Filling device and method for continuously and automatically filling sterilizing corrosion inhibitor into shale gas gathering and transportation pipeline

Abstract

The invention discloses a filling device and method for continuously and automatically filling a sterilizing corrosion inhibitor into a shale gas gathering and transportation pipeline, and relates to the technical field of continuously filling the sterilizing corrosion inhibitor into the shale gas gathering and transportation pipeline. The support is provided with a liquid supply assembly used for pumping and shunting the sterilization corrosion inhibitor, a first atomization assembly and a second atomization assembly which can automatically monitor whether the atomization head is blocked or not and can automatically return are arranged between the connector and the support, and the first atomization assembly and the second atomization assembly are both connected with the liquid supply assembly; the first atomization assembly further comprises a transverse plate which is fixedly arranged on the support and located under the movable cylinder, an output shaft of the driving motor extends into the rack, a gear is installed at the extending end of the output shaft, and the gear is meshed with the rack of the movable cylinder. The device has the beneficial effects that vaporific sterilization slow etching can be continuously and automatically injected into the gathering and transportation pipeline, the shale gas exploitation yield is greatly improved, and the working intensity of workers is relieved.

Description

Technical Field

[0001] The 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 gas tree 1 fixed on the wellhead, a joint 3 fixed on the end valve 2 of the gas tree 1, and the end of the joint 3 is connected to a gathering pipeline 4. The shale gas extracted from the well, under gas pressure, passes through the main channel of the gas tree 1, the end valve 2, the joint 3 and finally enters the gathering pipeline 4. The flow direction of the shale gas is as shown in FIG. Figure 1 As shown by the solid arrow in the figure, the shale gas then flows to the designated processing equipment through the gathering and transportation pipeline 4. Since the shale gas produced from the well also contains bacteria [including iron bacteria, saprophytes and sulfate-reducing bacteria], the bacteria corrode the gathering and transportation pipeline 4 and cause perforations on the gathering and transportation pipeline 4, which in turn causes the shale gas to leak to the outside through the holes on the gathering and transportation pipeline 4, thereby reducing the production of shale gas.

[0003] To this end, workers will install a dripping device on the joint 3, and drip a bactericidal corrosion inhibitor into the joint 3 through the dripping device, and the bactericidal corrosion inhibitor kills the bacteria entrained in the shale gas. Although this dripping device can kill bacteria entrained in the shale gas, the injected bactericidal corrosion inhibitor is in the form of droplets, and the contact area with the bacteria is small, which leads to poor sterilization effect, and also wastes a lot of bactericidal corrosion inhibitor, which increases the sterilization cost.

[0004] To solve the above problems, 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 barrel 5 and a bracket 6 welded on the side wall of the vertical section of the joint 3, the barrel 5 is communicated with the joint 3, a cover plate 7 is connected to the left end surface of the barrel 5 via a plurality of screws, an atomizing tube 8 is welded inside the cover plate 7, an atomizing head located in the barrel 5 is detachably connected to the right end of the atomizing tube 8, 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, and a plurality of atomizing holes are opened on the spherical surface of the hemispherical shell 10; a water pump 12 and a bactericidal corrosion inhibitor storage tank 13 are fixedly provided on the top surface of the bracket 6, a liquid extraction pipe of the water pump 12 is communicated with the bactericidal corrosion inhibitor storage tank 13, a curved pipe 14 is connected to the liquid discharge pipe of the water pump 12, and the terminal end of the curved pipe 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 sterilizing and corrosion inhibitor into the gathering and transportation pipeline 4 is: 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 in sequence and finally sprays out from each atomizing small 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 bactericidal corrosion inhibitor is transformed into a mist-like bactericidal corrosion inhibitor, thereby realizing the filling of the mist-like bactericidal corrosion inhibitor into the gathering and transportation pipeline 4.

[0007] However, although this filling device can fill the mist sterilization and corrosion inhibitor into the gathering and transportation pipeline 4, it still reflects the following technical defects in actual use: 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 add the mist sterilizing and corrosion inhibitor into the gathering and transportation pipeline 4, which will cause the bacteria that continuously enter the gathering and transportation pipeline 4 from the well to corrode it. Therefore, this filling device cannot continuously add the mist sterilizing and corrosion inhibitor into the gathering and transportation pipeline 4. At the same time, it will cause the gathering and transportation pipeline 4 to corrode and cause perforation on the gathering and transportation pipeline 4, thereby reducing the shale gas production.

[0008] II. In order to prevent the gathering and transportation pipeline 4 from being corroded by bacteria carried by 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: S1. The worker first closes the end valve 2 of the gas tree 1, so that the shale gas extracted from the well no longer enters the gathering and transportation pipeline 4; S2, the worker manually removes the multiple screws between the cylinder 5 and the cover plate 7 to remove the cover plate 7; S3, moves the cover plate 7 to the left to take the atomizer head out of the cylinder 5, such as Figure 4 As shown, the worker manually rotates the disk 9 of the atomizing head out from the atomizing tube 8 to remove the atomizing head from the atomizing tube 8; S4. The worker screws the new atomizer head onto the atomizer tube 8, puts 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; S5. The worker opens the end valve 2 of the gas 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.

[0009] Although this method of periodically 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 disassemble and install the cover plate 7 in turn, 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.

[0010] 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 work intensity of workers. Summary of the invention

[0011] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a device and method for continuously and automatically adding a mist of sterilizing and corrosion inhibiting agents into a shale gas gathering and transportation pipeline, which can greatly increase the shale gas production output and reduce the workload of workers.

[0012] The object of the present invention is 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 component for pumping and diverting the bactericidal corrosion inhibitor is arranged on the bracket, a first atomizing component and a second atomizing component that can automatically monitor whether an atomizing head is blocked and can automatically retreat are arranged between the joint and the bracket, and the first atomizing component and the second atomizing component are both connected to the liquid supply component; The first atomizing assembly comprises an electric ball valve arranged on the vertical section of the joint, the valve core of the electric ball valve cuts off the left section pipe and the right section pipe of the electric ball valve, the right section pipe of the electric ball valve is welded to the joint and is connected to the joint, a horizontal guide rail is welded on the left end surface of the left section pipe of the electric ball valve, a slider is slidably mounted on the horizontal guide rail, a movable cylinder is welded on the bottom end of the slider, and a rack is welded on the bottom surface of the movable cylinder along its axial direction; 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 backwards; 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, an end cover is connected to the left end surface of the movable cylinder, an atomizing tube is slidably installed in the end cover, the right end portion of the atomizing tube penetrates the central hole of the partition to the right and extends into the left section tube of the electric ball valve, an atomizing head located on the left side of the valve core of the electric ball valve is detachably connected to the extended end of the atomizing tube, a horizontally arranged pressure rod is fixedly arranged on the left end surface of the atomizing head, and the left end surface of the pressure rod presses against the pressure sensor; a spring in a compressed state is sleeved on the atomizing tube, the left end portion of the spring is fixedly arranged on the left end surface of the partition, and the right end portion of the spring is fixedly arranged 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; A locking electric cylinder is fixedly arranged 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 block is connected to the extending end. The insert block is inserted into the slot of the annular block to lock the atomizer tube. The first atomization assembly also includes a horizontal plate fixedly mounted on the bracket and located directly below the movable cylinder. A frame is fixedly mounted on the right end of the horizontal plate, a driving motor is fixedly mounted on the frame, an output shaft of the driving motor extends into the frame, and a gear is installed on the extended end, the gear is meshed with the rack of the movable cylinder.

[0013] The first atomization assembly and the second atomization assembly are symmetrically arranged up and down.

[0014] 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 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.

[0015] The atomizing head comprises a disc threadedly connected to the right end of the atomizing tube, the disc slidingly cooperates with the left tube section of the electric ball valve, a hemispherical shell is fixedly arranged on the right end of the disc, and a plurality of atomizing holes are opened on the spherical surface of the hemispherical shell.

[0016] The right end of the spring is fixedly arranged on the left end surface of the disk of the atomizing head, and the pressure rod is fixedly arranged on the left end surface of the disk of the atomizing head.

[0017] The liquid supply assembly includes a water pump and a bactericidal corrosion inhibitor storage tank fixedly mounted on the top surface of the bracket. The liquid suction pipe of the water pump is connected to the bactericidal corrosion inhibitor storage tank. The discharge pipe of the water pump 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 an initial state, the first solenoid valve and the second solenoid valve are both in a closed state.

[0018] A first hose is connected to the end of the first solenoid valve, and the other end of the first hose is connected to the left end of the atomizer tube of the first atomizer assembly; a second hose is connected to the end of the second solenoid valve, and the other end of the second hose is connected to the left end of the atomizer tube of the second atomizer assembly.

[0019] 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.

[0020] A method for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline comprises the following steps: S1. Open the end valve of the gas tree. The shale gas produced from the well under gas pressure passes through the main channel of the gas tree, the end valve, and the joint in sequence and finally enters the gathering and transportation pipeline. The shale gas then flows to the designated processing equipment through the gathering and transportation pipeline; S2. Continuously and automatically add aerosol sterilization and corrosion inhibitor into the gathering and transportation pipeline. The specific operation steps are as follows: S21, controlling the electric ball valve of the first atomizing assembly to start, the valve core of the electric ball valve of the first atomizing assembly is horizontally rotated 90 degrees, at which time the valve core connects the left section pipe with the right section pipe; 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 plug block to move upward. When the plug block is disengaged from the slot of the annular block of the atomizer tube, the spring pushes the disk and the hemispherical shell of the atomizer head to move rightward under the elastic restoring force of the spring. The disk and the hemispherical shell of the atomizer head sequentially pass through the left section tube and the flow channel of the valve core of the electric ball valve of the first atomizer assembly, and finally enter the right section tube of the electric ball valve of the first atomizer assembly; S23, control the first solenoid valve to open, and then control the water pump to start, the water pump extracts the bactericidal corrosion inhibitor in 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 tube of the first atomizing assembly, the inner cavity of the hemispherical shell of the first atomizing assembly in sequence, and finally sprays out from each atomizing hole, during the spraying process, the liquid bactericidal corrosion inhibitor becomes a mist bactericidal corrosion inhibitor, thereby realizing the filling of the mist bactericidal corrosion inhibitor into the gathering and transportation pipeline, and the mist bactericidal corrosion inhibitor kills the 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 will be blocked by the 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 move to the left and gradually compresses the spring. When the pressure rod of the first atomizing assembly presses the pressure sensor, the pressure sensor 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 to start in the following steps: 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, and the valve core cuts off the left section pipe and the right section pipe; then the controller controls the piston rod of the locking electric cylinder of the first atomizer assembly to extend downward, and the piston rod drives the plug to move downward, and the plug is inserted into the card groove of the annular block of the first atomizer assembly to lock the atomizer pipe of the first atomizer assembly; S242, the controller controls the electric ball valve of the second atomizing assembly to start, and the valve core of the electric ball valve of the second atomizing assembly rotates horizontally by 90°, at which time the valve core connects the left section pipe with the right section pipe; S243, the controller controls the piston rod of the locking electric cylinder of the second atomizer assembly to retract downward, and the piston rod drives the plug to move downward. When the plug is disengaged from the slot of the annular block of the atomizer tube, the spring pushes the disk and the hemispherical shell of the atomizer head to move rightward under the elastic restoring force of the spring. The disk and the hemispherical shell of the atomizer head sequentially pass through the left section tube and the flow channel of the valve core of the electric ball valve of the second atomizer assembly, and finally enter the right section tube of the electric ball valve of the second atomizer assembly; S244, control the first solenoid valve to close, and control the second solenoid valve to open, the bactericidal 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 bactericidal corrosion inhibitor is converted into a mist-like bactericidal corrosion inhibitor, thereby realizing the filling of the mist-like bactericidal corrosion inhibitor into the collecting and transporting pipeline, thereby filling the mist-like bactericidal corrosion inhibitor into the collecting and transporting pipeline through the second atomizing assembly, and finally continuously filling the mist-like bactericidal corrosion inhibitor into the collecting and transporting pipeline; S3, replacing the clogged atomizer head of the first atomizer assembly, the specific operation steps are: S31, control the drive motor of the first atomizer assembly 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, and at the same time, the slider of the movable cylinder moves leftward along the horizontal guide rail, and the movable cylinder also drives the end cover, the locking electric 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 be turned off, and the blocked disc and the hemispherical shell of the atomizer head are just exposed outside the movable cylinder; S32, the worker rotates the blocked atomizer head exposed to the outside outward from the atomizer tube to remove the atomizer head from the atomizer tube; after the atomizer head is removed, the worker rotates a new atomizer head into the atomizer tube, thereby finally replacing the blocked atomizer head of the first atomizer assembly; S4, making 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 rightward, the rack drives the movable cylinder of the first atomizer assembly to move rightward, and at the same time, the slider of the movable cylinder moves rightward along the horizontal guide rail, and the movable cylinder also drives the end cover, the locking electric cylinder, the atomizer tube, and the new atomizer head to move rightward 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 close, so that the new atomizer head enters the waiting position.

[0021] 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

[0022] Figure 1 A schematic diagram of the structure of the gas production system used in a certain area; Figure 2 It is a structural schematic diagram of an existing filling device; Figure 3 A schematic diagram of an existing filling device filling a mist-like bactericidal corrosion inhibitor into a gathering and transportation pipeline; Figure 4 A schematic diagram of removing the atomizer head from the cylinder; Figure 5 It is a structural schematic diagram of the present invention; Figure 6 for Figure 5 The main cross-sectional diagram of Figure 7 is a schematic structural diagram of a first atomization assembly; Figure 8 for Figure 7 The main cross-sectional diagram of Fig. 9 for Figure 8 Schematic diagram of the connection between the electric ball valve and the horizontal guide rail; Fig.10 for Figure 8 Schematic diagram of the connection between the movable cylinder, pressure sensor, rack and locking electric cylinder; Fig.11 for Figure 8 Schematic diagram of the connection between the atomizing tube, the atomizing head and the pressure rod; Fig.12 for Fig.11 The main cross-sectional diagram of Fig.13 It is a connection diagram of the cross plate, driving motor and gear; Fig.14 It is a structural schematic diagram of the liquid supply component; Fig.15 for Fig.14 The main cross-sectional diagram of Fig.16 This is a schematic diagram of the flow direction of shale gas; Fig.17 It is a schematic diagram of the valve core of the electric ball valve of the first atomization assembly connecting the left section pipe and the right section pipe; Fig.18 It is a schematic diagram of the atomizing head of the first atomizing assembly entering the right section of the electric ball valve; Fig.19 It is a schematic diagram of the pressure rod of the first atomization assembly pressing onto the pressure sensor; Fig. 20 A schematic diagram showing that the valve core of the electric ball valve of the first atomizing assembly cuts off the left pipe section and the right pipe section; Fig.21 A schematic diagram of the valve core of the electric ball valve of the second atomization assembly connecting the left section pipe and the right section pipe; Fig. 22 It 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; Fig.23 It is a schematic diagram of the movable cylinder and the electric ball valve of the first atomizing assembly after being separated; Fig.24 This is a schematic diagram of a new atomizer head entering the waiting position; In the figure: 1-gas tree, 2-end valve, 3-connector, 4-gathering pipeline, 5-cylinder, 6-bracket, 7-cover plate, 8-atomizing pipe, 9-disc, 10-hemispherical shell, 12-water pump, 13-bactericide and corrosion inhibitor storage tank, 14-elbow pipe; 15-liquid supply assembly, 16-first atomization assembly, 17-second atomization assembly; 18-electric ball valve, 19-valve core, 20-left section pipe, 21-right section pipe, 22-horizontal guide rail, 23-slider, 24-movable cylinder, 25-rack, 26-partition, 27-connecting rod, 28-pressure sensor; 29-end cover, 30-pressure rod, 31-spring, 32-annular block, 33-slot, 34-locking electric cylinder, 35-insertion block, 36-cross plate, 37-drive motor, 38-gear; 39-first solenoid valve, 40-second solenoid valve, 41-first hose, 42-second hose, 43-new atomizing head. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following: like Figure 5~Figure 15 As 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, on which a liquid supply assembly 15 for pumping and diverting the bactericidal corrosion inhibitor is provided, and between the joint 3 and the bracket 6, a first atomizing assembly 16 and a second atomizing assembly 17 which can automatically monitor whether an atomizing head is blocked and can automatically retreat are provided, the first atomizing assembly 16 and the second atomizing assembly 17 are symmetrically arranged up and down, and the first atomizing assembly 16 and the second atomizing assembly 17 are both connected to the liquid supply assembly 15.

[0024] 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 connected 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 installed 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.

[0025] A partition plate 26 with a center 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 fixedly provided 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 backwards.

[0026] The right end surface of the movable cylinder 24 abuts against the left end surface 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. An end cover 29 is connected to the left end surface of the movable cylinder 24, and an atomization tube 8 is slidably installed in the end cover 29. The right end portion of the atomization tube 8 passes through the central hole of the partition 26 to the right and extends into the left section tube 20 of the electric ball valve 18. An atomization head located on the left side of the valve core 19 of the electric ball valve 18 is detachably connected to the extended end of the atomization tube 8. The atomization head includes a disc 9 threadedly connected to the right end portion of the atomization tube 8, and the disc 9 is slidably matched with the left section tube 20 of the electric ball valve 18. A hemispherical shell 10 is fixedly provided on the right end portion of the disc 9, and a plurality of atomization holes are provided on the spherical surface of the hemispherical shell 10. A horizontally arranged pressure rod 30 is fixed on the left end surface of the atomizer 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 atomizer tube 8, the left end of the spring 31 is fixed on the left end surface of the partition 26, and the right end of the spring 31 is fixed on the left end surface of the atomizer head. An annular block 32 located between the partition 26 and the end cover 29 is welded on the cylindrical surface of the atomizer tube 8, and a slot 33 is provided on the top surface of the annular block 32. The right end of the spring 31 is fixed on the left end surface of the disk 9 of the atomizer head, and the pressure rod 30 is fixed on the left end surface of the disk 9 of the atomizer head.

[0027] A locking electric cylinder 34 located on the left side of the horizontal guide rail 22 is fixedly provided on the top surface of the movable cylinder 24, and 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, and 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, a driving motor 37 is fixedly provided on the frame, the output shaft of the driving motor 37 extends into the frame, and a gear 38 is installed on the extended end, and the gear 38 is meshed with the rack 25 of the movable cylinder 24.

[0028] 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.

[0029] 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 pipe 14. The end of the bend pipe 14 passes through the bracket 6, and the extended end is closed. The bottom and top ends of the bend pipe 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, 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; the end of the second solenoid valve 40 is connected to a second hose 42, 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.

[0030] 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.

[0031] A method for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline comprises the following steps: S1. Open the terminal valve 2 of the gas tree 1. The shale gas produced from the well will enter the gathering and transportation pipeline 4 through the main channel of the gas tree 1, the terminal valve 2, the joint 3, etc. under the pressure. The flow direction of the shale gas is as follows: Fig.16 As shown by the solid arrow in the middle, the shale gas then flows to the designated processing equipment through the gathering and transportation pipeline 4; S2, continuously and automatically add aerosol sterilization and corrosion inhibitor into the gathering and transportation pipeline 4, and the specific operation steps are as follows: 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 horizontally rotated 90 degrees. At this time, the valve core 19 connects the left section pipe 20 and the right section pipe 21. Fig.17 As shown; 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 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, and 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, as shown in FIG. Fig.18As shown; S23, control the first solenoid 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 solenoid valve 39, the first hose 41, the atomizing tube 8 of the first atomizing assembly 16, and the inner cavity of the hemispherical shell 10 of the first atomizing assembly 16 in sequence, and the flow direction of the bactericidal corrosion inhibitor is as follows: Fig.18 As shown by the hollow arrows, the liquid bactericidal corrosion inhibitor is finally sprayed out from each atomizing 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 the 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 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 leftward 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. Fig.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 atomization 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, such as Fig. 20 As shown; then the controller controls the piston rod of the locking electric cylinder 34 of the first atomization 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 atomization assembly 16 to lock the atomization tube 8 of the first atomization 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 pipe 20 with the right section pipe 21, as shown in FIG. Fig.21 As shown; 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 block 35 to move downward. When the plug 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 disk 9 and the hemispherical shell 10 of the atomizing head to move rightward, and 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, as shown in FIG. Fig. 22 As shown; 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 tube 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: Fig. 22 As shown by the hollow arrow, during the spraying process, the liquid sterilization and corrosion inhibitor is transformed into a mist sterilization and corrosion inhibitor, thereby realizing the filling of the mist sterilization and corrosion inhibitor into the collecting and transporting pipeline 4, thereby filling the mist sterilization and corrosion inhibitor into the collecting and transporting pipeline 4 through the second atomizing assembly 17, and finally continuously filling the mist sterilization and corrosion inhibitor into the collecting and transporting pipeline 4; S3, replacing the clogged atomizer head of the first atomizer assembly 16, the specific operation steps are: 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 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 disk 9 of the atomizing head and the hemispherical shell 10 to move leftward synchronously. When the movable cylinder 24 is separated from the electric ball valve 18 of the first atomizing assembly 16, as shown in FIG. Fig.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; S32, the worker rotates the blocked atomizer head exposed to the outside out from the atomizer tube 8 to remove the atomizer head from the atomizer tube 8; after the atomizer head is removed, the worker rotates the new atomizer head into the atomizer tube 8, as shown in FIG. Fig.24 As shown, the blocked atomizing head of the first atomizing assembly 16 is finally replaced; It can be seen from step S3 that the controller only needs to control the drive 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. Figure 2~Figure 4 The filling device shown does not need to dismantle and install the cover plate 7 in succession, and has fewer replacement steps, thereby achieving replacement of the clogged atomizer head in a short time, thereby not delaying the extraction of shale gas, and further increasing the extraction output of shale gas.

[0032] In addition, there is no need for workers to close the end valve 2 of the gas production tree 1 before replacing the atomizer head. Instead, the clogged atomizer head can be replaced without closing the end valve 2, so that the shale gas extraction operation is continuous and the shale gas extraction will not be delayed, thereby further increasing the shale gas extraction output.

[0033] 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 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.

[0034] 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 atomized bactericidal corrosion inhibitor, thereby realizing the continuous and automatic filling of atomized bactericidal corrosion inhibitor into the collection pipeline 4. It can be seen that compared with the above, the filling device Figure 2~Figure 4 The filling device shown can realize 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 perforated, thereby greatly improving the shale gas production.

[0035] In addition, the continuous filling device generates a pressure signal by pressing the pressure rod 30 onto the pressure sensor 28 to determine 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 heads 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 in that: It comprises a bracket (6) welded to a vertical section of a joint (3); a liquid supply assembly (15) for pumping and diverting a bactericidal corrosion inhibitor is arranged on the bracket (6); a first atomizing assembly (16) and a second atomizing assembly (17) which can automatically monitor whether an atomizing head is blocked and can automatically retract are arranged 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) comprises an electric ball valve (18) arranged on a 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 in communication with the joint (3); a horizontal guide rail (22) is welded to 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); a rack (25) is welded to 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 fixedly provided at 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) backwards; The right end surface of the movable cylinder (24) abuts against the left end surface 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). The left end surface of the movable cylinder (24) is connected to an end cover (29), and an atomizing tube (8) is slidably installed in the end cover (29). The right end of the atomizing tube (8) penetrates the center hole of the partition plate (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 a valve core (19) located on the left side of the electric ball valve (18). An atomizer head, wherein a horizontally arranged pressure rod (30) is fixedly arranged on the left end surface of the atomizer 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 atomizer tube (8), the left end of the spring (31) is fixedly arranged on the left end surface of the partition (26), and the right end of the spring (31) is fixedly arranged on the left end surface of the atomizer head; an annular block (32) located between the partition (26) and the end cover (29) is welded on the cylindrical surface of the atomizer tube (8), and a clamping groove (33) is opened 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 an insert block (35) is connected to 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 comprises a horizontal 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 of the horizontal plate (36); a driving motor (37) is fixedly mounted on the frame; an output shaft of the driving motor (37) extends into the frame, and a gear (38) is mounted on the extended end; the gear (38) meshes with a rack (25) of the movable cylinder (24).

2. The device for continuously and automatically injecting a bactericidal and corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 1 is 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 and corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 2 is characterized in that: The right pipe section (21) of the electric ball valve (18), the flow passage of the valve core (19) and the left pipe section (20) are located on the same horizontal straight line, and the inner diameter of the right pipe section (21) of the electric ball valve (18) is equal to the diameter of the flow passage of the valve core (19), and the inner diameter of the left pipe section (20) of the electric ball valve (18) is equal to the diameter of the flow passage of the valve core (19).

4. The device for continuously and automatically injecting a bactericidal and corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 3 is characterized in that: The atomizing head comprises a disc (9) threadedly connected to the right end of the atomizing tube (8), the disc (9) slidably cooperates with the left tube section (20) of the electric ball valve (18), a hemispherical shell (10) is fixedly arranged 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 filling device for continuously and automatically filling a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 4 is characterized in that: The right end of the spring (31) is fixedly mounted on the left end surface of the disk (9) of the atomizing head, and the pressure rod (30) is fixedly mounted on the left end surface of the disk (9) of the atomizing head.

6. The device for continuously and automatically injecting a bactericidal and corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 5 is characterized in that: The liquid supply assembly (15) comprises a water pump (12) and a bactericidal corrosion inhibitor storage tank (13) fixedly mounted on the top surface of a 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 and corrosion inhibitor into a shale gas gathering and transportation pipeline according to claim 6 is 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 tube (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 tube (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 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 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 injecting device for continuously and automatically injecting a bactericidal corrosion inhibitor into a shale gas gathering and transportation pipeline as claimed in claim 8, characterized in that: It includes the following steps: S1. Open the end valve (2) of the gas tree (1), and the shale gas extracted from the well under gas pressure passes through the main channel of the gas 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 injecting a mist sterilizing 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) is horizontally rotated 90 degrees, at which time, the valve core (19) connects the left section pipe (20) and the right section pipe (21); S22, controlling the piston rod of the locking electric cylinder (34) of the first atomizing assembly (16) 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, and 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, controlling the first electromagnetic valve (39) to open, and then controlling 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 filling 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 leftward 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 following operation steps: S241, the controller controls the electric ball valve (18) of the first atomization 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 atomization assembly (16) to extend downward, and the piston rod drives the plug block (35) to move downward, and the plug block (35) is inserted into the slot of the annular block (32) of the first atomization assembly (16), so as to lock the atomization pipe (8) of the first atomization 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 pipe (20) and the right section 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 released from the slot (33) of the annular block (32) of the atomizing tube (8), the spring (31) pushes the disk (9) and the hemispherical shell (10) of the atomizing head to move rightward under the elastic restoring force of the spring (31). The disk (9) and the hemispherical shell (10) of the atomizing head sequentially pass through the left section tube (20) and the flow passage 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 solenoid valve (39) to close, and control the second solenoid valve (40) to open, so that the bactericidal corrosion inhibitor passes through the water pump (12), the elbow (14), the second solenoid valve (40), the second hose (42), the atomizing tube (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 is sprayed out from each atomizing hole. During the spraying process, the liquid bactericidal corrosion inhibitor is converted into a mist-like bactericidal corrosion inhibitor, thereby realizing the filling of the mist-like bactericidal corrosion inhibitor into the collecting and transporting pipeline (4), thereby filling the mist-like bactericidal corrosion inhibitor into the collecting and transporting pipeline (4) through the second atomizing assembly (17), and finally continuously filling the mist-like bactericidal corrosion inhibitor into the collecting and transporting pipeline (4); S3, replacing the clogged atomizer head of the first atomizer assembly (16), the specific operation steps are as follows: 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 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 drive motor (37) is controlled to be turned off, 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 rotates a new atomizer head into 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: the driving motor (37) of the first atomizer assembly (16) is controlled to start, the driving 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 surface of the movable cylinder (24) abuts against the electric ball valve (18) of the first atomizer assembly (16), the driving motor (37) is controlled to be closed, so that the new atomizer head (43) enters the waiting position.

Images