Detection device for boiler pressure vessel leakage

Abstract

The utility model relates to pressure vessel detection technical field especially relates to the detection device for the leakage of boiler pressure vessel, the utility model discloses the gas collecting cover and trigger mechanism, the gas collecting cover top is provided with trigger mechanism, and trigger mechanism is used for detecting the pressure change in the gas collecting cover. The utility model discloses the structural design of trigger mechanism and alarm mechanism, solves the problem that electronic sensor is easy to fail, short life in high temperature, high humidity environment, is applicable to the industrial field, and the alarm mechanism sends out the sound and flash alarm after triggering, causes the attention of operating personnel. Through the structural design of sealed collection subassembly and visual detection mechanism, can be quickly, firmly adsorbed on the surface of pressure vessel, and the sealing lip is pasted the surface, forms the closed detection cavity, and the operating personnel can directly judge the leakage grade through the observation window when leaking, and two sets of structures constitute the redundancy safety system, and one set of system fails, and another set can still work normally, improves the fault tolerance and reliability of overall device.

Description

Technical Field

[0001] This utility model relates to the field of container leakage detection technology, and in particular to a detection device for leaks in boiler pressure vessels. Background Technology

[0002] In industrial production, boilers and pressure vessels are widely used pressure-bearing equipment. Because they typically store high-temperature, high-pressure, or toxic and harmful media, leaks can lead to serious safety accidents such as production shutdowns, environmental pollution, and even explosions. For example, a boiler pressure vessel leakage detection device with public announcement number CN218330444U has the features of adjustable height and dust shielding. It includes a first connecting pipe, several sliders on the right side of the first connecting pipe, a motor on the upper part of the first connecting pipe, a first gear on the right side of the motor and meshing with a second gear, a second connecting pipe in the middle of the second gear, several sliding grooves on the left side of the second connecting pipe that match the sliders, a detection device on the upper part of the second connecting pipe, a time relay on the rear of the detection device and connected to the detection device by wires, a connecting plate on the upper part of the second connecting pipe, an electric telescopic rod on the connecting plate and connected to the time relay by wires, a housing on the lower part of the electric telescopic rod, and a rotating cover on the upper part of the housing via bearings. In summary, the existing technology has the following technical problems: Although the existing technology adds a dustproof function to the detection device during use, it relies on electronic sensors and electric drive. In high-temperature and high-humidity industrial environments such as boiler rooms, the reliability and lifespan of electronic components will decrease, posing potential risks. Therefore, we propose a detection device for boiler pressure vessel leakage. Utility Model Content

[0003] The purpose of this invention is to provide a detection device for leaks in boiler pressure vessels, in order to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A detection device for boiler pressure vessel leaks includes a gas collection hood and a triggering mechanism. The gas collection hood is used to cover and collect the medium at potential leak points. The top of the gas collection hood is equipped with a triggering mechanism for detecting pressure changes inside the gas collection hood. The bottom of the gas collection hood is equipped with a sealing collection assembly to prevent the medium from leaking into the external environment, thereby improving the accuracy and reliability of the detection.

[0005] Preferably, the sealing and collecting assembly includes a fitting groove, a permanent magnet ring, and a sealing lip. The edge of the gas collecting hood opening is provided with an annular fitting groove, the permanent magnet ring is fixed in the fitting groove, and the sealing lip is fixed to the inner wall of the gas collecting hood opening. The sealing lip is used to contact the equipment surface to achieve a functional seal between the gas collecting hood and the equipment.

[0006] Preferably, the triggering mechanism includes a first fixing block, a first return spring, a pressure-sensitive diaphragm, a mounting groove, and a sealing gasket. The mounting groove is formed on the inner side of the top of the gas collecting hood. The pressure-sensitive diaphragm is fixed within the mounting groove. A sealing gasket is fixed between the pressure-sensitive diaphragm and the mounting groove. Multiple first fixing blocks are arrayed and fixed to the bottom of the pressure-sensitive diaphragm on the inner wall of the gas collecting hood. A first return spring is provided between the first fixing block and the pressure-sensitive diaphragm. One end of the first return spring is fixed to the first fixing block, and the other end contacts the edge of the pressure-sensitive diaphragm. An alarm mechanism is provided at the top of the pressure-sensitive diaphragm. The alarm mechanism is used to convert the minute deformation of the pressure-sensitive diaphragm into an amplified mechanical displacement to trigger an alarm.

[0007] Preferably, the alarm mechanism includes an I-beam, bearings, a rotating shaft, a second fixing block, a micro switch, an alarm, and a light emitter. The alarm is fixed to one side of the top of the gas collection hood, and a micro switch is installed at the top of the alarm. The second fixing blocks are symmetrically fixed to one side of the top of the alarm. Bearings are fixed inside both second fixing blocks, and a rotating shaft is inserted between the two bearings. The I-beam is fixed to the outside of the rotating shaft. The I-beam is rotatably mounted between the second fixing blocks via the bearings and the rotating shaft, forming an unequal-arm lever. One end of the long lever arm of the I-beam abuts against the center of the pressure-sensitive diaphragm, and the other end is positioned above the micro switch. The light emitter is integrated on the side of the alarm away from the pressure-sensitive diaphragm.

[0008] Preferably, a visual detection mechanism is provided on one side of the gas collection hood, which is used to observe the degree of leakage.

[0009] Preferably, the visual detection mechanism includes a cylinder, an observation window, a bayonet, a piston, a cavity, and a second return spring. The cylinder is fixed to one side of the gas collecting hood, and the cylinder communicates with the interior of the gas collecting hood. An observation window is provided on the outer wall of the cylinder, and the observation window has scales of different colors. A bayonet is provided at the connection between the cylinder and the gas collecting hood. A cavity is provided inside the cylinder, and a piston is slidably connected inside the cavity. The diameter of the bayonet is smaller than the diameter of the piston, which restricts the piston. A second return spring is provided between the cavity and the piston, and the second return spring is used to apply a return force to the piston toward the bayonet.

[0010] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0011] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects: This invention solves the problem of electronic sensors being prone to failure and having a short lifespan in high temperature and high humidity environments through the structural design of the triggering mechanism and the alarm mechanism. It is suitable for harsh industrial sites. After the alarm mechanism is triggered, it emits sound and flashing alarms, which effectively attracts the attention of operators and ensures that alarm information is received in a timely manner.

[0012] This invention, through the structural design of the sealed collection component and the visual detection mechanism, can quickly and firmly adhere to the surface of ferromagnetic equipment. The sealing lip adapts to the unevenness of the surface, forming an effective sealed detection cavity. In case of leakage, the operator can intuitively judge the leakage level through the observation window.

[0013] The two sets of structures form a redundant safety system. If one system fails, the other can still work normally, which improves the fault tolerance and safety reliability of the overall device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the bottom connection structure of this utility model; Figure 3 This is a schematic diagram of the connection structure between the pressure-sensitive diaphragm and the sealing gasket of this utility model; Figure 4 This is a schematic diagram of the connection structure between the permanent magnet ring and the fitting groove of this utility model; Figure 5 This is a schematic diagram of the connection structure between the cylinder and the observation window of this utility model; Figure 6 This is a schematic diagram of the connection structure between the piston and the second return spring of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: In the diagram: 100, gas collection hood; 101, permanent magnet ring; 102, sealing lip; 103, fitting groove; 200, triggering mechanism; 201, first fixing block; 202, first return spring; 203, pressure-sensitive diaphragm; 204, mounting groove; 205, sealing gasket; 206, I-beam; 207, bearing; 208, rotating shaft; 209, second fixing block; 210, micro switch; 211, alarm; 212, light emitter; 300, cylinder; 301, observation window; 302, bayonet; 303, piston; 304, cavity; 305, second return spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Example 1 Reference Figure 1-6 A detection device for boiler pressure vessel leaks includes a gas collection hood 100 and a triggering mechanism 200. The gas collection hood 100 is used to cover and collect the medium at potential leak points, providing a basis for subsequent leak detection. The gas collection hood 100 is a hollow semi-circle that directly covers and is fixed to the potential leak point to be monitored. The triggering mechanism 200 is provided at the top of the gas collection hood 100 to detect pressure changes inside the gas collection hood 100. A sealing collection assembly is provided at the bottom of the gas collection hood 100 to prevent the medium from leaking into the external environment, thereby improving the accuracy and reliability of the detection.

[0019] The sealing and collecting assembly includes a fitting groove 103, a permanent magnet ring 101, and a sealing lip 102. The edge of the opening of the gas collecting hood 100 has an annular fitting groove 103, and the permanent magnet ring 101 is fixed inside the fitting groove 103. The permanent magnet ring 101 is a neodymium iron boron magnet. The sealing lip 102 is fixed to the inner wall of the opening of the gas collecting hood 100. The sealing lip 102 is made of perfluoroether rubber, which is resistant to high temperatures. The sealing lip 102 is used to contact the surface of the equipment to achieve a functional seal between the gas collecting hood 100 and the equipment, effectively preventing leakage of the collected medium and ensuring that the pressure changes inside the gas collecting hood 100 can accurately reflect the leakage of the boiler pressure vessel.

[0020] Example 2 Further optimizations to Example 1, specifically, such as... Figure 2-3As shown, the triggering mechanism 200 includes a first fixing block 201, a first return spring 202, a pressure-sensing diaphragm 203, a mounting groove 204, and a sealing gasket 205. The mounting groove 204 is formed on the inner side of the top of the gas collecting hood 100. The pressure-sensing diaphragm 203 is fixed within the mounting groove 204. The pressure-sensing diaphragm 203 is a circular thin film with fixed edges and a deformable center. The pressure-sensing diaphragm 203 can sensitively sense pressure changes within the gas collecting hood 100 and produce minute deformations. The sealing gasket 205 is fixed between the pressure-sensing diaphragm 203 and the mounting groove 204. The sealing gasket 205 ensures a seal between the pressure-sensing diaphragm 203 and the mounting groove 204, preventing media leakage from affecting the detection results. As a result, multiple first fixing blocks 201 are arrayed and fixed on the bottom of the pressure-sensitive diaphragm 203 on the inner wall of the gas collection hood 100. A first return spring 202 is provided between the first fixing block 201 and the pressure-sensitive diaphragm 203. The force provided by the first return spring 202 is equal to the gravity generated by the I-beam 206 on the pressure-sensitive diaphragm 203, so that the two are in the initial position without external force. One end of the first return spring 202 is fixed to the first fixing block 201, and the other end is in contact with the edge of the pressure-sensitive diaphragm 203. An alarm mechanism is provided at the top of the pressure-sensitive diaphragm 203. The alarm mechanism is used to convert the small deformation of the pressure-sensitive diaphragm 203 into an amplified mechanical displacement to trigger an alarm.

[0021] The alarm mechanism includes an I-beam 206, bearings 207, a rotating shaft 208, second fixing blocks 209, a micro switch 210, an alarm 211, and a light emitter 212. The alarm 211 is fixed to one side of the top of the gas collection hood 100. A micro switch 210 is installed at the top of the alarm 211. Second fixing blocks 209 are symmetrically fixed to one side of the top of the alarm 211. Bearings 207 are fixed inside each of the two second fixing blocks 209. A rotating shaft 208 is inserted between the two bearings 207. The I-beam 206 is fixed to the outside of the rotating shaft 208. The I-beam 206 is made of aluminum and is lightweight. The I-beam 206 is rotatably mounted between the second fixing blocks 209 via the bearings 207 and the rotating shaft 208, forming unequal arms. The lever has one end of the long lever arm 206 that abuts against the center of the pressure-sensitive diaphragm 203, and the other end is positioned above the micro switch 210. The alarm 211 integrates a light emitter 212 on the side away from the pressure-sensitive diaphragm 203. The bearing 207 reduces friction, decreases the force required for the pressure-sensitive diaphragm 203 to trigger the lever 206, and improves alarm sensitivity. The unequal-arm lever structure formed by the lever 206, bearing 207, and shaft 208 amplifies the minute deformation of the pressure-sensitive diaphragm 203, making the micro switch 210 easier to trigger. When the micro switch 210 is triggered, the alarm 211 emits an audible alarm, and the light emitter 212 emits a light signal, alerting staff through both sound and light.

[0022] Example 3 Further optimizations to Example 1, specifically, such as... Figure 5-6As shown, a visual inspection mechanism is provided on one side of the gas collection hood 100, which is used to observe the degree of leakage.

[0023] The visual inspection mechanism includes a cylinder 300, an observation window 301, a bayonet 302, a piston 303, a cavity 304, and a second return spring 305. The cylinder 300 is fixed to one side of the gas collecting hood 100, and the cylinder 300 communicates with the interior of the gas collecting hood 100. An observation window 301 is provided on the outer wall of the cylinder 300, and the observation window 301 is provided with scales of different colors. A bayonet 302 is provided at the connection between the cylinder 300 and the gas collecting hood 100. A cavity 304 is provided inside the cylinder 300, and the piston 303 is slidably connected inside the cavity 304. The diameter of the bayonet 302 is smaller than that of the piston 303, which restricts the piston 303 and prevents it from dislodging. A second return spring 305 is installed between the cavity 304 and the piston 303. The second return spring 305 applies a return force to the piston 303 towards the bayonet 302. The medium in the gas collecting hood 100 enters the cylinder 300, pushing the piston 303 to slide within the cavity 304. Different colored scales on the observation window 301 clearly show the degree of leakage, allowing personnel to understand the leakage situation in a timely manner. The second return spring 305 enables the piston 303 to return to its original position when the leakage stops or the pressure returns to normal, facilitating the next inspection.

[0024] In summary: This utility model addresses the technical problem that existing technologies rely too heavily on electronic sensors and electric drives. In harsh industrial environments with high temperatures and humidity, such as boiler rooms, the reliability and lifespan of electronic components decrease significantly, creating a large safety blind spot. The present invention employs the technical solutions described in the above embodiments. Furthermore, the implementation process of the above technical solutions is as follows: The detection device is fixed at the position to be detected. When the boiler pressure vessel is operating normally and there is no leakage, the pressure inside the gas collection hood 100 remains stable. The pressure-sensing diaphragm 203 is in the initial position under the action of the first reset spring 202. The I-beam 206 does not trigger the micro switch 210. The alarm 211 and the light emitter 212 do not work. The piston 303 is close to the position of the bayonet 302 under the action of the second reset spring 305.

[0025] When a boiler pressure vessel leaks, the leaked medium enters the gas collection hood 100, causing the pressure inside the gas collection hood 100 to rise. The pressure change causes the pressure-sensitive diaphragm 203 to undergo a slight deformation. The protrusion of the pressure-sensitive diaphragm 203 pushes the I-beam 206 to rotate around the shaft 208. Since the I-beam 206 forms an unequal-arm lever, the slight displacement at the end of its long lever arm is amplified, thereby triggering the micro switch 210. After the micro switch 210 is triggered, the alarm 211 emits an audible alarm, and the light emitter 212 emits a light signal to remind the staff that there is a leak in the boiler pressure vessel.

[0026] Simultaneously, the leaked medium enters the cylinder 300 through the bayonet 302, pushing the piston 303 to slide within the cavity 304 against the elastic force of the second return spring 305. The extent of the leak can be visually assessed through the scale on the observation window 301.

[0027] With the above-mentioned settings, this application will certainly solve the above-mentioned technical problems, and at the same time achieve the following technical effects: This invention solves the problem of electronic sensors being prone to failure and having a short lifespan in high temperature and high humidity environments through the structural design of the triggering mechanism and the alarm mechanism. It is suitable for harsh industrial sites. After the alarm mechanism is triggered, it emits sound and flashing alarms, which effectively attracts the attention of operators and ensures that alarm information is received in a timely manner.

[0028] This invention, through the structural design of the sealed collection component and the visual detection mechanism, can quickly and firmly adhere to the surface of ferromagnetic equipment. The sealing lip adapts to the unevenness of the surface, forming an effective sealed detection cavity. In case of leakage, the operator can visually judge the leakage through the observation window.

[0029] The two sets of structures form a redundant safety system. If one system fails, the other can still work normally, which improves the fault tolerance and safety reliability of the overall device.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A detection device for leaks in boiler pressure vessels, characterized in that, It includes a gas collection hood (100) and a triggering mechanism (200). The gas collection hood (100) is used to cover and collect the medium at potential leakage points. The top of the gas collection hood (100) is provided with a triggering mechanism (200) for detecting pressure changes inside the gas collection hood (100). The bottom of the gas collection hood (100) is provided with a sealing collection assembly.

2. The detection device for boiler pressure vessel leakage according to claim 1, characterized in that, The sealing and collecting assembly includes a fitting groove (103), a permanent magnet ring (101), and a sealing lip (102). The opening edge of the gas collecting hood (100) is provided with an annular fitting groove (103). The permanent magnet ring (101) is fixed in the fitting groove (103). The sealing lip (102) is fixed on the inner wall of the opening of the gas collecting hood (100). The sealing lip (102) is used to contact the surface of the equipment to achieve a functional seal between the gas collecting hood (100) and the equipment.

3. The detection device for boiler pressure vessel leakage according to claim 1, characterized in that, The triggering mechanism (200) includes a first fixing block (201), a first return spring (202), a pressure-sensitive diaphragm (203), a mounting groove (204), and a sealing gasket (205). The mounting groove (204) is formed on the inner side of the top of the gas collecting hood (100). The pressure-sensitive diaphragm (203) is fixed within the mounting groove (204). The sealing gasket (205) is fixed between the pressure-sensitive diaphragm (203) and the mounting groove (204). The bottom of the pressure-sensitive diaphragm (203) is located within the gas collecting hood (100). Multiple first fixing blocks (201) are fixed in an array on the inner wall. A first reset spring (202) is provided between the first fixing block (201) and the pressure-sensitive diaphragm (203). One end of the first reset spring (202) is fixed on the first fixing block (201), and the other end is in contact with the edge of the pressure-sensitive diaphragm (203). An alarm mechanism is provided at the top of the pressure-sensitive diaphragm (203). The alarm mechanism is used to convert the small deformation of the pressure-sensitive diaphragm (203) into an amplified mechanical displacement to trigger an alarm.

4. The detection device for boiler pressure vessel leakage according to claim 3, characterized in that, The alarm mechanism includes an I-beam (206), a bearing (207), a rotating shaft (208), a second fixing block (209), a micro switch (210), an alarm (211), and a light emitter (212). The alarm (211) is fixed to one side of the top of the gas collection hood (100). A micro switch (210) is installed at the top of the alarm (211). The second fixing blocks (209) are symmetrically fixed to one side of the top of the alarm (211). Bearings (207) are fixed inside both second fixing blocks (209). A rotating shaft (208) is inserted between (207), and an I-beam (206) is fixed on the outside of the rotating shaft (208). The I-beam (206) is rotatably disposed between the rotating shaft (208) and the second fixed block (209) through the bearing (207) to form an unequal arm lever. One end of the long lever arm of the I-beam (206) abuts against the center of the pressure-sensitive diaphragm (203), and the other end is disposed above the micro switch (210). The alarm (211) integrates a light emitter (212) on the side away from the pressure-sensitive diaphragm (203).

5. The detection device for boiler pressure vessel leakage according to claim 1, characterized in that, A visual detection mechanism is provided on one side of the gas collection hood (100) for observing the degree of leakage.

6. The detection device for boiler pressure vessel leakage according to claim 5, characterized in that, The visual detection mechanism includes a cylinder (300), an observation window (301), a bayonet (302), a piston (303), a cavity (304), and a second return spring (305). The cylinder (300) is fixed to one side of the gas collection hood (100). The cylinder (300) is connected to the interior of the gas collection hood (100). An observation window (301) is provided on the outer wall of the cylinder (300). The observation window (301) is provided with scales of different colors. The cylinder (300) and the gas collection hood (100) are connected to each other. 0) A bayonet (302) is provided at the connection point. A cavity (304) is provided inside the cylinder (300). A piston (303) is slidably connected inside the cavity (304). The diameter of the bayonet (302) is smaller than the diameter of the piston (303), which restricts the piston (303). A second return spring (305) is provided between the cavity (304) and the piston (303). The second return spring (305) is used to apply a return force to the piston (303) toward the bayonet (302).

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