Pipeline leakage stopping and cut-off device

Abstract

The utility model relates to the technical field of pipeline maintenance, and discloses a pipeline leakage stopping and intercepting device which comprises a large-section pipe, a small-section pipe is fixedly installed at the bottom of the large-section pipe, a valve is arranged on the outer wall of the small-section pipe, an installation frame is arranged outside the large-section pipe, a lead screw is arranged in the middle of the installation frame, and a valve is arranged on the valve. The bottom end of the lead screw extends out of the mounting frame, the lead screw is fixedly connected with the mounting frame through a nut, and a second straw hat pad is fixedly mounted at the top end of the lead screw. Through the synergistic effect of the elliptical silica gel ball slidably sleeved on the outer wall of the screw rod, the tightening sleeve, the straw hat pad I and the straw hat pad II, when the tightening sleeve rotates upwards along the screw rod, pressure is generated, and the pressure is transmitted through the straw hat pad I and the straw hat pad II to gradually compress the elliptical silica gel ball between the straw hat pad I and the straw hat pad II; due to the fact that the silica gel ball has excellent elasticity and corrosion resistance, the silica gel ball can be tightly attached to the inner wall of the small section pipe to form an effective sealing layer, and the sealing layer can effectively prevent leakage of media.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline maintenance, and more specifically to a pipeline leakage-stopping and flow-intercepting device. Background Art

[0002] The oil and gas transportation company is facing huge challenges. Its huge process pipeline network, especially the T2 tank area outer pipeline corridor near the sea, has been exposed to the high temperature and high humidity tropical monsoon climate environment for a long time. This extreme condition greatly accelerates the corrosion process of the pipeline. The humid air not only contains a lot of water, but also carries salt. Together with the high temperature, it poses a serious erosion threat to the metal pipeline. The salty seawater continues to erode the pipeline through natural factors such as sea breeze and tides, aggravating the severity of corrosion. In this context, the four crude oil loading and unloading ship pipelines in the T2 tank area outer pipeline corridor have oil leakage due to severe corrosion, which not only threatens the safe operation of oil loading and unloading operations, It may also cause pollution to the surrounding environment. Therefore, emergency repair and replacement of these corroded and damaged pipelines has become the company's current top priority. However, maintenance work is not easy. Since these high and low drainage pipelines cannot be effectively isolated, the traditional maintenance process - including isolation, emptying, cleaning, replacement and other steps - has become extremely cumbersome and time-consuming. Each step of the operation needs to be carefully planned and executed to ensure that no greater safety hazards or environmental pollution are caused during the operation. At the same time, these links will also produce a large amount of oily wastewater. The treatment of this wastewater not only increases additional costs, but may also have an adverse impact on the ecological environment. Therefore, it needs to be improved and optimized. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a pipeline leakage-stopping and flow-intercepting device, which has the advantages of energy saving, environmental protection and simple operation.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline leak-stopping and flow-intercepting device, comprising a large-section pipe, a small-section pipe is fixedly installed at the bottom of the large-section pipe, a valve is arranged on the outer wall of the small-section pipe, a mounting frame is arranged outside the large-section pipe, a screw rod is arranged in the middle of the mounting frame, the bottom end of the screw rod extends to the outside of the mounting frame, the screw rod and the mounting frame are fixedly connected by a nut, a straw hat pad 2 is fixedly installed on the top of the screw rod, an elliptical silicone ball is provided on the sliding sleeve on the outer wall of the screw rod, a tightening sleeve is threadedly installed on the outer wall of the screw rod, and a straw hat pad 1 is fixedly installed on the top of the tightening sleeve.

[0005] As a preferred technical solution of the utility model, two second cross plates are fixedly installed at the top of the mounting frame, two rectangular strips are respectively fixedly installed at the tops of the two second cross plates, a first cross plate is fixedly installed at the top of each corresponding pair of rectangular strips, two elastic ropes are arranged on the outer wall of the large joint pipe, and the two ends of the two elastic ropes are respectively fixedly connected with the two first cross plates.

[0006] As a preferred technical solution of the utility model, the four rectangular strips are designed in an inclined shape in pairs and are symmetrically distributed left and right.

[0007] As a preferred technical solution of the utility model, two arc-shaped blocks are fixedly installed on the outer wall of the tightening sleeve, and the two arc-shaped blocks are symmetrically distributed.

[0008] As a preferred technical solution of the utility model, a silica gel plug is fixedly sleeved on the outer wall of the tightening sleeve, and the silica gel plug is designed as a regular trapezoid.

[0009] As a preferred technical solution of the utility model, a second straw hat pad is fixedly installed at the top of the screw rod, and the elliptical silica gel ball is located between the second straw hat pad and the first straw hat pad.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. Through the elliptical silica gel ball slidably sleeved on the outer wall of the screw rod and its synergistic effect with the tightening sleeve, the first straw hat pad and the second straw hat pad, when the tightening sleeve rotates upward along the screw rod, pressure is generated. Through the transmission of the first straw hat pad and the second straw hat pad, the elliptical silica gel ball located between the two is gradually compressed. Since the silica gel ball has excellent elasticity and corrosion resistance, it can closely fit the inner wall of the small joint pipe to form an effective sealing layer. The sealing layer can not only effectively prevent the leakage of the medium, but also quickly isolate a specific part of the pipeline when needed, providing convenience for subsequent maintenance work, eliminating the cumbersome steps of isolation, evacuation, cleaning, replacement, etc. in the traditional maintenance process. In the traditional maintenance process, in order to repair the leakage point or perform other maintenance work, it is usually necessary to isolate the pipeline system first, evacuate the medium therein, and then perform operations such as cleaning and replacement. However, this device only needs to rotate the tightening sleeve to achieve rapid sealing and isolation, greatly simplifying the maintenance process and improving work efficiency.

[0012] 2. The utility model constructs a multi-level and stable support framework by arranging two second cross plates 8 on the top of the mounting frame 4 and fixing and installing a rectangular bar 5 and a first cross plate 6 on this basis. This structure not only enhances the support force of the device for the large-section pipe 1, but also improves the anti-deformation ability and stability of the device under complex working conditions, ensuring that it is not easy to loosen or damage during emergency interception or long-term use. Two elastic ropes 7 are ingeniously connected between the two first cross plates 6 and the large-section pipe 1. This design enables the device to be flexibly adjusted according to large-section pipes of different diameters, achieving tight fitting and effective fixation. The elastic characteristics of the elastic ropes ensure that under different pressures and temperature changes, they can still maintain stable restraint on the large-section pipe, effectively preventing leakage risks caused by pipeline vibration or deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a schematic structural diagram of the mounting frame of the utility model;

[0015] Figure 3 is a schematic front sectional structural diagram of the utility model;

[0016] Figure 4 is the utility model Figure 3 the enlarged structural diagram of A in;

[0017] Figure 5 is a schematic partial explosion structural diagram of the utility model.

[0018] In the figure: 1, large-section pipe; 2, small-section pipe; 3, valve; 4, mounting frame; 5, rectangular bar; 6, first cross plate; 7, elastic rope; 8, second cross plate; 9, screw rod; 10, tightening sleeve; 11, first straw hat pad; 12, second straw hat pad; 13, elliptical silica gel ball; 14, silica gel plug; 15, arc-shaped block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Such as Figures 1 to 5As shown in the figure, the utility model provides a pipeline leak stoppage and flow interception device, which includes a large-section pipe 1. A small-section pipe 2 is fixedly installed at the bottom of the large-section pipe 1. A valve 3 is arranged on the outer wall of the small-section pipe 2. An installation frame 4 is arranged outside the large-section pipe 1. A lead screw 9 is arranged in the middle of the installation frame 4. The bottom end of the lead screw 9 extends outside the installation frame 4. The lead screw 9 is fixedly connected with the installation frame 4 through a nut. A second straw hat gasket 12 is fixedly installed at the top end of the lead screw 9. An elliptical silica gel ball 13 is slidably sleeved on the outer wall of the lead screw 9. A tightening sleeve 10 is threadedly installed on the outer wall of the lead screw 9. A first straw hat gasket 11 is fixedly installed at the top of the tightening sleeve 10.

[0021] Through the elliptical silica gel ball 13 slidably sleeved on the outer wall of the lead screw 9 and its synergistic effect with the tightening sleeve 10, the first straw hat gasket 11 and the second straw hat gasket 12, when the tightening sleeve 10 rotates upward along the lead screw 9, pressure is generated. Through the transmission of the first straw hat gasket 11 and the second straw hat gasket 12, the elliptical silica gel ball 13 located between the two is gradually compressed. Due to the excellent elasticity and corrosion resistance of the silica gel ball, it can closely fit the inner wall of the small-section pipe 2 to form an effective sealing layer. The sealing layer can not only effectively prevent the leakage of the medium, but also quickly isolate a specific part of the pipeline when needed, providing convenience for subsequent maintenance work and eliminating the cumbersome steps such as isolation, evacuation, cleaning, and replacement in the traditional maintenance process. Compared with the traditional maintenance process, in order to repair the leakage point or perform other maintenance work, it is usually necessary to isolate the pipeline system first, evacuate the medium therein, and then perform operations such as cleaning and replacement. However, this device only needs to rotate the tightening sleeve 10 to achieve rapid sealing and isolation, greatly simplifying the maintenance process and improving work efficiency.

[0022] When there is a break point on the outer wall of the small section pipe 2 and the break point is above the valve 3, the operator first fixes the entire device at an appropriate position on the large section pipe 1 through the mounting bracket 4. Fix one end of each of the two elastic ropes 7 on the two first cross plates 6 respectively. After adjusting the length as needed, fix the other end on the outer wall of the large section pipe 1 to ensure that the elastic ropes 7 can closely fit the large section pipe 1 and can be flexibly adjusted according to the diameter of the large section pipe to achieve a stable clamping. Then close the valve 3 and slowly insert the elliptical silica gel ball 13 from the bottom of the small section pipe 2. In its initial state, the elliptical silica gel ball 13 may not fully fit the inner wall of the small section pipe 2, and at this time the sealing effect has not reached the best. Hold the arc-shaped block 15 on the outer wall of the tightening sleeve 10 and rotate the tightening sleeve 10 upward along the lead screw 9. As the tightening sleeve 10 rises, it will generate pressure and transmit it to the elliptical silica gel ball 13 through the first straw hat gasket 11. At the same time, the second straw hat gasket 12 serves as a support to prevent the elliptical silica gel ball 13 from moving upward, so that the elliptical silica gel ball 13 gradually deforms under the extrusion of the upper and lower straw hat gaskets and closely fits the inner wall of the small section pipe 2. The silica gel plug 14 with a trapezoidal design may also form a closer fit with the inner wall of the small section pipe 2 during this process, enhancing the sealing effect. After rotating the tightening sleeve 10 to an appropriate position, check the fitting condition of the elliptical silica gel ball 13 and the inner wall of the small section pipe 2 to ensure no leakage. After confirming that the sealing effect is good, subsequent maintenance work can be carried out, such as replacing damaged parts, repairing leakage points, etc. After the maintenance is completed, rotate the tightening sleeve 10 in the reverse direction to release the compression on the elliptical silica gel ball 13 and make it return to its original state so that the device can be reused. Reopen the valve 3 to restore the normal operation of the pipeline.

[0023] Among them, two second cross plates 8 are fixedly installed at the top of the mounting bracket 4, two rectangular bars 5 are respectively fixedly installed at the tops of the two second cross plates 8, the first cross plates 6 are fixedly installed at the tops of the corresponding two rectangular bars 5, and two elastic ropes 7 are arranged on the outer wall of the large section pipe 1, and the two ends of the two elastic ropes 7 are respectively fixedly connected to the two first cross plates 6.

[0024] By setting two second cross plates 8 at the top of the mounting bracket 4 and fixedly installing rectangular bars 5 and first cross plates 6 on this basis, a multi-level and stable support framework is constructed. This structure not only enhances the support force of the device on the large section pipe 1, but also improves the anti-deformation ability and stability of the device under complex working conditions, ensuring that it is not easy to loosen or damage during emergency shut-off or long-term use. The two elastic ropes 7 are cleverly connected between the two first cross plates 6 and the large section pipe 1. This design enables the device to be flexibly adjusted according to large section pipes with different diameters to achieve close fitting and effective fixation. The elastic characteristics of the elastic ropes ensure that under different pressures and temperature changes, they can still maintain a stable restraint on the large section pipe, effectively preventing leakage risks caused by pipeline vibration or deformation.

[0025] Among them, the four rectangular bars 5 are designed in pairs in an inclined manner and are symmetrically distributed left and right.

[0026] The inclined and symmetrically distributed rectangular bars 5 provide a more balanced force-bearing structure for the device, which helps to disperse the pressure of the large-section pipe 1 on the mounting bracket 4, reduce the concentration of single-point force, and thus enhance the mechanical stability and durability of the entire device.

[0027] Among them, two arc-shaped blocks 15 are fixedly installed on the outer wall of the tightening sleeve 10, and the two arc-shaped blocks 15 are symmetrically distributed.

[0028] By designing the symmetrically distributed arc-shaped blocks 15, operators can easily hold and rotate them, making the rotation of the tightening sleeve 10 easier and faster, improving work efficiency. Since the two arc-shaped blocks 15 are symmetrically distributed, they can maintain balance during rotation, reduce vibration caused by imbalance, and prevent seal failure or device damage caused by unstable rotation.

[0029] Among them, a silica gel plug 14 is fixedly sleeved on the outer wall of the tightening sleeve 10, and the silica gel plug 14 is designed as a regular trapezoid.

[0030] When the silica gel plug 14 designed as a regular trapezoid is subjected to the movement of the tightening sleeve 10, its trapezoidal inclined surface can more effectively fit the inner wall of the small-section pipe 2, forming a tighter sealing interface. The stability and durability of the seal are enhanced through the self-locking effect of the trapezoid, effectively preventing the medium from leaking through the gap between the device and the small-section pipe 2.

[0031] Among them, a second straw hat gasket 12 is fixedly installed at the top of the lead screw 9, and the elliptical silica gel ball 13 is located between the second straw hat gasket 12 and the first straw hat gasket 11.

[0032] Through the dual-structure design of the first straw hat gasket 11 and the second straw hat gasket 12, combined with the elliptical silica gel ball 13 in the middle, when the lower first straw hat gasket 11 moves upward, it cooperates with the second straw hat gasket 12, thereby squeezing the elliptical silica gel ball 13 to achieve compression and recycling in the pipeline.

[0033] The working principle and usage process of the present utility model:

[0034] When a breakage point appears on the outer wall of the small section pipe 2 and the breakage point is above the valve 3, the operator first fixes the entire device at an appropriate position on the large section pipe 1 through the mounting bracket 4. One end of each of the two elastic ropes 7 is fixed on the two first cross plates 6 respectively, and the other end is fixed on the outer wall of the large section pipe 1 after adjusting the length as needed, ensuring that the elastic ropes 7 can closely fit the large section pipe 1 and can be flexibly adjusted according to the diameter of the large section pipe to achieve a stable clamping. Then close the valve 3, slowly insert the elliptical silica gel ball 13 from the bottom of the small section pipe 2. In its initial state, the elliptical silica gel ball 13 may not fully fit the inner wall of the small section pipe 2, and at this time the sealing effect has not reached the best. Hold the arc-shaped block 15 on the outer wall of the tightening sleeve 10 and rotate the tightening sleeve 10 upward along the lead screw 9. As the tightening sleeve 10 rises, it will generate pressure and transmit it to the elliptical silica gel ball 13 through the first straw hat gasket 11. At the same time, the second straw hat gasket 12 serves as a support to prevent the elliptical silica gel ball 13 from moving upward, so that the elliptical silica gel ball 13 gradually deforms under the extrusion of the upper and lower straw hat gaskets and closely fits the inner wall of the small section pipe 2. The silica gel plug 14 with a trapezoidal design may also form a closer fit with the inner wall of the small section pipe 2 during this process, enhancing the sealing effect. After rotating the tightening sleeve 10 to an appropriate position, check the fitting condition of the elliptical silica gel ball 13 and the inner wall of the small section pipe 2 to ensure no leakage. After confirming that the sealing effect is good, subsequent maintenance work can be carried out, such as replacing damaged components, repairing leakage points, etc. After the maintenance is completed, rotate the tightening sleeve 10 in the reverse direction to release the compression on the elliptical silica gel ball 13 and make it return to its original state so that the device can be reused. Reopen the valve 3 to restore the normal operation of the pipeline.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline leakage-stopping and flow-intercepting device, comprising a large-jointed pipe (1), characterized in that: A small section pipe (2) is fixedly installed at the bottom of the large section pipe (1), a valve (3) is arranged on the outer wall of the small section pipe (2), a mounting frame (4) is arranged outside the large section pipe (1), a screw rod (9) is arranged in the middle of the mounting frame (4), the bottom end of the screw rod (9) extends to the outside of the mounting frame (4), the screw rod (9) and the mounting frame (4) are fixedly connected by a nut, a straw hat pad 2 (12) is fixedly installed at the top of the screw rod (9), an elliptical silicone ball (13) is slidingly sleeved on the outer wall of the screw rod (9), a tightening sleeve (10) is threadedly installed on the outer wall of the screw rod (9), and a straw hat pad 1 (11) is fixedly installed on the top of the tightening sleeve (10).

2. The pipeline leakage-stopping and flow-intercepting device according to claim 1 is characterized in that: Two horizontal plates (8) are fixedly installed on the top of the mounting frame (4), and two rectangular bars (5) are fixedly installed on the top of the horizontal plates (8), respectively. The tops of the two corresponding rectangular bars (5) are fixedly installed with horizontal plates (6). Two elastic ropes (7) are arranged on the outer wall of the large section pipe (1), and the two ends of the two elastic ropes (7) are fixedly connected to the two horizontal plates (6) respectively.

3. The pipeline leakage-stopping and flow-intercepting device according to claim 2 is characterized in that: The four rectangular strips (5) are arranged in groups of two, are tilted, and are symmetrically distributed on the left and right.

4. The pipeline leakage-stopping and flow-intercepting device according to claim 1 is characterized in that: Two arc-shaped blocks (15) are fixedly mounted on the outer wall of the tightening sleeve (10), and the two arc-shaped blocks (15) are designed to be symmetrically distributed.

5. The pipeline leakage-stopping and flow-intercepting device according to claim 1 is characterized in that: A silicone plug (14) is provided on the outer wall of the tightening sleeve (10) and the silicone plug (14) is of a regular trapezoidal design.

6. The pipeline leakage-stopping and flow-intercepting device according to claim 2 is characterized in that: A second straw hat pad (12) is fixedly mounted on the top of the screw rod (9), and the elliptical silicone ball (13) is located between the second straw hat pad (12) and the first straw hat pad (11).

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