A remote load sensor righting and balancing device

Abstract

The utility model belongs to oilfield exploitation technical field, concretely relates to a kind of remote load sensor righting balancing device, to solve the problems, such as the distortion of measurement data, installation and debugging difficulties and the easy damage of sensor, caused by uneven stress and difficult righting of remote load sensor in prior art.The utility model includes: upper righting balancing device, and upper righting balancing device includes balance plate and righting block;Righting block and balance plate are jointly provided with light pole semicircular type clamping groove for holding light rod;The both sides of the lower end surface of balance plate are provided with contact card slot for accommodating remote load sensor contact;Righting block is also provided with bolt through-hole for remote load sensor bolt passing through.The utility model realizes the balanced force and radial righting of remote load sensor by the combination structure of balance plate and righting block, to significantly improve the data measurement accuracy, simplify installation operation and effectively protect sensor equipment.

Description

Technical Field

[0001] This utility model belongs to the field of oilfield development technology, and specifically relates to a remote load sensor uprighting and balancing device. Background Technology

[0002] With the deepening development of oilfield informatization, remote load sensors, as key data acquisition devices, play an irreplaceable role in the real-time monitoring and fault diagnosis of pumping wells. They are typically installed on the polished rod at the wellhead, between the square clamp and the suspension cable, and collect and transmit load data from the polished rod to create dynamometer diagrams, thus reflecting the well's production status. The accuracy of their operation directly affects the correctness of production judgments and the oilfield's production efficiency.

[0003] In existing installation techniques, remote load sensors are primarily secured to a guide rod via their U-shaped slots and bolts. Their lower surface is flat, contacting the upper surface of the suspension device; while the upper surface has two protruding contact points that contact the bottom surface of the square clip above, thus sensing and transmitting the load. However, this point-to-surface contact method of force transmission reveals several inherent drawbacks in practical applications:

[0004] First, measurement accuracy is difficult to guarantee. Due to the unavoidable assembly gap between the sensor slot and the cylindrical guide rod, the sensor has radial play in the guide rod, making it prone to skew during operation. This results in severely uneven pressure exerted by the square clamp on the two sensor contacts, causing distortion in load signal acquisition. Consequently, the dynamometer data cannot accurately reflect the actual working conditions downhole, thus affecting the accuracy of data analysis.

[0005] Secondly, the installation and debugging process is cumbersome. On-site specifications require that the sensor be kept perpendicular to the suspension device, but during the process of tightening the square clamps, the uneven contact surface can easily cause the sensor to tilt. Operators often need to repeatedly disassemble and adjust it to achieve a vertical position, which greatly increases the difficulty and workload of on-site installation.

[0006] Furthermore, the equipment itself is prone to damage. Working under uneven stress conditions for a long time can easily damage the internal sensitive elements of the sensor due to overload or impact, shortening the service life of the equipment and increasing production costs.

[0007] A search revealed that some auxiliary devices for sensors also exist in the existing technology. For example, Chinese patent CN206957697U discloses a straightening device that fills the gap between the sensor and the guide rod with a rubber part, but it does not solve the core problem of uneven force at the contact points between the sensor and the square clip. Another Chinese patent CN208830995U mainly focuses on the external anti-collision protection of the sensor, without addressing installation straightening or improving data accuracy.

[0008] Therefore, there is an urgent need in the field for a device that can effectively solve the above problems, ensure that the sensor is installed vertically, subjected to balanced forces, provides accurate data, and is easy to operate. Utility Model Content

[0009] To address the aforementioned problems in the prior art, namely the distortion of measurement data, difficulties in installation and debugging, and easy damage to the sensor caused by uneven installation force and difficulty in aligning the remote load sensor, this utility model provides a remote load sensor aligning and balancing device, comprising:

[0010] An upper straightening and balancing device, the upper straightening and balancing device comprising a balancing plate and a straightening block;

[0011] The straightening block and the balance plate together have a semi-circular groove for holding the optical rod.

[0012] The lower end face of the balance plate has contact slots on both sides for accommodating remote load sensor contacts.

[0013] The straightening block is also provided with bolt through holes for the remote load sensor bolts to pass through.

[0014] Furthermore, it also includes a lower straightening device, which includes a remote load sensor concave slot and a suspension rope device concave slot;

[0015] The concave slot of the remote load sensor is used to be locked onto the bottom of the remote load sensor, and the concave slot of the suspension device is used to be locked onto the suspension device. The concave slot of the remote load sensor and the concave slot of the suspension device cooperate with each other to keep the remote load sensor and the suspension device perpendicular.

[0016] Furthermore, the balance plate has U-shaped grooves at both ends, the width of which is the same as the width of the U-shaped groove on the suspension device, for securing the braid.

[0017] Furthermore, there are two contact slots, and the positions of the two contact slots correspond one-to-one with the positions of the two remote load sensor contacts on the remote load sensor.

[0018] Furthermore, the contact slot is an inverted conical rounded groove.

[0019] Furthermore, the bottom diameter of the contact slot is larger than the diameter of the remote load sensor contact, and the depth of the contact slot is smaller than the height of the remote load sensor contact.

[0020] Furthermore, the straightening block and the balancing plate are integrally formed as a single structure.

[0021] Furthermore, the radius of the semi-circular slot of the optical rod is adapted to the radius of the optical rod, and a working gap is maintained between the semi-circular slot of the optical rod and the optical rod.

[0022] Furthermore, the shape of the concave slot of the remote load sensor is adapted to the shape of the bottom of the remote load sensor, and the shape of the concave slot of the suspension device is adapted to the shape of the upper part of the suspension device.

[0023] Furthermore, the upper straightening and balancing device is fixedly connected to the remote load sensor via a remote load sensor bolt passing through the bolt through hole.

[0024] The beneficial effects of this utility model are:

[0025] This invention features a contact slot on the lower end face of the balance plate that corresponds to the contact point of the remote load sensor. This structure can evenly distribute the load applied by the upper clip to the two contacts of the sensor, effectively solving the measurement error of the dynamometer data caused by uneven force on the two points, and enabling the collected data to truly reflect the production status of the oil well.

[0026] The semi-circular groove on the straightening block of this utility model can hold the optical rod tightly. Together with the balance plate, it restricts the movement of the sensor in the radial direction of the optical rod, so that it can be quickly and initially straightened during installation. This avoids the problem of the sensor needing repeated adjustments due to easy tilting, and reduces the difficulty of operation.

[0027] This invention achieves balanced force distribution through a balance plate and restricts swaying through a straightening block, fundamentally avoiding damage to internal components of the sensor caused by long-term exposure to off-center loads and improper installation stress, thereby reducing equipment failure rate and replacement costs. Attached Figure Description

[0028] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of a remote load sensor balancing device.

[0030] Figure 2 This is a schematic diagram of a remote load sensor uprighting and balancing device.

[0031] Figure 3 This is a schematic diagram of a remote load sensor-based uprighting device.

[0032] Figure 4 This is a schematic diagram of a remote load sensor balancing device in use in the field.

[0033] Figure 5 This is a schematic diagram of a remote load sensor. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] This utility model provides a remote load sensor straightening and balancing device. The device includes an upper straightening and balancing unit, which comprises a balancing plate 1 and a straightening block 2. The straightening block 2 and the balancing plate 1 together have a semi-circular groove 3 for gripping the optical rod 8, and its structure can be described as follows: Figure 1 and Figure 2 As shown, the slot can be formed by the semi-circular groove on the straightening block 2 and the lower surface of the balance plate 1. The lower end face of the balance plate 1 has contact slots 5 on both sides for accommodating the remote load sensor contacts 15, such as... Figure 1 As shown, the positions of these two slots precisely correspond to the two protruding contacts 15 on the upper surface of the remote load sensor 11. The straightening block 2 also has bolt through holes 4 for the remote load sensor bolt 13 to pass through, such as... Figure 2 As shown, the through hole allows the device to be fixed using the original bolts of the sensor. This structure evenly distributes the pressure of the square clip 9 to the two sensor contacts 15 through the balance plate 1, solving the problem of uneven force distribution; at the same time, the straightening block 2 holds the light rod 8 tightly through the semi-circular groove 3 of the light rod, limiting the radial sway of the sensor and achieving initial straightening.

[0037] The remote load sensor straightening and balancing device also includes a lower straightening device, which comprises a remote load sensor concave slot 6 and a suspension rope device concave slot 7. Its usage status can be found in [reference needed]. Figure 3The remote load sensor concave slot 6 is used to engage with the bottom of the remote load sensor 11, and the suspension device concave slot 7 is used to engage with the suspension device 14. The remote load sensor concave slot 6 and the suspension device concave slot 7 cooperate with each other to keep the remote load sensor 11 perpendicular to the suspension device 14. Specifically, the shape of the remote load sensor concave slot 6 is designed to fit snugly against both sides of the bottom of the remote load sensor 11, while the shape of the suspension device concave slot 7 is designed to sit stably on a specific structure above the suspension device 14. When these two slots are correctly installed, they work together to constrain the remote load sensor 11 from the bottom, ensuring that its axis is substantially coincident with the axis of the suspension device 14, thus meeting the on-site specifications for vertical installation. This structure provides a second layer of alignment protection, working in conjunction with the upper alignment and balancing device to ensure that the sensor always maintains an ideal vertical posture.

[0038] The balance plate 1 has U-shaped grooves at both ends, the width of which is the same as the width of the U-shaped groove on the suspension device 14, for securing the hair braid 10. This feature allows it to... Figure 4 As observed in the on-site usage diagram, during actual installation, the oil pump's braid 10 passes through the U-shaped groove of the suspension cable 14. The U-shaped grooves at both ends of the balance plate 1 are also designed to be of the same width, allowing the balance plate 1 to temporarily engage with the braid 10 during installation. This provides initial, stable support and radial positioning for the entire device before tightening the square clip 9 and other components, greatly facilitating single-person operation on-site, reducing the risk of the device falling during installation, and assisting in initial alignment.

[0039] like Figure 5 As shown, there are two contact slots 5, and the positions of the two contact slots 5 correspond one-to-one with the positions of the two remote load sensor contacts 15 on the remote load sensor 11. This arrangement ensures that the load from the balance plate 1 can be accurately and without deviation transferred to the two core force points of the sensor, which is the basic structure for achieving balanced force and avoiding measurement errors.

[0040] The contact slot 5 is an inverted conical rounded groove. The inverted conical design better guides the remote load sensor contact 15 into the bottom of the groove and provides a certain degree of enclosure and self-centering for the contact. The rounded transition avoids sharp edges and prevents stress concentration under long-term alternating loads, which could cause cracks or damage to the balance plate 1 at the edge of the slot, thus improving the durability and reliability of the device.

[0041] The bottom diameter of the contact slot 5 is larger than the diameter of the remote load sensor contact 15, and the depth of the contact slot 5 is less than the height of the remote load sensor contact 15. The larger bottom diameter ensures that even with minor installation deviations or manufacturing tolerances, the top of the remote load sensor contact 15 can sit smoothly on the bottom bearing surface of the contact slot 5, guaranteeing effective force transmission. The smaller depth ensures that when the square clip 9 presses down on the balance plate 1, the load is transmitted to the sensor's sensitive element through the contact, rather than being borne by the sensor housing, thus ensuring the accuracy of data acquisition.

[0042] The straightening block 2 and the balancing plate 1 are integrally formed. This integral structure can be formed in one piece through processes such as casting or forging. The advantages of this are that it simplifies the manufacturing process, reduces costs, and completely eliminates the risks of loosening or stress fatigue that may exist in separate connections, resulting in higher structural rigidity and overall strength of the entire upper straightening and balancing device, and a longer service life.

[0043] The radius of the semi-circular groove 3 on the optical rod is matched with the radius of the optical rod 8, and a working gap is maintained between the semi-circular groove 3 and the optical rod 8. The matched radius ensures that the straightening block 2 and the optical rod 8 have sufficient contact area to provide a stable straightening effect. Maintaining a small radial working gap is crucial, as it allows for minor adjustments to the device on the optical rod, facilitating final alignment and fixation, while also accommodating slight thermal expansion and contraction or vibration that may occur during operation, preventing the optical rod from jamming.

[0044] The shape of the concave slot 6 of the remote load sensor is adapted to the shape of the bottom of the remote load sensor 11, and the shape of the concave slot 7 of the suspension device is adapted to the shape of the upper part of the suspension device 14. Here, "adaptation" refers to complementary and matching shapes. For example, if the bottom of the remote load sensor 11 has a rectangular cross-section, then the concave slot 6 of the remote load sensor is also a rectangular groove accordingly; if the upper part of the suspension device 14 is cylindrical, then the concave slot 7 of the suspension device can be designed as a V-shaped or arc-shaped groove that matches it. This precise shape adaptation ensures that the slots can fit tightly against the corresponding components, reliably achieving the function of forced vertical alignment.

[0045] The upper balancing device is fixedly connected to the remote load sensor 11 via a remote load sensor bolt 13 passing through the bolt through hole 4. This is a crucial installation feature of this invention. In practice, first remove the original remote load sensor bolt 13, then insert the balancing block 2 of the upper balancing device into the U-shaped slot of the remote load sensor 11, aligning the bolt through hole 4 with the screw hole of the sensor body. Finally, pass the remote load sensor bolt 13 through the bolt through hole 4 and tighten it. The advantage of this connection method is that it greatly simplifies the installation process, achieving "plug and play," requiring no modification to existing sensors or wellhead equipment, and offering excellent compatibility.

[0046] The on-site installation process of this utility model can be combined with Figure 4 The process mainly includes the following steps: First, unload the pumping unit to separate the square clamp 9 from the suspension rope device 14 by a sufficient distance. Second, place the concave slot 7 of the suspension rope device of the lower straightening device onto the suspension rope device 14 and fix it in place. Next, remove the remote load sensor bolt 13, insert the remote load sensor 11 into the smooth rod 8, and let its bottom sit in the concave slot 6 of the remote load sensor. Then, install the assembled upper straightening and balancing device, ensuring that its contact slot 5 is aligned with the sensor contact 15, and that its semi-circular slot 3 of the smooth rod rests on the smooth rod 8. Finally, use the remote load sensor bolt 13 to pass through the bolt through hole 4 of the straightening block 2 to fasten the entire upper straightening and balancing device and the remote load sensor 11 together, and make the square clamp 9 sit stably on the balance plate 1. The whole process is simple to operate and effectively ensures the verticality and force balance of the sensor.

[0047] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.

[0048] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0049] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A remote load sensor straightening and balancing device, characterized in that, include: The upper straightening and balancing device includes a balancing plate (1) and a straightening block (2). The straightening block (2) and the balance plate (1) are provided with a semi-circular groove (3) for holding the light rod (8). The lower end face of the balance plate (1) is provided with contact slots (5) on both sides for accommodating remote load sensor contacts (15). The straightening block (2) is also provided with a bolt through hole (4) for the remote load sensor bolt (13) to pass through.

2. The remote load sensor straightening and balancing device according to claim 1, characterized in that, It also includes a lower straightening device, which includes a remote load sensor concave slot (6) and a suspension rope device concave slot (7). The concave slot (6) of the remote load sensor is used to be locked at the bottom of the remote load sensor (11), and the concave slot (7) of the suspension device is used to be locked on the suspension device (14). The concave slot (6) of the remote load sensor and the concave slot (7) of the suspension device cooperate with each other so that the remote load sensor (11) and the suspension device (14) remain perpendicular.

3. The remote load sensor straightening and balancing device according to claim 1, characterized in that, The balance plate (1) has U-shaped grooves at both ends, and the width of the U-shaped grooves is the same as the width of the U-shaped grooves on the suspension device (14) to hold the hair braid (10).

4. The remote load sensor straightening and balancing device according to claim 1, characterized in that, There are two contact slots (5), and the positions of the two contact slots (5) correspond one-to-one with the positions of the two remote load sensor contacts (15) on the remote load sensor (11).

5. The remote load sensor straightening and balancing device according to claim 1 or 4, characterized in that, The contact slot (5) is an inverted conical rounded groove.

6. The remote load sensor straightening and balancing device according to claim 5, characterized in that, The bottom diameter of the contact slot (5) is greater than the diameter of the remote load sensor contact (15), and the depth of the contact slot (5) is less than the height of the remote load sensor contact (15).

7. The remote load sensor straightening and balancing device according to claim 1, characterized in that, The straightening block (2) and the balancing plate (1) are integrally formed.

8. The remote load sensor straightening and balancing device according to claim 1, characterized in that, The radius of the semi-circular slot (3) of the optical rod is adapted to the radius of the optical rod (8), and a working gap is maintained between the semi-circular slot (3) of the optical rod and the optical rod (8).

9. The remote load sensor straightening and balancing device according to claim 2, characterized in that, The shape of the concave slot (6) of the remote load sensor is adapted to the shape of the bottom of the remote load sensor (11), and the shape of the concave slot (7) of the suspension device is adapted to the shape of the upper part of the suspension device (14).

10. The remote load sensor straightening and balancing device according to claim 1 or 2, characterized in that, The upper straightening and balancing device is fixedly connected to the remote load sensor (11) by a remote load sensor bolt (13) passing through the bolt through hole (4).

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