KR20190047225A - Mud mixing apparatus with a piping agitator - Google Patents

Abstract

The present invention relates to a mud mixing apparatus for manufacturing a mud used as a lubricant for a drill bit used in a drilling facility. More particularly, the present invention relates to the mud mixing apparatus having a piping agitator comprising: a mud tank; a stirrer provided inside the mud tank and rotating to mix an introduced mud; a housing connected to a mud inlet pipe connected to the mud tank; an impeller mounted inside the housing; and an agitator having a spiral wing connected to an outlet side of the impeller.

Description

[0001] MUD mixing apparatus with piping agitator [0002]

The present invention relates to a mud mixing apparatus for producing a mud used as a lubricant for a drill bit used in a drilling rig.

As depletion of underground resources on land has increased and interest in undersea resources has increased, various offshore plants are under study to develop seabed resources. Among marine plants, drilling rigs, semi-submersible drilling rigs, and jack-up rigs are examples of drilling equipment.

The drilling rig is equipped with a drill pipe with a drill bit at the end. A mud is used as the drilling fluid of the drill bit. The mud includes barite, bentonite, etc., stored in a mud tank mounted on a drilling rig, and circulated to a drill bit by a mud pump.

The mixing device is important because the mud supplied by the drill bit must be uniform, and the equipment is often constructed so that what is called an agitator or edge device is installed inside the mud tank.

Usually, mud is made into a liquid state in liquid state by mixing a solid material such as bentonite or barite with water. Therefore, the solid component bentonite should be mixed well with water, and the composition of the mud stored in the mud tank should be maintained uniformly throughout.

As a prior art related to the present invention, there is a " mixed liquid stirring apparatus " of Korean Patent No. 10-1625636.

FIG. 1 is a schematic block diagram of a mixed liquid stirring apparatus according to the prior art. As shown in FIG. 1, the mixed liquid stirring apparatus includes a tank unit for storing a mixed liquid therein; An impeller stirring the mixed liquid by rotating in the tank part; The impeller includes a cylindrical first member that rotates in conjunction with a rotating shaft, and the impeller rotatably supports the impeller. The impeller includes a cylindrical impeller housing having the lower end opened and the upper end having a hole. And

And a second member projecting spirally along an outer circumferential surface of the first member so as to be disposed in a space between the cylindrical first member and the cylindrical impeller housing, and as the cylindrical first member rotates, the impeller The mixed liquid flowing into the space through the opened lower end of the housing rises in pressure inside the upper end of the impeller housing and is injected at a high speed through the holes to the outside of the impeller housing.

In the case of the prior art, the mixed liquid stored or supplied in the tank portion is allowed to flow continuously so that the uniformity of the entire mud can be maintained.

However, when bentonite or the like, which is a solid material supplied during the process of manufacturing the mud, is formed as a lump, the mud may fall on the bottom of the tank and may not mix with water.

Korean Patent No. 10-1625636

Accordingly, the present invention provides a mud mixing device, which is capable of mixing more aggressively during the process of transferring the solid raw material and water to the mud tank, thereby enabling production of high quality mud, .

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a mud mixing apparatus having a piping agitator according to the present invention. A stirrer provided inside the mud tank and rotated to mix the introduced mud; A housing connected to the mud inlet pipe connected to the mud tank; An impeller mounted inside the housing; And an agitator having a helical blade connected to an outlet side of the impeller.

Preferably, the housing is connected to the mud inlet pipe, and is located outside or inside the mud tank.

Preferably, the housing includes a first housing and a second housing connected to each other through a flange, a support plate sandwiched between the flanges, a center of the support plate being an opening, and a support bushing And is installed through a connecting arm.

Preferably, the agitator comprises: a center shaft; A supporting end formed at one end of the center shaft and having an outer diameter larger than that of the center shaft and inserted into the supporting bushing; And a plurality of helical vanes formed while forming a spiral around the center axis.

Preferably, an impeller connecting port is formed at an end surface of the supporting end so that the impeller can be coupled.

According to the mud mixing apparatus having the piping agitator according to the present invention, it is possible to produce a high quality mud inside the mud tank by inducing the solid component and the liquid component to be mixed more smoothly during the supply of the raw materials for manufacturing the mud .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a prior art mixed liquid stirring apparatus; FIG.
Fig. 2 is an overall configuration view of a mud mixing apparatus having a piping agitator according to a first preferred embodiment of the present invention; Fig.
Fig. 3 is an overall configuration view of a mud mixing apparatus having a piping agitator according to a second embodiment of the present invention; Fig.
FIG. 4 is a perspective view of a housing and an internal structure of the housing of the present invention; FIG.
5 is an exploded perspective view of Fig.
6 is an exploded perspective view showing a coupling relationship between the impeller and the agitator provided inside the housing.
7 is an enlarged cross-sectional view of the impeller and the supporting end.

Hereinafter, a mud mixing apparatus having a piping agitator according to the present invention will be described in more detail with reference to the accompanying drawings. It should be understood, however, that the drawings and detailed description thereof illustrate one feasible example according to the technical idea of the present invention, and the technical scope of protection of the present invention is not limited thereto.

FIG. 2 is an overall configuration diagram of a mud mixing device having a piping agitator according to a first preferred embodiment of the present invention, FIG. 3 is a schematic view showing the entire configuration of a mud mixing device having a piping agitator according to a second embodiment of the present invention 4 is an exploded perspective view of the housing and FIG. 5 is an exploded perspective view of FIG. 4, and FIG. 6 is a cross-sectional view illustrating an engaging relationship between the impeller and the agitator provided inside the housing. And FIG. 7 is an enlarged sectional view of the impeller and the supporting end.

As shown in the drawing, a mud mixing apparatus having a piping agitator according to the present invention (hereinafter referred to as a mud mixing apparatus) includes a mud tank 100, a stirrer 200, a housing 300, an impeller 400, 500).

The mud tank 100 is a large container having an empty space therein, and at least one mud outlet pipe 10 and a mud inlet pipe 20 are provided. Preferably, the mud stored in the mud tank 100 can be circulated through the mud outlet pipe 10 and the mud inlet pipe 20 so that the composition of the mud can be kept more uniform.

In the mud tank 100, a rotating stirrer 200 is provided, and the stirrer 200 may be a rotating body having a plurality of blades.

Basically, the mud introduced into the mud tank 100 by the stirrer 200 installed in the mud tank 100 is mixed.

Particularly, in the present invention, the housing 300, the impeller 400, and the agitator 500 are installed in the mud inlet pipe 20 connected to the mud tank 100, So that the components and the liquid components can be intensively mixed with each other.

The housing 300 connected to the mud inlet pipe 20, the impeller 400, and the agitator 500 may be mounted outside or inside the mud tank 100.

A case where the housing 300 and the like are provided outside the mud tank 100 will be described in detail as a first embodiment.

≪ Embodiment 1 >

A mud tank 100 is provided and an agitator 200 rotating in the center of the inside of the mud tank 100 is provided. The mud inlet pipe 20 is connected to the upper part of the mud tank 100. The mud outlet pipe 10 is connected to the lower part of the mud tank 100. The mud inlet pipe 20, And a pump 30 and an ejector 40 are provided on the connection pipe.

A solid component is dropped from the upper side of the ejector 40 and water is supplied from one side of the ejector 40 so that the solid component and the liquid component serving as the raw material by the ejector 40 are supplied toward the mud inlet pipe 20 together.

The solid component and the liquid component are moved to some extent by the ejector 40 while being mixed with each other. The housing 300 is connected immediately before being introduced into the mud tank 100 in order to perform a more reliable mixing operation.

That is, the housing 300 is connected to the mud inlet pipe 20 and the mud tank 100, and the impeller 400 and the agitator 500 are provided in the housing 300, The mixture is mixed through the agitator 500 connected to the outlet side of the impeller 400 after passing through the agitator 400.

Preferably, the housing 300 is divided into a first housing 300a and a second housing 300b. The first housing 300a and the second housing 300b are connected to each other through a flange 310.

The supporting plate 320 is inserted between the flanges 310 and the center of the supporting plate 320 is formed as an opening and the supporting bushing 330 is fixed to the center of the opening by the connecting arm 340.

The supporting bushing 330 provided at the center of the opening is fixed by two connecting arms 340 and the supporting bushing 330 is for installing the agitator 500 and the impeller 400.

The agitator 500 installed inside the housing 300 may include a center shaft 510, a support end 520, and a spiral wing 530.

The support shaft 520 has an outer diameter larger than that of the center shaft 510 and a support shaft 520 is formed at one end of the center shaft 510. The support shaft 520 has a larger diameter than the center shaft 510, As shown in Fig. The support bushing 330 serves as a bearing for smooth rotation of the impeller 400 and the agitator 500.

The helical wings 530 are formed in a spiral around the center axis 510 and may be provided with a plurality of helical blades 530.

The agitator 500 and the impeller 400 are connected to each other and rotated. For this purpose, the impeller 400 is coupled to the end of the supporting end 520 to form an impeller connection port 521. The impeller connecting hole 521 may be formed of a female screw capable of being screwed, and a known means for connecting the other shaft and the shaft may be utilized. In this embodiment, a female screw having a predetermined depth is formed on the end surface of the support end 520 to fasten the shaft of the impeller 400.

The impeller 400 and the agitator 500 are installed in the housing 300 so that the mud components flowing toward the mud tank 100 pass through the impeller 400. At this time, Accordingly, the agitator 500 is also rotated so that the mud components are intensively stirred so as to be uniformly mixed.

Since the mud components are intensively mixed by the impeller 400 and the agitator 500 inside the housing 300 immediately before the mud components are introduced into the mud tank 100, the solid components constituting the mud are surely pulverized, Mixing is done.

Since the mud that has been intensively stirred in the housing 300 and then introduced into the mud tank 100 is mixed again by the stirrer 200, it is possible to produce a mud of good quality having a uniform composition.

≪ Embodiment 2 >

Next, a second embodiment of the present invention will be described.

FIG. 11 is a view showing the entire construction of the present invention according to the second embodiment. In the second embodiment, the housing 300 is located inside the mud tank 100.

A mud inlet pipe 20 connected to the mud tank 100 extends into the inside of the mud tank 100. A housing 300 is connected to an end of the mud tank 100. The impeller 400 and the agitator 500 are mounted.

The structure and operation principle of the impeller 400 and the agitator 500 installed in the housing 300 are the same as those of the first embodiment, and reference is made to this.

As described above, the mud mixing device having the piping agitator according to the present invention allows intensive mixing of a solid component for producing a mud with water, and smoothly lumps solid solid components to be mixed with water, Mud production becomes possible.

The present invention is suitable for use as a facility for manufacturing industrially necessary mud.

100: Mud tank
200: stirrer
300: housing
300a: first housing 300b: second housing
310: flange 320: support plate
330: support bushing 340: connection arm
400: impeller
500: agitator
510: center shaft 520: support end
521: Impeller connecting port 530: Spiral wing
10: Mud drainage pipe
20: Mud inlet pipe
30: Pump
40: Ejector

Claims (5)

Mud Tank;
A stirrer provided inside the mud tank and rotated to mix the introduced mud;
A housing connected to the mud inlet pipe connected to the mud tank;
An impeller mounted inside the housing;
And an agitator having a helical blade connected to the outlet side of the impeller. The method according to claim 1,
The housing includes:
Wherein the mud tank is connected to the mud inlet pipe and is located outside or inside the mud tank. 3. The method of claim 2,
The housing includes:
The first housing and the second housing are connected to each other through a flange, a support plate is inserted between the flanges, the center of the support plate is formed as an opening, and a support bushing is installed through the plurality of connection arms at the center of the opening Wherein the mud mixing device has a piping agitator. The method of claim 3,
The above-
Center axis;
A supporting end formed at one end of the center shaft and having an outer diameter larger than that of the center shaft and inserted into the supporting bushing;
And a plurality of helical vanes formed in a spiral around the center axis. ≪ RTI ID = 0.0 > 11. < / RTI > 5. The method of claim 4,
And an impeller coupling port is formed at an end surface of the support end so that the impeller can be coupled.

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