Fixture for laser length measurement of drill rod

Abstract

The utility model discloses a clamp used for drill rod laser length measurement, relates to the technical field of oil field production equipment, solves the technical problems that an existing drill rod measurement structure is complex and difficult to maintain, and comprises a detection table, a side plate and a supporting roller set are arranged on the detection table, and a sliding rail with scales is arranged on the detection table and right above the supporting roller set in parallel. A distance measuring module is arranged on the sliding rail and comprises a sliding table, a width measuring head, a length measuring head and a collector. Two edges of the diameter of the drill rod are respectively imaged on the two collectors under the irradiation of the parallel light sources, and the outer diameter of one end of the drill rod is obtained by processing and calculating electric signals sent by photoelectric conversion elements of the collectors and according to a feedback result and the fixed size between the two width measuring heads. The length of the drill rod can be calculated according to the moving distance of the sliding table and positioning of the length measuring heads on the two sides, the outer diameter and the length of the drill rod can be measured at a time, operation is simple, meanwhile, the collector and the measuring heads are fixedly installed, deviation is small, and measuring precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield production equipment. Background Art

[0002] In the process of oil and gas extraction and refining, drill pipes can be used multiple times. Drill pipes play a very important role in oil drilling. Drill pipes bear huge pressure, torsion and vibration during the working process. The specification standards of drill pipes are very important. Whether it is to produce brand-new drill pipes or recycle old drill pipes, precision measurement of drill pipes is required.

[0003] Optoelectronic measurement technology is a newly emerging and rapidly developing discipline in recent years. It uses a CCD sensor to摄取 detection images and convert them into digital signals, and then uses advanced computer hardware and software technologies to process the image digital signals to obtain various target image feature values required, and then displays the image and outputs data according to the results. Generally, an optoelectronic probe is used to measure the outer diameter size of drill pipes. For the measurement of drill pipe length, a complex scanning system is often required. Its built structure is complex, and it is necessary to frequently check that the probe and the collector are facing each other correctly, with low measurement efficiency and difficult maintenance. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fixture for laser length measurement of drill pipes, which can measure the length and width of drill pipes at one time, with high measurement efficiency, convenient installation and simple operation, so as to solve the above technical problems.

[0005] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0006] A fixture for laser length measurement of drill pipes includes a detection table, on which side plates and a support roller group are provided. There are at least two groups of the support roller group and they are all arranged on the side plates. A scale-equipped slide rail is arranged parallel to the support roller group directly above the detection table. A ranging module is arranged on the slide rail. The ranging module includes a slide table, a width measurement probe, a length measurement probe and a collector. The slide table is arranged in a "C" shape and a through slot for the slide rail to pass through is provided at the upper top end. The horizontal height of the upper end face of the lower part of the slide table is lower than that of the support roller group. Two width measurement probes are symmetrically distributed on the vertically downward end face of the upper part of the slide table. The length measurement probe is located on the vertically downward end face of the upper part of the slide table and is in the same vertical plane as the support roller group. The collector is located on the vertically upward end face of the lower part of the slide table.

[0007] With the above solution, the sliding table is in a "C" shape and its lower end is lower than the support roller group. This setting does not affect the sliding of the sliding table. The drill pipe is placed into the support roller group, and at the same time, the distance measuring module is moved. The sliding table is moved to one end of the drill pipe. By symmetrically setting the width measuring heads and cooperating with the receiving collector, under the illumination of the parallel light source, the two edges of the diameter of the drill pipe are respectively imaged on the two collectors. After processing and calculating the electrical signals emitted by the optoelectronic conversion elements of the collectors, adding the fixed dimension between the two width measuring heads according to the feedback result, the outer diameter of one end of the drill pipe can be easily obtained. At the same time, the length measuring head records the position of the end of the drill pipe, and at the same time records the position of the sliding table on the slide rail. Subsequently, the sliding table is moved to the other end of the drill pipe, and the operation is repeated. The outer diameter of the other end of the drill pipe is recorded. At the same time, according to the moving distance of the sliding table and the positioning of the two length measuring heads on both sides, the length of the drill pipe can be calculated, and the outer diameter and length of the drill pipe can be measured at one time. The operation is simple. At the same time, both the collector and the measuring head are fixedly installed, with small deviation and high measurement accuracy.

[0008] Further, at least 2 sets of distance measuring modules are provided, and anti-collision pads are provided on the opposite sides of adjacent sliding tables.

[0009] With the above solution, at least 2 sets of distance measuring modules are provided, that is, distance measuring modules are respectively set at different positions of the drill pipe. The outer diameter and length of different positions of the drill pipe can be measured simultaneously, and the measurement of the drill pipe data can be completed at one time, greatly improving the measurement efficiency. The anti-collision pads are provided to weaken the mutual rigid collision generated by the moving sliding table parts.

[0010] Further, the width measuring head, the length measuring head and the sliding table are connected by plug-in connection.

[0011] With the above solution, the width measuring head, the length measuring head and the sliding table are connected by plug-in connection, which is convenient for replacing the measuring head and convenient for later maintenance.

[0012] Further, an observation port is opened on the side wall of the sliding table opposite to the scale of the slide rail, and a lens with a marking point is provided at the observation port.

[0013] With the above solution, the lens is provided to facilitate magnifying the scale, facilitating aligning the marking point with the scale point, facilitating observing the positioning position of the sliding table, with accurate reading and improved measurement accuracy.

[0014] Further, rolling rollers abuting against the slide rail are provided in the through groove.

[0015] With the above solution, the rolling rollers are provided, and rolling friction is used to replace sliding friction, which is convenient for pushing the sliding table. At the same time, the friction loss between the sliding table and the slide rail is reduced, and the detection accuracy is maintained.

[0016] Further, snap rings for bundling wire groups are provided at both ends of the slide rail.

[0017] With the above solution, the snap rings are provided to facilitate bundling various measuring head wire groups and maintain the neatness and order of the detection site.

[0018] Furthermore, the slide rail scale has a plurality of distance marks arranged in an array at intervals along the length direction, and the distance marks are a combination of distance numbers and color spray paint.

[0019] Through the above solution, distance marks are set, and a combination of distance numbers + color spray paint is used to quickly find the approximate distance, facilitate rapid adjustment of the slide position according to the drill rod batch requirements, and improve measurement efficiency.

[0020] The beneficial effects of the utility model are as follows:

[0021] 1. The utility model has a simple structure. When measuring, the drill rod is placed in the support roller group, and the distance measuring module is moved at the same time. The slide is moved to one end of the drill rod. The width measuring probes are symmetrically arranged to cooperate with the receiving collector. The two edges of the drill rod diameter are imaged on the two collectors under the illumination of parallel light sources. After processing and calculating the electrical signals emitted by the photoelectric conversion elements of the collectors, the outer diameter of one end of the drill rod can be easily obtained according to the feedback results and the fixed size between the two width measuring probes. At the same time, the length measuring probe records the position of the end of the drill rod and the position of the slide on the slide rail. Then, the slide is moved to the other end of the drill rod, and the operation is repeated to record the outer diameter of the other end of the drill rod. At the same time, the length of the drill rod can be calculated according to the moving distance of the slide and the positioning of the length measuring probes on both sides. The outer diameter and length of the drill rod are measured at one time. The operation is simple. At the same time, the collector and the probe are fixedly installed, the deviation is small, and the measurement accuracy is high.

[0022] 2. Set up at least two sets of ranging modules, that is, set up ranging modules at different positions of the drill rod respectively, which can measure the outer diameter and length of the drill rod at different positions at the same time, and complete the measurement of the drill rod data at one time, which greatly improves the measurement efficiency. Set up anti-collision pads to reduce the mutual rigid collision caused by the moving slide parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention, in which the width measuring probe, length measuring probe, and collector are shown as position marking examples for ease of display.

[0024] Figure 2 This is a schematic structural diagram of the slide portion of the utility model from a side view;

[0025] Figure 3 This is a structural diagram of the slide part of the utility model from the main perspective

[0026] Figure numerals: 11, testing table; 12, side plate; 13, supporting roller group; 14, slide rail; 15, slide; 16, width measuring probe; 17, length measuring probe; 18, collector; 19, through groove; 20, distance mark; 21, observation port; 22, lens; 23, rolling roller; 24, retaining ring; 25, anti-collision pad. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, 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 some but not all of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0028] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0029] Embodiment 1

[0030] As Figure 1 and Figure 2 and Figure 3 shown, this embodiment provides a fixture for laser length measurement of drill pipes, including a detection table 11, on which side plates 12 and a support roller group 13 are provided. There are at least two groups of the support roller group 13 and they are all arranged on the side plates 12. Above the support roller group 13 on the detection table 11, a scale-equipped slide rail 14 is arranged in parallel. The ranging module includes a slide table 15, a width measurement probe 16, a length measurement probe 17 and a collector 18. The width measurement probe 16 and the length measurement probe 17 are common measurement light sources in the market, generating parallel light beams. The collector 18 is also a common device, which contains a collection lens, a photoelectric conversion element and a collection circuit inside. The slide table 15 is arranged in a "C" shape and a through slot 19 for the slide rail 14 to pass through is provided at the upper top end. The horizontal height of the upper end face of the lower part of the slide table 15 is lower than that of the support roller group 13. (For the convenience of display, the positions of the width measurement probe 16, the length measurement probe 17 and the collector 18 are examples of position marks). Two width measurement probes 16 are symmetrically distributed on the vertically downward end face of the upper part of the slide table 15. The length measurement probe 17 is located on the vertically downward end face of the upper part of the slide table 15 and is in the same vertical plane as the support roller group 13. The collector 18 is located on the vertically upward end face of the lower part of the slide table 15.

[0031] Therefore, the sliding table 15 is in a "C" shape with its lower end lower than the support roller group 13. This setting does not affect the sliding of the sliding table 15. The drill pipe is placed into the support roller group 13. At the same time, the distance measuring module is moved, and the sliding table 15 is moved to one end of the drill pipe. By symmetrically setting the width measuring probes 16 and cooperating with the receiver 18, when the two edges of the diameter of the drill pipe are irradiated by the parallel light source, they are respectively imaged on the two receivers 18. After processing and calculating the electrical signals emitted by the photoelectric conversion elements of the receivers 18, and adding the fixed dimension between the two width measuring probes 16 according to the feedback result, the outer diameter of one end of the drill pipe can be easily obtained. Specifically, when the measured drill pipe is placed between the two beams of parallel light, shadows will appear on the images of the photoelectric conversion elements of the receivers 18. Let their widths be H1 and H2 respectively. The receivers 18 are provided with photoelectric conversion elements. By processing and calculating the electrical signals emitted by the photoelectric conversion elements, the dimensions T1 and T2 corresponding to H1 and H2 can be obtained. The outer diameter L of the measured drill pipe can be obtained by adding T1 and T2 and the net distance X between the two probes. At the same time, the length measuring probe 17 records the position of the end of the drill pipe, and at the same time records the position of the sliding table 15 on the slide rail 14. Subsequently, the sliding table 15 is moved to the other end of the drill pipe, and the operation is repeated to record the outer diameter of the other end of the drill pipe. At the same time, based on the moving distance of the sliding table 15 and the positioning of the two length measuring probes 17 on both sides, the length of the drill pipe can be calculated, and the outer diameter and length of the drill pipe can be measured at one time. The operation is simple. At the same time, the receiver 18 and the probes are fixedly installed, with small deviation and high measurement accuracy.

[0032] Referring to Figure 1 , in order to improve the operation convenience of the device, referring to Figure 1 , a number of distance marks 20 are arranged at intervals along the length direction of the scale of the slide rail 14. The distance marks 20 are a combination of distance numbers + colored paint spraying. An observation port 21 is provided at the position where the side wall of the sliding table 15 faces the scale of the slide rail 14. A lens 22 with a marking point is provided at the observation port 21. Referring to Figure 1 and Figure 2 , a rolling roller 23 abuting against the slide rail 14 is provided in the through groove 19. By setting the distance marks 20 and adopting the combination of distance numbers + colored paint spraying, it is convenient to quickly find the approximate distance, which is convenient for quickly adjusting the position of the sliding table 15 according to the requirements of the drill pipe batch and improving the measurement efficiency. By setting the lens 22, it is convenient to magnify the scale, and it is convenient to align the marking point with the scale point, which is convenient for observing the positioning position of the sliding table 15, with accurate reading and improved measurement accuracy. By adopting rolling friction to replace sliding friction, it is convenient to push the sliding table 15, and at the same time, the friction loss between the sliding table 15 and the slide rail 14 is reduced, and the detection accuracy is maintained.

[0033] Referring to Figure 1 For further convenient maintenance, referring to Figure 1 and Figure 2 and Figure 3, snap rings 24 for collecting wire groups are provided at both ends of the slide rail 14, and the width measuring probe 16 and the length measuring probe 17 are connected to the slide table 15 by plug-in connection. The width measuring probe 16 and the length measuring probe 17 are connected to the slide table 15 by plug-in connection, which is convenient for replacing the probes and for later maintenance. The snap rings 24 are provided to facilitate the collection of various probe wire groups and maintain the cleanliness and orderliness of the detection site.

[0034] Embodiment 2

[0035] The structure of Embodiment 2 is basically the same as that of Embodiment 1, except that a ranging module is provided on the slide rail 14, at least two groups of ranging modules are provided, and anti-collision pads 25 are provided on the opposite sides of adjacent slide tables 15. By providing at least two groups of ranging modules, that is, by providing ranging modules at different positions of the drill pipe respectively, the outer diameter and length of different positions of the drill pipe can be measured simultaneously, and the measurement of the drill pipe data can be completed at one time, greatly improving the measurement efficiency. The anti-collision pads 25 are provided to weaken the mutual rigid collision generated between the moving slide tables 15.

[0036] Implementation principle: The slide table 15 is in a "U" shape and its lower end is lower than the support roller group 13. This setting does not affect the sliding of the slide table 15. The drill pipe is placed into the support roller group 13, and at the same time, the ranging module is moved. The slide table 15 is moved to one end of the drill pipe. With the symmetrically arranged width measuring probes 16 cooperating with the receiving collector 18, the two edges of the diameter of the drill pipe are imaged on the two collectors 18 respectively under the illumination of the parallel light source. After processing and calculating the electrical signals emitted by the photoelectric conversion elements of the collector 18, and adding the fixed dimension between the two width measuring probes 16 according to the feedback result, the outer diameter of one end of the drill pipe can be easily obtained. At the same time, the length measuring probe 17 records the position of the end of the drill pipe, and at the same time records the position of the slide table 15 on the slide rail 14. Subsequently, the slide table 15 is moved to the other end of the drill pipe, and the operation is repeated to record the outer diameter of the other end of the drill pipe. At the same time, according to the moving distance of the slide table 15 and the positioning of the two length measuring probes 17 on both sides, the length of the drill pipe can be calculated. By providing at least two groups of ranging modules, that is, by providing ranging modules at different positions of the drill pipe respectively, the outer diameter and length of different positions of the drill pipe can be measured simultaneously, and the measurement of the drill pipe data can be completed at one time, greatly improving the measurement efficiency. The anti-collision pads 25 are provided to weaken the mutual rigid collision generated between the moving slide tables 15. The outer diameter and length of the drill pipe are measured at one time, the operation is simple, and at the same time, the collector 18 and the probes are fixedly installed, with small deviation and high measurement accuracy.

Claims

1. A fixture for laser length measurement of drill rods, comprising a detection table (11), characterized in that: On the detection table (11), there are side plates (12) and a support roller group (13). There are at least two sets of the support roller group (13), and all are arranged on the side plates (12). Above the support roller group (13) on the detection table (11), there is a scale-equipped slide rail (14) arranged in parallel. On the slide rail (14), there is a distance measurement module, and the distance measurement module includes a slide table (15), a width measurement probe (16), a length measurement probe (17), and a collector (18); the slide table (15) is arranged in a "C" shape, and there is a through slot (19) at the upper end of the upper part for the slide rail (14) to pass through. The horizontal height of the upper end surface of the lower part of the slide table (15) is lower than that of the support roller group (13). There are two width measurement probes (16) symmetrically distributed on the vertical lower end surface of the upper part of the slide table (15). The length measurement probe (17) is located on the vertical lower end surface of the upper part of the slide table (15) and is in the same vertical plane as the support roller group (13). The collector (18) is located on the vertical upper end surface of the lower part of the slide table (15).

2. The fixture for laser length measurement of drill rods according to claim 1, characterized in that: There are at least 2 sets of the distance measurement module, and anti-collision pads (25) are provided on the opposite sides of adjacent slide tables (15).

3. The fixture for laser length measurement of drill rod according to claim 1, characterized in that: The width measurement probe (16), the length measurement probe (17) and the slide table (15) are connected by plug-in connection.

4. The fixture for laser length measurement of drill rods according to claim 1, characterized in that: On the side wall of the slide table (15) facing the scale of the slide rail (14), there is an observation port (21), and at the observation port (21), there is a lens (22) with a marking point.

5. The fixture for laser length measurement of drill rods according to claim 4, characterized in that: In the through slot (19), there is a rolling roller (23) in contact with the slide rail (14).

6. The fixture for laser length measurement of drill rods according to claim 1, characterized in that: At both ends of the slide rail (14), there are snap rings (24) for collecting wire groups.

7. The fixture for laser length measurement of drill rods according to claim 1, characterized in that: Along the length direction of the scale of the slide rail (14), there are a number of distance marks (20) arranged at intervals. The distance marks (20) are a combination of distance numbers + colored paint spraying.

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