A device for converting a straight pipe into a spiral pipe

Abstract

The present invention discloses a device for converting a straight-through pipe into a spiral pipe, comprising: an outer pipe, which is a straight pipe and has a limiting notch on its barrel, and a limiting ring is provided in one end of the outer pipe away from the limiting notch; a conversion component, which is coaxially rotatable and arranged in the outer pipe; an inner pipe with spiral blades, which are respectively arranged in the conversion component; the conversion component is composed of a first pipe, a second pipe, a third pipe, a fourth pipe and a fifth pipe that are coaxially rotated in series, the first pipe is fixedly connected to the outer pipe, and the outer end of the fifth pipe is axially limited by a limiting ring; the second pipe, the third pipe and the fourth pipe are rotatably connected to the outer pipe; a pin is provided on the second pipe that cooperates with the limiting notch, and the inner pipe with the spiral blades is switched from a spiral pipe state to a through state by toggling the pin.

Description

Technical Field

[0001] The invention relates to a straight-through pipeline and a spiral pipeline conversion device, belonging to the technical field of fluid conveying devices. Background Art

[0002] During liquid transportation, sudden changes in flow rate within pipelines due to factors such as valve opening and closing, or sudden pump starts and stops, can cause significant pressure fluctuations (water hammer), which can easily damage valves, pumps, and other equipment. This is known as the hydraulic water hammer effect. Common measures to prevent water hammer include using reduced-voltage starting, variable-frequency speed control, and series resistor starting with an automatic controller. Operational measures can also be employed, such as using a PLC to slowly open valves during startup until the system operating pressure is reached. Water hammer can also be eliminated by installing devices such as water hammer arresters and pressure reducing valves. Improved pipeline design and the use of air tanks can also be used to mitigate water hammer. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for converting a straight pipe into a spiral pipe, so as to solve the defect of existing pipes that, when transporting liquid, the liquid flow rate in the pipe changes suddenly, causing large pressure fluctuations and damaging equipment such as valves and water pumps.

[0004] A device for converting a straight pipe into a spiral pipe, comprising:

[0005] The outer tube is a straight tube with a limiting notch provided on the outer tube, and a limiting ring is provided in one end of the outer tube away from the limiting notch;

[0006] A conversion assembly, the conversion assembly being coaxially rotatably disposed within the outer tube;

[0007] Inner tubes with spiral blades, wherein the inner tubes with spiral blades are respectively arranged in the conversion components;

[0008] The conversion assembly is composed of a tube 1, a tube 2, a tube 3, a tube 4 and a tube 5 which rotate in series coaxially. The tube 1 is fixedly connected to the outer tube, and the outer end of the tube 5 is axially limited by a limiting ring; the tubes 2, 3 and 4 are rotatably connected to the outer tube.

[0009] The second tube is provided with a pin that cooperates with the limiting slot. By moving the pin, the inner tube with spiral blades can be switched from the spiral pipe state to the through state.

[0010] Furthermore, gear one and gear three are radially distributed in the middle of the cylindrical surfaces of the barrel two and the barrel four, so the end face of the barrel one is provided with end tooth one meshing with gear one, and the two ends of the barrel two are respectively provided with end tooth three and end tooth four meshing with gear one and gear three, gear two is provided in the barrel three, and the end faces of the barrel two and the barrel four close to the barrel three are provided with end tooth two and end tooth four meshing with gear two, and the end face of the barrel five close to the barrel four is provided with end tooth five meshing with gear three.

[0011] Furthermore, the cylinder 1 is provided with a limit pin 1, the cylinder 3 is provided with a limit pin 2 and a limit pin 3, and the cylinder 5 is provided with a limit pin 4;

[0012] The cylindrical surface of the second cylinder is provided with an annular groove 1 adapted to the first and second limit pins, and the upper surface of the fourth cylinder is provided with an annular groove 2 adapted to the third and fourth limit pins.

[0013] Furthermore, the end of the cylinder 1 provided with the end tooth 1 is also provided with a radial hole, and the radial hole is used to install a limit pin 1.

[0014] Furthermore, the inner ring surface 2 of the tube 1 inside the tube 1 is coaxially fixed with the inner tube 1, the outer end of the inner tube 1 is flush with the outer end of the tube 1, and the toothless end of the tube 2 is slidably arranged on the toothed end of the tube 1, and between the inner ring surface 1 of the tube 1 inside the tube 1 and the outer ring surface of the end of the inner tube 1.

[0015] Furthermore, an inner tube three is provided in the tube three, and the toothed end of the tube two is slidably provided at one end of the tube three, and between the inner annular surface two of the tube three and the outer annular surface at one end of the inner tube three.

[0016] Furthermore, the end teeth of the tube four are slidably arranged inside the other end of the tube three, and between the inner annular surface 1 of the tube three and the outer annular surface of the other end of the inner tube three.

[0017] Furthermore, an inner tube five is provided in the tube five, and the endless teeth of the tube four are slidably arranged in the toothed end of the tube five, and between the inner annular surface one of the tube five and the outer annular surface of the tube end of the inner tube five.

[0018] Furthermore, flanges are provided at both ends of the outer tube.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the present invention directly connects the conversion component in series in the pipeline. When the pipeline is working normally, in order to reduce resistance, it is adjusted to a straight-through state. When the pump is started or shut down, it is adjusted to a spiral pipeline state, which changes the liquid flow state and increases the pipe resistance. It can effectively reduce or prevent the formation of water hammer and avoid damage to equipment such as valves and water pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the straight-through state of the pipeline of the present invention;

[0021] Figure 2 This is a straight-through end view of the pipeline of the present invention;

[0022] Figure 3 This is a diagram showing a spiral state inside the tube of the present invention;

[0023] Figure 4 This is a diagram showing a spiral state inside the tube of the present invention;

[0024] Figure 5 This is a view of the outer tube of the present invention;

[0025] Figure 6 This is a view of the present invention after removing the outer tube;

[0026] Figure 7 It is a full cross-sectional view of the present invention;

[0027] Figure 8 It is an exploded view of the present invention;

[0028] Figure 9 This is a diagram of the inner tube of a cylinder with spiral blades according to the present invention;

[0029] Figure 10 It is a diagram of the present invention;

[0030] Figure 11 The inner tube with spiral blades of the present invention;

[0031] Figure 12 This is a diagram of the inner tube of the second tube with spiral blades of the present invention;

[0032] Figure 13 This is the second diagram of the present invention;

[0033] Figure 14 It is the inner tube of the present invention with three spiral blades;

[0034] Figure 15 This is the third diagram of the present invention

[0035] Figure 16 This is the inner tube diagram of the four-band spiral blade tube of the present invention

[0036] Figure 17 This is a diagram of the inner tube of the five-tube spiral blade of the present invention;

[0037] In the figure: 1. Outer tube; 11. Limiting notch; 12. Left flange; 13. Right flange; 14. Limiting ring; 2. Conversion assembly; 21. Cylinder 1; 211. End tooth 1; 212. Inner ring surface 1 of cylinder 1; 213. Inner ring surface 2 of cylinder 1; 214. Limiting pin 1; 22. Cylinder 2; 221. End tooth 2; 222. Ring groove 1; 223. Inner ring surface of cylinder 2; 224. Detent pin; 23. Cylinder 3; 231. End tooth 3; 232. End tooth 4; 233. Inner ring surface 1 of cylinder 3; 234. Inner ring surface 2 of cylinder 3; 235 Limit pin two; 236, limit pin three; 24, cylinder four; 241, end tooth four; 242, ring groove two; 243, inner ring surface of cylinder four; 25, cylinder five; 251, end tooth five; 252, inner ring surface one of cylinder five; 253, inner ring surface two of cylinder five; 254, limit pin four; 31, pin shaft one; 32, gear one; 33, pin shaft two; 34, gear two; 35, pin shaft three; 36, gear three; 4, inner tube group with spiral blades; 41, inner tube one; 411, spiral blades; 42, inner tube two; 43, inner tube three; 44, inner tube four; 45, inner tube five. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] like Figures 1-17 As shown, a device for converting a straight pipeline to a spiral pipeline is disclosed, comprising:

[0040] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 and Figure 8 , outer tube 1, the outer tube is a straight pipe, a limiting notch 11 is provided on the outer tube, a limiting ring 14 is provided inside the end of the outer tube away from the limiting notch, and flanges are provided at both ends of the outer tube 1 so that the device can be connected to other pipes.

[0041] The conversion assembly 2 is coaxially rotatable and disposed within the outer tube 1. The conversion assembly 2 is composed of several sections of cylinders that coaxially rotate in series. The conversion assembly 2 in the figure is composed of five sections of cylinders that coaxially rotate in series, namely, cylinder 1 21, cylinder 2 22, cylinder 3 23, cylinder 4 24, and cylinder 5 25. In the figure, cylinder 1 21 is fixedly connected to the outer tube 1 and is the fixed end. The other cylinders are in a rotational connection with the outer tube 1. Cylinder 5 25 is the movable end. The outer end of cylinder 5 25 is axially limited by the limit ring 14 at the end of the outer tube 1 (see Figure 6 、 Figure 7 、 Figure 8 );

[0042] Tube 21 (see attached Figure 9 、10 ), an end tooth 211 is provided at the inner end of the cylinder 21, and the cylinder 21 has a stepped inner hole. An inner tube 41 with spiral blades is coaxially fixed on the inner annular surface 213 of the cylinder, and the outer end of the inner tube 41 is flush with the outer end of the cylinder 21.

[0043] A radial hole is formed on the end of the cylinder 21 where the end teeth are provided, and a limiting pin 214 is provided in the hole.

[0044] Tube 22 (see attached Figure 12 、 13 ), an end tooth 221 is provided at one end of the second cylinder 22, and a positioning ring groove 222 is provided at both ends of the outer cylindrical surface of the second cylinder 22.

[0045] Three pin shafts 31 are evenly distributed radially in the middle of the outer cylindrical surface of the second cylinder 22, and a gear 32 is rotatably provided on each pin shaft.

[0046] A pin 224 is radially fixedly provided at the middle position of the outer cylindrical surface of the second tube 22. The pin 224 extends out of the limiting notch 11 on the outer tube body.

[0047] Tube 3 23 (see attached Figure 14 、 15 ), end teeth are provided at both ends of the cylinder three 23, namely end tooth three 231 and end tooth four 232.

[0048] Three pin shafts 2 33 are evenly distributed radially in the middle of the cylinder 3 23 , and a gear 2 34 is rotatably mounted on each pin shaft 2 .

[0049] An inner tube 3 43 is coaxially fixedly provided within the inner annular surface 234 of the tube 3.

[0050] Radial holes are respectively formed at both ends of the cylinder 3 23 , and a second limiting pin 235 and a third limiting pin 236 are respectively provided in the holes.

[0051] Tube 4 24 (see attached Figure 16 ), the structure of the fourth tube 24 is almost the same as that of the second tube 22, except that the detent pin 224 is not provided on the outside of the fourth tube 24. (Description omitted)

[0052] Tube 5 25 (see attached Figure 17 ), the structure of tube 5 25 is the same as tube 1 21. (Description omitted)

[0053] The cylinders of the conversion assembly 2, namely cylinder 1 21, cylinder 2 22, cylinder 3 23, cylinder 4 24, and cylinder 5 25, are coaxially connected in series and rotated in sequence (see attached Figure 6 、 7 , 8):

[0054] The fifth tube 25 is rotatably disposed at the left end of the outer tube 1. The left end of the fifth tube 25 is axially limited by the limiting ring 14 on the outer tube 1.

[0055] The inner tube with spiral blades is respectively arranged in the conversion assembly; see attached Figure 6 、 Figure 7 、 Figure 8 In each section of the cylinder, an inner tube with spiral blades is coaxially fixed. In the figure, they are: inner tube 1 41 is fixed in cylinder 1 21; inner tube 2 42 is fixed in cylinder 22; inner tube 3 43 is fixed in cylinder 3 23; inner tube 44 is fixed in cylinder 4 24; and inner tube 5 45 is fixed in cylinder 5 25.

[0056] The inner tubes of each section have the same size. Take inner tube 41 as an example (see Figure 11 ), the outer portion of the inner tube 1 41 is a thin-walled short tube, in which a spiral blade 411 is fixed, and the two ends of the spiral blade 411 are flush with the two ends of the thin-walled short tube;

[0057] The second tube is provided with a pin that cooperates with the limiting slot, and the inner tube with spiral blades is switched from a spiral pipe state to a through state by moving the pin.

[0058] like Figure 9 and Figure 10 As shown, gear one 32 and gear three 36 are radially evenly distributed in the middle position of the cylindrical surface of the cylinder two 22 and the cylinder four 24, so the end face of the cylinder one is provided with end tooth one 211 meshing with gear one, and the two ends of the cylinder three 23 are respectively provided with end tooth three 231 and end tooth four 232 meshing with gear one and gear three, and the cylinder three is provided with gear two 34, and the end faces of the cylinder two and the cylinder four close to the cylinder three are provided with end tooth two 221 and end tooth four 241 meshing with gear two, and the end face of the cylinder five 25 close to the cylinder four 24 is provided with end tooth five 251 meshing with gear three 36.

[0059] In this embodiment, the inner ring surface 213 of the first tube in the first tube 21 is coaxially fixed with the inner tube 41, and the outer end of the inner tube 41 is flush with the outer end of the first tube 21. The toothless end of the second tube 22 is slidably arranged on the toothed end of the first tube 21, and between the inner ring surface 212 of the first tube in the first tube 21 and the outer ring surface of the end of the inner tube 41; the inner tube 3 43 is arranged in the third tube 23, and the toothed end of the second tube 22 is slidably arranged on one end of the third tube 23, and is arranged on the third tube 23. 3 between the inner ring surface 1 233 of the tube three and the outer ring surface of one end of the inner tube three 43, the end teeth of the tube four 24 are slidably arranged in the other end of the tube three 23, and between the inner ring surface 1 233 of the tube three 23 and the outer ring surface of the other end of the inner tube three 43. The inner tube five 45 is provided in the tube five, and the endless teeth of the tube four 24 are slidably arranged in the toothed end of the tube five 25, and between the inner ring surface 1 252 of the tube five 25 and the outer ring surface of the tube end of the inner tube five 45. The specific installation is as follows:

[0060] One end of the tube 4 24 without end teeth is slidably disposed between the inner ring surface 1 252 of the tube 5 at the right end of the tube 5 25 and the outer ring surface of the right end of the inner tube 5 45; one end of the tube 4 24 with end teeth is slidably disposed between the inner ring surface 1 of the tube 3 at the left end of the tube 3 23 and the outer ring surface of the left end of the inner tube 3 43;

[0061] The fourth limiting pin 254 is slidably mounted in the second annular groove 242 of the fourth cylinder 24 as an axial limit, and the third limiting pin 236 is slidably mounted in the second annular groove 242 of the fourth cylinder 24 as an axial limit;

[0062] Gear 3 36 is meshed with both end tooth 5 251 and end tooth 4 232. End tooth 4 241 at the right end of cylinder 4 24 is meshed with gear 2 34 provided in cylinder 3 23;

[0063] The third tube 23 is rotatably disposed in the outer tube 1 and is located at the right end of the fourth tube 24;

[0064] The left end of the second tube 22 is slidably disposed between the inner ring surface 1 233 of the third tube 23 at the right end and the outer ring surface of the right end of the inner tube 43; the right end of the second tube 22 is slidably disposed between the inner ring surface 1 212 of the first tube 21 at the left end and the outer ring surface of the left end of the inner tube 41;

[0065] The second limiting pin 235 is slidably mounted in the annular groove 222 of the second cylinder 22 as an axial limit; the first limiting pin 214 is slidably mounted in the annular groove 222 of the second cylinder 22 as an axial limit.

[0066] Gear 1 32 is meshed with end tooth 3 231 and end tooth 1 211 at the same time. End tooth 221 at the left end of cylinder 22 is meshed with gear 2 34 provided in cylinder 3 23 .

[0067] The pin 224 fixedly arranged at the middle of the outer cylindrical surface of the second tube 22 extends out of the limiting notch 11 on the outer tube body.

[0068] The first tube 21 is arranged at the right end of the second tube 22. The first tube 21 is fixedly connected to the outer tube 1 and serves as a fixed end.

[0069] The inner tubes with spiral blades, i.e., inner tube one 41, inner tube two 42, inner tube three 43, inner tube four 44, and inner tube five 45, are coaxially connected end to end in a sliding manner.

[0070] Working principle:

[0071] When the detent pin 224 is in the attached Figure 1 In the state shown, the axial positions of the spiral blades in each inner tube coincide (see attached Figure 2 ), the entire inner hole of the pipe is axially connected (except for the area where the spiral blades overlap).

[0072] The detent pin 224 is attached Figure 1 The status shown is dialed to the attached Figure 3As shown in the figure, under the action of the gear assembly 3 and the end teeth, except for the inner tube 1 41 in the cylinder 1 21, which remains in place, the other inner tubes, namely the inner tube 2 42, the inner tube 3 43, the inner tube 44, and the inner tube 5 45, rotate at different angles accordingly, and the spiral blades in the inner tubes move to a new state. (In this example, the inner tube 1 41 remains in place, the inner tube 2 42 rotates 72 degrees, the inner tube 3 43 rotates twice the 72 degrees, the inner tube 44 rotates three times the 72 degrees, and the inner tube 5 45 rotates four times the 72 degrees.) The first ones are connected in sequence to form a complete spiral pipeline. (See the attached axial view for an example.) Figure 4 ).

[0073] The pin 224 is reversely pushed back to its original position, and each inner tube is reset, so that the inner hole of the entire pipeline returns to the axial through state.

[0074] When the pipeline is in an axially through state, the axial resistance is small. When it is in a spiral state, the resistance increases, the liquid flows out in a spiral, and the impact is reduced.

[0075] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for converting a straight pipe into a spiral pipe, characterized in that: include: The outer tube is a straight tube with a limiting notch provided on the outer tube, and a limiting ring is provided in one end of the outer tube away from the limiting notch; A conversion assembly, the conversion assembly being coaxially rotatably disposed within the outer tube; Inner tubes with spiral blades, wherein the inner tubes with spiral blades are respectively arranged in the conversion components; The conversion assembly is composed of a tube 1, a tube 2, a tube 3, a tube 4 and a tube 5 which rotate in series coaxially. The tube 1 is fixedly connected to the outer tube, and the outer end of the tube 5 is axially limited by a limiting ring; the tubes 2, 3 and 4 are rotatably connected to the outer tube. The second tube is provided with a pin that cooperates with the limiting slot. By moving the pin, the inner tube with spiral blades can be switched from the spiral pipe state to the through state.

2. The straight pipe and spiral pipe conversion device according to claim 1, characterized in that: Gear one and gear three are radially evenly distributed in the middle of the cylindrical surfaces of tube two and tube four, so the end face of tube one is provided with end tooth one meshing with gear one, and the two ends of tube two are provided with end tooth three and end tooth four meshing with gear one and gear three, respectively. Gear two is provided in tube three, and the end faces of tube two and tube four close to tube three are provided with end tooth two and end tooth four meshing with gear two, respectively. The end face of tube five close to tube four is provided with end tooth five meshing with gear three.

3. The straight pipe and spiral pipe conversion device according to claim 1, characterized in that: The first cylinder is provided with a limit pin 1, the third cylinder is provided with a limit pin 2 and a limit pin 3, and the fifth cylinder is provided with a limit pin 4; The cylindrical surface of the second cylinder is provided with a ring groove 1 adapted to the first and second limit pins, and the upper surface of the fourth cylinder is provided with a ring groove 2 adapted to the third and fourth limit pins.

4. The device for converting a straight pipe into a spiral pipe according to claim 1, characterized in that: The end of the cylinder with the end tooth is also provided with a radial hole, and the radial hole is used to install a limit pin.

5. The straight pipe and spiral pipe conversion device according to claim 1, characterized in that: The inner ring surface 2 of the tube 1 inside the tube 1 is coaxially fixed with the inner tube 1, the outer end of the inner tube 1 is flush with the outer end of the tube 1, and the toothless end of the tube 2 is slidably arranged on the toothed end of the tube 1, and between the inner ring surface 1 of the tube 1 inside the tube 1 and the outer ring surface of the end of the inner tube 1.

6. The device for converting a straight pipe into a spiral pipe according to claim 1, characterized in that: An inner tube three is provided in the tube three, and the toothed end of the tube two is slidably arranged at one end of the tube three, and between the inner annular surface two of the tube three and the outer annular surface of one end of the inner tube three.

7. The device for converting a straight pipe into a spiral pipe according to claim 6, characterized in that: The end teeth of the tube four are slidably arranged in the other end of the tube three, and between the inner ring surface one of the tube three and the outer ring surface of the other end of the inner tube three.

8. The device for converting a straight pipe into a spiral pipe according to claim 1, characterized in that: An inner tube 5 is provided in the tube 5, and the endless teeth of the tube 4 are slidably arranged in the toothed end of the tube 5, and between the inner annular surface 1 of the tube 5 and the outer annular surface of the tube end of the inner tube 5.

9. The device for converting a straight pipe into a spiral pipe according to claim 1, characterized in that: Flanges are respectively provided at both ends of the outer tube.

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