A casing pressure protection device and method

Abstract

This invention relates to the field of casing pressure protection technology, and particularly to a casing pressure protection device and method. The technical solution includes a casing pressure protection device and method comprising a protection device body, a diaphragm disc, a support column, a compression spring pad, a bottom rubber ring, side rubber rings, a top rubber ring, and a connecting flange. A diaphragm disc is also disposed on the top surface of the protection device body, and a support column is disposed on the surface of the diaphragm disc. Compared to traditional casing pressure protection devices and methods, which generally have simpler sealing structures and lack multi-layered sealing and protection designs, typically only including basic pressure monitoring and alarm functions, relying too heavily on a single pressure threshold for alarms, this casing pressure protection device and method provides comprehensive sealing protection, 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.

Description

Technical Field

[0001] This invention 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. Summary of the Invention

[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 the present invention is as follows: a casing pressure protection device and method, comprising 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, 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.

[0007] 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.

[0008] Preferably, 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.

[0009] Preferably, a valve cover 8 is provided above the main body 1 of the protective device, and a rain cap 9 is provided on the top surface of the valve cover 8.

[0010] Preferably, the main body 1 of the protection device is provided with a spring assembly 11 inside, the spring assembly 11 is provided with a waterproof micro switch 10 inside, and a connecting flange 12 is provided on one side of the main body 1 of the protection device.

[0011] A casing pressure protection method includes the following steps:

[0012] S101: First, monitor and provide early warning of the pressure inside the casing;

[0013] S102: Determine the monitored rate of pressure increase;

[0014] S103: A rapid alarm will be triggered when the rate of pressure increase reaches the rapid alarm condition.

[0015] S104: Prepare for the pressure that needs to be released, and then release the excessive pressure inside the casing;

[0016] S105: Perform subsequent inspections and maintenance on the inside of the transformer bushing.

[0017] Preferably, pressure monitoring and early warning include the following steps:

[0018] S201: Install a bushing protection device at the manhole of the transformer bushing riser seat. The device has a built-in pressure sensor and micro switch.

[0019] S202: Continuously monitor pressure changes inside the bushing using a pressure sensor;

[0020] S203: A pressure threshold is preset. When the monitored pressure reaches or exceeds this threshold, an early warning mechanism is triggered.

[0021] S204: Send the warning signal to the monitoring center or relevant personnel via a micro switch or other signal transmission device.

[0022] Preferably, the determination of the pressure growth rate includes the following steps:

[0023] S301: Continuously collect pressure data inside the casing and record timestamps;

[0024] S302: Calculate the rate of pressure increase based on the collected pressure data;

[0025] S303: Compare the calculated growth rate with the preset standard value to determine whether the pressure increase is rapid.

[0026] Preferably, when issuing a rapid alarm, the following steps are included:

[0027] S401: When the pressure increase rate reaches or exceeds the preset rapid alarm condition, the alarm mechanism is triggered;

[0028] S402: Sends a rapid alarm signal via the alarm combination within the bushing protection device, including a pressure switch and a micro switch;

[0029] S403: Ensure that alarm signals can be quickly transmitted to relevant personnel so that emergency measures can be taken.

[0030] Preferably, the pressure release process includes the following steps:

[0031] S501: After the alarm signal is issued, immediately check the status of the bushing protection device to ensure that it is in normal working condition;

[0032] S502: Adjust the relevant components within the protection device to prepare for the upcoming pressure release;

[0033] S503: When the pressure inside the bushing increases to the preset pressure relief valve action value, the pressure relief mechanism is triggered;

[0034] S504: The pressure relief valve is activated, releasing the pressure inside the bushing by oil injection or other means;

[0035] S505: Continuously monitor pressure changes during the pressure release process to ensure effective pressure release.

[0036] As a preferred option, subsequent inspections and maintenance should include the following steps:

[0037] S601: After the pressure is released, immediately conduct an on-site inspection to confirm whether the transformer bushings and protection devices are damaged;

[0038] S602: Collect and analyze pressure monitoring data and alarm records to evaluate the effectiveness of protection methods;

[0039] S603: Based on the inspection results and data analysis, perform necessary maintenance on the bushing protection device to ensure its long-term stable operation.

[0040] The beneficial effects of this invention are:

[0041] 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.

[0042] 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

[0043] Figure 1 The diagram shown is a first perspective structural schematic of a casing pressure protection device according to the present invention.

[0044] Figure 2 The diagram shown is a second three-dimensional structural schematic of a casing pressure protection device according to the present invention.

[0045] Figure 3 The diagram shown is a three-dimensional internal structure of a casing pressure protection device according to the present invention.

[0046] Figure 4 The diagram shown is a three-dimensional internal structure of a casing pressure protection device according to the present invention.

[0047] Figure 5 The diagram shown is a schematic representation of the protection process of a casing pressure protection method according to the present invention.

[0048] Figure 6 The diagram shown is a pressure release process of a casing pressure protection method according to the present invention.

[0049] 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

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0051] Please see Figures 1-4The present invention provides an embodiment of a bushing pressure protection device and method, comprising 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 rain 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, 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] Please see Figures 5-6In this embodiment, a casing pressure protection method includes the following steps:

[0057] S101: First, monitor and provide early warning of the pressure inside the casing;

[0058] S102: Determine the monitored rate of pressure increase;

[0059] S103: A rapid alarm will be triggered when the rate of pressure increase reaches the rapid alarm condition.

[0060] S104: Prepare for the pressure that needs to be released, and then release the excessive pressure inside the casing;

[0061] S105: Perform subsequent inspections and maintenance on the inside of the transformer bushing.

[0062] Preferably, pressure monitoring and early warning include the following steps:

[0063] S201: Install a bushing protection device at the manhole of the transformer bushing riser seat. The device has a built-in pressure sensor and micro switch.

[0064] S202: Continuously monitor pressure changes inside the bushing using a pressure sensor;

[0065] S203: A pressure threshold is preset. When the monitored pressure reaches or exceeds this threshold, an early warning mechanism is triggered.

[0066] S204: Send the warning signal to the monitoring center or relevant personnel via a micro switch or other signal transmission device.

[0067] Preferably, the determination of the pressure growth rate includes the following steps:

[0068] S301: Continuously collect pressure data inside the casing and record timestamps;

[0069] S302: Calculate the rate of pressure increase based on the collected pressure data;

[0070] S303: Compare the calculated growth rate with the preset standard value to determine whether the pressure increase is rapid.

[0071] Preferably, when issuing a rapid alarm, the following steps are included:

[0072] S401: When the pressure increase rate reaches or exceeds the preset rapid alarm condition, the alarm mechanism is triggered;

[0073] S402: Sends a rapid alarm signal via the alarm combination within the bushing protection device, including a pressure switch and a micro switch;

[0074] S403: Ensure that alarm signals can be quickly transmitted to relevant personnel so that emergency measures can be taken.

[0075] Preferably, the pressure release process includes the following steps:

[0076] S501: After the alarm signal is issued, immediately check the status of the bushing protection device to ensure that it is in normal working condition;

[0077] S502: Adjust the relevant components within the protection device to prepare for the upcoming pressure release;

[0078] S503: When the pressure inside the bushing increases to the preset pressure relief valve action value, the pressure relief mechanism is triggered;

[0079] S504: The pressure relief valve is activated, releasing the pressure inside the bushing by oil injection or other means;

[0080] S505: Continuously monitor pressure changes during the pressure release process to ensure effective pressure release.

[0081] As a preferred option, subsequent inspections and maintenance should include the following steps:

[0082] S601: After the pressure is released, immediately conduct an on-site inspection to confirm whether the transformer bushings and protection devices are damaged;

[0083] S602: Collect and analyze pressure monitoring data and alarm records to evaluate the effectiveness of protection methods;

[0084] S603: Based on the inspection results and data analysis, perform necessary maintenance on the bushing protection device to ensure its long-term stable operation.

[0085] 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.

[0086] Example 1

[0087] The casing pressure protection device consists of the following components:

[0088] Protective device body 1: Made of titanium alloy, it has extremely high strength and corrosion resistance, making it suitable for harsh environments;

[0089] Diaphragm plate 2: Made of ceramic material, it is resistant to high temperature and wear, ensuring stable performance even under extreme conditions;

[0090] Support column 3 and compression spring pad 4: Both are made of special alloy materials, providing extremely high stability and durability;

[0091] Rubber rings (bottom rubber ring 5, side rubber ring 6 and top rubber ring 7): Made of fluororubber material, which has excellent oil resistance, chemical corrosion resistance and high temperature resistance;

[0092] Valve cover 8 and rain cap 9: Designed as a wind and sand resistant structure to prevent sand and dust from entering the device;

[0093] Waterproof micro switch 10: Features a sealed design to ensure reliable operation even in humid environments;

[0094] Spring assembly 11: Made of high-elasticity alloy material, providing strong restoring force;

[0095] Connection flange 12: Features an anti-loosening design to ensure the connection remains secure under vibration or impact conditions.

[0096] When protecting the casing pressure, the following steps are included:

[0097] S701: Install a bushing protection device at the manhole of the transformer bushing riser seat. It has a built-in pressure sensor and micro switch to continuously monitor the pressure change inside the bushing through the pressure sensor.

[0098] S702: A pressure threshold is preset. When the monitored pressure reaches or exceeds this threshold, an early warning mechanism is triggered, and an early warning signal is sent to the monitoring center or relevant personnel through a micro switch or other signal transmission device.

[0099] S703: Continuously collect pressure data inside the casing and record timestamps; calculate the pressure increase rate based on the collected pressure data.

[0100] S704: Compare the calculated growth rate with the preset standard value to determine whether the pressure growth is rapid. When the pressure growth rate reaches or exceeds the preset rapid alarm condition, trigger the alarm mechanism.

[0101] S705: Sends a rapid alarm signal through the alarm combination in the bushing protection device to ensure that the alarm signal can be quickly transmitted to relevant personnel so that emergency measures can be taken;

[0102] S706: After the alarm signal is issued, immediately check the status of the bushing protection device to ensure that it is in normal working condition, adjust the relevant components in the protection device, and prepare for the upcoming pressure release.

[0103] S707: When the pressure inside the bushing increases to the preset pressure relief valve action value, the pressure relief mechanism is triggered, the pressure relief valve is activated, and the pressure inside the bushing is released by oil injection or other means.

[0104] S708: Continuously monitor pressure changes during the pressure release process to ensure effective pressure release. After pressure release, immediately conduct on-site inspection to confirm whether the transformer bushings and protection devices are damaged.

[0105] S709: Collect and analyze pressure monitoring data and alarm records to evaluate the effectiveness of protection methods;

[0106] S710: Based on the inspection results and data analysis, perform necessary maintenance on the bushing protection device to ensure its long-term stable operation.

[0107] Example 2

[0108] The casing pressure protection method under extreme weather conditions includes the following steps:

[0109] S801: Install a sleeve protection device with a rain cap 9 and an additional sealing ring to enhance waterproof performance; the pressure sensor monitors the pressure every 10 seconds, paying particular attention to pressure fluctuations during weather changes.

[0110] S802: The preset pressure threshold is 0.4 MPa. Considering the safety margin under extreme weather conditions, the pressure increase rate threshold is adjusted to 0.01 MPa / min during severe weather warnings to respond in advance.

[0111] S803: Employs a dual alarm system with both wireless and wired connections to ensure reliable transmission of alarm signals in adverse weather conditions. Alarm signals are simultaneously sent to the monitoring center and the emergency response team.

[0112] S804: Before severe weather begins, manually check and adjust the protection devices to ensure their reliability under extreme conditions. The pressure relief valve is designed to operate normally at low or high temperatures to prevent failure due to weather conditions.

[0113] S805: Immediately after severe weather, conduct a comprehensive inspection, including the waterproofing performance of protective devices and casings, analyze pressure data, and assess the impact of extreme weather on casings and protective devices.

[0114] S806: Based on the inspection results, carry out necessary repairs or replacements to ensure long-term stable operation of the equipment.

[0115] 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 main body (1) of the protective device is provided with a bottom rubber ring (5), the surface of the main body (1) of the protective device 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.

5. A casing pressure protection device according to claims 1-4, characterized in that: A casing pressure protection method includes the following steps: S101: First, monitor and provide early warning of the pressure inside the casing; S102: Determine the monitored rate of pressure increase; S103: A rapid alarm will be triggered when the rate of pressure increase reaches the rapid alarm condition. S104: Prepare for the pressure that needs to be released, and then release the excessive pressure inside the casing; S105: Perform subsequent inspections and maintenance on the inside of the transformer bushing.

6. The casing pressure protection method according to claim 5, characterized in that: The following steps are included when conducting pressure monitoring and early warning: S201: Install a bushing protection device at the manhole of the transformer bushing riser seat. The device has a built-in pressure sensor and micro switch. S202: Continuously monitor pressure changes inside the bushing using a pressure sensor; S203: A pressure threshold is preset. When the monitored pressure reaches or exceeds this threshold, an early warning mechanism is triggered. S204: Send the warning signal to the monitoring center or relevant personnel via a micro switch or other signal transmission device.

7. The casing pressure protection method according to claim 6, characterized in that: The following steps are included when determining the rate of pressure increase: S301: Continuously collect pressure data inside the casing and record timestamps; S302: Calculate the rate of pressure increase based on the collected pressure data; S303: Compare the calculated growth rate with the preset standard value to determine whether the pressure increase is rapid.

8. The casing pressure protection method according to claim 7, characterized in that: When issuing a rapid alarm, the following steps are included: S401: When the pressure increase rate reaches or exceeds the preset rapid alarm condition, the alarm mechanism is triggered; S402: Sends a rapid alarm signal via the alarm combination within the bushing protection device, including a pressure switch and a micro switch; S403: Ensure that alarm signals can be quickly transmitted to relevant personnel so that emergency measures can be taken.

9. A casing pressure protection method according to claim 8, characterized in that: Releasing pressure involves the following steps: S501: After the alarm signal is issued, immediately check the status of the bushing protection device to ensure that it is in normal working condition; S502: Adjust the relevant components within the protection device to prepare for the upcoming pressure release; S503: When the pressure inside the bushing increases to the preset pressure relief valve action value, the pressure relief mechanism is triggered; S504: The pressure relief valve is activated, releasing the pressure inside the bushing by oil injection or other means; S505: Continuously monitor pressure changes during the pressure release process to ensure effective pressure release.

10. A casing pressure protection method according to claim 9, characterized in that: The following steps are included in subsequent inspections and maintenance: S601: After the pressure is released, immediately conduct an on-site inspection to confirm whether the transformer bushings and protection devices are damaged; S602: Collect and analyze pressure monitoring data and alarm records to evaluate the effectiveness of protection methods; S603: Based on the inspection results and data analysis, perform necessary maintenance on the bushing protection device to ensure its long-term stable operation.

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