CN205248022U - Magnet quenching exhaust system , pressure control system and magnetic resonance imaging equipment - Google Patents
Magnet quenching exhaust system , pressure control system and magnetic resonance imaging equipment Download PDFInfo
- Publication number
- CN205248022U CN205248022U CN201520905672.7U CN201520905672U CN205248022U CN 205248022 U CN205248022 U CN 205248022U CN 201520905672 U CN201520905672 U CN 201520905672U CN 205248022 U CN205248022 U CN 205248022U
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- quench
- elbow
- valve
- hatch
- super
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- 238000010791 quenching Methods 0.000 title claims abstract description 120
- 238000002595 magnetic resonance imaging Methods 0.000 title claims abstract description 10
- 230000000171 quenching effect Effects 0.000 title abstract description 3
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000013022 venting Methods 0.000 claims 3
- 239000003507 refrigerant Substances 0.000 abstract description 14
- 238000007789 sealing Methods 0.000 description 17
- 238000001514 detection method Methods 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The utility model discloses a magnet quenching exhaust system, include: one loses super elbow, a super valve of mistake and an exhaust duct, wherein, lose super elbow one end and exhaust duct links to each other, lose super valve position in lose the inside of the super elbow other end, it is being close to to lose super elbow the one side of losing super valve has one and can open the sealed hatch that loses super valve and detect or keep in repair. Furthermore, the utility model also discloses a pressure control system and a magnetic resonance imaging equipment of the refrigerant container. The utility model discloses a technical scheme can conveniently detect or maintain losing super valve, improves the efficiency of losing super valve and detecting and maintain.
Description
Technical Field
The utility model relates to the field of medical equipment, especially a magnet quench exhaust system, refrigerant container's pressure control system and magnetic resonance imaging equipment.
Background
In superconducting magnet refrigeration systems that require a constant magnetic field to be achieved by cooling the superconducting magnet, such as in Magnetic Resonance Imaging (MRI) equipment, the superconducting magnet is typically placed in a cryogen vessel (cryogenic container) that is in turn placed within an external vacuum chamber, the space between the vacuum chamber and the cryogen vessel being evacuated to provide effective thermal insulation for the cryogen vessel. Further, in order to reduce the radiant heat between the vacuum chamber and the cryogen vessel, a thermal radiation shield is sometimes provided between the vacuum chamber and the cryogen vessel.
In cooling, the superconducting magnet is cooled to a predetermined temperature, i.e., an operating temperature, by boiling a liquid cryogen (e.g., liquid helium) in a cryogen vessel. However, in some cases the superconducting magnet will quench, for example, when a field reduction is required in the event of certain dangerous conditions, the magnet will quench and the electromagnetic energy will be converted into heat energy, which will raise the temperature of the magnet, which in turn will cause a large amount of evaporation of the liquid cryogen (e.g., liquid helium) and a rapid rise in pressure within the container in a short period of time. If the volatilized refrigerant gas cannot be discharged in time, the pressure in the container exceeds the designed pressure, which causes damage to the container, and is very dangerous, so that the existing superconducting magnet refrigerating system is provided with a pressure control system of the refrigerant container, including an exhaust pipeline, a safety valve and the like. For example, for pressure control over a quench time, a quench valve and corresponding exhaust line are typically provided. In addition, in order to avoid the situation that the exhaust channel cannot be opened due to damage of the quench valve when the magnet loses time, a rupture disk bypass is arranged, and when the quench valve cannot be opened, the rupture disk is ruptured to open the exhaust channel. In addition, in order to control the pressure fluctuation which may be generated by the cryogen vessel in the case of normal operation of the superconducting magnet, the pressure control system is also provided with a pressure regulating valve which opens when the pressure in the cryogen vessel exceeds a set threshold.
FIG. 1 is a schematic block diagram of a present magnet quench exhaust system; fig. 2 is a schematic structural diagram of a magnet quench exhaust system in one current application example. As shown in fig. 1 and 2, the quench exhaust system includes: a quench valve body 1, a quench valve 2, a quench elbow 3 and an exhaust pipe 4. Wherein, one end of the quench valve body 1 is connected with the quench elbow 3, and the other end is connected with a service tower outer cover 5 connected with a refrigerant container; the other end of the quench elbow 3 is connected with the exhaust pipe 4. The quench valve 2 is positioned in the quench valve body 1 and used for communicating the service tower outer cover 5 with the quench elbow 3 when the valve is opened, and discharging high-pressure gas in a refrigerant container from an exhaust pipeline 4 on the other side of the quench elbow 3. In some applications, the quench elbow 3 may be a multi-channel elbow having, in addition to the channel connection 31 to the quench valve body 1, a channel connection 32 to the rupture disk bypass and a channel connection 33 to the pressure regulating valve for conducting the gas in the respective channels into the exhaust line 4.
In practical application, before the superconducting magnet is subjected to field rising, and after the superconducting magnet opens the quench valve 2 due to quench, the quench valve 2 needs to be detected to determine whether various conditions of the superconducting magnet can meet requirements, for example, whether the sealing performance of an O-ring of the superconducting magnet can meet the requirements or not. In addition, some quench valves 2 with rupture disks need to be replaced by detecting whether the rupture disks are broken.
At present, when the quench exhaust system based on the structure shown in fig. 1 and 2 detects the quench valve 2, the quench valve 2 can be detected only by disconnecting the connection between the exhaust pipe 4 and the quench elbow 3 and detaching the quench elbow 3; sometimes, the quench valve body 1 also needs to be disassembled, and the components of the quench valve 2 need to be replaced. This is time consuming and difficult to remove from the limited space of the installed MRI equipment; on the other hand, when the quench valve body 1 and the quench valve are disassembled, the magnet needs to be depressurized, which is time-consuming, wastes refrigerant gas, and also exposes the magnet to air, causing air to enter and freeze. In addition, when the rupture disk is broken and needs to be replaced, the rupture disk is expected to be replaced as soon as possible, but the existing process obviously cannot meet the requirement of quick replacement of the rupture disk.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a magnet quench exhaust system on the one hand, on the other hand provides a pressure control system and magnetic resonance imaging equipment of refrigerant container for conveniently detect or maintain the quench valve, improve the efficiency that the quench valve detected and maintained, further ensure the security of refrigerant container.
The utility model discloses in provide a magnet quench exhaust system, include: a quench elbow, a quench valve and an exhaust pipe; wherein,
the first end of the quench elbow is connected with the exhaust pipeline;
the quench valve is located inside the second end of the quench elbow;
the quench elbow includes a seal hatch located in a side wall of the second end of the quench elbow and openable.
In one embodiment, the sealed hatch has a hatch body, a sealing gasket, a sealing cover plate, and a plurality of screws for securing the sealing gasket and sealing cover plate to the hatch body.
In one embodiment, the second end of the quench elbow is adapted to be coupled to a service tower housing to which a cryogen vessel housing the magnet is attached.
In one embodiment, the quench elbow also has a first channel connection to a rupture disk bypass and a second channel connection to a pressure regulating valve.
The utility model provides a pressure control system of refrigerant container, including the magnet quench exhaust system of any kind of above-mentioned realization form.
The present invention provides a magnetic resonance imaging apparatus, comprising a pressure control system of the above-mentioned cryogen vessel.
According to the scheme, the quench valve body is removed, so that the quench elbow has a larger operable space at one side close to the quench valve, and a sealing hatch capable of being opened for quenching valve detection or maintenance is arranged at one side close to the quench elbow, namely, a detection hatch is arranged at one side close to the quench valve of the quench elbow, and the detection hatch is in a hatch sealing state when the quench valve detection or maintenance is not needed, so that the sealing requirement of the whole quench exhaust pipeline is not influenced; when the quench valve needs to be detected or maintained, the hatch is used for detecting or maintaining, the quench elbow does not need to be detached, time is saved, detection and maintenance of the quench valve are facilitated, the efficiency of detection and maintenance of the quench valve is improved, and the safety of a refrigerant container is further ensured.
Furthermore, in one embodiment, the sealing hatch is sealed with a sealing cover plate, a sealing gasket, and screws, so that it is convenient to operate when the inspection hatch is opened.
Drawings
The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings, in which:
Fig. 1 is a schematic structural view of a magnet quench exhaust system of the prior art.
Fig. 2 is a schematic structural diagram of a magnet quench exhaust system in one current application example.
Fig. 3 is a schematic structural diagram of a magnet quench exhaust system in an embodiment of the present invention.
Fig. 4 and 5 are schematic structural diagrams of a magnet quench exhaust system in an example of application of the present invention. Wherein, FIG. 4 is a schematic view of the hatch when sealed; fig. 5 is a schematic view when the hatch is open.
Wherein the reference numbers are as follows:
| reference numerals | Means of |
| 1 | Quench valve body |
| 2 | Quench valve |
| 3、6 | Quench bend |
| 4 | Exhaust pipe |
| 5 | Service tower outer cover |
| 61 | Sealed hatch |
| 611 | Hatch body |
| 612 | Sealing cover plate |
| 613 | Screw with a thread |
| 31 | Channel interface connected with quench valve body |
| 62 | Channel interface for connection to a service tower housing |
| 32、63 | Channel interface connected with rupture disk bypass |
| 33、64 | Channel interface connected with pressure regulating valve |
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail by referring to the following embodiments.
Fig. 3 is a schematic structural diagram of a magnet quench exhaust system in an embodiment of the present invention. Fig. 4 and 5 are schematic structural diagrams of a magnet quench exhaust system in an example of application of the present invention. Wherein, FIG. 4 is a schematic view of the hatch when sealed; fig. 5 is a schematic view when the hatch is open. With reference to fig. 3 to 5, it can be seen that the magnet quench exhaust system of the present invention includes: a quench elbow 6, a quench valve 2 and an exhaust pipe 4.
Wherein the quench elbow 6 has a first end and a second end; a first end of the quench elbow 6 is connected to the exhaust pipe 4.
The quench valve 2 is located inside the second end of the quench elbow 6.
In this embodiment, the quench elbow 6 has a seal hatch 61 capable of being opened for detection or maintenance of the quench valve 2 on the side where the quench valve 2 is located, i.e., the seal hatch 61 capable of being opened is provided on the side wall of the second end of the quench elbow 6.
The seal hatch 61 in this embodiment has a hatch body 611, a seal gasket (not shown), a seal cover plate 612, and a plurality of screws 613 for fixing the seal gasket and the seal cover plate 612 to the inspection hatch 611.
The utility model discloses an in other embodiments, sealed hatch 61 also can have other structures and implementation, for example can be the seal structure of jump ring buckle, or also can be the seal structure of hasp etc.. The specific implementation form is not limited herein.
In addition, the quench elbow 6 in this embodiment may also be a multi-pass elbow. For example, in addition to the port 62 connected to the service tower housing 5, a port 63 connected to a rupture disk bypass and a port 64 connected to a pressure regulating valve may be provided. In addition, in other embodiments, the quench elbow 6 may have a different implementation and channel interface than that shown. It is not limited herein.
In this embodiment, the other end of the quench elbow 6 is connected to a service tower housing 5 that is connected to a cryogen vessel that houses the superconducting magnet; accordingly, the quench valve 2 may be mounted on the service tower housing 5.
Embodiments of the present invention provide a pressure control system for a cryogen vessel that may include any of the above-described embodiments of the magnet quench vent system.
The magnetic resonance imaging apparatus provided in the embodiments of the present invention may include the pressure control system of the cryogen vessel described above.
Because the quench valve body is removed in the utility model, the quench elbow has the function of the quench valve body, so that the quench elbow has a larger operable space at one side close to the quench valve, and a sealing hatch which can be opened for the detection or maintenance of the quench valve is arranged at one side close to the quench elbow, namely, a detection hatch is opened at one side close to the quench valve of the quench elbow, and the detection hatch is in a hatch sealing state when the quench valve detection or maintenance is not needed, so that the sealing requirement of the whole quench exhaust pipeline is not influenced; when the quench valve needs to be detected or maintained, the hatch is used for detecting or maintaining, the quench elbow does not need to be detached, time is saved, detection and maintenance of the quench valve are facilitated, the efficiency of detection and maintenance of the quench valve is improved, the safety of a refrigerant container is further ensured, and waste of refrigerant gas is also avoided. In addition, the operator does not need to be exposed to the refrigerant gas when the quench valve is detected, and the injury to the operator is reduced.
In addition, in one embodiment, the sealed hatch is sealed by using a sealing cover plate, a sealing gasket and screws, so that the operation is convenient when the hatch main body is opened.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A quench venting system for a magnet, comprising: a quench elbow (6), a quench valve (2) and an exhaust pipe (4); wherein,
the first end of the quench elbow (6) is connected with the exhaust pipeline (4);
the quench valve (2) is located inside the second end of the quench elbow (6);
the quench elbow (6) comprises a seal hatch (61), the seal hatch (61) being located in a side wall of the second end of the quench elbow (6) and being openable.
2. The quench exhaust system of claim 1 wherein the seal hatch (61) has a hatch body (611), a seal gasket, a seal cover plate (612), and a plurality of screws (613) for securing the seal gasket and seal cover plate (612) to the hatch body (611).
3. The quench venting system of claim 1 or 2 wherein the second end is coupled to a service tower housing that is coupled to a cryogen vessel that houses the magnet.
4. Quench exhaust system according to claim 1 or 2, characterized in that the quench elbow (6) also has a first channel connection (63) connected to a rupture disk bypass and a second channel connection (64) connected to a pressure regulating valve.
5. A pressure control system for a cryogen vessel, comprising a quench venting system as claimed in any of claims 1 to 4.
6. A magnetic resonance imaging apparatus comprising the pressure control system of the cryogen vessel of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905672.7U CN205248022U (en) | 2015-11-13 | 2015-11-13 | Magnet quenching exhaust system , pressure control system and magnetic resonance imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520905672.7U CN205248022U (en) | 2015-11-13 | 2015-11-13 | Magnet quenching exhaust system , pressure control system and magnetic resonance imaging equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205248022U true CN205248022U (en) | 2016-05-18 |
Family
ID=55947104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520905672.7U Active CN205248022U (en) | 2015-11-13 | 2015-11-13 | Magnet quenching exhaust system , pressure control system and magnetic resonance imaging equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205248022U (en) |
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2015
- 2015-11-13 CN CN201520905672.7U patent/CN205248022U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |