KR100653421B1 - Boiler manifold production method and that manifold - Google Patents

Abstract

A manufacturing method of a distributing pipe for a boiler and the distributing pipe molded by the manufacturing method are provided to increase the combining performance of the valves by mounting the distributing pipes and maximize the usable limit according to the formation of the thin stainless pipe. A manufacturing method of a distributing pipe for a boiler comprises a preparatory step(S10) of preparing a pipe(100) and a blower mold(200); a pressure unit mounting step(S20) of installing a pressure unit(300) at one side of the connection member; a pressure step(S30) of generating regular pressure by the pressure unit to press the inside of the pipe; a first molding step(S40) of molding the pipe formed at both sides by plural combining units(110,110a); a boring step(S50) of boring a hole at the combining unit with a predetermined diameter; a burring step(S60) of forming the bent surface by recessing the inner side of the outer periphery of the expanded hole; a tap processing step(S70) of forming a thread at the expanded hole; and a both side axis pipe step(S80) of molding the fixing unit.

Description

Manufacturing method of distribution pipe for boiler and distribution pipe molded by the manufacturing method {Boiler manifold production method and that manifold}

1 is a general residential boiler system diagram.

Figure 2 is a perspective view showing the installation state of the conventional supply and circulation distribution pipe.

Figure 3 is a perspective view showing an example of a conventional system distribution pipe.

4 is a perspective view of a distribution pipe according to the present invention.

5 is a cross-sectional view of a distribution tube according to the present invention;

5a is a cross-sectional view of the manual control valve coupled to the coupling portion formed on one side of the distribution pipe, 5b is a cross-sectional view of the system distribution pipe formed on both sides of the distribution pipe, the automatic control valve is configured on any one of the coupling pipe.

6 is a manufacturing process diagram of the distribution pipe according to the present invention.

Figure 7 is an exploded perspective view of a part of the blower mold according to the distribution pipe forming according to the present invention.

Explanation of symbols on the main parts of the drawings

100: pipe 100a, 100b, 100c: distribution pipe

110, 110a: fastening portion 112: fastening hole

200: Brower mold 210, 220: Upper, lower mold

230, 240: upper, lower cover mold

The present invention relates to a manufacturing method of a distribution pipe for a boiler and a distribution pipe formed by the manufacturing method, and more particularly, to form a distribution pipe formed with a fastening portion to be connected to a plurality of pipes at high pressure, manufacturing cost is low In addition, the present invention relates to a method for producing a distribution pipe for a boiler having a product competitiveness capable of easy connection of a pipe through a fastening part and semi-permanent use, and a distribution pipe formed by the manufacturing method.

In general, the boiler system for a home includes a supply distribution pipe (3) for supplying hot water flowing from the supply pipe (1) of the boiler to each room, and the hot water flowing from each room to the circulation pipe (2) of the boiler as shown in FIG. And a circulation distribution pipe 4 for circulation supply.

In addition, the supply distribution pipe (3) is provided with a plurality of flow rate control valve 31 for adjusting the supply amount of hot water supplied to the hot water pipes installed in each room, the circulation distribution pipe (4) temperature for controlling the temperature of each room A control valve 41 is provided.

In such a boiler system for the home, hot water heated by the operation of the boiler is supplied to the supply distribution pipe (3) through the pipe, the hot water supplied to the supply distribution pipe (3) circulates the room through the hot water pipe of each room, the room is heated do.

The hot water circulated to the room and cooled is circulated to the boiler through the circulation distribution pipe 4 and heated by the boiler, and then recycled back to the supply distribution pipe 3.

FIG. 2 is a perspective view showing a state of a conventional supply and circulation distribution pipe, wherein the supply distribution pipe 3 or the circulation distribution pipe 4 has a valve 31 on one side of the pipe body 3a and the pipe body 3a. A plurality of connectors 3b are fastened to each other, and the valves 31 and 41 are fastened to the connectors 3b.

In addition, the connector (3b) forms a female screw on the connector (3b) according to the type of pipe (3a), by coupling the valve or by fusion bonding the separate distribution nozzle to the connector (3b) to the valve to the distribution nozzle It is used in a variety of ways, including fastening.

However, the conventional distribution pipe has a cumbersome problem of adjusting the room temperature by adjusting the amount of hot water supplied to each room by a user operating the valve fastened to the connector 3b formed at one side of the tube 3a. there was.

In order to solve the above problem, recently, a system distribution pipe further including an automatic regulating valve is used on the other side of the connector to which the valve is coupled. FIG. 3 is a perspective view showing an example of a conventional system distribution pipe. On the lower side, a second connector is formed on the other side opposite to the connector 3b of the distribution pipe 30 composed of the pipe body 3a to which the valve 31 is coupled to the connector 3b formed at one side, and to the second connector. A fastening and fixed automatic control valve 10 is configured, the automatic control valve 10 is configured to automatically adjust the amount of hot water drained or circulated to the connector under the control of the control unit.

Therefore, the system distribution pipe solves the trouble of the conventional manual adjustment of the amount of hot water by remotely adjusting the amount of hot water under the control of the controller.

However, the conventional distribution pipe or system distribution pipe has a problem that the unit price is expensive.

This is because the conventional distribution pipe or system distribution pipe is formed of bronze or brass, which is an expensive material, and also in the processing thereof, it is inexpensive due to the material and fabrication.

In addition, the conventional distribution pipe or system distribution pipe has a problem that it has a valid period of use.

Since the hot water is always filled inside, the distribution tube formed of bronze or brass is corroded by hot water, and foreign matters and contaminants are stacked by the corrosion, which prevents accurate control of the amount of hot water. And, since this acts as a big obstacle in the system distribution pipe configured with an automatic control valve, there is a problem that the maintenance cost that needs to be cleaned or replaced after a certain use is added.

In addition, in general, the product molded by the casting method has a disadvantage of brittleness, the distribution pipe or system distribution pipe formed by the casting method is a disadvantage that is easily broken by the impact, there is a problem that requires considerable care in handling.

Due to the above problems, there is a case in which stainless steel pipes which can be used semi-permanently without being corroded by hot water have been recently used.

Such a stainless steel distribution pipe drills a plurality of connection holes to couple valves to one side of the stainless pipe, and fixes the distribution nozzles by special welding such as argon welding to fix the distribution nozzles to the perforated connection holes. As a result, the material cost and the processing cost are lower than those of the distribution pipe formed of the conventional bronze or brass.

However, in the above case, when the distribution nozzle is fixed to the pipe, the vertical center of the pipe and the distribution nozzle is distorted due to the deformation caused by the high temperature generated in the welding. This is easy for the system distribution pipe adopting the automatic control valve. It is difficult to control and has limitations of use.

In addition, since the stainless steel pipe has a thickness of 1 to 1.5 mm due to the material property, it cannot be threaded, and thus, the stainless pipe is inevitably fixed by fusion by welding. Its use was not universal.

The present invention has been proposed to solve the above problems, an object of the present invention is to provide a distribution pipe formed with a plurality of fastening portions to enable fastening and fixing of the valve or automatic control valve on one side at high pressure, regardless of the thickness It is possible to provide a production method of a distribution pipe for a boiler having a product competitiveness which is possible, easy to manufacture, and excellent in strength, and a distribution pipe formed by the production method.

It is another object of the present invention to provide a method for manufacturing a distribution pipe for a boiler and a distribution pipe formed by the manufacturing method for maximizing the limit of use that the use life is semi-permanent as formed by a thin stainless steel pipe.

Method for producing a distribution pipe for the boiler of the present invention and the distribution pipe formed by the production method for achieving the above object is a pipe for distributing the heated hot water in the boiler system to each room, or to recover the cooled hot water A method of manufacturing a distribution pipe coupled to a plurality of pipes, the method comprising: preparing a pipe mold and a brower mold, each of which is positioned above and below the pipe, and has a plurality of protruding grooves formed therein; Comprising a closing member and a connecting member at both ends of the brower mold through the preparation step, the pressure means for installing a pressure means for providing a pressure to the pipe fixed to the brower mold on one side of the connection member; A pressurizing step of generating a predetermined pressure by the pressure means installed through the pressure means installation step, whereby the predetermined pressure pressurizes the inside of the pipe; As the constant pressure pressurizes the inside of the pipe through the pressing step, the primary mold is formed to be in close contact with a plurality of protrusion grooves of the brower mold located above and below the pipe, thereby forming a pipe having a plurality of fastening portions formed at both sides thereof. Molding step; A perforating step of perforating holes having a diameter of a predetermined size to a plurality of fastening portions of the pipe formed through the first forming step; Burring step to expand the hole formed through the drilling step to a certain diameter, the outer periphery of the hole to be enlarged recessed the inner side to a certain depth to form a bent surface; And both side shaft tube steps of forming a fixing part to be coupled and fixed with other pipes by axially connecting both ends of the pipe having a plurality of fastening parts formed through the burring step. It is characterized by.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

Figure 4 is a perspective view of the distribution pipe, referring to the distribution pipe is formed on the one or both sides a plurality of fastening portion 110 is protruded by high pressure, the plurality of fastening portion 110 is a valve or automatic control valve is fastened The fastening hole 112 is formed to be fixed.

In addition, it is preferable to form fixing parts 120 to which pipes are connected at both ends of the distribution pipe so that hot water of the boiler enters or is recovered.

In addition, the distribution pipe is preferably formed of a stainless material that can be used semi-permanently without generating corrosion by hot water, but is not limited thereto. Pipes made of bronze or brass or pipes that are not corroded by hot water are conventionally used. Can be used.

5 is a cross-sectional view of the distribution pipe according to the present invention, 5a is a cross-sectional view of the manual control valve coupled to the fastening portion formed on one side of the distribution pipe, 5b is a fastening portion formed on both sides of the distribution pipe, the fastening of any one side This is a cross-sectional view of a system distribution pipe with an automatic control valve in the section.

As shown in FIG. 5A, the distribution pipe 100b has a plurality of fastening parts 110 formed at a high pressure on one side thereof, and a plurality of fastening holes 110 are formed at the plurality of fastening parts 110, respectively. It is used to configure the valve (3) that can manually adjust the amount of hot water through.

As shown in FIG. 5B, the distribution pipe 100c has a plurality of fastening parts 110 protruding by high pressure in a longitudinal direction on a vertical line facing each other, and fastening holes 112 in each of the plurality of fastening parts 110. ) Is formed, the fastening hole 112 formed on the upper side is configured with an automatic control valve 10, the other side, that is opposite to the automatic control valve 10, that is the pipe is connected to the automatic control valve ( According to the operation of 10) by adjusting the opening level of the lower fastening hole 112 is used as a system distribution pipe to adjust the amount of hot water drained through the lower fastening hole 112.

6 is a manufacturing process diagram of the distribution tube according to the present invention, look at the forming method of the distribution tube according to the present invention.

Preparation step (S10) is a step for preparing a pipe for the distribution pipe, and the brower mold fixed to the upper and lower ends of the pipe, which is a pipe mold fixed to the upper, lower of the pipe 100 and the pipe 100 of the circular 200 is installed, the pipe 100 is preferably made of stainless steel having a thickness of 1 ~ 1.5 mm.

Figure 7 is an exploded perspective view of a part of the blower mold according to the distribution pipe forming according to the present invention, the blower mold 200 is formed with receiving holes (212, 222) for accommodating the pipe 100 therein, The receiving holes (212, 222) is formed of the upper, lower mold 210, 220 formed with a protrusion groove 214, 224 corresponding to the fastening portion of the distribution pipe, the upper, lower mold 210 The upper and lower cover molds 230 and 240 are configured to support the 220 and amplify the fixing force due to the close contact with each other.

Particularly, the upper and lower molds 210 and 220 are unit molds having one protrusion groove 214 and 224 for ease of processing. 210 and 220 are preferably fixed to the upper and lower cover molds 230 and 240.

In addition, although not shown, the upper and lower molds 210 and 220 and the upper and lower cover molds 230 and 240 are firmly fixed to each unit by fastening means, and further, the inner receiving holes 212 and 222. In the state in which the pipe 100 is accommodated), the upper and lower cover molds 230 and 240 are firmly fixed by the fastening means, and the brower 200 in which the pipe 100 is accommodated is fixed to the work table. It is desirable to allow work to proceed.

Pressure means installation step (S20) is a step of installing the closing member and the connecting member at both ends of the pipe in a state in which the brower mold is installed on the outside of the pipe through the preparation step (S10), the pressure member is installed in the connecting member .

This is to close the pipe 100 is open at both ends in the brower mold 200 in the state receiving the pipe 100 through the center receiving hole (212, 222), the pressure means 300 is installed at one end do.

In addition, one end of the pipe 100 and the brower mold 200 is fastened and fixed to the closing member 420, the other end is fixed to the connection member 410 is installed, the pressure member 300 to the connection member 410 Is connected to, the closing member 420 and the connecting member 410 is configured to maintain the airtight according to the high pressure.

On the other hand, the pressure means 300 is preferably to use a hydraulic pressure that can easily generate a high pressure, it is preferable to use a pressure booster easy to generate a high pressure.

In particular, the inside of the pipe 100 is filled with an incompressible fluid, the incompressible fluid may be water, but it is preferable to use an oil such as cutting oil.

Pressing step (S30) is provided with a predetermined pressure from the pressure means installed on one side of the brower mold through the pressure means installation step (S20), the fluid filled in the pipe by the provided pressure is expanded by the pressure, the pipe Pressurizing.

It is provided that a certain pressure is provided from the pressure means 300 installed at one end of the brower mold 200, the provided pressure acts on the fluid filled inside the pipe 100 through the connecting member 410, wherein the pressure is The received fluid presses the inner diameter of the pipe 100.

Therefore, the pipe 100 is subjected to a strong pressure is applied to the empty space of the protruding grooves 214 and 224 formed in the upper and lower molds 210 and 220, and eventually, is formed.

On the other hand, the pressure provided by the pressure means 300 is a high pressure, for example, in the case of a stainless steel pipe having a thickness of 1 ~ 1.5 mm has a strength of about 1000 ~ 1500 bar (bar), it is limited to this The strength of the pressure provided by the pressure means 300 may vary depending on the thickness and the material of the pipe 100.

The primary forming step (S40) is primarily molded into a distribution tube having a plurality of fastening portions as the pipe is in close contact with the blower mold by the high pressure through the pressing step (S30).

The high pressure is applied to the pipe 100 is in close contact with the empty space of the protruding grooves 214, 224, and then remove the high pressure from the pressure means 300, dismantle the brower mold 200 in the pipe 100 The pipe 100 is formed into a distribution pipe 100a having a shape in which a plurality of fastening parts 110a protrude on one side.

Perforating step (S50) is a step of forming a hole of a predetermined diameter in the fastening portion of the distribution pipe formed through the first molding step (S40), which is formed with a plurality of fastening portions (110a) protruding on one side or both sides In the primary molding distribution pipe (100a), by drilling a hole of a predetermined diameter in the fastening portion (110a), for example, if you want to form a fastening hole 112 of about 18mm size, the hole diameter is about 12.5mm This is preferred, which varies the pore diameter depending on the size of the valve to be subsequently tightened.

In addition, the perforations are inserted into the hole core 510 having the same or smaller diameter than the inner diameter of the distribution pipe (100a), the hole core 510 has a plurality of perforations having a diameter equal to or larger than the perforation In addition, a punching 520 is formed above the distribution pipe 100a, and a hole having a predetermined diameter is formed in the fastening portion 110a of the distribution pipe 100a by the lowering of the punching 520.

Of course, when the perforation is completed, the punching 520 is raised, and the perforation work is completed by separating the perforated core 510 inserted into the distribution pipe 100a.

Burring step (S60) is a step of expanding a hole of a predetermined diameter formed in the fastening portion of the distribution pipe through the drilling step (S50), so that a bending surface of a predetermined depth is formed inward, which is in the fastening portion (110a) The burring punch 620 is inserted into the formed hole having a predetermined diameter, and the hole is bent inward by the forced indentation of the burring punch 620, thereby expanding.

In the burring process, a burring core 610 is inserted into an inner diameter of a distribution pipe 100a in which a fastening part 110a having a predetermined diameter hole is formed, and a burring hole having a diameter to be burried is formed in the burring core 610. The burring punch 620 is formed above the distribution pipe 100a, and the hole formed in the fastening portion 110a of the distribution pipe 100a by the falling of the burring punch 620 is the burring punch ( The forced indentation of 620 forms a bent surface having a predetermined depth inwardly of the inner circumference thereof, thereby forming a state in which the hole is expanded.

At this time, the bent surface of the predetermined depth by the burring preferably has a length of about 5mm.

Of course, the burring core 610 is formed to be separated in two stages as shown, it is formed to avoid interference of separation by the inner surface of the bent hole during the burring process.

Tap processing step (S70) is a step of forming a tab of the size that the valve can be fastened to the hole expanded through the burring step (S60), which is a type of valve in the hole is expanded to a certain diameter by the burring punch (620) The thread is formed by the tab 700 in accordance with this.

In this case, it is preferable that the tab 700 forms a thread by using a rolled tab rather than a cutting tab, which is formed by a thread that is bent to a certain depth by expansion.

In this case, if the thread is formed according to the structure of the valve or the hole itself can be used, it can be used without the thread processing by the tab 700, which can be used or other processing depending on the structure of the valve. .

Both side conduit step (S80) is a step of condensing both sides of the threaded distribution pipe (100a) through the tapping step (S70), which is the both sides of the threaded distribution pipe (100a) by the conduit tube (800) Press the end to make the condenser.

In this case, the shaft tube is formed to facilitate the coupling when installed in the boiler, in some cases can be used without the shaft tube processing by the shaft tube (800).

Therefore, the molding of the distribution pipes 100 and 100 formed on one side or both sides of the fastening part 110 having the fastening hole 112 is completed as shown in FIG. 4.

Of course, the distribution pipe is not limited to the boiler system, and can be used for applications such as a manifold body and a distributor in which a plurality of pipes are connected to one pipe body.

As described above, the present invention provides a distribution pipe formed with a plurality of fastening portions to enable fastening and fastening of a valve or an automatic control valve on one side at high pressure, and can be used regardless of thickness, and is easy to manufacture, and has excellent strength. It has the effect of product competitiveness.

In addition, it is effective to maximize the limit of use that the use life is semi-permanent as it is formed by a thin stainless steel pipe.

What has been described above is just one embodiment for carrying out the production method of the distribution pipe for boilers and the distribution pipe formed by the production method of the present invention, the present invention is not limited to the above embodiments, the following patent Without departing from the gist of the invention claimed in the claims, any person of ordinary skill in the art will have a technical spirit of the present invention to the extent that various modifications can be made.

Claims (4)

In the manufacturing method of the distribution pipe combined with a plurality of pipes in the pipe to distribute the hot water heated in the boiler system to each room, or to recover the cooled hot water, A preparatory step (S10) which is positioned above and below the pipe and the pipe, respectively, to prepare a brower mold having a plurality of protruding grooves formed therein; Comprising the closing member and the connecting member at both ends of the brower mold through the preparation step (S10), the pressure means installation step of installing a pressure means for providing pressure to the pipe fixed to the brower mold on one side of the connection member (S20); A pressurization step (S30) of generating a predetermined pressure by the pressure means installed through the pressure means installation step (S20), and thus a predetermined pressure pressurizes the inside of the pipe; As the predetermined pressure pressurizes the inside of the pipe through the pressing step (S30), the pipe is formed to be in close contact with a plurality of protruding grooves of a brower mold located above and below the pipe, thereby forming a pipe having a plurality of fastening portions formed at both sides thereof. Primary molding step (S40) to; A perforating step (S50) of perforating holes having a diameter of a predetermined size to a plurality of fastening portions of the pipe formed through the first forming step (S40); Burring step (S60) to expand the hole formed through the punching step (S50) to a predetermined diameter, the outer periphery of the pipe to be recessed to a predetermined depth to form a bent surface (S60); And Both side shaft tube step (S80) for forming a fixed portion to be coupled to the other pipes by axially pipe the both ends of the pipe formed with a plurality of fastening portion through the burring step (S60); How to make. The method of claim 1, Forming a screw thread in the plurality of fastening portion expansion hole formed through the burring step (S60), the screw thread is formed in a size that can be coupled to the valve tapping step (S70); further comprising a Method of making a distribution pipe for boilers. The method of claim 1, The pressure means installation step (S20) is the production of the distribution pipe for the boiler, characterized in that the pressure provided from the pressure means installed on one side of the non-compressible fluid in the pipe (100a) to work evenly inside the pipe. Way. The distribution pipe for boilers produced by the manufacturing method of any one of Claims 1-3.

Images