Acoustic coded pig

Abstract

This utility model relates to the field of pipeline cleaning technology, specifically disclosing an acoustically coded pipeline cleaning pig, including a cylindrical body with a horn fixedly installed inside, mounted on the output end of a solenoid valve. This utility model utilizes airflow driven by air pressure to enter through the opened solenoid valve and drive the horn to emit a preset audio signal. This audio signal facilitates precise positioning by external acoustic equipment and allows for direct location identification by human ear, significantly improving operational safety. Simultaneously, after the pig enters the station, the airflow channel continuously and rapidly releases residual pressure at the tail end, effectively preventing equipment or personnel injury caused by the instantaneous release of high-pressure gas. It integrates positioning, coded positioning, and pressure relief safety into one device.

Description

Technical Field

[0001] This utility model relates to the field of pipeline cleaning technology, specifically to an acoustically coded pipeline cleaning device. Background Technology

[0002] Because of the complex internal environment of pipelines, when a pipeline pig is pushed and moved by the medium pressure, it moves inside the pipeline and scrapes and removes dirt from the pipe walls along the way. However, there are occasional instances where the pig gets stuck in the pipeline due to obstruction, or when it arrives at the station (after cleaning), it is easily "burst out" due to residual pressure and can cause injury. Therefore, the positioning of the pipeline pig is very important. Firstly, it facilitates the removal of the pig if it gets stuck in the pipeline, and secondly, it is necessary to calculate the distance and control the position of the pig after entering the station to prevent injury from residual pressure "bursting out" during removal.

[0003] Referring to Chinese patent, publication number CN106092082A, publication date: 2016-11-09, a method for positioning a pipeline pig is disclosed.

[0004] For example, Chinese patent, publication number CN111062286A, publication date: 2020-04-24, discloses a method for tracking and locating a pipeline pig.

[0005] In the prior art, including the aforementioned patent, electromagnetic and electrical signals are used to locate the pipeline pig. However, the biggest problem is that pipelines need to be resistant to high pressure and corrosion, so the pipeline itself has a certain electromagnetic shielding effect. In other words, in the actual execution of the above-mentioned method, the electromagnetic shielding emitted will be weakened or even directly blocked, so that external sensing devices cannot obtain signals to determine the location of the pipeline pig. Utility Model Content

[0006] The purpose of this invention is to provide an acoustically coded pigging device to solve the above-mentioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an acoustic coding pig, comprising a cylinder, inside which a horn is fixedly installed on the output end of a solenoid valve.

[0008] Preferably, the system also includes a sound source amplifier, which has a horn-shaped cross-section and is divided into a wide port and a narrow port according to the size of the structural port. The narrow port is plugged into and connected to the output end of the horn.

[0009] Preferably, one end of the cylinder is the forward end and the other end is the tail end;

[0010] A flow guide is fixedly installed at the port of the forward end, and the wide opening contacts the inner wall of the flow guide.

[0011] The air guide cover has multiple vent holes arranged in a circular array, and the maximum radius of the circle formed by the multiple vent holes is smaller than the circumference of the wide opening.

[0012] Preferably, an air inlet pipe is fixedly installed on the outer wall of the cylinder, and a flexible hose is fixedly connected between the input end of the solenoid valve and the air inlet pipe.

[0013] Preferably, it also includes a battery compartment inserted through the tail port, wherein a rechargeable battery is installed in the battery compartment;

[0014] The tail end port is threaded with an end face extending into the battery compartment port to secure the bottom cover for the rechargeable battery.

[0015] Preferably, the bottom cover has a bore hole facing the rechargeable battery, and a circuit board fixedly installed in the bore hole by screws.

[0016] Preferably, a fixing part is welded to the outer wall of the tail end, a connecting rod is rotatably mounted on the fixing part, an odometer wheel is rotatably mounted at the end of the connecting rod, and a tension spring is fixedly installed between the connecting rod and the fixing part.

[0017] Preferably, the outer wall of the cylinder is fixedly installed with mounting portions distributed adjacent to the forward end and the tail end, and the tail end is inserted with a first leather cup on the side wall of the mounting portion.

[0018] Preferably, the forward end is inserted with a second cup that abuts against the side wall of the mounting part.

[0019] Preferably, there are two second leather cups, and a gasket is provided between them.

[0020] In the above technical solution, the acoustic coding pig provided by this utility model has the following beneficial effects: When the pig is pushed and moved by air pressure by opening the solenoid valve, airflow enters through the air inlet of the solenoid valve and flows out through the horn. Thus, during the cleaning process, the solenoid valve's air intake is controlled to cause the horn to emit audio, achieving a coded sound effect. This makes it easier for external sound detection equipment to capture the signal and obtain positioning information.

[0021] Secondly, the sound is emitted through a loudspeaker, and its audio can be received by the human ear. Although the encoded information cannot be obtained, the human ear can distinguish this special audio, which greatly increases the safety of the operation.

[0022] Furthermore, once the pig enters the station, the airflow enters through the air inlet of the solenoid valve and flows out through the horn, which can more quickly dissipate the air pressure at the tail end of the pig by dissipating it through the horn, thus avoiding the situation where residual pressure "bursts out" and injures people. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0025] Figure 2 A cross-sectional structural schematic diagram provided for an embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram of the bottom structure of the bottom cover provided in an embodiment of the present utility model;

[0027] Figure 4 A schematic diagram of the connection structure of the sound source amplifier, horn and solenoid valve provided for an embodiment of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Cylinder body; 11. Air inlet pipe; 12. Battery compartment; 13. Rechargeable battery; 14. Bottom cover; 2. Sound source amplifier; 3. Horn; 4. Solenoid valve; 5. Circuit board; 7. Tension spring; 8. Mounting part; 9. Fixing part; 91. Connecting rod; 10. Mileage wheel; 100. First diaphragm cup; 101. Second diaphragm cup; 102. Washer ring; 200. Draft shield. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-4 As shown, an acoustically coded pig includes: Example

[0032] The specific structure of the pig provided in this embodiment includes: a cylinder 1, a first cup 100, a second cup 101, and a gasket 102. Combined with... Figure 2As shown, based on the direction in which the pig moves under air pressure within the pipeline, one end of the cylinder 1 is the forward end and the other end is the tail end. The outer wall of the cylinder 1 is fixedly equipped with mounting parts 8 distributed adjacent to the forward and tail ends. The tail end is inserted into a first cup 100 on the side wall of the mounting part 8, and then bolts are passed through pre-drilled holes in the mounting part 8 and the first cup 100, and finally secured with nuts.

[0033] Secondly, a second cup 101 is inserted into the side wall of the mounting part 8 at the forward end. There are two cups 101, and a washer 102 is provided between them. A flow guide 200 is fixedly installed at the port of the forward end, and then bolts are passed through pre-drilled holes in the mounting part 8, the flow guide 200, the washer 102, and the second cup 101, and then fixed with nuts.

[0034] It should be noted that the first cup 100 and the second cup 101 mentioned above will deform when the pig is inserted into the pipeline because the radius of the cup is larger than the radius of the pipeline.

[0035] Example 2:

[0036] Based on Embodiment 1, this example aims to provide a sound-generating device, combined with Figure 2 and Figure 3 As shown, a horn 3 (similar to a whistle, producing sound through airflow) is fixedly installed inside the cylinder 1 and mounted on the output end of the solenoid valve 4. An air inlet pipe 11 is fixedly installed on the outer wall of the cylinder 1. The solenoid valve 4 extends out from the notch on the cylinder 1, and a flexible hose is fixedly connected between the input end of the solenoid valve 4 and the air inlet pipe 11.

[0037] Furthermore, a sound source amplifier 2 is arranged inside the aforementioned cylindrical body 1. Its cross-section is horn-shaped, and it is divided into a wide opening and a narrow opening according to the size of the structural port. The narrow opening is plugged into and connected to the output end of the horn 3. The wide opening is in contact with the inner wall of the flow guide 200, and the flow guide 200 has multiple vent holes arranged in a circumferential array. The maximum radius of the circumference formed by the multiple vent holes is smaller than the circumference radius of the wide opening.

[0038] Specifically, in the above embodiment, the solenoid valve 4 is opened, so that when the pig is pushed and moved by air pressure, airflow enters through the air inlet of the solenoid valve 4 and flows out through the horn 3. This allows the horn 3 to emit an encoded sound, such as Morse code (010010001....), through the control of the air intake of the solenoid valve 4 during the cleaning process. This makes it easier for the external sound detection equipment to capture the sound and obtain location information.

[0039] Secondly, the sound is emitted by speaker 3, and its audio can be received by the human ear. Although the encoded information cannot be obtained, the human ear can distinguish this special audio, that is, it can be distinguished by the human ear, which greatly increases the safety of the operation (the location of the pig in the pipeline can only be roughly judged by the sound), thus greatly increasing the safety of the operation.

[0040] Furthermore, after the pig enters the station, the airflow will enter through the air inlet of the solenoid valve 4 and flow out through the horn 3, which can more quickly dissipate the air pressure at the tail end of the pig by flowing out through the horn 3, thus avoiding the situation where residual pressure "bursts out" and injures people.

[0041] Example 3:

[0042] Based on Embodiment 2, a power supply device for the solenoid valve 4 is also provided, combined with... Figure 2 and Figure 4 As shown, the battery compartment 12 is inserted into the tail end port of the cylinder 1, and a rechargeable battery 13 is installed inside the battery compartment 12.

[0043] The tail end port is threaded with a bottom cover 14 that extends into the battery compartment 12 port to secure the rechargeable battery 13.

[0044] Secondly, the bottom cover 14 has a bore hole on the side facing the rechargeable battery 13, and a circuit board 5 fixedly installed in the bore hole by screws.

[0045] Specifically, the battery compartment 12 is integrally injection molded or cast with the cylinder 1, or it can be threaded on. The circuit board 5 is powered by the rechargeable battery 13, and the control line of the solenoid valve 4 is connected to the circuit board 5. The solenoid valve 4 can be opened and closed by remote control or button control using the circuit board 5.

[0046] The aforementioned rechargeable battery 13 uses a USB interface to be directly connected to 220V AC power for power replenishment via a compatible charger.

[0047] Example 4:

[0048] Based on Embodiment 3, this embodiment provides an encoding device. A fixing part 9 is welded to the outer wall of the tail end, and a connecting rod 91 is rotatably mounted on the fixing part 9. One end of the odometer wheel 10 is installed in a rotating bearing on the connecting rod 91, while the other end is fixedly installed on the output end of the odometer sensor (the odometer sensor is fixedly installed on the connecting rod 91). A tension spring 7 is fixedly installed between the connecting rod 91 and the fixing part 9. The tension spring 7 allows the connecting rod 91 to deflect outwards towards the outside of the cylinder 1, ensuring that the odometer wheel 10 always contacts the inner wall of the pipeline. When the pig is pushed and moved by air pressure, the odometer wheel 10 rotates under the friction of the inner wall of the pipeline. When the mileage wheel 10 rotates, the output of the mileage sensor rotates synchronously, thereby transmitting an electrical signal to the circuit board. The circuit board processes the electrical signal and converts it into an audio signal command set according to the predetermined mileage to activate the opening size of the solenoid valve 4. This causes the speaker 3 to emit a corresponding audio due to the change in airflow, thus achieving programming. The audio is in Morse code, 010010001...., which is captured by an external sound detection device and the encoded data is parsed.

[0049] The aforementioned encoding device may also include pressure sensors, temperature sensors, flow rate sensors, and other sensors involved in the pipeline. A signal command to control the opening size of the solenoid valve 4 can be used in a similar encoding manner, so that the horn 3 emits a corresponding audio signal due to the change in air flow.

[0050] It should be noted that the aforementioned electronic components and electronic control programs are all common technical knowledge to those skilled in the art, and therefore will not be described in detail. Furthermore, the audio for the predetermined mileage setting and the corresponding signal commands for the opening size of solenoid valve 4 are from a database established after testing, and will not be mentioned excessively in this application.

[0051] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An acoustically coded pig, characterized in that, Includes a cylinder (1), inside which a horn (3) is fixedly installed on the output end of the solenoid valve (4); It also includes a sound source amplifier (2), which has a horn-shaped cross-section and is divided into a wide port and a narrow port according to the size of the structural port. The narrow port is plugged into and connected to the output end of the horn (3). One end of the cylinder (1) is the forward end and the other end is the tail end; A flow guide (200) is fixedly installed at the port of the forward end, and the wide opening contacts the inner wall of the flow guide (200); The air guide (200) has a plurality of vent holes arranged in a circular array, and the maximum radius of the circle formed by the plurality of vent holes is smaller than the circumference radius of the wide opening. A fixing part (9) is welded to the outer wall of the tail end. A connecting rod (91) is rotatably mounted on the fixing part (9). A mileage wheel (10) is rotatably mounted at the end of the connecting rod (91). A tension spring (7) is fixedly installed between the connecting rod (91) and the fixing part (9).

2. The acoustic coding pig according to claim 1, characterized in that, An air inlet pipe (11) is fixedly installed on the outer wall of the cylinder (1), and a flexible hose is fixedly connected between the input end of the solenoid valve (4) and the air inlet pipe (11).

3. The acoustic coding pig according to claim 1, characterized in that, It also includes a battery compartment (12) inserted through the tail port, wherein a rechargeable battery (13) is installed in the battery compartment (12). The tail end port is threaded with a bottom cover (14) for securing the rechargeable battery (13) by extending the end face into the port of the battery compartment (12).

4. The acoustic coding pig according to claim 3, characterized in that, The bottom cover (14) has a bore hole on the side facing the rechargeable battery (13), and a circuit board (5) fixed by screws is fixedly installed in the bore hole.

5. An acoustically coded pig according to claim 1, characterized in that, The outer wall of the cylinder (1) is fixedly installed with mounting parts (8) distributed adjacent to the front end and the rear end, and the rear end is inserted with a first leather cup (100) whose side wall abuts against the side wall of the mounting part (8).

6. An acoustically coded pig according to claim 5, characterized in that, The forward end is inserted with a second leather cup (101) that abuts against the side wall of the mounting part (8).

7. An acoustically coded pig according to claim 6, characterized in that, There are two second leather cups (101), and a gasket (102) is provided between them.

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