Breathing valve for easy online monitoring

Abstract

A kind of breathing valve for facilitating online monitoring, including valve body, setting and exhalation valve assembly and inhalation valve assembly in valve body, the exhalation valve assembly and inhalation valve assembly all include valve seat, valve disc and guide rod, the valve body top is fixedly connected with valve cover, the inside of the valve cover is equipped with the movement channel for accommodating guide rod lifting, the top of the valve cover is equipped with proximity switch sensor, the proximity switch sensor is electrically connected with external monitoring center by electric connection line or wireless connection, the guide rod is close to or away from proximity switch sensor by lifting action in movement channel, the proximity switch sensor sends guide rod distance change to monitoring center after sensing.

Description

Technical Field

[0001] This utility model relates to a breather valve that is easy to monitor online, and belongs to the field of valves. Background Technology

[0002] Breathing valves are common safety accessories on petrochemical storage tanks, mainly installed on the top of the tank. They are used to automatically regulate the internal pressure and prevent the tank from deforming or being damaged due to overpressure or vacuum. Traditional breathing valves typically consist of a valve body, an exhalation valve assembly, and an inhalation valve assembly. Both the exhalation and inhalation valve assemblies include a valve seat, a valve disc, and a guide rod. The valve disc opens and closes by raising and lowering the guide rod, thereby balancing the positive and negative pressures inside the tank.

[0003] Most existing breather valves employ a purely mechanical design, with the valve disc's movement entirely dependent on mechanical force balance. When overpressure or vacuum occurs within the tank, operators cannot obtain real-time information on the valve disc's position and operational status, making it difficult to determine whether the valve disc is opening and closing correctly or if there are malfunctions such as jamming or adhesion. This results in blind spots in tank area monitoring, making it difficult to detect and address pressure anomalies in a timely manner. Therefore, there is an urgent need to improve existing technology to solve the technical problem of the inability to monitor the operating status of current breather valves online. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a breathing valve that is easy to monitor online.

[0005] A breathing valve for easy online monitoring includes a valve body, an exhalation valve assembly and an inhalation valve assembly disposed within the valve body, each of the exhalation and inhalation valve assemblies including a valve seat, a valve disc, and a guide rod. A valve cover is fixedly connected to the top of the valve body, and the valve cover has a movement channel inside for accommodating the raising and lowering of the guide rod. A proximity switch sensor is provided on the top of the valve cover, and the proximity switch sensor is electrically connected to an external monitoring center via an electrical connection cable or wireless connection. The guide rod moves closer to or away from the proximity switch sensor by raising and lowering within the movement channel, and the proximity switch sensor sends the change in the distance of the guide rod to the monitoring center after sensing it.

[0006] Furthermore, the probe of the proximity switch sensor extends into the motion channel.

[0007] Furthermore, a magnetic target is fixedly provided at the top of the guide rod of the valve disc, and a magnetic field-penetrable sealing extension cylinder is provided above the valve cover. A receiving base is detachably fixed to the outside of the sealing extension cylinder. The receiving base is provided with multiple magnetic induction slots distributed along the axial direction. Each magnetic induction slot is equipped with a magnetic induction sensor for sensing, receiving, and responding to the position of the magnetic target.

[0008] Furthermore, the magnetic induction sensor is electrically connected to the monitoring center via an electrical connection cable or wireless connection, and is used to receive changes in the magnetic field of the magnetic target and then send the information to the monitoring center.

[0009] Furthermore, the number of magnetic induction slots is at least two.

[0010] Furthermore, the receiving base is composed of two symmetrically arranged semi-circular mounting sleeves that, when merged, form a circular sleeve shape.

[0011] Furthermore, the mounting sleeve has a fixing part extending from both sides, and the fixing part is provided with two fixing holes. After the mounting sleeve is closed, the fixing holes are aligned and then fixedly connected by bolts, so that the receiving seat is fixedly sleeved on the outside of the valve cover.

[0012] Furthermore, a positioning block is provided on the inner wall of the mounting sleeve, and a positioning groove is provided on the valve cover to cooperate with the positioning block.

[0013] Furthermore, elastic pads are provided on the upper and lower inner walls of the magnetic induction groove, and the magnetic induction sensor is installed in the magnetic induction groove by the elastic tight fit of the elastic pads.

[0014] This utility model has significant advantages: This solution can achieve real-time online monitoring of valve disc operation without extensive modification of the tank. Operators can directly obtain information on changes in guide rod distance and magnetic field at the monitoring center, thereby promptly judging the opening and closing status of the valve disc and the pressure relief situation inside the tank. At the same time, the receiving seat adopts a semi-circular mounting sleeve bolt fixing method, which facilitates on-site disassembly and maintenance, reducing modification costs and tank downtime. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a schematic diagram of the overall structure of a breathing valve that is convenient for online monitoring according to this utility model.

[0017] Figure 2 for Figure 1 Partial cross-sectional view of the valve cover, proximity switch sensor, and motion channel.

[0018] Figure 3 This is a schematic diagram of the receiver base of this utility model.

[0019] In the diagram, 1. Valve body; 2. Exhalation valve assembly; 21. Valve seat; 22. Valve disc; 23. Guide rod; 3. Inhalation valve assembly; 31. Valve seat; 32. Valve disc; 33. Guide rod; 4. Valve cover; 41. Movement channel; 42. Positioning groove; 5. Proximity switch sensor; 6. Magnetic target; 7. Sealing extension cylinder; 8. Receiver base; 81. Magnetic induction groove; 82. Magnetic induction sensor; 83. Semi-circular mounting sleeve; 831. Fixing part; 832. Fixing hole; 84. Positioning block; 85. Elastic pad. Detailed Implementation

[0020] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0022] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0023] Based on this, and to improve the problems in related technologies, embodiments of this application provide a breathing valve that facilitates online monitoring, such as... Figures 1 to 3As shown: The system includes a valve body 1, an exhalation valve assembly 2 and an inhalation valve assembly 3 disposed within the valve body 1. Both the exhalation valve assembly 2 and the inhalation valve assembly 3 include valve seats 21 and 31, valve discs 22 and 32, and guide rods 23 and 33. A valve cover 4 is fixedly connected to the top of the valve body 1. The valve cover 4 has a movement channel 41 inside for accommodating the raising and lowering of the guide rods 23 and 33. A proximity switch sensor 5 is located on the top of the valve cover 4. The proximity switch sensor 5 is electrically connected to an external monitoring center via an electrical connection cable or wireless connection. The guide rods 23 and 33 move closer to or further away from the proximity switch sensor 5 as they move up and down within the movement channel 41. Upon sensing this, the proximity switch sensor 5 sends a signal indicating the change in the distance between the guide rods to the monitoring center. The valve body 1 is the main structure of the breathing valve. The exhalation valve assembly 2 and the inhalation valve assembly 3 are responsible for positive pressure exhaust and negative pressure inhalation, respectively. When the guide rods 23 and 33 move up and down within the movement channel 41, the distance between their top ends and the proximity switch sensor 5 changes. The sensor 5 converts the distance signal into an electrical signal and transmits it to the monitoring center, thereby achieving online monitoring of the valve disc's movement. Specifically, when the canister is pressurized, the exhalation valve disc 22 causes the guide rod 23 to rise, bringing it closer to the proximity switch sensor 5. Sensor 5, sensing the decrease in distance, immediately sends a signal to the monitoring center. When the canister is under vacuum, the inhalation valve disc 32 causes the guide rod 33 to rise, similarly triggering sensor 5. This solution directly utilizes the lifting and lowering motion of the guide rod to achieve passive monitoring, eliminating the need for additional test pressure and simplifying the operation process.

[0024] This invention further proposes that the probe of the proximity switch sensor extends into the motion channel. Specifically, the probe of the proximity switch sensor 5 extends directly into the motion channel 41, maintaining a certain gap with the guide rods 23 and 33. When the guide rods rise and fall, the probe can more accurately sense changes in distance. In particular, the probe extension structure avoids the signal attenuation problem caused by external installation. When the guide rods move, they directly change the magnetic field or light field distribution within the probe's sensing area, thereby triggering the sensor to output a switching signal.

[0025] The beneficial effects of this implementation are that the monitoring sensitivity is significantly improved after the probe extends into the motion channel 41, and the signal can be reliably triggered even when the pressure fluctuation inside the tank is small, reducing false alarms or missed alarms. At the same time, this structure does not require additional opening modifications to the valve cover 4, maintaining the original sealing integrity of the valve cover, which is suitable for the safety requirements of explosive environments. In actual operation, for example, when the pressure inside the tank rises slowly and causes the valve disc to lift slightly, the probe can sense the change in the position of the guide rod in the first instance and send the signal to the monitoring center via wireless connection. This allows operators to remotely confirm whether the valve disc has operated normally in the control room, thereby avoiding the trouble of manual inspection required for traditional mechanical valves and improving the real-time performance and convenience of tank area safety management.

[0026] This invention further proposes that a magnetic target is fixedly provided at the top of the guide rod of the valve disc, and a magnetic field-penetrable sealing extension cylinder is provided above the valve cover. A receiving base is detachably fixed to the outside of the sealing extension cylinder. The receiving base has multiple axially distributed magnetic induction slots, and each magnetic induction slot is equipped with a magnetic induction sensor for sensing, receiving, and responding to the position of the magnetic target. Specifically, the magnetic target 6 is fixed to the top of the guide rods 23 and 33, the sealing extension cylinder 7 is located above the valve cover 4 and allows magnetic field penetration, and the receiving base 8 is detachably fixed to the outside of the sealing extension cylinder 7. The magnetic induction slots 81 inside the receiving base are axially distributed and magnetic induction sensors 82 are installed in the slots.

[0027] The beneficial effects of this implementation are that the cooperation between the magnetic target 6 and the magnetic induction groove 81 makes the valve disc position monitoring more accurate and stable, and can reliably transmit signals even in the vibration environment of the tank area; the detachable fixing method of the receiver 8 facilitates on-site maintenance without disassembling the entire valve cover 4; for example, during long-term operation in the tank, when the valve disc has an abnormal lift due to foreign objects, multiple magnetic induction sensors 82 can simultaneously capture the magnetic field change and send it to the monitoring center. Operators can use this to determine the specific fault location and arrange maintenance in a timely manner, avoiding the drawback of traditional breather valves that require the tank to be stopped for inspection, further extending the service life of the equipment and reducing maintenance costs. The overall solution significantly improves the reliability and practicality of online monitoring while ensuring sealing.

[0028] The present invention further proposes that the magnetic induction sensor 82 is electrically connected to the monitoring center via an electrical connection line or a wireless connection, and is used to receive the magnetic field changes of the magnetic target 6 and then send the information to the monitoring center.

[0029] The beneficial effect of this implementation is that the electrical or wireless connection structure of the magnetic induction sensor 82 allows the monitoring data to be directly connected to the existing tank area DCS system without additional wiring modifications; when the magnetic target 6 moves with the guide rod and generates a change in magnetic field, the sensor 82 can respond quickly and send information, avoiding safety hazards caused by signal delay.

[0030] This invention further proposes that the number of magnetic induction slots 81 is at least two, distributed along the axial direction of the receiving base 8. Specifically, multiple slots can correspond to different lift positions of the valve disc, achieving graded position monitoring. This design improves monitoring resolution. As a specific implementation, those skilled in the art can also set the number of slots to three or more according to the actual valve disc stroke, and ensure full stroke coverage by axially equidistant arrangement.

[0031] The beneficial effect of this implementation is that when the guide rods 23 and 33 drive the magnetic target 6 through different slots in sequence, each sensor 82 can trigger a signal in sequence, and the operator can judge whether the valve disc is in a slightly open, half-open or fully open state.

[0032] This invention further proposes that the receiving base 8 is formed by merging two symmetrical semi-circular mounting sleeves 83 to form a circular sleeve. Specifically, the semi-circular structure facilitates its secure mounting from the outside of the valve cover 4. This design simplifies the assembly process.

[0033] The beneficial effects of this implementation are that the symmetrical merging of the two semi-circular mounting sleeves 83 makes the installation of the receiver 8 convenient, and it can be fixed on site without special tools; the circular sleeve formed after merging can tightly cover the sealing extension cylinder 7 to ensure the stability of the magnetic field transmission path; for example, during equipment maintenance, the two mounting sleeves 83 can be separated simply by loosening the bolts, and the sensor 82 can be quickly taken out for calibration or replacement, avoiding the problem of difficult disassembly and assembly of the traditional integrated receiver. At the same time, this structure also improves the alignment accuracy between the receiver 8 and the valve cover 4, reduces signal drift caused by vibration, and further enhances the long-term stability and maintenance convenience of online monitoring.

[0034] The present invention further proposes that the mounting sleeve has a fixing part extending on both sides, and the fixing part is provided with two fixing holes. After the mounting sleeve is closed, the fixing holes are aligned and then fixedly connected by bolts, so that the receiving seat is fixedly sleeved on the outside of the valve cover.

[0035] The beneficial effects of this embodiment are that the bolt fixing method of fixing part 831 and fixing hole 832 makes the connection strength between receiver seat 8 and valve cover 4 high and not easy to loosen; after the mounting sleeve 83 is combined, it can be quickly put on the outside of valve cover, which significantly shortens the on-site installation time, facilitates later disassembly and maintenance, further extends the overall service life of the equipment and reduces the risk of monitoring failure due to loose fixing.

[0036] The present invention further proposes that the inner wall of the mounting sleeve 83 is provided with a positioning block 84, and the valve cover 4 is provided with a positioning groove 42.

[0037] The beneficial effects of this implementation are that the cooperation between the positioning block 84 and the positioning groove 42 ensures that the receiver 8 is precisely aligned in the axial and circumferential directions during installation, avoiding misalignment between the magnetic induction groove 81 and the magnetic target 6; after the mounting sleeve 83 is combined and fixed, the positioning structure can effectively resist the vibration of the tank area and maintain the stability of the signal transmission path.

[0038] The present invention further proposes that the upper and lower inner walls of the magnetic induction groove 81 are provided with elastic pads 85, and the magnetic induction sensor 82 is elastically and tightly fitted by the elastic pads 85.

[0039] The beneficial effect of this embodiment is that the elastic pad 85 tightly fits the magnetic induction sensor 82 firmly into the magnetic induction groove 81, while absorbing vibration energy and reducing sensor loosening or damage; when the magnetic target 6 moves, the sensor 82 remains in a stable position, ensuring accurate transmission of magnetic field change signals.

[0040] The overall working principle of this utility model is as follows: When the pressure inside the canister changes, the valve discs 22 and 32 of the exhalation valve assembly 2 or the inhalation valve assembly 3 drive the guide rods 23 and 33 to rise and fall within the movement channel 41 of the valve cover 4. The magnetic target 6 at the top of the guide rod moves synchronously, and its magnetic field penetrates the sealing extension cylinder 7 and enters the magnetic induction groove 81 in the receiving seat 8. The magnetic induction sensor 82 in the groove senses the change in the magnetic field and sends a signal to the monitoring center through an electrical connection line or wireless means. At the same time, the proximity switch sensor 5 on the top of the valve cover 4 directly senses the change in the distance of the guide rod. After the probe extends into the movement channel 41, it further enhances the sensing accuracy. The two monitoring methods complement each other to ensure that the valve disc action status is fed back online in real time.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0042] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A breathing valve that is easy to monitor online, characterized in that: The device includes a valve body, an exhalation valve assembly and an inhalation valve assembly disposed within the valve body, each of which includes a valve seat, a valve disc, and a guide rod. A valve cover is fixedly connected to the top of the valve body, and the valve cover has a movement channel inside for accommodating the raising and lowering of the guide rod. A proximity switch sensor is provided on the top of the valve cover, and the proximity switch sensor is electrically connected to an external monitoring center via an electrical connection cable or wireless connection. The guide rod moves closer to or away from the proximity switch sensor by raising and lowering within the movement channel, and the proximity switch sensor sends the change in the distance of the guide rod to the monitoring center after sensing it.

2. The breathing valve for easy online monitoring as described in claim 1, characterized in that: The probe of the proximity switch sensor extends into the motion channel.

3. The breathing valve for easy online monitoring as described in claim 1, characterized in that: A magnetic target is fixedly installed at the top of the guide rod of the valve disc. A magnetic field-penetrable sealing extension cylinder is provided above the valve cover. A receiving base is detachably fixed to the outside of the sealing extension cylinder. The receiving base is provided with multiple magnetic induction slots distributed along the axial direction. Each magnetic induction slot is equipped with a magnetic induction sensor for sensing, receiving and reacting to the position of the magnetic target.

4. The breathing valve for easy online monitoring as described in claim 3, characterized in that: The magnetic induction sensor is electrically connected to the monitoring center via an electrical connection cable or wireless connection, and is used to receive changes in the magnetic field of the magnetic target and then send the information to the monitoring center.

5. The breathing valve for easy online monitoring as described in claim 3, characterized in that: The number of magnetic induction slots is at least two.

6. The breathing valve for easy online monitoring as described in claim 3, characterized in that: The receiver base consists of two symmetrically arranged semi-circular mounting sleeves that, when combined, form a circular sleeve shape.

7. The breathing valve for easy online monitoring as described in claim 6, characterized in that: The mounting sleeve has a fixing part extending from both sides. The fixing part has two fixing holes. After the mounting sleeve is closed, the fixing holes are aligned and then fixedly connected by bolts, so that the receiving seat is fixedly sleeved on the outside of the valve cover.

8. The breathing valve for easy online monitoring as described in claim 7, characterized in that: The inner wall of the mounting sleeve is provided with a positioning block, and the valve cover is provided with a positioning groove that cooperates with the positioning block.

9. The breathing valve for easy online monitoring as described in claim 4, characterized in that: The upper and lower inner walls of the magnetic induction groove are provided with elastic pads, and the magnetic induction sensor is installed in the magnetic induction groove by elastic tight fit of the elastic pads.

Images