Anti-blocking convenient backwashing device for pressure measuring device

Abstract

The invention relates to the related field of detection technologies, in particular to an anti-clogging convenient backwashing device for a pressure measuring device. By arranging a cleaning box, when a connecting pipeline is clogged, a rotating handle is adjusted, and in the moving process, clogging objects are crushed by crushing teeth at the bottom of a connecting bottom plate; when the hydraulic telescopic cylinder moves into the connecting pipeline, the hydraulic telescopic cylinder and the motor are started, the dredging drill bit conducts dredging treatment on the interior of the connecting pipeline, after dredging is completed, the control box controls the first needle valve to be opened and controls the second needle valve to be closed, the flushing box flushes the connecting pipeline, and meanwhile the pressure measuring device can be protected; after flushing is completed, the first needle valve is restored to be closed, and the second needle valve is opened, through the structural design, back flushing dredging can be effectively conducted on the connecting pipeline, and stable operation of the pressure measuring device is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the field related to detection technology, and in particular to an anti-clogging and convenient backwashing device for a pressure measuring device. Background Art

[0002] The parameters of the turbine, including the net water head of the unit (the volute inlet and tailwater pipe outlet pressures are included in the calculation), the unit flow (volute differential pressure method) and the unit's stability parameter - pressure pulsation are all measured and calculated through a pressure measuring tube (generally a φ32 stainless steel tube).

[0003] In actual projects, the water flow in the pressure tube is very small, especially after the unit is shut down, the water flow in the pressure tube is still, and due to the deposition of silt in the water, the pressure tube will be blocked over time. The silt cannot be cleaned during the non-maintenance period of the unit. The silt in the pressure tube can only be cleared when the volute / tailwater pipe is drained during the unit maintenance; on the other hand, the pressure tube is long and generally tortuous. Once a lot of silt is deposited, it is extremely difficult to remove the silt, and sometimes the pipeline is completely blocked. The pressure tube is completely buried in the concrete. After the pressure tube is completely blocked, it cannot be replaced and can only be discarded. The corresponding measurement parameters of the pressure tube will never be obtained again during the entire cycle of the power plant (unless the concrete is blasted, the pressure tube is rearranged, and the concrete is re-poured). The operating status of the unit cannot be understood in time, which brings hidden dangers to the safe and stable operation of the unit. In view of the above problems, a convenient backwashing device for anti-blocking of the pressure measuring device is designed. Summary of the invention

[0004] The object of the present invention is to provide a convenient backwashing device for preventing blockage of a pressure measuring device, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a convenient backwashing device for preventing blockage of a pressure measuring device, comprising a pressure end to be measured, a connecting pipe, a pressure measuring device, a control box, a first needle valve, a second needle valve, a cleaning box and a flushing pipe, wherein the two ends of the connecting pipe are respectively connected to the pressure end to be measured and the pressure measuring device, a display screen is arranged on the surface of the pressure measuring device, a control box is installed on the side of the pressure measuring device, a second needle valve is installed on the side of the connecting pipe close to the pressure measuring device, a flushing pipe is connected to the side of the second needle valve on the surface of the connecting pipe, a flushing box is connected to one end of the flushing pipe, a first needle valve is installed inside the flushing pipe, and a plurality of cleaning boxes are evenly installed on the side of the flushing pipe on the surface of the connecting pipe;

[0006] A sealing door is installed on the front of the cleaning box, a connecting plate is provided on the top of the inner cavity of the cleaning box, an adjusting screw is connected to the middle of the top of the connecting plate, the top of the adjusting screw is connected to a rotating handle above the cleaning box, a hydraulic telescopic cylinder is installed on one side of the bottom of the connecting plate, the output end of the hydraulic telescopic cylinder is connected to a motor, the output end of the motor is connected to a dredging drill through a connecting seat, a fixing block is provided on the top of the connecting seat, the bottom end of the hydraulic telescopic cylinder is connected to a connecting rod, and the bottom end of the connecting rod is connected to a connecting bottom plate inside the connecting pipe;

[0007] An installation cavity is provided inside the fixed block, a sliding rod is connected to the top of the installation cavity, a connecting block is sleeved on the surface of the sliding rod, a locking block is connected to the surface of the connecting block, a linkage rod is connected to the side of the connecting block, the linkage rod is connected to the fixed block through a rotating shaft, and a toggle rod is installed on one end of the rotating shaft outside the fixed block.

[0008] Preferably, connecting slide grooves are provided on the inner cavity walls on both sides of the cleaning box, and engaging sliders are connected to both ends of the connecting plate, and the engaging sliders are engaged and slidably connected with the connecting slide grooves.

[0009] Preferably, a plurality of crushing teeth are evenly arranged on the bottom of the connecting bottom plate.

[0010] Preferably, a sealing groove is provided at the top of the inner cavity of the connecting pipe at a position corresponding to the cleaning box, and a sealing strip is provided at the top of the connecting bottom plate, and the sealing strip is fitted and sealed in the corresponding sealing groove.

[0011] Preferably, a spring is connected between the top of the inner cavity of the installation cavity and the connecting block.

[0012] Preferably, an engaging column is provided on the side of the connection block, and an engaging groove is provided on one side of the surface of the linkage rod, and the engaging groove and the engaging column are engaged and slidably connected with each other.

[0013] Preferably, a fixing groove is provided on the surface of the output end of the motor, the engaging block is engaged and fixedly connected with the fixing groove, and one end of the engaging block is wedge-shaped.

[0014] Preferably, the inner side wall of the connection seat is provided with an insertion groove, the motor output end is plugged and connected with the insertion groove, the inner bottom of the insertion groove is provided with a limit groove, the bottom of the motor output end is installed with a limit block, and the limit block is slidably connected with the limit groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a cleaning box, when the connecting pipe is blocked, the rotating handle is adjusted, and during the movement, the crushing teeth at the bottom of the connecting bottom plate crush the blockage, and when the hydraulic telescopic cylinder moves to the inside of the connecting pipe, the hydraulic telescopic cylinder and the motor are started, so that the unblocking drill bit dredges the inside of the connecting pipe, and when the unblocking drill bit needs to be replaced, the toggle rod is adjusted to move the engaging block out of the fixing groove, so that the current unblocking drill bit can be removed from the output shaft of the motor, and then a corresponding unblocking drill bit can be replaced, and after the unblocking is completed, the hydraulic telescopic cylinder is reset, and the rotating handle is adjusted to put the hydraulic telescopic cylinder into the cleaning box, and then the control box controls the first needle valve to open and the second needle valve to close, and the connecting pipe is flushed by the flushing box, and the pressure measuring device can be protected at the same time, and the first needle valve is restored to the closed state and the second needle valve is restored to the open state after the flushing is completed. Through the design of the above structure, the connecting pipe can be effectively backwashed and unblocked, and the stable operation of the pressure measuring device can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the cleaning box structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the fixed block structure of the present invention.

[0019] In the figure: 1. The pressure end to be measured; 2. The connecting pipe; 3. The flushing box; 4. The pressure measuring device; 5. The control box; 6. The first needle valve; 7. The second needle valve; 8. The cleaning box; 9. The sealing door; 10. The flushing pipe; 11. The connecting plate; 12. The adjusting screw; 13. The rotating handle; 14. The hydraulic telescopic cylinder; 15. The motor; 16. The connecting seat; 17. The fixing block; 18. The dredging drill; 19. The connecting rod; 2 0. Connecting bottom plate; 21. Crushing teeth; 22. Sealing strip; 23. Sealing groove; 24. Connecting slide groove; 25. Engaging slider; 26. Mounting cavity; 27. Sliding rod; 28. Connecting block; 29. ​​Spring; 30. Linking rod; 31. Rotating shaft; 32. Toggle rod; 33. Engaging groove; 34. Engaging column; 35. Engaging block; 36. Inserting groove; 37. Fixing groove; 38. Limiting groove; 39. Limiting block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-3 The present invention provides a technical solution: a convenient backwashing device for preventing blockage of a pressure measuring device, comprising a pressure end 1 to be measured, a connecting pipe 2, a pressure measuring device 4, a control box 5, a first needle valve 6, a second needle valve 7, a cleaning box 8 and a flushing pipe 10, wherein the two ends of the connecting pipe 2 are respectively connected to the pressure end 1 to be measured and the pressure measuring device 4, a display screen is arranged on the surface of the pressure measuring device 4, a control box 5 is installed on the side of the pressure measuring device 4, a second needle valve 7 is installed on the side of the connecting pipe 2 close to the pressure measuring device 4, a flushing pipe 10 is connected on the side of the second needle valve 7 on the surface of the connecting pipe 2, a flushing box 3 is connected to one end of the flushing pipe 10, a first needle valve 6 is installed inside the flushing pipe 10, and a plurality of cleaning boxes 8 are evenly installed on the side of the flushing pipe 10 on the surface of the connecting pipe 2;

[0024] A sealing door 9 is installed on the front of the cleaning box 8, a connecting plate 11 is arranged on the top of the inner cavity of the cleaning box 8, an adjusting screw 12 is connected to the middle of the top of the connecting plate 11, and a rotating handle 13 is connected to the top of the adjusting screw 12 above the cleaning box 8, a hydraulic telescopic cylinder 14 is installed on one side of the bottom of the connecting plate 11, an output end of the hydraulic telescopic cylinder 14 is connected to a motor 15, and an output end of the motor 15 is connected to a dredging drill 18 through a connecting seat 16, a fixing block 17 is arranged on the top of the connecting seat 16, a connecting rod 19 is connected to the bottom end of the hydraulic telescopic cylinder 14, and the bottom end of the connecting rod 19 is connected to a connecting bottom plate 20 inside the connecting pipe 2;

[0025] An installation cavity 26 is provided inside the fixed block 17, a sliding rod 27 is connected to the top of the inner cavity of the installation cavity 26, a connecting block 28 is sleeved on the surface of the sliding rod 27, a locking block 35 is connected to the surface of the connecting block 28, a linkage rod 30 is connected to the side of the connecting block 28, the linkage rod 30 is connected to the fixed block 17 through a rotating shaft 31, and a toggle rod 32 is installed on one end of the rotating shaft 31 outside the fixed block 17.

[0026] Furthermore, connecting grooves 24 are provided on the inner cavity walls on both sides of the cleaning box 8 , and engaging sliders 25 are connected to both ends of the connecting plate 11 , and the engaging sliders 25 are engaged and slidably connected with the connecting grooves 24 .

[0027] Furthermore, a plurality of crushing teeth 21 are evenly arranged at the bottom of the connecting bottom plate 20.

[0028] Furthermore, a sealing groove 23 is provided at the top of the inner cavity of the connecting pipe 2 at the corresponding position of the cleaning box 8, and a sealing strip 22 is provided at the top of the connecting bottom plate 20, and the sealing strip 22 is fitted and sealed with the corresponding sealing groove 23.

[0029] Furthermore, a spring 29 is connected between the top of the inner cavity of the installation cavity 26 and the connecting block 28.

[0030] Furthermore, a fitting column 34 is provided on the side of the connecting block 28, and a fitting groove 33 is provided on one side of the surface of the linkage rod 30, and the fitting groove 33 and the fitting column 34 are fitted and slidably connected.

[0031] Furthermore, a fixing groove 37 is provided on the surface of the output end of the motor 15 , and the engaging block 35 is engaged and fixedly connected with the fixing groove 37 , and one end of the engaging block 35 is wedge-shaped.

[0032] Furthermore, an insertion groove 36 is provided on the inner side wall of the connecting seat 16, and the output end of the motor 15 is plugged into the insertion groove 36. A limiting groove 38 is provided at the bottom of the inner cavity of the insertion groove 36, and a limiting block 39 is installed at the bottom of the output end of the motor 15. The limiting block 39 is slidably connected with the limiting groove 38.

[0033] The present invention provides a cleaning box 8. When the connecting pipe 2 is blocked, the rotating handle 13 is adjusted. During the movement, the crushing teeth 21 at the bottom of the connecting bottom plate 20 crush the blockage. When the hydraulic telescopic cylinder 14 moves into the connecting pipe 2, the hydraulic telescopic cylinder 14 and the motor 15 are started to make the dredging drill 18 dredge the inside of the connecting pipe 2. When the dredging drill 18 needs to be replaced, the toggle rod 32 is adjusted to make the engaging block 35 move out of the fixing groove 37, so that the current dredging drill 18 can be removed from the output shaft of the motor 15. Then replace the appropriate unblocking drill bit 18. After the unblocking is completed, the hydraulic telescopic cylinder 14 is reset, and then the rotating handle 13 is adjusted to put the hydraulic telescopic cylinder 14 into the cleaning box 8. Then the first needle valve 6 is controlled to open and the second needle valve 7 is closed through the control box 4. The connecting pipe 2 is flushed by the flushing box 3, and the pressure measuring device 4 can be protected at the same time. After the flushing is completed, the first needle valve 6 is restored to the closed state and the second needle valve 7 is opened. Through the design of the above structure, the connecting pipe 2 can be effectively backwashed and unblocked, and the stable operation of the pressure measuring device 4 is effectively guaranteed.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient backwashing device for preventing blockage of a pressure measuring device, comprising a pressure end to be measured (1), a connecting pipe (2), a pressure measuring device (4), a control box (5), a first needle valve (6), a second needle valve (7), a cleaning box (8) and a flushing pipe (10), characterized in that: The two ends of the connecting pipe (2) are respectively connected to the pressure end to be measured (1) and the pressure measuring device (4); a display screen is arranged on the surface of the pressure measuring device (4); a control box (5) is installed on the side of the pressure measuring device (4); a second needle valve (7) is installed on the side of the connecting pipe (2) close to the pressure measuring device (4); a flushing pipe (10) is connected to the surface of the connecting pipe (2) on the side of the second needle valve (7); a flushing box (3) is connected to one end of the flushing pipe (10); a first needle valve (6) is installed in the flushing pipe (10); and a plurality of cleaning boxes (8) are evenly installed on the side of the flushing pipe (10) on the surface of the connecting pipe (2); The front of the cleaning box (8) is provided with a sealing door (9); the top of the inner cavity of the cleaning box (8) is provided with a connecting plate (11); the middle of the top of the connecting plate (11) is connected with an adjusting screw (12); the top of the adjusting screw (12) is connected with a rotating handle (13) above the cleaning box (8); a hydraulic telescopic cylinder (14) is installed on one side of the bottom of the connecting plate (11); the output end of the hydraulic telescopic cylinder (14) is connected with a motor (15); the output end of the motor (15) is connected with a dredging drill (18) through a connecting seat (16); a fixing block (17) is provided at the top of the connecting seat (16); the bottom end of the hydraulic telescopic cylinder (14) is connected with a connecting rod (19); the bottom end of the connecting rod (19) is connected with a connecting bottom plate (20) inside the connecting pipe (2); The fixed block (17) is provided with an installation cavity (26) inside, the top of the inner cavity of the installation cavity (26) is connected with a sliding rod (27), the surface of the sliding rod (27) is sleeved with a connecting block (28), the surface of the connecting block (28) is connected with a locking block (35), the side of the connecting block (28) is connected with a linkage rod (30), the linkage rod (30) is connected to the fixed block (17) through a rotating shaft (31), and one end of the rotating shaft (31) is provided with a toggle rod (32) outside the fixed block (17).

2. The anti-clogging and convenient backwashing device for a pressure measuring device according to claim 1, characterized in that: The inner cavity walls on both sides of the cleaning box (8) are provided with connecting grooves (24), and the two ends of the connecting plate (11) are connected with embedded sliding blocks (25), and the embedded sliding blocks (25) are embedded and slidably connected with the connecting grooves (24).

3. The anti-clogging and convenient backwashing device for a pressure measuring device according to claim 1, characterized in that: A plurality of crushing teeth (21) are evenly arranged at the bottom of the connecting bottom plate (20).

4. The anti-clogging and convenient backwashing device for a pressure measuring device according to claim 1, characterized in that: A sealing groove (23) is provided at the top of the inner cavity of the connecting pipe (2) at a position corresponding to the cleaning box (8), and a sealing strip (22) is provided at the top of the connecting bottom plate (20), and the sealing strip (22) is fitted and sealed in the corresponding sealing groove (23).

5. The anti-clogging and convenient backwashing device for a pressure measuring device according to claim 1, characterized in that: A spring (29) is connected between the inner cavity top of the installation cavity (26) and the connecting block (28).

6. The anti-clogging and convenient backwashing device for a pressure measuring device according to claim 1, characterized in that: The side of the connection block (28) is provided with an embedding column (34), and one side of the surface of the linkage rod (30) is provided with an embedding groove (33), and the embedding groove (33) and the embedding column (34) are embedded and slidably connected.

7. The anti-clogging and convenient backwashing device for a pressure measuring device according to claim 1, characterized in that: A fixing groove (37) is provided on the output end surface of the motor (15), the clamping block (35) is engaged and fixedly connected with the fixing groove (37), and one end of the clamping block (35) is wedge-shaped.

8. The anti-clogging and convenient backwashing device for a pressure measuring device according to claim 1, characterized in that: An inserting groove (36) is provided on the inner side wall of the connecting seat (16), and the output end of the motor (15) is plugged and connected with the inserting groove (36). A limiting groove (38) is provided at the bottom of the inner cavity of the inserting groove (36), and a limiting block (39) is installed at the bottom of the output end of the motor (15), and the limiting block (39) is slidably connected with the limiting groove (38).

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