An MPP power corrugated pipe production detection system and detection method

Abstract

The present invention discloses an MPP power corrugated pipe production detection system and a detection method. The MPP power corrugated pipe production detection system includes an inner detection body, on which an inner seal, an inflation groove and an inflation assembly are provided; the inner detection body can be inserted into the inside of the MPP power corrugated pipe, inner seals are respectively provided at both ends of the inner detection body, the inner seals are located on the outer circumferential surface of the inner detection body, and can expand to be in sealing contact with the inner surface of the MPP power corrugated pipe; the inflation groove is located between the two inner seals and can form an inflation cavity with the inner surface of the MPP power corrugated pipe; the inflation assembly is communicated with the inflation groove and can fill pressure gas into the inflation cavity. By using this system for MPP power corrugated pipe production detection, it is possible to realize segmented detection of the MPP power corrugated pipe, reduce the overall volume of the detection system, save space, facilitate use, and reduce the consumption of manpower during feeding.

Description

Technical Field

[0001] The present invention belongs to the technical field of MPP power corrugated pipes, and particularly relates to an MPP power corrugated pipe production detection system and a detection method. Background Art

[0002] A corrugated pipe is a pipe with a regular wavy shape, mainly used for connecting pipes in places where a very small bending radius is required, irregular turning occurs, the pipe will expand and contract, or it is not convenient to install with a fixed elbow. The corrugated pipe can be bent, slightly stretched or compressed. The MPP power corrugated pipe is made of modified polypropylene as the main raw material. Due to its good expansion and contraction performance, heat resistance and heat preservation performance, convenient installation, reliable connection, recyclable raw materials, simple equipment requirements, simple and easy-to-control production process, and random pipe layout, the MPP power corrugated pipe has been more and more widely used.

[0003] At present, after the production of MPP power corrugated pipes, their performance needs to be detected. Since each MPP power corrugated pipe is very long when it is prepared and needs to be cut according to requirements later, the detection equipment is large in volume, occupies a large space, and the cost of the equipment will also increase accordingly. Moreover, when performing detection, it is necessary to manually install the corrugated pipe on the detection equipment for detection. However, due to the large volume of the MPP power corrugated pipe, manual feeding is difficult and requires a lot of manpower. At the same time, when the current detection equipment detects whether there are cracks in the corrugated pipe wall, it cannot mark the pipe section where the crack is located. After the detection is completed, if there are cracks in the MPP power corrugated pipe, the entire MPP power corrugated pipe cannot be used, resulting in a large amount of waste. Summary of the Invention

[0004] In view of the above problems, the present invention discloses an MPP power corrugated pipe production detection system and a detection method to overcome or at least partially solve the above problems.

[0005] The MPP power corrugated pipe production detection system includes an inner detection body, and an inner seal, an inflation groove and an inflation component are provided on the inner detection body; the inner detection body can be inserted into the inside of the MPP power corrugated pipe, inner seals are respectively provided at both ends of the inner detection body, the inner seals are located on the outer circumferential surface of the inner detection body and can expand to be in sealed contact with the inner surface of the MPP power corrugated pipe; the inflation groove is located between the two inner seals and can form an inflation cavity with the inner surface of the MPP power corrugated pipe; the inflation component is communicated with the inflation groove and can fill the inflation cavity with pressurized gas.

[0006] Preferably, the inflation assembly is selectively communicated with the inner seal and the inflation groove, and can respectively fill the inner seal and the inflation chamber with pressurized gas.

[0007] Preferably, the inflation assembly includes a first inner piston and a second inner piston; the first inner piston is slidably connected to the inner detection body, one end of the first inner piston forms a first inner pressure chamber with the inner detection body, the other end of the first inner piston is communicated with the outside, and the first inner pressure chamber is communicated with the inner seal; the second inner piston is slidably connected to the first inner piston and can reciprocate relative to the first inner piston, one end of the second inner piston forms a second inner pressure chamber with the first inner piston, the second inner pressure chamber is communicated with the inflation groove, and the other end of the second inner piston is communicated with the outside; both ends of the second inner piston are communicated through a one-way valve to allow outside gas to flow into the second inner pressure chamber unidirectionally.

[0008] Preferably, the inflation assembly includes a first telescopic rod, a first connecting rod, a first push rod, a first control pin, a first positioning pin and a first elastic member. A connecting rod groove is provided on the first inner piston, and the connecting rod groove is arranged along the direction in which the second inner piston reciprocates relative to the first inner piston and communicates the second inner pressure chamber and the inflation groove; the first telescopic rod is arranged along the direction in which the first inner piston reciprocates relative to the inner detection body, one end is fixed to the inner detection body, and the other end is fixedly connected to one end of the first connecting rod. The other end of the first connecting rod passes through the connecting rod groove and is fixedly connected to the second inner piston; the first push rod is slidably connected to the first inner piston along the direction in which the second inner piston reciprocates relative to the first inner piston, one end extends into the connecting rod groove, and the other end is a slope; a first control groove is provided on the first inner piston, the first control groove is located at one end close to the slope in the first push rod and is arranged perpendicular to the first push rod; the first control pin is slidably arranged in the first control groove, and one end of the first control pin is a slope; the first positioning pin is slidably connected to the inner detection body, and the first elastic member is connected to the first positioning pin to drive the upper end of the first positioning pin to extend into the first control groove and push the slope of the first control pin out of the first control groove to contact the slope of the first push rod, and push the other end of the first push rod out into the connecting rod groove.

[0009] Preferably, the MPP power corrugated pipe production detection system further includes an outer detection body; the outer detection body is sleeved outside the MPP power corrugated pipe and can reciprocate along the length direction of the MPP power corrugated pipe; an outer magnet is provided on the inner surface of the outer detection body, and an inner magnet is provided on the outer surface of the inner detection body. The outer detection body and the inner detection body are adsorbed and connected through the outer magnet and the inner magnet.

[0010] Preferably, the external detector is composed of a first external detector and a second external detector. The first external detector and the second external detector are slidably inserted and connected along the length direction of the MPP power corrugated pipe, and can move relative to each other along the length direction of the MPP power corrugated pipe. A first external seal and a first external piston are provided on the first external detector. The first external seal is located on the inner surface of the first external detector. The first external piston is movably connected to the first external detector, and a first external pressure chamber is formed at one end. The first external pressure chamber is communicated with the first external seal and can drive the first external seal to expand until it contacts the outer surface of the MPP power corrugated pipe. A second external seal and a second external piston are provided on the second external detector. The second external seal is located on the inner surface of the second external detector. The second external piston is movably connected to the second external detector, and a second external pressure chamber is formed at one end. The second external pressure chamber is communicated with the second external seal and can drive the second external seal to expand reciprocally until it contacts the outer surface of the MPP power corrugated pipe.

[0011] Preferably, the MPP power corrugated pipe production detection system includes a second telescopic rod, a third telescopic rod, a first inclined block and a second inclined block. First bosses and second bosses are provided on the second external detector. The first boss and the second boss are respectively located on both sides of the second external piston. One end of the second telescopic rod is fixed on the first external detector, and a first inclined block is fixed at the other end. The inclined surface of the first inclined block is in sliding contact with the first external piston to drive the first external piston to move reciprocally. One end of the third telescopic rod is fixed on the first external detector, and a second inclined block is fixed at the other end. The inclined surface of the second inclined block is in sliding contact with the second external piston to drive the second external piston to move reciprocally.

[0012] Preferably, the MPP power corrugated pipe production detection system further includes a marking piston, a marking push rod and a marking wheel. The marking piston is slidably connected to the first external detector and is located between the first external seal and the second external seal. One end of the marking piston is communicated with the sealed chamber formed by the external detector, the MPP power corrugated pipe, the first external seal and the second external seal. The other end of the marking piston is in inclined surface sliding connection with the marking push rod. The other end of the marking push rod is connected to the marking wheel and can drive the marking wheel to move until it contacts the outer surface of the MPP power corrugated pipe.

[0013] Preferably, the MPP power corrugated pipe production detection system includes a marking connecting rod and a marking torsion spring; one end of the marking connecting rod is rotatably connected to the marking push rod through the marking torsion spring, and the other end of the marking connecting rod is rotatably connected to the marking wheel; the marking torsion spring drives the marking connecting rod to rotate relative to the marking push rod until the marking wheel is away from the outer surface of the MPP power corrugated pipe.

[0014] An MPP power corrugated pipe production detection method uses the MPP power corrugated pipe production detection system described in any one of the above to perform production detection on the MPP power corrugated pipe, and specifically includes the following steps:

[0015] Step S1, feeding: Insert the inner detection body into the MPP power corrugated pipe.

[0016] Step S2, sealing: Control the inner seal to expand until it is in sealed contact with the inner surface of the MPP power corrugated pipe, and form an inflation chamber between the MPP power corrugated pipe and the inner detection body.

[0017] Step S3, detection: Control the inflation component to fill the inflation chamber with pressurized gas, increase the internal pressure in a local area of the MPP power corrugated pipe, and perform detection according to the pressure change.

[0018] Step S4, moving: After completing the detection in step S3, release the pressurized gas in the inflation chamber, control the inner seal to contract, and adjust the position of the inner seal inside the MPP power corrugated pipe.

[0019] Step S5, cyclic detection: Repeat steps S1 - S4 to perform segment-by-segment detection on the MPP power corrugated pipe.

[0020] Using the MPP power corrugated pipe production detection system of the present invention to detect the MPP power corrugated pipe has the following beneficial technical effects:

[0021] 1. In the present invention, by inserting the inner detection body of the MPP power corrugated pipe production detection system into the MPP power corrugated pipe, using the expansion of the two inner seals to form an internal seal of the MPP power corrugated pipe, and then filling the inflation chamber with pressurized gas, the MPP power corrugated pipe of this section can be detected. Then, by releasing the pressurized gas in the two inner seals, the position of the inner detection body inside the MPP power corrugated pipe can be moved, realizing the segment-by-segment detection operation of the MPP power corrugated pipe. Furthermore, the overall volume of the detection system is reduced, saving space, facilitating use, and reducing the consumption of manpower during feeding.

[0022] 2. In the present invention, by arranging an outer detector outside the MPP power corrugated pipe, and arranging an inner magnet and an outer magnet on the inner detector and the outer detector respectively, the magnetic adsorption connection formed between the two magnets can be utilized. Thus, through the movement of the outer detector along the MPP power corrugated pipe, the inner detector can be driven to move along the MPP power corrugated pipe, realizing the automatic segment-by-segment detection of the MPP power corrugated pipe, saving manpower and improving the detection effect.

[0023] 3. In the present invention, the first telescopic rod drives the first inner piston and the second inner piston to move back and forth respectively through the first connecting rod. Thus, the first inner piston can be utilized to drive the inner seal to expand respectively, achieving the inner sealing operation of the MPP power corrugated pipe. And the second inner piston can be used to fill the sealing cavity with pressurized gas to detect the MPP power corrugated pipe, achieving the operations of sealing and detection by one driving mechanism, reducing the number of driving elements, simplifying the structure, reducing the cost, and improving the convenience of operation and use.

[0024] 4. In the present invention, by arranging a sealing cavity between the outer detector and the MPP power corrugated pipe, arranging a marking piston and a marking wheel communicated with the sealing cavity on the outer detector, and using the leakage of pressurized gas from the inflation cavity into the sealing cavity to drive the movement of the marking piston, the marking wheel can be driven to move into contact with the outer surface of the MPP power corrugated pipe, thus forming an automatic marking of the MPP power corrugated pipe with cracks, facilitating the subsequent accurate cutting operation of the MPP power corrugated pipe, saving materials, improving the use efficiency of the MPP power corrugated pipe, and avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the MPP power corrugated pipe production detection system in this embodiment;

[0026] Figure 2 is Figure 1 a partial enlarged structural diagram at I in

[0027] Figure 3 is Figure 1 a partial enlarged structural diagram at II in

[0028] Figure 4 is Figure 1 a partial enlarged structural diagram at III in

[0029] Figure 5 is Figure 1 a partial enlarged structural diagram at IV in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0031] Combined Figures 1 to 5 As shown, this embodiment discloses an MPP power corrugated pipe production detection system, which includes an inner detection body 1, on which an inner seal 2, an inflation groove 3 and an inflation assembly 4 are provided. Among them, the inner detection body 1 can be inserted into the inside of the MPP power corrugated pipe 5. Inner seals 2 are provided at both ends of the inner detection body 1. The inner seals 2 are located on the outer circumferential surface of the inner detection body 1 and can expand to be in sealing contact with the inner surface of the MPP power corrugated pipe 5. The inflation groove 3 is located between the two inner seals 2 and can form an inflation cavity 6 with the inner surface of the MPP power corrugated pipe 5. The inflation assembly 4 is communicated with the inflation groove 3 and can inject pressurized gas into the inflation cavity 6.

[0032] When using the MPP power corrugated pipe production detection system of this embodiment to detect the production of MPP power corrugated pipes, after inserting the inner detection body into the inside of the MPP power corrugated pipe, control the two inner seals to expand and contact the inner surface of the MPP power corrugated pipe to form a seal, so as to form a closed inflation cavity between the MPP power corrugated pipe, the inner detection body and the two inner seals. Then, inject pressurized gas into the inflation cavity through the inflation assembly to increase the pressure of the inflation cavity. Then, according to the pressure change of the inflation cavity, this section of MPP power corrugated pipe can be detected. If there is a crack, the pressure will drop, otherwise the pressure remains unchanged. After that, the position of the inner detection body inside the MPP power corrugated pipe can be moved to realize the step-by-step detection operation of the MPP power corrugated pipe.

[0033] Among them, in this embodiment, the inflation assembly is selectively communicated with the inner seal and the inflation groove, and can inject pressurized gas into the inner seal and the inflation groove respectively. Thus, by means of one inflation assembly, the inflation operations of the inner seal and the inflation cavity can be realized respectively, reducing the structure of the entire inner detection body, reducing the size of the entire MPP power corrugated pipe production detection system, and improving the convenience of use.

[0034] Combined Figure 1 As shown, the inflation assembly 4 of this embodiment includes a first inner piston 7 and a second inner piston 8. The first inner piston 7 is located inside the inner detection body 1 and is slidably connected to the inner detection body 1. A first inner pressure chamber 9 is formed between one end of the first inner piston 7 and the inner detection body 1. The other end of the first inner piston 7 is communicated with the outside. The first inner pressure chamber 9 is communicated with the inner seal 2. The second inner piston 8 is located inside the first inner piston 7 and is slidably connected to the first inner piston 7 and can reciprocate relative to the first inner piston 7. A second inner pressure chamber 10 is formed between one end of the second inner piston 8 and the first inner piston 7. The second inner pressure chamber 10 is communicated with the inflation groove 3. The other end of the second inner piston 8 is also communicated with the outside. At the same time, both ends of the second inner piston 8 are communicated through a one-way valve 11 to allow outside gas to flow into the second inner pressure chamber 10 unidirectionally.

[0035] At this time, by controlling the reciprocating movement of the first inner piston relative to the inner detection body, the expansion and contraction of the inner seal can be controlled, so as to achieve the connection control between the inner detection body and the MPP power corrugated pipe. By controlling the reciprocating movement of the second inner piston relative to the first inner piston, the gas pressure in the inflation chamber can be increased to detect the MPP power corrugated pipe, and the pressure gas in the inflation chamber can be released by the contraction of the inner seal.

[0036] Furthermore, as shown in Figure 1 and Figure 5 in the inflation assembly 4 of this embodiment, it includes a first telescopic rod 12, a first connecting rod 13, a first push rod 14, a first control pin 15, a first positioning pin 16 and a first elastic member 17. A connecting rod groove 18 is provided on the first inner piston 7. The connecting rod groove 18 is arranged along the direction of the reciprocating movement of the second inner piston 8 relative to the first inner piston 7, and communicates the second inner pressure chamber 10 and the inflation groove 3. The first telescopic rod 12 is arranged along the direction of the reciprocating movement of the first inner piston 7 relative to the inner detection body 1, one end is fixed on the inner detection body 1, and the other end is fixedly connected to one end of the first connecting rod 13. The other end of the first connecting rod 13 passes through the connecting rod groove 18 and is fixedly connected to the second inner piston 8. The first push rod 14 is located inside the first inner piston 7 and is slidably connected to the first inner piston 7 along the direction of the reciprocating movement of the second inner piston 8 relative to the first inner piston 7. One end extends to the connecting rod groove 18, and the other end is a slope. A first control groove 19 is also provided on the first inner piston 7. The first control groove 19 is located at one end close to the slope in the first push rod 14 and is arranged perpendicular to the reciprocating movement direction of the first push rod 14. The first control pin 15 is slidably arranged in the first control groove 19, and one end of the first control pin 15 is a slope. The first positioning pin 16 is slidably connected to the inner detection body 1. The first elastic member 17 is a helical spring and is connected to the first positioning pin 16 to drive the upper end of the first positioning pin 16 to extend into the first control groove 19, so as to push the slope of the first control pin 15 out of the first control groove 19 to contact the slope of the first push rod 14, and further push the first push rod 14 to move so that the other end of the first push rod 14 is pushed out into the connecting rod groove 18.

[0037] At this time, by controlling the reciprocating movement of the first telescopic rod, the actions of the first inner piston and the second inner piston can be controlled, and further the expansion of the inner seal and the filling of the pressure gas into the inflation chamber can be controlled. Specifically, when the first telescopic rod moves from Figure 1When performing a contraction movement at the shown position, the first telescopic rod drives the first connecting rod to move leftward to the left end of the connecting rod groove, thereby driving the first inner piston to move synchronously leftward, thereby compressing the first inner pressure chamber, pushing the gas in the first inner pressure chamber into the inner seal. When the first telescopic rod contracts to the end position, the inner seal fully expands to form a contact seal with the inner surface of the MPP power bellows. At the same time, the first inner piston drives the first control pin to move to a position aligned with the first positioning pin. The first positioning pin extends into the first control groove under the drive of the first elastic member and pushes the first control pin to move into contact with the first push rod, thereby pushing the left end of the first push rod out to the connecting rod groove, and the first positioning pin completes the position limitation between the first inner piston and the inner detection body. After that, control the first telescopic rod to perform reciprocating telescopic movement within the length range of the connecting rod groove, so that the first connecting rod drives the second inner piston to perform reciprocating movement relative to the first inner piston without touching the first push rod, thereby continuously transporting external gas to the second inner pressure chamber through the one-way valve, and then transporting it to the inflation chamber through the connecting rod groove, so that the pressure in the inflation chamber gradually increases, thereby detecting this section of the MPP power bellows. After the detection is completed, control the first telescopic rod to perform an extension movement, drive the first connecting rod into contact with the first push rod, thereby pushing the first control pin and the first positioning pin to move against the first elastic member through the inclined surfaces of the first push rod and the first control pin, and completely push the first positioning pin into the inner detection body, releasing the limit between the first inner piston and the inner detection body. After that, continue to control the first telescopic rod to perform an extension movement, drive the first inner piston to move to the Figure 1 right side shown, increasing the volume of the first inner pressure chamber, recovering the pressurized gas in the inner seal to the first inner pressure chamber, thereby releasing the seal between the inner seal and the MPP power bellows, releasing the pressure in the inflation chamber, and moving the inner detection body to an internal position in the MPP power bellows.

[0038] Of course, in other embodiments, other methods can also be used for the expansion of the inner seal and the inflation operation of the inflation chamber. For example, an inflation pressure pump can be separately provided to separately fill the inner seal and the inflation chamber with pressurized gas. Even, two telescopic rods can be separately provided to separately control the reciprocating movement of the two inner pistons.

[0039] Combined Figure 1 As shown, in the MPP power bellows production and detection system of this embodiment, an outer detection body 20 is further included. The outer detection body 20 is sleeved outside the MPP power bellows 5 and can reciprocate along the length direction of the MPP power bellows 5. At the same time, an outer magnet 21 is provided on the inner surface of the outer detection body 20, and an inner magnet 22 is provided on the outer surface of the inner detection body 1. The outer detection body 20 and the inner detection body 1 are adsorbed and connected through the outer magnet 21 and the inner magnet 22.

[0040] At this time, after a certain section of the MPP power corrugated pipe is detected by using the internal detection body, the external detection body can be used to drive the internal detection body to move inside the MPP power corrugated pipe through the adsorption connection between the outer magnet and the inner magnet by moving along the length direction of the MPP power corrugated pipe, so as to realize the step-by-step detection operation of the MPP power corrugated pipe.

[0041] Combined with Figure 1 As shown in the figure, in this embodiment, the external detection body 20 is designed with a split structure, and is specifically composed of a first external detection body 23 and a second external detection body 24. Among them, the first external detection body 23 and the second external detection body 24 are slidably inserted and connected along the length direction of the MPP power corrugated pipe 5, and can move relatively back and forth along the length direction of the MPP power corrugated pipe 5.

[0042] At the same time, a first external seal 25 and a first external piston 26 are provided on the first external detection body 23. The first external seal 25 is in the shape of a balloon and is located on the inner surface of the first external detection body 23. The first external piston 26 is movably connected to the first external detection body 23, and a first external pressure chamber 27 is formed between one end of the first external piston 26 and the first external detection body 23, and the other end communicates with the outside. The first external pressure chamber 27 communicates with the first external seal 25 and can drive the first external seal 25 to expand and contact the outer surface of the MPP power corrugated pipe 5. A second external seal 28 and a second external piston 29 are provided on the second external detection body 24. The second external seal 28 is in the shape of a balloon and is located on the inner surface of the second external detection body 24. The second external piston 29 is movably connected to the second external detection body 24, and a second external pressure chamber 30 is formed between one end of the second external piston 29 and the second external detection body 24, and the other end communicates with the outside. The second external pressure chamber 30 communicates with the second external seal 28 and can drive the second external seal 28 to expand and contact the outer surface of the MPP power corrugated pipe 5.

[0043] By designing the external detection body as a split structure that can move relatively back and forth, and respectively arranging external seals and corresponding pistons on the two external detection bodies, the reciprocating movement of the corresponding pistons can be used to control the expansion and contraction of the corresponding external seals, so as to control the fixed connection between the corresponding external detection body and the MPP power corrugated pipe. In this way, by using the separate fixed connections formed by the first external detection body and the second external detection body with the MPP power corrugated pipe, and then using the relative reciprocating movement between the first external detection body and the second external detection body along the length direction of the MPP power corrugated pipe, crawling along the MPP power corrugated pipe can be formed, so as to drive the internal detection body to move along the length direction of the MPP power corrugated pipe and realize the detection of different positions of the MPP power corrugated pipe.

[0044] Of course, in other embodiments, the outer detection body can also be reciprocally moved along the length direction of the MPP power corrugated pipe in other ways. For example, the reciprocating movement along the length direction of the MPP power corrugated pipe can be formed by using a power-driven wheel.

[0045] Combined with Figure 1 As shown, in the MPP power corrugated pipe production and detection system of this embodiment, it further includes a second telescopic rod 31, a third telescopic rod 32, a first inclined block 33, and a second inclined block 34. At the same time, a first boss 35 and a second boss 36 are provided on the second outer detection body 24, and the first boss 35 and the second boss 36 are respectively located on both sides of the second outer piston 29. Among them, one end of the second telescopic rod 31 is fixed on the first outer detection body 23, and the other end is fixed with the first inclined block 33, and the inclined surface of the first inclined block 33 is in sliding contact with the first outer piston 26 to drive the first outer piston 26 to reciprocate relative to the first outer detection body 23. One end of the third telescopic rod 32 is also fixed on the first outer detection body 23, and the other end is fixed with the second inclined block 34. The second inclined block 34 is located between the first boss 35 and the second boss 36, and the inclined surface of the second inclined block 34 is in sliding contact with the second outer piston 29 to drive the second outer piston 29 to reciprocate relative to the second outer detection body 24. After the third telescopic rod 32 pushes the second inclined block 34 over the second outer piston 29, it can form an abutment with the first boss 35 to drive the first outer detection body 23 to move relative to the second outer detection body 24. After the third telescopic rod 32 drives the second inclined block 34 to move to form an abutment with the second boss 36 and then continues to contract, it can drive the second outer detection body 24 to move relative to the first outer detection body 23.

[0046] At this time, by controlling the second telescopic rod and the third telescopic rod to reciprocate alternately, the first outer seal and the second outer seal can be alternately inflated and contracted, so as to realize the alternate fixed connection between the first outer detection body and the second outer detection body and the MPP power corrugated pipe. Furthermore, in cooperation with the abutment between the third telescopic rod and the first boss and the second boss respectively during the reciprocating telescopic movement process, the reciprocating movement of the first outer detection body and the second outer detection body along the length direction of the MPP power corrugated pipe can be achieved.

[0047] Combined with Figures 1 to 4As shown, in the MPP power corrugated pipe production and detection system of this embodiment, it further includes a marking piston 37, a marking push rod 38, and a marking wheel 39. Among them, the marking piston 37 is slidably connected to the first outer detection body 23 and is located between the first outer seal 25 and the second outer seal 28. The lower end of the marking piston 37 communicates with the sealed cavity 40 formed among the first outer detection body 23, the MPP power corrugated pipe 5, the first outer seal 25, and the second outer seal 28. The other end of the marking piston 37 is slidably connected to the marking push rod 38 by an inclined plane. The other end of the marking push rod 38 is slidably connected to the first outer detection body 23 in the horizontal direction and is connected to the marking wheel 39, and can drive the marking wheel 39 to move into contact with the outer surface of the MPP power corrugated pipe 5.

[0048] At this time, after filling the inflation cavity with pressurized gas, if there is a crack in this section of the MPP power corrugated pipe, the pressurized gas in the inflation cavity leaks into the sealed cavity, thereby driving the marking piston to move upward relative to the first outer detection body, and then pushing the marking push rod to move horizontally relative to the first outer detection body, and finally driving the marking wheel to move into contact with the outer surface of the MPP power corrugated pipe, achieving the marking of the position of this section of the MPP power corrugated pipe, so as to accurately determine the damage position of the MPP power corrugated pipe and achieve the accurate detection effect of the MPP power corrugated pipe.

[0049] Furthermore, as shown in Figure 3 and Figure 4 in the MPP power corrugated pipe production and detection system of this embodiment, it further includes a marking connecting rod 41 and a marking torsion spring 42. Among them, one end of the marking connecting rod 41 is rotatably connected to the end of the marking push rod 38 through the marking torsion spring 42, and the other end of the marking connecting rod 41 is rotatably connected to the marking wheel 39. The marking torsion spring 42 drives the marking connecting rod 41 to rotate relative to the marking push rod 38 until the marking wheel 39 is away from the outer surface of the MPP power corrugated pipe 5.

[0050] At this time, when there is no pressurized gas in the sealed cavity, the marking push rod is in the position shown in Figure 1 under the action of the marking torsion spring, and the marking wheel is rotated to a position away from the surface of the MPP power corrugated pipe through the marking connecting rod. On the contrary, when the pressurized gas in the sealed cavity increases, the marking piston pushes the marking push rod to move to both sides against the acting force of the marking torsion spring, thereby driving the marking wheel to move into contact with the surface of the MPP power corrugated pipe through the marking connecting rod, achieving the marking operation on the surface of the MPP power corrugated pipe. After that, after the gas pressure in the sealed cavity decreases, under the action of the marking torsion spring, the marking push rod can be driven to move to the position shown in Figure 1 again, and then the marking wheel is driven away from the MPP power corrugated pipe through the marking connecting rod, realizing the control of the reciprocating movement of the marking wheel.

[0051] As shown inFigures 1 to 5 As shown in Figures 1 to 5 , the method for producing and detecting MPP power corrugated pipes using the MPP power corrugated pipe production and detection system of this embodiment specifically includes the following steps:

[0052] Step S1, feeding: Insert the inner detection body into the interior of the MPP power corrugated pipe.

[0053] Specifically, insert the inner detection body 1 into the interior of the MPP power corrugated pipe 5, sleeved the first outer detection body 23 and the second outer detection body 24 on the outside of the MPP power corrugated pipe 5 respectively, make the first outer detection body 23 and the second outer detection body 24 be inserted and connected, and align the outer magnet 21 on the first outer detection body 23 with the inner magnet 22 on the inner detection body 1 to form a magnetic adsorption connection.

[0054] Step S2, sealing: Control the inner seal to expand until it is in sealing contact with the inner surface of the MPP power corrugated pipe, and form an inflation cavity between the MPP power corrugated pipe and the inner detection body.

[0055] Specifically, control the first telescopic rod 12 to perform a contraction movement, drive the first connecting rod 13 to move leftward to the left end of the connecting rod groove 18, thereby driving the first inner piston 7 to move leftward synchronously, thereby compressing the first inner pressure cavity 9, and pushing the gas in the first inner pressure cavity 9 into the inner seal 2. When the first telescopic rod 12 contracts to the end position, the inner seal 2 is fully expanded to form a contact seal with the inner surface of the MPP power corrugated pipe 5, completing the fixed connection between the inner detection body 1 and the MPP power corrugated pipe 5, and completing the sealing of the interior of the MPP power corrugated pipe 5. At the same time, the first inner piston 7 drives the first control pin 15 to move leftward to a position aligned with the first positioning pin 16. The first positioning pin 16 extends into the first control groove 19 under the drive of the first elastic member 17 to push the first control pin 15 to move into contact with the first push rod 14, thereby pushing the left end of the first push rod 14 out to the connecting rod groove 18, and the first positioning pin 16 completes the position limitation between the first inner piston 7 and the inner detection body 1. Then, control the second telescopic rod 31 to perform an extension action, drive the first inclined block 33 to drive the first outer piston 26 to move relative to the first outer detection body 23, thereby inflating and expanding the first outer seal 25, so that the first outer seal 25 expands to be in sealing contact with the MPP power corrugated pipe 5, completing the outer sealing connection between the first outer detection body 23 and the MPP power corrugated pipe 5. Control the third telescopic rod 32 to perform an extension action, drive the second inclined block 34 to drive the second outer piston 29 to move relative to the second outer detection body 24, thereby inflating and expanding the second outer seal 28, so that the second outer seal 28 expands to be in sealing contact with the MPP power corrugated pipe 5, completing the outer sealing connection between the second outer detection body 24 and the MPP power corrugated pipe 5.

[0056] Step S3, Detection: Control the inflation component to fill the inflation chamber with pressurized gas, increase the internal pressure of a local area in the MPP power bellows, and perform detection based on the pressure change.

[0057] Specifically, control the first telescopic rod 12 to reciprocate and telescopically move within the length range of the connecting rod groove 18 again, so that the first connecting rod 13 drives the second inner piston 8 to reciprocate relative to the first inner piston 7 without touching the first push rod 14, thereby continuously conveying external gas to the second inner pressure chamber 10 through the one-way valve 11, and then conveying it to the inflation chamber 6 through the connecting rod groove 18, causing the pressure in the inflation chamber 6 to gradually increase. At this time, if there is a crack at the position of the MPP power bellows 5 corresponding to the inflation chamber 6, the pressurized gas in the inflation chamber 6 leaks into the sealing chamber 40, driving the marking piston 37 to move upward relative to the first outer detection body 23, thereby pushing the marking push rod 38 to move horizontally relative to the first outer detection body 23 against the force of the marking torsion spring 42, and then driving the marking wheel 39 to move into contact with the outer surface of the MPP power bellows 5, achieving marking of the position of this section of the MPP power bellows 5 and completing the detection operation.

[0058] Step S4, Movement: After completing the detection in step S3, release the pressurized gas in the inflation chamber, control the inner seal to contract, and adjust the position of the inner seal inside the MPP power bellows.

[0059] Specifically, after completing the detection in step S3, control the first telescopic rod 12 to extend, drive the first connecting rod 13 to push the first push rod 14 to move to the right, and push the first control pin 15 and the first positioning pin 16 to move against the first elastic member 17 through the inclined surfaces of the first push rod 14 and the first control pin 15, and push the first positioning pin 16 into the inner detection body 1 to release the limit between the first inner piston 7 and the inner detection body 1. Then, continue to control the first telescopic rod 12 to extend, driving the first inner piston 7 to Figure 1The rightward movement shown increases the volume of the first internal pressure chamber 9, recovering the pressurized gas in the internal seal 2 into the first internal pressure chamber 9, thereby releasing the seal between the internal seal 2 and the MPP power bellows 5 and releasing the pressure in the inflation chamber 6. After that, control the third telescopic rod 32 to extend, driving the second inclined block 34 to abut against the second outer piston 29 and the first boss 35. Continue to control the third telescopic rod 32 to extend, and it is possible to drive the first outer detection body 23 to move relative to the second outer detection body 24 along the MPP power bellows 5. The magnetic adsorption connection between the outer magnet 21 and the inner magnet 22 drives the inner detection body 1 to move synchronously along the MPP power bellows 5. Then, control the second telescopic rod 31 to extend, so that the first inclined block 33 drives the first outer piston 26 to compress the gas in the first outer pressure chamber 27 and output it to the first outer seal 25 for expansion, so that the first outer detection body 23 is fixedly connected to the MPP power bellows 5 again. Then, control the third telescopic rod 32 to contract, releasing the contact between the second inclined block 34 and the second outer piston 29, so that the second outer seal 28 releases the pressurized gas and releases the fixed connection between the second outer detection body 24 and the MPP power bellows 5. At the same time, drive the second inclined block 34 to contact the second boss 36 to drive the second outer detection body 24 to move along the MPP power bellows 5 in the direction close to the first outer detection body 23. After moving to the next position, control the third telescopic rod 32 to drive the second inclined block 34 to contact the second outer piston 29 again, so that the second outer seal 28 expands again to form a fixed connection with the MPP power bellows 5, thus completing the position movement of the first outer detection body 23 and the second outer detection body 24 along the MPP power bellows 5.

[0060] Step S5, cyclic detection: Repeat steps S1 - S4 to detect the MPP power bellows 5 section by section. After completing the detection of the entire MPP power bellows 5, the area with crack problems can be quickly and accurately cut according to the marks, and the remaining MPP power bellows 5 can be used normally.

Claims

1. An MPP power corrugated pipe production detection system, characterized in that It includes an internal detection body, on which an internal seal, an inflation groove and an inflation assembly are provided; the internal detection body can be inserted inside the MPP power corrugated pipe, internal seals are provided at both ends of the internal detection body, the internal seals are located on the outer circumferential surface of the internal detection body and can expand to be in sealing contact with the inner surface of the MPP power corrugated pipe; the inflation groove is located between the two internal seals and can form an inflation cavity with the inner surface of the MPP power corrugated pipe; the inflation assembly is communicated with the inflation groove and can fill the inflation cavity with pressurized gas; The inflation assembly is selectively communicated with the internal seal and the inflation groove and can respectively fill the internal seal and the inflation cavity with pressurized gas; The inflation assembly includes a first internal piston and a second internal piston; the first internal piston is slidably connected to the internal detection body, one end of the first internal piston forms a first internal pressure cavity with the internal detection body, the other end of the first internal piston is communicated with the outside, and the first internal pressure cavity is communicated with the internal seal; the second internal piston is slidably connected to the first internal piston and can reciprocate relative to the first internal piston, one end of the second internal piston forms a second internal pressure cavity with the first internal piston, the second internal pressure cavity is communicated with the inflation groove, and the other end of the second internal piston is communicated with the outside; both ends of the second internal piston are communicated through a one-way valve to allow outside gas to flow into the second internal pressure cavity unidirectionally; The inflation assembly includes a first telescopic rod, a first connecting rod, a first push rod, a first control pin, a first positioning pin and a first elastic member. A connecting rod groove is provided on the first internal piston. The connecting rod groove is arranged along the direction in which the second internal piston reciprocates relative to the first internal piston and communicates the second internal pressure cavity and the inflation groove; the first telescopic rod is arranged along the direction in which the first internal piston reciprocates relative to the internal detection body, one end is fixed to the internal detection body, and the other end is fixedly connected to one end of the first connecting rod. The other end of the first connecting rod passes through the connecting rod groove and is fixedly connected to the second internal piston; the first push rod is slidably connected to the first internal piston along the direction in which the second internal piston reciprocates relative to the first internal piston, one end extends into the connecting rod groove, and the other end is a slope; a first control groove is provided on the first internal piston. The first control groove is located at one end close to the slope of the first push rod and is arranged perpendicular to the first push rod; the first control pin is slidably arranged in the first control groove, and one end of the first control pin is a slope; The first positioning pin is slidably connected to the internal detection body, and the first elastic member is connected to the first positioning pin to drive the upper end of the first positioning pin to extend into the first control groove and push the slope of the first control pin out of the first control groove to contact the slope of the first push rod, and push the other end of the first push rod out into the connecting rod groove.

2. The MPP power corrugated pipe production detection system according to claim 1, wherein, It further includes an outer detector; the outer detector is sleeved outside the MPP power corrugated pipe and can reciprocate along the length direction of the MPP power corrugated pipe; an outer magnet is provided on the inner surface of the outer detector, and an inner magnet is provided on the outer surface of the inner detector, and the outer detector and the inner detector are adsorbed and connected through the outer magnet and the inner magnet.

3. The MPP power corrugated pipe production detection system according to claim 2, wherein, The outer detector is composed of a first outer detector and a second outer detector. The first outer detector and the second outer detector are slidably inserted and connected along the length direction of the MPP power corrugated pipe and can relatively move along the length direction of the MPP power corrugated pipe; a first outer seal and a first outer piston are provided on the first outer detector. The first outer seal is located on the inner surface of the first outer detector. The first outer piston is movably connected to the first outer detector, and a first outer pressure chamber is formed at one end. The first outer pressure chamber is communicated with the first outer seal and can drive the first outer seal to expand until it contacts the outer surface of the MPP power corrugated pipe. A second outer seal and a second outer piston are provided on the second outer detector. The second outer seal is located on the inner surface of the second outer detector. The second outer piston is movably connected to the second outer detector, and a second outer pressure chamber is formed at one end. The second outer pressure chamber is communicated with the second outer seal and can drive the second outer seal to reciprocally expand until it contacts the outer surface of the MPP power corrugated pipe.

4. The MPP power corrugated pipe production and detection system according to claim 3, wherein, It includes a second telescopic rod, a third telescopic rod, a first inclined block and a second inclined block. First bosses and second bosses are provided on the second outer detector. The first boss and the second boss are respectively located on both sides of the second outer piston; one end of the second telescopic rod is fixed on the first outer detector, and the first inclined block is fixed at the other end. The inclined surface of the first inclined block is in sliding contact with the first outer piston to drive the first outer piston to reciprocate; one end of the third telescopic rod is fixed on the first outer detector, and the second inclined block is fixed at the other end. The inclined surface of the second inclined block is in sliding contact with the second outer piston to drive the second outer piston to reciprocate.

5. The MPP power corrugated pipe production and detection system according to claim 4, wherein, It includes a marking piston, a marking push rod and a marking wheel; the marking piston is slidably connected to the first outer detector and is located between the first outer seal and the second outer seal. One end of the marking piston is communicated with the sealed chamber formed by the outer detector, the MPP power corrugated pipe, the first outer seal and the second outer seal. The other end of the marking piston is in inclined surface sliding connection with the marking push rod, and the other end of the marking push rod is connected to the marking wheel and can drive the marking wheel to move until it contacts the outer surface of the MPP power corrugated pipe.

6. The MPP power corrugated pipe production and detection system according to claim 5, wherein, It includes a marking connecting rod and a marking torsion spring; one end of the marking connecting rod is rotatably connected to the marking push rod through the marking torsion spring, and the other end of the marking connecting rod is rotatably connected to the marking wheel; the marking torsion spring drives the marking connecting rod to rotate relative to the marking push rod until the marking wheel is away from the outer surface of the MPP power corrugated pipe.

7. A production detection method for MPP power corrugated pipes, characterized in that, The production and detection of MPP power corrugated pipes are carried out by using the MPP power corrugated pipe production and detection system described in any one of claims 1-6, specifically including the following steps: Step S1, feeding: Insert the internal detection body into the interior of the MPP power corrugated pipe; Step S2, sealing: Control the internal seal to expand and make sealing contact with the inner surface of the MPP power corrugated pipe, forming an inflation chamber between the MPP power corrugated pipe and the internal detection body; Step S3, detection: Control the inflation component to fill the inflation chamber with pressurized gas, increase the internal pressure of a local area in the MPP power corrugated pipe, and perform detection according to the pressure change; Step S4, moving: After the detection in step S3 is completed, release the pressurized gas in the inflation chamber, control the internal seal to contract, and adjust the position of the internal seal inside the MPP power corrugated pipe; Step S5, cyclic detection: Repeat steps S1-S4 to perform sectional detection on the MPP power corrugated pipe.

Images