Leakage alarm device for compressed air

Abstract

The utility model discloses a leakage alarm device for compressed air, and relates to the technical field of air purification. The device comprises a header pipe, a connecting mechanism, a flow switch, a time delay relay and an audible and visual alarm, a cutting section is arranged on the header pipe, an upper pipe opening and a lower pipe opening are formed in the header pipe at the cutting section, the connecting mechanism comprises a lower tee joint, an upper sleeve and an outer fixing pipe, the lower tee joint is fixed at the end of the lower pipe opening, and the upper sleeve is fixed at the end of the upper pipe opening. And a telescopic hose is fixed on the inner side between the upper sleeve and the lower tee joint. Whether compressed air circulates in the compressed air header pipe or not is detected through the flow switch, normal air use when the pulse electromagnetic valve is powered on to work is eliminated through the time delay function of the time delay relay, and when compressed air leaks, the device can rapidly recognize leakage and give out sound-light alarm within a delay time, so that the leakage of the compressed air is prevented, and the leakage of the compressed air is prevented. The device is simple in circuit, easy to install and convenient to popularize and promote.

Description

Technical Field

[0001] This utility model belongs to the field of air purification technology, and in particular relates to a leakage alarm device for compressed air. Background Technology

[0002] The blast furnace blower's suction chamber purifies the intake oxygen-containing air through multiple sets of internal air filters to ensure the blower's safe and stable operation. After long-term use, a large amount of dust and foreign matter will accumulate on the surface of the air filters, requiring back-blowing cleaning using compressed air controlled by a pulse solenoid valve. Each suction chamber is equipped with dozens of air filters, each with a pulse solenoid valve. According to the interval set by the controller, all air filters are sequentially and cyclically purged to ensure the long-term operation of the air filters.

[0003] After prolonged use, pulse solenoid valves may experience diaphragm damage and sealing issues, leading to continuous leakage of large amounts of compressed air. If compressed air leaks are not detected in time, it will result in significant energy waste. Therefore, designing a device capable of detecting and alarming leaks is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a compressed air leakage alarm device. It detects whether there is compressed air flowing in the compressed air main pipe through a flow switch and uses the delay function of a time delay relay to exclude normal air use when the pulse solenoid valve is energized. When a compressed air leak occurs, the device can quickly identify the leak within a delay time and issue an audible and visual alarm. The device has a simple circuit, is easy to install, and is easy to popularize and promote.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a leakage alarm device for compressed air, including a main pipe, a connecting mechanism, a flow switch, a time delay relay, and an audible and visual alarm;

[0007] The main pipe is provided with a cut-off section, at which the main pipe forms an upper pipe opening and a lower pipe opening;

[0008] The connecting mechanism includes a lower tee, an upper sleeve, and an outer fixing tube;

[0009] The lower tee is fixed to the lower pipe end, the upper sleeve is fixed to the upper pipe end, a telescopic hose is fixed inside the upper sleeve and the lower tee, and the outer fixed tube is fixed outside the upper sleeve and the lower tee and sleeved on the outside of the telescopic hose.

[0010] The flow switch is installed on the end pipe of the tee away from the upper and lower pipe ports, and the time delay relay and the audible and visual alarm are electrically connected to the flow switch in sequence.

[0011] Furthermore, the upper sleeve and the lower tee are provided with inner steps on the inner side of the end near the upper pipe opening and the lower pipe opening, respectively, and the end faces of the upper pipe opening and the lower pipe opening are in contact with the inner steps of the upper sleeve and the lower tee.

[0012] Furthermore, it also includes a DC power supply, which is electrically connected between the flow switch and the audible and visual alarm.

[0013] Furthermore, the inner side of the opposite end of the upper sleeve and the lower tee is provided with an inner inlet, and the end of the telescopic hose is fixed in the inner inlet.

[0014] Furthermore, the inner diameter of the outer fixed tube is consistent with the outer diameter of the upper sleeve and the lower tee near the end of the upper sleeve.

[0015] Furthermore, the telescopic hose is a corrugated hose, and the telescopic stroke of the telescopic hose is greater than the length of the upper sleeve.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model detects whether there is compressed air flowing in the compressed air main pipe through a flow switch, and uses the delay function of the delay relay to eliminate the normal air consumption when the pulse solenoid valve is energized. When compressed air leakage occurs, the device can quickly identify the leakage within a delay time and issue an audible and visual alarm. The device has a simple circuit, is easy to install, and is easy to popularize and promote.

[0018] 2. This utility model, through the design of a novel connection mechanism, facilitates the installation of the flow switch and the main pipe, and enables rapid modification of existing pipelines, making it easy to operate. At the same time, the entire installation point has strong sealing and fastening properties, avoiding leakage problems caused by internal pipe pressure.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the upper pipe opening, upper sleeve, lower pipe opening, and lower tee connection of this utility model after half of them have been removed.

[0022] Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Flow switch, 2-Time delay relay, 3-Audible and visual alarm, 4-Upper pipe port, 5-Lower pipe port, 6-Lower tee, 7-Upper sleeve, 8-Outer fixed pipe, 9-Telescopic flexible hose, 10-DC power supply, 601-Inner step. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-2 As shown, this utility model is a leakage alarm device for compressed air, including a main pipe, a connecting mechanism, a flow switch 1, a time delay relay 2, and an audible and visual alarm 3;

[0027] The main pipe is equipped with a cut-off section, at which the main pipe forms an upper pipe opening 4 and a lower pipe opening 5;

[0028] The connecting mechanism includes a lower tee 6, an upper sleeve 7, and an outer fixed pipe 8;

[0029] The lower tee 6 is fixed to the end of the lower pipe opening 5, the upper sleeve 7 is fixed to the end of the upper pipe opening 4, and a telescopic hose 9 is fixed on the inner side between the upper sleeve 7 and the lower tee 6. The outer fixed pipe 8 is fixed on the outer side between the upper sleeve 7 and the lower tee 6 and is sleeved on the outside of the telescopic hose 9.

[0030] The flow switch 1 is installed on the end pipe of the tee away from the upper pipe port 4 and the lower pipe port 5. The time delay relay 2 and the audible and visual alarm 3 are electrically connected to the flow switch 1 in sequence.

[0031] Among them, such as Figure 1 As shown, the inner side of the upper sleeve 7 and the lower tee 6 near the upper pipe opening 4 and the lower pipe opening 5 is provided with an inner step 601, and the end faces of the upper pipe opening 4 and the lower pipe opening 5 are in contact with the inner step 601 of the upper sleeve 7 and the lower tee 6, respectively.

[0032] Among them, such as Figure 2 As shown, it also includes a DC power supply 10, which is electrically connected between the flow switch 1 and the audible and visual alarm 3.

[0033] Among them, such as Figure 1As shown, the inner side of the opposite end of the upper sleeve 7 and the lower tee 6 is provided with an inner inlet, and the end of the telescopic hose 9 is fixed in the inner inlet.

[0034] Among them, such as Figure 1 As shown, the inner diameter of the outer fixed pipe 8 is the same as the outer diameter of the upper sleeve 7 and the lower tee 6 near the end of the upper sleeve 7.

[0035] Among them, the telescopic hose 9 is a corrugated hose, and the telescopic stroke of the telescopic hose 9 is greater than the length of the upper sleeve 7.

[0036] The working principle of this utility model is as follows: When compressed air flows, the normally open contact of flow switch 1 closes, the coil of time delay relay 2 is energized, and the timing begins. During normal use, the pulse solenoid valve is energized for 1 second to purge air, and after 1 second, the pulse solenoid valve is de-energized and closes, and there is no compressed air flowing through the main compressed air pipe. The normally open contact of flow switch 1 is reset and opened. When compressed air leakage occurs, flow switch 1 will continuously detect compressed air flow, the normally open contact of flow switch 1 will remain closed, the coil of time delay relay 2 will remain energized, and the energization time of the coil of time delay relay 2 will be greater than the set delay time of 5 seconds, triggering the normally open contact of time delay relay 2 to close, thereby triggering the audible and visual alarm 3 to be energized and emitting an audible and visual alarm.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A leak alarm device for compressed air, comprising a main pipe, characterized in that: It also includes a connection mechanism, a flow switch (1), a time delay relay (2), and an audible and visual alarm (3); The main pipe is provided with a cut-off section, and the main pipe at the cut-off section forms an upper pipe opening (4) and a lower pipe opening (5). The connecting mechanism includes a lower tee (6), an upper sleeve (7), and an outer fixed tube (8); The lower tee (6) is fixed at the end of the lower pipe opening (5), the upper sleeve (7) is fixed at the end of the upper pipe opening (4), a telescopic hose (9) is fixed on the inner side between the upper sleeve (7) and the lower tee (6), and the outer fixed pipe (8) is fixed on the outer side between the upper sleeve (7) and the lower tee (6) and sleeved on the outside of the telescopic hose (9). The flow switch (1) is installed on the end pipe of the tee away from the upper pipe port (4) and the lower pipe port (5). The time delay relay (2) and the audible and visual alarm (3) are electrically connected to the flow switch (1) in sequence.

2. The compressed air leakage alarm device according to claim 1, characterized in that, The upper sleeve (7) and the lower tee (6) have an inner step (601) on the inner side of the end near the upper pipe opening (4) and the lower pipe opening (5), and the end faces of the upper pipe opening (4) and the lower pipe opening (5) are in contact with the inner step (601) of the upper sleeve (7) and the lower tee (6), respectively.

3. A leakage alarm device for compressed air according to claim 1, characterized in that, It also includes a DC power supply (10), which is electrically connected between the flow switch (1) and the audible and visual alarm (3).

4. A leakage alarm device for compressed air according to claim 1, characterized in that, The upper sleeve (7) and the lower tee (6) are both provided with an inner inlet on the opposite side of their respective ends, and the end of the telescopic hose (9) is fixed inside the inner inlet.

5. A leakage alarm device for compressed air according to claim 1, characterized in that, The inner diameter of the outer fixed tube (8) is the same as the outer diameter of the upper sleeve (7) and the lower tee (6) near the end of the upper sleeve (7).

6. A leakage alarm device for compressed air according to claim 1, characterized in that, The telescopic hose (9) is a corrugated hose, and the telescopic stroke of the telescopic hose (9) is greater than the length of the upper sleeve (7).

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