CN211121646U - Temperature detection device for steel pipe in preheating furnace - Google Patents
Temperature detection device for steel pipe in preheating furnace Download PDFInfo
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- CN211121646U CN211121646U CN201921731496.4U CN201921731496U CN211121646U CN 211121646 U CN211121646 U CN 211121646U CN 201921731496 U CN201921731496 U CN 201921731496U CN 211121646 U CN211121646 U CN 211121646U
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Abstract
The utility model relates to the field of heat treatment, in particular to a temperature detection device for a steel pipe in a preheating furnace, which comprises a temperature sensor, a slip ring and a towing mechanism; the temperature sensor is arranged in the steel pipe and is in contact with the inner wall of the steel pipe, so that the temperature sensor can directly obtain the real-time temperature of the steel pipe in the heating process; the temperature sensor is difficult to obtain infrared light emitted by hot components in the preheating furnace, namely the temperature sensor is difficult to exchange heat with the hot components in the preheating furnace, and the interference of the hot components in the preheating furnace is reduced. The problem that in the prior art, after the steel pipe is heated in the preheating furnace, an infrared temperature measuring gun is usually adopted to monitor the temperature of the steel pipe; however, the infrared temperature measuring gun is affected by a specific use environment, and infrared light obtained by the infrared temperature measuring gun comprises infrared light emitted by the steel pipe and infrared light emitted by a hot component in the preheating furnace, so that the temperature detection result of the steel pipe is inaccurate.
Description
Technical Field
The utility model relates to a heat treatment field specifically is a temperature-detecting device of steel pipe in preheater.
Background
In the process of heat treatment of the steel pipe, heating the steel pipe in a preheating furnace to a preset temperature interval according to process requirements; if the actual heating temperature of the steel pipe is lower than the preset temperature range, the steel pipe is difficult to meet the quality requirement in the subsequent heating process; if the steel pipe exceeds the preset temperature interval, the energy is wasted. Therefore, the real-time detection of the temperature is very important in the heat treatment process of the steel pipe.
In the prior art, after a steel pipe is heated in a preheating furnace, an infrared temperature measuring gun is usually adopted to monitor the temperature of the steel pipe; however, the infrared temperature measuring gun is affected by a specific use environment, and infrared light obtained by the infrared temperature measuring gun comprises infrared light emitted by the steel pipe and infrared light emitted by a hot component in the preheating furnace, so that the temperature detection result of the steel pipe is inaccurate.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that in the prior art, after a steel pipe is heated in a preheating furnace, an infrared temperature measuring gun is usually adopted to monitor the temperature of the steel pipe; however, the infrared temperature measuring gun is influenced by specific use environment, and the infrared light obtained by the infrared temperature measuring gun comprises infrared light emitted by the steel pipe and infrared light emitted by a heat component in the preheating furnace, so that the technical problem that the temperature detection result of the steel pipe is inaccurate is solved, and the utility model provides a temperature detection device for the steel pipe in the preheating furnace.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to one aspect of the utility model, a temperature detection device for a steel pipe in a preheating furnace is provided, which comprises a temperature sensor, a slip ring and a towing mechanism; the slip ring is provided with a rotating contact ring and a fixed contact, and the rotating contact ring can rotate and is in sliding connection with the fixed contact; the temperature sensor is electrically connected with the fixed contact, the temperature sensor and the slip ring are respectively arranged in the steel pipe, and the temperature sensor is contacted with the inner wall of the steel pipe; the rotating contact ring is connected to one end of the extension cable; the streamer mechanism is disposed outside the steel tube, and a portion of the extended cable is disposed within the streamer mechanism.
Furthermore, the device also comprises a movable bracket; the temperature sensor and the slip ring are respectively arranged in the steel pipe through the movable bracket; the temperature sensor is detachably contacted with the inner wall of the steel pipe through the movable support.
Further, the movable support comprises at least two supporting parts, and any one of the supporting parts is respectively contacted with the inner wall of the steel pipe; the temperature sensor is detachably connected with one of the supporting parts.
Furthermore, the movable support is a rod-shaped support, the two ends of the rod-shaped support are respectively provided with the supporting parts, the two ends of the rod-shaped support are telescopically and movably connected, and the temperature sensor is detachably arranged at one end of the rod-shaped support; or the movable support is a Y-shaped support, the three ends of the Y-shaped support are respectively the supporting parts, one end of the Y-shaped support is flexibly connected with the other two ends in a telescopic manner, and the temperature sensor is detachably arranged at one end of the Y-shaped support; or the movable support is a cross-shaped support, the four ends of the cross-shaped support are respectively provided with the supporting parts, two ends and the other two ends of the cross-shaped support are in telescopic movable connection, and the temperature sensor is detachably arranged at one end of the cross-shaped support.
Furthermore, a movable connecting piece is arranged on the movable support, and the movable connecting piece is detachably and movably connected with the movable support; the slip ring is detachably arranged on the movable connecting piece, the fixed contact is in a fixed state relative to the movable support, and the rotating contact ring is in a rotatable state relative to the movable support.
The slip ring is detachably arranged on the mounting plate; the mounting plate is connected with the movable connecting piece through a bolt, or the mounting plate is connected with the movable connecting piece through a clamping mode.
Furthermore, the rotary touch ring device further comprises a heavy hammer, wherein one end of the heavy hammer is a hammer part, the other end of the heavy hammer is a connecting part, and the connecting part is detachably connected with the rotary touch ring.
Further, the towing mechanism comprises a trolley and a towing chain; the trolley and the drag chain are respectively arranged in the horizontal direction, the trolley is arranged above the top of the drag chain, the moving direction of the trolley is the same as the extending direction of the drag chain, and the bottom end of the trolley spans over one part of the drag chain; one end of the drag chain is detachably arranged at the top end of the trolley.
Further, the device also comprises a display mechanism; the other end of the extension cable is electrically connected with the display mechanism; and the output electric signal of the temperature sensor is transmitted to the display mechanism through the slip ring and the extension cable in sequence.
Furthermore, the extension cable comprises a cable core, an insulating layer and a heat insulating layer, wherein the insulating layer is tightly sleeved on the cable core, and the heat insulating layer is sleeved outside the insulating layer.
The technical scheme has the following advantages or beneficial effects:
the utility model provides a temperature detection device of steel pipe in preheater adopts the scheme that the temperature sensor is directly contacted on the inner wall of the steel pipe to obtain the temperature of the steel pipe, and the temperature sensor is arranged in the steel pipe and is contacted with the inner wall of the steel pipe, so that the temperature sensor can directly obtain the real-time temperature of the steel pipe in the heating process; in addition, the temperature sensor is difficult to obtain infrared light emitted by the hot components in the preheating furnace, namely the temperature sensor is difficult to exchange heat with the hot components in the preheating furnace, and the interference of the hot components in the preheating furnace is reduced. The problem that in the prior art, after the steel pipe is heated in the preheating furnace, an infrared temperature measuring gun is usually adopted to monitor the temperature of the steel pipe; however, the infrared temperature measuring gun is affected by a specific use environment, and infrared light obtained by the infrared temperature measuring gun comprises infrared light emitted by the steel pipe and infrared light emitted by a hot component in the preheating furnace, so that the temperature detection result of the steel pipe is inaccurate.
Drawings
Fig. 1 is a schematic structural view of a temperature detection device for a steel tube in a preheating furnace according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a movable support according to an embodiment of the present invention;
fig. 3 is a schematic view of a split structure of a movable bracket according to an embodiment of the present invention;
fig. 4 is a schematic view of a split structure of the mounting plate, the slip ring and the weight according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a temperature sensor according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an extension cable according to an embodiment of the present invention.
Detailed Description
In order to solve the problem that in the prior art, after a steel pipe is heated in a preheating furnace, an infrared temperature measuring gun is usually adopted to monitor the temperature of the steel pipe; however, the infrared temperature measuring gun is influenced by specific use environment, and the infrared light obtained by the infrared temperature measuring gun comprises infrared light emitted by the steel pipe and infrared light emitted by a heat component in the preheating furnace, so that the technical problem that the temperature detection result of the steel pipe is inaccurate is solved, and the utility model provides a temperature detection device for the steel pipe in the preheating furnace.
Referring to fig. 1 to 5, a temperature detection device for a steel pipe in a preheating furnace comprises a temperature sensor 1, a slip ring 2 and a towing mechanism 3; the slip ring 2 is provided with a rotating contact ring and a fixed contact, and the rotating contact ring can rotate and is in sliding connection with the fixed contact; the temperature sensor 1 is electrically connected with the fixed contact, the temperature sensor 1 and the slip ring 2 are respectively arranged in the steel pipe, and the temperature sensor 1 is contacted with the inner wall of the steel pipe; the rotating contact ring is connected with one end of the extension cable 4; the streamer mechanism 3 is disposed outside the steel pipe, and a portion of the extension cable 4 is disposed within the streamer mechanism 3.
Wherein, temperature sensor 1 sets up in the inside of steel pipe to make temperature sensor 1 and steel pipe can be heated in the preheater simultaneously. The temperature of the steel pipe is raised by absorbing the heat of the preheating furnace, the temperature sensor 1 detects the temperature of the steel pipe in real time, and the temperature electric signal of the steel pipe is output to the outside of the steel pipe through the slip ring 2 and the extension cable 4 on the slip ring 2.
It should be understood that the temperature sensor 1 may employ, for example: temperature measuring elements such as a thermocouple, a thermal resistor' and the like, and the temperature sensor 1 should be in direct contact with the steel pipe; in the solution of the present embodiment, since the temperature sensor 1 is disposed inside the steel pipe, the temperature sensor 1 should be disposed on the inner wall of the steel pipe in direct contact, so that the heat of the steel pipe can be transferred to the temperature sensor 1 by means of heat transfer.
In the actual process of heating the steel tube, the actual motion state of the steel tube relative to the preheating furnace includes, but is not limited to, the following specific forms:
when the steel pipe is heated in the preheating furnace, according to an actually adopted heating process and a matching device of the preheating furnace, the steel pipe is heated in the preheating furnace in a static mode relative to the preheating furnace or in a dynamic mode relative to the preheating furnace; on the basis that the steel pipe is dynamically heated relative to the preheating furnace, the steel pipe body has a horizontal moving state relative to the preheating furnace, or the steel pipe body has both a horizontal moving state and a horizontal rolling state relative to the preheating furnace.
If one of the heating processes and a matching device of the preheating furnace are adopted, so that the steel pipe is heated in a static mode relative to the preheating furnace, the temperature sensor 1 can be simply fixed on the inner wall of the steel pipe; however, if it is considered that the steel pipe is heated in a dynamic manner with respect to the preheating furnace, and particularly, the steel pipe has both a horizontal movement state and a horizontal rolling state with respect to the preheating furnace, the temperature sensor 1 inevitably causes twisting of the wire when the temperature sensor 1 is disposed in the steel pipe in the rolling state. It should be understood that the ' wire ' in the ' torsion of the wire inevitably occurs in the temperature sensor 1 ' means ' for example: the lead wires are directly connected with temperature measuring elements such as a thermocouple, a thermal resistor and the like; if a thermocouple is used, the 'wires' are wires of the thermocouple, and if a thermal resistor is used, the 'wires' are two or three or four leads connected to the thermal resistor.
Therefore, in order to avoid the negative situation that the wire of the temperature sensor 1 is twisted, even after the wire is excessively twisted, the wire is broken or the temperature sensor 1 is separated from the steel pipe, the slip ring 2 is adopted as an important component for avoiding the twisting of the wire in the embodiment.
The slip ring 2 is a rotary communicating component which is provided with a rotary contact ring and a fixed contact, and the fixed contact is arranged on the rotary contact ring; when the rotating contact ring rotates, the fixed contact keeps static, and the fixed contact and the rotating contact ring form a friction contact state, so that the rotating contact ring and the fixed contact are connected in real time.
In the present embodiment, the wires of the temperature sensor 1 are connected to the fixed contacts of the slip ring 2, so that the temperature sensor 1 and the wires of the temperature sensor 1 are kept in a stationary state with respect to the fixed contacts of the slip ring 2; when the steel pipe is in a horizontal rolling state, the temperature sensor 1, the lead of the temperature sensor 1 and the slip ring 2 roll together along with the steel pipe, and the lead of the temperature sensor 1 keeps a static state relative to the fixed contact of the slip ring 2, so that the phenomenon that the lead of the temperature sensor 1 is twisted is avoided.
The temperature sensor 1 is arranged in the steel pipe, so that the electric signal sent by the temperature sensor 1 needs to be output to a display mechanism positioned outside the steel pipe and outside the preheating furnace through the towing mechanism 3, and therefore, workers can obtain the real-time temperature of the steel pipe conveniently.
The motion state of the streamer mechanism 3 should be consistent with the motion state of the steel pipe; if the steel pipe is heated in a preheating furnace in a static state, the towing mechanism 3 should be in a static state relative to the preheating furnace; if the steel pipe is heated dynamically in the preheating furnace, the streamer mechanism 3 should be dynamic with respect to the preheating furnace. In this embodiment, one end of the extension cable 4 is connected with the rotating contact ring of the sliding ring 2, and the body of the extension cable 4 is arranged in the towing mechanism 3, so that the extension cable 4 can be protected by the towing mechanism 3, and the situation that the extension cable 4 is damaged due to the negative phenomena of low track and the like in the motion process of the extension cable 4 is avoided.
If the temperature detection device for the steel pipe in the preheating furnace in the embodiment is practically applied to one of the heating process and the matching device of the preheating furnace, so that the steel pipe is statically heated relative to the preheating furnace, a temperature electric signal sent by the temperature sensor 1 sequentially passes through a lead of the temperature sensor 1, a fixed contact and a rotating contact ring of the slip ring 2 and the extension cable 4 and is output to the display mechanism; at this time, the temperature sensor 1 is used for collecting heat of the steel pipe and obtaining a temperature electric signal, the lead of the temperature sensor 1, the slip ring 2 and the extension cable 4 are used together as a 'signal transmission' component, and the towing mechanism 3 is used for protecting the extension cable 4.
If the temperature detection device for the steel tube in the preheating furnace in the embodiment is practically applied to another heating process and a matching device of the preheating furnace, so that the steel tube is dynamically heated relative to the preheating furnace, the following two conditions are provided: A. when the steel pipe only has a horizontal movement state relative to the preheating furnace, a temperature electric signal sent by the temperature sensor 1 is sequentially output to the display mechanism through a lead of the temperature sensor 1, a fixed contact and a rotating contact ring of the slip ring 2 and the extension cable 4; at this moment, the temperature sensor 1 is used for acquiring heat of the steel pipe and obtaining a temperature electric signal, a lead of the temperature sensor 1, the slip ring 2 and the extension cable 4 are used as 'signal transmission' components together, the towing mechanism 3 is used for protecting the extension cable 4, meanwhile, the towing mechanism 3 can also keep moving in the same direction relative to the steel pipe, and the towing mechanism 3 can prevent the extension cable 4 from separating from the towing mechanism 3 and also can prevent the extension cable 4 from separating from the slip ring 2 or the temperature sensor 1 in the moving process. B. When the steel pipe has a horizontal moving state and a horizontal rolling state relative to the preheating furnace, a temperature electric signal sent by the temperature sensor 1 is output to the display mechanism through a lead of the temperature sensor 1, a fixed contact and a rotating contact ring of the slip ring 2 and the extension cable 4 in sequence; at the moment, the temperature sensor 1 is used for collecting the heat of the steel pipe and obtaining a temperature electric signal; the wires of the temperature sensor 1, the slip ring 2 and the extension cable 4 together act as 'signal transmission' components, wherein the fixed contacts of the slip ring 2 are held stationary relative to the steel pipe to avoid twisting of the wires of the temperature sensor 1, and the rotating contact ring of the slip ring 2 is held rotating relative to the steel pipe, but the rotating contact ring of the slip ring 2 is held stationary or relatively stationary relative to one end of the streamer mechanism 3 to avoid twisting of the extension cable 4; the rotation potential energy of the steel pipe in the rotation process is offset by the relative rotation of the rotating contact ring and the fixed contact of the slip ring 2; the towing mechanism 3 is used for protecting the extended cables 4, meanwhile, the towing mechanism 3 can also keep moving in the same direction relative to the steel pipe, and the towing mechanism 3 can prevent the extended cables 4 from separating from the towing mechanism 3 and can also prevent the extended cables 4 from separating relative to the slip ring 2 or the temperature sensor 1 during moving.
The temperature sensor is arranged in the steel pipe and is in contact with the inner wall of the steel pipe, so that the temperature sensor can directly obtain the real-time temperature of the steel pipe in the heating process; in addition, the temperature sensor is difficult to obtain infrared light emitted by the hot components in the preheating furnace, namely the temperature sensor is difficult to exchange heat with the hot components in the preheating furnace, and the interference of the hot components in the preheating furnace is reduced.
Therefore, the temperature detection device for the steel pipe in the preheating furnace provided by the utility model adopts the scheme that the temperature sensor is directly contacted with the inner wall of the steel pipe to obtain the temperature of the steel pipe, so that the problem that the temperature of the steel pipe is usually monitored by an infrared temperature measuring gun after the steel pipe is heated in the preheating furnace in the prior art is solved; however, the infrared temperature measuring gun is affected by a specific use environment, and infrared light obtained by the infrared temperature measuring gun comprises infrared light emitted by the steel pipe and infrared light emitted by a hot component in the preheating furnace, so that the temperature detection result of the steel pipe is inaccurate.
In addition, the utility model provides a temperature-detecting device of steel pipe in preheater, owing to adopted sliding ring 2 to set up in the steel pipe, be the in-process of horizontal rotation state at the steel pipe, temperature sensor 1's wire keeps static for steel pipe and sliding ring 2's fixed contact, and, extension cable 4 keeps static or relative static for sliding ring 2's rotation touches ring and towline mechanism 3, and the rotation potential energy of steel pipe is touched ring and fixed contact's relative rotation by sliding ring 2's rotation and offsets, makes the utility model provides a temperature-detecting device of steel pipe has the temperature of the steel pipe that acquires the rotation heating in real time, avoids temperature sensor 1's wire distortion, the cracked technological effect after serious distortion even.
Further, in addition to the above-described solutions, how to dispose the temperature sensor 1 and the slip ring 2 in the steel pipe becomes a technical problem to be solved.
Referring to fig. 1 and fig. 2, in the present embodiment, a preferable scheme of 'disposing the temperature sensor 1 and the slip ring 2 in the steel pipe' is provided, specifically: the temperature detection device for the steel pipe in the preheating furnace also comprises a movable bracket 5; the temperature sensor 1 and the slip ring 2 are respectively arranged in the steel pipe through a movable bracket 5; the temperature sensor 1 is detachably contacted on the inner wall of the steel pipe through a movable bracket 5.
In some specific heating processes of steel pipes, the inner wall of the steel pipe needs to maintain integrity and smoothness, so the temperature sensor 1 cannot be arranged on the inner wall of the steel pipe by means of drilling or sticking and the like; by arranging the temperature sensor 1 on the movable bracket 5 and the movable bracket 5 being able to 'squeeze' the temperature sensor 1 on the inner wall of the steel pipe, the negative effects of 'arranging the temperature sensor 1 on the inner wall of the steel pipe by means of drilling or gluing' are avoided.
The slip ring 2 is arranged on the movable support 5, a fixed contact of the slip ring 2 is in a fixed connection state with the movable support 5, and a rotating contact ring of the slip ring 2 is in a rotatable movable connection state relative to the movable support 5; when the steel pipe is in a horizontal rolling state relative to the preheating furnace, the steel pipe and the movable support 5 rotate simultaneously, the fixed contact of the sliding ring 2 rotates along with the steel pipe and the movable support 5, and if the rotating contact ring of the sliding ring 2 is subjected to the external force action in the radial direction of the sliding ring 2 at the moment, the rotating contact ring of the sliding ring 2 and the fixed contact of the sliding ring 2 form a rotating friction state. In a simple connection structure of the slip ring 2 and the extension cable 4, a 'pulling force' of the extension cable 4 acting on the rotating contact ring of the slip ring 2 may be one of 'external forces in a radial direction of the slip ring 2'.
Through setting up temperature sensor 1 and sliding ring 2 respectively on movable support 5 to avoided 'setting up temperature sensor 1 on the inner wall of steel pipe through means such as drilling or pasting' the negative effect, effectually solved 'how to set up temperature sensor 1 and sliding ring 2 become the technical problem that needs to solve in the steel pipe'.
Further, the present embodiment provides a preferred movable support 5, which is as follows:
referring to fig. 1 to 3, the movable bracket 5 includes at least two support portions 51, and any one of the support portions 51 is in contact with the inner wall of the steel pipe, respectively;
the temperature sensor 1 and one of the support portions 51 are detachably connected.
It should be understood that the at least two support portions 51 of the movable bracket 5 are only a part of the structure of the movable bracket 5, and the two support portions 51 can be supported in various ways, and when the movable bracket 5 having the at least two support portions 51 is disposed in a steel pipe, any one support portion 51 on the movable bracket 5 can contact the inner wall of the steel pipe along the radial direction of the steel pipe, so as to achieve the fixing effect of the support portion 51 relative to the steel pipe.
The temperature sensor 1 is disposed on one of the supporting portions 51, and when the temperature sensor 1 is disposed on the inner wall of the steel pipe through the movable bracket 5, the movable bracket 5 presses the temperature sensor 1 against the inner wall of the steel pipe through the one of the supporting portions 51', thereby achieving the connection of the temperature sensor 1 with respect to the inner wall of the steel pipe.
In the present embodiment, the following more specific movable brackets 5 are provided, specifically as follows:
the movable support 5 is a rod-shaped support (see fig. 1 to 3), two ends of the rod-shaped support are respectively provided with a supporting part 51, the two ends of the rod-shaped support are telescopically and movably connected, and the temperature sensor 1 is detachably arranged at one end of the rod-shaped support;
or, the movable support 5 is a Y-shaped support (not shown in the figure), three ends of the Y-shaped support are respectively a support part 51, one end of the Y-shaped support is telescopically and movably connected with the other two ends, and the temperature sensor 1 is detachably arranged at one end of the Y-shaped support;
or, the movable support 5 is a cross-shaped support (not shown in the figure), four ends of the cross-shaped support are respectively a supporting part 51, two ends and the other two ends of the cross-shaped support are telescopically and movably connected, and the temperature sensor 1 is detachably arranged at one end of the cross-shaped support.
Wherein, the activity sets up to shaft-like support for movable support 5 is whole to be set up in the steel pipe, and simultaneously, movable support 5's volume and quality are less, and the staff of being convenient for sets up movable support 5 and temperature sensor 1 and sliding ring 2 in the steel pipe, has reduced staff's working strength. The both ends telescopic swing joint of shaft-like support, the length of shaft-like support can be adjusted to the staff, when the length of shaft-like support is less than the length of the internal diameter of steel pipe, can be convenient for the staff with shaft-like support setting in the steel pipe, when same shaft-like support setting was in the steel pipe of different diameters, the staff can adapt to the steel pipe of different diameters through the interval at the both ends of adjustment shaft-like support (the length of shaft-like support promptly) to reduce the instrument cost of enterprise. After the steel pipe is heated, the steel pipe and the support are heated together in the preheating furnace, so that the support has high temperature, workers should wear heat insulation equipment, and use simple tools or special tools to take the rod-shaped support out of the interior of the steel pipe; before taking out, the staff is not hard up the both ends of shaft-like support through simple tool or specialized tool, avoids the inner wall of fish tail steel pipe when dismantling, and after shaft-like support is not hard up for the steel pipe, the staff should take out shaft-like support through simple tool or specialized tool, avoids the shaft-like support that generates heat to scald the staff.
And, the movable bracket 5 is provided as a Y-shaped bracket or a cross-shaped bracket having more supporting portions 51 than the aforementioned bar-shaped bracket, so that the supporting effect is better. The specific use effect and use method of the Y-shaped bracket or the cross-shaped bracket are the same as those of the rod-shaped bracket, and the detailed description is omitted here.
Further, in order to reduce the inevitable wear phenomenon of the slip ring 2 during the operation, the axial line of the slip ring 2 should be set to be coaxial with the central line of the steel pipe as much as possible, in this embodiment, the movable connecting element 52 is additionally provided, and the slip ring 2 is disposed on the movable connecting element 52, so as to realize the structure 'in which the axial line of the slip ring 2 is set to be coaxial with the central line of the steel pipe', which is specifically as follows:
referring to fig. 3, the movable bracket 5 is provided with a movable connecting piece 52, and the movable connecting piece 52 is detachably and movably connected with the movable bracket 5;
the slip ring 2 is detachably disposed on the movable connecting member 52, the fixed contact is in a fixed state with respect to the movable bracket 5, and the rotating contact ring is in a rotatable state with respect to the movable bracket 5.
The movable connecting piece 52 has a fixed state and a movable state relative to the movable support 5, when the movable connecting piece 52 is in the movable state relative to the movable support 5, the slip ring 2 can move relative to the movable support 5 through the movable connecting piece 52, and a worker can adjust the position of the slip ring 2 relative to the movable support 5, so that the 'structure that the axial line of the slip ring 2 is coaxial with the central line of the steel pipe' is realized. Further, the slip ring 2 is fixed to the movable bracket 5 by changing the movable link 52 from the movable state to the fixed state with respect to the movable bracket 5 after the position of the slip ring 2 with respect to the movable bracket 5 is adjusted by a person.
The specific structure of the movable connecting member 52 should be adapted to the specific structure of the movable bracket 5, and the movable connecting member 52 itself may be implemented in various structures. In order to facilitate understanding of those skilled in the art, in the present embodiment, it is preferable to use the rod-shaped bracket as described above as the movable bracket 5, and to use the movable connecting member 52 having a through cavity to form a sliding rod shape with respect to the rod-shaped bracket, and to provide a locking member on the movable connecting member 52 for switching the movable connecting member 52 between the fixed state and the movable state with respect to the movable bracket 5.
Further, in the aforementioned solution with the movable connector 52, the contact area of the slip ring 2 and the movable connector 52 is relatively small, so that it is difficult to fix the slip ring 2 to the movable connector 52. In order to facilitate the arrangement of the slip ring 2 on the movable connection piece 52, it is preferred to provide a mounting plate 6, see fig. 1 or fig. 4, on which mounting plate 6 the slip ring 2 is detachably arranged;
the mounting plate 6 and the movable connector 52 are bolted or the mounting plate 6 and the movable connector 52 are snapped and connected.
The mounting plate 6 can enlarge the contact area with the slip ring 2, so that the slip ring 2 is conveniently arranged on the mounting plate 6; the mounting plate 6 is detachably connected with the movable connecting piece 52, so that the slide ring 2 is fixed on the movable connecting piece 52 through the mounting plate 6. The mounting plate 6 is connected with the movable connecting piece 52 by bolts, so that the structure is simplest and the use is reliable; the mounting plate 6 and the movable connecting piece 52 are clamped and connected, and the mounting or dismounting process between the mounting plate 6 and the movable connecting piece is most convenient.
Further, in all the above solutions, if the temperature detection device for the steel pipe in the preheating furnace is applied to another heating process and a configuration device of the preheating furnace, the steel pipe has a horizontal moving state and a horizontal rolling state with respect to the preheating furnace; when the steel pipe is in a static state, one end of an extension cable 4 connected to a rotating contact ring of the sliding ring 2 is in a horizontal downward state relative to the axis of the sliding ring 2, and at the moment, a certain part of the extension cable 4 is likely to contact with the end part of the steel pipe; if the steel pipe is changed from a static state to a horizontal rolling state or the steel pipe rolls horizontally, the extended cable 4 swings relative to the center line of the steel pipe, so that the contact part of the extended cable 4 and the steel pipe forms swinging friction, and the outer skin of the extended cable 4 is damaged after long-term use. In order to alleviate the swing amplitude of the extension cable 4 and the steel pipe, in this embodiment, a better scheme is provided, which specifically includes:
referring to fig. 1, 2 or 4, the temperature detecting device for the steel tube in the preheating furnace further comprises a weight 7, wherein one end of the weight 7 is a hammer portion, the other end of the weight 7 is a connecting portion, and the connecting portion is detachably connected with the rotating contact ring.
Wherein, the weight 7 points to the ground plane along the vertical direction in the natural state; the weight 7 is arranged on the rotary contact ring of the slip ring 2, when the steel pipe is in the horizontal direction and the axial lead of the rotary contact ring is arranged to be parallel or coincident with the central line of the steel pipe, the rotary contact ring is under the gravity action of the weight 7, and the axial lead of the slip ring 2 forms a right-angle included angle relative to the gravity direction of the weight 7.
When the steel pipe is changed from a static state to a horizontal rolling state, or the steel pipe rolls horizontally, the rotating contact ring of the slip ring 2 is under the action of the gravity of the heavy hammer 7 and the 'pulling force' of the extension cable 4 on the rotating contact ring, so that the rotating contact ring has a swinging trend under the action of the 'pulling force', but in the direction opposite to the swinging direction, the rotating contact ring obtains an acting force opposite to the swinging trend under the action of the gravity of the heavy hammer 7, the swinging trend of the contact ring is reduced, the swinging amplitude of the contact ring is further reduced, and the swinging amplitude of the extension cable 4 is indirectly reduced.
Further, in all of the foregoing embodiments, referring to fig. 1, the streamer mechanism 3 includes a trolley 301 and a tow chain 302; the trolley 301 and the drag chain 302 are respectively arranged in the horizontal direction, the trolley 301 is arranged above the top of the drag chain 302, the moving direction of the trolley 301 is the same as the extending direction of the drag chain 302, and the bottom end of the trolley 301 spans over a part of the drag chain 302; one end of the drag chain 302 is detachably arranged at the top end of the trolley 301.
Wherein, the trolley 301 is used for supporting one end of the drag chain 302 in a vertical direction, so that one end of the drag chain 302 has a certain distance in the vertical direction relative to the rest drag chains 302 positioned below the trolley 301; when the drag chain 302 moves along with the trolley 301, a part of the drag chain 302 at the horizontal side of the trolley 301 continuously moves from the lower part of the trolley 301 to the upper part of the trolley 301 in a bending deformation mode, and the drag chain 302 at the upper part of the trolley 301 is spaced from the drag chain 302 at the lower part of the trolley 301, so that the friction force of the drag chain 302 at the upper part of the trolley 301 relative to the drag chain 302 at the lower part of the trolley 301 is reduced.
The aforementioned extension cable 4 should be disposed inside the tow chain 302 and one end of the extension cable 4 extends out of one end of the tow chain 302 above the trolley 301 so that the extension cable 4 can be connected with the slip ring 2.
Further, the temperature detection device for the steel tube in the preheating furnace in the embodiment further includes a display mechanism (not shown in the figure); the other end of the extension cable 4 is electrically connected with the display mechanism; the output electric signal of the temperature sensor 1 is transmitted to the display mechanism through the slip ring 2 and the extension cable 4 in sequence.
The display mechanism is used for acquiring the output electric signal of the temperature sensor 1, converting and calculating the output electric signal, forming temperature information or temperature parameters in a readable state, and storing, displaying or transmitting or processing the temperature information or temperature parameters in the readable state as automatically controlled parameters.
Further, in all the above solutions, since the temperature sensor 1 and the slip ring 2 are disposed in the steel pipe, and the steel pipe is heated in the preheating furnace, in order to avoid the phenomenon that the extension cable 4 melts at the high temperature of the preheating furnace, it is preferable to dispose the extension cable 4 in the following structure, specifically:
referring to fig. 6, the extended cable 4 includes a cable core 401, an insulating layer 402 and a heat insulating layer 403, wherein the insulating layer 402 is tightly sleeved on the cable core 401, and the heat insulating layer 403 is sleeved outside the insulating layer 402.
By arranging the heat insulation layer 403 along the cable and arranging the heat insulation layer 403 outside the cable core 401 and the insulation layer 402, heat of the preheating furnace can be effectively prevented from being transferred to the insulation layer 402, and the phenomenon that the insulation layer 402 is melted is avoided.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. A temperature detection device for a steel pipe in a preheating furnace is characterized by comprising a temperature sensor, a slip ring and a towing mechanism;
the slip ring is provided with a rotating contact ring and a fixed contact, and the rotating contact ring can rotate and is in sliding connection with the fixed contact;
the temperature sensor is electrically connected with the fixed contact, the temperature sensor and the slip ring are respectively arranged in the steel pipe, and the temperature sensor is contacted with the inner wall of the steel pipe;
the rotating contact ring is connected to one end of the extension cable; the streamer mechanism is disposed outside the steel tube, and a portion of the extended cable is disposed within the streamer mechanism.
2. The apparatus for detecting the temperature of a steel tube in a preheating furnace according to claim 1, further comprising a movable support;
the temperature sensor and the slip ring are respectively arranged in the steel pipe through the movable bracket;
the temperature sensor is detachably contacted with the inner wall of the steel pipe through the movable support.
3. The apparatus for detecting the temperature of a steel tube in a preheating furnace according to claim 2, wherein the movable support comprises at least two support portions, any one of which is in contact with the inner wall of the steel tube;
the temperature sensor is detachably connected with one of the supporting parts.
4. The apparatus according to claim 3, wherein the movable support is a rod-shaped support, the support is provided at each of two ends of the rod-shaped support, the two ends of the rod-shaped support are telescopically and movably connected, and the temperature sensor is detachably provided at one end of the rod-shaped support;
or the movable support is a Y-shaped support, the three ends of the Y-shaped support are respectively the supporting parts, one end of the Y-shaped support is flexibly connected with the other two ends in a telescopic manner, and the temperature sensor is detachably arranged at one end of the Y-shaped support;
or the movable support is a cross-shaped support, the four ends of the cross-shaped support are respectively provided with the supporting parts, two ends and the other two ends of the cross-shaped support are in telescopic movable connection, and the temperature sensor is detachably arranged at one end of the cross-shaped support.
5. The apparatus for detecting the temperature of a steel tube in a preheating furnace according to claim 2, wherein the movable support is provided with a movable connecting member, and the movable connecting member is detachably and movably connected with the movable support;
the slip ring is detachably arranged on the movable connecting piece, the fixed contact is in a fixed state relative to the movable support, and the rotating contact ring is in a rotatable state relative to the movable support.
6. The apparatus for detecting the temperature of a steel tube in a preheating furnace according to claim 5, further comprising a mounting plate on which the slip ring is detachably disposed;
the mounting plate is connected with the movable connecting piece through a bolt, or the mounting plate is connected with the movable connecting piece through a clamping mode.
7. The apparatus for detecting the temperature of a steel tube in a preheating furnace according to any one of claims 1 to 6, further comprising a weight, wherein one end of the weight is a weight portion, and the other end of the weight is a connection portion, and the connection portion is detachably connected to the rotary contact ring.
8. The apparatus for detecting the temperature of a steel tube in a preheating furnace according to claim 7, wherein the cable mechanism comprises a trolley and a drag chain;
the trolley and the drag chain are respectively arranged in the horizontal direction, the trolley is arranged above the top of the drag chain, the moving direction of the trolley is the same as the extending direction of the drag chain, and the bottom end of the trolley spans over one part of the drag chain;
one end of the drag chain is detachably arranged at the top end of the trolley.
9. The apparatus for detecting the temperature of a steel tube in a preheating furnace according to claim 1, further comprising a display mechanism;
the other end of the extension cable is electrically connected with the display mechanism;
and the output electric signal of the temperature sensor is transmitted to the display mechanism through the slip ring and the extension cable in sequence.
10. The temperature detecting device for the steel tubes in the preheating furnace according to claim 1, wherein the extension cable comprises a cable core, an insulating layer and a heat insulating layer, the insulating layer is tightly sleeved on the cable core, and the heat insulating layer is sleeved outside the insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731496.4U CN211121646U (en) | 2019-10-15 | 2019-10-15 | Temperature detection device for steel pipe in preheating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731496.4U CN211121646U (en) | 2019-10-15 | 2019-10-15 | Temperature detection device for steel pipe in preheating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211121646U true CN211121646U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921731496.4U Active CN211121646U (en) | 2019-10-15 | 2019-10-15 | Temperature detection device for steel pipe in preheating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211121646U (en) |
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2019
- 2019-10-15 CN CN201921731496.4U patent/CN211121646U/en active Active
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