CN200949809Y - Boiler header closing machine - Google Patents

Abstract

The utility model relates to a boiler header closing-up machine comprising a hydraulic machine, a mould, a mandrill, an inductive furnace, an adjusting bolt, a suspension arm, a controlling cabinet, a bed body, a header pipe, a supporting seat, a fixed seat and a tail seat, which is characterized in that the inductive furnace is connected with the mould through the adjusting bolt to realize the integration of the furnace and the machine, which controls the pollution and particularly overcomes the deviation of the ball caused by the deformation of the top of the header pipe when the length of the header pipe is more than five meters; improves the closing-up quality of the end surface without heating for a plurality of times; compared to other header closing-up machines, the utility model has the advantages of fast temperature increasing, high heating efficiency, pollution free, small land and person consumption, low cost and high working efficiency.

Description

Boiler header closing machine

Technical field:

The utility model belongs to the supporting machinery of boiler equipment, in particular to a special machine tool for processing pressure components of boilers, and a boiler header closing machine.

Background technique:

The main function of the header closing machine in the boiler is to mix steam and water, distribute the flow, distribute the resistance and facilitate the arrangement of the heating surface. The part is extruded into a spherical shape and forms an opening suitable for furnace hand hole reinforcement or pipe joints. The currently used header closing machine is composed of a heating furnace and a closing machine. Since the furnace and machine are separated, the header pipe needs to be hoisted to the heating furnace for end heating with oil, gas, coal, etc. as fuel, and there is a lot of heat. Loss, high cost, poor safety, poor heat permeability, especially the effect of heating thick-walled tubes is extremely poor, often needs to be heated many times, prone to defects such as overburning and wrinkling, affecting product quality, and low production efficiency. In addition, when the length of the header pipe is greater than 5 meters, it is easy to deform the top arch of the header pipe, causing "tilted head" when closing, and affecting the quality of the spherical opening.

Invention content:

The purpose of the utility model is to provide an intermediate frequency heating method, which realizes the integration of furnace and machine, and can be formed at one time.

The purpose of this utility model is achieved in that, specifically described as follows:

A boiler header closing machine is composed of a hydraulic press, a machine base, a mold and a heater, and is characterized in that the induction furnace is suspended on the mold.

The advantages of the utility model are obvious. Because of the adoption of a brand-new intermediate frequency heating method and induction heating, the thermal efficiency is improved, and the furnace and machine are integrated. connected with the mould), it moves forward to the set position to start heating, and when the set temperature is reached, the time relay acts, the heating stops, and the main shaft advances again to drive the mold to finish the closing of the pressure header box; the temperature control is accurate and the closing quality is good , Reduced floor space, controlled pollution, one-time molding, no need for multiple heating, not only improved the working conditions of workers, but also improved production efficiency and product quality, reduced costs, and realized civilized production.

Description of drawings:

Figure 1 is a schematic diagram of the structure of the boiler header closing machine

Figure 2 is a schematic diagram of the intermediate frequency heating furnace and mold structure of the boiler header closing machine

Figure 3 is an enlarged schematic diagram of the mold section

In the figure: 1 is the mold, 2 is the induction furnace, 3 is the control cabinet, 4 is the fixed seat, 5 is the header pipe, 6 is the tailstock, 7 is the bed, 8 is the support, 9 is the hydraulic machine, 10 is the adjustment Bolt, 11 is a cantilever, 12 is a main shaft, 13 is a core, and 14 is a bolt.

It can be seen from Figure 1 that the header closing machine is composed of a mold 1, an induction furnace 2, a bed 7, a hydraulic press 9, a header pipe 5, a tailstock 6, a support 8, a fixing seat 4, and a hydraulic press 9; Seat 8, fixed seat 4, and hydraulic press 9 are fixed on the bed 7, and the right end of the main shaft of hydraulic press 9 is connected with the left wall (rear wall) of mold 1; 6 abutment, its front end passes through the induction furnace 2 and abuts with the die opening of the mold 1, realizing the integration of the furnace and machine.

Due to the addition of the fixed seat 4 and the support 8 on the bed 7, when the length of the header pipe is greater than 5 meters, the phenomenon of "twisting" of the ball head caused by the deformation of the top arch of the header pipe is easily overcome, and the end face is improved. The received 151 quality.

It can be seen from Fig. 2 that the cantilever 11 fixedly connected with the induction furnace 2 and the mold 1 are connected together by the adjusting bolt 10, which can complete the centering adjustment of the header pipes 5 with different pipe diameters.

It can be seen from Figure 3 that the core of the mold and the main shaft end of the hydraulic press are connected together by bolts, that is, the right end of the main shaft of the hydraulic press 9 is connected with the core 13 at the left end of the mold 1 by bolts, so that header pipes of different diameters can be exchanged and matched mold.

Detailed ways:

It can be seen from the above that the induction furnace and the closing mold in the boiler header closing machine are connected by suspension. During assembly, it is necessary to ensure that the induction coil is concentric with the mold, so as not to damage the heat insulation layer of the induction furnace by the header pipe during the closing process. And after the header tube enters the induction furnace, the distance between the inner wall of the induction furnace and the outer wall of the header tube should be no more than 20mm and the gap should be uniform.

After the header pipe 5 is clamped on the bed 7, the right end of the header pipe 5 is pushed on the tailstock 6, and its front part is supported by the support 8, and the middle part is blocked by the fixing seat 4, and the left end of the header pipe 5 Pass through the intermediate frequency induction furnace 2 and enter the mold 1. At this time, open the control cabinet 3 and turn on the power supply. The induction furnace 2 suspended on the mold 1 is driven by the main shaft of the hydraulic machine 9. It moves forward to the set position and starts to adjust the header pipe 5. After the heating at the left end reaches the set temperature, the time relay operates, the heating stops, and the main shaft advances again to drive the mold 1 to press the header pipe to the end of closing.

This design adds a mandrel on the basis of the original closing mould, (as shown in Figure 3), which can not only form a round tube hole, but also an oval hand hole, which better meets the needs of the product structure; the control cabinet will also The combination of the power supply and the electronic control of the mouth closing machine realizes the automatic linkage of the two.

Claims (4)

1. A boiler header closing machine is composed of a hydraulic press, an induction furnace, a mold, and a bed, and is characterized in that the induction furnace and the mold are connected together by adjusting bolts. 2. The boiler header closing machine according to claim 1, characterized in that: the fixed seat fixed in the middle of the bed is stuck on the outer wall of the middle of the header tube; the support fixed in the front of the bed supports the header Tube front. 3. The boiler header closing machine according to claim 1, characterized in that: the core of the mold and the main shaft end of the hydraulic press are connected together by bolts. 4. The boiler header closing machine according to claim 1, characterized in that: the induction furnace is connected with the cantilever, and the cantilever is connected with the mold through bolts.

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