Lightweight corrosion-resistant gas storage tank with built-in pressure early warning device

Abstract

The invention discloses a light-weight corrosion-resistant gas storage tank with a built-in pressure early warning device, which belongs to the technical field of pressure vessels and comprises a gas storage tank body, and a gas inlet and a gas outlet are symmetrically formed in two sides of the gas storage tank body. The pressure display mechanism composed of the first shaft rod, the pointer and the dial plate is arranged in the outer shell outside the gas storage tank body; through cooperation with a pressure early-warning transmission mechanism composed of an inner plate, a supporting sleeve, a membrane cavity, a membrane, a fixing plate, a sliding rod, a first spring, a sleeve, a spiral groove, a sliding block, a first permanent magnet and a second permanent magnet at the end of a first shaft rod in the gas storage tank body, real-time pressure display can be conducted during use, and non-contact transmission of magnetic coupling is adopted; the air storage tank body does not need to be additionally provided with a mounting hole, so that the strength and the air tightness of the air storage tank body are ensured, and the air storage tank is safer to use.

Description

Technical Field

[0001] The present invention relates to a lightweight and corrosion-resistant gas storage tank, in particular to a lightweight and corrosion-resistant gas storage tank with a built-in pressure warning device, belonging to the technical field of pressure vessels. Background Art

[0002] With the technological upgrading of various application scenarios, the demand for lightweight design of the tank body is becoming increasingly urgent. Thin-walled lightweight tanks have become the mainstream research and development direction. In order to ensure safe use, the pressure warning device has become the core supporting component to ensure the safe and stable operation of the gas storage tank.

[0003] Currently, for the pressure warning device supporting the gas storage tank, an external installation structure is generally adopted in the industry. A dedicated pressure guiding interface is separately opened on the gas storage tank, and the pressure sensing unit and the warning control unit are installed outside the tank body through a pressure guiding pipeline and a mounting flange seat, so as to realize the acquisition, monitoring and warning output of the pressure inside the tank.

[0004] Since the external warning device needs to additionally open a pressure guiding interface and mounting holes on the tank body, it not only reduces the structural reliability of the thin-walled tank body. At the same time, a special sealing connection surface needs to be provided at the pressure guiding interface, and there is a risk of leakage at this part, which affects the sealing performance of the tank body. Moreover, even if the existing warning device has versatility, it highly depends on electronic sensors and external power supply, and its environmental adaptability is extremely poor under harsh working conditions.

[0005] Therefore, a lightweight and corrosion-resistant gas storage tank with a built-in pressure warning device is designed to optimize the above problems. Summary of the Invention

[0006] The main objective of this invention is to provide a lightweight, corrosion-resistant gas storage tank with a built-in pressure warning device. This is achieved by incorporating a pressure display mechanism consisting of a first shaft, pointer, and dial within the outer casing of the gas storage tank. This mechanism, along with a pressure warning transmission mechanism comprised of an inner plate, support sleeve, diaphragm cavity, diaphragm, fixing plate, slide rod, first spring, sleeve, spiral groove, slider, first permanent magnet, and a second permanent magnet at the end of the first shaft, enables real-time pressure display during use. Furthermore, the non-contact transmission using magnetic coupling eliminates the need for additional mounting holes on the gas storage tank, ensuring the tank's strength and airtightness, and making it more convenient to use. For safety, a mechanical alarm mechanism consisting of a second shaft, crossbar, pressure plate, metal ring, and metal cover at the top of the outer casing is used. This mechanism, combined with a gear transmission mechanism consisting of an incomplete gear, double-sided rack, second spring, limit rod, large gear, small gear, first bevel gear, and second bevel gear, is linked to the rotation of the first rotating shaft. This ensures that the mechanical alarm mechanism can be activated to issue an alarm when the gas tank reaches the overpressure warning threshold, is under negative pressure, or experiences abnormal pressure rises or falls. This improves the functionality of the equipment. Furthermore, the entire transmission process does not require electricity, resulting in a faster response, stronger environmental adaptability, and greater practicality.

[0007] The objective of this invention can be achieved by adopting the following technical solution: A lightweight, corrosion-resistant gas storage tank with a built-in pressure warning device includes a tank body. The tank body has symmetrically arranged air inlets and exhaust outlets on both sides. The bottom of the tank body is equipped with a drain outlet and supporting legs. The outer wall of the gas storage tank is fixed with an outer shell, and a pressure display mechanism is installed inside the outer shell to display the gas pressure inside the gas storage tank in real time. The top of the outer shell is equipped with a mechanical bell warning mechanism. A gear transmission mechanism is provided between the mechanical bell warning mechanism and the pressure display mechanism. The gear transmission mechanism is respectively connected to the rotation output end of the pressure display mechanism and the trigger end of the mechanical bell warning mechanism to trigger a warning when the pressure inside the gas storage tank reaches the overpressure warning threshold, the negative pressure warning threshold, or when the pressure rises or falls abnormally. The gas storage tank is equipped with a built-in pressure warning transmission mechanism in its inner cavity. The built-in pressure warning transmission mechanism can generate mechanical action according to the change of gas pressure inside the gas storage tank, and drive the rotating part of the pressure display mechanism to rotate through a magnetic coupling non-contact transmission method.

[0008] Preferably, the pressure display mechanism includes a first shaft, a pointer, and a dial; The first shaft is rotatably installed inside the outer casing. The pointer is fixed at the end of the first shaft facing the observation port of the outer casing. The dial is fixed at the observation port of the outer casing, and the positions of the dial and the pointer correspond to each other. The first shaft is the rotating output end of the pressure display mechanism.

[0009] Preferred: The built-in pressure warning transmission mechanism includes an inner plate, a support sleeve, a diaphragm cavity, a diaphragm, a fixed plate, a slide rod, a first spring, a sleeve, a first permanent magnet, and a second permanent magnet; The inner plate is fixed to the inner wall of the gas storage tank. A support sleeve is fixedly installed on the side of the inner plate facing the inner cavity of the gas storage tank. A membrane cavity is fixed at the end of the support sleeve away from the inner plate. A diaphragm is sealed and fixed at the inner end of the membrane cavity. The outer surface of the diaphragm is in direct contact with the medium inside the gas storage tank. A fixing plate is fixed at the center of the diaphragm, and a sliding rod is fixed at the center of the fixing plate. The sliding rod slides out of the diaphragm cavity and extends into the interior of the support sleeve. A first spring is set between the end of the diaphragm cavity and the fixing plate, and the first spring is sleeved on the outside of the sliding rod. The sleeve is coaxially rotatably mounted on the inner plate, and the end of the slide rod extends into the inner cavity of the sleeve. A rotary fitting assembly is provided between the slide rod and the sleeve. The rotary fitting assembly is used to convert the axial linear sliding of the slide rod into the circumferential rotational motion of the sleeve. The first permanent magnet is fixed at one end of the sleeve facing the inner wall of the gas storage tank, and the second permanent magnet is fixed at the rotating output end of the pressure display mechanism. The second permanent magnet and the first permanent magnet are arranged coaxially opposite each other. The wall of the gas storage tank is located between the first permanent magnet and the second permanent magnet. The two are coupled by magnetic force to form a non-contact transmission cooperation.

[0010] Preferably, the rotary fitting assembly includes a helical groove formed on the inner wall of the sleeve and a slider fixed to the end of the slide rod; The slider is embedded in the spiral groove and slides with the spiral groove. The spiral groove is a closed spiral groove with equal lead. The axial displacement of the slider is linearly related to the rotation angle of the sleeve.

[0011] Preferably, the gear transmission mechanism includes an incomplete gear, a double-sided rack, a second spring, a limit rod, a large gear, a small gear, a first bevel gear, and a second bevel gear; The incomplete gear is fixed to the rotating output end of the pressure display mechanism, the limiting rod is fixed to the inner wall of the outer shell, and the double-sided rack is slidably mounted on the limiting rod, with one side of the double-sided rack meshing with the incomplete gear. The second spring is sleeved on the limiting rod, and the two ends of the second spring abut against the inner wall of the outer shell and the end of the double-sided rack, respectively, to drive the double-sided rack to reset. The large gear is rotatably installed inside the housing and meshes with the other side of the double-sided rack. The small gear meshes with the outside of the large gear. The first bevel gear is coaxially fixed to the shaft end of the small gear. The second bevel gear is rotatably installed on the top of the housing and meshes with the first bevel gear for transmission. The second bevel gear is the output end of the gear transmission mechanism.

[0012] Preferred: The mechanical alarm mechanism includes a second shaft, a crossbar, a pressure plate, a metal ring, and a metal cover; The lower end of the second shaft is fixed coaxially with the output end of the gear transmission mechanism. The crossbar is fixed at the upper end of the second shaft. The pressure plate is fixed at both ends of the top of the crossbar. The metal ring is limited between the pressure plate and the crossbar. The metal cover is placed on the outside of the metal ring. When the metal ring rotates with the second shaft, it can collide with the metal cover and emit a warning sound.

[0013] Preferred configuration: The toothed section of the incomplete gear corresponds to the normal pressure range of the gas storage tank. When the overpressure warning threshold or negative pressure warning threshold inside the gas storage tank is reached, the toothless section of the incomplete gear rotates to the position opposite to the double-sided rack. The double-sided rack quickly resets and drives the mechanical ringing warning mechanism to trigger the warning. When the internal pressure of the gas storage tank rises or falls abnormally, the incomplete gear can quickly drive the double-sided rack to move and trigger the mechanical ringing warning mechanism to trigger the warning.

[0014] Preferably, an acrylic transparent plate is provided at the observation port on the end face of the outer casing, and the inside of the outer casing is in a sealed state.

[0015] Preferred design: The built-in pressure warning transmission mechanism, pressure display mechanism, gear transmission mechanism, and mechanical alarm mechanism are all purely mechanical structures, requiring no external power supply or electronic sensors. They achieve real-time display of tank pressure and automatic warning for multiple operating conditions through pure mechanical linkage.

[0016] Preferably, the limiting rod is provided in two sets, and the two sides of the double-sided rack are symmetrically provided with sliding holes that cooperate with the limiting rod.

[0017] The beneficial effects of this invention are as follows: The lightweight, corrosion-resistant gas storage tank with a built-in pressure warning device provided by this invention features a pressure display mechanism consisting of a first shaft, pointer, and dial within the outer shell of the gas storage tank. This mechanism, combined with a pressure warning transmission mechanism consisting of an inner plate, support sleeve, diaphragm cavity, diaphragm, fixing plate, slide rod, first spring, sleeve, spiral groove, slider, first permanent magnet, and second permanent magnet at the end of the first shaft, enables real-time pressure display during use. Furthermore, the non-contact transmission using magnetic coupling eliminates the need for additional mounting holes on the gas storage tank, ensuring the tank's strength and airtightness, and enhancing safety during use. The mechanical alarm mechanism, consisting of a second shaft, crossbar, pressure plate, metal ring, and metal cover at the top of the outer casing, is linked to a gear transmission mechanism composed of an incomplete gear, double-sided rack, second spring, limit rod, large gear, small gear, first bevel gear, and second bevel gear. This mechanism is activated by the rotation of the first rotating shaft, enabling the mechanical alarm mechanism to sound an alarm when the gas tank reaches the overpressure warning threshold, is under negative pressure, or experiences abnormal pressure rises or falls. This improves the functionality of the equipment. Furthermore, the entire transmission process requires no electricity, resulting in a faster response, greater environmental adaptability, and higher practicality. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the present invention; Figure 2 This is a schematic front sectional view of the present invention; Figure 3 This is a schematic diagram of the internal and external transmission structure of the gas storage tank of the present invention; Figure 4 This is a cross-sectional view of the pressure warning transmission mechanism of the present invention; Figure 5 This is a schematic cross-sectional view of the interior of the outer casing of the present invention; Figure 6 This is an exploded view of the internal structure of the outer casing of the present invention; Figure 7 This is a diagram of the gear transmission mechanism inside the outer casing of the present invention; Figure 8 This is a diagram of the mechanical ringing warning mechanism of the present invention; Figure 9 This is a structural diagram of the second shaft end of the present invention.

[0019] In the diagram: 1. Gas storage tank body; 2. Outer shell; 3. Pressure display mechanism; 301. First shaft; 302. Pointer; 303. Dial; 4. Mechanical alarm mechanism; 401. Second shaft; 402. Crossbar; 403. Pressure plate; 404. Metal ring; 405. Metal cover; 5. Pressure warning transmission mechanism; 501. Inner plate; 502. Support sleeve; 503. Diaphragm cavity; 504. Diaphragm; 505. Fixing plate; 506. Slide rod; 507. First spring; 508. Sleeve; 509. Spiral groove; 510. Slider; 511. First permanent magnet; 512. Second permanent magnet; 6. Gear transmission mechanism; 601. Incomplete gear; 602. Double-sided rack; 603. Second spring; 604. Limiting rod; 605. Large gear; 606. Small gear; 607. First bevel gear; 608. Second bevel gear. Detailed Implementation

[0020] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto. Example 1

[0021] like Figures 1-9 As shown, this embodiment provides a lightweight corrosion-resistant gas storage tank with a built-in pressure warning device, including a gas storage tank body 1. The gas storage tank body 1 has symmetrical air inlets and exhaust outlets on both sides, and a drain outlet and supporting legs are provided at the bottom of the gas storage tank body 1. The outer wall of the gas storage tank 1 is fixed with an outer shell 2, and the inside of the outer shell 2 is equipped with a pressure display mechanism 3 to display the gas pressure inside the gas storage tank 1 in real time. A mechanical alarm mechanism 4 is provided on the top of the outer shell 2. A gear transmission mechanism 6 is provided between the mechanical alarm mechanism 4 and the pressure display mechanism 3. The gear transmission mechanism 6 is respectively connected to the rotation output end of the pressure display mechanism 3 and the trigger end of the mechanical alarm mechanism 4 to trigger an alarm when the overpressure alarm threshold, the negative pressure alarm threshold and the abnormal pressure rise and fall conditions are reached inside the gas storage tank 1. An internal pressure warning transmission mechanism 5 is installed in the inner cavity of the gas tank body 1. The internal pressure warning transmission mechanism 5 can generate mechanical action according to the change of gas pressure inside the gas tank body 1, and drive the rotating part of the pressure display mechanism 3 to rotate through magnetic coupling non-contact transmission.

[0022] Under normal operating conditions, the gas pressure inside the gas storage tank 1 is within the rated normal operating range. The pressure acts directly on the pressure-bearing components of the built-in pressure warning transmission mechanism 5, converting the gas pressure into linear mechanical displacement. Then, through the mechanical structure, the linear displacement is converted into circumferential rotational motion. Finally, through a magnetic coupling non-contact transmission method, the rotational motion inside the tank is transmitted leak-free to the pressure display mechanism 3 outside the tank. The pressure display mechanism 3 displays the current pressure value inside the tank in real time. At this time, the pressure is within the normal operating range, and the gear transmission mechanism 6 rotates synchronously and slowly with the pressure display mechanism 3. The mechanical alarm ringing mechanism 4 rotates slowly as well. Because the speed is too low, it cannot produce an effective impact sound and does not trigger the warning.

[0023] When the pressure inside the gas storage tank 1 becomes abnormal, including reaching the set overpressure warning threshold or negative pressure warning threshold, the built-in pressure warning transmission mechanism 5 simultaneously drives the rotating part of the pressure display mechanism 3 to rotate to the abnormal range, and simultaneously releases the locking state of the gear transmission mechanism 6. The gear transmission mechanism 6 quickly completes power transmission, reversal and speed increase, driving the mechanical bell warning mechanism 4 to continuously emit a high-decibel warning sound. When abnormal pressure rises or falls, the gear transmission mechanism 6 also quickly drives the mechanical bell warning mechanism 4 to continuously emit a high-decibel warning sound, realizing on-site warning of all abnormal operating conditions. When the pressure inside the tank returns to the normal operating range, each mechanism automatically resets under the action of the elastic reset component, the warning stops, and the equipment returns to the normal pressure display state. Example 2

[0024] The solution in Example 1 will be further described below with reference to its specific working method. In this embodiment, the pressure display mechanism 3 includes a first shaft 301, a pointer 302, and a dial 303; The first shaft 301 is rotatably installed inside the outer casing 2, and the axial direction of the first shaft 301 is arranged perpendicular to the wall of the gas storage tank 1. The pointer 302 is fixed at the end of the first shaft 301 facing the observation port of the outer casing 2, and the dial 303 is fixed at the observation port of the outer casing 2. The positions of the dial 303 and the pointer 302 correspond to each other. The dial 303 is pre-printed with scale lines corresponding to the pressure values ​​inside the tank, normal working range markings, overpressure warning range markings, and negative pressure warning range markings. The indicating end of the pointer 302 is parallel to the scale surface of the dial 303. The first shaft 301 is the rotating output end of the pressure display mechanism 3. The end of the first shaft 301 near the gas storage tank 1 is fixedly connected to the second permanent magnet 512 for receiving the magnetic coupling rotational power transmitted inside the tank.

[0025] When the built-in pressure warning transmission mechanism 5 drives the second permanent magnet 512 to rotate through magnetic coupling, the second permanent magnet 512 synchronously drives the first shaft 301 to rotate around its own axis. The first shaft 301 drives the pointer 302 at its end to rotate synchronously. The indicating end of the pointer 302 rotates on the scale surface of the dial 303, accurately pointing to the scale position corresponding to the current tank pressure, realizing real-time and intuitive visualization of the tank pressure. At the same time, the first shaft 301, as the rotation output end of the pressure display mechanism 3, synchronously transmits the rotation action to the input end of the gear transmission mechanism 6 fixed on it, providing power input for subsequent abnormal warning triggering.

[0026] In this embodiment, the built-in pressure warning transmission mechanism 5 includes an inner plate 501, a support sleeve 502, a diaphragm cavity 503, a diaphragm 504, a fixing plate 505, a slide rod 506, a first spring 507, a sleeve 508, a first permanent magnet 511, and a second permanent magnet 512. The inner plate 501 is fixed to the inner wall of the gas storage tank 1. The surface of the inner plate 501 is completely flush with the inner wall of the gas storage tank 1, providing installation support for the entire internal mechanism. A support sleeve 502 is fixedly installed on the side of the inner plate 501 facing the inner cavity of the gas storage tank 1. The support sleeve 502 is a hollow cylindrical structure with open ends, providing an installation and protection cavity for the slide rod 506 and the sleeve 508. A diaphragm cavity 503 is fixed at the end of the support sleeve 502 away from the inner plate 501. A diaphragm 504 is sealed and fixed at the inner end of the diaphragm cavity 503, forming a closed atmospheric pressure cavity. The outer surface of the diaphragm 504 is in direct contact with the medium inside the gas storage tank 1, ensuring the real-time and accurate pressure acquisition without the problems of pressure tapping pipe blockage or delay. A fixing plate 505 is fixed at the center of the diaphragm 504 to convert the surface deformation of the diaphragm 504 into the concentrated linear displacement of the slide rod 506. The slide rod 506 is fixed at the center of the fixing plate 505. The slide rod 506 itself is made of 304 / 316L stainless steel with hard chrome plating and a surface roughness Ra≤0.8μm, which greatly reduces the coefficient of friction and wear rate. The slide rod 506 slides out of the diaphragm cavity 503 and extends into the interior of the support sleeve 502. A combination dynamic sealing structure of polytetrafluoroethylene guide ring and double fluororubber O-ring is provided at the point where the slide rod 506 and the diaphragm cavity 503 pass through. The first spring 507 is set between the end of the diaphragm cavity 503 and the fixing plate 505, and the first spring 507 is sleeved on the outside of the slide rod 506. On the one hand, it provides a reset preload for the diaphragm 504. On the other hand, through the preset spring stiffness, it makes the pressure value inside the tank and the axial displacement of the slide rod 506 form a precise linear correspondence, ensuring the accuracy of the pressure display. The sleeve 508 is coaxially rotatably mounted on the inner plate 501. It is a hollow cylindrical structure with one end open. The end of the slide rod 506 extends into the inner cavity of the sleeve 508. A rotary fitting assembly is provided between the slide rod 506 and the sleeve 508. The rotary fitting assembly is used to convert the axial linear sliding of the slide rod 506 into the circumferential rotational motion of the sleeve 508. The first permanent magnet 511 is fixed at one end of the sleeve 508 facing the inner wall of the gas storage tank 1, and the second permanent magnet 512 is fixed at the rotating output end of the pressure display mechanism 3. The second permanent magnet 512 and the first permanent magnet 511 are arranged coaxially opposite each other. The wall of the gas storage tank 1 is located between the first permanent magnet 511 and the second permanent magnet 512. The two form a non-contact transmission cooperation through magnetic coupling.

[0027] Positive overpressure action process: When the gas pressure inside the gas storage tank 1 increases, the internal pressure acts on the outer surface of the diaphragm 504, pushing the diaphragm 504 to elastically deform towards the inner side of the diaphragm cavity 503. The diaphragm 504 drives the fixed plate 505 to move synchronously towards the support sleeve 502, thereby pushing the slide rod 506 to slide axially towards the inner plate 501, while compressing the first spring 507 to store the reset potential energy. The axial sliding of the slide rod 506 is converted into the circumferential rotation of the sleeve 508 through the rotary fitting assembly. The sleeve 508 drives the first permanent magnet 511 at the end to rotate synchronously. The first permanent magnet 511 drives the second permanent magnet 512 on the other side of the tank wall to rotate synchronously through magnetic coupling, thereby driving the pressure display mechanism 3 to complete the pressure display, realizing the contactless and leak-free transmission of the internal pressure signal to the outside of the tank.

[0028] Reverse negative pressure action process: When a negative pressure state occurs inside the gas storage tank 1, the pressure inside the tank is lower than the external atmospheric pressure. Under the action of the internal and external pressure difference, the diaphragm 504 undergoes a reverse concave deformation towards the inner cavity of the gas storage tank 1, causing the fixed plate 505 and the slide rod 506 to slide away from the inner plate 501, and the first spring 507 extends synchronously. The reverse axial sliding of the slide rod 506 is converted into the reverse circumferential rotation of the sleeve 508 through the rotational fitting assembly. Then, through the magnetic coupling of the first permanent magnet 511 and the second permanent magnet 512, the pointer 302 of the pressure display mechanism 3 is driven to rotate towards the negative pressure range, realizing the display of the negative pressure state and subsequent warning triggering, which is suitable for the negative pressure instability protection requirements of lightweight thin-walled tanks.

[0029] Automatic reset process: When the pressure inside the tank returns to normal pressure or normal operating range, the pressure difference on both sides of the diaphragm 504 disappears. Under the elastic reset force of the first spring 507, the slide bar 506, the fixed plate 505 and the diaphragm 504 are pushed back to the initial position. At the same time, the sleeve 508 and the first permanent magnet 511 are rotated in the opposite direction to reset. The pointer 302 of the pressure display mechanism 3 returns to the corresponding scale position at the same time, and the equipment returns to normal standby state.

[0030] In this embodiment, the rotary fitting assembly includes a spiral groove 509 formed on the inner wall of the sleeve 508 and a slider 510 fixed to the end of the slide rod 506. The slider 510 is embedded in the spiral groove 509 and slides in cooperation with the spiral groove 509. The spiral groove 509 is a closed spiral groove with equal lead. The axial displacement of the slider 506 is linearly related to the rotation angle of the sleeve 508.

[0031] When the slide rod 506 slides linearly along the axial direction, the slider 510 fixed at the end of the slide rod 506 moves synchronously along the axial direction. Since the slider 510 is embedded in the spiral groove 509 of the sleeve 508, the axially moving slider 510 will generate a circumferential component force on the side wall of the spiral groove 509, thereby pushing the sleeve 508 to rotate around its own axis. Since the spiral groove 509 adopts an equal lead design, the axial displacement of the slide rod 506 and the rotation angle of the sleeve 508 have a strict linear correspondence, thereby ensuring that the pressure value inside the tank corresponds one-to-one with the rotation angle of the pointer 302 and the display scale of the dial 303, ensuring the accuracy of the pressure display. At the same time, the forward and reverse linear sliding of the slide rod 506 can drive the forward and reverse rotation of the sleeve 508, adapting to the transmission requirements of both overpressure and negative pressure working conditions.

[0032] In this embodiment, the gear transmission mechanism 6 includes an incomplete gear 601, a double-sided rack 602, a second spring 603, a limiting rod 604, a large gear 605, a small gear 606, a first bevel gear 607, and a second bevel gear 608. The incomplete gear 601 is fixed to the rotating output end of the pressure display mechanism 3. The incomplete gear 601 is coaxially fixed to the middle of the first shaft 301 and rotates synchronously with the first shaft 301. It serves as the power input end of the gear transmission mechanism 6. Through the segmented design of the gear teeth and the toothless section, the on / off control of the transmission is realized. The limiting rod 604 is fixed to the inner wall of the outer shell 2. The double-sided rack 602 is slidably mounted on the limiting rod 604, providing sliding guide support for the double-sided rack 602. One side of the tooth surface of the double-sided rack 602 meshes with the incomplete gear 601. The second spring 603 is sleeved on the limiting rod 604. The two ends of the second spring 603 abut against the inner wall of the outer shell 2 and the end of the double-sided rack 602, respectively, storing elastic potential energy under normal working conditions, and used to drive the double-sided rack 602 to reset. The large gear 605 is rotatably installed inside the outer casing 2. The large gear 605 meshes with the other tooth surface of the double-sided rack 602, converting the linear motion of the rack into rotational motion. The small gear 606 meshes with the outside of the large gear 605. The first bevel gear 607 is coaxially fixed to the shaft end of the small gear 606. The second bevel gear 608 is rotatably installed on the top of the outer casing 2, and the second bevel gear 608 meshes with the first bevel gear 607 to form a 90-degree reversing transmission, while completing the second-stage speed increase. The second bevel gear 608 is the output end of the gear transmission mechanism 6.

[0033] During the gas injection phase, the incomplete gear 601 and the double-sided rack 602 are in a meshing state. When the pressure inside the tank is within the rated normal operating range, the first shaft 301 drives the incomplete gear 601 to rotate slowly. The teeth of the incomplete gear 601 drive the double-sided rack 602 to slide slowly along the limit rod 604, while compressing the second spring 603, so that the double-sided rack 602 is kept in the preset normal operating position. At this time, the double-sided rack 602 and the large gear 605 mesh and drive at the same time. The subsequent large gear 605, small gear 606, and bevel gear set also rotate slowly together. The mechanical bell alarm mechanism 4 is rotating slowly and does not trigger the alarm. When the pressure inside the tank reaches the set threshold, the toothless section of the incomplete gear 601 rotates to a position opposite to the double-sided rack 602. At this time, the meshing relationship between the incomplete gear 601 and the double-sided rack 602 is completely disengaged. Under the elastic restoring force of the second spring 603, the double-sided rack 602 slides back quickly along the limit rod 604. During the rapid sliding of the double-sided rack 602, the lower tooth surface drives the large gear 605 to rotate rapidly. The large gear 605 drives the meshing small gear 606 to complete the first-stage speed increase. The small gear 606 drives the coaxial first bevel gear 607 to rotate synchronously. The first bevel gear 607 drives the second bevel gear 608 to complete the reversal and second-stage speed increase through vertical meshing. Finally, the rotational power is transmitted at high speed to the mechanical ringing warning mechanism 4, driving the warning mechanism to trigger a continuous ringing warning and triggering a pressure abnormality warning.

[0034] During the depressurization process, when the pressure inside the tank drops from the overpressure range to the normal operating range, the first shaft 301 drives the incomplete gear 601 to rotate in the opposite direction. The toothed section of the incomplete gear 601 re-meshes with the double-sided rack 602, causing the double-sided rack 602 to move in the opposite direction along the limit rod 604. The second spring 603 extends synchronously. When the pressure inside the tank continues to drop to normal pressure and enters a negative pressure state, reaching the negative pressure warning threshold, the first shaft 301 drives the incomplete gear 601 to continue rotating in the opposite direction, causing the toothless section of the incomplete gear 601 to rotate to a position opposite to the double-sided rack 602. The meshing relationship between the two is released. Under the elastic force of the second spring 603, the double-sided rack 602 quickly resets, thereby driving the mechanical bell warning mechanism 4 to trigger the alarm, realizing the safety protection of the negative pressure instability condition. During abnormally rapid rise and fall, whether in the pressurization and gas injection stage or in the depressurization process, the incomplete gear 601 will rotate at a higher speed than normal. At this time, the double-sided rack 602 moves rapidly, and after being accelerated by the transmission structure, it transmits the rotational power to the mechanical bell warning mechanism 4 at high speed, driving the warning mechanism to trigger a continuous alarm.

[0035] In this embodiment, the mechanical alarm mechanism 4 includes a second shaft 401, a crossbar 402, a pressure plate 403, a metal ring 404, and a metal cover 405; The lower end of the second shaft 401 is coaxially fixed with the output end of the gear transmission mechanism 6. The crossbar 402 is fixed to the upper end of the second shaft 401. The pressure plate 403 is fixed to both ends of the top of the crossbar 402. The metal ring 404 is limited between the pressure plate 403 and the crossbar 402. The crossbar 402 is a horizontally arranged rod-shaped structure with two sets of pressure plates 403 symmetrically fixed at both ends. A vertical limiting gap is formed between the pressure plate 403 and the crossbar 402. The metal ring 404 is movably limited within this gap and can jump slightly in the vertical direction and deflect slightly in the radial direction. The metal cover 405 is placed on the outside of the metal ring 404. When the metal ring 404 rotates with the second shaft 401, it can collide with the metal cover 405 and emit a warning sound.

[0036] When the second bevel gear 608 of the gear transmission mechanism 6 rotates at high speed, it synchronously drives the second shaft 401 to rotate at high speed around its own axis. The second shaft 401 drives the top crossbar 402 and pressure plate 403 to rotate synchronously at high speed. During the rotation, the pressure plate 403 drives the metal ring 404 to rotate synchronously. Under the action of centrifugal force, the metal ring 404 generates small radial and axial jumps, continuously impacting the inner wall of the outer metal cover 405. At the same time, the end of the pressure plate 403 also synchronously impacts the metal cover 405. The continuous impact between the metal ring 404 and the metal cover 405 produces a high-decibel metallic sound. After being amplified by the resonant cavity of the metal cover 405, it spreads to the surroundings, realizing the sound warning on site and reminding the on-site personnel that the pressure inside the tank is abnormal, so as to troubleshoot and deal with the fault in time. When the gear transmission mechanism 6 stops driving, the second shaft 401 stops rotating, the impact action stops, and the warning sound ends. During the slow rotation of the second shaft 401, the centrifugal force on the metal ring 404 is small and insufficient to produce an impact sound. Within the normal operating pressure range, the pressure inside the tank changes slowly. The first shaft 301 drives the incomplete gear 601, the gear transmission mechanism 6, and the second shaft 401 to rotate synchronously at a slow speed. The centrifugal force on the metal ring 404 is extremely small and cannot effectively collide with the metal cover 405. Therefore, no warning sound will be emitted, and only a real-time stable pressure display will be achieved.

[0037] In this embodiment, the tooth segment of the incomplete gear 601 corresponds to the normal pressure range of the gas storage tank 1. When the overpressure warning threshold or negative pressure warning threshold is reached inside the gas storage tank 1, the toothless segment of the incomplete gear 601 rotates to a position opposite to the double-sided rack 602. The double-sided rack 602 quickly resets and drives the mechanical ringing warning mechanism 4 to trigger the warning. When the internal pressure of the gas storage tank 1 rises or falls abnormally, the incomplete gear 601 can quickly drive the double-sided rack 602 to move and trigger the mechanical ringing warning mechanism 4 to trigger the warning.

[0038] Overpressure warning scenario: When the pressure inside the tank continues to rise, the first shaft 301 drives the incomplete gear 601 to rotate in the forward direction. When the set overpressure warning threshold is reached, the toothless section of the incomplete gear 601 rotates to a position opposite to the double-sided rack 602, and the meshing relationship between the two is completely disengaged. The double-sided rack 602 quickly resets under the action of the second spring 603, driving the mechanical bell warning mechanism 4 to sound, thus realizing accurate warning of overpressure conditions.

[0039] Negative pressure warning scenario: When negative pressure occurs inside the tank, the first shaft 301 drives the incomplete gear 601 to rotate in the opposite direction. When the set negative pressure instability warning threshold is reached, the toothless section of the incomplete gear 601 is also rotated to the position opposite to the double-sided rack 602, disengaging the meshing relationship and triggering the warning, thus achieving full coverage warning of negative pressure instability conditions.

[0040] Pressure abnormal rise and fall early warning scenario: When the pressure inside the tank rises or falls abnormally and rapidly, even if the pressure value has not yet reached the fixed overpressure / negative pressure threshold, the first shaft 301 will drive the incomplete gear 601 to rotate rapidly, thereby driving the mechanical bell early warning mechanism 4 to sound, realizing early warning of sudden pressure changes, identifying sudden failures such as compressor malfunction, pipeline burst and leakage, valve misoperation, etc., and further improving the safety redundancy of the equipment.

[0041] In this embodiment, an acrylic transparent plate is provided at the observation port on the end face of the outer shell 2. An aging-resistant sealing strip is provided at the joint between the acrylic transparent plate and the observation port to ensure sealing performance. The interior of the outer shell 2 is in a sealed state, which improves the environmental adaptability and service life of the equipment under harsh working conditions such as outdoor, high corrosion, and high humidity.

[0042] In this embodiment, the built-in pressure warning transmission mechanism 5, pressure display mechanism 3, gear transmission mechanism 6, and mechanical alarm mechanism 4 are all purely mechanical structures. They do not require an external power supply or electronic sensing elements. They achieve real-time display of tank pressure and automatic warning for multiple operating conditions through pure mechanical linkage.

[0043] It completely eliminates the dependence on power supply systems and electronic components, fundamentally preventing problems such as power outages, line faults, aging and drifting of electronic components, and early warning failures caused by electromagnetic interference, making it more applicable.

[0044] In this embodiment, two sets of limiting rods 604 are provided, and sliding holes that cooperate with the limiting rods 604 are symmetrically opened on both sides inside the double-sided rack 602.

[0045] To ensure that the double-sided rack 602 maintains a horizontal posture during linear reciprocating sliding, and to prevent deflection, swaying, or jamming, thereby ensuring that the upper and lower tooth surfaces of the double-sided rack 602 always maintain precise meshing with the incomplete gear 601 and the large gear 605.

[0046] The solutions in Embodiment 1 and Embodiment 2 will be further described below with reference to their specific working methods. The change in gas pressure inside the gas storage tank 1 directly acts on the diaphragm 504 of the built-in pressure warning transmission mechanism 5. The diaphragm 504 converts the pressure change into the axial linear displacement of the slide bar 506. Then, through the cooperation of the slider 510 and the spiral groove 509, the linear displacement is converted into the circumferential rotation of the sleeve 508. The sleeve 508 drives the first permanent magnet 511 to rotate synchronously. Through magnetic coupling non-contact transmission, it drives the second permanent magnet 512 outside the tank to rotate synchronously with the first shaft 301. On the one hand, the pressure value inside the tank is displayed in real time by the pointer 302 and the dial 303. On the other hand, it drives the incomplete gear 601 to rotate synchronously.

[0047] When the pressure inside the tank is within the normal operating range, the toothed section of the incomplete gear 601 remains engaged with the double-sided rack 602, and the warning mechanism does not activate. When the pressure inside the tank exceeds or falls below the normal operating range, the first shaft 301 drives the incomplete gear 601 to rotate to the toothless section, disengaging it from the double-sided rack 602. The double-sided rack 602 then quickly resets under the action of the second spring 603, causing the large gear 605, small gear 606, and bevel gear set to rotate rapidly. This, in turn, drives the mechanical ringing warning mechanism 4 to rotate at high speed, emitting a high-decibel warning sound through metal impact, thus providing on-site warning of abnormal operating conditions. When the pressure rises or falls abnormally, the double-sided rack 602 also moves rapidly, driving the mechanical ringing warning mechanism 4 to rotate at high speed for on-site warning. When the pressure inside the tank returns to the normal range, all mechanisms automatically reset, the warning stops, and the equipment returns to normal pressure display status.

[0048] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A lightweight, corrosion-resistant gas storage tank with a built-in pressure warning device, comprising a gas storage tank body (1), wherein air inlets and exhaust outlets are symmetrically provided on both sides of the gas storage tank body (1), and a drain outlet and supporting legs are provided at the bottom of the gas storage tank body (1), characterized in that: The outer wall of the gas storage tank (1) is fixed with an outer shell (2), and the inside of the outer shell (2) is equipped with a pressure display mechanism (3) to display the gas pressure inside the gas storage tank (1) in real time. A mechanical bell alarm mechanism (4) is provided on the top of the outer shell (2). A gear transmission mechanism (6) is provided between the mechanical bell alarm mechanism (4) and the pressure display mechanism (3). The gear transmission mechanism (6) is connected to the rotating output end of the pressure display mechanism (3) and the trigger end of the mechanical bell alarm mechanism (4) to trigger an alarm when the overpressure alarm threshold, the negative pressure alarm threshold and the abnormal pressure rise and fall conditions are reached inside the gas storage tank (1). An internal pressure warning transmission mechanism (5) is provided in the inner cavity of the gas tank body (1). The internal pressure warning transmission mechanism (5) can generate mechanical action according to the change of gas pressure inside the gas tank body (1), and drive the rotating part of the pressure display mechanism (3) to rotate through magnetic coupling non-contact transmission. When the pressure inside the gas storage tank (1) is abnormal, the built-in pressure warning transmission mechanism (5) drives the rotating part of the pressure display mechanism (3) to rotate to the abnormal range, and simultaneously releases the locking state of the gear transmission mechanism (6). The gear transmission mechanism (6) completes power transmission, reversal and speed increase, and drives the mechanical bell warning mechanism (4) to continuously emit warning sounds. When the pressure rises or falls abnormally, the gear transmission mechanism (6) drives the mechanical bell warning mechanism (4) to continuously emit warning sounds, realizing on-site warning of abnormal conditions.

2. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 1, characterized in that: The pressure display mechanism (3) includes a first shaft (301), a pointer (302), and a dial (303); The first shaft (301) is rotatably installed inside the outer casing (2). The pointer (302) is fixed at one end of the first shaft (301) facing the observation port of the outer casing (2). The dial (303) is fixed at the observation port of the outer casing (2), and the positions of the dial (303) and the pointer (302) correspond to each other. The first shaft (301) is the rotating output end of the pressure display mechanism (3).

3. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 1, characterized in that: The built-in pressure warning transmission mechanism (5) includes an inner plate (501), a support sleeve (502), a diaphragm cavity (503), a diaphragm (504), a fixing plate (505), a slide rod (506), a first spring (507), a sleeve (508), a first permanent magnet (511), and a second permanent magnet (512); The inner plate (501) is fixed to the inner wall of the gas storage tank body (1). A support sleeve (502) is fixedly installed on the side of the inner plate (501) facing the inner cavity of the gas storage tank body (1). A membrane cavity (503) is fixed at the end of the support sleeve (502) away from the inner plate (501). A diaphragm (504) is sealed and fixed at the inner end of the membrane cavity (503). The outer surface of the diaphragm (504) is in direct contact with the medium inside the gas storage tank body (1). A fixing plate (505) is fixed at the center of the diaphragm (504), and a sliding rod (506) is fixed at the center of the fixing plate (505). The sliding rod (506) slides out of the diaphragm cavity (503) and extends into the interior of the support sleeve (502). A first spring (507) is disposed between the end of the diaphragm cavity (503) and the fixing plate (505), and the first spring (507) is sleeved on the outside of the sliding rod (506). The sleeve (508) is coaxially rotatably mounted on the inner plate (501), and the end of the slide rod (506) extends into the inner cavity of the sleeve (508). A rotary fitting assembly is provided between the slide rod (506) and the sleeve (508). The rotary fitting assembly is used to convert the axial linear sliding of the slide rod (506) into the circumferential rotational motion of the sleeve (508). The first permanent magnet (511) is fixed at one end of the sleeve (508) facing the inner wall of the gas storage tank (1), and the second permanent magnet (512) is fixed at the rotating output end of the pressure display mechanism (3). The second permanent magnet (512) and the first permanent magnet (511) are arranged coaxially opposite each other. The wall of the gas storage tank (1) is located between the first permanent magnet (511) and the second permanent magnet (512). The two are coupled by magnetic force to form a non-contact transmission cooperation.

4. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 3, characterized in that: The rotary fitting assembly includes a spiral groove (509) formed on the inner wall of the sleeve (508) and a slider (510) fixed to the end of the slide bar (506). The slider (510) is embedded in the spiral groove (509) and slides in the spiral groove (509). The spiral groove (509) is a closed spiral groove with equal lead. The axial displacement of the slider (506) is linearly related to the rotation angle of the sleeve (508).

5. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 1, characterized in that: The gear transmission mechanism (6) includes an incomplete gear (601), a double-sided rack (602), a second spring (603), a limit rod (604), a large gear (605), a small gear (606), a first bevel gear (607), and a second bevel gear (608). The incomplete gear (601) is fixed to the rotating output end of the pressure display mechanism (3), the limiting rod (604) is fixed to the inner wall of the outer shell (2), the double-sided rack (602) is slidably mounted on the limiting rod (604), and one side of the tooth surface of the double-sided rack (602) meshes with the incomplete gear (601). The second spring (603) is sleeved on the limiting rod (604). The two ends of the second spring (603) abut against the inner wall of the outer shell (2) and the end of the double-sided rack (602) respectively, and are used to drive the double-sided rack (602) to reset. The large gear (605) is rotatably installed inside the outer casing (2). The large gear (605) meshes with the other side of the tooth surface of the double-sided rack (602). The small gear (606) meshes with the outside of the large gear (605). The first bevel gear (607) is coaxially fixed to the shaft end of the small gear (606). The second bevel gear (608) is rotatably installed on the top of the outer casing (2) and meshes with the first bevel gear (607) for transmission. The second bevel gear (608) is the output end of the gear transmission mechanism (6).

6. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 1, characterized in that: The mechanical alarm mechanism (4) includes a second shaft (401), a crossbar (402), a pressure plate (403), a metal ring (404), and a metal cover (405). The lower end of the second shaft (401) is coaxially fixed with the output end of the gear transmission mechanism (6). The crossbar (402) is fixed at the upper end of the second shaft (401). The pressure plate (403) is fixed at both ends of the top of the crossbar (402). The metal ring (404) is limited between the pressure plate (403) and the crossbar (402). The metal cover (405) is placed on the outside of the metal ring (404). When the metal ring (404) rotates with the second shaft (401), it can collide with the metal cover (405) and emit a warning sound.

7. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 5, characterized in that: The toothed section of the incomplete gear (601) corresponds to the normal pressure range of the gas storage tank body (1). When the gas storage tank body (1) reaches the overpressure warning threshold or the negative pressure warning threshold, the toothless section of the incomplete gear (601) rotates to the position opposite to the double-sided rack (602). The double-sided rack (602) quickly resets and drives the mechanical ringing warning mechanism (4) to trigger the warning. When the internal pressure of the gas storage tank body (1) rises or falls abnormally, the double-sided rack (602) can be quickly driven to move by the incomplete gear (601) and trigger the mechanical ringing warning mechanism (4) to trigger the warning.

8. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 1, characterized in that: An acrylic transparent plate is provided at the observation port on the end face of the outer shell (2), and the inside of the outer shell (2) is sealed.

9. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 1, characterized in that: The built-in pressure warning transmission mechanism (5), pressure display mechanism (3), gear transmission mechanism (6), and mechanical alarm mechanism (4) are all purely mechanical structures. They do not require external power supply and have no electronic sensing elements. They achieve real-time display of tank pressure and automatic warning of multiple working conditions through pure mechanical linkage.

10. The lightweight corrosion-resistant gas storage tank with built-in pressure warning device according to claim 5, characterized in that: The limiting rod (604) is provided in two sets, and the double-sided rack (602) has symmetrical sliding holes on both sides inside that cooperate with the limiting rod (604).

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