KR20050103734A - Flow mix unit for heating pipe cleaning - Google Patents

Abstract

The present invention relates to a flow mixing unit for washing a heating pipe that can increase the washing efficiency of the heating pipe by mixing the washing water and air into the heating pipe, the flow mixing unit for washing the heating pipe according to the present invention, the water pump ( P) and one end thereof are connected to the main wash water pipe 30 to receive the washing water, the washing water control valve 32 interposed in the main washing water pipe 30 to control the flow rate of the washing water, and the air compressor C. One end is connected to the main air pipe 40 is supplied with a high pressure air, the air control valve 42 to control the flow rate of the high pressure air interposed in the main air pipe 40, the main wash water pipe 30 and the main Each suction port 52 and 53 connected to the air pipe 40 and the washing water sucked through each suction port 52 and 53 are mixed with a high pressure air to form a two-phase flow. Body portion 54 and the formation here It comprises a mix nozzle 50 consisting of a discharge port 55 for supplying the mixed fluid to the heating pipe.

According to the flow mixing unit for heating pipe washing according to the present invention as described above, by applying a strong impact to the heating pipe by mixing the washing water and air, it is possible to effectively remove the scale adhered to the inner surface of the pipe, such as cleaning efficiency of the heating pipe This is improved, and in particular, by using a safety supply means there is an advantage that can increase the safety during heating pipe cleaning.

Description

Flow mix unit for heating pipe cleaning

The present invention relates to a heating pipe washing apparatus, and more particularly, to a flow mixing unit for washing a heating pipe that can increase the washing efficiency of the heating pipe by mixing the washing water and air into the heating pipe.

In general, a boiler heating system for heating the room using various heat sources such as a gas boiler or an oil boiler includes a water pump for pressurizing the water heated by the boiler, including the boiler for heating the heating water, The heating pipe pressurized by the water pump passes through the heating pipe for generating heat, as a main component.

In this case, the heating pipe is mounted in the form of being usually buried in the floor of a home house, the heating pipe installed in each room is connected to the boiler through a distributor.

According to the boiler heating system configured as described above, the heating water heated in the boiler is pressurized by the water pump and circulated through each heating pipe through the distributor, and heating is performed by dissipating heat during the heating water passing through the heating pipe.

On the other hand, in such a boiler heating system, since the heating water circulation flow path forms a waste flow path, the heating water injected once is not replaced, but the circulation of the boiler and the heating pipe is continuously replaced, and only the heating water that is naturally reduced by evaporation or the like. This is used in a way that is automatically replenished.

Therefore, according to the general boiler heating system, the hardness and turbidity of the heating water increase due to the natural chemical reaction, etc., over time, and the pipe is corroded and the oxide adheres to the inner surface of the heating pipe. As a result, a pipe damage phenomenon that forms a scale proceeds. According to such a pipe damage phenomenon, the overall thermal efficiency is lowered, and as a result, a heating cost increases.

In addition, if the water leaks due to severe corrosion of the pipes and cracks, the repair work is to be carried out to dismantle the floor where the pipes are embedded and replace the heating pipes.

Therefore, in using the boiler heating system, it is necessary to replace the heating water every new period of time, wash the inside of the heating pipe, and remove scales to prevent the thermal efficiency from falling and to prevent the pipe from being damaged in advance. desirable.

Here, the so-called high pressure water supply method is used as a method for cleaning the heating pipe, and the high pressure water supply method supplies the washing water at a high pressure to the heating pipe so that the scale adhered to the heating water and the inner surface of the heating pipe by the pressure of the washing water is discharged. This will be described in detail as follows.

The high pressure water supply system uses a water pump for supplying the washing water at high pressure, a connection hose connecting the water pump and the heating pipe, and a valve mechanism for controlling the supply of the washing water. The connection hose 20 is connected to the inlet 121 of the distributor 12 at the introduction portion of the pipe 10, and the washing water is supplied through the water pump P.

When the washing water pressurized by the water pump (P) is injected into each heating pipe, the existing heating water is pushed out and the scale adhered to the inner surface of the pipe is also separated from the pipe by the impact generated during the flow of the washing water and discharged. Will be.

That is, the conventional heating pipe cleaning method has the feature that it is possible to clean the heating pipe only with a relatively simple equipment.

However, according to the prior art, since the cleaning effect is obtained only by the pressure of the washing water, when the heating pipe is used without being washed for a long time and a large amount of scale is strongly fixed on its inner surface, the descaling action is not effectively performed. As such, there is a problem that the heating pipe cleaning is not made properly.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a flow mixing unit for washing a heating pipe which can increase the washing effect by mixing the washing water and air in the heating pipe.

The flow mixing unit for heating pipe washing according to the present invention provided to achieve the above object is connected to a water pump and one end of the main wash water pipe to be supplied with washing water, and the main washing water pipe is interposed to adjust the flow rate of the washing water. Is connected to the washing water control valve, the air compressor and its one end is connected to the main air pipe receiving the high pressure air, the air control valve for controlling the flow rate of the high pressure air is interposed in the main air pipe, the washing water pipe and the air pipe Each suction port, a body part for mixing two-phase flow by washing water and high pressure air sucked through each suction port, and a discharge port for supplying a mixed fluid formed in the body part to a heating pipe. It consists of a mix nozzle consisting of.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2 to 3B.

The flow mixing unit for washing the heating pipe according to the embodiment of the present invention, as shown in Figure 2, the water pump (P) (see Figure 3a) and its one end is connected to the main wash water pipe 30 to receive the washing water and , The main air pipe interposed in the main wash water pipe 30 to adjust the flow rate of the washing water, and an air compressor C (see FIG. 3A) and one end thereof connected to supply air; 40), an air control valve 42 interposed in the main air pipe 40 to control the flow rate of the high pressure air, and the washing water and the high pressure air supplied through the main pipes 30 and 40 are mixed. It comprises a mix nozzle 50 to supply to the heating pipe.

The mix nozzle 50 is sucked through each of the suction ports 52 and 53 connected to the main wash water pipe 30 and the main air pipe 40 and the suction ports 52 and 53. It consists of a body portion 54 in which the washing water and the high pressure air are mixed to form an abnormal fluid, and a discharge port 55 for supplying a so-called mixed fluid formed in the body portion 54 to the heating pipe.

Here, the front end of each of the main pipes 30 and 40 and the discharge port 55 of the mix nozzle 50 are separated from the connection hose 20 and the heating pipe side of the water pump P and the air compressor C. Connectors (301) (401) (501) are provided to enable connection.

And, the flow mixing unit for washing the heating pipe according to the present embodiment, the safety supply means that can automatically limit the flow rate of the washing water and air through the main wash water pipe 30 and the main air pipe 40 to a predetermined value or less; It is made to include more.

The safety supply means, the auxiliary wash water pipe 34 branched from the main wash water pipe 30 and connected to the body portion 54 of the mix nozzle 50, and branched from the main air pipe 40 also mix nozzle ( The secondary air pipe 44 connected to the body portion 54 of the 50, and the washing water and air flowing through the main pipe 30, 40 selectively guides the secondary pipe (34, 44) It consists of a wash water induction valve 36 and the air induction valve 46 to.

Here, the auxiliary pipes 34 and 44 are so-called small-diameter pipes having an inner diameter smaller than a predetermined value than the inner diameters of the main wash water pipe 30 and the main air pipe 40, and each main pipe 30 ( 40) is connected through the T-shaped branch pipe 38, 48 interposed in the middle.

In addition, the main wash water pipe 30 and the main air pipe 40 are provided with pressure gauges 39 and 49 for measuring the pressure of the washing water and the air, respectively.

Referring to the operation of the heat mixing unit for washing the heating pipe according to the present embodiment as described above are as follows.

First, in the flow mixing unit according to the present embodiment, as shown in FIG. 3A, the main wash water pipe 30 and the main air pipe 40 are connected to the water pump P and the connectors 301 and 401 at the distal end, respectively. Connected to the connection hose 20 of the air compressor (C), the discharge port 55 of the mix nozzle 50 is connected to the inlet of the distributor 12 through the connector 501 and the heating pipe 10 through Is installed.

In this state, when the water pump (P) and the air compressor (C) is operated to supply the washing water through the main wash water pipe (30) and supply the high pressure air through the main air pipe (40), the washing water and the high pressure air The mixture is mixed in the nozzle 50 and supplied to the heating pipe 10 through the discharge port 501 in a two-phase flow state.

As such, the mixed fluid in the abnormal flow state supplied to the heating pipe has a strong impact on the inner surface of the heating pipe during the flow process because the density is not constant, and the scale adhered to the inner surface of the heating pipe is easily dropped by the impact. , The washing efficiency is improved than the washing using only the conventional washing water.

In using the flow mix unit according to the present embodiment, the supply pressure of the washing water and the air should be adjusted according to the specifications and characteristics of the heating pipe, and the two types of the so-called general method and the safety method according to the method of adjusting the supply pressure. Will be used.

First, the general method is to adjust the supply pressure of the washing water and air supplied by operating the washing water control valve 32 and the air control valve 42 to suit the characteristics of the heating pipe to be cleaned (see Fig. 3a), in this case Each of the induction valves 36 and 46 is kept in a fully open state (opened to the main pipe side) so that most of the supply amount of washing water and air flows through each of the main pipes 30 and 40.

According to the general method as described above, it is possible to maximize the cleaning effect by precisely adjusting the supply pressure of the washing water and the air to be suitable for the characteristics of the heating pipe to be cleaned by controlling the opening degree of each control valve 32 or 42. .

On the other hand, according to the flow mixing unit according to the present embodiment, the cleaning effect is maintained at the highest when used in a general manner, but the washing water and the high pressure air is mixed, causing a strong impact, various characteristics of the heating piping (length, diameter, material, age of use If the supply pressure of the washing water and the high pressure air is not adjusted according to the degree of corrosion, etc., the heating pipe may be damaged.

Therefore, in the case of using the general method, it is desirable to carry out by a skilled worker who can accurately grasp the characteristics of the heating pipe to be cleaned and predict the correlation between the supply pressure of the washing water and the air and the influence on the heating pipe. In the case of unskilled workers, it is effective to use the safety method to minimize the effect on the heating piping.

The safety method, as shown in Figure 2b by operating the washing water induction valve 36 and the air induction valve 46, to block the flow path directly leading to the mix nozzle 50 in each of the main pipe 30, 40 The flow of washing water and air is directed to the auxiliary wash water pipe 34 and the auxiliary air pipe 44 from each main pipe 30 and 40.

That is, to automatically limit the pressure of the washing water and air to a predetermined value or less, according to this safety method, due to the small diameter characteristics of the auxiliary washing water pipe 34 and the auxiliary air pipe 44 and the washing water flowing into the mix nozzle 50 and Since the pressure of the air does not exceed a certain value, in most heating piping, it is possible to safely perform a washing operation without considering the characteristic value largely.

As described above, according to the flow mixing unit for washing a heating pipe according to the present invention, the washing water and air are mixed to apply a strong impact to the heating pipe, thereby effectively removing scales fixed on the inner surface of the pipe. Efficiency is improved, and in particular, by using a safety supply means there is an advantage that can increase the safety when cleaning the heating pipe.

1 is a schematic view showing a heating pipe cleaning method according to the prior art.

Figure 2 is a perspective view showing the structure of the flow mixing unit for heating pipe washing according to an embodiment of the present invention.

Figure 3a is a state diagram showing the general cleaning method using the flow mixing unit for washing the heating pipe according to an embodiment of the present invention.

Figure 3b is a state diagram showing the safety system washing action using the flow mix unit for washing the heating pipe according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: heating piping 30: main wash water pipe

32: washing water control valve 34: auxiliary wash water pipe

36: washing water induction valve 40: main air pipe

42: air control valve 44: auxiliary air pipe

46: air induction valve 50: mix nozzle

52: suction port 53: suction port

54: body portion 55: discharge port

P: Water Pump C: Air Compressor

Claims (2)

The main wash water pipe, which is connected to the water pump and one end thereof to receive the washing water, A washing water control valve interposed in the washing water pipe to adjust a flow rate of washing water; Air compressor and one end connected to the main air pipe to supply high pressure air, An air control valve interposed in the air pipe to control the flow rate of the high pressure air; Respective suction ports connected to the main wash water pipe and the main air pipe; Mix nozzle consisting of a body part for mixing two-phase flow by washing water and high pressure air sucked through each suction port, and a discharge port for supplying a mixed fluid formed in the body part to a heating pipe Flow mixing unit for heating pipe washing comprising a. The method of claim 1, An auxiliary wash water pipe branched from the main wash water pipe and connected to the mix nozzle by a structure having an inner diameter smaller than a predetermined diameter of the main wash water pipe, A washing water induction valve interposed on the washing water pipe between the branch point of the auxiliary washing water pipe and the mixing nozzle to selectively guide the flow of the washing water through the washing water pipe to the auxiliary washing water pipe; As a structure having an internal diameter smaller than a predetermined value than the inner diameter of the main air pipe, the auxiliary air pipe branched from the main air pipe and connected to the mix nozzle, An air induction valve interposed on the main air pipe between the branch point of the auxiliary air pipe and the mix nozzle to selectively guide the flow of the high pressure air through the main air pipe to the auxiliary air pipe; The flow mix unit for washing the heating pipe further comprises a safety supply means for automatically limiting the amount of washing water and air supply to the mix nozzle below a predetermined value.