CN113194560A - Automatic thrust collar heating device with hot disassembly function and use method - Google Patents

Abstract

The invention discloses an automatic thrust collar heating device with a hot-dismantling function and a using method thereof. According to the invention, the side wall of the heating sleeve is provided with the plurality of reinforcing rings, the heating sleeve is tightly sleeved by the reinforcing rings, the two sides of each reinforcing ring are provided with the corresponding reinforcing devices for adjusting the tightness degree of the reinforcing rings, the reinforcing rings are adjusted to be proper tightness degree by the reinforcing devices, the connection tightness between the heating device and the thrust head is increased, the heating device is effectively prevented from loosening, and the heating effect of the heating device is effectively improved.

Description

Automatic thrust collar heating device with hot disassembly function and use method

Technical Field

The invention relates to the technical field of generators, in particular to an automatic thrust collar heating device with a hot disassembling function and a using method thereof.

Background

The generator thrust collar is a component for mounting the mirror plate and transferring axial force from the main shaft to the thrust bearing mirror plate. When the generator set is disassembled for maintenance, the disassembly of the thrust head is completed by adopting a process of 'manual mechanical cold disassembly', namely, the disassembly is completed by mutually matching relevant professionals such as machinery, hoisting and the like and combining the methods such as 'pulling, jacking and knocking'. The disassembly method is time-consuming, tedious and labor-consuming in process, and has potential safety hazards of personnel injury and equipment injury. At present, the existing better dismounting mode of the thrust collar is 'hot dismounting of an electrical device', namely, the dismounting of the thrust collar is realized by heating the thrust collar.

For example, chinese patent CN206024143U, published 2017, 3, 15, an automatic heating device for a generator thrust collar, which comprises an epoxy sleeve with a built-in heating coil, which can be conveniently sleeved into the generator thrust collar, wherein the outer layer of the epoxy sleeve is fixed to prevent deformation by a non-magnetic conductive metal outer frame to form a cylindrical heating device, and is integrated with the cylindrical heating device, two horizontal supporting plates are symmetrically arranged at the upper end of the epoxy sleeve, and a temperature controller with a temperature control probe, which is matched with a temperature control probe slot hole arranged at the upper end surface of the thrust collar, is arranged on the horizontal supporting plates, and the temperature controller is connected to a power control box; the power supply control box is connected with the heating coil and realizes temperature control type heating; the non-magnetic conductive metal outer framework of the outer layer of the epoxy material sleeve comprises a stainless steel annular support frame at the upper part and the lower part and a stainless steel reinforcing rib in the middle, the heating coil is an induction coil, the induction heating is a two-point temperature measurement and two-point temperature control mode, and the power supply control box is arranged on horizontal supporting plates at two sides through a detachable lifting base at the lower part. But it has the heating device and is connected not closely enough with the thrust collar and thereby influence the problem of heating device heating efficiency, and the heating device has certain not hard up risk of droing, needs the heating device to increase corresponding reinforcing apparatus.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the existing automatic heating device for the thrust collar has the technical problem that the heating efficiency of the heating device is affected because the heating device is not connected with the thrust collar tightly enough. The automatic thrust collar heating device with the hot-dismantling function and the use method can increase the connection tightness between the heating device and the thrust collar and the heating efficiency of the heating device.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a thrust collar automatic heating device with function is torn open to heat, is including being used for the sleeve that heats for generator thrust collar heating, it is connected with the temperature controller to heat the sleeve, the lateral wall that heats the sleeve is equipped with a plurality of reinforcement ring, be equipped with two relative reinforcing apparatus who is used for adjusting reinforcement ring elasticity degree on every reinforcement ring at least. The utility model provides a thrust collar automatic heating device with function is torn open to heat, according to electromagnetic induction principle and skin effect principle, characteristics such as the "eddy current effect" of the cyclic annular magnetic conduction metallic object of rational application "," skin effect "," heat transfer effect "and" thermal expansion ", embolia the thrust collar with the inductance coil among the generator thrust collar automatic heating device in the sleeve that heats, thrust collar main part inside can produce the vortex near the surface during the circular telegram, rethread metal heat transfer characteristic, make the heat slowly evenly disperse inwards along thrust collar axis direction, make the cyclic annular main part of thrust collar heated, inner circle inflation diameter grow, thereby realize the dismantlement of thrust collar to the generator main shaft. Be equipped with a plurality of strengthening ring at the telescopic lateral wall that heats, through the sleeve that heats of strengthening ring cover, both sides on the strengthening ring set up relative reinforcing apparatus who is used for adjusting the degree of strengthening ring elasticity, adjust suitable elasticity with the strengthening ring through reinforcing apparatus, increase heating apparatus and thrust collar and be connected the compactness, prevent effectively that heating apparatus is not hard up, effectively improve heating apparatus's heating effect.

Preferably, each reinforcing device comprises a reinforcing clamp positioned between the reinforcing ring and the side wall of the heating sleeve, the reinforcing clamp is connected with an adjusting device, and each adjusting device is provided with an adjusting pulley for adjusting the tightness degree of the reinforcing clamp. The elasticity that the anchor clamps were pressed from both sides in the remote adjustment of adjusting pulley accessible strop line, the tip of reinforcing clamp is crooked form, and the clip of similar crab pincers, the thin rear end of front end of reinforcing clamp tip is thick, and the mode straining when the reinforcing ring is fastened to the mode fastening ring that stretches into the reinforcing ring inboard with the reinforcing clamp tip gradually at tight in-process to make the reinforcing ring play taut fixed effect.

Preferably, each reinforcing device is provided with a buffer device for protecting the reinforcing device, each buffer device comprises a buffer wheel and a support frame positioned between the buffer wheel and the reinforcing device, and each support frame comprises two support arms and a plurality of buffer springs positioned between the two support arms. The buffer wheel can be by heat-resisting and have elastic material and constitute, the buffer wheel pass through the support frame with the muffjoint that heats, the support frame realizes the function of buffering through a plurality of buffer spring between two support arms.

Preferably, the side wall of the warming sleeve is provided with a mounting groove corresponding to the reinforcing ring. The side wall of the heating sleeve is provided with the mounting groove, so that the positioning and mounting of the reinforcing ring are facilitated, the reinforcing effect is prevented from being influenced by the movement of the reinforcing ring, and the mounting groove can also assist the reinforcing clamp of the reinforcing device to clamp the reinforcing ring.

Preferably, the bottom of the temperature controller is provided with a movable frame for installation and disassembly, the bottom of the movable frame is provided with a connecting groove, and the heating sleeve corresponds to the connecting groove and is provided with a corresponding connecting column. The temperature controller part is installed and detached through the connecting groove and the connecting column.

Preferably, the temperature controller outside is equipped with the protection casing, the protection casing bottom is equipped with the support column, the lateral wall of protection casing is equipped with a plurality of auxiliary connection device. The protection casing is fixed on the adjustable shelf to support column accessible bolted connection's mode, and the protection casing can be used to prevent that the temperature controller from colliding with and shielding electromagnetic interference, can also set up the louvre for preventing the too high protection casing of inside temperature controller temperature.

Preferably, the auxiliary connecting device comprises a connecting ring positioned on the side wall of the protective cover and a connecting part penetrating through the connecting ring, a fixing cap is arranged at one end of the connecting part penetrating through the connecting ring, and the other end of the connecting part is connected with the movable frame through a connecting spring. The auxiliary connecting device can pull the protective cover tightly when the supporting column falls off, for example, the supporting column is connected to fall off due to the loosening and impacting of the temperature controller, so that the protective cover and the temperature controller are prevented from falling, and the grading insurance effect is achieved.

Preferably, the side wall of the protective cover is provided with a movable door. The parameters of the temperature controller can be adjusted by opening the movable door.

The use method of the automatic thrust collar heating device with the hot-dismantling function comprises the following steps:

s1: sleeving a heating device on the outer part of a thrust collar of the generator;

s2: the temperature controller controls the heating device to heat the thrust head;

s3: judging whether the temperature rise speed of the temperature of the thrust collar exceeds 12 ℃ per hour, if so, entering step S4, otherwise, entering step S5;

s4: cutting off the heating power supply and giving out an alarm;

s5: when the temperature of the thrust head rises to 75 ℃, the power supply is automatically cut off, and the heating is stopped;

s6: and detaching and adjusting the thrust collar. When the temperature rising speed of the temperature of the thrust collar is too high, the heating power supply is cut off, and an alarm is given out to prevent the temperature of the thrust collar from being too high and damaging the thrust collar or other electric components due to uncontrollable heating process.

The substantial effects of the invention are as follows: according to the invention, the side wall of the heating sleeve is provided with the plurality of reinforcing rings, the heating sleeve is tightly sleeved by the reinforcing rings, the two sides of each reinforcing ring are provided with the corresponding reinforcing devices for adjusting the tightness degree of the reinforcing rings, the reinforcing rings are adjusted to be proper tightness degree by the reinforcing devices, the connection tightness between the heating device and the thrust head is increased, the heating device is effectively prevented from loosening, and the heating effect of the heating device is effectively improved.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a flowchart illustrating steps performed in this embodiment;

fig. 3 is an electrical control diagram of the device of the present embodiment.

Wherein: 1. the device comprises a heating sleeve, 2, a temperature controller, 3, a protective cover, 4, a reinforcing ring, 5, a reinforcing device, 6, a buffering device, 7, a movable frame, 8 and an auxiliary connecting device.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

The utility model provides a thrust collar automatic heating device with function is torn open to heat, as shown in figure 1, including being used for the sleeve 1 that heats for generator thrust collar heating, heat sleeve 1 and be connected with temperature controller 2, 2 bottoms of temperature controller are equipped with the adjustable shelf 7 that is used for the installation and dismantles, and adjustable shelf 7 bottom is equipped with the spread groove, heats sleeve 1 and corresponds the spread groove position and is equipped with corresponding spliced pole. The temperature controller 2 is mounted and dismounted through the connecting groove and the connecting column. The outside of the temperature controller 2 is provided with a protective cover 3, the bottom of the protective cover 3 is provided with a support column, and the side wall of the protective cover 3 is provided with a plurality of auxiliary connecting devices 8. The protection casing 3 is fixed on the adjustable shelf 7 to support column accessible bolted connection's mode, and the protection casing 3 can be used to prevent that temperature controller 2 from colliding with and shielding electromagnetic interference, can also set up the louvre for preventing the too high protection casing 3 of 2 high temperatures of inside temperature controller. The auxiliary connecting device 8 comprises a connecting ring and a connecting part, the connecting ring is located on the side wall of the protective cover 3, the connecting part penetrates through the connecting ring, a fixing cap is arranged at one end of the connecting part, and the other end of the connecting part is connected with the movable frame 7 through a connecting spring. The auxiliary connecting device 8 can drag the protection cover 3 tightly when the support column drops, for example, the support column is connected to drop due to the loose collision of the temperature controller 2 and the protection cover 3, so that the protection cover 3 and the temperature controller 2 are prevented from dropping, and the grading safety effect is achieved. The side wall of the protective cover 3 is provided with a movable door. The parameters of the thermostat 2 may be adjusted by opening the movable door.

The side wall of the warming sleeve 1 is provided with a plurality of reinforcing rings 4, and each reinforcing ring 4 is at least provided with two opposite reinforcing devices 5 for adjusting the tightness degree of the reinforcing ring 4. Each reinforcing device 5 comprises a reinforcing clamp arranged between the reinforcing ring 4 and the side wall of the heating sleeve 1, the reinforcing clamp is connected with an adjusting device, and each adjusting device is provided with an adjusting pulley for adjusting the tightness degree of the reinforcing clamp. In addition, a temperature sensor can be arranged on the adjusting device, the adjusting pulley can remotely adjust the tightness of the reinforcing clamp through a sliding rope due to the fact that the temperature of the corresponding position of the heating sleeve 1 or the temperature of the reinforcing clamp is detected, the end portion of the reinforcing clamp is bent and is similar to a clamp of crab pincers, the front end of the end portion of the reinforcing clamp is thin, the rear end of the end portion of the reinforcing clamp is thick, the reinforcing ring 4 is tightened while the end portion of the reinforcing clamp gradually extends into the inner side of the reinforcing ring 4 in the clamping process, and therefore the reinforcing ring 4 plays a role in tightening and fixing. All be equipped with the buffer 6 that is used for protecting reinforcing apparatus 5 on every reinforcing apparatus 5, buffer 6 includes the buffering wheel and is located the support frame between buffering wheel and reinforcing apparatus 5, and the support frame includes two support arms and is located a plurality of buffer spring between two support arms. The buffer wheel can be by heat-resisting and have elastic material and constitute, the buffer wheel passes through the support frame and is connected with heating sleeve 1, and the support frame realizes the function of buffering through a plurality of buffer spring between two support arms. The lateral wall of the heating sleeve 1 is provided with a mounting groove corresponding to the position of the reinforcing ring 4. The side wall of the heating sleeve 1 is provided with the mounting groove, so that the positioning and mounting of the reinforcing ring 4 and the reinforcing effect caused by the movement of the reinforcing ring 4 are facilitated, and the mounting groove can also assist the reinforcing clamp of the reinforcing device 5 to clamp the reinforcing ring 4.

The use method of the device comprises the following steps as shown in figure 2:

s1: sleeving a heating device on the outer part of a thrust collar of the generator;

s2: the temperature controller 2 controls the heating device to heat the thrust collar;

s3: judging whether the temperature rise speed of the temperature of the thrust collar exceeds 12 ℃ per hour, if so, entering step S4, otherwise, entering step S5;

s4: cutting off the heating power supply and giving out an alarm;

s5: when the temperature of the thrust head rises to 75 ℃, the power supply is automatically cut off, and the heating is stopped;

s6: and detaching and adjusting the thrust collar. When the temperature rising speed of the temperature of the thrust collar is too high, the heating power supply is cut off, and an alarm is given out to prevent the temperature of the thrust collar from being too high and damaging the thrust collar or other electric components due to uncontrollable heating process.

The conventional manual mechanical cold dismantling method needs 8-10 people to complete the thrust collar, the time consumption is generally 4-5 hours, the actual time consumption is extremely unstable, and the delay is often caused by uncertain factors of equipment individuals; after the heating device is used, the dismounting mode of the thrust head is changed, mechanical cold dismounting is changed into electrical hot dismounting, the whole dismounting process can be easily finished only by 2 electrical workers and 1 mechanical worker, the consumed time is short, the stability is realized, and the dismounting can be finished only in about 1.5 hours.

The assembly parameters and the dimensions of the device main body of the embodiment are determined as follows:

1) the size of the inner wall of the device main body is set according to the size of the shape enlargement of 5mm of the outer wall of the periphery of the thrust head; the plane of the top ring opening is 20mm higher than the thrust head; the epoxy cast inductor cylinder thickness was 40 mm.

2) The annular metal support frame at the bottom of the main body is designed into a bell mouth shape, so that the device can be conveniently sleeved and pulled out. 4 hoisting rings are evenly distributed on the top of the reinforcing rib of the device main body in a surface-distributing manner. When the device is in standing, the control box is arranged at the top of the device main body, the base of the device main body is detachable, the plane of the base is 100mm higher than the top of the cylinder, and the device is made of non-magnetic stainless steel.

3) 4 handles are respectively welded at 1/3 positions of the reinforcing ribs on two opposite sides of the outer wall of the heating device main body from top to bottom; the bottom of the device is an open loop made of non-magnetic stainless steel, the contact part of the device and the thrust collar is polished smoothly, and the thrust collar is convenient to adjust the horizontal position of the thrust collar at a small angle before heating.

The parameters and the sizes of the electrical system of the device of the embodiment are determined again:

1) two temperature sensors are prepared, when the temperature value of any one temperature sensor reaches 75 ℃, the temperature module immediately outputs an action signal to enable the main loop contactor to be opened, and meanwhile, the module immediately collects temperature rise data.

2) When the data temperature rise rate of any sensor exceeds 12 ℃/H, the temperature module sends out an instruction, the heating loop is cut off, and the buzzer in the temperature module sends out an alarm sound.

The device electrical control diagram of the present embodiment is shown in fig. 3:

wherein the main loop is as follows: the device mainly comprises an air switch QF1, a solid-state switch control combination with a current regulation function, a group of heavy-load plugs and a thrust head induction heating coil. It also has a voltmeter and an ammeter which are carried by the main loop.

An electric control loop: controlled by 12V low voltage. The temperature rise speed control system is composed of a low-voltage switch, relays 1KAO and 1KAC, a contactor 1KM, a button and the like, and realizes the control of the temperature rise speed (manual control or full-process automatic control can be freely selected according to working requirements) through instant information feedback of a temperature module combination (a solid-state switch, a recorder, a temperature sensor and the like).

This embodiment is according to electromagnetic induction principle and skin effect principle, characteristics such as reasonable application cyclic annular magnetic conduction metal body "eddy current effect", "skin effect", "heat transfer effect" and "thermal expansion", embolia the thrust collar with the inductance coil among the automatic heating device of generator thrust collar in the sleeve 1, thrust collar main part inside can produce the vortex near the surface during circular telegram, rethread metal heat transfer characteristic, make the heat slowly evenly disperse inwards along thrust collar axis direction, make the cyclic annular main part of thrust collar heated, the expanded diameter grow of inner circle, thereby realize the dismantlement of thrust collar to the generator main shaft. Be equipped with a plurality of reinforcing ring 4 at the lateral wall of sleeve 1 that heats, through reinforcing ring 4 cover sleeve 1 that heats tightly, both sides on reinforcing ring 4 set up relative reinforcing apparatus 5 that is used for adjusting 4 elasticity degrees of reinforcing ring, adjust reinforcing ring 4 to suitable elasticity through reinforcing apparatus 5, increase heating apparatus and thrust collar connection compactness, prevent effectively that heating apparatus is not hard up, effectively improve heating apparatus's heating effect.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims (9)

1. The utility model provides a thrust collar automatic heating device with function is torn open to heat, its characterized in that, is including being used for heating sleeve (1) for generator thrust collar heating, it is connected with temperature controller (2) to heat sleeve (1), the lateral wall of heating sleeve (1) is equipped with a plurality of reinforcement ring (4), be equipped with two relative reinforcing apparatus (5) that are used for adjusting reinforcement ring (4) elasticity degree on every reinforcement ring (4) at least.

2. The automatic thrust collar heating device with the hot-disassembling function according to claim 1, characterized in that each reinforcing device (5) comprises a reinforcing clip located between the reinforcing ring (4) and the side wall of the heating sleeve (1), the reinforcing clip is connected with an adjusting device, and each adjusting device is provided with an adjusting pulley for adjusting the tightness degree of the reinforcing clip.

3. The automatic thrust collar heating device with the hot-disassembling function according to claim 1 or 2, characterized in that each reinforcing device (5) is provided with a buffer device (6) for protecting the reinforcing device (5), the buffer device (6) comprises a buffer wheel and a support frame located between the buffer wheel and the reinforcing device (5), and the support frame comprises two supporting arms and a plurality of buffer springs located between the two supporting arms.

4. The automatic thrust collar heating device with the hot-disassembling function according to claim 3, characterized in that the side wall of the heating sleeve (1) is provided with an installation groove corresponding to the position of the reinforcing ring (4).

5. The automatic thrust collar heating device with the hot-disassembling function according to claim 1, wherein a movable frame (7) for installation and disassembly is arranged at the bottom of the temperature controller (2), a connecting groove is arranged at the bottom of the movable frame (7), and the heating sleeve (1) is provided with a corresponding connecting column corresponding to the connecting groove.

6. The automatic thrust collar heating device with the heat removal function according to claim 1 or 5, wherein a protective cover (3) is arranged outside the temperature controller (2), a support column is arranged at the bottom of the protective cover (3), and a plurality of auxiliary connecting devices (8) are arranged on the side wall of the protective cover (3).

7. The automatic thrust collar heating device with the hot-dismantling function according to claim 6, wherein the auxiliary connecting device (8) comprises a connecting ring located on the side wall of the protective cover (3) and a connecting portion passing through the connecting ring, a fixing cap is arranged at one end of the connecting portion passing through the connecting ring, and the other end of the connecting portion is connected with the movable frame (7) through a connecting spring.

8. The automatic thrust collar heating device with the hot-dismantling function as claimed in claim 6, characterized in that a movable door is provided on the side wall of the protection cover (3).

9. The use method of the automatic thrust collar heating device with the hot-disassembling function is characterized by utilizing the automatic thrust collar heating device with the hot-disassembling function as claimed in any one of claims 1 to 8, and comprising the following steps of:

s1: sleeving a heating device on the outer part of a thrust collar of the generator;

s2: the temperature controller (2) controls the heating device to heat the thrust head;

s3: judging whether the temperature rise speed of the temperature of the thrust collar exceeds 12 ℃ per hour, if so, entering step S4, otherwise, entering step S5;

s4: cutting off the heating power supply and giving out an alarm;

s5: when the temperature of the thrust head rises to 75 ℃, the power supply is automatically cut off, and the heating is stopped;

s6: and detaching and adjusting the thrust collar.

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