Oil leakage monitoring device for oil storage tank

Abstract

The present invention relates to the technical field of oil leakage monitoring, and discloses an oil leakage monitoring device for an oil storage tank, comprising: a fixed shell and a top plate, a side cover is fixedly installed on one side of the fixed shell, a power distribution chamber, a transmission chamber and a precision adjustment chamber are respectively arranged inside the fixed shell, the inner wall of the transmission chamber is rotatably connected with a transmission shaft, the outer wall of the transmission shaft is fixedly sleeved with a gear, the inner wall of the transmission chamber is slidably connected with a rack, and one side of the rack is meshed with the outer wall of the gear, and a buoyancy conversion mechanism is installed on the inner wall of the rack. The oil leakage monitoring device for the oil storage tank can use the buoyancy conversion mechanism to convert buoyancy into thrust to lift the counterweight mechanism and maintain a certain height, and can drive the counterweight mechanism to move downward after the liquid level formed when the oil leaks inside the oil storage tank drops, and the copper block is driven by the transmission of the transmission shaft, gear, rack, push rod, connecting rod, slide, guide rail and slider to connect and trigger the buzzer to sound an alarm.

Description

Technical Field

[0001] The invention relates to the technical field of oil leakage monitoring, in particular to an oil leakage monitoring device for an oil storage tank. Background Art

[0002] Floating production storage and offloading vessels are "offshore crude oil processing plants" that integrate crude oil production, storage, and export functions. They are the mainstream production facilities for global marine oil and gas development.

[0003] Inside the floating production storage and offloading vessel, oil needs to be stored in oil tanks. Due to the material or transportation environment, there is a risk of oil leakage in the oil tanks. As the volume of the oil tanks is relatively large, there is a certain time interval between routine inspections, and oil leakage in the oil tanks cannot be detected in time. Therefore, an oil leakage monitoring device for the oil tanks is required to enable timely alarm when there is oil leakage in the oil tanks. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides an oil leakage monitoring device for an oil storage tank, which solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solution: an oil leakage monitoring device for an oil storage tank comprises: a fixed shell and a top plate, a side cover is fixedly installed on one side of the fixed shell, a power distribution chamber, a transmission chamber and a precision adjustment chamber are respectively arranged inside the fixed shell, the inner wall of the transmission chamber is rotatably connected with a transmission shaft, a gear is fixedly sleeved on the outer wall of the transmission shaft, a rack is slidably connected with the inner wall of the transmission chamber, and one side of the rack is meshed with the outer wall of the gear, a buoyancy conversion mechanism is installed on the inner wall of the rack, a counterweight mechanism is arranged on the side of the rack away from the gear, a push rod is fixedly sleeved on the outer wall of the transmission shaft, the rotation radius of the push rod is larger than the rotation radius of the gear, one end of the push rod is rotatably connected with a connecting rod, and the power distribution chamber is fixedly sleeved with a transmission shaft, a gear is fixedly sleeved on the outer wall of the transmission shaft, a rack is slidably connected with the inner wall of the transmission chamber, and one side of the rack is meshed with the outer wall of the gear, a buoyancy conversion mechanism is installed on the inner wall of the rack, a counterweight mechanism is arranged on the side of the rack away from the gear, a push rod is fixedly sleeved on the outer wall of the transmission shaft, the rotation radius of the push rod is larger than the rotation radius of the gear, one end of the push rod is rotatably connected with a connecting rod, A sliding opening is provided through the inner wall, a guide rail is fixedly connected to a side of the fixed shell close to the side cover, and the guide rail is located on one side of the sliding opening, a slider is slidably connected to the inner wall of the guide rail, a copper block is fixedly connected to one side of the slider, a power on and off mechanism is provided on the inner wall of the power distribution cavity, the copper block is located on one side of the power on and off mechanism, a buzzer is installed on the inner wall of the power distribution cavity, a precision adjustment mechanism is provided inside the precision adjustment cavity, a length adjustment mechanism is provided on the top of the rack, a side plate is fixedly connected to a side of the fixed shell away from the side cover, a guide opening is provided on one side of the fixed shell, a first wire and a second wire are respectively provided on one side of the buzzer, and a third wire is provided on one side of the power on and off mechanism.

[0006] Preferably, the buzzer is electrically connected to the on-off mechanism via a second wire, and a switch is installed inside the third wire.

[0007] Preferably, the buoyancy conversion mechanism includes a support rod and a float barrel, the support rod is installed on the inner wall of the rack, and the outer wall of the support rod is slidably connected to the inner wall of the fixed shell, the float barrel is fixedly sleeved on the outer wall of the support rod, and the float barrel is located at one end of the support rod away from the rack.

[0008] Preferably, an air cavity is provided inside the float barrel, and the number of the air cavities is plural, the outer wall of the support rod is provided with a first external thread, and a rectangular groove is provided at one end of the support rod away from the float barrel.

[0009] Preferably, the counterweight mechanism includes a mounting frame and a counterweight block, the mounting frame is integrally connected to the side of the rack away from the gear, the counterweight block is installed on the inner wall of the mounting frame, and the outer wall of the counterweight block is provided with a slot, and the inner wall of the mounting frame is provided with a block, and the counterweight block is clamped with the counterweight block through the slot and the block.

[0010] Preferably, threaded holes are formed on both sides of the rack, and a first internal thread is provided inside the threaded hole, and the threaded hole is threadedly connected to the support rod through the first internal thread and the first external thread, and buckle grooves are formed on both sides of the counterweight block.

[0011] Preferably, the power on and off mechanism includes an insulating frame, a support block, a spring clip, a reinforcement frame and a support column, the insulating frame is fixedly connected to the inner wall of the distribution cavity, the support block is integrally connected to the top of the insulating frame, the spring clip is fixedly connected to one side of the support block, the reinforcement frame is fixedly sleeved on the outer wall of the spring clip, the support column is integrally connected to one side of the insulating frame, and the spring clip is movably connected to the support column, and the number of spring clips is two, and the two spring clips are relatively distributed, and one side of the two spring clips is slidably connected to the outer wall of the copper block.

[0012] Preferably, the precision adjustment mechanism includes a limit frame, a threaded rod, a threaded barrel, a push frame and a spring, the limit frame is fixedly connected to the inner wall of the precision adjustment chamber, the threaded rod is rotatably connected to the inner wall of the top plate, the threaded barrel is installed on the outer wall of the threaded rod, and the inner wall of the threaded barrel is provided with a second internal thread, and the outer wall of the threaded rod is provided with a second external thread, and the threaded barrel is threadedly connected to the threaded rod through the second internal thread and the second external thread, the push frame is fixedly sleeved on the outer wall of the threaded barrel, and the outer wall of the push frame is slidably connected to the inner wall of the limit frame, the spring is movably sleeved on the outer wall of the threaded rod, and one end of the spring is movably connected to one side of the top plate, and the other end of the spring is movably connected to the upper surface of the push frame.

[0013] Preferably, the precision adjustment mechanism also includes a spring sheet, a first torsion block, a pressure block, a guide hole and a guide column, the spring sheet is fixedly connected to the inner bottom wall of the precision adjustment chamber, and a slideway is provided between the precision adjustment chamber and the transmission chamber, and the pressure block is slidably connected to the inner wall of the slideway, the first torsion block is fixedly installed on the top of the threaded rod, the guide hole passes through the outer wall of the limit frame, the guide column is integrally connected to both sides of the pressure block, and the outer wall of the guide column is slidably connected to the inner wall of the guide hole.

[0014] Preferably, the length adjustment mechanism includes a sliding bar, a mounting column and a second torsion block, the mounting column is rotatably connected to the inner wall of the top plate, the sliding bar is integrally connected to one end of the mounting column, and the surface of the sliding bar is slidably connected to the inner wall of the rectangular groove, and the second torsion block is fixedly mounted on the end of the mounting column away from the sliding bar.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The oil leakage monitoring device of the oil storage tank can utilize the buoyancy conversion mechanism to convert the buoyancy into thrust to lift the counterweight mechanism and maintain it at a certain height, and can drive the counterweight mechanism to move downward after the liquid level formed when the oil leaks inside the oil storage tank drops, and utilize the transmission of the transmission shaft, gear, rack, push rod, connecting rod, slide, guide rail and slider to push the copper block to connect and trigger the buzzer to sound an alarm.

[0017] 2. The oil leakage monitoring device of the oil storage tank is provided with a rack and a precision adjustment mechanism so that the push frame can be pushed by twisting the first twist block, thereby pushing the spring, changing the position of the spring fulcrum, and then changing the elastic force of the spring, thereby controlling the thrust of the pressure block on the rack, thereby controlling the friction force of the pressure block on the rack, and adjusting the smoothness and precision of the sliding of the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the fixed shell of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the precision adjustment mechanism of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the guide rail position of the present invention;

[0022] Figure 5This is a schematic diagram of the connection structure between the copper block and the power on / off mechanism of the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of the power on / off mechanism of the present invention;

[0024] Figure 7 This is a schematic diagram of the connection structure of the gear and rack of the present invention;

[0025] Figure 8 It is a side sectional view of the buoyancy conversion mechanism of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of the counterweight block position of the present invention;

[0027] Fig.10 This is a schematic diagram of the internal explosion structure of the counterweight mechanism of the present invention;

[0028] Fig.11 It is a schematic diagram of the connection structure between the limit frame and the pressing block of the present invention;

[0029] Fig.12 For the present invention Fig.11 Enlarged view of point A in the middle;

[0030] Fig.13 It is a schematic diagram of the internal explosion structure of the precision adjustment mechanism of the present invention.

[0031] In the figure: 1, fixed shell; 2, top plate; 3, side cover; 4, power distribution chamber; 5, transmission chamber; 6, precision adjustment chamber; 7, transmission shaft; 8, gear; 9, rack; 1001, support rod; 1002, float barrel; 1003, rectangular groove; 1004, air chamber; 1101, mounting frame; 1102, counterweight block; 1103, threaded hole; 1104, buckle groove; 12, push rod; 13, connecting rod; 14, sliding mouth; 15, guide rail; 16, slider; 17, copper block; 1801, insulating frame; 1802, support block; 1803, Shrapnel; 1804, reinforcing frame; 1805, supporting column; 19, buzzer; 2001, limiting frame; 2002, threaded rod; 2003, spring; 2004, threaded tube; 2005, pushing frame; 2006, spring; 2007, first twist block; 2008, pressing block; 2009, guide hole; 2010, guide column; 2101, sliding bar; 2102, mounting column; 2103, second twist block; 22, side panel; 23, guide port; 24, first wire; 25, second wire; 26, third wire; 27, switch. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-13 The oil leakage monitoring device of the oil storage tank comprises: a fixed shell 1 and a top plate 2, a side cover 3 is fixedly installed on one side of the fixed shell 1, a power distribution chamber 4, a transmission chamber 5 and a precision adjustment chamber 6 are respectively arranged inside the fixed shell 1, a transmission shaft 7 is rotatably connected to the inner wall of the transmission chamber 5, a gear 8 is fixedly sleeved on the outer wall of the transmission shaft 7, a rack 9 is slidably connected to the inner wall of the transmission chamber 5, and one side of the rack 9 is meshed with the outer wall of the gear 8, a buoyancy conversion mechanism is installed on the inner wall of the rack 9, a counterweight mechanism is arranged on the side of the rack 9 away from the gear 8, a push rod 12 is fixedly sleeved on the outer wall of the transmission shaft 7, and the rotation of the push rod 12 The radius is larger than the rotation radius of the gear 8, so as to extend the force arm and ensure that a small drop in the liquid level can trigger a larger rise and fall of the slider 16. One end of the push rod 12 is rotatably connected to the connecting rod 13. A sliding opening 14 is provided through the inner wall of the distribution chamber 4. A guide rail 15 is fixedly connected to the side of the fixed shell 1 close to the side cover 3, and the guide rail 15 is located on one side of the sliding opening 14. The inner wall of the guide rail 15 is slidably connected to the slider 16. A copper block 17 is fixedly connected to one side of the slider 16. The inner wall of the distribution chamber 4 is provided with an on-off mechanism, and the copper block 17 is located on one side of the on-off mechanism. A buzzer is installed on the inner wall of the distribution chamber 4. The precision adjustment chamber 6 is provided with a precision adjustment mechanism, the top of the rack 9 is provided with a length adjustment mechanism, the side of the fixed shell 1 away from the side cover 3 is fixedly connected with a side plate 22, a guide port 23 is provided on one side of the fixed shell 1, a first wire 24 and a second wire 25 are provided on one side of the buzzer 19, and a third wire 26 is provided on one side of the power-on / off mechanism, through the fixed shell 1, the top plate 2, the side cover 3, the power distribution chamber 4, the transmission chamber 5, the precision adjustment chamber 6, the transmission shaft 7, the gear 8, the rack 9, the buoyancy conversion mechanism, the counterweight mechanism, the push rod 12, the connecting rod 13, the sliding port 14 , guide rail 15, slider 16, copper block 17, power on / off mechanism, buzzer 19, length adjustment mechanism, side panel 22, guide port 23, first wire 24, second wire 25, third wire 26 and switch 27, can utilize the buoyancy conversion mechanism to convert buoyancy into thrust to lift the counterweight mechanism and maintain a certain height, can drive the counterweight mechanism downward after the liquid level formed when oil leaks inside the oil storage tank drops, utilize the transmission shaft 7, gear 8, rack 9, push rod 12, connecting rod 13, slide port 14, guide rail 15 and slider 16 to drive and push the copper block 17 to turn on the trigger buzzer 19 to sound an alarm.

[0034] The buzzer 19 is electrically connected to the on-off mechanism through the second wire 25, and a switch 27 is installed inside the third wire 26 to control the on-off of the total circuit. The second wire 25 and the third wire 26 are electrically connected to the power supply to power the buzzer 19.

[0035] Among them; the buoyancy conversion mechanism includes a support rod 1001 and a float 1002, the support rod 1001 is installed on the inner wall of the rack 9, and the outer wall of the support rod 1001 is slidably connected to the inner wall of the fixed shell 1, the float 1002 is fixedly sleeved on the outer wall of the support rod 1001, and the float 1002 is located at one end of the support rod 1001 away from the rack 9, so as to convert buoyancy into thrust.

[0036] Among them; an air cavity 1004 is provided inside the float 1002, and the number of air cavities 1004 is multiple, the outer wall of the support rod 1001 is provided with a first external thread, and a rectangular groove 1003 is provided at one end of the support rod 1001 away from the float 1002, so as to ensure that the float 1002 still has a certain buoyancy after a small damage.

[0037] Among them, the counterweight mechanism includes a mounting frame 1101 and a counterweight block 1102, the mounting frame 1101 is integrally connected to the side of the rack 9 away from the gear 8, the counterweight block 1102 is installed on the inner wall of the mounting frame 1101, and the outer wall of the counterweight block 1102 is provided with a slot, and the inner wall of the mounting frame 1101 is provided with a block, and the counterweight block 1102 is connected with the counterweight block 1102 through the slot and the block to facilitate the replacement of the counterweight.

[0038] Among them, threaded holes 1103 are opened on both sides of the rack 9, and a first internal thread is set inside the threaded hole 1103, and the threaded hole 1103 is threadedly connected to the support rod 1001 through the first internal thread and the first external thread, and buckle grooves 1104 are opened on both sides of the counterweight block 1102 to facilitate the replacement of the counterweight block 1102.

[0039] Among them; the power on and off mechanism includes an insulating frame 1801, a support block 1802, a spring clip 1803, a reinforcement frame 1804 and a support column 1805, the insulating frame 1801 is fixedly connected to the inner wall of the distribution cavity 4, the support block 1802 is integrally connected to the top of the insulating frame 1801, the spring clip 1803 is fixedly connected to one side of the support block 1802, the reinforcement frame 1804 is fixedly sleeved on the outer wall of the spring clip 1803, the support column 1805 is integrally connected to one side of the insulating frame 1801, and the spring clip 1803 is movably connected to the support column 1805, and the number of the spring clips 1803 is two, and the two spring clips 1803 are relatively distributed, and one side of the two spring clips 1803 is slidably connected to the outer wall of the copper block 17 to facilitate the control of circuit on and off.

[0040] Wherein: the precision adjustment mechanism includes a limit frame 2001, a threaded rod 2002, a threaded barrel 2004, a push frame 2005 and a spring 2006, the limit frame 2001 is fixedly connected to the inner wall of the precision adjustment chamber 6, the threaded rod 2002 is rotatably connected to the inner wall of the top plate 2, the threaded barrel 2004 is installed on the outer wall of the threaded rod 2002, and the inner wall of the threaded barrel 2004 is provided with a second internal thread, and the outer wall of the threaded rod 2002 is provided with a second external thread, and the threaded barrel 2004 is provided with a second internal thread. The first outer thread and the second outer thread are threadedly connected to the threaded rod 2002, the push frame 2005 is fixedly sleeved on the outer wall of the threaded tube 2004, and the outer wall of the push frame 2005 is slidably connected to the inner wall of the limit frame 2001, the spring 2006 is movably sleeved on the outer wall of the threaded rod 2002, and one end of the spring 2006 is movably connected to one side of the top plate 2, and the other end of the spring 2006 is movably connected to the upper surface of the push frame 2005, so as to convert the rotational motion into linear motion and push the push frame 2005 to rise and fall.

[0041] Wherein; the precision adjustment mechanism also includes a spring 2003, a first torsion block 2007, a pressure block 2008, a guide hole 2009 and a guide column 2010, the spring 2003 is fixedly connected to the inner bottom wall of the precision adjustment chamber 6, and a slideway is provided between the precision adjustment chamber 6 and the transmission chamber 5, and the pressure block 2008 is slidably connected to the inner wall of the slideway, the first torsion block 2007 is fixedly installed at the top of the threaded rod 2002, the guide hole 2009 penetrates the outer wall of the limit frame 2001, and the guide column 2010 is integrally connected to The two sides of the pressure block 2008 and the outer wall of the guide column 2010 are slidably connected to the inner wall of the guide hole 2009, and the rack 9 and the precision adjustment mechanism are set so that the push frame 2005 can be pushed by twisting the first twist block 2007, thereby pushing the spring 2003, changing the position of the fulcrum of the spring 2003, and then changing the elastic force of the spring 2003, thereby controlling the thrust of the pressure block 2008 on the rack 9, thereby controlling the friction force of the pressure block 2008 on the rack 9, and adjusting the smoothness and precision of the sliding of the rack 9.

[0042] Among them; the length adjustment mechanism includes a slide bar 2101, a mounting column 2102 and a second twist block 2103, the mounting column 2102 is rotatably connected to the inner wall of the top plate 2, the slide bar 2101 is integrally connected to one end of the mounting column 2102, and the surface of the slide bar 2101 is slidably connected to the inner wall of the rectangular groove 1003, and the second twist block 2103 is fixedly installed at one end of the mounting column 2102 away from the slide bar 2101, so as to adjust the length of the support rod 1001 according to the liquid level requirement.

[0043] Working principle: when in use, the device is fixedly installed on the top of the oil storage tank, and an opening is opened between the oil storage tank and the device so that the support rod 1001 can move freely, the mounting frame 1101 is fixed, and the second twist block 2103 is twisted. When the second twist block 2103 rotates, it drives the mounting column 2102 to rotate, and when the mounting column 2102 rotates, it drives the slide bar 2101 to rotate. When the slide bar 2101 rotates, it drives the support rod 1001 to rotate through the slide bar 2101, so that the length of the support rod 1001 is controlled by the thread, so that when the floating barrel 1002 is mostly immersed in the crude oil, it can just push the counterweight mechanism to float up, and the card connection between the mounting frame 1101 and the counterweight block 1102 can be used to replace the counterweight blocks 1102 of different masses to ensure the balance of gravity and buoyancy. When crude oil is injected into the oil storage tank, the buoyancy of the crude oil pushes the floating barrel 1002. As the liquid level rises, the floating barrel 1002, the support rod 1001 and The rack 9 rises, and when the rack 9 rises, it will drive the gear 8 to rotate, and at the same time drive the counterweight mechanism to rise synchronously. When the gear 8 rotates, it drives the transmission shaft 7 to rotate clockwise. When the transmission shaft 7 rotates, it drives the push rod 12 to rotate clockwise. When the push rod 12 rotates clockwise, it will drive the slider 16 to slide down inside the guide rail 15 through the connecting rod 13, thereby driving the copper block 17 to slide out from between the two spring pieces 1803, so that the circuit between the spring pieces 1803 is disconnected, and then the switch 27 is turned on. When oil leaks, the liquid level will drop, and the rack 9, the buoyancy conversion mechanism and the counterweight mechanism will drop with the liquid level. When the rack 9 drops, it will drive the gear 8 to rotate counterclockwise. When the gear 8 rotates, it will drive the push rod 12 to rotate counterclockwise through the transmission shaft 7. When the push rod 12 rotates, it will push the slider 16 to slide up through the connecting rod 13, thereby driving the copper block 17 to slide between the two spring pieces 1803 to connect the spring pieces 1803, thereby connecting the circuit of the buzzer 19 to alarm.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil leakage monitoring device for an oil storage tank, characterized in that: include: A fixed shell (1) and a top plate (2), one side of the fixed shell (1) is fixedly mounted with a side cover (3), the interior of the fixed shell (1) is respectively provided with a power distribution chamber (4), a transmission chamber (5) and a precision adjustment chamber (6), the inner wall of the transmission chamber (5) is rotatably connected with a transmission shaft (7), the outer wall of the transmission shaft (7) is fixedly sleeved with a gear (8), the inner wall of the transmission chamber (5) is slidably connected with a rack (9), one side of the rack (9) is meshingly connected with the outer wall of the gear (8), a buoyancy conversion mechanism is installed on the inner wall of the rack (9), a counterweight mechanism is provided on the side of the rack (9) away from the gear (8), a push rod (12) is fixedly sleeved with the outer wall of the transmission shaft (7), the rotation radius of the push rod (12) is greater than the rotation radius of the gear (8), one end of the push rod (12) is rotatably connected with a connecting rod (13), a sliding opening (14) is penetrated through the inner wall of the power distribution chamber (4), the fixed A guide rail (15) is fixedly connected to a side of the fixed shell (1) close to the side cover (3), and the guide rail (15) is located on a side of the sliding opening (14). A slider (16) is slidably connected to the inner wall of the guide rail (15), and a copper block (17) is fixedly connected to one side of the slider (16). A power-on / off mechanism is provided on the inner wall of the power distribution cavity (4), and the copper block (17) is located on one side of the power-on / off mechanism. A buzzer (19) is installed on the inner wall of the power distribution cavity (4). A precision adjustment mechanism is provided inside the precision adjustment cavity (6). A length adjustment mechanism is provided at the top end of the rack (9). A side plate (22) is fixedly connected to a side of the fixed shell (1) away from the side cover (3). A guide opening (23) is provided on one side of the fixed shell (1). A first wire (24) and a second wire (25) are respectively provided on one side of the buzzer (19), and a third wire (26) is provided on one side of the power-on / off mechanism. The buoyancy conversion mechanism comprises a support rod (1001) and a floating bucket (1002), wherein the support rod (1001) is mounted on the inner wall of the rack (9), and the outer wall of the support rod (1001) is slidably connected to the inner wall of the fixed shell (1), and the floating bucket (1002) is fixedly sleeved on the outer wall of the support rod (1001), and the floating bucket (1002) is located at an end of the support rod (1001) away from the rack (9); The counterweight mechanism comprises a mounting frame (1101) and a counterweight block (1102); the mounting frame (1101) is integrally connected to a side of the rack (9) away from the gear (8); the counterweight block (1102) is mounted on the inner wall of the mounting frame (1101); a slot is provided on the outer wall of the counterweight block (1102); a block is provided on the inner wall of the mounting frame (1101); and the counterweight block (1102) is engaged with the counterweight block (1102) via the slot and the block. The power-on / off mechanism comprises an insulating frame (1801), a support block (1802), a spring sheet (1803), a reinforcing frame (1804) and a supporting column (1805); the insulating frame (1801) is fixedly connected to the inner wall of the power distribution chamber (4); the supporting block (1802) is integrally connected to the top of the insulating frame (1801); the spring sheet (1803) is fixedly connected to one side of the support block (1802); the reinforcing frame (1804) is fixedly sleeved on the outer wall of the spring sheet (1803); the supporting column (1805) is integrally connected to one side of the insulating frame (1801); the spring sheet (1803) is movably connected to the supporting column (1805); there are two spring sheets (1803), the two spring sheets (1803) are relatively distributed, and one side of the two spring sheets (1803) is slidably connected to the outer wall of the copper block (17); The precision adjustment mechanism comprises a limit frame (2001), a threaded rod (2002), a threaded barrel (2004), a push frame (2005) and a spring (2006); the limit frame (2001) is fixedly connected to the inner wall of the precision adjustment chamber (6); the threaded rod (2002) is rotatably connected to the inner wall of the top plate (2); the threaded barrel (2004) is installed on the outer wall of the threaded rod (2002); the inner wall of the threaded barrel (2004) is provided with a second internal thread; and the outer wall of the threaded rod (2002) is provided with a second external thread. , and the threaded cylinder (2004) is threadedly connected to the threaded rod (2002) through a second internal thread and a second external thread, the push frame (2005) is fixedly sleeved on the outer wall of the threaded cylinder (2004), and the outer wall of the push frame (2005) is slidably connected to the inner wall of the limit frame (2001), the spring (2006) is movably sleeved on the outer wall of the threaded rod (2002), and one end of the spring (2006) is movably connected to one side of the top plate (2), and the other end of the spring (2006) is movably connected to the upper surface of the push frame (2005); The length adjustment mechanism comprises a slide bar (2101), a mounting column (2102) and a second twist block (2103); the mounting column (2102) is rotatably connected to the inner wall of the top plate (2); the slide bar (2101) is integrally connected to one end of the mounting column (2102); the surface of the slide bar (2101) is slidably connected to the inner wall of the rectangular groove (1003); and the second twist block (2103) is fixedly mounted on one end of the mounting column (2102) away from the slide bar (2101).

2. The oil leakage monitoring device for an oil storage tank according to claim 1, characterized in that: The buzzer (19) is electrically connected to the on-off mechanism via a second wire (25), and a switch (27) is installed inside the third wire (26).

3. The oil leakage monitoring device for an oil storage tank according to claim 1, characterized in that: The floating barrel (1002) is provided with an air cavity (1004) therein, and the number of the air cavities (1004) is plural. The outer wall of the support rod (1001) is provided with a first external thread, and a rectangular groove (1003) is provided at one end of the support rod (1001) away from the floating barrel (1002).

4. The oil leakage monitoring device for an oil storage tank according to claim 1, characterized in that: Threaded holes (1103) are provided on both sides of the rack (9), and a first internal thread is provided inside the threaded hole (1103). The threaded hole (1103) is threadedly connected to the support rod (1001) through the first internal thread and the first external thread, and buckle grooves (1104) are provided on both sides of the counterweight block (1102).

5. The oil leakage monitoring device for an oil storage tank according to claim 1, characterized in that: The precision adjustment mechanism also includes a spring sheet (2003), a first torsion block (2007), a pressure block (2008), a guide hole (2009) and a guide column (2010); the spring sheet (2003) is fixedly connected to the inner bottom wall of the precision adjustment chamber (6); a slideway is provided between the precision adjustment chamber (6) and the transmission chamber (5); and the pressure block (2008) is slidably connected to the inner wall of the slideway; the first torsion block (2007) is fixedly installed on the top of the threaded rod (2002); the guide hole (2009) penetrates the outer wall of the limit frame (2001); the guide column (2010) is integrally connected to both sides of the pressure block (2008); and the outer wall of the guide column (2010 is slidably connected to the inner wall of the guide hole (2009).

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