Spectrometer with extended lifetime

Abstract

The utility model discloses a prolonging service life's spectrometer, including spectrometer main part, and spectrometer main part includes a plurality of side plates and top plate, and the upper end of a plurality of side plates is connected to the top plate, and the surrounding constitution forms the cavity of placing, is provided with the baffle in the cavity of placing and is formed with the first chamber and the second chamber of independent each other with the cavity of placing separation, the front side of spectrometer main part corresponds the first chamber and the second chamber department respectively is provided with the air outlet, is equipped with the shielding box of aluminium material in the second chamber, is provided with high -voltage generator in the shielding box, the rear side of spectrometer main part corresponds the position of the first chamber and the second chamber respectively is provided with first radiating fan and second radiating fan, the lower end surface of spectrometer main part still is provided with the radiating unit, like this, makes high -voltage generator and PCB board component realize physical isolation, avoids the heat cross interference, and cooperates first, second radiating fan formation from back to front forced air passage and radiating unit, ensures hot air directional discharge, prolongs the life.

Description

Technical Field

[0001] This utility model relates to the field of spectrometers, and in particular to a spectrometer with an extended service life. Background Technology

[0002] A spectrometer is a precision instrument that utilizes the absorption, emission, or scattering properties of substances to achieve the analysis of material composition and the study of structure. It is widely used in materials science, environmental monitoring, biomedicine and other fields. Its core working principle is to use a high voltage generator to generate high voltage to drive key components such as photomultiplier tubes and ion sources, converting light signals into electrical signals, which are then processed and analyzed by PCB board assemblies.

[0003] Traditional spectrometers are typically housed in a single space, with the high-voltage generator (which generates a lot of heat during operation) and the PCB board assembly (containing a large number of temperature-sensitive chips) mixed together in the same chamber. Since the two have different heat dissipation requirements (the high-voltage generator needs strong heat dissipation, while the PCB board needs to avoid localized high temperatures), a single cooling fan cannot meet both needs. If the fan power is insufficient, the heat generated by the high-voltage generator will accumulate in the chamber, causing the internal capacitors, transformers, and other components to age faster due to long-term high temperatures (above 60°C). If the fan power is too high, the strong airflow will cause dust to accumulate on the PCB board quickly, which will in turn affect the circuit insulation performance.

[0004] Secondly, the high-voltage generator generates high-frequency electromagnetic radiation when it is working. To avoid interfering with the weak signal processing circuits of the PCB board components, existing technology usually encapsulates it in a metal shielding box. However, in order to achieve the shielding effect, traditional shielding boxes often adopt a closed structure and leave a gap with the inner wall of the spectrometer body. This results in the heat inside the shielding box not being effectively dissipated, making the temperature inside the shielding box higher than the ambient temperature of the chamber. This can easily cause the high-voltage generator to trigger protection shutdown due to overheating, seriously affecting the continuity of detection.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a spectrometer with an extended service life. It uses a partition to divide the placement chamber into two independent chambers, thereby physically isolating the high-voltage generator from the PCB board assembly and avoiding heat cross-interference. At the same time, the first and second cooling fans form a forced airflow channel from back to front, and the heat dissipation components ensure that the second chamber where the high-voltage generator is located and the first chamber where the PCB board assembly is located have independent heat dissipation paths. Furthermore, the design of their respective air outlets ensures that hot air is discharged in a directional manner, thereby extending the service life.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A spectrometer with extended service life includes a spectrometer body, the spectrometer body including a plurality of side plates and a top plate, the upper ends of the plurality of side plates being connected to the top plate to form a placement cavity with an open lower end; a partition is provided inside the placement cavity, the partition dividing the placement cavity into a first chamber and a second chamber that are independent of each other.

[0009] The front side of the spectrometer body is provided with air outlets corresponding to the first chamber and the second chamber, respectively, and the air outlets are connected to the first chamber and the second chamber, respectively;

[0010] A PCB board assembly is fixed in the first chamber, and an aluminum shielding box is provided in the second chamber. A high voltage generator is installed inside the shielding box. The high voltage generator is electrically connected to the PCB board assembly, and the outer surface of the shielding box is in contact with the inner wall of the spectrometer body.

[0011] The rear side of the spectrometer body is provided with a first mounting position and a second mounting position corresponding to the positions of the first chamber and the second chamber, respectively. A first cooling fan and a second cooling fan are respectively provided on the first mounting position and the second mounting position. The air outlet of the first cooling fan faces into the first chamber, and the air outlet of the second cooling fan faces into the second chamber, so as to form a forced airflow channel from back to front.

[0012] The lower end face of the spectrometer body is also provided with a heat dissipation component, which includes a first heat-conducting sheet, a second heat-conducting sheet, and a heat dissipation plate. The first heat-conducting sheet covers the lower end face of the first chamber, and the second heat-conducting sheet covers the lower end face of the second chamber, such that the upper end of the second heat-conducting sheet is in contact with the lower end face of the shielding box. The heat dissipation plate is disposed on the lower end face of the first heat-conducting sheet and the second heat-conducting sheet.

[0013] As a preferred embodiment, the plurality of side plates include a vertical plate and an extension plate, the left end of the extension plate being connected to the lower end of the vertical plate, and a support member being provided on the lower end surface of the extension plate.

[0014] As a preferred embodiment, the lower end of the support extends beyond the heat sink.

[0015] As a preferred embodiment, the heat sink includes a heat sink main plate and heat sink fins. The upper surface of the heat sink main plate is respectively attached to the first heat-conducting sheet and the second heat-conducting sheet. Multiple heat sink fins are provided, and the spacing between the multiple heat sink fins is set on the lower surface of the heat sink main plate.

[0016] As a preferred embodiment, a high-voltage protection control structure integrated within the PCB assembly and shielding box is also included, the high-voltage protection control structure comprising:

[0017] The input power supply is connected to the external power supply line of the spectrometer main body;

[0018] A voltage regulator and filter module is fixed inside a shielded box and electrically connected to the input power supply. The voltage regulator and filter module is connected to a high voltage generator via wires.

[0019] The voltage detection module is located inside a shielded box and connected in parallel with the output terminal of the high voltage generator;

[0020] A current detection module is connected to the PCB board assembly via a first shielded wire;

[0021] The power calculation unit has its input terminals connected to the output terminals of the voltage detection module and the current detection module, respectively.

[0022] Threshold setting unit;

[0023] High voltage conversion unit;

[0024] The comparison and judgment unit has its first input terminal connected to the output terminal of the power calculation unit and its second input terminal connected to the output terminal of the threshold setting unit.

[0025] The execution unit is equipped with a control terminal and an execution terminal. Its control terminal is connected to the over-limit signal output terminal of the comparison and judgment unit, and its execution terminal is connected to the enable terminal of the high-voltage conversion unit.

[0026] The status indication unit has its input terminals connected to the output terminal of the comparison and judgment unit and the feedback terminal of the execution unit, respectively.

[0027] The reset unit's output is connected to the reset terminal of the comparison and judgment unit.

[0028] As a preferred embodiment, the PCB board assembly is further provided with a circuit layer, and the power calculation unit, threshold setting unit and comparison judgment unit are all integrated on the circuit layer of the PCB board assembly.

[0029] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly divides the placement cavity into an independent first chamber and a second chamber by a partition, so that the high voltage generator and the PCB board assembly are physically isolated to avoid heat cross-interference. At the same time, the first and second cooling fans form a forced airflow channel from back to front, so that the second chamber where the high voltage generator is located and the first chamber where the PCB board assembly is located form an independent heat dissipation path. The design of their respective air outlets ensures that hot air is discharged in a directional manner.

[0030] Secondly, the combination of the aluminum shielding box and the heat-conducting structure utilizes the high conductivity of aluminum to achieve electromagnetic shielding. Then, through the structure where the outer surface of the shielding box is attached to the inner wall of the spectrometer body, the heat from the high-voltage generator is conducted to the outer shell of the spectrometer body. The heat from the two chambers is transferred to the common heat sink through the first and second heat-conducting plates respectively via dedicated heat conduction paths, avoiding heat mixing and accumulation at the bottom and effectively extending the service life.

[0031] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0032] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0033] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0034] Figure 3 This is another cross-sectional view of an embodiment of the present utility model.

[0035] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0036] Figure 5 This is a control block diagram of a high-voltage protection control structure according to an embodiment of this utility model.

[0037] Explanation of reference numerals in the attached diagram:

[0038] 10. Spectrometer main body 11. Side plate

[0039] 111. Vertical board 112. Extension board

[0040] 113. Air outlet

[0041] 12. Top plate 13. Placement cavity

[0042] 14. Partition plate 15. Supporting components

[0043] 141. First chamber 142. Second chamber

[0044] 16. Shielding box 17. First cooling fan

[0045] 18. Second cooling fan

[0046] 20. PCB board assembly

[0047] 30. Heat dissipation component; 31. First heat conduction plate

[0048] 32. Second heat sink 33. Heat sink plate

[0049] 331. Heatsink motherboard; 332. Heatsink fins

[0050] 40. High-voltage protection and control structure

[0051] 41. Input power supply 42. Voltage regulator and filter module

[0052] 43. Voltage detection module 44. Current detection module

[0053] 45. Power calculation unit; 46. Threshold setting unit

[0054] 47. Comparison and Judgment Unit 48. Execution Unit

[0055] 49. Reset unit. Detailed Implementation

[0056] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0057] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0058] A spectrometer with extended service life includes a spectrometer body 10.

[0059] The spectrometer body 10 includes several side plates 11 and a top plate 12. The upper ends of the side plates 11 are connected to the top plate 12 to form a placement cavity 13 with an opening at the lower end. A partition 14 is provided inside the placement cavity 13, which divides the placement cavity 13 into a first chamber 141 and a second chamber 142 that are independent of each other. Preferably, the several side plates 11 include a vertical plate 111 and an extension plate 112. The left end of the extension plate 112 is connected to the lower end of the vertical plate 111, and a support member 15 is provided on the lower end surface of the extension plate 112.

[0060] The front side of the spectrometer body 10 is provided with air outlets 113 corresponding to the first chamber 141 and the second chamber 142, respectively. The air outlets 113 are connected to the first chamber 141 and the second chamber 142, respectively.

[0061] The first chamber 141 is fixed with a PCB board assembly 20, and the second chamber 142 is provided with an aluminum shielding box 16. The shielding box 16 is provided with a high voltage generator, which is electrically connected to the PCB board assembly 20, and the outer surface of the shielding box 16 is in contact with the inner wall of the spectrometer body 10.

[0062] The spectrometer body 10 has a first mounting position and a second mounting position respectively on the rear side corresponding to the positions of the first chamber 141 and the second chamber 142. A first cooling fan 17 and a second cooling fan 18 are respectively installed on the first mounting position and the second mounting position. The air outlet of the first cooling fan 17 faces into the first chamber 141, and the air outlet of the second cooling fan 18 faces into the second chamber 142, so as to form a forced airflow channel from back to front.

[0063] The lower end face of the spectrometer body 10 is also provided with a heat dissipation assembly 30. The heat dissipation assembly 30 includes a first heat-conducting plate 31, a second heat-conducting plate 32, and a heat dissipation plate 33. The first heat-conducting plate 31 covers the lower end face of the first chamber 141, and the second heat-conducting plate 32 covers the lower end face of the second chamber 142, such that the upper end of the second heat-conducting plate 32 is in contact with the lower end face of the shielding box 16. The heat dissipation plate 33 is disposed on the lower end face of the first heat-conducting plate 31 and the second heat-conducting plate 32, thereby allowing the air outlet 113 on the front side to... In conjunction with the first cooling fan 17 and the second cooling fan 18 on the rear side, a forced airflow channel from back to front is formed, which can quickly remove the heat in the first chamber 141 and the second chamber 142. At the same time, in the heat dissipation assembly 30 on the lower end face, the first heat-conducting plate 31 and the second heat-conducting plate 32 respectively cover the lower end face of the first chamber 141 and the second chamber 142. The second heat-conducting plate 32 is attached to the lower end face of the shielding box 16, which can quickly conduct the heat in the chamber to the heat dissipation plate 33, and further dissipate it to the external environment through the heat dissipation plate 33.

[0064] Preferably, the lower end of the support member 15 extends beyond the heat sink 33, so that the heat sink 33 does not directly contact the support surface when the spectrometer is placed. This ensures that there is sufficient air circulation space around the heat sink 33, avoids the support surface from blocking the heat dissipation of the heat sink 33, further improves the heat dissipation efficiency of the heat dissipation component 30, ensures that the heat inside the spectrometer can be dissipated in time, maintains a good working temperature environment, and helps to extend the service life of the spectrometer.

[0065] Preferably, the heat sink 33 includes a heat sink main plate 331 and heat sink fins 332. The upper surface of the heat sink main plate 331 is respectively attached to the first heat-conducting plate 31 and the second heat-conducting plate 32. Multiple heat sink fins 332 are provided, and the multiple heat sink fins 332 are spaced apart on the lower surface of the heat sink main plate 331. The upper surface of the heat sink main plate 331 is attached to the first heat-conducting plate 31 and the second heat-conducting plate 32, which can quickly receive heat from the first chamber 141 and the second chamber 142. The multiple heat sink fins 332 are arranged on the lower surface of the heat sink main plate 331, which increases the contact area between the heat sink 33 and the outside air, accelerates the heat dissipation speed, and enhances the heat dissipation capacity of the heat sink 33. Together with the first heat-conducting plate 31, the second heat-conducting plate 32 and the forced airflow channel, a highly efficient heat dissipation system is formed, which effectively reduces the internal temperature of the spectrometer, reduces the adverse effects of high temperature on electronic components, and improves the reliability and service life of the spectrometer.

[0066] It also includes a high-voltage protection control structure 40 integrated within the PCB assembly 20 and the shielding box 16, the high-voltage protection control structure 40 comprising:

[0067] Input power supply 41 is connected to the external power supply line of the spectrometer body 10;

[0068] The voltage stabilizing and filtering module 42 is fixed inside the shielding box 16 and electrically connected to the input power supply 41. The voltage stabilizing and filtering module 42 is connected to the high voltage generator through a wire. The voltage stabilizing and filtering module 42 performs voltage stabilization and filtering on the input power supply 41 to reduce power grid fluctuations or noise interference and ensure the stable operation of subsequent circuits.

[0069] A voltage detection module 43 is disposed inside a shielded box 16 and connected in parallel with the output terminal of a high voltage generator; preferably, the voltage detection module 43 is connected to the PCB board assembly 20 via a second shielded wire.

[0070] The current detection module 44 is connected to the PCB board assembly 20 through the first shielded wire; it acquires the voltage signal of the high voltage output terminal in real time (achieved through a high voltage divider circuit or isolation sensor), and outputs a low voltage detection signal proportional to the high voltage; it acquires the load circuit current through a high-precision current sensor (such as a Hall sensor or sampling resistor) to obtain a real-time current signal.

[0071] The power calculation unit 45 has its input terminals connected to the output terminals of the voltage detection module 43 and the current detection module 44, respectively; it receives voltage detection signals and current detection signals, and calculates the current output power in real time (including isolation amplification processing to ensure high and low voltage isolation safety);

[0072] Threshold setting unit 46: Through potentiometer, digital knob or software configuration, preset the upper limit of the spectrometer's safe power (set according to the spectrometer's rated parameters, such as "50W" "100W" etc.), and output the threshold reference signal;

[0073] The comparison and judgment unit 47 has its first input terminal connected to the output terminal of the power calculation unit 45, and its second input terminal connected to the output terminal of the threshold setting unit 46. The comparison and judgment unit 47 compares the real-time power output by the power calculation unit 45 with the safety threshold of the threshold setting unit 46 to determine whether the current power exceeds the safe range.

[0074] The execution unit 48 is provided with a control terminal and an execution terminal. Its control terminal is connected to the over-limit signal output terminal of the comparison and judgment unit 47, and its execution terminal is connected to the enable terminal of the high voltage conversion unit. The execution unit 48 receives the over-limit signal from the comparison and judgment unit 47 and performs protection actions (cuts off the power supply to the high voltage conversion unit or reduces the output power) by driving switching devices such as relays and thyristors.

[0075] The status indication unit has its input terminals connected to the output terminal of the comparison and judgment unit 47 and the feedback terminal of the execution unit 48, respectively.

[0076] The reset unit 49, whose output is connected to the reset terminal of the comparison and judgment unit 47, and the high-voltage protection control structure 40 integrated in the PCB board assembly and shielding box 16, are connected to the external power supply line through the input power supply 41 to provide power support for the entire system. The voltage stabilization and filtering module 42 is fixed in the shielding box 16 and can perform voltage stabilization and filtering on the input power supply 41 to reduce the impact of power fluctuations and interference on the high-voltage generator and ensure the stable operation of the high-voltage generator. The voltage detection module 43 and the current detection module 44 monitor the output voltage and current of the high-voltage generator in real time and transmit the signals to the power calculation unit 45. The power calculation unit 45 calculates the actual power based on the voltage and current signals. The threshold setting unit 46 presets the safe power threshold. The comparison and judgment unit 47 calculates the actual power. The power is compared with a preset threshold. When the actual power exceeds the threshold, an over-limit signal is sent to the execution unit 48. The execution unit 48 controls the high-voltage conversion unit to stop working, avoiding overload operation of the high-voltage system and preventing component damage caused by high-voltage abnormalities. The status indicator unit can display the working status of the high-voltage system and the action feedback of the execution unit 48 in real time, so that users can understand the equipment operation status in a timely manner. The reset unit 49 can reset the comparison judgment unit 47 after the fault is cleared, so that the system can be put back into normal operation. This high-voltage protection control structure 40 realizes real-time monitoring and protection of the high-voltage system, effectively avoiding damage to the spectrometer caused by abnormal conditions such as overvoltage and overcurrent, improving the safety and reliability of the equipment, and extending the service life of high-voltage generator, PCB board assembly and other related components.

[0077] The spectrometer load is the output of the high-voltage generator. The spectrometer load includes the photomultiplier tube and high-voltage electrode inside the spectrometer.

[0078] Preferably, the PCB board assembly 20 is further provided with a circuit layer, and the power calculation unit 45, the threshold setting unit 46 and the comparison and judgment unit 47 are all integrated on the circuit layer of the PCB board assembly 20.

[0079] The voltage and current detection module 44 continuously collects the voltage and current at the load end, and the power calculation unit 45 outputs the real-time power value. The comparison and judgment unit 47 compares the real-time power with the preset safety threshold. If the limit is not exceeded, the device maintains normal output and illuminates the normal indicator. If the real-time power exceeds the threshold, the comparison and judgment unit 47 immediately triggers the execution unit 48 to cut off the power supply to the high-voltage conversion unit or limit its output power, and illuminates the protection indicator to prevent the spectrometer from being damaged due to overpower. After the fault is cleared, a reset signal is sent through the reset unit 49, the comparison and judgment unit 47 releases the protection state, and the device can be restarted to enter the normal working mode.

[0080] In this embodiment, the high-voltage protection control structure 40 is reasonably integrated into the PCB board assembly and the shielding box 16 to achieve effective protection and control of the high-voltage generator, for example:

[0081] The integration of PCB board assembly 20 is mainly achieved through circuit design and component soldering. The circuit layout design is based on the requirements of functional modules such as the power calculation unit 45, threshold setting unit 46, and comparison and judgment unit 47 in the high-voltage protection control structure 40. The PCB layout is designed to rationally plan circuit traces, separating different functional areas to reduce signal interference. For example, analog signal processing circuits (used for voltage and current signal processing) and digital signal processing circuits (such as comparison and judgment logic circuits) are laid out separately to avoid crosstalk between digital signals and analog signals.

[0082] When soldering components, electronic components such as resistors, capacitors, operational amplifiers, and microcontrollers that constitute various functional units are soldered onto the PCB board according to the designed PCB layout. For example, surface mount technology is used to precisely solder small-sized components such as resistors and capacitors to designated pads. For chips such as operational amplifiers and microcontrollers, reflow soldering or other methods are used to ensure the reliability of electrical connections.

[0083] When reserving and connecting interfaces, the reserved interfaces are designed on the PCB board to connect with other components, such as signal input interfaces for connecting voltage detection module 43 and current detection module 44, control signal output interfaces for connecting execution unit 48 (relay), and interfaces for connecting reset unit 49, normal operation indicator module, and protection status indicator module. These interfaces can take the form of pin headers, sockets, etc.

[0084] When connecting, use appropriate cables to connect the PCB board to other components. For example, use shielded cables to connect the voltage detection module 43 and the current detection module 44 to reduce the influence of external electromagnetic interference on the detection signal. Use ordinary wires to connect low-voltage and low-current components such as indicator lights and reset buttons.

[0085] Fixed installation integrated into the shielded box 16 module:

[0086] Based on the external dimensions of the voltage stabilizing and filtering module 42, a suitable mounting bracket or slot is designed inside the shielding box 16. Screws are used to fix the module to the bracket, ensuring a secure installation and good electrical insulation between the module and the shielding box 16 (insulating gaskets can be used). The module's input and output terminals are connected to the corresponding circuits via wires; for example, the input terminal is connected to the input power supply 41, and the output terminal is connected to a high-voltage generator.

[0087] The current detection module 44 can be a Hall current sensor or similar device. It is typically installed near the wiring between the high-voltage generator and the spectrometer load. The sensor can be fixed to the inner wall of the shielded box 16 using a bracket, enabling it to accurately detect the current in the load circuit.

[0088] The execution unit 48 (relay) is installed inside the shielded box 16 near the power supply circuit of the high-voltage generator to shorten the length of the connecting wires. The relay is fixed to the mounting plate inside the shielded box 16 using screws or clips. The relay's control pins are connected to the output of the comparison and judgment unit 47 on the PCB board assembly 20 via wires, while the main contacts are connected in series in the power supply circuit of the high-voltage generator.

[0089] To ensure the integrity of the shielding box 16, all components installed inside the shielding box 16, if their outer shells are made of metal, should be properly connected to the shielding box 16 to ensure electromagnetic shielding effectiveness. For example, metal wires can be used to connect the relay shell to the shielding box 16, making the entire shielding box 16 a continuous electromagnetic shield to prevent electromagnetic interference generated by the high-voltage generator from leaking out, and also to prevent external interference from affecting the normal operation of the protection and control structure. When grounding, a dedicated grounding terminal is set on the shielding box 16. Components that need to be grounded, such as the shielding box 16, the metal shell of the voltage stabilizing filter module 42, and the metal shielding layer of the current detection module 44, are connected to the grounding terminal through wires. The grounding terminal is then connected to the system ground of the spectrometer to ensure good grounding effect and reduce electromagnetic interference and electrical safety risks.

[0090] The key design feature of this utility model is that it mainly uses a partition to divide the placement cavity into two independent chambers, namely a first chamber and a second chamber, so as to physically isolate the high voltage generator from the PCB board assembly and avoid heat cross-interference. At the same time, the first and second cooling fans form a forced airflow channel from back to front, so that the second chamber where the high voltage generator is located and the first chamber where the PCB board assembly is located form an independent heat dissipation path. The design of their respective air outlets ensures that hot air is discharged in a directional manner.

[0091] Secondly, the combination of the aluminum shielding box and the heat-conducting structure utilizes the high conductivity of aluminum to achieve electromagnetic shielding. Then, through the structure where the outer surface of the shielding box is attached to the inner wall of the spectrometer body, the heat from the high-voltage generator is conducted to the outer shell of the spectrometer body. The heat from the two chambers is transferred to the common heat sink through the first and second heat-conducting plates respectively via dedicated heat conduction paths, avoiding heat mixing and accumulation at the bottom and effectively extending the service life.

[0092] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A spectrometer with extended service life, characterized in that: The instrument includes a spectrometer body, which includes several side plates and a top plate. The upper ends of the side plates are connected to the top plate to form a placement cavity with an open lower end. A partition is provided inside the placement cavity to divide the placement cavity into a first chamber and a second chamber that are independent of each other. The front side of the spectrometer body is provided with air outlets corresponding to the first chamber and the second chamber, respectively, and the air outlets are connected to the first chamber and the second chamber, respectively; A PCB board assembly is fixed in the first chamber, and an aluminum shielding box is provided in the second chamber. A high voltage generator is installed inside the shielding box. The high voltage generator is electrically connected to the PCB board assembly, and the outer surface of the shielding box is in contact with the inner wall of the spectrometer body. The rear side of the spectrometer body is provided with a first mounting position and a second mounting position corresponding to the positions of the first chamber and the second chamber, respectively. A first cooling fan and a second cooling fan are respectively provided on the first mounting position and the second mounting position. The air outlet of the first cooling fan faces into the first chamber, and the air outlet of the second cooling fan faces into the second chamber, so as to form a forced airflow channel from back to front. The lower end face of the spectrometer body is also provided with a heat dissipation component, which includes a first heat-conducting sheet, a second heat-conducting sheet, and a heat dissipation plate. The first heat-conducting sheet covers the lower end face of the first chamber, and the second heat-conducting sheet covers the lower end face of the second chamber, such that the upper end of the second heat-conducting sheet is in contact with the lower end face of the shielding box. The heat dissipation plate is disposed on the lower end face of the first heat-conducting sheet and the second heat-conducting sheet.

2. The spectrometer with extended service life according to claim 1, characterized in that: The side plates include a vertical plate and an extension plate. The left end of the extension plate is connected to the lower end of the vertical plate, and a support is provided on the lower end surface of the extension plate.

3. The spectrometer with extended service life according to claim 2, characterized in that: The lower end of the support extends beyond the heat sink.

4. The spectrometer with extended service life according to claim 1, characterized in that: The heat sink includes a heat sink main plate and heat sink fins. The upper surface of the heat sink main plate is attached to the first heat-conducting sheet and the second heat-conducting sheet respectively. Multiple heat sink fins are provided, and the spacing between the multiple heat sink fins is set on the lower surface of the heat sink main plate.

5. The spectrometer with extended service life according to claim 1, characterized in that: It also includes a high-voltage protection control structure integrated within the PCB assembly and shielding box, the high-voltage protection control structure comprising: The input power supply is connected to the external power supply line of the spectrometer main body; A voltage regulator and filter module is fixed inside a shielded box and electrically connected to the input power supply. The voltage regulator and filter module is connected to a high voltage generator via wires. The voltage detection module is located inside a shielded box and connected in parallel with the output terminal of the high voltage generator; A current detection module is connected to the PCB board assembly via a first shielded wire; The power calculation unit has its input terminals connected to the output terminals of the voltage detection module and the current detection module, respectively. Threshold setting unit; High voltage conversion unit; The comparison and judgment unit has its first input terminal connected to the output terminal of the power calculation unit and its second input terminal connected to the output terminal of the threshold setting unit. The execution unit is equipped with a control terminal and an execution terminal. Its control terminal is connected to the over-limit signal output terminal of the comparison and judgment unit, and its execution terminal is connected to the enable terminal of the high-voltage conversion unit. The status indication unit has its input terminals connected to the output terminal of the comparison and judgment unit and the feedback terminal of the execution unit, respectively. The reset unit's output is connected to the reset terminal of the comparison and judgment unit.

6. The spectrometer with extended service life according to claim 5, characterized in that: The PCB board assembly also has a circuit layer, and the power calculation unit, threshold setting unit and comparison judgment unit are all integrated on the circuit layer of the PCB board assembly.

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