Balanced pressure relief port of high temperature thermal shock test chamber

Abstract

This utility model discloses a balanced pressure relief port for a high-temperature thermal shock test chamber, relating to the technical field of high-temperature thermal shock test chambers. It includes a test chamber body, with a top plate fixedly installed on the top of the body. A pressure relief exhaust pipe and a connecting pipe are fixedly installed through and on the top of the top plate. The connecting pipe is fixedly installed on the top of the top plate, with its upper end located inside the pressure relief exhaust pipe. A sealing cap is provided at the upper end of the connecting pipe. In this utility model, when the internal air pressure of the test chamber body reaches a threshold, the air inside the test chamber body pushes and flips the sealing cap, allowing excess gas to be transported through the connecting pipe to the pressure relief exhaust pipe, and then discharged through the exhaust duct. This stabilizes the internal pressure of the test chamber body, preventing temperature fluctuations due to pressure changes and protecting the sheet metal inside the test chamber body from deformation caused by pressure variations.

Description

Technical Field

[0001] This utility model relates to the technical field of high temperature thermal shock test chambers, and in particular to a balanced pressure relief port for a high temperature thermal shock test chamber. Background Technology

[0002] A high-temperature thermal shock test chamber is a testing device that simulates extreme temperature change environments. It is mainly used to evaluate the tolerance, reliability and stability of materials, components or products under rapid high-temperature changes. The high-temperature chamber generates heat through heating elements such as electric heaters, while insulation materials are used to reduce heat loss, thereby maintaining the set high-temperature environment.

[0003] In the existing technology, due to the high temperature inside the high-temperature chamber and the fact that the chamber is sealed, the pressure inside the high-temperature thermal shock test chamber increases due to the temperature, and the change in pressure will in turn affect the temperature. This causes the temperature inside the high-temperature thermal shock test chamber to fluctuate, affecting the accuracy of the test results. The high pressure generated by the high temperature will also put pressure on the sheet metal inside the high-temperature thermal shock test chamber, which can easily lead to sheet metal deformation and reduce the service life and sealing performance of the high-temperature thermal shock test chamber. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a balanced pressure relief port for a high-temperature thermal shock test chamber. This solves the problem that the internal pressure of the high-temperature thermal shock test chamber increases due to temperature fluctuations, and these pressure changes, in turn, affect the temperature, causing temperature fluctuations within the chamber and impacting the accuracy of experimental results. Furthermore, the high pressure generated by the high temperature can exert pressure on the sheet metal inside the chamber, easily leading to sheet metal deformation and reducing the service life and sealing performance of the high-temperature thermal shock test chamber.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A balanced pressure relief port for a high-temperature thermal shock test chamber includes a test chamber body, a top plate fixedly installed on the top of the test chamber body, and a pressure relief exhaust pipe passing through and fixedly installed on the top of the top plate; A connecting pipe is fixedly installed on the top of the top plate, the upper port of the connecting pipe is located inside the pressure relief exhaust pipe, and a sealing cap is provided at the upper end of the connecting pipe; A torque adjustment assembly is installed between the connecting pipe and the sealing cap, and is used to adjust the torque required to rotate the sealing cap; An exhaust assembly is mounted on the top plate and is used to exhaust waste gas from inside the test chamber.

[0006] Preferably, the torque adjustment assembly includes: The second shaft seat is fixedly installed on the outer wall of the connecting pipe. The first shaft seat is fixedly installed on one side of the top of the sealing cover. A connecting shaft is rotatably installed between the first shaft seat and the second shaft seat. A torsion spring is sleeved on the outer wall of the connecting shaft. A sleeve knob is sleeved on one end of the connecting shaft. A limiting plate is fixedly installed on one end of the sleeve knob. The limiting plate is sleeved on the outer wall of the connecting shaft. A connecting rod is slidably installed between the two sides of the top of the first shaft seat. A locking block is fixedly installed on the outer wall of the middle part of the connecting rod. The locking block can engage with the edge groove of the limiting plate. Multiple evenly distributed grooves are opened around the edge of the limiting plate.

[0007] Preferably, the exhaust assembly includes: A fan is fixedly installed on the top of the roof plate. An exhaust duct is fixedly installed at the output end of the fan. The other end of the pressure relief exhaust pipe passes through and is fixedly connected to the exhaust duct.

[0008] Preferably, a spring is sleeved on the outer wall of the connecting rod, one end of the spring is fixedly connected to the locking block, and the other end of the spring abuts against the inner side wall of the first bearing seat. The spring is initially in a semi-compressed state.

[0009] Preferably, a threaded sleeve is provided on one side of the first shaft seat, and one end of the connecting rod passes through and is threadedly connected to the threaded sleeve.

[0010] Preferably, one end of the torsion spring is fixedly connected to the first shaft seat, and the other end of the torsion spring is fixedly connected to the limiting plate.

[0011] Preferably, the sleeve knob passes through and is movably connected to the first and second shaft seats.

[0012] Preferably, a partition is fixedly installed on the upper inner wall of the test chamber body, and the lower end of the connecting pipe passes through and is fixedly connected to the partition.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By operating the torque adjustment component, the threshold value required for flipping the sealing cover can be controlled. When the air pressure inside the test chamber reaches the threshold, the air inside the test chamber will push and flip the sealing cover, so that the excess gas is transported to the pressure relief exhaust pipe through the connecting pipe, and then discharged through the exhaust duct. This makes the pressure inside the test chamber relatively stable, avoids temperature fluctuations inside the chamber due to pressure changes, and protects the sheet metal inside the test chamber from deformation caused by pressure changes. Attached Figure Description

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the regional structure of the top plate in this utility model; Figure 3 This is a schematic diagram of the regional structure of the pressure relief exhaust pipe in this utility model; Figure 4 This is a cross-sectional view of the pressure relief exhaust pipe in this utility model; Figure 5 This is a schematic diagram of the regional structure of the connecting pipe in this utility model; Figure 6 This is a schematic diagram of the adjustment state of the torque adjustment component in this utility model; Figure 7 This utility model Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the torque adjustment component in its normal state according to this utility model; Figure 9 This utility model Figure 8 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram of the regional structure of the limiting plate in this utility model; Figure 11 This is a schematic diagram of the regional structure of the sealing cap in this utility model.

[0016] Legend: 1. Test chamber body; 2. Top plate; 3. Pressure relief exhaust pipe; 4. Threaded sleeve; 5. Partition plate; 6. Connecting pipe; 7. Fan; 8. Exhaust gas duct; 9. Sealing cover; 10. First shaft seat; 11. Second shaft seat; 12. Torsion spring; 13. Limiting plate; 14. Connecting shaft; 15. Spring; 16. Connecting rod; 17. Sleeve knob; 18. Locking block. Detailed Implementation

[0017] This application provides a balanced pressure relief port for a high-temperature thermal shock test chamber, which effectively solves the problem that the internal pressure of the high-temperature thermal shock test chamber increases due to the influence of temperature, and the change in pressure also affects the temperature, causing temperature fluctuations inside the high-temperature thermal shock test chamber, affecting the accuracy of experimental results. Furthermore, the high pressure generated by the high temperature also puts pressure on the sheet metal inside the high-temperature thermal shock test chamber, which can easily lead to sheet metal deformation, reducing the service life and sealing performance of the high-temperature thermal shock test chamber. Example

[0018] like Figure 1 - Figure 11 As shown, the technical solution in this application embodiment effectively solves the technical problem that the pressure inside the high-temperature thermal shock test chamber increases due to the influence of temperature, and the change in pressure, in turn, affects the temperature, causing temperature fluctuations inside the high-temperature thermal shock test chamber, which affects the accuracy of experimental results. Furthermore, the high pressure generated by the high temperature also applies pressure to the sheet metal inside the high-temperature thermal shock test chamber, easily leading to sheet metal deformation, reducing the service life and sealing performance of the high-temperature thermal shock test chamber. Specifically: Test chamber body 1: This is the main body of the high-temperature thermal shock test chamber; Top plate 2: is an aluminum alloy square plate, which is fixed to the top of the test chamber body 1 with bolts; Pressure relief exhaust pipe 3: It is a metal pipe. One end is fixed to the top plate 2 by flange and bolts, and the other end is fixed to the exhaust duct 8 by welding and connected to the interior of the exhaust duct 8. Threaded sleeve 4: It is a metal sleeve with threads on the inner hole and a high-temperature resistant silicone sleeve on the outer wall; Partition 5: It is an aluminum alloy square plate, which is fixed to the inner wall of the test chamber body 1 by bolts, and is used to separate the internal cavity of the test chamber body 1 from the outside. Connecting pipe 6: It is a stainless steel round pipe with two flanges welded on the outer wall. The upper and lower flanges are fixed to the top plate 2 and the partition plate 5 respectively by bolts. The upper end is a bevel. Blower 7: is a Roots blower, which is fixed to the top plate 2 by a metal bracket and bolts. The input end is connected to the internal cavity of the test chamber body 1 through a metal pipe for exhausting waste gas. Exhaust gas duct 8: One end is fixed to the output end of the fan 7 by bolts, and the other end is connected to the ventilation duct of the workshop; Sealing cap 9: It is an oval aluminum plate with a silicone gasket glued to the bottom. The position of the silicone gasket is aligned with the bevel of the upper end of the connecting pipe 6 to avoid hard contact between the sealing cap 9 and the connecting pipe 6 and reduce noise. First bearing seat 10: is a metal bearing seat, which is fixed to the sealing cover 9 by bolts; Second bearing seat 11: is a metal bearing seat, which is fixed to the upper end of the outer wall of the connecting pipe 6 by bolts; Torsion spring 12: It is a metal torsion spring. One end is fixed to the first shaft seat 10 by welding, and the other end is inserted into the through hole on the side wall of the limiting plate 13 and reinforced by adhesive bonding. Limiting plate 13: It is a disc-shaped metal with multiple evenly distributed grooves around the outer edge. By engaging with the locking block 18, it can limit the rotation of the test chamber body 1. A through hole is provided on one side of the outer wall to limit one end of the torsion spring 12. Connecting shaft 14: It is a metal shaft, one end of which is rotatably connected to the first shaft seat 10 and the second shaft seat 11, and the other end can rotate relative to the sleeve knob 17; Spring 15: It is a metal spring, one end of which is welded to the locking block 18, and the other end abuts against the inner wall of the first bearing seat 10. Its initial state is a semi-compressed state. Connecting rod 16: It is a metal rod that passes through the locking block 18 and is fixed to the locking block 18 by bolts. A key is welded on the outer wall for sliding connection of the first bearing 10 and the second bearing 11. One end of the outer wall is threaded. Sleeve knob 17: It is a metal round tube, one end of which is fixed to the limiting plate 13 by welding, and the other end is fitted with a rubber sleeve on the outer wall. Block 18: Composed of a metal disc and a square metal strip, which are welded together. It has a through hole inside for connecting rod 16. Example

[0019] As shown in the exhaust duct 8, the locking block 18 and the limiting plate 13 are in a separated state. By rotating the threaded sleeve 4, the thread engagement length between the connecting rod 16 and the threaded sleeve 4 is increased. Then, the connecting rod 16 will drive the locking block 18 to compress the spring 15 and move towards the threaded sleeve 4, so that the locking block 18 is disengaged from the limiting plate 13. In this state, the limiting plate 13 can rotate freely, so that the function of the torsion spring 12 is disabled. Only a small amount of pressure is needed to open the sealing cover 9. Example

[0020] As shown in the connecting pipe 6, the locking block 18 and the limiting plate 13 are engaged. At this time, the limiting plate 13 cannot rotate freely. Then the function of the torsion spring 12 is restored, so that a reverse torque can be applied to the flipping of the sealing cover 9. The sealing cover 9 can only be opened when the pressure of the gas inside the connecting pipe 6 is greater than the torque. By rotating the limiting plate 13 a certain number of turns, the torsion spring 12 is deformed, thereby changing the magnitude of the torque. Then the locking block 18 is used to restrict the limiting plate 13. Thus, the pressure required to flip the sealing cover 9 can be adjusted according to the needs, thereby controlling the pressure relief threshold.

[0021] Working principle: The first step is that when the air pressure inside the test chamber body 1 reaches the threshold, the air inside the test chamber body 1 will push and flip the sealing cover 9, so that the excess gas is transported to the pressure relief exhaust pipe 3 through the connecting pipe 6, and then discharged through the exhaust duct 8, so that the pressure inside the test chamber body 1 is relatively stable, and the temperature inside the chamber is avoided due to pressure changes.

[0022] The second step is to adjust the pressure threshold required to flip the sealing cover 9. This can be done by rotating the threaded sleeve 4 to increase the thread engagement length between the connecting rod 16 and the threaded sleeve 4. Then, the connecting rod 16 will drive the locking block 18 to compress the spring 15 and move it closer to the threaded sleeve 4, causing the locking block 18 to disengage from the limiting plate 13. In this state, the limiting plate 13 can rotate freely, causing the torsion spring 12 to fail. Only a small amount of pressure is needed to open the sealing cover 9.

[0023] The third step involves rotating the sleeve knob 17 and causing the limiting disc 13 to rotate a certain number of times, which causes the torsion spring 12 to deform and change the number of twists, thereby changing the magnitude of the torque. Then, the locking block 18 is used to restrict the limiting disc 13, so that the pressure required for flipping the sealing cover 9 can be adjusted as needed, thereby controlling the pressure relief threshold.

[0024] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A balanced pressure relief port for a high-temperature thermal shock test chamber, characterized in that, include: The test chamber body (1) has a top plate (2) fixedly installed on the top of the test chamber body (1), and a pressure relief exhaust pipe (3) is fixedly installed through the top of the top plate (2). A connecting pipe (6) is fixedly installed on the top of the top plate (2). The upper port of the connecting pipe (6) is located inside the pressure relief exhaust pipe (3). A sealing cap (9) is provided at the upper end of the connecting pipe (6). A torque adjustment assembly is installed between the connecting pipe (6) and the sealing cover (9) and is used to adjust the torque required to rotate the sealing cover (9); An exhaust assembly is installed on the top plate (2) and is used to exhaust the waste gas inside the test chamber body (1).

2. The balanced pressure relief port of a high-temperature thermal shock test chamber as described in claim 1, characterized in that, The torque adjustment component includes: The second shaft seat (11) is fixedly installed on the outer wall of the connecting pipe (6). The first shaft seat (10) is fixedly installed on one side of the top of the sealing cover (9). A connecting shaft (14) is rotatably installed between the first shaft seat (10) and the second shaft seat (11). A torsion spring (12) is sleeved on the outer wall of the connecting shaft (14). A sleeve knob (17) is sleeved on one end of the connecting shaft (14). A limiting plate (13) is fixedly installed on one end of the sleeve knob (17). The limiting plate (13) is sleeved on the outer wall of the connecting shaft (14). A connecting rod (16) is slidably installed between the two sides of the top of the first shaft seat (10). A locking block (18) is fixedly installed on the outer wall of the middle part of the connecting rod (16). The locking block (18) can engage with the edge groove of the limiting plate (13).

3. The balanced pressure relief port of a high-temperature thermal shock test chamber as described in claim 1, characterized in that, The exhaust assembly includes: The fan (7) is fixedly installed on the top of the top plate (2). The exhaust duct (8) is fixedly installed at the output end of the fan (7). The other end of the pressure relief exhaust pipe (3) passes through and is fixedly connected to the exhaust duct (8).

4. The balanced pressure relief port of a high-temperature thermal shock test chamber as described in claim 2, characterized in that: A spring (15) is fitted on the outer wall of the connecting rod (16). One end of the spring (15) is fixedly connected to the locking block (18), and the other end of the spring (15) abuts against the inner wall of the first shaft seat (10).

5. The balanced pressure relief port of a high-temperature thermal shock test chamber as described in claim 2, characterized in that: A threaded sleeve (4) is provided on one side of the first shaft seat (10), and one end of the connecting rod (16) passes through and is threadedly connected to the threaded sleeve (4).

6. The balanced pressure relief port of a high-temperature thermal shock test chamber as described in claim 2, characterized in that: One end of the torsion spring (12) is fixedly connected to the first shaft seat (10), and the other end of the torsion spring (12) is fixedly connected to the limiting plate (13).

7. The balanced pressure relief port of a high-temperature thermal shock test chamber as described in claim 2, characterized in that: The sleeve knob (17) passes through and is movably connected to the first bearing seat (10) and the second bearing seat (11).

8. The balanced pressure relief port of a high-temperature thermal shock test chamber as described in claim 1, characterized in that: A partition (5) is fixedly installed on the upper inner wall of the test chamber body (1), and the lower end of the connecting pipe (6) passes through and is fixedly connected to the partition (5).

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