CN209840946U - Drill rod joint outer cone thread coaxiality detection system - Google Patents
Drill rod joint outer cone thread coaxiality detection system Download PDFInfo
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- CN209840946U CN209840946U CN201921045414.0U CN201921045414U CN209840946U CN 209840946 U CN209840946 U CN 209840946U CN 201921045414 U CN201921045414 U CN 201921045414U CN 209840946 U CN209840946 U CN 209840946U
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Abstract
The utility model discloses a drill rod joint external taper thread coaxiality detection system, which comprises a detection mechanism and a detection data processing device; the detection mechanism comprises a digital display dial indicator, a coded disc for a shaft, a tensioning mechanism and a rotary gauge stand arranged on the tensioning mechanism; a coded disc for a shaft is arranged on a rotating seat of the rotating meter seat, and a digital display dial indicator is fixed at the bottom of a support hanging rod extending out of the rotating meter seat; and the digital display dial indicator and the shaft code disc are connected to the detection data processing device through digital signal output. The digital display dial indicator is used for detecting the change of the radial dimension, the angle change is recorded through the shaft code disc, and the change is compared with the change of the taper dimension designed in a standard mode, so that the coaxiality condition of the currently measured drill rod joint outer taper thread, the change condition of the taper dimension and other parameters can be obtained quickly, and the operation is convenient and quick.
Description
Technical Field
The utility model relates to an external screw thread axiality detecting system especially carries out the system that the axiality detected to tool joint's outer awl screw.
Background
The drill rod joint is mainly applied to the field of oil drilling, and the main body is in a bullet shape and is connected with a drill rod in use. The drill rod joint is divided into a male joint and a female joint which are connected by adopting tapered threads, and the shape of the threads can be detected only by a gauge in combination with the standards of GB/T4749 petroleum drill rod joint thread gauge and the like at present. However, besides the shape of the thread which needs to be detected and meets certain specification requirements, the coaxiality of the thread relative to the inner hole needs to be detected so as to ensure that the wall thickness of the thread is uniform and local weak wall surfaces cannot occur to cause leakage of the inner wall.
In order to detect the coaxiality of the external taper thread, at present, a three-coordinate instrument is generally adopted to draw the shape of the thread through dense point measurement and then calculate and estimate the coaxiality. Although the detection method has high precision, the detection method is time-consuming and labor-consuming and cannot realize field detection.
For example, the hollow axle inner hole coaxiality detection device disclosed in chinese patent publication No. CN105222690B is fixed in an inner hole through an expansion sleeve, and then the coaxiality of an outer wall is detected by rotation of a dial indicator, so that the requirement of on-site rapid detection is met, but due to technical limitation, the detection of the coaxiality of a complex surface such as a tapered thread cannot be met.
Therefore, technical innovation is needed to be made, and the on-site rapid detection of the coaxiality of the external taper threads is realized, so that the detection cost is reduced, and the product quality is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tool joint outer cone thread axiality detecting system realizes having improved detection efficiency to the on-the-spot short-term test of tool joint outer cone thread.
The utility model discloses a drill rod joint external taper thread coaxiality detection system, which is characterized by comprising a detection mechanism and a detection data processing device;
the detection mechanism comprises a digital display dial indicator, a coded disc for a shaft, a tensioning mechanism and a rotary gauge stand arranged on the tensioning mechanism;
a shaft coded disc is arranged on the rotary meter seat, and a digital display dial indicator is fixed at the bottom of the rotary meter seat; and the digital display dial indicator and the shaft code disc are connected to the detection data processing device through digital signal output.
As a further improvement of the utility model, the tensioning mechanism comprises a tensioning disc, a guide sleeve, a supporting head, a supporting column, a tensioning screw, a tensioning cone head and a tensioning nut;
the tensioning disc is circular, 3 guide sleeves are uniformly distributed on the bottom surface of the tensioning disc, a through hole is formed in each guide sleeve, a supporting head is arranged in each guide sleeve, the cross section of the extending end of each supporting head is a pointed top, and the inner side of each supporting head is an inner conical cambered surface; a through hole is formed in the center of the tensioning disc, and a hollow supporting column is arranged at the upper part of the tensioning disc; the support column is internally provided with a tensioning screw, one end of the tensioning screw is provided with a conical tensioning conical head, the conical cambered surface of the tensioning conical head is matched with the inner conical cambered surface of the support head, the other end of the tensioning screw is provided with an external thread, the external thread exceeds the top of the support column, and a tensioning nut is screwed on the external thread.
As a further improvement of the utility model, the rotary gauge stand comprises a seat cover, a guide rod shaft, a rotary seat, a rotary rod and a support suspender;
the seat sleeve is sleeved on the outer side of the top of the tensioning disc, and a guide rod shaft is fixed on the top of the seat sleeve; a rotary seat is sleeved outside the guide rod shaft, a coded disc for a shaft is connected to the top of the rotary seat, a rotating disc on the inner side of the coded disc for the shaft is sleeved on the guide rod shaft, and an outer side detection unit of the coded disc for the shaft is connected to the end face of the rotary seat; a rotary rod is connected to the outer side of the rotary seat, a supporting suspension rod is arranged on the rotary rod, a mounting hole is formed in the top end of the supporting suspension rod and sleeved on the rotary rod, a fastening screw is arranged on the wall of the mounting hole of the supporting suspension rod, and the supporting suspension rod can be fixed on the rotary rod through the fastening screw; the bottom end of the support hanging rod is provided with a mounting hole of the digital display dial indicator, the digital display dial indicator can be fixed on the support hanging rod through another fastening screw, and the pointer of the digital display dial indicator faces the inner side.
Preferably, a linear bearing is arranged in the rotating base and sleeved on the outer side of the guide rod shaft.
Furthermore, a spring is sleeved on the outer side of the guide rod shaft, and the top end of the spring abuts against the bottom of the rotating seat to provide elastic support for the rotating seat.
Furthermore, rotary rods are arranged on two sides of the rotary seat, an adjustable suspension rod is sleeved on the rotary rod on the other side, a clamping groove with an adjustable height position is formed in a top plate of the adjustable suspension rod and sleeved on the rotary rod, and the two sides of the adjustable suspension rod are fixed on the rotary rod through fastening screws; and a digital display dial indicator mounting hole is formed in the bottom of the adjustable hanger rod, and another digital display dial indicator is fixed on the bottom of the adjustable hanger rod.
Preferably, the shaft code wheel is an absolute code wheel.
The utility model discloses tool joint outer cone thread axiality detecting system, when using, fix the shaft hole tight mechanism that rises in the hole of waiting to detect tool joint first, because adopted toper tight head that rises, 3 props the head and stretches out equidistance simultaneously, push up in the hole, make the support column be located the center of hole; sleeving the seat sleeve on the support column to enable the guide rod shaft to be located in the center of the inner hole of the drill rod joint to be detected; the rotating base capable of rotating along the guide rod shaft, the rotating rod and the support hanging rod are mounted on the guide rod shaft, the digital display dial indicator is finally fixed on the support hanging rod, the pointer of the digital display dial indicator is adjusted to be located on the pitch diameter of the conical thread, the pointer of the digital display dial indicator can move in the radial direction and the axial direction along the pitch diameter of the conical thread through the rotation of the support hanging rod, the axial coded disc mounted on the rotating base is combined, the actual radial size fluctuation of the conical thread can be measured faithfully, the design change value is subtracted, and the coaxiality jump value can be obtained.
The utility model discloses tool joint outer taper thread axiality detecting system compares with prior art and has following advantage:
1. the structure is simple, the manufacture is easy, and the cost is low;
2. the rapid detection can be carried out on site, and the operation is convenient and rapid;
3. the combination of the absolute code disc can record the angle position of the coaxiality difference, so that the reworking and the repair of the drill rod joint are facilitated, and the repair and the adjustment are more convenient.
Drawings
FIG. 1 is a schematic view of the system for detecting coaxiality of external taper threads of a drill pipe joint according to the present invention;
FIG. 2 is a general schematic view of the detection mechanism of the drill rod joint external taper thread coaxiality detection system of the present invention;
FIG. 3 is a whole cross-sectional view of the detection mechanism of the drill rod joint external taper thread coaxiality detection system of the present invention;
fig. 4 is a schematic structural view of the tensioning mechanism of the present invention;
fig. 5 is a cross-sectional view of the tension mechanism of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the system for detecting coaxiality of external taper threads of a drill pipe joint according to the present invention; the utility model discloses tool joint outer taper thread axiality detecting system is including installing the detection mechanism on tool joint 3, and detect data processing apparatus 2, it can be the industrial computer to detect data processing apparatus 2, also can be the hand-held type processing apparatus who takes data monitoring, processing system (with singlechip or ARM as the core, have sensor signal processing, data record, analysis function).
The specific structure of the detection mechanism, as shown in fig. 2 and 3, comprises a digital display dial indicator 101 and a shaft code disc 102; the shaft hole tensioning mechanism 11; and the rotating gauge stand arranged on the tensioning mechanism 11 comprises a seat sleeve 121, a guide rod shaft 122, a spring 123, a rotating seat 124, a rotating rod 125 and a supporting suspension rod 126.
As shown in fig. 4 and 5, the shaft hole tensioning mechanism 11 further includes a tensioning disc 111, a guide sleeve 112, a supporting head 113, a supporting column 114, a tensioning screw 115, a tensioning cone 116, and a tensioning nut 117.
The tensioning disc 111 is circular, 3 guide sleeves 112 are uniformly distributed on the bottom surface of the tensioning disc, a through hole is formed in each guide sleeve 112, a supporting head 113 is arranged in each guide sleeve 112, the cross section of the extending end of each supporting head 113 is a pointed top and is used for being in contact with the wall surface of an inner hole, and the inner side of each supporting head 113 is an inner cone arc surface; a through hole is formed in the center of the tensioning disc 111, and a hollow supporting column 114 is arranged at the upper part of the tensioning disc; the tension device is characterized in that a tension screw 115 is arranged in the support column 114, a conical tension cone 116 is arranged at one end of the tension screw 115, the conical arc surface of the tension cone 116 is matched with the inner conical arc surface of the support head 113, an external thread is arranged at the other end of the tension screw 115, exceeds the top of the support column 114, and a tension nut 117 is screwed. When the tool is used, the tensioning disc 111 is placed in the inner hole on the side of the external thread of the tool joint 3 to be detected, the tensioning nut 117 is screwed, the tensioning cone 116 is driven to ascend, the supporting head 113 is further pushed to expand and abut against the inner wall of the inner hole, and the supporting column 114 is fixed at the center of the inner hole of the tool joint 3 to be detected along with the locking of the tensioning nut 117.
A rotating gauge stand is sleeved outside the supporting column 114, that is, a seat sleeve 121 with the same outer diameter as that of the supporting column 114 is sleeved outside the supporting column 114, and a guide rod shaft 122 is fixed at the top of the seat sleeve 121 and is fixed at the center of the inner hole of the tool joint 3 to be tested along with the seat sleeve 121. A rotating base 124 is sleeved outside the guide rod shaft 122, preferably, a linear bearing is arranged in the rotating base 124, and the linear bearing is sleeved outside the guide rod shaft 122 to ensure that the rotating base 124 can move up and down along the vertical direction of the guide rod shaft 122 without a radial gap. The top of the rotary base 124 is connected with a shaft code wheel 102, the shaft code wheel 102 can be a photoelectric code wheel, an inner rotary disc of the shaft code wheel 102 is sleeved on the guide rod shaft 122, an outer detection unit of the inner rotary disc is connected to the end surface of the rotary base 124, and the rotary base 123 can rotate around the guide rod shaft 122 to drive the detection unit of the shaft code wheel 102 to rotate and output an angle value as an electric signal. The outside of roating seat 124 is connected with rotary rod 125, be equipped with support jib 126 on the rotary rod 125, the top of support jib 126 is equipped with the mounting hole, and the cover is established on the rotary rod 125, support jib 126 can be followed the rotary rod 125 translation, be equipped with fastening screw on the installation pore wall of support jib 126, through fastening screw can with support jib 126 is fixed on the rotary rod 125. The bottom end of the support suspender 126 is provided with an installation hole of the digital display dial indicator 101, the digital display dial indicator 101 can be fixed on the support suspender 126 through another fastening screw, and the pointer of the digital display dial indicator 101 faces the inner side.
When the digital display dial indicator 101 is used, the digital display dial indicator 101 is fixed on the supporting hanger rod 126, then the position of the supporting hanger rod 126 on the rotating rod 125 is adjusted, the pointer of the digital display dial indicator 101 is made to contact with the middle diameter of the external thread of the drill rod joint 3 to be detected, and the pointer of the digital display dial indicator 101 can rotate along the external thread and move along the vertical direction by rotating the rotating rod 125.
Further, a spring 123 is sleeved outside the guide rod shaft 122, and the top end of the spring 123 abuts against the bottom of the rotating base 124 to provide elastic support for the rotating base 124.
Furthermore, both sides of the rotating base 124 are provided with rotating rods 125, the rotating rod 125 on the other side is sleeved with an adjustable suspender 127, a top plate of the adjustable suspender 127 is provided with a clamping groove with adjustable height position, the clamping groove is sleeved on the rotating rod 125, and both sides are fixed on the rotating rod 125 through fastening screws; the bottom of the adjustable suspender 127 is also provided with a mounting hole of the digital display dial indicator 101, and the other digital display dial indicator 101 is fixed on the bottom of the adjustable suspender. When the digital display dial indicator is used, the pointer of the digital display dial indicator 101 on one side of the support suspender 126 is arranged in the external thread of the drill rod joint 3 to be detected, and then the height position of the adjustable suspender 127 is adjusted, so that the pointer of the other digital display dial indicator 101 is enabled to be pressed against the external thread of the drill rod joint 3 to be detected, and the pointers of the digital display dial indicators 101 on the two sides are half a circle of thread. Through setting up 2 digital display percentage table 101, can the symmetry top wait to detect in the external screw thread of tool joint 3, both sides atress simultaneously during the detection, it is more even.
The digital display dial indicator 101 is a dial indicator capable of outputting a signal, and inputs a measured size signal into the detection data processing device 2, and simultaneously inputs a rotation signal of the shaft code wheel 102 into the detection data processing device 2; the detection data processing device 2 records and processes the dimension signal measured by the digital display dial indicator 101 and the angle signal of the shaft code wheel 102 at the same time.
According to the standard size parameters of the external thread of the drill rod joint 3 to be detected, the change size of the external diameter of the thread per circle is e, and the change amount of the corresponding rotation angle is e/2 pi (namely the change rate); and comparing the size and the angle change value recorded by the detection data processing device 2 with standard values, thereby calculating the actual coaxiality and the taper size of the external thread of the drill rod joint 3 to be detected. Preferably, the shaft code wheel 102 is an absolute code wheel, so that the shaft offset in a specific angle range can be recorded, and the unqualified pipe joint 3 to be detected can be repaired and adjusted.
Through the utility model discloses a tool joint outer cone thread axiality detecting system can be right treat that the axiality and the tapering of the outer cone thread of treating tool joint 3 carry out quick witnessed inspections and measure, improved and detected the convenience, and can conveniently take notes specific unqualified condition, to unqualified treat that tool joint 3 carries out timely repair, adjustment, satisfied the user demand.
In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.
In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (7)
1. The coaxiality detection system for the outer conical threads of the drill rod joint is characterized by comprising a detection mechanism and a detection data processing device;
the detection mechanism comprises a digital display dial indicator, a coded disc for a shaft, a tensioning mechanism and a rotary gauge stand arranged on the tensioning mechanism;
a shaft coded disc is arranged on the rotary meter seat, and a digital display dial indicator is fixed at the bottom of the rotary meter seat; and the digital display dial indicator and the shaft code disc are connected to the detection data processing device through digital signal output.
2. The system for detecting the coaxiality of the external taper thread of the drill pipe joint as recited in claim 1, wherein the tensioning mechanism comprises a tensioning disc, a guide sleeve, a supporting head, a supporting column, a tensioning screw, a tensioning cone head and a tensioning nut;
the tensioning disc is circular, 3 guide sleeves are uniformly distributed on the bottom surface of the tensioning disc, a through hole is formed in each guide sleeve, a supporting head is arranged in each guide sleeve, the cross section of the extending end of each supporting head is a pointed top, and the inner side of each supporting head is an inner conical cambered surface; a through hole is formed in the center of the tensioning disc, and a hollow supporting column is arranged at the upper part of the tensioning disc; the support column is internally provided with a tensioning screw, one end of the tensioning screw is provided with a conical tensioning conical head, the conical cambered surface of the tensioning conical head is matched with the inner conical cambered surface of the support head, the other end of the tensioning screw is provided with an external thread, the external thread exceeds the top of the support column, and a tensioning nut is screwed on the external thread.
3. The tool joint external taper thread coaxiality detection system according to claim 2, wherein the rotary gauge stand comprises a seat sleeve, a guide rod shaft, a rotary seat, a rotary rod, a support boom;
the seat sleeve is sleeved on the outer side of the top of the tensioning disc, and a guide rod shaft is fixed on the top of the seat sleeve; a rotary seat is sleeved outside the guide rod shaft, a coded disc for a shaft is connected to the top of the rotary seat, a rotating disc on the inner side of the coded disc for the shaft is sleeved on the guide rod shaft, and an outer side detection unit of the coded disc for the shaft is connected to the end face of the rotary seat; a rotary rod is connected to the outer side of the rotary seat, a supporting suspension rod is arranged on the rotary rod, a mounting hole is formed in the top end of the supporting suspension rod and sleeved on the rotary rod, a fastening screw is arranged on the wall of the mounting hole of the supporting suspension rod, and the supporting suspension rod can be fixed on the rotary rod through the fastening screw; the bottom end of the support hanging rod is provided with a mounting hole of the digital display dial indicator, the digital display dial indicator can be fixed on the support hanging rod through another fastening screw, and the pointer of the digital display dial indicator faces the inner side.
4. The system for detecting the coaxiality of the external tapered thread of the drill pipe joint as recited in claim 3, wherein a linear bearing is arranged in the rotating seat and sleeved outside the guide rod shaft.
5. The drill pipe joint outer cone thread coaxiality detection system according to claim 3, wherein a spring is sleeved on the outer side of the guide rod shaft, and the top end of the spring abuts against the bottom of the rotary seat.
6. The system for detecting the coaxiality of the external taper thread of the drill rod joint as recited in claim 3, wherein rotary rods are arranged on two sides of the rotary seat, an adjustable suspension rod is sleeved on the rotary rod on the other side, a clamping groove with an adjustable height position is formed in a top plate of the adjustable suspension rod, the clamping groove is sleeved on the rotary rod, and two sides of the clamping groove are fixed on the rotary rod through fastening screws; and a digital display dial indicator mounting hole is formed in the bottom of the adjustable hanger rod, and another digital display dial indicator is fixed on the bottom of the adjustable hanger rod.
7. The system for detecting the coaxiality of the outer tapered threads of the tool joint as recited in claim 3, wherein the code wheel for the shaft is an absolute code wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045414.0U CN209840946U (en) | 2019-07-05 | 2019-07-05 | Drill rod joint outer cone thread coaxiality detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045414.0U CN209840946U (en) | 2019-07-05 | 2019-07-05 | Drill rod joint outer cone thread coaxiality detection system |
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| Publication Number | Publication Date |
|---|---|
| CN209840946U true CN209840946U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921045414.0U Active CN209840946U (en) | 2019-07-05 | 2019-07-05 | Drill rod joint outer cone thread coaxiality detection system |
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| Country | Link |
|---|---|
| CN (1) | CN209840946U (en) |
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2019
- 2019-07-05 CN CN201921045414.0U patent/CN209840946U/en active Active
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