An explosive atmosphere test chamber

Abstract

This utility model discloses an explosive atmosphere test chamber, including a test chamber body with a pressure relief port. A flange is connected to the outer side of the pressure relief port, and a sealing cover plate is hinged to the flange. One end of the sealing cover plate is pressed tightly against the flange by a fastening assembly. The fastening assembly includes a U-shaped rod hinged to the test chamber body, with two fixing plates connected to the middle of the U-shaped rod. A bearing is connected to the other end of the fixing plate, and the two bearings are connected to each other by a sleeve. The inner wall of the sleeve has internal threads with opposite patterns at both ends, and a U-shaped pressure rod is threaded to both ends of the sleeve. A pressure block is connected to the other end of the U-shaped pressure rod. The sleeve is rotated by a drive assembly connected to the U-shaped rod. This utility model can safely and reliably depressurize the interior of the explosive atmosphere test chamber quickly and safely when an explosive gas explodes, ensuring the safety performance of the explosive atmosphere test chamber.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to an explosive atmosphere test chamber. Background Technology

[0002] Currently, many products in aerospace and aviation fields operate in environments containing explosive gases. Explosive gases such as methane can ignite even from a small spark. To ensure the safety of products potentially exposed to explosive gas environments, and to ensure that even if explosive gases are ignited, they will not cause fatal damage to the rockets, aircraft, or other structures containing the products, explosive atmosphere testing is necessary. Therefore, explosive atmosphere test chambers have been developed. These chambers conduct actual tests by placing test specimens within them. Existing explosive atmosphere test chambers can simulate explosive atmospheric environments and high-altitude low-pressure environments, and can also test whether the outer shell can prevent deflagration under conditions where the internal components of the test specimen have already detonated.

[0003] For explosive atmosphere test chambers, in the event of an explosion of explosive gases such as methane stored inside, instantaneous depressurization is required to ensure the safety of the entire explosive atmosphere test chamber.

[0004] However, there is currently no technology that can safely and reliably depressurize the interior of an explosive atmosphere test chamber quickly and safely in the event of an explosion of the explosive gas stored inside, thus ensuring the safety performance of the explosive atmosphere test chamber. Utility Model Content

[0005] The purpose of this invention is to provide an explosive atmosphere test chamber to solve the above-mentioned problems.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses an explosive atmosphere test chamber, comprising a test chamber body containing an explosive gas. The test chamber body has at least one pressure relief port, and a flange is connected to the outer side of each pressure relief port. A sealing cover is hinged to one end of each flange. The end of the sealing cover away from the hinge point with the flange is pressed tightly against the flange by a fastening assembly. The fastening assembly includes a U-shaped rod, the bottom of which is hinged to the test chamber body. Two fixing plates are connected to the middle of the U-shaped rod. A bearing is connected to the other end of the fixed plate. The two bearings are connected by a sleeve. The inner walls of the sleeve are respectively provided with internal threads with opposite patterns at both ends. A U-shaped pressure rod is threaded to both ends of the sleeve. A pressure block is connected to the other end of the U-shaped pressure rod. The upper pressure block presses on the sealing cover plate, and the lower pressure block abuts on the flange. Two limiting plates are provided on the outer side of the U-shaped pressure rod. The other end of the limiting plate is connected to the U-shaped rod. The sleeve is controlled to rotate by a drive assembly connected to the U-shaped rod.

[0008] Furthermore, the flange is sealed and welded to the top periphery of the pressure relief port.

[0009] Furthermore, the diameter of the sealing cover is larger than the diameter of the pressure relief port.

[0010] Furthermore, the flange is hinged to the sealing cover plate via a connecting hinge.

[0011] Furthermore, the test chamber body is provided with two pressure relief ports, which are respectively located on the left and right ends of the test chamber body.

[0012] Furthermore, the drive assembly includes a rotating shaft and a handwheel connected to the top of the rotating shaft. The bottom of the rotating shaft passes through the top of the U-shaped rod and two fixed plates in sequence via a bearing. A drive gear is connected to the shaft body and is positioned between the two fixed plates. A driven gear is connected to the sleeve, and the drive gear and the driven gear mesh with each other.

[0013] Furthermore, a sealing gasket is provided on the top surface of the flange.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention can safely and reliably depressurize the interior of an explosive atmosphere test chamber quickly and safely when an explosive gas explodes, ensuring the safety performance of the explosive atmosphere test chamber. It is conducive to popularization and has significant practical significance in production. The two pressure blocks on the fastening assembly can firmly fix the sealing cover to the flange, improving the sealing effect. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is an enlarged structural diagram of the fastening components, drive components, and their surrounding parts in the explosive atmosphere test chamber of this utility model;

[0018] Figure 2 Top view of the mounting plate;

[0019] Explanation of reference numerals in the attached drawings: 1. Main body of the test chamber; 2. Pressure relief port; 3. Flange; 4. Sealing cover plate; 5. U-shaped rod; 6. Fixing plate; 7. Bearing 1; 8. Sleeve; 9. U-shaped pressure rod; 10. Pressure block; 11. Limiting plate; 12. Connecting hinge; 13. Rotating shaft; 14. Handwheel; 15. Bearing 2; 16. Driving gear; 17. Driven gear; 18. Sealing gasket. Detailed Implementation

[0020] like Figures 1-2 As shown, an explosive atmosphere test chamber includes a test chamber body 1, which stores explosive gas.

[0021] The test chamber body 1 is provided with two pressure relief ports 2, which are respectively located on the left and right ends of the test chamber body 1.

[0022] Each of the pressure relief ports 2 is connected to a flange 3 on its outer side, and the flange 3 is sealed and welded to the top perimeter of the pressure relief port 2.

[0023] A sealing gasket 18 is provided on the top surface of the flange 3 to enhance the sealing effect.

[0024] A sealing cover plate 4 is hinged to one end of the flange 3 via a connecting hinge 12. The diameter of the sealing cover plate 4 is larger than the diameter of the pressure relief port 2, so that the sealing cover plate 4 can completely cover the pressure relief port 2.

[0025] The end of the sealing cover plate 4 away from the hinge point with the flange 3 is pressed tightly onto the flange 3 by a fastening assembly. The fastening assembly includes a U-shaped rod 5, the bottom of which is hinged to the test chamber body 1. Two fixing plates 6 are connected to the middle of the U-shaped rod 5. A bearing 7 is connected to the other end of the fixing plate 6. The two bearings 7 are connected to each other by a sleeve 8. The inner walls of the sleeve 8 are respectively provided with internal threads with opposite patterns. A U-shaped pressure rod 9 is threaded to both ends of the sleeve 8. A pressure block 10 is connected to the other end of the U-shaped pressure rod 9. The upper pressure block 10 presses on the sealing cover plate 4, and the lower pressure block 10 abuts against the flange 3. Two limiting plates 11 are provided on the outer side of the U-shaped pressure rod 9. The other end of the limiting plate 11 is connected to the U-shaped rod 5.

[0026] The sleeve 8 is controlled to rotate by a drive assembly connected to the U-shaped rod 5. The drive assembly includes a rotating shaft 13 and a handwheel 14 connected to the top of the rotating shaft 13. The bottom of the rotating shaft 13 passes through the top of the U-shaped rod 5 and two fixed plates 6 in sequence via a bearing 15. A drive gear 16 is connected to the shaft 13 and is positioned between the two fixed plates 6. A driven gear 17 is connected to the sleeve 8, and the drive gear 16 and the driven gear 17 mesh with each other. By rotating the handwheel 14, the rotating shaft 13 is rotated, which in turn causes the drive gear 16 to drive the driven gear 17 to rotate, thereby causing the sleeve 8 to rotate. The upper and lower U-shaped pressure rods 9 are restricted from rotating by the limiting plate 11, allowing the upper and lower U-shaped pressure rods 9 to move vertically upward or downward, so that the two pressure blocks 10 press on the sealing cover plate 4 and the flange 3 respectively, improving the locking and sealing effect.

[0027] The operation process of this utility model is as follows:

[0028] In use, press the sealing cover plate 4 onto the sealing gasket 18, then rotate the U-shaped rod 5 so that the U-shaped rod 5 is vertically positioned relative to the test chamber body 1. At this time, the upper and lower pressure blocks 10 are respectively placed above the sealing cover plate 4 and below the flange 3. Then rotate the handwheel 14 to make the rotating shaft 13 rotate, thereby causing the driving gear 16 to drive the driven gear 17 to rotate, thereby causing the sleeve 8 to rotate, so that the upper and lower U-shaped pressure rods 9 can move vertically and move closer to each other, so that the upper pressure block 10 presses on the sealing cover plate 4 and the lower pressure block 10 can press against the flange 3.

[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An explosive atmosphere test chamber, characterized in that: The test chamber includes a main body (1) containing explosive gas. At least one pressure relief port (2) is provided on the main body (1). A flange (3) is connected to the outer side of each pressure relief port (2). A sealing cover (4) is hinged to one end of the flange (3). The end of the sealing cover (4) away from the hinge point with the flange (3) is pressed tightly against the flange (3) by a fastening assembly. The fastening assembly includes a U-shaped rod (5). The bottom of the U-shaped rod (5) is hinged to the main body (1). Two fixing plates (6) are connected to the middle of the U-shaped rod (5). The other end of the fixing plates (6) is connected to... Bearing 1 (7), the two bearings 1 (7) are connected by a sleeve (8), the inner wall of the sleeve (8) is provided with internal threads with opposite patterns at both ends, and a U-shaped pressure rod (9) is threaded to both ends of the sleeve (8), and a pressure block (10) is connected to the other end of the U-shaped pressure rod (9). The upper pressure block (10) presses on the sealing cover plate (4), and the lower pressure block (10) abuts on the flange (3). Two limiting plates (11) are provided on the outside of the U-shaped pressure rod (9), and the other end of the limiting plate (11) is connected to the U-shaped rod (5). The sleeve (8) is controlled to rotate by a drive assembly connected to the U-shaped rod (5).

2. The explosive atmosphere test chamber according to claim 1, characterized in that: The flange (3) is sealed and welded to the top periphery of the pressure relief port (2).

3. The explosive atmosphere test chamber according to claim 1, characterized in that: The diameter of the sealing cover (4) is larger than the diameter of the pressure relief port (2).

4. The explosive atmosphere test chamber according to claim 1, characterized in that: The flange (3) is hinged to the sealing cover plate (4) via a connecting hinge (12).

5. The explosive atmosphere test chamber according to claim 1, characterized in that: The test chamber body (1) is provided with two pressure relief ports (2), which are respectively located on the left and right ends of the test chamber body (1).

6. The explosive atmosphere test chamber according to claim 1, characterized in that: The drive assembly includes a rotating shaft (13) and a handwheel (14) connected to the top of the rotating shaft (13). The bottom of the rotating shaft (13) passes through the top of the U-shaped rod (5) and two fixed plates (6) in sequence via a bearing (15). A drive gear (16) is connected to the shaft (13). The drive gear (16) is placed between the two fixed plates (6). A driven gear (17) is connected to the sleeve (8). The drive gear (16) and the driven gear (17) mesh with each other.

7. The explosive atmosphere test chamber according to claim 1, characterized in that: A sealing gasket (18) is provided on the top surface of the flange (3).

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