Gas equipment state detection device
By using a mesh bag and molecular sieve in the back cover to filter sulfides in the gas equipment condition monitoring device, and by sealing the air inlet under high-concentration gas conditions, the problem of damage to the gas equipment condition monitoring device in high-concentration gas and sulfide-containing environments was solved, and the stable operation of the device was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-03
AI Technical Summary
Existing gas equipment condition monitoring devices are easily damaged in high-concentration gas and sulfur-containing environments, and the chemical properties of the catalyst undergo irreversible changes.
The device uses a mesh bag and a back cover filled with molecular sieves to filter sulfides, and a gas flow regulation component is set up to seal the air inlet under high concentration of gas to prevent the detection element from being in contact with high concentration of gas for a long time.
Effective filtration of sulfides prevents changes in the chemical properties of the catalyst, avoids damage to detection elements, and ensures normal operation of the device under high concentrations of fuel gas.
Smart Images
Figure CN224081552U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas sensor technology, and in particular to a gas equipment status detection device. Background Technology
[0002] Gas equipment condition monitoring devices are used to monitor the operating status and safety of gas pipelines and valves in real time. They detect gas leaks through sensors and provide timely warnings to prevent gas accidents. Gas equipment condition monitoring devices often use catalytic combustion gas sensors to detect gas leaks. When combustible gas comes into contact with a catalyst, it generates heat through an oxidation reaction, causing the bridge in the sensor to become unbalanced, thereby outputting a signal.
[0003] However, in existing catalytic combustion gas sensors, when the concentration of the combustible gas far exceeds the sensor's design range, the combustion reaction becomes too violent, and the resulting high temperature can burn out the detection element, leading to permanent damage.
[0004] Meanwhile, when used in chemical plants, sulfides in the environment react with platinum catalysts to form platinum sulfide, causing irreversible changes in the chemical properties of the catalyst and rendering the sensor ineffective.
[0005] To address these issues, a gas equipment condition monitoring device is proposed. Utility Model Content
[0006] The purpose of this invention is to solve the problem that existing gas equipment condition detection devices are easily damaged when used in environments with high concentrations of gas and high sulfur content, and to propose a gas equipment condition detection device.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A gas equipment status detection device includes a base and a miniature push cylinder. A housing is fixedly connected to the surface of the base. An air inlet assembly is provided at one end of the housing away from the base. A mounting seat is provided inside the housing. One side of the mounting seat is fixedly connected to the base. A detection element and a compensation element are fixedly connected to the other side of the mounting seat. A through pipe is fixedly installed at the center of the mounting seat. A gas flow regulating assembly is provided at one end of the through pipe away from the base. The miniature push cylinder is fixedly installed inside the base.
[0009] Preferably, a fire-resistant mesh is provided on the outer wall of the through pipe at the end away from the mounting base, one end of the fire-resistant mesh is fixedly connected to the outer wall of the through pipe, and the other end of the fire-resistant mesh is fixedly connected to the surface of the mounting base.
[0010] Preferably, the air intake assembly includes a retaining ring, the outer wall of which has multiple through air intakes, and a mesh bag is bonded between the outer wall of the retaining ring and the inner wall of the housing.
[0011] Preferably, the air flow regulating component includes a connecting rod and a temperature probe. The connecting rod is slidably disposed inside the through pipe. One end of the connecting rod is fixedly connected to the output end of the micro push cylinder. The other end of the sliding connecting rod is threadedly connected to a rear cover. The end of the rear cover away from the sliding connecting rod is threadedly connected to a flow-limiting cover.
[0012] Preferably, the temperature probe is fixedly mounted on the surface of the mounting base, and the temperature probe is aligned with the center of the detection element.
[0013] Preferably, the surface of the flow-limiting cover away from the rear cover has multiple flow-limiting holes, a barrier net is fixedly connected inside the flow-limiting holes, and a sealing ring is fixedly connected to the outer wall of the flow-limiting cover, with the sealing ring and the fixing ring being interference fit.
[0014] Preferably, both the mesh bag and the back cover are filled with molecular sieves, and the molecular sieves are of type NaX-C.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] 1. By setting up a mesh bag, a back cover, and a molecular sieve, this utility model can filter sulfides in the air when sulfur-containing air enters through the molecular sieve filled in the mesh bag and back cover, thus avoiding irreversible changes in the chemical properties of the catalyst in the detection element.
[0017] 2. This utility model, by setting up a gas flow regulating component, when a high concentration of gas enters the housing and causes the detection element to react violently and generate high temperature, the miniature push cylinder extends and pushes the connecting rod. The connecting rod pushes the rear cover and the flow-limiting cover to slide outward within the fixing ring. The flow-limiting cover closes the air inlet. At this time, the leaked gas can only enter through a small number of flow-limiting holes. This avoids the detection sensor from being in contact with a large amount of high-concentration gas for a long time without affecting the detection, thus preventing damage to the detection element. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a gas equipment condition detection device proposed in this utility model under normal conditions;
[0019] Figure 2 This is a schematic diagram of the structure of a gas equipment status detection device under a flow-limiting state proposed in this utility model;
[0020] Figure 3 This is a cross-sectional view of the internal structure of a gas equipment condition detection device proposed in this utility model;
[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0022] Figure 5 This is a structural assembly drawing of a gas equipment condition detection device proposed in this utility model;
[0023] Figure 6 This is a structural assembly diagram of the base in a gas equipment condition detection device proposed in this utility model;
[0024] Figure 7 This is a structural cross-sectional view of the housing in a gas equipment condition detection device proposed in this utility model.
[0025] In the diagram: 1. Base; 2. Miniature push cylinder; 3. Housing; 4. Mounting base; 5. Detection element; 6. Compensation element; 7. Through pipe; 8. Flame arrestor mesh; 9. Fixing ring; 10. Air inlet; 11. Mesh bag; 12. Connecting rod; 13. Temperature probe; 14. Rear cover; 15. Flow limiting cover; 16. Flow limiting hole; 17. Sealing ring; 18. Molecular sieve. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0027] Reference Figure 1-7 A gas equipment status detection device includes a base 1 and a miniature push cylinder 2. A housing 3 is fixedly connected to the surface of the base 1. An air inlet assembly is provided at one end of the housing 3 away from the base 1. A mounting seat 4 is provided inside the housing 3. One side of the mounting seat 4 is fixedly connected to the base 1. A detection element 5 and a compensation element 6 are fixedly connected to the other side of the mounting seat 4. A through pipe 7 is fixedly installed at the center of the mounting seat 4. A gas flow regulating assembly is provided at one end of the through pipe 7 away from the base 1. The miniature push cylinder 2 is fixedly installed inside the base 1.
[0028] It should be noted that the miniature push cylinder 2, the detection element 5, and the compensation element 6 are all existing technologies. The model of the miniature push cylinder 2 is BLASF10-C142, which will not be described in detail later.
[0029] Furthermore, a fire-resistant mesh 8 is provided on the outer wall of the end of the through pipe 7 away from the mounting base 4. One end of the fire-resistant mesh 8 is fixedly connected to the outer wall of the through pipe 7, and the other end of the fire-resistant mesh 8 is fixedly connected to the surface of the mounting base 4 to prevent sparks from splashing out.
[0030] Furthermore, the air intake assembly includes a retaining ring 9, the outer wall of which has multiple through air inlets 10 to support large airflow intake, and a mesh bag 11 is bonded between the outer wall of the retaining ring 9 and the inner wall of the housing 3.
[0031] Furthermore, the gas flow regulating component includes a connecting rod 12 and a temperature probe 13. The connecting rod 12 is slidably disposed inside the through pipe 7. One end of the connecting rod 12 is fixedly connected to the output end of the micro push cylinder 2. The other end of the sliding connecting rod 12 is threadedly connected to a rear cover 14. The end of the rear cover 14 away from the sliding connecting rod 12 is threadedly connected to a flow limiting cover 15. The temperature probe 13 is fixedly mounted on the surface of the mounting base 4. The temperature probe 13 is aligned with the center of the detection element 5. The surface of the flow limiting cover 15 away from the rear cover 14 has multiple flow limiting holes 16. A barrier net is fixedly connected inside the flow limiting holes 16 to prevent the molecular sieve 18 from falling off. A sealing ring 17 is fixedly connected to the outer wall of the flow limiting cover 15. The sealing ring 17 is interference-fitted with the fixing ring 9.
[0032] It should be noted that when a gas leak occurs suddenly, a large amount of high-concentration gas will leak in a short period of time. The high-concentration gas produced by the leak will be rapidly diluted by the air flow. This phenomenon will not be elaborated on later.
[0033] The further advantage of the above is that when high-concentration gas enters the housing 3, causing the detection element 5 to react violently and generate high temperature, the miniature pusher 2 extends and pushes the connecting rod 12. The connecting rod 12 pushes the rear cover 14 and the flow-limiting cover 15 to slide outward within the fixing ring 9. The flow-limiting cover 15 closes the air inlet 10. At this time, the leaked gas can only enter through a small number of flow-limiting holes 16. This avoids the detection sensor from being in contact with a large amount of high-concentration gas for a long time without affecting the detection, thus preventing damage to the detection element 5.
[0034] Furthermore, both the mesh bag 11 and the back cover 14 are filled with molecular sieve 18, the molecular sieve 18 being of type NaX-C.
[0035] A further advantage of the above is that when sulfur-containing air and leaked fuel gas enter the housing 3 through the air inlet 10 and the flow restrictor 16, the sulfides in the air are filtered by the molecular sieve 18 filled in the mesh bag 11 and the rear cover 14, thus preventing irreversible changes in the chemical properties of the catalyst in the detection element 5.
[0036] The default usage state of this utility model is as follows: Figure 1As shown, when used in this state, if there is a regular gas leak in the detection area, the leaked gas will enter the housing 3 along with the air through the air inlet 10 and the flow restriction hole 16. During this process, if the air contains sulfides, the sulfides in the sulfur-containing air will be filtered by the molecular sieve 18 filled in the mesh bag 11 and the rear cover 14, preventing the sulfides from reacting with the catalyst in the detection element 5 after entering the housing 3, thus avoiding irreversible changes in the chemical properties of the catalyst and achieving the function of filtering sulfides.
[0037] When a gas leak occurs, a high concentration of gas enters the housing 3, causing the detection element 5 to react violently and generate high temperatures. At this time, the temperature probe 13 detects an abnormal temperature and activates the micro push cylinder 2 via an industrial control computer. After the micro push cylinder 2 extends, it pushes the connecting rod 12 to slide within the through pipe 7. The connecting rod 12 then pushes the rear cover 14 and the flow-limiting cover 15 to slide outward within the fixing ring 9 until they slide to the desired position. Figure 2 As shown in the diagram, in this state, high-concentration gas can only slowly enter the housing 3 through a small number of flow-limiting holes 16. This avoids the detection element 5 from being in contact with a large amount of high-concentration gas for a long time without affecting the detection, thus preventing the detection element 5 from being damaged due to gas "poisoning".
[0038] After the high-concentration gas is diluted, the temperature probe 13 detects that the temperature is normal. At this time, the miniature push cylinder 2 retracts, driving the rear cover 14 and the flow-limiting cover 15 to reset, restoring the large-flow air intake.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A gas appliance condition detection device comprising a base (1) and a micro-push button (2), characterized in that, The surface of the base (1) is fixedly connected with the shell (3), one end of the shell (3) away from the base (1) is provided with an air inlet channel assembly, the shell (3) is provided with a mounting seat (4), one side of the mounting seat (4) is fixedly connected with the base (1), the other side of the mounting seat (4) is fixedly connected with a detection element (5) and a compensation element (6), the center of the mounting seat (4) is fixedly installed with a through pipe (7), one end of the through pipe (7) away from the base (1) is provided with an air flow adjusting assembly, and the micro push cylinder (2) is fixedly installed in the base (1).
2. A gas appliance condition detection apparatus according to claim 1, characterised in that: The outer side wall of the through pipe (7) away from the mounting seat (4) is provided with a fire-retardant net (8), one end of the fire-retardant net (8) is fixedly connected with the outer side wall of the through pipe (7), and the other end of the fire-retardant net (8) is fixedly connected with the surface of the mounting seat (4).
3. The gas appliance condition detection apparatus of claim 1, wherein: The air inlet channel assembly comprises a fixed ring (9), a plurality of air inlets (10) are formed in the outer wall of the fixed ring (9), and a mesh bag (11) is bonded between the outer wall of the fixed ring (9) and the inner wall of the shell (3).
4. A gas appliance condition detection apparatus according to claim 3, characterised in that: The air flow adjusting assembly comprises a connecting rod (12) and a temperature measuring probe (13), the connecting rod (12) is slidably arranged in the through pipe (7), one end of the connecting rod (12) is fixedly connected with the output end of the micro push cylinder (2), the other end of the connecting rod (12) is threadedly connected with a rear cover (14), and one end of the rear cover (14) away from the sliding connecting rod (12) is threadedly connected with a flow limiting cover (15).
5. A gas appliance condition detection apparatus according to claim 4, characterised in that: The temperature measuring probe (13) is fixedly installed on the surface of the mounting seat (4), and the temperature measuring probe (13) is aligned with the center of the detection element (5).
6. A gas appliance condition detection apparatus according to claim 4, characterised in that: A plurality of flow limiting holes (16) are formed in the surface of the flow limiting cover (15) away from the rear cover (14), a blocking net is fixedly connected in the flow limiting hole (16), a sealing ring (17) is fixedly connected to the outer side wall of the flow limiting cover (15), and the sealing ring (17) is in interference fit with the fixed ring (9).
7. A gas appliance condition detection apparatus according to claim 4, characterised in that: The mesh bag (11) and the rear cover (14) are filled with molecular sieve (18), and the model of the molecular sieve (18) is NaX-C.