KR200144723Y1 - Connection structure of pumping pipe for groundwater - Google Patents

Abstract

The present invention relates to a connection structure of the groundwater pumping pipe, in particular, in the connection structure of the groundwater pumping pipe connecting the upper pipe 10 and the lower pipe 20 continuously, even if the groundwater development depth is increased, the conventional flange Compared to the connection, it is possible to reduce the number of casings (C) and the cross section of the excavation hole (H) and to reduce the thickness of the pumping pipe, which is convenient for the excavation work, the casing work and the pumping pipe connection work, and the cost can be reduced. The upper and lower pipes 10 and the lower portion so as to be caught by the catching ends 14 and 24 integrally formed at the ends of the upper pipe 10 and the lower pipe 20, and the catching ends 14 and 24. And a pair of fasteners 12 and 22 fitted to the pipe 20, and a connector 30 screwed at both ends of the fasteners 12 and 22, and an outer surface of the connector 30. Ship to which this electric wiring 40 is fitted Pumping pipe for groundwater, which extends underground along the outer surface of the pump pipe by using the connector 30 protruding from the protection end 34 to facilitate the protection of the electric wiring 40 connected to the submersible pump 50 and the like. The connection structure of the.

Description

Connection structure of pumping pipe for groundwater

The present invention relates to a connection structure of the groundwater pumping pipe, in particular, in the connection structure of the groundwater pumping pipe for continuously connecting the upper pipe and the lower pipe, the upper pipe and the lower part so as to reduce the cross section of the pumping pipe Inserting a pair of fasteners to be engaged with the close contact end formed integrally at one end of the pipe, and screwing the fasteners at both ends of the connector to connect the upper pipe and the lower pipe, and also to the outer side of the connector The present invention relates to a connection structure of pumping pipes for groundwater, which protrudes a wiring protection end into which electrical wiring is inserted and extends underground along the outer surface of the pumping pipe to facilitate the protection of electrical wiring connected to an underwater pump.

In general, in order to develop groundwater for securing living water, agricultural water, industrial water, or hot spring water, such as drinking water, a groundwater exploration process is performed, and an underground bottom is formed at a predetermined depth below the surface as shown in FIG. Excavation hole (H) is formed to the bottom of the water layer (R) and pumping pipe (P) is installed inside the excavation hole (H) and pumps groundwater from the underground reservoir (R) using a pump.

In general, the underground reservoir layer (R) has a geological structure to provide a passageway through which water flowing from the surface can be gathered a predetermined amount or more. The underground layers of various structures such as sandstone layers or granite layers formed with cracks are underground. If they are present in the lower part of the water table, they may be the underground reservoir layer R.

And when drilling holes (H) are formed from the surface to the underground reservoir layer (R) to pump the groundwater, casings on the inner surface of the drilling holes (H) to a predetermined depth to prevent depression of the drilling holes (H). (C) is provided, and the surface layer (S) adjacent to the excavation hole (H) is usually a soft ground in the usual case, so that a separate grouting (G) between the ground layer (S) and the casing (C) to strengthen the ground This may be done. And the casing (C) serves to prevent the surface water of the surface layer (S) adjacent to the excavation hole (H) to flow into the excavation hole (H), the surface water is generally contaminated by the ground or ground pollution source In many cases, the contaminated surface water is introduced into the excavation hole (H) to prevent the groundwater below the excavation hole (H) from being contaminated.

In addition, the casing (C) is provided with a pumping pipe (P) for pumping the groundwater of the underground reservoir layer (R) to the ground, the pumping pipe (P) is connected to a plurality of predetermined length in succession from the ground Since it is installed in the casing (C) while descending to the underground reservoir (R), there is a connection means between the pump pipes (P) to support the connection force required according to the weight of the pump pipe (P) connection It is necessary.

In the conventional case, as shown in FIGS. 1, 2, and 3a and 3b of the accompanying drawings, protruding outward from one end of the upper and lower pump pipes P as a connecting means of the pump pipes P is formed. The structure which fastens the flange F to be used using the bolt B and the nut N has been used.

However, according to the conventional connection structure described above, when the connection length of the positive pipe P increases from several hundred meters to several thousand meters underground depending on the depth of the underground reservoir layer R, In order to form a pipe connection with a sufficient bearing capacity, it is required that the cross section of the flange (F) is considerably large, and in general, the casing whose cross section is determined according to the size of the transverse cross section of the flange (F) ( C) and the excavation hole (H) also takes a large cross-section, which makes the installation work of the casing (C) and the excavation of the excavation hole (H) difficult and the cost increases, as well as increased pumping pipe In order to support the weight of (P), the rigidity of the bolt (B) and the nut (N) must be increased, and the thickness of the flange (F) must be increased. Therefore, the thickness of the positive pipe (P) formed integrally with the flange (F) is also increased. Phil It should be increased with a longer because there is a problem in that the economical losses.

In addition, unlike the case where the pump is installed on the ground, when using the water pump (WP), the electric wiring including a power line for driving the motor of the water pump (WP) connected to the bottom of the pump pipe (P) ( E) is sent down the excavation hole (H) along the side of the positive pipe (P), when the electric wiring (E) passing through the flange (F) due to the narrow gap with the casing (C) In order to prevent disconnection or short circuit due to the impact of the back and the like, there is also a hassle to form by separately cutting the wire passing portion (F1) on one side of the flange (F), a positive pipe connected in such a wire passing portion (F1) There was also a problem in that the connection force between (P) was weakened, resulting in uneven connection power.

The present invention was devised to solve the problems of the conventional pump connection structure using the flange connection, the technical problem of the present invention is, firstly, despite the increase in the depth of groundwater development in the connection structure of the pump It provides a connection structure between pump pipes so that the transverse cross section of the pump pipe connecting part does not need to be greatly enlarged. Second, it prevents the connection force of the pump pipe connecting from being uneven and goes underground along the pump pipe. It is to provide a means for fixing / protecting the extended electrical wiring.

The first of the above technical problems, the engaging contact end formed integrally at each end of the upper pipe and the lower pipe, a pair of fasteners respectively fitted to the upper pipe and the lower pipe so as to be caught by the engaging contact end, and the packing on the inner side It is achieved by the connection structure of the groundwater pumping pipe consisting of a connector fitted with a member and screwed to the fastener. In addition, the second object is achieved by the connection structure of the groundwater pumping pipe is formed so that the wiring protection end protrudes outward so that the electric wiring is inserted into the outer surface of the connector in the longitudinal direction.

1 is a longitudinal sectional view of a groundwater well according to a conventional pumping pipe connection structure.

2 is a cross-sectional view of FIG. 1.

3A is a cross-sectional view taken along line A-A 'of FIG. 2, and FIG. 3B is a cross-sectional view taken along line B-B' of FIG.

4 is a perspective view showing a pumping pipe connection structure according to the present invention.

Figure 5 is a longitudinal cross-sectional view showing a positive pipe connection structure according to the present invention.

Figure 6 is a longitudinal cross-sectional view of the groundwater wells using the pump pipe structure of the present invention.

7 is a longitudinal sectional view showing another embodiment of the connector of the present invention.

* Explanation of symbols for main parts of the drawings

10: upper pipe 20: lower pipe

12,22: fastener 14,24: close contact

30: connector 30a: seating end

32: packing member 34: wiring protection end

40: electric wiring

The connection structure of the groundwater pumping pipe of the present invention is described with reference to FIGS. 4 to 7 as follows.

4 is an exploded perspective view showing the pumping pipe connecting structure according to the present invention, Figure 5 is a longitudinal sectional view showing the pumping pipe connecting structure according to the present invention, Figure 6 is a groundwater using the pumping pipe connecting structure of the present invention This is a longitudinal section of the well. 7 is a longitudinal sectional view showing another embodiment of the connector of the present invention.

The connection structure of the groundwater pumping pipe of the present invention is hooked to the close contact ends 14 and 24 formed integrally at the ends of each of the upper pipe 10 and the lower pipe 20, and the locking close ends 14 and 24. It consists of a pair of fasteners 12 and 22 fitted to the upper pipe 10 and the lower pipe 20, respectively, and a connector 30 screwed to the fasteners 12 and 22.

In more detail, the pair of connectors 12 and 22 are formed in a polygonal column shape such that one end thereof is formed in a cylindrical shape, the outer circumferential surface thereof is screwed, and the other end is easily connected using a tool. It is formed to have an inner diameter that can be fitted to the outer diameter of the lower pipe 20 and the lower end of the pipe 10, respectively.

At the ends of the upper pipe 10 and the lower pipe 20 in which the fasteners 12 and 22 are fitted, the locking contact ends 14 and 24 are integrally formed to protrude in the outer diameter direction, respectively. 14 and 24 are integrally formed by being fixed to the ends of the upper pipe 10 and the lower pipe 20 by welding or the like.

The connector 30 is threaded from the both ends to the seating end 30a of the center portion to be fastened to the fasteners 12 and 22, and the seating end 30a is formed to protrude in the inner diameter direction. Annular packing members 32 are fitted to both sides of the seating end 30a, respectively. The outer surface of the connector 30 is formed in the shape of a polygonal column to facilitate the connection work using a tool.

In addition, according to one embodiment of the connector 30 according to the present invention shown in Figures 4 to 6 of the accompanying drawings, a power line connected to the submersible pump 50 on one side of the outer surface of the connector 30 ( 42 and the wiring protection end 34 are extended outward in the longitudinal direction of the positive pipe so that the electric wiring 40 including the signal line 44 connected to the high water level measuring instrument 52 and the low water level measuring instrument 54 is inserted therebetween. It is formed to protrude. At this time, the interval between the two protrusions of the wire protection end 34 is formed at a predetermined interval to which the electric wiring 40 can be fitted and fixed, and the height of the protrusion is directly connected to the casing C. It is formed slightly higher than the height of the electrical wiring 40 so as not to be rubbed.

Of course, the connector may be provided with a plurality of wiring protection ends, and as shown in another embodiment of the connector shown in FIG. 7, two wiring protection ends 34A and 34B may be formed from the outer surface of the connector 30. It is formed to be spaced apart at a predetermined interval, the power line 42 and the high, low water level meter connected to the submersible pump 50 to supply power in the electrical wiring passing through the connector of the upper pipe 10 and the lower pipe 20 Fixing and protecting the wiring of the signal line 44 connected to the 52 and 54 may be performed separately.

The upper pipe 10 so as to be caught by the upper pipe 10 and the lower pipe 20 and the locking contact ends 14 and 24 formed integrally with the locking contact ends 14 and 24 forming the pump pipe connection structure of the present invention. And a coupling process of the pair of fasteners 12 and 22 fitted to the lower pipe 20 and the connector 30 screwed to the fasteners 12 and 22, respectively, with reference to FIG. The explanation is as follows.

A connector in which the packing member 32 is fitted to both sides between the upper pipe 10 and the lower pipe 20 in which a pair of fasteners 12 and 22 are fitted and the locking contact ends 14 and 24 are integrally formed. 30 is connected to and coupled to the upper pipe 10 so that the engaging close ends 14 and 24 are in close contact with both sides of the packing member 32 supported by the seating end 30a of the connector 30. The upper pipe 10 and the lower pipe 20 are screwed by fastening the fasteners 12 and 22 fitted into the lower pipe 20 toward the packing member 32 at the center from both ends of the inner surface of the connector 30. It is connected.

Referring to the action according to the connection structure of the groundwater pumping pipe of the present invention as shown in Figures 4 to 6 as follows.

First, looking at the process of connecting the upper pipe 10 and the lower pipe 20 in the connecting body of the positive pipes, the fasteners 12, respectively at the lower end of the upper pipe 10 and the upper end of the lower pipe 20 22) and the threaded parts are respectively opposed to each other, and the locking contact ends 14 and 24 are fixed to the lower end of the upper pipe 10 and the upper end of the lower pipe 20 by welding or the like. When formed, the fastening fasteners 12 and 2 are engaged with the locking close ends 14 and 24 so that the fasteners 12 and 2 are separated from the ends of the upper pipe 10 and the lower pipe 20 so as not to be separated.

Then, when the threaded portions of the fasteners 12 and 22 fitted to the upper pipe 10 and the lower pipe 20 are screwed from both ends of the inner surface of the connector 30, the upper pipe 10 and the lower pipe ( Each of the engaging close ends 14 and 24 coupled to 20) protrude in the inner diameter direction from the inner surface of the connector 30, and the engaging close ends 14 and 24 protrude in the inner diameter direction from the inner surface of the connector 30. The upper pipe 10 and the lower pipe 20 are connected while the watertight action is in close contact with the packing member 32 supported by the end 30a, and the connection action is a longitudinal surface along the positive pipe, That is, it occurs in the screw coupling portion of the inner surface of the connector 30 and the outer peripheral surface of the fasteners (12, 22).

Therefore, even if the depth of development of the groundwater increases so that a stronger connection force is required between the pumping pipes, the diameter of the connector 30 does not need to be enlarged, and thus the cross section of the casing C and the excavation hole H is increased. Without causing the problem that the diameter is enlarged, simply extend the connector 30 and the fasteners 12 and 22 in the longitudinal direction to reduce the area of the screwed portion of the inner surface of the connector 30 and the outer peripheral surface of the fasteners 12 and 22. The problem of increasing the connecting force can be solved by increasing the lengthwise direction.

Of course, the pump pipe formed separately from the connector 30 or the fasteners 12 and 22 also does not need to increase the diameter or thickness of the cross section. In this case, the outer surfaces of the fasteners 12 and 22 and the connector 30 are formed in the shape of a polygonal column to facilitate the use of such a tool for screwing, and also to apply a stronger connection force. .

As such, the casing of the excavation hole (H) in which the excavation work and the casing work are completed by connecting the submersible pump 50 to one end of the connecting pipe of the positive pipe in which the plurality of upper pipes 10 and the lower pipes 20 are sequentially interconnected. (C) is installed downward downward toward the underground reservoir (R), in this case the power line 22 and the water pump 50 is connected to supply power for driving the motor of the submersible pump (50) Electric wiring 40 also includes a signal line 44 connected to the high water level measuring instrument 52 and the low water level measuring instrument 54 installed at a specific position of the excavation hole (H) for controlling the water level of the groundwater level The electric wire 40 is casing (C) in the installation process of the positive pipe by being fitted and secured to the wire protection end 34 protruding from the outer surface of the connector 30 according to the present invention while descending along one side of the positive pipe. Friction with) It is to prevent the disconnection or short circuit due to the impact of. In addition to this, it is possible to increase the fixing and protection action of the electrical wiring 40 fitted to the wiring protection end 34 by taping.

In addition, since the wire protection end 34 for fixing and protecting the electric wiring 40 is formed on the outer surface of the connector 30, the inner surface and the fastener ( 12, 22 and the connection force between the positive and negative pipes connected regardless of the fastening force of the engaging close ends (14, 24), etc., does not occur.

Of course, in the case of another embodiment of the connector 30 according to the present invention shown in Figure 7 of the accompanying drawings, the fixing and protection of the separate power line 42 and the signal line 44 is carried out at the two wiring protection stages 34A and 34B. Except that made separately, the same operation as described above.

According to the present invention, the connecting action of the upper pipe and the lower pipe occurs on the longitudinal surface along the positive pipe, that is, on the threaded portion of the inner surface of the connector and the outer circumferential surface of the fastener, so that the connecting action is performed in the transverse plane in the conventional flange connection structure. Unlike this case, even if the required connection force increases with the increase of the depth of groundwater development, the area of the connection can be enlarged only in the longitudinal direction to support the increased required connection force. Since the cross section does not need to be enlarged together, the cross section of the pump pipe connection including the connector can be greatly reduced and the cross section of the casing and the excavation hole can be reduced compared to the conventional flange connection without affecting the pumping capacity. The ease of installation and excavation work and economics can be improved.

And, according to the present invention in which the fastener and the connector are separated from the positive pipe, unlike the conventional flange connection formed integrally with the positive pipe, the thickness of the positive pipe does not need to be increased even when the required connecting force is increased. Self-weight reduction and cost reduction are provided, and in case of using a submersible pump, electrical wiring including a power line connected to the submersible pump located at the bottom of the pump pipe from the ground is formed to protrude from the outer side of the connector of the present invention. When it is fixed to the protective end, the hassle of separately cutting the wire passage part on one side of the flange is eliminated in the conventional structure, and connection force unevenness between pumping pipes caused by weakening in the cut wire passage part is not generated. Effects are also provided.

Claims (3)

In the connection structure of the pumping pipe for groundwater, the catching close ends 14 and 24 integrally formed at the ends of each of the upper pipe 10 and the lower pipe 20 and the catching close ends 14 and 24. And a pair of fasteners 12 and 22 fitted to the upper pipe 10 and the lower pipe 20, and a connector 30 to which both ends are screwed to the fasteners 12 and 22, respectively. Connection structure of pumping pipe for groundwater. 2. The fasteners 12 and 22 are screwed at one end of the outer circumferential surface thereof, and the fastening ends 14 and 24 are fitted with the upper pipe 10 and the lower pipe to which the fasteners 12 and 22 are fitted. It is formed integrally to protrude in the outer diameter direction at each end of the 20, the connector 30 is screwed on the inner surface to screw the fasteners (12, 22) and the mounting end (30a) in the center of the inner surface This projecting structure is connected to the ground water pumping pipe, characterized in that the packing member 32 is fitted to both sides of the seating end (30a) is formed. According to claim 1 or claim 2, Ground protection pumping water characterized in that the wire protection end 34 is formed to protrude to the outside so that the electric wiring 40 is fitted to the outer surface of the connector 30 in the longitudinal direction Pipe connection structure.