Pressure relief valve with artificial sight glass and full protection

Abstract

The application discloses a pressure release valve with an artificial observation port and a full protection device, which belongs to the technical field of pressure release valves and comprises a valve body, a protection piece is arranged on the valve body, the protection piece can enable the valve body to operate safely and stably and prevent wind sand and rainwater from entering, the protection piece is a transparent protection cover, the protection cover is fixed on the valve body, a pressure dredging assembly is further arranged on the protection piece, the pressure dredging assembly is used for quickly dredging and releasing the air pressure accumulated in the protection cover when the valve body is depressurized, the fixed transparent protection cover is additionally arranged outside the valve body, the valve body is fully closed and protected, and the valve body can be effectively isolated from adverse environmental factors such as wind sand, rainwater and dust, so that the valve body is prevented from being subjected to faults such as jamming, rusting, contamination and sealing failure, and the operation stability and service life of the valve body are improved.

Description

Technical Field

[0001] This invention relates to the field of pressure relief valve technology, specifically a pressure relief valve with a manual observation port and a full protective device. Background Technology

[0002] Pressure relief valves for box-type transformers are mostly installed under outdoor oil tanks and are exposed to the natural environment for a long time. The existing structure lacks fully enclosed protection measures. Rainwater can easily enter the valve cavity through the gap of the spring knob and the wiring hole, causing internal wiring short circuits. This can cause the transformer protection system to detect abnormal signals and trip erroneously. At the same time, external sand and dust can easily enter the valve body, causing valve core jamming, sealing failure, delayed action response, or even complete loss of pressure relief function. This makes it impossible to provide reliable overpressure protection for the box-type transformer and seriously threatens the safe and stable operation of the equipment.

[0003] Based on this, the present invention designs a pressure relief valve with a manual observation port and a full protective device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a pressure relief valve with a manual observation port and a full protective device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pressure relief valve with a manual observation port and a full protective device, comprising a valve body, wherein a protective component is provided on the valve body, the protective component enabling the valve body to operate safely and stably and preventing wind, sand and rainwater from entering;

[0006] The protective component is a transparent protective cover, which is fixed to the valve body;

[0007] The protective component is also equipped with a pressure relief component, which is used to quickly relieve and release the air pressure accumulated inside the protective cover during valve body depressurization operation.

[0008] The pressure relief assembly includes a sealing element, which is I-shaped and slidably mounted on the protective cover in the vertical direction.

[0009] As a further aspect of the present invention, the pressure relief assembly further includes a driving member, which can cause the sealing member to cancel the seal on the protective cover when the protective cover needs to be depressurized;

[0010] The driving component includes a linear driving component; the output end of the linear driving component is fixedly connected to the upper end of the seal, and the fixed end is fixedly connected to the protective cover.

[0011] As a further aspect of the present invention, the pressure evacuation assembly also includes a dust blocking assembly;

[0012] The dust blocking component is used to prevent dust particles from being stirred up when the airflow impacts the ground during valve body depressurization and exhaust, which can easily cause fine particles to enter the protective shell.

[0013] The dust blocking assembly includes a vent housing, which is fixed on the protective cover. Several ventilation slots are arranged in a circumferential array on the side wall of the vent housing. Each ventilation slot is equipped with a sealing block, which can realize the opening and closing of the ventilation slot. A power component is provided on the sealing block.

[0014] As a further embodiment of the present invention, the power component includes a rotating plate rotatably connected to a rotating shaft inside the vent housing. A rotating shaft is fixedly connected to the rotating shaft of the rotating plate. The upper end of the rotating shaft is slidably engaged with a sealing element via a sliding groove. During the downward movement of the sealing element, the rotating shaft can be driven to rotate by means of the sliding groove. The rotating plate is also provided with a transmission component for driving the sealing block.

[0015] As a further embodiment of the present invention, the transmission component includes a plurality of drive grooves arranged in a circumferential array on the rotating plate, the number of the drive grooves being configured to correspond to the sealing block;

[0016] Each of the drive slots is slidably connected to a connecting rod, the end of the connecting rod away from the drive slot being fixed to a sealing block. During the rotation of the drive slot, the sliding engagement between the slot wall and the connecting rod allows the connecting rod to move towards the direction of rotation.

[0017] As a further embodiment of the present invention, the sealing block is provided with multiple guide grooves on its side.

[0018] As a further embodiment of the present invention, an observation port is provided on the valve body.

[0019] As a further aspect of the present invention, an elastic sealing gasket is provided on the sealing block, and the elastic sealing gasket abuts against the edge of the vent groove to achieve sealing of the vent groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. By adding a fixed transparent protective cover to the outside of the valve body, the valve body is fully enclosed and protected, which can effectively isolate the valve body from the erosion of harsh environmental factors such as wind, sand, rain, and dust, and avoid valve body failure such as jamming, rust, dirt ingress, and sealing failure, thereby improving the valve body's operational stability and service life.

[0022] 2. The high-pressure airflow discharged from the valve body is horizontally discharged outward through the protective cover, vent shell, and vent groove, avoiding the problems of air pressure accumulation and pressure relief obstruction inside the protective cover. At the same time, the high-speed exhaust of the valve body impacting the ground can easily raise a large amount of dust and fine particles. The activated dust and debris blocking component can guide the airflow horizontally and directionally through the vent shell and vent groove, changing the exhaust flow direction and preventing the airflow from blowing directly to the ground and dust from flowing back into the protective cover.

[0023] 3. The rotating shaft and rotating plate are driven to rotate by the sliding groove. Then, the array of drive grooves on the rotating plate and the connecting rod are used to drive the sealing block to realize the automatic opening and closing of the venting groove. This ensures the consistency of the venting groove and allows the pressure relief airflow to be evenly distributed and discharged. It effectively buffers the impact force of the exhaust and avoids the problem of dust and particle backflow caused by the pressure relief airflow hitting the ground directly. It also prevents secondary dirt accumulation inside the valve body and protective cover. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a half-section of the protective cover of the present invention;

[0025] Figure 2 This is a schematic diagram of the half-section side view of the protective cover of the present invention;

[0026] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the vent shell location structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the half-section structure of the vent shell of the present invention;

[0029] Figure 6 This is a schematic diagram of the flow guide channel structure of the present invention;

[0030] The attached diagram lists the components represented by each number as follows:

[0031] Valve body 1, protective cover 2, seal 3, linear drive 4, vent shell 5, vent groove 6, sealing block 7, rotating shaft 8, sliding groove 9, rotating plate 10, drive groove 11, connecting rod 12, guide groove 13, observation port 14. Detailed Implementation

[0032] Please see Figures 1-6 The present invention provides a technical solution: a pressure relief valve with a manual observation port and a full protective device, including a valve body 1, wherein a protective component is provided on the valve body 1, the protective component enables the valve body 1 to operate safely and stably, and prevents wind, sand and rainwater from entering;

[0033] The protective component is a transparent protective cover 2, which is fixed on the valve body 1;

[0034] The protective component is also equipped with a pressure relief component, which is used to quickly relieve and release the air pressure accumulated inside the protective cover during valve body depressurization operation.

[0035] The pressure relief assembly includes a sealing element 3, which is shaped like an I-beam and is slidably arranged on the protective cover 2 in the vertical direction.

[0036] When the pressure relief valve is operating normally, the transparent protective cover 2 is fixedly installed on the outside of the valve body 1 as a fully protective structure. It can block external impurities such as wind, sand, rain, and dust from entering the valve body 1 from all directions, effectively protecting the internal components of the valve body 1 from external environmental corrosion. At the same time, relying on the transparent material of the protective cover 2, the staff can directly observe the working status, sealing condition, and any abnormalities of the valve body 1 through the manual observation port, realizing convenient inspection without stopping the machine or disassembling the cover. When the system pressure exceeds the standard and the valve body 1 performs pressure relief operation, the valve body 1 discharges high-pressure airflow outward. The sealed protective cover 2 will quickly accumulate air pressure, hindering the normal pressure relief operation. At this time, the I-shaped sealing element 3 can slide autonomously along the vertical direction of the protective cover 2, and slide upward under the action of the internal and external air pressure difference, opening the drainage channel and quickly draining the high-pressure gas accumulated inside the protective cover 2. When the air pressure inside the protective cover 2 is restored to balance with the external air pressure, the sealing element 3 automatically slides downward to reset under its own gravity and structural adaptation, re-sealing the drainage position and restoring the overall sealing and protection state of the protective cover 2. It adapts to the pressure relief working rhythm of the valve body 1 throughout the process, ensuring the continuous and stable operation of the equipment.

[0037] By adding a fixed transparent protective cover 2 to the outside of the valve body 1, the valve body 1 is fully enclosed for protection. This effectively isolates the valve body 1 from harsh environmental factors such as wind, sand, rain, and dust, preventing malfunctions such as jamming, rust, contamination, and seal failure, thus improving the operational stability and service life of the valve body 1. Simultaneously, the transparent protective cover 2, combined with a manual observation port, allows for direct observation of the valve body 1's operating condition without disassembling any structure, greatly reducing the difficulty of inspection and maintenance and improving equipment operation and maintenance efficiency. By arranging sliding H-shaped seals 3 on the protective cover 2 to form a pressure relief component, the accumulated air pressure inside the protective cover 2 can be quickly released during valve body 1 depressurization operations. This solves the problem of pressure relief obstruction and pressure buildup caused by the closed structure of the protective cover 2, ensuring that the valve body 1's depressurization action is sensitive and meets depressurization efficiency standards. Furthermore, the I-shaped seal 3 slides open and closes automatically and resets without manual operation. It has a simple structure, high fitting precision, and strong operational reliability. The valve body 1 meets all-weather protection requirements and normal pressure relief performance, making it suitable for various complex working conditions such as outdoor, open-air, dusty, and rainy environments.

[0038] As a further aspect of the present invention, the pressure relief assembly further includes a driving component, which enables the sealing component 3 to release the seal on the protective cover 2 when the protective cover 2 needs to be depressurized.

[0039] The driving component includes a linear driving component 4; the output end of the linear driving component is fixedly connected to the upper end of the sealing component 3, and the fixed end is fixedly connected to the protective cover 2.

[0040] When the pressure relief valve is in normal operation, the protective cover 2 is fixedly installed on the outside of the valve body 1 to form a fully enclosed protective structure, which effectively blocks wind, sand, rainwater and dust from entering the interior of the valve body 1, and prevents the valve body 1 components from being corroded and contaminated. At the same time, the staff can directly observe the operating status, sealing status and opening and closing conditions of the valve body 1 through the manual observation port of the protective cover 2, so as to realize routine and convenient visual inspection.

[0041] At this time, the linear drive component 4 is in standby mode, and the seal component 3 remains closed and sealed to ensure the overall protective sealing of the protective cover 2.

[0042] When the system pressure is abnormal and valve body 1 needs to be depressurized, high pressure will quickly accumulate inside the protective cover 2 due to the exhaust of valve body 1. At this time, the linear drive 4 installed on the protective cover 2 will start working. The fixed end of the linear drive 4 is supported by the protective cover 2, and its output end actively pulls the sealing element 3 to slide vertically downward along the protective cover 2, actively releasing the sealing state of the sealing element 3 on the protective cover 2, quickly opening the pressure relief channel, so that the airflow discharged from valve body 1 can be quickly discharged outward through the protective cover 2, completely eliminating the problem of air pressure accumulation inside the protective cover 2.

[0043] After the valve body 1 has finished depressurizing and the air pressure inside the protective cover 2 has returned to balance, the linear drive component 4 is reset, which drives the sealing component 3 to slide downwards and return to its original position, resealing the protective cover 2 and restoring the equipment to its normal protective working state.

[0044] By installing a transparent protective cover 2 on the outside of the valve body 1, the valve body 1 is fully enclosed for protection. It can resist the erosion of harsh outdoor environments such as wind, sand, rain, and dust in all weather conditions, effectively preventing problems such as valve body 1 jamming, rust, and failure due to dirt ingress, thus improving the operational stability and service life of the valve body 1. At the same time, the transparent structure, combined with the manual observation port, allows for equipment inspection without disassembling the protective structure, greatly simplifying operation and maintenance and improving maintenance efficiency.

[0045] The linear drive component 4 can actively control the opening and closing state of the seal 3, accurately release the sealing state of the protective cover 2 before and during the pressure relief operation of the valve body 1, actively guide the internal air pressure, avoid problems such as delayed opening, insufficient opening force, and incomplete pressure relief that exist in passive pressure relief, and ensure that the pressure relief action of the valve body 1 is not restricted by the closed structure of the protective cover 2, resulting in faster pressure relief response and more stable operation.

[0046] As a further aspect of the present invention, the pressure evacuation assembly also includes a dust blocking assembly;

[0047] The dust blocking component is used to prevent dust particles from being stirred up when the airflow impacts the ground during the depressurization and exhaust of the valve body 1, which can easily cause fine particles to enter the interior of the protective shell.

[0048] The dust blocking assembly includes a ventilated shell 5, which is fixed on the protective cover 2. Several ventilation grooves 6 are arranged in a circumferential array on the side wall of the ventilated shell 5. Each ventilation groove 6 is equipped with a sealing block 7, which can realize the opening and closing of the ventilation groove 6. A power component is provided on the sealing block 7.

[0049] When the system pressure exceeds the standard and the valve body 1 needs to release pressure and exhaust air, the linear drive component 4 is activated first, and the output end pulls the seal 3 to slide upward, releasing the internal seal of the protective cover 2 and opening the pressure relief channel; at the same time, the power component on the vent shell 5 drives the sealing block 7 to move, so that the sealing block 7 is released from the blockage of the vent groove 6, and the multiple circumferentially arranged vent grooves 6 are in a conductive state.

[0050] The high-pressure airflow discharged from valve body 1 is discharged horizontally outward through protective cover 2, vent shell 5, and vent groove 6, avoiding the problem of air pressure accumulation and pressure relief obstruction inside protective cover 2. At the same time, the high-speed exhaust of valve body 1 impacts the ground and easily raises a large amount of dust and fine particles. The activated dust blocking component can guide the airflow horizontally through vent shell 5 and vent groove 6, changing the exhaust flow direction and preventing the airflow from blowing directly to the ground and dust from entering the interior of protective cover 2 in the opposite direction.

[0051] After the valve body 1 has completed the depressurization operation, the linear drive component 4 drives the seal component 3 to slide down and reset, resealing the protective cover 2. At the same time, the power component drives the sealing block 7 to reset and block all the vent grooves 6, preventing external dust and rainwater from entering, so that the equipment can return to its fully enclosed protective state.

[0052] By using the vent shell 5 fixed to the protective cover 2, the circumferentially arrayed air vents 6, and the openable and closable sealing block 7, the directional guidance of the pressure relief airflow and the controllable opening and closing of the channel are realized. This effectively solves the problem of dust being stirred up by the high-speed exhaust of the valve body 1 impacting the ground and fine particles invading the interior of the protective cover 2, thus avoiding secondary dust accumulation and pollution at the source and further protecting the cleanliness of the internal structure of the valve body 1. The sealing block 7 is equipped with an independent power component, which can realize the automatic on / off control of the air vents 6. It opens during pressure relief to ensure smooth exhaust and closes under normal conditions to ensure sealing protection. It takes into account both pressure relief efficiency and dust protection performance. The structure has strong linkage and high reliability, which greatly improves the adaptability and operational stability of the pressure relief valve in complex working conditions such as dusty and open-air environments.

[0053] As a further embodiment of the present invention, the power component includes a rotating plate 10 rotatably connected to a rotating shaft inside the vent housing 5. A rotating shaft 8 is fixedly connected to the rotating shaft of the rotating plate 10. The upper end of the rotating shaft 8 is slidably engaged with the sealing member 3 via a sliding groove 9. During the downward movement of the sealing member 3, the rotating shaft 8 can be driven to rotate by means of the sliding groove 9. The rotating plate 10 is also provided with a transmission component for driving the sealing block 7.

[0054] The transmission component includes multiple drive grooves 11 arranged in a circumferential array on the rotating plate 10, and the number of drive grooves 11 is set in correspondence with the sealing block 7.

[0055] Each of the drive grooves 11 is slidably connected to a connecting rod 12. The end of the connecting rod 12 away from the drive groove 11 is fixed to the sealing block 7. During the rotation of the drive groove 11, the groove wall on the drive groove 11 slides with the connecting rod 12, which enables the connecting rod 12 to move towards the direction of the rotation shaft 8.

[0056] When valve body 1 requires pressure relief, linear drive 4 activates, its output end pulls seal 3 downward along protective cover 2, releasing the seal of protective cover 2. During the downward movement of seal 3, it forms a sliding fit with the upper end of rotating shaft 8 through sliding groove 9, mechanically driving rotating shaft 8 to rotate, causing coaxially fixed rotating plate 10 to rotate synchronously. During the rotation of rotating plate 10, its circumferentially arranged drive grooves 11 rotate accordingly. Utilizing the sliding fit between the groove wall of drive groove 11 and connecting rod 12, each connecting rod 12 is pulled to move closer to rotating shaft 8, thereby causing the sealing block 7 fixed to the connecting rod 12 to move synchronously, releasing the blockage of vent groove 6, and making the vent groove 6 around vent shell 5 completely open. The airflow generated by pressure relief of valve body 1 can be evenly and horizontally discharged outward through vent groove 6, preventing high-pressure airflow from directly hitting the ground and stirring up dust particles, effectively preventing fine dust from re-entering the interior of protective cover 2.

[0057] The rotating shaft 8 and the rotating plate 10 are driven to rotate by the sliding groove 9. Then, the array-type drive groove 11 on the rotating plate 10 and the connecting rod 12 are used to drive the sealing block 7 to realize the automatic opening and closing of the venting groove 6. This ensures the consistency of the venting groove 6 and allows the pressure relief airflow to be evenly distributed and discharged. It effectively buffers the impact force of the exhaust and avoids the problem of dust and particle backflow caused by the pressure relief airflow hitting the ground directly. It also prevents secondary dirt accumulation inside the valve body 1 and the protective cover 2.

[0058] As a further embodiment of the present invention, the sealing block 7 has a plurality of flow guide grooves 13 on its side.

[0059] As a further embodiment of the present invention, the valve body 1 is provided with an observation port 14.

[0060] An observation port 14 is opened on the valve body 1, and a transparent protective cover 2 is provided to allow for a direct view of the internal wiring, corrosion and operation of the valve body 1 without disassembly or shutdown, thereby improving the efficiency of daily inspections and enabling timely detection and handling of potential hazards.

[0061] As a further embodiment of the present invention, an elastic sealing gasket is provided on the sealing block 7, and the elastic sealing gasket abuts against the edge of the venting groove 6 to achieve sealing of the venting groove 6.

Claims

1. A pressure relief valve with a manual observation port and a full protective device, comprising a valve body (1), characterized in that: The valve body (1) is provided with a protective component, which enables the valve body (1) to operate safely and stably and prevents wind, sand and rainwater from entering. The protective component is a transparent protective cover (2), which is fixed on the valve body (1); The protective component is also equipped with a pressure relief component, which is used to quickly relieve and release the air pressure accumulated inside the protective cover during valve body depressurization operation. The pressure relief assembly includes a seal (3), which is shaped like an I-beam and is slidably mounted on the protective cover (2) in the vertical direction.

2. A pressure relief valve with a manual observation port and a full protective device as described in claim 1, characterized in that: The pressure relief assembly also includes a drive component, which enables the seal (3) to release the seal on the protective cover (2) when the protective cover (2) needs to be depressurized; The driving component includes a linear driving component (4); the output end of the linear driving component is fixedly connected to the upper end of the sealing component (3), and the fixed end is fixedly connected to the protective cover (2).

3. A pressure relief valve with a manual observation port and a full protective device according to claim 1, characterized in that: The pressure evacuation assembly also includes a dust and debris blocking assembly; The dust blocking component is used to prevent dust particles from being stirred up when the airflow impacts the ground during the depressurization and exhaust of the valve body (1), which can easily cause fine particles to enter the interior of the protective shell. The dust blocking assembly includes a ventilated shell (5), which is fixed on the protective cover (2). The side wall of the ventilated shell (5) is provided with several ventilated grooves (6) arranged in a circumferential array. Each ventilated groove (6) is equipped with a sealing block (7). The sealing block (7) can realize the opening and closing of the ventilated groove (6). A power component is provided on the sealing block (7).

4. A pressure relief valve with a manual observation port and a full protective device according to claim 3, characterized in that: The power component includes a rotating plate (10) rotatably connected to the rotating shaft inside the vent housing (5). A rotating shaft (8) is fixedly connected to the rotating shaft of the rotating plate (10). The upper end of the rotating shaft (8) slides with the seal (3) via a sliding groove (9). During the downward movement of the seal (3), the rotating shaft (8) can be driven to rotate by the sliding groove (9). The rotating plate (10) is also provided with a transmission component for driving the sealing block (7).

5. A pressure relief valve with a manual observation port and a full protective device according to claim 4, characterized in that: The transmission component includes multiple drive slots (11) arranged in a circumferential array on the rotating plate (10), and the number of drive slots (11) corresponds to the number of sealing blocks (7); Each of the drive slots (11) is slidably connected to a connecting rod (12), and the end of the connecting rod (12) away from the drive slot (11) is fixed to the sealing block (7).

6. A pressure relief valve with a manual observation port and a full protective device according to claim 1, characterized in that: The sealing block (7) has multiple guide grooves (13) on its side.

7. A pressure relief valve with a manual observation port and a full protective device according to claim 1, characterized in that: An observation port (14) is provided on the valve body (1).

8. A pressure relief valve with a manual observation port and a full protective device according to claim 3, characterized in that: An elastic sealing gasket is provided on the sealing block (7), and the elastic sealing gasket abuts against the edge of the vent groove (6) to achieve sealing of the vent groove (6).

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