阅读说明：本技术 天然气螺旋除砂装置及其使用方法 (Natural gas spiral sand removing device and using method thereof ) 是由 高友华 于 2020-07-14 设计创作，主要内容包括：本发明公开了天然气螺旋除砂装置及其使用方法,除砂筒中设置有上下敞口的重力分离筒,重力分离筒的外侧面设置有螺旋叶片,螺旋叶片的外侧与除砂筒的内壁相接触,除砂筒的侧面设置有进气口,进气口位于螺旋叶片相邻的两个叶片之间；除砂筒的下端设置有排砂口,除砂筒的上端密封盖,密封盖上设置有排气口,重力分离筒的上端与排气口连通；密封盖的内部设置有用于存放溶剂的储存腔,所述溶剂用于清洗重力分离筒和螺旋叶片,储存腔与进气口之间通过连接管连通,连接管上设置有用于控制溶剂进入除砂筒内的控制阀。本装置结合螺旋分离和重力分离对天然气进行除砂,螺旋分离区域和重力分离区域在同一个区域中,有效的节约了空间位置。(The invention discloses a natural gas spiral desanding device and a using method thereof.A gravity separation cylinder with an upper opening and a lower opening is arranged in a desanding cylinder, the outer side surface of the gravity separation cylinder is provided with a spiral blade, the outer side of the spiral blade is contacted with the inner wall of the desanding cylinder, the side surface of the desanding cylinder is provided with an air inlet, and the air inlet is positioned between two adjacent blades of the spiral blade; the lower end of the desanding cylinder is provided with a sand discharge port, the upper end of the desanding cylinder is sealed by a cover, the cover is provided with an exhaust port, and the upper end of the gravity separation cylinder is communicated with the exhaust port; the inside of sealed lid is provided with the storage chamber that is used for depositing the solvent, the solvent is used for wasing gravity separation section of thick bamboo and helical blade, stores between chamber and the air inlet through the connecting pipe intercommunication, is provided with the control valve that is used for controlling the solvent entering degritting section of thick bamboo on the connecting pipe. This device combines spiral separation and gravity separation to carry out the degritting to the natural gas, and spiral separation region and gravity separation region are in same region, the effectual spatial position of having practiced thrift.)

1. The natural gas spiral sand removing device is characterized by comprising a sand removing cylinder (1), wherein a gravity separation cylinder (2) with an upper opening and a lower opening is arranged in the sand removing cylinder (1), a spiral blade (3) is arranged on the outer side surface of the gravity separation cylinder (2), the outer side of the spiral blade (3) is contacted with the inner wall of the sand removing cylinder (1), an air inlet (4) is arranged on the side surface of the sand removing cylinder (1), and the air inlet (4) is positioned between two adjacent blades of the spiral blade (3); the lower end of the sand removing cylinder (1) is provided with a sand discharging port (5), the upper end of the sand removing cylinder (1) is connected with a sealing cover (10), the sealing cover (10) is provided with an exhaust port (12), and the upper end of the gravity separation cylinder (2) is communicated with the exhaust port (12);

the inside of sealed lid (10) is provided with the storage chamber that is used for depositing the solvent, the solvent is used for wasing gravity separation section of thick bamboo (2) and helical blade (3), stores between chamber and air inlet (4) and communicates through connecting pipe (11), is provided with the control valve that is used for controlling the solvent entering in the sand removal section of thick bamboo (1) on connecting pipe (11).

2. The spiral natural gas desanding device according to claim 1, wherein an adjusting device is arranged in the sand outlet (5), and comprises a supporting plate (8), a heating body (6) and an expansion rod (7) which are sequentially connected from top to bottom;

the telescopic rod (7) drives the supporting plate (8) to move up and down, so that the supporting plate (8) is in contact with or separated from the sand discharge port (5), and when the supporting plate (8) is in contact with the sand discharge port (5), the supporting plate (8) is used for shielding the sand discharge port (5); when the supporting plate (8) is separated from the sand discharge port (5), sand and stones are discharged through the sand discharge port (5);

the width of the heating body (6) is gradually reduced from top to bottom, and the telescopic rod (7) drives the heating body (6) to move up and down, so that the heating body (6) is positioned in the sand discharge port (5) or the sand removal cylinder (1); when the heating body (6) is positioned in the sand removing cylinder (1), the heating body (6) heats the sand.

3. The spiral natural gas desanding device according to claim 2, wherein a placing groove is formed in the upper end of the desanding cylinder (1), a clamping plate (14) is arranged on the upper end of the gravity separation cylinder (2), the placing groove is used for placing the clamping plate (14), and a filter screen is arranged at the lower end of the gravity separation cylinder (2); the gravity separation cylinder (2) is moved out of the sand removing cylinder under the action of the telescopic rod (7).

4. The spiral natural gas desanding device according to claim 2, wherein a plurality of heating wires are arranged in the heating body (6), and when the heating body (6) is positioned in the desanding cylinder (1), the heating body (6) rotates by taking a straight line where the telescopic rod (7) is positioned as an axis.

5. The spiral natural gas sand removing device according to the claim 1, wherein the upper end of the gravity separation cylinder (2) is an expanded port (13) with the diameter gradually decreasing from top to bottom, and the diameter of the lower end of the expanded port (13) is larger than that of the exhaust port (12).

6. Spiral natural gas desanding device according to claim 1, wherein the spiral blade (3) is of hollow structure and the internal cavity of the spiral blade (3) is in communication with the internal cavity of the gravity separation cylinder (2).

7. The use method of the spiral natural gas desanding device according to any one of claims 1 to 6 is characterized by comprising a desanding step, a cleaning step and a replacing step;

the sand removing step comprises the following steps:

a1: the telescopic rod (7) is shortened to a first preset length, the supporting plate (8) is in contact with the sand discharge port (5), the control valve on the connecting pipe (11) is closed, the adjusting valve for controlling the sand-containing natural gas to enter the air inlet (4) is opened, and the sand-containing natural gas enters the sand removal barrel (1) through the air inlet (4);

a2: the sand-containing natural gas is subjected to primary separation through the helical blade (3), sand after primary separation is deposited at the bottom in the sand removing cylinder (1), the natural gas after primary separation enters the gravity separation cylinder (2) for secondary separation, and the natural gas after secondary separation is discharged from the upper end of the gravity separation cylinder (2) and the exhaust port (12); the sand and stone after the secondary separation are deposited at the bottom in the sand removing cylinder (1) from the gravity separation cylinder (2);

a3: when the sand needs to be discharged, the regulating valve is closed, the telescopic rod (7) extends to a second preset length, the supporting plate (8) is separated from the sand discharge port (5), the heating body (6) is positioned in the sand removing cylinder (1), and sand and stone are discharged through the sand discharge port (5);

the cleaning step comprises the following steps:

b1: after the sand and stone are discharged, the telescopic rod (7) is shortened to a first preset length, the supporting plate (8) is in contact with the sand discharge port (5), the heating body (6) is positioned in the sand discharge port (5), the control valve is opened, and the solvent in the storage cavity enters the sand removing cylinder (1) through the connecting pipe (11) for cleaning;

b2: after cleaning, closing the control valve, extending the telescopic rod (7) to a second preset length, separating the support plate (8) from the sand discharge port (5), positioning the heating body (6) in the sand discharge port (5), and discharging the solvent through the sand discharge port (5);

the replacing step comprises the following steps:

c1: when helical blade (3) needs to be replaced, sealing cover (10) is taken down from the upper end of desanding cylinder (1), telescopic rod (7) is extended to a third preset length, supporting plate (8) is in contact with the filter screen, and telescopic rod (7) drives gravity separation cylinder (2) to move out of desanding cylinder (1).

8. The use method of the spiral natural gas desanding device is characterized in that a gravity sensor is arranged in the inner bottom of the desanding cylinder (1) and used for monitoring the weight S of sand deposited in the desanding cylinder;

when the S is larger than or equal to the threshold A, the regulating valve is closed, the telescopic rod (7) extends to a second preset length, the heating body (6) starts to heat and rotate, and sand and stone are discharged through the sand discharge port;

when S is less than threshold value A, telescopic link (7) shorten to first preset length, backup pad (8) and sand discharge port contact, and the governing valve is opened, and sand-containing natural gas gets into sand removal section of thick bamboo (1).

9. The use method of the natural gas spiral desanding device is characterized in that the desanding device further comprises a counter and a timer, wherein the counter is used for metering the number N of the sand discharging times, the timer is used for timing the time length T of the solvent in the desanding cylinder, the initial time of the time length T is the time when the control valve is opened, and the tail end time of the time length T is the time when the control valve is closed;

when N is larger than or equal to the threshold value C, the telescopic rod (7) is shortened to a first preset length, the regulating valve is closed, the control valve is opened, the solvent enters the sand removing cylinder (1) from the storage cavity, and the number N is reset;

and when the T is greater than or equal to the threshold value D, the control valve is closed, the telescopic rod extends to a second preset length, and the solvent is discharged from the sand discharge port.

Technical Field

The invention relates to a desanding cylinder, in particular to a natural gas spiral desanding device and a using method thereof.

Background

Because the natural gas contains silt and the pipeline transmission medium is gas-solid two-phase flow, the inside of the throttle valve is impacted by the gas-solid two-phase flow (particularly sand grains therein) for a long time in the operation process, so that phenomena such as erosion, puncture and the like are easy to occur, and the production safety is seriously influenced. At the orifice, the pressure, velocity and particle flow path change due to the reduced flow area, and thus, the erosion is often a severe part.

Therefore, in the process of transporting and using the natural gas, the natural gas is usually required to be desanded and then transported to a transportation pipeline for transportation, so that the use efficiency of the pipeline can be effectively improved. The mode that current desanding section of thick bamboo used spiral separation tube and gravity separation both to combine together separates natural gas and silt, but spiral separation tube and gravity separation are two sections detached structures, not only need occupy great spatial position, the natural gas is after the separation of spiral separation tube simultaneously, when separating through the gravity separation stage again, the silt of separation under the action of gravity gets into again in the natural gas in the spiral separation tube, need separate again in the spiral separation tube, additionally increase the content of grit in the natural gas, increase the impact to the spiral separation tube, spiral separation tube's wearing and tearing accelerate, separation efficiency has also been reduced simultaneously.

The current sand removing barrel, because the grit is to the impact of spiral separation tube, grit and natural gas residual substance remain for a long time on the spiral separation tube under the impact of grit and natural gas, can accelerate the wearing and tearing of spiral separation tube, influence life, consequently at the in-process that uses, regularly carry out surface treatment to the spiral separation tube, and current device need take out the spiral separation tube and just can wash it, troublesome poeration and consuming time power.

Disclosure of Invention

The invention aims to provide a sand removing cylinder, wherein a spiral separating device and a gravity separating device are simultaneously carried out in one area, sand and stone separated by the spiral separating device and the gravity separating device are not interfered with each other, the separated sand and stone are all positioned in a sand storage area of the sand removing cylinder, the sand and stone separated by the gravity separating device are prevented from entering natural gas in the spiral separating area, the impact of the sand and stone on the spiral separating device is reduced, the service life is prolonged, and the separating efficiency is improved.

One of the objects of the present invention is to provide a sand removing cylinder, which can directly clean a spiral separation device in the sand removing cylinder, and can be maintained without taking out the sand removing cylinder, thereby facilitating use.

Another object of the present invention is to provide a method for using a sand removing cylinder, which can remove sand more efficiently and improve the service life of the sand removing cylinder conveniently.

The above purpose is realized by adopting the following technical scheme:

a gravity separation barrel with an upper opening and a lower opening is arranged in the desanding barrel, a helical blade is arranged on the outer side surface of the gravity separation barrel, the outer side of the helical blade is in contact with the inner wall of the desanding barrel, and an air inlet is arranged on the side surface of the desanding barrel and is positioned between two adjacent blades of the helical blade; the lower end of the desanding cylinder is provided with a sand discharge port, the upper end of the desanding cylinder is sealed by a cover, the cover is provided with an exhaust port, and the upper end of the gravity separation cylinder is communicated with the exhaust port;

the inside of sealed lid is provided with the storage chamber that is used for depositing the solvent, the solvent is used for wasing gravity separation section of thick bamboo and helical blade, stores between chamber and the air inlet through the connecting pipe intercommunication, is provided with the control valve that is used for controlling the solvent entering degritting section of thick bamboo on the connecting pipe.

The outside, the inboard of helical blade are connected with the inner wall of a sand removing section of thick bamboo, the outer wall of a gravity separation section of thick bamboo respectively, consequently, form a helical channel between helical blade, a sand removing section of thick bamboo inner wall, the gravity separation section of thick bamboo outer wall, when the sand-containing natural gas passes through the air inlet and gets into in the sand removing section of thick bamboo, the helical motion is carried out to the sand-containing natural gas on the helical channel who forms, and during helical motion, natural gas and grit carry out once separation.

The grit after the primary separation is deposited at the lower end of the desanding cylinder, the natural gas after the primary separation of the helical blades flows to the lower end of the helical blades and enters the gravity separation cylinder through the lower end of the gravity separation cylinder, a small amount of grit can be contained in the natural gas after the primary separation, the natural gas flows upwards in the gravity separation cylinder, the grit flows downwards under the action of self gravity, the natural gas and the grit are subjected to secondary separation in the gravity separation cylinder, and the separated grit falls into the inner bottom of the desanding cylinder from the gravity separation cylinder to be deposited.

The device has the advantages that the primary separation and the secondary separation, namely the spiral separation and the gravity separation, are in one region, so that the space can be effectively saved, and gravels separated by the gravity cannot enter the spiral blades again, so that the service life of the spiral blades and the separation effect of the spiral blades are influenced.

Under the separation mode of this device, after discharging sand, close the natural gas governing valve, then open the control valve, in the solvent in the sealed internal storage chamber of lid passed through the connecting pipe and gets into a desanding section of thick bamboo, the solvent that gets into in the desanding section of thick bamboo carries out the helical motion on helical passage, washs helical passage at the in-process of motion. Use the solvent to wash helical blade and gravity separator tube, can get rid of the grit that remains on helical blade effectively, because remain some corrosive substance on the grit, pile up in helical blade's clearance for a long time, can accelerate helical blade's damage, influence life.

The solvent used in the device comprises the following components in parts by weight: 10% of phosphoric acid, 3% of oxalic acid, 0.5% of triethanolamine oleate, 5% of diethylene glycol monobutyl ether and the balance of water. Above-mentioned solvent not only can effectually get rid of the grit earth on the helical blade, can also clear away grease, corrosion etc. on the helical blade simultaneously, can further improve helical blade's life, guarantee the separation efficiency of grit and natural gas.

Preferably, an adjusting device is arranged in the sand discharging port, and the adjusting device sequentially comprises a supporting plate, a heating body and a telescopic rod from top to bottom; under the action of the telescopic rod, the supporting plate is positioned on the sand discharge port or in the sand removing barrel, and when the supporting plate is positioned on the sand discharge port, the supporting plate is used for shielding the sand discharge port; when the supporting plate is positioned in the sand removing cylinder, sand and stone are removed through the sand discharging port;

the width of the heating body is gradually reduced from top to bottom, and the heating body is positioned in the sand discharge port or the sand removing cylinder under the action of the telescopic rod; when the heating body is positioned in the sand removing cylinder, the heating body starts to heat.

The adjusting device of this device can convenient control arrange the sand, and when the needs were arranged the sand, the telescopic link extended the second and predetermine length, backup pad and row's sand mouth separation, and at this moment, the grit was discharged from the sand removing section of thick bamboo through arranging the sand mouth, and the back has been discharged, when needing deposit grit, adjusted the telescopic link and shortened the first length of predetermineeing, backup pad and row's sand mouth contact, and the backup pad shelters from row's sand mouth, and the grit deposit is in the top of backup pad.

Preferably, a plurality of heating wires are arranged in the heating body, and the heating body rotates by taking the straight line where the telescopic rod is located as an axis. When the telescopic rod extends to a second preset length, the supporting plate is separated from the sand discharging port, at the moment, the heating wire in the heating body is electrified, the heating body starts to heat, and sand and stones are accumulated at the bottom in the sand removing cylinder for a period of time, so that the bonding condition is difficult to avoid, and therefore, the telescopic rod of the device extends, and can loosen the accumulated sand and stones besides the function of opening the sand discharging port, so that the sand and stones can be conveniently discharged from the sand removing cylinder; in addition, the heating body rotates and heats, and the loosening of the sand can be accelerated.

A placing groove is formed in the upper end of the sand removing cylinder, a clamping plate is arranged at the upper end of the gravity separation cylinder, the placing groove is used for placing the clamping plate, and a filter screen is arranged at the lower end of the gravity separation cylinder; the gravity separation cylinder is moved out of the sand removing cylinder under the action of the telescopic rod.

The gravity separation section of thick bamboo is placed in the standing groove on the sand removing section of thick bamboo through the cardboard on it, when needs take out the gravity separation section of thick bamboo, takes off sealed lid from the upper end of sand removing section of thick bamboo, and the telescopic link extends to the third and predetermines length, makes backup pad and filter screen contact, and under the further extension of telescopic link, the telescopic link drives the gravity separation section of thick bamboo and upwards removes, takes out from the gravity separation section of thick bamboo. Therefore, the telescopic rod can also be used for taking out the gravity separation cylinder, and the use is more convenient.

Preferably, the upper end of the gravity separation cylinder is an expanded port with the diameter gradually decreasing from top to bottom, and the diameter of the expanded port is larger than that of the exhaust port. The natural gas of secondary separation flows to the upper end from the lower extreme of gravity separation section of thick bamboo, and when the diameter of expansion mouth was greater than the diameter of gas vent, can improve the flow rate of natural gas, makes its quick inflow gas vent, and simultaneously, such setting also more is favorable to further separation natural gas and grit, avoids the grit to get into in the gas vent.

Preferably, the helical blade is of a hollow structure, and the inner wall of the helical blade is communicated with the inner side of the gravity separation cylinder. The helical blade of this device communicates with the inside of gravity separation section of thick bamboo, and consequently when the natural gas after once separating in the gravity separation section of thick bamboo, the screw thread passageway that forms in gravity separation section of thick bamboo and the helical blade inner chamber can combine gravity separation and spiral separation when the natural gas carries out the secondary separation, improvement separation efficiency that can be further.

Further, the use method of the spiral natural gas desanding device comprises a desanding step, a cleaning step and a replacing step;

the sand removing step comprises the following steps:

a1: the telescopic rod is shortened to a first preset length, the supporting plate is in contact with the sand discharge port, the control valve on the connecting pipe is closed, the regulating valve for controlling the sand-containing natural gas to enter the air inlet is opened, and the sand-containing natural gas enters the sand removing cylinder through the air inlet;

a2: the natural gas containing sand is subjected to primary separation through a helical blade, sand and stone after primary separation are deposited at the bottom in a sand removing cylinder, the natural gas after primary separation enters a gravity separation cylinder for secondary separation, and the natural gas after secondary separation is discharged from the upper end of the gravity separation cylinder and an exhaust port; the sand and stone after the secondary separation are deposited at the bottom in the sand removing cylinder from the gravity separation cylinder;

a3: when the sand needs to be discharged, the regulating valve is closed, the telescopic rod extends to a second preset length, the supporting plate is separated from the sand discharging port, the heating body is positioned in the sand removing cylinder, and the sand and stone are discharged through the sand discharging port;

the cleaning step comprises the following steps:

b1: after the sand and stone are discharged, the telescopic rod is shortened to a first preset length, the supporting plate is in contact with the sand discharge port, the heating body is positioned in the sand discharge port, the control valve is opened, and the solvent in the storage cavity enters the sand removing cylinder through the connecting pipe for cleaning;

b2: after cleaning, closing the control valve, extending the telescopic rod to a second preset length, separating the support plate from the sand discharge port, positioning the heating body in the sand discharge port, and discharging the solvent through the sand discharge port;

the replacing step comprises the following steps:

c1: when helical blade needs to be replaced, the sealing cover is taken down from the upper end of the desanding cylinder, the telescopic rod extends to a third preset length, the supporting plate is in contact with the filter screen, and the telescopic rod drives the gravity separation cylinder to move out of the desanding cylinder.

A gravity sensor is arranged in the inner bottom of the sand removing cylinder and used for monitoring the weight S of the sand and stone deposited in the sand removing cylinder;

when the S is larger than or equal to the threshold A, the regulating valve is closed, the telescopic rod extends to a second preset length, the heating body starts to heat and rotate, and the sand and stone are discharged through the sand discharge port;

when S is less than threshold value A, the telescopic link shortens to first predetermined length, and backup pad and sand discharge opening contact, the governing valve is opened, and the sand-containing natural gas gets into the sand removal section of thick bamboo.

The desanding device also comprises a counter and a timer, wherein the counter is used for metering the number N of the drained sand, the timer is used for timing the time length T of the solvent in the desanding cylinder, the initial time of the time length T is the time when the control valve is opened, and the tail end time of the time length T is the time when the control valve is closed;

when N is larger than or equal to the threshold value C, the telescopic rod is shortened to a first preset length, the regulating valve is closed, the control valve is opened, the solvent enters the sand removal cylinder from the storage cavity, and the number N is reset;

and when the T is greater than or equal to the threshold value D, the control valve is closed, the telescopic rod extends to a second preset length, and the solvent is discharged from the sand discharge port.

Compared with the prior art, the invention has the following advantages and beneficial effects:

according to the natural gas spiral desanding device, the natural gas is desanded by combining spiral separation and gravity separation, and the spiral separation area and the gravity separation area are in the same area, so that the spatial position is effectively saved; and the natural gas after helical blade primary separation gets into and carries out the secondary separation through gravity in the gravity separation section of thick bamboo, and the grit of secondary separation can not flow on helical blade, compares with current separator, and the burden that can further reduce helical blade improves separation efficiency.

Simultaneously, this device is after the sediment outflow, and the accessible solvent washs helical blade and gravity separation section of thick bamboo, detach the grit attached to helical blade, and further improvement desanding section of thick bamboo's life does not need the manual work to change, and it is more convenient to operate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of the present apparatus;

FIG. 2 is a schematic view of the structure of the device during sand discharge;

fig. 3 is a schematic view of the gravity separation cartridge when removed.

Reference numbers and corresponding part names in the drawings:

1-a sand removing cylinder, 2-a gravity separation cylinder, 3-a helical blade, 4-an air inlet, 5-a sand discharging port, 6-a heating body, 7-a telescopic rod, 8-a supporting plate, 9-a baffle, 10-a sealing cover, 11-a connecting pipe, 12-an air outlet, 13-an expansion port and 14-a placing groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.

[ example 1 ]

As shown in fig. 1, a gravity separation barrel 2 with an upper opening and a lower opening is arranged in a sand removing barrel 1, a helical blade 3 is arranged on the outer side surface of the gravity separation barrel 2, the outer side of the helical blade 3 is in contact with the inner wall of the sand removing barrel 1, an air inlet 4 is arranged on the side surface of the sand removing barrel 1, and the air inlet 4 is positioned between two adjacent blades of the helical blade 3; the lower end of the desanding cylinder 1 is provided with a sand discharge port 5, the upper end of the desanding cylinder 1 is sealed by a cover 10, the cover 10 is provided with an exhaust port 12, and the upper end of the gravity separation cylinder 2 is communicated with the exhaust port 12;

the inside of the sealing cover 10 is provided with a storage cavity for storing a solvent, the solvent is used for cleaning the gravity separation cylinder 2 and the helical blade 3, and the solvent comprises the following components in percentage by weight: 10% of phosphoric acid, 3% of oxalic acid, 0.5% of triethanolamine oleate, 5% of diethylene glycol monobutyl ether and the balance of water. The storage cavity is communicated with the air inlet 4 through a connecting pipe 11, and the connecting pipe 11 is provided with a control valve for controlling the solvent to enter the desanding cylinder 1.

When the natural gas separator is used, the control valve is closed, natural gas containing sand is introduced into the gas inlet, the natural gas enters the sand removing cylinder, the helical blades are arranged on the threaded passage formed between the inner wall of the sand removing cylinder and the outer wall of the gravity separation device to perform helical motion, the natural gas and the sand are separated for the first time in the motion process, the sand after the first separation is deposited at the inner bottom of the sand removing cylinder, the natural gas enters the gravity separation cylinder from the lower end of the gravity separation cylinder, then the natural gas is subjected to secondary separation under the action of gravity, the sand after the secondary separation falls into the inner bottom of the sand removing cylinder from the gravity separation cylinder through the gravity, and the natural gas enters the gas outlet through the upper end of the gravity separation cylinder and is discharged.

After a period of time, stop letting in the sand-containing natural gas, the control telescopic link extends to the second and predetermines length, backup pad 8 and sand discharge opening separation, heating member 6 is located a sand removal section of thick bamboo, as shown in fig. 2, sedimentary grit is discharged through sand discharge opening, backup pad 8 and sand discharge opening separation, heating member and telescopic link 7 fixed connection, telescopic link 7 rotates along its axis under the effect of motor, the telescopic link drives heating member 6 at rotatory in-process and uses telescopic link 7 place straight line to rotate as the axis.

And, in the course of rotating, the heater strip that sets up in the heating body 6 is electrified, and the heater strip begins to heat, therefore in the course of heating body rotation, the heating body heats the grit simultaneously, in order to make it discharge from the sand discharge mouth fast.

In this embodiment, the width of the heating body 6 is gradually reduced from top to bottom, one of which is more convenient for sand to pass through, and the other of which is better acted on the sand to prevent the sand from being bonded when the heating body is rotated for heating.

After the sand discharge is finished, adjust the telescopic link and shorten to first preset length, make it shelter from the sand discharge mouth, then open the control valve, the solvent is from storing the chamber, flow into the degritting section of thick bamboo in the air inlet, the solvent carries out the screw motion on the screw channel that forms between helical blade, degritting section of thick bamboo inner wall and the gravity separation device outer wall, and clear away the grit on the helical blade at the in-process of motion, prevent that it from bonding in the junction of helical blade and gravity separation section of thick bamboo, avoid accelerating separation device's wearing and tearing. With the increase of the solvent, the solvent overflows into the gravity separation cylinder, and further the inner wall of the gravity separation cylinder can be further cleaned. After the cleaning is finished, the telescopic rod is controlled to extend, the supporting plate 8 and the heating body 6 are both positioned in the sand removing cylinder, and the solvent is discharged through the sand discharging port.

Secondly, after long-term use, when needing to take out helical blade and gravity separation section of thick bamboo and change the maintenance, take off the connecting bolt between the upper end of sealed lid and degritting section of thick bamboo, then take off sealed lid, as shown in fig. 3, adjust the telescopic link and continuously extend to the third and predetermine length, the filter screen contact of backup pad and gravity separation section of thick bamboo 2's lower extreme setting, the telescopic link continuously extends, drive gravity separation section of thick bamboo and move upwards, and then under the effect of telescopic link, take out gravity separation section of thick bamboo and screw blade from the degritting section of thick bamboo, do not need the manual work to extract.

When the gravity separation cylinder is placed, the lower end of the gravity separation cylinder is inserted into the desanding cylinder, after the gravity separation cylinder is placed, the clamping plate 14 at the upper end of the gravity separation cylinder is in contact with the placing groove 14 at the upper end of the desanding cylinder 1, and then the gravity separation cylinder 2 is fixed in the desanding cylinder.

[ example 2 ]

On the basis of the embodiment 1, the upper end of the gravity separation cylinder 2 is an expanded port 13 with the diameter gradually decreasing from top to bottom, and the diameter of the expanded port 13 is larger than that of the exhaust port 12. And the helical blade 3 is of a hollow structure, and the inner wall of the helical blade 3 is communicated with the inner side of the gravity separation cylinder 2. Therefore, the natural gas subjected to secondary separation in the gravity separation cylinder is subjected to spiral separation while being subjected to gravity separation, and the separation efficiency is further improved.

Secondly, two baffles 9 are symmetrically arranged on the inner wall of the sand removing cylinder and at the lower end of the gravity separation cylinder, and the baffles are obliquely arranged downwards in an inclined manner and can be used for blocking deposited sand and stone and preventing the natural gas from driving the deposited sand and stone to flow.

The telescopic link of this device is JND 30's electric putter for the model to this electric putter's lower extreme still is connected with the motor, and the motor control telescopic link uses its place straight line to rotate as the axis.

The heating device comprises a heating body, wherein heating wires are uniformly distributed in the side face of the heating body, a power supply and a controller are further arranged in the heating body, when the telescopic rod extends, the controller sends a signal to a motor and the power supply, the motor controls the telescopic rod to drive the heating body to rotate, the power supply is communicated with the heating wires to be electrified, in the embodiment, the model of the controller is MAM-100, and the controller is connected with the power supply and the motor in the existing connection mode.

[ example 3 ]

In this embodiment, the use method of the natural gas spiral sand removal device includes the following steps:

s1: the gravity sensor is arranged at the inner bottom of the sand removing cylinder and used for monitoring the weight S of sand and stone deposited in the sand removing cylinder, when S is larger than or equal to a threshold value A, the gravity sensor sends a signal to the controller, the controller controls a regulating valve used for controlling sand-containing natural gas to enter an air inlet to be closed, natural gas is stopped to be introduced, then the controller sends the signal to the telescopic rod, the telescopic rod extends to a second preset length, the controller controls the motor to work, the power supply is communicated with a heating wire in the heating body, the telescopic rod drives the heating body to rotate, the heating body starts to heat, and the sand and stone are discharged through a sand discharging port;

s2: when the S is smaller than the threshold value A, the controller controls the telescopic rod to be shortened to a first preset length, namely, the heating body is located in the sand discharge port, and the supporting plate is in contact with the upper end of the sand discharge port to shield the sand discharge port; the controller controls the regulating valve to be opened, and the sand-containing natural gas is introduced into the sand removing cylinder for separation.

S3: the controller is further connected with a counter, the counter is used for metering the number N of the sand discharging, namely the number of the times that the supporting plate is located in the sand removing cylinder, when the N is larger than or equal to a threshold value C, the controller controls the regulating valve to be closed, the control valve is opened, the solvent enters the sand removing cylinder from the storage cavity, the spiral blade and the gravity separation device are cleaned, a timer is further connected to the controller and used for timing the time length T of the solvent in the sand removing cylinder, the initial time of the time length T is the time that the control valve is opened, the tail end of the time length T is the time that the control valve is closed, when the T is larger than or equal to the threshold value D, the controller controls the control valve to be closed, the telescopic rod extends to a second preset length, and the solvent is discharged from.

Also, in S3, the number of times the counter records is cleared when the control valve is opened, and the counter does not count when the regulating valve is closed.

When the helical blade 3 needs to be replaced, the sealing cover 10 is taken down from the upper end of the sand removing cylinder 1, the controller controls the telescopic rod 7 to extend to the second length, and the gravity separation cylinder 2 is moved out of the sand removing cylinder 1 under the action of the telescopic rod 7.

The threshold value A is set according to the size of an actual sand removing cylinder, and the threshold value A is two thirds of the mass of sand which can be deposited at the lower end of the gravity separation cylinder of the sand removing cylinder. In the present embodiment, the threshold a is 50 kg.

The threshold value C is 5 times, and N is a positive integer.

The threshold value T is 15min, and generally speaking, the solvent used in the invention can achieve better use effect after being soaked for 15 min.

Meanwhile, the length setting of the first preset length, the second preset length and the third preset length of the device needs to be set according to the size of the device in actual use.

The term "connected" used herein may be either directly connected or indirectly connected via other components without being particularly described.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.