Pressure detection equipment and fire hydrant state monitoring system

By introducing a camera and an automatic cleaning module into the pressure testing equipment, the problem of inaccurate detection at the connection point was solved, enabling accurate monitoring and maintenance of the fire hydrant's condition.

CN223682964UActive Publication Date: 2025-12-19FUJIAN NINGDE NUCLEAR POWER
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202423150538.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2025-12-19
Estimated Expiration
2034-12-19

AI Technical Summary

Technical Problem

The connection points of pressure testing equipment are prone to problems such as incomplete connections or damage, which can lead to inaccurate test results and affect the testing effectiveness of fire hydrants.

Method used

A pressure detection device was designed, comprising a camera and a cleaning module. The camera is used to monitor the status of the connection in real time, and the cleaning module automatically cleans the camera surface through a wiping component and a drive component to ensure clear images. At the same time, a fluid sensor is used to detect leaks at the connection.

Benefits of technology

By monitoring the status of the connection points in real time with a camera and automatically cleaning them, the accuracy and reliability of the test results are ensured, maintenance efficiency is improved, and misjudgments and misoperations are reduced.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223682964U_ABST
    Figure CN223682964U_ABST
Patent Text Reader

Abstract

The utility model relates to pressure detection equipment and a fire hydrant state monitoring system, and the pressure detection equipment comprises a device body and a connecting pipeline of which one end is connected with the device body; the pressure detection equipment further comprises a camera arranged on one side of the joint of the device body and the connecting pipeline, and a cleaning module used for cleaning the surface of the camera. The cleaning module comprises a wiping assembly arranged on one side of the camera, and the wiping assembly comprises cleaning cloth; the cleaning module further comprises a driving assembly. The driving assembly comprises a telescopic arm connected with the wiping assembly and a first driving motor driving the telescopic arm to stretch out and draw back. The telescopic arm drives the wiping assembly to move to the position of the camera to wipe the camera and drives the wiping assembly to return to the original position through stretching out and drawing back. According to the pressure detection equipment, the detection effect of the pressure detection equipment can be ensured.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure detection equipment field especially, relate to a pressure detection equipment and fire hydrant state monitoring system. BACKGROUND

[0002] Generally, a pressure detection equipment is assembled on the fire hydrant for detecting the water pressure inside the fire hydrant, thereby supervising the fire hydrant and ensuring that the fire hydrant can provide sufficient pressure water resources at the critical time.

[0003] Among them, the connecting place of the device body of the pressure detection equipment and the connecting pipeline is prone to problems such as not in place, damage, etc., which leads to the pressure value obtained by the pressure detection device is not accurate, affecting the detection effect of the fire hydrant. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model lies in providing a pressure detection equipment and fire hydrant state monitoring system.

[0005] The technical scheme adopted by the utility model to solve its technical problem is: a pressure detection equipment is constructed, which comprises a device body and a connecting pipeline connected with one end of the device body;

[0006] The pressure detection equipment further comprises a camera arranged at one side of the connecting place of the device body and the connecting pipeline, and a cleaning module for cleaning the surface of the camera;

[0007] The cleaning module comprises a wiping assembly arranged at one side of the camera, and the wiping assembly comprises a wiping cloth;

[0008] The cleaning module further comprises a driving assembly; the driving assembly comprises a telescopic arm connected with the wiping assembly, and a first driving motor for driving the telescopic arm to extend and retract; the telescopic arm drives the wiping assembly to move to the position of the camera to wipe the camera and drives the wiping assembly to return to the original position through extension and retraction.

[0009] In some embodiments, the pressure detection equipment further comprises a fluid sensor arranged at one side of the connecting place for feeding back the leakage condition of the connecting place.

[0010] In some embodiments, the surface of the device body connected with the connecting pipeline is provided with a first accommodating groove recessed inwardly; the fluid sensor is installed in the first accommodating groove; the camera is arranged at the outward side of the fluid sensor and protrudes from the surface of the device body connected with the connecting pipeline.

[0011] In some embodiments, the fluid sensor comprises a water immersion sensor.

[0012] In some embodiments, the mirror surface of the camera is a spherical surface.

[0013] The wiping assembly further comprises an arc-shaped plate for covering the camera, and the cleaning cloth is attached to the inner periphery of the arc-shaped plate.

[0014] The wiping assembly further comprises a second driving motor for driving the rotation of the arc-shaped plate; the arc-shaped plate rotates to cause the cleaning cloth to wipe the camera in a rotating manner.

[0015] In some embodiments, the wiping assembly further comprises a mounting base, and a recess is formed in the surface of the mounting base opposite to the camera; the arc-shaped plate and the second driving motor are arranged in the recess.

[0016] One end of the telescopic arm is connected to the mounting base, and the other end of the telescopic arm is connected to the first driving motor.

[0017] In some embodiments, the camera is a 360-degree infrared camera.

[0018] In some embodiments, a second accommodating groove is formed in the surface of the device body connected to the connecting pipeline, and the second accommodating groove is arranged on the side of the camera away from the connecting position; the wiping assembly and the driving assembly are accommodated in the second accommodating groove.

[0019] In some embodiments, the telescopic arm comprises a first rod portion and a second rod portion connected to the first rod portion; the first rod portion is arranged to be telescopic in the longitudinal direction to drive the wiping assembly to reciprocate in the longitudinal direction; and the second rod portion is arranged to be telescopic in the horizontal direction to drive the wiping assembly to reciprocate in the horizontal direction.

[0020] The utility model further constructs a fire hydrant state monitoring system, including controller, and above-mentioned pressure detection equipment;The pressure detection equipment is used to install on fire hydrant, and is connected with the inside of fire hydrant through connecting pipeline;The controller is connected with pressure detection equipment, to receive pressure feedback information, and the picture information of connecting position.

[0021] The utility model has the following beneficial effects: the pressure detection equipment acquires the situation of the connecting position of the device body and the connecting pipeline through the camera, determines the integrity of the connecting position, and ensures the detection effect of the pressure detection equipment. At the same time, the mirror surface of the camera is cleaned through the cleaning module, the visibility of the picture captured by the camera is ensured, and the detection of the pressure detection equipment is also facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described below in combination with the drawings and examples, and the drawings are as follows:

[0023] Figure 1 It is the structural schematic diagram of the utility model's pressure detection equipment installed on the fire hydrant;

[0024] Figure 2 It is the structural schematic diagram of the device body bottom position in an embodiment of the utility model;

[0025] Figure 3 It is Figure 2 The enlarged view of the structure framed by A frame in figure.

[0026] Reference signs:

[0027] Pressure detection equipment 100;Device body 1;First accommodating groove 11;Second accommodating groove 12;Connecting pipeline 2;Connecting place 21;Camera 3;Cleaning module 4;Wiping assembly 41;Wipe 411;Arc plate 412;Second drive motor 413;Mounting seat 414;Groove 4141;Drive assembly 42;Telescopic arm 421;First rod part 4211;Second rod part 4212;Fluid sensor 5;Throat pipe 6;Fire hydrant 200. Specific embodiments

[0028] In order to have more clear understanding of the technical features, purposes and effects of the utility model, the specific embodiments of the utility model will be described in detail by referring to the drawings. In the following description, it should be understood that the directions or position relations indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" are based on the directions or position relations shown in the drawings, the particular directions are constructed and operated, and are only for the convenience of describing the technical scheme, and cannot be understood as indicating that the indicated device or element must have the particular direction, so it cannot be understood as the limitation of the utility model.

[0029] It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intervening elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical solutions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the present application, such as specific system structures, technologies, etc. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits and methods are omitted to avoid unnecessary details that hinder the description of the present application.

[0031] For reference Figure 1 The present application constructs a pressure detection device 100, which can include a device body 1, and a connecting pipeline 2 connected to one end of the device body 1. The other end of the connecting pipeline 2 can be connected to a preset device to detect the pressure condition of the preset device.

[0032] For example, when the preset device is a fire hydrant 200 (for reference Figure 1 ), the other end of the connecting pipeline 2 can be connected to the inside of the fire hydrant 200 to detect the internal water pressure of the fire hydrant 200. In addition, the preset device can also be a pipeline system and the like, which will not be described one by one.

[0033] In addition, it should be noted here that the structure part related to the realization of the pressure detection device 1 can refer to the related technology, which will not be described in detail.

[0034] Please continue to read Figure 2The pressure testing device 100 also includes a camera 3 installed on one side of the connection 21 between the device body 1 and the connecting pipe 2. The camera 3 is used to capture the scene at the connection 21 so as to detect the fault at the first time and ensure the accuracy of the pressure test results. At the same time, the cause of the fault can be known through the scene, and the fault can be reacted to quickly and the maintenance efficiency can be improved.

[0035] Secondly, since malfunctions at the connection 21 between the device body 1 and the connecting pipe 2 are often accompanied by fluid leakage, and external factors such as dust pollution can easily cause the surface of the camera 3 to become dirty, resulting in blurry images, obstruction by dirt, etc., this pressure detection device 100 also includes a cleaning module 4 for cleaning the surface of the camera 3.

[0036] like Figure 2 As shown, the cleaning module 4 may include a wiping assembly 41 disposed on one side of the camera 3, and a drive assembly 42 for moving the wiping assembly 41. The wiping assembly 41 includes a cloth 411 for wiping the camera 3. The drive assembly 42 includes a telescopic arm 421 connected to the wiping assembly 41, and a first drive motor (not shown) for extending and retracting the telescopic arm 421; the telescopic arm 421 can move the wiping assembly 41 to the position of the camera 3 to wipe the camera 3 by extending and retracting, and after wiping is completed, it can drive the wiping assembly 41 back to its original position to avoid obstructing the camera 3.

[0037] It should be noted that the principle of the first drive motor driving the telescopic arm 421 to extend and retract can be found in relevant technologies, and will not be elaborated here.

[0038] Alternatively, you can refer to Figure 2 The pressure detection device 100 may also include a fluid sensor 5 disposed on one side of the connection 21 for feedback on leakage at the connection 21. Depending on the type of fluid being detected, the fluid sensor 5 may be a water immersion sensor or a pressure sensor.

[0039] Please read back Figure 1 The following description uses an illustrated embodiment. In this embodiment, the pressure detection device 100 is applied to the fire hydrant 200. The device body 1 can be fixed to the circumference of the fire hydrant 200 via a connector such as a hose 6. One end of the connecting pipe 2 can be connected to the bottom of the device body 1, and the other end is connected to the interior of the fire hydrant 200.

[0040] Continue reading below Figure 2 A first recessed receiving groove 11 may be provided at the bottom of the device body 1; the water immersion sensor is installed in the first receiving groove 11; the camera 3 is located on the side of the water immersion sensor facing outward and protrudes from the surface of the device body 1 connected to the connecting pipe 2.

[0041] It can be understood that the first accommodating groove 11 is formed at the surface of the device body 1 connecting the connecting pipeline 2. Since water mist will splash out when the connection 21 fails, the water immersion sensor can be successfully detected even if it is arranged in the groove. Of course, the sensing surface of the water immersion sensor can also be arranged protruding from the first accommodating groove 11 to facilitate sensing of water mist.

[0042] In addition, a second accommodating groove 12 recessed inward can be arranged at the bottom of the device body 1, and the second accommodating groove 12 is arranged on the side of the camera 3 away from the connection 21; the wiping assembly 41 and the driving assembly 42 can be accommodated in the second accommodating groove 12.

[0043] It can be understood that the second accommodating groove 12 is formed at the surface of the device body 1 connecting the connecting pipeline 2. By accommodating the wiping assembly 41 in the second accommodating groove 12, the camera 3 and the light can be prevented from being blocked.

[0044] Continuing to refer to Figure 3 , the telescopic arm 421 of the driving assembly 42 can include a first rod portion 4211 and a second rod portion 4212 connected with the first rod portion 4211, the first rod portion 4211 is arranged in telescopic mode in the longitudinal direction to drive the wiping assembly 41 to reciprocate in the longitudinal direction; the second rod portion 4212 is arranged in telescopic mode in the horizontal direction to drive the wiping assembly 41 to reciprocate in the horizontal direction.

[0045] The first rod portion 4211 can be arranged in the longitudinal direction, and the telescopic end thereof is connected with the fixed end of the second rod portion 4212 arranged in the horizontal direction, and the telescopic end of the second rod portion 4212 is connected to the wiping assembly 41.

[0046] It can be understood that when wiping is needed, the wiping assembly 41 can be first moved downward by the extension of the first rod portion 4211 to extend out of the second accommodating groove 12 and move to a position below the camera 3. Then, the wiping assembly 41 can be horizontally moved to one side of the camera 3 by the extension of the second rod portion 4212, and finally the cloth 411 can be located directly below the camera 3 and can be in contact with the camera 3. After wiping is completed, the telescopic arm 421 can perform the above operation in reverse to collect the wiping assembly 41 into the second accommodating groove 12.

[0047] In the illustrated embodiment, the camera 3 can be a 360° infrared camera, and the mirror surface thereof is spherical. As shown in Figure 3 , the wiping assembly 41 can include an arc-shaped plate 412 for covering the camera 3, and the cloth 411 is attached to the inner periphery of the arc-shaped plate 412; the wiping assembly 41 further includes a second driving motor 413 for driving the arc-shaped plate 412 to rotate; the arc-shaped plate 412 rotates to make the cloth 411 wipe the camera 3 in a rotating manner.

[0048] The arc-shaped plate 412 can be a semi-sphere with a size matching that of the camera 3. The opening of the arc-shaped plate 412 is upwardly arranged; the second driving motor 413 can be arranged below the arc-shaped plate 412, and the rotating shaft of the second driving motor 413 can be longitudinally arranged and connected with the center point of the bottom of the arc-shaped plate 412.

[0049] It can be understood that, through the extension of the telescopic arm 421, the arc-shaped plate 412 can first move below the camera 3 and then rise, so that the cloth 411 in the arc-shaped plate 412 can contact the surface of the camera 3. Then, the second driving motor 413 is started to drive the arc-shaped plate 412 to rotate with the longitudinal direction as the rotating shaft, so as to complete the wiping of the camera 3.

[0050] Secondly, it also needs to be explained that the operation timing of the first driving motor can be triggered by the water immersion sensor or triggered by remote control. Since the position of the wiping assembly 41 in the second accommodating groove 12 is fixed, and the position of the camera 3 is also fixed, the telescopic amount required by the telescopic arm 421 when the wiping assembly 41 moves to the camera 3 can be measured in advance, and the first driving motor is accurately driven.

[0051] The operation timing of the second driving motor 413 can be triggered when the surface of the camera 3 is detected by the pressure sensor arranged in the inner circumferential surface of the arc-shaped plate 412. It can be understood that the pressure sensor is only a means to ensure that the arc-shaped plate 412 can rotate; actually, since the position of the wiping assembly 41 in the second accommodating groove 12 and the position of the camera 3 are fixed, the second driving motor 413 can also operate after the first driving motor completes the operation.

[0052] Continuing to refer to Figure 3 The wiping assembly 41 can further include a mounting seat 414, the top surface of the mounting seat 414 is provided with an inwardly recessed groove 4141; the arc-shaped plate 412 and the second driving motor 413 are arranged in the groove 4141; one end of the telescopic arm 421 is connected with the mounting seat 414, and the other end is connected with the first driving motor.

[0053] The telescopic end of the second rod portion 4212 of the telescopic arm 421 can be inserted into the mounting seat 414 and fixed in the mounting seat 414. The fixed mode can be screwing, bonding, interference fit, etc.

[0054] It can be understood that the top surface of the mounting seat 414 is the surface opposite to the camera 3. The mounting seat 414 can not only protect the arc-shaped plate 412 and the second driving motor 413, but also improve the stability of the cleaning module 4. Of course, the mounting seat 414 is not necessary. As a candidate, the second driving motor 413 can be directly mounted on the telescopic arm 421, and the arc-shaped plate 412 can rotate on the telescopic arm 421.

[0055] In addition, the arc-shaped plate 412 and the like are not necessary. The wiping assembly 41 can also only include the wiping cloth 411. In an embodiment, the wiping cloth 411 can be directly fixed on the telescopic arm 421. Through the extension of the telescopic arm 421, the wiping cloth 411 can be moved to the camera 3 and contacted with the camera 3. Then, through the back and forth extension of the telescopic arm 421 by a short distance, the wiping cloth 411 can wipe the camera 3 back and forth.

[0056] It can be understood that the scheme of this embodiment is relatively simple and is suitable for the camera 3 with a flat lens. For the camera 3 with a spherical lens, only part of the surface of the camera 3 can be cleaned. In the illustrated embodiment, because the arc-shaped plate 412 is designed, the camera 3 with a spherical lens can be wiped from 360°, and the cleaning work can be better completed.

[0057] In addition, if a single camera 3 cannot capture all angles of the connection 21, a plurality of cameras 3 can also be provided. For example, two cameras 3 can be provided on opposite sides of the connection 21. For another example, three cameras 3 can be provided and distributed on the circumference of the connection 21. The water immersion sensor is the same, which will not be described here.

[0058] The installation and operation of the pressure detection device 100 of the illustrated embodiment are described below.

[0059] When it is necessary to detect the pressure in the fire hydrant 200, the staff can bind the device body 1 of the pressure detection device 100 on the outer wall of the fire hydrant 200 through the two throat pipes 6, and then fix the two throat pipes 6 through bolts. Then, one end of the connecting pipe 2 is connected to the inside of the fire hydrant 200, and the other end is connected to the device body 1. When the connection is completed, the water valve of the fire hydrant 200 is opened, the water flows through the connecting pipe 2 and the device body 1, so as to detect.

[0060] During the detection, if the connection between the connecting pipe 2 and the device body 1 at the connection 21 leaks, water will be sprayed from the leakage point at the connection 21 and form water mist. When the water immersion sensor senses the water mist, it can indicate that there is a connection problem between the connecting pipe 2 and the device body 1, and then the connection needs to be repaired. Otherwise, the pressure can be detected.

[0061] The camera 3 can perform real-time and multi-angle detection on the connection position 21 of the connecting pipe 2 and the device body 1, can determine the authenticity of water leakage (because the water immersion sensor can be triggered by rain, splashing water from other places and the like, so the authenticity of water leakage can be determined by the camera 3), and the degree of water leakage in the case of real water leakage. When the mirror surface of the camera 3 needs to be cleaned, the staff can start the first driving motor through the remote controller, drive the telescopic end of the first rod part 4211 to extend, drive the mounting seat 414 to move downward to extend from the second accommodating groove 12, until the mounting seat 414 moves to a specified height, then drive the telescopic end of the second rod part 4212 to extend, drive the mounting seat 414 to move to the position of the camera 3, until the mounting seat 414 reaches directly below the camera 3. Then, the first driving motor drives the telescopic end of the first rod part 4211 to contract again, drives the mounting seat 414 to rise, until the cloth 411 contacts the lens surface of the camera 3. Then, the second driving motor 413 drives the arc-shaped plate 412 to rotate, and drives the cloth 411 to rotate to wipe the lens of the camera 3. After the cleaning is completed, the above steps are performed in reverse, so that the mounting seat 414 can be retracted into the second accommodating groove 12.

[0062] In summary, the pressure detection device 100 can determine whether the connection position 21 of the connecting pipe 2 and the device body 1 has water leakage through the water immersion sensor, can obtain the water leakage state of the connection position 21 through the camera 3 on the water immersion sensor, and can clean the mirror surface of the camera 3 through the cleaning module, so that the detection effect of the pressure detection device 100 is ensured from multiple aspects.

[0063] The utility model also constructs a kind of fire hydrant state monitoring system, including controller (not shown in drawing), and the pressure detection device 100 described above;Pressure detection device 100 is used to install on fire hydrant 200, and is connected with the inside of fire hydrant 200 by connecting pipe 2;Controller is connected with pressure detection device 100, to receive pressure feedback information, and the picture information of connection position 21.

[0064] It can be understood that the above embodiments only express the preferred embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope;It should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a plurality of deformations and improvements can be made, which belong to the protection scope of the utility model;Therefore, any equivalent transformation and modification with the utility model claim range should belong to the coverage of the utility model claim.

Claims

1. A pressure detecting apparatus characterized by comprising: The device comprises a device body (1) and a connecting pipe (2) connected to the device body (1) at one end; The pressure detection device further comprises a camera (3) arranged at one side of the connecting position (21) between the device body (1) and the connecting pipe (2), and a cleaning module (4) for cleaning the surface of the camera (3); The cleaning module (4) comprises a wiping assembly (41) arranged at one side of the camera (3), and the wiping assembly (41) comprises a wiping cloth (411). The cleaning module (4) further comprises a driving assembly (42), and the driving assembly (42) comprises a telescopic arm (421) connected to the wiping assembly (41) and a first driving motor for driving the telescopic arm (421) to extend and retract; the telescopic arm (421) drives the wiping assembly (41) to move to the position of the camera (3) to wipe the camera (3) by extension and retraction, and drives the wiping assembly (41) to return to the original position.

2. The pressure detecting apparatus according to claim 1, characterized by The pressure detection device further comprises a fluid sensor (5) arranged at one side of the connecting position (21) for feeding back the leakage condition of the connecting position (21).

3. The pressure detecting apparatus according to claim 2, wherein The surface of the device body (1) connected to the connecting pipe (2) is provided with a first accommodating groove (11) recessed inwardly; the fluid sensor (5) is installed in the first accommodating groove (11); the camera (3) is arranged at the outward side of the fluid sensor (5) and protrudes from the surface of the device body (1) connected to the connecting pipe (2).

4. The pressure detecting apparatus according to claim 3, wherein The fluid sensor (5) comprises a water immersion sensor.

5. The pressure detecting apparatus according to any one of claims 1 to 4, characterized by The mirror surface of the camera (3) is a spherical surface. The wiping assembly (41) further comprises an arc-shaped plate (412) for covering the camera (3), and the wiping cloth (411) is attached to the inner periphery of the arc-shaped plate (412). The wiping assembly (41) further comprises a second driving motor (413) for driving the arc-shaped plate (412) to rotate; the arc-shaped plate (412) rotates to enable the wiping cloth (411) to wipe the camera (3) in a rotating manner.

6. The pressure detecting apparatus according to claim 5, wherein The wiping assembly (41) further comprises a mounting seat (414), and the surface of the mounting seat (414) opposite to the camera (3) is provided with a recessed groove (4141); the arc-shaped plate (412) and the second driving motor (413) are arranged in the recessed groove (4141). One end of the telescopic arm (421) is connected to the mounting seat (414), and the other end is connected to the first driving motor.

7. The pressure detecting apparatus according to claim 5, wherein The camera (3) is a 360° infrared camera.

8. The pressure detecting apparatus according to claim 5, wherein The surface of the device body (1) connected to the connecting pipe (2) is provided with a second accommodating groove (12) recessed inwardly, and the second accommodating groove (12) is arranged at the side of the camera (3) away from the connecting position (21); the wiping assembly (41) and the driving assembly (42) are accommodated in the second accommodating groove (12).

9. The pressure detecting apparatus according to claim 8, wherein The telescopic arm (421) comprises a first rod part (4211) and a second rod part (4212) connected with the first rod part (4211), the first rod part (4211) is arranged in telescopic mode in the longitudinal direction to drive the wiping assembly (41) to reciprocate in the longitudinal direction; the second rod part (4212) is arranged in telescopic mode in the horizontal direction to drive the wiping assembly (41) to reciprocate in the horizontal direction.

10. A hydrant condition monitoring system characterized by, The controller is connected with the pressure detection device to receive pressure feedback information and picture information of the connection (21).