CN220566493U - Buffer for slurry pump for petroleum exploitation - Google Patents

Abstract

The utility model discloses a buffer for a slurry pump for petroleum exploitation, which relates to the technical field of petroleum equipment, in particular to a buffer for a slurry pump for petroleum exploitation, comprising a shell, and a slurry inlet chamber, a buffer chamber and a slurry outlet chamber which are positioned in the shell, wherein the slurry inlet chamber, the buffer chamber and the slurry outlet chamber are sequentially communicated, a first bottom sealing pipe is arranged at the communication part of the slurry inlet chamber and the buffer chamber, a slurry penetrating hole is formed in the surface of the first bottom sealing pipe, and a buffer bowl is arranged in the first bottom sealing pipe. This buffer for oil development slush pump through setting up back cover pipe one, and when mud flows in from advance the thick liquid room to the buffer chamber, mud needs to pass through the thick liquid hole one on a surface of back cover pipe earlier, and the thick liquid hole one is divided into little thigh with mud, can carry out preliminary buffering to mud, later mud needs to pass through the inside buffer bowl of back cover pipe one, and mud can form local backward flow in buffer bowl department, and the mud of backward flow can collide each other with ascending mud, further buffers mud.

Description

Buffer for slurry pump for petroleum exploitation

Technical Field

The utility model relates to the technical field of petroleum equipment, in particular to a buffer for a slurry pump for petroleum exploitation.

Background

A mud pump is a machine that delivers flushing fluid such as mud or water into a borehole during drilling. Mud pumps are an important component of drilling equipment.

In normal circulation drilling, the surface flushing medium-clear water, slurry or polymer flushing fluid is directly sent to the bottom end of a drill bit through a high-pressure hose, a tap and a drill string central hole under a certain pressure, so as to achieve the purposes of cooling the drill bit, removing and conveying the cut rock scraps to the surface.

In the construction of freezing and drilling a shaft, the serious vibration of a slurry pipeline, the ground and equipment friction are caused by the large flow pulse change amplitude of a slurry pump, and the pressure of the bottom of a hole is not stable in the drilling process, so that the drilling is easy to deviate. Patent publication No. CN203925348 proposes a buffer for a slurry pump of a drilling machine, wherein a lower opening of a cylinder is sealed and fixed on a base, an upper opening of the cylinder is sealed and fixed on a cover plate, the cylinder is provided with a closed cavity, a cylindrical surface of the cylinder is provided with an inlet interface and an outlet interface, and the inlet interface and the outlet interface are communicated with the closed cavity. The device utilizes the principles of air pressurization volume reduction and decompression volume expansion, serially connects a buffer in a slurry pipeline, and utilizes air as a buffer to relieve the conditions of slurry pipeline vibration, friction phenomenon and unstable hole bottom pressure supply caused by large flow pulse variation amplitude of a slurry pump. When the structure is in practical use, the air is used as a buffer, so that the vibration and friction phenomena of the slurry pipeline caused by large flow pulse change amplitude of the slurry pump are relieved, the air tightness sealing requirement on the cylinder body is very high, the process requirement is high, the processing is difficult, otherwise, the buffer effect is poor, and the effect of relieving the slurry flow pulse cannot be achieved. For this purpose we provide a buffer for a slurry pump for oil exploitation.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a buffer for a slurry pump for oil exploitation, which solves the problems in the prior art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a buffer for oil development slush pump, includes casing and is located inside advance thick liquid room, buffer chamber, the play thick liquid room of casing, advance thick liquid room, buffer chamber, play thick liquid room and communicate in proper order, advance the intercommunication department of thick liquid room and buffer chamber and install back cover pipe one, the thick liquid hole one has been seted up on the surface of back cover pipe one, back cover pipe two is installed to the internally mounted of back cover pipe one, the internally mounted of back cover pipe two has the buffer board, the buffer hole has been seted up to the inside of buffer board, the thick liquid hole two has been seted up on the surface of back cover pipe two lower halves.

Optionally, the buffer chamber is located the first half of casing, advance the lower half of casing of thick liquid room and play thick liquid room bisection, advance the side of thick liquid room and be connected with into the interface, the side of buffer chamber is connected with out the interface.

Optionally, the first slurry permeable hole is distributed at the lower half part of the first bottom sealing tube, the buffer bowl is located at the upper half part of an inner cavity of the first bottom sealing tube, the buffer bowl is of a bottomless bowl-shaped structure, and a plurality of buffer bowls are distributed at equal intervals up and down.

Optionally, the inside of buffer chamber is provided with the nitrogen gas gasbag, the top and the roof adhesion of buffer chamber are in the same place of nitrogen gas gasbag, and the bottom of nitrogen gas gasbag is laminated with the diapire of buffer chamber under the normal pressure state.

Optionally, the first back cover pipe is located in the pulp inlet chamber, the top of the first back cover pipe is communicated with the buffer chamber, the second back cover pipe is located in the pulp outlet chamber, and the top of the second back cover pipe is communicated with the buffer chamber.

Optionally, the buffer board is located the first half of two inner chambers of back cover pipe, the buffer board has a plurality ofly and about equidistant distribution to the inside buffer hole staggered distribution of adjacent buffer board.

Optionally, the inside activity of back cover pipe two has cup jointed the baffle, the bottom of baffle is connected with the pressure spring, the bottom of pressure spring is in the same place with the bottom of back cover pipe two.

The utility model provides a buffer for a slurry pump for petroleum exploitation, which has the following beneficial effects:

1. this buffer for oil development slush pump through setting up back cover pipe one, and when mud flows in from advance the thick liquid room to the buffer chamber, mud needs to pass through the thick liquid hole one on a surface of back cover pipe earlier, and the thick liquid hole one is divided into little thigh with mud, can carry out preliminary buffering to mud, later mud needs to pass through the inside buffer bowl of back cover pipe one, and mud can form local backward flow in buffer bowl department, and the mud of backward flow can collide each other with ascending mud, further buffers mud.

2. This buffer for oil development slush pump through setting up the nitrogen gas gasbag in the inside of buffer chamber, can compress the nitrogen gas gasbag when mud enters into the buffer chamber, utilizes the nitrogen gas gasbag to carry out further buffering to mud, and the technological requirement is low, and processing is simple, and the buffering is effectual, through setting up the back cover pipe two, when mud flows in to the play thick liquid room from the buffer chamber, and mud needs to pass through the buffer plate, and the buffer plate can carry out the buffering of palace to mud again, alleviates mud pipeline vibrations, the friction phenomenon that the impulse change range of slush pump flow caused greatly.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the structure of the nitrogen balloon of the present utility model when compressed;

FIG. 4 is a schematic view of the structure of the buffer bowl of the present utility model;

FIG. 5 is a schematic view of the structure of the buffer plate of the present utility model.

In the figure: 1. a housing; 2. an inlet port; 3. a pulp inlet chamber; 4. a buffer chamber; 5. a pulp outlet chamber; 6. an outlet interface; 7. a first bottom sealing pipe; 8. a pulp penetration hole I; 9. a buffer bowl; 10. a nitrogen balloon; 11. a second bottom sealing pipe; 12. a buffer plate; 13. buffering holes; 14. a partition plate; 15. a pressure spring; 16. and a pulp penetration hole II.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 2, the present utility model provides a technical solution: the utility model provides a buffer for oil exploitation slush pump, including casing 1 and be located the inside advance thick liquid room 3 of casing 1, buffer chamber 4, go out thick liquid room 5, advance thick liquid room 3, buffer chamber 4, go out thick liquid room 5 and communicate in proper order, buffer chamber 4 is located the first half of casing 1, advance thick liquid room 3 and go out thick liquid room 5 halving the lower half of casing 1, advance the side of thick liquid room 3 and be connected with into interface 2, the side of buffer chamber 4 is connected with out interface 6, the mud flows into thick liquid room 3 from advancing interface 2, flows into buffer chamber 4 again by advance thick liquid room 3, then flows into out thick liquid room 5 by buffer chamber 4, finally flows out from out interface 6.

Referring to fig. 2 and 4, a bottom sealing tube 7 is installed at the connection position between the pulp inlet chamber 3 and the buffer chamber 4, the bottom sealing tube 7 is located in the pulp inlet chamber 3, the top of the bottom sealing tube 7 is communicated with the buffer chamber 4, a pulp penetration hole 8 is formed in the surface of the bottom sealing tube 7, when the slurry passes through the pulp penetration hole 8 on the surface of the bottom sealing tube 7, the slurry is divided into small strands by the pulp penetration hole 8, the slurry can be primarily buffered, a buffer bowl 9 is installed in the bottom sealing tube 7, the pulp penetration hole 8 is distributed at the lower half of the bottom sealing tube 7, the buffer bowl 9 is located at the upper half of the inner cavity of the bottom sealing tube 7, the buffer bowl 9 is of a bottomless bowl-shaped structure, when the slurry flows upwards from the buffer bowl 9, the slurry forms local backflow in a gap between the buffer bowls 9, the backflow slurry collides with the ascending slurry, the slurry is further buffered, and the slurry is distributed at equal intervals up and down.

Referring to fig. 2 to 3, a nitrogen gas bag 10 is disposed in the buffer chamber 4, the top of the nitrogen gas bag 10 is adhered to the top wall of the buffer chamber 4, the bottom of the nitrogen gas bag 10 is adhered to the bottom wall of the buffer chamber 4 in a normal pressure state, and the nitrogen gas bag 10 is disposed to compress the nitrogen gas bag 10 when slurry enters the buffer chamber 4, so that the nitrogen gas bag 10 is used for further buffering the slurry.

Referring to fig. 2 and 5, a second bottom sealing tube 11 is installed at the connection position between the buffer chamber 4 and the slurry outlet chamber 5, the second bottom sealing tube 11 is located in the slurry outlet chamber 5, the top of the second bottom sealing tube 11 is communicated with the buffer chamber 4, a buffer plate 12 is installed inside the second bottom sealing tube 11, the buffer plate 12 is arranged to block slurry, vibration and friction phenomena of a slurry pipeline caused by large flow pulse amplitude of a slurry pump are relieved, buffer holes 13 are formed in the buffer plate 12, the buffer plate 12 is located at the upper half part of an inner cavity of the second bottom sealing tube 11, the buffer plates 12 are distributed at equal intervals up and down, buffer holes 13 in the adjacent buffer plates 12 are distributed in a staggered mode, and the buffer holes 13 distributed in a staggered mode increase the obstruction of slurry flowing, so that the amplitude of the slurry flow pulse is relieved.

Referring to fig. 2 and 3, a partition plate 14 is movably sleeved in the second back cover pipe 11, a pressure spring 15 is connected to the bottom of the partition plate 14, the bottom of the pressure spring 15 is connected to the bottom of the second back cover pipe 11, downward mud can impact the partition plate 14 by arranging the partition plate 14, the partition plate 14 can move up and down under the action of the pressure spring 15, reverse acting force is continuously given to the mud, impact force of the mud is reduced, and a second mud penetrating hole 16 is formed in the surface of the lower half of the second back cover pipe 11.

In summary, when the buffer for the oil exploitation slurry pump is used, slurry enters the slurry inlet chamber 3 from the inlet port 2, then flows into the buffer chamber 4 from the slurry inlet chamber 3, when the slurry passes through the slurry penetrating hole I8 on the surface of the bottom sealing pipe I7, the slurry is divided into small strands by the slurry penetrating hole I8, preliminary buffering is carried out on the slurry, then the slurry passes through the buffer bowl 9, part of the slurry enters a gap between the buffer bowls 9 and forms local reflux, the refluxed slurry collides with the ascending slurry, the effect of further buffering is achieved, the slurry can impact and compress the nitrogen gas bag 10 after entering the buffer chamber 4, the slurry is buffered by the nitrogen gas bag 10, then flows into the slurry outlet chamber 5 from the buffer chamber 4, the buffer plate 12 can form blocking and buffering on the slurry, the flow pulse change amplitude of the slurry pump is relieved, and finally the slurry flows out from the outlet port 6.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a buffer for oil development slush pump, includes casing (1) and is located inside advance thick liquid room (3), buffer chamber (4), the play thick liquid room (5) of casing (1), its characterized in that: the utility model discloses a pulp grinder, including pulp inlet room (3), buffer room (4), play pulp room (5), pulp inlet room (3) and buffer room (4) intercommunication department installs back cover pipe (7), the surface of back cover pipe (7) has been seted up and has been penetrated thick liquid hole (8), internally mounted of back cover pipe (7) has buffering bowl (9), back cover pipe two (11) are installed to the intercommunication department of buffer room (4) and play pulp room (5), the internally mounted of back cover pipe two (11) has buffer board (12), buffer hole (13) have been seted up to the inside of buffer board (12), the surface of back cover pipe two (11) lower half has been seted up and has been penetrated thick liquid hole two (16).

2. A buffer for a slurry pump for oil exploitation according to claim 1, wherein: the buffer chamber (4) is located at the upper half part of the shell (1), the pulp inlet chamber (3) and the pulp outlet chamber (5) are equally divided into the lower half part of the shell (1), the side face of the pulp inlet chamber (3) is connected with the inlet port (2), and the side face of the buffer chamber (4) is connected with the outlet port (6).

3. A buffer for a slurry pump for oil exploitation according to claim 1, wherein: the first slurry penetrating holes (8) are distributed at the lower half part of the first bottom sealing pipe (7), the buffer bowl (9) is located at the upper half part of the inner cavity of the first bottom sealing pipe (7), the buffer bowl (9) is of a bottomless bowl-shaped structure, and the buffer bowls (9) are distributed in a plurality of modes and at equal intervals up and down.

4. A buffer for a slurry pump for oil exploitation according to claim 1, wherein: the inside of buffer chamber (4) is provided with nitrogen gas gasbag (10), the roof adhesion of nitrogen gas gasbag (10) and buffer chamber (4) is in the same place, and the bottom of nitrogen gas gasbag (10) is laminated with the diapire of buffer chamber (4) under the normal pressure state.

5. A buffer for a slurry pump for oil exploitation according to claim 1, wherein: the first back cover pipe (7) is located in the pulp inlet chamber (3), the top of the first back cover pipe (7) is communicated with the buffer chamber (4), the second back cover pipe (11) is located in the pulp outlet chamber (5), and the top of the second back cover pipe (11) is communicated with the buffer chamber (4).

6. A buffer for a slurry pump for oil exploitation according to claim 1, wherein: the buffer plates (12) are positioned at the upper half part of the inner cavity of the back cover tube II (11), the buffer plates (12) are distributed at equal intervals up and down, and buffer holes (13) in the adjacent buffer plates (12) are distributed in a staggered mode.

7. A buffer for a slurry pump for oil exploitation according to claim 1, wherein: the inside activity of back cover pipe two (11) has cup jointed baffle (14), the bottom of baffle (14) is connected with pressure spring (15), the bottom of pressure spring (15) is in the same place with the bottom of back cover pipe two (11).