Expansion joint leakage monitor
By installing a separate monitor on the expansion joint, and using sensor probes and circuit boards to combine temperature and noise data for accurate leak monitoring, the problems of immediacy and reliability of traditional detection are solved, and stable and rapid expansion joint leak detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-24
AI Technical Summary
Existing expansion joint leak detection relies on regular manual inspections, which cannot detect leaks in a timely manner. Furthermore, traditional monitors are susceptible to interference from equipment vibration and temperature deformation, leading to false alarms and insufficient reliability.
A split-type expansion joint leak monitor was designed, comprising a base, a hollow shell, a sensor probe, a power supply box, and a circuit board. The sensor probe is directly fixed inside the shell and extends into the sheath, combining temperature and noise data for accurate monitoring and reducing environmental interference.
It enables real-time and accurate monitoring of expansion joint leaks, reduces the impact of environmental interference, improves the reliability of detection, and its structure facilitates quick replacement of parts.
Smart Images
Figure CN224033586U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an expansion joint leak monitor belongs to the prevention and inspection (F17D5 / 02) technical field of leakage. BACKGROUND
[0002] In the field of nuclear power plants and chemical industry, the expansion joint as a key connecting component of the pipeline system, its leakage may cause equipment damage, radioactive material leakage and other major safety accidents.
[0003] Traditional expansion joint leakage detection often relies on artificial periodic inspection, not only consumes manpower but also cannot find the expansion joint leakage situation in time. To solve this problem, the leakage real-time monitor that can be placed around the expansion joint appears at present, which judges the leakage by monitoring the abnormal displacement data of the expansion joint, but multiple sensors need to work together to achieve this purpose, otherwise it is difficult to comprehensively analyze and judge the leakage. Moreover, the detector is easily affected by equipment vibration, temperature deformation and other interference factors, resulting in frequent false alarms and insufficient reliability. UTILITY MODEL CONTENTS
[0004] The technical problem to be solved by the utility model is how to realize real-time accurate monitoring of the expansion joint leakage.
[0005] The technical scheme provided by the utility model to solve the above technical problem is: a base fixed on the expansion joint sheath, a hollow shell fixed on the base and a sensor probe for detecting temperature and noise; the shell is internally provided with a power supply box, the top of the power supply box is fixed with a main circuit board, and the bottom of the power supply box is fixed with a secondary circuit board for reducing environmental interference; the main circuit board is connected with a patch antenna, and the patch antenna is fixed on the inner wall of the shell; one end of the sensor probe is fixed in the shell, and the other end of the sensor probe penetrates through the inside of the base and extends into the sheath.
[0006] Further, an annular fixed plate is fixed in the shell, and one end of the sensor probe penetrates in the fixed plate.
[0007] Further, the base is tubular, the shell is spherical and the bottom extends out a connecting pipe sleeve to be sleeved in the tubular base.
[0008] Further, one end of the sensor probe is sleeved with a self-locking washer.
[0009] Further, the top of the shell is provided with a switch.
[0010] Further, a gasket is clamped at the joint of the base and the shell.
[0011] Further, a socket is fixed on the shell.
[0012] The utility model discloses the beneficial effect is: because directly set up the base on the expansion joint sheath, and place the power supply box and circuit board in the shell fixed on the base, and the sensor probe one end for detecting temperature and noise is fixed in the shell, and the other end passes through the base interior and then stretches into the sheath, constructs the stable signal acquisition environment, greatly reduces the interference of environmental factors, on this basis, through the joint analysis of temperature and noise data, can accurately judge the leakage of expansion joint. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model discloses expansion joint leakage monitor makes further explanation below combining the drawing.
[0014] Figure 1 It is the whole structure schematic diagram of example expansion joint leakage monitor.
[0015] Figure 2 It is the section view of example expansion joint leakage monitor.
[0016] Figure 3 It is the exploded view of example expansion joint leakage monitor.
[0017] In the drawing: 1, expansion joint sheath, 2, base, 3, hollow shell, 4, sensor probe, 5, connecting pipe, 6, screw, 7, gasket, 8, power supply box, 9, screw, 10, main circuit board, 11, secondary circuit board, 12, patch antenna, 13, switch, 14, socket, 15, fixed sheet, 16, self-locking washer. DETAILED DESCRIPTION
[0018] Embodiment
[0019] The expansion joint leakage monitor of this embodiment as shown in Figure 1 And Figure 2 Including tubular base 2 fixed on expansion joint sheath 1, spherical hollow shell 3 fixed on base 2 and sensor probe 4 for detecting temperature and noise, the connecting pipe 5 of shell 3 bottom extends and is sleeved in the base 2, is fixed through screw 6, the junction of base 2 and shell 3 is clamped with gasket 7, is used for buffering shock absorption.
[0020] As Figure 2 And Figure 3As shown, the housing 3 is built-in with a power supply box 8, the top of the power supply box 8 is fixed with a main circuit board 10 through screws 9, the bottom of the power supply box 8 is fixed with a secondary circuit board 11 for reducing environmental interference, maintaining the stable operation of the monitor, improving the accuracy of detection and analysis. The main circuit board 10 is connected with a patch antenna 12, the patch antenna 12 is fixed on the inner wall of the housing 3, the main circuit board 10 sends the results of joint analysis of noise and temperature data to the user end through the patch antenna 12, which is convenient for real-time viewing of the working state of the expansion joint.
[0021] The surface of the housing 3 is provided with a switch 13, which is convenient for one-key start and stop. The housing 3 is also fixed with a socket 14 for connecting external power supply to ensure the continuous power supply of the monitor.
[0022] The housing 3 is fixed with an annular fixing sheet 15, the sensor probe 4 is sleeved in the annular fixing sheet 15 through one end and is fixed in the housing 3, and the end is also sleeved with a self-locking washer 16, which increases the firmness. The other end of the sensor probe 4 penetrates through the inside of the base 2 and extends into the sheath 1 to detect temperature and noise data.
[0023] The expansion joint leakage monitor of the embodiment is quite convenient to maintain due to the split type splicing structure.
[0024] The utility model is not limited to the above-mentioned various embodiments, and any technical solution formed by equivalent replacement falls within the protection scope required by the utility model.
Claims
1. An expansion joint leakage detector, characterized in that: The device includes a base fixed to an expansion joint sheath, a hollow housing fixed to the base, and a sensor probe for detecting temperature and noise. The housing contains a power supply box, with a main circuit board fixed to the top and a secondary circuit board fixed to the bottom to reduce environmental interference. A patch antenna is connected to the main circuit board and fixed to the inner wall of the housing. One end of the sensor probe is fixed inside the housing, and the other end passes through the base and extends into the sheath.
2. The expansion joint leakage detector according to claim 1, characterized in that: An annular fixing plate is fixed inside the housing, and one end of the sensor probe passes through the fixing plate.
3. The expansion joint leakage detector according to claim 1, characterized in that: The base is tubular, and the outer shell is spherical with a connecting tube extending from the bottom and fitting inside the tubular base.
4. The expansion joint leakage detector according to claim 1, characterized in that: A gasket is clamped at the connection between the base and the outer shell.
5. The expansion joint leakage detector according to claim 1, characterized in that: One end of the sensor probe is fitted with a self-locking washer.
6. The expansion joint leakage detector according to claim 1, characterized in that: A switch is located on the top of the housing.
7. The expansion joint leakage detector according to claim 1, characterized in that: The outer casing is fixed with a socket.