A vacuum bellows online helium mass spectrometry leak detection device

Abstract

This utility model relates to the technical field of leak detection equipment, and discloses an online helium mass spectrometry leak detection device for vacuum bellows. It includes a detection platform, with a helium mass spectrometer leak detector fixedly connected to the bottom of the inner wall of the platform. A clamping detection mechanism is located on the top left side of the platform, and a nitrogen spraying mechanism is located on the outer wall of the platform for spraying nitrogen gas. An external component is located on the right side of the helium mass spectrometer leak detector. The clamping detection mechanism includes a fixing plate, the bottom of which is fixedly connected to the top left side of the platform. In this utility model, a cylinder pushes an I-shaped clamping plate to slide along the inner wall of a limiting groove. As the I-shaped clamping plate approaches the fixing plate, its top conical block contacts and adheres to the outer wall of the vacuum bellows, clamping the bellows. A valve controls the opening and closing of the extraction passage, and a baffle plate on the outer wall of the extraction pipe blocks impurities, thereby quickly completing the detection of multiple workpieces.

Description

Technical Field

[0001] This utility model relates to the field of leakage detection equipment technology, and in particular to a vacuum bellows online helium mass spectrometry leakage detection device. Background Technology

[0002] The online helium mass spectrometry leak detection device for vacuum bellows is a specialized device designed specifically for leak detection in vacuum bellows. It is used in the production, installation, commissioning, and routine maintenance of vacuum bellows. Using helium as the tracer gas and relying on helium mass spectrometry leak detection technology, it can quickly and accurately detect leaks in vacuum bellows without removing them from the production line or installation system. This provides key technical support for ensuring the sealing and operational stability of the vacuum system containing the vacuum bellows, and is an important piece of equipment in the field of vacuum technology to ensure the quality of bellows products and the reliable operation of the system.

[0003] Early vacuum bellows leak detection devices consisted of simple helium injection components, basic vacuum pumping units, and low-precision helium detection instruments. These devices suffered from numerous problems during use: low vacuum pumping efficiency, difficulty in quickly establishing a stable detection vacuum environment leading to excessively long detection times; insufficient helium injection accuracy, resulting in missed or excessive injections affecting the accuracy of the results; and low sensitivity of the detection instruments, failing to detect minute leaks, thus posing a significant risk of missed detections. To address these issues, existing detection devices have undergone structural improvements, employing a vacuum system composed of a high-efficiency multi-stage vacuum pump, capable of rapidly achieving the required high vacuum level, and equipped with precise control... The helium injection mechanism enables precise injection of helium into critical parts of the bellows and is equipped with a highly sensitive helium mass spectrometer leak detector, significantly improving the detection capability of minute leaks. However, existing detection devices still have significant limitations. They can only perform single-unit detection, which is very time-consuming when testing large batches. Because the tooling fixtures of existing devices are usually designed for a single station, only one vacuum bellows can be clamped at a time during operation. Only after the entire process from clamping, vacuuming, helium injection to output of detection results can the next bellows be tested. This single-station operation mode greatly reduces the detection efficiency of the device when facing the demand for testing large batches of vacuum bellows, seriously restricting the overall progress of the production line. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an online helium mass spectrometry leak detection device for vacuum bellows, aiming to improve the problem that the detection efficiency of the device is greatly reduced when facing the need for large-scale detection of vacuum bellows in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an online helium mass spectrometry leak detection device for a vacuum bellows, comprising a detection platform, a helium mass spectrometry leak detector fixedly connected to the bottom of the inner wall of the detection platform, a clamping detection mechanism provided on the top left side of the detection platform, a nitrogen spraying mechanism provided on the outer wall of the detection platform, the nitrogen spraying mechanism being used to spray nitrogen gas, and an external component provided on the right side of the helium mass spectrometry leak detector;

[0006] The clamping and detection mechanism includes a fixed plate. The bottom end of the fixed plate is fixedly connected to the top left side of the detection platform. The top left side of the helium mass spectrometer leak detector is connected to multiple connecting pipes. The top end of the connecting pipes passes through the left side of the fixed plate and is connected to an extraction pipe. The top of the fixed plate is fixedly connected to multiple valves. A baffle plate is fixedly connected to the outer wall of the extraction pipe. Cylinders are fixedly connected to the front and rear sides of the top of the inner wall of the detection platform. One end of each of the two cylinders is fixedly connected to an I-shaped clamping plate. The top end of the I-shaped clamping plate passes through the top of the outer wall of the detection platform and is fixedly connected to multiple conical blocks. A monitoring component is provided at the top of the I-shaped clamping plate.

[0007] As a further description of the above technical solution:

[0008] The nitrogen spraying mechanism includes two chutes, the outer walls of which are respectively opened on the front and rear sides of the outer wall of the testing platform. The inner walls of both chutes are slidably connected to sliding frames. A placement frame is fixedly connected to the rear side of the sliding frame. A nitrogen tank is provided on the inner wall of the placement frame. A hose is connected to the top of the nitrogen tank. A diverter pipe is connected to the top of the hose. The outer wall of the diverter pipe passes through the top of the sliding frame and is fixedly connected to multiple nozzles. A handle is fixedly connected to the front side of the sliding frame.

[0009] As a further description of the above technical solution:

[0010] The monitoring component includes multiple connecting holes, the outer walls of which are respectively opened at the left end of the conical block, and multiple vacuum pressure gauges are fixedly connected to the top of the I-shaped clamping plate.

[0011] As a further description of the above technical solution:

[0012] A limiting groove is provided at the top center of the testing platform, and the inner wall of the I-shaped clamping plate is slidably connected to the inner wall of the limiting groove.

[0013] As a further description of the above technical solution:

[0014] The external component includes a switch, the outer wall of which is fixedly connected to the front right side of the helium mass spectrometer leak detector. An external interface is fixedly connected to the bottom right side of the helium mass spectrometer leak detector. Multiple data interfaces are fixedly connected to the top right side of the helium mass spectrometer leak detector. A power interface is fixedly connected to the rear right side of the helium mass spectrometer leak detector.

[0015] As a further description of the above technical solution:

[0016] The helium mass spectrometer leak detector has grooves on both the left and right sides of its outer wall, and multiple heat dissipation holes on the front side of the helium mass spectrometer leak detector.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the nitrogen tank engages with the inner wall of the placement rack, and the outer wall of the baffle plate is designed to be non-slip.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the conical block is made of wear-resistant soft rubber, and the conical block and the central axis of the air extraction pipe are on the same horizontal line.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the I-shaped clamping plate is pushed by a cylinder to slide along the inner wall of the limiting groove. As the I-shaped clamping plate approaches the fixed plate, its top conical block contacts and fits against the outer wall of the vacuum bellows, thus clamping the bellows. The fixed plate supports the clamping and detection mechanism. The valve controls the opening and closing of the gas extraction passage. When the operator opens the valve, the helium mass spectrometer leak detector evacuates the clamped vacuum bellows through the gas extraction pipe. The baffle plate on the outer wall of the gas extraction pipe blocks impurities. The monitoring component allows the operator to easily determine whether the vacuum level meets the standard, thereby quickly completing the detection of multiple workpieces.

[0023] 2. In this utility model, by pushing the handle, the sliding frame slides along the slide groove, and the nozzle position is adjusted so that it is aligned with the part of the vacuum bellows to be tested. The nitrogen tank is fixed by the placement frame to ensure its stability when moving. The nitrogen in the nitrogen tank is transported to the distribution pipe through the hose, and then evenly sprayed onto the surface of the vacuum bellows by multiple nozzles. When there is a leak in the vacuum bellows, the sprayed nitrogen will enter the interior through the leak and be captured by the helium mass spectrometer leak detector. The instrument determines the leak by analyzing the change in nitrogen concentration, thus facilitating the detection of the bellows. Attached Figure Description

[0024] Figure 1 This is a perspective view of an online helium mass spectrometry leak detection device for a vacuum bellows, as proposed in this utility model.

[0025] Figure 2This is a front view of an online helium mass spectrometry leak detection device for a vacuum bellows, as proposed in this utility model.

[0026] Figure 3 This is a side view of an online helium mass spectrometry leak detection device for a vacuum bellows, as proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the detection stage of an online helium mass spectrometry leak detection device for vacuum bellows proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the cylinder structure of the vacuum bellows online helium mass spectrometry leak detection device proposed in this utility model;

[0029] Figure 6 This is a schematic diagram of the nitrogen injection mechanism of an online helium mass spectrometry leak detection device for a vacuum bellows, as proposed in this utility model.

[0030] Legend:

[0031] 1. Testing table; 2. Clamping and testing mechanism; 201. Fixing plate; 202. Connecting pipe; 203. Evacuation pipe; 204. Valve; 205. Baffle plate; 206. Cylinder; 207. I-shaped clamping plate; 208. Conical block; 209. Monitoring component; 2091. Connecting hole; 2092. Vacuum pressure gauge; 3. Nitrogen spraying mechanism; 301. Slide groove; 302. Sliding frame; 303. Placement frame; 304. Nitrogen tank; 305. Hoses; 306. Diverter pipe; 307. Nozzle; 308. Handle; 4. Helium mass spectrometer leak detector; 5. Limiting groove; 6. External component; 601. Switch; 602. External interface; 603. Data interface; 604. Power interface; 7. Groove; 8. Heat dissipation hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 2 , Figure 4 and Figure 5This utility model provides an embodiment of an online helium mass spectrometry leak detection device for vacuum bellows, including a detection platform 1. A helium mass spectrometer leak detector 4 is fixedly connected to the bottom of the inner wall of the detection platform 1. The helium mass spectrometer leak detector 4 provides the core gas analysis and detection capabilities for the entire leak detection process. A clamping detection mechanism 2 is provided on the top left side of the detection platform 1. A nitrogen spraying mechanism 3 is provided on the outer wall of the detection platform 1. The nitrogen spraying mechanism 3 is used to spray nitrogen gas. An external component 6 is provided on the right side of the helium mass spectrometer leak detector 4. The external component 6 can be connected to external equipment according to actual needs to realize the transmission of detection data or expand the detection function.

[0034] The clamping and detection mechanism 2 includes a fixing plate 201. The bottom end of the fixing plate 201 is fixedly connected to the top left side of the detection table 1. Multiple connecting pipes 202 are connected to the top left side of the helium mass spectrometer leak detector 4. The top end of the connecting pipe 202 passes through the left side of the fixing plate 201 and is connected to a vacuum pipe 203. Multiple valves 204 are fixedly connected to the top of the fixing plate 201. A baffle plate 205 is fixedly connected to the outer wall of the vacuum pipe 203. The fixing plate 201 serves as the basic support for the clamping and detection mechanism 2, and the valves 204 are used to control the opening and closing of the vacuum passage. By opening the valves 204, the operator can allow the helium mass spectrometer leak detector 4 to perform a vacuuming operation on the inside of the clamped vacuum bellows through the vacuum pipe 203. The baffle plate 205 on the outer wall of the vacuum pipe 203 can block external impurities. The material enters the suction channel. Cylinders 206 are fixedly connected to the front and rear sides of the top of the inner wall of the detection platform 1. One end of each cylinder 206 is fixedly connected to an I-shaped clamping plate 207. The top of the I-shaped clamping plate 207 passes through the top of the outer wall of the detection platform 1 and is fixedly connected to multiple conical blocks 208. When the cylinders 206 are activated, they will push the I-shaped clamping plate 207 to slide along the inner wall of the limiting groove 5. As the I-shaped clamping plate 207 moves closer to the fixed plate 201, the multiple conical blocks 208 at its top gradually contact and fit tightly with the outer wall of the vacuum bellows, thus achieving a firm clamping of the bellows. A monitoring component 209 is provided at the top of the I-shaped clamping plate 207. A limiting groove 5 is opened in the middle of the top of the detection platform 1, and the inner wall of the I-shaped clamping plate 207 is slidably connected to the inner wall of the limiting groove 5.

[0035] The monitoring component 209 includes multiple connecting holes 2091, the outer walls of which are respectively opened at the left end of the conical block 208, and multiple vacuum pressure gauges 2092 are fixedly connected to the top of the I-shaped clamping plate 207.

[0036] Specifically, the helium mass spectrometer leak detector 4 is activated first, entering the detection state and providing core gas analysis and detection capabilities for the entire leak detection process. The operator places the vacuum bellows to be tested on the top of the detection platform 1, positioning it in the detection area between the fixed plate 201 and the I-shaped clamping plate 207. Subsequently, two cylinders 206 are activated simultaneously, pushing the I-shaped clamping plate 207 to slide along the inner wall of the limiting groove 5, ensuring that the I-shaped clamping plate 207 can only move smoothly along the preset trajectory and avoid deviation. As the I-shaped clamping plate 207 moves closer to the fixed plate 201, the multiple conical blocks 208 at its top gradually contact and tightly fit with the outer wall of the vacuum bellows, achieving a firm clamping of the bellows. The fixed plate 201 serves as the basic support for the clamping detection mechanism 2. The valve 204 is used to control the opening and closing of the evacuation passage. By opening the valve 204, the operator can allow the helium mass spectrometer leak detector 4 to perform a vacuum operation on the inside of the clamped vacuum bellows through the evacuation pipe 203. The baffle plate 205 on the outer wall of the evacuation pipe 203 can prevent external impurities from entering the evacuation passage, ensuring the cleanliness of the evacuation environment. At the same time, the monitoring component 209 starts to work: the vacuum pressure gauge 2092 on the top of the I-shaped clamping plate 207 monitors the vacuum degree inside the bellows in real time, and the connecting hole 2091 at the left end of the cone block 208 serves as a pressure transmission channel to ensure that the air pressure inside the bellows can be accurately transmitted to the vacuum pressure gauge 2092, so that the operator can know whether the vacuum degree meets the detection requirements, thereby quickly completing the detection of multiple workpieces.

[0037] Reference Figure 1 , Figure 4 and Figure 6 The nitrogen spraying mechanism 3 includes two slides 301. The outer walls of the two slides 301 are respectively formed on the front and rear sides of the outer wall of the detection platform 1. The inner walls of the two slides 301 are slidably connected to sliding frames 302. The rear side of the sliding frame 302 is fixedly connected to a placement frame 303. The placement frame 303 is used to fix the nitrogen tank 304 to ensure its stable placement during movement. The inner wall of the placement frame 303 is provided with the nitrogen tank 304. The top of the nitrogen tank 304 is connected to a flexible hose 305. The top of the flexible hose 305... The end is connected to a diversion pipe 306. The outer wall of the diversion pipe 306 passes through the top of the sliding frame 302 and is fixedly connected to multiple nozzles 307. Nitrogen gas in the nitrogen tank 304 is delivered to the diversion pipe 306 through a hose 305. After diversion, it is evenly sprayed onto the surface of the vacuum bellows by multiple nozzles 307. A handle 308 is fixedly connected to the front side of the sliding frame 302. The handle 308 pushes the sliding frame 302 to slide along the sliding groove 301 on the front and rear sides of the outer wall of the detection table 1 to adjust the position of the nozzles 307.

[0038] Specifically, by pushing the sliding frame 302 along the sliding groove 301 on the front and rear sides of the outer wall of the detection stage 1 with the handle 308, the position of the nozzle 307 is adjusted so that it is aligned with the part of the vacuum bellows to be tested. The placement frame 303 is used to fix the nitrogen tank 304 to ensure that it is placed stably during movement. The nitrogen in the nitrogen tank 304 is delivered to the split pipe 306 through the hose 305. After splitting, it is evenly sprayed onto the surface of the vacuum bellows by multiple nozzles 307. When a leak occurs in the bellows under vacuum, the sprayed nitrogen will enter the bellows through the leak and be captured by the helium mass spectrometer leak detector 4. The instrument then determines the leak by analyzing the change in nitrogen concentration.

[0039] Reference Figure 1 and Figure 3 The external component 6 includes a switch 601, the outer wall of which is fixedly connected to the front right side of the helium mass spectrometer leak detector 4. The switch 601 is used to control the opening and closing of the helium mass spectrometer leak detector 4. An external interface 602 is fixedly connected to the bottom right side of the helium mass spectrometer leak detector 4. The external interface 602 can be used to connect external auxiliary detection equipment. Multiple data interfaces 603 are fixedly connected to the top right side of the helium mass spectrometer leak detector 4. The data interfaces 603 can realize data interaction with computer equipment. A power interface 604 is fixedly connected to the rear right side of the helium mass spectrometer leak detector 4. The power interface 604 is used to connect to a power source.

[0040] Specifically, the switch 601 in the external component 6 is used to control the opening and closing of the helium mass spectrometer leak detector 4, while the external interface 602 can be used to connect external auxiliary detection equipment. At the same time, the data interface 603 can realize data interaction with computer equipment, which facilitates the storage and analysis of detection data, and the power interface 604 is used to connect the power supply to power the helium mass spectrometer leak detector 4 and the entire device.

[0041] Reference Figure 1 , Figure 3 and Figure 6 The helium mass spectrometer leak detector 4 has grooves 7 on both the left and right sides of its outer wall, providing convenient gripping points for operators to handle or move it. Multiple heat dissipation holes 8 are located on the front of the helium mass spectrometer leak detector 4, which dissipate heat generated by the internal electronic components during operation. The outer wall of the nitrogen tank 304 engages with the inner wall of the placement rack 303, providing a secure fixation. The outer wall of the baffle plate 205 features an anti-slip design to increase friction with the bellows. The outer wall of the conical block 208 is made of wear-resistant soft rubber, extending its service life. The conical block 208 and the central axis of the extraction pipe 203 are on the same horizontal line, allowing the extraction pipe 203 to precisely connect with the bellows.

[0042] Specifically, the groove 7 provides a convenient gripping point for operators to handle or move the helium mass spectrometer leak detector 4, effectively increasing the friction between the hand and the outer wall of the instrument, making the handling process more effortless and stable, and preventing damage to the instrument or injury to personnel due to slippage during instrument movement. The heat dissipation hole 8 dissipates the heat generated by the internal electronic components of the helium mass spectrometer leak detector 4 to the outside in a timely manner, preventing the instrument from being affected by excessive temperature, which could affect the detection accuracy and service life, and ensuring that the instrument can operate stably for a long time. The engagement of the nitrogen tank 304 with the placement rack 303 can firmly fix the nitrogen tank 304, preventing the nitrogen tank 304 from shaking or tipping over during the movement or operation of the nitrogen spraying mechanism 3, and ensuring that nitrogen can be stably delivered through the hose 305 to the splitter tube 306 and the nozzle. 307. Furthermore, the anti-slip design of the baffle plate 205 increases the friction between it and the bellows, while also preventing external dust and impurities from easily sliding down to the interface of the suction pipe 203, thus providing a certain degree of protection. The wear-resistant soft rubber design of the conical block 208 extends its service life. Due to the elasticity of the soft rubber material, it ensures a tight grip when clamping the vacuum bellows, while avoiding squeezing damage to the outer wall of the bellows. Being on the same horizontal line ensures that when the conical block 208 clamps the vacuum bellows, the axis of the bellows is consistent with the axis of the suction pipe 203, allowing the suction pipe 203 to accurately connect with the bellows, ensuring the sealing and efficiency of the vacuuming process, and avoiding air leakage caused by docking deviation.

[0043] Working Principle: The helium mass spectrometer leak detector 4 is started first, entering the detection state, providing core gas analysis and detection functions for the entire leak detection process. The operator places the vacuum bellows to be tested on the top of the detection stage 1, positioning it in the detection area between the fixed plate 201 and the I-shaped clamping plate 207. Subsequently, two cylinders 206 are activated simultaneously, pushing the corresponding I-shaped clamping plate 207 to slide along the inner wall of the limiting groove 5, ensuring that the I-shaped clamping plate 207 can only move smoothly along the preset trajectory and preventing deviation. As the I-shaped clamping plate 207 moves closer to the fixed plate 201, the multiple conical blocks 208 on its top gradually contact and tightly adhere to the outer wall of the vacuum bellows, thereby achieving a stable clamping of the bellows. The fixed plate 201 acts as a clamping and detection device. The basic support of structure 2 includes valve 204, which controls the opening and closing of the gas extraction passage. After the operator opens valve 204, the helium mass spectrometer leak detector 4 can perform a vacuuming operation on the inside of the clamped vacuum bellows through the gas extraction pipe 203. The baffle plate 205 on the outer wall of the gas extraction pipe 203 can block external impurities from entering the gas extraction passage, ensuring a clean gas extraction environment. At the same time, the monitoring component 209 starts to operate: the vacuum pressure gauge 2092 on the top of the I-shaped clamping plate 207 monitors the vacuum degree inside the bellows in real time. The connecting hole 2091 at the left end of the cone block 208 serves as a gas pressure transmission channel, ensuring that the gas pressure inside the bellows can be accurately transmitted to the vacuum pressure gauge 2092, so that the operator can understand whether the vacuum degree meets the detection requirements, and thus quickly complete the detection of multiple workpieces.

[0044] Furthermore, through the nitrogen spraying mechanism 3, when the vacuum detection conditions are met, the handle 308 pushes the sliding frame 302, causing it to slide along the sliding groove 301 on the front and rear sides of the outer wall of the detection stage 1, thereby adjusting the position of the nozzle 307 so that the nozzle 307 is aligned with the part of the vacuum bellows to be tested. The function of the placement frame 303 is to fix the nitrogen tank 304 to ensure that the nitrogen tank 304 remains stable during movement. The nitrogen in the nitrogen tank 304 is transported to the split pipe 306 through the hose 305. After splitting, it is evenly sprayed onto the surface of the vacuum bellows by multiple nozzles 307. When there is a leak in the bellows under vacuum, the sprayed nitrogen will enter the bellows through the leak and be captured by the helium mass spectrometer leak detector 4. The instrument then determines the leak by analyzing the change in nitrogen concentration. The external component 6 can be connected to external equipment according to actual needs to realize the transmission of detection data or expand the detection function, thereby completing the detection work.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A vacuum bellows online helium mass spectrometry leak detection device, comprising a detection stage (1), characterized in that: A helium mass spectrometer leak detector (4) is fixedly connected to the bottom of the inner wall of the detection platform (1). A clamping detection mechanism (2) is provided on the top left side of the detection platform (1). A nitrogen spraying mechanism (3) is provided on the outer wall of the detection platform (1). The nitrogen spraying mechanism (3) is used to spray nitrogen gas. An external component (6) is provided on the right side of the helium mass spectrometer leak detector (4). The clamping and detection mechanism (2) includes a fixing plate (201). The bottom end of the fixing plate (201) is fixedly connected to the top left side of the detection table (1). The top left side of the helium mass spectrometer leak detector (4) is connected to multiple connecting pipes (202). The top end of the connecting pipe (202) passes through the left side of the fixing plate (201) and is connected to an extraction pipe (203). The top of the fixing plate (201) is fixedly connected to multiple valves (204). A baffle plate (205) is fixedly connected to the outer wall of (203). Cylinders (206) are fixedly connected to the front and rear sides of the top of the inner wall of the detection table (1). One end of each of the two cylinders (206) is fixedly connected to an I-shaped clamping plate (207). The top of the I-shaped clamping plate (207) penetrates the top of the outer wall of the detection table (1) and is fixedly connected to multiple conical blocks (208). A monitoring component (209) is provided at the top of the I-shaped clamping plate (207).

2. The vacuum bellows online helium mass spectrometry leak detection device according to claim 1, characterized in that: The nitrogen spraying mechanism (3) includes two slides (301). The outer walls of the two slides (301) are respectively opened on the front and rear sides of the outer wall of the detection platform (1). The inner walls of the two slides (301) are slidably connected to a sliding frame (302). The rear side of the sliding frame (302) is fixedly connected to a placement frame (303). The inner wall of the placement frame (303) is provided with a nitrogen tank (304). The top end of the nitrogen tank (304) is connected to a hose (305). The top end of the hose (305) is connected to a diverter pipe (306). The outer wall of the diverter pipe (306) penetrates the top end of the sliding frame (302) and is fixedly connected to multiple nozzles (307). The front side of the sliding frame (302) is fixedly connected to a handle (308).

3. The vacuum bellows online helium mass spectrometer leak detection device according to claim 1, characterized in that: The monitoring component (209) includes multiple connecting holes (2091), the outer walls of which are respectively opened at the left end of the conical block (208), and multiple vacuum pressure gauges (2092) are fixedly connected to the top of the I-shaped clamping plate (207).

4. The vacuum bellows online helium mass spectrometry leak detection device according to claim 1, characterized in that: A limiting groove (5) is provided at the top center of the testing platform (1), and the inner wall of the I-shaped clamping plate (207) is slidably connected to the inner wall of the limiting groove (5).

5. The vacuum bellows online helium mass spectrometer leak detection device according to claim 1, characterized in that: The external component (6) includes a switch (601), the outer wall of which is fixedly connected to the front right side of the helium mass spectrometer leak detector (4), an external interface (602) is fixedly connected to the bottom right side of the helium mass spectrometer leak detector (4), multiple data interfaces (603) are fixedly connected to the top right side of the helium mass spectrometer leak detector (4), and a power interface (604) is fixedly connected to the rear right side of the helium mass spectrometer leak detector (4).

6. The vacuum bellows online helium mass spectrometer leak detection device according to claim 1, characterized in that: The helium mass spectrometer leak detector (4) has grooves (7) on both the left and right sides of its outer wall, and multiple heat dissipation holes (8) are provided on the front side of the helium mass spectrometer leak detector (4).

7. The vacuum bellows online helium mass spectrometry leak detection device according to claim 2, characterized in that: The outer wall of the nitrogen tank (304) engages with the inner wall of the placement rack (303), and the outer wall of the baffle plate (205) is designed to be non-slip.

8. The vacuum bellows online helium mass spectrometry leak detection device according to claim 1, characterized in that: The outer wall of the conical block (208) is made of wear-resistant soft rubber, and the central axis of the conical block (208) and the air extraction pipe (203) are on the same horizontal line.

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