KR101010605B1 - Automatic heat treatment apparatus for u-type bending pipe - Google Patents

Abstract

The present invention relates to an automatic heat treatment apparatus for a curved bent pipe, comprising: an apparatus for heat-treating a bending portion of a curved bent pipe used for a heat exchanger of a ship or an industrial facility; A fixed frame, a plurality of rows of chain blocks rotatably arranged on the bottom surface of the fixing frame, in which a bent pipe is seated, and a connecting rod installed to be moved by a horizontal screw bar in the chain block direction; A bracket downwardly protruding from the connecting table on the vertical line of the chain block, a close contact member provided to be moved in a direction orthogonal to the bracket by an operation cylinder fixed to the bracket, a position sensor fixed to a rear connection object of the close contact member, and A loading / unloading unit comprising a clamp and a stopper which opens and closes in the form of a revolving door to one longitudinal side opening of the fixed frame; A processing chamber provided to be spaced apart from the stopper side of the loading / unloading unit, a screw shaft vertically installed inside the processing chamber, an upper electrode and a lower electrode which are coupled to the screw shaft and move in close proximity to each other; An electrode opening / closing cylinder for fastening the upper electrode and the lower electrode to the bending portion of the k-shaped bending pipe, a plurality of injection nozzles installed on the inner wall of the processing chamber to spray cooling air, and a heating temperature of the k-shaped bending pipe or It consists of a heat treatment unit consisting of a temperature sensor installed around the lower electrode to measure the cooling temperature.

According to the present invention, the heating and cooling can be easily and easily performed automatically, so that more efficient heat treatment is possible, and internal oxidation can be prevented to produce a higher-quality curved bent pipe.

벤 bending pipe, heat treatment, heat exchanger, heating, cooling, oxidation

Description

AUTO HEAT TREATMENT APPARATUS FOR BEND BENDING PIPE {AUTOMATIC HEAT TREATMENT APPARATUS FOR U-TYPE BENDING PIPE}

The present invention relates to an automatic heat treatment apparatus for a curved bent pipe, and more particularly, to remove inefficiency of a heat treatment process using a direct resistance heating method, and to fasten and load / unlock electrodes for stabilizing a production process and improving productivity. The present invention relates to an automatic heat treatment apparatus for a curved bent pipe that can be improved to automatically handle a loading operation.

Generally, a curved bending pipe is used for a heat exchanger of a power plant or an industrial facility such as a ship.

Such a curved bending pipe is usually subjected to a heat treatment process for the purpose of stabilizing the physical properties of the bending portion.

The heat treatment of such a curved bending pipe includes an indirect heat treatment method and a direct heat treatment method.

In this case, in the former case, a heating plate is arbitrarily attached to the inside of the furnace to generate electricity by flowing electricity therein, and the heat is indirectly transferred to the U-shaped bending pipe to be treated; In the latter case, the heat treatment is performed by directly heating the electrode in the state of fastening the upper and lower ends of the bent pipe.

However, in the case of the former indirect heat treatment method, the heating takes too much time and the working process is long, so there is an inefficient disadvantage. The direct heat treatment method is mainly used. Since the internal oxidation and the heat treatment system are not easy, processes such as loading / unloading of a bending pipe or fastening of electrodes are dependent on manual labor, which is not only cumbersome but also extremely low in productivity.

For example, as an example of FIG. 1 disclosed in Korean Patent Application Publication No. 2003-0036411, as an example of a direct heat treatment method, an electrode 20 must be directly connected above and below the bend to directly heat the curved bent pipe 10. As described above, the inside of the curved bent pipe 10 is oxidized during heat treatment, and a series of processes of loading and unloading the curved bent pipe 10 for heat treatment are very complicated and cumbersome. It was uncomfortable.

The present invention was created in view of the above-described problems in the prior art, and automatically loaded / unloaded while preventing internal oxidation of the bending pipe during heat treatment of the bending part of the bent pipe used in an industrial heat exchanger. The main problem is to provide an automatic heat treatment apparatus for a B-shaped bending pipe capable of making this possible and ensuring the simplicity of electrode fastening.

The present invention provides a means for achieving the above object, in the apparatus for heat-treating the bending portion of the curved bent pipe used in heat exchangers of ships, industrial facilities; A fixed frame, a plurality of rows of chain blocks rotatably arranged on the bottom surface of the fixing frame, in which a bent pipe is seated, and a connecting rod installed to be moved by a horizontal screw bar in the chain block direction; A bracket downwardly protruding from the connecting table on the vertical line of the chain block, a close contact member provided to be moved in a direction orthogonal to the bracket by an operation cylinder fixed to the bracket, a position sensor fixed to a rear connection object of the close contact member, and A loading / unloading unit comprising a clamp and a stopper which opens and closes in the form of a revolving door to one longitudinal side opening of the fixed frame; A processing chamber provided to be spaced apart from the stopper side of the loading / unloading unit, a screw shaft vertically installed inside the processing chamber, an upper electrode and a lower electrode which are coupled to the screw shaft and move in close proximity to each other; An electrode opening / closing cylinder for fastening the upper electrode and the lower electrode to the bending portion of the k-shaped bending pipe, a plurality of injection nozzles installed on the inner wall of the processing chamber to spray cooling air, and a heating temperature of the k-shaped bending pipe or It provides an automatic heat treatment apparatus for a k-type bending pipe, characterized in that the heat treatment unit consisting of a temperature sensor installed around the lower electrode to measure the cooling temperature.

In this case, the shaping bending pipe is characterized in that the supply pipe is piped so that the inert gas supplied from the gas tank is filled.

In addition, the lower surface of the fixed frame of the loading / unloading unit is characterized in that a plurality of casters are further installed.

In addition, an auxiliary vertical screw bar is further provided on both sides of the opening of the stopper opposing fixing frame of the loading / unloading unit, and the auxiliary vertical screw bar is fixedly coupled to the auxiliary vertical screw bar, and the fixing frame is wide on the fixing plate. The auxiliary connecting rod is fixed in the direction, the auxiliary connecting rod is characterized in that the flow roll for supporting the bent upper side of the curved bent pipe.

In addition, the chain block of the loading / unloading unit is characterized in that it is formed in the form having a 'V' shaped groove.

According to the present invention, the heating and cooling can be easily and easily performed automatically, so that more efficient heat treatment is possible, and internal oxidation can be prevented to produce a higher-quality curved bent pipe.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Figure 2 is a schematic diagram showing the concept of the automatic heat treatment apparatus for the curved bent pipe according to the present invention, Figure 3 is a side view of the automatic heat treatment device for the curved bent pipe according to the present invention, Figure 4 is a curved bending pipe according to the present invention A partial perspective view of an automatic heat treatment apparatus.

The automatic bending heat treatment apparatus for a bent pipe according to the present invention includes a heat treatment unit 100 shown in FIG. 2 and a loading / unloading unit 200 shown in FIGS. 3 and 4.

First, a description will be given of the heat treatment unit 100 shown in FIG.

The heat treatment unit 100 according to the present invention is configured in a form in which a plurality of upper and lower electrodes 130 and 140 of the same type are provided in the processing chamber 110 to simultaneously process a plurality of fin-shaped bending pipes 120. .

At this time, the upper and lower electrodes 130 and 140 are coupled to the screw shaft 150 formed with spirals in opposite directions with respect to the center of the length thereof, and are collected or centered in the center portion according to the rotation direction of the screw shaft 150. It is configured to open toward.

In this case, although not shown, the means for rotating the screw shaft 150 is preferably a drive motor (not shown).

In addition, the upper and lower electrodes 130 and 140 are provided with electrode opening and closing cylinders 132 and 142, so that the upper and lower electrodes 130 and 140 in a clamp form (clamp type) can be opened and closed.

In addition, a power supply source 160 for supplying power to the upper and lower electrodes 130 and 140 is provided, and an injection nozzle 164 capable of injecting cooling air into the processing chamber 110. There are a plurality of installation, the injection nozzle 164 is connected to the blower 162 for blowing.

Although not shown, a cooling jacket for quenching after the heat treatment may be further installed inside the processing chamber 110.

In addition, a gas supply pipe 172 is connected to the shaping bending pipe 120, and the gas supply pipe 172 is connected to the gas tank 170 to supply the heat treatment of the shaping bending pipe 120. It prevents internal oxidation.

At this time, the gas supply pipe 172 is provided with an on-off valve 174 to control the supply of gas, and further, although not shown, to recover the inert gas supplied to the other end of the X-shaped bending pipe 120 It would be further desirable to have a recovery tube and a recovery tank which can be provided.

Finally, a temperature sensor 180 is provided around the lower electrode 140 in the processing chamber 110, that is, around the bent portion of the X-shaped bending pipe 120 to adjust the temperature during heating and cooling thereof. Real time detection so as to be used to control the operation of the power supply 160 or blower 162.

Meanwhile, the configuration of the loading / unloading unit 200 illustrated in FIGS. 3 and 4 is as follows.

The loading / unloading unit 200 according to the present invention includes a fixed frame 210 forming a substantially rectangular frame body.

At this time, it is preferable that a plurality of casters 212 are installed at the lower surface of the fixed frame 210 so as to freely move the fixed frame 210.

In addition, a plurality of stoppers 220 are installed at one side of the fixed frame 210 at intervals so that the stoppers 220 are connected to the rotating shaft 222 so as to be rotated by a driving means (not shown). The heat treatment unit 100 described above is disposed at an interval in front of the installed side.

Here, the stopper 220 is preferably made of a revolving door form to rotate the opening 90 °.

In addition, a plurality of rows of chain blocks 230 are arranged on the upper surface of the fixing frame 210 from the stopper 220 toward the opposite surface, and the chain blocks 230 are rotated by the rotation motor 236. The driving drum 232 is separated from the driven drum 234 provided near the stopper 220, and is rotated in a caterpillar form. In addition, the shape has a 'V' shape.

As such, although the chain block 230 is formed in a 'V' shape, even if the diameter of the X-shaped bending pipe 120 is variable, the chain block 230 is almost all conventionally used within a ship or industrial heat exchanger. It is possible to accommodate the entire diameter of the curved bent pipe 120.

In addition, a horizontal screw bar 240 is installed on one surface of the fixing frame 210 in the longitudinal direction thereof, that is, in the arrangement direction of the chain block 230, and parallel to the horizontal screw bar 240 with the horizontal screw bar 240 interposed therebetween. A pair of horizontal guides 250 are installed, and the horizontal screw bar 240 is connected to be rotated by a screw motor (not shown).

In this case, two horizontal guides 250 are not necessarily installed as described, and only one of the horizontal guides 250 may be installed as necessary to prevent the rotation of the movable plate 260 to be described later. to be.

In addition, a vertical screw bar 270 is installed on the front surface of the movable plate 260 in the longitudinal direction thereof.

In addition, both ends of the plate-shaped connecting table 280 across the fixing frame 210 in the width direction is coupled to the vertical screw bar 270, respectively.

Therefore, the connecting table 280 is configured to be moved in the longitudinal direction of the fixed frame 210, that is, the chain block 230 direction, and also in the vertical direction, that is, the height direction of the fixed frame 210.

In addition, the fixing plate 290 is fixed in the same direction at a distance in front of the moving plate 260, the auxiliary vertical screw bar 300 is also installed in the fixing plate 290, the auxiliary vertical screw bar 300 There is an auxiliary connector 310 is tooth-coupled in the same manner as the connection rod 280.

In addition, a plurality of auxiliary brackets 320 are fixed downward at a predetermined interval along the longitudinal direction of the auxiliary connecting rod 310, the shaft 330 is protruded perpendicularly to the auxiliary bracket 320, The flow roll 340 is fitted to the shaft 330 to correspond to the chain block 230, the flow roll 340 is provided to be free to move on the shaft 330.

In addition, the main bracket 282 is fixed to the connecting table 280 with the same interval as the auxiliary bracket 320, the operation cylinder (CY) not shown is fixed to the main bracket 282, the operation cylinder A cylinder rod (not shown) of CY penetrates through the main bracket 282 and is connected to the contact member 284.

At this time, the contact member 284 is formed in a substantially 'b' shape.

In addition, a position detecting sensor 286 is installed between the contact member and the contact member of the connection table 280.

Further, a clamp-type clamp 288 that can be opened and closed by a cylinder is installed on the connecting table 280 that is perpendicular to the chain block 230 at intervals from the position sensor 286.

The operating relationship of the present invention made of such a configuration is as follows.

In general, the size of the heat exchanger for ships or industrial facilities in which the shaping bending pipe 120 is used is somewhat standardized, so that the loading / unloading unit 200 falls within the range of the width of the shaping bending pipe 120. The connecting rod 280 and the auxiliary connecting rod 310 provided in the) is maintained in a state of moving downward in advance.

In this state, the operator can simply and easily perform heat treatment of the shaping bending pipe 120 by simply placing the shaping bending pipe 120 on each chain block 230.

That is, when the bending part, which is a portion to be heat-treated in the V-shaped bending pipe 120, is first entered into the 'V' groove of the chain block 230, the bent upper side of the V-shaped bending pipe 120 is connected to the connecting table ( 280 is caught by the contact member 284 and is not yet centered, so that it is disposed in an obliquely inclined state, and in this state, the front end of the curved bent pipe 120, that is, the bent part is not aligned. to be.

In this state, when all the curved bending pipes 120 are seated on the chain block 230, the rotating motor 236 is driven so that the chain block 230 rotates in a caterpillar shape, and thus the curved bending pipe ( 120 are moved, and the bending part is caught by the stopper 220 to be automatically aligned.

In this case, the chain block 230 continues to rotate until the alignment is completed, and the rotation of the chain block 230 is stopped when the alignment of all the curved bending pipes 120 is completed.

Thereafter, the vertical screw bar 270 is rotated, whereby the connecting rod 280 is lowered so that the position sensor 286 detects the inclined upper position of the k-shaped bending pipe 120.

According to the detection result of the position sensor 286, the connecting table 280 is lowered to the upper side of the curved bending pipe 120 accurately and then stopped, and then operating cylinder (CY) installed in the main bracket 282 As it moves forward, it pushes the contact member 284 provided on one side of the main bracket 282, whereby the contact member 284 is exactly the vertical bending line 120 on the vertical extension line of the chain block 230. To be located.

In addition, the bent upper side of the X-shaped bending pipe 120 is in a state of being caught while being in contact with the 'b' type bending portion of the contact member 284.

At the same time, the clamp 288 provided at the back of the contact member 284 clamps a portion of the upper side of the curved bending pipe 120.

When the clamping is completed in this way, the stopper 220 is opened, and the horizontal screw bar 240 is rotated so that the movable plate 260 coupled thereto is advanced, so that the connecting table 280 is also advanced together.

Accordingly, the curved bending pipes 120 are advanced while being bitten by the clamp 288 and the bending portion passes through the stopper 220 installation portion and is charged into the heat treatment unit 100.

In this case, it is more preferable that the chain block 230 is driven together to smoothly move the curved bending pipes 120.

In addition, since the length of the curved bending pipe 120 is long, the auxiliary vertical screw bar 300 is adjusted to prevent sag so that the flow roll 340 may support the bent upper side of the curved bending pipe 120. It is better if you can.

In addition, as shown in Figure 3, it is better to provide a separate pedestal (P) to support the lower portion of the shaping bending pipe 120 also.

Thereafter, when the X-shaped bending pipes 120 reach the electrode fastening position, the movement is stopped, and then an inert gas is supplied from the gas tank 170 to prepare an internal oxidation of the X-shaped bending pipe 120.

In this state, the upper electrode 130 and the lower electrode 140 move upwards and shortly to be in contact with the bending portion of the X-shaped bending pipe 120. Then, the electrode opening / closing cylinders 132 and 142 operate to operate the upper electrode 130. When the lower electrode 140 is clamped to the X-shaped bending pipe 120, it is energized to perform heat treatment by heating.

Subsequently, when the heat treatment is completed, the X-shaped bending pipes 120 are ejected while operating in the opposite direction as described above.

As a result, the bending part of the fin-shaped bending pipe 120 can be automatically loaded / unloaded, as well as heat treatment can be easily performed.

1 is an exemplary view showing an example of a heat treatment apparatus of a general fin-shaped bending pipe,

Figure 2 is a schematic diagram showing the concept of the fin-shaped bending pipe automatic heat treatment apparatus according to the present invention,

Figure 3 is a side view of the fin-shaped bending pipe automatic heat treatment apparatus according to the present invention,

Figure 4 is a partial perspective view of the fin-shaped bending pipe automatic heat treatment apparatus according to the present invention.

♧ description of the symbols for the main parts of the drawing ♧

100 .... Heat Treatment Unit 110 .... Process Chamber

120 .... ＵBending pipe 170 .... Gas tank

200 .... Loading / unloading unit 210 .... Fixed frame

220 .... stopper 230 .... chain block

240 .... Horizontal Screwbar 260 .... Movement Plate

270 ... vertical screw bar 280 ... connecting rod

Claims (5)

In the apparatus for heat-treating the bending portion of the curved bent pipe used in heat exchangers of ships, industrial equipment; A fixed frame, a plurality of rows of chain blocks rotatably arranged on the bottom surface of the fixing frame, in which a bent pipe is seated, and a connecting rod installed to be moved by a horizontal screw bar in the chain block direction; A bracket downwardly protruding from the connecting table on the vertical line of the chain block, a close contact member provided to be moved in a direction orthogonal to the bracket by an operation cylinder fixed to the bracket, a position sensor fixed to a rear connection object of the close contact member, and A loading / unloading unit comprising a clamp and a stopper which opens and closes in the form of a revolving door to one longitudinal side opening of the fixed frame; A processing chamber provided to be spaced apart from the stopper side of the loading / unloading unit, a screw shaft vertically installed inside the processing chamber, an upper electrode and a lower electrode which are coupled to the screw shaft and move in close proximity to each other; An electrode opening / closing cylinder for fastening the upper electrode and the lower electrode to the bending portion of the k-shaped bending pipe, a plurality of injection nozzles installed on the inner wall of the processing chamber to spray cooling air, and a heating temperature of the k-shaped bending pipe or Automatic heat treatment apparatus of the k-type bending pipe, characterized in that consisting of a heat treatment unit consisting of a temperature sensor installed around the lower electrode to measure the cooling temperature. The method according to claim 1; The Ｕ type bending pipe is an automatic heat treatment apparatus of the Ｕ type bending pipe, characterized in that the supply pipe is piped so that the inert gas supplied from the gas tank is filled. The method according to claim 1; Automatic heat treatment apparatus for the k-type bending pipe, characterized in that a plurality of casters are further installed on the lower surface of the fixed frame of the loading / unloading unit. The method according to claim 1; An auxiliary vertical screw bar is further provided on both sides of the opening of the fixing frame opposite the stopper opposite side of the loading / unloading unit, and the auxiliary vertical screw bar is fixedly coupled to the auxiliary vertical screw bar, and the fixing plate is horizontally transverse to the fixing plate. The auxiliary connecting rod is fixed, the automatic heat treatment apparatus of the curved bending pipe, characterized in that the auxiliary roll is installed on the flow roll for supporting the bent upper side of the curved bending pipe. The method according to claim 1; The chain block of the loading / unloading unit is an automatic heat treatment apparatus of a k-shaped bending pipe, characterized in that formed in the form having a 'V' shaped groove.

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