Array distributed high-purity germanium detector hybrid refrigeration system

Abstract

The utility model discloses an array distribution type high-purity germanium detector mixed refrigerating system which comprises a nitrogen generating device, a main gas pipe and a main liquid pipe, the main gas pipe and the main liquid pipe are connected with the nitrogen generating device, and high-purity germanium detector mixed refrigerating devices distributed in an array mode are arranged on the main gas pipe and the main liquid pipe. Each high-purity germanium detector mixed refrigeration device comprises a liquid nitrogen container, and the liquid nitrogen container is further provided with an air inlet pipe with one end inserted into the liquid nitrogen container and one end connected with the main air pipe and a liquid inlet pipe with one end inserted into the liquid nitrogen container and one end connected with the main liquid pipe. According to the scheme, a plurality of high-purity germanium detector mixed refrigeration devices are integrated and connected through the distributed bus, and the same nitrogen source and liquid nitrogen source can be shared, so that mixed refrigeration of the array distributed high-purity germanium detectors is realized, and all the high-purity germanium detectors are in the optimal working state.

Description

TECHNICAL FIELD

[0001] The utility model relates to a low temperature refrigerating system of high purity germanium detector, especially relates to an array distribution type high purity germanium detector mixed refrigerating system. BACKGROUND

[0002] High purity germanium detector is widely used in environmental protection, nuclear power, national security, scientific research and other fields because of its excellent energy resolution and higher detector efficiency. However, high purity germanium detector needs to be close to the low temperature environment of liquid nitrogen temperature when working, so it needs a refrigerating system to provide low temperature environment for it, and the cold source of liquid nitrogen refrigeration is usually used to provide low temperature environment in the prior art, but there is a great economic loss every day when liquid nitrogen is stored, and it needs to be replenished frequently, especially in remote areas, and there is great inconvenience for the acquisition of liquid nitrogen. SUMMARY

[0003] The utility model provides a kind of array distribution type high purity germanium detector mixed refrigerating system, can make full use of the surplus power of each mixed refrigerating device, quickly realize the intercommunication and supply between each mixed refrigerating device, can satisfy the demand of a large amount of liquid nitrogen in short time, or pursue stable high purity germanium mixed refrigerating system application scene, significantly increase the fault tolerance of single system operation.

[0004] According to the array distribution type high purity germanium detector mixed refrigerating system provided by the application, it comprises: a nitrogen generation device, a total gas pipe and a total liquid pipe connected with the nitrogen generation device, and each high purity germanium detector mixed refrigerating device is arranged in an array on the total gas pipe and the total liquid pipe.

[0005] In some embodiments, each high purity germanium detector mixed refrigerating device can include: a liquid nitrogen container, an air inlet pipe inserted into the liquid nitrogen container at one end and connected with the total gas pipe at the other end, and a liquid inlet pipe inserted into the liquid nitrogen container at one end and connected with the total liquid pipe at the other end.

[0006] In some embodiments, each air inlet pipe is provided with an air inlet switch.

[0007] In some embodiments, each liquid inlet pipe is provided with a liquid inlet switch.

[0008] In some embodiments, the total gas pipe connected with the output end of the nitrogen generation device is further provided with a dryer.

[0009] In some embodiments, the total gas pipe is further provided with a pressure controller connected with the output end of the dryer.

[0010] In some embodiments, each high purity germanium detector mixed refrigerating device further includes an air release switch and a liquid discharge pipe.

[0011] In some embodiments, an external liquid discharge pipe and an external liquid discharge switch are further arranged on the total liquid pipe.

[0012] In some embodiments, the liquid nitrogen container is a Dewar flask.

[0013] In some embodiments, the nitrogen generating device is an air compressor type nitrogen generator.

[0014] The technical scheme provided by the embodiments disclosed in the present application has the following beneficial effects:

[0015] The array distributed high-purity germanium detector hybrid refrigeration system provided by the present application comprises: a nitrogen generating device, a total gas pipe and a total liquid pipe connected with the nitrogen generating device, and each high-purity germanium detector hybrid refrigeration device arranged in an array on the total gas pipe and the total liquid pipe. In the present application, the remaining power of each hybrid refrigeration device can be utilized to quickly realize intercommunication and supply between each hybrid refrigeration device, so as to meet the demand for a large amount of liquid nitrogen in a short time or to pursue a stable high-purity germanium hybrid refrigeration system application scenario, and the fault tolerance rate during operation of a single system is significantly increased. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application, the drawings used in the present application will be briefly introduced as follows.

[0017] Figure 1 is a schematic diagram of the working principle of a single hybrid refrigeration device in the prior art;

[0018] Figure 2 is a schematic diagram of the working principle of a high-purity germanium detector hybrid refrigeration device in the prior art;

[0019] Figure 3 is a schematic diagram of the structure of an array distributed high-purity germanium detector hybrid refrigeration system according to some embodiments of the present application. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0021] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0022] Reference Figure 1 The figure is a schematic diagram of the working principle of a single hybrid refrigeration device in the prior art.

[0023] The single hybrid refrigeration unit includes a Dewar jar 1, a cryogenic refrigerator 2, a pressure measuring device 3, and liquid nitrogen 4 inside the container. The entire hybrid refrigeration unit is sealed, and the cryogenic refrigerator in pressure control mode liquefies the evaporating liquid nitrogen, reducing the consumption of liquid nitrogen.

[0024] refer to Figure 2 This figure is a schematic diagram of the working principle of a hybrid cooling device with a high-purity germanium detector in the prior art.

[0025] The hybrid cooling device with a high-purity germanium detector includes the aforementioned Dewar jar 1, cryogenic refrigerator 2, pressure measuring device 3, and liquid nitrogen 4 inside the container. It also includes a detector cooling finger 5, a high-purity germanium detector 6, a cooling copper rod 7, and a vacuum chamber 8. The high-purity germanium detector 6 is placed in the vacuum chamber 8, and the detector cooling finger 5 is inserted into the liquid nitrogen 4 and cooled by the liquid nitrogen.

[0026] refer to Figure 3 The figure is a schematic diagram of the structure of a hybrid cooling system for an array-distributed high-purity germanium detector according to some embodiments of this application.

[0027] In one specific embodiment of the present invention, a hybrid cooling system for array-distributed high-purity germanium detectors includes: a nitrogen generator 301, a main gas pipe 302 and a main liquid pipe 303 connected to the nitrogen generator 301, and array-distributed hybrid cooling devices for each high-purity germanium detector are provided on the main gas pipe 302 and the main liquid pipe 303.

[0028] In specific implementation, the nitrogen generating device 301 may be an air compressor-type nitrogen generator or other devices that can separate nitrogen, and no specific limitation is made here.

[0029] Each high-purity germanium detector hybrid cooling device includes a liquid nitrogen container 304. The liquid nitrogen container 304 is provided with an air inlet pipe 305, one end of which is inserted into the liquid nitrogen container 304 and the other end is connected to the main gas pipe 302, and a liquid inlet pipe 306, one end of which is inserted into the liquid nitrogen container 304 and the other end is connected to the main liquid pipe 303. In specific implementation, each high-purity germanium detector hybrid cooling device is also provided with an air inlet switch 307 and a liquid inlet switch 308. That is, in this embodiment, an air inlet switch 307 is provided on the air inlet pipe 305 and a liquid inlet switch 308 is provided on the liquid inlet pipe 306.

[0030] In practice, the liquid nitrogen container described in this application may be a Dewar flask or other container that can hold and transport nitrogen gas, and no specific limitation is made here.

[0031] Additionally, it should be noted that each liquid nitrogen container 304 in this application is also equipped with a venting switch 309 and a drain pipe 310. A draining switch 311 is also provided on the drain pipe 310. In actual operation, the useless gas in the liquid nitrogen container 304 can be discharged through the venting switch 309, while the drain pipe 310 can discharge the liquid nitrogen to the outside for cooling or use through the main liquid pipe. This will not be elaborated further here.

[0032] It should be noted that, in order to reduce or eliminate moisture in the nitrogen generated by the nitrogen generating device, a dryer 312 (or drying device) is also provided on the main gas pipe connected to the output end of the nitrogen generating device. In addition, a pressure controller 313 (or pressure control device) connected to the output end of the dryer is also provided on the main gas pipe.

[0033] In a specific implementation, this application also provides an external drain pipe 314 and an external drain switch 315 on the distributed main liquid pipe. Liquid nitrogen can be output to the outside for refrigeration or other functions through the external drain pipe 314 and the external drain switch 315. No specific limitations are made here.

[0034] When only one high-purity germanium detector hybrid cooling device is needed, the liquid inlet switch 312 on the high-purity germanium detector hybrid cooling device can be opened. In this case, the high-purity germanium detector hybrid cooling device 04 becomes a high-power cooling device to meet the cooling needs of the high-purity germanium detector, while other high-purity germanium detector hybrid cooling devices are in standby mode.

[0035] The detailed operation of the system is explained below. When a single mixing refrigeration unit within the system requires liquid nitrogen, the required amount is determined. If the demand is small, the nitrogen generator is activated, and the inlet switch of the container in that mixing refrigeration unit is opened, utilizing its remaining power to replenish the nitrogen. When the demand is large and time is urgent, the nitrogen generator is activated, along with the inlet and drain switches of the containers in other mixing refrigeration units, and the liquid inlet and exhaust switches of the required mixing refrigeration unit, allowing for short-term replenishment. For liquid nitrogen discharge, the inlet and drain switches of all containers in the mixing refrigeration units are opened, along with the external drain switch, enabling external discharge of large quantities of liquid nitrogen within a short period. After discharge is complete, the external drain switch and the drain switch are closed, and the system automatically replenishes liquid in each container.

[0036] As can be seen from the above scheme, the array distributed high-purity germanium detector hybrid cooling system of this utility model can make full use of the remaining power of each high-purity germanium detector hybrid cooling device, and quickly realize the interconnection and replenishment between each high-purity germanium detector hybrid cooling device. It can meet the demand for a large amount of liquid nitrogen in a short time, or the application scenario of pursuing a stable high-purity germanium hybrid cooling system, and significantly increase the fault tolerance rate of a single system during operation. Moreover, the system is an open control system, which can realize distributed expansion layout according to needs.

[0037] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An array distributed high-purity germanium detector hybrid refrigeration system, characterized in that, The application relates to a nitrogen generating device, a total gas pipe and a total liquid pipe connected with the nitrogen generating device, and each high-purity germanium detector mixed refrigerating device arranged on the total gas pipe and the total liquid pipe. Each high-purity germanium detector mixed refrigerating device comprises a liquid nitrogen container, an air inlet pipe with one end inserted into the liquid nitrogen container and the other end connected with the total gas pipe, and a liquid inlet pipe with one end inserted into the liquid nitrogen container and the other end connected with the total liquid pipe.

2. The system of claim 1, wherein, An air inlet switch is arranged on each air inlet pipe.

3. The system of claim 2, wherein, A liquid inlet switch is arranged on each liquid inlet pipe.

4. The system of claim 2, wherein, A drier is arranged on the total gas pipe at the output end of the nitrogen generating device.

5. The system of claim 1, wherein, A pressure controller connected with the output end of the drier is further arranged on the total gas pipe.

6. The system of claim 5, wherein, Each high-purity germanium detector mixed refrigerating device further comprises an air outlet switch and a liquid outlet pipe.

7. The system of claim 1, wherein, An external liquid outlet pipe and an external liquid outlet switch are further arranged on the total liquid pipe.

8. The system of claim 1, wherein, The liquid nitrogen container is a Dewar flask.

9. The system of claim 2, wherein, The nitrogen generating device adopts an air compressor type nitrogen generator.

10. The system of claim 1, wherein, ​

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