A high and low temperature explosion-proof test chamber

Abstract

The utility model relates to the technical field of high and low temperature tests, and in particular to a high and low temperature explosion-proof test box, the box body comprising a first box body, a high temperature test chamber is arranged inside the first box body, a first pressure relief cylinder is fixed on the top of the high temperature test chamber and extends outside the first box body, a first air inlet is provided at the bottom of the first pressure relief cylinder and penetrates to the top of the first pressure relief cylinder, the first air inlet at the top of the first pressure relief cylinder is used to guide the installation of a second pressure relief cylinder, the interior of the second pressure relief cylinder is hollow, and a circular card is arranged at the bottom of the second pressure relief cylinder. The utility model can perform high and low temperature explosion-proof tests on test products, realize automatic pressure relief effect and automatic wiping effect of condensed cold air during the test, avoid the occurrence rate of test product explosion, and improve the safety of high and low temperature tests.

Description

Technical Field

[0001] The utility model relates to the technical field of high and low temperature tests, in particular to a high and low temperature explosion-proof test box. Background Art

[0002] High and low temperature explosion-proof test chamber is a kind of equipment specially used to test the performance and reliability of products under extreme temperature conditions. It is usually used in aerospace, automobile, electronics and power industries to ensure that products can operate safely and reliably under high temperature, low temperature and temperature change environments. It is usually made of special materials and can operate safely in explosive hazardous environments to ensure that no explosion accidents will occur during the test. The existing high and low temperature explosion-proof test chamber is usually a two-chamber type, divided into high and low temperature test chambers. High temperature simulation usually heats the high temperature test chamber through heating elements, so that the internal temperature continues to rise, but in this process, high temperature and high pressure gas will be generated. If the pressure is not relieved, the box will continue to rupture under high pressure, reducing the safety factor of high temperature test; for low temperature test, cold air is usually introduced to test the test product at low temperature, but the continuous introduction of cold air will cause frost and fog effect on the observation glass, which is easy to cause the observation glass to be blocked and blurred, which is not conducive to the test personnel to observe the situation inside the test chamber in real time, so that the test process cannot be controlled, thereby increasing the possibility of explosion of the test product and the incidence of test explosion accidents. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a high and low temperature explosion-proof test box.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides a high and low temperature explosion-proof test box, which comprises a box body:

[0006] The box body includes a first box body, a high temperature test chamber is arranged inside the first box body, a first pressure relief cylinder is fixed on the top of the high temperature test chamber and extends outside the first box body, a first air inlet hole is opened at the bottom of the first pressure relief cylinder and penetrates to the top of the first pressure relief cylinder, the first air inlet hole at the top of the first pressure relief cylinder is used to guide the installation of the second pressure relief cylinder, the interior of the second pressure relief cylinder is hollow, and a circular clamping plate is arranged at the bottom of the second pressure relief cylinder;

[0007] A second box body is arranged below the first box body, a low-temperature test chamber is arranged inside the second box body, a first guide plate is installed at the front end of the low-temperature test chamber, a guide rod is fixed on the first guide plate, a guide block is connected to the guide rod, the guide block is welded to one end of the driving cross plate, a ball screw nut is welded to the other end of the driving cross plate, the ball screw nut is installed on the ball screw, the ball screw is installed on the second guide plate, the second guide plate is fixed at the front end of the low-temperature test chamber and is parallel to the first guide plate.

[0008] Furthermore, in a preferred embodiment of the utility model, one end of a return spring is fixed above the circular clamping plate, the other end of the return spring is fixed to the top of the first pressure relief cylinder, and the return spring is sleeved on the outer periphery of the second pressure relief cylinder.

[0009] Furthermore, in a preferred embodiment of the utility model, a plurality of vertical exhaust holes are provided on the second pressure relief cylinder, and a second air inlet hole is provided at the bottom of the second pressure relief cylinder.

[0010] Furthermore, in a preferred embodiment of the utility model, a first ventilation net is provided on both sides of the high temperature test chamber, and heating copper tubes are installed on the first ventilation net and both sides of the high temperature test chamber, and the heating copper tubes are connected to a power source.

[0011] Furthermore, in a preferred embodiment of the utility model, a high-temperature door is installed at the front end of the first box body through a hinge, and a first explosion-proof glass is provided on the high-temperature door.

[0012] Furthermore, in a preferred embodiment of the present invention, one end of the ball screw is connected to a stepper motor, and the stepper motor is fixed to the side of the second box body.

[0013] Furthermore, in a preferred embodiment of the utility model, a water-absorbing sponge is provided at the bottom of the driving transverse plate, and the water-absorbing sponge is in contact with the second explosion-proof glass.

[0014] Furthermore, in a preferred embodiment of the utility model, the second explosion-proof glass is installed on a low-temperature cabin door, and the low-temperature cabin door is installed on the front end of the second box body through a hinge.

[0015] Furthermore, in a preferred embodiment of the utility model, a refrigeration device is installed on the back of the second box body, and the refrigeration end of the refrigeration device extends into the low-temperature test chamber, and second ventilation nets are arranged on both sides of the low-temperature test chamber.

[0016] Furthermore, in a preferred embodiment of the present invention, a universal pulley is installed at the bottom of the second box.

[0017] The utility model solves the defects existing in the background technology. The beneficial technical effect of the utility model is that the utility model can fully automatically and quickly relieve the pressure of the high-temperature and high-pressure gas generated in the cabin during the high-temperature test of the test product, and automatically control the pressure relief amount according to the size of the applied high pressure, so as to quickly and efficiently release the high-pressure gas in the high-temperature test cabin, avoid bursting in the cabin due to continuous high pressure, and at the same time protect the test product itself and the quality of the high-temperature test, and improve the safety of the high-temperature test; at the same time, the utility model can quickly and automatically wipe off the frost and fog generated on the explosion-proof glass by cold air in the low-temperature test, and absorb moisture, so as to always keep the cleanliness of the explosion-proof glass, and ensure that the test personnel can always observe the test conditions and status of the test product in the low-temperature test cabin through the explosion-proof glass, so as to realize manual control of the test progress and prevent the test product from exploding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 It is a partial structural schematic diagram of the utility model;

[0022] Figure 4 This is a schematic diagram of the back structure of the utility model;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of AA.

[0024] In the figure:

[0025] 1. Box; 2. First box; 3. High-temperature test chamber; 4. First pressure relief cylinder; 5. Air inlet; 6. Second pressure relief cylinder; 7. Round card plate; 8. Reset spring; 9. Exhaust hole; 10. First ventilation net; 11. Heating copper tube; 12. High-temperature cabin door; 13. First explosion-proof glass; 14. Second box; 15. Low-temperature test chamber; 16. First guide plate; 17. Guide rod; 18. Guide block; 19. Driving cross plate; 20. Ball screw nut; 21. Ball screw; 22. Second guide plate; 23. Stepper motor; 24. Water-absorbing sponge; 25. Second explosion-proof glass; 26. Low-temperature cabin door; 27. Refrigeration device; 28. Second ventilation net; 29. ​​Universal pulley; 30. Second air inlet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the utility model, the reference to "embodiment", "one embodiment", "some embodiments", or "other embodiments" indicates that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least some embodiments, but not necessarily all embodiments. Multiple occurrences of "embodiment", "one embodiment", or "some embodiments" do not necessarily all refer to the same embodiment. If the specification describes that a component, feature, structure or characteristic "may", "perhaps" or "can" be included, the specific component, feature, structure or characteristic is not necessarily included. If the specification or claim mentions "one" element, it does not mean that there is only one element. If the specification or claim mentions "another" element, it does not exclude the presence of more than one other element. In addition, specific features, structures, functions or characteristics can be combined in one or more embodiments in any suitable manner. For example, the first embodiment can be combined with the second embodiment, as long as the specific features, structures, functions or characteristics associated with the two embodiments are not mutually exclusive.

[0028] In the description of the present invention, unless otherwise specified, the use of ordinal adjectives such as "first", "second", and "third" to describe a common object only refers to different instances of the same object, and does not imply that the objects described in this way must adopt a given order, whether in time, space, order, or any other manner. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] Example

[0031] like Figure 1-5As shown, the present application provides a high and low temperature explosion-proof test box, which includes a box body 1.

[0032] The box body 1 includes a first box body 2, a high temperature test chamber 3 is arranged inside the first box body 2, a first pressure relief cylinder 4 is fixed on the top of the high temperature test chamber 3 and extends outside the first box body 2, a first air inlet hole 5 is opened at the bottom of the first pressure relief cylinder 4 and penetrates to the top of the first pressure relief cylinder 4, the first air inlet hole 5 at the top of the first pressure relief cylinder 4 is used to guide the installation of a second pressure relief cylinder 6, the interior of the second pressure relief cylinder 6 is hollow, and a circular clamping plate 7 is arranged at the bottom of the second pressure relief cylinder 6;

[0033] A second box body 14 is arranged below the first box body 2, and a low-temperature test chamber 15 is arranged inside the second box body 14. A first guide plate 16 is installed at the front end of the low-temperature test chamber 15, and a guide rod 17 is fixed on the first guide plate 16. A guide block 18 is connected to the guide rod 17. The guide block 18 is welded to one end of a driving cross plate 19, and a ball screw nut 20 is welded to the other end of the driving cross plate 19. The ball screw nut 20 is installed on a ball screw 21, and the ball screw 21 is installed on a second guide plate 22. The second guide plate 22 is fixed at the front end of the low-temperature test chamber 15 and is parallel to the first guide plate 16.

[0034] Furthermore, in a preferred embodiment of the utility model, one end of a return spring 8 is fixed above the circular clamping plate 7, the other end of the return spring 8 is fixed to the top of the first pressure relief cylinder 4, and the return spring 8 is sleeved on the outer periphery of the second pressure relief cylinder 6.

[0035] Furthermore, in a preferred embodiment of the present invention, a plurality of vertical exhaust holes 9 are provided on the second pressure relief cylinder 6 , and a second air inlet hole 30 is provided at the bottom of the second pressure relief cylinder 6 .

[0036] Furthermore, in a preferred embodiment of the utility model, a first ventilation net 10 is provided on both sides of the high temperature test chamber 3, and heating copper tubes 11 are installed on both sides of the first ventilation net 10 and the high temperature test chamber 3, and the heating copper tubes 11 are connected to a power source.

[0037] Furthermore, in a preferred embodiment of the present invention, a high-temperature door 12 is installed at the front end of the first box body 2 through a hinge, and a first explosion-proof glass 13 is provided on the high-temperature door 12 .

[0038] One end of the ball screw 21 is connected to a stepper motor 23 , and the stepper motor 23 is fixed to a side surface of the second box body 14 .

[0039] Furthermore, in a preferred embodiment of the present invention, a water-absorbing sponge 24 is provided at the bottom of the driving transverse plate 19 , and the water-absorbing sponge 24 is in contact with the second explosion-proof glass 25 .

[0040] Furthermore, in a preferred embodiment of the present invention, the second explosion-proof glass 25 is installed on a low-temperature door 26, and the low-temperature door 26 is installed on the front end of the second box body 14 through a hinge.

[0041] Furthermore, in a preferred embodiment of the utility model, a refrigeration device 27 is installed on the back of the second box body 14, and the refrigeration end of the refrigeration device 27 extends into the low-temperature test chamber 15. Second ventilation nets 28 are arranged on both sides of the low-temperature test chamber 15.

[0042] Furthermore, in a preferred embodiment of the present invention, a universal pulley 29 is installed at the bottom of the second box body 14 .

[0043] It should be noted that when the utility model is in use, first open the high-temperature cabin door 12 and place the test product in the high-temperature test cabin 3. After placing it, close the high-temperature cabin door 12 and then turn on the power so that the heating copper tube 11 is energized to continuously heat and generate high-temperature heat. At this time, the high-temperature heat flows into the high-temperature test cabin 3 through the mesh holes of the first ventilation net 10, thereby realizing continuous heating of the test product by the high-temperature heat. After a period of continuous heating, high-temperature and high-pressure gas will be generated in the high-temperature test cabin 3, causing the air pressure in the high-temperature test cabin 3 to continue to rise synchronously. At this time, the rising high-temperature and high-pressure gas will enter the first pressure relief cylinder 4 and the second pressure relief cylinder 6 synchronously through the first air inlet 5 and the second air inlet 30. When the high-temperature and high-pressure gas rises to a certain pressure value, the high-temperature and high-pressure gas will enter the first pressure relief cylinder 4 and the second pressure relief cylinder 6. The gas will push up the second pressure relief cylinder 6 in the first pressure relief cylinder 4, so that the second pressure relief cylinder 6 extends upward out of the first pressure relief cylinder 4. At the same time, the circular clamping plate 7 compresses the reset spring 8, and the reset spring 8 applies a reset elastic force to the second pressure relief cylinder 6. At this time, the exhaust hole 9 on the second pressure relief cylinder 6 discharges the corresponding high-temperature and high-pressure gas according to the rising pressure, thereby realizing the automatic and rapid pressure relief effect of the high-temperature and high-pressure gas during the high-pressure test, improving the safety of the test product during high-temperature testing, avoiding explosion accidents caused by excessive pressure in the cabin, and improving the explosion-proof performance; when the high-temperature and high-pressure gas is depressurized, the upward air pressure will automatically disappear, so the reset spring 5 drives the second pressure relief cylinder 6 to rebound and reset, so that the second pressure relief cylinder 6 is initialized in preparation for the next automatic pressure relief of the high-pressure gas.

[0044] It should be noted that after the high temperature test is completed, a low temperature test is required immediately. The low temperature door 26 is opened, the test product is placed in the low temperature test chamber 15, and the refrigeration device 27 is started. The refrigeration end of the refrigeration device 27 inputs cold air into the box body 1. The cold air enters the low temperature test chamber 15 through the second ventilation net 28 to perform a continuous low temperature test on the test product. During the low temperature test, the test personnel can observe the state of the test product through the second explosion-proof glass 25. However, after a period of time, the second explosion-proof glass 25 will produce frost and fog due to the cold air. At this time, the stepper motor 23 is started, and the stepper motor 23 drives the ball screw 21 to rotate, thereby driving the ball screw The rod nut 20 translates on the ball screw 21, and the ball screw nut 20 drives the driving cross plate 19 to translate synchronously, so that the driving cross plate 19 can drive the water-absorbing sponge 24 to wipe off the frost and fog on the second explosion-proof glass 25 and absorb moisture during the translation process, so as to achieve an automated test glass cleaning effect, and can always maintain the high clarity of the glass during the low-temperature test, ensuring that the test personnel can clearly observe the test conditions and status inside the low-temperature test chamber in real time. If the test product undergoes a dangerous change, the test can be stopped manually immediately to prevent the test product from exploding, achieve an explosion-proof effect, and improve the safety of the test. When the driving cross plate 19 translates, the guide block 18 will guide and slide on the guide rod 17, which can ensure the translation stability of the driving cross plate 19, effectively improve the cleaning strength and performance of the water-absorbing sponge 24 on the second explosion-proof glass 25, and have high reliability.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A high and low temperature explosion-proof test box, comprising a box body, characterized in that: The box body includes a first box body, a high temperature test chamber is arranged inside the first box body, a first pressure relief cylinder is fixed on the top of the high temperature test chamber and extends outside the first box body, a first air inlet hole is opened at the bottom of the first pressure relief cylinder and penetrates to the top of the first pressure relief cylinder, the first air inlet hole at the top of the first pressure relief cylinder is used to guide the installation of the second pressure relief cylinder, the interior of the second pressure relief cylinder is hollow, and a circular clamping plate is arranged at the bottom of the second pressure relief cylinder; A second box body is arranged below the first box body, a low-temperature test chamber is arranged inside the second box body, a first guide plate is installed at the front end of the low-temperature test chamber, a guide rod is fixed on the first guide plate, a guide block is connected to the guide rod, the guide block is welded to one end of the driving cross plate, a ball screw nut is welded to the other end of the driving cross plate, the ball screw nut is installed on the ball screw, the ball screw is installed on the second guide plate, the second guide plate is fixed at the front end of the low-temperature test chamber and is parallel to the first guide plate.

2. A high and low temperature explosion-proof test chamber according to claim 1, characterized in that: One end of a return spring is fixed above the circular clamping plate, the other end of the return spring is fixed to the top of the first pressure relief cylinder, and the return spring is sleeved on the outer periphery of the second pressure relief cylinder.

3. A high and low temperature explosion-proof test chamber according to claim 1, characterized in that: The second pressure relief cylinder is provided with a plurality of vertical exhaust holes, and the bottom of the second pressure relief cylinder is provided with a second air inlet hole.

4. A high and low temperature explosion-proof test chamber according to claim 1, characterized in that: A first ventilation net is arranged on both sides of the high temperature test chamber, and heating copper tubes are installed on the first ventilation net and both sides of the high temperature test chamber, and the heating copper tubes are connected to a power source.

5. The high and low temperature explosion-proof test chamber according to claim 1, characterized in that: A high-temperature door is installed at the front end of the first box body through a hinge, and the high-temperature door is provided with a first explosion-proof glass.

6. A high and low temperature explosion-proof test chamber according to claim 1, characterized in that: One end of the ball screw is connected to a stepper motor, and the stepper motor is fixed to the side surface of the second box body.

7. The high and low temperature explosion-proof test chamber according to claim 1, characterized in that: A water-absorbing sponge is arranged at the bottom of the driving transverse plate, and the water-absorbing sponge is in contact with the second explosion-proof glass.

8. A high and low temperature explosion-proof test chamber according to claim 7, characterized in that: The second explosion-proof glass is installed on the low-temperature cabin door, and the low-temperature cabin door is installed on the front end of the second box body through a hinge.

9. The high and low temperature explosion-proof test chamber according to claim 1, characterized in that: A refrigeration device is installed at the back of the second box body, and a refrigeration end of the refrigeration device extends into the low-temperature test chamber. Second ventilation nets are arranged on both sides of the low-temperature test chamber.

10. The high and low temperature explosion-proof test chamber according to claim 1, characterized in that: A universal pulley is installed at the bottom of the second box.

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