CN105674947A - Large-sized oil storage tank deformation monitoring and deviation correcting device and method - Google Patents

Abstract

The invention relates to a large-scale petroleum storage tank deformation monitoring and deviation correction device and method, which belong to the field of petroleum storage tank monitoring and deviation correction. The device includes a deformation monitoring device, a deviation correction device, and a controller; the storage tank body is arranged on a base; The monitoring device includes a track body, a scanner, and a stress monitoring device; the deviation correcting device includes a deviation correcting rope, a retractor, and a positioning lock, and the controller is electrically connected to the deformation monitoring device and the deviation correcting device respectively. A real-time monitoring device developed for large oil storage tanks with a capacity of 50,000 cubic meters and above. Due to the heavy weight of such large oil storage tanks during storage, the requirements for the base are relatively high. When the base subsides, the oil The center of gravity of the storage tank will be shifted and then deformed, and the pressure on the base will be higher. Therefore, this device is to ensure that the base is evenly stressed, to avoid deformation and rupture of the oil storage tank caused by excessive pressure on the base, and to ensure oil storage. The safety of canister use.

Description

A large oil storage tank deformation monitoring and correction device and method

technical field

The invention relates to a large oil storage tank deformation monitoring and deviation correction device and method, belonging to the field of oil storage tank monitoring and deviation correction.

Background technique

Oil resources are regarded as a strategic resource in the future development of the country, so it is necessary to ensure the normal storage and transportation of oil resources. With the development and maturity of oil drilling and production technology, the mining environment ranges from land, desert to deep sea, which requires oil resources to be able to be stored normally for a long time. At present, due to the development needs of the national oil strategy, the number and volume of oil tanks are also developing rapidly, with large oil tanks of 50,000 cubic meters and above being the most common. However, the larger the volume of large oil tanks, the greater the risk factor. Most of the large oil tanks in China are often composed of multiple circles of unequal thickness wall plates, which are placed on the elastic base in a non-anchored manner. Due to the large diameter of the foundation of the large oil tank, the foundation of the oil tank will inevitably break down after a long period of use. H Tr. Various settlements will lead to deformation of the storage tank body. The deformation of the storage tank will not only cause the floating roof to get stuck and cannot move up and down, which will reduce the storage capacity of the storage tank. Tearing occurs, resulting in leakage.

Contents of the invention

The purpose of the present invention is to provide a large-scale oil storage tank deformation monitoring and correction device and method for the above-mentioned problems, a real-time monitoring device developed for large-scale oil storage tanks with a capacity of 50,000 cubic meters and above. Due to the heavy weight of the storage tank during storage, the requirements for the base are relatively high. When the base subsides, the center of gravity of the oil storage tank will shift and deform, and the pressure on the base will be higher. Therefore, this The purpose of the device is to ensure that the base is evenly stressed, to avoid deformation and rupture of the oil storage tank caused by excessive pressure on the base, and to ensure the safety of the oil storage tank.

The technical scheme that the present invention adopts is as follows:

The invention discloses a deformation monitoring and deviation correction device for a large oil storage tank, which includes a deformation monitoring device, a deviation correction device, and a controller;

The storage tank body is arranged on the base;

The deformation monitoring device includes a track body, a scanner, and a stress monitoring device; the track body is erected horizontally around the tank body and connected to the base through a telescopic track pillar; the track body is spliced into a ring by multiple independent track pieces , a stress monitoring device is provided at the joint of the track piece, and the stress monitoring device is used to monitor the pressure when the joint of the track piece is misaligned; the scanner is arranged on the track and used to collect the shape data of the storage tank body;

The deviation correction device includes a deviation correction rope, a retractor, and a positioning lock. The retractor is set on the deviation correction rope to adjust the length of the deviation correction rope. The two ends of the deviation correction rope are respectively connected to the base and the storage tank body. lock or unlock the retractor;

The controller is electrically connected to the deformation monitoring device and the deviation correction device respectively. The controller is used to receive the scanner and control the deviation correction device to adjust the deflection of the storage tank body. .

In the above structure, the storage tank body and the track body are arranged on the base, and the track body surrounds the storage tank body. The track body is spliced by more than two track pieces, generally 3-6 track pieces. Welding and other processes are not used to fix it; when the base subsides, the track pieces on both sides of the joint will be displaced due to the uneven settlement of the base; after the displacement occurs, the pressure sensor in the stress monitoring device can monitor the displacement. The controller receives the pressure value, and then controls the ups and downs of the rail pillars to readjust the rail body to a horizontal state; the controller can compare the shape of the storage tank body scanned by the scanner with the original data, Determine whether the tank body is deflected, so as to control the deviation correction device to complete the deviation correction action. The included angle between the deviation correction rope and the tank body is 60-72 degrees, which can realize the deviation correction action with less effort; this device is a real-time monitoring device developed for large oil storage tanks with a capacity of 50,000 cubic meters and above. This large oil storage tank Due to its heavy weight during storage, the requirements for the base are relatively high. When the base subsides, the center of gravity of the oil storage tank will shift and deform, and the pressure on the base will be higher. Therefore, this device is In order to ensure the uniform force of the base, avoid the deformation and rupture of the oil storage tank caused by the excessive pressure of the base, and ensure the safety of the use of the oil storage tank.

Adjacent track pieces are connected end to end, and there is no fixed connection at the junction. There is a gap of -mm at the junction, and the mutual displacement of adjacent track pieces exerts pressure on the stress monitoring device. In the above structure, there is a gap of 3-5mm at the junction, which can facilitate the misalignment of adjacent track pieces, ensure that the track pieces will not produce friction, and affect the accuracy of the device’s monitoring. In addition, the track body composed of track pieces The radius of the tank body is 1.5-2.5 times the radius of the tank body. This distance can minimize the impact of the settlement of the base under the tank body on the track.

The track body includes an inner track and an outer track. The inner track and the outer track form a concentric ring and are at the same height. Two concentric ring-shaped tracks are set so that the scanner can always be aligned with the storage tank body, preventing the scanner from being in a single position. The root track needs to adjust the rotation of the scanner itself, simplify the equipment, and do not need extra equipment to adjust the scanning direction of the scanner.

The positioning lock is an electromagnetic lock, the expander is a hydraulic rod, and the track pillar is a hydraulic column. The use of electromagnetic locks, hydraulic rods, hydraulic columns and other devices can save the cost of the device. The above devices are all products that can be purchased directly on the market without customization, which provides convenience for the maintenance and use of the device; in addition, the hydraulic rod and The hydraulic column is connected to the hydraulic pump and the oil tank through the pipeline, and a valve is set on the pipeline. The controller controls the opening and closing of the valve to control the corresponding hydraulic rod or hydraulic column, and then controls the start and stop of the hydraulic pump to control the hydraulic rod or Adjustment of the hydraulic column.

The scanner is a three-dimensional scanner. The use of a three-dimensional scanner can facilitate three-dimensional modeling in the controller, and the three-dimensional scanner is a device that can be directly purchased on the market, which can further reduce the cost of using and maintaining the scanner.

The monitoring method of this deformation monitoring device is:

Step 1: When the foundation subsides, a dislocation occurs between adjacent track pieces and pressure is applied to the stress monitoring device. The pressure sensor in the stress monitoring device monitors the pressure data and sends it to the controller;

Step 2: After the controller receives the pressure data, according to the pressure data and the stress monitoring device, it controls the lifting of the corresponding track pillar and adjusts the adjacent track piece to a horizontal state;

Step 3: The scanner moves along the track and scans the storage tank, and collects the shape data of the storage tank. After the collected shape data is transmitted to the controller, the controller builds a 3D model based on the data collected by the scanner, and stores the 3D model Save as original model.

Step 4: Repeat step 3, and store the new 3D model as a skewed model;

Step 5: The controller extracts and compares the skewed model with the original model, and judges whether the skewed model is skewed and the amount of skewedness.

Due to the above method, the track level can be guaranteed when the base subsides, thereby reducing the scanner’s error caused by the subsidence of the base, and the scanning position of the scanner is always at the same height for scanning, which can effectively monitor the normal use of the device , the scanner performs three-dimensional modeling of the storage tank body, which can compare the storage tank body more intuitively, and can monitor the changes of the storage tank body more accurately. The monitoring accuracy reaches 1cm, that is, When the deflection changes above 1cm, the device can effectively monitor.

The deviation correction method of the deviation correction device is:

Step 1: When the storage tank body is deflected, the controller obtains the deflection data of the storage tank body and calculates the position and adjustment amount of the corresponding deviation correction device;

Step 2: According to the order of the adjustment amount from small to large, the controller sequentially controls the unlocking of the positioning lock of the corresponding deviation correction device, and then controls the expansion and contraction of the retractor to adjust the length of the deviation correction rope;

Step 3: When the expansion and contraction of the retractor reaches the adjustment value calculated by the controller, the positioning lock locks the deviation correction device again;

Step 4: When the corresponding deviation correcting devices are adjusted, complete the deviation correcting action.

The above deviation correction method can use the hydraulic pressure to control the length of the deviation correction rope to compensate the settlement of the base, so that the base under the storage tank body is evenly stressed, the service life of the base is improved, the normal use of the base is guaranteed, and the settlement of the base is avoided. Potential safety hazards are caused, and the use safety of the storage tank body is improved. The setting of the control sequence of the deviation correction device can adjust the deflection of the oil storage tank more quickly, and can adjust the oil storage tank in real time, and adjust the error between the calculated value and the actual value in real time.

In summary, owing to adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

1. The large-scale oil storage tank deformation monitoring and deviation correction device of the present invention has a simple structure, is convenient to install and use, and can be used as a real-time monitoring device for the storage tank body for a long time. It can effectively compensate for the settlement of the base under the storage tank body, and is a base The stress is uniform, which improves the storage safety of the storage tank body and ensures the safe use of the oil storage tank;

2. This device is a real-time monitoring device developed for large oil storage tanks with a capacity of 50,000 cubic meters and above. Due to the heavy weight of such large oil storage tanks during storage, the requirements for the base are relatively high. When the base When subsidence occurs, the center of gravity of the oil storage tank will shift and deform, and the pressure on the base will be higher. Therefore, this device is to ensure that the force on the base is even and avoid deformation of the oil storage tank due to excessive pressure on the base. Burst, to ensure the safety of oil storage tanks;

3. The monitoring and deviation correction method of this device is simple and easy to use, suitable for promotion, and can be installed on existing oil storage tanks, and the monitoring and deviation correction method of this device has high accuracy and can monitor oil storage tanks over 1cm The deflection of the tank, and the deviation correction method of this device uses hydraulic control to control the length of the correction rope to compensate the settlement of the base, so that the base under the storage tank body is evenly stressed, the service life of the base is improved, and the stability of the base is guaranteed. In normal use, its accuracy is high, and the position of the oil storage tank can be adjusted in time.

Description of drawings

Fig. 1 is the front view of the deformation monitoring and deviation correcting device for medium and large petroleum storage tanks of the present invention;

Fig. 2 is a top view of the deformation monitoring and deviation correcting device for medium and large oil storage tanks of the present invention;

Marks in the figure: 1-storage tank body, 2-base, 3-scanner, 4-retractor, 5-correction rope, 6-stress monitoring device, 7-track pillar, 8-track body.

detailed description

Below in conjunction with accompanying drawing, the present invention is described in detail.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Specific embodiment 1:

As shown in Figures 1 and 2, the large oil storage tank deformation monitoring and deviation correction device and method of the present invention,

The invention discloses a deformation monitoring and deviation correction device for a large oil storage tank, which includes a deformation monitoring device, a deviation correction device, and a controller;

The storage tank body 1 is arranged on the base 2;

The deformation monitoring device includes a track body 8, a scanner 3, and a stress monitoring device 6; the track body 8 is erected horizontally around the storage tank body 1, and the track body 8 is connected to the base 2 through a telescopic track pillar 7; the track body 8 It consists of 3-6 independent track pieces spliced into a complete ring. Adjacent track pieces are connected end to end, and there is no fixed connection at the junction. There is a gap of 3-5mm at the joint, and the adjacent track pieces are staggered. When this gap ensures that the track piece will not produce friction, the accuracy of monitoring is improved. In addition, the radius of the track body 8 composed of the track piece is 1.5-2.5 times the radius of the storage tank body 1. The setting of this radius can make the storage tank body 1 The impact of the settlement of the lower base 2 on the track is minimized.

A stress monitoring device 6 is arranged at the joint of the track pieces, and the mutual displacement of adjacent track pieces exerts pressure on the stress monitoring device 6, and the stress monitoring device 6 is used to monitor the pressure when the joint of the track pieces is misaligned; 6 is provided with a pressure sensor; the scanner 3 is arranged on the track and is used to collect the shape data of the storage tank body 1; the track body 8 includes an inner track and an outer track, which form a concentric ring and are at the same height. A concentric ring track can make the scanner 3 always align with the tank body 1, avoid the problem that the scanner 3 needs to adjust the rotation of the scanner 3 itself on a single track, simplify the equipment, and do not need extra equipment to adjust the scanner 3 scan direction. The scanner 3 is a three-dimensional scanner 3 . The three-dimensional modeling is performed in the controller, and the three-dimensional scanner 3 is a device that can be directly purchased on the market, which can further reduce the use and maintenance cost of the scanner 3 .

The deviation correction device includes a deviation correction rope 5, a retractor 4, and a positioning lock. The retractor 4 is arranged on the deviation correction rope 5 to adjust the length of the deviation correction rope 5. The two ends of the deviation correction rope 5 are respectively connected to the base 2 and the storage tank body 1, and the deviation correction One end of the rope 5 is fixed to the base 2 through an expansion nail, and the other end is fixed to the top of the storage tank body 1. The angle between the correction rope 5 and the storage tank is 60-72 degrees, generally 60 degrees; the positioning lock is set at The retractor 4 is used to lock or unlock the retractor 4;

The positioning lock has a retractable dead bolt, and the telescopic device 4 includes a telescopic frame and a telescopic rod. The positioning lock is fixed on the telescopic frame, and a keyhole is provided on the telescopic rod. When the deadbolt protrudes into the lock hole, the telescopic rod locks, and the positioning lock is an electromagnetic lock. The control end of the electromagnetic lock is electrically connected to the controller, and the locking or unlocking of the positioning lock is controlled by the controller. Rod, the length of the hydraulic rod is 30-50cm in the contracted state, and can be extended by 10-20cm; the track pillar 7 is a hydraulic column, and the length of the hydraulic column in the contracted state is 25-35cm; and it can be extended by 5-10cm; using electromagnetic lock , hydraulic rod, hydraulic column and other devices can save the cost of the device. The above-mentioned devices are all products that can be purchased directly on the market without customization, which provides convenience for the maintenance and use of the device; in addition, the hydraulic rod and the hydraulic column are respectively The hydraulic pump and the oil tank are connected through the pipeline, and a valve is set on the pipeline. The controller controls the opening and closing of the valve to control the corresponding hydraulic rod or hydraulic column, and then controls the start and stop of the hydraulic pump to control the hydraulic rod or hydraulic column. adjustment amount. This type of locking is only one of multiple locking methods, and other locking methods can also be used to lock the retractor 4 so that it cannot be stretched.

The controller is electrically connected to the deformation monitoring device and the deviation correction device respectively. The controller is used to receive the scanner 3 and control the deviation correction device to adjust the deflection of the storage tank body 1. The controller is used to receive the pressure of the stress monitoring device 6 and control the expansion and contraction of the rail pillar 7 to Make the track body 8 level. The controller includes components such as a microprocessor, a memory, and a display, and the microprocessor may be a computer, an MCU, or a single-chip microcomputer.

When the device is in use, the storage tank body 1 and the track body 8 are arranged on the base 2, and the track body 8 surrounds the storage tank body 1. The track body 8 is spliced by more than two track pieces, generally 3-6 track pieces are fixed without welding and other processes; when the base 2 settles, the track pieces on both sides of the splicing part are shifted due to the uneven settlement of the base 2; after the shift occurs, the stress The pressure sensor in the monitoring device 6 can monitor the pressure caused by the dislocation to the device, and the controller receives the pressure value, and then controls the lifting and lowering of the track pillar 7 to readjust the track body 8 to a horizontal state; 3 The scanned shape of the storage tank body 1 is compared with the original data to determine whether the storage tank body 1 is skewed, so as to control the deviation correction device to complete the deviation correction action. The angle between the deviation correction rope 5 and the storage tank body 1 is 60-72 degrees, which can realize the deviation correction action with less effort; this device is a real-time monitoring device developed for large oil storage tanks with a capacity of 50,000 cubic meters and above. Due to the heavy weight of the storage tank during storage, the requirements for the base 2 are relatively high. When the base 2 settles, the center of gravity of the oil storage tank will shift and deform, and the pressure on the base 2 will be higher. Therefore, the purpose of this device is to ensure that the force on the base 2 is uniform, avoid deformation and rupture of the oil storage tank caused by the excessive pressure of the base 2, and ensure the safety of the oil storage tank.

Specific embodiment 2:

The monitoring method of the deformation monitoring device in embodiment 2 is:

Step 1: When the base 2 settles, a shift occurs between adjacent track pieces and pressure is applied to the stress monitoring device 6, and the pressure sensor in the stress monitoring device 6 monitors the pressure data and sends it to the controller;

Step 2: After the controller receives the pressure data, according to the pressure data and the stress monitoring device 6, control the lifting of the corresponding track pillar 7 and adjust the adjacent track pieces to be in a horizontal state;

Step 3: The scanner 3 moves along the track and scans the storage tank, and collects the shape data of the storage tank. After the collected shape data is transmitted to the controller, the controller builds a three-dimensional model based on the data collected by the scanner 3, and stores the shape data of the tank. The 3D model is stored as the original model.

Step 4: Repeat step 3, and store the new 3D model as a skewed model;

Step 5: The controller extracts and compares the skewed model with the original model, and judges whether the skewed model is skewed and the amount of skewedness.

The above method can ensure the level of the track when the base 2 settles, thereby reducing the error of the scanner 3 due to the settlement of the base 2. The scanning position of the scanner 3 is always at the same height for scanning, which can effectively monitor the position of the device. In normal use, the scanner 3 performs three-dimensional modeling of the storage tank body 1, which can compare the storage tank body 1 more intuitively, and can more accurately monitor changes in the storage tank body 1. The accuracy reaches 1cm, that is, when the deflection change of more than 1cm occurs, the device can effectively monitor.

Specific embodiment 3:

Based on the device of embodiment 1 and the method of 2, the deviation correction method of this deviation correction device is:

Step 1: When the storage tank body 1 is deflected, the controller obtains the deflection data of the storage tank body 1 and calculates the position and adjustment amount of the corresponding deviation correction device;

Step 2: According to the order of the adjustment amount from small to large, the controller sequentially controls the unlocking of the positioning lock of the corresponding deviation correction device, and then controls the expansion and contraction of the retractor 4 to adjust the length of the deviation correction rope 5;

Step 3: When the stretching amount of the stretcher 4 reaches the adjustment amount calculated by the controller, the positioning lock re-locks the deviation correction device;

Step 4: When the corresponding deviation correcting devices are adjusted, complete the deviation correcting action.

The deviation correction method can use the hydraulic pressure to control the length of the deviation correction rope 5 to compensate the settlement of the base 2, so that the base 2 under the storage tank body 1 is evenly stressed, the service life of the base 2 is improved, and the normal use of the base 2 is guaranteed. , to avoid potential safety hazards caused by the subsidence of the base 2, and improve the use safety of the storage tank body 1. The setting of the control sequence of the deviation correction device can adjust the deflection of the oil storage tank more quickly, and can adjust the oil storage tank in real time, and adjust the error between the calculated value and the actual value in real time.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (7)

1. A deformation monitoring and deviation correction device for a large oil storage tank, characterized in that it comprises a deformation monitoring device, a deviation correction device, and a controller; The storage tank body (1) is set on the base (2); The deformation monitoring device includes a track body (8), a scanner (3), and a stress monitoring device (6); the track body (8) is erected horizontally around the storage tank body (1) and passed through a telescopic track support (7) It is connected to the base (2); the track body (8) is spliced into a ring shape by a plurality of independent track pieces, and a stress monitoring device (6) is provided at the joint of the track pieces, and the stress monitoring device (6) is used to monitor The pressure when the dislocation occurs at the joint of the track piece; the scanner (3) is arranged on the track and used to collect the shape data of the tank body (1); The deviation correction device includes a deviation correction rope (5), a retractor (4), and a positioning lock. The retractor (4) is arranged on the deviation correction rope (5) to adjust the length of the deviation correction rope (5). The two ends of the deviation correction rope (5) The base (2) and the storage tank body (1) are respectively connected, and the positioning lock is set on the retractor (4) for locking or unlocking the retractor (4); The controller is electrically connected to the deformation monitoring device and the deviation correction device respectively. The controller is used to receive the scanner (3) and control the deviation correction device to adjust the deflection of the tank body (1). The controller is used to receive the pressure of the stress monitoring device (6) and Control the expansion and contraction of the track pillar (7) so that the track body (8) is horizontal. 2. The deformation monitoring and deviation correction device for large oil storage tanks as claimed in claim 1, characterized in that the adjacent track pieces are connected end to end, and there is no fixed connection at the junction, and the junction has a gap of 3-5mm , the mutual displacement of adjacent track pieces exerts pressure on the stress monitoring device (6). 3. The large oil storage tank deformation monitoring and deviation correction device according to claim 1, characterized in that, the track body (8) includes an inner track and an outer track, and the inner track and the outer track form a concentric ring and are at the same height. 4. The deformation monitoring and deviation correction device for large oil storage tanks according to claim 1, characterized in that the positioning lock is an electromagnetic lock, the retractor (4) is a hydraulic rod, and the rail support (7) is a hydraulic column. 5. The deformation monitoring and deviation correction device according to claim 1, characterized in that, the scanner (3) is a three-dimensional scanner (3). 6. The large oil storage tank deformation monitoring and deviation correction device according to any one of claims 1-6, characterized in that, the monitoring method of the deformation monitoring device is: Step 1: When the base (2) settles, the adjacent track pieces are shifted and pressure is applied to the stress monitoring device (6). The pressure sensor in the stress monitoring device (6) monitors the pressure data and sends it to controller; Step 2: After the controller receives the pressure data, according to the pressure data and the stress monitoring device (6), control the lifting of the corresponding track pillar (7) and adjust the adjacent track piece to a horizontal state; Step 3: The scanner (3) moves along the track and scans the storage tank, and collects the shape data of the storage tank. After the collected shape data is transmitted to the controller, the controller builds a 3D model based on the data collected by the scanner (3) , and store the 3D model as the original model; Step 4: Repeat Step 3, and store the new 3D model as the skewed model; Step 5: The controller extracts and compares the skewed model with the original model, and judges whether the skewed model is skewed and the amount of skewed. 7. The large oil storage tank deformation monitoring and deviation correction device according to any one of claims 1-7, characterized in that, the deviation correction method of the deviation correction device is: Step 1: When the storage tank body (1) is deflected, the controller obtains the deflection data of the storage tank body (1) and calculates the position and adjustment amount of the corresponding deviation correction device; Step 2: According to the order of the adjustment amount from small to large, the controller sequentially controls the unlocking of the positioning lock of the corresponding deviation correction device, and then controls the stretcher (4) to expand and contract to adjust the length of the deviation correction rope (5); Step 3: When the expansion and contraction of the retractor (4) reaches the adjustment value calculated by the controller, the positioning lock re-locks the deviation correction device; Step 4: When the corresponding deviation correcting devices are adjusted, complete the deviation correcting action.