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

Abstract

The utility model discloses a device for measuring the 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 temperature of the inner wall of the port of the steel pipe comprises a bottom plate, two connecting plates, a first bracket, a second bracket, four third brackets, four fourth brackets, four fifth brackets, a temperature measuring rod, 36 screws, 16 rolling bearings, four wheels and four axles, the device can achieve the purpose of measuring the 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] The utility model belongs to the technical field of steel pipe production temperature measuring equipment, and particularly relates to a device for measuring the temperature of the inner wall of a steel pipe port. BACKGROUND

[0002] At present, high-grade oil casing is usually produced by using water quenching and tempering process, and the quenching temperature of the steel pipe should be controlled within a certain range. If the temperature is too low, the structure cannot be fully austenitized, and if the temperature is too high, it will cause abnormal grain growth. Compared with the outer wall temperature of the steel pipe port, the inner wall temperature of the steel pipe port can better reflect the real temperature of the steel pipe. If artificial temperature measurement is used, on the one hand, it will reduce the work efficiency and increase the temperature drop of the steel pipe, thereby affecting the quenching quality of the steel pipe, and on the other hand, the measurement personnel will be subjected to long-term high-temperature radiation, which has certain safety hazards. Therefore, most enterprises indirectly calculate the quenching temperature of the steel pipe according to the tapping temperature and temperature drop time of the steel pipe. Under normal circumstances, there will be a small deviation between the calculated quenching temperature and the actual quenching temperature of the steel pipe. Therefore, it is necessary to develop a device capable of accurately measuring the inner wall temperature of the steel pipe port.

[0003] After searching, three patent documents were found to be most relevant to the utility model technology, and the specific contents are described as follows:

[0004] Patent document CN 200520048051.8 discloses a lever type steel pipe inner wall temperature detection device, which mainly comprises an induction heating coil, a detection rod sleeve, a thermocouple temperature detection rod, a temperature detection instrument, a hydraulic piston rod, a hydraulic cylinder and a tension spring rod. The device has a clever design. When the steel pipe is heated, the hydraulic piston rod or the tension spring rod starts to work, and the thermocouple temperature head can descend and closely contact the inner wall of the steel pipe for temperature measurement. The steel pipe shields the thermocouple, and the sleeve protects the detection rod and the thermocouple. The utility model has the characteristics of simple structure, high detection precision and long service life, but the device is only suitable for the inner wall temperature measurement of the steel pipe during induction heating, and is not suitable for the inner wall temperature measurement of the steel pipe at a specific position.

[0005] Patent document CN 200610023412.2 discloses a non-contact steel pipe inner wall temperature detection method and device, which mainly comprises an induction heating coil, an infrared probe head protection sleeve, a peephole opening mechanism, an infrared probe head, an optical fiber transmission line, a temperature detection instrument, a spring, a guide rod, a limiting plate and a cover plate. The device has a clever design. When the steel pipe is heated, the opening mechanism automatically opens the peephole, and the infrared probe head measures the temperature of the inner wall of the steel pipe. The protection sleeve can shield and protect the optical fiber transmission line and the temperature measurement head. The utility model has the characteristics of simple structure, high detection precision and long service life, but the device is only suitable for the inner wall temperature measurement of the steel pipe during induction heating, and is not suitable for the inner wall temperature measurement of the steel pipe at a specific position.

[0006] The utility model discloses a kind of steel pipe inner wall temperature detection devices of lever type, it mainly includes detection device ontology, lever, resistance arm, power arm, connecting rod, swivel arm mounting, swivel arm, thermocouple temperature measuring head, sliding rod, limit piece, spring and steel wire, the device ingenious, can detect the temperature of steel pipe inner wall at any time, realize the on-line detection of steel pipe thickening section, and effectively solve the temperature interference problem of oxide scale to infrared detection, can effectively guarantee the quality of steel pipe thickening, the utility model has the characteristics of simple structure, high detection precision and long service life, but the device is only suitable for the inner wall temperature measurement of steel pipe during induction heating, and not suitable for the inner wall temperature measurement of steel pipe on specific position. Utility model content

[0007] In order to overcome one or more of the problems existing in the prior art, the utility model provides a device for measuring the temperature of the inner wall of the port of a steel pipe, the combined use of the bottom plate and the screws can realize the positioning of a second support, the combined use of the second support and the screws can realize the relative arrangement of two fourth supports arranged at the back; the combined use of the first support and the screws can realize the relative arrangement of two fourth supports arranged at the front, the combined use of the connecting plates and the screws can realize the relative arrangement of four fifth supports; the combined use of the fourth supports, the fifth supports and the rolling bearings can realize the rotary swing of the third support, thereby realizing the horizontal movement of the first support; the use of the first support can realize the positioning connection of the temperature measuring rod, and the use of the temperature measuring rod can realize the measurement of the temperature of the inner wall of the port of the steel pipe, so the use effect of the device is relatively good.

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

[0009] The device for measuring the temperature of the inner wall of the port of a steel pipe provided by the utility model comprises one bottom plate, two connecting plates, one first support, one second support, four third supports, four fourth supports, four fifth supports, one temperature measuring rod, thirty-six screws, sixteen rolling bearings, four wheels and four axles.

[0010] The first support is connected by a first body, a first boss, eight second bosses and a third boss, the first body and the first boss are both symmetric structures in the shape of cuboid, the first boss is located at the upper end surface of the first body, eight second bosses are divided into four groups and located at the lower end surface of the first body, and the third boss is located at the front end surface of the first boss; the rear end surface of the first boss is symmetrically provided with two groups of eight first through holes in the shape of cylinder, the first through holes are provided with the screws; the vertical section of the second boss is a symmetric structure in the shape of isosceles trapezoid, two second bosses in each group can form an isosceles trapezoidal through slot, and the through slot is provided with the wheel; a second through hole in the shape of cylinder is formed in the left end surface of the second boss, and the second through hole is provided with the axle; the third boss is a symmetric structure in the shape of cylinder, a second screw hole is formed in the axial part of the third boss, the sixth body of the temperature measuring rod is screwed into the second screw hole, and the second screw hole is also used for penetrating the data line, and the second screw hole penetrates the first boss;

[0011] The second support is connected by a second body and a fourth boss, the second body and the fourth boss are both symmetric structures in the shape of cuboid, the fourth boss is located at the upper end surface of the second body, the upper end surface of the second body is symmetrically provided with four third through holes in the shape of cylinder, and the third through holes are provided with the screws; a fourth through hole in the shape of cylinder is formed in the middle part of the rear end surface of the fourth boss, and the fourth through hole is used for penetrating the data line; the rear end surface of the fourth boss is symmetrically provided with two groups of eight fifth through holes in the shape of cylinder, and the fifth through holes are provided with the screws;

[0012] The third support is connected by two third bodies, a fifth boss and four bearing segments, the third body and the fifth boss are both symmetric structures in the shape of cuboid, the two third bodies are oppositely arranged, the fifth boss is located between the two third bodies, and the four bearing segments are oppositely arranged and respectively located at the upper and lower four end surfaces of the two third bodies; the bearing segment is a symmetric structure in the shape of cylinder and is used for penetrating the rolling bearing;

[0013] The fourth support is connected by a fourth body and two sixth bosses, the fourth body and the sixth bosses are cuboid symmetrical structures, the two sixth bosses are oppositely arranged and located on the rear end face of the fourth body, four third screw holes are symmetrically formed in the rear end face of the fourth body, and the third screw holes are screwed with the screws, a cylindrical first groove is formed in the middle part of the lower end face of the sixth boss, the first groove is penetrated with the rolling bearing, an axis part of the first groove is formed with a cylindrical seventh through hole, and the bearing segment of the third support is penetrated in the seventh through hole.

[0014] The fifth support is connected by a fifth body and a seventh boss, the fifth body and the seventh boss are cuboid symmetrical structures, the seventh boss is located on the left end face of the fifth body, two cylindrical second grooves are symmetrically formed in the upper end face of the fifth body, the second grooves are penetrated with the rolling bearing, an axis part of the second groove is formed with a cylindrical eighth through hole, the bearing segment of the third support is penetrated in the eighth through hole, and the right end face of the seventh boss is symmetrically formed with four fourth screw holes, and the fourth screw holes are screwed with the screws.

[0015] In some embodiments, the bottom plate is a cuboid symmetrical structure, four first screw holes are symmetrically formed in the rear half part of the upper end face of the bottom plate, and the first screw holes are screwed with the screws.

[0016] In some embodiments, the connecting plate is a cuboid symmetrical structure, two groups of eight cylindrical sixth through holes are symmetrically formed in the left end face of the connecting plate, and the sixth through holes are penetrated with the screws.

[0017] In some embodiments, the temperature measuring rod is connected by a coaxial sixth body and an eighth boss, the sixth body and the eighth boss are cylindrical symmetrical structures, the eighth boss is located on the front end face of the sixth body, the side face of the sixth body is formed with threads for screwing the second screw hole of the first support, the sixth body is provided with a wiring terminal, and the eighth boss is provided with a thermocouple.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1) The device for measuring the temperature of the inner wall of the steel pipe port comprises a bottom plate, two connecting plates, a first support, a second support, four third supports, four fourth supports, four fifth supports, a temperature measuring rod, thirty-six screws, sixteen rolling bearings, four wheels and four axles, the material is ordinary and convenient to process into a shape, therefore, the manufacturing cost of the device is relatively low.

[0020] 2) The device is initially set horizontally on the side of the water quenching unit, so that the four fifth bosses are set front and back, and the temperature probe can be inserted into the port of the steel pipe for several seconds, and a temperature probe is screwed in the second screw hole of the first support; when the high-temperature steel pipe is just stopped at the predetermined position, the four third supports are rotated forward by 90 degrees, so that the four fifth bosses are set front and back, and at the same time, the first support car moves horizontally forward, the eighth boss of the temperature probe can be partially inserted into the port of the steel pipe for close-range temperature measurement, so that the operation of the device is relatively simple.

[0021] 3) The device is designed with a symmetrical structure, and the combination of the bottom plate and the screw can realize the positioning of a second support, the combination of the second support and the screw can realize the relative arrangement of the two fourth supports behind, the combination of the first support and the screw can realize the relative arrangement of the two fourth supports in front, the combination of the connecting plate and the screw can realize the relative arrangement of the four fifth supports, and the combination of the fourth support, the fifth support and the rolling bearing can realize the rotation of the third support, and further realize the horizontal movement of the first support; the use of the first support can realize the positioning connection of the temperature probe, and the use of the temperature probe can realize the measurement of the temperature of the inner wall of the steel pipe port, so that the use effect of the device is relatively good.

[0022] The device for measuring the temperature of the inner wall of the steel pipe port can realize close-range measurement of the temperature of the inner wall of the steel pipe port, and has the characteristics of low manufacturing cost, simple operation and good use effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a top view structural schematic view of the device for measuring the temperature of the inner wall of the steel pipe port when the third support is set left and right;

[0024] Figure 2 is a rear view structural schematic view of the device for measuring the temperature of the inner wall of the steel pipe port when the third support is set front and back;

[0025] Figure 3 is a left view structural schematic view of the device for measuring the temperature of the inner wall of the steel pipe port when the third support is set front and back;

[0026] Figure 4 is a top view structural schematic view of the device for measuring the temperature of the inner wall of the steel pipe port when the third support is set front and back;

[0027] Figure 5It is the overhead structure schematic view of the bottom plate of the utility model;

[0028] Figure 6 It is the front view structure schematic view of the first support and the wheel after assembling of the utility model;

[0029] Figure 7 It is the left view structure schematic view of the first support and the wheel after assembling of the utility model;

[0030] Figure 8 It is the overhead structure schematic view of the first support and the wheel after assembling of the utility model;

[0031] Figure 9 It is the bottom view structure schematic view of the first support and the wheel after assembling of the utility model;

[0032] Figure 10 It is the rear view structure schematic view of the second support of the utility model;

[0033] Figure 11 It is the overhead structure schematic view of the second support of the utility model;

[0034] Figure 12 It is the left view structure schematic view of the connecting plate of the utility model;

[0035] Figure 13 It is the left view structure schematic view of the third support of the utility model;

[0036] Figure 14 It is the overhead structure schematic view of the third support of the utility model;

[0037] Figure 15 It is the rear view structure schematic view of the fourth support of the utility model;

[0038] Figure 16 It is the bottom view structure schematic view of the fourth support and a rolling bearing after assembling of the utility model;

[0039] Figure 17 It is the right view structure schematic view of the fifth support of the utility model;

[0040] Figure 18 It is the overhead structure schematic view of the fifth support and a rolling bearing after assembling of the utility model;

[0041] Figure 19 It is the left view structure schematic view of the temperature measuring stick of the utility model;

[0042] Figure 20 It is the overhead structure schematic view of the third support positive rotation swing of the utility model;

[0043] Figure 21The third support reverse rotary swing top view structure schematic diagram of the utility model shows;

[0044] Figure 22 The octagonal structure schematic diagram of the utility model when the third support is set left and right shows;

[0045] Figure 23 The octagonal structure schematic diagram of the utility model when the third support is set front and back shows.

[0046] Mark 1 - bottom plate; 101 - first screw hole; 2 - first support; 201 - first body; 202 - first boss; 203 - second boss; 204 - third boss; 205 - first through hole; 206 - through slot; 207 - second through hole; 208 - second screw hole; 3 - second support; 301 - second body; 302 - fourth boss; 303 - third through hole; 304 - fourth through hole; 305 - fifth through hole; 4 - connecting plate; 401 - sixth through hole; 5 - third support; 501 - third body; 502 - fifth boss; 503 - bearing section; 6 - fourth support; 601 - fourth body; 602 - sixth boss; 603 - third screw hole; 604 - first recess; 605 - seventh through hole; 7 - fifth support; 701 - fifth body; 702 - seventh boss; 703 - second recess; 704 - eighth through hole; 705 - fourth screw hole; 8 - temperature measuring stick; 801 - sixth body; 802 - eighth boss; 9 - screw; 10 - rolling bearing; 11 - wheel; 12 - axle; 13 - steel pipe. DETAILED DESCRIPTION

[0047] The content of the utility model is explained in detail below through examples and drawings, and the examples are only for understanding the utility model, and do not limit the content of the utility model.

[0048] Combined Figures 1 to 4As shown, the utility model provides a kind of device for measuring the temperature of steel pipe port inner wall, it includes a bottom plate 1, two connecting plates 4, a first support 2, a second support 3, four third supports 5, four fourth supports 6, four fifth supports 7, a temperature probe 8, thirty-six screws 9, sixteen rolling bearings 10, four wheels 11 and four axles 12;Wherein, the bottom plate 1 upper end surface of horizontal arrangement is provided with the second body 301 of a second support 3 in the rear end, and is connected by four screws 9;The fourth boss 302 of the second support 3 is provided with the two fourth bodies 601 of two fourth supports 6 on the front end surface, and is connected by eight screws 9;Four first recesses 604 of two fourth supports 6 are provided with four rolling bearings 10, and four bearing segments 503 of two third supports 5 are provided in four rolling bearings 10;Another four bearing segments 503 of two third supports 5 are provided in four rolling bearings 10, and four second recesses 703 of four fifth supports 7 are provided in two two opposite four rolling bearings 10;Another four second recesses 703 of four fifth supports 7 are provided with four rolling bearings 10, and four bearing segments 503 of another two third supports 5 are provided in four rolling bearings 10;Another four bearing segments 503 of another two third supports 5 are provided in four rolling bearings 10, and four first recesses 604 of another two fourth supports 6 are provided in four rolling bearings 10;The front end surface of the two fourth bodies 601 of another two fourth supports 6 is provided with the first boss 202 of a first support 2, and is connected by eight screws 9;Four wheels 11 are provided in four through slots 206 of the first support 2, and are connected by four axles 12;The sixth body 801 of a temperature probe 8 is screwed in the second screw hole 208 of the first support 2, and four wheels 11 are provided on the upper end surface of the bottom plate 1;Opposite two connecting plates 4 are provided on the left and right four end faces of four seventh bosses 702 of four fifth supports 7, and are connected by sixteen screws 9.

[0049] The assembly method of the device for measuring the temperature of steel pipe port inner wall

[0050] Combined Figures 1 to 19As shown, first, a piece of the bottom plate 1 is arranged horizontally, then the second body 301 of a second support 3 is arranged on the upper end face of the bottom plate 1, the four third through holes 303 of the second support 3 and the four first screw holes 101 of the bottom plate 1 are aligned, then the four screws 9 are inserted through the four third through holes 303 and screwed into the four first screw holes 101, so that the second support 3 and the bottom plate 1 are assembled;

[0051] Then eight rolling bearings 10 are installed in the eight first recesses 604 of the four fourth supports 6, then two of the fourth supports 6 are positioned forward relative to each other, then another two of the fourth supports 6 are positioned backward relative to each other, then the eight bearing segments 503 of the four third supports 5 are respectively inserted into the eight rolling bearings 10, so that the four fourth supports 6, the eight rolling bearings 10 and the four third supports 5 are assembled;

[0052] Then the two fourth bodies 601 of the two backward fourth supports 6 are arranged on the front end face of the fourth boss 302 of the second support 3 at the same time, the eight third screw holes 603 of the two fourth supports 6 and the eight fifth through holes 305 of the second support 3 are aligned, then the eight screws 9 are inserted through the eight fifth through holes 305 and screwed into the eight third screw holes 603, so that the two backward fourth supports 6 and the second support 3 are assembled;

[0053] Then eight rolling bearings 10 are installed in the eight second recesses 703 of the four fifth supports 7, then two of the fifth supports 7 are positioned left relative to each other, then another two of the fifth supports 7 are positioned right relative to each other, then the other eight bearing segments 503 of the four third supports 5 are respectively inserted into the eight rolling bearings 10, so that the four fifth supports 7, the eight rolling bearings 10 and the four third supports 5 are assembled;

[0054] Then the two connecting plates 4 are arranged outside the left and right four end faces of the four seventh bosses 702 of the four fifth supports 7 respectively, the sixteen sixth through holes 401 of the two connecting plates 4 and the sixteen fourth screw holes 705 of the four fifth supports 7 are aligned, then the sixteen screws 9 are inserted through the sixteen sixth through holes 401 and screwed into the sixteen fourth screw holes 705, so that the two connecting plates 4 and the four fifth supports 7 are assembled;

[0055] Then four said wheels 11 are arranged in four said through slots 206 of said first support 2, and the four said wheel shaft holes of four said wheels 11 are aligned with eight said second through holes 207 of said first support 2, and then four said axles 12 are arranged in the aligned through holes, so that said first support 2 and four said wheels 11 are assembled into a first support vehicle;

[0056] Then said first support vehicle is arranged on the upper end surface of said bottom plate 1, and then two said fourth supports 6 are arranged on the rear end surface of said first support 2, and eight said third screw holes 603 of two said fourth supports 6 are aligned with eight said first through holes 205 of said first support 2, and then eight said screws 9 are arranged through eight said first through holes 205 and screwed into eight said third screw holes 603, and finally a sixth body 801 of said temperature measuring rod 8 is screwed into said second screw hole 208 of said first support 2, so that the whole device is assembled and can be put into use.

[0057] The setting principle of the third support swing direction of the device for measuring the inner wall temperature of the steel pipe port

[0058] Combined Figure 1 And Figure 4 As shown in the top view structural schematic diagram of the device, in order to facilitate description, four said third supports 5 are defined as ①, ②, ③ and ④, respectively, because the eight bearing sections 503 of four said third supports 5 located in eight said eighth through holes 704 of four said fifth supports 7 not only change position in the front-rear direction, but also change position in the left-right direction, therefore, the eight said bearing sections 503 located in eight said eighth through holes 704 are all driven shafts; in contrast, because the other eight bearing sections 503 located in eight said seventh through holes 605 of four said fourth supports 6 only change position in the front-rear direction, but do not change position in the left-right direction, therefore, the other eight said bearing sections 503 located in eight said seventh through holes 605 are all driving shafts, and are defined as O;

[0059] As shown in the top view structural schematic diagram of the device, in order to facilitate description, four said third supports 5 are defined as ①, ②, ③ and ④, respectively, because the eight bearing sections 503 of four said third supports 5 located in eight said eighth through holes 704 of four said fifth supports 7 not only change position in the front-rear direction, but also change position in the left-right direction, therefore, the eight said bearing sections 503 located in eight said eighth through holes 704 are all driven shafts; in contrast, because the other eight bearing sections 503 located in eight said seventh through holes 605 of four said fourth supports 6 only change position in the front-rear direction, but do not change position in the left-right direction, therefore, the other eight said bearing sections 503 located in eight said seventh through holes 605 are all driving shafts, and are defined as O; Figure 1 As shown in the top view structural schematic diagram of the device, in order to facilitate description, four said third supports 5 are defined as ①, ②, ③ and ④, respectively, because the eight bearing sections 503 of four said third supports 5 located in eight said eighth through holes 704 of four said fifth supports 7 not only change position in the front-rear direction, but also change position in the left-right direction, therefore, the eight said bearing sections 503 located in eight said eighth through holes 704 are all driven shafts; in contrast, because the other eight bearing sections 503 located in eight said seventh through holes 605 of four said fourth supports 6 only change position in the front-rear direction, but do not change position in the left-right direction, therefore, the other eight said bearing sections 503 located in eight said seventh through holes 605 are all driving shafts, and are defined as O; Figure 20 As shown in the top view structural schematic diagram of the device, in order to facilitate description, four said third supports 5 are defined as ①, ②, ③ and ④, respectively, because the eight bearing sections 503 of four said third supports 5 located in eight said eighth through holes 704 of four said fifth supports 7 not only change position in the front-rear direction, but also change position in the left-right direction, therefore, the eight said bearing sections 503 located in eight said eighth through holes 704 are all driven shafts; in contrast, because the other eight bearing sections 503 located in eight said seventh through holes 605 of four said fourth supports 6 only change position in the front-rear direction, but do not change position in the left-right direction, therefore, the other eight said bearing sections 503 located in eight said seventh through holes 605 are all driving shafts, and are defined as O; Figure 4 As shown in the top view structural schematic diagram of the device, in order to facilitate description, four said third supports 5 are defined as ①, ②, ③ and ④, respectively, because the eight bearing sections 503 of four said third supports 5 located in eight said eighth through holes 704 of four said fifth supports 7 not only change position in the front-rear direction, but also change position in the left-right direction, therefore, the eight said bearing sections 503 located in eight said eighth through holes 704 are all driven shafts; in contrast, because the other eight bearing sections 503 located in eight said seventh through holes 605 of four said fourth supports 6 only change position in the front-rear direction, but do not change position in the left-right direction, therefore, the other eight said bearing sections 503 located in eight said seventh through holes 605 are all driving shafts, and are defined as O;

[0060] As Figure 4 shown, assuming that the four fifth bosses 502 of the four third supports 5 are arranged front-to-back initially, after simplification, as Figure 21 shown, along the four driving shafts O, the ① and the ③ simultaneously swing 90 degrees in the clockwise direction, and the ② and the ④ simultaneously swing 90 degrees in the counterclockwise direction, the four fifth bosses 502 of the four third supports 5 are arranged left-to-right, as Figure 1 shown, the swing direction of the four third supports 5 can be defined as reverse.

[0061] The working principle of the device for measuring the temperature of the inner wall of the port of a steel pipe

[0062] As Figure 1 and Figure 4 shown, in order to facilitate description, the two bearing segments 503 inside the two seventh through holes 605 of the front fourth support 6 can be defined as A and B, the two bearing segments 503 inside the two eighth through holes 704 of the right fifth support 7 can be defined as C and D, the two bearing segments 503 inside the two seventh through holes 605 of the rear fourth support 6 can be defined as E and F, and the two bearing segments 503 inside the two eighth through holes 704 of the left fifth support 7 can be defined as G and H, sequentially connecting A, B, C, D, E, F, G and H can obtain an octagonal structure ABCDEFGH; the midpoint of the AB side is set as M, the midpoint of the EF side is set as N, and M and N are connected;

[0063] As Figure 1 shown, assuming that the four fifth bosses 502 of the four third supports 5 are arranged left-to-right initially, at this time, the four points H, A, B and C are collinear, that is, the three sides HA, AB and BC can be combined into a side HC; similarly, the four points D, E, F and G are collinear, that is, the three sides DE, EF and FG can be combined into a side DG; the octagonal structure ABCDEFGH can be simplified into a rectangular structure HCDG, it is not difficult to prove that the rectangular structure MCDN and the rectangular structure MHGN are congruent, MN is perpendicular to and bisects the AB side, MN is perpendicular to and bisects the EF side, that is, MN is the axis of symmetry of the rectangular structure HCDG, at this time, the temperature measuring rod 8 is farthest from the port of the steel pipe 13 with high temperature, after simplification, as Figure 22 shown;

[0064] As Figure 4As shown, assuming that the four fifth bosses 502 of the four third supports 5 are arranged front and back at the initial time, at this time, the four points B, C, D and E are collinear, that is, the three edges BC, CD and DE can be combined into an edge BE; similarly, the four points F, G, H and A are collinear, that is, the three edges FG, GH and HA can be combined into an edge FA; the octagonal structure ABCDEGH can be simplified into a rectangular structure ABEF, it is not difficult to prove that the rectangular structure MBEN and the rectangular structure MAFN are congruent, MN is perpendicular to and bisects the AB edge, MN is perpendicular to and bisects the EF edge, that is, MN is the axis of symmetry of the rectangular structure ABEF, at this time, the temperature measuring rod 8 is closest to the port of the high-temperature steel pipe 13, and after simplification, as shown in Figure 23 As shown.

[0065] The use method of the device for measuring the temperature of the inner wall of the port of a steel pipe

[0066] Assuming that the four fifth bosses 502 of the four third supports 5 are arranged left and right at the initial time, first, the device is arranged horizontally on the side of the water quenching unit, to ensure that the four fifth bosses 502 of the four third supports 5 are arranged front and back, and the temperature measuring rod 8 can be inserted into the port of the steel pipe 13 for several seconds, then a temperature measuring rod 8 is screwed into the second screw hole 208 of the first support 2, as shown in Figure 1 When the high-temperature steel pipe 13 just stays at the predetermined position, the four third supports 5 are rotated forward by 90 degrees at the same time, so that the four fifth bosses 502 of the four third supports 5 are arranged front and back, at the same time, the first support vehicle moves horizontally forward correspondingly, at this time, the eighth boss 802 of the temperature measuring rod 8 can be partially inserted into the port of the steel pipe 13 to measure the temperature at a close distance, as shown in Figure 4 As shown.

[0067] Supplementary explanation: the device for measuring the temperature of the inner wall of the port of a steel pipe provided by the utility model adopts a symmetrical structure for design, first, a plurality of specifications of the device should be designed and manufactured according to the diameter specification and the setting height of the steel pipe 13; the predetermined position refers to the axis of the steel pipe 13 should coincide with the axis of the temperature measuring rod 8, and the eighth boss 802 of the temperature measuring rod 8 can be partially inserted into the port of the steel pipe 13 when the four fifth bosses 502 of the four third supports 5 are arranged front and back, that is, the temperature measuring rod 8 has the best measurement position, at this time, the position of the steel pipe 13 is the predetermined position.

[0068] As can be seen from the embodiments, the device for measuring the temperature of the inner wall of the port of a steel pipe provided by the utility model can realize close-range measurement of the temperature of the inner wall of the port of a steel pipe, and the device has the characteristics of low manufacturing cost, simple operation and good use effect.

[0069] It should be pointed out finally that the above only describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application 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 replacements to some technical features.

Claims

1. A device for measuring the temperature of the inner wall of the end of a steel pipe, characterized in that, The device for measuring the inner wall temperature of the steel pipe port comprises a bottom plate (1), two connecting plates (4), a first support (2), a second support (3), four third supports (5), four fourth supports (6), four fifth supports (7), a temperature measuring rod (8), thirty-six screws (9), sixteen rolling bearings (10), four wheels (11) and four axles (12), wherein: The first support (2) is connected by a first body (201), a first boss (202), eight second bosses (203) and a third boss (204), the first body (201) and the first boss (202) are both symmetric structures in the shape of a cuboid, the first boss (202) is located on the upper end face of the first body (201), eight second bosses (203) are divided into four groups and are located on the lower end face of the first body (201), and the third boss (204) is located on the front end face of the first boss (202); the rear end face of the first boss (202) is symmetrically provided with two groups of eight first through holes (205) in the shape of a cylinder, the screws (9) are arranged in the first through holes (205); the vertical section of the second boss (203) is a symmetric structure in the shape of an isosceles trapezoid, a through slot (206) in the shape of an isosceles trapezoid can be formed between two second bosses (203) in each group, and the wheels (11) are arranged in the through slot (206); a second through hole (207) in the shape of a cylinder is formed on the left end face of the second boss (203), and the axle (12) is arranged in the second through hole (207); the third boss (204) is a symmetric structure in the shape of a cylinder, a second screw hole (208) is formed on the axis of the third boss (204), the sixth body (801) of the temperature measuring rod (8) is screwed into the second screw hole (208), and the second screw hole (208) is also used for arranging a data line and penetrating the first boss (202); The second support (3) is connected by a second body (301) and a fourth boss (302), the second body (301) and the fourth boss (302) are both symmetric structures in the shape of a cuboid, the fourth boss (302) is located on the upper end face of the second body (301), four third through holes (303) in the shape of a cylinder are symmetrically formed on the upper end face of the second body (301), and the screws (9) are arranged in the third through holes (303); a fourth through hole (304) in the shape of a cylinder is formed on the middle part of the rear end face of the fourth boss (302), and the fourth through hole (304) is used for arranging a data line; two groups of eight fifth through holes (305) in the shape of a cylinder are symmetrically formed on the rear end face of the fourth boss (302), and the screws (9) are arranged in the fifth through holes (305); The third support (5) is connected by two third bodies (501), a fifth boss (502) and four bearing segments (503), the third body (501) and the fifth boss (502) are both cuboid symmetric structures, two third bodies (501) are oppositely arranged, the fifth boss (502) is located between the two third bodies (501), and four bearing segments (503) are oppositely arranged and located at the upper and lower four end faces of the two third bodies (501) respectively; the bearing segment (503) is a cylindrical symmetric structure for penetrating the rolling bearing (10); The fourth support (6) is connected by a fourth body (601) and two sixth bosses (602), the fourth body (601) and the sixth boss (602) are both cuboid symmetric structures, two sixth bosses (602) are oppositely arranged and located at the rear end face of the fourth body (601) at the same time; the rear end face of the fourth body (601) is symmetrically provided with four third screw holes (603), and the third screw hole (603) is screwed with the screw (9); a cylindrical first recess (604) is formed in the middle part of the lower end face of the sixth boss (602), and the rolling bearing (10) is penetrated in the first recess (604); a cylindrical seventh through hole (605) is formed in the axis part of the first recess (604), and the bearing segment (503) of the third support (5) is penetrated in the seventh through hole (605); The fifth support (7) is connected by a fifth body (701) and a seventh boss (702), the fifth body (701) and the seventh boss (702) are both cuboid symmetric structures, and the seventh boss (702) is located at the left end face of the fifth body (701); two cylindrical second recesses (703) are symmetrically formed in the upper end face of the fifth body (701), and the rolling bearing (10) is penetrated in the second recess (703); a cylindrical eighth through hole (704) is formed in the axis part of the second recess (703), and the bearing segment (503) of the third support (5) is penetrated in the eighth through hole (704); four fourth screw holes (705) are symmetrically formed in the right end face of the seventh boss (702), and the fourth screw hole (705) is screwed with the screw (9).

2. The apparatus for measuring the temperature of the inner wall of the end of a steel pipe according to claim 1, characterized by The bottom plate (1) is a cuboid symmetric structure, and four first screw holes (101) are symmetrically formed in the rear half part of the upper end face of the bottom plate (1), and the first screw hole (101) is screwed with the screw (9).

3. The apparatus for measuring the temperature of the inner wall of the end of a steel pipe according to claim 1, wherein The connecting plate (4) is a cuboid symmetric structure, and two groups of eight cylindrical sixth through holes (401) are symmetrically formed in the left end face of the connecting plate (4), and the sixth through hole (401) is penetrated with the screw (9).

4. 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 stick (8) is composed of a coaxial sixth body (801) and an eighth boss (802), the sixth body (801) and the eighth boss (802) are both cylindrical symmetric structures, the eighth boss (802) is located at the front end surface of the sixth body (801); the side surface of the sixth body (801) is provided with threads for screwing the second screw hole (208) of the first support (2); the sixth body (801) is provided with a wiring terminal, and the eighth boss (802) is provided with a thermocouple.

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