Explosion-proof inspection device for chemical safety management

Abstract

The utility model relates to an explosion-proof inspection device for chemical safety management, which comprises a wrapping part, a cylinder, a piston and a first alarm, the wrapping part is fixedly arranged at the joint of a chemical pipeline, a sealed cavity for accommodating the joint is formed in the wrapping part, the inner end of the cylinder is fixedly arranged on the wrapping part, and the piston is arranged in the sealed cavity. An inner cavity of the cylinder is communicated with the sealing cavity, the piston is arranged in the cylinder and matched with the inner cavity of the cylinder, and the first alarm is used for switching on a power source and giving an alarm after the piston moves outwards by a certain distance. Due to the adoption of the technical scheme, the explosion-proof inspection device for chemical safety management can inspect the joint position of a chemical pipeline in real time, and can prompt a safety management worker after chemical gas leakage occurs at the joint position of the chemical pipeline, so that the safety of the chemical pipeline is ensured. The possibility of explosion caused by leaked chemical gas can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof inspection equipment for chemical safety management, in particular to an explosion-proof inspection device for chemical safety management. Background Art

[0002] During the production process of a chemical plant, chemical pipelines are needed to transport chemical gases. Chemical pipelines are often made up of multiple pipes. Since the joints where the pipes in a chemical pipeline are spliced ​​are often relatively weak, after long-term use, the joints of the chemical pipelines are prone to poor sealing. In the process of transporting chemical gases through chemical pipelines, the chemical gases in the chemical pipelines are prone to leak from the joints of the chemical pipelines. The leaked chemical gas will form an explosive mixed gas after mixing with air. Once it comes into contact with a fire source, it may explode. Therefore, it is urgent to develop an explosion-proof inspection device for chemical safety management that can be used to perform real-time inspections of the joints of chemical pipelines and alert safety management personnel when chemical gas leaks occur at the joints of chemical pipelines. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide an explosion-proof inspection for chemical safety management to solve the technical problem in the prior art that chemical gases in chemical pipelines are easily leaked from the joints of chemical pipelines, and the leaked chemical gas will form explosive gas after mixing with air, which may explode once it comes into contact with a fire source.

[0004] The utility model is achieved through the following technical solutions:

[0005] An explosion-proof inspection device for chemical safety management includes a wrapping part, a cylinder, a piston and a first alarm. The wrapping part is fixedly arranged at the joint position of a chemical pipeline. A sealed cavity for accommodating the joint is formed in the wrapping part. The inner end of the cylinder is fixedly arranged on the wrapping part. The inner cavity of the cylinder is connected to the sealed cavity. The piston is arranged in the cylinder and cooperates with the inner cavity of the cylinder. The first alarm is used to connect the power supply and sound an alarm after the piston moves outward a certain distance.

[0006] Furthermore, it also includes a connecting frame, a fixed plate, a first metal sheet and a second metal sheet, the connecting frame is fixedly connected to the piston, the fixed plate is fixedly arranged on one side of the cylinder and is arranged parallel to the cylinder, the first metal sheet is fixed on the connecting frame, the first metal sheet presses against the side of the fixed plate facing the cylinder, the second metal sheet is arranged on the fixed plate and is located on the outside of the first metal sheet, the second metal sheet is embedded in the fixed plate, the side of the second metal sheet facing the cylinder is flush with the side of the fixed plate facing the cylinder, and the first alarm is used to turn on the power and sound an alarm when the first metal sheet contacts the second metal sheet.

[0007] Furthermore, the first alarm is a warning light.

[0008] Furthermore, it also includes a third metal sheet, a fourth metal sheet and a second alarm, the third metal sheet is fixed on the connecting frame and is located on the outside of the second metal sheet, the third metal sheet is against the side of the fixed plate facing the cylinder, the fourth metal sheet is provided on the fixed plate and is located on the outside of the third metal sheet, the fourth metal sheet is embedded in the fixed plate, the side of the fourth metal sheet facing the cylinder is flush with the side of the fixed plate facing the cylinder, and the second alarm is used to turn on the power and sound an alarm when the third metal sheet contacts the fourth metal sheet.

[0009] Furthermore, the second alarm is a buzzer.

[0010] Furthermore, the distance from the outer end of the first metal sheet to the inner end of the second metal sheet is smaller than the distance from the outer end of the third metal sheet to the inner end of the fourth metal sheet, and the distance from the inner end of the first metal sheet to the outer end of the second metal sheet is greater than the distance from the outer end of the third metal sheet to the inner end of the fourth metal sheet.

[0011] Furthermore, the axis of the cylinder is arranged in the horizontal direction, and a circular hole is formed on the cylinder wall of the cylinder, and the diameter of the circular hole is smaller than the thickness of the piston; it also includes a connecting tube and an air cylinder, one end of the connecting tube is fixedly connected to the outer surface of the cylinder, the inner cavity of the connecting tube is opposite to the circular hole, and the other end of the connecting tube is fixedly connected to the air cylinder, and the inner cavity of the connecting tube is connected to the inner cavity of the air cylinder; the distance from the inner edge of the circular hole to the inner end face of the piston is greater than the distance from the outer end of the third metal sheet to the inner end of the fourth metal sheet; the distance from the inner edge of the circular hole to the inner end face of the piston is smaller than the distance from the inner end of the first metal sheet to the outer end of the second metal sheet, and the distance from the inner edge of the circular hole to the inner end face of the piston is also smaller than the distance from the inner end of the third metal sheet to the outer end of the fourth metal sheet.

[0012] Furthermore, the wrapping part includes a first wrapping block and a second wrapping block, the first wrapping block and the second wrapping block are respectively arranged on both sides of the chemical pipeline joint, the first wrapping block and the second wrapping block are detachably fixedly connected, the side of the first wrapping block facing the second wrapping block is recessed to form a first accommodating groove and two first semicircular grooves, the two first semicircular grooves are respectively arranged on two opposite sides of the first accommodating groove, the side of the second wrapping block facing the first wrapping block is recessed to form a second accommodating groove and two second semicircular grooves, the two second semicircular grooves are respectively arranged on both sides of the second accommodating groove and are one-to-one opposite to the two first semicircular grooves, the first accommodating groove and the second accommodating groove are combined to form the sealed cavity, and the first semicircular groove and the second semicircular groove are combined to form a accommodating hole that matches the chemical pipeline.

[0013] Furthermore, the first packaging block includes a first packaging block body and a first sealing gasket provided on a side of the first packaging block body facing the second packaging block, the side of the first packaging block facing the second packaging block is recessed to form a first groove and two second grooves, the two second grooves are respectively provided on both sides of the first groove, a first through hole is formed on the first sealing gasket at a position corresponding to the notch of the first groove and matched with the notch of the first groove, a portion of the first sealing gasket at a position corresponding to the second groove is bent toward the second groove and fits against the groove wall of the second groove, a portion of the first sealing gasket corresponding to the second groove is in a semicircular ring shape, and the first through hole and the first groove constitute the first accommodating groove;

[0014] The second packaging block includes a second packaging block body and a second sealing gasket provided on a side of the second packaging block body facing the first packaging block, the side of the second packaging block body facing the first packaging block is recessed to form a third groove and two fourth grooves, the two fourth grooves are respectively provided on both sides of the third groove and are opposite to the two second grooves one by one, a second through hole is formed on the second sealing gasket at a position corresponding to the notch of the third groove and matched with the notch of the third groove, the part of the second sealing gasket at the position corresponding to the fourth groove is bent toward the fourth groove and fits with the groove wall of the fourth groove, the part of the second sealing gasket corresponding to the fourth groove is in a semicircular ring shape, the second through hole and the third groove constitute the second accommodating groove, the part of the first sealing gasket corresponding to the two grooves and the part of the second sealing gasket corresponding to the fourth groove constitute a circular ring whose annular hole matches the chemical pipeline.

[0015] Furthermore, the first wrapping block and the second wrapping block are arranged in the up-down direction, and two through holes are formed on the first wrapping block, both of which are arranged vertically. The two through holes are respectively located on both sides of the chemical pipeline, and the upper ends of the through holes pass through the upper surface of the first wrapping block, and the lower ends extend downward and pass through the lower surface of the second wrapping block; screws are provided in the two through holes, and the upper ends of the screws are screwed with a first nut, and the lower ends of the screws are screwed with a second nut, the first nut is located on the upper side of the first wrapping block, and the second nut is located on the lower side of the second wrapping block.

[0016] The beneficial effects of the utility model are:

[0017] The explosion-proof inspection device for chemical safety management described in the utility model can perform real-time inspection of the joint position of the chemical pipeline, and can alert safety management personnel when chemical gas leakage occurs at the joint position of the chemical pipeline, thereby reducing the possibility of explosion caused by leaked chemical gas.

[0018] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the utility model explosion-proof inspection device for chemical safety management when viewed from one perspective;

[0020] Figure 2 This is a cross-sectional view of the utility model explosion-proof inspection device for chemical safety management;

[0021] Figure 3 This is a schematic diagram of the circuit connection of the first alarm in the explosion-proof inspection device for chemical safety management of the utility model;

[0022] Figure 4 This is a schematic diagram of the circuit connection of the second alarm in the explosion-proof inspection device for chemical safety management of the utility model;

[0023] Figure 5 This is a schematic diagram of the combined structure of the first wrapping block body and the first sealing gasket in the explosion-proof inspection device for chemical safety management of the present utility model;

[0024] Figure 6 This is a schematic diagram of the combined structure of the second wrapping block body and the second sealing gasket in the explosion-proof inspection device for chemical safety management of the present utility model.

[0025] In the figure: first package block body 1; second package block body 2; cylinder 3; piston 4; connecting rod 5; first connecting plate 6; second connecting plate 7; first metal sheet 8; second metal sheet 9; fixing plate 10; connecting column 11; third metal sheet 12; fourth metal sheet 13; first alarm 14; second alarm 15; first sealing gasket 16; second sealing gasket 17; screw 18; first nut 19; second nut 20; pipe joint 21; connecting pipe 22; air cylinder 23; first power supply 24; second power supply 25. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the above description of the present invention, it should be noted that the terms "one side" and "the other side" and the like indicate positions or locations based on the positions or locations shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0030] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0031] See also Figure 1-6The present invention provides a technical solution: an explosion-proof inspection device for chemical safety management, comprising a wrapping portion, a cylinder 3, a piston 4, and a first alarm 14. The wrapping portion is fixedly mounted at the joint position of a chemical pipeline, and a sealed cavity for accommodating the joint is formed inside the wrapping portion. The inner end of the cylinder 3 is fixedly mounted on the wrapping portion. Here, "inside" refers to the direction close to the wrapping portion, and in the subsequent description, "inside" has this meaning. Conversely, "outside" refers to the direction away from the wrapping portion, and in the subsequent description, "outside" has this meaning. The inner cavity of the cylinder 3 is connected to the sealed cavity, and the piston 4 is disposed in the cylinder 3 and cooperates with the inner cavity of the cylinder 3. The first alarm 14 is used to connect the power supply and sound an alarm after the piston 4 moves outward a certain distance.

[0032] When the explosion-proof inspection device for chemical safety management described in the utility model is in an initial state, the wrapping part is fixed at the joint position of the chemical pipeline, the joint of the chemical pipeline is located in the sealed cavity, the piston 4 is located in the cylinder 3, and the first alarm is in a state of not issuing an alarm.

[0033] When chemical gas leakage occurs at the chemical pipeline joint 21, the leaked chemical gas will leak into the sealed cavity. As the amount of chemical gas leaking into the sealed cavity gradually increases, the gas pressure in the sealed cavity will gradually increase. After the gas pressure in the sealed cavity increases to a certain level, the piston 4 will move outward in the cylinder 3 under the push of the gas pressure. After the piston 4 moves outward a certain distance, the first alarm 14 is powered on and sounds an alarm.

[0034] The utility model explosion-proof inspection device for chemical safety management can perform real-time inspection on the position of chemical pipeline joint 21, and can remind safety management personnel when chemical gas leaks at the joint position of the chemical pipeline, thereby reducing the possibility of explosion caused by leaked chemical gas.

[0035] In this embodiment, the inner end of the cylinder 3 is closed and the outer end is open. A connecting hole is formed on the sidewall of the cylinder 3. One end of the connecting hole communicates with the inner cavity of the cylinder 3, and the other end of the connecting hole extends toward and communicates with the sealed cavity. The piston is located on the side of the connecting hole facing away from the closed end of the cylinder 3. With this structure, the inner cavity of the cylinder 3 can communicate with the sealed cavity.

[0036] In this embodiment: the explosion-proof inspection device for chemical safety management described in the utility model also includes a connecting frame, a fixing plate 10, a first metal sheet 8 and a second metal sheet 9. The connecting frame is fixedly connected to the piston 4, the fixing plate 10 is fixedly arranged on one side of the cylinder 3 and is arranged parallel to the cylinder 3. Specifically, the fixing plate 10 is located on one side of the cylinder 3, and the fixing plate 10 is fixedly connected to the cylinder 3 through a connecting column 11. The first metal sheet 8 is fixed on the connecting frame, the first metal sheet 8 resists the side of the fixing plate 10 facing the cylinder 3, the second metal sheet 9 is provided on the fixing plate 10 and is located on the outside of the first metal sheet 8, the second metal sheet 9 is embedded in the fixing plate 10, and the side of the second metal sheet 9 facing the cylinder 3 is flush with the side of the fixing plate 10 facing the cylinder 3. The first alarm 14 is used to turn on the power and sound an alarm when the first metal sheet 8 contacts the second metal sheet 9.

[0037] When the piston 4 moves outward within the cylinder 3, the piston 4 drives the connecting frame outward, which in turn drives the first metal sheet 8 to slide outward. After the piston 4 drives the connecting frame outward a certain distance, the first metal sheet 8 on the connecting frame comes into contact with the second metal sheet 9 on the fixing plate 10. At this point, the first alarm 14 is powered on and sounds an alarm. With this structure, the first alarm 14 can be powered on and sound an alarm after the piston 4 moves outward a certain distance.

[0038] In this embodiment, the negative electrode of the first alarm is electrically connected to the negative electrode of the first power source 24, the first metal sheet 8 is electrically connected to the positive electrode of the first power source 24, and the second metal sheet 9 is electrically connected to the positive electrode of the first alarm 14. When the first metal sheet 8 and the second metal sheet 9 are in contact, the first alarm 14 can sound an alarm.

[0039] In this embodiment: the connecting frame includes a connecting rod 5, a first connecting plate 6 and a second connecting plate 7, the inner end of the connecting rod 5 is fixedly connected to the outer end of the piston 4, the outer end of the connecting rod 5 extends out of the outer end of the cylinder 3, the end of the first connecting plate 6 facing away from the fixed plate 10 is fixedly connected to the outer end of the connecting rod 5, the second connecting plate 7 is fixedly connected to the end of the first connecting plate 6 facing the fixed plate 10, and the first metal sheet 8 is fixedly arranged on the side of the second connecting plate 7 facing the fixed plate 10.

[0040] In this embodiment, the first alarm 14 is a warning light.

[0041] The warning light can be a single-layer three-color equipment warning light of model M4D. When the warning light is powered on, the warning light can emit a warning light. The emitted warning light can serve to remind safety management personnel without generating noise.

[0042] In this embodiment: the explosion-proof inspection device for chemical safety management described in the utility model further includes a third metal sheet 12, a fourth metal sheet 13 and a second alarm 15. The third metal sheet 12 is fixed to the connecting frame and is located outside the second metal sheet 9. Specifically, the third metal sheet 12 is fixed to the side of the second connecting plate 7 facing the fixed plate 10. The third metal sheet 12 abuts against the side of the fixed plate 10 facing the cylinder 3. The fourth metal sheet 13 is provided on the fixed plate 10 and is located outside the third metal sheet 12. The fourth metal sheet 13 is embedded in the fixed plate 10. The side of the fourth metal sheet 13 facing the cylinder 3 is flush with the side of the fixed plate 10 facing the cylinder 3. The second alarm 15 is used to connect the power supply and sound an alarm when the third metal sheet 12 contacts the fourth metal sheet 13.

[0043] When the piston 4 moves outward in the cylinder 3, the piston 4 drives the connecting frame to move outward, and the connecting frame can drive the third metal sheet 12 to slide outward. After the piston 4 drives the connecting frame to move outward a certain distance, the third metal sheet 12 on the connecting frame can contact the fourth metal sheet 13 on the fixed plate 10. At this time, the second alarm 15 is powered on and sounds an alarm. If the first alarm 14 is damaged and cannot sound an alarm, the second alarm 15 will also sound an alarm after the piston 4 drives the connecting frame to move outward a certain distance, which can reduce the possibility that the explosion-proof inspection device for chemical safety management described in the utility model cannot sound an alarm. After a chemical gas leak occurs at the chemical pipeline joint 21, it can reduce the possibility that the explosion-proof inspection device for chemical safety management described in the utility model cannot alert the safety management staff.

[0044] In this embodiment, the negative electrode of the second alarm is electrically connected to the negative electrode of the second power source 25, the third metal sheet 12 is electrically connected to the positive electrode of the second power source 25, and the fourth metal sheet 13 is electrically connected to the positive electrode of the second alarm 15. When the third metal sheet 12 and the fourth metal sheet 13 come into contact, the second alarm 15 can sound an alarm.

[0045] In this embodiment, the second alarm 15 is a buzzer.

[0046] The buzzer can be an active high-decibel buzzer of model SHD4216. When the buzzer is powered on, the buzzer can make a sound. The sound made by the buzzer can serve as a reminder for the security management staff. By reminding the security management staff through the sound, the security management staff can receive the alarm prompt more easily.

[0047] In this embodiment: the distance from the outer end of the first metal sheet 8 to the inner end of the second metal sheet 9 is smaller than the distance from the outer end of the third metal sheet 12 to the inner end of the fourth metal sheet 13, and the distance from the inner end of the first metal sheet 8 to the outer end of the second metal sheet 9 is greater than the distance from the outer end of the third metal sheet 12 to the inner end of the fourth metal sheet 13.

[0048] The initial positions of the first metal sheet 8, the second metal sheet 9, the third metal sheet 12, and the fourth metal sheet 13 are such that the first metal sheet 8 is on the inner side of the second metal sheet 9, the third metal sheet 12 is on the outer side of the second metal sheet 9, and the fourth metal sheet 13 is on the outer side of the third metal sheet 12, in a staggered manner. As gas leaks into the sealed cavity, the pressure within the sealed cavity gradually increases. Once the gas pressure within the sealed cavity reaches a certain level, the piston 4 moves outward within the cylinder 3 under the pressure of the gas. After the piston 4 moves outward a certain distance, the first metal sheet 8 contacts the second metal sheet 9, at which point the first alarm 14 is powered on and an alarm sounds. After the piston 4 continues to move outward a certain distance, the third metal sheet 12 contacts the fourth metal sheet 13, at which point the second alarm 15 is powered on and an alarm sounds. This is because the distance from the inner end of the first metal sheet 8 to the outer end of the second metal sheet 9 is greater than the distance from the outer end of the third metal sheet 12 to the inner end of the fourth metal sheet 13. When the second alarm 15 is powered on and sounds an alarm, the first metal sheet 8 can maintain contact with the second metal sheet 9, and the first alarm 14 still continues to sound an alarm, that is, the first alarm and the second alarm can sound an alarm at the same time.

[0049] After the first alarm 14 sounds the alarm, if the first alarm 14 does not attract the attention of the security management staff, the second alarm 15 and the first alarm 14 can sound the alarm together after a certain period of time, which can better serve as a reminder and be more easily discovered by the security management staff.

[0050] In this embodiment: the axis of the cylinder 3 is arranged in the horizontal direction, and a circular hole is formed on the cylinder wall of the cylinder 3, the diameter of the circular hole is smaller than the thickness of the piston 4; it also includes a connecting pipe 22 and an air storage cylinder 23, one end of the connecting pipe 22 is fixedly connected to the outer surface of the cylinder 3, the inner cavity of the connecting pipe 22 faces the circular hole, and the other end of the connecting pipe 22 is fixedly connected to the air storage cylinder 23, and the inner cavity of the connecting pipe 22 is connected to the inner cavity of the air storage cylinder 23; the distance from the inner edge of the circular hole to the inner end surface of the piston 4 is greater than the distance from the outer end of the third metal sheet 12 to the inner end of the fourth metal sheet 13; the distance from the inner edge of the circular hole to the inner end surface of the piston 4 is smaller than the distance from the inner end of the first metal sheet 8 to the outer end of the second metal sheet 9, and the distance from the inner edge of the circular hole to the inner end surface of the piston 4 is also smaller than the distance from the inner end of the third metal sheet 12 to the outer end of the fourth metal sheet 13.

[0051] Since the distance between the inner edge of the circular hole and the inner end surface of the piston 4 is greater than the distance between the outer end of the third metal sheet 12 and the inner end of the fourth metal sheet 13, after the piston 4 has moved outward a certain distance and the second alarm 15 has just sounded the alarm, the circular hole cannot communicate with the portion of the inner cavity of the cylinder 3 located on the inner side of the piston 4, and the gas in the sealed cavity cannot be discharged into the gas reservoir 23, thereby failing to relieve the gas pressure in the sealed cavity.

[0052] After the piston 4 continues to move outward for a certain distance, the circular hole is connected to the part of the inner cavity of the cylinder 3 located inside the piston 4. At this time, the gas in the sealed cavity can enter the gas storage cylinder 23 in sequence through the part of the inner cavity of the cylinder 3 located inside the piston 4, the circular hole and the connecting pipe 22. With this structure, the pressure in the sealed cavity can be relieved.

[0053] Because the distance from the inner edge of the circular hole to the inner end surface of the piston 4 is smaller than the distance from the inner end of the first metal sheet 8 to the outer end of the second metal sheet 9, and the distance from the inner edge of the circular hole to the inner end surface of the piston 4 is also smaller than the distance from the inner end of the third metal sheet 12 to the outer end of the fourth metal sheet 13, when the sealed cavity is depressurized, the first metal sheet 8 and the second metal sheet 9 can be in contact with each other, the first alarm 14 is in an alarm state, the third metal sheet 12 and the fourth metal sheet 13 can be in contact, and the second alarm 15 is in an alarm state.

[0054] Within a period of time after the sealed cavity is depressurized, that is, before the gas pressure in the cavity composed of the sealed cavity, the part of the inner cavity of the cylinder 3 located inside the piston 4, the inner cavity of the circular hole, the inner cavity of the connecting pipe 22 and the inner cavity of the gas cylinder 23 reaches a pressure sufficient to push the piston 4 outward, the piston 4 cannot move outward, the first metal sheet 8 cannot move outward and separate from the second metal sheet 9, the third metal sheet 12 cannot move outward and separate from the fourth metal sheet 13, and the first alarm 14 and the second alarm 15 can both maintain the alarm state, so that the first alarm 14 and the second alarm 15 can maintain the alarm state for a longer period of time.

[0055] In this embodiment: the wrapping part includes a first wrapping block and a second wrapping block, the first wrapping block and the second wrapping block are respectively arranged on both sides of the chemical pipe joint 21, the first wrapping block and the second wrapping block are detachably fixedly connected, the side of the first wrapping block facing the second wrapping block is recessed to form a first accommodating groove and two first semicircular grooves, the two first semicircular grooves are respectively arranged on two opposite sides of the first accommodating groove, the side of the second wrapping block facing the first wrapping block is recessed to form a second accommodating groove and two second semicircular grooves, the two second semicircular grooves are respectively arranged on both sides of the second accommodating groove and are one-to-one opposite to the two first semicircular grooves, the first accommodating groove and the second accommodating groove are matched to form the sealed cavity, and the first semicircular groove and the second semicircular groove are matched to form a accommodating hole that matches the chemical pipe.

[0056] After the first and second wrapping blocks are installed on the chemical pipeline and fixedly connected to each other, the first and second receiving grooves form a sealed cavity, and the two first semicircular grooves and the two second semicircular grooves form two receiving holes. The joint of the chemical pipeline is located within the sealed cavity, and the chemical pipelines on both sides of the joint are respectively located within the two receiving holes. Because the first and second wrapping blocks are detachably connected, if a gas leak occurs at the joint of the chemical pipeline, the first and second wrapping blocks can be removed and separated from each other. After the first and second wrapping blocks are removed and separated from each other, the joint of the chemical pipeline can be easily repaired.

[0057] In this embodiment, the first packaging block includes a first packaging block body 1 and a first sealing gasket 16 provided on a side of the first packaging block body 1 facing the second packaging block. The side of the first packaging block body 1 facing the second packaging block is recessed to form a first groove and two second grooves. The two second grooves are provided on both sides of the first groove. A first through hole is formed on the first sealing gasket 16 at a position corresponding to the notch of the first groove and matched with the notch of the first groove. The portion of the first sealing gasket 16 at a position corresponding to the second groove is bent toward the second groove and fits against the groove wall of the second groove. The portion of the first sealing gasket 16 corresponding to the second groove is semicircular. The first through hole and the first groove constitute the first accommodating groove.

[0058] The second packaging block includes a second packaging block body 2 and a second sealing gasket 17 provided on a side of the second packaging block body 2 facing the first packaging block. The side of the second packaging block body 2 facing the first packaging block is recessed to form a third groove and two fourth grooves. The two fourth grooves are respectively provided on both sides of the third groove and are opposite to the two second grooves one by one. A second through hole is formed on the second sealing gasket 17 at a position corresponding to the notch of the third groove and matches the notch of the third groove. The part of the second sealing gasket 17 at a position corresponding to the fourth groove is bent toward the fourth groove and fits into the groove wall of the fourth groove. The part of the second sealing gasket 17 corresponding to the fourth groove is in a semicircular shape. The second through hole and the third groove constitute the second accommodating groove. The part of the first sealing gasket 16 corresponding to the two grooves and the part of the second sealing gasket 17 corresponding to the fourth groove constitute a circular ring whose annular hole matches the chemical pipeline.

[0059] After the first wrapping block and the second wrapping block are installed on the chemical pipeline and fixedly connected to each other, the first groove, the first through hole, the second through hole and the third groove form the sealed cavity, the two parts of the first sealing gasket 16 corresponding to the two second grooves and the two parts of the second sealing gasket 17 corresponding to the two fourth grooves form two circular rings, the joint of the chemical pipeline is located in the sealed cavity, and the chemical pipelines on both sides of the joint are respectively located in the two circular rings. The two parts of the first sealing gasket 16 corresponding to the two second grooves respectively abut the surfaces of the chemical pipelines on both sides of the joint, and the two parts of the second sealing gasket 17 corresponding to the two fourth grooves respectively abut the surfaces of the chemical pipelines on both sides of the joint. The remaining part of the first sealing gasket 16 abuts the remaining part of the second sealing gasket 17. The first sealing gasket 16 can also well seal the gap between the groove wall of the second groove and the surface of the chemical pipeline, and the second sealing gasket 17 can well seal the gap between the groove wall of the fourth groove and the surface of the chemical pipeline. The first sealing gasket 16 and the second sealing gasket 17 can well seal the gap between the first packaging block body 1 and the second packaging block body 2, so that the sealed cavity is in a well-sealed state, so that the chemical gas leaked into the sealed cavity is not easy to leak out from between the first packaging block and the second packaging block, and the chemical gas leaked into the sealed cavity is also not easy to leak out from the gap between the first packaging block and the chemical pipeline and the gap between the second packaging block and the chemical pipeline.

[0060] In this embodiment: the first wrapping block and the second wrapping block are arranged in the up and down direction, and two through holes are formed on the first wrapping block. The two through holes are arranged vertically and are respectively located on both sides of the chemical pipeline. The upper end of the through hole passes through the upper surface of the first wrapping block, and the lower end extends downward and passes through the lower surface of the second wrapping block; a screw 18 is provided in each of the two through holes, and a first nut 19 is screwed on the upper end of the screw 18, and a second nut 20 is screwed on the lower end of the screw 18. The first nut 19 is located on the upper side of the first wrapping block, and the second nut 20 is located on the lower side of the second wrapping block.

[0061] After the explosion-proof inspection device for chemical safety management described in the present invention is installed on the chemical pipeline, the first wrapping block and the second wrapping block are respectively located on the upper and lower sides of the chemical pipeline joint 21, and the two screws 18 are respectively located in the two through holes. The upper end of the screw 18 is screwed with the first nut 19, and the lower end of the screw 18 is screwed with the second nut 20. The lower end face of the first nut 19 abuts against the upper side face of the first wrapping block, and the upper end face of the second nut 20 abuts against the lower side face of the second wrapping block. With this structure, the first wrapping block can be fixedly connected to the second wrapping block.

[0062] To remove the first and second packaging blocks, the first nut 19 or second nut 20 is unscrewed from the screw 18, and the screw 18 is then moved downward or upward out of the through-hole. This allows the first and second packaging blocks to be separated and removed from the chemical pipeline. With this structure, the first packaging block can be removed from the second packaging block.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this 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 of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An explosion-proof inspection device for chemical safety management, characterized by: The invention comprises a wrapping part, a cylinder (3), a piston (4) and a first alarm (14); the wrapping part is fixedly arranged at the joint position of the chemical pipeline; a sealed cavity for accommodating the joint is formed in the wrapping part; the inner end of the cylinder (3) is fixedly arranged on the wrapping part; the inner cavity of the cylinder (3) is connected to the sealed cavity; the piston (4) is arranged in the cylinder (3) and cooperates with the inner cavity of the cylinder (3); the first alarm (14) is used to connect the power supply and sound an alarm after the piston (4) moves outward a certain distance.

2. The explosion-proof inspection device for chemical safety management according to claim 1, characterized in that: The invention also includes a connecting frame, a fixing plate (10), a first metal sheet (8) and a second metal sheet (9), wherein the connecting frame is fixedly connected to the piston (4), the fixing plate (10) is fixedly arranged on one side of the cylinder (3) and arranged parallel to the cylinder (3), the first metal sheet (8) is fixedly arranged on the connecting frame, the first metal sheet (8) abuts against the side of the fixing plate (10) facing the cylinder (3), the second metal sheet (9) is arranged on the fixing plate (10) and is located outside the first metal sheet (8), the second metal sheet (9) is embedded in the fixing plate (10), the side of the second metal sheet (9) facing the cylinder (3) is flush with the side of the fixing plate (10) facing the cylinder (3), and the first alarm (14) is used to connect the power supply and sound an alarm when the first metal sheet (8) contacts the second metal sheet (9).

3. The explosion-proof inspection device for chemical safety management according to claim 2, characterized in that: The first alarm (14) is a warning light.

4. The explosion-proof inspection device for chemical safety management according to claim 2, characterized in that: The invention also includes a third metal sheet (12), a fourth metal sheet (13) and a second alarm (15), wherein the third metal sheet (12) is fixed on the connecting frame and is located outside the second metal sheet (9), the third metal sheet (12) abuts against the side of the fixing plate (10) facing the cylinder (3), the fourth metal sheet (13) is provided on the fixing plate (10) and is located outside the third metal sheet (12), the fourth metal sheet (13) is embedded in the fixing plate (10), the side of the fourth metal sheet (13) facing the cylinder (3) is flush with the side of the fixing plate (10) facing the cylinder (3), and the second alarm (15) is used to connect the power supply and sound an alarm when the third metal sheet (12) contacts the fourth metal sheet (13).

5. The explosion-proof inspection device for chemical safety management according to claim 4, characterized in that: The second alarm (15) is a buzzer.

6. The explosion-proof inspection device for chemical safety management according to claim 4, characterized in that: The distance from the outer end of the first metal sheet (8) to the inner end of the second metal sheet (9) is smaller than the distance from the outer end of the third metal sheet (12) to the inner end of the fourth metal sheet (13), and the distance from the inner end of the first metal sheet (8) to the outer end of the second metal sheet (9) is larger than the distance from the outer end of the third metal sheet (12) to the inner end of the fourth metal sheet (13).

7. The explosion-proof inspection device for chemical safety management according to claim 6, characterized in that: The axis of the cylinder (3) is arranged in the horizontal direction, and a circular hole is formed on the wall of the cylinder (3), and the diameter of the circular hole is smaller than the thickness of the piston (4); and the connecting pipe (22) and the gas storage cylinder (23) are also included, one end of the connecting pipe (22) is fixedly connected to the outer surface of the cylinder (3), and the inner cavity of the connecting pipe (22) is opposite to the circular hole, and the other end of the connecting pipe (22) is fixedly connected to the gas storage cylinder (23), and the inner cavity of the connecting pipe (22) is connected to the gas storage cylinder (23). ) inner cavity; the distance from the inner edge of the circular hole to the inner end face of the piston (4) is greater than the distance from the outer end of the third metal sheet (12) to the inner end of the fourth metal sheet (13); the distance from the inner edge of the circular hole to the inner end face of the piston (4) is less than the distance from the inner end of the first metal sheet (8) to the outer end of the second metal sheet (9), and the distance from the inner edge of the circular hole to the inner end face of the piston (4) is also less than the distance from the inner end of the third metal sheet (12) to the outer end of the fourth metal sheet (13).

8. The explosion-proof inspection device for chemical safety management according to claim 1, characterized in that: The wrapping portion includes a first wrapping block and a second wrapping block, the first wrapping block and the second wrapping block are respectively arranged on both sides of the chemical pipeline joint (21), the first wrapping block and the second wrapping block are detachably fixedly connected, the side of the first wrapping block facing the second wrapping block is recessed to form a first receiving groove and two first semicircular grooves, the two first semicircular grooves are respectively arranged on two opposite sides of the first receiving groove, the side of the second wrapping block facing the first wrapping block is recessed to form a second receiving groove and two second semicircular grooves, the two second semicircular grooves are respectively arranged on both sides of the second receiving groove and are directly opposite to the two first semicircular grooves, the first receiving groove and the second receiving groove are matched to form the sealing cavity, and the first semicircular groove and the second semicircular groove are matched to form a receiving hole that matches the chemical pipeline.

9. The explosion-proof inspection device for chemical safety management according to claim 8, characterized in that: The first packaging block comprises a first packaging block body (1) and a first sealing gasket (16) provided on a side of the first packaging block body (1) facing the second packaging block, the side of the first packaging block facing the second packaging block is recessed to form a first groove and two second grooves, the two second grooves are respectively provided on both sides of the first groove, a first through hole is formed on the first sealing gasket (16) at a position corresponding to the notch of the first groove and matched with the notch of the first groove, a portion of the first sealing gasket (16) at a position corresponding to the second groove is bent toward the second groove and fits with the groove wall of the second groove, a portion of the first sealing gasket (16) corresponding to the second groove is in a semicircular ring shape, and the first through hole and the first groove constitute the first accommodating groove; The second packaging block includes a second packaging block body (2) and a second sealing gasket (17) provided on a side of the second packaging block body (2) facing the first packaging block, the side of the second packaging block body (2) facing the first packaging block is recessed to form a third groove and two fourth grooves, the two fourth grooves are respectively provided on both sides of the third groove and are opposite to the two second grooves one by one, a second through hole is formed on the second sealing gasket (17) at a position corresponding to the notch of the third groove and matched with the notch of the third groove, the part of the second sealing gasket (17) at a position corresponding to the fourth groove is bent toward the fourth groove and fits with the groove wall of the fourth groove, the part of the second sealing gasket (17) corresponding to the fourth groove is in a semicircular ring shape, the second through hole and the third groove constitute the second accommodating groove, the part of the first sealing gasket (16) corresponding to the two grooves and the part of the second sealing gasket (17) corresponding to the fourth groove constitute a circular ring whose annular hole matches the chemical pipeline.

10. The explosion-proof inspection device for chemical safety management according to claim 9, characterized in that: The first wrapping block and the second wrapping block are arranged in the up-down direction. Two through holes are formed on the first wrapping block. Both through holes are arranged vertically. The two through holes are respectively located on both sides of the chemical pipeline. The upper end of the through hole passes through the upper surface of the first wrapping block, and the lower end extends downward and passes through the lower surface of the second wrapping block. A screw (18) is provided in each of the two through holes. The upper end of the screw (18) is screwed with a first nut (19), and the lower end of the screw (18) is screwed with a second nut (20). The first nut (19) is located on the upper side of the first wrapping block, and the second nut (20) is located on the lower side of the second wrapping block.

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