A metal storage tank sealing performance detection device

Abstract

The present invention relates to the technical field of tank performance detection, specifically a metal storage tank sealing performance detection device, including a detection base, two roller frames installed on the detection base, and a support roller installed on each roller frame. A lifting mechanism for placing and removing the storage tank by supporting it is installed at the top of the detection base and between the two roller frames; above the lifting mechanism, a spraying mechanism for spraying foaming agent on the weld position of the tank body is arranged. The present invention can increase the stability of the storage tank during placement and removal by using a supporting method, and at the same time, the storage tank can be adjusted in the front and rear positions during support, increasing the convenience of its position adjustment; the present invention uses a mechanical downward spraying method for the tank body welds in cooperation with vibration impacts on the tank body welds, thereby increasing the permeability of the foaming agent and further increasing the accuracy of the storage tank sealing performance detection.

Description

Technical Field

[0001] The present invention relates to the technical field of tank performance detection, and specifically to a metal storage tank sealing performance detection device. Background Art

[0002] Metal storage tanks are generally cylindrical barrels formed by welding processed coiled metal sheets. Metal storage tanks are widely used in the petrochemical industry, energy industry, food industry, etc. for storing corresponding products. Therefore, the sealing performance of metal storage tanks is an important indicator to measure their quality. And because metal storage tanks are processed by welding, the weld positions of metal storage tanks need to be focused on for sealing detection.

[0003] Existing technical solutions have also been proposed for detecting the sealing performance of metal storage tanks. For example, the utility model patent with the publication number CN221945511U discloses an oil and gas storage and transportation container detection device. This technical solution pressurizes the container, sprays water on the upper part of the container through a rotating nozzle, and observes whether the container makes a leaking sound to determine the specific position of the leak. The above technical solution is for testing the sealing performance of vertical storage tanks, but for large horizontal storage tanks, it is impossible to focus on monitoring their weld positions. When testing large horizontal storage tanks, generally, the storage tank is lifted onto the support rollers by hoisting, and after pressurizing the storage tank, the support rollers drive the storage tank to rotate. An operator holds a spray bottle and sprays foaming agent on the weld positions of the storage tank, and judges the sealing performance of the metal storage tank by observing whether there is foam at the weld positions and the pointer change of the pressure gauge.

[0004] The above existing technologies have the following problems when detecting the sealing performance of storage tanks. When the storage tank is lifted onto the support rollers, due to the uncertain hoisting angle and hoisting position, the storage tank may collide violently with the support rollers, causing damage to the storage tank or the support rollers. At the same time, when the position of the storage tank needs to be adjusted, it needs to be lifted multiple times and corresponding position adjustments are required; in addition, when an operator sprays foaming agent on the storage tank, it is mostly sprayed upwards, resulting in waste of foaming agent, and the foaming agent cannot penetrate into the welds of the storage tank, thus affecting the accuracy of the storage tank sealing performance detection. Summary of the Invention

[0005] The present invention adopts the following technical solutions to solve the above technical problems. A metal storage tank sealing performance detection device includes a detection base, two roller frames installed on the detection base, and support rollers are installed on each roller frame. A lifting mechanism for placing and removing the storage tank and placing it on the detection base is installed at the top of the detection base and between the two roller frames.

[0006] The positions of the two roller frames relative to the lifting mechanism can be adjusted synchronously; the lifting mechanism includes a supporting base installed on the detection base, and a supporting plate installed on the supporting base through a lifting member. On the supporting plate, there are symmetrically slidable supporting platforms on the left and right for supporting the lower part of the storage tank. On the side of the supporting platform close to the corresponding roller frame, there is a T-shaped connecting plate installed, and on the side of the roller frame, there is a vertical guiding seat corresponding to the position of the T-shaped connecting plate one by one. On the vertical guiding seat, there is a vertically arranged T-shaped chute that slidably cooperates with the T-shaped structure of the T-shaped connecting plate.

[0007] The upper side of the supporting platform is an arc structure, and a receiving groove is opened on the supporting platform. A positioning roller is slidably connected in the receiving groove, and the positioning roller is used to lift the storage tank on the supporting platform to facilitate the front and back position adjustment of the storage tank.

[0008] Preferably, the opening direction of the receiving groove faces the center of the circle where the arc structure of the supporting platform is located. A pushing member is installed in the receiving groove, and the pushing member is used to drive the positioning roller to automatically extend when the height of the supporting platform is adjusted.

[0009] Preferably, the pushing member includes a push rod slidably installed at the lower part of the receiving groove. One end of the push rod corresponding to the vertical guiding seat slidably penetrates through the supporting platform. The other end of the push rod is provided with a pushing slope. At the bottom of the support frame of the positioning roller, there is a pushed trapezoidal block that cooperates with the pushing slope of the push rod. On the side of the vertical guiding seat and corresponding to the position of the push rod, there is a track protrusion. When the push rod contacts the track protrusion, it moves towards the receiving groove, and then drives the positioning roller to move out of the receiving groove through the pushed trapezoidal block, so that the positioning roller lifts the storage tank.

[0010] Preferably, the position of the push rod intersects with the position of the T-shaped connecting plate. The track protrusion is an isosceles trapezoid structure, and one end of the push rod corresponding to the vertical guiding seat is an arc structure.

[0011] Preferably, above the lifting mechanism, there is a spraying mechanism for spraying foaming agent on the weld position of the tank body. The spraying mechanism includes a spraying bracket installed on the upper part of the detection base. The spraying bracket is an L-shaped structure, and a spraying tank with a nozzle at the bottom is installed on the horizontal section of the spraying bracket.

[0012] Preferably, the middle part of the vertical section of the spraying bracket is a telescopic structure and is installed with a height adjusting member for adjusting its height. The bottom of the spraying bracket is installed on the detection base through an electric slider.

[0013] Preferably, both the front and back sides of the spraying tank are connected in a detachable manner with a vibration mechanism. The vibration mechanism is used to limit the distance between the nozzle and the storage tank, and at the same time, it can also vibrate the storage tank when the nozzle sprays the foaming agent to facilitate the penetration of the foaming agent into the weld.

[0014] Preferably, the vibration mechanism includes a vibration hanger installed on the side of the spray box by bolts, a vibration head is installed at one end of the bottom of the vibration hanger close to the spray head through an elastic force storage column, and a follow-up roller is installed at the other end of the bottom of the vibration hanger, and the outer side of the follow-up roller is coated with an anti-slip layer.

[0015] Preferably, a toggle baffle is installed on the side of the vibration head close to the rotating roller, and a lever is extended and connected to the outer side of the rotating shaft of the rotating roller. The rotating roller rotates synchronously with the rotation of the storage tank, and then the lever drives the toggle baffle to lift and allows the elastic force storage column to store force. As the lever separates from the toggle baffle, the elastic force storage column drives the vibration head to hammer the storage tank.

[0016] Preferably, a clearance groove for the lever to move out is provided in the middle of the toggle baffle, both left and right sides of the toggle baffle are elastic telescopic structures, and the upper side of the ends of the elastic telescopic structures of the toggle baffle that are away from each other is a slope structure.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention can adopt a supporting method to increase the stability of placing and taking out the storage tank, and at the same time, the storage tank can be adjusted forward and backward when supported, which increases the convenience of its position adjustment; the present invention adopts a mechanical downward spraying method combined with vibration of the tank body weld to increase the permeability of the foaming agent, thereby increasing the accuracy of the tank sealing performance detection.

[0018] 2. The lifting mechanism of the present invention can be synchronously adjusted in position with the roller frame, so that the lifting mechanism can stably support storage tanks of different diameters. At the same time, the lifting mechanism can support the storage tank before it is placed on the support rollers, so that the storage tank slowly descends with the lifting mechanism and rests on the support rollers, thereby preventing the storage tank from colliding with the support rollers when it is initially placed, causing damage to the present invention or the storage tank. In addition, the lifting mechanism can also lift the storage tank from the support rollers after the sealing performance test of the storage tank is completed, so as to facilitate the removal of the storage tank from the present invention.

[0019] 3. After the support platform of the present invention supports the storage tank, the support platform contacts the track protrusion during the downward movement, so that the push rod drives the calibration roller to extend and support the storage tank, which is convenient for manual front and rear position adjustment of the storage tank. Then, as the support platform moves downward, the push rod separates from the track protrusion and is re-mounted on the support platform, and then the storage tank is placed on the support roller. The present invention adopts the above structure to control the movement of the calibration roller without adding drive, so that the storage tank can be lifted up by the calibration roller at a specific position on the support roller, which is convenient for the front and rear position adjustment of the storage tank.

[0020] Fourth, the vibration mechanism of the present invention is used to limit the distance between the nozzle and the storage tank, and can also vibrate the storage tank when the nozzle sprays the foaming agent, so as to facilitate the foaming agent to penetrate into the weld.

[0021] 5. When the present invention sprays foaming agent on a storage tank with an interface on the surface, it is necessary to control the storage tank to rotate back and forth. The inclined surface on the elastic telescopic structure of the baffle of the present invention causes the elastic telescopic structure to contract when the lever presses it from top to bottom, and the baffle moves upward when the elastic telescopic structure is pushed from bottom to top. When the lever rotates to the position of the give way slot, the lever passes through the give way slot, and at this time the elastic force storage column drives the vibration head to hammer the storage tank, thereby being able to detect the above-mentioned type of storage tank, thereby increasing the applicability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention.

[0025] Figure 3 It is a top view of the present invention.

[0026] Figure 4 yes Figure 3 Cross-sectional view along the XX axis.

[0027] Figure 5 yes Figure 4 Enlarged view of point N in the middle.

[0028] Figure 6 It is a structural schematic diagram between the spraying mechanism and the vibration mechanism of the present invention.

[0029] Figure 7 yes Figure 6 YY-direction cross-section.

[0030] In the figure: 1. detection base; 2. roller frame; 3. support roller; 4. lifting mechanism; 41. supporting base; 42. supporting support plate; 43. supporting platform; 431. accommodating groove; 432. calibration roller; 433. push trapezoidal block; 44. T-type connecting plate; 45. vertical guide seat; 46. push rod; 47. track protrusion; 5. spraying mechanism; 51. spraying bracket; 52. spraying box; 53. spray head; 54. height adjustment member; 55. electric slider; 6. vibration mechanism; 61. vibration hanger; 62. elastic force storage column; 63. vibrating head; 64. rotating roller; 65. toggle baffle; 66. toggle rod. DETAILED DESCRIPTION

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Refer to Figure 1 and Figure 2 , a metal storage tank sealing performance detection device, including a detection base 1, two roller frames 2 installed on the detection base 1, a support roller 3 installed on each roller frame 2, and a lifting mechanism 4 installed at the top of the detection base 1 and between the two roller frames 2 for supporting the storage tank when it is placed and removed; the support roller 3 is driven by a motor, thereby driving the storage tank placed on the support roller 3 to rotate. A support roller is installed on the top of the roller frame 2, and the support roller abuts against the lower part of the support roller 3 to support the support roller 3 and prevent it from being deformed under the pressure of the storage tank for a long time.

[0033] Refer to Figure 2 and Figure 3 , the positions of the two roller frames 2 relative to the lifting mechanism 4 can be adjusted synchronously; the lifting mechanism 4 includes a supporting base 41 installed on the detection base 1, a supporting plate 42 installed on the supporting base 41 through a lifting member, and a supporting table 43 for supporting the lower part of the storage tank is slidably connected to the supporting plate 42 symmetrically left and right. A T-shaped connecting plate 44 is installed on the side of the supporting table 43 close to the corresponding roller frame 2, and a vertical guiding seat 45 corresponding to the position of the T-shaped connecting plate 44 is installed on the side of the roller frame 2. A T-shaped sliding groove is arranged on the vertical guiding seat 45 vertically and slidably matched with the T-shaped structure of the T-shaped connecting plate 44. The lifting mechanism 4 can be adjusted synchronously with the roller frame 2, so that the lifting mechanism 4 can stably support storage tanks with different diameters. At the same time, the lifting mechanism 4 can support the storage tank before it is placed on the support roller 3, so that the storage tank slowly descends with the lifting mechanism 4 and is placed on the support roller 3, thereby preventing the storage tank from colliding with the support roller 3 during the initial placement and causing damage to the present invention or the storage tank. In addition, the lifting mechanism 4 can also lift the storage tank from the support roller 3 after the sealing performance of the storage tank is detected, which is convenient for the storage tank to be removed from the present invention.

[0034] It should be noted that the lifting member is selected as a scissor jack structure. The scissor jack structure can stably drive the supporting plate 42 to move up and down, and at the same time, the scissor jack structure can have strong supporting performance, so as to increase the stability of the present invention when detecting the sealing performance of large storage tanks. In addition, the synchronous left and right position adjustment of the two roller frames 2 can be achieved by setting electric adjustment sliders at the bottom of the roller frames 2, or a manual adjustment structure can be used, so that the distance between the two roller frames 2 can be adjusted synchronously, thus being applicable to the sealing performance detection of storage tanks with different diameters.

[0035] Specifically, when it is necessary to detect the sealing performance of the storage tank, first synchronously adjust the left and right positions of the roller frame 2 according to the size of the storage tank. At this time, the supporting platform 43 drives it to move synchronously under the cooperation of the vertical guiding seat 45 and the T-shaped connecting plate 44, thereby increasing the stability of the supporting platform 43 for supporting the storage tank. Then, the lifting member drives the supporting plate 42 to move upward, controls the external crane to control the storage tank to move downward and rest on the supporting platform 43, and then controls the lifting member to drive the supporting plate 42 to move downward. The storage tank on the supporting platform 43 can rest on the supporting rollers 3 and be separated from the supporting platform 43; close the pipeline of the storage tank and pressurize the storage tank by injecting gas to keep the inside of the storage tank at a specified pressure, and observe whether there is air leakage by spraying foaming agent at the weld position of the storage tank; after the airtightness detection of the storage tank is completed, control the lifting member to drive the supporting plate 42 to move upward again, and use the external crane to move the storage tank out.

[0036] Since the storage tank is lifted by an external crane, the front and rear positions of the storage tank may be slightly deviated. Especially after the storage tank is placed on the supporting rollers 3, it is more inconvenient to adjust the front and rear positions of the storage tank. Therefore, the present invention adopts the following structure: Refer to Figure 4 and Figure 5 , the upper side of the supporting platform 43 is an arc structure. An accommodating groove 431 is formed on the supporting platform 43. A buffer pad is arranged on the supporting platform 43 and is arranged in a staggered manner with the accommodating groove 431. A positioning roller 432 is slidably connected in the accommodating groove 431. The positioning roller 432 is used to lift the storage tank on the supporting platform 43, facilitating the adjustment of the front and rear positions of the storage tank. The arc structure and the buffer pad on the supporting platform 43 can increase the stability of the storage tank when it is lifted. The positioning roller 432 can move upward under the action of an external force, so that the positioning roller 432 lifts the storage tank, thus facilitating manual adjustment of the front and rear positions of the storage tank.

[0037] In order to increase the convenience of the positioning roller 432 to eject, the present invention uses a pushing member to control the positioning roller 432 to extend out of the accommodating groove 431. There is a pushing member installed. Continue to refer to Figure 4 and Figure 5, when the pushing member is used to support the supporting table 43 for height adjustment, it drives the alignment roller 432 to automatically extend. The opening direction of the receiving groove 431 faces the center of the arc structure of the supporting table 43, so that when the alignment roller 432 moves upward, there will be no large relative movement with the storage tank. The pushing member can automatically drive the alignment roller 432 to extend and retract by means of the up and down movement of the lifting member.

[0038] In order to facilitate the adjustment of the front and rear positions of the storage tank when it is placed and taken out, the present invention adopts the method of driving the alignment roller 432 to extend when the storage tank is at a certain height above the support roller 3. Thus, during the process of placing and taking out the storage tank, the front and rear positions can be conveniently adjusted. Please continue to refer to Figure 4 and Figure 5 , the pushing member includes a push rod 46 slidably installed at the lower part of the receiving groove 431. One end of the push rod 46 corresponding to the vertical guide seat 45 slidably penetrates through the supporting table 43. The other end of the push rod 46 is provided with a pushing slope. At the bottom of the support frame of the alignment roller 432, there is a pushed trapezoidal block 433 that cooperates with the pushing slope of the push rod 46. A track protrusion 47 is installed on the side of the vertical guide seat 45 corresponding to the position of the push rod 46. When the push rod 46 contacts the track protrusion 47, it moves towards the receiving groove 431. Then, through the pushed trapezoidal block 433, it drives the alignment roller 432 to move out of the receiving groove 431, so that the alignment roller 432 lifts the storage tank; the position of the push rod 46 intersects with the position of the T-shaped connecting plate 44. The track protrusion 47 is an isosceles trapezoidal structure, and one end of the push rod 46 corresponding to the vertical guide seat 45 is an arc structure. The arc structure of the push rod 46 can stably cooperate with the track protrusion 47, and at the same time, under the action of the isosceles trapezoidal track protrusion 47, the push rod 46 can gradually push out the alignment roller 432.

[0039] Specifically, after the storage tank is placed on the supporting table 43, control the supporting table 43 to move downward. When the push rod 46 moves downward with the supporting table 43, it will contact the track protrusion 47. The isosceles trapezoidal track protrusion 47 can push the push rod 46 inward. The push rod 46 drives the alignment roller 432 to extend and support the storage tank through the cooperation of its pushing slope and the pushed trapezoidal block 433, which is convenient for manual adjustment of the front and rear positions of the storage tank. Then, continue to control the supporting table 43 to move downward, the push rod 46 separates from the track protrusion 47, and the storage tank is re-supported on the supporting table 43. As the supporting table 43 continues to move downward, the storage tank finally rests on the support roller 3. The steps for the storage tank to be removed are similar and will not be elaborated here.

[0040] In the prior art, when testing the sealing performance of a storage tank, a foaming agent (mostly soapy water) is manually sprayed on the joint of the storage tank after the internal part of the storage tank is pressurized, so that if there is a leak at the joint of the storage tank, foam will be generated, which is convenient for visually identifying product defects. The above operation requires the storage tank to be rotated by the support roller 3, and then the foaming agent is sprayed on the weld of the storage tank by a manual hand-held spraying pot. The present invention adopts an automated spraying mechanism 5 to perform the corresponding operation, see Figure 1 and Figure 6 A spraying mechanism 5 for spraying a foaming agent on the weld of the tank body is arranged above the lifting mechanism 4. The spraying mechanism 5 includes a spraying bracket 51 installed on the upper part of the detection base 1. The spraying bracket 51 is an L-shaped structure. A spraying box 52 with a nozzle 53 at the bottom is installed on the horizontal section of the spraying bracket 51. A pressure pump and a feeding port are provided on the spraying box 52. The pressure pump can control the foaming agent in the spraying box 52 to be sprayed out by the nozzle 53. The feeding port is used to add the foaming agent.

[0041] Since the support roller 3 is synchronously adjusted left and right, the vertical middle position of the tank is determined, but the size and weld position of the tank are slightly deviated, so the spray mechanism 5 needs to be adjusted in height and front and rear positions, see Figure 1 The middle part of the vertical section of the spray bracket 51 of the storage tank is a telescopic structure and is equipped with a height adjustment member 54 for adjusting its height. The bottom of the spray bracket 51 is installed on the detection base 1 through an electric slider 55. The height of the spray bracket 51 is adjusted by the height adjustment member 54, and the electric slider 55 can adjust the front and rear position of the spray bracket 51.

[0042] When manually spraying the foaming agent on the tank weld, the method of overhead spraying is mostly used due to the large size of the tank, which causes serious dripping of the foaming agent and also causes the foaming agent to be unable to penetrate into the weld, affecting the overall sealing performance detection effect. The front and rear sides of the spray box 52 are both detachably connected with a vibration mechanism 6, which is used to limit the distance between the nozzle 53 and the tank, and can also vibrate the tank when the nozzle 53 sprays the foaming agent, so as to facilitate the foaming agent to penetrate into the weld. The present invention sprays the foaming agent on the tank weld by the nozzle 53 facing downward in the form of a downward spray, and at the same time, the vibration mechanism 6 can increase the utilization rate and permeability of the foaming agent.

[0043] See also Figure 6 and Figure 7The vibration mechanism 6 includes a vibration hanger 61 installed on the side of the spray box 52 by bolts, and a vibration head 63 is installed at one end of the bottom of the vibration hanger 61 close to the spray head 53 through an elastic force storage column 62, and a rotating roller 64 is installed at the other end of the bottom of the vibration hanger 61, and the outer side of the rotating roller 64 is covered with an anti-slip layer; a toggle baffle 65 is installed on the side of the vibration head 63 close to the rotating roller 64, and a toggle rod 66 is extended and connected to the outer side of the rotating shaft of the rotating roller 64, and the rotating roller 64 rotates synchronously when the storage tank rotates, and then the toggle rod 66 drives the toggle baffle 65 to lift and makes the elastic force storage column 62 store force, and as the toggle rod 66 separates from the toggle baffle 65, the elastic force storage column 62 drives the vibration head 63 to hammer the storage tank. The anti-skid layer of the rotating roller 64 can be rotated synchronously with the rotation of the storage tank. The downward spraying of the foaming agent by the nozzle 53 and the hammering of the storage tank by the vibration head 63 can increase the penetration effect of the foaming agent.

[0044] Since some storage tanks have interfaces on their surfaces, the storage tanks cannot rotate in one direction. Therefore, the support roller 3 controls the storage tanks to rotate back and forth, and the follow-up roller 64 rotates back and forth accordingly. In order to enable the follow-up roller 64 to move the baffle plate 65 upward in both forward and reverse rotations, the present invention is designed as follows: Figure 6 and Figure 7 The left and right sides of the toggle baffle 65 are both elastic telescopic structures, and the upper side of the end of the elastic telescopic structure of the toggle baffle 65 that is away from each other is an inclined structure, and a makeshift groove for the toggle rod 66 to move out is provided in the middle of the toggle baffle 65; the inclined surface on the elastic telescopic structure of the toggle baffle 65 causes the elastic telescopic structure to shrink when the toggle rod 66 presses it from top to bottom, and the toggle baffle 65 moves upward when the elastic telescopic structure is pushed from bottom to top, and when the toggle rod 66 rotates to the position of the makeshift groove, the toggle rod 66 passes through the makeshift groove, and at this time the elastic force storage column 62 drives the vibration head 63 to hammer the storage tank.

[0045] It should be noted that for storage tanks with interfaces on some surfaces, manual cooperation is required to spray the foaming agent in places where the machine cannot spray.

[0046] 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A metal storage tank sealing performance testing device, comprising a testing base, two roller frames mounted on the testing base, each roller frame being mounted with a supporting roller, characterized in that: A lifting mechanism for placing and taking out the storage tank is installed on the top of the detection base and between the two roller frames; The positions of the two roller frames relative to the lifting mechanism can be adjusted synchronously; the lifting mechanism includes a supporting base installed on the detection base, a supporting support plate installed on the supporting base through a lifting member, and a supporting platform for supporting the lower part of the storage tank is symmetrically slidably connected to the supporting support plate, and a T-shaped connecting plate is installed on the side of the supporting platform close to the corresponding position of the roller frame, and a vertical guide seat corresponding to the position of the T-shaped connecting plate is installed on the side of the roller frame, and a T-shaped slide groove is provided on the vertical guide seat, which is vertically oriented and slidably matched with the T-shaped structure of the T-shaped connecting plate; The upper side of the support platform is an arc-shaped structure, and a receiving groove is provided on the support platform. A calibration roller is slidably connected in the receiving groove. After the storage tank is placed on the support platform, the lifting member drives the storage tank to move downward through the support platform, and controls the calibration roller to extend and support the storage tank, so that the storage tank can be adjusted in front and back positions. As the control support platform continues to move downward, the calibration roller shrinks and the storage tank is placed on the support roller and separated from the support platform, and then the sealing performance of the storage tank is tested; The opening direction of the receiving groove is directly opposite to the center of the circle where the arc-shaped structure of the supporting platform is located. The receiving groove is equipped with a push piece, which is used to drive the calibration roller to automatically extend when the supporting platform is adjusted in height; The pushing member includes a pushing rod slidably installed at the lower part of the accommodating groove, one end of the pushing rod corresponding to the vertical guide seat slides through the supporting platform, the other end of the pushing rod is provided with a pushing slope, the bottom of the support frame of the calibration roller is provided with a pushed trapezoidal block matching the pushing slope of the pushing rod, and a track protrusion is installed on the side of the vertical guide seat and corresponding to the position of the pushing rod. When the pushing rod contacts the track protrusion, it moves toward the accommodating groove, and then drives the calibration roller to move out of the accommodating groove through the pushed trapezoidal block, so that the calibration roller lifts the storage tank.

2. A metal storage tank sealing performance testing device according to claim 1, characterized in that: The position of the push rod is staggered with the position of the T-shaped connecting plate, the track protrusion is an isosceles trapezoidal structure, and one end of the push rod corresponding to the vertical guide seat is an arc structure.

3. A metal storage tank sealing performance testing device according to any one of claims 1-2, characterized in that: A spraying mechanism for spraying foaming agent on the tank body weld is arranged above the lifting mechanism. The spraying mechanism includes a spraying bracket installed on the upper part of the detection base. The spraying bracket is an L-shaped structure. A spray box with a nozzle at the bottom is installed on the horizontal section of the spraying bracket.

4. A metal storage tank sealing performance testing device according to claim 3, characterized in that: The middle part of the vertical section of the spraying bracket is a telescopic structure and is equipped with a height adjusting member for adjusting the height thereof. The bottom of the spraying bracket is installed on the detection base through an electric slider.

5. The metal storage tank sealing performance testing equipment according to claim 3 is characterized in that: The front and rear sides of the spray box are both detachably connected with a vibration mechanism, which is used to limit the distance between the nozzle and the storage tank, and can also vibrate the storage tank when the nozzle sprays the foaming agent, so as to facilitate the foaming agent to penetrate into the weld.

6. The metal storage tank sealing performance testing equipment according to claim 5 is characterized in that: The vibration mechanism includes a vibration hanger installed on the side of the spray box by bolts, a vibration head is installed at one end of the bottom of the vibration hanger close to the spray head through an elastic force storage column, and a rotating roller is installed at the other end of the bottom of the vibration hanger, and the outer side of the rotating roller is coated with an anti-slip layer.

7. The metal storage tank sealing performance testing equipment according to claim 6 is characterized in that: A toggle baffle is installed on the side of the vibration head close to the rotating roller, and a toggle rod is extended and connected to the outer side of the rotating shaft of the rotating roller. The rotating roller rotates synchronously when the storage tank rotates, and then the toggle rod drives the toggle baffle to lift and allows the elastic force storage column to store force. As the toggle rod separates from the toggle baffle, the elastic force storage column drives the vibration head to hammer the storage tank.

8. The metal storage tank sealing performance testing equipment according to claim 7 is characterized in that: A clearance groove for the lever to move out is provided in the middle of the toggle baffle, both left and right sides of the toggle baffle are elastic telescopic structures, and the upper side of the ends of the elastic telescopic structures of the toggle baffle that are away from each other is a slope structure.

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