A leak detection device for pressure vessels

Abstract

The application discloses a kind of leak detection devices for pressure tank, it is related to oil tank leak detection technical field, including monitoring host computer and respectively with the tank inside detection controller and tank outside detection controller of monitoring host computer wire connection, by setting tank inside detection controller and tank outside detection controller, and tank inside detection controller and tank outside detection controller wire connection on monitoring host computer, rely on tank inside detection controller connection and extend into the detection probe of vertical detection pipe, and tank outside detection controller connection around and laid in oil port and oil pipe on oil monitoring cable, to carry out simultaneous monitoring in tank body and outside tank body, and oil leakage information and oil leakage position are sent to terminal by sending module, effectively improve the oil leakage cooperativity of pressure oil tank.In addition, by setting front end clamp, middle clamp and rear end clamp, to lay oil monitoring cable in oil port and oil pipe bottom, easy to install, can carry out axial compression to oil monitoring cable, so that it can completely adhere to oil pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil tank leak detection, in particular to a leak-proof detection device for pressure tank. BACKGROUND

[0002] Oil tanks are commonly used in industrial sites such as gas stations, oil depots, airports, power stations, production workshops, etc. Since the fuel in the oil tank is flammable, regular inspection is required to avoid safety hazards. In order to prevent significant economic losses, it is necessary to monitor the oil tank for leaks to monitor whether the oil tank and oil pipe are leaking. The existing technology for leak detection of oil tank is mainly achieved by arranging a probe in the detection pipe of the double-layer oil tank. The monitoring of the oil pipe of the oil tank is achieved by arranging a leak monitoring cable. The two detection methods work independently and cannot be coordinated. In addition, the current leak monitoring cable arrangement mainly uses a strap to fix the oil pipe. Since the leak monitoring cable is mainly arranged at the bottom of the oil pipe, in order to make the leak monitoring cable adhere to the outer surface of the oil pipe, the tightening interval of the strap needs to be as short as possible, which makes the arrangement of the leak monitoring cable more complicated. Moreover, the strap can only press the leak monitoring cable at one point, causing most of the area of the leak monitoring cable to be exposed without protection, which is easily affected by external factors, affecting the detection efficiency and accuracy. SUMMARY

[0003] The present application aims to solve the problems of the above-mentioned tank and oil pipe detection that cannot be coordinated, and the arrangement of the leak monitoring cable is more complicated, and the strap can only press the leak monitoring cable at one point, causing most of the area of the leak monitoring cable to be exposed without protection, which is easily affected by external factors, affecting the detection efficiency and accuracy.

[0004] The present application provides a leak-proof detection device for pressure tank, comprising a monitoring host, an in-tank detection controller and an out-tank detection controller electrically connected to the monitoring host, the in-tank detection controller being inserted into the vertical detection pipe of the tank body through a detection probe; the out-tank detection controller being arranged around the oil port of the tank body through a leak monitoring cable, and being arranged at the bottom of the oil pipe along the axial direction of the oil pipe; the monitoring host detects the inside and outside of the tank body through the in-tank detection controller and the out-tank detection controller, and sends the leakage information and the leakage position to the terminal through the sending module in the monitoring host; further comprising a clamping assembly for winding the leak monitoring cable around the oil port and arranging it at the bottom of the oil pipe, the clamping assembly being detachably sleeved on the oil port and the oil pipe.

[0005] Preferably, the clamping assembly comprises a front end clamp, a middle clamp and a rear end clamp, the front end clamp is sleeved on the flange joint of the oil pipe, and the middle clamp and the rear end clamp are sleeved on the oil pipe. The front end clamp comprises a front end lower clamp, a front end upper clamp one and a front end upper clamp two, both ends of the front end lower clamp, one end of the front end upper clamp one and one end of the front end upper clamp two are provided with horizontal bending parts, outer threads are arranged on the horizontal bending parts, the other end of the front end upper clamp one and the other end of the front end upper clamp two are provided with vertical bending parts, and the lower part of the front end lower clamp is communicated with a first guide part. The middle clamp comprises a middle upper clamp and a middle lower clamp, both ends of the middle clamp are provided with horizontal bending parts, and the lower end of the middle lower clamp is provided with a second guide part. The rear end clamp comprises a rear end upper clamp and a rear end lower clamp, both ends of the rear end upper clamp and the rear end lower clamp are provided with horizontal bending parts, and the lower end of the rear end lower clamp is provided with a third guide part in protrusion. The horizontal bending parts are closed to form a threaded pipe structure, and the front end clamp, the middle clamp and the rear end clamp are all provided with a threaded sleeve for connecting with the threaded pipe.

[0006] Preferably, the lower part of the middle lower clamp is in an arc piece structure, a sliding block is arranged at the bottom of the second guide part, and the sliding block is slidably arranged on the arc piece; and a pre-tightening screw is arranged on the sliding block.

[0007] Preferably, the clamping assembly further comprises a round joint clamp for the flange joint, the round joint clamp comprises a round joint upper clamp, a round joint lower clamp one and a round joint lower clamp two, both ends of the round joint upper clamp and one end of the round joint lower clamp one and the round joint lower clamp two are provided with horizontal bending parts, the other end of the round joint lower clamp one is provided with a guide inlet, and the other end of the round joint lower clamp two is provided with a guide outlet.

[0008] Preferably, the middle lower clamp comprises a middle lower clamp one and a middle lower clamp two, and the second guide part is slidably arranged on the middle lower clamp one and the middle lower clamp two through an arc sleeve.

[0009] Preferably, the clamping assembly further comprises a limiting pressing strip, a plurality of through holes are arranged in the limiting pressing strip at both ends in the axial direction, screws are arranged in protrusion at the bottom of the first guide part, the second guide part and the third guide part, the screws pass through the through holes to be connected with nuts, and the limiting pressing strip is fixed between the first guide part, the second guide part and the third guide part.

[0010] Compared with the prior art, the clamping assembly has the following beneficial effects:

[0011] 1. The application sets the in-tank detection controller and the out-tank detection controller, and connects the in-tank detection controller and the out-tank detection controller with the monitoring host through the electric wire, relies on the detection probe connected into the vertical detection tube by the in-tank detection controller, and the oil leakage monitoring cable arranged on the oil port and the oil pipe by the out-tank detection controller, to simultaneously monitor the inside and outside of the tank body, and sends the oil leakage information and the oil leakage position to the terminal through the sending module, effectively improving the oil leakage cooperation of the pressure tank.

[0012] 2. The application sets the front end clamp, the middle clamp and the rear end clamp to arrange the oil leakage monitoring cable on the oil port and the oil pipe bottom, which is convenient and simple to install, can axially compress the oil leakage monitoring cable, and can completely adhere to the oil pipe; and sets the limiting pressing strip to protect the oil leakage monitoring cable, effectively improving the use safety, reducing the influence of external factors while ensuring the detection accuracy. DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only preferred embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Figure 1 It is a schematic diagram of the leak-proof detection device for the pressure tank of the application;

[0015] Figure 2 It is a schematic diagram of the clamping assembly of the application;

[0016] Figure 3 It is a partial enlarged schematic diagram of the application A;

[0017] Figure 4 It is a front view of the front end clamp of the application;

[0018] Figure 5 It is a schematic diagram of the winding and connection of one oil leakage monitoring cable and two oil leakage monitoring cables of the application;

[0019] Figure 6 It is a schematic diagram of the middle clamp of the application;

[0020] Figure 7 It is a schematic diagram of another embodiment of the middle clamp of the application;

[0021] Figure 8 It is a partial enlarged schematic diagram of the application B;

[0022] Figure 9 It is a schematic diagram of another embodiment of the middle clamp of the application;

[0023] Figure 10 Fig. 1 is a schematic view of the present application;

[0024] Figure 11 Fig. 2 is a schematic view of the present application;

[0025] Figure 12 Fig. 3 is a schematic view of the present application;

[0026] Figure 13 Fig. 4 is a schematic view of the present application.

[0027] In the figure, 1 is a monitoring host; 2 is an in-tank detection controller; 21 is a detection probe; 3 is an out-of-tank detection controller; 31 is an oil leakage monitoring cable; 4 is a clamping assembly.

[0028] 41 is a front-end clamp; 411 is a front-end lower clamp; 412 is a front-end upper clamp I; 413 is a front-end upper clamp II; 414 is a vertical bending part; 415 is a first guide part.

[0029] 42 is a middle clamp; 421 is a middle upper clamp; 422 is a middle lower clamp; 423 is a second guide part; 424 is an arc-shaped piece; 425 is a sliding block; 4221 is a middle lower clamp I; 4222 is a middle lower clamp II; 4223 is an arc-shaped sleeve.

[0030] 43 is a rear-end clamp; 431 is a rear-end upper clamp; 432 is a rear-end lower clamp; 433 is a third guide part.

[0031] 44 is a threaded sleeve.

[0032] 45 is a horizontal bending part.

[0033] 46 is a winding clamp; 461 is a winding upper clamp; 462 is a winding lower clamp I; 463 is a winding lower clamp II; 464 is a guide inlet; 465 is a guide outlet.

[0034] 47 is a limiting press strip; 471 is a through hole; 472 is a screw. DETAILED DESCRIPTION

[0035] In order to make the structure of the present application more understandable, and to make the function features and advantages achieved by the present application more understandable, the preferred embodiments of the present application are described in detail below, with reference to the accompanying drawings:

[0036] Embodiment:

[0037] As Figure 1As shown in the application, a leakage detection device for pressure tank is provided, which comprises a monitoring host 1, a tank-in detection controller 2 and a tank-out detection controller 3 connected to the monitoring host 1 by wires, wherein the tank-in detection controller 2 is inserted into the vertical detection tube of the tank body through a detection probe 21; the tank-out detection controller 3 is arranged around the oil port of the tank body through an oil leakage monitoring cable 31, and is arranged on the bottom of the oil pipe along the axial direction, i.e. the oil leakage monitoring cable 31 is arranged on the bottom of the oil pipe; the monitoring host 1 detects the inside and outside of the tank body through the tank-in detection controller 2 and the tank-out detection controller 3, and sends the leakage information and the leakage position to the terminal through a sending module in the monitoring host 1. The monitoring host 1 sends the leakage information and the leakage position to the terminal through the sending module to remind the staff that the tank body or the oil pipe leaks; further, an alarm is arranged on the monitoring host 1, which rings when leakage occurs.

[0038] As shown in the application, Figure 2 The leakage detection device for pressure tank further comprises a clamping assembly 4 for winding the oil leakage monitoring cable 31 around the oil port and arranging it on the bottom of the oil pipe, which can be detachably sleeved on the oil port and the oil pipe to realize real-time monitoring of the oil port and the oil pipe of the tank body.

[0039] As another embodiment of the application, as shown in the application, Figure 2 The clamping assembly 4 of the application comprises a front end clamp 41, a middle clamp 42 and a rear end clamp 43, the front end clamp 41 is sleeved on the flange joint of the oil pipe, and the middle clamp 42 and the rear end clamp 43 are sleeved on the oil pipe; by arranging the front end clamp 41, the middle clamp 42 and the rear end clamp 43, the front end clamp 41 is used to install the oil leakage monitoring cable 31 on the oil port, the middle clamp 42 is used to install the oil leakage monitoring cable 31 on the bottom of the oil pipe, and the rear end clamp 43 is used to wind the oil leakage monitoring cable 31 around the end of the oil pipe, so as to fix the oil leakage monitoring cable 31 on the oil port and the bottom of the oil pipe.

[0040] As shown in the application, Figures 2 to 4As shown, the front end clamp 41 includes a front end lower clamp 411, a front end upper clamp one 412 and a front end upper clamp two 413, both ends of the front end lower clamp 411, one end of the front end upper clamp one 412 and one end of the front end upper clamp two 413 are provided with horizontal bending parts 45, the horizontal bending parts 45 are provided with external threads, the other end of the front end upper clamp one 412 and the other end of the front end upper clamp two 413 are provided with vertical bending parts 414; the lower part of the front end lower clamp 411 is communicated with a first guide part 415; by setting the front end lower clamp 411, the front end upper clamp one 412 and the front end upper clamp two 413, one or two oil leakage monitoring cables 31 are conveniently spliced at the oil port; when one oil leakage monitoring cable 31 is spliced, the oil leakage monitoring cable 31 enters the front end upper clamp one 412 or the front end upper clamp two 413 from a vertical bending part 414 thereof, then extends out of a first guide part 415 of the front end lower clamp 411 and is connected with the middle clamp 42, finally, after being spliced once around the rear end clamp 43, the oil leakage monitoring cable 31 enters the front end lower clamp 411 from another first guide part 415 of the middle clamp 42, then enters the front end upper clamp one 412 or the front end upper clamp two 413, and finally, the oil leakage monitoring cable 31 is discharged from another vertical bending part 414; when two oil leakage monitoring cables 31 are spliced, the two oil leakage monitoring cables 31 are respectively input from the vertical bending parts 414, and are simultaneously output from the first guide parts 415 of the front end lower clamp 411, then are spliced and discharged from the rear end clamp 43 after passing through the middle clamp 42, at this time, the rear end clamp 43 is provided with a vertical bending part 414 for discharging the cable; the rear end clamp 43 can be used for splicing and monitoring the connection of the oil pipe, i.e. the welding part.

[0041] As shown in Figure 2 , Figures 6 to 9 As shown, the middle clamp 42 includes a middle upper clamp 421 and a middle lower clamp 422, both ends of the middle clamp 42 including the middle upper clamp 421 and the middle lower clamp 422 are provided with horizontal bending parts 45; the lower end of the middle lower clamp 422 is provided with a second guide part 423, so as to limit and compress one or two oil leakage monitoring cables 31 by setting the second guide part 423, so that the oil leakage monitoring cables 31 are tightly attached to both sides of the bottom of the oil pipe.

[0042] As shown in Figure 2As shown, the rear end clamp 43 includes a rear end upper clamp 431 and a rear end lower clamp 432, both ends of the rear end upper clamp 431 and the rear end lower clamp 432 are provided with horizontal bending portions 45; the lower end of the rear end lower clamp 432 is provided with a third guide portion 433, so as to guide and compress one or two oil leakage monitoring cables 31 by setting the third guide portion 433; when one oil leakage monitoring cable 31 is compressed, the oil leakage monitoring cable 31 enters from one third guide portion 433, and then exits from another third guide portion 433 after winding around one turn; when two oil leakage monitoring cables 31 are compressed, the oil leakage monitoring cables 31 enter from two third guide portions 433 at the same time, and then exit from the vertical bending portion 414 provided at the upper end of the rear end upper clamp 431.

[0043] As shown in Figure 3 , the horizontal bending portions 45 are closed to form a threaded pipe structure; the front end clamp 41, the middle clamp 42 and the rear end clamp 43 are all provided with a threaded sleeve 44 for connecting with the threaded pipe, so as to realize that the front end clamp 41, the middle clamp 42 and the rear end clamp 43 can be detachably arranged on the oil port and the oil pipe by the threaded connection between the screw pipe and the threaded pipe.

[0044] As another embodiment of the present application, as shown in Figure 7 and Figure 8 , the lower part of the middle lower clamp 422 of the present application is in the form of an arc-shaped piece 424, and the bottom of the second guide portion 423 is provided with a sliding block 425, which is slidingly arranged on the arc-shaped piece 424; a pre-tightening screw 472 is arranged on the sliding block 425, so that the second guide portion 423 can adjust the distance between the two second guide portions 423 by sliding on the arc-shaped piece 424, thereby adapting the arrangement of the oil leakage monitoring cable 31 of the oil pipe with different diameters.

[0045] As another embodiment of the present application, as shown in Figure 10 , the clamping assembly 4 of the present application further includes a wrapping clamp 46 for a flange joint, the wrapping clamp 46 includes a wrapping upper clamp 461, a wrapping lower clamp one 462 and a wrapping lower clamp two 463, both ends of the wrapping upper clamp 461 and one end of the wrapping lower clamp one 462 and the wrapping lower clamp two 463 are provided with horizontal bending portions 45; the other end of the wrapping lower clamp one 462 is provided with a guide inlet 464, and the other end of the wrapping lower clamp two 463 is provided with a guide outlet 465; the wrapping clamp 46 can realize the wrapping arrangement of the flange joint; one or two oil leakage monitoring cables 31 can be arranged by using the wrapping clamp 46.

[0046] As another embodiment of the present application, as shown in Figure 9As shown, unlike the above-mentioned middle lower clamp 422 with an arc-shaped piece 424 structure, the middle lower clamp 422 of the present application includes a middle lower clamp 1 4221 and a middle lower clamp 2 4222, and the second guide portion 423 is slidably provided on the middle lower clamp 1 4221 and the middle lower clamp 2 4222 respectively through the arc-shaped sleeve 4223; further, the arc-shaped sleeve 4223 is provided with flanges on both sides, and the arc-shaped sleeve 4223 is sleeved on the middle lower clamp 1 4221 and the middle lower clamp 2 4222, and the two sides of the middle lower clamp 1 4221 and the middle lower clamp 2 4222 are limited in the flanges, so that the second guide portion 423 can slide on the middle lower clamp 1 4221 and the middle lower clamp 2 4222 through the arc-shaped sleeve 4223 to adjust the distance between the two second guide portions 423. Furthermore, the first guide portion 415 in the front clamp 41 of the present application can also be slidably disposed on the front lower clamp 411 through the arc sleeve 4223. Similarly, the third guide portion 433 in the rear clamp 43 of the present application can also be slidably disposed on the rear lower clamp 432 through the arc sleeve 4223.

[0047] As another embodiment of the present application, Figure 11 As shown, the clamping assembly 4 of the present application also includes a limiting pressure strip 47, with multiple through holes 471 opened axially at both ends of the limiting pressure strip 47, and screws 472 protruding from the bottom of the first guide portion 415, the second guide portion 423, and the third guide portion 433. The screws 472 pass through the through holes 471 to connect with the nuts, and the limiting pressure strip 47 is fixed between the first guide portion 415, the second guide portion 423, and the third guide portion 433 to limit and tighten the oil leakage monitoring cable 31 located between the front clamp 41, the middle clamp 42, and the rear clamp 43 and located at the bottom of the oil pipe, so that it can fit on both sides of the bottom of the oil pipe. Furthermore, by providing the limiting pressure strip 47, the oil leakage monitoring cable 31 can be protected from external impact or animal gnawing, effectively improving the safety of the oil leakage monitoring cable 31. Furthermore, the through holes 471 on the limiting pressure strip 47 of the present application may be multiple circular holes, or a strip-shaped hole may be used at each end to replace the multiple circular holes, so as to adjust the compression length of the limiting pressure strip 47.

[0048] The working principle of the present application: when in use, the in-tank detection probe 2 is inserted into the vertical detection tube, and the in-tank detection controller 2 is fixed on the tank body through the flange, then the in-tank detection controller 2 is connected to the monitoring host 1, and the layout of the in-tank oil leakage monitoring is completed; then the oil leakage monitoring cable 31 is wound through the front end clamp 41 and wound on the oil port pipe, and the middle clamp 42 and the rear end clamp 43 are relied on to extend the oil leakage monitoring cable 31 to the welding position of the tank body and the oil port pipe, and the oil leakage monitoring cable 31 is connected to the out-tank detection controller 3; then the oil leakage monitoring cable 31 is arranged on the oil pipe in sequence by relying on the front end clamp 41, the middle clamp 42 and the rear end clamp 43 along the oil pipe flange joint, and then connected to the out-tank detection controller 3, finally the out-tank detection controller 3 is connected to the monitoring host 1, so as to complete the layout of the anti-leakage detection device; the laid anti-leakage detection device relies on the sending module in the monitoring host 1 to send the oil leakage information and the oil leakage position to the terminal to remind the staff.

[0049] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any skilled person in the art can make many possible changes and modifications to the technical solution of the present application by using the above technical content without departing from the scope of the technical solution of the present application, or modify equivalent embodiments with equivalent changes. Therefore, any modification, equivalent change and modification of the above embodiments made by the technical personnel according to the present application without departing from the technical solution of the present application, all belong to the protection scope of the present application.

Claims

1. A leak detection device for a pressure tank, characterized in that , comprising a monitoring host (1) and an in-tank detection controller (2) and an out-tank detection controller (3) respectively connected to the monitoring host (1) by electric wires, wherein the in-tank detection controller (2) extends into the vertical detection tube of the tank body through a detection probe (21); the out-tank detection controller (3) is wound around the oil port of the tank body through an oil leakage monitoring cable (31) and is attached to the bottom of the oil pipe along the axial direction of the oil pipe; the monitoring host (1) performs anti-leakage detection on the inside and outside of the tank body through the in-tank detection controller (2) and the out-tank detection controller (3), and transmits leakage information and leakage position to a terminal through a sending module in the monitoring host (1); and further comprising a clamping assembly (4) for winding the oil leakage monitoring cable (31) around the oil port and attached to the bottom of the oil pipe, wherein the clamping assembly (4) is detachably sleeved on the oil port and the oil pipe; The clamping assembly (4) comprises a front clamp (41), a middle clamp (42) and a rear clamp (43), wherein the front clamp (41) is sleeved on the flange joint of the oil pipe, and the middle clamp (42) and the rear clamp (43) are sleeved on the oil pipe; The front end clamp (41) includes a front end lower clamp (411), a front end upper clamp 1 (412) and a front end upper clamp 2 (413), and both ends of the front end lower clamp (411), one end of the front end upper clamp 1 (412) and one end of the front end upper clamp 2 (413) are provided with horizontal bending portions (45), and the horizontal bending portions (45) are provided with external threads. The other end of the front end upper clamp 1 (412) and the other end of the front end upper clamp 2 (413) are provided with vertical bending portions (414); the lower part of the front end lower clamp (411) is connected to the first guide portion (415).

2. The pressure tank leakage detection device according to claim 1, characterized in that: The middle clamp (42) comprises a middle upper clamp (421) and a middle lower clamp (422), and both ends of the middle clamp (42) are provided with the horizontal bending portion (45); the lower end of the middle lower clamp (422) is provided with a second guide portion (423).

3. The pressure tank leak detection device according to claim 2, characterized in that: The rear end clamp (43) comprises a rear end upper clamp (431) and a rear end lower clamp (432), both ends of the rear end upper clamp (431) and the rear end lower clamp (432) being provided with the horizontal bending portion (45); the lower end of the rear end lower clamp (432) being protruding and provided with a third guide portion (433).

4. The pressure tank leak detection device according to claim 3, characterized in that: The horizontal bending portions (45) are closed to form a threaded tube structure; the front clamp (41), the middle clamp (42) and the rear clamp (43) are all provided with a screw sleeve (44) for connecting to the threaded tube.

5. The pressure tank leakage detection device according to claim 2, characterized in that: The lower portion of the middle lower clamp (422) is an arc-shaped piece (424) structure, and a slider (425) is provided at the bottom of the second guide portion (423). The slider (425) is slidably arranged on the arc-shaped piece (424); a pre-tightening screw (472) is provided on the slider (425).

6. The pressure tank leakage detection device according to claim 4, characterized in that: The invention also includes a wrap-around clamp (46) for a flange joint, wherein the wrap-around clamp (46) includes a wrap-around upper clamp (461), a wrap-around lower clamp 1 (462) and a wrap-around lower clamp 2 (463), and the horizontal bending portion (45) is provided at both ends of the wrap-around upper clamp (461) and one end of the wrap-around lower clamp 1 (462) and the wrap-around lower clamp 2 (463); the other end of the wrap-around lower clamp 1 (462) is provided with a guide inlet (464), and the other end of the wrap-around lower clamp 2 (463) is provided with a guide outlet (465).

7. The pressure tank leakage detection device according to claim 2, characterized in that: The middle lower clamp (422) comprises a middle lower clamp 1 (4221) and a middle lower clamp 2 (4222), and the second guide portion (423) is slidably arranged on the middle lower clamp 1 (4221) and the middle lower clamp 2 (4222) respectively through an arc sleeve (4223).

8. The pressure tank leakage detection device according to claim 3, characterized in that: The invention also includes a limiting pressure strip (47), wherein a plurality of through holes (471) are provided at both ends of the limiting pressure strip (47) along the axial direction, and screws (472) are protruding from the bottom of the first guide portion (415), the second guide portion (423) and the third guide portion (433), and the screws (472) pass through the through holes (471) to be connected to the nuts, and the limiting pressure strip (47) is fixed between the first guide portion (415), the second guide portion (423) and the third guide portion (433).

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