A CPVC flange with water leakage alarm function
By integrating moisture-absorbing cotton, humidity sensors, and alarm devices into CPVC flanges, the problem of CPVC flange leakage not being detected in a timely manner is solved, achieving the effects of leakage alarm and stable connection, and extending the service life of the pipeline system.
Patent Information
- Application Number
- CN202522560086.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-02
AI Technical Summary
Existing CPVC flanges cannot provide timely warnings of leaks when the seals age, the connections become loose, or the medium corrodes, making it difficult to detect even minor leaks and thus accelerating the corrosion and aging of the pipeline system.
A CPVC flange with a water leakage alarm function was designed. A round box is fixedly fitted on the surface of the flange body, containing a moisture-absorbing cotton and a detection box. It is equipped with a humidity sensor and an alarm light strip. The moisture-absorbing cotton absorbs changes in water to detect humidity. The humidity sensor triggers the alarm light strip and a buzzer to sound an alarm. An auxiliary positioning mechanism is used to help fix the flange connection.
It enables timely alarms when flanges leak, prevents moisture accumulation, extends the service life of the piping system, and ensures a secure connection.
Smart Images

Figure CN224944432U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connection fittings technology, specifically a CPVC flange with a water leakage alarm function. Background Technology
[0002] CPVC flanges are pipe fittings made of chlorinated polyvinyl chloride (CPVC) material, used to connect two pipes or a pipe to equipment to achieve the sealing and connection functions of a piping system.
[0003] A search revealed that the patent, CN209960054U, entitled "A Utility Model of Wear-Resistant, Moisture-Proof, and Corrosion-Resistant CPVC Flange," includes a flange body. Research and analysis revealed that although it has advantages such as a simple structure, long service life, excellent wear resistance, moisture resistance, corrosion resistance, and lower cost compared to metal flanges, it also has the following disadvantages to some extent.
[0004] For example, if a flange does not have a water leakage alarm function, when leakage occurs due to aging of the seal, loose connection or corrosion of the medium, the initial small leakage is often difficult to detect because it cannot issue an early warning signal in time. This leads to continuous accumulation of water, and long-term untreated leakage will accelerate the corrosion and aging of the flange and surrounding pipes, thereby shortening the service life of the overall pipeline system. In order to solve the above technical problems, we have designed a CPVC flange with a water leakage alarm function. Utility Model Content
[0005] The purpose of this utility model is to provide a CPVC flange with a water leakage alarm function. This function solves the problem that existing CPVC flanges cannot issue a timely warning signal when leakage occurs due to aging of the seal, loose connection, or corrosion of the medium.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a CPVC flange with a water leakage alarm function, comprising a flange body, a circular box fixedly fitted on the surface of the flange body, a moisture-absorbing cotton fixedly connected to the inner wall of the circular box, a detection box fixedly connected to the bottom of the circular box, a humidity sensor connected to the bottom of the inner cavity of the detection box by bolts, an alarm light strip connected to the front and rear sides of the outer surface of the circular box by bolts, and an auxiliary positioning mechanism riveted to the surface of the circular box.
[0007] Preferably, the auxiliary positioning mechanism includes a housing, a cover plate is bolted to the side of the housing away from the round box, a spring is bolted to the side of the cover plate near the round box, a movable plate is bolted to the end of the spring away from the cover plate, a movable rod is riveted to the right side of the movable plate, a rectangular hole is provided on the right side of the housing, the right end of the movable rod passes through the rectangular hole, and positioning blocks are bolted to the opposite side of the movable rod, and chamfers are provided on the opposite side of the positioning blocks.
[0008] Preferably, the number of auxiliary positioning mechanisms is three, and the auxiliary positioning mechanisms are arranged in a ring around each other.
[0009] Preferably, a connecting pipe is connected to the left side of the flange body, and the detection end of the humidity sensor extends into the interior of the absorbent cotton.
[0010] Preferably, a buzzer is bolted to the outer surface of the round box, and a connection hole is provided at the right edge of the flange body.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. This utility model has the advantage of water leakage alarm function through the cooperation of round box, moisture-absorbing cotton, detection box, humidity sensor and alarm light strip. When water leakage occurs at the connection of two flanges, the moisture-absorbing cotton absorbs the water. At this time, the humidity sensor detects the change in humidity, and then the alarm light strip and buzzer work to remind the staff.
[0013] 2. This utility model has the advantage of auxiliary positioning function by setting an auxiliary positioning mechanism. When connecting two flanges, the conventional flange is inserted into the inside of the round box. During the insertion process, the conventional flange pushes the positioning block, the positioning block drives the movable rod to move, the movable rod drives the movable plate to move, and the movable plate compresses the spring. When the conventional flange extends into the inside of the round box, the spring returns to its original position, and the positioning block limits and fixes the conventional flange, thereby completing the auxiliary positioning operation and making it convenient for users to connect and fix the flange body and the conventional flange. Attached Figure Description
[0014] Figure 1 This is a three-dimensional view of the structure of this utility model;
[0015] Figure 2 This is a three-dimensional left view of the present invention;
[0016] Figure 3 This is a partial three-dimensional view of the present invention;
[0017] Figure 4 This is a perspective view of the circular box structure of this utility model;
[0018] Figure 5 This is a three-dimensional sectional view of the shell structure of this utility model;
[0019] Figure 6 This is a three-dimensional view of the flange body structure of this utility model.
[0020] In the diagram: 1. Flange body; 2. Round box; 3. Moisture-absorbing cotton; 4. Detection box; 5. Humidity sensor; 6. Alarm light strip; 7. Auxiliary positioning mechanism; 71. Housing; 72. Cover plate; 73. Spring; 74. Movable plate; 75. Movable rod; 76. Rectangular hole; 77. Positioning block; 8. Connecting pipe; 9. Buzzer. Detailed Implementation
[0021] Please see Figures 1-6 A CPVC flange with a water leakage alarm function includes a flange body 1 made of CPVC. A circular box 2 is fixedly fitted on the surface of the flange body 1. A moisture-absorbing cotton 3 is fixedly connected to the inner wall of the circular box 2. By setting the moisture-absorbing cotton 3, the trace amount of water leaking from the flange connection can be quickly absorbed to ensure that the humidity sensor 5 can accurately detect the water leakage signal. A detection box 4 is fixedly connected to the bottom of the circular box 2. By setting the detection box 4 and the humidity sensor 5, the humidity change of the moisture-absorbing cotton 3 can be accurately captured to determine whether a water leakage has occurred. The humidity sensor 5 is bolted to the bottom of the inner cavity of the detection box 4. An alarm light strip 6 is bolted to the front and rear sides of the outer surface of the circular box 2. By setting the alarm light strip 6, the light can flash when a water leakage occurs, making it convenient for staff to quickly locate the leaking flange. An auxiliary positioning mechanism 7 is riveted to the surface of the circular box 2.
[0022] Please see Figure 1 and Figure 5 The auxiliary positioning mechanism 7 includes a housing 71. A cover plate 72 is bolted to the side of the housing 71 away from the round box 2. A spring 73 is bolted to the side of the cover plate 72 near the round box 2. By setting the spring 73, it can quickly return to its original position after compression, causing the positioning block 77 to tightly press against the conventional flange, ensuring the positioning is firm. A movable plate 74 is bolted to the end of the spring 73 away from the cover plate 72. A movable rod 75 is riveted to the right side of the movable plate 74. A rectangular hole 76 is opened on the right side of the housing 71. The right end of the movable rod 75 passes through the rectangular hole 76. Positioning blocks 77 are bolted to the opposite side of the movable rod 75. By setting the positioning blocks 77, when the conventional flange is inserted, the flange can be guided smoothly into the positioning area by the chamfer, avoiding the flange edge from being hard stuck with the positioning block 77. At the same time, the inner side of the positioning block 77 fits tightly with the flange edge, limiting the position firmly and preventing the flange from shifting during the installation of bolts. Chamfers are opened on the opposite side of the positioning block 77.
[0023] Please see Figure 1There are three auxiliary positioning mechanisms 7, which are arranged in a ring around each other.
[0024] Please see Figure 1 and Figure 4 The left side of the flange body 1 is connected to a connecting pipe 8. By setting the connecting pipe 8, the flange body 1 can be seamlessly connected to the conveying pipeline. The detection end of the humidity sensor 5 extends into the interior of the moisture-absorbing cotton 3.
[0025] Please see Figure 1 A buzzer 9 is bolted to the outer surface of the round box 2. By setting the buzzer 9, it can penetrate the ambient noise and further remind the staff at a distance of the water leakage problem. A connection hole is opened on the right edge of the flange body 1.
[0026] In use, connect the device to an external battery and controller. When connecting the two flanges, insert the conventional flange into the round box 2. During the insertion process, the conventional flange pushes the positioning block 77, which in turn moves the movable rod 75. The movable rod 75 then moves the movable plate 74, which compresses the spring 73. When the conventional flange extends into the round box 2, the spring 73 returns to its original position, and the positioning block 77 limits and fixes the conventional flange, thus completing the auxiliary positioning operation and preventing the conventional flange from falling off during installation. This facilitates the connection and fixation between the flange body 1 and the conventional flange. In daily use, when water leakage occurs at the connection between the two flanges, the moisture-absorbing cotton 3 absorbs the water. At this time, the humidity sensor 5 detects the change in humidity, and then the alarm light strip 6 and the buzzer 9 activate to alert the staff.
[0027] In summary, this CPVC flange with a water leakage alarm function, through the cooperation of the round box 2, moisture-absorbing cotton 3, detection box 4, humidity sensor 5, and alarm light strip 6, solves the problem that existing CPVC flanges cannot issue timely warning signals when leakage occurs due to aging of the seal, loose connection, or media corrosion during use.
Claims
1. A CPVC flange with a water leakage alarm function, comprising a flange body (1), characterized in that: A round box (2) is fixedly fitted on the surface of the flange body (1). A moisture-absorbing cotton (3) is fixedly connected to the inner wall of the round box (2). A detection box (4) is fixedly connected to the bottom of the round box (2). A humidity sensor (5) is bolted to the bottom of the inner cavity of the detection box (4). An alarm light strip (6) is bolted to the front and rear sides of the outer surface of the round box (2). An auxiliary positioning mechanism (7) is riveted to the surface of the round box (2).
2. A CPVC flange with a water leakage alarm function according to claim 1, characterized in that: The auxiliary positioning mechanism (7) includes a housing (71). A cover plate (72) is bolted to the side of the housing (71) away from the round box (2). A spring (73) is bolted to the side of the cover plate (72) near the round box (2). A movable plate (74) is bolted to the end of the spring (73) away from the cover plate (72). A movable rod (75) is riveted to the right side of the movable plate (74). A rectangular hole (76) is provided on the right side of the housing (71). The right end of the movable rod (75) passes through the rectangular hole (76). A positioning block (77) is bolted to the opposite side of the movable rod (75). A chamfer is provided on the opposite side of the positioning block (77).
3. A CPVC flange with a water leakage alarm function according to claim 1, characterized in that: The number of auxiliary positioning mechanisms (7) is three, and the auxiliary positioning mechanisms (7) are arranged in a ring around each other.
4. A CPVC flange with a water leakage alarm function according to claim 1, characterized in that: The flange body (1) is connected to a connecting pipe (8) on the left side, and the detection end of the humidity sensor (5) extends into the interior of the absorbent cotton (3).
5. A CPVC flange with a water leakage alarm function according to claim 1, characterized in that: A buzzer (9) is bolted to the outer surface of the round box (2), and a connection hole is provided at the right edge of the flange body (1).
Citation Information
Patent Citations
Wear-resistant, damp-proof and corrosion-resistant CPVC flange
CN209960054U
