A tunnel water supply pipeline pressure monitoring and alarm device and its usage method

Abstract

The present invention discloses a pressure monitoring and alarming device for a tunnel water supply pipeline and its usage method, which relates to the field of tunnel water supply pipeline pressure monitoring and alarming. To solve the problem that the location of the existing tunnel is relatively remote, relying only on a pressure sensor to monitor the pressure, the received alarm information is single after the pressure is abnormal, and it can only judge that the pressure is abnormal, and it is impossible to judge which end of the pressure sensor the abnormal situation appears at. After arriving at the scene, it is necessary to check the abnormal position one by one, which takes a long time. The upper end of the middle circular disc is welded and fixed with a fixed pipe body. The upper end of the fixed pipe body is provided with a connecting pipeline. The upper end of the connecting pipeline is welded and fixed with an upper cylindrical box body. A first cylindrical cavity is opened inside the fixed pipe body. A first limiting sliding cavity and a second limiting sliding cavity are opened inside the connecting pipeline. The internal structures of the first limiting sliding cavity and the second limiting sliding cavity are the same.

Description

Technical Field

[0001] The present invention relates to the field of tunnel water supply pipeline pressure monitoring and alarm, and specifically to a tunnel water supply pipeline pressure monitoring and alarm device and its usage method. Background Art

[0002] Tap water refers to the water that is purified and disinfected by a tap water treatment plant and meets the corresponding standards for people's living and production use. And water supply is an important part of the urban development process. Water supply is not only for residential buildings, but also for shopping malls, public safety facilities, self-built houses in the suburbs, etc. Therefore, the safety of water supply pipelines is very important; the detection of the water supply pressure of water supply pipelines is a key technical measure for scientifically controlling the water pressure balance and safety of tap water supply.

[0003] Tunnel water supply is an advance safeguard measure for possible safety accidents. Tunnels are in complex environments such as mountains and soil, and are very vulnerable to natural disasters. For example, the rolling of stones caused by landslides is likely to damage the tunnel water supply pipeline; or the influence of seismic waves on the mountain causes pipeline damage and other situations.

[0004] At present, the pressure monitoring of tunnel water supply pipelines is achieved by relying on pressure sensors. Once the pressure is abnormal, the data transmitted by the pressure sensor will be abnormal, thus reminding the staff to arrive at the tunnel location for maintenance as soon as possible; however, the location of the tunnel is relatively remote, and the received alarm information is single. It can only judge that the pressure is abnormal and cannot judge which end of the pressure sensor the abnormal situation appears at. After arriving at the scene, it is necessary to check the abnormal location one by one, which takes a long time. Summary of the Invention

[0005] The purpose of the present invention is to provide a tunnel water supply pipeline pressure monitoring and alarm device and its usage method to solve the problem proposed in the above background art that the location of the tunnel is relatively remote, and only relying on pressure sensors to monitor the pressure, the received alarm information is single after the pressure is abnormal, only the pressure abnormality can be judged, and it is impossible to judge which end of the pressure sensor the abnormal situation appears at. After arriving at the scene, it is necessary to check the abnormal location one by one, which takes a long time.

[0006] To achieve the above object, the present invention provides the following technical solution: A tunnel water supply pipeline pressure monitoring and alarm device, including a middle circular disc, a fixed pipe body is welded and fixed to the upper end of the middle circular disc, a connecting pipeline is arranged at the upper end of the fixed pipe body, an upper cylindrical box body is welded and fixed to the upper end of the connecting pipeline, a first cylindrical cavity is opened inside the fixed pipe body, a first limiting sliding cavity and a second limiting sliding cavity are opened inside the connecting pipeline, the internal structures of the first limiting sliding cavity and the second limiting sliding cavity are the same, a first movable plug is slidably connected inside the first limiting sliding cavity, a second movable plug is slidably connected inside the second limiting sliding cavity, the structures of the first movable plug and the second movable plug are the same, a middle connecting column is fixedly connected between the first movable plug and the second movable plug, an upper connecting column is fixedly connected to the upper end of the second movable plug, an upper movable component is arranged inside the upper cylindrical box body, the upper movable component includes a movable column, a lower sliding rod is fixedly connected to the middle of the lower end of the movable column, the lower sliding rod is limited and slid by a limiting groove with the lower end surface of the upper cylindrical box body, the lower end of the lower sliding rod is fixed to the upper connecting column, a side slot is opened on the side surface of the movable column, a rack is arranged inside the side slot, a bearing seat is installed on one side of the lower end inside the upper cylindrical box body, a rotating gear is rotatably connected to the bearing seat, the rotating gear meshes with the rack, an angular velocity sensor is installed along the tooth top side of the rotating gear inside the upper cylindrical box body, an upper fixing rod is fixedly connected to the middle of the upper end of the movable column, an upper fixing disc is fixedly connected to the upper end of the upper fixing rod, a first connecting pole piece is installed on the upper end of the upper fixing disc, a first connecting diaphragm is arranged on the outer end surface of the first connecting pole piece, a second connecting pole piece is installed along the upper end of the first connecting pole piece inside the upper cylindrical box body, a side fixing plate is welded and fixed to the middle of the outer side of the movable column away from the side slot, a lower fixing rod is fixedly connected to the outer side of the lower end of the side fixing plate, a lower fixing disc is fixedly connected to the lower end of the lower fixing rod, a third connecting pole piece is installed on the lower end of the lower fixing disc, a second connecting diaphragm is arranged on the outer end surface of the third connecting pole piece, and a fourth connecting pole piece is installed along the lower end of the third connecting pole piece inside the upper cylindrical box body.

[0007] Preferably, water inlet blocking blocks are welded and fixed to the front and rear ends of one side inside the middle circular disc. The water inlet blocking blocks are composed of a first arc convex part, a second arc convex part and an arc concave part, and the first arc convex part, the second arc convex part and the arc concave part are connected in sequence. An arc baffle is welded and fixed to the other side inside the middle circular disc. The arc baffle is composed of an arc plate part and a column part. The arc plate part is a semi-tube structure, and the column parts are integrally connected to the front and rear ends of the arc plate part. The center of the cross-section of the arc concave part and the center of the cross-section of the column part are co-point. A middle water inlet channel is formed between the two water inlet blocking blocks, a water flow monitoring cavity is formed inside the arc baffle, a discharge channel is formed between the arc concave part and the column part, and a flow channel is formed along the outer sides of the water inlet blocking blocks and the arc baffle inside the middle circular disc.

[0008] Preferably, both the first limiting sliding cavity and the second limiting sliding cavity are composed of a first frustum-shaped cavity, a second frustum-shaped cavity, a second cylindrical cavity, a third frustum-shaped cavity, and a fourth frustum-shaped cavity. The first frustum-shaped cavity and the second frustum-shaped cavity are symmetrically arranged with the third frustum-shaped cavity and the fourth frustum-shaped cavity. The slope of the inclined surface of the first frustum-shaped cavity and the fourth frustum-shaped cavity is smaller than the slope of the inclined surface of the second cylindrical cavity and the third frustum-shaped cavity. Both the first movable plug and the second movable plug are composed of a plug body main body and a sealing ring, and the plug body main body is located inside the sealing ring.

[0009] Preferably, a first pressure spring is arranged along the outside of the middle connecting column inside the first limiting sliding cavity, a second pressure spring is arranged along the outside of the middle connecting column inside the second limiting sliding cavity, and a third pressure spring is arranged along the outside of the upper connecting column inside the second limiting sliding cavity.

[0010] Preferably, a fixed partition is arranged inside the upper cylindrical box body, and a circuit board is installed along one side of the fixed partition inside the upper cylindrical box body. The circuit board and the upper movable assembly are located in different chambers.

[0011] Preferably, a first current sensor, a second current sensor, a control processor, and a wireless data transmission module are installed on the circuit board. The output ends of the first connecting pole piece and the second connecting pole piece are electrically connected to the input end of the first current sensor. The output ends of the third connecting pole piece and the fourth connecting pole piece are electrically connected to the input end of the second current sensor. The output ends of the first current sensor and the second current sensor are electrically connected to the input end of the control processor. The output end of the angular velocity sensor is electrically connected to the input end of the control processor. The output end of the control processor is electrically connected to the input end of the wireless data transmission module.

[0012] Preferably, fixed pipes are welded and fixed on both sides of the middle circular disc. The fixed pipes are communicated with the inside of the middle circular disc. An inlet cavity is formed inside the fixed pipe near one end of the water inlet baffle, and an outlet cavity is formed inside the fixed pipe far from one end of the water inlet baffle.

[0013] Preferably, a side connecting flange is welded and fixed on the outside of the fixed pipe. A first connecting flange is welded and fixed at the upper end of the fixed pipe body. A second connecting flange is welded and fixed at the lower end of the connecting pipe. The first connecting flange and the second connecting flange are fixed by bolts.

[0014] A usage method includes the following steps:

[0015] Step 1: The inlet water flows into the middle circular disk through the water inlet cavity of the fixed pipe, part of the water flows into the flow channel under the blockage of the first arc-shaped convex part on the water inlet block, and then flows out from the water outlet cavity of the fixed pipe, and another part of the water flows into the water flow monitoring cavity through the middle water inlet channel formed between the two water inlet blocks, and then enters the flow channel through the discharge channel formed between the water inlet block and the column part on the arc-shaped baffle, and then flows out from the water outlet cavity of the fixed pipe;

[0016] Step 2: The water flow in the water flow monitoring chamber exerts a certain pressure on the first movable plug in the first limit sliding chamber, and exerts an upward force on the second movable plug, the middle connecting column and the upper connecting column. Under the action of the first pressure spring, the second pressure spring and the third pressure spring, the first movable plug and the second movable plug are kept in a balanced state;

[0017] Step 3: When the water supply pipe at the front end of the fixed pipe in the water inlet direction is gradually blocked by sludge, the water flow pressure in the middle circular disk gradually decreases, and the pressure on the first movable plug gradually decreases. Under the action of the first pressure spring, the second pressure spring and the third pressure spring, the first movable plug, the second movable plug, the middle connecting column and the upper connecting column gradually move downward, driving the upper movable component downward. Due to the meshing relationship between the rack on the movable column and the rotating gear, the rotating gear rotates slowly, and the angular velocity sensor measures the angular velocity; the third connecting electrode gradually contacts the fourth connecting electrode, and the second current sensor receives the current flow signal; the control processor receives and processes the signal, and the wireless data transmission module transmits the signal;

[0018] Step 4: When the water supply pipe at the rear end of the fixed pipe in the water outlet direction is gradually blocked by sludge, the water flow pressure in the middle circular disk gradually increases, and the pressure on the first movable plug gradually increases. Under the action of the first pressure spring, the second pressure spring and the third pressure spring, the first movable plug, the second movable plug, the middle connecting column and the upper connecting column gradually move upward, driving the upper movable component upward. Due to the meshing relationship between the rack on the movable column and the rotating gear, the rotating gear rotates slowly, and the angular velocity sensor measures the angular velocity; the first connecting electrode gradually contacts the second connecting electrode, and the first current sensor receives the current flow signal; the control processor receives and processes the signal, and the wireless data transmission module transmits the signal;

[0019] Step Five: When the water supply pipe at the front end of the fixed pipe in the water inlet direction ruptures, the water flow pressure in the middle circular disc rapidly decreases, and the pressure on the first movable plug rapidly decreases. Under the action of the first pressure spring, the second pressure spring, and the third pressure spring, the first movable plug, the second movable plug, the middle connecting column, and the upper connecting column rapidly move downward, driving the upper movable assembly downward. Due to the meshing relationship between the rack on the movable column and the rotating gear, the rotating gear rotates rapidly, and the angular velocity sensor measures the angular velocity; the third connecting pole piece rapidly contacts the fourth connecting pole piece, and the second current sensor receives the current flow signal; the control processor receives the signal and processes it, and the wireless data transmission module transmits the signal;

[0020] Step Six: When the water supply pipe at the rear end of the fixed pipe in the water outlet direction ruptures, the water flow pressure in the middle circular disc rapidly increases, and the pressure on the first movable plug rapidly increases. Under the action of the first pressure spring, the second pressure spring, and the third pressure spring, the first movable plug, the second movable plug, the middle connecting column, and the upper connecting column rapidly move upward, driving the upper movable assembly upward. Due to the meshing relationship between the rack on the movable column and the rotating gear, the rotating gear rotates rapidly, and the angular velocity sensor measures the angular velocity; the first connecting pole piece rapidly contacts the second connecting pole piece, and the first current sensor receives the current flow signal; the control processor receives the signal and processes it, and the wireless data transmission module transmits the signal;

[0021] Step Seven: The background rapidly determines the type of abnormal water supply pipe pressure based on the induced current signal received by the first current sensor or the second current sensor and the speed measurement data of the angular velocity sensor.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In this invention, when an abnormal situation occurs in the water supply pipe at the front end of the fixed pipe in the water inlet direction, the water flow pressure in the middle circular disk decreases, and the pressure on the first movable plug decreases. Under the action of the first pressure spring, the second pressure spring, and the third pressure spring, the first movable plug, the second movable plug, the middle connecting column, and the upper connecting column move downward, driving the upper movable assembly downward. Due to the meshing relationship between the rack on the movable column and the rotating gear, the rotating gear rotates, and the angular velocity sensor measures the angular velocity; the third connecting pole piece gradually contacts the fourth connecting pole piece, and the second current sensor receives the current flow signal. When an abnormal situation occurs in the water supply pipe at the rear end of the fixed pipe in the water outlet direction, the water flow pressure in the middle circular disk increases, and the pressure on the first movable plug increases. Under the action of the first pressure spring, the second pressure spring, and the third pressure spring, the first movable plug, the second movable plug, the middle connecting column, and the upper connecting column move upward, driving the upper movable assembly upward. Due to the meshing relationship between the rack on the movable column and the rotating gear, the rotating gear rotates, and the angular velocity sensor measures the angular velocity; the first connecting pole piece gradually contacts the second connecting pole piece, and the first current sensor receives the current flow signal; the control processor receives and processes the signals, and the wireless data transmission module transmits the signals. The first current sensor sensing current indicates an abnormal situation at the rear end, and the second current sensor sensing current indicates an abnormal situation at the front end, quickly determining the abnormal position; if the angular velocity measured by the angular velocity sensor is large, it is an external problem such as a pipe rupture. If the angular velocity measured by the transmitted angular velocity sensor continues to decrease, it indicates that there is sludge or other foreign objects blocking. Normally, it can be left unprocessed. After the pole pieces contact and alarm, it indicates that there are too many blocking foreign objects affecting the water flow and needs to be processed. The abnormal type can be quickly determined through the data measured by the angular velocity sensor. This solves the problem that the location of the tunnel is relatively remote, relying only on the pressure sensor to monitor the pressure. After the pressure is abnormal, the received alarm information is single, only the pressure abnormality can be judged, and it is impossible to judge which end of the pressure sensor the abnormal situation appears at. After arriving at the scene, it is necessary to check the abnormal position one by one, consuming a long time.

[0024] 2. In this invention, the incoming water flow enters the middle circular disk through the water inlet cavity of the fixed pipe. Part of the water flow enters the flow channel under the blockage of the first arc-shaped protrusion on the water inlet block, and then flows out from the water outlet cavity of the fixed pipe. Another part of the water flow enters the water flow monitoring cavity through the middle water inlet channel formed between the two water inlet blocks, and then enters the flow channel through the discharge channel formed between the columnar part of the water inlet block and the arc-shaped baffle, and then flows out from the water outlet cavity of the fixed pipe. Through the setting of the structure and position of the water inlet block and the arc-shaped baffle, the water flow does not flow in the same direction; if the water flow directly flows out in the same direction, the first movable plug is not sensitive to the change in water flow pressure. Through the improvement of the structure, the water flow will flow into the water flow monitoring cavity, and has a tendency to flow upward and outward under the blockage of the arc-shaped baffle, thereby exerting a certain pressure on the first movable plug, and the first movable plug is sensitive to the change in water flow pressure, cooperating to achieve the monitoring process.

[0025] 3. In this invention, both the first limiting sliding cavity and the second limiting sliding cavity are composed of a first frustum-shaped cavity, a second frustum-shaped cavity, a second cylindrical cavity, a third frustum-shaped cavity, and a fourth frustum-shaped cavity. The first frustum-shaped cavity and the second frustum-shaped cavity are symmetrically arranged with the third frustum-shaped cavity and the fourth frustum-shaped cavity. The diameters of the upper and lower movable ends of the movable plug gradually decrease, which is beneficial to improving the sealing effect and reducing the influence of the change in water flow pressure on the upper structure of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of a tunnel water supply pipeline pressure monitoring and alarm device of the present invention;

[0027] Figure 2 is a transverse sectional structural schematic diagram of a tunnel water supply pipeline pressure monitoring and alarm device of the present invention;

[0028] Figure 3 is a vertical sectional structural schematic diagram of a tunnel water supply pipeline pressure monitoring and alarm device of the present invention;

[0029] Figure 4 of the present invention Figure 3 enlarged view of the structure at A;

[0030] Figure 5 is a three-dimensional structural schematic diagram of the upper movable component of a tunnel water supply pipeline pressure monitoring and alarm device of the present invention;

[0031] Figure 6 is a schematic diagram of the system principle of a tunnel water supply pipeline pressure monitoring and alarm device of the present invention.

[0032] In the figure: 1. Intermediate circular disc; 2. Fixed pipe; 3. Side connection flange; 4. Fixed pipe body; 5. First connection flange; 6. Second connection flange; 7. Connection pipe; 8. Upper cylindrical box; 9. Water inlet block; 10. Arc-shaped baffle; 11. Arc-shaped plate part; 12. Cylindrical part; 13. First arc-shaped convex part; 14. Second arc-shaped convex part; 15. Arc-shaped concave part; 16. Water inlet cavity; 17. Intermediate water inlet channel; 18. Water flow monitoring cavity; 19. Discharge channel; 20. Flow channel; 21. Water outlet cavity; 22. First cylindrical cavity; 23. First limit sliding cavity; 24. Second limit sliding cavity; 25. First frustum-shaped cavity; 26. Second frustum-shaped cavity; 27. Second cylindrical cavity; 28. Third frustum-shaped cavity; 29. Fourth frustum-shaped cavity; 30. First movable plug; 31. Second movable plug; 32. Plug body main body; 33. Sealing ring; 34. Intermediate connection column; 35. First pressure spring; 36. Second pressure spring; 37. Upper connection column; 38. Third pressure spring; 39. Upper movable assembly; 40. Movable column; 41. Side slot; 42. Rack; 43. Lower sliding rod; 44. Limit slot; 45. Upper fixed rod; 46. Upper fixed disc; 47. Side fixed plate; 48. Lower fixed rod; 49. Lower fixed disc; 50. First connection pole piece; 51. First connection diaphragm; 52. Second connection pole piece; 53. Third connection pole piece; 54. Second connection diaphragm; 55. Fourth connection pole piece; 56. Rotating gear; 57. Bearing seat; 58. Angular velocity sensor; 59. Fixed partition; 60. Circuit board; 61. First current sensor; 62. Second current sensor; 63. Control processor; 64. Wireless data transmission module. Detailed implementation manner

[0033] 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.

[0034] Please refer to Figures 1-6, an embodiment provided by the present invention: a tunnel water supply pipeline pressure monitoring and alarming device, including an intermediate circular disc 1, a fixed pipe body 4 is fixedly welded to the upper end of the intermediate circular disc 1, a connecting pipeline 7 is arranged at the upper end of the fixed pipe body 4, an upper cylindrical box body 8 is fixedly welded to the upper end of the connecting pipeline 7, a first cylindrical cavity 22 is opened inside the fixed pipe body 4, a first limiting sliding cavity 23 and a second limiting sliding cavity 24 are opened inside the connecting pipeline 7, the internal structures of the first limiting sliding cavity 23 and the second limiting sliding cavity 24 are the same, both the first limiting sliding cavity 23 and the second limiting sliding cavity 24 are composed of a first frustum-shaped cavity 25, a second frustum-shaped cavity 26, a second cylindrical cavity 27, a third frustum-shaped cavity 28 and a fourth frustum-shaped cavity 29, the first frustum-shaped cavity 25 and the second frustum-shaped cavity 26 are symmetrically arranged with the third frustum-shaped cavity 28 and the fourth frustum-shaped cavity 29, the inclination angles of the inclined surfaces of the first frustum-shaped cavity 25 and the fourth frustum-shaped cavity 29 are smaller than those of the inclined surfaces of the second cylindrical cavity 27 and the third frustum-shaped cavity 28, and the diameters of the upper and lower movable ends of the movable plug in the first frustum-shaped cavity 25 and the second frustum-shaped cavity 26 and the third frustum-shaped cavity 28 and the fourth frustum-shaped cavity 29 gradually decrease, which is beneficial to improving the sealing effect and reducing the influence of the change of water flow pressure on the upper structure of the device;A first movable plug 30 is slidably connected in a first limiting sliding cavity 23, and a second movable plug 31 is slidably connected in a second limiting sliding cavity 24. The first movable plug 30 and the second movable plug 31 have the same structure. Both the first movable plug 30 and the second movable plug 31 are composed of a plug body main body 32 and a sealing ring 33. The plug body main body 32 is located inside the sealing ring 33. A middle connecting column 34 is fixedly connected between the first movable plug 30 and the second movable plug 31. An upper connecting column 37 is fixedly connected to the upper end of the second movable plug 31. An upper movable assembly 39 is arranged inside the upper cylindrical box body 8. The upper movable assembly 39 includes a movable column 40. A lower sliding rod 43 is fixedly connected to the middle of the lower end of the movable column 40. The lower sliding rod 43 is limited and slid by a limiting groove 44 on the lower end surface of the upper cylindrical box body 8. The lower end of the lower sliding rod 43 is fixed to the upper connecting column 37. A side opening groove 41 is formed on the side surface of the movable column 40. A rack 42 is arranged in the side opening groove 41. A bearing seat 57 is installed on one side of the lower end inside the upper cylindrical box body 8. A rotating gear 56 is rotatably connected to the bearing seat 57. The rotating gear 56 is engaged with the rack 42. The combination of the rotating gear 56 and the rack 42 can also be replaced by a combination of a worm and a worm gear. An angular velocity sensor 58 is installed along the tooth top side of the rotating gear 56 inside the upper cylindrical box body 8. An upper fixing rod 45 is fixedly connected to the middle of the upper end of the movable column 40. The upper end of the upper fixing rod 45 is fixedly connected to an upper fixing plate 46. A first connecting pole piece 50 is installed on the upper end of the upper fixing plate 46. A first connecting diaphragm 51 is arranged on the outer end surface of the first connecting pole piece 50. A second connecting pole piece 52 is installed along the upper end of the first connecting pole piece 50 inside the upper cylindrical box body 8. A side fixing plate 47 is welded and fixed to the middle of the side of the movable column 40 far away from the side opening groove 41. A lower fixing rod 48 is fixedly connected to the outer side of the lower end of the side fixing plate 47. The lower end of the lower fixing rod 48 is fixedly connected to a lower fixing plate 49. A third connecting pole piece 53 is installed on the lower end of the lower fixing plate 49. A second connecting diaphragm 54 is arranged on the outer end surface of the third connecting pole piece 53. A fourth connecting pole piece 55 is installed along the lower end of the third connecting pole piece 53 inside the upper cylindrical box body 8. The first connecting diaphragm 51 and the second connecting diaphragm 54 are made of polymer materials such as polyethylene, and their structures have many fine micropores through which metal ions can freely pass, so that a channel can be formed between the positive and negative pole pieces for discharging. In this way, the problem of insulating separation between the positive and negative pole pieces is solved, and the problem of mutual reaction to generate discharge can also be solved.;

[0035] Please refer to Figure 1 and Figure 2, on the front and rear ends of one side inside the middle circular disc 1, a water inlet baffle 9 is welded and fixed. The water inlet baffle 9 is composed of a first arc convex part 13, a second arc convex part 14 and an arc concave part 15. The first arc convex part 13, the second arc convex part 14 and the arc concave part 15 are connected in sequence. On the other side inside the middle circular disc 1, an arc baffle 10 is welded and fixed. The arc baffle 10 is composed of an arc plate part 11 and a column part 12. The arc plate part 11 is a semi-tube structure. The column part 12 is integrally connected to the front and rear ends of the arc plate part 11. The center of the cross-section of the arc concave part 15 and the center of the cross-section of the column part 12 are collinear. A middle water inlet channel 17 is formed between the two water inlet baffles 9. A water flow monitoring cavity 18 is formed inside the arc baffle 10. A discharge channel 19 is formed between the arc concave part 15 and the column part 12. A flow channel 20 is formed along the outer sides of the water inlet baffle 9 and the arc baffle 10 inside the middle circular disc 1. Through the setting of the structures and positions of the water inlet baffle 9 and the arc baffle 10, the water flow does not flow in the same direction; if the water flow flows out directly in the same direction, the first movable plug 30 is not sensitive to the change of water flow pressure. Through the improvement of the structure, the water flow will flow into the water flow monitoring cavity 18, and has a tendency to flow upward and outward under the blockage of the arc baffle 10, so as to exert a certain pressure on the first movable plug 30, and the first movable plug 30 is sensitive to the change of water flow pressure, and the cooperation realizes the monitoring process. On both sides of the middle circular disc 1, fixed pipes 2 are welded and fixed. The fixed pipes 2 are communicated with the inside of the middle circular disc 1. An inlet cavity 16 is formed inside the fixed pipe 2 near one end of the water inlet baffle 9. An outlet cavity 21 is formed inside the fixed pipe 2 far from one end of the water inlet baffle 9. A side connection flange 3 is welded and fixed on the outer side of the fixed pipe 2. The flange of the side connection flange 3 and the flange of the water supply pipe are fixed by bolts. A first connection flange 5 is welded and fixed at the upper end of the fixed pipe body 4. A second connection flange 6 is welded and fixed at the lower end of the connecting pipe 7. The first connection flange 5 and the second connection flange 6 are fixed by bolts.

[0036] Please refer to Figure 3 and Figure 4, a first limiting sliding cavity 23 is provided with a first pressure spring 35 along the outside of an intermediate connecting column 34, a second limiting sliding cavity 24 is provided with a second pressure spring 36 along the outside of the intermediate connecting column 34, and a third pressure spring 38 is provided along the outside of an upper connecting column 37 inside the second limiting sliding cavity 24. The elastic coefficients of the first pressure spring 35, the second pressure spring 36, and the third pressure spring 38 are different according to the water flow pressure, mainly to ensure the balance state within the normal water flow pressure range; the water flow reaching the water flow monitoring cavity 18 has a certain pressure on a first movable plug 30 in the first limiting sliding cavity 23, and drives an upward acting force on a second movable plug 31, the intermediate connecting column 34, and the upper connecting column 37. Under the action of the first pressure spring 35, the second pressure spring 36, and the third pressure spring 38, the first movable plug 30 and the second movable plug 31 are kept in a balanced state; in the balanced state, the first pressure spring 35 and the third pressure spring 38 are in a compressed state, and the second pressure spring 36 is in a stretched state. Under the pressure imbalance, the reaction force directions of the first pressure spring 35, the second pressure spring 36, and the third pressure spring 38 are the same.

[0037] Please refer to Figure 3 and Figure 6 , a fixed partition 59 is arranged inside an upper cylindrical box body 8. A circuit board 60 is installed along one side of the fixed partition 59 inside the upper cylindrical box body 8. The circuit board 60 and the upper movable assembly 39 are located in different chambers; a first current sensor 61, a second current sensor 62, a control processor 63, and a wireless data transmission module 64 are installed on the circuit board 60. The output ends of a first connecting pole piece 50 and a second connecting pole piece 52 are electrically connected to the input end of the first current sensor 61. The output ends of a third connecting pole piece 53 and a fourth connecting pole piece 55 are electrically connected to the input end of the second current sensor 62. The output ends of the first current sensor 61 and the second current sensor 62 are electrically connected to the input end of the control processor 63. The output end of an angular velocity sensor 58 is electrically connected to the input end of the control processor 63. The output end of the control processor 63 is electrically connected to the input end of the wireless data transmission module 64. The control processor 63 receives and processes signals, and the wireless data transmission module 64 transmits signals; when the first current sensor 61 senses current, it indicates that there is an abnormality at the rear end. When the second current sensor 62 senses current, it indicates that there is an abnormality at the front end, quickly judging the abnormal position; when the angular velocity measured by the angular velocity sensor 58 is large, it is an external problem such as a pipeline rupture. If the angular velocity measured by the angular velocity sensor 58 transmitted continuously decreases, it indicates that there is sludge or other foreign objects blocking. Normally, it can be not processed. After the pole piece contact alarm, it indicates that there are too many blocking foreign objects affecting the water flow and needs to be processed. The abnormal type can be quickly judged through the measurement data of the angular velocity sensor 58.

[0038] A usage method includes the following steps:

[0039] Step 1: The inlet water flows into the middle circular disk 1 through the water inlet cavity 16 of the fixed pipe 2, part of the water flows into the flow channel 20 under the blockage of the first arc-shaped convex portion 13 on the water inlet block 9, and then flows out from the water outlet cavity 21 of the fixed pipe 2, and another part of the water flows into the water flow monitoring cavity 18 through the middle water inlet channel 17 formed between the two water inlet blocks 9, and then enters the flow channel 20 through the discharge channel 19 formed between the water inlet block 9 and the column portion 12 on the arc-shaped baffle 10, and then flows out from the water outlet cavity 21 of the fixed pipe 2;

[0040] Step 2: The water flow in the water flow monitoring chamber 18 exerts a certain pressure on the first movable plug 30 in the first limit sliding chamber 23, and exerts an upward force on the second movable plug 31, the middle connecting column 34 and the upper connecting column 37. Under the action of the first pressure spring 35, the second pressure spring 36 and the third pressure spring 38, the first movable plug 30 and the second movable plug 31 are kept in a balanced state;

[0041] Step 3: When the water supply pipe at the front end of the fixed pipe 2 in the water inlet direction is gradually blocked by sludge, the water flow pressure in the middle circular disk 1 gradually decreases, and the pressure on the first movable plug 30 gradually decreases. Under the action of the first pressure spring 35, the second pressure spring 36 and the third pressure spring 38, the first movable plug 30, the second movable plug 31, the middle connecting column 34 and the upper connecting column 37 gradually move downward, driving the upper movable component 39 downward. Due to the meshing relationship between the rack 42 on the movable column 40 and the rotating gear 56, the rotating gear 56 rotates slowly, and the angular velocity sensor 58 measures the angular velocity; the third connecting electrode 53 gradually contacts the fourth connecting electrode 55, and the second current sensor 62 receives the current flow signal; the control processor 63 receives and processes the signal, and the wireless data transmission module 64 transmits the signal;

[0042] Step 4: When the water supply pipe at the rear end of the fixed pipe 2 in the water outlet direction is gradually blocked by sludge, the water flow pressure in the middle circular disk 1 gradually increases, and the pressure on the first movable plug 30 gradually increases. Under the action of the first pressure spring 35, the second pressure spring 36 and the third pressure spring 38, the first movable plug 30, the second movable plug 31, the middle connecting column 34 and the upper connecting column 37 gradually move upward, driving the upper movable component 39 upward. Due to the meshing relationship between the rack 42 on the movable column 40 and the rotating gear 56, the rotating gear 56 rotates slowly, and the angular velocity sensor 58 measures the angular velocity; the first connecting electrode 50 gradually contacts the second connecting electrode 52, and the first current sensor 61 receives the current flow signal; the control processor 63 receives and processes the signal, and the wireless data transmission module 64 transmits the signal;

[0043] Step Five: When the water supply pipe at the front end of the fixed pipe 2 in the water inlet direction ruptures, the water flow pressure in the middle circular disk 1 rapidly decreases, and the pressure on the first movable plug 30 rapidly decreases. Under the action of the first pressure spring 35, the second pressure spring 36, and the third pressure spring 38, the first movable plug 30, the second movable plug 31, the middle connecting column 34, and the upper connecting column 37 rapidly move downward, driving the upper movable assembly 39 downward. Due to the meshing relationship between the rack 42 on the movable column 40 and the rotating gear 56, the rotating gear 56 rapidly rotates, and the angular velocity sensor 58 measures the angular velocity; the third connecting pole piece 53 rapidly contacts the fourth connecting pole piece 55, and the second current sensor 62 receives the current flow signal; the control processor 63 receives and processes the signal, and the wireless data transmission module 64 transmits the signal;

[0044] Step Six: When the water supply pipe at the rear end of the fixed pipe 2 in the water outlet direction ruptures, the water flow pressure in the middle circular disk 1 rapidly increases, and the pressure on the first movable plug 30 rapidly increases. Under the action of the first pressure spring 35, the second pressure spring 36, and the third pressure spring 38, the first movable plug 30, the second movable plug 31, the middle connecting column 34, and the upper connecting column 37 rapidly move upward, driving the upper movable assembly 39 upward. Due to the meshing relationship between the rack 42 on the movable column 40 and the rotating gear 56, the rotating gear 56 rapidly rotates, and the angular velocity sensor 58 measures the angular velocity; the first connecting pole piece 50 rapidly contacts the second connecting pole piece 52, and the first current sensor 61 receives the current flow signal; the control processor 63 receives and processes the signal, and the wireless data transmission module 64 transmits the signal;

[0045] Step Seven: The background rapidly determines the type of abnormal water supply pipe pressure based on the induced current signal received from the first current sensor 61 or the second current sensor 62 and the speed measurement data of the angular velocity sensor 58.

[0046] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A pressure monitoring and alarm device for a tunnel water supply pipeline, comprising a middle circular disc (1), characterized in that: A fixed tube body (4) is welded and fixed to the upper end of the middle circular disc (1). A connecting pipe (7) is arranged at the upper end of the fixed tube body (4). An upper cylindrical box body (8) is welded and fixed to the upper end of the connecting pipe (7). A first cylindrical cavity (22) is formed inside the fixed tube body (4). A first limiting sliding cavity (23) and a second limiting sliding cavity (24) are formed inside the connecting pipe (7). The internal structures of the first limiting sliding cavity (23) and the second limiting sliding cavity (24) are the same. A first movable plug (30) is slidably connected inside the first limiting sliding cavity (23). A second movable plug (31) is slidably connected inside the second limiting sliding cavity (24). The first movable plug (30) and the second movable plug (31) have the same structure. An intermediate connecting column (34) is fixedly connected between the first movable plug (30) and the second movable plug (31). An upper connecting column (37) is fixedly connected to the upper end of the second movable plug (31). An upper movable assembly (39) is arranged inside the upper cylindrical box body (8). The upper movable assembly (39) includes a movable column (40). A lower sliding rod (43) is fixedly connected to the middle of the lower end of the movable column (40). The lower sliding rod (43) is limited and slid by a limiting groove (44) with the lower end face of the upper cylindrical box body (8). The lower end of the lower sliding rod (43) is fixed to the upper connecting column (37). A side slot (41) is formed on the side of the movable column (40). A rack (42) is arranged inside the side slot (41). A bearing seat (57) is installed on one side of the lower end inside the upper cylindrical box body (8). A rotating gear (56) is rotatably connected to the bearing seat (57). The rotating gear (56) is engaged with the rack (42). An angular velocity sensor (58) is installed along the tooth top side of the rotating gear (56) inside the upper cylindrical box body (8). An upper fixing rod (45) is fixedly connected to the middle of the upper end of the movable column (40). An upper fixing disc (46) is fixedly connected to the upper end of the upper fixing rod (45). A first connecting pole piece (50) is installed on the upper end of the upper fixing disc (46). A first connecting diaphragm (51) is arranged on the outer end face of the first connecting pole piece (50). A second connecting pole piece (52) is installed along the upper end of the first connecting pole piece (50) inside the upper cylindrical box body (8). A side fixing plate (47) is welded and fixed to the middle of the outer side of the movable column (40) away from the side slot (41). A lower fixing rod (48) is fixedly connected to the outer side of the lower end of the side fixing plate (47). A lower fixing disc (49) is fixedly connected to the lower end of the lower fixing rod (48). A third connecting pole piece (53) is installed on the lower end of the lower fixing disc (49). A second connecting diaphragm (54) is arranged on the outer end face of the third connecting pole piece (53). A fourth connecting pole piece (55) is installed along the lower end of the third connecting pole piece (53) inside the upper cylindrical box body (8).

2. The pressure monitoring and alarm device for a tunnel water supply pipeline according to claim 1, characterized in that: On the front and rear ends of one side inside the middle circular disk (1), a water inlet baffle (9) is welded and fixed. The water inlet baffle (9) is composed of a first arc convex part (13), a second arc convex part (14) and an arc concave part (15). The first arc convex part (13), the second arc convex part (14) and the arc concave part (15) are connected in sequence. On the other side inside the middle circular disk (1), an arc baffle (10) is welded and fixed. The arc baffle (10) is composed of an arc plate part (11) and a column part (12). The arc plate part (11) is a semi-tube structure. The column part (12) is integrally connected to the front and rear ends of the arc plate part (11). The center of the cross-section of the arc concave part (15) and the center of the cross-section of the column part (12) are collinear. A middle water inlet channel (17) is formed between the two water inlet baffles (9). A water flow monitoring cavity (18) is formed inside the arc baffle (10). A discharge channel (19) is formed between the arc concave part (15) and the column part (12). A flow channel (20) is formed along the outer sides of the water inlet baffle (9) and the arc baffle (10) inside the middle circular disk (1).

3. The pressure monitoring and alarm device for tunnel water supply pipelines according to claim 1, wherein: Both the first limit sliding cavity (23) and the second limit sliding cavity (24) are composed of a first frustum-shaped cavity (25), a second frustum-shaped cavity (26), a second cylindrical cavity (27), a third frustum-shaped cavity (28) and a fourth frustum-shaped cavity (29). The first frustum-shaped cavity (25) and the second frustum-shaped cavity (26) are symmetrically arranged with the third frustum-shaped cavity (28) and the fourth frustum-shaped cavity (29). The slope of the inclined surface of the first frustum-shaped cavity (25) and the fourth frustum-shaped cavity (29) is smaller than the slope of the inclined surface of the second cylindrical cavity (27) and the third frustum-shaped cavity (28). Both the first movable plug (30) and the second movable plug (31) are composed of a plug body main body (32) and a sealing ring (33). The plug body main body (32) is located inside the sealing ring (33).

4. The pressure monitoring and alarm device for tunnel water supply pipelines according to claim 2, characterized in that: A first compression spring (35) is arranged along the outside of the middle connecting column (34) inside the first limit sliding cavity (23). A second compression spring (36) is arranged along the outside of the middle connecting column (34) inside the second limit sliding cavity (24). A third compression spring (38) is arranged along the outside of the upper connecting column (37) inside the second limit sliding cavity (24).

5. The pressure monitoring and alarm device for tunnel water supply pipelines according to claim 4, characterized in that: A fixed partition plate (59) is arranged inside the upper cylindrical box body (8). A circuit board (60) is installed along one side of the fixed partition plate (59) inside the upper cylindrical box body (8). The circuit board (60) and the upper movable component (39) are located in different chambers.

6. The pressure monitoring and alarm device for a tunnel water supply pipeline according to claim 5, characterized in that: The circuit board (60) is mounted with a first current sensor (61), a second current sensor (62), a control processor (63) and a wireless data transmission module (64); the output ends of the first connecting electrode (50) and the second connecting electrode (52) are electrically connected to the input end of the first current sensor (61); the output ends of the third connecting electrode (53) and the fourth connecting electrode (55) are electrically connected to the input end of the second current sensor (62); the output ends of the first current sensor (61) and the second current sensor (62) are electrically connected to the input end of the control processor (63); the output end of the angular velocity sensor (58) is electrically connected to the input end of the control processor (63); and the output end of the control processor (63) is electrically connected to the input end of the wireless data transmission module (64).

7. The pressure monitoring and alarm device for tunnel water supply pipelines according to claim 6, characterized in that: Fixed pipes (2) are welded and fixed on both sides of the middle circular disk (1); the fixed pipes (2) are connected to the interior of the middle circular disk (1); a water inlet chamber (16) is formed inside the fixed pipe (2) at one end close to the water inlet block (9); and a water outlet chamber (21) is formed inside the fixed pipe (2) at one end away from the water inlet block (9).

8. The pressure monitoring and alarming device for tunnel water supply pipelines according to claim 7, characterized in that: A side connecting flange (3) is welded and fixed to the outer side of the fixed pipe (2), a first connecting flange (5) is welded and fixed to the upper end of the fixed pipe body (4), and a second connecting flange (6) is welded and fixed to the lower end of the connecting pipe (7), and the first connecting flange (5) and the second connecting flange (6) are fixed by bolts.

9. A method of use, implemented based on the tunnel water supply pipeline pressure monitoring and alarm device described in claim 7, characterized in that, The steps include: Step 1: the inlet water flows into the middle circular disk (1) through the water inlet cavity (16) of the fixed pipe (2), part of the water flows into the flow channel (20) under the blocking of the first arc-shaped convex part (13) on the water inlet block (9), and then flows out from the water outlet cavity (21) of the fixed pipe (2), and the other part of the water flows into the water flow monitoring cavity (18) through the middle water inlet channel (17) formed between the two water inlet blocks (9), and then enters the flow channel (20) through the discharge channel (19) formed between the water inlet block (9) and the upper column part (12) of the arc-shaped baffle (10), and then flows out from the water outlet cavity (21) of the fixed pipe (2); Step 2: The water flow reaching the water flow monitoring chamber (18) exerts a certain pressure on the first movable plug (30) in the first limit sliding chamber (23), and exerts an upward force on the second movable plug (31), the middle connecting column (34) and the upper connecting column (37). Under the action of the first pressure spring (35), the second pressure spring (36) and the third pressure spring (38), the first movable plug (30) and the second movable plug (31) are kept in a balanced state; Step 3: When the water supply pipe at the front end of the fixed pipe (2) in the water inlet direction is gradually blocked by sludge, the water flow pressure in the middle circular disk (1) gradually decreases, and the pressure on the first movable plug (30) gradually decreases. Under the action of the first pressure spring (35), the second pressure spring (36) and the third pressure spring (38), the first movable plug (30), the second movable plug (31), the middle connecting column (34) and the upper connecting column (37) gradually move downward, driving the upper movable assembly (39) downward. Due to the meshing relationship between the rack (42) on the movable column (40) and the rotating gear (56), the rotating gear (56) slowly rotates, and the angular velocity sensor (58) measures the angular velocity; the third connecting pole piece (53) gradually contacts the fourth connecting pole piece (55), and the second current sensor (62) receives the current circulation signal; the control processor (63) receives the signal and processes it, and the wireless data transmission module (64) transmits the signal; Step 4: When the water supply pipe at the rear end of the fixed pipe (2) in the water outlet direction is gradually blocked by sludge, the water flow pressure in the middle circular disk (1) gradually increases, and the pressure on the first movable plug (30) gradually increases. Under the action of the first pressure spring (35), the second pressure spring (36) and the third pressure spring (38), the first movable plug (30), the second movable plug (31), the middle connecting column (34) and the upper connecting column (37) gradually move upward, driving the upper movable assembly (39) upward. Due to the meshing relationship between the rack (42) on the movable column (40) and the rotating gear (56), the rotating gear (56) slowly rotates, and the angular velocity sensor (58) measures the angular velocity; the first connecting pole piece (50) gradually contacts the second connecting pole piece (52), and the first current sensor (61) receives the current circulation signal; the control processor (63) receives the signal and processes it, and the wireless data transmission module (64) transmits the signal; Step 5: When the water supply pipe at the front end of the fixed pipe (2) in the water inlet direction bursts, the water flow pressure in the middle circular disk (1) rapidly decreases, and the pressure on the first movable plug (30) rapidly decreases. Under the action of the first pressure spring (35), the second pressure spring (36) and the third pressure spring (38), the first movable plug (30), the second movable plug (31), the middle connecting column (34) and the upper connecting column (37) rapidly move downward, driving the upper movable assembly (39) downward. Due to the meshing relationship between the rack (42) on the movable column (40) and the rotating gear (56), the rotating gear (56) rapidly rotates, and the angular velocity sensor (58) measures the angular velocity; the third connecting pole piece (53) rapidly contacts the fourth connecting pole piece (55), and the second current sensor (62) receives the current circulation signal; the control processor (63) receives the signal and processes it, and the wireless data transmission module (64) transmits the signal; Step 6: When the water supply pipe at the rear end of the fixed pipe (2) in the water outlet direction ruptures, the water flow pressure in the middle circular disc (1) rapidly increases, and the pressure on the first movable plug (30) rapidly increases. Under the action of the first pressure spring (35), the second pressure spring (36) and the third pressure spring (38), the first movable plug (30), the second movable plug (31), the middle connecting column (34) and the upper connecting column (37) rapidly move upward, driving the upper movable component (39) upward. Due to the meshing relationship between the rack (42) on the movable column (40) and the rotating gear (56), the rotating gear (56) rotates rapidly, and the angular velocity sensor (58) measures the angular velocity; the first connecting pole piece (50) rapidly contacts the second connecting pole piece (52), and the first current sensor (61) receives the current circulation signal; the control processor (63) receives and processes the signal, and the wireless data transmission module (64) transmits the signal; Step 7: The background rapidly determines the type of abnormal water supply pipe pressure based on the induced current signal of the first current sensor (61) or the second current sensor (62) received and the speed measurement data of the angular velocity sensor (58).

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