Emptying device for magnetic resonance apparatus
By adding a pressure relief valve to the exhaust pipe of the magnetic resonance equipment, the problem of easy damage to the mechanical vent valve of the superconducting magnet was solved, achieving higher precision pressure control and preventing liquid helium leakage, thus ensuring stable internal pressure of the magnet.
Patent Information
- Application Number
- CN202423010777.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-05
AI Technical Summary
The mechanical vent valves of superconducting magnets in existing magnetic resonance imaging (MRI) devices are prone to damage and leakage, resulting in low pressure control accuracy.
A pressure relief valve is added to the exhaust pipeline to replace the control pressure when the mechanical vent valve becomes unstable or malfunctions. It includes a spring and blocking structure, and automatically or manually controls the opening and closing of the valve. Combined with a pressure sensor and controller, it achieves automated management.
This improves the stability of pressure control within the exhaust pipe, avoids liquid helium leakage caused by damage to the mechanical vent valve, and ensures stable internal pressure of the magnet.
Smart Images
Figure CN223773773U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of accessories for magnetic resonance imaging (MRI) equipment, and in particular to a venting device for MRI equipment. Background Technology
[0002] In current magnetic resonance imaging (MRI) equipment, the magnet is usually connected to a quench tube for venting exhaust gases. A mechanical vent valve is usually installed between the quench tube and the magnet. The mechanical vent valve is used to maintain the pressure inside the magnet. When the pressure inside the magnet reaches a threshold, the mechanical vent valve opens, and the gas inside the magnet enters the quench tube through the mechanical vent valve to maintain the pressure inside the magnet.
[0003] However, for superconducting magnets, their special pressure structure makes the mechanical venting valves prone to damage and leakage. The mechanical venting valves open before the gas inside the magnet reaches the threshold, resulting in low accuracy of pressure relief. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a venting device for magnetic resonance equipment in order to overcome the above-mentioned defects.
[0005] This utility model achieves the above-mentioned technical effects through the following technical solution:
[0006] This utility model provides a venting device for a magnetic resonance imaging (MRI) device, characterized in that the venting device for the MRI device comprises:
[0007] An exhaust pipe, one end of which is connected to the magnet, is used to discharge gas from inside the magnet.
[0008] A quench tube, one end of which is connected to the exhaust pipe of the magnet, and the other end of which is connected to the atmosphere;
[0009] A mechanical vent valve is installed on the exhaust pipe;
[0010] A pressure relief valve is disposed on the exhaust pipe and located between the quench pipe and the mechanical vent valve. The pressure relief valve is configured to open when the pressure in the exhaust pipe reaches a preset threshold, so that gas inside the magnet enters the quench pipe through the exhaust pipe.
[0011] In this solution, by adding a pressure relief valve, when the stability of the mechanical vent valve deteriorates or malfunctions, the pressure relief valve can act as a substitute to control the pressure in the exhaust pipeline, thereby preventing the mechanical vent valve from failing to close and causing a large amount of liquid helium to leak out, and preventing liquid helium leakage due to temporary damage to the mechanical vent valve, which could lead to quenching failure.
[0012] Preferably, the pressure relief valve includes a spring and a blocking member, the spring being connected to the blocking member, and the spring being configured to compress when the pressure in the exhaust pipe reaches a threshold value of the spring to move the blocking member, thereby opening the pressure relief valve.
[0013] In this solution, through the above-mentioned structural design, the pressure relief valve can automatically open according to the pressure in the exhaust pipeline.
[0014] Preferably, the spring is configured such that when the pressure in the exhaust pipe drops below a threshold value of the spring, the spring resets to actuate the blocking element and close the pressure relief valve.
[0015] In this solution, through the above structural design, the pressure relief valve can automatically close the valve according to the pressure in the exhaust pipeline.
[0016] Preferably, the pressure relief valve further includes a manual valve so that an operator can manually control the opening and closing of the pressure relief valve.
[0017] In this solution, the above-mentioned structural design allows operators to manually open or close the pressure relief valve in a timely manner when liquid helium leakage is observed.
[0018] Preferably, the venting device further includes a pressure sensor, which is disposed in the exhaust pipe and used to detect the pressure in the exhaust pipe.
[0019] Preferably, the venting device further includes a controller, and the pressure sensor is electrically connected to the controller, the pressure sensor transmitting a pressure signal to the controller;
[0020] The controller is electrically connected to the valve of the pressure relief valve, and the controller controls the opening and closing of the valve according to the pressure signal.
[0021] In this solution, through the above-mentioned structural design, the pressure relief valve can automatically open or close according to the pressure in the exhaust pipeline.
[0022] Preferably, the venting device further includes a display panel, and the pressure sensor is electrically connected to the display panel so that the display panel displays the pressure inside the exhaust pipe.
[0023] In this solution, the above-mentioned structural setup allows operators to monitor the pressure in the exhaust pipe in real time, thereby ensuring that the pressure relief valve can be opened in a timely manner.
[0024] Preferably, the pressure sensor is remotely connected to a remote controller, and the remote controller is configured to remotely control the opening and closing of the pressure relief valve based on the pressure signal from the pressure sensor.
[0025] Preferably, the pressure relief valve is configured to close when the pressure in the exhaust pipe is lower than a preset threshold, thereby preventing gas inside the magnet from entering the quench tube through the exhaust pipe.
[0026] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.
[0027] The positive and progressive effects of this utility model are as follows:
[0028] For this venting device, by adding a pressure relief valve, when the stability of the mechanical venting valve deteriorates or malfunctions, the pressure relief valve can be used as a substitute to control the pressure in the exhaust pipeline, thereby preventing the mechanical venting valve from failing to close and causing a large amount of liquid helium to leak out, and preventing liquid helium leakage caused by temporary damage to the mechanical venting valve, which could lead to quenching failure. Attached Figure Description
[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the above and other features and advantages of the present invention.
[0030] Figure 1 This is a schematic diagram of the venting device for a magnetic resonance imaging (MRI) device according to a preferred embodiment of the present invention.
[0031] The accompanying figure is labeled as follows:
[0032] 100 Vacuum venting device for magnetic resonance imaging equipment
[0033] Mechanical vent valve 101
[0034] Loss of control 102
[0035] Pressure relief valve 103
[0036] Exhaust pipe 104
[0037] Magnet 200 Detailed Implementation
[0038] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, specific embodiments of this utility model are now described with reference to the accompanying drawings, in which the same reference numerals denote the same parts.
[0039] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.
[0040] To keep the drawings concise, only the parts related to this utility model are shown schematically in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is labeled.
[0041] In this article, "one" can mean not only "only one" but also "more than one". In this article, "first", "second", etc., are used only to distinguish one from another, not to indicate their importance, order, or mutual dependence.
[0042] This utility model discloses a venting device 100 for magnetic resonance imaging equipment. For example... Figure 1 As shown, the venting device 100 for a magnetic resonance imaging (MRI) device includes an exhaust pipe 104, a quench tube 102, a mechanical venting valve 101, and a pressure relief valve 103. One end of the exhaust pipe 104 is connected to the magnet 200, and the exhaust pipe 104 is used to vent gas inside the magnet. One end of the quench tube 102 is connected to the exhaust pipe 104 of the magnet 200, and the other end of the quench tube 102 is connected to the atmosphere. The mechanical venting valve 101 is disposed on the exhaust pipe 104. The pressure relief valve 103 is disposed on the exhaust pipe 104, and is located between the quench tube 102 and the mechanical venting valve 101. The pressure relief valve 103 is configured to open when the pressure in the exhaust pipe 104 reaches a preset threshold, allowing gas inside the magnet to enter the quench tube 102 through the exhaust pipe 104.
[0043] In this embodiment, by adding a pressure relief valve 103, when the stability of the mechanical vent valve 101 deteriorates or malfunctions, the pressure relief valve 103 can be used as a substitute to control the pressure in the exhaust pipe 104, thereby preventing the mechanical vent valve 101 from failing to close and causing a large amount of liquid helium to leak out, and preventing liquid helium leakage caused by temporary damage to the mechanical vent valve 101, which could lead to quenching.
[0044] The mechanical vent valve 101 is used to maintain the pressure inside the magnet. When the internal pressure of the magnet reaches a threshold, the mechanical vent valve 101 opens, and the gas inside the magnet enters the quench tube 102 through the mechanical vent valve 101 to maintain the internal pressure of the magnet. The mechanical vent valve can be a 16 / 17 PSIA valve.
[0045] The pressure relief valve 103 includes a spring and a blocking element. The spring is connected to the blocking element. The spring is configured to compress when the pressure in the exhaust pipe 104 reaches a threshold value, thereby moving the blocking element and opening the pressure relief valve 103. With the above structural configuration, the pressure relief valve 103 can automatically open the valve according to the pressure in the exhaust pipe 104.
[0046] The spring element is configured such that when the pressure in the exhaust pipe 104 drops below its threshold value, the spring element resets, causing the blocking element to close the pressure relief valve 103. With this structural configuration, the pressure relief valve 103 can automatically close based on the pressure in the exhaust pipe 104.
[0047] It should be noted that the pressure in the exhaust pipe 104 refers to the pressure in the exhaust pipe 104 between the pressure relief valve 103 and the magnet, which is the same as the pressure inside the magnet.
[0048] The pressure relief valve 103 also includes a manual valve, allowing the operator to manually control its opening and closing. With this structural design, the operator can promptly and manually open or close the pressure relief valve 103 upon observing a liquid helium leak.
[0049] The venting device 100 also includes a pressure sensor, which is installed in the exhaust pipe 104 and used to detect the pressure within the exhaust pipe 104. The venting device 100 also includes a controller; the pressure sensor is electrically connected to the controller and transmits a pressure signal to the controller. The controller is electrically connected to the valve of the pressure relief valve 103, and controls the opening and closing of the valve based on the pressure signal. With the above structural configuration, the pressure relief valve 103 can automatically open or close according to the pressure within the exhaust pipe 104.
[0050] In an alternative embodiment, the venting device 100 further includes a pressure sensor disposed in the exhaust pipe 104 and used to detect the pressure within the exhaust pipe 104. The venting device 100 also includes a display panel, to which the pressure sensor is electrically connected, so that the display panel shows the pressure inside the exhaust pipe 104. With the above structural configuration, the operator can observe the pressure in the exhaust pipe 104 in real time, thereby ensuring timely opening of the pressure relief valve 103.
[0051] In an alternative embodiment, the venting device 100 further includes a pressure sensor disposed in the exhaust pipe 104 and used to detect the pressure within the exhaust pipe 104. The pressure sensor is remotely connected to a remote controller, which is configured to remotely control the opening and closing of the pressure relief valve 103 based on the pressure signal from the pressure sensor.
[0052] The pressure relief valve 103 is configured to close when the pressure in the exhaust line 104 is lower than a preset threshold, so as to prevent gas inside the magnet from entering the quench pipe 102 through the exhaust line 104.
[0053] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.
Claims
1. A venting device for a magnetic resonance imaging (MRI) device, characterized in that, The venting device for the magnetic resonance imaging equipment includes: An exhaust pipe, one end of which is connected to a magnet, is used to exhaust gas from inside the magnet. A quench pipe, one end of which is connected to the exhaust pipe and the other end of which is connected to the atmosphere; A mechanical vent valve is installed on the exhaust pipe; A pressure relief valve is disposed on the exhaust pipe and located between the quench pipe and the mechanical vent valve. The pressure relief valve is configured to open when the pressure in the exhaust pipe reaches a preset threshold, so that gas inside the magnet enters the quench pipe through the exhaust pipe.
2. The venting device for a magnetic resonance imaging (MRI) device as described in claim 1, characterized in that, The pressure relief valve includes a spring and a blocking element. The spring is connected to the blocking element. The spring is configured to compress when the pressure in the exhaust pipe reaches a threshold value of the spring, thereby moving the blocking element to open the pressure relief valve.
3. The venting device for a magnetic resonance imaging (MRI) device as described in claim 2, characterized in that, The spring is configured to reset when the pressure in the exhaust pipe drops below a threshold value of the spring, thereby causing the blocking element to close the pressure relief valve.
4. The venting device for a magnetic resonance imaging (MRI) device as described in claim 1, characterized in that, The pressure relief valve also includes a manual valve, allowing operators to manually control the opening and closing of the pressure relief valve.
5. The venting device for a magnetic resonance imaging (MRI) device as described in claim 1, characterized in that, The venting device also includes a pressure sensor, which is installed in the exhaust pipe and used to detect the pressure inside the exhaust pipe.
6. The venting device for a magnetic resonance imaging (MRI) device as described in claim 5, characterized in that, The venting device also includes a controller, and the pressure sensor is electrically connected to the controller, transmitting a pressure signal to the controller; The controller is electrically connected to the valve of the pressure relief valve, and the controller controls the opening and closing of the valve according to the pressure signal.
7. The venting device for a magnetic resonance imaging (MRI) device as described in claim 5, characterized in that, The venting device also includes a display panel, and the pressure sensor is electrically connected to the display panel so that the display panel displays the pressure inside the exhaust pipe.
8. The venting device for a magnetic resonance imaging (MRI) device as described in claim 5, characterized in that, The pressure sensor is remotely connected to a remote controller, which is configured to remotely control the opening and closing of the pressure relief valve based on the pressure signal from the pressure sensor.
9. The venting device for a magnetic resonance imaging (MRI) device as described in claim 1, characterized in that, The pressure relief valve is configured to close when the pressure in the exhaust pipe is lower than a preset threshold, thereby preventing gas inside the magnet from entering the quench tube through the exhaust pipe.