An explosion-proof test chamber with mechanical self-locking pressure relief function

Abstract

This utility model belongs to the technical field of test chambers, and specifically relates to an explosion-proof test chamber with a mechanical self-locking pressure relief function. It includes: a pressure relief port, located on the top of the test chamber and sealed and fastened to a pressure relief plate; a hinge assembly, through which the pressure relief plate is rotatably connected to the top of the test chamber; and a mechanical locking assembly, through which the pressure relief plate is locked to the top of the test chamber; it also includes: a fixed base, pins, a torsion spring, a groove, a pressure roller, and a locking tongue; the fixed base is mounted on the pressure relief plate, and two pins are inserted at intervals on the fixed base, with the torsion spring sleeved on each pin, one end of which abuts against the pressure roller. This utility model, through the design of the mechanical locking assembly, enables the pressure relief plate to achieve autonomous pressure relief without the need for electric control, thus improving the reliability of pressure relief.

Description

Technical Field

[0001] This utility model belongs to the field of test chamber technology, and specifically relates to an explosion-proof test chamber with mechanical self-locking pressure relief function. Background Technology

[0002] As power battery technology continues to advance towards higher energy density, the energy of materials within the batteries is increasing, but their stability still needs to be verified. Therefore, high-energy batteries require high and low temperature charging and discharging verification during the research and development phase, during which battery explosions are common. Therefore, to ensure the safety of personnel and equipment, it is necessary to improve existing high and low temperature test chambers, increasing their explosion-proof capabilities and raising the level of testing safety.

[0003] However, while existing explosion-proof test chambers have a pressure relief function when the product under test inside the chamber explodes, most of them use electric control to open the pressure relief cover to relieve pressure, and cannot achieve autonomous pressure relief function through mechanical self-locking structure alone. Utility Model Content

[0004] The purpose of this invention is to provide an explosion-proof test chamber with a mechanical self-locking pressure relief function. Through the design of the mechanical locking assembly, the pressure relief plate can achieve autonomous pressure relief without the need for electric control, thus improving the reliability of pressure relief.

[0005] To solve the above-mentioned technical problems, this utility model provides an explosion-proof test chamber with a mechanical self-locking pressure relief function, comprising:

[0006] The pressure relief port is located at the top of the test chamber and is sealed and fastened to the pressure relief plate;

[0007] A hinge assembly, wherein the pressure relief plate is rotatably connected to the top of the test chamber via the hinge assembly;

[0008] A mechanical locking assembly is provided, wherein the pressure relief plate is locked to the top of the test chamber via the mechanical locking assembly; comprising: a fixed base, pins, torsion springs, roller grooves, pressure rollers, and a locking tongue; the fixed base is mounted on the pressure relief plate, and two pins are inserted at intervals on the fixed base. The torsion springs are sleeved on the pins, one end of the torsion springs abuts against the pressure rollers, and the other end of the torsion springs abuts against the inner cavity of the fixed base. The shaft end of the pressure rollers is slidably inserted into the roller grooves, which are formed on the fixed base. The locking tongue is mounted on the top of the test chamber and engages with and locks against two symmetrically distributed pressure rollers.

[0009] Preferably, the pressure relief port is rectangular in shape, and the pressure relief plate inside the pressure relief port is trapezoidal in shape.

[0010] Preferably, a rubber sealing gasket is further provided between the pressure relief plate and the pressure relief port.

[0011] Preferably, the hinge assembly includes: a hinge base, a rotating shaft, and hinge ears; two hinge ears are symmetrically provided at one end of the pressure relief plate, and the two ends of each hinge ear are rotatably connected to the hinge base through the rotating shaft, and the hinge base is disposed on the top of the test chamber.

[0012] Preferably, the hinge ear is configured as a U-shaped plate structure.

[0013] Preferably, the pressure roller includes: a wheel portion, a connecting shaft, a clamp, and an annular groove; the connecting shaft is movably connected to the axial direction of the wheel portion, the connecting shaft is slidably connected to the groove, and the other end of the connecting shaft is locked by the clamp so that it abuts against the fixed seat; the annular groove is provided on the circumferential wall of the wheel portion so that one end of the torsion spring abuts against the annular groove.

[0014] Preferably, the locking tongue includes an inverted T-shaped seat and a diamond-shaped portion; the upper end of the inverted T-shaped seat is integrally formed and smoothly connected to the diamond-shaped portion, through which the pressure roller can be engaged and pressed tightly.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] When an explosion occurs, the excessive air pressure inside the test chamber will exert an upward force on the pressure relief plate. This force will push the pressure rollers to overcome the spring force of the torsion spring, causing the two pressure rollers on both sides to move away from each other under the guidance of the roller groove. At this time, the two pressure rollers on both sides will separate from the locking tongue, so that the pressure relief plate can be opened quickly to relieve pressure. This achieves autonomous pressure relief through a mechanical self-locking structure, which improves the reliability of pressure relief. Attached Figure Description

[0017] Figure 1 This utility model relates to the structure of an explosion-proof test chamber with a mechanical self-locking pressure relief function. Figure 1 .

[0018] Figure 2 This is a cross-sectional view of the pressure relief port and pressure relief plate in this utility model.

[0019] Figure 3 This is a structural diagram of the hinge assembly in this utility model.

[0020] Figure 4 This is a front view of the mechanical locking assembly in this utility model.

[0021] Figure 5 This is a rear view of the mechanical locking assembly in this utility model.

[0022] Figure 6 This is a bottom view of the mechanical locking assembly in this utility model.

[0023] Figure 7 This is a structural diagram of the mechanical locking assembly for removing the fixed seat in this utility model.

[0024] In the diagram: 1-Test chamber, 2-Pressure relief port, 3-Pressure relief plate, 4-Hinge assembly, 41-Hinge seat, 42-Rotating shaft, 43-Hinge ear, 5-Mechanical locking assembly, 51-Fixed seat, 52-Pin, 53-Torsion spring, 54-Roll groove, 55-Pressure roller, 551-Wheel section, 552-Plug-in shaft, 553-Clamp, 554-Annular groove, 56-Lock tongue, 561-Inverted T-shaped seat, 562-Rhombus section. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0026] like Figures 1-7 As shown, this utility model embodiment provides an explosion-proof test chamber with a mechanical self-locking pressure relief function, comprising:

[0027] Pressure relief port 2 is located at the top of test chamber 1 and is sealed and fastened to pressure relief plate 3; when the product to be tested explodes inside test chamber 1, pressure can be released in time through pressure relief port 2.

[0028] The pressure relief plate 3 is rotatably connected to the top of the test chamber 1 via the hinge assembly 4, enabling it to flip open and close.

[0029] The mechanical locking assembly 5 locks the pressure relief plate 3 to the top of the test chamber 1. It includes: a fixed base 51, pins 52, torsion springs 53, roller grooves 54, pressure rollers 55, and locking tongues 56. The fixed base 51 is installed on the pressure relief plate 3. Two pins 52 are inserted at intervals on the fixed base 51. Torsion springs 53 are sleeved on the pins 52. One end of the torsion spring 53 abuts against the pressure roller 55, and the other end of the torsion spring 53 abuts against the inner cavity of the fixed base 51. The shaft end of the pressure roller 55 is slidably inserted into the roller groove 54. The roller groove 54 is opened on the fixed base 51. The locking tongues 56 are installed on the top of the test chamber 1 and are locked with the two symmetrically distributed pressure rollers 55. When an explosion occurs, the excessive air pressure inside the test chamber 1 will exert an upward force on the pressure relief plate 3. At this time, this force will push the pressure roller 55 to overcome the spring force of the torsion spring 53, causing the two pressure rollers 55 on both sides to move away from each other under the guidance of the roller groove 54. At this time, the two pressure rollers 55 on both sides will separate from the locking tongue 56, so that the pressure relief plate 3 can be opened quickly to relieve pressure.

[0030] The pressure relief port 2 is rectangular in shape, and the pressure relief plate 3 inside the pressure relief port 2 is trapezoidal in shape.

[0031] A rubber sealing gasket is also provided between the pressure relief plate 3 and the pressure relief port 2 to ensure the sealing performance between the pressure relief plate 3 and the pressure relief port 2 when they are fastened together.

[0032] The hinge assembly 4 includes a hinge base 41, a rotating shaft 42, and hinge ears 43. Two hinge ears 43 are symmetrically provided at one end of the pressure relief plate 3. Both ends of each hinge ear 43 are rotatably connected to the hinge base 41 via the rotating shaft 42. The hinge base 41 is located on the top of the test chamber 1. Through the arrangement of the hinge assembly 4, the pressure relief plate 3 can be flipped open and closed around the rotating shaft 42.

[0033] The hinge ear 43 is designed with a U-shaped plate structure.

[0034] The pressure roller 55 includes a wheel portion 551, a connecting shaft 552, a clamp 553, and an annular groove 554. The connecting shaft 552 is movably inserted into the axial direction of the wheel portion 551. The connecting shaft 552 is slidably inserted into the groove 54, and the other end of the connecting shaft 552 is locked by the clamp 553, so that it abuts against the fixed seat 51. An annular groove 554 is provided on the circumferential wall of the wheel portion 551, so that one end of the torsion spring 53 abuts against the annular groove 554. The annular groove 554 enhances the reliability of the abutment and limiting between the torsion spring 53 and the pressure roller 55.

[0035] The locking tongue 56 includes an inverted T-shaped seat 561 and a rhomboid portion 562. The upper end of the inverted T-shaped seat 561 is integrally formed and smoothly connected to the rhomboid portion 562, which can engage and press the pressure roller 55. The lower wedge-shaped surface of the rhomboid portion 562 structure can achieve the engagement and pressing of the pressure roller 55, and at the same time, the lower wedge-shaped surface can push the pressure roller 55 to overcome the elastic force of the torsion spring 53 to move when depressurization is performed. Moreover, during self-locking, the upper wedge-shaped surface of the rhomboid portion 562 structure guides and quickly engages and locks with the pressure roller 55.

[0036] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An explosion-proof test chamber with a mechanical self-locking pressure relief function, characterized in that, include: The pressure relief port (2) is located on the top of the test chamber (1) and is sealed and fastened to the pressure relief plate (3); The pressure relief plate (3) is rotatably connected to the top of the test chamber (1) via the hinge assembly (4); A mechanical locking assembly (5) is provided, wherein the pressure relief plate (3) is locked to the top of the test chamber (1) via the mechanical locking assembly (5); comprising: a fixed base (51), pins (52), a torsion spring (53), a roller groove (54), a pressure roller (55), and a locking tongue (56); the fixed base (51) is mounted on the pressure relief plate (3), and two pins (52) are inserted at intervals on the fixed base (51), and a certain amount of material is sleeved on the pins (52). The torsion spring (53) has one end abutting against the pressure roller (55) and the other end abutting against the inner cavity of the fixed seat (51). The shaft end of the pressure roller (55) is slidably inserted into the groove (54), which is opened on the fixed seat (51). The locking tongue (56) is installed on the top of the test chamber (1) and engages with and locks against the two symmetrically distributed pressure rollers (55).

2. The explosion-proof test chamber with mechanical self-locking pressure relief function as described in claim 1, characterized in that, The pressure relief port (2) is rectangular in shape, and the pressure relief plate (3) located inside the pressure relief port (2) is trapezoidal in shape.

3. The explosion-proof test chamber with mechanical self-locking pressure relief function as described in claim 1, characterized in that, A rubber sealing gasket is also provided between the pressure relief plate (3) and the pressure relief port (2).

4. The explosion-proof test chamber with mechanical self-locking pressure relief function as described in claim 1, characterized in that, The hinge assembly (4) includes: a hinge seat (41), a rotating shaft (42), and a hinge ear (43); two hinge ears (43) are symmetrically provided at one end of the pressure relief plate (3), and the two ends of each hinge ear (43) are rotatably connected to the hinge seat (41) through the rotating shaft (42), and the hinge seat (41) is located on the top of the test chamber (1).

5. The explosion-proof test chamber with mechanical self-locking pressure relief function as described in claim 4, characterized in that, The hinge ear (43) is configured in the form of a U-shaped plate.

6. The explosion-proof test chamber with mechanical self-locking pressure relief function as described in claim 1, characterized in that, The pressure roller (55) includes: a wheel part (551), a plug shaft (552), a clamp (553), and an annular groove (554); the plug shaft (552) is movably plugged into the axial direction of the wheel part (551), the plug shaft (552) is slidably plugged into the groove (54), and the other end of the plug shaft (552) is locked by the clamp (553) so that it abuts against the fixed seat (51). The annular groove (554) is provided on the circumferential wall of the wheel part (551) so that one end of the torsion spring (53) abuts against the annular groove (554).

7. The explosion-proof test chamber with mechanical self-locking pressure relief function as described in claim 1, characterized in that, The locking tongue (56) includes an inverted T-shaped seat (561) and a rhombus-shaped part (562); the upper end of the inverted T-shaped seat (561) is integrally formed and smoothly connected to the rhombus-shaped part (562), and the pressure roller (55) can be locked and pressed through the rhombus-shaped part (562).

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