Detection device for pressure pipeline

Abstract

The utility model discloses a detection device for a pressure pipeline, which relates to the technical field of pressure pipeline detection and comprises a first box body and a second box body, two fixing rods are fixedly arranged between the first box body and the second box body, first bevel gears are rotationally arranged in the first box body and the second box body, and the first bevel gears are meshed with the second bevel gears. A driving shaft is fixedly connected between the two first bevel gears, the two ends of the driving shaft movably penetrate through the faces, close to each other, of the first box body and the second box body correspondingly, and adjusting assemblies are arranged on the first box body and the second box body correspondingly. According to the utility model, the diameter of the to-be-detected pressure pipeline is catered by installing the adjusting assembly and adjusting the diameter of the circle enclosed by the four pulleys, and the four pulleys are all movably attached to the inner wall of the to-be-detected pressure pipeline, so that the device can be adapted to pressure pipelines of various models, and the detection precision is improved. And stable displacement of the device in the pressure pipeline can be ensured, and the phenomena of deviation and jolt of the device are avoided.

Description

Technical Field

[0001] This utility model relates to the field of pressure pipeline testing technology, and in particular to a testing device for pressure pipelines. Background Technology

[0002] Pressure pipelines refer to all pipelines subjected to internal and external pressure. In actual use, pressure pipelines typically transport gaseous, liquefied gaseous, or steam media, or flammable, explosive, toxic, or corrosive liquid media with a pressure greater than or equal to 0.1 MPa (gauge pressure). Therefore, the production requirements for these pipelines are relatively high.

[0003] The existing patent publication number CN220019402U, entitled "A Detection Device for the Inside of a Pressure Pipeline," proposes a device that uses front and rear searchlights designed on the front and rear sides of the device body. This invention, through the use of a first camera and a second camera designed on the top and bottom of the device body, allows for comprehensive imaging of the inside of the pressure pipeline without blind spots during actual use, facilitating observation by personnel.

[0004] However, when the detection device disclosed in publication number CN220019402U is used to detect pressure pipelines of different inner diameters, the detection device is not easy to maintain stable displacement inside the pressure pipeline. Therefore, it is necessary to propose a detection device for pressure pipelines to solve the above problem. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for pressure pipelines, in order to solve the problem mentioned above that when existing testing devices for pressure pipelines are used to test pressure pipelines of different inner diameters, the testing device is not easy to move stably inside the pressure pipeline.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a detection device for pressure pipelines, comprising a first housing and a second housing, wherein two fixed rods are fixedly arranged between the first housing and the second housing, and a first bevel gear is rotatably arranged inside both the first housing and the second housing, and a drive shaft is fixedly connected between the two first bevel gears, wherein the two ends of the drive shaft respectively move through the side of the first housing and the second housing that are close to each other, and an adjustment component is provided on both the first housing and the second housing;

[0007] The adjustment assembly includes a second bevel gear and a mounting plate. The mounting plate is fixedly installed inside the first housing. The second bevel gear meshes with the outer ring of the first bevel gear. Four bevel gears and four mounting plates are evenly distributed in a ring around the center line of the first housing. A lead screw is fixedly installed at the end of the second bevel gear away from the first bevel gear. The lead screw is rotatably connected to the mounting plate through a bearing. A movable rod is threadedly connected to the outer ring of the lead screw. A sleeve rod is movably sleeved on the outer ring of the movable rod. The sleeve rod is fixedly connected to the first housing and extends outside the first housing. A limit strip is fixedly installed on the outer ring of the movable rod. A sliding groove adapted to the limit strip is fixedly installed on the inner ring of the sleeve rod. A pulley is rotatably installed at the end of the movable rod away from the mounting plate.

[0008] The second housing is equipped with a cleaning component, and a detection component is located between the two fixing rods.

[0009] Preferably, the cleaning component includes a support frame, which is fixedly disposed on the side of the second housing away from the first housing. A second motor is fixedly disposed in the middle of the support frame, and the shaft of the second motor moves through both sides of the support frame. Several fan blades are fixedly disposed in a ring-shaped even distribution on its outer ring.

[0010] Preferably, the detection assembly includes a control box, which is fixedly installed between two fixed rods. The drive shaft and the control box are rotatably connected, and probes are fixedly installed on all four outer walls of the control box.

[0011] Preferably, a limiting shaft is movably sleeved on the inner ring of the pulley, and support plates are fixedly connected to both ends of the limiting shaft. A connecting plate is fixedly installed between the two support plates, and a pressure sensor is installed between the connecting plate and the movable rod.

[0012] Preferably, the control box is also equipped with a battery pack, an information receiving module, an information processing module and a wireless transmitting module, and the probe is a wireless ultrasonic detection probe.

[0013] Preferably, a first motor is fixedly installed on the side of the first housing away from the second housing, and the rotating shaft of the first motor extends movably into the first housing and is fixedly connected to the drive shaft.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. By adjusting the installation of the components and adjusting the diameter of the circle formed by the four pulleys, the device can be adapted to match the diameter of the pressure pipe to be tested. This allows all four pulleys to move and fit against the inner wall of the pressure pipe. In this way, the device can be adapted to various types of pressure pipes and ensures stable displacement of the device inside the pressure pipe without any device shifting or shaking. This solves the problem that existing pressure pipe testing devices are not easy to move stably inside pressure pipes of different inner diameters.

[0016] 2. By installing a pressure sensor, the pressure value between the pulley and the inner wall of the pipe is detected, so as to avoid excessive friction between the pulley and the inner wall of the pressure pipe, which would hinder the displacement of the pulley;

[0017] 3. By installing the cleaning component, the second motor is started, which drives the fan blades to rotate. The airflow blows away dust and debris from the inner wall of the pipe, improving the cleanliness of the inner wall and thus enhancing the detection accuracy of the probe. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a detection device for pressure pipelines according to the present invention.

[0019] Figure 2 This is a schematic cross-sectional view of the adjustment component of this utility model.

[0020] Figure 3 This is a schematic diagram of the cleaning component structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the first and second boxes of this utility model.

[0022] In the diagram: 1. First housing; 2. Second housing; 3. Fixed rod; 4. First motor; 5. Drive shaft; 6. First bevel gear; 7. Second bevel gear; 8. Mounting plate; 9. Lead screw; 10. Sleeve rod; 11. Movable rod; 12. Limiting strip; 13. Pulley; 14. Support frame; 15. Second motor; 16. Fan blade; 17. Control box; 18. Probe; 19. Connecting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figures 1-4The device shown is for testing pressure pipelines and includes a first housing 1 and a second housing 2. Two fixed rods 3 are fixedly arranged between the first housing 1 and the second housing 2. A first bevel gear 6 is rotatably arranged inside both the first housing 1 and the second housing 2. A drive shaft 5 is fixedly connected between the two first bevel gears 6. The two ends of the drive shaft 5 respectively move through the side of the first housing 1 and the second housing 2 that are close to each other. An adjustment component is provided on both the first housing 1 and the second housing 2.

[0025] The adjustment assembly includes a second bevel gear 7 and a mounting plate 8. The mounting plate 8 is fixedly installed inside the first housing 1. The second bevel gear 7 is meshed with the outer ring of the first bevel gear 6. Four second bevel gears 7 and four mounting plates 8 are evenly distributed in a ring around the center line of the first housing 1. A lead screw 9 is fixedly installed at the end of the second bevel gear 7 away from the first bevel gear 6. The lead screw 9 is rotatably connected to the mounting plate 8 through a bearing. A movable rod 11 is threadedly connected to the outer ring of the lead screw 9. A sleeve rod 10 is movably sleeved on the outer ring of the movable rod 11. The sleeve rod 10 is fixedly connected to the first housing 1 and extends out of the first housing 1. A limit strip 12 is fixedly installed on the outer ring of the movable rod 11. A sliding groove adapted to the limit strip 12 is fixedly installed on the inner ring of the sleeve rod 10. A pulley 13 is rotatably installed at the end of the movable rod 11 away from the mounting plate 8.

[0026] Specifically, when the device inspects pressure pipes of different inner diameters, rotating one of the first bevel gears 6 drives another first bevel gear 6 to rotate synchronously via the drive shaft 5. This, in turn, drives multiple second bevel gears 7 on the first housing 1 and the second housing 2 to rotate synchronously. With the assistance of the limiting strip 12, the movable rod 11 is displaced within the sleeve rod 10, thereby adjusting the extension distance of the pulley 13. This, in turn, adjusts the diameter of the circle formed by the four pulleys 13 to match the diameter of the pressure pipe to be inspected, ensuring that all four pulleys 13 move in close contact with the inner wall of the pressure pipe. In this way, the device can adapt to various types of pressure pipes and ensures stable displacement of the device inside the pressure pipe without any device offset or vibration. This solves the problem that existing pressure pipe inspection devices are inconvenient to maintain stable displacement inside pressure pipes of different inner diameters.

[0027] To ensure that the friction between the pulley 13 and the inner wall of the pressure pipe is within a reasonable range, a limiting shaft is movably fitted on the inner ring of the pulley 13. Support plates are fixedly connected to both ends of the limiting shaft, and a connecting plate 19 is fixedly installed between the two support plates. A pressure sensor is installed between the connecting plate 19 and the movable rod 11. By installing the pressure sensor, the pressure value between the pulley 13 and the inner wall of the pipe is detected, so as to avoid excessive friction between the pulley 13 and the inner wall of the pressure pipe, which would hinder the displacement of the pulley 13.

[0028] In order to precisely control the rotation of the first bevel gear 6, a first motor 4 is fixedly installed on the side of the first housing 1 away from the second housing 2. The shaft of the first motor 4 extends into the first housing 1 and is fixedly connected to the drive shaft 5. After the first motor 4 is started, it drives the drive shaft 5 to rotate, thereby driving the two first bevel gears 6 on the drive shaft 5 to rotate synchronously, thus improving the mechanical automation level of the device.

[0029] Furthermore, a detection component is installed between the two fixed rods 3. The detection component detects whether cracks or other defects appear on the inner wall of the pressure pipeline. The detection component includes a control box 17, which is fixedly installed between the two fixed rods 3. The drive shaft 5 is rotatably connected to the control box 17. Probes 18 are fixedly installed on the outer walls of the control box 17. The probes 18 are wireless ultrasonic detection probes. The probes 18 emit ultrasonic waves. When the ultrasonic waves encounter defects or cracks, they return to the probes 18, thereby detecting whether there are defects on the inner wall of the pressure pipeline, so as to reduce the probability of bursting when the pressure pipeline is in operation.

[0030] Because ultrasonic testing requires a high degree of cleanliness of the pipe's inner wall, a cleaning component is installed on the second housing 2. When the device moves forward inside the pipe, the second housing 2 is in front, and the cleaning component cleans the impurities inside the pipe. The cleaning component includes a support frame 14, which is fixedly installed on the side of the second housing 2 away from the first housing 1. A second motor 15 is fixedly installed in the middle of the support frame 14. The shaft of the second motor 15 moves through both sides of the support frame 14, and several fan blades 16 are fixedly installed in a ring-shaped even distribution on its outer ring. When the second motor 15 is started, it drives the fan blades 16 to rotate, and the dust and debris inside the pipe are blown away by the airflow, which is simple and efficient.

[0031] Furthermore, the control box 17 is also equipped with a battery pack, an information receiving module, an information processing module, and a wireless transmission module. The installation of the battery pack makes it suitable for use in situations where wiring is inconvenient. The probe 18 sends the collected data to the information receiving module, and after passing through the information processing module, it is sent to the external control center through the wireless transmission module, enabling remote control and improving the intelligence of the device.

Claims

1. A testing device for pressure pipelines, comprising a first housing (1) and a second housing (2), characterized in that: Two fixed rods (3) are fixedly arranged between the first box (1) and the second box (2). A first bevel gear (6) is rotatably arranged inside both the first box (1) and the second box (2). A drive shaft (5) is fixedly connected between the two first bevel gears (6). The two ends of the drive shaft (5) respectively move through the side of the first box (1) and the second box (2) that are close to each other. An adjustment component is provided on both the first box (1) and the second box (2). The adjusting assembly includes a second bevel gear (7) and a mounting plate (8). The mounting plate (8) is fixedly installed inside the first housing (1). The second bevel gear (7) meshes with the outer ring of the first bevel gear (6). Four bevel gears (7) and mounting plates (8) are evenly distributed in a ring around the center line of the first housing (1). A lead screw (9) is fixedly installed at the end of the second bevel gear (7) away from the first bevel gear (6). The lead screw (9) rotates through a bearing and the mounting plate (8). The screw (9) is threaded with a movable rod (11) on its outer ring. A sleeve rod (10) is movably sleeved on the outer ring of the movable rod (11). The sleeve rod (10) is fixedly connected to the first housing (1) and extends out of the first housing (1). A limit strip (12) is fixedly provided on the outer ring of the movable rod (11). A sliding groove that matches the limit strip (12) is fixedly provided on the inner ring of the sleeve rod (10). A pulley (13) is rotatably provided on the end of the movable rod (11) away from the mounting plate (8). The second housing (2) is equipped with a cleaning component, and a detection component is provided between the two fixing rods (3).

2. The detection device for pressure pipelines according to claim 1, characterized in that: The cleaning component includes a support frame (14), which is fixedly disposed on the side of the second housing (2) away from the first housing (1). A second motor (15) is fixedly disposed in the middle of the support frame (14). The shaft of the second motor (15) moves through the two sides of the support frame (14) and a number of fan blades (16) are fixedly disposed in a ring at its outer ring.

3. The detection device for pressure pipelines according to claim 1, characterized in that: The detection assembly includes a control box (17), which is fixedly installed between two fixed rods (3). The drive shaft (5) and the control box (17) are rotatably connected. Probes (18) are fixedly installed on the outer walls of the control box (17).

4. The detection device for pressure pipelines according to claim 1, characterized in that: A limiting shaft is movably sleeved on the inner ring of the pulley (13). Support plates are fixedly connected to both ends of the limiting shaft. A connecting plate (19) is fixedly installed between the two support plates. A pressure sensor is installed between the connecting plate (19) and the movable rod (11).

5. A testing device for pressure pipelines according to claim 3, characterized in that: The control box (17) is also equipped with a battery pack, an information receiving module, an information processing module and a wireless transmitting module, and the probe (18) is a wireless ultrasonic detection probe.

6. The detection device for pressure pipelines according to claim 1, characterized in that: A first motor (4) is fixedly installed on the side of the first housing (1) away from the second housing (2). The rotating shaft of the first motor (4) extends into the first housing (1) and is fixedly connected to the drive shaft (5).

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