Telescoping conduit system and drain vehicle

Abstract

The present application relates to a kind of telescopic pipeline systems and drain car, wherein, telescopic pipeline system includes telescopic pipeline (11), inflation seal ring (9), detection device and control device, telescopic pipeline (11) includes coaxial outer tube (112) and inner tube (111), inner tube (111) is arranged in the inside of outer tube (112), and in the axial direction of telescopic pipeline (11), inner tube (111) and outer tube (112) can be slid relative to adjust the length of telescopic pipeline (11);Inflation seal ring (9) is configured to seal telescopic pipeline (11);Detection device is configured to detect the operating parameter of telescopic pipeline system;Control device is signal connected with detection device, and control device is configured to adjust the inflation state of inflation seal ring (9) according to the detection result of detection device.Drain car includes the telescopic pipeline system described above.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, and in particular to a telescopic pipe system and a drainage vehicle. BACKGROUND

[0002] In the rescue work after the occurrence of flood disasters, in order to improve the drainage height, the drainage vehicle uses a large-diameter telescopic pipe to realize large-flow drainage operation, and in order to facilitate transportation, the telescopic pipe is usually arranged to be relatively slidable.

[0003] Since the surface quality and precision of the large-diameter telescopic pipe cannot be very high, water leakage and other phenomena are prone to occur. In particular, when pumping and draining silt-containing sewage, silt is easy to deposit in the interlayer between the two pipes, thereby causing problems such as difficulty in pipe contraction, damage to the inner and outer surfaces of the pipe, and damage to the sealing structure arranged in the pipe, which is difficult to observe after damage and is prone to cause safety hazards. Therefore, the above-mentioned situations can only be avoided by regularly replacing the pipe assembly and the sealing structure, but this will also cause the problem of high use cost.

[0004] It should be noted that the information disclosed in the background section of the present application is only intended to increase the understanding of the overall background of the present application and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. SUMMARY

[0005] The present application provides a telescopic pipe system and a drainage vehicle, which can adapt to the operation requirements of different construction environments and improve the sealing reliability of the telescopic pipe.

[0006] According to one aspect of the present application, a telescopic pipe system is provided, comprising:

[0007] The telescopic pipe comprises a coaxial outer pipe and an inner pipe, the inner pipe is arranged inside the outer pipe, and in the axial direction of the telescopic pipe, the inner pipe and the outer pipe are relatively slidable to adjust the length of the telescopic pipe;

[0008] The inflation sealing ring is configured to seal the telescopic pipe;

[0009] The detection device is configured to detect the operating parameters of the telescopic pipe system; and

[0010] The control device is in signal connection with the detection device, and the control device is configured to adjust the inflation state of the inflation sealing ring according to the detection result of the detection device.

[0011] In some embodiments, the inflation sealing ring is at least partially arranged in the gap between the inner wall of the outer pipe and the outer wall of the inner pipe, so as to seal the telescopic pipe by inflating the inflation sealing ring.

[0012] In some embodiments, the second end of the inner tube is located in the inner cavity of the outer tube, and the first end of the inner tube is located axially outside the outer tube and away from the second end of the outer tube.

[0013] The telescopic conduit also includes a first guide sleeve fixedly connected to a first end of the outer tube. The first guide sleeve is at least partially disposed within the gap between the inner wall of the outer tube and the outer wall of the inner tube, and the first guide sleeve is slidable relative to the outer wall of the inner tube; and / or

[0014] The telescopic pipeline also includes a second guide sleeve fixedly connected to the second end of the inner tube. The second guide sleeve is at least partially disposed in the gap between the inner wall of the outer tube and the outer wall of the inner tube, and the second guide sleeve can slide relative to the inner wall of the outer tube.

[0015] In some embodiments, an inflatable sealing ring is disposed between the inner wall of the outer tube and the second guide sleeve.

[0016] In some embodiments, the second guide sleeve includes a body and a flange;

[0017] The main body is located in the gap between the inner wall of the outer tube and the outer wall of the inner tube, and is fixedly connected to the inner tube.

[0018] The flange is connected to the side of the body away from the first end of the inner tube, and at least partially protrudes from the gap between the inner wall of the outer tube and the outer wall of the inner tube.

[0019] The outer periphery of the flange is provided with a groove with the opening facing the inner wall of the outer tube. The inflatable sealing ring is set in the groove, and the expansion surface of the inflatable sealing ring faces the inner wall of the outer tube.

[0020] In some embodiments, the operating parameters of the telescopic pipeline system include the water pressure value P1 in the telescopic pipeline and the air pressure value P2 in the air-filled sealing ring.

[0021] The control device is configured to operate when the water pressure value P1 is greater than or equal to a first preset value P. 01 Inflate the sealing ring until the air pressure value P2 is greater than or equal to the second preset value P. 02 To seal the expansion joint; and / or

[0022] The control device is configured to operate when the water pressure value P1 is less than a first preset value P. 01 The air seal ring is deflated to release the air and release the seal on the telescopic pipe.

[0023] In some embodiments, the telescopic piping system further includes an air supply device configured to inflate the air seal to cause the air seal to expand.

[0024] In some embodiments, the gas supply device includes a gas source and a gas delivery pipeline, wherein the gas source is used to provide high-pressure gas and the gas delivery pipeline is used to deliver the high-pressure gas to the inflatable sealing ring.

[0025] In some embodiments, the control device comprises a control valve arranged on the gas supply pipeline;

[0026] The control valve is configured to, when the water pressure value P1 is greater than or equal to a first preset value P 01 , connect the gas source with the inside of the inflatable sealing ring, so that the gas supply device supplies gas to the inflatable sealing ring; and / or

[0027] The control valve is configured to, when the gas pressure value P2 is greater than or equal to a second preset value P 02 , disconnect the gas source from the inflatable sealing ring, so that the inflatable sealing ring is pressure-maintained; and / or

[0028] The control valve is configured to, when the water pressure value P1 is less than the first preset value P 01 , disconnect the gas source from the inflatable sealing ring and connect the inside of the inflatable sealing ring with the outside, so that the inflatable sealing ring is deflated.

[0029] In some embodiments, the control device further comprises a pressure regulating valve arranged between the gas source and the control valve.

[0030] In some embodiments, the control valve comprises a first working position, a second working position and a third working position;

[0031] The control valve is configured to, when in the first working position, connect the gas source with the inside of the inflatable sealing ring; and / or

[0032] The control valve is configured to, when in the second working position, disconnect the gas source from the inflatable sealing ring; and / or

[0033] The control valve is configured to, when in the third working position, disconnect the gas source from the inflatable sealing ring and connect the inside of the inflatable sealing ring with the outside.

[0034] In some embodiments, the control device further comprises a controller;

[0035] The controller is configured to, when the water pressure value P1 is greater than or equal to a first preset value P 01 , switch the control valve to the first working position; and / or

[0036] The controller is configured to, when the gas pressure value P2 is greater than or equal to a second preset value P 02 , switch the control valve to the second working position; and / or

[0037] The controller is configured to, when the water pressure value P1 is less than the first preset value P 01 , switch the control valve to the third working position.

[0038] In some embodiments, the telescopic pipeline system further comprises a display, and the display is in signal connection with the control device to display the content inputted by the control device.

[0039] In some embodiments, the operating parameter of the telescopic pipeline system comprises a water pressure value P1 in the telescopic pipeline and an air pressure value P2 in the inflatable sealing ring; the detection device comprises a first sensor for detecting the water pressure value P1 and a second sensor for detecting the air pressure value P2.

[0040] In some embodiments, the control device is configured to output a first prompt signal to the display when the change of the air pressure value P2 within a preset time is greater than a first preset threshold value and less than a second preset threshold value; and / or

[0041] The control device is configured to output a second prompt signal to the display when the change of the air pressure value P2 within a preset time is greater than the second preset threshold value.

[0042] According to another aspect of the present application, a drainage vehicle is provided, comprising the telescopic pipeline system as described above.

[0043] Based on the above technical solution, by setting the inner tube and the outer tube which can slide relative to each other, the telescopic pipeline can be elongated or contracted through the relative sliding of the inner tube and the outer tube, so as to adapt to the operation requirements of different construction environments, and facilitate the replacement, disassembly, transportation or storage of the telescopic pipeline. By setting the detection device to detect the operating parameter of the telescopic pipeline system, and setting the control device to adjust the inflation state of the inflatable sealing ring according to the detection result of the detection device, the automatic pressure compensation of the inflatable sealing ring can be realized during the operation of the telescopic pipeline system, so as to ensure the reliability of the sealing during the drainage operation of the telescopic pipeline system. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0045] Figure 1 Fig. 1 shows a structural schematic diagram of one embodiment of the telescopic pipeline system of the present application;

[0046] Figure 2 Fig. 2 shows a partial enlarged view of the telescopic pipeline in one embodiment of the telescopic pipeline system of the present application;

[0047] Figure 3 Fig. 3 shows an electrical schematic diagram of one embodiment of the telescopic pipeline system of the present application;

[0048] Figure 4A schematic diagram of an air path structure of an embodiment of the telescopic pipeline system of the present application is shown.

[0049] Figure 5 A schematic diagram of the structure and the connection relationship of the components of an embodiment of the telescopic pipeline system of the present application is shown.

[0050] In the drawings:

[0051] 1, controller; 2, display; 3, first sensor; 4, second sensor; 5, power supply; 6, control valve; 7, air source; 8, ; 9, inflatable sealing ring; 10, air delivery pipeline; 11, telescopic pipeline; 111, inner tube; 112, outer tube; 113, first guide sleeve; 114, second guide sleeve; 114a, body; 114b, flange part. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0054] Reference Figure 1 As shown, in some embodiments of the telescopic pipeline system provided by the present application, the telescopic pipeline system comprises a telescopic pipeline 11, an inflatable sealing ring 9, a detection device, and a control device. The telescopic pipeline 11 comprises a coaxial outer tube 112 and an inner tube 111, the inner tube 111 is arranged inside the outer tube 112, and in the axial direction of the telescopic pipeline 11, the inner tube 111 and the outer tube 112 can slide relative to each other to adjust the length of the telescopic pipeline 11; the inflatable sealing ring 9 is configured to seal the telescopic pipeline 11; the detection device is configured to detect the operating parameters of the telescopic pipeline system; the control device is in signal connection with the detection device, and the control device is configured to adjust the inflation state of the inflatable sealing ring 9 according to the detection result of the detection device.

[0055] The telescopic pipe system can be used in the water pumping and draining construction operation of the engineering vehicle. In the above embodiment, by relatively sliding the inner pipe 111 and the outer pipe 112, the telescopic pipe 11 can be contracted to the shortest state by relatively sliding the inner pipe 111 and the outer pipe 112 in the non-working state of the engineering vehicle, so as to facilitate replacement, disassembly, transportation or storage and the like; and in the process of the water pumping and draining operation, the length adjustment of the telescopic pipe 11 can be realized by changing the relative position of the inner pipe 111 and the outer pipe 112, so as to adapt to the operation requirements of different construction environments.

[0056] In addition, the air pressure of the inflatable sealing ring 9 can be reduced in the use process, thereby causing the problem of poor sealing effect. By setting the detection device to detect the operation parameters (such as the air pressure in the inflatable sealing ring 9) of the telescopic pipe system, and setting the control device to adjust the inflation state of the inflatable sealing ring 9 according to the detection result of the detection device, the automatic pressure compensation of the inflatable sealing ring 9 can be realized in the working process of the telescopic pipe system, thereby ensuring the reliability of the sealing in the process of the water pumping and draining operation.

[0057] In some embodiments, the inflatable sealing ring 9 is at least partially arranged in the gap between the inner wall of the outer pipe 112 and the outer wall of the inner pipe 111, so as to seal the telescopic pipe 11 by inflating the inflatable sealing ring 9.

[0058] By at least partially arranging the inflatable sealing ring 9 in the gap between the inner wall of the outer pipe 112 and the outer wall of the inner pipe 111, the inflatable sealing ring 9 can be inflated to expand and block the gap, thereby achieving the sealing effect.

[0059] Reference Figure 1 As shown in the drawings, in some embodiments, the second end of the inner pipe 111 is located in the inner cavity of the outer pipe 112, and the first end of the inner pipe 111 is located on the axial outer side of the outer pipe 112 and away from the second end of the outer pipe 112; the telescopic pipe 11 further comprises a first guide sleeve 113 fixedly connected with the first end of the outer pipe 112, the first guide sleeve 113 is at least partially arranged in the gap between the inner wall of the outer pipe 112 and the outer wall of the inner pipe 111, and the first guide sleeve 113 can slide relative to the outer wall of the inner pipe 111; and / or the telescopic pipe 11 further comprises a second guide sleeve 114 fixedly connected with the second end of the inner pipe 111, the second guide sleeve 114 is at least partially arranged in the gap between the inner wall of the outer pipe 112 and the outer wall of the inner pipe 111, and the second guide sleeve 114 can slide relative to the inner wall of the outer pipe 112.

[0060] In the above embodiment, the inner pipe 111 and the outer pipe 112 are arranged in a nested manner, and the inner cavities of the inner pipe 111 and the outer pipe 112 together constitute the liquid conveying channel.

[0061] Reference Figure 1As shown in the direction indicated by the arrow in FIG. 1, the right end of the inner tube 111 and the outer tube 112 is the first end thereof, and the left end of the inner tube 111 and the outer tube 112 is the second end thereof. The inner tube 111 can slide in the inner cavity of the outer tube 112. When the telescopic pipe 11 is extended, the inner tube 111 as a whole moves rightward relative to the outer tube 112, and the first end of the inner tube 111 and the second end of the outer tube 112 are away from each other. When the telescopic pipe 11 is shortened, the inner tube 111 as a whole moves leftward relative to the outer tube 112, and the first end of the inner tube 111 and the second end of the outer tube 112 are close to each other.

[0062] In the above embodiment, the first guide sleeve 113 is fixedly connected to the right end (i.e., the first end) of the outer tube 112, and the second guide sleeve 114 is fixedly connected to the left end (i.e., the second end) of the inner tube 111. That is, by arranging the first guide sleeve 113 and the second guide sleeve 114, on the one hand, the inner tube 111 and the outer tube 112 can be separated to reduce the friction when the inner tube 111 and the outer tube 112 slide relative to each other, so that the telescopic pipe 11 can be smoothly extended and shortened. On the other hand, by taking the guide sleeve as an intermediate part participating in the sliding, the wear of the outer wall of the inner tube 111 and the inner wall of the outer tube 112 can be greatly reduced, and the situation that the inner tube 111 and the outer tube 112 need to be frequently replaced due to damage can be avoided, thereby reducing the use and maintenance cost of the telescopic pipe 11.

[0063] In some embodiments, the first guide sleeve 113 and the second guide sleeve 114 are fixed to the outer tube 112 and the inner tube 111, respectively, by bolts.

[0064] In some embodiments, the first guide sleeve 113 and the second guide sleeve 114 are made of wear-resistant materials.

[0065] In some embodiments, the first guide sleeve 113 is in clearance fit with the outer wall of the inner tube 111, and the second guide sleeve 114 is in clearance fit with the inner wall of the outer tube 112.

[0066] Reference Figure 1 and Figure 2 As shown in FIG. 1, in some embodiments, the inflation sealing ring 9 is arranged between the inner wall of the outer tube 112 and the second guide sleeve 114.

[0067] In the above embodiments, the inner cavity of the inner tube 111 and the outer tube 112 together forms a liquid transport channel, and the transported liquid is prone to flow into the interlayer between the inner tube 111 and the outer tube 112 through the gap between the second end of the inner tube 111 and the inner wall of the outer tube 112. Therefore, by arranging the inflatable sealing ring 9 between the inner wall of the outer tube 112 and the second guide sleeve 114, the gap between the inner wall of the outer tube 112 and the second guide sleeve 114 can be filled by inflating the inflatable sealing ring 9, thereby preventing liquid or impurities from entering the interlayer between the inner tube 111 and the outer tube 112 through the gap during the operation of the telescopic pipeline system and causing abrasion.

[0068] Referring to Figure 2 In some embodiments, as shown in the drawings, the second guide sleeve 114 includes a body 114a and a flange portion 114b. The body 114a is arranged in the gap between the inner wall of the outer tube 112 and the outer wall of the inner tube 111, and is fixedly connected with the inner tube 111. The flange portion 114b is connected to one side of the body 114a away from the first end of the inner tube 111, and at least partially protrudes from the gap between the inner wall of the outer tube 112 and the outer wall of the inner tube 111. The outer periphery of the flange portion 114b is provided with a groove with an opening facing the inner wall of the outer tube 112, the inflatable sealing ring 9 is arranged in the groove, and the inflation surface of the inflatable sealing ring 9 faces the inner wall of the outer tube 112.

[0069] In the above embodiments, the body 114a is connected with the inner tube 111 by bolts, which can facilitate the assembly and disassembly of the second guide sleeve 114. The outer periphery of the flange portion 114b is provided with a groove with an opening facing the inner wall of the outer tube 112, so that the cross section of the flange portion 114b is U-shaped, and the inner peripheral surface of the flange portion 114b is flush with the inner wall surface of the inner tube 111.

[0070] By arranging the inflatable sealing ring 9 in the groove and making the inflation surface of the inflatable sealing ring 9 face the inner wall of the outer tube 112, when the inflatable sealing ring 9 is inflated, the inflation surface abuts against the inner wall of the outer tube 112, so that the liquid in the inner cavity of the telescopic pipeline 11 cannot enter the gap between the inner tube 111 and the outer tube 112, thereby achieving good sealing effect and preventing particles carried in the liquid from entering the gap and causing abrasion of the outer wall of the inner tube 111 and the inner wall of the outer tube 112.

[0071] In some embodiments, the operating parameters of the telescopic pipeline system include a water pressure value P1 in the telescopic pipeline 11 and an air pressure value P2 in the inflatable sealing ring 9. The control device is configured to inflate the inflatable sealing ring 9 until the air pressure value P2 is greater than or equal to a second preset value P2 01 when the water pressure value P1 is greater than or equal to a first preset value P1 02 , so as to seal the telescopic pipeline 11.

[0072] In some embodiments, the control device is configured to deflate the inflatable sealing ring 9 to release the seal of the telescopic pipeline 11 when the water pressure value P1 is less than a first preset value P 01 .

[0073] During the operation of the telescopic pipeline system, the water pressure in the telescopic pipeline 11 changes with the water level, water flow rate, and other factors. In order to ensure the reliability of the seal of the telescopic pipeline 11 under all working conditions and reduce the operating cost, different sealing measures need to be taken according to the water pressure.

[0074] In the above embodiments, when the water pressure value P1 is less than the first preset value P 01 , water leakage usually does not occur, so the inflatable sealing ring 9 does not need to be inflated. When the water pressure value P1 rises to be greater than or equal to the first preset value P 01 , the probability of water leakage increases, so the inflatable sealing ring 9 should be inflated until the air pressure value P2 in the inflatable sealing ring 9 is greater than or equal to the second preset value P 02 (the second preset value P 02 is the minimum value to ensure that the telescopic pipeline 11 does not leak), so as to seal the telescopic pipeline 11.

[0075] At the end of the operation of the telescopic pipeline system, the water in the telescopic pipeline 11 usually needs to be drained. During this process, the water pressure value P1 in the telescopic pipeline 11 gradually decreases. At this time, the telescopic pipeline 11 does not need to be sealed. When the water pressure value P1 decreases to be less than the first preset value P 01 , the inflatable sealing ring 9 can be deflated to release the seal of the telescopic pipeline 11, so as to further shorten, store, or perform other operations on the telescopic pipeline 11.

[0076] The sizes of the first preset value P 01 and the second preset value P 02 can be adjusted according to actual operating conditions, sealing requirements, and other factors.

[0077] In some embodiments, the telescopic pipeline system further includes a water pump for supplying water to the telescopic pipeline 11.

[0078] In the above embodiments, the water pump is arranged at the axial front end of the telescopic pipeline 11, i.e., near the first end of the inner tube 111, to supply water to the telescopic pipeline 11 through the water pump.

[0079] In some embodiments, the telescopic pipeline system further includes an air supply device configured to inflate the inflatable sealing ring 9 to expand the inflatable sealing ring 9.

[0080] By setting the gas supply device, the inflation pressure of the inflatable sealing ring 9 can be supplemented in real time during the operation of the telescopic pipeline system, thereby ensuring the effectiveness of the sealing.

[0081] In some embodiments, the gas supply device comprises a gas source 7 for providing high-pressure gas and a gas delivery pipeline 10 for delivering the high-pressure gas to the inflatable sealing ring 9.

[0082] Compared with inflation at normal pressure, by setting the gas source 7 for providing high-pressure gas, the volume of the gas source 7 can be reduced, and the gas supply efficiency can be effectively improved.

[0083] In some embodiments, the control device comprises a control valve 6 arranged on the gas delivery pipeline 10; the control valve 6 is configured to, when the water pressure value P1 is greater than or equal to the first preset value P 01 , make the gas source 7 communicate with the inside of the inflatable sealing ring 9, so that the gas supply device supplies gas to the inflatable sealing ring 9.

[0084] In other embodiments, the control valve 6 is configured to, when the gas pressure value P2 is greater than or equal to the second preset value P 02 , disconnect the gas source 7 from the inflatable sealing ring 9, so that the inflatable sealing ring 9 is pressure-maintained.

[0085] In other embodiments, the control valve 6 is configured to, when the water pressure value P1 is less than the first preset value P 01 , disconnect the gas source 7 from the inflatable sealing ring 9 and make the inside of the inflatable sealing ring 9 communicate with the outside, so that the inflatable sealing ring 9 is deflated.

[0086] In the above embodiments, the control valve 6 can be a multi-position multi-control on-off valve, or a valve group comprising multiple valve components. By making the control valve 6 perform different actions, the direction and on-off of the gas delivery pipeline 10 can be adjusted, thereby controlling the inflation state of the inflatable sealing ring 9.

[0087] In some embodiments, the control device further comprises a pressure regulating valve 8 arranged between the gas source 7 and the control valve 6.

[0088] By setting the pressure regulating valve 8, the high-pressure gas flow from the gas source 7 can be adjusted to various different pressures required in the actual inflation process, so as to meet the inflation requirements under different working conditions.

[0089] In other embodiments, the outlet pressure value of the pressure regulating valve 8 can be set to the second preset value P 02 .

[0090] In some embodiments, the control valve 6 comprises a first working position, a second working position and a third working position; the control valve 6 is configured to communicate the air source 7 with the inside of the inflatable seal 9 when in the first working position; and / or the control valve 6 is configured to disconnect the air source 7 from the inflatable seal 9 when in the second working position; and / or the control valve 6 is configured to disconnect the air source 7 from the inflatable seal 9 and communicate the inside of the inflatable seal 9 with the outside when in the third working position.

[0091] In the above embodiments, the control valve 6 can be a three-position five-port solenoid valve, by switching the control valve 6 between the first working position, the second working position and the third working position, the inflation state of the inflatable seal 9 can be changed, thereby changing the sealing state.

[0092] In some embodiments, the control device further comprises a controller 1; the controller 1 is configured to switch the control valve 6 to the first working position when the water pressure value P1 is greater than or equal to a first preset value P 01 ; and / or the controller 1 is configured to switch the control valve 6 to the second working position when the air pressure value P2 is greater than or equal to a second preset value P 02 ; and / or the controller 1 is configured to switch the control valve 6 to the third working position when the water pressure value P1 is less than the first preset value P 01 .

[0093] In the above embodiments, the relationship between the water pressure value P1 and the air pressure value P2 and the preset values can be analyzed and compared by the controller 1, and the control valve 6 is switched between different working positions, thereby changing the inflation state of the inflatable seal 9.

[0094] In some embodiments, the telescopic pipeline system further comprises a display 2, which is signal connected with the control device to display the content input by the control device.

[0095] By setting the display 2, the operator can more clearly understand the working state of the telescopic pipeline system, such as using the display 2 to show the related operating parameters, fault information, alarm information, etc. of the telescopic pipeline system, so as to facilitate the operator to perform corresponding operation according to the current working condition in time, and improve the working efficiency.

[0096] In some embodiments, the operating parameters of the telescopic pipeline system include the water pressure value P1 in the telescopic pipeline 11 and the air pressure value P2 in the inflatable seal 9; the detection device comprises a first sensor 3 and a second sensor 4, the first sensor 3 is used to detect the water pressure value P1, and the second sensor 4 is used to detect the air pressure value P2.

[0097] In the above embodiments, the first sensor 3 is a water pressure sensor, and the second sensor 4 is an air pressure sensor, and the first sensor 3 and the second sensor 4 are both signal connected with the controller 1.

[0098] In some embodiments, the first sensor 3 is installed on the wall surface inside the inner tube 111 close to the water pump, so as to detect the water pressure value P1 in the telescopic pipeline 11 under different working states of the water pump.

[0099] In order to ensure the reliability of the telescopic pipeline system, it is usually necessary to detect the sealing performance of the telescopic pipeline 11.

[0100] For example, in some embodiments, the control device is configured to output a first prompt signal to the display 2 when the change of the air pressure value P2 within a preset time is greater than a first preset threshold value and less than a second preset threshold value; and / or the control device is configured to output a second prompt signal to the display 2 when the change of the air pressure value P2 within a preset time is greater than the second preset threshold value.

[0101] In the above embodiments, when the change of the air pressure value P2 within a preset time is greater than the first preset threshold value and less than the second preset threshold value, it indicates that the inflatable sealing ring 9 is damaged but can still be used, at this time the control device outputs a first prompt signal to the display 2, reminding the operator to replace the inflatable sealing ring 9 in time; when the change of the air pressure value P2 within a preset time is greater than the second preset threshold value, it indicates that the inflatable sealing ring 9 is severely damaged, at this time the control device outputs a second prompt signal to the display 2, reminding the operator that the inflatable sealing ring 9 is damaged and cannot realize sealing, and should be replaced as soon as possible.

[0102] The preset time, the first preset threshold value and the second preset threshold value can all be adjusted as needed.

[0103] Reference Figure 3 As shown in the figure, in some embodiments, the telescopic pipeline system further includes a power supply 5, which is used to supply power to the controller 1, the display 2, the first sensor 3, the second sensor 4, the control valve 6 and other devices.

[0104] The specific structure of one embodiment of the telescopic pipeline system of the present application will be described below.

[0105] Reference Figures 1 to 4 As shown in the figure, the telescopic pipeline system includes a controller 1, a display 2, a first sensor 3, a second sensor 4, a power supply 5, a control valve 6, an air source 7, a pressure regulating valve 8, an inflatable sealing ring 9, a gas conveying pipeline 10, a telescopic pipeline 11, and a water pump, and the telescopic pipeline 11 includes an inner tube 111, an outer tube 112, a first guide sleeve 113 and a second guide sleeve 114.

[0106] In the embodiment, the control valve 6 is a three-position five-port electromagnetic valve, the middle position is O-shaped middle position; the first sensor 3 is a water pressure sensor, the second sensor 4 is a gas pressure sensor, and the first sensor 3 and the second sensor 4 are signal connected with the controller 1.

[0107] With reference to the specific embodiments of the present application Figure 1 As shown in the figure, the front part (i.e. the right end shown in the figure) of the outer pipe 112 of the telescopic pipe 11 is connected with a first guide sleeve 113 which is fixed on the outer pipe 112 by bolts, and the tail part (i.e. the left end shown in the figure) of the inner pipe 111 is installed with a second guide sleeve 114 by bolts, the inner pipe 111 is separated from the outer pipe 112 by the first guide sleeve 113 and the second guide sleeve 114, and the inner pipe 111 can slide relative to the outer pipe 112. The gas delivery pipe 10 is installed on the inner wall of the inner pipe 111 to deliver gas to the inflatable sealing ring 9, and the front part of the inner pipe 111 is installed with a water pump, and the first sensor 3 is installed on the wall inside the inner pipe 111 close to the water pump.

[0108] With reference to the specific embodiments of the present application Figure 2 As shown in the figure, the second guide sleeve 114 includes a body 114a and a flange part 114b; the body 114a is arranged in the gap between the inner wall of the outer pipe 112 and the outer wall of the inner pipe 111, and is connected with the inner pipe 111 by bolts; the flange part 114b is connected to the left side of the body 114a in the figure, and protrudes from the gap between the inner wall of the outer pipe 112 and the outer wall of the inner pipe 111; the outer periphery of the flange part 114b is provided with a groove with an opening facing the inner wall of the outer pipe 112, and the inflatable sealing ring 9 is arranged in the groove, and the expansion surface of the inflatable sealing ring 9 faces the inner wall of the outer pipe 112.

[0109] With reference to the specific embodiments of the present application Figure 3 As shown in the figure, the power supply 5 supplies power to the controller 1, the display 2, the first sensor 3, the second sensor 4 and the control valve 6. The first sensor 3 and the second sensor 4 are signal connected with the controller 1, two ports (+A-P1 port and +A-P2 port) of the control valve 6 are connected with the output end of the controller 1, and the fault alarm and prompt information of the controller 1 are sent to the display 2 through the CAN bus for display. The controller 1 judges whether the inflatable sealing ring 9 can work normally by comparing and analyzing the first preset value P 01 , the second preset value P 02 , the water pressure value P1 measured by the first sensor 3 and the gas pressure value P2 measured by the second sensor 4, to judge whether the seal can be normally opened.

[0110] With reference to the specific embodiments of the present application Figure 4 As shown in the figure, the gas source 7 sends high-pressure gas to the pressure regulating valve 8 through the gas delivery pipe 10, the gas after pressure regulation reaches the control valve 6, the A port of the control valve 6 is connected with the inflatable sealing ring 9, and the second sensor 4 is connected between the control valve 6 and the inflatable sealing ring 9.

[0111] The working process of one embodiment of the telescopic pipeline system of the present application is described below.

[0112] Reference Figure 5 As shown, the structure of the telescopic pipeline system of the present application and the connection relationship of the components are shown, and the telescopic pipeline system of the present application can realize automatic sealing, self-diagnosis of sealing, automatic pressure compensation and other functions, and the specific implementation process is as follows:

[0113] (1) Automatic sealing:

[0114] When the water pump is turned on, as the water level rises until the water pressure value P1 measured by the first sensor 3 installed in the inner pipe 111 is greater than or equal to the first preset value P 01 , the controller 1 makes the +A-P1 port of the control valve 6 electrified, so that the gas from the gas source 7 passes through the pressure regulating valve 8 and the control valve 6 to reach the inflatable sealing ring 9 arranged in the telescopic pipeline 11, the inflatable sealing ring 9 expands to seal the gap between the inner pipe 111 and the outer pipe 112, and since the inflatable sealing ring 9 is located at the tail of the inner pipe 111 (i.e. the sealing surface is located at the tail of the inner pipe 111), it can effectively block the particles such as mud from entering the interlayer gap between the inner pipe 111 and the outer pipe 112.

[0115] When the gas pressure value P2 measured by the second sensor 4 on the gas conveying pipeline 10 is the same as the set value of the pressure regulating valve 8 (i.e. the second preset value P 02 ), the controller 1 makes the +A-P1 port of the control valve 6 de-energized to maintain the sealing.

[0116] When the water pump is decelerated to a smaller speed or stopped, the water pressure value P1 measured by the first sensor 3 will be less than the first preset value P 01 , at this time the controller 1 makes the +A-P2 port of the control valve 6 electrified to block the gas at the gas source 7, and discharge the gas in the inflatable sealing ring 9 to the external environment, so that the inflatable sealing ring 9 returns to the natural state to release the sealing. Further, the controller 1 makes the +A-P2 port of the control valve 6 de-energized, and the control valve 6 returns to the middle position.

[0117] (2) Self-diagnosis of sealing:

[0118] When the telescopic pipeline system is self-checked, the controller 1 makes the +A-P1 port of the control valve 6 electrified, so that the gas from the gas source 7 passes through the pressure regulating valve 8 and the control valve 6 to reach the inflatable sealing ring 9 arranged in the telescopic pipeline 11.

[0119] When the gas pressure value P2 measured by the second sensor 4 on the gas conveying pipeline 10 is the same as the set value of the pressure regulating valve 8 (i.e. the second preset value P 02) the same time, the controller 1 deenergizes the +A-P1 port of the control valve 6, the controller 1 records and compares the change range of the air pressure value P2 within 1 minute, if the change range is less than 10%, it indicates that the inflatable sealing ring 9 is intact; if the change range is greater than 10% and less than 40%, it indicates that the inflatable sealing ring 9 is damaged but can still be used, at this time, the controller 1 outputs a first prompt signal to the display 2, reminding the operator to replace the inflatable sealing ring 9 in time; if the change range is greater than 40%, it indicates that the inflatable sealing ring 9 is severely damaged, at this time, the controller 1 outputs a second prompt signal to the display 2, reminding the operator that the inflatable sealing ring 9 is damaged and cannot realize sealing, and should be replaced as soon as possible.

[0120] (3) Automatic pressure compensation: when the sealing works, the controller 1 energizes the +A-P1 port of the control valve 6, so that the gas from the gas source 7 passes through the pressure regulating valve 8 and the control valve 6 to reach the inflatable sealing ring 9 arranged in the telescopic pipeline 11, when the second sensor 4 on the gas pipeline 10 measures the air pressure value P2, if the air pressure value P2 is equal to the set value (i.e. the second preset value P 02 ) of the pressure regulating valve 8, the controller 1 deenergizes the +A-P1 port of the control valve 6, the controller 1 records the water pressure value P1 measured by the first sensor 3 and the air pressure value P2 measured by the second sensor 4 in real time, when the air pressure value P2 is greater than the water pressure value P1 and less than the set value (i.e. the second preset value P 02 ) of the pressure regulating valve 8, the inflatable sealing ring 9 can work normally and does not need to be compensated, and when the air pressure value P2 is less than the water pressure value P1, it indicates that the sealing will be invalid, the controller 1 energizes the +A-P1 port of the control valve 6, so that the gas from the gas source 7 compensates to the inflatable sealing ring 9, realizing the function of automatic pressure compensation.

[0121] Based on the above telescopic pipeline system, the application further provides a drainage vehicle, which comprises the telescopic pipeline system. The positive technical effects of the above embodiments are also applicable to the drainage vehicle, which will not be repeated here.

[0122] From the above description of the embodiments of the telescopic pipeline system and the drainage vehicle, it can be seen that the telescopic pipeline system and the drainage vehicle have at least the following advantages: by arranging the control device and the detection device, the inflation state of the inflatable sealing ring can be adjusted according to the running state of the telescopic pipeline system, the automatic pressure compensation function of the inflatable sealing ring can be realized, the self-diagnosis sealing state, automatic opening and closing of the sealing and other functions of the telescopic pipeline system can be realized, thereby ensuring the reliability of the pipeline sealing during the drainage operation of the drainage vehicle and improving the working efficiency of the drainage vehicle; in addition, the inflatable sealing ring is arranged between the inner wall of the outer pipe and the second guide sleeve, which can realize good sealing effect while avoiding the particles in the liquid from entering the gap between the inner pipe and the outer pipe, thereby reducing the wear of the inner pipe and the outer pipe and reducing the running and maintenance cost of the telescopic pipeline system and the drainage vehicle.

[0123] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not to limit the present application; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that in the premise of not departing from the principles of the present application, the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones, and these modifications and equivalent replacements should be included in the scope of the technical solutions of the present application.

Claims

1. A telescopic pipeline system, characterized in that, include: The telescopic conduit (11) includes a coaxial outer tube (112) and an inner tube (111). The inner tube (111) is disposed inside the outer tube (112), and the inner tube (111) and the outer tube (112) can slide relative to each other in the axial direction of the telescopic conduit (11) to adjust the length of the telescopic conduit (11). The second end of the inner tube (111) is located in the inner cavity of the outer tube (112), and the first end of the inner tube (111) is located axially outside the outer tube (112) and away from the second end of the outer tube (112). The telescopic pipe (11) further includes a first guide sleeve (113) fixedly connected to a first end of the outer pipe (112), the first guide sleeve (113) being at least partially disposed in the gap between the inner wall of the outer pipe (112) and the outer wall of the inner pipe (111), and the first guide sleeve (113) being slidable relative to the outer wall of the inner pipe (111); and / or the telescopic pipe (11) further includes a second guide sleeve (114) fixedly connected to a second end of the inner pipe (111), the second guide sleeve (114) being at least partially disposed in the gap between the inner wall of the outer pipe (112) and the outer wall of the inner pipe (111), and the second guide sleeve (114) being slidable relative to the inner wall of the outer pipe (112); An inflatable sealing ring (9) is configured to seal the telescopic conduit (11), and the inflatable sealing ring (9) is disposed between the inner wall of the outer tube (112) and the second guide sleeve (114); An air supply device configured to inflate the inflatable sealing ring (9) to cause the inflatable sealing ring (9) to expand, the air supply device including an air supply line (10) installed on the inner wall of the inner tube (111) to deliver gas to the inflatable sealing ring (9). The detection device is configured to detect the operating parameters of the telescopic pipeline system, including the water pressure value P1 in the telescopic pipeline (11) and the air pressure value P2 in the inflatable sealing ring (9); and A control device is connected to the detection device by signal. The control device is configured to adjust the inflation state of the inflatable sealing ring (9) according to the detection result of the detection device. The control device is configured to inflate the inflatable sealing ring (9) until the air pressure value P2 is greater than or equal to the second preset value P02 when the water pressure value P1 is greater than or equal to the first preset value P01, so as to seal the telescopic pipeline (11). And / or the control device is configured to deflate the inflatable sealing ring (9) when the water pressure value P1 is less than the first preset value P01, so as to release the seal on the telescopic pipeline (11).

2. The telescopic pipeline system according to claim 1, characterized in that, The inflatable sealing ring (9) is at least partially disposed in the gap between the inner wall of the outer tube (112) and the outer wall of the inner tube (111) to seal the telescopic pipeline (11) by inflating the inflatable sealing ring (9).

3. The telescopic pipeline system according to claim 1, characterized in that, The second guide sleeve (114) includes a body (114a) and a flange (114b). The body (114a) is disposed in the gap between the inner wall of the outer tube (112) and the outer wall of the inner tube (111), and is fixedly connected to the inner tube (111); The flange (114b) is connected to the side of the body (114a) away from the first end of the inner tube (111), and at least partially protrudes from the gap between the inner wall of the outer tube (112) and the outer wall of the inner tube (111). The outer periphery of the flange (114b) is provided with a groove with an opening facing the inner wall of the outer tube (112), the inflatable sealing ring (9) is disposed in the groove, and the expansion surface of the inflatable sealing ring (9) faces the inner wall of the outer tube (112).

4. The telescopic pipeline system according to claim 1, characterized in that, The gas supply device includes a gas source (7) for providing high-pressure gas, and the gas pipeline (10) for delivering the high-pressure gas to the gas-filled sealing ring (9).

5. The telescopic pipeline system according to claim 4, characterized in that, The control device includes a control valve (6) disposed on the gas pipeline (10); The control valve (6) is configured to operate when the water pressure value P1 is greater than or equal to the first preset value P. 01 At that time, the air source (7) is connected to the interior of the inflatable sealing ring (9) so that the air supply device supplies air to the inflatable sealing ring (9); and / or The control valve (6) is configured to operate when the air pressure value P2 is greater than or equal to the second preset value P. 02 At that time, disconnect the air source (7) from the inflatable sealing ring (9) to maintain pressure in the inflatable sealing ring (9); and / or The control valve (6) is configured to operate when the water pressure value P1 is less than the first preset value P 01 At that time, the air source (7) is disconnected from the inflatable sealing ring (9) and the interior of the inflatable sealing ring (9) is connected to the outside, so that the inflatable sealing ring (9) can vent.

6. The telescopic pipeline system according to claim 5, characterized in that, The control device also includes a pressure regulating valve (8) disposed between the gas source (7) and the control valve (6).

7. The telescopic pipeline system according to claim 5, characterized in that, The control valve (6) includes a first working position, a second working position, and a third working position; The control valve (6) is configured to connect the air source (7) to the interior of the inflatable sealing ring (9) when in the first operating position; and / or The control valve (6) is configured to disconnect the air source (7) from the inflation seal (9) when in the second operating position; and / or The control valve (6) is configured to disconnect the air source (7) from the inflatable sealing ring (9) and make the interior of the inflatable sealing ring (9) open to the outside when it is in the third working position.

8. The telescopic pipeline system according to claim 7, characterized in that, The control device also includes a controller (1); The controller (1) is configured to operate when the water pressure value P1 is greater than or equal to a first preset value P 01 When the control valve (6) is switched to the first operating position; and / or The controller (1) is configured to operate when the air pressure value P2 is greater than or equal to the second preset value P. 02 When the control valve (6) is switched to the second operating position; and / or The controller (1) is configured to operate when the water pressure value P1 is less than the first preset value P 01 When the control valve (6) is switched to the third working position.

9. The telescopic pipeline system according to claim 1, characterized in that, It also includes a display (2), which is signal-connected to the control device to display the content input to it by the control device.

10. The telescopic pipeline system according to claim 9, characterized in that, The operating parameters of the telescopic pipeline system include the water pressure value P1 in the telescopic pipeline (11) and the air pressure value P2 in the inflatable sealing ring (9); the detection device includes a first sensor (3) and a second sensor (4), the first sensor (3) is used to detect the water pressure value P1, and the second sensor (4) is used to detect the air pressure value P2.

11. The telescopic pipeline system according to claim 10, characterized in that, The control device is configured to output a first prompt signal to the display (2) when the change of the air pressure value P2 within a preset time is greater than a first preset threshold and less than a second preset threshold. and / or The control device is configured to output a second prompt signal to the display (2) when the change in the air pressure value P2 within a preset time is greater than the second preset threshold.

12. A drainage vehicle, characterized in that, Includes the telescopic piping system as described in any one of claims 1 to 11.

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