Leakage detection device for fire-fighting pipeline

Abstract

The utility model relates to the technical field of fire-fighting pipeline leakage detection, in particular to a fire-fighting pipeline leakage detection device. The fire-fighting pipeline leakage detection device comprises a host, a connecting cable is installed on the host, a pickup probe is fixedly installed at the other end of the connecting cable, and a pull-resisting part is installed on the connecting cable. The initial pulling force of the fire-fighting pipeline leakage detection device enables the connecting cable to be gradually lifted, the sliding cylinder is located at the highest position of the metal sleeve under the action of the spring, the steel wire is in a straight state, and then the metal sleeve slides upwards along the sliding cylinder and compresses the spring at the same time. The sliding and spring compression process can effectively absorb the pulling kinetic energy at the joint of the connecting cable and the pickup probe, so that the buffering effect is provided, and the possibility that instant impact force is transmitted to the joint of the connecting cable and the pickup probe is remarkably reduced.

Description

Technical Field

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

[0002] Firefighting pipes refer to pipe materials used in firefighting to connect firefighting equipment and instruments and to transport water, gas, or other media for firefighting. Due to long-term use, firefighting pipes are prone to leaks and water seepage, which requires timely inspection to avoid potential safety hazards. During the inspection process, the firefighting pipes in many residential areas are complexly distributed and partially buried underground, so inspectors typically use electronic leak detectors for inspection. The main components of an electronic leak detector include a microphone, a main unit, and headphones. The worker wears headphones, holds the main unit with one hand, and uses the other hand to lift the wire to continuously change the position of the microphone, thereby monitoring the pipe or the ground (for buried pipes) to capture the "hissing" sound or water flow sound emitted by the leak point.

[0003] However, in actual operation, the pickup is prone to the following problems because it needs to be constantly pulled and moved:

[0004] 1. The wire is loose or pulled out: If the operator is not skilled, the pickup may get stuck in an obstacle on the road during movement, or the wire may become loose or even completely pulled out from the host interface due to excessive movement; this will interrupt the detection process and affect detection efficiency.

[0005] 2. Risk of equipment damage: Frequent or violent pulling can also cause bending at the connection between the pickup and the cable (stress concentration point), breakage of internal wires, or loosening of interfaces, causing equipment damage. This not only increases maintenance costs but may also cause downtime and affect timely detection of fire safety.

[0006] Therefore, it is necessary to provide a new fire protection pipeline leakage detection device to solve the above technical problems. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides a fire protection pipeline leakage detection device.

[0008] The fire protection pipe leakage detection device provided by the present invention comprises a host, a connecting cable is installed on the host, and a sound pickup probe is fixedly installed on the other end of the connecting cable, and an earphone for receiving sound is also plugged into the host;

[0009] The connecting cable is provided with a pull-resistance component, which includes a metal sleeve, which is fixedly sleeved in an annular groove of the connecting cable, and a sliding cylinder is sleeved on the metal sleeve, and both side walls of the sliding cylinder are hinged with steel wires, and the ends of the two steel wires are detachably connected to the upper surface of the sound pickup probe housing;

[0010] A spring is sleeved on the metal sleeve, one end of the spring is fixedly connected to the inner ring wall of the fixing ring at the lower end of the metal sleeve, and the other end of the spring is fixedly connected to the lower cylinder surface of the slide cylinder.

[0011] Preferably, a threaded joint is fixedly installed at the end of the steel wire, and two symmetrically distributed threaded pipes are fixedly installed on the upper surface of the sound pickup probe housing, and the threaded pipes and the threaded joint match each other.

[0012] Preferably, both ends of the metal sleeve are fixedly mounted with fixing rings, and the fixing rings prevent the slide cylinder from slipping off the metal sleeve.

[0013] Preferably, a receiving tube coaxially arranged with the metal sleeve is fixedly mounted on the fixing ring at the lower end of the metal sleeve, and the compressed spring is received by the receiving tube.

[0014] Preferably, the metal sleeve is provided with two symmetrically distributed and axially arranged guide grooves, the inner cylinder surface of the slide cylinder is fixedly mounted with two symmetrically distributed limit blocks, and the limit blocks are inserted into the corresponding guide grooves and are slidably connected to the guide grooves.

[0015] Preferably, when the spring is compressed to the maximum extent, the length of the connecting cable between the end of the annular groove and the sound pickup probe is greater than the length of the steel wire, and the curved connecting cable between the end of the annular groove and the sound pickup probe constitutes a reserved line.

[0016] Preferably, a cable drum is installed on the connecting cable.

[0017] Compared with related technologies, the fire protection pipeline leakage detection device provided by the present invention has the following beneficial effects:

[0018] 1. The initial pulling force of the present invention gradually lifts the connecting cable. Under the action of the spring, the slide is located at the highest point of the metal sleeve and the steel wire is in a straight state. Then the metal sleeve slides up along the slide while compressing the spring. This sliding and spring compression process can effectively absorb the pulling kinetic energy at the connection between the connecting cable and the pickup probe, thereby providing a buffering effect and significantly reducing the possibility of instantaneous impact force being transmitted to the connection between the connecting cable and the pickup probe.

[0019] 2. In the present invention, when the connecting cable reaches the maximum allowable stretching length, the inspector cannot further pull the connecting cable, thereby completely avoiding the hidden danger of damage to the connection between the connecting cable and the pickup probe due to excessive pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a preferred embodiment of a fire protection pipe leakage detection device provided by the present invention;

[0021] Figure 2 for Figure 1 A schematic structural diagram of the annular groove provided for connecting cables is shown;

[0022] Figure 3 for Figure 1 A schematic structural diagram of the pull-resistance component shown;

[0023] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the metal sleeve in the pull-resistance component shown.

[0024] Numbers in the figure: 1. Main unit; 2. Connecting cable; 2a. Annular groove; 21. Reserved line; 3. Sound pickup probe; 31. Threaded pipe; 4. Earphone; 5. Pull-resistance component; 51. Metal sleeve; 51a. Guide groove; 511. Fixing ring; 512. Storage tube; 52. Slide; 521. Limit block; 53. Steel wire; 531. Threaded joint; 54. Spring; 6. Wire reel. DETAILED DESCRIPTION

[0025] 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.

[0026] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0027] See also Figures 1 to 4 An embodiment of the present invention provides a fire protection pipe leakage detection device, which includes a main unit 1, a sound pickup probe 3 and a pull-resistance component 5.

[0028] In the embodiments of the present invention, please refer to Figures 1 to 4 A connecting cable 2 is installed on the host 1, and a sound pickup probe 3 is fixedly installed on the other end of the connecting cable 2. An earphone 4 for receiving sound is also plugged into the host 1, and a wire reel 6 is installed on the connecting cable 2.

[0029] It should be noted that the host 1 , the sound pickup probe 3 and the earphone 4 constitute an electronic leak detector, which enables the inspector to perform sound detection on the fire protection pipe, and the lifting drum 6 facilitates the inspector to lift and put down the sound pickup probe 3 .

[0030] In the embodiments of the present invention, please refer to Figures 1 to 4 , a pull-resistance component 5 is installed on the connecting cable 2, and the pull-resistance component 5 includes a metal sleeve 51, the metal sleeve 51 is fixedly sleeved in the annular groove 2a opened in the connecting cable 2, and a sliding cylinder 52 is sleeved on the metal sleeve 51, and both side walls of the slide cylinder 52 are hinged with steel wires 53, and the ends of the two steel wires 53 are detachably connected to the upper surface of the shell of the sound pickup probe 3. Specifically, a threaded joint 531 is fixedly installed at the end of the steel wire 53, and two symmetrically distributed threaded pipes 31 are fixedly installed on the upper surface of the shell of the sound pickup probe 3. The threaded pipe 31 and the threaded joint 531 match each other, and the threaded joint 531 is inserted into the threaded pipe 31 and threadedly connected;

[0031] A fixing ring 511 is fixedly mounted on both ends of the metal sleeve 51 to prevent the slide 52 from slipping off the metal sleeve 51. A spring 54 is sleeved on the metal sleeve 51. One end of the spring 54 is fixedly connected to the inner ring wall of the fixing ring 511 at the lower end of the metal sleeve 51, and the other end of the spring 54 is fixedly connected to the lower surface of the slide 52. A receiving tube 512 is fixedly mounted on the fixing ring 511 at the lower end of the metal sleeve 51 to accommodate the compressed spring 54.

[0032] When the spring 54 is compressed to the maximum extent, the length of the connecting cable 2 between the end of the annular groove 2a and the sound pickup probe 3 is greater than the length of the steel wire 53, and the curved connecting cable 2 between the end of the annular groove 2a and the sound pickup probe 3 constitutes a reserved line 21.

[0033] It should be noted that when the inspector drives the connecting cable 2 to lift the pickup probe 3 from the ground through the lifting drum 6,

[0034] A. The initial pulling force gradually lifts the connecting cable 2, and the slide 52 is located at the highest point of the metal sleeve 51 under the action of the spring 54, and the steel wire 53 is in a straight state;

[0035] B. The metal sleeve 51 then slides up along the slide 52 while compressing the spring 54. This sliding and spring 54 compression process can effectively absorb the pulling kinetic energy at the connection between the connecting cable 2 and the sound pickup probe 3, thereby providing a buffering effect and significantly reducing the possibility of instantaneous impact force being transmitted to the connection between the connecting cable 2 and the sound pickup probe 3.

[0036] When the sound pickup probe 3 is stuck, if the pulling force continues to increase, the slide 52 slides to the bottom of the metal sleeve 51 and is blocked by the storage tube 512, and the steel wire 53 is straightened and tightened. Since the design ensures that the reserved line 21 is longer than the length of the steel wire 53, the connection between the sound pickup probe 3 and the connecting cable 2 will not be subjected to direct pulling force, and the maximum allowable stretching length is reached at this time. The inspector can no longer pull the connecting cable 2 further, thereby completely avoiding the hidden danger of damage to the connection between the connecting cable 2 and the sound pickup probe 3 due to excessive pulling.

[0037] Furthermore, two symmetrically distributed and axially arranged guide grooves 51a are provided on the metal sleeve 51, and two symmetrically distributed limit blocks 521 are fixedly installed on the inner cylinder surface of the slide 52. The limit blocks 521 are inserted into the corresponding guide grooves 51a and are slidably connected to the guide grooves 51a, thereby preventing the slide 52 from deflecting when sliding up and down along the metal sleeve 51.

[0038] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0039] 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 pipe leakage detection device, comprising a main unit (1), a connecting cable (2) installed on the main unit (1), a sound pickup probe (3) fixedly installed at the other end of the connecting cable (2), and an earphone (4) for receiving sound also plugged into the main unit (1); Its characteristics are: The connecting cable (2) is provided with a pull-resistance component (5), the pull-resistance component (5) comprising a metal sleeve (51), the metal sleeve (51) being fixedly sleeved in an annular groove (2a) provided on the connecting cable (2), and a sliding cylinder (52) being sleeved on the metal sleeve (51), both side walls of the sliding cylinder (52) being hinged with steel wires (53), and the ends of the two steel wires (53) being detachably connected to the upper surface of the shell of the pickup probe (3); A spring (54) is sleeved on the metal sleeve (51), one end of the spring (54) is fixedly connected to the inner ring wall of the fixing ring (511) at the lower end of the metal sleeve (51), and the other end of the spring (54) is fixedly connected to the lower cylinder surface of the slide cylinder (52).

2. The fire protection pipe leakage detection device according to claim 1, characterized in that: A threaded joint (531) is fixedly mounted on the end of the steel wire (53), and two symmetrically distributed threaded pipes (31) are fixedly mounted on the upper surface of the housing of the sound pickup probe (3), and the threaded pipes (31) and the threaded joints (531) match each other.

3. The fire protection pipe leakage detection device according to claim 1, characterized in that: Both ends of the metal sleeve (51) are fixedly mounted with fixing rings (511), and the fixing rings (511) prevent the slide cylinder (52) from slipping off the metal sleeve (51).

4. The fire protection pipe leakage detection device according to claim 3, characterized in that: A receiving tube (512) coaxially arranged with the metal sleeve (51) is fixedly mounted on the fixing ring (511) at the lower end of the metal sleeve (51), and the compressed spring (54) is received by the receiving tube (512).

5. The fire protection pipe leakage detection device according to claim 1, characterized in that: The metal sleeve (51) is provided with two symmetrically distributed and axially arranged guide grooves (51a), and the inner cylinder surface of the slide cylinder (52) is fixedly mounted with two symmetrically distributed limit blocks (521), and the limit blocks (521) are inserted into the corresponding guide grooves (51a) and are slidably connected to the guide grooves (51a).

6. The fire protection pipe leakage detection device according to claim 1, characterized in that: When the spring (54) is compressed to the maximum extent, the length of the connecting cable (2) between the end of the annular groove (2a) and the sound pickup probe (3) is greater than the length of the steel wire (53), and the curved connecting cable (2) between the end of the annular groove (2a) and the sound pickup probe (3) forms a reserved line (21).

7. The fire protection pipe leakage detection device according to claim 1, characterized in that: A cable drum (6) is installed on the connecting cable (2).

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