Airtightness detection equipment for fire-fighting pipeline

Abstract

The utility model relates to the technical field of fire-fighting pipeline detection, in particular to fire-fighting pipeline air tightness detection equipment. The fire-fighting pipeline air tightness detection equipment comprises an air inlet cylinder and a detection cylinder which are respectively arranged at pipe heads at two ends of a fire-fighting pipeline, the air inlet cylinder is provided with a one-way air inlet valve, and the detection cylinder is provided with an acousto-optic early warning device and a trigger part used for starting and stopping the acousto-optic early warning device for prompting. According to the fire-fighting pipeline air tightness detection device, the one-way air inlet valve is utilized to inflate the fire-fighting pipeline, the trigger part in the detection cylinder is matched with the acousto-optic early warning device to detect the air pressure change in the pipeline, if the air tightness of the pipeline is good, the acousto-optic early warning device operates continuously, and if the air leakage of the pipeline occurs, the acousto-optic early warning device stops operating. And the result is visual and clear.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection pipeline detection, in particular to a fire protection pipeline air tightness detection device. Background Art

[0002] The airtightness of firefighting pipes is crucial in firefighting systems. It directly affects whether firefighting water can be smoothly and effectively delivered to the designated location in the event of a fire, thereby controlling the fire and minimizing losses. Currently, while there are various methods available on the market for testing the airtightness of firefighting pipes, most suffer from complex procedures, low testing efficiency, or inaccurate test results. For example, while traditional water pressure testing is intuitive, it consumes a large amount of water resources and is difficult to handle the residual moisture in the pipes after testing. Furthermore, some electronic testing equipment can be significantly affected by environmental factors, resulting in unstable test results.

[0003] Therefore, it is necessary to provide a new fire protection pipeline air tightness detection equipment to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a fire protection pipeline air tightness detection device.

[0005] The fire protection pipeline air tightness detection device provided by the utility model comprises an air intake cylinder and a detection cylinder respectively arranged at the pipe ends of the fire protection pipeline, the air intake cylinder is equipped with a one-way air intake valve, and the detection cylinder is equipped with an audible and visual warning device and a trigger component for opening and closing the audible and visual warning device to provide prompts;

[0006] The trigger component includes a piston disk, which is slidably installed in the detection cylinder, and a contact is fixedly installed on the inner disk wall of the piston disk. A contact switch is fixedly installed on the inner end surface of the detection cylinder, and the contact switch is electrically connected to the sound and light warning device through a wire.

[0007] Preferably, the trigger component further includes a spring, which is arranged in the detection cylinder, one end of the spring is fixedly connected to the inner disk surface of the piston disk, and the other end of the spring is fixedly connected to the inner end surface of the detection cylinder.

[0008] Preferably, the air intake cylinder and the detection cylinder are both installed with locking tube assemblies near the cylinder openings, and the air intake cylinder and the detection cylinder are fixedly connected to the pipe heads at both ends of the fire protection pipe through the locking tube assemblies.

[0009] Preferably, the lock tube assembly includes an annular airbag and an air nozzle, the annular airbag is installed in an annular groove opened in the inner wall of the air inlet cylinder and / or the detection cylinder, and the outer ring wall of the annular airbag is fixedly connected to the inner groove wall of the annular groove, and an air nozzle is fixedly installed on the annular airbag, and the air nozzle extends out of the air inlet cylinder and / or the detection cylinder through the through hole opened in the air inlet cylinder and / or the detection cylinder.

[0010] Preferably, an abutment ring is fixedly mounted on the inner cylinder wall of the air inlet cylinder and the detection cylinder, and the abutment ring is located at the rear side of the annular airbag.

[0011] Preferably, an air release valve is installed on the detection cylinder, and the air release valve is located between the annular airbag and the abutment ring.

[0012] Compared with related technologies, the fire protection pipeline air tightness detection equipment provided by the present invention has the following beneficial effects:

[0013] 1. This utility model uses a one-way air inlet valve to inflate the fire protection pipe. The trigger component in the detection tube cooperates with the sound and light warning device to detect the pressure change in the pipe. If the pipe is airtight, the sound and light warning device will continue to operate. If the pipe leaks, the sound and light warning device will stop operating. The result is intuitive and clear.

[0014] 2. The utility model utilizes a locking tube assembly to install the air intake cylinder and the detection cylinder at both end pipe heads of the fire protection pipe, thereby structurally reducing the hidden dangers of connection failure or sealing failure between the two due to vibration of the fire protection pipe, and effectively avoiding the problem of failure of the fire protection pipe air tightness test due to air leakage at the connection between the fire protection pipe and the air intake cylinder and / or the detection cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a preferred embodiment of the fire protection pipeline air tightness detection equipment provided by the present utility model;

[0016] Figure 2 for Figure 1 A schematic cross-sectional structural diagram of the detection tube shown;

[0017] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the air intake cylinder shown.

[0018] Numbers in the figure: 1. Air intake cylinder; 11. One-way air intake valve; 2. Detection cylinder; 21. Air release valve; 3. Sound and light warning device; 4. Trigger component; 41. Piston disc; 42. Contact; 43. Contact switch; 44. Spring; 5. Abutment ring; 6. Lock tube assembly; 61. Annular airbag; 62. Air nozzle. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0021] See also Figures 1 to 3 The embodiment of the present invention provides a fire protection pipe air tightness detection device, which includes an air inlet cylinder 1 and a detection cylinder 2, an audible and visual warning device 3 and a trigger component 4, which are respectively arranged at the pipe heads at both ends of the fire protection pipe.

[0022] In the embodiments of the present invention, please refer to Figures 1 to 3 , the air intake cylinder 1 and the detection cylinder 2 are both installed with a locking tube assembly 6 near the cylinder mouth, and the air intake cylinder 1 and the detection cylinder 2 are fixedly connected to the two end pipe heads of the fire protection pipe through the locking tube assembly 6, and the locking tube assembly 6 includes an annular airbag 61 and an air nozzle 62, the annular airbag 61 is installed in the annular groove opened in the inner cylinder wall of the air intake cylinder 1 and / or the detection cylinder 2, and the outer ring wall of the annular airbag 61 is fixedly connected to the inner groove wall of the annular groove, and the air nozzle 62 is fixedly installed on the annular airbag 61, and the air nozzle 62 extends out of the air intake cylinder 1 and / or the detection cylinder 2 through the through hole opened in the air intake cylinder 1 and / or the detection cylinder 2, and abutment ring 5 is fixedly installed on the inner cylinder wall of the air intake cylinder 1 and the detection cylinder 2, and the abutment ring 5 is located on the rear side of the annular airbag 61.

[0023] It should be noted that before performing an air tightness test on the fire protection pipe, the air inlet tube 1 and the detection tube 2 are respectively installed on the pipe heads at both ends of the fire protection pipe through the built-in locking tube components 6. The specific operation is as follows:

[0024] The pipe head of the fire hose is inserted into the air intake cylinder 1 and abutted against the abutment ring 5. Then, the annular airbag 61 is inflated after the air pump is connected to the air nozzle 62, so that the annular airbag 61 is rapidly expanded and extended. The expanded annular airbag 61 can quickly fill the gap between the fire hose and the air intake cylinder 1 and firmly press the pipe head of the fire hose, so that the fire hose can be stably and firmly inserted into the air intake cylinder 1. Similarly, the detection cylinder 2 is installed on the other end pipe head of the fire hose in the same way; since the expanded annular airbag 61 is an elastic structure, the hidden danger of connection failure or sealing failure between the two due to vibration of the fire hose is structurally reduced, effectively avoiding the problem of failure of the fire hose air tightness detection due to air leakage at the connection between the fire hose and the air intake cylinder 1 and / or the detection cylinder 2, and reducing the problem of misjudgment of the fire hose air tightness due to air leakage at the connection.

[0025] In this embodiment: In order to facilitate the staff to monitor the inflation pressure of the annular airbag 61 and avoid poor sealing due to insufficient inflation or damage to the annular airbag 61 due to excessive inflation, a small pressure gauge (not shown in the figure) can be installed near the air nozzle 62 of the air inlet cylinder 1 and the detection cylinder 2.

[0026] It is worth noting that the air nozzle 62 in the present application can adopt a valve core structure similar to that of a bicycle tire (such as an American valve or a Presta valve). When the annular air bag 61 is exhausted, the air can be quickly exhausted by pressing the core rod inside the air nozzle 62 with a valve core tool or by piercing the air nozzle 62 with a needle. Then, the air intake cylinder 1 or the detection cylinder 2 can be easily removed from the pipe head of the fire hose. The operation is simple and convenient.

[0027] In the embodiments of the present invention, please refer to Figures 1 to 3 The air intake cylinder 1 is provided with a one-way air intake valve 11, the detection cylinder 2 is provided with an audible and visual warning device 3 and a trigger component 4 for opening and closing the audible and visual warning device 3 for prompting;

[0028] The trigger component 4 includes a piston disk 41, which is slidably installed in the detection cylinder 2, and a contact 42 is fixedly installed on the inner disk wall of the piston disk 41. A contact switch 43 is fixedly installed on the inner end surface of the detection cylinder 2, and the contact switch 43 is electrically connected to the sound and light warning device 3 through a wire. The trigger component 4 also includes a spring 44, which is arranged in the detection cylinder 2, one end of the spring 44 is fixedly connected to the inner disk surface of the piston disk 41, and the other end of the spring 44 is fixedly connected to the inner end surface of the detection cylinder 2.

[0029] It should be noted that: after the air intake cylinder 1 and the detection cylinder 2 are installed on the pipe heads on both sides of the fire protection pipe, the air pump is connected to the one-way air intake valve 11 to inflate the air intake cylinder 1. As the gas increases, the piston disc 41 can be driven to slide toward the tail of the detection cylinder 2 and compress the spring 44 until the contact 42 abuts against the contact switch 43, and the sound and light warning device 3 starts to operate. At this time, turn off the air pump and let it stand for a period of time (5-10 minutes). If the sound and light warning device 3 is in operation during this period, it means that the fire protection pipe is in good condition and there is no air leakage. If the air tightness of the fire protection pipe is not good, the air pressure in the fire protection pipe will decrease after the fire protection pipe leaks, so that the piston disc 41 is driven by the elastic force of the spring 44 to slide toward the mouth of the detection cylinder 2, so the contact 42 no longer abuts the contact switch 43, causing the sound and light warning device 3 to stop operating.

[0030] Therefore, this application uses a one-way air inlet valve 11 to inflate the fire protection pipe, and detects the air pressure changes in the pipe through the trigger component 4 in the detection tube 2 in conjunction with the sound and light warning device 3. If the air tightness of the pipe is good, the sound and light warning device 3 will continue to operate. If the pipe leaks, the sound and light warning device 3 will stop operating, and the result is intuitive and clear.

[0031] Among them, the detection tube 2 is equipped with a relief valve 21, and the relief valve 21 is located between the annular airbag 61 and the abutting ring 5. When the detection is completed, the relief valve 21 is opened to discharge the detection gas in the fire protection pipe.

[0032] Among them, in order to avoid the risk of spring 44 being in a compressed state for a long time or suffering fatigue failure during frequent testing cycles, this application selects spring materials with high fatigue life (such as high-quality piano wire) and considers sufficient fatigue safety factors during design. The maintenance procedures can stipulate the periodic inspection or replacement cycle of spring 44.

[0033] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fire protection pipeline air tightness detection device, comprising an air inlet cylinder (1) and a detection cylinder (2) respectively arranged at the ends of the fire protection pipeline, characterized in that: The air intake cylinder (1) is equipped with a one-way air intake valve (11), and the detection cylinder (2) is equipped with an audible and visual warning device (3) and a trigger component (4) for opening and closing the audible and visual warning device (3) to provide a prompt; The trigger component (4) includes a piston disc (41), the piston disc (41) is slidably mounted in the detection cylinder (2), and a contact (42) is fixedly mounted on the inner disc wall of the piston disc (41), a contact-type switch (43) is fixedly mounted on the inner end surface of the detection cylinder (2), and the contact-type switch (43) is electrically connected to the sound and light warning device (3) through a wire.

2. The fire protection pipe air tightness detection equipment according to claim 1, characterized in that: The trigger component (4) further comprises a spring (44), which is arranged in the detection cylinder (2), one end of the spring (44) is fixedly connected to the inner disk surface of the piston disk (41), and the other end of the spring (44) is fixedly connected to the inner end surface of the detection cylinder (2).

3. The fire protection pipeline air tightness detection equipment according to claim 1, characterized in that: The air intake cylinder (1) and the detection cylinder (2) are both provided with a locking tube assembly (6) near the cylinder opening. The air intake cylinder (1) and the detection cylinder (2) are respectively fixedly connected to the pipe heads at both ends of the fire protection pipe via the locking tube assembly (6).

4. The fire protection pipeline air tightness detection equipment according to claim 3, characterized in that: The lock tube assembly (6) includes an annular airbag (61) and an air nozzle (62), wherein the annular airbag (61) is installed in an annular groove provided on the inner wall of the air inlet cylinder (1) and / or the detection cylinder (2), and the outer ring wall of the annular airbag (61) is fixedly connected to the inner wall of the annular groove, and the air nozzle (62) is fixedly installed on the annular airbag (61), and the air nozzle (62) extends out of the air inlet cylinder (1) and / or the detection cylinder (2) through a through hole provided on the air inlet cylinder (1) and / or the detection cylinder (2).

5. The fire protection pipeline air tightness detection equipment according to claim 4, characterized in that: An abutment ring (5) is fixedly mounted on the inner cylinder wall of the air inlet cylinder (1) and the detection cylinder (2), and the abutment ring (5) is located at the rear side of the annular airbag (61).

6. The fire protection pipeline air tightness detection equipment according to claim 5, characterized in that: The detection cylinder (2) is provided with an air release valve (21), and the air release valve (21) is located between the annular airbag (61) and the abutment ring (5).

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