A leakage monitoring device for tank bottom plate and oil storage tank

Abstract

The application provides a leakage monitoring device for tank bottom plate and an oil storage tank. The leakage monitoring device comprises a monitoring pipe body, a transmission component and a monitoring alarm device connected in sequence, the monitoring pipe body comprises a water-oil monitoring unit, the water-oil monitoring unit comprises a water measuring assembly and an oil measuring assembly; the transmission component is arranged in the water measuring assembly and the oil measuring assembly, and sends an alarm signal to the monitoring alarm device when the water measuring assembly and / or the oil measuring assembly has leakage oil and water. The oil storage tank comprises a tank side wall, a sandwich bottom plate and the above-mentioned leakage monitoring device, the monitoring pipe body of the leakage monitoring device is arranged between the sandwich bottom plate and close to the tank side wall; the monitoring alarm device of the leakage monitoring device is arranged outside the tank side wall. The application has the advantages of simultaneously monitoring oil and water of the tank bottom plate, convenient operation, long service life and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tank bottom leakage monitoring, in particular to a leakage monitoring device for tank bottom and oil storage tank. BACKGROUND

[0002] The service life of a storage tank is usually more than thirty years, but the actual service life of the tank bottom is greatly different from the designed service life due to corrosion of the tank bottom. To solve the above problem, the existing method is to use a double-layer bottom structure to determine whether leakage occurs by monitoring the gap between the double-layer bottom. The existing double-layer bottom usually uses a method of vacuumizing the gap to monitor leakage. Since the gap cannot be kept pressurized for a long time, it needs to be vacuumized periodically for secondary maintenance, which is a large workload. At the same time, the leakage monitoring usually uses a method of installing an electronic sensor in the gap of the double-layer bottom. The electronic sensor usually uses semiconductor components, and its service life is only about ten years, while the service life of the double-layer bottom is usually more than twenty years. When the electronic sensor is damaged, it is extremely inconvenient to replace it, and the cost is high. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a leakage monitoring device for tank bottom and oil storage tank, which can monitor oil and water of the tank bottom at the same time, is convenient to operate, and has a long service life.

[0004] To solve the above technical problem, the technical solution provided by the present application is as follows:

[0005] A leakage monitoring device for tank bottom, comprising a monitoring pipe body, a transmission component and a monitoring alarm connected in sequence, wherein the monitoring pipe body comprises a water-oil monitoring unit, the water-oil monitoring unit comprises a water measuring assembly and an oil measuring assembly; the transmission component is arranged in the water measuring assembly and the oil measuring assembly, and sends an alarm signal to the monitoring alarm when the water measuring assembly and / or the oil measuring assembly has leaked oil and water.

[0006] As a further improvement of the above technical solution:

[0007] The water-oil monitoring unit further comprises a transmission insulating sleeve, and the transmission component is arranged in the water measuring assembly and the oil measuring assembly through the transmission insulating sleeve.

[0008] The oil measuring assembly comprises an oil measuring shell with an oil-expanding cavity, and a conductive liquid is arranged in the oil-expanding cavity; the outer wall of the transmission insulating sleeve is provided with a cutting piece for piercing the oil-expanding cavity, and a safety gap is left between the cutting piece and the oil-expanding cavity; the monitoring pipe body further comprises an outer sleeve for ensuring the inward expansion of the oil-expanding cavity, the outer sleeve is wrapped outside the water-oil monitoring unit, and the outer sleeve is provided with a leakage oil and water inlet hole.

[0009] The oil detecting assembly further comprises an expansion block, which is arranged in the oil-expanding cavity and fixed to the outer wall of the oil detecting shell.

[0010] The length of the expansion block is greater than the length of the cutting piece.

[0011] The transmission component comprises a live wire, an oil detecting sensor wire and a water detecting sensor wire. The transmission insulation sleeve is provided with a conductive liquid passing hole at the position of the oil detecting assembly, a water passing hole at the position of the water detecting assembly, a first wire passing hole for the live wire, a second wire passing hole for the oil detecting sensor wire and a third wire passing hole for the water detecting sensor wire. The conductive liquid passing hole, the first wire passing hole and the second wire passing hole are communicated.

[0012] The water detecting assembly comprises a water detecting shell sleeved outside the transmission insulation sleeve. The water detecting shell is provided with a water detecting through hole, which is communicated with the water passing hole.

[0013] The water detecting through hole is at least two, which are arranged along the axial direction of the water detecting shell. The number of the water passing holes is the same as that of the water detecting through holes and is communicated with the water detecting through holes one by one.

[0014] The water and oil monitoring unit is at least two groups, which are arranged in front of and behind each other.

[0015] The water and oil monitoring unit is at least two groups, which are arranged in front of and behind each other.

[0016] Compared with the prior art, the advantages of the present application are as follows:

[0017] The present application adopts a monitoring pipe body to realize the leakage monitoring of the tank bottom plate, and adopts a transmission component and a monitoring alarm to realize the transmission and alarm of the tank bottom plate leakage signal, thereby avoiding the problems of large maintenance workload of the vacuum maintenance method and short service life of the electronic sensor, and the present application is convenient to operate and has long service life. Meanwhile, the water and oil monitoring unit of the monitoring pipe body comprises a water measuring assembly and an oil measuring assembly, the transmission component is arranged in the water measuring assembly and the oil measuring assembly, and the monitoring alarm is sent an alarm signal when the water measuring assembly and / or the oil measuring assembly has oil and water leakage, that is, the present application can realize the leakage monitoring of the oil and water of the tank bottom plate, and can effectively judge the leakage position of the tank bottom plate, that is, if the upper bottom plate leaks, the water and the oil can be monitored at the same time, and if the lower bottom plate leaks, only the water can be monitored. The oil storage tank of the present application also has the above advantages, and the monitoring pipe body is arranged in a rope type, has small volume, and can realize the leakage monitoring of the small interlayer of the tank bottom plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be described in more detail below based on the embodiments and with reference to the drawings. In the drawings:

[0019] Figure 1 is the structure of the leakage monitoring device for the tank bottom plate of the present application.

[0020] Figure 2 is the structure of the water and oil monitoring unit of the present application.

[0021] Figure 3 is the structure of the transmission insulating sleeve of the present application.

[0022] Figure 4 is the front view of the transmission insulating sleeve of the present application.

[0023] Figure 5 is the sectional view of the oil measuring shell of the present application.

[0024] Figure 6 is the structure of the water measuring shell of the present application.

[0025] Figure 7 is the structure of the transmission component of the present application.

[0026] Figure 8 is the structure of the outer sleeve of the present application.

[0027] Figure 9 is the structure of the oil storage tank of the present application.

[0028] Figure 10 is the position relationship of the leakage monitoring device in the interlayer bottom plate of the present application.

[0029] The various reference signs in the drawings represent:

[0030] 1, monitoring tube body; 11, water measuring assembly; 111, water measuring shell; 112, water measuring through hole; 12, oil measuring assembly; 121, oil measuring shell; 122, oil swelling cavity; 123, swelling block; 13, transmission insulation sleeve; 131, cutting piece; 132, conductive liquid passing hole; 133, water passing hole; 134, first wire passing hole; 135, second wire passing hole; 136, third wire passing hole; 14, safety gap; 15, outer sleeve; 151, oil and water leakage inlet hole; 2, transmission component; 21, live wire; 22, oil measuring sensor wire; 23, water measuring sensor wire; 3, monitoring alarm; 4, sealing end cover; 5, tank body side wall; 6, interlayer bottom plate; 61, flow guide groove; 62, lower layer bottom plate; 63, upper layer bottom plate. DETAILED DESCRIPTION

[0031] The present application will be further described in conjunction with the description of the drawings and specific embodiments, but the protection scope of the present application is not limited thereby.

[0032] As Figure 1 and Figure 2 An embodiment of the present application for a tank bottom plate leakage monitoring device is shown, which can be applied to the bottom plate interlayer leakage monitoring of oil depot, refinery vertical storage tank, etc. In this embodiment, the tank bottom plate leakage monitoring device comprises a monitoring tube body 1, a transmission component 2 and a monitoring alarm 3. Among them, the monitoring tube body 1, the transmission component 2 and the monitoring alarm 3 are connected in sequence; the monitoring tube body 1 comprises a water and oil monitoring unit, the water and oil monitoring unit comprises a water measuring assembly 11 and an oil measuring assembly 12; the transmission component 2 is provided in the water measuring assembly 11 and the oil measuring assembly 12, and the transmission component 2 sends an alarm signal to the monitoring alarm 3 when there is leakage of oil and water in the water measuring assembly 11 and / or the oil measuring assembly 12.

[0033] The present application adopts the monitoring tube body 1 to realize the leakage monitoring of the tank bottom plate, and adopts the transmission component 2 and the monitoring alarm 3 to realize the transmission and alarm of the tank bottom plate leakage signal, which avoids the problems of large maintenance workload by using vacuum maintenance method and short service life by using electronic sensor, and has the advantages of convenient operation and long service life. At the same time, the water and oil monitoring unit of the monitoring tube body 1 comprises the water measuring assembly 11 and the oil measuring assembly 12, the transmission component 2 is provided in the water measuring assembly 11 and the oil measuring assembly 12, and the transmission component 2 sends an alarm signal to the monitoring alarm 3 when there is leakage of oil and water in the water measuring assembly 11 and / or the oil measuring assembly 12, that is, the present application can simultaneously realize the leakage monitoring of oil and water of the tank bottom plate, and can effectively judge the leakage position of the tank bottom plate, that is, if it is the upper bottom plate leakage, water and oil can be monitored at the same time, and if it is the lower bottom plate leakage, only water can be monitored.

[0034] As Figures 2 to 4 shown, the water and oil monitoring unit further comprises a transmission insulation sleeve 13, and the transmission component 2 is provided in the water measuring assembly 11 and the oil measuring assembly 12 through the transmission insulation sleeve 13.

[0035] Further, as shown in Figure 7 The transmission component 2 includes a live wire 21, an oil sensing sensor wire 22 and a water sensing sensor wire 23; the transmission insulation sleeve 13 is provided with a conductive liquid passing hole 132, a water passing hole 133, a first wire passing hole 134, a second wire passing hole 135 and a third wire passing hole 136. The conductive liquid passing hole 132 is located at the position of the oil sensing assembly 12, the water passing hole 133 is located at the position of the water sensing assembly 11, the first wire passing hole 134 is for the live wire 21 to pass through, the second wire passing hole 135 is for the oil sensing sensor wire 22 to pass through, the third wire passing hole 136 is for the water sensing sensor wire 23 to pass through, the conductive liquid passing hole 132, the first wire passing hole 134 and the second wire passing hole 135 are communicated, and the water passing hole 133, the first wire passing hole 134 and the third wire passing hole 136 are communicated. This can effectively transmit the oil and water leakage signal to the transmission component 2 when there is oil and water leakage at the positions of the water sensing assembly 11 and the oil sensing assembly 12, so as to send an alarm signal to the monitoring alarm 3, and the transmission form of the present application is compact in structure and small in space occupation.

[0036] As shown in Figure 2 and Figure 5 The oil sensing assembly 12 includes an oil sensing shell 121 with an oil swelling cavity 122, and the oil swelling cavity 122 is provided with conductive liquid. The outer side wall of the transmission insulation sleeve 13 is provided with a cutting piece 131, and a safety gap 14 is left between the cutting piece 131 and the oil swelling cavity 122. As shown in Figure 8 The monitoring pipe body 1 further includes a sleeve pipe 15 wrapped outside the water and oil monitoring unit, so that the oil swelling cavity 122 can only swell inward when it meets oil; the sleeve pipe 15 is provided with an oil and water leakage liquid inlet hole 151 arranged in an array, which can effectively make the oil and water leakage enter the positions of the water sensing assembly 11 and the oil sensing assembly 12, and ensure the smooth progress of the oil and water leakage monitoring.

[0037] When oil leaks, the leaked oil enters the oil and water leakage liquid inlet hole 151 and contacts the oil sensing shell 121, the oil sensing shell 121 absorbs the oil and swells inward, the cutting piece 131 pierces the oil swelling cavity 122 when the oil swelling cavity 122 swells inward, the conductive liquid flows out and passes through the conductive liquid passing hole 132, the first wire passing hole 134 and the second wire passing hole 135, at this time, the live wire 21 and the oil sensing sensor wire 22 are connected and conductive, forming a conductive loop and transmitting to the monitoring alarm 3, so as to complete the monitoring of oil leakage.

[0038] Further, the oil sensing assembly 12 further includes an expansion block 123 arranged in the oil swelling cavity 122, and the expansion block 123 is fixed to the outer wall of the oil sensing shell 121. This ensures the effect of the oil sensing shell 121 swelling inward when oil leaks, so that the cutting piece 131 can effectively cut the oil sensing shell 121, and ensures the accuracy of the oil leakage monitoring.

[0039] Further, the setting length of the expansion block 123 is greater than that of the cutting sheet 131, the cutting sheet 131 is arranged opposite to the expansion block 123, and the cutting sheet 131 is located in the middle of the expansion block 123. This further improves the effect of the oil leakage monitoring shell 121 expanding inward, ensuring the accuracy of oil leakage monitoring.

[0040] In the embodiment, the oil leakage monitoring shell 121 and the expansion block 123 are composed of ethylene, ethylene propylene rubber and crosslinking agent. The oil leakage monitoring shell 121 and the expansion block 123 will expand to 200% in volume when encountering oil, and have good expansion effect and long service life. In the embodiment, the wall thickness of the oil leakage monitoring shell 121 is 1.5 mm, so as to facilitate the cutting sheet 131 to cut through. In other embodiments, the wall thickness of the oil leakage monitoring shell 121 can be 1-2 mm, as long as it can ensure that the cutting sheet 131 effectively cuts through the oil leakage monitoring shell 121.

[0041] As shown in Figure 6 , the water leakage monitoring assembly 11 includes a water leakage monitoring shell 111, which is sleeved outside the transmission insulation sleeve 13. The water leakage monitoring shell 111 is provided with a water leakage monitoring through hole 112, and the two ends of the water leakage monitoring through hole 112 are respectively communicated with the water passing hole 133 on the transmission insulation sleeve 13 and the leaked oil and water inlet hole 151 on the outer sleeve 15. When water leaks, the leaked water passes through the leaked oil and water inlet hole 151, the water leakage monitoring through hole 112 and the water passing hole 133 in sequence. At this time, the leaked water in the water passing hole 133 connects and conducts the live wire 21 located in the first wire passing hole 134 and the water leakage monitoring sensor wire 23 located in the third wire passing hole 136, forms a conductive loop, and is transmitted to the monitoring alarm 3, thereby completing the monitoring of water leakage. In the embodiment, the water leakage monitoring shell 111 is made of polyethylene material and has long service life.

[0042] In the embodiment, the water leakage monitoring through hole 112 is two, and the water leakage monitoring through hole 112 is arranged along the axial direction of the water leakage monitoring shell 111. The number of the water passing hole 133 is the same as that of the water leakage monitoring through hole 112, and the water passing hole 133 and the water leakage monitoring through hole 112 are communicated one by one to ensure the monitoring effect of water leakage. In other embodiments, the number of the water leakage monitoring through hole 112 can be selected according to actual conditions, such as three, four, etc.

[0043] As shown in Figure 1 , the water and oil monitoring unit of the embodiment is seven groups, and the seven groups of water and oil monitoring units are arranged in front and back abutment. The outer sleeve 15 is wrapped outside each group of water and oil monitoring units. In other embodiments, the number of water and oil monitoring units can be adjusted according to the size of the tank bottom plate. As shown in Figure 2 , the end of the monitoring pipe body 1 away from the transmission component 2 is provided with a sealing end cover 4 to achieve the purpose of effective insulation.

[0044] AsFigure 9 and Figure 10 As shown, the oil storage tank of this embodiment includes a tank side wall 5, a sandwich bottom plate 6, and the leakage monitoring device described in the above embodiment. The monitoring tube 1 of the leakage monitoring device is located between the sandwich bottom plates 6, and the monitoring tube 1 is arranged close to the tank side wall 5; the monitoring alarm 3 of the leakage monitoring device is located outside the tank side wall 5. The oil storage tank of the present invention also has the advantages of the above-mentioned leakage monitoring device, and the rope-type setting of the monitoring tube 1 is small in size, which can realize leakage monitoring between the tiny sandwich layers of the tank bottom plate.

[0045] like Figure 10 As shown, the monitoring tube 1 is an arc-shaped tube that fits against the side wall 5 of the tank. A guide channel 61 is provided on the lower bottom plate 62 of the sandwich bottom plate 6. The guide channel 61 has a slope in the direction of guiding the side wall 5 of the tank. When oil and water leak, the leaked oil and water flow in the guide channel 61 to the leak monitoring device, thereby realizing the effective monitoring of the leaked oil and water.

[0046] In this embodiment, the specific operation process of the oil storage tank is as follows: 1) Construction of the lower bottom plate 62 of the sandwich bottom plate 6: On the basis of the original bottom plate, the pits of the bottom plate are repaired with a primer. The repair layer material can be epoxy resin, vinyl resin or unsaturated polyester resin. Then the primer is applied along the bottom plate with a coating thickness of 0.4-0.6mm; 2) Processing the guide groove 61 on the lower bottom plate 62 of the sandwich bottom plate 6; 3) Installation of the leakage monitoring device: Install the leakage monitoring device along the edge of the tank side wall 5 and the sandwich bottom plate 6, and drill holes in the tank side wall 5 to lead out the transmission component 2 to connect the monitoring alarm 3; 4) Installation and edge sealing of the upper bottom plate 63 of the sandwich bottom plate 6.

[0047] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A leak monitoring device for a tank floor, characterized by The leakage monitoring device comprises a monitoring tube body, a transmission component and a monitoring alarm device connected in sequence, the monitoring tube body comprises a water-oil monitoring unit, the water-oil monitoring unit comprises a water measuring assembly and an oil measuring assembly; the transmission component is arranged in the water measuring assembly and the oil measuring assembly, and sends an alarm signal to the monitoring alarm device when the water measuring assembly and / or the oil measuring assembly has leaked oil and water; the water-oil monitoring unit further comprises a transmission insulation sleeve, the transmission component is arranged in the water measuring assembly and the oil measuring assembly through the transmission insulation sleeve, the oil measuring assembly comprises an oil measuring shell provided with an oil-expanding cavity, and a conductive liquid is arranged in the oil-expanding cavity; a cutting piece for piercing the oil-expanding cavity is arranged on the outer wall of the transmission insulation sleeve, and a safety gap is arranged between the cutting piece and the oil-expanding cavity; the monitoring tube body further comprises an outer sleeve for ensuring that the oil-expanding cavity expands inward, the outer sleeve is arranged outside the water-oil monitoring unit, and the outer sleeve is provided with a leakage oil and water inlet hole. When oil leaks, the oil measuring shell expands inward to absorb oil, the cutting piece pierces the oil-expanding cavity when the oil-expanding cavity expands inward, the conductive liquid flows out to make the charged wire and the oil measuring sensor connected and conductive, form a conductive loop, and transmit to the monitoring alarm device.

2. The leak monitoring device for a tank bottom plate according to claim 1, characterized by, The oil measuring assembly further comprises an expansion block arranged in the oil-expanding cavity and fixed to the outer wall of the oil measuring shell.

3. The leak monitoring device for a tank bottom plate according to claim 2, characterized by, The length of the expansion block is greater than the length of the cutting piece, the cutting piece is arranged opposite to the expansion block, and the cutting piece is arranged in the middle of the expansion block.

4. The leak monitoring apparatus for a tank bottom plate according to any one of claims 1 to 3, characterized by The transmission component comprises a charged wire, an oil measuring sensor wire and a water measuring sensor wire; the transmission insulation sleeve is provided with a conductive liquid passing hole arranged at the position of the oil measuring assembly, a water passing hole arranged at the position of the water measuring assembly, a first wire passing hole for the charged wire, a second wire passing hole for the oil measuring sensor wire and a third wire passing hole for the water measuring sensor wire, the conductive liquid passing hole, the first wire passing hole and the second wire passing hole are communicated, and the water passing hole, the first wire passing hole and the third wire passing hole are communicated.

5. The leak monitoring device for a tank bottom as claimed in claim 4, wherein The water measuring assembly comprises a water measuring shell arranged outside the transmission insulation sleeve, and the water measuring shell is provided with a water measuring through hole communicated with the water passing hole.

6. The leak monitoring device for a tank bottom as claimed in claim 5, wherein The water measuring through hole is at least two, and the water measuring through hole is arranged along the axial direction of the water measuring shell; the number of the water passing hole is the same as the number of the water measuring through hole, and the water passing hole is communicated with the water measuring through hole one by one.

7. The leak monitoring apparatus for a tank bottom plate according to any one of claims 1 to 3, characterized by The water-oil monitoring unit is at least two groups, and the water-oil monitoring units are arranged in abutment.

8. An oil storage tank characterized by, The leakage monitoring device comprises a tank body side wall, a sandwich bottom plate and a leakage monitoring device according to any one of claims 1 to 7, the monitoring tube body of the leakage monitoring device is arranged between the sandwich bottom plate and close to the tank body side wall; the monitoring alarm device of the leakage monitoring device is arranged outside the tank body side wall.

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