CN210195950U - Flow pulse suppression device and fracturing equipment - Google Patents
Flow pulse suppression device and fracturing equipment Download PDFInfo
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- CN210195950U CN210195950U CN201921233888.8U CN201921233888U CN210195950U CN 210195950 U CN210195950 U CN 210195950U CN 201921233888 U CN201921233888 U CN 201921233888U CN 210195950 U CN210195950 U CN 210195950U
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Abstract
The utility model provides a flow pulse suppression device and a fracturing device, relating to the technical field of fracturing devices, wherein the flow pulse suppression device comprises an energy accumulator; the energy accumulator comprises a plug body, a rod body and a cylinder body; the rod body is fixedly connected with the plug body and is used for being connected with the hydraulic end of the plunger pump; the plug body is arranged in the cylinder body in a sliding manner; the area of the end face, facing the hydraulic end of the plunger pump, of the rod body is smaller than the area of the end face, far away from the rod body, of the plug body; the end face of the stopper body far away from the rod body and the cylinder body form a rodless cavity, an energy storage piece is arranged in the rodless cavity, the energy storage piece can be compressed by the stopper body for energy storage, and the energy storage piece can expand to release energy so as to drive the stopper body to move. According to the flow pulse suppression device, under the condition that the energy storage amount of the energy storage piece is not changed, the energy storage piece can adapt to flow fluctuation in a larger working pressure range, and the flow pulse suppression device can be well suitable for fracturing equipment.
Description
Technical Field
The utility model belongs to the technical field of fracturing unit technique and specifically relates to a flow pulse suppression device is related to and fracturing unit.
Background
The variation of the output flow fluctuation of the plunger pump has important influence on the stability and the service life of the equipment. The existing fracturing truck large pump is commonly used as a 3-cylinder or 5-cylinder plunger pump, and a 7-cylinder plunger pump is developed, but the external dimension and the weight of the pump greatly influence the whole truck, and the pump is not popularized yet. In theoretical calculation, the fluctuation amount of the flow rate of the 3-cylinder plunger pump is 23.86%, the fluctuation amount of the flow rate of the 5-cylinder plunger pump is 8.43%, and the fluctuation amount of the flow rate of the 7-cylinder plunger pump is 3.58%, and it is difficult to reduce the fluctuation amount of the flow rate of the plunger pump only by increasing the number of the plungers.
In order to reduce the flow of the plunger pump, patent CN92211474.9 discloses a three-cylinder single-action reciprocating pump discharging pre-compressed air bag, which consists of an air charging device, an air bag shell and a bottom flange, wherein an all-rubber type integral capsule is installed in the air bag shell. First, a gas under pressure is charged through the charging connector. The discharge flow of the drilling pump is stabilized by the functions of compression and expansion of the gas in the air bag capsule. When the output flow of the pump is higher than the average flow, the gas in the air bag is compressed, so that the redundant liquid enters the air bag; on the contrary, the liquid in the air bag is discharged into the pipeline, so that the reciprocating operation is carried out along with the working speed of the pump, and the flow rate of the pump is relatively stable.
However, the maximum bearing pressure of the air bag capsule is not more than 35MPa, the maximum pressure of the outlet of the fracturing equipment is about 140MPa, and the maximum bearing pressure value of the air bag is small, so that the air bag capsule is difficult to be suitable for the fracturing equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flow pulse suppression device to the air package of solving among the prior art is difficult to be applicable to the technical problem of fracturing unit.
The utility model provides a flow pulse suppression device, which comprises an energy accumulator;
the energy accumulator comprises a plug body, a rod body and a cylinder body;
the rod body is fixedly connected with the plug body and is used for being connected with a hydraulic end of the plunger pump; the plug body is arranged in the cylinder body in a sliding mode; the area of the end face, facing the hydraulic end of the plunger pump, of the rod body is smaller than the area of the end face, far away from the rod body, of the plug body;
the end face, far away from the rod body, of the plug body and the cylinder body form a rodless cavity, an energy storage piece is arranged in the rodless cavity, the energy storage piece can be compressed by the plug body to store energy, and the energy storage piece can expand to release energy to drive the plug body to move.
Further, the rod body is a plunger.
Further, the energy storage member is a chemically inert gas disposed within the rodless chamber.
Further, the chemically inert gas is nitrogen.
Further, the energy storage piece is a spring, one end of the spring is abutted to the plug body, and the other end of the spring is abutted to the end face of the cylinder body.
Furthermore, the energy storage ware is a plurality of, every the body of rod of energy storage ware is used for being connected with the hydraulic end of plunger pump respectively.
Further, the energy storage members in the plurality of the energy storages have a plurality of kinds of stored energy.
Furthermore, an inflation interface is arranged on the cylinder body and communicated with the rodless cavity.
Further, the inner wall of the mouth of the cylinder body with the outer wall contact of the body of rod, be equipped with lubricated hydraulic fluid port on the mouth of the cylinder body, lubricated hydraulic fluid port will the inside and the outside intercommunication of cylinder body.
An object of the utility model is also to provide a fracturing unit, fracturing unit includes the utility model provides a flow pulse suppression device.
The utility model provides a flow pulse suppression device, which comprises an energy accumulator; the energy accumulator comprises a plug body, a rod body and a cylinder body; the rod body is fixedly connected with the plug body and is used for being connected with a hydraulic end of the plunger pump; the plug body is arranged in the cylinder body in a sliding mode; one end of the plug body, which is far away from the rod body, and the cylinder body form a rodless cavity, an energy storage piece is arranged in the rodless cavity, the energy storage piece can be compressed by the plug body for energy storage, and the energy storage piece can expand to release energy so as to drive the plug body to move. The body of rod assembly is served to the hydraulic pressure of plunger pump, and the fracturing fluid direct action in the high-pressure chamber of hydraulic pressure end is on the body of rod to transmit to the cock body through the body of rod. The pressure that the body of rod transmitted is acted on the energy storage piece in no pole intracavity through the cock body, and when hydraulic end pressure increased, the cock body compression energy storage piece, energy storage piece compression energy storage, when hydraulic end pressure reduced, energy storage piece inflation release can outwards be pushed out the cock body and the body of rod and carry out the fluid infusion, come the flow fluctuation in buffer hydraulic end high-pressure chamber. There is certain area ratio between this flow pulse suppression device's the body of rod and the cock body, the direct power of acting on the body of rod and cock body of fracturing fluid in hydraulic end high-pressure chamber is the same, because the area of the body of rod towards the terminal surface of the hydraulic end of plunger pump is less than the area of the terminal surface that the cock body kept away from the body of rod, the pressure that the fracturing fluid in hydraulic end high-pressure chamber acted on the body of rod is greater than the pressure that acts on the cock body, thereby reduce the energy storage of energy storage spare, make under the unchangeable circumstances of the energy storage volume of energy storage spare, the energy storage spare can adapt to the flow fluctuation of bigger operating pressure scope, can be applicable to fracturing equipment better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flow pulse suppression device according to an embodiment of the present invention.
Icon: 1-a plug body; 2-a plunger; 3-cylinder body; 31-a gas-filled interface; 32-lubricating oil ports; 4-rodless cavities; 5-fluid end.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a fracturing unit flow pulsation suppression device and fracturing unit, it is right to give a plurality of embodiments below the utility model provides a fracturing unit flow pulsation suppression device and fracturing unit carry out detailed description.
Example 1
In the flow pulse suppression device provided by the present embodiment, as shown in fig. 1, the flow pulse suppression device includes an accumulator; the energy accumulator comprises a plug body 1, a rod body and a cylinder body 3; the rod body is fixedly connected with the plug body 1 and is used for being connected with a hydraulic end 5 of the plunger pump; the plug body 1 is arranged in the cylinder body 3 in a sliding way; the area of the end surface of the rod body facing the hydraulic end 5 of the plunger pump is smaller than the area of the end surface of the plug body 1 far away from the rod body; the end face of the cock body 1, far away from the rod body, and the cylinder body 3 form a rodless cavity 4, an energy storage piece is arranged in the rodless cavity 4, the energy storage piece can be compressed by the cock body 1 for energy storage, and the energy storage piece can expand to release energy so as to drive the cock body 1 to move.
The rod body and the plug body 1 can be of an integrated structure and can be welded together in any suitable form. A certain area ratio is formed between the rod body and the plug body 1.
The stopper body 1 slides and sets up in cylinder body 3, and stopper body 1 can follow the axis reciprocating sliding of the body of rod, and the one end of stopper body 1 keeping away from the body of rod forms no pole chamber 4 with cylinder body 3, and stopper body 1 is formed with the pole chamber towards the one end of the body of rod and cylinder body 3.
The body of rod assembles on the hydraulic end 5 of plunger pump, and the fracturing fluid in the 5 high-pressure chambeies of hydraulic end directly acts on the body of rod to transmit to cock body 1 through the body of rod on. The pressure that the body of rod transmitted is passed through cock body 1 and is acted on the energy storage spare in no pole chamber 4, and when 5 pressure increases in hydraulic end, cock body 1 compression energy storage spare, energy storage spare compression energy storage, when 5 pressure reductions in hydraulic end, energy storage spare inflation release can outwards be pushed cock body 1 and the body of rod and carry out the fluid infusion, and the flow that buffers 5 high-pressure chambeies in hydraulic end is undulant. There is certain area ratio between this flow pulse suppression device's the body of rod and cock body 1, the force that the fracturing fluid direct action in the 5 high-pressure chambeies of fluid end is on the body of rod and cock body 1 is the same, because the area of the body of rod towards the terminal surface of the 5 hydraulic end of plunger pump is less than the area of the terminal surface that cock body 1 kept away from the body of rod, the pressure that the fracturing fluid in the 5 high-pressure chambeies of fluid end acted on the body of rod is greater than the pressure that acts on cock body 1, thereby reduce the energy storage of energy storage spare, make under the unchangeable condition of energy storage volume of energy storage spare, the energy storage spare can adapt to the flow fluctuation of bigger operating pressure scope, can be applicable to fracturing equipment better.
Wherein the rod body may be made of a conventional rod body.
Preferably, the rod body is a plunger 2. Because the surface of the plunger 2 is subjected to heat treatment, the wear resistance is better, and the plunger can be suitable for a working medium with gravel.
Compared with the air bag in the prior art, the air bag has poor wear resistance and cannot be used for the working medium with gravel. The flow pulse suppression device provided by the embodiment can be suitable for more media, and the applicability is improved.
As an embodiment, the energy storage means is a chemically inert gas, which is arranged in the rodless chamber 4.
The chemically inert gas may be any suitable gas such as nitrogen or helium.
The rodless cavity 4 is filled with gas with inactive chemical properties, when the pressure of the liquid end 5 is increased, the plug body 1 compresses the gas with inactive chemical properties, the gas with inactive chemical properties is compressed for energy storage, when the pressure of the liquid end 5 is reduced, the gas with inactive chemical properties rapidly expands and releases energy to push the plug body 1 and the rod body outwards, and the flow fluctuation of the liquid end 5 high-pressure cavity is buffered.
The pressure of the filled gas with inactive chemical property can be selected according to the working pressure range of the liquid end 5.
In this embodiment, the gas having an inert chemical property is nitrogen. Nitrogen is filled into the rodless cavity 4 to be used as an energy storage part.
Further, the cylinder 3 is provided with an inflation port 31, and the inflation port 31 is communicated with the rodless cavity 4.
The inflation interface 31 can be connected with a gas bottle, so that the rodless cavity 4 is filled with appropriate gas, and the convenience of inflation can be improved.
The inflation connector 31 may be provided with a valve, which is opened during inflation to allow gas to enter the rodless cavity 4, and is closed after inflation to prevent gas from leaking from the rodless cavity 4.
In another embodiment, the energy storage member is a spring, one end of which abuts against the plug body 1 and the other end of which abuts against the end surface of the cylinder 3.
When the pressure of the hydraulic end 5 is reduced, the spring is stretched and released to push the plug body 1 and the rod body outwards so as to buffer the flow fluctuation of the hydraulic end 5 high-pressure cavity.
Further, the energy storage ware is a plurality of, and the body of rod of each energy storage ware is used for being connected with the fluid end 5 of plunger pump respectively.
Wherein each accumulator can suppress flow fluctuations in the working pressure range.
The energy storage amount of the energy storage member in each energy storage device may be the same. For example, when the energy storage member is nitrogen, the nitrogen gas charged in the rodless chamber 4 of each energy storage device may be of the same pressure, or when the energy storage member is a spring, the pre-tightening force of the spring in the rodless chamber 4 of each energy storage device is the same. When a certain energy accumulator fails, other energy accumulators can work by throwing energy, and the reliability is ensured.
Further, the energy storage member in the plurality of energy storages has a plurality of kinds of stored energy.
The energy storage amount of the energy storage member in each energy storage device may be different, or may be any suitable manner such as that the energy storage amount of a part of the energy storage members in the plurality of energy storage devices is different from the energy storage amount of a part of the energy storage members in the plurality of energy storage devices.
For example, the energy storage amounts of the energy storage members in each energy storage device are different, for example, when the energy storage members are nitrogen, the pressure of the nitrogen charged in the rodless cavity 4 of each energy storage device is different, or when the energy storage members are springs, the pretightening force of the springs in the rodless cavity 4 of each energy storage device is different.
The energy storage members in the plurality of energy storages have various energy storage amounts and can be applied to working pressure ranges of various hydraulic ends 5, so that the working pressure ranges of the hydraulic ends 5 are adapted.
Further, the inner wall of the mouth of the cylinder 3 contacts the outer wall of the rod body, so that the inner wall of the mouth of the cylinder 3 is sealed with the outer wall of the rod body, the mouth of the cylinder 3 is provided with a lubricating oil port 32, and the lubricating oil port 32 communicates the inside and the outside of the cylinder 3.
Through lubricated hydraulic fluid port 32, can instil into lubricating oil between the inner wall of the oral area of cylinder body 3 and the outer wall of the body of rod to play lubricated effect.
The flow pulse suppression device that this embodiment provided, the body of rod assemble to the plunger pump on the fluid end 5, the fracturing fluid direct action of the 5 high-pressure chambers in fluid end is on the body of rod to transmit to cock body 1 through the body of rod on. The pressure that the body of rod transmitted is passed through cock body 1 and is acted on the energy storage spare in no pole chamber 4, and when 5 pressure increases in hydraulic end, cock body 1 compression energy storage spare, energy storage spare compression energy storage, when 5 pressure reductions in hydraulic end, energy storage spare inflation release can outwards be pushed cock body 1 and the body of rod and carry out the fluid infusion, and the flow that buffers 5 high-pressure chambeies in hydraulic end is undulant. There is certain area ratio between this flow pulse suppression device's the body of rod and cock body 1, the force that the fracturing fluid direct action in the 5 high-pressure chambeies of fluid end is on the body of rod and cock body 1 is the same, because the area of the body of rod towards the terminal surface of the 5 hydraulic end of plunger pump is less than the area of the terminal surface that cock body 1 kept away from the body of rod, the pressure that the fracturing fluid in the 5 high-pressure chambeies of fluid end acted on the body of rod is greater than the pressure that acts on cock body 1, thereby reduce the energy storage of energy storage spare, make under the unchangeable condition of energy storage volume of energy storage spare, the energy storage spare can adapt to the flow fluctuation of bigger operating pressure scope, can be applicable to fracturing equipment better.
Example 2
The fracturing equipment provided by the embodiment comprises the flow pulse suppression device provided by the embodiment 1.
The fracturing equipment can be a fracturing truck, a fracturing pry and other any suitable forms.
The body of rod assembles on the hydraulic end 5 of plunger pump, and the fracturing fluid in the 5 high-pressure chambeies of hydraulic end directly acts on the body of rod to transmit to cock body 1 through the body of rod on. The pressure that the body of rod transmitted is passed through cock body 1 and is acted on the energy storage spare in no pole chamber 4, and when 5 pressure increases in hydraulic end, cock body 1 compression energy storage spare, energy storage spare compression energy storage, when 5 pressure reductions in hydraulic end, energy storage spare inflation release can outwards be pushed cock body 1 and the body of rod and carry out the fluid infusion, and the flow that buffers 5 high-pressure chambeies in hydraulic end is undulant. There is certain area ratio between this flow pulse suppression device's the body of rod and cock body 1, the force that the fracturing fluid direct action in the 5 high-pressure chambeies of fluid end is on the body of rod and cock body 1 is the same, because the area of the body of rod towards the terminal surface of the 5 hydraulic end of plunger pump is less than the area of the terminal surface that cock body 1 kept away from the body of rod, the pressure that the fracturing fluid in the 5 high-pressure chambeies of fluid end acted on the body of rod is greater than the pressure that acts on cock body 1, thereby reduce the energy storage of energy storage spare, make under the unchangeable condition of energy storage volume of energy storage spare, the energy storage spare can adapt to the flow fluctuation of bigger operating pressure scope, can be applicable to fracturing equipment better.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A flow impulse suppression device, characterized in that said flow impulse suppression device comprises an accumulator;
the energy accumulator comprises a plug body, a rod body and a cylinder body (3);
the rod body is fixedly connected with the plug body (1), and is used for being connected with a hydraulic end (5) of the plunger pump; the plug body (1) is arranged in the cylinder body (3) in a sliding manner; the area of the end face, facing the hydraulic end (5) of the plunger pump, of the rod body is smaller than the area of the end face, far away from the rod body, of the plug body (1);
the stopper body (1) is kept away from the end face of the rod body and the cylinder body (3) form a rodless cavity (4), an energy storage piece is arranged in the rodless cavity (4), the energy storage piece can be compressed and stored by the stopper body (1), and the energy storage piece can expand to release energy so as to drive the stopper body (1) to move.
2. A flow impulse suppression device according to claim 1, characterized in, that said rod is a plunger (2).
3. A flow pulse suppression device according to claim 1, wherein the accumulator is a chemically inert gas disposed within the rodless chamber (4).
4. A flow pulse suppression device according to claim 3, wherein the chemically inert gas is nitrogen.
5. A flow impulse suppression device according to claim 1, characterized in that said energy accumulating member is a spring, one end of which abuts against said plug body (1) and the other end of which abuts against an end surface of said cylinder body (3).
6. A flow impulse suppression device according to claim 1, characterized in, that said accumulators are plural, the rod of each accumulator being adapted to be connected to the hydraulic end (5) of a plunger pump.
7. The flow impulse suppression device of claim 6, wherein said energy storage members of said plurality of energy storage devices have a plurality of stored energies.
8. A flow impulse suppression device according to claim 3, characterized in, that said cylinder (3) is provided with an air charging connection (31), said air charging connection (31) being in communication with said rodless chamber (4).
9. The flow pulse suppression device according to claim 1, characterized in that an inner wall of the mouth of the cylinder (3) is in contact with an outer wall of the rod, and a lubrication port (32) is provided on the mouth of the cylinder (3), the lubrication port (32) communicating the inside and the outside of the cylinder (3).
10. A fracturing apparatus, characterized in that it comprises a flow pulse suppression device according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921233888.8U CN210195950U (en) | 2019-07-31 | 2019-07-31 | Flow pulse suppression device and fracturing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921233888.8U CN210195950U (en) | 2019-07-31 | 2019-07-31 | Flow pulse suppression device and fracturing equipment |
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| CN210195950U true CN210195950U (en) | 2020-03-27 |
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| CN201921233888.8U Active CN210195950U (en) | 2019-07-31 | 2019-07-31 | Flow pulse suppression device and fracturing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404476A (en) * | 2021-01-21 | 2021-09-17 | 烟台杰瑞石油装备技术有限公司 | Low-pressure liquid inlet manifold and fracturing equipment |
-
2019
- 2019-07-31 CN CN201921233888.8U patent/CN210195950U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404476A (en) * | 2021-01-21 | 2021-09-17 | 烟台杰瑞石油装备技术有限公司 | Low-pressure liquid inlet manifold and fracturing equipment |
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