Safety valve detection device

Abstract

The utility model relates to the technical field of valve detection equipment, and discloses a safety valve detection device, which is characterized in that a first-stage seal is formed between a mounting plate and a shell, a second-stage seal is formed between a sealing plate and the shell, and the two-stage seal is combined, so that the sealing grade can be improved; on the basis that the first elastic sealing piece is fixed between the mounting plate and the shell, a first shaping sealing piece is formed through the poured sealant for reinforced sealing, and on the basis that the second elastic sealing piece is fixed between the sealing plate and the shell, a second shaping sealing piece is formed through the poured sealant for reinforced sealing. And the sealing effect is improved again, so that the sealing grade is improved. Due to the sufficient sealing level, flammable and explosive gas in the working environment can be prevented from entering the cavity, so that the flammable and explosive gas is prevented from burning and exploding in the cavity, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection equipment, in particular to a safety valve detection device. Background Art

[0002] Safety valve detection devices are used to detect the opening pressure of safety valves. Existing safety valve detection devices include a display assembly consisting of a display screen and a mounting plate extending horizontally along the edge of the display screen. The sidewalls of the mounting plate form a simple seal with the inner wall of the housing via a sealing ring. This sealing method achieves a sufficient level of sealing to prevent dust and water from entering the safety valve detection device, but it cannot prevent gas from entering the safety valve detection device. In actual use, the operating environment of the safety valve detection device may contain flammable and explosive gases, such as hydrogen, hydrogen sulfide, butane, acetylene, and liquefied petroleum gas. Once these gases enter the safety valve detection device, they can cause combustion or even explosion due to friction or static electricity on the circuit board, resulting in safety accidents. Utility Model Content

[0003] The purpose of the utility model is to overcome the problem of insufficient sealing level in the prior art and inability to prevent flammable and explosive gases, and to provide a safety valve detection device, which has the function of preventing flammable and explosive gases from entering the interior of the chamber.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a safety valve detection device on the one hand, comprising: a shell, the top of the shell is open, and a mounting hole is formed on the side wall; a display screen assembly, the display screen assembly closes the opening, the display screen assembly includes a mounting plate and a sealing plate sealed and connected to the opening, a first elastic seal and a first shaped seal formed by solidifying the injected liquid sealant are fixed between the mounting plate and the shell, a second elastic seal and a second shaped seal formed by solidifying the injected liquid sealant are fixed between the sealing plate and the shell, and the sealing plate is located above the mounting plate; and an explosion-proof joint, the explosion-proof joint is sealingly connected to the mounting hole and closes the mounting hole, and the explosion-proof joint, the shell and the display screen assembly form a closed chamber.

[0005] Preferably, the side wall surface and at least a part of the bottom surface of the mounting plate are sealed to the housing; and / or the outer peripheral wall of the sealing plate is sealed to the inner peripheral wall of the housing.

[0006] Preferably, the housing includes a shell and a mounting platform that protrudes horizontally along the inner side wall of the shell, the top surface of the mounting platform is lower than the top surface of the shell, the bottom edge of the mounting plate is sealed to the top surface of the mounting platform, and the side wall of the mounting plate is sealed to the inner wall of the shell.

[0007] Preferably, the mounting plate includes a horizontally arranged connecting plate and an extension plate extending vertically upward along the edge of the connecting plate. The bottom edge of the connecting plate is sealed to the top surface of the mounting platform, and the side wall of the connecting plate and the side wall of the extension plate facing away from the connecting plate are both sealed to the inner wall of the shell located above the mounting platform.

[0008] Preferably, the mounting platform is provided along the entire inner circumferential wall of the housing; and / or the mounting plate is sealed and pressed against the mounting platform by means of a threaded connection.

[0009] Preferably, the housing further comprises a mounting post arranged in the shell, the mounting plate is threadedly connected to the mounting post, the top surface of the mounting post is flush with the top surface of the mounting platform, and the bottom surface of the mounting plate is sealed to the top surface of the mounting post.

[0010] Preferably, a first screw hole is provided on the mounting column, a second screw hole is provided on the edge of the mounting plate, the mounting column and the mounting plate are connected by a screw member that is threadedly connected to the first screw hole and the second screw hole, a plurality of mounting columns are arranged at intervals along the inner circumference of the mounting platform, and the second screw holes are arranged at intervals along the circumference of the mounting plate so as to correspond one to one to the plurality of mounting columns.

[0011] Preferably, the mounting posts are arranged on the side walls of the mounting platform so that the pressing force generated by the threaded connection of the screw members can act on the edge of the mounting plate.

[0012] Preferably, a third elastic sealing member and a third shaped sealing member formed by solidification of the injected liquid sealant are fixed between both the first screw hole and the second screw hole and the threaded member.

[0013] Preferably, the shell is made of aluminum alloy, and the wall surface of the shell is wrapped with an anti-conductive film.

[0014] Through the above technical solution, a primary seal is formed between the mounting plate and the housing, and a secondary seal is formed between the sealing plate and the housing. The combination of the two-stage seal can improve the sealing level. In addition, on the basis of fixing the first elastic seal between the mounting plate and the housing, a first shaped seal is formed by injecting sealant to strengthen the sealing. Similarly, on the basis of fixing the second elastic seal between the sealing plate and the housing, a second shaped seal is formed by injecting sealant to strengthen the sealing, further increasing the sealing effect to improve the sealing level. In addition, the explosion-proof joint blocks the mounting hole and cooperates with the housing and display screen assembly to form a closed chamber, isolating the components inside the chamber from the outside world. A sufficient sealing level can prevent flammable and explosive gases in the working environment from entering the chamber, thereby preventing the flammable and explosive gases from burning and exploding in the chamber, and thus avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the safety valve detection device of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion of the safety valve detection device;

[0017] Figure 3 is a longitudinal cross-sectional view of the housing and display screen assembly of the safety valve detection device;

[0018] Figure 4 yes Figure 3 A partial enlarged view of middle A;

[0019] Figure 5 It is a structural diagram of the display screen assembly of the safety valve detection device;

[0020] Figure 6 It is a structural diagram of the mounting plate of the display assembly;

[0021] Figure 7 It is a structural diagram of the sealing plate;

[0022] Figure 8 It is a structural diagram of the housing of the safety valve detection device;

[0023] Figure 9 It is a structural diagram of the housing and cover assembly of the safety valve detection device;

[0024] Figure 10 is a schematic diagram of the structure of the cover; and

[0025] Figure 11 yes Figure 10 A partial enlarged view of B.

[0026] Description of Reference Numerals

[0027] 10. Casing; 11. Mounting hole; 12. Shell; 13. Mounting platform; 14. Mounting column; 141. First screw hole; 15. Bottom plate; 20. Display screen assembly; 21. Mounting plate; 211. Connecting plate; 212. Extension plate; 213. Second screw hole; 22. Sealing plate; 221. Display port; 23. Touch screen; 30. Cover assembly; 31. Upper cover; 32. Hinge fixing seat; 33. Fixed support member; 34. Rotating support member; 36. Turning rod; 37. Positioning bar; 40. Fixing frame; 50. Battery; 60. Fixing plate; 70. Circuit board; 80. Components. DETAILED DESCRIPTION

[0028] In the present invention, unless otherwise specified, directional terms such as "upper" and "lower" generally refer to the upper and lower directions shown in the drawings. "Inside" and "outside" refer to the inside and outside of the outline of the corresponding component.

[0029] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0030] It should be noted that the shell in this application is made of metal material with explosion-proof function. Based on the process requirements and production costs of technical materials, the shell and display assembly cannot be made into an integrated structure and can only be made separately and assembled. Therefore, there will inevitably be sealing problems.

[0031] See also Figure 1 and Figure 11 As shown, the utility model provides a safety valve detection device, comprising: a shell 10, the top of the shell 10 is open, and a mounting hole 11 is formed on the side wall; a display screen assembly 20, the display screen assembly 20 closes the opening, and the display screen assembly 20 includes a mounting plate 21 and a sealing plate 22 sealed and connected to the opening, a first elastic seal and a first shaped seal formed by solidifying the injected liquid sealant are fixed between the mounting plate 21 and the shell 10, a second elastic seal and a second shaped seal formed by solidifying the injected liquid sealant are fixed between the sealing plate 22 and the shell 10, and the sealing plate 22 is located above the mounting plate 21; and an explosion-proof joint, the explosion-proof joint is sealingly connected to the mounting hole 11 and closes the mounting hole 11, and the explosion-proof joint, the shell 10 and the display screen assembly 20 form a closed chamber.

[0032] In this embodiment, a primary sealing connection is formed between the mounting plate 21 and the housing 10, and the primary sealing connection is formed by a first elastic seal and a first shaped seal, wherein the first shaped seal can fill the gap between the mounting plate 21 and the housing 10 based on its own fluidity before solidification, thereby enhancing the primary sealing performance and improving the sealing level; a secondary seal is formed between the sealing plate 22 and the housing 10 above the mounting plate 21, and the secondary seal is formed by a second elastic seal and a second shaped seal, and similarly, the second shaped seal can fill the gap between the mounting plate 21 and the housing 10 based on its own fluidity before solidification, thereby enhancing the sealing performance and improving the sealing level of the secondary seal. In addition, the combination of the primary seal and the secondary seal enhances the sealing performance of the display screen assembly 20 and the housing 10, and improves the sealing level. The secondary seal between the sealing plate 22 and the housing 10 can prevent flammable and explosive gases from entering the area between the sealing plate 22 and the mounting plate 21. The primary seal between the mounting plate 21 and the housing 10 can prevent flammable and explosive gases from entering the chamber. The two-stage seal can isolate the chamber from the external environment to the greatest extent, prevent flammable and explosive gases in the working environment from entering the chamber, thereby preventing flammable and explosive gases from burning and exploding in the chamber, and thus avoiding the occurrence of safety accidents.

[0033] Specifically, the first and second elastic seals can be sealing rings, and the liquid sealant used for the first and second shaped seals can be 704 glue. The sealing plate 22 is fixedly connected to the housing 10 by bonding. The explosion-proof connector is a self-locking structure with a nut. The sealing method can be to insert the sealing ring onto the explosion-proof connector. When the nut is tightened, the sealing ring undergoes elastic deformation to achieve a sealing effect. When the explosion-proof connector is a USB connector, the liquid sealant can be solidified to seal it. The explosion-proof connector is used to connect cables for data transmission and is made of aluminum alloy.

[0034] Specifically, the display assembly 20 also includes a touch display 23, which is a rounded rectangle or a rounded square. The mounting plate 21 extends horizontally along the edge of the touch display 23 to form a rounded square frame-type plate. The sealing plate 22 is also a rounded square frame-type plate, and a display port 221 is formed in the center to expose the touch display 23 for easy observation and operation by the operator. The inner edge of the sealing plate 22 covers and is sealed to part of the touch display 23 without affecting the touch display 23, thereby increasing the sealing performance between the sealing plate 22 and the touch display 23.

[0035] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, the side wall surface and at least a portion of the bottom surface of the mounting plate 21 are sealed to the housing 10 .

[0036] Through the above arrangement, the contact area between the mounting plate 21 and the housing 10 is increased, thereby increasing the sealing area between the two, thereby increasing the sealing performance and improving the sealing level.

[0037] Specifically, the entire circumferential wall of the mounting plate 21 is sealed with the housing 10 to achieve full circumferential sealing.

[0038] See also Figure 1 and Figure 11 As shown, the outer peripheral wall of the sealing plate 22 is sealed against the inner peripheral wall of the housing 10 .

[0039] Through the above arrangement, full circumferential sealing between the sealing plate 22 and the housing 10 can be achieved, thereby improving the sealing performance.

[0040] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, the housing 10 includes a shell 12 and a mounting platform 13 that protrudes horizontally along the inner side wall of the shell 12, the top surface of the mounting platform 13 is lower than the top surface of the shell 12, the bottom edge of the mounting plate 21 is sealed to the top surface of the mounting platform 13, and the side wall of the mounting plate 21 is sealed to the inner wall of the shell 12.

[0041] In this embodiment, the mounting platform 13 provides a connection position for the bottom edge of the mounting plate 21, and the inner wall surface of the shell 12 above the mounting platform 13 provides a connection position for the side wall surface of the mounting plate 21, so that the bottom edge and side wall surface of the mounting plate 21 can be sealed with the outer shell 10, thereby increasing the connection area between the mounting plate 21 and the outer shell 10, thereby improving the sealing performance.

[0042] Specifically, the housing 12 and the mounting platform 13 are integrally formed, and there is no connection between the two, so there is no sealing problem.

[0043] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, the mounting plate 21 includes a horizontally arranged connecting plate 211 and an extension plate 212 extending vertically upward along the edge of the connecting plate 211, the bottom edge of the connecting plate 211 is sealed to the top surface of the mounting platform 13, and the side wall of the connecting plate 211 and the side wall of the extension plate 212 facing away from the connecting plate 211 are both sealed to the inner wall of the shell 12 located above the mounting platform 13.

[0044] In this embodiment, connecting plate 211 is used for a sealed connection with mounting platform 13. The bottom surface of connecting plate 211 and the top surface of mounting platform 13 are both horizontal surfaces, allowing them to fit snugly, increasing the connection area and thus improving sealing performance. Extension plate 212 is used for a sealed connection with housing 12 located above mounting platform 13. The side surface of extension plate 212 fits snugly with the inner wall surface of housing 12 located above mounting platform 13, allowing them to fit snugly, increasing the connection area and thus improving sealing performance.

[0045] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, the mounting platform 13 is provided along the entire inner circumference of the housing 12 .

[0046] Through the above arrangement, the entire periphery of the bottom surface of the connecting plate 211 can be sealed with the mounting platform 13, thereby increasing the sealing area.

[0047] See also Figure 1 and Figure 11 As shown, the mounting plate 21 is sealed and pressed against the mounting platform 13 by means of threaded connection.

[0048] Through the above-mentioned setting, during the threaded connection process, the first elastic seal can be pressed between the mounting plate 21 and the mounting platform 13 to achieve a sealed connection between the mounting plate 21 and the mounting platform 13. The threaded connection method can gradually increase the pressing force to prevent the first elastic seal from being damaged by a sudden and significant increase in the pressing force.

[0049] See also Figure 1 and Figure 11As shown, in some embodiments of the present invention, the housing 10 also includes a mounting post 14 disposed in the shell 12, the mounting plate 21 is threadedly connected to the mounting post 14, the top surface of the mounting post 14 is flush with the top surface of the mounting platform 13, and the bottom surface of the mounting plate 21 is sealed to the top surface of the mounting post 14.

[0050] In this embodiment, the mounting post 14 is used to be threadedly connected to the mounting plate 21 , thereby increasing the contact area between the mounting plate 21 and the housing 10 , thereby improving the sealing performance and the stability of the mounting plate 21 .

[0051] In other embodiments, the housing 10 does not include the mounting post 14 , and the mounting plate 21 is threadedly connected to the mounting platform 13 .

[0052] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, a first screw hole 141 is provided on the mounting column 14, and a second screw hole 213 is provided on the edge of the mounting plate 21. The mounting column 14 is connected to the mounting plate 21 by a screw member that is threadedly connected to the first screw hole 141 and the second screw hole 213. The mounting columns 14 are arranged to be multiple along the inner circumference of the mounting platform 13, and the second screw holes 213 are arranged to be multiple along the circumferential interval of the mounting plate 21, corresponding to each other one by one.

[0053] In this embodiment, each threaded member applies a clamping force to the mounting plate 21, increasing the clamping force applied by the mounting plate 21 to the first elastic seal, thereby increasing the sealing performance, while reducing the gap between the mounting plate 21 and the mounting platform 13, and improving the sealing level.

[0054] Specifically, the second screw hole 213 is a stepped hole, the threaded member may be a screw or a bolt, and the upper surface of the threaded member is embedded in the second screw hole 213 or flush with the top surface of the mounting plate 21 .

[0055] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, the mounting posts 14 are disposed on the side walls of the mounting platform 13 so that the compression force generated by the threaded connection of the screws can act on the edge of the mounting plate 21 .

[0056] In this embodiment, the setting position of the mounting column 14 can enable the clamping force applied by the screw member to directly act on the edge of the mounting plate 21, and then be transmitted to the first elastic seal through the edge of the mounting plate 21, thereby reducing the distance over which the clamping force is transmitted, allowing the first elastic seal to withstand a large clamping force and improving the sealing performance.

[0057] Specifically, the mounting column 14 and the mounting platform 13 are integrally formed, and there is no connection between the two, so there is no sealing problem.

[0058] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, a third elastic sealing member and a third shaped sealing member formed by solidifying the injected liquid sealant are fixed between the first screw hole 141 and the second screw hole 213 and the threaded member.

[0059] Through the above arrangement, a seal is formed between the threaded member and the first screw hole 141 and the second screw hole 213, which can prevent gas from passing through the gap between the threaded member and the first screw hole 141 and the second screw hole 213 and entering the chamber, thereby ensuring the airtightness of the chamber.

[0060] Specifically, the third elastic sealing member may be a sealing ring, and the liquid sealant used in the third shaped sealing member may be 704 glue.

[0061] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, the housing 10 is made of aluminum alloy, and the wall surface of the housing 10 is wrapped with an anti-conductive film.

[0062] Through the above-mentioned setting, the melting point of the aluminum alloy material is low. When the friction of flammable and explosive gases generates heat, the aluminum alloy material will be softened or melted instead of generating sparks, so that the aluminum alloy material can have an explosion-proof function to match the sealing level of the safety valve detection device to meet the explosion-proof requirements. In addition, the anti-conductive film can prevent static electricity in the chamber from being transmitted to the external environment and igniting flammable and explosive gases, and can also prevent static electricity in the external environment from being transmitted to the chamber and affecting the devices inside the chamber.

[0063] Specifically, the anti-conductive film is a dense oxide film formed on the wall surface of the housing 10 through an anodic oxidation process. The oxide film has a large electrical resistance to achieve the anti-conductive function.

[0064] See also Figure 1 and Figure 11 As shown, in some embodiments of the present invention, the shell 12 is a square cylindrical structure with open top and bottom. The outer shell 10 also includes a bottom plate 15 that is sealed to the bottom of the shell 12 and closes the open bottom of the shell 12. The safety valve detection device also includes a fixing frame 40, a battery 50, a fixing plate 60, a circuit board 70 and components 80 arranged in the chamber. The fixing frame 40 is fixed on the inner side wall of the shell 12 and forms an installation cavity with the inner side wall of the shell 12. The battery 50 is fixed in the installation cavity. The fixing plate 60 is fixed on the top surface of the bottom plate 15. The circuit board 70 and the components 80 are fixed on the fixing plate 60. The battery 50 supplies power to the circuit board 70, the components 80 and the touch display screen 23.

[0065] Specifically, the top opening of the housing 12 corresponds to the top opening of the outer shell 10, and the bottom plate 15 fits within the lower opening of the housing 12. The fixing bracket 40 is a U-shaped bracket, with its opening facing the inner sidewall of the housing 12. A first screw hole 141 is defined at the top of the mounting post 14, and a third screw hole is defined at the bottom of the mounting post 14. A plurality of fourth screw holes corresponding to the third screw holes are defined along the circumferential edge of the fixing plate 60. The fixing plate 60 and the mounting post 14 are sealed and threadedly connected by screws. The fourth screw holes are stepped holes, and the bottom surface of the screws is embedded in the fourth screw holes or is flush with the bottom surface of the fixing plate 60. The base plate 15 has a fifth screw hole at each of its four corners. These fifth screw holes are connected to the third screw holes of the four mounting posts 14 located at the four corners of the housing interior via screws. These four screws pass through the fifth screw hole of the base plate 15, the fourth screw hole of the fixing plate 60, and the third screw holes of the mounting posts 14, respectively. This sealed threaded connection is achieved by sealing rings and liquid sealant between the screws and the screw holes. Component 80 may also be another type of circuit board.

[0066] To facilitate the connection between the fixing plate 60 and the mounting column 14, the base plate 15 and the shell 12 are set as a split structure. Of course, the base plate 15 and the shell 12 can also be set as an integrated structure, and the fixing plate 60 is fixed to the top surface of the base plate 15 by other connection methods (such as bonding); in addition, the outer shell 10 is made of aluminum alloy material. Based on the process requirements and production costs of technical materials, the shell 12 and the base plate 15 cannot be made into an integrated structure and can only be assembled after being made separately. Of course, if the process requirements and production costs are not considered, the shell 12 and the base plate 15 can also be set as an integrated structure.

[0067] Specifically, heat dissipation holes arranged in a matrix can be provided on the fixing plate 60 and the fixing frame 40 to promote heat dissipation of the circuit board 70 , components 80 and the battery 50 .

[0068] In other embodiments, the housing 10 may further be provided with a button conductively connected to the circuit board 70 and the component 80 , and the button is an explosion-proof button.

[0069] See also Figure 1 and Figure 11As shown, in some embodiments of the present invention, the safety valve detection device also includes a cover assembly 30, the cover assembly 30 includes an upper cover 31, a hinge fixing seat 32, a fixed support member 33, a rotating rod 36 and a rotating support member 34, the hinge fixing seat 32 is fixed on the outer wall of the shell 12, the upper cover 31 is rotatably connected to the hinge fixing seat 32 through the fixed support member 33, the rotating rod 36 and the rotating support member 34, the hinge fixing seat 32 is provided with a mounting groove on the side facing the shell 12, the fixed support member 33 is located in the mounting groove and is fixedly connected to the hinge fixing seat 32, the end of the rotating rod 36 is located in the mounting groove and is rotatably connected to the fixed support member 33, and the rotating support member 34 is located outside the mounting groove and is fixedly connected to the rotating rod 36.

[0070] Specifically, the hinge mount 32, fixed support 33, rotating rod 36, and rotating support 34 form a damping hinge with a torque of 0.3 N / m. This, combined with the weight of the upper cover 31, enables the upper cover 31 to stop at any rotation angle, allowing the operator to rotate the upper cover 31 with one hand with minimal effort. Furthermore, when the safety valve detection device is used in a brightly lit environment, the upper cover 31 can provide light shielding, facilitating the operator's observation and operation of the touchscreen display 23. The hinge mount 32 is used to protect the rotating rod 36 and rotating support 34. The vertical length of the hinge mount 32 is the same as the vertical length of the housing 12, allowing the bottom surface of the hinge mount 32 to be flush with the bottom surfaces of the housing 12 and the bottom surface of the base plate 15, forming a support leg and providing support. The hinge fixing seat 32 is threadedly connected to the shell 12 on one side facing the shell 12, so that there are no screws on the outside of the hinge fixing seat 32, which is aesthetically pleasing and can realize the anti-dismantling function, and assist the entire safety valve detection device to achieve dustproof, waterproof, electromagnetic shielding and explosion-proof.

[0071] Specifically, the cover assembly 30 also includes a positioning strip 37 arranged on the edge of the upper cover 31 and extending perpendicular to the upper cover 31. When the upper cover 31 is placed on the top of the shell 12, the positioning strip 37 is located at the outer edge of the shell 12 to achieve the positioning of the upper cover 31.

[0072] In other embodiments, the hinge fixing seat 42, the fixed support member 33, the rotating rod 36, and the rotating support member 34 can be replaced by hinges.

[0073] It should be noted that a sufficient sealing level can meet the explosion-proof requirements. The safety valve detection device of this application has an explosion-proof function. Even if the chamber explodes, it will not ignite the outside. It has passed the explosion-proof test and obtained an explosion-proof certificate.

[0074] While the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple variations and combinations should also be considered as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A safety valve detection device, characterized in that: include: A housing (10), wherein the top of the housing (10) is open and a mounting hole (11) is formed on the side wall; A display screen assembly (20), the display screen assembly (20) closes the opening, the display screen assembly (20) comprises a mounting plate (21) and a sealing plate (22) sealed to the opening, a first elastic sealing member and a first shaped sealing member formed by solidifying a poured liquid sealant are fixed between the mounting plate (21) and the housing (10), a second elastic sealing member and a second shaped sealing member formed by solidifying a poured liquid sealant are fixed between the sealing plate (22) and the housing (10), and the sealing plate (22) is located above the mounting plate (21); and An explosion-proof joint is sealed and connected to the mounting hole (11) and closes the mounting hole (11); the explosion-proof joint, the housing (10) and the display screen assembly (20) form a sealed chamber.

2. The safety valve detection device according to claim 1, characterized in that: The side wall surface and at least a portion of the bottom surface of the mounting plate (21) are sealed to the housing (10); and / or, The outer peripheral wall of the sealing plate (22) is sealed against the inner peripheral wall of the housing (10).

3. The safety valve detection device according to claim 2, characterized in that: The housing (10) comprises a shell (12) and a mounting platform (13) protruding horizontally and extending along the inner side wall of the shell (12); the top surface of the mounting platform (13) is lower than the top surface of the shell (12); the bottom edge of the mounting plate (21) is sealed to the top surface of the mounting platform (13); and the side wall of the mounting plate (21) is sealed to the inner wall of the shell (12).

4. The safety valve detection device according to claim 3, characterized in that: The mounting plate (21) comprises a horizontally arranged connecting plate (211) and an extension plate (212) extending vertically upward along the edge of the connecting plate (211); the bottom edge of the connecting plate (211) is sealed against the top surface of the mounting platform (13); the side wall of the connecting plate (211) and the side wall of the extension plate (212) facing away from the connecting plate (211) are both sealed against the inner wall of the housing (12) located above the mounting platform (13).

5. The safety valve detection device according to claim 3, characterized in that: The mounting platform (13) is arranged along the entire inner circumference of the housing (12); and / or, The mounting plate (21) is sealed and pressed against the mounting platform (13) by means of a threaded connection.

6. The safety valve detection device according to claim 3, characterized in that: The housing (10) further comprises a mounting post (14) disposed within the shell (12); the mounting plate (21) is threadedly connected to the mounting post (14); the top surface of the mounting post (14) is flush with the top surface of the mounting platform (13); and the bottom surface of the mounting plate (21) is sealingly attached to the top surface of the mounting post (14).

7. The safety valve detection device according to claim 6, characterized in that: A first screw hole (141) is provided on the mounting column (14), and a second screw hole (213) is provided on the edge of the mounting plate (21). The mounting column (14) is connected to the mounting plate (21) via a screw member that is threadedly connected to the first screw hole (141) and the second screw hole (213). The mounting columns (14) are arranged at intervals along the inner circumference of the mounting platform (13), and the second screw holes (213) are arranged at intervals along the circumference of the mounting plate (21) to correspond to the plurality of mounting columns (14).

8. The safety valve detection device according to claim 7, characterized in that: The mounting column (14) is arranged on the side wall of the mounting platform (13) so that the pressing force generated by the threaded connection of the screw member can act on the edge of the mounting plate (21).

9. The safety valve detection device according to claim 7, characterized in that: A third elastic sealing member and a third shaped sealing member formed by solidification of injected liquid sealant are fixed between the first screw hole (141) and the second screw hole (213) and the threaded member.

10. The safety valve detection device according to any one of claims 1 to 9, characterized in that: The shell (10) is made of aluminum alloy material, and the wall surface of the shell (10) is wrapped with an anti-conductive film.

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