Periodic test device for safety valve of pressure gas storage tank

Abstract

The invention relates to the technical field of protection, in particular to a periodic test device for a pressure gas storage tank safety valve. An observation mechanism and an unlocking mechanism are arranged on the unmanned aerial vehicle, the observation mechanism is used for observing the experiment state of the safety valve, and the unlocking mechanism is used for unlocking the locking mechanism, so that the safety valve can be opened by the pull rope. In a non-test state, the locking mechanism locks the system to ensure that the safety valve is not opened after the pull rope is accidentally touched. During a test, locking of the pull rope by the locking mechanism is released through the unlocking mechanism on the unmanned aerial vehicle, and a ground person pulls the pull rope to drive the handle of the safety valve to act, so that opening and closing operation of the safety valve is realized, and a manual test is completed. Meanwhile, an observation mechanism on the unmanned aerial vehicle collects opening and closing states, exhaust conditions and other information of the safety valve in real time to assist personnel in judging the working condition of the safety valve. By means of cooperation of the unmanned aerial vehicle and related mechanisms, climbing operation requirements are reduced, the detection process is more efficient, and strict safety production requirements are met. The device can be widely applied to the protection technology field.

Description

Technical Field

[0001] The present invention relates to the technical field of safety valves, and specifically to a periodic test device for the safety valve of a pressure gas storage tank. Background Art

[0002] As a key accessory to ensure the safe operation of a pressure gas storage tank, the safety valve of the pressure gas storage tank must be inspected by a qualified inspection agency every year. The user unit also needs to conduct a manual test once a week and an automatic exhaust test once a month. However, the safety valve is generally installed on the top of the pressure gas storage tank. Climbing by the staff belongs to high-altitude operation, which requires review and approval. And according to regulations, at least two people must be present during high-altitude operation at the same time. The above factors make the periodic inspection of the safety valve of the pressure gas storage tank extremely cumbersome.

[0003] The manual test device for the safety valve of the pressure gas storage tank disclosed in Patent CN207050970U solves the problem of the need for high-altitude operation for safety valve inspection to a certain extent. The device mainly includes a fixed clamp sleeved on the safety valve, a pull rope fixedly connected at the handle perforation of the safety valve, a power arm horizontally extending on the side of the fixed clamp, and a support member connected to the power arm for supporting the pull rope. One end of the pull rope is connected to the handle perforation of the safety valve, and the other end extends to the ground position after passing around the support member.

[0004] Although this device utilizes the lever principle of saving effort and a fixed pulley to change the direction of the acting force, enabling the tester to manually realize the function of testing the safety valve on the ground, and eliminating potential safety hazards such as falling and injury caused by compressed air impact during ladder testing to a certain extent. However, in the actual application process, two significant problems are still exposed; on the one hand, since the pull rope naturally hangs down in the daily state, newly recruited staff may accidentally pull the rope due to unfamiliarity with the device, thus triggering the action of the safety valve. This may not only interfere with the normal operation order of the gas storage tank but also pose unnecessary safety risks, having an adverse impact on the continuity and stability of production. On the other hand, during the test, the device lacks a corresponding observation device. When the operator pulls the pull rope on the ground for the test, it is impossible to directly and accurately observe the actual state of the safety valve opening and closing, as well as key information such as the exhaust situation. This makes it difficult for the operator to judge whether the safety valve is working properly, greatly increasing potential safety hazards and unable to effectively ensure the reliability and safety of the safety valve test of the gas storage tank.

[0005] It can be seen that the manual test device for the safety valve of the pressure gas storage tank as shown in CN207050970U is no longer able to meet the current increasingly stringent requirements for safe production. There is an urgent need to develop a more perfect periodic test device for the safety valve of the pressure gas storage tank to effectively solve the problems of misoperation risk and inconvenient observation, and to ensure the safe and stable operation of the gas storage tank. Summary of the Invention

[0006] The object of the present invention is to provide a periodic test device for the safety valve of a pressure gas storage tank, so as to solve the problems in the prior art that the safety valve is easily misopened due to the easy accidental pulling of the pull rope, interfering with the operation of the gas storage tank, and the lack of effective observation means during the test, making it difficult to judge the working state of the safety valve.

[0007] To solve the above technical problems, the present invention provides the following technical solutions:

[0008] A periodic test device for the safety valve of a pressure gas storage tank includes a drone and a manual operating system for the safety valve provided on the top wall of the pressure gas storage tank. The manual operating system for the safety valve includes a pull rope hanging on the side wall of the pressure gas storage tank, and further includes a locking mechanism for locking the manual operating system for the safety valve to prevent personnel from accidentally touching the pull rope and opening the safety valve.

[0009] The drone is provided with an observation mechanism and an unlocking mechanism. The observation mechanism is used to observe the experimental state of the safety valve, and the unlocking mechanism is used to unlock the locking mechanism so that the pull rope can open the safety valve.

[0010] The pull rope in the manual operating system for the safety valve hangs on the side wall of the pressure gas storage tank. In the non-test state, the locking mechanism locks the system to ensure that the safety valve will not be opened even if the pull rope is accidentally touched. During the test, first, the unlocking mechanism on the drone releases the locking of the pull rope by the locking mechanism, and the ground personnel pull the pull rope to drive the handle of the safety valve to move, realizing the opening and closing operations of the safety valve and completing the manual test. At the same time, the observation mechanism on the drone collects information such as the opening and closing state of the safety valve and the exhaust situation in real time to assist personnel in judging the working condition of the safety valve.

[0011] The locking mechanism effectively prevents the accidental opening of the safety valve after the pull rope is accidentally touched, reduces the interference with the normal operation of the gas storage tank, reduces the safety risk, and ensures the stable and continuous progress of production. The observation mechanism carried by the drone enables the operator to intuitively and accurately obtain the key information of the safety valve test, facilitating the judgment of whether the safety valve is working properly, and effectively ensuring the reliability and safety of the test. With the cooperation of the drone and related mechanisms, the need for high-altitude operations is reduced, the cumbersome review process is simplified, the labor cost is reduced, and the detection process is made more efficient and intelligent, meeting the strict requirements of work safety.

[0012] Preferably, the manual operating system for the safety valve includes a rotating rod fixed on the top wall of the pressure gas storage tank. The rotating rod is at the same height as the highest point of the safety valve. One end of the pull rope is fixed on the rotating rod, and further includes a linkage rope. One end of the linkage rope is fixed on the rotating rod, and the other end is connected to the handle of the safety valve.

[0013] When the safety valve needs to be opened, pull the rope hanging on the side wall of the pressure gas storage tank. Since one end of the rope is fixed on the rotating rod, the pulling force of the rope causes the rotating rod to rotate. The rotation of the rotating rod drives the linkage rope connected to it, and the other end of the linkage rope is connected to the handle of the safety valve. Since the safety valve is in the open state when the handle of the safety valve is perpendicular to the safety valve, the design that the rotating rod is at the same height as the highest point of the safety valve can ensure that when the linkage rope pulls the handle to rotate to a position perpendicular to the safety valve, the safety valve is accurately opened.

[0014] In this manual operating system of the safety valve, the rotating rod is firmly fixed on the top wall of the pressure gas storage tank and is at the same height as the highest point of the safety valve. In the existing open state of the safety valve, its handle is generally perpendicular to the safety valve, and in the closed state, the handle is parallel to the safety valve. When the safety valve needs to be opened, the operator pulls the rope hanging on the side wall of the pressure gas storage tank. Since one end of the rope is firmly fixed on the rotating rod, the pulling force generated by the rope will drive the rotating rod to rotate. When the rotating rod rotates, the linkage rope connected to it will also move accordingly, and the other end of the linkage rope is connected to the handle of the safety valve, thereby pulling the handle to rotate to a position perpendicular to the safety valve, and at this time the safety valve opens.

[0015] When the external force on the rope is lost, the automatic reset device provided inside the safety valve comes into play. This reset device will push the handle to rotate in the reverse direction to reset. During the reset process of the handle, the rotating rod is driven to rotate in the reverse direction through the linkage rope, so that the whole system returns to the initial state and waits for the next operation.

[0016] Preferably; two independent annular grooves are provided on the rotating rod, and the pulling rope and the linkage rope are respectively arranged in the two annular grooves.

[0017] The two independent annular grooves respectively accommodate the pulling rope and the linkage rope, which can effectively prevent the pulling rope and the linkage rope from interfering and winding with each other during the movement process. This ensures that the action of the pulling rope pulling the rotating rod and the rotating rod driving the handle through the linkage rope can be accurately executed, ensuring that the handle of the safety valve can accurately rotate to the open or closed position each time, improving the accuracy of the operation of the safety valve, and thus enhancing the safety of the operation of the pressure gas storage tank.

[0018] Preferably; two parallel mounting plates are fixed on the top wall of the pressure gas storage tank. An installation ring for the rotating rod to extend into is provided on the side wall of the mounting plate. One end of the rotating rod passes through the installation ring and extends out from the side wall of the mounting plate. A limiting groove is provided at the end of the rotating rod extending out of the mounting plate. The locking mechanism includes a limiting rod. The cross-sections of the limiting rod and the limiting groove are not circular, and the limiting rod can extend into the limiting groove to limit the rotation of the rotating rod.

[0019] When in a non-test state, the limit rod is inserted into the limit groove at the end of the rotating rod. Since the cross-sections of both are non-circular, the limit rod can restrict the rotation of the rotating rod within the mounting ring, thereby preventing the safety valve from being accidentally opened due to the accidental pulling of the pulling rope. When a safety valve test is required, the limit rod is disengaged from the limit groove through the unlocking mechanism, and the rotating rod can then rotate freely. At this time, pulling the pulling rope can drive the rotating rod, and the operation of the safety valve handle is realized through the linkage rope, completing the opening and closing actions of the safety valve.

[0020] The setting of the two parallel mounting plates and the mounting ring provides a stable support structure for the rotating rod. The two ends of the rotating rod are connected to the mounting plates through the mounting ring, making its rotation process more stable, reducing shaking and deviation. This not only helps to extend the service life of the rotating rod and related components, but also ensures that the force transmission of the pulling rope and the linkage rope is smoother during the pulling process, further improving the stability and reliability of the entire manual operating system.

[0021] Preferably, it further includes a slide rail and a slider arranged in the slide rail. A support rod is fixed on the side wall of the limit rod, and one end of the support rod is fixed on the slider. A spring is arranged in the slide rail, one end of the spring abuts against the inner wall of the slide rail, and the other end abuts against the slider. The spring is used to squeeze the slider so that the limit rod extends into the limit groove.

[0022] Under normal conditions, the spring is in a compressed state and squeezes the slider by virtue of its elastic force. The slider drives the support rod and the limit rod, so that the limit rod extends into the limit groove of the rotating rod, restricting the rotation of the rotating rod and preventing the safety valve from being accidentally opened due to the accidental movement of the pulling rope. When a safety valve test is to be carried out, an external force acts on the slider, overcoming the elastic force of the spring. The slider moves in the slide rail, driving the support rod to disengage the limit rod from the limit groove. The rotating rod can then rotate freely. Pull the pulling rope, and operate the safety valve handle through the linkage rope to realize the opening and closing of the safety valve. After the test is over, the external force is removed, the spring restores its deformation, and pushes the slider to make the limit rod re-insert into the limit groove, and the rotating rod is locked again. The setting of the spring endows the locking mechanism with the ability of automatic locking. Without frequent manual operation, as long as the positions of the limit rod and the limit groove correspond, the spring can automatically push the limit rod into the limit groove to ensure that the rotating rod is always in a locked state, effectively reducing the risk of the safety valve being accidentally opened due to human negligence not locking it in time, and further ensuring the safe operation of the pressure gas storage tank.

[0023] Preferably, a parking plate for the unmanned aerial vehicle is arranged between the upper end faces of the two mounting plates, and the slide rail is arranged above the limit rod; the unlocking mechanism includes a telescopic rod arranged on the unmanned aerial vehicle, and the telescopic rod can extend and abut against the support rod, so that the support rod moves away from the limit groove, thereby disengaging the limit rod from the limit groove.

[0024] In this set of periodic test devices for the safety valve of the pressure gas storage tank, the two parallel mounting plates on the top wall of the pressure gas storage tank not only support the rotating rod, but also have a parking plate between their upper end faces for the unmanned aerial vehicle (UAV) to park. The slide rail is located above the limiting rod. The limiting rod of the locking mechanism is connected to the slider in the slide rail through a support rod and is extruded by a spring towards the limiting groove.

[0025] When a safety valve test is required, the UAV flies above the parking plate and lands on it. The telescopic rod on the UAV extends and abuts against the support rod. As the telescopic rod continues to extend, a force is applied to the support rod towards the side away from the limiting groove. This force overcomes the elastic force of the spring, pushes the slider to move in the slide rail, and then drives the limiting rod to disengage from the limiting groove at the end of the rotating rod, unlocking the rotating rod to rotate freely. At this time, the ground operator can pull the pull rope and operate the handle of the safety valve through the rotating rod and the linkage rope to complete the test actions of opening and closing the safety valve. After the test is completed, the telescopic rod of the UAV contracts, the spring returns to its deformed state, and pushes the slider and the limiting rod to re-insert into the limiting groove, locking the rotating rod again. This linkage unlocking method between the UAV and the locking mechanism organically combines different functional components to form a complete and efficient system. Each component cooperates with each other to jointly complete the unlocking before the safety valve test and the locking after the test, further improving the overall performance and reliability of the periodic test device for the safety valve of the pressure gas storage tank.

[0026] Preferably, a positioning groove is formed on the upper end face of the parking plate, a positioning rod that can extend into the positioning groove is fixed on the lower end face of the UAV, and a drainage groove communicating with the positioning groove is also formed on the side wall of the parking plate.

[0027] When the UAV approaches the parking plate and is about to land, the positioning rod fixed on the lower end face of the UAV will accurately align with the positioning groove formed on the upper end face of the parking plate. As the UAV descends, the positioning rod gradually inserts into the positioning groove, realizing the precise positioning of the UAV on the parking plate.

[0028] This positioning not only ensures the accuracy of the UAV's position but also creates stable conditions for subsequent operations. On the one hand, it enables the observation mechanism carried on the UAV to accurately align with the safety valve, ensuring that the state information of the safety valve, such as the opening and closing states, exhaust conditions, etc., can be clearly and accurately obtained during the test. On the other hand, it provides a stable foundation for the operation of the telescopic rod. When unlocking is required, the telescopic rod extends and abuts against the support rod. Due to the tight fit between the positioning rod and the positioning groove, a stable anchor point is provided for the UAV, so that when the telescopic rod applies a thrust to push the support rod, the UAV will not slide and shift due to the reaction force, thus smoothly pushing the support rod to drive the limiting rod to disengage from the limiting groove of the rotating rod and complete the unlocking action, preparing for the subsequent pulling of the pull rope to operate the safety valve. In addition, if there is liquid on the parking plate, it will flow into the positioning groove and be discharged through the drainage groove connected to it.

[0029] Preferably, an indicating line is engraved on the upper end of the parking plate, and the indicating line is located between the positioning groove and the safety valve.

[0030] The operator can ensure that the positioning rod on the drone is accurately inserted into the positioning groove by observing the relative position between the drone and the indicating line.

[0031] Preferably, the observation mechanism includes a camera, a microphone, and a wireless signal transmission module provided on the drone, and also includes a ground receiving terminal; the wireless signal transmission module is used to transmit the image signal collected by the camera and the sound signal collected by the microphone to the receiving terminal on the ground together, so that the operator can observe and judge the test state of the safety valve in real time.

[0032] During the periodic test of the safety valve of the pressure gas storage tank, the observation mechanism on the drone starts to work. The camera is responsible for capturing the real-time images of the safety valve during the test, including details such as the state of the safety valve at the moment of opening and closing, and the specific situation of exhaust; the microphone collects the sounds emitted by the safety valve during the test, such as the sound characteristics of gas discharge when opening.

[0033] The image signal collected by the camera and the sound signal collected by the microphone will be transmitted to the wireless signal transmission module on the drone. This module integrates and encodes these signals and then sends them out in a wireless communication manner. After receiving the signals sent by the wireless signal transmission module, the ground receiving terminal decodes them, restores the image signal to an image, and the sound signal to a sound, and presents them to the operator. In this way, the operator can observe the test state of the safety valve in real time on the ground, and accurately judge whether the safety valve is working properly by combining the image and sound information. Brief Description of the Drawings

[0034] Figure 1 It is a schematic diagram of the overall structure of the pressure gas storage tank body and the periodic test device of the safety valve in the embodiment;

[0035] Figure 2 It is a schematic diagram of the overall structure of the periodic test device of the safety valve in the embodiment;

[0036] Figure 3 It is a schematic diagram of the overall structure of the safety valve body in the embodiment;

[0037] Figure 4 It is a schematic diagram of the structure of the rotating rod, the drone and the slide rail in the embodiment;

[0038] Figure 5 It is a schematic diagram of the structure of the drone in the embodiment;

[0039] Figure 6 It is a schematic diagram of the structure of the rotating rod in the embodiment;

[0040] Figure 7 It is a schematic structural diagram of the slide rail in the embodiment.

[0041] 110, drone; 1101, positioning rod; 1102, observation mechanism; 1201, pull rope; 1202, rotating rod; 1203, linkage rope; 1204, annular groove; 1205, limiting groove; 130, mounting plate; 1301, mounting ring; 140, limiting rod; 150, slide rail; 1501, slider; 1502, support rod; 1503, spring; 1504, connecting plate; 160, parking plate; 1601, positioning groove; 1602, drainage groove; 1603, indicating line; 170, telescopic rod; 180, pressure gas storage tank body; 1801, safety valve body; 1802, handle body. Specific implementation manner

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Embodiment

[0044] As Figures 1-7 shown, the periodic test device for the safety valve of the pressure gas storage tank in this embodiment mainly consists of a manual operating system for the safety valve, a locking mechanism, a drone 110 and its supporting components.

[0045] The manual operating system of the safety valve body 1801 includes two parallel mounting plates 130 fixed on the top wall of the pressure gas storage tank body 180. An mounting ring 1301 is provided on the side wall of each mounting plate 130. One end of the rotating rod 1202 passes through the mounting ring 1301 and extends out from the side wall of the mounting plate 130, and the rotating rod 1202 is at the same height as the highest point of the safety valve body 1801. Two independent annular grooves 1204 are specifically provided on the rotating rod 1202. One end of the pull rope 1201 is fixed in one of the annular grooves 1204, and the pull rope 1201 hangs down along the side wall of the pressure gas storage tank body 180. The other end of the linkage rope 1203 is fixed in the other annular groove 1204, and the other end of the linkage rope 1203 is connected to the handle body 1802 of the safety valve body 1801.

[0046] Locking mechanism. A limiting groove 1205 with a non-circular cross-section is provided at the end of the rotating rod 1202 extending out of the mounting plate 130. In this embodiment, the limiting groove 1205 is set as a rectangle, and correspondingly, the limiting rod 140 is also rectangular. The limiting rod 140 can just be inserted into the limiting groove 1205 to limit the rotation of the rotating rod 1202. In addition, a slide rail 150 and a slider 1501 arranged in the slide rail 150 are also provided. The slide rail 150 is fixed on the top wall of the pressure gas storage tank main body 180 through a connecting plate 1504. A support rod 1502 is fixed on the side wall of the top of the limiting rod 140. One end of the support rod 1502 is firmly fixed on the slider 1501. A spring 1503 is arranged in the slide rail 150. One end of the spring 1503 tightly abuts against the inner wall of the slide rail 150, and the other end abuts against the slider 1501. Under normal conditions, the spring 1503 is in a compressed state, which will squeeze the slider 1501, and further make the limiting rod 140 continuously extend into the limiting groove 1205.

[0047] The unmanned aerial vehicle 110 and its supporting components include an unlocking mechanism, an observation mechanism 1102 and related positioning components. A parking plate 160 for parking the unmanned aerial vehicle 110 is arranged between the upper end faces of the two mounting plates 130. The slide rail 150 is arranged above the limiting rod 140.

[0048] The unlocking mechanism arranged on the unmanned aerial vehicle 110 includes a telescopic rod 170. The telescopic rod 170 can adopt electric means or the like, which is prior art and will not be elaborated here. When the unmanned aerial vehicle 110 lands on the parking plate 160, the telescopic rod 170 can extend and abut against the support rod 1502, so that the support rod 1502 moves towards the side away from the limiting groove 1205, realizing the unlocking action of the limiting rod 140 disengaging from the limiting groove 1205. The observation mechanism 1102 is arranged on the unmanned aerial vehicle 110, and it includes a camera, a microphone, a wireless signal transmission module and a ground receiving terminal. The camera is responsible for capturing the real-time images during the test of the safety valve main body 1801, the microphone collects the sounds emitted by the safety valve main body 1801 during the test process, and the wireless signal transmission module transmits the image signal collected by the camera and the sound signal collected by the microphone to the receiving terminal on the ground together.

[0049] In terms of the positioning components, a positioning groove 1601 is provided on the upper end face of the parking plate 160. A positioning rod 1101 that can extend into the positioning groove 1601 is fixed on the lower end face of the unmanned aerial vehicle 110. At the same time, a drainage groove 1602 communicating with the positioning groove 1601 is also provided on the side wall of the parking plate 160, and an indication line 1603 is engraved on the upper end of the parking plate 160. The indication line 1603 is located between the positioning groove 1601 and the safety valve main body 1801.

[0050] The main usage principle of the periodic test device for the safety valve main body 1801 of the pressure gas storage tank main body 180 in this embodiment is as follows:

[0051] Before the test, the UAV 110 flies above the top wall of the pressure gas storage tank main body 180. According to the indication line 1603 on the parking plate 160, the operator controls the UAV 110 to descend, so that the positioning rod 1101 at the lower end face of the UAV 110 aligns with and inserts into the positioning slot 1601 of the parking plate 160, realizing the precise positioning of the UAV 110. After the positioning is completed, the UAV 110 is in a stable state, and the observation mechanism 1102 carried by it aligns with the safety valve main body 1801, and at the same time provides stable support for the subsequent unlocking operation. At this time, under the elastic force of the spring 1503, the limiting rod 140 in the locking mechanism tightly inserts into the limiting slot 1205 at the end of the rotating rod 1202, locking the rotating rod 1202, and further making the manual operating system of the safety valve main body 1801 in a locked state, so that the pull rope 1201 cannot be accidentally pulled to open the safety valve main body 1801.

[0052] When the test of the safety valve main body 1801 is carried out, the telescopic rod 170 on the UAV 110 starts to extend and abuts against the support rod 1502. As the telescopic rod 170 continues to extend, a force is applied to the support rod 1502 towards the side away from the limiting slot 1205. This force overcomes the elastic force of the spring 1503, pushes the slider 1501 to slide in the slide rail 150, and then drives the limiting rod 140 to disengage from the limiting slot 1205 of the rotating rod 1202, unlocking the rotating rod 1202, which can rotate freely, preparing for the operation of the safety valve main body 1801.

[0053] The ground operator pulls the pull rope 1201 hanging on the side wall of the pressure gas storage tank main body 180. Since the pull rope 1201 is fixed in the annular groove 1204 of the rotating rod 1202, the pulling force of the pull rope 1201 drives the rotating rod 1202 to rotate. The rotating rod 1202 pulls the handle main body 1802 of the safety valve main body 1801 through the linkage rope 1203 in another annular groove 1204. Because the rotating rod 1202 is at the same height as the highest point of the safety valve main body 1801, when the linkage rope 1203 drives the handle main body 1802 to rotate to a position perpendicular to the safety valve main body 1801, the safety valve main body 1801 opens, and the observation mechanism 1102 carried on the UAV 110 can observe the opening state of the safety valve main body 1801 to judge whether it can operate normally.

[0054] When the observation is over, the staff loosens the pull rope 1201, and the automatic reset device inside the safety valve main body 1801 takes effect, pushing the handle main body 1802 to rotate reversely to reset, driving the rotating rod 1202 to rotate reversely through the linkage rope 1203, closing the safety valve main body 1801, and restoring the entire manual operating system to its initial state.

[0055] After the reset of the observation handle main body 1802 of the UAV 110 is completed, the telescopic rod 170 contracts, and the limiting rod 140 re-enters the limiting groove 1205 under the action of the spring 1503 to lock the rotating rod 1202. The staff then operates the UAV 110 to fly away from the pressure gas storage tank main body 180.

[0056] The safety valve main body 1801 generally comes with a reset device. When the internal pressure of the pressure gas storage tank main body 180 is relatively high, the safety valve main body 1801 is pressed to open and exhaust to reduce the pressure. When the pressure returns to normal, the safety valve main body 1801 closes. Common reset devices include spring reset devices and weight reset devices. This is prior art and will not be elaborated in this embodiment.

[0057] During the test of the safety valve main body 1801, the camera on the UAV 110 captures image information such as the opening and closing moments of the safety valve main body 1801 and the exhaust situation in real time, and the microphone collects the sound information emitted by the safety valve main body 1801 during the test, such as the gas discharge sound. These image and sound signals are transmitted to the wireless signal transmission module on the UAV 110. After the module integrates and encodes the signals, it sends them to the ground receiving terminal in a wireless communication manner. The ground receiving terminal decodes the received signals, restores the image signals into images and the sound signals into sounds, and presents them to the operator. The operator can accurately judge whether the safety valve main body 1801 is working properly based on this.

[0058] In the above setting, the locking mechanism effectively avoids the accidental opening of the safety valve main body 1801 caused by the accidental touch of the pull rope 1201 through the close cooperation between the limiting rod 140 and the limiting groove 1205, reduces the interference with the normal operation of the pressure gas storage tank main body 180, and ensures the stable and continuous production. Secondly, with the cooperation of the UAV 110 and related mechanisms, the operator does not need to perform high-altitude operations, reducing the safety risks brought by high-altitude work and meeting the strict requirements of safe production.

[0059] The observation mechanism 1102 provided on the UAV 110 includes a camera, a microphone and a wireless signal transmission module. Only the observation mechanism 1102 is drawn in the drawings of this embodiment, and the specific structures of the camera and the microphone in the observation mechanism 1102 are not shown. They are all common technologies and will not be specifically detailed in the drawings. This enables the operator to obtain the key information of the test of the safety valve main body 1801 in real time on the ground, facilitating accurate judgment and improving the operation convenience. At the same time, no charged equipment needs to be installed on the pressure gas storage tank main body 180 for the entire test device, avoiding potential safety hazards such as electric sparks that may be caused by electronic equipment. For the flammable and explosive pressure gas storage tank main body 180, non-charged operation greatly improves the safety.

[0060] In summary, this periodic test device for the safety valve of the pressure gas storage tank effectively guarantees the safety of the staff during the operation in the trench, improving the safety and efficiency of the work.

Claims

1. A periodic test device for a safety valve of a pressure gas storage tank, comprising an unmanned aerial vehicle (110) and a manual operating system for the safety valve arranged on the top wall of the pressure gas storage tank, characterized in that: The manual operating system of the safety valve comprises a pull rope (1201) hanging on the side wall of the pressure gas storage tank, and also comprises a locking mechanism, the locking mechanism is used to lock the manual operating system of the safety valve to prevent a person from accidentally touching the pull rope (1201) and causing the safety valve to open; The drone (110) is provided with an observation mechanism (1102) and an unlocking mechanism, wherein the observation mechanism (1102) is used to observe the experimental state of the safety valve, and the unlocking mechanism is used to unlock the locking mechanism so that the pull rope (1201) can open the safety valve.

2. The periodic test device for the safety valve of a pressure gas storage tank according to claim 1 is characterized in that: The manual operating system of the safety valve comprises a rotating rod (1202) fixed on the top wall of the pressure gas storage tank, wherein the rotating rod (1202) is at the same height as the highest point of the safety valve, one end of the pull rope (1201) is fixed on the rotating rod (1202), and the pull rope (1201) also comprises a linkage rope (1203), one end of the linkage rope (1203) is fixed on the rotating rod (1202), and the other end is connected to the handle of the safety valve.

3. The periodic test device for the safety valve of a pressure gas storage tank according to claim 2 is characterized in that: The rotating rod (1202) is provided with two mutually independent annular grooves (1204), and the pull rope (1201) and the linkage rope (1203) are respectively arranged in the two annular grooves (1204).

4. The periodic test device for the safety valve of a pressure gas storage tank according to claim 2 is characterized in that: Two mutually parallel mounting plates (130) are fixed on the top wall of the pressure gas storage tank, and a mounting ring (1301) for a rotating rod (1202) to extend into is provided on the side wall of the mounting plate (130), one end of the rotating rod (1202) passes through the mounting ring (1301) and extends out from the side wall of the mounting plate (130), and a limiting groove (1205) is provided at the end of the rotating rod (1202) extending out of the mounting plate (130), and the locking mechanism includes a limiting rod (140), and the cross sections of the limiting rod (140) and the limiting groove (1205) are not circular, and the limiting rod (140) can extend into the limiting groove (1205) to limit the rotation of the rotating rod (1202).

5. The periodic test device for the safety valve of a pressure gas storage tank according to claim 4 is characterized in that: It also includes a slide rail (150) and a slider (1501) arranged in the slide rail (150); a support rod (1502) is fixed on the side wall of the limit rod (140); one end of the support rod (1502) is fixed on the slider (1501); a spring (1503) is arranged in the slide rail (150); one end of the spring (1503) abuts against the inner wall of the slide rail (150) and the other end abuts against the slider (1501); the spring (1503) is used to squeeze the slider (1501) so that the limit rod (140) extends into the limit groove (1205).

6. The periodic test device for the safety valve of a pressure gas storage tank according to claim 5 is characterized in that: A parking plate (160) for parking the drone (110) is arranged between the upper end surfaces of the two mounting plates (130), and the slide rail (150) is arranged above the limiting rod (140); the unlocking mechanism comprises a telescopic rod (170) arranged on the drone (110), and the telescopic rod (170) can be extended and abutted against the support rod (1502), so that the support rod (1502) moves to a side away from the limiting groove (1205), thereby causing the limiting rod (140) to escape from the limiting groove (1205).

7. The periodic test device for the safety valve of a pressure gas storage tank according to claim 6 is characterized in that: The upper end surface of the parking plate (160) is provided with a positioning groove (1601), the lower end surface of the drone (110) is fixed with a positioning rod (1101) that can extend into the positioning groove (1601), and the side wall of the parking plate (160) is also provided with a drainage groove (1602) that is connected to the positioning groove (1601).

8. The periodic test device for the safety valve of a pressure gas storage tank according to claim 7 is characterized in that: An indicator line (1603) is engraved on the upper end of the parking plate (160), and the indicator line (1603) is located between the positioning groove (1601) and the safety valve.

9. The periodic test device for the safety valve of a pressure gas storage tank according to claim 1 is characterized in that: The observation mechanism (1102) includes a camera, a microphone, a wireless signal transmission module, and a ground receiving terminal arranged on the drone (110); the wireless signal transmission module is used to transmit the image signal collected by the camera and the sound signal collected by the microphone to the ground receiving terminal, so that the operator can observe and judge the test status of the safety valve in real time.

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