Ignition body helium fluidity detection device

Abstract

The utility model discloses an ignition body helium liquidity detection device, which is used for detecting the leakage rate of an ignition body by connecting a helium tank and helium leakage detection equipment, and comprises an upper die and a lower die which are arranged up and down, the upper die and the lower die are of hollow structures, the hollow parts of the upper die and the lower die are communicated, and the ignition body is placed in the communicated hollow part of the upper die and the lower die. The side wall of the ignition body is tightly attached to the inner wall of the upper die and the inner wall of the lower die, the upper die and the lower die are both connected with gas pipe joints, a press punch is arranged in the upper die and located on the ignition body, a toggle clamp is arranged on one side of the upper die, and a press head of the toggle clamp is located on the upper die. The utility model solves the problems that the internal space of the ignition body is narrow and the sealing performance is not easy to detect.

Description

Technical Field

[0001] This utility model belongs to the field of micro gas generator technology and relates to a device for detecting the helium flowability of igniting bodies. Background Technology

[0002] Miniature gas generators (MGGs) are primarily used in pretensioned seat belts. When a car experiences a severe collision, the MGG ignites and generates a large amount of high-temperature, high-pressure gas, which drives the seat belt drive wheel to rotate, causing the seat belt to wind onto the reel. Finally, an emergency locking retractor locks the seat belt, shortening the forward movement of the occupants and achieving a protective effect. The MGG is a core component of pretensioned seat belts, making the production of high-quality MGG products extremely crucial.

[0003] The MGG (Metal Gearbox) comprises components such as the igniter, propellant, and casing. The igniter is assembled from a base, an electric ignition tube, and a sealing ring using a riveting process. As the core component of the MGG, the quality of the igniter directly affects its sealing performance. Due to its confined internal space, conventional helium leak detection methods cannot accurately determine its sealing performance. Therefore, a device for testing the sealing performance of the igniter needs to be developed based on its structural characteristics. Utility Model Content

[0004] The purpose of this invention is to provide a helium flow detection device for igniters, which solves the problem of the small internal space of igniters making it difficult to detect their sealing performance.

[0005] The technical solution adopted in this utility model is a helium flowability detection device for igniting bodies. It detects the leakage rate of the igniting body by connecting a helium tank and a helium leak detection device. The device includes an upper mold and a lower mold, both of which are hollow structures. The hollow parts of the upper mold and the lower mold are connected. The igniting body is placed in the hollow part of the upper mold and the lower mold, and the side wall of the igniting body is tightly fitted with the inner wall of the upper mold and the inner wall of the lower mold. Both the upper mold and the lower mold are connected to gas pipe joints. A pressure punch is provided in the upper mold and is located on the igniting body. An elbow clamp is provided on one side of the upper mold, and the pressure head of the elbow clamp is located on the upper mold.

[0006] The features of this utility model also include:

[0007] The lower mold is barrel-shaped, and the upper mold is cylindrical. The upper end face of the lower mold is fixedly connected to the lower end face of the upper mold. The top of the upper mold is fixed with an upper mold cover. The upper mold cover, the upper mold, and the lower mold seal the hollow parts of the upper and lower molds.

[0008] The upper end face of the lower mold is provided with a groove A, and a sealing ring A is provided in the groove A.

[0009] The upper end face of the upper mold is provided with a groove B, and a sealing ring B is provided in the groove B.

[0010] The upper mold sidewall is fitted with a gas pipe connector via a pipe thread, and the gas pipe connector is connected to a helium cylinder via a connecting pipe.

[0011] The upper mold sidewall is symmetrically arranged with two air pipe joints with its axis as the axis of symmetry. The two air pipe joints are symmetrically arranged, and one of the air pipe joints is connected to a helium tank through a connecting pipe.

[0012] The stamping includes a hollow cylindrical rod set in the upper die, a coaxially arranged annular pressure plate fixed on the rod, and a spring sleeved on the rod. One end of the spring abuts against the upper die cover, and the other end abuts against the upper surface of the pressure plate. The shape of the bottom end of the rod matches the shape of the upper end of the ignition body base, and under the action of the spring, the top end of the rod is located in the spring, and the bottom end of the rod abuts against the upper end face of the ignition body base. The pressure plate has a through hole along its thickness direction, and a gas flow groove is formed on the side wall surface of the rod, which is arranged along the length direction of the rod.

[0013] The bottom side wall of the lower mold is provided with a gas pipe connector through a pipe thread. The gas pipe connector is connected to a helium leak detection device through a connecting pipe. The inner wall of the lower mold is provided with a shoulder, which is adapted to the shape of the ignition body.

[0014] The lower mold is fixed on the base plate, and a bearing seat is also fixed on the base plate. The bearing seat is fixed with a shaft fixing seat for the elbow clamp.

[0015] The bearing seat and the lower mold are both fixed to the base plate with bolts, and the bearing seat and the shaft fixing seat of the elbow clamp are also fixedly connected with bolts.

[0016] The beneficial effects of this utility model are:

[0017] This utility model relates to a helium flow detection device for igniting bodies. The igniting body is installed in the detection device of this utility model. The helium leak detection equipment detects the leak by introducing helium gas into the detection device, and finally detects the leakage rate of the igniting body. This overcomes the problem that the internal space of the igniting body is small and it is difficult to detect the sealing performance. The detection efficiency is high and the detection results are accurate. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the ignition body helium fluidity detection device of this utility model;

[0019] Figure 2 yes Figure 1 Cross-sectional view along the AA direction;

[0020] Figure 3 This is a top view of the ignition body helium flowability detection device of this utility model.

[0021] In the diagram, 1. base plate, 2. lower mold, 3. air pipe connector, 4. upper mold, 5. press, 6. sealing ring B, 7. bearing seat, 8. positioning pin, 9. upper mold cover, 10. spring, 11. bolt, 12. ignition body sealing ring, 13. elbow clamp, 14. sealing ring A, 15. ignition body. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1

[0024] This embodiment provides a helium flowability detection device for an igniter 15. The device detects the leakage rate of the igniter 15 by connecting a helium tank and a helium leak detection device. The device includes an upper mold 4 and a lower mold 2, which are both hollow structures. The hollow parts of the upper mold 4 and the lower mold 2 are connected. The igniter 15 is placed in the hollow part of the upper mold 4 and the lower mold 2, and the side wall of the igniter 15 is in close contact with the inner wall of the upper mold 4 and the inner wall of the lower mold 2. That is, the hollow part of the upper mold 4 and the lower mold matches the shape and size of the igniter. When the igniter 15 is placed in the upper mold 4 and the lower mold 2, the interiors of the upper mold 4 and the lower mold 2 are not connected. Both the upper mold 4 and the lower mold 2 are connected to a gas pipe connector 3. A pressure punch 5 is provided in the upper mold 4 and is located on the igniter 15. An elbow clamp 13 is provided on one side of the upper mold 4, and the pressure head of the elbow clamp 13 is located on the upper mold 4.

[0025] This embodiment represents only a preferred implementation of the igniter helium flowability detection device of this utility model. Any detection device designed using similar technical features to this utility model will fall within the protection scope of the igniter helium flowability detection device of this utility model.

[0026] Example 2

[0027] This embodiment provides a helium flowability detection device for an igniter 15. The device detects the leakage rate of the igniter 15 by connecting a helium tank and a helium leak detection device. The device includes an upper mold 4 and a lower mold 2, which are arranged vertically. The lower mold 2 is barrel-shaped, and the upper mold 4 is cylindrical. The upper end face of the lower mold 2 is fixedly connected to the lower end face of the upper mold 4. An upper mold cover 9 is fixed to the top of the upper mold 4. The upper mold cover 9, the upper mold 4, and the lower mold 2 seal the hollow parts of the upper mold 4 and the lower mold 2. The hollow parts of the upper mold 4 and the lower mold 2 are connected. The igniter 15 is placed in the hollow part of the upper mold 4 and the lower mold 2, and the side wall of the igniter 15 is tightly fitted with the inner wall of the upper mold 4 and the inner wall of the lower mold 2. Both the upper mold 4 and the lower mold 2 are connected to a gas pipe connector 3. A pressure punch 5 is provided in the upper mold 4 and is located on the igniter 15. An elbow clamp 13 is provided on one side of the upper mold 4, and the pressure head of the elbow clamp 13 is located on the upper mold 4.

[0028] This embodiment represents only a preferred implementation of the igniter helium flowability detection device of this utility model. Any detection device designed using similar technical features to this utility model will fall within the protection scope of the igniter helium flowability detection device of this utility model.

[0029] Example 3

[0030] This embodiment provides a helium flowability detection device for an igniter 15. It detects the leakage rate of the igniter 15 by connecting a helium tank and a helium leak detection device. The device includes an upper mold 4 and a lower mold 2, which are arranged vertically. The lower mold 2 is barrel-shaped, and the upper mold 4 is cylindrical. The upper end face of the lower mold 2 is fixedly connected to the lower end face of the upper mold 4. A groove A is provided on the upper end face of the lower mold 2, and a sealing ring A14 is installed in groove A to ensure the sealing of the contact surface between the upper mold 4 and the lower mold 2. An upper mold cover 9 is fixed to the top of the upper mold 4, and a groove B is provided on the upper end face of the upper mold 4, with a sealing ring installed in groove B. B6, to ensure the sealing of the contact surface of the upper mold 4 and the upper mold cover 9, the upper mold cover 9, the upper mold 4, and the lower mold 2 seal the hollow parts of the upper mold 4 and the lower mold 2, the hollow parts of the upper mold 4 and the lower mold 2 are connected, the igniter 15 is placed in the hollow part of the upper mold 4 and the lower mold 2, and the side wall of the igniter 15 is tightly fitted with the inner wall of the upper mold 4 and the inner wall of the lower mold 2. Both the upper mold 4 and the lower mold 2 are connected to the air pipe connector 3. The upper mold 4 is provided with a punch 5, which is located on the igniter 15. The upper mold 4 is provided with an elbow clamp 13 on one side, and the pressure head of the elbow clamp 13 is located on the upper mold 4.

[0031] This embodiment represents only a preferred implementation of the igniter helium flowability detection device of this utility model. Any detection device designed using similar technical features to this utility model will fall within the protection scope of the igniter helium flowability detection device of this utility model.

[0032] Example 4

[0033] This embodiment provides a helium flowability detection device for an igniter 15. The device detects the leakage rate of the igniter 15 by connecting a helium tank and a helium leak detection device. The device includes an upper mold 4 and a lower mold 2, which are both hollow structures. The hollow parts of the upper mold 4 and the lower mold 2 are connected. The igniter 15 is placed in the hollow part of the upper mold 4 and the lower mold 2, and the side wall of the igniter 15 is in close contact with the inner wall of the upper mold 4 and the inner wall of the lower mold 2. That is, the hollow part of the upper mold 4 and the lower mold matches the shape and size of the igniter. When the igniter 15 is placed in the upper mold 4 and the lower mold 2, the interiors of the upper mold 4 and the lower mold 2 are not connected. A pressure punch 5 is provided in the upper mold 4 and is located on the igniter 15. An elbow clamp 13 is provided on one side of the upper mold 4, and the pressure head of the elbow clamp 13 is located on the upper mold 4.

[0034] The upper mold 4 has a gas pipe connector 3 on its side wall through a pipe thread. The gas pipe connector 3 is connected to a helium tank through a connecting pipe. The helium tank is used to fill the upper mold with helium through the gas pipe connector.

[0035] The bottom side wall of the lower mold 2 is provided with a gas pipe connector 3 through a pipe thread. The gas pipe connector 3 is connected to a helium leak detection device through a connecting pipe. The helium leak detection device is used to detect helium in the lower mold. The inner wall of the lower mold 2 is provided with a shoulder, which is adapted to the shape of the ignition body 15.

[0036] This embodiment represents only a preferred implementation of the igniter helium flowability detection device of this utility model. Any detection device designed using similar technical features to this utility model will fall within the protection scope of the igniter helium flowability detection device of this utility model.

[0037] Example 5

[0038] This embodiment provides a helium flowability detection device for an igniter 15. The device detects the leakage rate of the igniter 15 by connecting a helium tank and a helium leak detection device. The device includes an upper mold 4 and a lower mold 2, which are both hollow structures. The hollow parts of the upper mold 4 and the lower mold 2 are connected. The igniter 15 is placed in the hollow part of the upper mold 4 and the lower mold 2, and the side wall of the igniter 15 is in close contact with the inner wall of the upper mold 4 and the inner wall of the lower mold 2. That is, the hollow part of the upper mold 4 and the lower mold matches the shape and size of the igniter. When the igniter 15 is placed in the upper mold 4 and the lower mold 2, the interiors of the upper mold 4 and the lower mold 2 are not connected. A pressure punch 5 is provided in the upper mold 4 and is located on the igniter 15. An elbow clamp 13 is provided on one side of the upper mold 4, and the pressure head of the elbow clamp 13 is located on the upper mold 4.

[0039] The upper mold 4 has two gas pipe connectors 3 symmetrically arranged on its side wall with its axis as the axis of symmetry. One of the gas pipe connectors 3 is connected to a helium tank through a connecting pipe, and the other gas pipe connector 3 is either blocked or connected to an external nitrogen source. The purpose of connecting to an external nitrogen source is to first introduce nitrogen into the upper mold 4 before introducing helium, thereby purging the air in the upper mold 4 and the lower mold and avoiding errors in the detection of helium caused by the gas composition in the air.

[0040] The bottom side wall of the lower mold 2 is provided with a gas pipe connector 3 through a pipe thread. The gas pipe connector 3 is connected to a helium leak detection device through a connecting pipe. The helium leak detection device is used to detect helium in the lower mold. The inner wall of the lower mold 2 is provided with a shoulder, which is adapted to the shape of the ignition body 15.

[0041] This embodiment represents only a preferred implementation of the igniter helium flowability detection device of this utility model. Any detection device designed using similar technical features to this utility model will fall within the protection scope of the igniter helium flowability detection device of this utility model.

[0042] Example 6

[0043] This embodiment provides a helium flowability detection device for an igniter 15. The device detects the leakage rate of the igniter 15 by connecting a helium tank and a helium leak detection device. The device includes an upper mold 4 and a lower mold 2, which are arranged vertically. The lower mold 2 is barrel-shaped, and the upper mold 4 is cylindrical. The upper end face of the lower mold 2 is fixedly connected to the lower end face of the upper mold 4. An upper mold cover 9 is fixed to the top of the upper mold 4. The upper mold cover 9, the upper mold 4, and the lower mold 2 seal the hollow parts of the upper mold 4 and the lower mold 2. The hollow parts of the upper mold 4 and the lower mold 2 are connected. The igniter 15 is placed in the hollow part of the upper mold 4 and the lower mold 2, and the side wall of the igniter 15 is tightly fitted with the inner wall of the upper mold 4 and the inner wall of the lower mold 2. Both the upper mold 4 and the lower mold 2 are connected to a gas pipe connector 3. A pressure punch 5 is provided in the upper mold 4 and is located on the igniter 15. An elbow clamp 13 is provided on one side of the upper mold 4, and the pressure head of the elbow clamp 13 is located on the upper mold 4.

[0044] The press 5 includes a hollow cylindrical rod disposed in the upper mold 4. A coaxially arranged annular pressure plate is fixed on the rod. A spring 10 is also sleeved on the rod. One end of the spring 10 abuts against the upper mold cover 9, and the other end abuts against the upper surface of the pressure plate. The shape of the bottom end of the rod matches the shape of the upper end of the base of the igniter 15. Under the action of the spring 10, the top end of the rod is located in the spring 10, and the bottom end of the rod abuts against the upper end surface of the base of the igniter 15, thus fixing the igniter 15. The pressure plate has a through hole along its thickness direction, and a gas flow groove is formed on the side wall surface of the rod. The gas flow groove is arranged along the length direction of the rod. Both the through hole and the gas flow groove are used to allow helium gas filled from the upper mold 4 to flow quickly to the igniter 15. This embodiment only represents a preferred embodiment of the igniter helium flowability detection device of this utility model. Any detection device designed with similar technical features to this utility model will fall within the protection scope of the igniter helium flowability detection device of this utility model.

[0045] Example 7

[0046] This embodiment provides a helium flowability detection device for igniting bodies, which detects the leakage rate of the igniting body 15 by connecting a helium cylinder and a helium leak detection device. Figure 1-3 As shown, it includes a base plate 1, and also includes an upper mold 4 and a lower mold 2 arranged vertically. A positioning pin 8 is provided between the upper mold 4 and the lower mold 2 for positioning. The lower mold 2 is fixed to the base plate 1 by bolts 11. A bearing 7 is also fixed to the base plate 1 by bolts 11. An elbow clamp 13 is fixed to the bearing 7 by bolts 11. The elbow clamp 13 is located on one side of the upper mold 4.

[0047] The lower mold 2 is barrel-shaped, and the upper mold 4 is cylindrical. The upper end face of the lower mold 2 is fixedly connected to the lower end face of the upper mold 4. The upper end face of the lower mold 2 is provided with a groove A, and a sealing ring A14 is provided in the groove A. The top of the upper mold 4 is fixed with an upper mold cover 9. The upper end face of the upper mold 4 is provided with a groove B, and a sealing ring B6 is provided in the groove B. The upper mold cover 9, the upper mold 4, and the lower mold 2 seal the hollow parts of the upper mold 4 and the lower mold 2. The hollow parts of the upper mold 4 and the lower mold 2 are connected. The igniter 15 is placed in the hollow part of the upper mold 4 and the lower mold 2, and the side wall of the igniter 15 is tightly fitted with the inner wall of the upper mold 4 and the inner wall of the lower mold 2. A punch 5 is provided in the upper mold 4, and the punch 5 is located on the igniter 15. An elbow clamp 13 is provided on one side of the upper mold 4, and the pressure head of the elbow clamp 13 is located on the upper mold 4.

[0048] The upper mold 4 has two gas pipe joints 3 symmetrically arranged on its side wall with its axis as the axis of symmetry. One of the gas pipe joints 3 is connected to a helium tank through a connecting pipe. The bottom side wall of the lower mold 2 has a gas pipe joint 3 through a pipe thread. The gas pipe joint 3 is connected to a helium leak detection device through a connecting pipe. The inner wall of the lower mold 2 is provided with a shoulder, which is adapted to the shape of the ignition body 15 to ensure the accurate positioning of the ignition body 15.

[0049] The press 5 includes a hollow cylindrical rod set in the upper die 4. A coaxially arranged annular pressure plate is fixed on the rod. A spring 10 is also sleeved on the rod. One end of the spring 10 abuts against the upper die cover 9, and the other end abuts against the upper surface of the pressure plate. The shape of the bottom end of the rod matches the shape of the upper end of the base of the igniter 15. Under the action of the spring 10, the top end of the rod is located in the spring 10, and the bottom end of the rod abuts against the upper end surface of the base of the igniter 15. The pressure plate has a through hole along its thickness direction, and a gas flow groove is formed on the side wall surface of the rod. The gas flow groove is set along the length direction of the rod.

[0050] This embodiment represents only a preferred implementation of the igniter helium flowability detection device of this utility model. Any detection device designed using similar technical features to this utility model will fall within the protection scope of the igniter helium flowability detection device of this utility model.

[0051] The process of detecting the leakage rate of an ignition body using this utility model's helium fluidity detection device in conjunction with a helium cylinder and helium leak detection equipment is as follows:

[0052] Step 1: Check and ensure the device power cord is securely connected;

[0053] Step 2: Check and ensure that the gas pipe connection between the helium cylinder, the helium leak detection equipment and the helium flowability detection device of this utility model is normal;

[0054] Step 3: Turn on the helium leak detector switch to start the equipment; the equipment display screen will light up.

[0055] Step 4: Close the inlet valve between the helium tank and the detection device of this utility model, adjust the helium tank switch, confirm that the pressure gauge of the helium tank shows a pressure > 0, adjust the pressure reducing valve of the helium tank, and confirm that the pressure gauge of the gas pipe inlet shows a pressure between 0.1MPa and 0.3MPa.

[0056] Step 5: Put the ignition body sealing ring 12 on the top of the ignition body to be tested, and put the ignition body into the detection device of this utility model;

[0057] Step 6: Assemble the detection device of this utility model, manually press down the elbow clamp 13 so that the pressure head of the elbow clamp 13 exerts a certain pressure on the upper mold cover 9 to ensure a tight connection between the tooling.

[0058] Step 7: Press the inflation button for 1 to 3 seconds to fill helium into the upward mold 4;

[0059] Step 8: Close the cover of the leak detection box of the helium leak detection equipment. The equipment will automatically draw a vacuum for detection. Helium flows through the through hole on the pressure plate, the gas flow groove on the rod, and the gap between the pressure plate and the inner wall of the upper mold 4 to the ignition body. It then flows from the top of the ignition body to the bottom and into the lower mold 2. After the helium leak detection equipment completes the test, the value on the display screen is recorded as the helium flowability detection value of the ignition body.

[0060] Step 9: Press the exhaust button for at least 3 seconds, open the helium flowability testing fixture, remove the test igniter, and replace the igniter sealing ring 12;

[0061] Step 10: Repeat steps 5-9 to perform helium flowability testing on the next ignition source to be tested.

Claims

1. A helium flowability detection device for igniting bodies, which detects the leakage rate of an igniting body (15) by connecting a helium tank and a helium leak detection device, characterized in that, The device includes an upper mold (4) and a lower mold (2) arranged vertically. Both the upper mold (4) and the lower mold (2) are hollow structures. The hollow parts of the upper mold (4) and the lower mold (2) are connected. The igniter (15) is placed in the hollow part of the upper mold (4) and the lower mold (2) and the side wall of the igniter (15) is tightly fitted with the inner wall of the upper mold (4) and the inner wall of the lower mold (2). Both the upper mold (4) and the lower mold (2) are connected to a gas pipe connector (3). A punch (5) is provided in the upper mold (4). The punch (5) is located on the igniter (15). An elbow clamp (13) is provided on one side of the upper mold (4). The pressure head of the elbow clamp (13) is located on the upper mold (4).

2. The ignition body helium flowability detection device according to claim 1, characterized in that, The lower mold (2) is barrel-shaped, and the upper mold (4) is cylindrical. The upper end face of the lower mold (2) is fixedly connected to the lower end face of the upper mold (4). The top of the upper mold (4) is fixed with an upper mold cover (9). The upper mold cover (9), the upper mold (4), and the lower mold (2) seal the hollow parts of the upper mold (4) and the lower mold (2).

3. The ignition body helium flowability detection device according to claim 2, characterized in that, The upper end face of the lower mold (2) is provided with a groove A, and a sealing ring A (14) is provided in the groove A.

4. The ignition body helium flowability detection device according to claim 2, characterized in that, The upper end face of the upper mold (4) is provided with a groove B, and a sealing ring B (6) is provided in the groove B.

5. The ignition body helium flowability detection device according to claim 1, characterized in that, The upper mold (4) has a gas pipe connector (3) on its side wall through a pipe thread, and the gas pipe connector (3) is connected to a helium tank through a connecting pipe.

6. The ignition body helium flowability detection device according to claim 1, characterized in that, The upper mold (4) has two air pipe joints (3) symmetrically arranged on its side wall with its axis as the axis of symmetry. The two air pipe joints (3) are symmetrically arranged, and one of the air pipe joints (3) is connected to a helium tank through a connecting pipe.

7. The ignition body helium flowability detection device according to claim 2, characterized in that, The press (5) includes a hollow cylindrical rod set in the upper mold (4), a coaxially arranged annular pressure plate fixed on the rod, and a spring (10) sleeved on the rod. One end of the spring (10) abuts against the upper mold cover (9), and the other end abuts against the upper surface of the pressure plate. The shape of the bottom end of the rod matches the shape of the upper end of the base of the igniter (15), and under the action of the spring (10), the top end of the rod is located in the spring (10), and the bottom end of the rod abuts against the upper end surface of the base of the igniter (15). The pressure plate has a through hole along its thickness direction, and a gas flow groove is formed on the side wall surface of the rod. The gas flow groove is set along the length direction of the rod.

8. The ignition body helium flowability detection device according to claim 1, characterized in that, The bottom side wall of the lower mold (2) is provided with a gas pipe connector (3) through a pipe thread. The gas pipe connector (3) is connected to a helium leak detection device through a connecting pipe. The inner wall of the lower mold (2) is provided with a shoulder platform, which is adapted to the shape of the ignition body (15).

9. The ignition body helium flowability detection device according to claim 1, characterized in that, The lower mold (2) is fixed on the base plate (1), and a bearing (7) is also fixed on the base plate (1). The bearing (7) has a shaft fixing seat for the elbow clamp (13).

10. The ignition body helium flowability detection device according to claim 9, characterized in that, The bearing (7) and the lower mold (2) are both fixed to the base plate (1) by bolts (11), and the bearing (7) and the shaft fixing seat of the elbow clamp (13) are also fixedly connected by bolts.

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