A pressure sensor for a multi-parameter intelligent control system

Abstract

The present invention discloses a pressure sensor for a multi-parameter intelligent control system, which relates to the technical field of pressure sensors and includes a pressure sensor body. A display meter for displaying pressure data is fixedly installed on the top surface of the pressure sensor body; a guiding pipe is threadedly connected to the bottom surface of the pressure sensor body and is used for connecting with an external pipe. When the water pressure is relatively large, the silicon wafer remains in a planar state; when the water pressure is relatively small, the silicon wafer is pulled by a rope to make it bend and generate an arc, improving the sensitivity. The second driving motor adjusts the position of the threaded ring through a lead screw system to control the movement of the support block and the connecting rod, realizing the adjustment of the arc of the silicon wafer. The first driving motor drives the winding roller to rotate unidirectionally through a synchronous pulley and synchronous belt system to ensure the accuracy of the rope winding, thereby precisely controlling the arc of the silicon wafer, further monitoring smaller water pressures, achieving the adjustment effect of the arc of the silicon wafer, and facilitating the staff to use the pressure sensor body on the pipe.

Description

Technical Field

[0001] The present invention relates to the field of pressure sensors, and specifically to a pressure sensor for a multi-parameter intelligent control system. Background Art

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert the pressure signals into available output electrical signals according to certain rules. A pressure sensor usually consists of a pressure-sensitive element and a signal processing unit. According to different types of test pressures, a piezoresistive pressure sensor is a kind of pressure sensor. A piezoresistive pressure sensor is a sensor made by using the piezoresistive effect of single-crystal silicon material and integrated circuit technology. Its working principle is that when a single-crystal silicon material is subjected to a force, its resistivity changes, and an electrical signal proportional to the change in force can be obtained through a measurement circuit. The substrate of this sensor can directly serve as a measurement and sensing element, and the diffused resistors are connected in a bridge form within the substrate. When the substrate is deformed by an external force, the resistance values of each resistor will change, and the bridge will generate a corresponding unbalanced output.

[0003] After retrieval, it is found that there are problems with the pressure sensors in the prior art. Since the flow rate of water in a pipeline is constantly changing, and in the case of the same pipeline diameter, the greater the flow rate in the pipeline, the smaller the water pressure, and vice versa. Generally, a piezoresistive pressure sensor is used by workers to monitor the water pressure. The silicon wafer inside the piezoresistive pressure sensor is in a flat state under normal conditions. When the water in the pipeline contacts the silicon wafer, the silicon wafer will bend and deform, causing its resistance to change and then cooperating with the circuit of the pressure sensor to output water pressure data. However, in the case of a relatively fast flow rate in the pipeline, the water pressure is small, and the sensitivity of the silicon wafer in the flat state is limited. The water pressure in the pipeline may be less than the minimum threshold that the silicon wafer in the flat state inside the pressure sensor can measure. At this time, the pressure sensor is difficult to measure the water pressure in the pipeline, resulting in inaccurate monitoring results. And when water flows in the pipeline, eddies may be formed due to the bending of the pipeline and other factors. The eddies will irregularly impact the silicon wafer on the pressure sensor, further reducing the accuracy of the monitoring result of the pressure sensor for the water pressure, affecting the workers' use of the pressure sensor to monitor the water pressure in the pipeline. Therefore, based on the above retrieval and in combination with the prior art, the present invention proposes a pressure sensor for a multi-parameter intelligent control system to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a pressure sensor for a multi-parameter intelligent control system, which has the advantages of improving the reliability of measurement results, enhancing flexibility, adapting to different water pressure and flow rate conditions, and dynamically adjusting the sensitivity of the pressure sensor by adjusting the curvature of the silicon wafer, so as to solve the problems proposed in the above background technology that the water pressure in the pipeline may be less than the minimum threshold that the silicon wafer can measure in the flat state inside the pressure sensor, resulting in inaccurate monitoring results, and the eddy current in the pipeline will irregularly impact the silicon wafer on the pressure sensor, further reducing the accuracy of the monitoring results.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pressure sensor for a multi-parameter intelligent control system, a pressure sensor body, on the top surface of the pressure sensor body, a display table for displaying pressure data is fixedly installed; a guiding pipe, the guiding pipe is threadedly connected to the bottom surface of the pressure sensor body and is used for connecting with an external pipeline, and on the inner bottom surface of the pressure sensor body, a silicon cup is fixedly installed; a silicon wafer, the silicon wafer is fixedly installed on the inner circumferential wall surface of the silicon cup and is used for reacting to water pressure; an adjusting mechanism, the adjusting mechanism is arranged on one side of the pressure sensor body and is used for adjusting the curvature of the silicon wafer, and on the outer circumferential wall surface of the display table, a stabilizing mechanism for stabilizing the pressure sensor body and the display table is arranged; the adjusting mechanism includes two fixing blocks, between the two fixing blocks, a winding roller is rotatably connected, on one side of the pressure sensor body, two connecting blocks are fixedly installed, between the two connecting blocks, a reciprocating lead screw is rotatably connected, one end of the winding roller and one end of the reciprocating lead screw are both fixedly installed with synchronous pulleys, between the two synchronous pulleys, a synchronous belt is rotatably connected, on one side of the pressure sensor body, a first driving motor for driving the synchronous pulley to rotate is installed, on the top surface of the silicon wafer, a rope is fixedly installed, on the outer circumferential wall surface of the reciprocating lead screw, a mounting plate is slidably connected, the rope passes through the pressure sensor body and is fixedly connected to the outer circumferential wall surface of the winding roller, on the top surface of the mounting plate, a support hole is opened, and the outer circumferential wall surface of the rope is movably sleeved with the inner circumferential wall surface of the support hole, and on the inner circumferential wall surface of the guiding pipe, two impellers for weakening eddy currents are rotatably connected.

[0007] Further, the adjusting mechanism further includes a ratchet wheel, which is fixedly installed on one side of the left fixed block. A mounting disc is rotatably connected to one side of the left fixed block. Two connection boxes are fixedly installed on the outer circumferential wall surface of the mounting disc. A clamping block is slidably connected inside the connection box. The clamping block is movably clamped with the ratchet wheel. Positioning blocks are fixedly installed on both sides inside the connection box. Two positioning rods are fixedly installed on the bottom surface of the clamping block. One end of the positioning rod penetrates through the positioning block and extends to the bottom surface of the positioning block. The positioning rod is elastically connected with the positioning block through a spring. A positioning box is coaxially rotatably connected to one end of the mounting disc. A connecting roller is fixedly installed between the positioning box and the mounting disc. A second driving motor is fixedly installed at one end of the winding roller. A lead screw is fixedly installed at one end of the driving shaft of the second driving motor. A threaded ring is threadedly connected to the outer circumferential wall surface of the lead screw. Two support blocks are fixedly installed on the outer circumferential wall surface of the threaded ring. A support disc is arranged inside the positioning box. Two mounting frames are fixedly installed on the outer circumferential wall surface of the support disc. A limiting block is slidably connected inside the mounting frame. A stop block is fixedly installed on one side of the limiting block. A pressing plate is fixedly installed on one side of the stop block. A plurality of clamping strips are fixedly installed on the outer circumferential wall surface of the pressing plate. A plurality of clamping grooves are formed on the inner circumferential wall surface of the positioning box. The outer circumferential wall surface of the clamping strip is movably clamped with the inner circumferential wall surface of the clamping groove. Connecting rods are rotatably connected to the top surface and the bottom surface of the support block. One ends of the two connecting rods are respectively rotatably connected to the top surface and the bottom surface of the stop block. A protective box is installed on one side of the pressure sensor body.

[0008] Further, two positioning plates are fixedly installed on one side inside the pressure sensor body. A guide wheel for guiding the rope is rotatably connected between the two positioning plates. Support shafts are fixedly installed at both ends of the guide wheel. The support shafts are rotatably connected with the positioning plates.

[0009] Further, limiting holes are formed on both sides of the connection box. Limiting blocks are fixedly installed on both sides of the clamping block. The limiting blocks are slidably connected with the limiting holes.

[0010] Further, a connecting pipe is fixedly installed on the outer circumferential wall surface of the guiding pipe. A second valve for water inlet is fixedly sleeved on the inner circumferential wall surface of the connecting pipe. A first valve for closing the guiding pipe is fixedly sleeved on the inner circumferential wall surface of the guiding pipe. A sewage discharge valve for sewage discharge is fixedly installed on the outer circumferential wall surface of the guiding pipe.

[0011] Furthermore, the stabilizing mechanism includes a support frame fixedly installed on the outer circumferential wall surface of the display meter. A fixed box is rotatably connected inside the support frame. A support plate is slidably connected inside the fixed box. A suction cup for adsorbing to the wall surface is fixedly installed on the top surface of the support plate. An air pump is installed on one side of the support plate. The air pump is communicated with the suction cup through a connecting pipe.

[0012] Furthermore, threaded columns are fixedly installed on both sides of the fixed box. One end of each threaded column penetrates through the support frame and extends to the outside of the support frame. Nuts are threadedly connected to the outer circumferential wall surfaces of the threaded columns. A plurality of connection holes are opened on both sides of the fixed box. Screws for locking the fixed box are provided on both sides of the support plate.

[0013] Furthermore, a support ring is fixedly installed at one end of the display meter. An installation ring is threadedly connected to the outer circumferential wall surface of the support ring. A transparent glass is installed on the inner circumferential wall surface of the installation ring. A heating wire for heating the transparent glass is fixedly installed on one side of the transparent glass.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. By the mutual cooperation of the pressure sensor body, the guiding pipe and the display meter, the water pressure in the pipeline can be monitored. The two impellers inside the guiding pipe will rotate under the drive of the water flow in the pipeline, and the impellers will weaken the eddy current.

[0016] By the mutual cooperation of the pressure sensor body, the silicon wafer, the second driving motor, the lead screw, the threaded ring, the support block, the connecting rod, the rotating shaft, the stop block, the limiting block, the installation frame, the pressing plate, the clamping strip, the positioning box, the clamping groove, the synchronous pulley, the winding roller, the reciprocating lead screw, the rope, the installation plate, the clamping block, the positioning rod, the positioning block, the spring and the positioning box, when the water pressure is large, the silicon wafer can maintain a flat state; when the water pressure is small, the silicon wafer is pulled by the rope to make it bend to generate an arc, improving the sensitivity. The second driving motor adjusts the position of the threaded ring through the lead screw system, and then controls the movement of the support block and the connecting rod to realize the adjustment of the arc of the silicon wafer. The first driving motor drives the winding roller to rotate unidirectionally through the synchronous pulley and synchronous belt system to ensure the accuracy of the rope winding, so as to precisely control the arc of the silicon wafer, and then monitor smaller water pressures, achieving the effect of adjusting the arc of the silicon wafer and facilitating the staff to use the pressure sensor body on the pipeline.

[0017] 2. By providing the guiding pipe, the staff connects the guiding pipe to the pipeline. Through the mutual cooperation of the support plate, the suction cup, the air pump and the connecting pipe, the suction cup can adsorb to the wall surface, thereby stabilizing the pressure sensor body and the display meter and improving the stability of the pressure sensor body and the display meter. Description of the Drawings

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 Schematic diagram of the support plate structure of the present invention;

[0020] Figure 3 Schematic diagram of the protective box structure of the present invention;

[0021] Figure 4 is Figure 3 Partial structure diagram of A in

[0022] Figure 5 Schematic diagram of the upward view of the guiding tube structure of the present invention;

[0023] Figure 6 Schematic diagram of the silicon cup structure of the present invention;

[0024] Figure 7 Schematic diagram of the fixing block structure of the present invention;

[0025] Figure 8 Schematic diagram of the connecting roller structure of the present invention;

[0026] Figure 9 Schematic diagram of the clamping block structure of the present invention;

[0027] Figure 10 Schematic diagram of the positioning plate structure of the present invention;

[0028] Figure 11 Schematic diagram of the connecting shaft structure of the present invention.

[0029] In the figure: 1. Pressure sensor body; 2. Display meter; 3. Guide pipe; 4. Radiator fins; 5. Connecting pipe; 6. Adjusting mechanism; 7. Stabilizing mechanism; 8. First valve; 9. Second valve; 10. Drain valve; 11. Fixed box; 12. Support plate; 13. Suction cup; 14. Connecting pipe; 15. Air pump; 16. Connecting hole; 17. Screw; 18. Support frame; 19. Threaded column; 20. Support ring; 21. Mounting ring; 22. Transparent glass; 23. Heating wire; 24. Fixed block; 25. Take-up roller; 26. Synchronous pulley; 27. Timing belt; 28. First driving motor; 29. Connecting block; 30. Limiting rod; 31. Reciprocating lead screw; 32. Mounting plate; 33. Support hole; 34. Rope; 35. Impeller; 36. Sealing ring; 37. Silicon cup; 38. Silicon wafer; 39. Ratchet; 40. Connecting roller; 41. Second driving motor; 42. Lead screw; 43. Threaded ring; 44. Support block; 45. Connecting rod; 46. Pressure plate; 47. Clamping strip; 48. Support disc; 49. Mounting frame; 50. Positioning box; 51. Clamping groove; 52. Limiting block; 53. Rotating shaft; 54. Mounting disc; 55. Connecting box; 56. Clamping block; 57. Limiting block; 58. Limiting hole; 59. Positioning block; 60. Positioning rod; 61. Spring; 62. Positioning plate; 63. Support shaft; 64. Guide wheel; 65. Stopper; 66. Connecting shaft; 67. Protection box. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figures 1 to 11 , a multi-parameter intelligent control system pressure sensor, including a pressure sensor body 1, a display meter 2 for displaying pressure data is fixedly installed on the top surface of the pressure sensor body 1, a guide pipe 3 is threadedly connected to the bottom surface of the pressure sensor body 1 for connecting with an external pipe, a silicon cup 37 is fixedly installed on the inner bottom surface of the pressure sensor body 1, a silicon wafer 38 is fixedly installed on the inner circumferential wall surface of the silicon cup 37 for reacting to water pressure, the silicon cup 37 can support the silicon wafer 38, and a plurality of radiator fins 4 are fixedly sleeved on the outer circumferential wall surface of the guide pipe 3 for cooling water; when water contacts the silicon wafer 38 on the pressure sensor body 1 through the guide pipe 3, the heat in the water will be transferred to the plurality of radiator fins 4, and the heat on the plurality of radiator fins 4 will dissipate into the air, thereby cooling the water in the guide pipe 3;

[0032] Adjusting mechanism 6 is provided on one side of the pressure sensor body 1 and is used to adjust the curvature of the silicon wafer 38. A stabilizing mechanism 7 for stabilizing the pressure sensor body 1 and the display table 2 is provided on the outer circumferential wall surface of the display table 2;

[0033] The adjusting mechanism 6 includes two fixing blocks 24. Both of the two fixing blocks 24 are fixedly installed on one side of the pressure sensor body 1. A winding roller 25 is rotatably connected between the two fixing blocks 24. One end of the winding roller 25 penetrates through the fixing block 24 on the right side. Two connecting blocks 29 are fixedly installed on one side of the pressure sensor body 1. A reciprocating lead screw 31 is rotatably connected between the two connecting blocks 29. One end of the reciprocating lead screw 31 penetrates through the connecting block 29 on the right side. The other end of the reciprocating lead screw 31 is rotatably connected to the connecting block 29 on the left side through a bearing. Synchronous wheels 26 are fixedly installed at one ends of the winding roller 25 and the reciprocating lead screw 31 respectively. A synchronous belt 27 is rotatably connected between the two synchronous wheels 26. A first driving motor 28 for driving the synchronous wheel 26 to rotate is installed on one side of the pressure sensor body 1 through a bracket. One end of the driving shaft of the first driving motor 28 is fixedly connected to one end of the lower synchronous wheel 26. A rope 34 is fixedly installed on the top surface of the silicon wafer 38. By pulling the rope 34, the rope 34 drives the silicon wafer 38 to bend outward to generate a curvature. The bending of the silicon wafer 38 changes the stress distribution on it and the initial state of the resistance strip, increases the response of the diaphragm to further pressure, and improves the sensitivity of the pressure sensor body 1. An installation plate 32 is slidably connected to the outer circumferential wall surface of the reciprocating lead screw 31. A connecting shaft 66 is fixedly installed on the inner circumferential wall surface of the installation plate 32. The connecting shaft 66 is slidably connected to the reciprocating lead screw 31. The movement of the installation plate 32 along the reciprocating lead screw 31 drives the connecting shaft 66 to slide on the reciprocating lead screw 31;

[0034] The rope 34 penetrates through one side of the pressure sensor body 1 and is fixedly connected to the outer circumferential wall surface of the winding roller 25. A sealing ring 36 is fixedly installed on one side of the pressure sensor body 1. The outer circumferential wall surface of the rope 34 is movably sleeved with the inner circumferential wall surface of the sealing ring 36. The sealing ring 36 can reduce the gap between the rope 34 and the pressure sensor body 1 and improve the sealing performance of the pressure sensor body 1;

[0035] The top surface of the mounting plate 32 is provided with a support hole 33. The outer circumferential wall surface of the rope 34 is movably sleeved with the inner circumferential wall surface of the support hole 33. The support hole 33 on the mounting plate 32 can provide guidance for the winding of the rope 34. The first driving motor 28 rotates to drive two synchronous pulleys 26 to rotate through the synchronous belt 27. The rotation of the synchronous pulley 26 drives the winding roller 25 and the reciprocating lead screw 31 to rotate. The winding roller 25 can wind the rope 34 to adjust the radian of the silicon wafer 38 through the pulling force. The rotation of the reciprocating lead screw 31 drives the mounting plate 32 to move back and forth on the reciprocating lead screw 31, so as to guide the winding of the rope 34 and prevent the rope 34 from winding at a certain place on the winding roller 25. The inner circumferential wall surface of the guiding pipe 3 is rotatably connected with two impellers 35 for weakening eddy currents;

[0036] The adjusting mechanism 6 further includes a ratchet wheel 39. The ratchet wheel 39 is fixedly installed on one side of the left fixing block 24. A mounting disc 54 is rotatably connected to one side of the left fixing block 24. Two connecting boxes 55 are fixedly installed on the outer circumferential wall surface of the mounting disc 54. A clamping block 56 is slidably connected inside the connecting box 55. The clamping block 56 is movably clamped with the ratchet wheel 39. Positioning blocks 59 are fixedly installed on both sides inside the connecting box 55. Two positioning rods 60 are fixedly installed on the bottom surface of the clamping block 56. One end of the positioning rod 60 penetrates through the positioning block 59 and extends to the bottom surface of the positioning block 59. The positioning rod 60 is elastically connected with the positioning block 59 through a spring 61. The spring 61 is movably sleeved on the outer circumferential wall surface of the positioning rod 60. One end of the spring 61 is fixedly connected to the bottom surface of the clamping block 56, and one end of the spring 61 is fixedly connected to the top surface of the positioning block 59. The downward movement of the clamping block 56 drives the positioning rod 60 to move downward on the positioning block 59 while compressing the spring 61. The spring 61 can provide a resetting force for the clamping block 56;

[0037] When the winding roller 25 winds the rope 34 clockwise, it will also rotate to drive the mounting disc 54 to rotate. The clockwise rotation of the mounting disc 54 drives the connecting box 55 to rotate. The clockwise rotation of the connecting box 55 causes the clamping block 56 to move downward inside the connecting box 55. When the winding roller 25 drives the mounting disc 54 to rotate to a suitable position, the clamping block 56 will continue to be clamped with the ratchet wheel 39 under the action of the spring 61 to prevent the winding roller 25 from rotating reversely, achieving the one-way rotation of the winding roller 25. One end of the mounting disc 54 is coaxially and rotatably connected with a positioning box 50. A connecting roller 40 is fixedly installed between the positioning box 50 and the mounting disc 54. The connecting roller 40 is rotatably connected with the right fixing block 24. The rotation of the mounting disc 54 drives the positioning box 50 to rotate;

[0038] One end of the rewinding roller 25 is fixedly installed with a second driving motor 41. One end of the driving shaft of the second driving motor 41 is fixedly installed with a lead screw 42. The outer wall surface of the lead screw 42 is threadedly connected with a threaded ring 43. The outer wall surface of the threaded ring 43 is fixedly installed with two support blocks 44. A support disc 48 is arranged inside the positioning box 50. Two mounting frames 49 are fixedly installed on the outer wall surface of the support disc 48. A limiting block 52 is slidably connected inside the mounting frame 49. One side of the limiting block 52 is fixedly installed with a stop block 65. The limiting block 52 can limit the movement of the stop block 65. One side of the stop block 65 is fixedly installed with a pressing plate 46. A plurality of clamping strips 47 are fixedly installed on the outer wall surface of the pressing plate 46. A plurality of clamping grooves 51 are formed on the inner wall surface of the positioning box 50. The outer wall surface of the clamping strip 47 is movably clamped with the inner wall surface of the clamping groove 51. The top surface and the bottom surface of the support block 44 are respectively rotatably connected with a connecting rod 45. One ends of the two connecting rods 45 are respectively rotatably connected with the top surface and the bottom surface of the stop block 65. When it is necessary to wind the rope 34, the driving shaft of the second driving motor 41 rotates to drive the lead screw 42 to rotate. The rotation of the lead screw 42 causes the threaded ring 43 to move outward along the lead screw 42. The outward movement of the threaded ring 43 drives the connecting rod 45 to rotate outward. The outward rotation of the connecting rod 45 causes the stop block 65 to drive the pressing plate 46 outward until the clamping strip 47 on the pressing plate 46 is clamped with the clamping groove 51 on the positioning box 50. At this time, the rewinding roller 25 rotates to drive the positioning box 50 to rotate. The rotation of the positioning box 50 drives the mounting disc 54, the connecting box 55 and the clamping block 56 to rotate, so as to perform one-way rotation during winding. When releasing the fixing block 24 on the rewinding roller 25, the pressing plate 46 and the clamping strip 47 are reset. At this time, the rotation of the rewinding roller 25 is not restricted by the ratchet 39. The rewinding roller 25 rotates reversely under the action of the first driving motor 28 to release the rope 34, so as to reset the silicon wafer 38. The top surface and the bottom surface of the support block 44 and the top surface and the bottom surface of the stop block 65 are fixedly installed with a rotating shaft 53. The two ends of the connecting rod 45 are respectively rotatably connected with the rotating shaft 53. One side of the pressure sensor body 1 is installed with a protective box 67 through bolts. The protective box 67 can protect the first driving motor 28 and the second driving motor 41 to prevent the first driving motor 28 and the second driving motor 41 from being damaged;

[0039] Among them, for the multi-parameter intelligent control of the pressure sensor body 1, it is necessary to clarify the parameters to be controlled by the system (including pressure, temperature and flow rate); secondly, set indexes such as the response time, accuracy and stability of the system; adopt adaptive control, that is, it can automatically adjust the control parameters according to the changes of the system state;

[0040] Through the above technical solution, when the staff monitors the water pressure in the pipeline by using the pressure sensor body 1, the two ends of the guiding pipe 3 are connected to the pipeline. The water pressure contacts the silicon wafer 38 inside the pressure sensor body 1 through the guiding pipe 3. The deformation of the silicon wafer 38 causes the resistance to change, and then cooperates with the circuit on the pressure sensor body 1 to output the water pressure data. The water pressure data will be displayed by the display meter 2. At the same time, the two impellers 35 inside the guiding pipe 3 will rotate under the drive of the water flow in the pipeline. The impellers 35 will weaken the eddy current, avoid the irregular impact of the water flow on the silicon wafer 38 on the pressure sensor body 1 due to the eddy current, reduce the influence of the eddy current on the water pressure monitoring, and improve the accuracy of the water pressure measurement of the pressure sensor body 1;

[0041] Under the same pipeline diameter with the same radius, when the water pressure flow rate is slow, the water pressure is large. At this time, the silicon wafer 38 is flat. The large water pressure causes the silicon wafer 38 to bend and generate an arc. The change in the resistance of the bent silicon wafer 38 is then output as water pressure data through the circuit. The staff sets the minimum water pressure that the silicon wafer 38 inside the pressure sensor body 1 can measure in the flat state as the threshold value;

[0042] When the water pressure flow rate increases, the water pressure becomes smaller. When the water pressure is less than the set threshold value, the staff starts the second driving motor 41. The driving shaft of the second driving motor 41 rotates to drive the lead screw 42 to rotate. The rotation of the lead screw 42 causes the threaded ring 43 to move outward along the lead screw 42. The outward movement of the threaded ring 43 drives the support block 44 to move outward. The outward movement of the support block 44 drives the connecting rod 45 to rotate outward around the rotating shaft 53. The outward rotation of the connecting rod 45 also causes the stop block 65 to drive the limiting block 52 to move outward inside the mounting frame 49. The mounting frame 49 and the limiting block 52 can limit the movement of the stop block 65. The outward movement of the stop block 65 drives the pressing plate 46 and the clamping strip 47 to move outward. The outward movement of the clamping strip 47 will be clamped inside the clamping groove 51 of the positioning box 50. At this time, the winding roller 25 is connected to the positioning box 50 and the mounting disc 54;

[0043] The staff starts the first driving motor 28. The driving shaft of the first driving motor 28 rotates to drive the synchronous pulley 26 to rotate. The rotation of the synchronous pulley 26 drives another synchronous pulley 26 to rotate through the synchronous belt 27. The rotation of the two synchronous pulleys 26 drives the reciprocating lead screw 31 and the winding roller 25 to rotate respectively. The rotation of the winding roller 25 winds the rope 34. The winding of the rope 34 pulls the silicon wafer 38. The silicon wafer 38 will bend upward to generate an arc under the pull of the rope 34. At the same time, during the winding process of the rope 34, the mounting plate 32 will move back and forth along the reciprocating lead screw 31. The rope 34 passes through the support hole 33 on the mounting plate 32 and is wound on the winding roller 25. The mounting plate 32 can guide the rope 34 to prevent the rope 34 from gathering at a certain place on the winding roller 25. The rotation of the winding roller 25 also makes the positioning box 50 rotate. The rotation of the positioning box 50 drives the mounting disk 54 to rotate clockwise. The clockwise rotation of the mounting disk 54 drives the connection box 55 and the clamping block 56 to rotate. The rotation of the connection box 55 and the clamping block 56 is in extrusion cooperation with the ratchet 39, so that the clamping block 56 moves downward inside the connection box 55. The downward movement of the clamping block 56 also makes the positioning rod 60 move downward on the positioning block 59 and at the same time compresses the spring 61, thereby restricting the rotation direction of the winding roller 25 to achieve the one-way rotation of the winding roller 25, improving the accuracy of winding the rope 34, facilitating the control of the bending arc of the silicon wafer 38. The staff makes the silicon wafer 38 bend upward and generate a suitable arc by winding the rope 34. The specific arc needs to be topologically optimized. The bending of the silicon wafer 38 improves the sensitivity of the pressure sensor body 1, so as to adjust the sensitivity of the pressure sensor body 1 according to the water pressure in the pipeline, and then better monitor the water pressure in the pipeline;

[0044] When the staff needs to reset the silicon wafer 38, the staff starts the second driving motor 41. The reverse rotation of the second driving motor 41 makes the threaded ring 43 move inward along the lead screw 42. The inward movement of the lead screw 42 drives the stop block 65 and the pressing plate 46 to move inward through the connecting rod 45 and at the same time makes the clamping strip 47 separate from the clamping groove 51 on the positioning box 50. At this time, the rotation of the winding roller 25 will not drive the mounting disk 54 to rotate, canceling the restriction on the rotation direction of the winding roller 25 by the mounting disk 54, the connection box 55 and the clamping block 56. The reverse rotation of the first driving motor 28 releases the rope 34 wound on the winding roller 25, so as to reset the silicon wafer 38;

[0045] During this process, when the flow rate in the pipeline is slow, the water pressure is high, and the silicon wafer 38 inside the pressure sensor body 1 can monitor the water pressure in a flat state. When the flow rate in the pipeline is fast, the water pressure will decrease. When the water pressure is less than the minimum value that the silicon wafer 38 can measure in the flat state inside the pressure sensor body 1, the staff will use the rope 34 to pull the silicon wafer 38 to make the silicon wafer 38 bend and form an arc, improving the sensitivity of the pressure sensor body 1, so as to monitor smaller water pressures, achieving the adjustment effect of the arc of the silicon wafer 38, which is convenient for the staff to use the pressure sensor body 1 on the pipeline;

[0046] On one side inside the pressure sensor body 1, two positioning plates 62 are fixedly installed. A guide wheel 64 for guiding the rope 34 is rotatably connected between the two positioning plates 62. During the process of winding the rope 34 to change the arc of the silicon wafer 38, the rope 34 will move outward along the outer circumferential wall surface of the guide wheel 64. The guide wheel 64 can guide the rope 34 to prevent the rope 34 from tilting in the vertical direction, and then make the rope 34 pull the silicon wafer 38 to bend outward and form an arc in the vertical direction. Both ends of the guide wheel 64 are fixedly installed with support shafts 63, and the support shafts 63 are rotatably connected to the positioning plates 62;

[0047] Specifically, through the set rope 34, when the rope 34 is wound, it will move along the outer circumferential wall surface of the guide wheel 64. The winding of the rope 34 causes the guide wheel 64 to drive the support shaft 63 to rotate between the two positioning plates 62. The guide wheel 64 can guide the winding of the rope 34 to prevent the rope 34 from bending in the vertical direction, achieving the guiding effect on the rope 34;

[0048] Limiting holes 58 are opened on both sides of the connection box 55. Limiting blocks 57 are fixedly installed on both sides of the clamping block 56. The limiting blocks 57 are slidably connected to the limiting holes 58. The movement of the clamping block 56 inside the connection box 55 drives the limiting blocks 57 to move inside the limiting holes 58. The cooperation of the limiting blocks 57 and the limiting holes 58 can limit the movement of the clamping block 56. A limiting rod 30 for limiting the movement of the mounting plate 32 is fixedly installed between the two connecting blocks 29, and the mounting plate 32 is slidably connected to the limiting rod 30;

[0049] Specifically, through the set clamping block 56, the movement of the clamping block 56 drives the limiting block 57 to move inside the limiting hole 58 on the connection box 55. The cooperation of the limiting block 57 and the limiting hole 58 can limit the movement of the clamping block 56, achieving the limiting effect on the clamping block 56. When the mounting plate 32 moves on the reciprocating lead screw 31, it will move along the limiting rod 30. The limiting rod 30 can limit the movement of the mounting plate 32 to prevent the mounting plate 32 from rotating on the reciprocating lead screw 31;

[0050] A connecting pipe 5 is fixedly installed on the outer circumferential wall surface of the guiding pipe 3. A second valve 9 for water inlet is fixedly sleeved on the inner circumferential wall surface of the connecting pipe 5. When detecting the water pressure in the pipeline, the second valve 9 is closed. The left end of the guiding pipe 3 is the water inlet end and the right end is the water outlet end. The staff connects water into the interior of the connecting pipe 5, and the water enters the interior of the guiding pipe 3 through the connecting pipe 5, thereby performing reverse flushing on the guiding pipe 3 to clean the water scale adhering to the inner wall of the guiding pipe 3. A first valve 8 for closing the guiding pipe 3 is fixedly sleeved on the inner circumferential wall surface of the guiding pipe 3. A sewage discharge valve 10 for sewage discharge is fixedly installed on the outer circumferential wall surface of the guiding pipe 3;

[0051] Specifically, through the provided guiding pipe 3, scale may exist on the inner wall of the guiding pipe 3 after long-term use. The staff closes the two first valves 8 to make the guiding pipe 3 in a closed state. The staff connects the external pipeline to the connecting pipe 5. The staff opens the second valve 9, and the water reversely enters the interior of the guiding pipe 3 through the connecting pipe 5. At the same time, the staff opens the sewage discharge valve 10, and the water enters the guiding pipe 3 through the connecting pipe 5 to reversely wash the scale on the inner wall of the guiding pipe 3 and the impeller 35. The washed water will be discharged through the sewage discharge valve 10, thereby cleaning the guiding pipe 3;

[0052] The stabilizing mechanism 7 includes a support frame 18. The support frame 18 is fixedly installed on the outer circumferential wall surface of the display table 2. A fixed box 11 is rotatably connected inside the support frame 18. A support plate 12 is slidably connected inside the fixed box 11. A suction cup 13 for adsorbing the wall surface is fixedly installed on the top surface of the support plate 12. An air pump 15 is installed on one side of the support plate 12 through a bracket. The air pump 15 is communicated with the suction cup 13 through a communication pipe 14. The inner circumferential wall surface of the air inlet hole of the air pump 15 is fixedly sleeved with the communication pipe 14. One end of the communication pipe 14 penetrates through the suction cup 13. The staff moves the support plate 12 outward to drive the suction cup 13 to move outward until the suction cup 13 is moved outward to contact the wall. The staff starts the air pump 15, and the air pump 15 extracts the air inside the suction cup 13 through the communication pipe 14, so that a negative pressure is formed inside the suction cup 13, and the suction cup 13 can be adsorbed on the wall surface to improve the stability of the pressure sensor body 1 and the display table 2.

[0053] Specifically, through the provided guiding pipe 3, after the staff connects the guiding pipe 3 to the pipeline, the staff moves the support plate 12 outward to drive the suction cup 13 to move outward to adjust the height of the suction cup 13. At the same time, the staff rotates the suction cup 13 to adjust its angle so that the suction cup 13 abuts against the wall surface. The staff starts the air pump 15, and the air pump 15 extracts the air inside the suction cup 13 through the communication pipe 14, so that a negative pressure is formed inside the suction cup 13, thereby enabling the suction cup 13 to adsorb the wall surface, thereby stabilizing the pressure sensor body 1 and the display table 2 and improving the stability of the pressure sensor body 1 and the display table 2.

[0054] Example 2: Please refer toFigures 1 to 9 , a pressure sensor for a multi-parameter intelligent control system. Threaded columns 19 are fixedly installed on both sides of the fixed box 11. One end of the threaded column 19 penetrates through the support frame 18 and extends to the outside of the support frame 18. A nut is threadedly connected to the outer wall surface of the threaded column 19. The staff rotates the fixed box 11 to drive the threaded column 19 to rotate on the support frame 18 until the suction cup 13 is adjusted to an appropriate angle. Then, the staff uses the nut to lock the angle of the suction cup 13. A number of connection holes 16 are provided on both sides of the fixed box 11. Screws 17 for locking the fixed box 11 are provided on both sides of the support plate 12. One end of the screw 17 penetrates through the fixed box 11 and is threadedly connected to one side of the support plate 12. Threaded grooves are provided on both sides of the fixed box 11. One end of the screw 17 is threadedly connected to the inner wall surface of the threaded groove. The staff moves the support plate 12 outwards until the suction cup 13 is moved to an appropriate position. The staff puts the screw 17 into the connection hole 16 on the fixed box 11 and rotates the screw 17 to lock the support plate 12;

[0055] Specifically, through the provided suction cup 13, when the suction cup 13 moves upwards, it drives the support plate 12 to move outwards inside the fixed box 11. The staff puts the screw 17 into the connection hole 16 on the fixed box 11 and rotates the screw 17 so that one end of the screw 17 enters the threaded groove on the support plate 12, thereby adjusting the height of the suction cup 13. The staff rotates the fixed box 11 to drive the support plate 12 and the suction cup 13 to rotate. The rotation of the fixed box 11 also causes the fixed box 11 to drive the threaded column 19 to rotate on the support frame 18. The staff rotates the suction cup 13 to an appropriate angle. Then, the staff places the nut on the threaded column 19 and rotates the nut to lock the angle of the threaded column 19, thereby determining the angle of the suction cup 13;

[0056] One end of the display table 2 is fixedly installed with a support ring 20. An installation ring 21 is threadedly connected to the outer wall surface of the support ring 20. A transparent glass 22 is installed on the inner wall surface of the installation ring 21. A heating wire 23 for heating the transparent glass 22 is fixedly installed on one side of the transparent glass 22;

[0057] Specifically, through the provided pressure sensor body 1, when the pressure sensor body 1 is installed on a pipeline for use, the display screen on the display table 2 on the top surface of the pressure sensor body 1 may be covered with water vapor due to humidity. The staff activates the heating wire 23, and the heating wire 23 can heat the transparent glass 22 to remove the water vapor on the transparent glass 22, helping the staff to clearly see the values on the display table 2. The staff rotates the installation ring 21 to remove the installation ring 21 and the transparent glass 22 from the support ring 20, thereby performing maintenance on the pressure sensor body 1.

[0058] Working principle: When the staff use the pressure sensor body 1 to monitor the water pressure in the pipeline through the set pressure sensor body 1, the staff will connect the guiding pipe 3 to the pipeline. The water in the pipeline contacts the silicon wafer 38 inside the pressure sensor body 1 through the guiding pipe 3. The water pressure causes the silicon wafer 38 to bend and generate an arc, and then the signal is output through the circuit on the pressure sensor body 1 and displayed on the display meter 2.

[0059] Secondly, after installing the guiding pipe 3 together with the pressure sensor body 1 and the display meter 2 on the pipeline, the staff move the support plate 12 outwards and rotate the fixed box 11 to adjust the height and angle of the suction cup 13 and make the suction cup 13 contact with the wall surface at the same time. The staff extract the air inside the suction cup 13 through the air pump 15 and the connecting pipe 14, so that the suction cup 13 adsorbs on the wall surface, and then stabilizes the pressure sensor body 1 and the display meter 2;

[0060] Subsequently, when the water flow in the pipeline enters the guiding pipe 3, it will cause the impeller 35 inside the guiding pipe 3 to rotate. The rotation of the impeller 35 weakens the eddy current, prevents the eddy current from irregularly impacting the silicon wafer 38, and reduces the influence of the eddy current on the monitoring result of the pressure sensor body 1;

[0061] When the water flow rate in the pipeline is slow, the water pressure is relatively large. At this time, the silicon wafer 38 inside the pressure sensor body 1 is in a flat state. The silicon wafer 38 in the flat state inside the pressure sensor body 1 can respond to the water pressure and be monitored through the pressure sensor body 1 and the display meter 2;

[0062] Meanwhile, when the flow rate inside the pipeline is relatively fast, the water pressure may be less than the measurement threshold of the silicon wafer 38 on the pressure sensor body 1. At this time, the staff activates the second drive motor 41. The rotation of the second drive motor 41 drives the lead screw 42 to rotate. The rotation of the lead screw 42 causes the connecting rod 45 to move outward. The outward movement of the connecting rod 45 drives the pressing plate 46 and the clamping strip 47 to move outward. The outward movement of the clamping strip 47 will enter the inside of the clamping groove 51 on the positioning box 50, thereby connecting the winding roller 25 with the positioning box 50 and the mounting disc 54. The drive shaft of the first drive motor 28 rotates to drive the synchronous pulley 26 to rotate. The rotation of the synchronous pulley 26 drives another synchronous pulley 26 to rotate through the synchronous belt 27. The rotation of the synchronous pulley 26 also causes the winding roller 25 to rotate. The rotation of the winding roller 25 winds the rope 34. The rotation of the winding roller 25 also drives the positioning box 50 and the mounting disc 54 to rotate. The rotation of the mounting disc 54 drives the connecting box 55 and the clamping block 56 to rotate clockwise. The clockwise rotation of the connecting box 55 and the clamping block 56 causes the clamping block 56 to move downward inside the connecting box 55. When the rope 34 is wound, the clamping block 56 is engaged with the ratchet 39 under the action of the spring 61, thereby restricting the rotation direction of the winding roller 25 to achieve the one-way rotation of the winding roller 25. The winding of the rope 34 also pulls the silicon wafer 38. The pulling of the silicon wafer 38 causes the silicon wafer 38 to bend outward and generate an arc. After the silicon wafer 38 generates an arc, the sensitivity of the pressure sensor body 1 increases, and then a smaller water pressure can be detected;

[0063] Meanwhile, during the winding process of the rope 34, the rotation of the synchronous pulley 26 also drives the reciprocating lead screw 31 to rotate. The rotation of the reciprocating lead screw 31 drives the mounting plate 32 to move back and forth on the reciprocating lead screw 31. The mounting plate 32 can guide the rope 34 so that the rope 34 can be evenly wound on the winding roller 25, avoiding the rope 34 from gathering at a certain place on the winding roller 25;

[0064] Finally, after the guiding pipe 3 is used for a long time, there may be scale on the inner wall of the guiding pipe 3. The staff closes the two first valves 8 to close the guiding pipe 3 and opens the second valve 9 and the sewage valve 10. The staff connects water into the inside of the connecting pipe 5. The water entering the inside of the connecting pipe 5 will reverse-flush the guiding pipe 3 and discharge it through the sewage valve 10, thereby cleaning the scale on the inner wall of the guiding pipe 3.

[0065] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pressure sensor for a multi-parameter intelligent control system, characterized in that, Including: A pressure sensor body (1), on the top surface of the pressure sensor body (1), a display meter (2) for displaying pressure data is fixedly installed; A guiding pipe (3), the guiding pipe (3) is threadedly connected to the bottom surface of the pressure sensor body (1) for connecting with an external pipe, and a silicon cup (37) is fixedly installed on the inner bottom surface of the pressure sensor body (1); A silicon wafer (38), the silicon wafer (38) is fixedly installed on the inner circumferential wall surface of the silicon cup (37) for reacting to water pressure; An adjusting mechanism (6), the adjusting mechanism (6) is arranged on one side of the pressure sensor body (1) for adjusting the curvature of the silicon wafer (38), and a stabilizing mechanism (7) for stabilizing the pressure sensor body (1) and the display meter (2) is arranged on the outer circumferential wall surface of the display meter (2); The adjusting mechanism (6) includes two fixing blocks (24), a winding roller (25) is rotatably connected between the two fixing blocks (24), two connecting blocks (29) are fixedly installed on one side of the pressure sensor body (1), a reciprocating lead screw (31) is rotatably connected between the two connecting blocks (29), one end of the winding roller (25) and one end of the reciprocating lead screw (31) are both fixedly installed with a synchronous pulley (26), a synchronous belt (27) is rotatably connected between the two synchronous pulleys (26), a first driving motor (28) for driving the synchronous pulley (26) to rotate is installed on one side of the pressure sensor body (1), a rope (34) is fixedly installed on the top surface of the silicon wafer (38), a mounting plate (32) is slidably connected to the outer circumferential wall surface of the reciprocating lead screw (31), the rope (34) passes through the pressure sensor body (1) and is fixedly connected to the outer circumferential wall surface of the winding roller (25), a support hole (33) is formed on the top surface of the mounting plate (32), and the outer circumferential wall surface of the rope (34) is movably sleeved with the inner circumferential wall surface of the support hole (33), and two impellers (35) for weakening eddy currents are rotatably connected to the inner circumferential wall surface of the guiding pipe (3); One end of the winding roller (25) is fixedly installed with a second driving motor (41). One end of the driving shaft of the second driving motor (41) is fixedly installed with a lead screw (42). The outer wall surface of the lead screw (42) is threadedly connected with a threaded ring (43). The outer wall surface of the threaded ring (43) is fixedly installed with two support blocks (44). A support disc (48) is arranged inside the positioning box (50). The outer wall surface of the support disc (48) is fixedly installed with two mounting frames (49). A limiting block (52) is slidably connected inside the mounting frame (49). One side of the limiting block (52) is fixedly installed with a stop block (65). One side of the stop block (65) is fixedly installed with a pressing plate (46). The outer wall surface of the pressing plate (46) is fixedly installed with a plurality of clamping strips (47). A plurality of clamping grooves (51) are formed on the inner wall surface of the positioning box (50). The outer wall surface of the clamping strip (47) is movably clamped with the inner wall surface of the clamping groove (51). The top and bottom surfaces of the support block (44) are respectively rotatably connected with a connecting rod (45). One ends of the two connecting rods (45) are respectively rotatably connected with the top and bottom surfaces of the stop block (65).

2. The pressure sensor of a multi-parameter intelligent control system according to claim 1, characterized in that: The adjusting mechanism (6) further includes a ratchet wheel (39). The ratchet wheel (39) is fixedly installed on one side of the left fixed block (24). One side of the left fixed block (24) is rotatably connected with a mounting disc (54). The outer wall surface of the mounting disc (54) is fixedly installed with two connecting boxes (55). A clamping block (56) is slidably connected inside the connecting box (55). The clamping block (56) is movably clamped with the ratchet wheel (39). Positioning blocks (59) are fixedly installed on both sides inside the connecting box (55). The bottom surface of the clamping block (56) is fixedly installed with two positioning rods (60). One end of the positioning rod (60) penetrates through the positioning block (59) and extends to the bottom surface of the positioning block (59). The positioning rod (60) is elastically connected with the positioning block (59) through a spring (61). One end of the mounting disc (54) is coaxially rotatably connected with a positioning box (50). A connecting roller (40) is fixedly installed between the positioning box (50) and the mounting disc (54). A protective box (67) is installed on one side of the pressure sensor body (1).

3. The pressure sensor of a multi-parameter intelligent control system according to claim 2, wherein: Two positioning plates (62) are fixedly installed on one side inside the pressure sensor body (1). A guide wheel (64) for guiding the rope (34) is rotatably connected between the two positioning plates (62). Support shafts (63) are fixedly installed at both ends of the guide wheel (64). The support shafts (63) are rotatably connected with the positioning plates (62).

4. A pressure sensor of a multi-parameter intelligent control system according to claim 3, characterized in that: Limiting holes (58) are formed on both sides of the connecting box (55). Limiting blocks (57) are fixedly installed on both sides of the clamping block (56). The limiting blocks (57) are slidably connected with the limiting holes (58).

5. A pressure sensor of a multi-parameter intelligent control system according to claim 1, characterized in that: A connecting pipe (5) is fixedly installed on the outer circumferential wall surface of the guiding pipe (3). A second valve (9) for water inlet is fixedly sleeved on the inner circumferential wall surface of the connecting pipe (5). A first valve (8) for closing the guiding pipe (3) is fixedly sleeved on the inner circumferential wall surface of the guiding pipe (3). A sewage discharge valve (10) for sewage discharge is fixedly installed on the outer circumferential wall surface of the guiding pipe (3).

6. A pressure sensor of a multi-parameter intelligent control system according to claim 1, characterized in that: The stabilizing mechanism (7) includes a support frame (18). The support frame (18) is fixedly installed on the outer circumferential wall surface of the display meter (2). A fixed box (11) is rotatably connected inside the support frame (18). A support plate (12) is slidably connected inside the fixed box (11). A suction cup (13) for adsorbing to the wall surface is fixedly installed on the top surface of the support plate (12). An air pump (15) is installed on one side of the support plate (12). The air pump (15) is communicated with the suction cup (13) through a connecting pipe (14).

7. A pressure sensor of a multi-parameter intelligent control system according to claim 6, characterized in that: Threaded columns (19) are fixedly installed on both sides of the fixed box (11). One end of each threaded column (19) penetrates through the support frame (18) and extends to the outside of the support frame (18). Nuts are threadedly connected to the outer circumferential wall surfaces of the threaded columns (19). A plurality of connecting holes (16) are formed on both sides of the fixed box (11). Screws (17) for locking the fixed box (11) are arranged on both sides of the support plate (12).

8. A pressure sensor of a multi-parameter intelligent control system according to claim 1, characterized in that: A support ring (20) is fixedly installed at one end of the display meter (2). An installation ring (21) is threadedly connected to the outer circumferential wall surface of the support ring (20). A transparent glass (22) is installed on the inner circumferential wall surface of the installation ring (21). A heating wire (23) for heating the transparent glass (22) is fixedly installed on one side of the transparent glass (22).

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