Casing pipe pressure protection device
By introducing a multi-layer sealing design of bottom rubber ring, side rubber ring and top rubber ring in the casing pressure protection device, combined with the support of support column and compression spring pad, the problem of insufficient sealing of the existing device is solved, realizing more precise pressure monitoring and rapid alarm function, and improving waterproof and dustproof performance and equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG STI ELECTRIC SCI & TECH CO LTD
- Filing Date
- 2025-02-14
- Publication Date
- 2026-04-24
AI Technical Summary
Existing casing pressure protection devices have simple sealing structures and lack multi-layered sealing and protection designs. They rely solely on a single pressure threshold for alarms, resulting in insufficient waterproof and dustproof performance and imprecise monitoring.
It adopts a multi-layer sealing design with bottom rubber ring, side rubber ring and top rubber ring, combined with compression spring pad and support column to provide stable support and pre-tightening force for the diaphragm plate. It is equipped with rain cap and valve cover for additional protection, and realizes fine monitoring and rapid alarm through waterproof micro switch.
It provides comprehensive sealing protection to prevent dust and moisture from entering, monitors pressure changes and calculates the rate of increase, enabling more precise early warning and alarm, avoiding equipment damage, and improving the device's waterproof and dustproof performance and monitoring accuracy.
Smart Images

Figure CN224161701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casing pressure protection technology, and in particular to a casing pressure protection device and method. Background Technology
[0002] The casing pressure protection device is a device specifically designed to monitor, warn of and control the internal pressure of the casing. The device monitors the pressure changes inside the casing in real time through a built-in pressure sensor. When the pressure reaches or exceeds a preset threshold, it can automatically trigger an early warning mechanism and promptly notify relevant personnel to take measures.
[0003] Existing casing pressure protection devices and methods generally have simple sealing structures and lack multi-layered sealing and protection designs. They typically only include basic pressure monitoring and alarm functions and rely too much on a single pressure threshold for alarms.
[0004] To address the issue that existing casing pressure protection devices and methods typically only include basic pressure monitoring and alarm functions, relying too heavily on a single pressure threshold for alarms, this casing pressure protection device and method incorporates a bottom rubber ring, side rubber rings, and a top rubber ring, providing comprehensive sealing protection and effectively preventing the ingress of external dust and moisture. Simultaneously, by continuously monitoring pressure changes and calculating the pressure increase rate, it issues an alarm when rapid alarm conditions are met, providing more refined monitoring and early warning capabilities. Utility Model Content
[0005] To overcome the problems of existing casing pressure protection devices and methods, which generally have simple sealing structures, lack multi-layered sealing and protection designs, and typically only include basic pressure monitoring and alarm functions, relying too much on a single pressure threshold for alarms.
[0006] The technical solution of this utility model is as follows: a casing pressure protection device and method, comprising a protection device body, a diaphragm, a support column, a compression spring pad, a bottom rubber ring, a side rubber ring, a top rubber ring, a valve cover, a rainproof cap, a waterproof micro switch, a spring assembly, and a connecting flange. The top surface of the protection device body is also provided with a diaphragm, the surface of the diaphragm is provided with a support column, multiple sets of support columns are provided, and the top of the support column is provided with a compression spring pad.
[0007] Preferably, the main body of the protective device protects the internal components from the influence of the external environment. The diaphragm can move up and down under pressure. When the pressure exceeds the set value, the movement of the diaphragm will trigger an alarm and release the pressure. The support column provides stable support for the diaphragm to prevent it from sagging or deforming when there is no pressure, while ensuring that the diaphragm can move up and down smoothly. The pressure spring pad provides a certain preload for the diaphragm to ensure the sensitivity and stability of the diaphragm within the normal working range.
[0008] Preferably, the bottom surface of the protective device body is provided with a bottom rubber ring, the surface of the protective device body is provided with a side rubber ring, and the surface of the compression spring pad is provided with a top rubber ring.
[0009] Preferably, a valve cover is provided on the top of the main body of the protective device, and a rain cap is provided on the top surface of the valve cover.
[0010] Preferably, the main body of the protection device is equipped with a spring assembly, which contains a waterproof micro switch, and a connecting flange is provided on one side of the main body of the protection device.
[0011] The beneficial effects of this utility model are:
[0012] 1. Compared with traditional casing pressure protection devices and methods, which generally have simple sealing structures and lack multi-layer sealing and protection designs, typically only include basic pressure monitoring and alarm functions and rely too much on a single pressure threshold for alarms, this casing pressure protection device and method is equipped with a bottom rubber ring, side rubber rings and a top rubber ring, providing comprehensive sealing protection and effectively preventing external dust and moisture from entering. At the same time, by continuously monitoring pressure changes and calculating the pressure increase rate, it issues an alarm when the rapid alarm conditions are reached, providing more refined monitoring and early warning capabilities.
[0013] 2. The design of the bottom rubber ring, side rubber ring and top rubber ring provides comprehensive sealing protection, effectively improving the waterproof and dustproof performance of the device. It not only monitors the pressure value, but also calculates the pressure increase rate, providing more accurate early warning and alarm capabilities, which helps to detect and deal with potential problems in a timely manner. At the same time, a pressure relief valve is designed to automatically release pressure when the pressure reaches the preset value, avoiding equipment damage or safety accidents caused by excessive pressure. Attached Figure Description
[0014] Figure 1 The diagram shown is a first three-dimensional structural schematic of a casing pressure protection device according to this utility model.
[0015] Figure 2 The diagram shown is a second three-dimensional structural schematic of a casing pressure protection device according to this utility model.
[0016] Figure 3 The diagram shown is a three-dimensional internal structure of a casing pressure protection device according to this utility model.
[0017] Figure 4 The diagram shown is a three-dimensional internal structure of a casing pressure protection device according to this utility model.
[0018] Explanation of reference numerals in the attached drawings: 1. Main body of the protective device; 2. Diaphragm plate; 3. Support column; 4. Compression spring pad; 5. Bottom rubber ring; 6. Side rubber ring; 7. Top rubber ring; 8. Valve cover; 9. Rain cap; 10. Waterproof micro switch; 11. Spring assembly; 12. Connecting flange. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Please see Figures 1-4 This utility model provides an embodiment: a casing pressure protection device and method, including a protection device body 1, a diaphragm 2, a support column 3, a compression spring pad 4, a bottom rubber ring 5, a side rubber ring 6, a top rubber ring 7, a valve cover 8, a rainproof cap 9, a waterproof micro switch 10, a spring assembly 11, and a connecting flange 12. The top surface of the protection device body 1 is also provided with a diaphragm 2, and the surface of the diaphragm 2 is provided with a support column 3. Multiple sets of support columns 3 are provided, and the top of the support column 3 is provided with a compression spring pad 4.
[0021] Preferably, the main body 1 of the protection device protects the internal components from the influence of the external environment. The diaphragm 2 can move up and down under pressure. When the pressure exceeds the set value, the movement of the diaphragm 2 will trigger an alarm and release the pressure. The support column 3 provides stable support for the diaphragm 2 to prevent the diaphragm 2 from sagging or deforming when it is not under pressure, while ensuring that the diaphragm 2 can move up and down smoothly. The pressure spring pad 4 provides a certain preload for the diaphragm 2 to ensure the sensitivity and stability of the diaphragm 2 within the normal working range.
[0022] Please see Figures 1-4 In this embodiment, a bottom rubber ring 5 is provided on the bottom surface of the main body 1 of the protective device, a side rubber ring 6 is provided on the surface of the main body 1 of the protective device, and a top rubber ring 7 is provided on the surface of the compression spring pad 4. In use, the bottom rubber ring 5 seals the connection between the main body 1 of the protective device and the transformer bushing riser to prevent external dust and moisture from entering the device. The side rubber ring 6 ensures that the internal components of the device are not affected by the external environment. The top rubber ring 7 provides additional sealing protection above the diaphragm 2 to prevent internal pressure leakage or the entry of external impurities.
[0023] Preferably, a valve cover 8 is provided on the top of the main body 1 of the protective device, and a rain cap 9 is provided on the top surface of the valve cover 8. When in use, the valve cover 8 covers the main body 1 of the protective device, providing additional protection to prevent external objects from damaging the device. The rain cap 9 prevents rainwater and other liquids from entering the interior of the main body 1 of the protective device, ensuring that the device can still work normally under severe weather conditions.
[0024] Preferably, the main body 1 of the protection device is equipped with a spring assembly 11, and a waterproof micro switch 10 is installed inside the spring assembly 11. A connecting flange 12 is provided on one side of the main body 1 of the protection device. In use, when an abnormal internal pressure is detected by the spring assembly 11, the movement of the diaphragm 2 triggers the waterproof micro switch 10 to send an alarm signal. The spring assembly 11 and the pressure spring pad 4 together provide the necessary preload and restoring force to the diaphragm 2, ensuring that the diaphragm 2 can respond quickly and reset when subjected to pressure. The connecting flange 12 facilitates the connection of the main body 1 of the protection device to other equipment.
[0025] During operation, the main body 1 of the protective device protects the internal components from the influence of the external environment. The diaphragm disc 2 can move up and down under pressure. When the pressure exceeds a set value, the movement of the diaphragm disc 2 will trigger an alarm and release pressure. The support column 3 provides stable support for the diaphragm disc 2, preventing it from sagging or deforming when not under pressure, while ensuring smooth up and down movement. The pressure spring pad 4 provides a certain preload to the diaphragm disc 2, ensuring its sensitivity and stability within the normal operating range. The bottom rubber ring 5 seals the connection between the main body 1 of the protective device and the transformer bushing riser, preventing external dust and moisture from entering the device. The side rubber ring 6 ensures that the internal components are not affected by the external environment. The over-the-top rubber ring 7 provides additional sealing protection above the diaphragm disc 2 to prevent internal pressure leakage or the entry of external impurities. The valve cover 8 covers the main body of the protection device 1, providing additional protection against damage from external objects. The rain cap 9 prevents rainwater and other liquids from entering the main body of the protection device 1, ensuring that the device can still operate normally under harsh weather conditions. When an abnormal internal pressure is detected, the movement of the diaphragm disc 2 triggers the waterproof micro switch 10 to send an alarm signal. The spring assembly 11, together with the pressure spring pad 4, provides the necessary preload and restoring force to the diaphragm disc 2, ensuring that the diaphragm disc 2 can respond quickly and reset when subjected to pressure. The connecting flange 12 facilitates the connection of the main body of the protection device 1 to other equipment.
[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A casing pressure protection device, characterized in that: It includes a protective device body (1), a diaphragm plate (2), a support column (3), a spring pad (4), a bottom rubber ring (5), a side rubber ring (6), a top rubber ring (7), a valve cover (8), a rain cap (9), a waterproof micro switch (10), a spring assembly (11), and a connecting flange (12). The top surface of the protective device body (1) is also provided with a diaphragm plate (2), and the surface of the diaphragm plate (2) is provided with a support column (3). There are multiple sets of support columns (3), and the top of the support column (3) is provided with a spring pad (4).
2. The casing pressure protection device according to claim 1, characterized in that: The bottom surface of the protective device body (1) is provided with a bottom rubber ring (5), the surface of the protective device body (1) is provided with a side rubber ring (6), and the surface of the compression spring pad (4) is provided with a top rubber ring (7).
3. The casing pressure protection device according to claim 2, characterized in that: A valve cover (8) is provided on the top of the main body (1) of the protective device, and a rain cap (9) is provided on the top surface of the valve cover (8).
4. The casing pressure protection device according to claim 3, characterized in that: The main body (1) of the protection device is equipped with a spring assembly (11), and the spring assembly (11) is equipped with a waterproof micro switch (10). A connecting flange (12) is provided on one side of the main body (1) of the protection device.