An injection device and method for continuously and automatically injecting bactericidal corrosion inhibitors into shale gas gathering and transportation pipelines

Abstract

The present invention discloses a filling device and method for continuously and automatically filling a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline. The present invention relates to the technical field of continuously filling a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline. It includes a bracket welded on the vertical section of a joint, a liquid supply assembly for pumping and diverting the bactericidal corrosion inhibitor is provided on the bracket, a first atomizing assembly and a second atomizing assembly are provided between the joint and the bracket, which can automatically monitor whether the atomizing head is blocked and can automatically retract, and the first atomizing assembly and the second atomizing assembly are both connected to the liquid supply assembly; the first atomizing assembly also includes a horizontal plate fixed on the bracket and located directly below the movable cylinder, the output shaft of the driving motor extends into the frame, and a gear is installed on the extended end, and the gear is meshed with the rack of the movable cylinder. The beneficial effects of the present invention are: it can continuously and automatically fill the gathering and transportation pipeline with mist-like bactericidal corrosion inhibitor, greatly improve the shale gas extraction output, and reduce the work intensity of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous and automatic injection of bactericidal corrosion inhibitors into shale gas gathering and transportation pipelines, and in particular to a device and method for continuously and automatically injecting bactericidal corrosion inhibitors into shale gas gathering and transportation pipelines. Background Art

[0002] The structure of the gas production system used in a shale gas production area is as follows: Figure 1 As shown, it includes a Christmas tree 1 fixed on the wellhead, a connector 3 fixed to the end valve 2 of the Christmas tree 1, and the end of the connector 3 is connected to a gathering pipeline 4. The shale gas extracted from the well passes through the main channel of the Christmas tree 1, the end valve 2, the connector 3 and finally enters the gathering pipeline 4 under gas pressure. The flow direction of the shale gas is as shown in FIG. Figure 1 As indicated by the solid arrows, the shale gas then flows through gathering and transportation pipeline 4 to designated processing equipment. Because the shale gas extracted from the well also contains bacteria (including iron bacteria, saprophytes, and sulfate-reducing bacteria), the bacteria corrode gathering and transportation pipeline 4, causing perforations in the pipeline. This in turn causes shale gas to leak through the holes in the gathering and transportation pipeline 4, thereby reducing shale gas production.

[0003] To this end, workers install a dripping device on joint 3 to drip a bactericidal corrosion inhibitor into joint 3. This bactericidal corrosion inhibitor kills bacteria entrained in the shale gas. While this dripping device can kill bacteria entrained in shale gas, the injected bactericidal corrosion inhibitor is in the form of droplets, which has a small contact area with the bacteria, resulting in poor sterilization effectiveness. It also wastes a large amount of bactericidal corrosion inhibitor, which in turn increases sterilization costs.

[0004] To solve the above problem, workers installed the following on joint 3: Figure 2 The filling device shown is used to introduce a mist sterilizing and corrosion inhibitor into the gathering and transportation pipeline 4. Since the mist sterilizing and corrosion inhibitor has a large dispersion area, it can better kill bacteria entrained in the shale gas, thereby avoiding bacterial corrosion of the gathering and transportation pipeline 4, thereby increasing the shale gas production.

[0005] The filling device includes a cylinder 5 and a bracket 6 welded on the side wall of the vertical section of the joint 3. The cylinder 5 is connected to the joint 3. A cover plate 7 is connected to the left end surface of the cylinder 5 via multiple screws. An atomizing tube 8 is welded inside the cover plate 7. The right end of the atomizing tube 8 is detachably connected to an atomizing head located in the cylinder 5. The atomizing head includes a disc 9 threadedly connected to the right end of the atomizing tube 8. A hemispherical shell 10 is fixedly provided on the right end of the disc 9. A plurality of atomizing holes are provided on the spherical surface of the hemispherical shell 10; a water pump 12 and a bactericidal corrosion inhibitor storage tank 13 are fixed on the top surface of the bracket 6, the liquid extraction pipe of the water pump 12 is connected to the bactericidal corrosion inhibitor storage tank 13, and a bend 14 is connected to the discharge pipe of the water pump 12. The end of the bend 14 passes through the bracket 6 and is connected to the left end of the atomizing tube 8 via a pipeline.

[0006] The method of using the filling device to fill the mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4 is as follows:

[0007] The worker turns on the water pump 12, and the water pump 12 draws out the bactericidal corrosion inhibitor in the bactericidal corrosion inhibitor storage tank 13. Under the pump pressure, the bactericidal corrosion inhibitor passes through the water pump 12, the elbow 14, the atomizing pipe 8, the inner cavity of the hemispherical shell 10, and finally sprays out from each atomizing hole. The flow direction of the bactericidal corrosion inhibitor is as follows: Figure 3 As shown by the hollow arrow, during the spraying process, the liquid sterilization and corrosion inhibitor turns into a mist sterilization and corrosion inhibitor, thereby achieving the filling of the mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4.

[0008] However, although this filling device can fill the mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4, it still has the following technical defects during actual use:

[0009] I. After a period of filling, most of the atomizing holes of the atomizing head will be blocked by the particles carried by the shale gas, making it impossible to continuously fill the gathering pipeline 4 with the mist sterilizing and corrosion inhibitor, which in turn causes the bacteria that continuously enter the gathering pipeline 4 from the well to corrode it. Therefore, this filling device cannot continuously fill the gathering pipeline 4 with the mist sterilizing and corrosion inhibitor. At the same time, it will also cause the gathering pipeline 4 to corrode and cause perforation on the gathering pipeline 4, thereby reducing the shale gas production.

[0010] II. To prevent the gathering and transportation pipeline 4 from being corroded by bacteria carried by the shale gas, workers can only replace the atomizer head regularly [because the atomizer head is hidden inside the cylinder 5 and workers cannot determine whether the atomization holes of the atomizer head are blocked, so they can only replace the atomizer head regularly]. The specific method for workers to replace the atomizer head is:

[0011] S1. The worker first closes the end valve 2 of the Christmas tree 1, so that the shale gas extracted from the well no longer enters the gathering pipeline 4;

[0012] S2, the worker manually removes the multiple screws between the cylinder 5 and the cover 7 to remove the cover 7; S3, moves the cover 7 to the left to remove the atomizing head from the cylinder 5, as shown in FIG. Figure 4 As shown, the worker manually rotates the disc 9 of the atomizing head out from the atomizing tube 8 to remove the atomizing head from the atomizing tube 8;

[0013] S4. The worker screws the new atomizer head onto the atomizer tube 8, places the new atomizer head into the cylinder 5, and then installs the cover plate 7 onto the cylinder 5, so that the new atomizer head enters the filling station;

[0014] S5. The worker opens the end valve 2 of the Christmas tree 1. At this time, the shale gas from the well continues to enter the gathering pipeline 4, and the shale gas is mixed with the mist-like bactericidal corrosion inhibitor sprayed from the new atomizing head, thereby preventing the gathering pipeline 4 from being corroded by bacteria carried by the shale gas.

[0015] Although this method of regularly replacing the atomizing head can prevent the gathering and transportation pipeline 4 from being corroded by bacteria carried by the shale gas, it also leads to the following technical problems: in step S1, it is necessary to close the end valve 2 to stop the extraction of shale gas, resulting in discontinuous shale gas extraction operations, that is, delaying the extraction of shale gas, thereby reducing the extraction output of shale gas; in addition, in steps S2 to S4, workers are required to successively dismantle and install the cover plate 7, and the entire replacement process is complex, resulting in a long time required to replace the new atomizing head, which undoubtedly further delays the extraction of shale gas and further reduces the extraction output of shale gas.

[0016] Therefore, there is an urgent need for a filling device and method that can continuously and automatically fill the gathering and transportation pipeline with mist sterilization and slow etching, greatly increase shale gas production, and reduce the workload of workers. Summary of the Invention

[0017] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a filling device and method for continuously and automatically filling the shale gas gathering and transportation pipeline with mist sterilization and corrosion inhibitor, which can greatly improve the shale gas production and reduce the workload of workers.

[0018] The objectives of the present invention are achieved through the following technical solutions: a filling device for continuously and automatically filling a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline, comprising a bracket welded to a vertical section of a joint, a liquid supply assembly for pumping and diverting the bactericidal corrosion inhibitor provided on the bracket, a first atomizing assembly and a second atomizing assembly that can automatically detect whether an atomizing head is blocked and automatically retract provided between the joint and the bracket, and both the first atomizing assembly and the second atomizing assembly are connected to the liquid supply assembly;

[0019] The first atomizing assembly includes an electric ball valve provided on the vertical section of the joint, the valve core of the electric ball valve cuts off the left and right sections of the electric ball valve, the right section of the electric ball valve is welded to the joint and is in communication with the joint, a horizontal guide rail is welded to the left end surface of the left section of the electric ball valve, a slider is slidably mounted on the horizontal guide rail, a movable cylinder is welded to the bottom end of the slider, and a rack is welded to the bottom surface of the movable cylinder along its axial direction;

[0020] A partition with a central hole is welded inside the movable cylinder, a connecting rod is welded on the right end surface of the partition, a pressure sensor is fixed on the right end of the connecting rod, and a signal line of the pressure sensor passes through the rear wall of the movable cylinder;

[0021] The right end surface of the movable cylinder abuts against the left end surface of the left section tube of the electric ball valve, and the inner cavity of the movable cylinder is communicated with the left section tube, the left end surface of the movable cylinder is connected with an end cover, an atomizing tube is slidably installed in the end cover, the right end portion of the atomizing tube passes through the central hole of the partition to the right and extends into the left section tube of the electric ball valve, the extended end of the atomizing tube is detachably connected with an atomizing head located on the left side of the valve core of the electric ball valve, a horizontally arranged pressure rod is fixed on the left end surface of the atomizing head, and the left end surface of the pressure rod presses on the pressure sensor; a spring in a compressed state is sleeved on the atomizing tube, the left end portion of the spring is fixed on the left end surface of the partition, and the right end portion of the spring is fixed on the left end surface of the atomizing head, an annular block located between the partition and the end cover is welded on the cylindrical surface of the atomizing tube, and a card groove is opened on the top surface of the annular block;

[0022] A locking electric cylinder is fixed on the top surface of the movable cylinder and is located on the left side of the horizontal guide rail. The piston rod of the locking electric cylinder extends into the movable cylinder and an insert is connected to the extended end. The insert is inserted into the slot of the annular block to lock the atomizer tube.

[0023] The first atomization assembly also includes a horizontal plate fixed on the bracket and located directly below the movable cylinder. A frame is fixed on the right end of the horizontal plate, and a drive motor is fixed on the frame. The output shaft of the drive motor extends into the frame, and a gear is installed on the extended end, which engages with the rack of the movable cylinder.

[0024] The first atomization assembly and the second atomization assembly are symmetrically arranged up and down.

[0025] The right section pipe of the electric ball valve, the flow channel of the valve core and the left section pipe are on the same horizontal straight line, and the inner diameter of the right section pipe of the electric ball valve is equal to the flow channel diameter of the valve core, and the inner diameter of the left section pipe of the electric ball valve is equal to the flow channel diameter of the valve core.

[0026] The atomizing head includes a disc threadedly connected to the right end of the atomizing tube. The disc is slidably matched with the left section of the electric ball valve. A hemispherical shell is fixed on the right end of the disc. A plurality of atomizing holes are opened on the spherical surface of the hemispherical shell.

[0027] The right end portion of the spring is fixedly arranged on the left end surface of the disc of the atomizing head, and the pressure rod is fixedly arranged on the left end surface of the disc of the atomizing head.

[0028] The liquid supply assembly includes a water pump and a bactericidal corrosion inhibitor storage tank fixed on the top surface of the bracket. The water pump's liquid suction pipe is connected to the bactericidal corrosion inhibitor storage tank. The water pump's liquid discharge pipe is connected to a bent pipe. The end of the bent pipe passes through the bracket and the extended end is closed. The bottom and top ends of the bent pipe are respectively connected to a first solenoid valve and a second solenoid valve. In the initial state, the first solenoid valve and the second solenoid valve are both in a closed state.

[0029] A first hose is connected to the end port of the first solenoid valve, and the other end of the first hose is connected to the left end portion of the atomizer tube of the first atomizer assembly; a second hose is connected to the end port of the second solenoid valve, and the other end of the second hose is connected to the left end portion of the atomizer tube of the second atomizer assembly.

[0030] The continuous filling device also includes a controller, which is connected to the drive motor, the electric ball valve, the first solenoid valve, the second solenoid valve, the signal line of the pressure sensor, the water pump and the locking electric cylinder.

[0031] A method for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline comprises the following steps:

[0032] S1. Open the end valve of the Christmas tree. Shale gas extracted from the well under pressure passes through the main channel of the Christmas tree, the end valve, and the joint and finally enters the gathering pipeline. The shale gas then flows through the gathering pipeline to the designated processing equipment.

[0033] S2. Continuously and automatically add a mist sterilization and corrosion inhibitor into the gathering and transportation pipeline. The specific operation steps are as follows:

[0034] S21, controlling the electric ball valve of the first atomizing assembly to start, and rotating the valve core of the electric ball valve of the first atomizing assembly horizontally by 90 degrees. At this time, the valve core connects the left section of the pipe with the right section of the pipe;

[0035] S22: The piston rod of the locking electric cylinder of the first atomizer assembly is controlled to retract upward, and the piston rod drives the insert block to move upward. When the insert block is released from the slot of the annular block of the atomizer tube, the spring pushes the disk and hemispherical shell of the atomizer head to the right under the elastic restoring force of the spring. The disk and hemispherical shell of the atomizer head sequentially pass through the left section of the electric ball valve of the first atomizer assembly and the flow channel of the valve core, and finally enter the right section of the electric ball valve of the first atomizer assembly.

[0036] S23. Control the first solenoid valve to open, and then control the water pump to start. The water pump draws the bactericidal corrosion inhibitor from the bactericidal corrosion inhibitor storage tank. Under the pump pressure, the bactericidal corrosion inhibitor passes through the water pump, the elbow, the first solenoid valve, the first hose, the atomizing pipe of the first atomizing assembly, the inner cavity of the hemispherical shell of the first atomizing assembly, and finally is sprayed out from each atomizing hole. During the spraying process, the liquid bactericidal corrosion inhibitor is converted into a mist bactericidal corrosion inhibitor, thereby achieving the filling of the mist bactericidal corrosion inhibitor into the gathering and transportation pipeline. The mist bactericidal corrosion inhibitor kills bacteria entrained in the shale gas.

[0037] S24. After a period of filling, most of the atomizing holes of the atomizing head of the first atomizing assembly will be blocked by particles carried by the shale gas. At this time, the shale gas entering the joint acts on the spherical surface of the hemispherical shell of the atomizing head. Under the pressure of the shale gas, the hemispherical shell drives the pressure rod to the left and gradually compresses the spring. When the pressure rod of the first atomizing assembly presses against the pressure sensor, the pressure sensor sends a pressure signal to the controller via the signal line. After receiving the pressure signal, the controller controls the activation of the second atomizing assembly in the following steps:

[0038] S241: The controller controls the electric ball valve of the first atomizer assembly to close, and the valve core of the electric ball valve rotates horizontally by degrees, thereby cutting off the left and right sections of the pipe. The controller then controls the piston rod of the locking cylinder of the first atomizer assembly to extend downward, and the piston rod drives the insert block to move downward, and the insert block is inserted into the slot of the annular block of the first atomizer assembly, thereby locking the atomizer pipe of the first atomizer assembly.

[0039] S242: The controller starts the electric ball valve of the second atomizing assembly. The valve core of the electric ball valve of the second atomizing assembly rotates horizontally 90 degrees. At this time, the valve core connects the left section of the pipe with the right section of the pipe.

[0040] S243: The controller controls the piston rod of the locking cylinder of the second atomizer assembly to retract downward, and the piston rod drives the insert block to move downward. When the insert block is released from the slot of the annular block of the atomizer tube, the spring pushes the disk and hemispherical shell of the atomizer head to the right under the elastic restoring force of the spring. The disk and hemispherical shell of the atomizer head sequentially pass through the left section of the electric ball valve of the second atomizer assembly and the flow channel of the valve core, and finally enter the right section of the electric ball valve of the second atomizer assembly.

[0041] S244, controlling the first solenoid valve to close and the second solenoid valve to open, so that the sterilizing and corrosion inhibitor passes through the water pump, the elbow, the second solenoid valve, the second hose, the atomizing tube of the second atomizing assembly, the inner cavity of the hemispherical shell of the second atomizing assembly in sequence under the pump pressure, and finally is sprayed out from each atomizing hole. During the spraying process, the liquid sterilizing and corrosion inhibitor is converted into a mist sterilizing and corrosion inhibitor, thereby realizing the addition of the mist sterilizing and corrosion inhibitor into the gathering and transportation pipeline, thereby adding the mist sterilizing and corrosion inhibitor into the gathering and transportation pipeline through the second atomizing assembly, and finally continuously adding the mist sterilizing and corrosion inhibitor into the gathering and transportation pipeline;

[0042] S3. Replace the clogged atomizer head of the first atomizer assembly. The specific steps are as follows:

[0043] S31. The drive motor of the first atomizer assembly is controlled to start. The drive motor drives the gear to rotate counterclockwise. The gear drives the rack to move leftward. The rack drives the movable cylinder of the first atomizer assembly to move leftward. At the same time, the slider of the movable cylinder moves leftward along the horizontal guide rail. The movable cylinder also drives the end cover, the locking cylinder, the atomizer tube, the disc and the hemispherical shell of the atomizer head to move leftward synchronously. When the movable cylinder is separated from the electric ball valve of the first atomizer assembly, the drive motor is controlled to shut down. The blocked disc and hemispherical shell of the atomizer head are exposed outside the movable cylinder.

[0044] S32. The worker rotates the clogged atomizer head exposed to the outside out of the atomizer pipe to remove the atomizer head from the atomizer pipe. After removal, the worker screws a new atomizer head onto the atomizer pipe, thereby finally replacing the clogged atomizer head of the first atomizer assembly.

[0045] S4. Make the new atomizer head enter the waiting position: control the drive motor of the first atomizer assembly to start, the drive motor drives the gear to rotate clockwise, the gear drives the rack to move to the right, and the rack drives the movable cylinder of the first atomizer assembly to move to the right. At the same time, the slider of the movable cylinder moves to the right along the horizontal guide rail. The movable cylinder also drives the end cover, the locking electric cylinder, the atomizer tube, and the new atomizer head to move to the right synchronously. When the right end face of the movable cylinder abuts against the electric ball valve of the first atomizer assembly, control the drive motor to shut down, so that the new atomizer head enters the waiting position.

[0046] The present invention has the following advantages: it can continuously and automatically inject mist sterilization slow etching into the gathering and transportation pipeline, greatly improve the shale gas production output, and reduce the work intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic diagram of the structure of the gas production system used in a certain area;

[0048] Figure 2 It is a structural diagram of an existing filling device;

[0049] Figure 3 A schematic diagram of an existing filling device filling a mist-like bactericidal corrosion inhibitor into a gathering pipeline;

[0050] Figure 4 A schematic diagram of removing the atomizing head from the barrel;

[0051] Figure 5 It is a structural schematic diagram of the present invention;

[0052] Figure 6 for Figure 5 The main cross-sectional diagram of

[0053] Figure 7 Schematic diagram of the structure of the first atomization component;

[0054] Figure 8 for Figure 7 The main cross-sectional diagram of

[0055] Figure 9 for Figure 8 Schematic diagram of the connection between the electric ball valve and the horizontal guide rail;

[0056] Figure 10 for Figure 8 Schematic diagram of the connection between the movable cylinder, pressure sensor, rack and locking electric cylinder;

[0057] Figure 11 for Figure 8 Schematic diagram of the connection between the atomizing tube, atomizing head and pressure rod;

[0058] Figure 12 for Figure 11 The main cross-sectional diagram of

[0059] Figure 13 This is a connection diagram of the cross plate, drive motor and gear;

[0060] Figure 14 It is a structural schematic diagram of the liquid supply component;

[0061] Figure 15 for Figure 14 The main cross-sectional diagram of

[0062] Figure 16 Schematic diagram of shale gas flow direction;

[0063] Figure 17 A schematic diagram of the valve core of the electric ball valve of the first atomizing assembly connecting the left pipe section and the right pipe section;

[0064] Figure 18 This is a schematic diagram of the atomizing head of the first atomizing assembly entering the right section of the pipe of the electric ball valve;

[0065] Figure 19A schematic diagram of the pressure rod of the first atomizing assembly pressing against the pressure sensor;

[0066] Figure 20 A schematic diagram of the valve core of the electric ball valve of the first atomizing assembly cutting off the left and right pipe sections;

[0067] Figure 21 A schematic diagram of the valve core of the electric ball valve of the second atomizing assembly connecting the left pipe section and the right pipe section;

[0068] Figure 22 This is a schematic diagram of the atomizing head of the second atomizing assembly entering the right section of the pipe of the electric ball valve;

[0069] Figure 23 This is a schematic diagram of the movable cylinder and the electric ball valve of the first atomizing assembly after separation;

[0070] Figure 24 This is a schematic diagram of a new atomizer head entering the waiting position;

[0071] In the picture:

[0072] 1-Xmas tree, 2-end valve, 3-connector, 4-gathering pipeline, 5-cylinder, 6-bracket, 7-cover, 8-atomizing pipe, 9-disc, 10-hemispherical shell, 12-water pump, 13-bactericide and corrosion inhibitor storage tank, 14-elbow pipe;

[0073] 15-liquid supply assembly, 16-first atomization assembly, 17-second atomization assembly;

[0074] 18-electric ball valve, 19-valve core, 20-left pipe section, 21-right pipe section, 22-horizontal guide rail, 23-slider, 24-movable cylinder, 25-rack, 26-partition, 27-connecting rod, 28-pressure sensor;

[0075] 29-end cover, 30-pressure rod, 31-spring, 32-annular block, 33-slot, 34-locking cylinder, 35-insert block, 36-cross plate, 37-drive motor, 38-gear;

[0076] 39-first solenoid valve, 40-second solenoid valve, 41-first hose, 42-second hose, 43-new atomizing head. DETAILED DESCRIPTION

[0077] The present invention will be further described below with reference to the accompanying drawings, and the protection scope of the present invention is not limited to the following:

[0078] like Figures 5 to 15As shown, a filling device for continuously and automatically filling a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline comprises a bracket 6 welded to a vertical section of a joint 3, said bracket 6 being provided with a liquid supply assembly 15 for pumping and diverting the bactericidal corrosion inhibitor, a first atomizing assembly 16 and a second atomizing assembly 17 being provided between said joint 3 and the bracket 6, which can automatically monitor whether the atomizing head is blocked and can automatically retract, said first atomizing assembly 16 and the second atomizing assembly 17 being symmetrically arranged up and down, and both the first atomizing assembly 16 and the second atomizing assembly 17 being connected to the liquid supply assembly 15.

[0079] The first atomization assembly 16 includes an electric ball valve 18 arranged on the vertical section of the joint 3. The valve core 19 of the electric ball valve 18 cuts off the left section pipe 20 and the right section pipe 21 of the electric ball valve 18. The right section pipe 21 of the electric ball valve 18 is welded to the joint 3 and is connected to the joint 3. A horizontal guide rail 22 is welded on the left end surface of the left section pipe 20 of the electric ball valve 18, and a slider 23 is slidably mounted on the horizontal guide rail 22. A movable cylinder 24 is welded to the bottom end of the slider 23, and a rack 25 is welded on the bottom surface of the movable cylinder 24 along its axial direction.

[0080] A partition 26 with a center hole is welded inside the movable cylinder 24 , a connecting rod 27 is welded on the right end face of the partition 26 , a pressure sensor 28 is fixed on the right end of the connecting rod 27 , and a signal line of the pressure sensor 28 passes through the rear wall of the movable cylinder 24 backward.

[0081] The right end face of the movable cylinder 24 abuts against the left end face of the left section tube 20 of the electric ball valve 18, and the inner cavity of the movable cylinder 24 is communicated with the left section tube 20. The left end face of the movable cylinder 24 is connected with an end cover 29, and the atomizing tube 8 is slidably installed in the end cover 29. The right end portion of the atomizing tube 8 passes through the center hole of the partition 26 to the right and extends into the left section tube 20 of the electric ball valve 18. The extended end of the atomizing tube 8 is detachably connected to an atomizing head located on the left side of the valve core 19 of the electric ball valve 18. The atomizing head includes a disc 9 threadedly connected to the right end portion of the atomizing tube 8. The disc 9 slides with the left section tube 20 of the electric ball valve 18. The right end portion of the disc 9 is fixed with a hemispherical shell 10, and a plurality of atomizing holes are provided on the spherical surface of the hemispherical shell 10. A horizontally arranged pressure rod 30 is fixed to the left end face of the atomizing head, and the left end face of the pressure rod 30 presses against the pressure sensor 28. A spring 31 is sleeved on the atomizing tube 8 in a compressed state. The left end of the spring 31 is fixed to the left end face of the partition 26, and the right end of the spring 31 is fixed to the left end face of the atomizing head. An annular block 32 is welded to the cylindrical surface of the atomizing tube 8, located between the partition 26 and the end cover 29. A slot 33 is provided on the top surface of the annular block 32. The right end of the spring 31 is fixed to the left end face of the atomizing head's disc 9, and the pressure rod 30 is fixed to the left end face of the atomizing head's disc 9.

[0082] A locking electric cylinder 34 is fixedly provided on the top surface of the movable cylinder 24 and is located on the left side of the horizontal guide rail 22. The piston rod of the locking electric cylinder 34 extends into the movable cylinder 24 and is connected to an insert block 35 on the extended end. The insert block 35 is inserted into the slot 33 of the annular block 32 to lock the atomizer tube 8; the first atomizer assembly 16 also includes a horizontal plate 36 fixedly provided on the bracket 6 and located directly below the movable cylinder 24. A frame is fixedly provided on the right end portion of the horizontal plate 36, and a drive motor 37 is fixed on the frame. The output shaft of the drive motor 37 extends into the frame, and a gear 38 is installed on the extended end. The gear 38 is engaged with the rack 25 of the movable cylinder 24.

[0083] The right section pipe 21 of the electric ball valve 18, the flow channel of the valve core 19 and the left section pipe 20 are on the same horizontal straight line, and the inner diameter of the right section pipe 21 of the electric ball valve 18 is equal to the flow channel diameter of the valve core 19, and the inner diameter of the left section pipe 20 of the electric ball valve 18 is equal to the flow channel diameter of the valve core 19.

[0084] The liquid supply assembly 15 includes a water pump 12 and a bactericidal corrosion inhibitor storage tank 13 fixed on the top surface of the bracket 6. The liquid extraction pipe of the water pump 12 is connected to the bactericidal corrosion inhibitor storage tank 13. The discharge pipe of the water pump 12 is connected to a bend 14. The end of the bend 14 passes through the bracket 6, and the extended end is closed. The bottom and top ends of the bend 14 are respectively connected to a first solenoid valve 39 and a second solenoid valve 40. In the initial state, the first solenoid valve 39 and the second solenoid valve 40 are both in a closed state. The end of the first solenoid valve 39 is connected to a first hose 41, the other end of which is connected to the left end of the atomizing pipe 8 of the first atomizing assembly 16; the end of the second solenoid valve 40 is connected to a second hose 42, the other end of which is connected to the left end of the atomizing pipe 8 of the second atomizing assembly 17.

[0085] The continuous filling device also includes a controller, which is connected to the drive motor 37, the electric ball valve 18, the first solenoid valve 39, the second solenoid valve 40, the signal line of the pressure sensor 28, the water pump 12 and the locking cylinder 34. The controller can control the start or stop of the drive motor 37, the water pump 12, the first solenoid valve 39 and the second solenoid valve 40, and can also control the extension or retraction of the piston rod of the locking cylinder 34, thereby driving the insert 35 to move up and down.

[0086] A method for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline comprises the following steps:

[0087] S1. Open the end valve 2 of the Christmas tree 1. The shale gas extracted from the well will flow through the main channel of the Christmas tree 1, the end valve 2, the joint 3 and finally into the gathering pipeline 4 under the pressure. The flow direction of the shale gas is as follows: Figure 16As shown by the solid arrow in the middle, the shale gas then flows through the gathering and transportation pipeline 4 to the designated processing equipment;

[0088] S2. Continuously and automatically add a mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4. The specific operation steps are as follows:

[0089] S21, control the electric ball valve 18 of the first atomizing assembly 16 to start, and the valve core 19 of the electric ball valve 18 of the first atomizing assembly 16 is rotated horizontally by 90 degrees. At this time, the valve core 19 connects the left section pipe 20 and the right section pipe 21. Figure 17 As shown;

[0090] S22, control the piston rod of the locking electric cylinder 34 of the first atomizing assembly 16 to retract upward, and the piston rod drives the insert block 35 to move upward. When the insert block 35 is disengaged from the slot 33 of the annular block 32 of the atomizing tube 8, under the elastic restoring force of the spring 31, the spring 31 pushes the disc 9 and the hemispherical shell 10 of the atomizing head to move rightward, and the disc 9 and the hemispherical shell 10 of the atomizing head sequentially pass through the left section tube 20 and the flow channel of the valve core 19 of the electric ball valve 18 of the first atomizing assembly 16, and finally enter the right section tube 21 of the electric ball valve 18 of the first atomizing assembly 16, as shown in FIG. Figure 18 As shown;

[0091] S23, control the first electromagnetic valve 39 to open, and then control the water pump 12 to start, the water pump 12 draws out the bactericidal corrosion inhibitor in the bactericidal corrosion inhibitor storage tank 13, and under the pump pressure, the bactericidal corrosion inhibitor passes through the water pump 12, the elbow 14, the first electromagnetic valve 39, the first hose 41, the atomizing pipe 8 of the first atomizing assembly 16, and the inner cavity of the hemispherical shell 10 of the first atomizing assembly 16 in sequence. The flow direction of the bactericidal corrosion inhibitor is as follows: Figure 18 As shown by the hollow arrows, the liquid bactericidal corrosion inhibitor is finally sprayed out from each atomization hole. During the spraying process, the liquid bactericidal corrosion inhibitor is transformed into a mist bactericidal corrosion inhibitor, thereby realizing the injection of the mist bactericidal corrosion inhibitor into the gathering and transportation pipeline 4. The mist bactericidal corrosion inhibitor kills bacteria entrained in the shale gas.

[0092] S24. After a period of filling, most of the atomizing holes of the atomizing head of the first atomizing assembly 16 will be blocked by the particles carried by the shale gas. At this time, the shale gas entering the joint 3 acts on the spherical surface of the hemispherical shell 10 of the atomizing head. Under the pressure of the shale gas, the hemispherical shell 10 drives the pressure rod 30 to move left and gradually compresses the spring 31. When the pressure rod 30 of the first atomizing assembly 16 presses against the pressure sensor 28, as shown in FIG. Figure 19 As shown, the pressure sensor 28 sends a pressure signal to the controller via the signal line. After the controller receives the pressure signal, the controller controls the second atomizing assembly 17 to start the following operation steps:

[0093] S241, the controller controls the electric ball valve 18 of the first atomizing assembly 16 to close, and the valve core 19 of the electric ball valve 18 rotates horizontally 90 degrees, and the valve core 19 cuts off the left section pipe 20 and the right section pipe 21, as shown in FIG. Figure 20 As shown; the controller then controls the piston rod of the locking cylinder 34 of the first atomizer assembly 16 to extend downward, and the piston rod drives the insert block 35 to move downward, and the insert block 35 is inserted into the card groove of the annular block 32 of the first atomizer assembly 16 to lock the atomizer tube 8 of the first atomizer assembly 16;

[0094] S242, the controller controls the electric ball valve 18 of the second atomizing assembly 17 to start, and the valve core 19 of the electric ball valve 18 of the second atomizing assembly 17 rotates horizontally 90 degrees. At this time, the valve core 19 connects the left section pipe 20 and the right section pipe 21. Figure 21 As shown;

[0095] S243, the controller controls the piston rod of the locking cylinder 34 of the second atomizing assembly 17 to retract downward, and the piston rod drives the insert block 35 to move downward. When the insert block 35 is disengaged from the slot 33 of the annular block 32 of the atomizing tube 8, under the elastic restoring force of the spring 31, the spring 31 pushes the disc 9 and the hemispherical shell 10 of the atomizing head to move rightward, and the disc 9 and the hemispherical shell 10 of the atomizing head sequentially pass through the left section tube 20 and the flow channel of the valve core 19 of the electric ball valve 18 of the second atomizing assembly 17, and finally enter the right section tube 21 of the electric ball valve 18 of the second atomizing assembly 17, as shown in FIG. Figure 22 As shown;

[0096] S244, control the first electromagnetic valve 39 to close, and control the second electromagnetic valve 40 to open, the bactericidal corrosion inhibitor passes through the water pump 12, the elbow 14, the second electromagnetic valve 40, the second hose 42, the atomizing pipe 8 of the second atomizing assembly 17, the inner cavity of the hemispherical shell 10 of the second atomizing assembly 17 in sequence under the pump pressure, and finally sprays out from each atomizing hole. The flow direction of the bactericidal corrosion inhibitor is as follows: Figure 22 As shown by the hollow arrow, during the spraying process, the liquid sterilization and corrosion inhibitor turns into a mist sterilization and corrosion inhibitor, thereby achieving the filling of the mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4, thereby filling the mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4 through the second atomizing assembly 17, and finally continuously filling the mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4;

[0097] S3. Replace the clogged atomizer head of the first atomizer assembly 16. The specific steps are as follows:

[0098] S31, control the drive motor 37 of the first atomizing assembly 16 to start, the drive motor 37 drives the gear 38 to rotate counterclockwise, the gear 38 drives the rack 25 to move left, the rack 25 drives the movable cylinder 24 of the first atomizing assembly 16 to move left, and at the same time, the slider 23 of the movable cylinder 24 moves left along the horizontal guide rail 22, and the movable cylinder 24 also drives the end cover 29, the locking cylinder 34, the atomizing tube 8, the disc 9 of the atomizing head and the hemispherical shell 10 to move left synchronously. When the movable cylinder 24 is separated from the electric ball valve 18 of the first atomizing assembly 16, as shown in FIG. Figure 23 As shown, the control driving motor 37 is turned off, and the disk 9 and the hemispherical shell 10 of the clogged atomizing head are just exposed outside the movable cylinder 24;

[0099] S32, the worker screws the blocked atomizer head exposed to the outside out from the atomizer pipe 8 to remove the atomizer head from the atomizer pipe 8; after it is removed, the worker screws the new atomizer head onto the atomizer pipe 8, as shown in FIG. Figure 24 As shown, the clogged atomizing head of the first atomizing assembly 16 is finally replaced;

[0100] Among them, it can be seen from this step S3 that the controller only needs to control the driving motor 37 to start, so that the movable cylinder 24 and the electric ball valve 18 can be automatically separated, thereby exposing the disk 9 and the hemispherical shell 10 of the clogged atomizer head to the outside of the movable cylinder 24, thereby facilitating the worker to quickly replace the clogged atomizer head. Figures 2 to 4 The filling device shown does not require the cover plate 7 to be disassembled and installed in succession, and the replacement process is reduced, thereby achieving the replacement of the clogged atomizing head in a short time, thereby not delaying the extraction of shale gas, and thereby increasing the extraction output of shale gas.

[0101] In addition, there is no need for workers to close the end valve 2 of the gas production tree 1 before replacing the atomizing head. Instead, the clogged atomizing head can be replaced without closing the end valve 2, thereby ensuring continuous shale gas production without delaying shale gas production, thereby further increasing shale gas production output.

[0102] S4. Make the new atomizer head enter the waiting position: control the drive motor 37 of the first atomizer assembly 16 to start, and the drive motor 37 drives the gear 38 to rotate clockwise. The gear 38 drives the rack 25 to move rightward, and the rack 25 drives the movable cylinder 24 of the first atomizer assembly 16 to move rightward. At the same time, the slider 23 of the movable cylinder 24 moves rightward along the horizontal guide rail 22. The movable cylinder 24 also drives the end cover 29, the locking cylinder 34, the atomizer tube 8, and the new atomizer head to move rightward synchronously. When the right end face of the movable cylinder 24 abuts against the electric ball valve 18 of the first atomizer assembly 16, control the drive motor 37 to turn off, so that the new atomizer head 43 enters the waiting position.

[0103] Among them, it can be seen from steps S2 to S4 that the continuous filling device can switch the atomizing head in the first atomizing component 16 and the atomizing head of the second atomizing component 17 back and forth through the linkage cooperation of the first atomizing component 16, the second atomizing component 17 and the liquid supply component 15. That is to say, when the atomizing hole of the atomizing head of the first atomizing component 16 is blocked, the second atomizing component 17 immediately fills the collection pipeline 4 with a mist of sterilizing and corrosion inhibitor, thereby realizing the continuous and automatic filling of the mist of sterilizing and corrosion inhibitor into the collection pipeline 4. It can be seen that compared with the above, the filling device Figures 2 to 4 The filling device shown can realize the continuous and automatic filling of the gathering pipeline 4 with a mist sterilizing slow etching agent, thereby avoiding the gathering pipeline 4 from being corroded and causing perforation on the gathering pipeline 4, thereby greatly improving the shale gas production.

[0104] In addition, the continuous filling device generates a pressure signal by pressing the pressure rod 30 onto the pressure sensor 28 to judge online whether the atomizing hole of the atomizing head is blocked, thereby more sensitively and quickly switching the atomizing head of the first atomizing assembly 16 and the atomizing head of the second atomizing assembly 17 back and forth, and there is no need for workers to replace the atomizing head regularly, thereby greatly reducing the workload of workers.

Claims

1. A filling device for continuously and automatically filling a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline, characterized by: It comprises a bracket (6) welded to a vertical section of a joint (3); a liquid supply assembly (15) for pumping and diverting a sterilizing and corrosion-inhibiting agent is provided on the bracket (6); a first atomizing assembly (16) and a second atomizing assembly (17) capable of automatically detecting whether an atomizing head is blocked and automatically retreating are provided between the joint (3) and the bracket (6); the first atomizing assembly (16) and the second atomizing assembly (17) are both connected to the liquid supply assembly (15); The first atomizing assembly (16) includes an electric ball valve (18) arranged on a vertical section of the joint (3), a valve core (19) of the electric ball valve (18) cuts off the left section pipe (20) and the right section pipe (21) of the electric ball valve (18), the right section pipe (21) of the electric ball valve (18) is welded to the joint (3) and communicates with the joint (3), a horizontal guide rail (22) is welded on the left end surface of the left section pipe (20) of the electric ball valve (18), a slider (23) is slidably mounted on the horizontal guide rail (22), a movable cylinder (24) is welded to the bottom end of the slider (23), and a rack (25) is welded on the bottom surface of the movable cylinder (24) along its axial direction; A partition plate (26) with a central hole is welded inside the movable cylinder (24), a connecting rod (27) is welded on the right end surface of the partition plate (26), a pressure sensor (28) is fixed on the right end of the connecting rod (27), and a signal line of the pressure sensor (28) passes through the rear wall of the movable cylinder (24) backward; The right end face of the movable cylinder (24) abuts against the left end face of the left section tube (20) of the electric ball valve (18), and the inner cavity of the movable cylinder (24) is connected to the left section tube (20), and the left end face of the movable cylinder (24) is connected to the end cover (29), and the atomizing tube (8) is slidably installed in the end cover (29), and the right end of the atomizing tube (8) passes through the center hole of the partition (26) to the right and extends into the left section tube (20) of the electric ball valve (18), and the extended end of the atomizing tube (8) is detachably connected to the valve core (19) on the left side of the electric ball valve (18). An atomizing head, wherein a horizontally arranged pressure rod (30) is fixedly provided on the left end surface of the atomizing head, and the left end surface of the pressure rod (30) presses against the pressure sensor (28); a spring (31) in a compressed state is sleeved on the atomizing tube (8), the left end of the spring (31) is fixedly provided on the left end surface of the partition (26), and the right end of the spring (31) is fixedly provided on the left end surface of the atomizing head; an annular block (32) located between the partition (26) and the end cover (29) is welded on the cylindrical surface of the atomizing tube (8), and a slot (33) is provided on the top surface of the annular block (32); A locking electric cylinder (34) is fixedly provided on the top surface of the movable cylinder (24) and is located on the left side of the horizontal guide rail (22). The piston rod of the locking electric cylinder (34) extends into the movable cylinder (24) and is connected to an insert block (35) on the extended end. The insert block (35) is inserted into the slot (33) of the annular block (32) to lock the atomizing tube (8). The first atomizing assembly (16) further includes a transverse plate (36) fixedly mounted on the bracket (6) and located directly below the movable cylinder (24). A frame is fixedly mounted on the right end portion of the transverse plate (36). A driving motor (37) is fixedly mounted on the frame. The output shaft of the driving motor (37) extends into the frame, and a gear (38) is mounted on the extended end. The gear (38) is meshed with the rack (25) of the movable cylinder (24).

2. The device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 1, characterized in that: The first atomizing assembly (16) and the second atomizing assembly (17) are arranged symmetrically up and down.

3. The device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 2, characterized in that: The right section pipe (21) of the electric ball valve (18), the flow passage of the valve core (19) and the left section pipe (20) are on the same horizontal straight line, and the inner diameter of the right section pipe (21) of the electric ball valve (18) is equal to the flow passage diameter of the valve core (19), and the inner diameter of the left section pipe (20) of the electric ball valve (18) is equal to the flow passage diameter of the valve core (19).

4. The device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 3, characterized in that: The atomizing head comprises a disc (9) threadedly connected to the right end of the atomizing tube (8), the disc (9) slidingly cooperates with the left section tube (20) of the electric ball valve (18), and a hemispherical shell (10) is fixedly provided at the right end of the disc (9), and a plurality of atomizing holes are opened on the spherical surface of the hemispherical shell (10).

5. The device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 4, characterized in that: The right end of the spring (31) is fixed on the left end surface of the disk (9) of the atomizing head, and the pressure rod (30) is fixed on the left end surface of the disk (9) of the atomizing head.

6. The device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 5, characterized in that: The liquid supply assembly (15) includes a water pump (12) and a bactericidal corrosion inhibitor storage tank (13) fixedly mounted on the top surface of the bracket (6); a liquid extraction pipe of the water pump (12) is connected to the bactericidal corrosion inhibitor storage tank (13); a curved pipe (14) is connected to the liquid discharge pipe of the water pump (12); the end of the curved pipe (14) passes through the bracket (6), and the extended end is closed; the bottom end and the top end of the curved pipe (14) are respectively connected to a first solenoid valve (39) and a second solenoid valve (40); in an initial state, the first solenoid valve (39) and the second solenoid valve (40) are both in a closed state.

7. The device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 6, characterized in that: A first hose (41) is connected to the end of the first solenoid valve (39), and the other end of the first hose (41) is connected to the left end of the atomizing pipe (8) of the first atomizing assembly (16); a second hose (42) is connected to the end of the second solenoid valve (40), and the other end of the second hose (42) is connected to the left end of the atomizing pipe (8) of the second atomizing assembly (17).

8. The device for continuously and automatically injecting a bactericidal and corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 7, characterized in that: The filling device further includes a controller connected to the drive motor (37), the electric ball valve (18), the first solenoid valve (39), the second solenoid valve (40), a signal line of the pressure sensor (28), the water pump (12), and the locking electric cylinder (34).

9. A method for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline, using the device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 8, characterized in that: It includes the following steps: S1. Open the end valve (2) of the Christmas tree (1). Shale gas extracted from the well under pressure passes through the main channel of the Christmas tree (1), the end valve (2), the joint (3) and finally enters the gathering pipeline (4). The shale gas then flows to the designated processing equipment through the gathering pipeline (4); S2. Continuously and automatically add a mist sterilization and corrosion inhibitor into the gathering and transportation pipeline (4). The specific operation steps are as follows: S21, controlling the electric ball valve (18) of the first atomizing assembly (16) to start, and the valve core (19) of the electric ball valve (18) of the first atomizing assembly (16) to rotate horizontally by 90 degrees, at which time, the valve core (19) connects the left section pipe (20) and the right section pipe (21); S22, the piston rod of the locking electric cylinder (34) of the first atomizing assembly (16) is controlled to retract upward, and the piston rod drives the plug (35) to move upward. When the plug (35) is disengaged from the slot (33) of the annular block (32) of the atomizing tube (8), under the elastic restoring force of the spring (31), the spring (31) pushes the disk (9) and the hemispherical shell (10) of the atomizing head to move rightward. The disk (9) and the hemispherical shell (10) of the atomizing head sequentially pass through the left section tube (20) and the flow channel of the valve core (19) of the electric ball valve (18) of the first atomizing assembly (16), and finally enter the right section tube (21) of the electric ball valve (18) of the first atomizing assembly (16); S23, control the first electromagnetic valve (39) to open, and then control the water pump (12) to start, the water pump (12) extracts the bactericidal corrosion inhibitor in the bactericidal corrosion inhibitor storage tank (13), and under the pump pressure, the bactericidal corrosion inhibitor passes through the water pump (12), the elbow (14), the first electromagnetic valve (39), the first hose (41), the atomizing tube (8) of the first atomizing assembly (16), the inner cavity of the hemispherical shell (10) of the first atomizing assembly (16), and finally sprayed out from each atomizing hole. During the spraying process, the liquid bactericidal corrosion inhibitor is converted into a mist bactericidal corrosion inhibitor, thereby realizing the addition of the mist bactericidal corrosion inhibitor into the gathering and transportation pipeline (4), and the mist bactericidal corrosion inhibitor kills bacteria entrained in the shale gas; S24. After a period of filling, most of the atomizing holes of the atomizing head of the first atomizing assembly (16) are blocked by the particles carried by the shale gas. At this time, the shale gas entering the joint (3) acts on the spherical surface of the hemispherical shell (10) of the atomizing head. Under the pressure of the shale gas, the hemispherical shell (10) drives the pressure rod (30) to move to the left and gradually compresses the spring (31). When the pressure rod (30) of the first atomizing assembly (16) presses the pressure sensor (28), the pressure sensor (28) sends a pressure signal to the controller via the signal line. After the controller receives the pressure signal, the controller controls the second atomizing assembly (17) to start the operation steps as follows: S241, the controller controls the electric ball valve (18) of the first atomizing assembly (16) to close, and the valve core (19) of the electric ball valve (18) rotates horizontally by 90 degrees, and the valve core (19) cuts off the left section pipe (20) and the right section pipe (21); then the controller controls the piston rod of the locking electric cylinder (34) of the first atomizing assembly (16) to extend downward, and the piston rod drives the insert block (35) to move downward, and the insert block (35) is inserted into the card groove of the annular block (32) of the first atomizing assembly (16) to lock the atomizing pipe (8) of the first atomizing assembly (16); S242, the controller controls the electric ball valve (18) of the second atomizing assembly (17) to start, and the valve core (19) of the electric ball valve (18) of the second atomizing assembly (17) rotates horizontally by 90 degrees. At this time, the valve core (19) connects the left section of the pipe (20) and the right section of the pipe (21); S243, the controller controls the piston rod of the locking electric cylinder (34) of the second atomizing assembly (17) to retract downward, and the piston rod drives the plug (35) to move downward. When the plug (35) is disengaged from the slot (33) of the annular block (32) of the atomizing tube (8), under the elastic restoring force of the spring (31), the spring (31) pushes the disk (9) and the hemispherical shell (10) of the atomizing head to move rightward. The disk (9) and the hemispherical shell (10) of the atomizing head sequentially pass through the left section tube (20) and the flow channel of the valve core (19) of the electric ball valve (18) of the second atomizing assembly (17), and finally enter the right section tube (21) of the electric ball valve (18) of the second atomizing assembly (17); S244, control the first electromagnetic valve (39) to close, and control the second electromagnetic valve (40) to open, and the sterilization corrosion inhibitor passes through the water pump (12), the elbow (14), the second electromagnetic valve (40), the second hose (42), the atomization tube (8) of the second atomization component (17), the inner cavity of the hemispherical shell (10) of the second atomization component (17) in sequence under the pump pressure, and finally is sprayed out from each atomization hole. During the spraying process, the liquid sterilization corrosion inhibitor is converted into a mist sterilization corrosion inhibitor, thereby realizing the addition of the mist sterilization corrosion inhibitor into the collection pipeline (4), thereby adding the mist sterilization corrosion inhibitor into the collection pipeline (4) through the second atomization component (17), and finally continuously adding the mist sterilization corrosion inhibitor into the collection pipeline (4); S3. Replace the clogged atomizing head of the first atomizing assembly (16). The specific operation steps are as follows: S31, control the driving motor (37) of the first atomizing assembly (16) to start, the driving motor (37) drives the gear (38) to rotate counterclockwise, the gear (38) drives the rack (25) to move leftward, the rack (25) drives the movable cylinder (24) of the first atomizing assembly (16) to move leftward, and at the same time, the slider (23) of the movable cylinder (24) moves leftward along the horizontal guide rail (22), and the movable cylinder (24) also drives the end cover (29), the locking electric cylinder (34), the atomizing tube (8), the disc (9) and the hemispherical shell (10) of the atomizing head to move leftward synchronously. When the movable cylinder (24) is separated from the electric ball valve (18) of the first atomizing assembly (16), the driving motor (37) is controlled to be closed, and the blocked disc (9) and the hemispherical shell (10) of the atomizing head are just exposed outside the movable cylinder (24); S32, the worker rotates the blocked atomizer head exposed to the outside outward from the atomizer tube (8) to remove the atomizer head from the atomizer tube (8); after the atomizer head is removed, the worker screws a new atomizer head onto the atomizer tube (8), thereby finally replacing the blocked atomizer head of the first atomizer assembly (16); S4, making the new atomizer head enter the waiting position: control the drive motor (37) of the first atomizer assembly (16) to start, the drive motor (37) drives the gear (38) to rotate clockwise, the gear (38) drives the rack (25) to move rightward, the rack (25) drives the movable cylinder (24) of the first atomizer assembly (16) to move rightward, and at the same time, the slider (23) of the movable cylinder (24) moves rightward along the horizontal guide rail (22), and the movable cylinder (24) also drives the end cover (29), the locking electric cylinder (34), the atomizer tube (8), and the new atomizer head to move rightward synchronously. When the right end face of the movable cylinder (24) abuts against the electric ball valve (18) of the first atomizer assembly (16), the drive motor (37) is controlled to be closed, so that the new atomizer head (43) enters the waiting position.

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