Device for measuring circumferential temperature of inner wall of port of steel pipe

Abstract

The utility model discloses a device for measuring the circumferential temperature of the inner wall of a steel pipe port, and belongs to the technical field of steel pipe production temperature measuring equipment. The device for measuring the circumferential temperature of the inner wall of the port of the steel pipe comprises a bottom plate, a first bracket, two second brackets, a third bracket, four fourth brackets, two linear bearings, a rotating shaft, a fastening bolt, two temperature measuring rods, four connecting rods, twelve bolts and two rolling bearings, the device can achieve the purpose of alternately measuring the circumferential temperature of the inner wall of the port of the steel pipe at a short distance, and has the characteristics of low manufacturing cost, simplicity in operation and good use effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of temperature measuring equipment for steel pipe production, and specifically relates to a device for measuring the circumferential temperature of the inner wall of a steel pipe end. Background Technology

[0002] Currently, high-grade oil casing is typically produced using a water-quenching and tempering process. The quenching temperature of the steel pipe must be controlled within a certain range; too low a temperature will prevent complete austenitization, while too high a temperature will cause abnormal grain growth. The inner wall temperature of the steel pipe end is a better indicator of its true temperature than the outer wall temperature. Due to factors such as the arrangement of the steel pipes in the furnace and the direction of flame flow, there are slight differences in the circumferential temperature of large-diameter steel pipes. Therefore, it is necessary to understand the circumferential temperature distribution of the inner wall of large-diameter steel pipes. Manual temperature measurement can affect the quenching quality of the steel pipes and poses certain safety hazards. Therefore, most companies indirectly estimate the quenching temperature of the steel pipes based on the furnace exit temperature and cooling time. However, there is usually a slight deviation between the estimated and actual quenching temperatures. Therefore, it is necessary to develop a device for measuring the circumferential temperature of the inner wall of the steel pipe end.

[0003] After searching, three patent documents were found to be most relevant to this utility model technology. The specific contents are described below:

[0004] Patent document CN 201621244539.2 discloses a lever-type steel pipe inner wall temperature detection device, which mainly includes a detection device body, lever, resistance arm, power arm, connecting rod, rotating arm mounting component, rotating arm, thermocouple temperature measuring head, sliding rod, limiting component, spring and steel wire. This device is ingeniously designed and can detect the temperature of the inner wall of the steel pipe at any time, realize online detection of the thickened section of the steel pipe, and effectively solve the problem of temperature interference of iron oxide scale on infrared detection. It can effectively ensure the quality of steel pipe thickening. This utility model has the characteristics of simple structure, high detection accuracy and long service life. However, this device is only suitable for measuring the inner wall temperature of the steel pipe during induction heating, and is not suitable for measuring the circumferential temperature of the inner wall of the steel pipe port.

[0005] Patent document CN 201820644917.9 discloses a device for measuring the circumferential temperature of a rotary kiln shell surface. The device mainly includes a thermometer, a trigger, gears, a wireless module, a computer system, and a trigger switch. This ingenious design determines the starting point for measuring the circumferential temperature of the shell surface, facilitating the correlation between the measured temperature and the cross-sectional position. The signal from the trigger switch is transmitted via the wireless module, and the measuring system can be moved according to the measurement point position, avoiding the inconvenience of on-site wiring. This invention features a simple structure, convenient data acquisition, and data storage capabilities, allowing for retrieval. However, this device is only suitable for measuring the circumferential temperature of the rotary kiln shell surface and not for measuring the circumferential temperature of the inner wall of a steel pipe port.

[0006] Patent document CN 202211295392.X discloses a measuring device for the circumferential temperature distribution of a turbine guide, which mainly includes a turbine guide body, a thermocouple mounting base, a thermocouple, a nut, a support plate, and a base. The device is ingeniously designed. The unique structure of the thermocouple mounting base can both restrict the angular rotation of the thermocouple and achieve a very good sealing effect. Multiple temperature measuring points are evenly distributed along the outer ring of the turbine guide to obtain detailed circumferential temperature distribution. This utility model has the characteristics of simple structure and easy assembly, and can conveniently measure the circumferential temperature distribution of the turbine guide. However, this device is only suitable for measuring the circumferential temperature distribution of the turbine guide and is not suitable for measuring the circumferential temperature of the inner wall of the steel pipe port. Utility Model Content

[0007] To overcome one or more problems existing in the prior art, this utility model provides a device for measuring the circumferential temperature of the inner wall of a steel pipe port. The combined use of the base plate and bolts enables the positioning of the first support, and the combined use of the first support and bolts enables the relative positioning of two linear bearings. The use of the linear bearings enables the horizontal movement of the connecting rod, thereby enabling the horizontal movement of the temperature measuring rod. The use of the connecting rod enables the relative positioning of two second supports. The use of the fourth support enables the positioning connection of the connecting rod and the second support. The combined use of the second support and the rolling bearing enables the positioning and rotation of the rotating shaft. The use of the third support enables the positioning of two temperature measuring rods. The combined use of the fastening bolts and the rotating shaft enables the positioning and swinging of the third support, thereby enabling the circumferential movement of the temperature measuring rods. The use of two temperature measuring rods enables the alternating measurement of the circumferential temperature of the inner wall of the steel pipe port. Therefore, the device of this utility model has a relatively good performance.

[0008] The technical solution adopted by this utility model to solve its technical problem is as follows.

[0009] The device for measuring the circumferential temperature of the inner wall of a steel pipe port provided by this utility model includes a base plate, a first support, two second supports, a third support, four fourth supports, two linear bearings, a rotating shaft, a fastening bolt, two temperature measuring rods, four connecting rods, twelve bolts, and two rolling bearings.

[0010] The first bracket is composed of a first body, four first protrusions, and two second protrusions connected together. The first body, the first protrusions, and the second protrusions are all symmetrical rectangular parallelepiped structures. The four first protrusions are arranged opposite each other in pairs and are located on the upper end face of the first body. The two second protrusions are arranged opposite each other and are located on the upper end face of the four first protrusions respectively. The upper end face of the first body has four cylindrical first through holes symmetrically opened, and the bolts are inserted into the first through holes. The four corners of the front end face of the second protrusions are each provided with a second screw hole, and the bolts are screwed into the second screw holes. The front end face of the second protrusions also has four cylindrical second through holes symmetrically opened, and the third protrusion of the linear bearing is inserted into the second through holes. The middle part of the front end face of the second protrusions has a cylindrical third through hole, and the isolation section of the rotating shaft is inserted into the third through hole. The middle part of the front end face of the second protrusions also has two cylindrical fourth through holes symmetrically opened, and the fourth through holes are used to insert data cables.

[0011] The second bracket is composed of a third body, four fourth protrusions, and a fifth protrusion. The third body and the fourth protrusions are both symmetrical cuboid structures. The four fourth protrusions are arranged opposite each other and simultaneously located on the rear end face of the third body. The fifth protrusion is located on the rear end face of the third body. Two cylindrical ninth through holes are symmetrically formed in the middle of the front end face of the third body, and data cables are threaded through these ninth through holes. A cylindrical first groove is formed in the middle of the rear end face of the fourth protrusion, and the end of the connecting rod is threaded through the first groove. Two cylindrical tenth through holes are symmetrically formed on the upper end face of the fourth protrusion, and the seventh protrusion of the fourth bracket is threaded through the tenth through holes. The fifth protrusion is a symmetrical cylindrical structure. A cylindrical second groove is formed on the axial portion of the rear end face of the fifth protrusion, and the rolling bearing is threaded through the second groove. A cylindrical eleventh through hole is formed on the axial portion of the second groove, and the bearing section of the rotating shaft is threaded through the eleventh through hole, which also penetrates the third body.

[0012] The third bracket is composed of a fourth body and two sixth protrusions connected together. The fourth body has a symmetrical rectangular parallelepiped structure. The two sixth protrusions are arranged opposite each other and are located on the front end face of the fourth body. A twelfth through hole in the middle of the front end face of the fourth body is provided, and the locking section of the rotating shaft passes through the twelfth through hole. The sixth protrusion has a symmetrical cylindrical structure. A fourth screw hole is provided on the axis of the sixth protrusion. The seventh body of the temperature measuring rod is screwed into the fourth screw hole, which is also used to pass through the data cable. The fourth screw hole also passes through the fourth body.

[0013] The fourth bracket is composed of a fifth body and two seventh protrusions connected together. The fifth body is a cuboid symmetrical structure. The two seventh protrusions are arranged opposite each other and are located on the lower end face of the fifth body. The seventh protrusion is a cylindrical symmetrical structure used to pass through the tenth through hole of the second bracket and the through groove of the connecting rod.

[0014] In some embodiments, the base plate has a symmetrical rectangular parallelepiped structure, and four first screw holes are symmetrically opened on the upper end face of the base plate, with the bolts screwed into the first screw holes.

[0015] In some embodiments, the linear bearing comprises a second body and four third bosses connected together. The second body has a symmetrical rectangular parallelepiped structure. The four third bosses are arranged opposite each other in pairs and are located on the front end face of the second body. A cylindrical fifth through hole is opened at each of the four corners of the front end face of the second body, and the bolt passes through the fifth through hole. A cylindrical sixth through hole is opened at the middle part of the front end face of the second body, and the isolation section of the rotating shaft passes through the sixth through hole. Two cylindrical seventh through holes are also symmetrically opened at the middle part of the front end face of the second body, and data cables are passed through the seventh through holes. The third boss has a symmetrical cylindrical structure. A cylindrical eighth through hole is opened at the axis of the third boss, and the middle part of the connecting rod passes through the eighth through hole. The eighth through hole also penetrates the second body. A cage, balls, and retaining rings are also provided inside the third boss.

[0016] In some embodiments, the rotating shaft is composed of a coaxial isolation section, two bearing sections, and two locking sections connected together. The isolation section and the bearing sections are both cylindrical symmetrical structures. The two bearing sections are arranged opposite each other and are located on the front and rear end faces of the isolation section, respectively. The two locking sections are also arranged opposite each other and are located on the front and rear end faces of the bearing sections, respectively. The locking section is a regular octagonal symmetrical structure used to pass through the twelfth through hole of the third bracket. A third screw hole is provided on the front or rear face of the locking section, and the eighth boss of the fastening bolt is screwed into the third screw hole. The bearing sections are used to carry the rolling bearings, and the diameter of the bearing section should be smaller than the diameter of the isolation section but larger than the diameter of the circumscribed circle of the locking section.

[0017] In some embodiments, the fastening bolt is composed of a sixth body and an eighth boss connected coaxially. The sixth body and the eighth boss are both cylindrical symmetrical structures. The eighth boss is located on the rear end face of the sixth body. The side of the eighth boss is threaded for screwing into the third threaded hole of the rotating shaft.

[0018] In some embodiments, the temperature measuring rod is composed of a seventh body and a ninth protrusion connected coaxially. Both the seventh body and the ninth protrusion are cylindrical symmetrical structures. The ninth protrusion is located on the front end face of the seventh body. The side of the seventh body is threaded for screwing into the fourth screw hole of the third bracket. A terminal is provided inside the seventh body, and a thermocouple is provided inside the ninth protrusion.

[0019] In some embodiments, the connecting rod is a cylindrical symmetrical structure, with the middle part of the connecting rod passing through the eighth through hole of the linear bearing, and the two ends of the connecting rod passing through the first groove of the second bracket; the two ends of the connecting rod are respectively provided with two opposing semi-cylindrical through slots, and the seventh boss of the fourth bracket passes through the through slots.

[0020] In some embodiments, both the bolt and the rolling bearing are standard parts.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1) The measuring device for the circumferential temperature of the inner wall of the steel pipe port provided by this utility model includes a base plate, a first support, two second supports, a third support, four fourth supports, two linear bearings, a rotating shaft, a fastening bolt, two temperature measuring rods, four connecting rods, twelve bolts and two rolling bearings. Since the materials are common and easy to process and form, the manufacturing cost of this utility model device is relatively low.

[0023] 2) When using this utility model device, initially, the two temperature measuring rods are positioned left and right. The first steel pipe is placed in the predetermined position, and the two sets of data cables are passed through the ninth, seventh, and fourth through holes and connected to the terminals of the two temperature measuring rods. Four connecting rods are moved forward horizontally along the eight eighth through holes of the two linear bearings, and the rotating shaft is rotated 180 degrees in the forward direction. The two temperature measuring rods can then measure the circumferential temperature of the inner wall of the first steel pipe port at close range. At this time, the two temperature measuring rods are still positioned left and right. Four connecting rods are moved backward horizontally along the eight eighth through holes of the two linear bearings, and the second steel pipe is placed in the predetermined position. Four connecting rods are moved forward horizontally along the eight eighth through holes of the two linear bearings, and the rotating shaft is rotated 180 degrees in the reverse direction. The two temperature measuring rods can then measure the circumferential temperature of the inner wall of the second steel pipe port at close range. Therefore, the operation of this utility model device is relatively simple.

[0024] 3) This utility model device adopts a symmetrical structure design. The combined use of the base plate and bolts enables the positioning of the first support, and the combined use of the first support and bolts enables the relative positioning of the two linear bearings. The use of linear bearings enables the horizontal movement of the connecting rod, thereby enabling the horizontal movement of the temperature measuring rod. The use of the connecting rod enables the relative positioning of the two second supports. The use of the fourth support enables the positioning connection of the connecting rod and the second support. The combined use of the second support and the rolling bearing enables the positioning and rotation of the rotating shaft. The use of the third support enables the positioning of the two temperature measuring rods. The combined use of the fastening bolts and the rotating shaft enables the positioning and swinging of the third support, thereby enabling the circumferential movement of the temperature measuring rods. The use of the two temperature measuring rods enables the alternating measurement of the circumferential temperature of the inner wall of the steel pipe port. Therefore, the performance of this utility model device is relatively good.

[0025] The device for measuring the circumferential temperature of the inner wall of the steel pipe port provided by this utility model can achieve the purpose of measuring the circumferential temperature of the inner wall of the steel pipe port alternately at close range. This utility model device has the characteristics of low manufacturing cost, simple operation and good use effect. Attached Figure Description

[0026] Figure 1 This is a rear view schematic diagram of the circumferential temperature measuring device for the inner wall of the steel pipe port according to this utility model.

[0027] Figure 2 This is a left-side structural schematic diagram of the measuring device for the circumferential temperature of the inner wall of the steel pipe port according to this utility model.

[0028] Figure 3 This is a top view schematic diagram of the circumferential temperature measuring device for the inner wall of the steel pipe port according to this utility model.

[0029] Figure 4 This is a top view of the base plate of this utility model.

[0030] Figure 5 This is a front view schematic diagram of the first bracket of this utility model;

[0031] Figure 6 This is a schematic diagram of the left-side structure of the first support of this utility model;

[0032] Figure 7 This is a top view of the first support structure of this utility model;

[0033] Figure 8 This is a front view schematic diagram of the linear bearing of this utility model;

[0034] Figure 9 This is a top view of the linear bearing of this utility model.

[0035] Figure 10 This is a rear view schematic diagram of the second bracket of this utility model;

[0036] Figure 11 This is a schematic diagram of the left-side structure of the second support of this utility model;

[0037] Figure 12 This is a top view of the second support structure of this utility model;

[0038] Figure 13 This is a rear view schematic diagram of the rotating shaft of this utility model;

[0039] Figure 14 This is a schematic diagram of the left-side structure of the rotating shaft of this utility model;

[0040] Figure 15 This is a front view schematic diagram of the third bracket of this utility model;

[0041] Figure 16 This is a top view of the third support structure of this utility model;

[0042] Figure 17 This is a rear view schematic diagram of the fourth bracket of this utility model;

[0043] Figure 18 This is a top view of the fastening bolt of this utility model.

[0044] Figure 19 This is a schematic diagram of the left side of the temperature measuring rod of this utility model;

[0045] Figure 20 This is a top view of the connecting rod of this utility model.

[0046] Figure 21 This is a rear view schematic diagram of the rotating shaft of this utility model when it is rotating in the forward direction;

[0047] Figure 22 This is a rear view schematic diagram of the rotating shaft of this utility model when it is rotated in the opposite direction.

[0048] Figure 23 This is a rear view schematic diagram of the movement trajectory of the two temperature measuring rods when the rotating shaft rotates in the forward direction.

[0049] Figure 24 This is a rear view structural diagram showing the movement trajectory of the two temperature measuring rods when the rotating shaft rotates in the opposite direction.

[0050] Explanation of reference numerals in the attached drawings: 1-Base plate; 101-First screw hole; 2-First bracket; 201-First body; 202-First boss; 203-Second boss; 204-First through hole; 205-Second screw hole; 206-Second through hole; 207-Third through hole; 208-Fourth through hole; 3-Linear bearing; 301-Second body; 302-Third boss; 303-Fifth through hole; 304-Sixth through hole; 305-Seventh through hole; 306-Eighth through hole; 4-Second bracket; 401-Third body; 402-Fourth boss; 403-Fifth boss; 404-Ninth through hole; 405-First groove; 406 - 10th through hole; 407- 2nd groove; 408- 11th through hole; 5- Rotating shaft; 501- Isolation section; 502- Bearing section; 503- Locking section; 504- 3rd screw hole; 6- 3rd bracket; 601- 4th body; 602- 6th boss; 603- 12th through hole; 604- 4th screw hole; 7- 4th bracket; 701- 5th body; 702- 7th boss; 8- Fastening bolt; 801- 6th body; 802- 8th boss; 9- Temperature measuring rod; 901- 7th body; 902- 9th boss; 10- Connecting rod; 1001- Through groove; 11- Bolt; 12- Rolling bearing; 13- Steel pipe. Detailed Implementation

[0051] The present invention will be described in detail below with reference to the embodiments and accompanying drawings. The embodiments are only for understanding the present invention and are not intended to limit the content of the present invention.

[0052] Combination Figures 1 to 3As shown, the measuring device for the circumferential temperature of the inner wall of a steel pipe port provided by this utility model includes a base plate 1, a first support 2, two second supports 4, a third support 6, four fourth supports 7, two linear bearings 3, a rotating shaft 5, a fastening bolt 8, two temperature measuring rods 9, four connecting rods 10, twelve bolts 11, and two rolling bearings 12. The upper surface of the horizontally arranged base plate 1 is provided with a first body 201 of the first support 2, which is connected by four bolts 11. The front and rear end faces of the two second protrusions 203 of the first support 2 are provided with two opposing second bodies 301 of the two linear bearings 3, which are connected by eight bolts 11. Eight third protrusions 302 of the two linear bearings 3 pass through eight second through holes 206 of the first support 2. Four middle portions of four opposing connecting rods 10 pass through eight eighth through holes 306 of the two linear bearings 3. The eight ends of the four connecting rods 10 pass through eight first grooves 40 of the opposing second supports 4. Within 5; within the sixteen tenth through holes 406 of the two second brackets 4, eight seventh protrusions 702 of the four fourth brackets 7 arranged in pairs opposite each other are inserted, and the eight seventh protrusions 702 of the four fourth brackets 7 are also inserted within the sixteen through slots 1001 of the four connecting rods 10; within the two second grooves 407 of the two second brackets 4, two rolling bearings 12 are inserted, and within the two rolling bearings 12, two bearing sections 502 of a rotating shaft 5 are inserted; the isolation section 501 of the rotating shaft 5 is also inserted within The first bracket 2 has two third through holes 207 and two sixth through holes 304 of the two linear bearings 3. The first locking section 503 of the rotating shaft 5 is inserted into a twelfth through hole 603 of the third bracket 6. The fourth body 601 of the third bracket 6 is set on the front end face of the third body 401 of the second bracket 4 and is connected by a fastening bolt 8. The two seventh bodies 901 of the two temperature measuring rods 9 are screwed into the two fourth screw holes 604 of the third bracket 6.

[0053] The present invention provides an assembly method for a measuring device for the circumferential temperature of the inner wall of a steel pipe port.

[0054] Combination Figures 1 to 20 As shown, firstly, a base plate 1 is horizontally set, then the first body 201 of a first bracket 2 is set on the upper end face of the base plate 1, and the four first through holes 204 of the first bracket 2 are aligned with the four first screw holes 101 of the base plate 1. Then, four bolts 11 are passed through the four first through holes 204 and screwed into the four first screw holes 101. In this way, a first bracket 2 and a base plate 1 can be assembled.

[0055] Then, the eight third bosses 302 of the two linear bearings 3 are positioned opposite each other and respectively passed through the eight second through holes 206 of the first bracket 2. At this time, the eight fifth through holes 303 of the two linear bearings 3 and the eight second screw holes 205 of the first bracket 2 are aligned. Then, the eight bolts 11 are passed through the eight fifth through holes 303 and screwed into the eight second screw holes 205. In this way, the two linear bearings 3 and the first bracket 2 can be assembled.

[0056] Then, the four connecting rods 10 are arranged in pairs facing each other, and the sixteen through slots 1001 are arranged in a left-right orientation. Then, the four middle parts of the four connecting rods 10 are respectively inserted into the eight eighth through holes 306 of the two linear bearings 3. Then, the isolation section 501 of the rotating shaft 5 is successively inserted into the two sixth through holes 304 of the two linear bearings 3 and the two third through holes 207 of the first bracket 2. In this way, the four connecting rods 10, the two linear bearings 3 and the rotating shaft 5 can be assembled.

[0057] Then, two rolling bearings 12 are installed in the two second grooves 407 of the two second brackets 4. Then, the two second brackets 4 are positioned in front of each other. Then, the two bearing sections 502 of the rotating shaft 5 are respectively inserted into the two rolling bearings 12. At the same time, the eight ends of the four connecting rods 10 are respectively inserted into the eight first grooves 405 of the two second brackets 4. In this way, the two second brackets 4, the two rolling bearings 12, the rotating shaft 5 and the four connecting rods 10 can be assembled.

[0058] Then, the sixteen through slots 1001 of the four connecting rods 10 and the sixteen tenth through holes 406 of the two second brackets 4 are aligned, and then the eight seventh protrusions 702 of the four fourth brackets 7 are successively inserted into the sixteen tenth through holes 406 of the two second brackets 4 and the sixteen through slots 1001 of the four connecting rods 10. In this way, the two second brackets 4, the four connecting rods 10 and the four fourth brackets 7 can be assembled.

[0059] Then, the fourth body 601 of the third bracket 6 is placed on the front end face of the third body 401 of the second bracket 4, and the locking section 503 of the rotating shaft 5 is inserted into the twelfth through hole 603 of the third bracket 6. Then, the eighth boss 802 of the fastening bolt 8 is screwed into the third screw hole 504 of the rotating shaft 5. Finally, the two seventh bodies 901 of the two temperature measuring rods 9 are screwed into the two fourth screw holes 604 of the third bracket 6 respectively. In this way, the entire device is assembled and can be put into use.

[0060] The principles for setting the rotation direction and rotation angle of the shaft of the measuring device for the circumferential temperature of the inner wall of the steel pipe port provided by this utility model.

[0061] Combination Figures 1 to 3 As shown, for ease of description, the rotating shaft 5 can be set as point O;

[0062] The rotating shaft 5 rotates 180 degrees clockwise. This rotation direction can be defined as positive. (Simplified as follows...) Figure 21 As shown;

[0063] The rotating shaft 5 rotates 180 degrees counterclockwise. This rotation direction can be defined as reverse. For simplification, as follows: Figure 22 As shown.

[0064] The working principle of the measuring device for the circumferential temperature of the inner wall of the steel pipe port provided by this utility model

[0065] Combination Figure 3 As shown, for ease of description, the two temperature measuring rods 9 can be defined as ① and ② respectively. The cross-section of the steel pipe 13 is divided according to the scale position of the dial, with the three o'clock scale position set as point A, the six o'clock scale position as point B, the nine o'clock scale position as point C, and the twelve o'clock scale position as point D. Since a locking section 503 of the rotating shaft 5 passes through the twelfth through hole 603 of the third bracket 6, the third bracket 6 also rotates synchronously when the rotating shaft 5 rotates.

[0066] Assuming the two temperature measuring rods 9 are initially positioned left and right, and the rotating shaft 5 rotates 180 degrees in the positive direction, the two temperature measuring rods 9 will still be positioned left and right, only the positions of ① and ② will be interchanged. Simplified as follows: Figure 23 As shown; ① can measure the temperature of the inner arc CDA of the steel pipe 13, and ② can measure the temperature of the inner arc ABC of the steel pipe 13. Since the inner arc CDA + inner arc ABC = the entire inner circumference ABCD, the combined use of ① and ② can measure the inner wall temperature of the entire circumference of the steel pipe 13.

[0067] Assuming the two temperature measuring rods 9 are initially positioned left and right, and the rotating shaft 5 rotates 180 degrees in the opposite direction, the two temperature measuring rods 9 will still be positioned left and right, only the positions of ① and ② will be interchanged. Simplified as follows: Figure 24 As shown; ① can measure the temperature of the inner arc ADC of the steel pipe 13, and ② can measure the temperature of the inner arc CBA of the steel pipe 13. Since the inner arc ADC + inner arc CBA = the entire inner circumference ABCD, the combined use of ① and ② can measure the inner wall temperature of the entire circumference of the steel pipe 13.

[0068] In summary, when the rotating shaft 5 rotates 180 degrees in the forward direction for the first time, the two temperature measuring rods 9 can measure the inner wall temperature of the first steel pipe; when the rotating shaft 5 rotates 180 degrees in the reverse direction for the first time, the two temperature measuring rods 9 can measure the inner wall temperature of the second steel pipe; and so on. When the rotating shaft 5 rotates 180 degrees in the forward direction for the nth time (n is a natural number), the two temperature measuring rods 9 can measure the inner wall temperature of the (2n-1)th steel pipe; when the rotating shaft 5 rotates 180 degrees in the reverse direction for the nth time, the two temperature measuring rods 9 can measure the inner wall temperature of the 2nth steel pipe.

[0069] The method of using the measuring device for the circumferential temperature of the inner wall of the steel pipe port provided by this utility model

[0070] Assuming the two temperature measuring rods 9 are initially positioned left and right, first, the first steel pipe 13 is placed in a predetermined position. Then, two sets of data cables are passed sequentially through the ninth through hole 404 of the second bracket 4, the seventh through hole 305 of the linear bearing 3, and the fourth through hole 208 of the first bracket 2, connecting to the terminals of the two temperature measuring rods 9. Next, four connecting rods 10 are moved horizontally forward along the eight eighth through holes 306 of the two linear bearings 3. Then, the rotating shaft 5 is rotated 180 degrees in the positive direction. In this way, the two temperature measuring rods 9 can measure the circumferential temperature of the inner wall of the port of the first steel pipe 13 at close range. Figure 3 As shown;

[0071] At this time, the two temperature measuring rods 9 are still positioned left and right. Then, four connecting rods 10 are moved horizontally backward along the eight eighth through holes 306 of the two linear bearings 3. The second steel pipe 13 is then placed in the predetermined position. Then, four connecting rods 10 are moved horizontally forward along the eight eighth through holes 306 of the two linear bearings 3. The rotating shaft 5 is then rotated 180 degrees in the opposite direction. In this way, the two temperature measuring rods 9 can measure the circumferential temperature of the inner wall of the port of the second steel pipe 13 at close range.

[0072] Supplementary Explanation: The measuring device for the circumferential temperature of the inner wall of the steel pipe port provided by this utility model adopts a symmetrical structure design. First, according to the inner diameter specification and setting height of the steel pipe 13, multiple specifications of this utility model device should be designed and manufactured to match it. The predetermined position means that the axis of the steel pipe 13 should coincide with the axis of the rotating shaft 5, and when the four connecting rods 10 are moved horizontally forward along the eight eighth through holes 306 of the two linear bearings 3, the two ninth protrusions 902 of the two temperature measuring rods 9 can fully extend into the port of the steel pipe 13, that is, the temperature measuring rod 9 has the optimal measuring position. At this time, the position of the steel pipe 13 is the predetermined position.

[0073] As can be seen from the embodiments, the measuring device for the circumferential temperature of the inner wall of the steel pipe port provided by this utility model can achieve the purpose of alternating measurement of the circumferential temperature of the inner wall of the steel pipe port at close range. This utility model device has the characteristics of low manufacturing cost, simple operation and good use effect.

[0074] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features.

Claims

1. A device for measuring the circumferential temperature of the inner wall of a steel pipe end, characterized by, The measuring device for the circumferential temperature of the inner wall of the steel pipe port includes: a base plate (1), a first support (2), two second supports (4), a third support (6), four fourth supports (7), two linear bearings (3), a rotating shaft (5), a fastening bolt (8), two temperature measuring rods (9), four connecting rods (10), twelve bolts (11), and two rolling bearings (12), wherein: The first bracket (2) is composed of a first body (201), four first protrusions (202) and two second protrusions (203). The first body (201), the first protrusions (202) and the second protrusions (203) are all symmetrical rectangular parallelepiped structures. The four first protrusions (202) are arranged opposite each other and are located on the upper surface of the first body (201). The two second protrusions (203) are arranged opposite each other and are located on the upper surface of the four first protrusions (202). The upper surface of the first body (201) is symmetrically provided with four cylindrical first through holes (204), and the bolts (11) are inserted into the first through holes (204). The front end face of the second protrusion (203) Each of the four corners of the second boss (203) has a second screw hole (205) and the bolt (11) is screwed into the second screw hole (205); the front end face of the second boss (203) also has four cylindrical second through holes (206) symmetrically opened, and the third boss (302) of the linear bearing (3) is inserted into the second through hole (206); the middle part of the front end face of the second boss (203) has a cylindrical third through hole (207) and the isolation section (501) of the rotating shaft (5) is inserted into the third through hole (207); the middle part of the front end face of the second boss (203) also has two cylindrical fourth through holes (208) symmetrically opened, and the fourth through holes (208) are used to insert data cables. The second bracket (4) is composed of a third body (401), four fourth protrusions (402), and a fifth protrusion (403). The third body (401) and the fourth protrusions (402) are both symmetrical cuboid structures. The four fourth protrusions (402) are arranged opposite each other and are located on the rear end face of the third body (401). The fifth protrusion (403) is located on the rear end face of the third body (401). Two cylindrical ninth through holes (404) are symmetrically opened in the middle part of the front end face of the third body (401). Data cables are passed through the ninth through holes (404). A cylindrical first groove (405) is opened in the middle part of the rear end face of the fourth protrusion (402). Data cables are passed through the first groove (405). The end of the connecting rod (10); the upper end face of the fourth boss (402) is symmetrically provided with two cylindrical tenth through holes (406), and the seventh boss (702) of the fourth bracket (7) is inserted through the tenth through hole (406); the fifth boss (403) is a cylindrical symmetrical structure, and a cylindrical second groove (407) is provided at the axial part of the rear end face of the fifth boss (403), and the rolling bearing (12) is inserted through the second groove (407); a cylindrical eleventh through hole (408) is provided at the axial part of the second groove (407), and the bearing section (502) of the rotating shaft (5) is inserted through the eleventh through hole (408), and the eleventh through hole (408) also penetrates the third body (401); The third bracket (6) is composed of a fourth body (601) and two sixth protrusions (602). The fourth body (601) is a rectangular parallelepiped symmetrical structure. The two sixth protrusions (602) are arranged opposite to each other and are located on the front end face of the fourth body (601). A regular octagonal twelfth through hole (603) is opened in the middle part of the front end face of the fourth body (601). The locking section (503) of the rotating shaft (5) is inserted through the twelfth through hole (603). The sixth protrusion (602) is a cylindrical symmetrical structure. A fourth screw hole (604) is opened on the axis of the sixth protrusion (602). The seventh body (901) of the temperature measuring rod (9) is screwed into the fourth screw hole (604), which is also used to thread the data cable. The fourth screw hole (604) also penetrates the fourth body (601). The fourth bracket (7) is composed of a fifth body (701) and two seventh protrusions (702). The fifth body (701) is a rectangular parallelepiped symmetrical structure. The two seventh protrusions (702) are arranged opposite to each other and are located on the lower end face of the fifth body (701). The seventh protrusion (702) is a cylindrical symmetrical structure used to pass through the tenth through hole (406) of the second bracket (4) and the through groove (1001) of the connecting rod (10).

2. The apparatus for measuring the circumferential temperature of the inner wall of the end portion of a steel pipe according to claim 1, characterized by The base plate (1) is a symmetrical rectangular parallelepiped structure. Four first screw holes (101) are symmetrically opened on the upper end face of the base plate (1), and the bolts (11) are screwed into the first screw holes (101).

3. The apparatus for measuring the circumferential temperature of the inner wall of the end portion of a steel pipe according to claim 1, characterized by The linear bearing (3) is composed of a second body (301) and four third bosses (302). The second body (301) is a symmetrical rectangular parallelepiped structure. The four third bosses (302) are arranged opposite each other and are located on the front end face of the second body (301). A cylindrical fifth through hole (303) is opened at each of the four corners of the front end face of the second body (301), and the bolt (11) is inserted into the fifth through hole (303). A cylindrical sixth through hole (304) is opened at the middle part of the front end face of the second body (301), and a bolt (11) is inserted into the sixth through hole (304). The shaft (5) has an isolation section (501); the second body (301) also has two cylindrical seventh through holes (305) symmetrically opened in the middle part of the front end face, and the seventh through holes (305) are used to pass through the data cable; the third boss (302) is a cylindrical symmetrical structure, and a cylindrical eighth through hole (306) is opened in the axial part of the third boss (302), and the middle part of the connecting rod (10) is passed through the eighth through hole (306). The eighth through hole (306) also passes through the second body (301). The third boss (302) also has a retainer, ball and retaining ring.

4. The apparatus for measuring the circumferential temperature of the inner wall of the end portion of a steel pipe according to claim 1, characterized by The rotating shaft (5) is composed of a coaxial isolation section (501), two bearing sections (502), and two locking sections (503). The isolation section (501) and the bearing sections (502) are both cylindrical symmetrical structures. The two bearing sections (502) are arranged opposite to each other and are located on the front and rear end faces of the isolation section (501), respectively. The two locking sections (503) are arranged opposite to each other and are located on the front and rear end faces of the two bearing sections (502), respectively. The locking section (503) is an octagonal shape. The body-shaped symmetrical structure is used to pass through the twelfth through hole (603) of the third bracket (6); a third screw hole (504) is opened on the front end face or rear end face of the locking section (503), and the eighth boss (802) of the fastening bolt (8) is screwed into the third screw hole (504); the bearing section (502) is used to pass through the rolling bearing (12), and the diameter of the bearing section (502) should be smaller than the diameter of the isolation section (501), but larger than the diameter of the outer circle of the locking section (503).

5. The apparatus for measuring the temperature of the inner wall of the end of a steel pipe according to claim 1, wherein The fastening bolt (8) is composed of a sixth body (801) and an eighth boss (802) connected coaxially. The sixth body (801) and the eighth boss (802) are both cylindrical symmetrical structures. The eighth boss (802) is located on the rear end face of the sixth body (801). The side of the eighth boss (802) is threaded for screwing into the third screw hole (504) of the rotating shaft (5).

6. The apparatus for measuring the temperature of the inner wall of the end of a steel pipe according to claim 1, wherein The temperature measuring rod (9) is composed of a seventh body (901) and a ninth protrusion (902) connected coaxially. The seventh body (901) and the ninth protrusion (902) are both cylindrical symmetrical structures. The ninth protrusion (902) is located on the front end face of the seventh body (901). The side of the seventh body (901) is provided with threads for screwing the fourth screw hole (604) of the third bracket (6). The seventh body (901) is provided with a terminal, and the ninth protrusion (902) is provided with a thermocouple.

7. The apparatus for measuring the temperature of the inner wall of the end of a steel pipe according to claim 1, wherein The connecting rod (10) has a cylindrical symmetrical structure. The middle part of the connecting rod (10) passes through the eighth through hole (306) of the linear bearing (3). The two ends of the connecting rod (10) pass through the first groove (405) of the second bracket (4). The two ends of the connecting rod (10) are respectively provided with two oppositely arranged semi-cylindrical through grooves (1001). The seventh boss (702) of the fourth bracket (7) passes through the through grooves (1001).

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