Chemical workshop harmful gas monitoring and alarming device applied to safety engineering

Abstract

The utility model relates to the technical field of monitoring, in particular to a chemical workshop harmful gas monitoring and alarming device applied to safety engineering, which comprises two conveying pipelines which are butted and fixed through flanges, and sealing rings are sleeved on the outer sides of the end parts of the conveying pipelines; sealing rings are fixed to the edges of the two sides of the lantern ring, the sealing rings are pressed on the outer sides of the sealing rings, and the outer side of the lantern ring fixedly communicates with a hollow cylinder; an exhaust hole communicated with the inner cavity of the airbag penetrates through the middle part of the side wall of the hollow cylinder; the device has the beneficial effects that the lantern ring is arranged to cover the butt joint of the two conveying pipelines, the outer side of the lantern ring fixedly communicates with the hollow cylinder, the sealing plug is slidably arranged in an inner cavity of the hollow cylinder, the contact switch is fixed to the inner wall of one end of the hollow cylinder, and when poisonous gas leaks from the butt joint of the two conveying pipelines, the sealing plug slides and extrudes the contact switch; according to the device, the leakage of toxic gas can be monitored in time, and the surrounding environment is prevented from being polluted.

Description

Technical Field

[0001] This utility model relates to the field of monitoring technology, specifically to a hazardous gas monitoring and alarm device for chemical workshops used in safety engineering. Background Technology

[0002] In the chemical industry, there are various ways to protect against or alarm gas leaks, such as alarms based on changes in pressure gauge readings or gas leak detection and monitoring.

[0003] In the prior art, the utility model with publication number CN219456943U discloses a hazardous gas monitoring and alarm device for chemical production workshops, which can sense gases through three air inlets: the top of the casing, the top, and the side, resulting in a wider monitoring range and higher sensitivity.

[0004] However, traditional monitoring and alarm devices are mainly used to monitor toxic gases that have already leaked into the air. For gases transported in pipelines, there is a long time between the leak and its detection, during which time the toxic gases have already polluted the surrounding environment, posing a significant safety hazard. Therefore, this invention proposes a hazardous gas monitoring and alarm device for chemical workshops, applicable to safety engineering, to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a hazardous gas monitoring and alarm device for chemical workshops used in safety engineering, in order to solve the problem mentioned in the background art that toxic gases have already polluted the surrounding environment before they are detected.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hazardous gas monitoring and alarm device for chemical workshops applied in safety engineering, comprising:

[0007] The conveying pipeline is provided in two parts and fixed by flange connection, and a sealing ring is fitted on the outer side of the end of the conveying pipeline;

[0008] A collar is fitted around the outside of the junction of two conveying pipes. Sealing rings are fixed on both sides of the collar and are pressed against the outside of the sealing ring. A hollow cylinder is fixedly connected to the outside of the collar. A sealing plug is slidably installed in the inner cavity of the hollow cylinder. A contact switch for controlling the opening and closing of an alarm is fixed on the inner wall of one end of the hollow cylinder.

[0009] An airbag is located outside the collar and one end is fixedly connected to the side wall of the hollow cylinder. An exhaust hole communicating with the inner cavity of the airbag is opened through the middle of the side wall of the hollow cylinder.

[0010] Preferably, through holes are formed through the surface of the collar, and the through holes communicate with the inner cavity of the hollow cylinder. A boss corresponding to the contact switch is fixed on the surface of the sealing plug, and a return spring is arranged between the inner wall of one end of the hollow cylinder and the sealing plug.

[0011] Preferably, the alarm is electrically connected to the contact switch through a cable, and the surface of the airbag is fixedly connected to the outer side wall of the collar.

[0012] Preferably, the cross-section of the collar is in a "C" shape, and the collar is composed of two semi-circular monomers spliced and fixed to each other.

[0013] Preferably, one end of the two monomers is rotatably connected through a rotating shaft. Docking bumps are fixed to the other ends of the two monomers, and a sealing layer is arranged at the splicing part of the two monomers.

[0014] Preferably, a docking bolt is fixed on the surface of one docking bump, an avoidance groove is formed through the surface of the other docking bump, and the other end of the airbag is fixedly connected to one docking bump.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: <00,00033>

[0016] In the present utility model, a collar is arranged to cover the docking part of the two conveying pipelines. A hollow cylinder is fixedly connected to the outside of the collar. A sealing plug is slidably arranged in the inner cavity of the hollow cylinder. A contact switch is fixed on the inner wall of one end of the hollow cylinder. An exhaust hole is formed through the side wall of the hollow cylinder, and the exhaust hole communicates with the airbag. When toxic gas leaks at the docking part of the two conveying pipelines, the air pressure in the inner cavity of the collar gradually increases, the sealing plug slides and presses the contact switch, so as to trigger the alarm to give an alarm. At the same time, the sealing plug passes over the exhaust hole, and the toxic gas can enter the inner cavity of the airbag for temporary storage, so as to prevent the toxic gas from leaking to the outside due to excessive air pressure in the inner cavity of the collar. Compared with the traditional monitoring equipment, this device can timely monitor the leakage of toxic gas and avoid polluting the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic half-sectional view of the overall structure of the present utility model;

[0018] Figure 2 is a schematic three-dimensional view of the overall structure of the present utility model; <000,042>

[0019] Figure 3 is an exploded schematic view of the overall structure of the present utility model;

[0020] Figure 4 is a schematic view of a partial cross-section of the collar structure of the present utility model.

[0021] In the diagram: 1. Conveying pipe; 2. Sealing ring; 3. Collar; 31. Through hole; 32. Connecting protrusion; 33. Connecting bolt; 34. Clearance groove; 35. Rotating shaft; 4. Sealing ring; 5. Hollow cylinder; 51. Sealing plug; 52. Boss; 53. Return spring; 54. Exhaust port; 6. Contact switch; 7. Airbag; 8. Alarm; 81. Cable. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution:

[0024] Example 1: A hazardous gas monitoring and alarm device for a chemical workshop applied to safety engineering, comprising: a conveying pipeline 1, a collar 3, and an airbag 7.

[0025] Specifically, two conveying pipes 1 are provided and fixed by flange connection. A sealing gasket is provided between the two flanges to prevent leakage of toxic gas conveyed in the inner cavity of the conveying pipe 1. A sealing ring 2 is fitted on the outer side of the end of the conveying pipe 1. The sealing ring 2 itself is a flexible structure and can undergo elastic deformation. It can be pre-fitted on the outer side of the conveying pipe 1 between the two conveying pipes 1. The relative position of the sealing ring 2 on the outer side of the conveying pipe 1 can be adjusted according to actual needs.

[0026] Secondly, the collar 3 is fitted onto the outside of the junction of the two conveying pipes 1, such as... Figure 1 As shown, there is a gap between the collar 3 and the flange at the end of the conveying pipe 1, which will not affect the flange connection and the installation of bolts on the flange. Sealing rings 4 are fixed on both sides of the collar 3 and are pressed on the outside of the sealing ring 2. The inner diameter of the sealing ring 4 is smaller than the inner diameter of the collar 3 and is adapted to the outer diameter of the conveying pipe 1. The sealing ring 4 and the conveying pipe 1 are sealed by pressing the sealing ring 2 and are kept relatively fixed by friction. A hollow cylinder 5 is fixedly connected to the outside of the collar 3. A sealing plug 51 is slidably installed in the inner cavity of the hollow cylinder 5. A contact switch 6 for controlling the opening and closing of the alarm 8 is fixed on the inner wall of one end of the hollow cylinder 5. When a toxic gas leak occurs at the joint of the two conveying pipes 1, the air pressure in the inner cavity of the collar 3 gradually increases. At this time, the sealing plug 51 slides under the action of air pressure, thereby pressing on the contact switch 6 and activating the alarm 8 to sound an alarm.

[0027] Further, the airbag 7 is located outside the collar 3 and one end thereof is fixedly connected to the side wall of the hollow cylinder 5. An exhaust hole 54 communicating with the inner cavity of the airbag 7 is formed through the middle of the side wall of the hollow cylinder 5. As Figure 4 shown, when the sealing plug 51 slides and passes over the exhaust hole 54, the toxic gas can pass through the exhaust hole 54 and enter the inner cavity of the airbag 7 for temporary storage. The airbag 7 itself can undergo elastic deformation to store a large amount of gas, thereby preventing the toxic gas from leaking into the surrounding environment due to the gradual increase of the air pressure in the inner cavity of the collar 3.

[0028] To avoid accidental triggering of the contact switch 6, the present application further has a through hole 31 formed through the surface of the collar 3, and the through hole 31 communicates with the inner cavity of the hollow cylinder 5. A boss 52 corresponding to the contact switch 6 is fixedly provided on the surface of the sealing plug 51. As Figure 4 shown, when the sealing plug 51 slides, the contact switch 6 can be contact-extruded through the boss 52. A return spring 53 is provided between the inner wall of one end of the hollow cylinder 5 and the sealing plug 51. The return spring 53 is mainly used to reset the sealing plug 51 to avoid accidental sliding of the sealing plug 51 and resulting in accidental triggering of the contact switch 6.

[0029] To control the opening and closing of the alarm 8, the present application further has an electrical connection between the alarm 8 and the contact switch 6 through a cable 81. When the contact switch 6 is squeezed, the alarm 8 can be controlled to perform an alarm operation through the cable 81. The surface of the airbag 7 is fixedly connected to the outer side wall of the collar 3, which can prevent the airbag 7 from shaking randomly.

[0030] To facilitate the installation and disassembly of the collar 3, the cross-section of the collar 3 of the present application is in a "C" shape. The collar 3 is composed of two semi-circular monomers spliced and fixed to each other. The two monomers can be separated from each other to facilitate the installation and disassembly with the conveying pipe 1.

[0031] To describe the structure of the collar 3 in detail, one end of the two monomers of the present application is rotatably connected through a rotating shaft 35. Docking protrusions 32 are fixed to the other ends of the two monomers. A sealing layer is provided at the splicing part of the two monomers. A docking bolt 33 is fixedly provided on the surface of one docking protrusion 32, and an avoidance groove 34 is formed through the surface of the other docking protrusion 32. As Figure 3 shown, the two monomers can rotate independently around the rotating shaft 35 to achieve the splicing or separation of the whole collar 3. The docking bolt 33 passes through the avoidance groove 34 and is fixed by a nut to achieve the positioning and sealing of the collar 3 itself. The other end of the airbag 7 is fixedly connected to one docking protrusion 32.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hazardous gas monitoring and alarm device for chemical workshops used in safety engineering, characterized in that: Including: Transport pipelines (1), two of the transport pipelines (1) are provided and fixed by flange docking, and sealing rings (2) are sleeved on the outer sides of the ends of the transport pipelines (1); A collar (3), the collar (3) is sleeved on the outer side of the docking part of the two transport pipelines (1), sealing rings (4) are fixed at both side edges of the collar (3), and the sealing rings (4) press on the outer sides of the sealing rings (2). A hollow cylinder (5) is fixedly connected to the outside of the collar (3). A sealing plug (51) is slidably arranged in the inner cavity of the hollow cylinder (5). A contact switch (6) for controlling the opening and closing of an alarm (8) is fixed on the inner wall of one end of the hollow cylinder (5); An airbag (7), the airbag (7) is located outside the collar (3), and one end is fixedly connected to the side wall of the hollow cylinder (5). An exhaust hole (54) communicating with the inner cavity of the airbag (7) is penetrated through the middle of the side wall of the hollow cylinder (5).

2. The hazardous gas monitoring and alarm device for chemical workshops applied in safety engineering according to claim 1, characterized in that: Through holes (31) are penetrated through the surface of the collar (3), and the through holes (31) communicate with the inner cavity of the hollow cylinder (5). A convex platform (52) corresponding to the contact switch (6) is fixed on the surface of the sealing plug (51). A return spring (53) is arranged between the inner wall of one end of the hollow cylinder (5) and the sealing plug (51).

3. The hazardous gas monitoring and alarm device for chemical workshops applied in safety engineering according to claim 2, characterized in that: The alarm (8) is electrically connected to the contact switch (6) through a cable (81), and the surface of the airbag (7) is fixedly connected to the outer side wall of the collar (3).

4. The hazardous gas monitoring and alarm device for chemical workshops applied to safety engineering as described in claim 3, characterized in that: The cross section of the collar (3) is in a "C" shape, and the collar (3) is composed of two semi-circular monomers spliced and fixed to each other.

5. The hazardous gas monitoring and alarm device for chemical workshops applied to safety engineering as described in claim 4, characterized in that: One ends of the two monomers are rotatably connected through a rotating shaft (35). Docking bumps (32) are fixed at the other ends of the two monomers. A sealing layer is arranged at the splicing part of the two monomers.

6. The hazardous gas monitoring and alarm device for chemical workshops applied to safety engineering as described in claim 5, characterized in that: A docking bolt (33) is fixed on the surface of one docking bump (32), an avoidance groove (34) is penetrated through the surface of the other docking bump (32), and the other end of the airbag (7) is fixedly connected to one docking bump (32).

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