A detector air-cooling test device

Abstract

The invention discloses a detector air cooling test device, characterized in that it comprises a gas cooling device (1), a flow controller (2), an adjustable flow guide device (3), a cooling chamber (4), an adjustable flow disturbance device (6), a plurality of temperature measuring probes (8), and an upstream heat insulation bracket (51) and a downstream heat insulation bracket (52) located inside the cooling chamber (4) for supporting the detector; wherein one end of the gas cooling device (1) is used to be connected to a gas source, and the other end is connected to the inlet end of the cooling chamber (4) via the flow controller (2) and the adjustable flow guide device (3) in sequence; an adjustable flow disturbance device (6) is arranged on the inner wall of the cooling chamber between the upstream heat insulation bracket (51) and the downstream heat insulation bracket (52); and each temperature measuring probe is used to measure the temperature at each set position of the detector. The invention can measure the cooling effect of the detector under different environments, so as to study and obtain a better detector air cooling scheme.

Description

Technical Field

[0001] The invention relates to a cooling test device, in particular to a cooling measurement device for cooling a detector by using gas, and belongs to the technical field of gas cooling test. Background Art

[0002] Silicon pixel detector technology with high spatial resolution plays an increasingly important role in the fields of materials science, biochemistry, aerospace, and high-energy physics. Due to its excellent detection and position resolution performance, silicon pixel detectors can be used for high-precision imaging, particle track reconstruction of next-generation high-energy physics facilities, etc. Especially in the particle track reconstruction of large high-energy physics facilities, such as the high-energy circular electron-positron collider, the preliminary planning scheme for its vertex detector is to use multiple detector modules that are stacked on each other and arranged into barrel structures with different diameters. These detector modules work together to achieve track measurement and achieve the purpose of vertex detection. Each detector module consists of a support structure, a circuit board, and a detector chip. The detector chip on the detector module can be installed on one side or both sides relative to the support structure. The heat generation power of the detection chip in normal working state is generally 100-200mW / cm 2 It is expected to be controllable at 50mW / cm in the future 2 Within 10000, the cooling of the detector module, compared with liquid cooling, has the most obvious advantage of low mass, reducing the multiple scattering effect caused by the material, maintaining high detection accuracy, and is more suitable for the requirements of the next generation of colliders. Therefore, the cooling method of the vertex detector in the future tends to adopt a gas cooling solution. The vertex detector module is usually a strip structure. Although the total detection area is not large, its width is narrow and the length is relatively long. The main reason is that due to the structural limitations of the detector, the cooling airflow flowing through the detector, regardless of the type of airway (such as a generally straight airway or a spiral airway), can generally only flow from one side of the detector to the other side. This will cause the detector module to have a good cooling effect on the detection chip in the upstream part near the cooling gas inlet, while the cooling effect of the cooling chip in the downstream part near the cooling gas outlet is poor due to the heat brought by the upstream airflow, that is, along the cooling airflow direction, the detector chip produces a temperature gradient. The detection accuracy of the silicon pixel detector is sensitive to temperature. As the temperature rises, the leakage current increases, and the detector noise increases accordingly, resulting in a decrease in detection accuracy; if the temperature is too high, the detector will be damaged. Therefore, the cooling control goal of the detector module is, on the one hand, to control the chip temperature of each part to cool to a suitable working temperature, and on the other hand, to minimize the temperature gradient of the chip along the longitudinal direction of the detector module to reduce the detection accuracy differences caused by the temperature gradient in different areas.

[0003] For high-resolution pixel detectors like the Vertex detector, cooling test of the detector's air cooling system is a critical task. Based on the cooling effect of the detector under different flow and airflow conditions, the optimal cooling plan can be evaluated and formulated; at the same time, the test results can guide the design of the detector's own structure and overall support structure. Currently, there is no device or similar device available on the market for cooling test of such air-cooled detectors. Summary of the invention

[0004] Aiming at the air-cooling test of silicon (apex) track detector modules, the purpose of the present invention is to propose a detector air-cooling test device. The air-cooling test device of the present invention can provide a cooling test environment under different airflow conditions for a single detector (module of the overall detector), and measure the cooling effect of the detector under different environments, so as to study and derive a better detector air-cooling scheme, summarize the reasonable parameters of the airflow regulating devices of each part, and guide the detector to achieve a good cooling effect under air cooling, and control the uniform temperature or a smaller gradient along the airflow direction to ensure detection accuracy. The test results of the invention can also verify and guide the structural design of the detector module and the detector as a whole.

[0005] The single detector air-cooling test device in the present invention is a test device with the functions of pre-cooling the upstream gas, adjusting the gas flow, inlet diversion, turbulence in the airway, outlet opening, etc., and can measure the temperature of the detector in a non-contact or contact manner or a combination of the two. It is suitable for detectors with forced air cooling, especially those with a long longitudinal length, relatively small lateral dimensions, and strict control of the temperature and gradient of the detector under air cooling. The detection module can install detection chips on one or both sides of its supporting structure, and obtain gas environments with different flow rates and flow states through the relevant airflow adjustment function of the device. By monitoring the surface temperature of the detector, the cooling effect under different states can be measured, and the optimized air-cooling configuration plan for the given detector can be summarized and judged to achieve both good cooling effect and small temperature rise gradient.

[0006] The technical solution of the present invention is:

[0007] An amplitude measuring device for an ultralight beam, characterized in that the device comprises an upstream gas cooling device 1, a flow controller 2, an adjustable flow guide device 3, a cooling chamber 4, a detector 5 and an upstream heat insulation bracket 51, a downstream heat insulation bracket 52, an adjustable flow disturbance device 6, an outlet opening adjustment device 7, and a temperature probe 8 (which can be a non-contact temperature measuring instrument 81, such as an infrared temperature measuring instrument, or a contact probe 82, such as a thermocouple sensor installed on the detector 5). The signal line and power line of the detector and the line of the contact temperature measuring sensor are led out along the downstream outlet.

[0008] The device is provided with monitoring probes for the inlet and outlet gas temperatures, on the one hand to be able to grasp the actual temperature of the cooling gas, on the other hand this parameter is used for the later system calculation compound. The implementation can be carried out by installing thermocouple sensors suspended in the inlet area and the outlet area of ​​the cooling cavity to measure the gas temperature.

[0009] The gas coming from the gas source is first cooled by the gas cooling device 1, which consists of a cooling chamber and a cooling medium (which can be a cooling medium such as dry ice or an ice-water mixture) and an air pipe arranged along a tortuous direction to increase the heat exchange area. The flow rate is then adjusted by the flow controller 2, and then enters the adjustable flow guide device 3, and then enters the cooling chamber channel.

[0010] Furthermore, the adjustable flow guiding device 3 is composed of an air inlet cavity 31 and a plurality of flow guiding plug-ins 32 .

[0011] The adjustable flow guide device 3 adjusts the flow guide effect by adjusting the number, insertion depth, direction, etc. of the flow guide plug-ins, so as to allow the gas to flow into the cooling cavity at a uniform flow rate (which can be adjusted as needed, such as horizontal differences) after passing through the air inlet cavity.

[0012] The cooling chamber 4 is composed of a cooling chamber upper cover 41 and a cooling chamber bottom plate 42. An insulating bracket is provided in the chamber. The detector 5 is installed in the cooling chamber channel through the insulating brackets 51 and 52 at both ends. A bracket made of insulating material or a non-insulating bracket with an insulating gasket between it and the detector 5 is used for insulation to avoid the influence of heat conduction on the measurement of the air cooling effect.

[0013] Furthermore, the detector 5 is positioned longitudinally along the axis of the cooling chamber in the cooling chamber, and can be placed horizontally or vertically in the transverse direction.

[0014] Furthermore, the cross-sectional size of the cooling cavity channel has priority. At the joint between the air intake cavity and the cooling cavity, the cross-sectional area of ​​the air intake cavity should match the inner surface of the cooling cavity channel shell, and the transition should be smooth.

[0015] The gas enters the cooling cavity channel through the adjustable flow guide device 3. The cross-sectional size of the airflow channel near the detector 5 is changed by the adjustment of the adjustable flow disturbance device 6 in the cooling cavity 4, and the gas flow direction and speed are changed.

[0016] Further, the adjustable spoiler device 6 can be composed of a plurality of spoiler blocks of different specifications, the spoiler blocks form a convex structure from the cooling cavity wall to the detector direction, the spoiler blocks of different specifications have different heights, and the spoiler effect is achieved by adjusting the convex height through spoiler blocks of different heights; the installation position of the spoiler block can be arranged on the inner wall of the cooling cavity in a single point or multiple points along the longitudinal direction of the detector as required. The adjustable spoiler device 6 can also be an inserted spoiler block, which is inserted from the outside of the cooling cavity 4 into the interior to form a convexity toward the detector 5, and the spoiler adjustment is achieved by adjusting its insertion depth, that is, the convex height; the installation position of the inserted spoiler block can be arranged on the inner wall of the cooling cavity 4 in a single point or multiple points along the longitudinal direction of the detector as required. Turbine flow is achieved by arranging and adjusting the spoiler block near the detector to adjust the ventilation gap near the detector 5. According to the Bernoulli equation, the adjustment of the ventilation gap outside the detector will cause changes in the airflow speed and direction, and the gradual spoiler block height will produce a gradual ventilation gap, thereby obtaining a gradual airflow speed and a gradual cooling effect. The spoilers arranged at multiple points should be higher and higher along the airflow direction, that is, the ventilation gap gradually becomes smaller and the airflow velocity gradually increases to reduce the temperature gradient. The width of the spoiler should be as close as possible to the cross-sectional width of the cooling cavity to reduce the diversion of the airflow in the lateral gap. The height direction of the spoiler is perpendicular to the plane direction of the detector.

[0017] Furthermore, the adjustable spoiler device 6 can also be realized by installing a spoiler 61 in the cooling chamber 4, and the spoiler 61 can be a straight plate or a plate with a curved arc. The two ends of the spoiler 61 are supported and fixed on two brackets 611, and the two brackets are installed on the wall of the cooling chamber 4 in an inserting manner. One or both of the two brackets can be adjusted in height, which has the advantage of realizing interference-free adjustment outside the cavity and avoiding the situation where the cooling chamber can only be adjusted by disassembling. One end of the spoiler is hingedly supported with the bracket, and the other end is hinged + slidingly supported with the bracket, that is, structurally, the spoiler is hinged with the bracket on one side, and the two are connected by the shaft and the hole; on the side where the spoiler and the bracket are hinged + slidingly supported, the two are connected by the shaft and the long slot hole. The advantage of the support structure of the spoiler is that it has the function of adaptively adjusting the displacement of the spoiler relative to the bracket at the support node during the adjustment of the spoiler. The spoiler support structure can adjust the inclination angle of the spoiler relative to the detector plane by adjusting the insertion height of one side bracket 611 in the cooling chamber, and can also adjust the distance between the spoiler and the detector by adjusting the insertion height of the two brackets to keep the spoiler angle constant. A gradual gap is obtained by adjusting the position and angle of the spoiler, and a gradual wind speed is obtained. The inclination angle of the spoiler relative to the detector plane should be opened in the direction of the airflow inlet, that is, along the longitudinal direction of the detector. The airflow gap between the detector and the spoiler is narrowed along the airflow direction to reduce the temperature gradient. Depending on whether the detection chip on the detector 5 is installed on one side or both sides, the spoiler can be installed on one side or both sides of the detector in the cooling chamber accordingly. The width of the spoiler is as close to the cross-sectional width of the cooling chamber as possible, and the spoiler is as close to the cooling chamber wall as possible at the upstream end of the airflow to reduce the diversion of the airflow in the lateral and front gaps, and the spoiler plane faces the detector plane direction.

[0018] The gas is further adjusted by the adjustable turbulence device 6 to obtain different flow velocities along the longitudinal direction of the detector, and finally flows out through the outlet opening adjustment device 7. By adjusting the outlet opening, the gas flow state in the cooling chamber is further changed to obtain the cooling result under the complex flow state, which can provide guidance for the layout details of the detector 5 in the overall detector.

[0019] Furthermore, the outlet opening adjustment device 7 can be composed of a single baffle (installed at the end of the cooling chamber), and the opening adjustment is achieved by sliding the baffle relative to the cooling chamber cross-section; or it can be composed of a double baffle, each of which has spaced holes (of any shape), one baffle is fixed relative to the cooling chamber channel, and the other baffle can adjust the ventilation cross-section by sliding on the fixed baffle to obtain different outlet openings.

[0020] Furthermore, depending on whether the detection chip on the detector 5 is installed on one side or both sides, a non-contact or contact temperature measurement method, or a combination of the two, can be selected. If an optical non-contact measurement is used, such as an infrared thermometer, the material of the cooling chamber cover must be a transparent material, and the chamber wall should be as thin as possible so as not to affect the measurement accuracy. The non-contact temperature measuring instrument is arranged outside the cooling chamber, and its position is not fixed, and can be moved according to different temperature measurement positions on the detector 5. If a contact method is used, such as a thermocouple sensor, it is pasted on the beam for measurement according to the measurement position.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The single detector air-cooling test device in the present invention is a test device with the functions of pre-cooling the upstream gas, regulating the gas flow, inlet diversion, turbulence in the cooling chamber, outlet opening, etc., and can measure the temperature of the detector in a non-contact or contact manner or a combination of the two. It is suitable for detectors with forced air cooling, especially detectors with a long longitudinal length and a relatively small lateral size, and the working temperature of the detector is strictly controlled under air cooling while requiring the temperature gradient to be reduced. Through the various airflow adjustment functions of the device, a gas environment with different flow rates and flow states is obtained, and by monitoring the surface temperature of the detector, the cooling effect under different states is measured, and the optimized air cooling configuration scheme for a given detector with good cooling effect and small temperature rise gradient can be summarized and judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a detector air-cooled test device.

[0024] Figure 2 This is a schematic diagram of the internal structure of a detector air-cooled test device.

[0025] Figure 3 This is a side view schematic diagram of a detector air-cooled test device (the cooling chamber cover is transparent).

[0026] Figure 4 A schematic diagram of an adjustable spoiler device.

[0027] Figure 5 A side view of an articulated support structure inside a spoiler.

[0028] Figure 6 It is a schematic diagram of another embodiment of an adjustable spoiler device.

[0029] Figure 7 A side view of an internal hinged support structure of another embodiment of an adjustable spoiler.

[0030] Among them, 1-gas cooling device, 2-flow controller, 3-adjustable flow guide device, 31-air inlet chamber, 32-flow guide plug-in, 4-cooling chamber, 41-cooling chamber upper cover, 42-cooling chamber bottom plate, 5-detector, 51-upstream thermal insulation bracket, 52-downstream thermal insulation bracket, 6-adjustable spoiler device, 61-spoiler, 611-adjustable bracket, 7-outlet opening adjustment device, 8-temperature sensor, 81-non-contact thermometer, 82-contact temperature sensor. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0032] A detector air-cooling test device of the present invention is as follows Figure 1 , Figure 2 As shown, the device includes an upstream gas cooling device 1, a flow controller 2, an adjustable flow guide device 3, a cooling chamber 4, a detector 5 and an upstream insulation bracket 51, a downstream insulation bracket 52, an adjustable spoiler device 6, an outlet opening adjustment device 7, and a temperature measuring probe 8.

[0033] The temperature measuring probe 8 can be a non-contact temperature measuring instrument 81, such as an infrared temperature measuring instrument, or a contact sensor 82, such as a thermocouple sensor installed on the detector 5. The signal line and power line of the detector and the line of the contact temperature measuring sensor are led out along the downstream outlet, such as Figure 3 shown.

[0034] The adjustable flow guide device 3 is connected to the cooling chamber 4, in which a detector 5 and an upstream thermal insulation bracket 51 and a downstream thermal insulation bracket 52 for supporting and fixing the detector 5 are installed. An adjustable spoiler device 6 is arranged below the detector 5. The downstream port of the cooling chamber 4 is connected to the outlet opening adjustment device 7, from which the gas is finally discharged. The signal line and power line of the detector 5 and the line of the contact temperature sensor are also led out through the outlet, so as to facilitate the disassembly and assembly of the detector 5.

[0035] 1) The gas from the gas source is first cooled by a cooling device 1, which consists of a cooling chamber and a cooling medium (which may be a cooling medium such as dry ice or an ice-water mixture) and an air pipe arranged along a zigzag direction to increase the heat exchange area, so as to lower the air inlet temperature and reduce the maximum temperature of the detector; then the gas enters the adjustable flow guide device 3 through the flow controller 2, and enters the cooling chamber 4 after the expected flow field is obtained through the flow adjustment.

[0036] Furthermore, the adjustable flow guiding device 3 is composed of an air inlet cavity 31 and a plurality of flow guiding plug-ins 32 .

[0037] Furthermore, the cross-sectional shape of the air inlet cavity is not limited (it can be made as needed), such as rectangular, semicircular, etc.

[0038] Furthermore, the flow guide plug-in may be in different forms such as a column, a pin, a plate or a strip.

[0039] Furthermore, the guide plug-in may be installed and positioned in the air inlet cavity in a horizontal, vertical, or inclined manner.

[0040] 2) The device adjusts the flow guiding effect by adjusting the adjustable flow guiding device 3 by adjusting the number, insertion depth, direction, etc. of the flow guiding plug-ins, so as to make the gas flow into the cooling cavity 4 with a uniform flow rate (which can be adjusted as needed, such as horizontal differences) after passing through the air inlet cavity.

[0041] Furthermore, the cooling chamber 4 is composed of a cooling chamber upper cover 41 and a cooling chamber bottom plate 42 .

[0042] Furthermore, the detector 5 is installed in the cooling chamber 4 through an upstream heat-insulating bracket 51 and a downstream heat-insulating bracket 52. A bracket made of heat-insulating material or a non-heat-insulating bracket with a heat-insulating gasket between it and the detector 5 is used for heat insulation to avoid the influence of heat conduction on the measurement of the air-cooling effect. The size of the bracket should be as close as possible to the detector support structure, and the size should be as small as possible to occupy less extra space and reduce the obstruction to the air intake.

[0043] Furthermore, the detector 5 is positioned in the cooling chamber along the axis of the cooling chamber in the longitudinal direction and can be placed horizontally or vertically in the transverse direction.

[0044] Furthermore, the shape and size of the cooling cavity 4 are not unique and can be determined comprehensively based on the detector 5 and its arrangement in the overall structure of the detector. The cross-sectional size of the cooling cavity channel has priority, and the cross-sectional shape of the air inlet cavity 31 should match the cooling cavity (and the cooling cavity upper cover 41). The cross-sectional transition at the connection should be smooth.

[0045] 3) The gas enters the cooling cavity channel through the adjustable flow guide device 3. The cross-sectional size of the airflow channel near the detector 5 in the cooling cavity 4 is changed by the adjustment of the adjustable flow disturbance device 6, and the gas flow direction and speed are changed.

[0046] Further, the adjustable spoiler device 6 can be composed of a plurality of spoiler blocks of different specifications, the spoiler blocks form a convex structure from the cooling cavity wall to the detector direction, the spoiler blocks of different specifications have different heights, and the spoiler effect is achieved by adjusting the convex height through spoiler blocks of different heights; the installation position of the spoiler block can be arranged on the inner wall of the cooling cavity 4 in a single point or multiple points along the longitudinal direction of the detector module as required, and the height direction of the spoiler block is perpendicular to the plane direction of the detector. The adjustable spoiler device 6 can also be an inserted spoiler block, which is inserted from the outside of the cooling cavity 4 into the interior to form a convexity toward the detector 5, and the spoiler adjustment is achieved by adjusting its insertion depth, that is, the convexity height; the installation position of the inserted spoiler block can be arranged on the inner wall of the cooling cavity 4 in a single point or multiple points along the longitudinal direction of the detector as required. The spoiler is arranged and adjusted near the detector 5 to adjust the ventilation gap near the detector 5 to achieve spoiler. According to the Bernoulli equation, the adjustment of the ventilation gap around the detector will cause changes in the airflow rate and direction. The gradual change in the height of the spoiler will produce a gradual change in the ventilation gap, and then obtain a gradual change in the airflow speed, resulting in a gradual cooling effect. The spoilers arranged at multiple points should be higher and higher along the airflow direction, that is, the ventilation gap gradually becomes smaller and the airflow speed gradually increases to reduce the temperature gradient.

[0047] Furthermore, the adjustable spoiler device can also be realized by installing a spoiler plate 61 in the cooling cavity (such as Figure 4As shown), the spoiler 61 is a straight plate or a plate with a curved arc. The two ends of the spoiler 61 are supported and fixed on two brackets 611, and the two brackets are installed on the wall of the cooling chamber 4 in an insert type. One or both of the two brackets can be adjusted in height, which has the advantage of achieving interference-free adjustment outside the cavity and avoiding the situation where the cooling chamber can only be adjusted by disassembling it. One end of the spoiler is hingedly supported with the bracket, and the other end is hinged + slidingly supported with the bracket, that is, structurally, the spoiler is hinged to the bracket on one side, and the two are connected by the axis and the hole; on the side where the spoiler and the bracket are hinged + slidingly supported, the two are connected by the axis and the long slot hole, and the plane of the spoiler faces the plane direction of the detector. The support structure of the spoiler has the advantage of having an adaptive adjustment function for the displacement of the spoiler relative to the bracket at the support node during the adjustment of the spoiler. The spoiler support structure can adjust the inclination angle of the spoiler relative to the detector plane by adjusting the insertion height of one side bracket 611 in the cooling chamber, and can also adjust the distance between the spoiler and the detector by adjusting the insertion height of the two brackets to keep the spoiler angle constant. A gradual gap is obtained by adjusting the position and angle of the spoiler, and a gradual wind speed is obtained. The inclination angle of the spoiler relative to the detector plane should be such that its opening direction is toward the airflow inlet side, that is, along the longitudinal direction of the detector. The airflow gap between the detector and the spoiler is narrowed along the airflow direction to reduce the temperature gradient. Depending on whether the detection chip on the detector 5 is installed on one side or both sides, the spoiler can be installed on one side or both sides relative to the detector 5 in the cooling chamber accordingly.

[0048] 4) The gas is further adjusted by the adjustable turbulence device 6 to obtain different flow velocities along the longitudinal direction of the detector, and finally flows out through the outlet opening adjustment device 7. By adjusting the outlet opening, the gas flow state in the cooling chamber is further changed to obtain the cooling result under the complex flow state, which provides guidance for the arrangement details of the detector 5 in the overall detector.

[0049] Furthermore, the outlet opening adjustment device 7 can be composed of a single baffle (installed at the end of the cooling chamber), and the opening adjustment is achieved by sliding the baffle relative to the cooling chamber cross-section; or it can be composed of a double baffle, each of which has spaced holes (of any shape), one baffle is fixed relative to the cooling chamber channel, and the other baffle can adjust the ventilation cross-section by sliding on the fixed baffle to obtain different outlet openings.

[0050] 5) Depending on whether the detection chip on the detector 5 is installed on one side or both sides, you can choose to use non-contact or contact, or a combination of the two temperature measurement methods. If optical non-contact measurement is used, such as an infrared thermometer, the material of the cooling chamber cover must be transparent, and the shell wall should be as thin as possible so as not to affect the measurement accuracy. The non-contact temperature measuring instrument is arranged outside the cooling chamber, and its position is not fixed, and it can be moved according to different temperature measurement positions on the detector 5. If a contact method is used, such as a thermocouple sensor, it should be pasted on the beam for measurement according to the measurement position.

[0051] Although the specific contents of the present invention are disclosed for the purpose of illustration, the purpose is to help understand the contents of the present invention and implement them accordingly, it is understood by those skilled in the art that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. The present invention should not be limited to the contents disclosed in the best embodiment of this specification, and the scope of protection claimed by the present invention shall be subject to the scope defined in the claims.

Claims

1. A detector air-cooled test device, characterized in that: The invention comprises a gas cooling device (1), a flow controller (2), an adjustable flow guide device (3), a cooling chamber (4), an adjustable flow disturbance device (6), a plurality of temperature measuring probes (8), and an upstream heat insulation bracket (51) and a downstream heat insulation bracket (52) located inside the cooling chamber (4) for supporting the detector; wherein one end of the gas cooling device (1) is used to be connected to a gas source, and the other end is connected to the inlet end of the cooling chamber (4) via the flow controller (2) and the adjustable flow guide device (3) in sequence; an adjustable flow disturbance device (6) is provided on the inner wall of the cooling chamber between the upstream heat insulation bracket (51) and the downstream heat insulation bracket (52); and each temperature measuring probe is used to measure the temperature at each set position of the detector.

2. The detector air-cooling test device according to claim 1, characterized in that: It also includes an outlet opening adjustment device (7) for adjusting the gas discharge; the outlet end of the cooling cavity (4) is connected to the outlet opening adjustment device (7).

3. The detector air-cooling test device according to claim 2, characterized in that: The outlet opening adjustment device (7) comprises a baffle plate, which can slide relative to the airway cross section to achieve opening adjustment.

4. The detector air-cooling test device according to claim 2, characterized in that: The outlet opening adjustment device (7) comprises a first baffle and a second baffle, wherein the first baffle and the second baffle are respectively provided with a plurality of holes distributed at intervals, the first baffle is fixedly connected to the airway outlet end, and the second baffle can slide relative to the first baffle to achieve opening adjustment.

5. The detector air-cooling test device according to any one of claims 1 to 4, characterized in that: The adjustable spoiler device (6) comprises a plurality of spoiler blocks of different specifications, wherein the spoiler blocks are protruding structures extending from the cooling chamber wall toward the detector, and spoiler blocks of different specifications have different protruding heights; the installation position of each spoiler block is arranged on the inner wall of the cooling chamber in a single-point or multi-point manner along the longitudinal direction of the cooling chamber according to the temperature measurement position requirements of the detector, and when arranged in a multi-point manner, the height of the spoiler blocks along the airflow direction becomes higher and higher.

6. The detector air-cooling test device according to any one of claims 1 to 4, characterized in that: The adjustable spoiler device (6) comprises a plurality of inserted spoiler blocks, wherein the inserted spoiler blocks are inserted from the outside of the cooling cavity (4) into the inside of the cooling cavity (4) to form a protruding structure facing the detector, and the insertion depth of the inserted spoiler blocks is adjustable; the installation position of each of the inserted spoiler blocks is arranged on the cavity wall of the cooling cavity (4) in a single point or multiple points along the longitudinal direction of the cooling cavity (4) according to the temperature measurement position requirements of the detector, and when arranged in a multiple point manner, the height of the inserted spoiler blocks along the airflow direction becomes higher and higher.

7. The detector air-cooling test device according to any one of claims 1 to 4, characterized in that: Two brackets, namely a first bracket and a second bracket, are installed on the wall of the cooling cavity (4) in an inserting manner, wherein the protruding height of at least one bracket relative to the cavity wall is adjustable; the adjustable spoiler device (6) is a spoiler (61), one end of the spoiler (61) is connected to the first bracket, and the other end is connected to the second bracket.

8. The detector air-cooling test device according to claim 7, characterized in that: One end of the spoiler (61) is hingedly connected to the first bracket, and the other end of the spoiler (61) is connected to the second bracket by a butt joint between an axis and a long slot hole, thereby realizing a hinge + sliding function. The inclination angle between the spoiler (61) and the detector and the distance between the spoiler (61) and the detector are adjusted by adjusting the height of the plug-in bracket, and the opening direction of the inclination angle is toward the airflow inlet side.

9. The detector air-cooling test device according to claim 1, characterized in that: The adjustable flow guide device (3) comprises an air inlet cavity (31) and a plurality of flow guide plug-ins (32) inserted into the air inlet cavity; the number, insertion depth and direction of the flow guide plug-ins (32) are adjustable; and the temperature measuring probe is a non-contact temperature measuring instrument or a contact probe for installation on a detector.

10. The detector air-cooling test device according to claim 1, characterized in that: It also includes a second temperature measuring probe for measuring the temperature of the gas at the inlet and outlet of the cooling chamber.

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