Quick connection type gradient coil water cooling device

Abstract

The utility model relates to the technical field of magnetic resonance equipment, in particular to a quick connection type gradient coil water cooling device which comprises a water inlet manifold and a water outlet manifold which are connected with a water cooling machine, the water inlet manifold is connected with a water inlet row, the water outlet manifold is connected with a water outlet row, and the confluence ends of the water inlet row and the water outlet row are respectively provided with a filter screen. Each branch pipe of the water inlet row is respectively connected with a silica gel water inlet hose, each branch pipe of the water outlet row is respectively connected with a silica gel water outlet hose, the end parts of the silica gel water inlet hoses and the silica gel water outlet hoses are respectively connected with rotary elbows, the rotary elbows comprise threaded connectors and metal elbows, the metal elbows are provided with threaded connecting parts, and the threaded connecting parts are connected with the threaded connecting parts. The diameter of the water inlet main pipe and the diameter of the water outlet main pipe are increased, the water inlet row and the water outlet row are introduced, the volume is increased, and the copper pipe is not prone to being blocked due to the fact that the filter screen is additionally arranged; the quick connection mode of the conical quick connector is adopted for installation and fastening, more labor and time are saved, and disassembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic resonance equipment, in particular to a quick-connection type gradient coil water cooling device. Background Technique

[0002] The gradient coil is an important component in MRI. By passing an electric current, it can generate an alternating magnetic field, which is related to the final imaging effect of MRI. The water chiller is a device for cooling the gradient coil. The circulating water has a high inlet temperature and a low outlet temperature, providing cooling capacity. During the operation of the gradient coil, a high-intensity current is passed through, which inevitably generates a large amount of heat. To avoid the influence of too high temperature on the performance of the gradient coil, water cooling is required inside the gradient coil. There is a water cooling layer inside the gradient coil, and the device for providing water cooling is the water chiller. A set of water supply pipelines is used for heat exchange between the water cooling layer and the water chiller. This pipeline must be kept unblocked at all times, without clogging, and the water flow rate must be large to ensure the water cooling effect.

[0003] At present, the water volume of the water supply pipeline is small. The water supply pipeline needs to be shut down every month for dirt cleaning. The water cooling effect is poor, and dirt is easy to accumulate. Eventually, the gradient coil frequently alarms due to high temperature, making it difficult to operate continuously with high performance. It needs to wait for a long time to operate normally, and the connection between the gradient coil and the hose is easy to fall off, causing water leakage, which can seriously cause system electric shock, with great potential hazards. It has high requirements for daily maintenance, brings great inconvenience to daily operation, and even affects the use of the gradient coil, seriously affecting the work process. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a quick-connection type gradient coil water cooling device with a large water flow rate, which can effectively improve the water cooling efficiency, meet the daily cooling requirements of the gradient coil, reduce the generation of dirt inside the gradient coil, prevent the damage of the gradient coil caused by poor water cooling effect, be convenient for installation and use, and have a low maintenance cost.

[0005] To solve the above technical problems, the technical solution of the present utility model is: a quick-connect gradient coil water cooling device, including a main inlet pipe and a main outlet pipe connected to a water cooler. The main inlet pipe is connected to an inlet water row, and the main outlet pipe is connected to an outlet water row. Filter nets are respectively installed at the confluence ends of the inlet water row and the outlet water row. Each branch pipe of the inlet water row is respectively connected to a silica gel inlet hose, and each branch pipe of the outlet water row is respectively connected to a silica gel outlet hose. Rotating elbows are respectively connected to the ends of the silica gel inlet hose and the silica gel outlet hose. The rotating elbow includes a threaded connection head for inserting into the gradient coil copper pipe. A metal elbow is rotatably installed on the outer peripheral surface of the threaded connection head. A sealing device is provided between the threaded connection head and the metal elbow. The other end of the metal elbow is provided with a threaded connection portion, and a tapered quick connector is provided at the end of the threaded connection portion. The silica gel inlet hose and the silica gel outlet hose are respectively sleeved on the threaded connection portion from the tapered quick connector and fixed by fastening nuts.

[0006] As a preferred technical solution, one end of the metal elbow close to the threaded connection head is coated with a flexible limit protective sleeve, and the limit end of the flexible limit protective sleeve extends out of the end of the metal elbow for limiting the depth of insertion of the threaded connection head into the gradient coil copper pipe.

[0007] As a preferred technical solution, the threaded connection head is of a cylindrical structure. A stepped surface is provided on the outer wall of the cylinder. The stepped surface divides the cylinder into a large outer diameter end and a small outer diameter end. Threads are provided on the circumferential surface of the large outer diameter end, and a limit concave ring and a sealing concave ring are provided on the circumferential surface of the small outer diameter end. A limit convex ring for rotational cooperation with the limit concave ring is provided on the inner wall of the metal elbow.

[0008] As a preferred technical solution, the sealing device is a sealing ring installed in the sealing concave ring.

[0009] As a preferred technical solution, there are two sealing concave rings, and correspondingly two sealing rings are also installed.

[0010] As a preferred technical solution, an outer stepped surface is provided on the outer wall of one end of the metal elbow close to the threaded connection head, and an inner stepped surface is provided on the inner wall of one end of the metal elbow close to the threaded connection head. The inner stepped surface is in close fit with the end face of the threaded connection head.

[0011] As a preferred technical solution, the flexible limit protective sleeve is of a cylindrical shape. A protective sleeve stepped surface is provided on the inner wall of the flexible limit protective sleeve. The protective sleeve stepped surface is in close fit with the outer stepped surface.

[0012] As a preferred technical solution, one end of the flexible limit protective sleeve close to the threaded connector is provided with a radial limit plane, and the other end of the flexible limit protective sleeve is provided with a transition arc surface.

[0013] As a preferred technical solution, the outer wall of the tapered quick connector is tapered, and the inner diameter of the tapered quick connector is the same as the inner diameter of the metal elbow.

[0014] As a preferred technical solution, the water inlet drain and the water outlet drain are respectively four-way drains. Correspondingly, there are four silicone water inlet hoses and four silicone water outlet hoses respectively. Filter nets are installed at the confluence ends of the water inlet drain and the water outlet drain.

[0015] Due to the adoption of the above technical solution, the quick-connect type gradient coil water cooling device includes an inlet main pipe and an outlet main pipe connected to a water cooler. The inlet main pipe is connected to a water inlet drain, and the outlet main pipe is connected to a water outlet drain. Filter nets are installed at the confluence ends of the water inlet drain and the water outlet drain. Each branch pipe of the water inlet drain is respectively connected to a silicone water inlet hose, and each branch pipe of the water outlet drain is respectively connected to a silicone water outlet hose. The ends of the silicone water inlet hose and the silicone water outlet hose are respectively connected to a rotary elbow. The rotary elbow includes a threaded connector for inserting into the gradient coil copper pipe. A metal elbow is rotatably installed on the outer peripheral surface of the threaded connector. A sealing device is provided between the threaded connector and the metal elbow. The other end of the metal elbow is provided with a threaded connection portion. The end of the threaded connection portion is provided with a tapered quick connector. The silicone water inlet hose and the silicone water outlet hose are respectively sleeved on the threaded connection portion from the tapered quick connector and fixed by fastening nuts. The beneficial effects of the present invention are as follows: By increasing the diameters of the inlet main pipe and the outlet main pipe and introducing the water inlet drain and the water outlet drain, the volume becomes larger. After the filter net filters out larger dirt in the water, it will not flow into the copper pipe of the gradient coil, and it is not easy to form dirt and cause blockage of the copper pipe. The connection between the silicone water inlet hose and the silicone water outlet hose and the gradient coil copper pipe is made by a rotary elbow, which is firmly installed and will not cause water leakage due to high water pressure. The rotary elbow has the function of free rotation, which can realize the free swing of the hose angle, avoid interference of the hose when installing other components, and is convenient to install and simple to operate, saving a lot of time compared with before. The connection between the silicone water inlet hose and the silicone water outlet hose and the rotary elbow adopts a quick-connect method, which can be directly inserted into one end of the tapered quick connector with a small angle, and then the fastening nut is screwed in, which is more labor-saving and time-saving than the previous pagoda-shaped installation and fastening method and is convenient to disassemble. Description of the Drawings

[0016] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0017] Figure 1It is a schematic structural diagram of the quick-connect type gradient coil water cooling device of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the rotating elbow of the quick-connect type gradient coil water cooling device of the present utility model;

[0019] Figure 3 It is Figure 2 the view from direction A in

[0020] Figure 4 It is Figure 3 the sectional view taken along line B-B in

[0021] Figure 5 It is Figure 4 the enlarged partial view at position I in

[0022] In the figure: 1 - water chiller; 2 - total water inlet pipe; 3 - total water outlet pipe; 4 - water inlet radiator; 5 - water outlet radiator; 6 - silicone water inlet hose; 7 - silicone water outlet hose; 8 - rotating elbow; 81 - flexible limit protective sleeve; 811 - limit plane; 812 - transition arc surface; 82 - threaded connector; 821 - limit convex ring; 83 - metal elbow; 831 - threaded connection part; 832 - tapered quick connector; 84 - fastening nut; 85 - sealing ring; 9 - gradient coil. Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the accompanying drawings and the description are illustrative in nature and are not used to limit the protection scope of the claims.

[0024] As Figures 1 to 5As shown together, the quick-connect type gradient coil water cooling device includes a total water inlet pipe 2 and a total water outlet pipe 3 connected to a water cooler 1. The total water inlet pipe 2 is connected to a water inlet water row 4, and the total water outlet pipe 3 is connected to a water outlet water row 5. Filter nets are respectively installed at the confluence ends of the water inlet water row 4 and the water outlet water row 5. Each branch pipe of the water inlet water row 4 is respectively connected to a silica gel water inlet hose 6, and each branch pipe of the water outlet water row 5 is respectively connected to a silica gel water outlet hose 7. The ends of the silica gel water inlet hose 6 and the silica gel water outlet hose 7 are respectively connected to a rotary elbow 8. The rotary elbow 8 includes a threaded connection head 82 for inserting into the copper pipe of the gradient coil 9. A metal elbow 83 is rotatably installed on the outer peripheral surface of the threaded connection head 82. A sealing device is provided between the threaded connection head 82 and the metal elbow 83. The other end of the metal elbow 83 is provided with a threaded connection portion 831, and a tapered quick connector 832 is provided at the end of the threaded connection portion 831. The silica gel water inlet hose 6 and the silica gel water outlet hose 7 are respectively sleeved on the threaded connection portion 831 from the tapered quick connector 832 and fixed by a fastening nut 84; by increasing the diameters of the total water inlet pipe 2 and the total water outlet pipe 3 and introducing the water inlet water row 4 and the water outlet water row 5, the volume becomes larger. The filter net filters out larger dirt in the water and will not flow into the copper pipe of the gradient coil 9, and it is not easy to form dirt and cause the copper pipe to be blocked; the silica gel water inlet hose 6 and the silica gel water outlet hose 7 are connected to the copper pipe of the gradient coil 9 by using the rotary elbow 8, and the installation is firm, and there will be no situation of water leakage due to large water pressure. The rotary elbow 8 has the function of free rotation, and the angle of the hose can be freely swung, avoiding interference of the hose when installing other components, and the installation is convenient and the operation is simple. Compared with the previous situation, a large amount of time can be saved. The connection between the silica gel water inlet hose 6 and the silica gel water outlet hose 7 and the rotary elbow 8 adopts a quick-connect method, and can be directly inserted into one end with a small-angle tapered quick connector 832, and then the fastening nut 84 is screwed in, which is more labor-saving and time-saving than the previous pagoda-shaped installation and fastening method, and is convenient for disassembly.

[0025] As Figure 4 and Figure 5 As shown together, one end of the metal elbow 83 close to the threaded connection head 82 is coated with a flexible limit protective sleeve 81. The limit end of the flexible limit protective sleeve 81 extends out of the end of the metal elbow 83 and is used to limit the depth of insertion of the threaded connection head 82 into the copper pipe of the gradient coil 9. The flexible limit protective sleeve 81 is preferably made of PU material. When the rotary elbow 8 is screwed in to a certain extent, the flexible limit protective sleeve 81 made of PU material is stressed at this time, and there will be a certain resistance when continuing to rotate, reminding the operator not to continue to rotate the knob, which greatly improves the service life of the thread at the connection between the gradient coil 9 and the rotary elbow 8, reduces the irreversible damage caused by excessive extrusion of the threaded connection head 82 made of copper material, and reduces the failure rate caused by thread damage problems in the later stage.

[0026] As Figure 4 and Figure 5As shown together, the threaded connector 82 is of a cylindrical structure. The outer wall of the cylinder is provided with a stepped surface, which divides the cylinder into a large outer diameter end and a small outer diameter end. The circumferential surface of the large outer diameter end is provided with threads, and the circumferential surface of the small outer diameter end is provided with a limiting concave ring and a sealing concave ring. A limiting convex ring 821 that is rotationally matched with the limiting concave ring is provided on the inner wall of the metal elbow 83. Since the limiting convex ring 821 and the limiting concave ring are rotationally connected, the threaded connector 82 and the metal elbow 83 are rotationally connected, enabling the angle of the silicone water inlet hose 6 and the silicone water outlet hose 7 to swing freely, avoiding interference when installing other components, and being convenient to install with simple operation, saving a large amount of time compared with before.

[0027] As Figure 4 and Figure 5 shown together, the sealing device is a sealing ring 85 installed in the sealing concave ring. The sealing ring 85 is preferably a rubber ring to ensure that the rotary elbow 8 does not leak water when rotating.

[0028] As Figure 4 and Figure 5 shown together, there are two sealing concave rings, and correspondingly two sealing rings 85 are also installed. The two sealing concave rings are arranged at intervals, and the two sealing rings 85 play a role of double sealing.

[0029] As Figure 4 and Figure 5 shown together, an outer stepped surface is provided on the outer wall of the end of the metal elbow 83 close to the threaded connector 82, and an inner stepped surface is provided on the inner wall of the end of the metal elbow 83 close to the threaded connector 82. The inner stepped surface is in close fit with the end face of the threaded connector 82. The outer stepped surface is for positioning with the protective sleeve stepped surface of the flexible limiting protective sleeve 81, and the inner stepped surface is for positioning with the end of the threaded connector 82.

[0030] As Figure 4 and Figure 5 shown together, the flexible limiting protective sleeve 81 is of a cylindrical shape. A protective sleeve stepped surface is provided on the inner wall of the flexible limiting protective sleeve 81, and the protective sleeve stepped surface is in close fit with the outer stepped surface. The flexible protective sleeve does not need to be too long and is determined according to the depth of insertion into the copper tube of the gradient coil 9.

[0031] As Figure 4 and Figure 5 shown together, a radial limiting plane 811 is provided at one end of the flexible limiting protective sleeve 81 close to the threaded connector 82, and a transition arc surface 812 is provided at the other end of the flexible limiting protective sleeve 81. The limiting plane 811 plays a limiting role when it fits with the outer surface of the gradient coil 9, and the transition arc surface 812 increases the comfort of holding during installation.

[0032] As Figure 4and Figure 5 As commonly shown, the outer wall of the conical quick connector 832 is conical, and the inner diameter of the conical quick connector 832 is the same as that of the metal elbow 83. The fastening nut 84 is pre-screwed on the threaded connection part 831. The silicone water inlet hose 6 and the silicone water outlet hose 7 can be directly inserted into the conical quick connector 832 with a small angle, and then the fastening nut 84 can be tightened. It is more labor-saving and time-saving than the previous pagoda-shaped installation and fastening method, and is convenient for disassembly.

[0033] As Figure 1 shown, the water inlet drain 4 and the water outlet drain 5 are respectively four-way drains. Correspondingly, there are four silicone water inlet hoses 6 and four silicone water outlet hoses 7 respectively. Filter nets are installed at the confluence ends of the water inlet drain 4 and the water outlet drain 5. The inner diameters of the water inlet main pipe 2 and the water outlet main pipe 3 are 10, and the inner diameters of the silicone water inlet hose 6 and the silicone water outlet hose 7 are 6. The water pipes can effectively increase the water flow rate, improve the cooling efficiency, and provide guarantee for the high-performance operation of the gradient coil 9; the volume of the four-way drain becomes larger, and a stainless steel filter net is installed at the confluence end, so that larger dirt in the water will not flow into the copper pipe of the gradient coil 9, and it is not easy to form dirt to cause blockage of the copper pipe. Four silicone water outlet hoses 7 are connected to a four-way water outlet drain 5 to form a return water circuit, and four silicone water inlet hoses 6 are connected to a four-way water inlet drain 4 to form a water inlet circuit.

[0034] The utility model uses a rotary elbow 8, a silicone water inlet hose 6, a silicone water outlet hose 7, and a four-way drain to form a set of pipelines, which are connected between the water cooler 1 and the gradient coil 9, can effectively improve the water-cooling efficiency, reduce the generation of dirt inside the gradient coil 9, and prevent the damage of the gradient coil 9 caused by poor water-cooling effect. It has the following advantages:

[0035] (1) The water flow rate is large, meeting the daily cooling requirements of the gradient coil 9;

[0036] (2) The angle of the silicone hose connected by the rotary elbow 8 can swing freely, which is convenient for the use and installation of subsequent components.

[0037] (3) Using a new type of four-way drain, it is not easy to generate dirt blockage;

[0038] (4) The installation is simple, the failure rate is low, the maintenance cost is reduced, and it can be better put into market use.

[0039] The specifications of the parts used in the utility model are as follows:

[0040]

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model.

[0042] Only some exemplary embodiments of the present utility model have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as a limitation to the scope of protection of the claims of the present utility model.

Claims

1. Quick-connect gradient coil water cooling device, characterized in that: It includes a main inlet pipe (2) and a main outlet pipe (3) connected to a water chiller (1). The main inlet pipe (2) is connected to an inlet water row (4), and the main outlet pipe (3) is connected to an outlet water row (5). Filter meshes are respectively installed at the confluence ends of the inlet water row (4) and the outlet water row (5). Each branch pipe of the inlet water row (4) is respectively connected to a silica gel inlet hose (6), and each branch pipe of the outlet water row (5) is respectively connected to a silica gel outlet hose (7). The ends of the silica gel inlet hose (6) and the silica gel outlet hose (7) are respectively connected to a rotary elbow (8). The rotary elbow (8) includes a threaded connector (82) for inserting into the copper pipe of a gradient coil (9). A metal elbow (83) is rotatably installed on the outer peripheral surface of the threaded connector (82). A sealing device is provided between the threaded connector (82) and the metal elbow (83). The other end of the metal elbow (83) is provided with a threaded connection portion (831), and a tapered quick connector (832) is provided at the end of the threaded connection portion (831). The silica gel inlet hose (6) and the silica gel outlet hose (7) are respectively sleeved on the threaded connection portion (831) from the tapered quick connector (832) and fixed by a fastening nut (84).

2. The quick-connect gradient coil water cooling device according to claim 1, characterized in that: One end of the metal elbow (83) close to the threaded connector (82) is coated with a flexible limit protective sleeve (81). The limit end of the flexible limit protective sleeve (81) extends out of the end of the metal elbow (83) and is used to limit the depth of insertion of the threaded connector (82) into the copper pipe of the gradient coil (9).

3. The quick-connect gradient coil water cooling device according to claim 2, wherein: The threaded connector (82) is of a cylindrical structure. The outer wall of the cylinder is provided with a stepped surface, which divides the cylinder into a large outer diameter end and a small outer diameter end. Threads are provided on the circumferential surface of the large outer diameter end, and a limit concave ring and a sealing concave ring are provided on the circumferential surface of the small outer diameter end. A limit convex ring (821) that is rotationally matched with the limit concave ring is provided on the inner wall of the metal elbow (83).

4. The quick-connect gradient coil water cooling device according to claim 3, wherein: The sealing device is a sealing ring (85) installed in the sealing concave ring.

5. The quick-connect gradient coil water cooling device according to claim 4, wherein: There are two sealing concave rings, and correspondingly, two sealing rings (85) are also installed.

6. The quick-connect type gradient coil water cooling device according to claim 3, characterized in that: One end of the metal elbow (83) close to the threaded connector (82) is provided with an outer stepped surface, and one end of the metal elbow (83) close to the threaded connector (82) is provided with an inner stepped surface, and the inner stepped surface is in close contact with the end face of the threaded connector (82).

7. The quick-connect gradient coil water cooling device according to claim 6, characterized in that: The flexible limit protective sleeve (81) is of a cylindrical type. The inner wall of the flexible limit protective sleeve (81) is provided with a protective sleeve stepped surface, and the protective sleeve stepped surface is in close contact with the outer stepped surface.

8. The quick-connect gradient coil water cooling device according to claim 7, wherein: One end of the flexible limit protective sleeve (81) close to the threaded connector (82) is provided with a radial limit plane (811), and the other end of the flexible limit protective sleeve (81) is provided with a transition arc surface (812).

9. The quick-connect gradient coil water cooling device according to claim 8, characterized in that: The outer wall of the tapered quick connector (832) is tapered, and the inner diameter of the tapered quick connector (832) is the same as the inner diameter of the metal elbow (83).

10. The quick-connect gradient coil water cooling device according to any one of claims 1 to 9, characterized in that: The water inlet drain (4) and the water outlet drain (5) are respectively four-way drains, and correspondingly, four silica gel water inlet hoses (6) and four silica gel water outlet hoses (7) are respectively provided.

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