cover 8 is matched with the bin opening of the pipeline bin 5, and the left side wall of the pipeline bin cover 8 is connected to the right end of the scissor-type telescopic frame 503.

[0032] In Example 2, before the scissors-type telescopic frame 503 is extended, the pipeline bin cover 8 cooperates with the bin opening of the pipeline bin 5 to protect the scissors-type telescopic frame 503 and components such as the liquid helium filling pipe 6 inside the pipeline bin 5, thereby reducing possible external force damage and improving the service life of the device; when the scissors-type telescopic frame 503 is extended, the two outer slide rails 507 connected to the pipeline bin cover 8 slide along the two inner slide rails 506 fixed on the front and rear inner walls of the pipeline bin 5, thereby limiting the telescopic trajectory of the scissors-type telescopic frame 503 and supporting the extended scissors-type telescopic frame 503 to avoid falling due to its own weight, thereby increasing the stability of the filling work.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid helium adding device for repairing and maintaining nuclear magnetic resonance equipment, comprising a frame (1), a liquid helium storage tank (2) and a base plate (3), wherein the frame (1) is welded and fixed on the base plate (3), and the liquid helium storage tank (2) is placed on the base plate (3), characterized in that: The upper end of the vehicle frame (1) is fixedly connected to a rotating lifting mechanism (4), the upper end of the rotating lifting mechanism (4) is provided with a pipeline bin (5), the inner cavity top wall of the pipeline bin (5) is mounted with a fixing frame (501) and a slide rail (502), the lower end of the fixing frame (501) is fixed with a scissor-type telescopic frame (503), the right side wall of the fixing frame (501) is mounted with a first electric cylinder (504), the telescopic end of the first electric cylinder (504) is fixed with a slider (505), the slider (505) is slidably mounted on the slide rail (502), the lower end of the slider (505) is fixedly connected to one of the hinge shafts of the scissor-type telescopic frame (503), the lower end of the scissor-type telescopic frame (503) is provided with a liquid helium filling pipe (6), the liquid inlet of the liquid helium filling pipe (6) is connected to the liquid helium storage tank (2), and the liquid outlet of the liquid helium filling pipe (6) is connected to a liquid helium gun head (7).

2. The liquid helium adding device for maintenance of nuclear magnetic resonance equipment according to claim 1, characterized in that: The front and rear inner walls of the pipeline bin (5) are both provided with inner slide rails (506), and the two inner slide rails (506) are both slidably connected with outer slide rails (507), and the right ends of the two outer slide rails (507) are jointly fixed with a pipeline bin cover (8) for fixing the liquid helium gun head (7), and the pipeline bin cover (8) is arranged in coordination with the bin opening of the pipeline bin (5), and the left side wall of the pipeline bin cover (8) is connected with the right end of the scissor-type telescopic frame (503).

3. The liquid helium adding device for maintenance of nuclear magnetic resonance equipment according to claim 1, characterized in that: A plurality of circular hanging rings (509) are provided at the lower end of the scissor-shaped telescopic frame (503), the liquid helium filling pipe (6) being collectively sleeved inside the plurality of circular hanging rings (509), an annular rubber pad (508) being installed on the inner wall of each circular hanging ring (509), and a circular hole (9) for passing the liquid helium filling pipe (6) is provided on the outer wall of the pipeline warehouse (5).

4. The liquid helium adding device for maintenance of nuclear magnetic resonance equipment according to claim 1, characterized in that: The rotary lifting mechanism (4) comprises a housing (401), a motor (402), a reducer (403) and a rotating shaft (404); a second electric cylinder (405) is fixed at the center of the bottom surface of the inner cavity of the housing (401); a telescopic end of the second electric cylinder (405) is connected to a lifting round platform (406); and the lifting round platform (406) is slidably installed inside the housing (401).

5. The liquid helium adding device for maintenance of nuclear magnetic resonance equipment according to claim 4, characterized in that: The electric motor (402) is mounted on the lifting rotatable platform (406); the output end of the electric motor (402) is connected to a reducer (403); the output end of the reducer (403) is connected to a rotating shaft (404); and the top end of the rotating shaft (404) is fixedly connected to the lower surface of the pipeline bin (5).

6. The liquid helium adding device for maintenance of nuclear magnetic resonance equipment according to claim 1, characterized in that: The top of the liquid helium storage tank (2) is connected to a first neck tube (10), a first pressure gauge (16) is installed on the first neck tube (10), a feed pipe (11) and a first pipe joint (12) are installed on the outer wall of the first neck tube (10), and the feed pipe (11) and the first pipe joint (12) are provided with valves.

7. The liquid helium adding device for maintenance of nuclear magnetic resonance equipment according to claim 1, characterized in that: A helium booster tank (13) is also placed on the bottom plate (3); the center of the upper end of the helium booster tank (13) is connected to a second neck tube (14); a second pressure gauge (17) is installed at the upper end of the second neck tube (14); and a second pipe joint (15) is installed on the side wall of the second neck tube (14).

8. The liquid helium adding device for maintenance of nuclear magnetic resonance equipment according to claim 1, characterized in that: A control box (18) is also provided on the top of the frame (1), a control panel is provided on the outer wall of the control box (18), a storage battery is installed inside the control box (18), a handle is welded to the right side wall of the frame (1), and a plurality of universal wheels are installed under the bottom plate (3).

Images