CN113604262A

CN113604262A - Sand ejector and sand ejecting system for desander

Info

Publication number: CN113604262A
Application number: CN202110852724.9A
Authority: CN
Inventors: 杨宇平; 毛键; 罗强; 陈晓娟; 王介
Original assignee: Sichuan Huayu Petroleum Drilling And Production Equipment Co ltd
Current assignee: Sichuan Huayu Petroleum Drilling And Production Equipment Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-11-05
Anticipated expiration: 2041-07-27
Also published as: CN113604262B

Abstract

The invention discloses a sand ejector for a sand remover and a sand ejecting system, wherein the sand ejector comprises a sand storage barrel, an air storage barrel and a bracket, the middle part of the sand storage barrel is a sand storage cavity, the top end of the sand storage barrel is provided with a sand inlet, and the side wall close to the bottom end of the sand storage barrel is provided with a water inlet and a sand ejecting port; an air storage cylinder is arranged in the sand storage cylinder through a bracket, the air storage cylinder is of a hollow conical structure, the conical tip of the air storage cylinder faces a sand inlet, a water inlet pipe joint and a sand discharge pipe joint are arranged on the side wall of the air storage cylinder, the water inlet pipe joint is opposite to the water inlet, the sand discharge pipe joint is opposite to the sand discharge port, and one end, positioned in the air storage cylinder, of the water inlet pipe joint is bent towards the bottom end; and gas storage spaces are arranged between the upper surfaces of the water inlet pipe joint and the sand discharge pipe joint and the conical tips. The air with a certain volume is retained in the air storage cylinder, sand and water deposited below the air storage cylinder cannot rise to the position of the sand discharging port all the time, so that an outlet channel which is always smooth is formed, and the joint of the water inlet pipe is bent downwards to form a vortex, so that the problem of blockage is fundamentally solved.

Description

Sand ejector and sand ejecting system for desander

Technical Field

The invention relates to the technical field of natural gas exploitation and production equipment, in particular to a sand ejector for a sand remover and a sand ejecting system.

Background

In the exploitation process of shale natural gas, solid-liquid mixtures such as water, sand, mud and the like are inevitably discharged back. In the process flow of natural gas treatment, harmful impurities are removed, the sand remover is used for removing solids such as gravel in shale gas, and the gravel separated by the sand remover needs to be discharged out of the equipment through a sand discharge system.

In a general traditional sand ejector, no matter the sewage discharge port is arranged at the lower part or the side part, the sand gravel blocks the outlet along with the increase of the deposition amount, and if the deposition is not tight, the sand can be discharged; however, if the build-up time is long and not discharging, the sand mixture becomes increasingly tight and forms a tight, hard mass that cannot be discharged even if the valve is opened, resulting in a clogged sand discharge system and no effective method of operation for sand discharge. The pressure in the sand storage cylinder can continuously rise, and finally the high pressure before the upper throttling is reached, so that the equipment is damaged.

Disclosure of Invention

The invention provides a sand discharge device for a sand remover and a sand discharge system, which aim to solve the problem that the sand discharge device in the prior art is blocked after being used for a long time.

The technical scheme adopted by the invention is as follows: the sand ejector for the sand remover comprises a sand storage barrel, an air storage barrel and a support, wherein a sand storage cavity is arranged in the middle of the sand storage barrel, a sand inlet is formed in the top end of the sand storage barrel, a water inlet and a sand outlet are formed in the side wall, close to the bottom end, of the sand storage barrel, and the water inlet and the sand outlet are located at the same horizontal position; the sand storage barrel is arranged in the sand storage barrel through the bracket, the air storage barrel is of a hollow pyramid or hollow cone structure, the cone tip of the air storage barrel faces the sand inlet, a water inlet pipe joint and a sand discharge pipe joint are arranged on the side wall of the air storage barrel, the water inlet pipe joint is opposite to the water inlet, the sand discharge pipe joint is opposite to the sand discharge port, and one end of the water inlet pipe joint, which is positioned in the air storage barrel, is bent towards the bottom end of the sand storage barrel; and gas storage spaces are formed between the upper surfaces of the water inlet pipe joint and the sand discharge pipe joint and the conical tips.

As a preferable mode of the sand ejector, the bottom end of the sand storage cylinder is provided with a slag removal port.

As a preferable mode of the sand ejector, the side wall of the sand storage barrel is also provided with a vent pipe orifice.

As a preferable mode of the sand ejector, the sand ejector further comprises a water inlet pipe and a sand ejector pipe, wherein the water inlet pipe is connected to the water inlet pipe connector in an inserting mode, and the sand ejector pipe is connected to the sand ejector port and the sand ejector pipe connector in an inserting mode.

The invention also discloses a sand discharge system for the sand remover, which comprises a sand inlet pipeline, a slag cleaning pipeline, a water inlet pipeline, a sand discharge pipeline, an emptying pipeline and the sand remover, wherein one end of the sand inlet pipeline is connected with the sand inlet, one end of the slag cleaning pipeline is connected with the slag cleaning port, one end of the water inlet pipeline is connected with the water inlet, one end of the sand discharge pipeline is connected with the sand discharge port, and one end of the emptying pipeline is connected with an emptying pipe orifice on the side wall of the sand storage barrel.

As an optimal mode of the sand discharge system, a first valve is installed on the sand inlet pipeline, a fourth valve is installed on the slag removal pipeline, a third valve is installed on the water inlet pipeline, a second valve is installed on the sand discharge pipeline, and a fifth valve is installed on the emptying pipeline.

The invention has the beneficial effects that: the sand ejector is provided with the air storage cylinder, air with a certain volume is retained in the air storage cylinder, sand and water deposited below the sand storage cylinder cannot rise to the position of a sand ejecting opening all the time in use, so that an always smooth outlet channel is formed, and in addition, a water inlet pipe joint is bent downwards to form a vortex, so that the problem of blockage is solved fundamentally.

Drawings

Fig. 1 is a schematic structural diagram of a sand ejector disclosed by the invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of a sand discharge system disclosed by the invention.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Reference numerals: 1. a sand storage cylinder; 101. a sand storage cavity; 102. a sand inlet; 103. a slag removal port; 104. a water inlet; 105. a sand discharge port; 2. a water inlet pipe; 3. a sand discharge pipe; 4. an air reservoir; 401. a water inlet pipe joint; 402. a sand discharge pipe joint; 403. a gas storage space; 5. a support; 6. a first valve; 7. a second valve; 8. a third valve; 9. a fourth valve; 10. a fifth valve; 11. emptying the pipeline; 12. a sand inlet pipeline; 13. a slag removal pipeline; 14. a water inlet pipeline; 15. and a sand discharge pipeline.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.

Example 1:

referring to fig. 1-2, a sand ejector for a sand remover comprises a sand storage cylinder 1, an air storage cylinder 4 and a bracket 5.

A sand storage cavity 101 is arranged in the middle of the sand storage barrel 1, a sand inlet 102 is arranged at the top end of the sand storage barrel 1, a slag removal opening 103 is arranged at the bottom end of the sand storage barrel 1, a water inlet 104 and a sand discharge opening 105 are arranged on the side wall of the sand storage barrel 1 close to the bottom end, and the water inlet 104 and the sand discharge opening 105 are in the same horizontal position; the air storage cylinder 4 is arranged in the sand storage cylinder 1 through a bracket 5, and the installation mode can be welding. In this embodiment, the bracket 5 is a steel bar.

Specifically, the air reservoir 4 is a hollow pyramid or hollow cone structure, a water inlet pipe joint 401 and a sand discharge pipe joint 402 are arranged on the side wall of the air reservoir 4, facing the sand inlet 102, of the cone tip of the air reservoir 4, the water inlet pipe joint 401 is opposite to the water inlet 104, the sand discharge pipe joint 402 is opposite to the sand discharge 105, one end, located in the air reservoir 4, of the water inlet pipe joint 401 is bent towards the end of the slag removal port 103 to form an included angle, and the included angle is an obtuse angle. And a gas storage space 403 is formed between the upper surfaces of the water inlet pipe joint 401 and the sand discharge pipe joint 402 to the conical tip.

Specifically, the side wall of the sand storage barrel 1 can be provided with a vent pipe opening, so that the pressure in the sand storage cavity 101 is released.

In the using process, the sand storage barrel 1 is also provided with a water inlet pipe 2 and a sand discharge pipe 3, the water inlet pipe 2 is inserted into the water inlet 104 and the water inlet pipe joint 401, and the sand discharge pipe 3 is inserted into the sand discharge port 105 and the sand discharge pipe joint 402.

Example 2

The present embodiment further provides a sand discharging system for a sand remover, which comprises a sand inlet pipeline 12, a slag cleaning pipeline 13, a water inlet pipeline 14, a sand discharging pipeline 15, an emptying pipeline 11 and the sand remover described in embodiment 1, referring to fig. 3-4.

The sand inlet pipe 12 is provided with a first valve 6, and one end thereof is connected to the sand inlet 102. The fourth valve 9 is installed on the slag cleaning pipeline 13, and one end of the fourth valve is connected to the slag cleaning port 103. The third valve 8 is installed on the water inlet line 14, and one end thereof is connected to the water inlet 104. The second valve 7 is installed on the sand discharge pipeline 15, and one end of the second valve is connected to the sand discharge port 105. The vent pipeline 11 is provided with a fifth valve 10, and one end of the vent pipeline is connected to a vent pipe orifice on the side wall of the sand storage barrel 1.

The working principle of the invention is as follows: the first valve 6 is opened to enable the gravel separated by the sand remover to enter the sand storage barrel 1, the gravel vertically falls under the action of self weight and passes through the gap between the air storage barrel 4 and the bracket 5 to fall below the air storage barrel, the third valve 8 is blocked, water enters the space below the air storage barrel 4 from the water inlet pipe 2, the water inlet pipe joint 401 is bent downwards to form a vortex, and the gravel is discharged from the sand discharge pipe 3 under the action of the impact force of the water. In the process, the air storage cylinder 4 is arranged in an inverted manner, and the air storage space 403 is provided with air all the time, so that the conical tip of the air storage cylinder 4 cannot be blocked. The slag removal pipeline 13 is used for maintenance, and the fourth valve 9 is in a closed state in normal production.

During use, the deposited gravel and water are increased and gradually raised, but the gravel and the water cannot be raised to the position of the sand discharge port in the air storage cylinder 4 part all the time, so that an outlet channel which is always smooth is formed, and the problem of blockage is solved fundamentally.

No matter under which kind of circumstances, can not block up the sand discharge system by this sand discharge system, even the caking is serious, also can be through adjusting the flush time to finally make the grit arrange the clean smoothly.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A sand ejector for a sand remover is characterized by comprising a sand storage barrel, an air storage barrel and a support, wherein a sand storage cavity is arranged in the middle of the sand storage barrel, a sand inlet is formed in the top end of the sand storage barrel, a water inlet and a sand outlet are formed in the side wall, close to the bottom end, of the sand storage barrel, and the water inlet and the sand outlet are located at the same horizontal position; the sand storage barrel is arranged in the sand storage barrel through the bracket, the air storage barrel is of a hollow pyramid or hollow cone structure, the cone tip of the air storage barrel faces the sand inlet, a water inlet pipe joint and a sand discharge pipe joint are arranged on the side wall of the air storage barrel, the water inlet pipe joint is opposite to the water inlet, the sand discharge pipe joint is opposite to the sand discharge port, and one end of the water inlet pipe joint, which is positioned in the air storage barrel, is bent towards the bottom end of the sand storage barrel; and gas storage spaces are formed between the upper surfaces of the water inlet pipe joint and the sand discharge pipe joint and the conical tips.

2. The sand ejector for the sand remover according to claim 1, wherein a slag removal port is provided at a bottom end of the sand storage cylinder.

3. The sand ejector for sand remover according to claim 1, wherein a blow-down nozzle is further provided on the side wall of said sand storage barrel.

4. The sand ejector for the sand remover according to the claims 1-3, further comprising a water inlet pipe and a sand ejector, wherein the water inlet pipe is inserted in the water inlet and the water inlet pipe joint, and the sand ejector is inserted in the sand outlet and the sand ejector pipe joint.

5. The utility model provides a sand discharge system for desander, its characterized in that includes sand inlet pipe way, scarfing cinder pipeline, water intake pipe way, sand discharge pipeline, unloading pipeline and claim 4 sand discharge for desander, sand inlet pipe way one end connect in the sand inlet, scarfing cinder pipeline one end is connected in the scarfing cinder mouth department that holds sand barrel head end setting, water intake pipe way one end connect in the water inlet, sand discharge pipeline one end connect in the sand discharge mouth, unloading pipeline one end connect in the unloading mouth on the sand barrel lateral wall.

6. The sand discharge system for the desander as claimed in claim 5, wherein a first valve is installed on the sand inlet pipeline, a fourth valve is installed on the slag cleaning pipeline, a third valve is installed on the water inlet pipeline, a second valve is installed on the sand discharge pipeline, and a fifth valve is installed on the air discharge pipeline.