Local temperature measurement and control device for drill rod
By designing a local temperature measurement and control device for drill pipes and adopting a local wrapping heating method, the problem of low efficiency in drill pipe heating tests was solved, and precise temperature control and efficient testing of specific locations on the drill pipe were achieved.
Patent Information
- Application Number
- CN202520342632.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing technologies for drill pipe heating tests cannot simulate underground temperature differences, resulting in excessively long heating times, low efficiency, and the inability to conduct differentiated temperature tests on different drill pipes simultaneously.
Design a drill pipe local temperature measurement and control device, including an outer shell, an inner fixing frame, an electric heating component and a temperature sensor. Through local wrapping heating, combined with a locking mechanism and a limiting mechanism, it can achieve precise heating and temperature control of a specific position on the drill pipe.
It enables efficient testing of drill pipe temperature, allowing different temperatures to be set in a short time, thus solving the problem of low testing efficiency in existing technologies.
Smart Images
Figure CN223661814U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of oil drill pipe temperature test, especially relates to a drill pipe local temperature measurement and control device. BACKGROUND
[0002] With the growing of oil exploitation industry and the complication of oil exploitation environment, the high temperature resistance and durability of the while-drilling measurement instrument are paid more and more attention, especially the high standard requirement of local high temperature resistance. The while-drilling measurement instrument increases 2.1℃~4.1℃ per 100 meters in the underground temperature-increasing layer of the drill bit, and the underground high temperature will make the drilling equipment performance decrease and the electronic components fail in the drilling work below 3000 meters. Whether the sensor and electronic equipment can work normally in the underground is related to the drilling data accuracy and drilling benefit, and the quality and performance are directly related to the drilling work efficiency, safety and cost benefit. Therefore, in the oil drill pipe development industry, the drill pipe ground test process is particularly important.
[0003] However, there is no heating equipment suitable for the drill pipe on the market, and the current heating test method is to use a large heating box to heat dozens of drill pipes at the same time. Because the length of the drill pipe in actual work is several kilometers, the temperature of the drill pipe at different depths works at the same time is different, and this method cannot effectively simulate the underground situation, and the data obtained by heating is not accurate enough. Moreover, the electronic circuit board is distributed in the form of scattered points in the drill pipe, and is concentrated in a small part of the drill pipe area. In the overall heating, a large number of irrelevant areas need to be heated and cooled, the overall test efficiency is low, and the product test and development progress is slow. Therefore, it is necessary to design a test method and device capable of local temperature control for optimizing the drill pipe production design process. UTILITY MODEL CONTENT
[0004] The technical problem to be solved by the utility model is to provide a drill pipe local temperature measurement and control device, which solves the problems of long heating time, low heating efficiency and inability to simultaneously test different drill pipes in the current drill pipe heating test.
[0005] The technical scheme for solving the above technical problem of the utility model is as follows: a drill pipe local temperature measurement and control device, comprising an outer shell, a cylindrical inner fixing frame is arranged on the inner side of the outer shell, a heat insulation layer is fixedly arranged between the outer shell and the inner fixing frame, a cylindrical electric heating assembly is arranged on the inner side of the inner fixing frame, a heating channel for accommodating the drill pipe is arranged on the inner side of the electric heating assembly, a temperature sensor is arranged between the electric heating assembly and the inner fixing frame, a heating plug electrically connected with the electric heating assembly is arranged on the outer shell, a data transmission plug electrically connected with the temperature sensor is arranged on the outer shell, and end limit mechanisms for limiting the end portions of the inner fixing frame and the electric heating assembly are arranged on the inner sides of the two ends of the outer shell.
[0006] The utility model discloses beneficial effect is: through the local wrapping of drill pipe heating, direct to the local heating of the specific position of drill pipe, through a plurality of this device, can set different temperature at the same time, thereby can complete heating test in short time, solved the current drill pipe temperature test efficiency lower problem.
[0007] On the basis of the above technical scheme, the utility model still can make following improvement.
[0008] Further, the outer shell body is provided with a shell opening extending to both ends thereof, the inner fixing frame is a plate-shaped structure that can be formed into a cylindrical shape, two opposite sides of the inner fixing frame are fixedly connected with two inner walls of the shell opening through mounting racks, the heat insulation layer is heat insulation cotton, the heat insulation cotton is arranged between the inner fixing frame and the outer shell body, the electric heating assembly is provided with a heating opening, the position of the heating opening corresponds to the position of the shell opening, and the two outer walls of the shell opening are fixedly provided with mutually matched lock catch mechanisms.
[0009] The beneficial effect of the above further scheme is that by arranging the shell opening, the outer shell body can be opened at the shell opening, the drill pipe enters from the shell opening, then the shell opening is closed, the lock catch mechanisms are locked, the local part of the drill pipe can be wrapped, and the scheme is applicable to the case that the drill pipe cannot be inserted from the end of the outer shell body.
[0010] Further, handles are fixedly arranged on the two outer walls of the shell opening.
[0011] The beneficial effect of the above further scheme is that handles are fixedly arranged on the two outer walls of the shell opening, so that the shell opening can be conveniently opened and closed manually, and the entire device can be conveniently lifted and moved.
[0012] Further, the electric heating assembly comprises heating wires and a plurality of hollow-structured alumina ceramics, the heating wires are connected in series with the plurality of alumina ceramics into a caterpillar structure, the caterpillar structure is connected with the inner wall of the inner fixing frame, and the temperature sensor is arranged between the caterpillar structure and the inner fixing frame.
[0013] The beneficial effect of the above further scheme is that the alumina ceramics connected in series in the caterpillar structure can be conveniently unfolded and enclosed into a cylindrical shape, so that the local wrapping of the drill pipe is facilitated.
[0014] Further, the end limiting mechanism comprises a plurality of limiting blocks and a limiting heat insulation strip, the plurality of limiting blocks are arranged on the inner side of the outer shell body and are fixedly connected with the end of the outer shell body in a uniform interval, two adjacent limiting blocks are arranged in an interval, the limiting heat insulation strip is arranged between the limiting block and the end of the inner fixing frame and the electric heating assembly, and the two ends of the limiting heat insulation strip are arranged on the inner walls on both sides of the shell opening.
[0015] The beneficial effect of the above further scheme is that: the plurality of limiting blocks arranged in an interval can be expanded with the expansion of the outer shell body, when the shell opening is closed, the plurality of limiting blocks form a ring structure, which can limit the end of the inner fixing frame and the electric heating assembly during the expansion and closing of the outer shell body.
[0016] Further, the inner fixing frame is a steel plate uniformly provided with a plurality of through holes.
[0017] The beneficial effect of the above further scheme is that: the inner fixing frame is a steel plate provided with through holes, which can make the inner fixing frame close to a cylindrical shape, and reduce the weight on the basis of ensuring the strength.
[0018] Further, the outer shell body comprises a first half-cylindrical shell and a second half-cylindrical shell, one side wall of the first half-cylindrical shell is hingedly connected with one side wall of the second half-cylindrical shell, the other side wall of the first half-cylindrical shell and the other side wall of the second half-cylindrical shell are connected through a lock mechanism, the first half-cylindrical shell and the second half-cylindrical shell form a cylindrical structure; the inner fixing frame comprises a first half-cylindrical fixing frame and a second half-cylindrical fixing frame, the two side walls of the first half-cylindrical fixing frame are fixedly connected with the two side walls of the first half-cylindrical shell through a first connecting frame, the two side walls of the second half-cylindrical fixing frame are fixedly connected with the two side walls of the second half-cylindrical shell through a second connecting frame, the heat insulation layer is arranged between the first half-cylindrical shell and the first half-cylindrical fixing frame, and the heat insulation layer is arranged between the second half-cylindrical shell and the second half-cylindrical fixing frame; the electric heating assembly is arranged on the inner side of the first half-cylindrical fixing frame and the second half-cylindrical fixing frame in series, and the end limiting mechanism is arranged on the inner side of the two ends of the first half-cylindrical shell and the second half-cylindrical shell.
[0019] The beneficial effect of the above further scheme is that: the above structure sets the entire device into two half-cylindrical structures that can be closed to a cylindrical shape, which is convenient for expansion and closing, and further facilitates wrapping the local part of the drill rod from the side of the drill rod.
[0020] Further, the lock mechanism is a door latch type quick clamp.
[0021] The beneficial effect of the further scheme is that the locking mechanism adopts a door latch type fast clamping, which is convenient to lock and open and can ensure the strength after locking.
[0022] Further, the end limiting mechanism comprises a fixing ring and a limiting heat insulation cotton, the fixing ring is coaxial with the outer shell body, and the fixing ring is fixedly connected with the end of the outer shell body, and the limiting heat insulation cotton is arranged between the fixing ring and the end of the inner fixing frame and the electric heating assembly.
[0023] The beneficial effect of the further scheme is that the limiting heat insulation cotton is arranged in a ring shape on the inner side of the end of the outer shell body, and then is fixedly connected with the outer shell body through the fixing ring, so that the loss of heat at the end during heating is reduced.
[0024] Further, a limiting sleeve is fixedly arranged on the outer wall of the fixing ring, the limiting sleeve is coaxial with the fixing ring, one end of the limiting sleeve is fixedly connected with the outer wall of the fixing ring, a plurality of threaded holes are uniformly arranged on the limiting sleeve in the circumferential direction, and a limiting bolt is screw-connected in the threaded hole.
[0025] The beneficial effect of the further scheme is that after the drill rod is inserted into the heating channel, the whole device can be fixed at the temperature measuring position of the drill rod by tightening the limiting bolt. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is a perspective view of the utility model embodiment one;
[0027] Figure 2 It is a top view of the utility model embodiment one;
[0028] Figure 3 It is an axial sectional view of the utility model embodiment one;
[0029] Figure 4 It is a front view of the utility model embodiment two;
[0030] Figure 5 It is a top view of the utility model embodiment two;
[0031] Figure 6 It is a top view of the utility model embodiment three;
[0032] Figure 7 It is a radial sectional view of the utility model embodiment three;
[0033] In the drawings, the components represented by the numbers are listed as follows:
[0034] 1, outer shell; 2, inner fixed frame; 3, heat insulation layer; 4, electric heating assembly; 5, heating channel; 6, temperature sensor; 7, heating plug; 8, data transmission plug; 9, shell opening; 10, mounting frame; 11, heating opening; 12, locking mechanism; 13, handle; 14, alumina ceramic; 15, limiting block; 16, limiting heat insulation strip; 17, first half-cylinder shell; 18, second half-cylinder shell; 19, first half-cylinder fixed frame; 20, second half-cylinder fixed frame; 21, first connecting frame; 22, second connecting frame; 23, fixed ring; 24, limiting heat insulation cotton; 25, limiting sleeve; 26, threaded hole; 27, limiting bolt. DETAILED DESCRIPTION
[0035] The principles and features of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and are not intended to limit the scope of the present application.
[0036] Example one
[0037] As shown in Figure 1 , Figure 2 , Figure 3 , the present embodiment comprises an outer shell 1, the inner side of the outer shell 1 is provided with a cylindrical inner fixed frame 2, the outer shell 1 and the inner fixed frame 2 are filled and fixed with a heat insulation layer 3, the inner side of the inner fixed frame 2 is provided with a cylindrical electric heating assembly 4, the inner side of the electric heating assembly 4 is provided with a heating channel 5 for accommodating a drill rod, the electric heating assembly 4 and the inner fixed frame 2 are provided with a temperature sensor 6, the outer shell 1 is provided with a heating plug 7 electrically connected with the electric heating assembly 4, the outer shell 1 is provided with a data transmission plug 8 electrically connected with the temperature sensor 6, the inner side of both ends of the outer shell 1 is provided with an end limiting mechanism for limiting the end of the inner fixed frame 2 and the electric heating assembly 4.
[0038] By locally wrapping and heating the drill rod, the drill rod is directly heated at a specific position, and by using multiple devices, different temperatures can be set at the same time, so that the heating test can be completed in a short time, solving the problem of low efficiency of current drill rod temperature test.
[0039] In the embodiment, the outer shell 1 is provided with a shell opening 9 extending to both ends thereof, the inner fixing frame 2 is a plate-shaped structure which can be coiled into a cylindrical shape, two opposite sides of the inner fixing frame 2 are fixedly connected with two inner walls of the shell opening 9 through a mounting frame 10, the heat insulation layer 3 is heat insulation cotton which is arranged between the inner fixing frame 2 and the outer shell 1, the electric heating assembly 4 is provided with a heating opening 11, the heating opening 11 is located corresponding to the position of the shell opening 9, and mutually matched lock catch mechanisms 12 are fixedly arranged on two outer walls of the shell opening 9, when the lock catch mechanisms 12 are locked and connected, the shell opening 9 is closed. By arranging the shell opening 9, the outer shell 1 can be opened at the shell opening 9, the drill rod enters from the shell opening 9, then the shell opening 9 is closed, the lock catch mechanisms 12 are locked, and the local part of the drill rod can be wrapped, which can be applied to the case that the drill rod cannot be inserted from the end of the outer shell 1.
[0040] Preferably, handles 13 are fixedly arranged on the two outer walls of the shell opening 9, which facilitates manual opening and closing of the shell opening 9 and facilitates lifting and moving of the whole device.
[0041] In the embodiment, the electric heating assembly 4 comprises heating wires and a plurality of hollow structure alumina ceramics 14, the heating wires are connected in series with the plurality of alumina ceramics 14 into a caterpillar structure, the caterpillar structure is connected with the inner wall of the inner fixing frame 2, and the temperature sensor 6 is arranged between the caterpillar structure and the inner fixing frame 2. The alumina ceramics 14 connected in series in the caterpillar structure can be conveniently unfolded and surrounded into a cylindrical shape, thereby realizing convenient local wrapping of the drill rod.
[0042] In the embodiment, the end limiting mechanism comprises a plurality of limiting blocks 15 and limiting heat insulation strips 16, the plurality of limiting blocks 15 are arranged on the inner side of the outer shell 1 and are fixedly connected with the end of the outer shell 1 and are uniformly and spacedly arranged, two adjacent limiting blocks 15 are spacedly arranged, the limiting heat insulation strips 16 are arranged between the limiting blocks 15 and the end of the inner fixing frame 2 and the electric heating assembly 4, and two ends of the limiting heat insulation strips 16 are arranged on the inner walls on both sides of the shell opening 9. The plurality of spacedly arranged limiting blocks 15 can be unfolded along with unfolding of the outer shell 1, when the shell opening 9 is closed, the plurality of limiting blocks 15 form a ring-shaped structure, and the end of the inner fixing frame 2 and the electric heating assembly 4 can be limited during unfolding and surrounding of the outer shell 1.
[0043] Preferably, the inner fixing frame 2 is a steel plate which is uniformly provided with a plurality of through holes. The inner fixing frame 2 adopts the steel plate provided with the through holes, which can make the inner fixing frame 2 be surrounded into a cylindrical shape and reduce the weight on the basis of ensuring the strength.
[0044] The locking mechanism 12 is a door latch type quick clamp, which is convenient to lock and open and can ensure the strength after locking.
[0045] Embodiment two
[0046] As shown in Figure 4 , Figure 5 , the embodiment includes an outer shell 1, the inner side of the outer shell 1 is provided with a cylindrical inner fixing frame 2, a heat insulation layer 3 is fixedly arranged between the outer shell 1 and the inner fixing frame 2, the inner side of the inner fixing frame 2 is provided with a cylindrical electric heating assembly 4, a heating channel 5 for accommodating a drill rod is arranged in the electric heating assembly 4, a temperature sensor 6 is arranged between the electric heating assembly 4 and the inner fixing frame 2, the outer shell 1 is provided with a heating plug 7 electrically connected with the electric heating assembly 4, the outer shell 1 is provided with a data transmission plug 8 electrically connected with the temperature sensor 6, and the inner side of both ends of the outer shell 1 is provided with an end limiting mechanism for limiting the end of the inner fixing frame 2 and the electric heating assembly 4.
[0047] By locally wrapping and heating the drill rod, the drill rod is directly locally heated at a specific position, a plurality of the device can set different temperatures at the same time, so that the heating test can be completed in a short time, and the problem of low efficiency of the current drill rod temperature test is solved.
[0048] In the embodiment, the end limiting mechanism includes a fixed ring 23 and a limiting heat insulation cotton 24, the fixed ring 23 is coaxially arranged with the outer shell 1, and the fixed ring 23 is fixedly connected with the end of the outer shell 1, the limiting heat insulation cotton 24 is arranged between the fixed ring 23 and the end of the inner fixing frame 2 and the electric heating assembly 4, the limiting heat insulation cotton 24 is arranged in a ring shape on the inner side of the end of the outer shell 1, and then the fixed ring 23 is fixedly connected with the outer shell 1, so as to reduce the loss of heat at the end during heating.
[0049] Further, a limiting sleeve 25 is fixedly arranged on the outer wall of the fixed ring 23, the limiting sleeve 25 is coaxially arranged with the fixed ring 23, one end of the limiting sleeve 25 is fixedly connected with the outer wall of the fixed ring, a plurality of threaded holes 26 are uniformly arranged on the limiting sleeve 25 along the circumferential direction, and a limiting bolt 27 is screwedly connected in the threaded hole 26, the limiting bolt 27 on the limiting sleeve 25 can limit and fix the device on the drill rod to be tested after the drill rod is inserted into the heating channel 5 by tightening the limiting bolt 27.
[0050] Preferably, the inner fixing frame 2 is a steel plate with multiple through holes. The inner fixing frame 2 is a steel plate with through holes, which can make the inner fixing frame 2 into a cylindrical shape, and reduce the weight while ensuring strength.
[0051] The locking mechanism 12 is a door latch type quick clamp. The locking mechanism 12 is a door latch type quick clamp, which is convenient to lock and open, and can ensure the strength after locking.
[0052] Embodiment three
[0053] As shown in Figure 6 , Figure 7 The embodiment includes an outer shell 1, the inner side of the outer shell 1 is provided with a cylindrical inner fixing frame 2, the outer shell 1 and the inner fixing frame 2 are filled and fixed with a heat insulation layer 3, the inner side of the inner fixing frame 2 is provided with a cylindrical arrangement of an electric heating assembly 4, the inner side of the electric heating assembly 4 is provided with a heating channel 5 for accommodating a drill rod, the electric heating assembly 4 and the inner fixing frame 2 are provided with a temperature sensor 6, the outer shell 1 is provided with a heating plug 7 electrically connected with the electric heating assembly 4, the outer shell 1 is provided with a data transmission plug 8 electrically connected with the temperature sensor 6, and the inner side of both ends of the outer shell 1 is provided with an end limiting mechanism for limiting the end of the inner fixing frame 2 and the electric heating assembly 4.
[0054] By local wrapping and heating the drill rod, the drill rod is directly heated at a specific position, and multiple devices can set different temperatures at the same time, so that the heating test can be completed in a short time, solving the problem of low efficiency of current drill rod temperature test.
[0055] In the embodiment, the outer shell 1 comprises a first half-cylinder shell 17 and a second half-cylinder shell 18, one side wall of the first half-cylinder shell 17 is hinged with one side wall of the second half-cylinder shell 18, the other side wall of the first half-cylinder shell 17 and the other side wall of the second half-cylinder shell 18 are connected through the lock catch mechanism 12, and the first half-cylinder shell 17 and the second half-cylinder shell 18 form a cylindrical structure; the inner fixing frame 2 comprises a first half-cylinder fixing frame 19 and a second half-cylinder fixing frame 20, two side walls of the first half-cylinder fixing frame 19 are fixedly connected with two side walls of the first half-cylinder shell 17 through a first connecting frame 21, two side walls of the second half-cylinder fixing frame 20 are fixedly connected with two side walls of the second half-cylinder shell 18 through a second connecting frame 22, the first half-cylinder shell 17 is provided with the heat insulation layer 3 between the first half-cylinder shell 17 and the first half-cylinder fixing frame 19, and the second half-cylinder shell 18 is provided with the heat insulation layer 3 between the second half-cylinder shell 18 and the second half-cylinder fixing frame 20; the first half-cylinder fixing frame 19 and the second half-cylinder fixing frame 20 are provided with the electric heating assembly 4 connected in series with each other in the inside, and the first half-cylinder shell 17 and the second half-cylinder shell 18 are provided with the end limiting mechanism in the inside at two ends. The above structure sets the whole device into two half-cylinder structures that can be combined into a cylindrical structure, facilitates unfolding and combination, and further facilitates wrapping the local part of the drill rod from the side of the drill rod.
[0056] Preferably, the inner fixing frame 2 is a steel plate uniformly provided with a plurality of through holes. The inner fixing frame 2 adopts the steel plate provided with the through holes, which can make the inner fixing frame 2 combined into a cylindrical structure, and reduce the weight on the basis of ensuring the strength.
[0057] The lock catch mechanism 12 is a door latch type quick clamp, the lock catch mechanism 12 adopts the door latch type quick clamp, which is convenient to lock and open, and can ensure the strength after locking.
[0058] In the embodiment of the utility model, the heat insulation layer 3 uses heat insulation glass fiber to ensure better heat insulation, the temperature sensor 6 is connected to the control box through the data transmission plug 8, the control box can detect the temperature in the heating ring in real time, can also set the heating temperature and time, and the control box can upload the temperature data to the upper computer, the upper computer displays the real-time temperature / time curve and saves historical data for data analysis, and can also set the temperature and time through the control box and then transmit the data to the control panel through the USB and RS232 interfaces.
[0059] The electric heating assembly 4 adopts nickel-chromium alloy heating wire and alumina ceramic 14, the alumina ceramic 14 uses a hollow structure, and the heating wire is connected in series into a caterpillar type structure through the passage in the ceramic, so that the temperature of the heating wire is evenly radiated to the inside, and the heating temperature in the ring can be kept uniform.
[0060] The control box is composed of a switch protection module, a rectifier module, a control panel and a connector, and is responsible for receiving data of the temperature sensor 6, controlling the power of the heating wire according to the set target temperature, constant temperature according to the set time, and realizing bidirectional interaction with the upper computer and the like. The switch protection module has leakage protection and circuit overload protection, effectively ensuring the safety of personnel and equipment.
[0061] After the commercial power passes through the switch protection module, one way enters the AC-to-DC module of the control panel to power the entire control panel, and the other way passes through the rectifier module to convert the alternating current into direct current voltage through the rectifier circuit first, and the direct current output positive end is connected in series with the heating component and the IGBT tube, and finally returns to the direct current negative end through the IGBT tube. The on-off of the heating component is controlled by controlling the on-off of the IGBT tube, so as to achieve the purpose of controlling the heating component to heat up. PWM pulse frequency modulation is used for control during heating, and the IGBT tube is used as a high-frequency switch to control the on-off of the load circuit. In every 1000 pulse periods, n periods are turned on, so that the heating speed modulation and constant temperature power adjustment can be realized.
[0062] The control box uploads the temperature detected by the temperature sensor 6 to the upper computer, the upper computer sends the set temperature to the control box, and after receiving the temperature setting sent by the upper computer, the control box uses the PID algorithm for regulation and control to realize constant temperature control of the target temperature.
[0063] The upper computer software can save or import historical records, and can draw temperature curves on the screen in real time, and display the average temperature of the sensor and the real-time power consumption. Multiple measurement and control devices can be connected to the same upper computer, and the heating temperature, time and other parameters of each device can be set respectively, and each device can be viewed on the upper computer independently, so that the same tester can perform multiple tests at the same time, and the test efficiency is improved.
[0064] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential direction" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the system or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0065] In the description of the utility model, the meaning of "multiple" is at least two, such as two, three and the like, unless otherwise specifically limited.
[0066] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.
[0067] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Furthermore, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0068] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A local temperature measurement and control device for drill pipe, characterized in that, The device includes an outer shell (1), an inner fixed frame (2) in the shape of a cylinder on the inner side of the outer shell (1), a heat insulation layer (3) filled and fixed between the outer shell (1) and the inner fixed frame (2), an electric heating assembly (4) arranged in a cylindrical shape on the inner side of the inner fixed frame (2), a heating channel (5) for accommodating the drill rod on the inner side of the electric heating assembly (4), a temperature sensor (6) between the electric heating assembly (4) and the inner fixed frame (2), a heating plug (7) electrically connected to the electric heating assembly (4) on the outer shell (1), a data transmission plug (8) electrically connected to the temperature sensor (6) on the outer shell (1), and end limiting mechanisms for limiting the ends of the inner fixed frame (2) and the electric heating assembly (4) on the inner sides of both ends of the outer shell (1).
2. The drill pipe local temperature measurement and control device according to claim 1, characterized in that, The outer shell (1) is provided with shell openings (9) extending to both ends. The inner fixing frame (2) is a plate structure that can be coiled into a cylinder. The two opposite sides of the inner fixing frame (2) are fixedly connected to the two inner walls of the shell opening (9) through the mounting frame (10). The heat insulation layer (3) is heat insulation cotton. The heat insulation cotton is disposed between the inner fixing frame (2) and the outer shell (1). The electric heating assembly (4) is provided with a heating opening (11). The position of the heating opening (11) corresponds to the position of the shell opening (9). The two outer walls of the shell opening (9) are fixedly provided with mutually cooperating locking mechanisms (12). When the locking mechanism (12) is locked, the shell opening (9) is closed.
3. The drill pipe local temperature measurement and control device according to claim 2, characterized in that, Handles (13) are fixedly provided on both outer walls of the shell opening (9).
4. The drill pipe local temperature measurement and control device according to claim 2, characterized in that, The electric heating assembly (4) includes a heating wire and a plurality of hollow alumina ceramics (14). The heating wire connects the plurality of alumina ceramics (14) in series to form a track-like structure. The track-like structure is connected to the inner wall of the inner fixing frame (2). The temperature sensor (6) is located between the track-like structure and the inner fixing frame (2).
5. The drill pipe local temperature measurement and control device according to claim 2, characterized in that, The end limiting mechanism includes multiple limiting blocks (15) and limiting heat insulation strips (16). The multiple limiting blocks (15) are disposed on the inner side of the outer shell (1), and the multiple limiting blocks (15) are evenly spaced and fixedly connected to the end of the outer shell (1). Two adjacent limiting blocks (15) are spaced apart. The limiting heat insulation strips (16) are disposed between the limiting blocks (15) and the ends of the inner fixing frame (2) and the electric heating assembly (4). The two ends of the limiting heat insulation strips (16) are respectively disposed on the inner walls on both sides of the shell opening (9).
6. The drill pipe local temperature measurement and control device according to claim 2, characterized in that, The inner fixing frame (2) is a steel plate with multiple through holes evenly distributed.
7. The drill pipe local temperature measurement and control device according to claim 1, characterized in that, The outer shell (1) includes a first semi-cylindrical shell (17) and a second semi-cylindrical shell (18). One side wall of the first semi-cylindrical shell (17) is hinged to one side wall of the second semi-cylindrical shell (18). The other side wall of the first semi-cylindrical shell (17) and the other side wall of the second semi-cylindrical shell (18) are connected by a locking mechanism (12). The first semi-cylindrical shell (17) and the second semi-cylindrical shell (18) together form a cylindrical structure. The inner fixing frame (2) includes a first semi-cylindrical fixing frame (19) and a second semi-cylindrical fixing frame (20). The two side walls of the first semi-cylindrical fixing frame (19) are connected to the two side walls of the first semi-cylindrical shell (17) by a first connection. The frame (21) is fixedly connected, and the two side walls of the second semi-cylindrical fixing frame (20) are fixedly connected to the two side walls of the second semi-cylindrical outer shell (18) through the second connecting frame (22). The heat insulation layer (3) is provided between the first semi-cylindrical outer shell (17) and the first semi-cylindrical fixing frame (19), and the heat insulation layer (3) is provided between the second semi-cylindrical outer shell (18) and the second semi-cylindrical fixing frame (20). The electric heating components (4) connected in series are provided on the inner sides of the first semi-cylindrical fixing frame (19) and the second semi-cylindrical fixing frame (20). The end limiting mechanism is provided on the inner sides of both ends of the first semi-cylindrical outer shell (17) and the second semi-cylindrical outer shell (18).
8. A drill pipe local temperature measurement and control device according to any one of claims 2 to 7, characterized in that, The locking mechanism (12) is a latch-type quick clamp.
9. A drill pipe local temperature measurement and control device according to claim 1, characterized in that, The end limiting mechanism includes a fixing ring (23) and a limiting heat insulation cotton (24). The fixing ring (23) is coaxially arranged with the outer shell (1) and the fixing ring (23) is fixedly connected to the end of the outer shell (1). The limiting heat insulation cotton (24) is disposed between the fixing ring (23) and the end of the inner fixing frame (2) and the electric heating assembly (4).
10. A drill pipe local temperature measurement and control device according to claim 9, characterized in that, A limiting sleeve (25) is fixedly provided on the outer wall of the fixed ring (23). The limiting sleeve (25) is coaxially arranged with the fixed ring (23). One end of the limiting sleeve (25) is fixedly connected to the outer wall of the fixed ring. A plurality of threaded holes (26) are evenly provided on the limiting sleeve (25) along its circumference. A limiting bolt (27) is threadedly connected to the threaded hole (26).